Journal articles: 'Component Oriented Software Engineering, Component Based Development, Component Oriented Modeling' – Grafiati (2024)

Abstract:

In order to develop the process-oriented software, we put forward hierarchical colored Petri net (HCPN) to model business process. This approach consists of hierarchical decomposition graph, detailed process graph. Furthermore, the concept of business process components (BPCs) is proposed to facility the business process modeling. The software components, which are constructs of the information system, can be derived by means of the mapping from the relevant business process components. The development of business process-oriented application will be more convenient and rapid based on component library. Such an application becomes more flexible to the changing environment.

Abstract:

Modelinė architektūra gana paplitusi, tačiau jos taikymai komponentinei paradigmai yra tik daliniai – neatsižvelgiama į reikalavimą atskirti komponentų ir komponentinių sistemų kūrimo procesus. Šio straipsnio tikslas – aprašyti modelinės architektūros naudojimo automatizuotai kuriant komponentines programų sistemas iš binarinių komponentų metodą, atsižvelgiant į Išrink–Pritaikyk–Testuok gyvavimo ciklo reikalavimus. Straipsnyje atskleista komponentinių programų abstrakčiųjų ir konkrečiųjųmodelių specifi ka, aprašytos jų transformacijos. Nustatyta, kad modelinė architektūra su pakeitimais gali būti naudojama ir komponentinių programų sistemų kūrimo iš binarinių komponentų procesui automatizuoti, pateiktos jos tobulinimo gairės.The Application of MDA for Component-based Software DevelopmentVaidas Giedrimas SummaryThe Model-Driven Architecture is relatively widely used but the conjunctions of MDA and Component-Oriented Paradigm are still partial only. According Component-Oriented Paradigm there is clear division of component-based software engineering to the component development and componentbased development, but unfortunately in existing approaches this principle is avoided. The aim of this article is to describe the method of MDA in automated component-based software synthesis from binary components process, having in mind the singularities of Select-Adapt-Test lifecycle. The key points of modifi ed component-based MDA are covered including platform-independent models, platform-specifi c models and transformations.>

Abstract:

AbstractComponent-based development (CBD) has become an important emerging topic in the software engineering field. It promises long-sought-after benefits such as increased software reuse, reduced development time to market and, hence, reduced software production cost. Despite the huge potential, the lack of reasoning support and development environment of component modeling and verification may hinder its development. Methods and tools that can support component model analysis are highly appreciated by industry. Such a tool support should be fully automated as well as efficient. At the same time, the reasoning tool should scale up well as it may need to handle hundreds or even thousands of components that a modern software system may have. Furthermore, a distributed environment that can effectively manage and compose components is also desirable. In this paper, we present an approach to the modeling and verification of a newly proposed component model using Semantic Web languages and their reasoning tools. We use the Web Ontology Language and the Semantic Web Rule Language to precisely capture the inter-relationships and constraints among the entities in a component model. Semantic Web reasoning tools are deployed to perform automated analysis support of the component models. Moreover, we also proposed a service-oriented architecture (SOA)-based semantic web environment for CBD. The adoption of Semantic Web services and SOA make our component environment more reusable, scalable, dynamic and adaptive.

Abstract:

In the last three decades, the concept and implementation of component-based architectures have been promoted in software systems creation. Increasingly complex demands are placed on the software component systems, in particular relating to the dynamic properties. The emergence of such requirements has been gradually enforced by the practice of development and implementation of these systems, especially for information systems software.Just the information systems (robust IS) of different types require that target software meets their requirements. Among other things, we mean primarily the adaptive processes of different domains, high distributives due to the possibilities of the Internet 2.0, acceptance of high integrity of life domains (process, data and communications integrity), scalability, and flexible adaptation to process changes, a good context for external devices and transparent structure of the sub-process modules and architectural units.Of course, the target software of required qualities and the type robust cannot be a monolith. As commonly known, development of design toward information systems software has clearly come to the need for the software composition of completely autonomous, but cooperating architectural units that communicate with each other using messages of prescribed formats.Although for such units there were often used the so called subsystems and modules, see (Jac, Boo, Rumbo, 1998) and (Arlo, Neus, 2007), their abstraction being gradually enacted as the term component. In other words, the subsystems and modules are specific types of components.In (Král, Žeml, 2000) and (Král, Žeml, 2003) there are considered two types of target software of information systems. The first type – there are SWC (Software Components), composed of permanently available components, which are thought as services – Confederate software. The second type – SWA (Software Alliance), called semi Confederate, formed during the run-time of the software system and referred to as software alliance.In both of these mentioned publications there is delivered ​​deep philosophy of relevant issues relating to SWC / SWA as creating copies of components (cloning), the establishment and destruction of components at software run-time (dynamic reconfiguration), cooperation of autonomous components, programmable management of components interface in depending on internal components functionality and customer requirements (functionality, security, versioning).Nevertheless, even today we can meet numerous cases of SWC / SWA existence, with a highly developed architecture that is accepting vast majority of these requests. On the other hand, in the development practice of component-based systems with a dynamic architecture (i.e. architecture with dynamic reconfiguration), and finally with a mobile architecture (i.e. architecture with dynamic component mobility) confirms the inadequacy of the design methods contained in UML 2.0. It proves especially the dissertation thesis (Rych, Weis, 2008). Software Engineering currently has two different approaches to systems SWC / SWA. The first approach is known as component-oriented software development CBD (Component based Development). According to (Szyper, 2002) that is a collection of CBD methodologies that are heavily focused on the setting up and software components re-usability within the architecture. Although CBD does not show high theoretical approach, nevertheless, it is classified under the general evolution of SDP (Software Development Process), see (Sommer, 2010) as one of its two dominant directions.From a structural point of view, a software system consists of self-contained, interoperable architectural units – components based on well-defined interfaces. Classical procedural object-oriented methodologies significantly do not use the component meta-models, based on which the target component systems are formed, then. Component meta-models describe the syntax, semantics of components. They are a system of rules for components, connectors and configuration. Component meta-models for dynamic and mobile architectures also describe the concept of rules for configuration changes (rules for reconfiguration). As well-known meta-models are now considered: Wright for static architecture, SOFA and Darvin for dynamic architecture and SOFA 2.0 for mobile architecture, see (Rych, Weis, 2008).The CBD approach verbally defines the basic terms as component (primitive / composite), interface, component system, configuration, reconfiguration, logical (structural) view, process view (behavioral), static component architecture, dynamic architecture, mobile architecture (fully dynamic architecture), see (IEEE Report, 2000) and (Crnk, Chaud, 2006).The CBD approach also presents several ​​ADL languages (Architecture Description Languages) which are able to describe software architecture. The known languages ​​are integration ACME and UML (Unified Modeling Language), see (Garl, Mon, Wil, 2000) and (UNIFEM, 2005).The second approach to SWC / SWA systems is formed on SOA, but this article does not deal with it consistently.SOA is a philosophy of architecture. SOA is not a methodology for the comprehensive development of the target software. Nevertheless, SOA successfully filled the role of software design philosophy and on the other hand, also gave an important concept linking software components and their architectural units – business services. SOA understands any software as a Component System of a business service and solved life components in it. The physical implementation of components is given by a Web services platform. A certain lack of SOA is its weak link to the business processes that are a universally recognized platform for business activities and the source for the creation of enterprise services.This paper deals with a specific activity in the CBD, i.e. the integration of the concept of component-based system into an advanced procedural, object-oriented methodology (Arlo, Neust, 2007), (Kan, Müller, 2005), (​​Krutch, 2003) for problem domains with double-layer process logic. There is indicated an integration method, based on a certain meta-model (Applying of the Component system Development in object Methodology) and leading to the component system formation. The mentioned meta-model is divided into partial workflows that are located in different stages of a classic object process-based methodology. Into account there are taken the consistency of the input and output artifacts in working practices of the meta-model and mentioned object methodology. This paper focuses on static component systems that are starting to explore dynamic and mobile component systems.In addition, in the contribution the component system is understood as a specific system, for its system properties and basic terms notation being used a set and graph and system algebra.

Abstract:

For gas turbine engine performance analysis, a variety of simulation tools is available. In order to minimize model development and software maintenance costs, generic gas turbine system simulation tools are required for new modeling tasks. Many modeling aspects remain engine specific however and still require large implementation efforts. One of those aspects is adaptive modeling. Therefore, an adaptive modeling functionality has been developed that can be implemented in a generic component-based gas turbine environment. A single component in a system modeling environment is able to turn any new or existing model into an adaptive model without extra coding. The concept has been demonstrated in the GSP gas turbine modeling environment. An object-oriented architecture allows automatic addition of the necessary equations for the adaptation to measurement values. Using the adaptive modeling component, the user can preconfigure the adaptive model and quickly optimize gas path diagnostics capability using experimentation with field data. The resulting adaptive model can be used by maintenance engineers for diagnostics. In this paper the integration of the adaptive modeling function into a system modeling environment is described. Results of a case study on a large turbofan engine application are presented.

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This paper incorporates the concepts of aspects and software reuse in archetype driven architecture. The proposed work develops the software by partitioning the whole system into different independent components and aspects to facilitate component reuse. The authors illustrate the ease of modeling the components separately and emphasize concerns that the OOP paradigm has failed to address. This paper places emphasis on designing and modeling the software rather than coding. Identification of reusable components is carried out using the hybrid methodology and aspects are identified by domain experts. Along with the components, the PIM and aspects developed are stored in separate repositories to be used in development of other software of similar requirements and basic structure.

Abstract:

Software size estimation at the early analysis phase of software development lifecycle is crucial for predicting the associated effort and cost. Analysis phase captures the functionality addressed in the software to be developed in object-oriented software development life-cycle. Unified modeling language captures the functionality of the software at the analysis phase based on use case model. This paper proposes a new method named as use case model function point to estimate the size of the object-oriented software at the analysis phase itself. While this approach is based on use case model, it also adapts the function point analysis technique to use case model. The various features such as actors, use cases, relationship, external reference, flows, and messages are extracted from use case model. Eleven rules have been derived as guidelines to identify the use case model components. The function point analysis components are appropriately mapped to use case model components and the complexity based on the weightage is specified to calculate use case model function point. This proposed size estimation approach has been evaluated with the object-oriented software developed in our software engineering laboratory to assess its ability to predict the developmental size. The results are empirically analysed based on statistical correlation for substantiating the proposed estimation method.

Abstract:

Software development environment has been changing into new development paradigms such as concurrent distributed development environment and the so-called open source project by using network computing technologies. Especially, an OSS (open source software) system which serves as key components of critical infrastructures in the society is still ever-expanding now. In case of considering the effect of the debugging process on an entire system in the development of a method of reliability assessment for the OSS, it is necessary to grasp the deeply-intertwined factors, such as programming path, size of each component, skill of fault reporter, and so on. In order to consider the effect of each software component on the reliability of an entire system, we propose a new approach to user-oriented software reliability assessment by creating a fusion of neural network and software reliability growth modeling. In this paper, we show application examples of component-oriented software reliability assessment based on neural network and software reliability growth modeling for the OSS. Also, we analyze actual software fault count data to show numerical examples of software reliability assessment for the OSS. Moreover, we develop the testing management tool for OSS.

Abstract:

Since the component technologies and Component-Based Development (CBD) or Component-Based Software Engineering (CBSE) started at 90 of 20th century [1], today almost 70 percent of software development with components. But from the industry practice and component based application developers’ point of view, the big problem still exists which is how to compose software components together effectively and efficiently. Here, by research on the component and taskflow and XML technologies, to illustrate a taskflow based design of component composition technology with XML based tasks for components integration and to improve the efficiency of CBSE.

Abstract:

Alone with the Component-Based Software Engineering (CBSE) has been becoming the mainstream in applications development, there are a lot of people has been used software components to build their applications and business systems. But in practice, how to create a reusable and easy customized component and can be easily integrated into users’ application is still a headache problem to many designers and developers. Here by study and analyzing the interface-oriented software component model and research on the XML and task-oriented technologies, it illustrates a task-oriented software component design and try to improve the CBSE in practice

Abstract:

Applying software reuse to many Embedded Real-Time (ERT) systems poses significant challenges to industrial software processes due to the resource-constrained and real-time requirements of the systems. Autonomous Mobile Robot (AMR) system is a class of ERT systems, hence, inherits the challenge of applying software reuse in general ERT systems. Furthermore, software reuse in AMR systems is challenged by the diversities in terms of robot physical size and shape, environmental interaction and implementation platform. Thus, it is envisioned that component-based software engineering will be the suitable way to promote software reuse in AMR systems with consideration to general requirements to be self-contained, platform-independent and real-time predictable. A framework for component-oriented programming for AMR software development using PECOS component model is proposed in this paper. The main features of this framework are: (1) use graphical representation for components definition and composition; (2) target C language for optimal code generation with resource-constrained micro-controller; and (3) minimal requirement for run-time support. Real-time implementation indicates that, the PECOS component model together with the proposed framework is suitable for resource constrained embedded AMR systems software development.

Abstract:

The adoption of the agile methods' principles has emerged as an effective way to develop service oriented architectures as it paves the way for a better reply to the changing needs of the environment and even the customer. However, these changes may also require the evolution of the development process itself. This paper presents an agile and service-oriented software development method that combines concepts from the Service-Oriented Computing (SOC) domain and the agile software engineering one. This method provides an iterative and incremental process to deliverer business processes, implemented as an assembly of components. This leads to a faster response to the change of needs by reconfiguring the assembly of components. The method is based on a framework that implements its phases as an assembly of components to allow a dynamic reconfiguration of it in case of a development process evolution. Finally, a case study is presented to illustrate the use of the presented method.

Abstract:

Embedded software is used to control the functions of mechanical and physical devices by dedicated digital signal processor and computers. Nowadays, heterogeneous and collaborative embedded software systems are widely adopted to engage the physical world. To make such software extremely reliable, very efficient and highly flexible, component-based embedded software development can be employed for the complex embedded systems, especially those based on object-oriented (OO) approaches. In this paper, we introduce a component-based embedded software framework and the features it inherits. We propose a quality assurance (QA) model for component-based embedded software development, which covers both the component QA and the system QA as well as their interactions. Furthermore, we propose a generic quality assessment environment for component-based embedded systems: ComPARE. ComPARE can be used to assess real-life off-the-shelf components and to evaluate and validate the models selected for their evaluation. The overall component-based embedded systems can then be composed and analyzed seamlessly.

Abstract:

Service-oriented architecture (SOA)-based system development requires a systematic integration technique for software modeling and business modeling methods that approach the implementation component from the perspective of a business service. We proposes the integrated design method (architecture, metamodel, framework, process) for the integration of component software modeling in business process modeling notation (BPMN) business modeling to service-oriented modeling based on model-driven architecture (MDA) and model view controller (MVC) patterns according to SOA. The integrated architecture is composed of a metamodel and a process framework. The integrated metamodel is mapped to the core modeling elements of the SOA-based extended layered (XL)-BPMN/business process execution language (BPEL)/web service description language (WSDL)/component models, and the conversion profile is defined. For the establishment of the integrated process between business and software modeling, the framework is first defined; using this framework, we apply MDA (CIM: Conceptual Independent Modeling, PIM: Platform Independent Modeling, PSM: Platform Specific Modeling) and MVC patterns to define the integrated modeling process for the three development phases. The proposed modeling process was applied to the design of an online shopping mall system (OSMS). The design models were described on the basis of MDA/MVC according to the layered modeling elements defined in the individual/integrated metamodel and the three modeling phases of the integrated modeling process. The case study demonstrated that the conversion modeling task maintains the consistency and practicality between the SOA-based business and software modeling. The use of this method will make the consistent conversion modeling work between businesses and software convenient with a service orientation, will make it easy to change a business process, and will maximize the number of established reuse models.

Abstract:

When developing any information system, an extremely important stage of its life cycle is the design or modeling stage. Among the existing approaches to the design of information systems, such as, for example, the “classic” development of UML diagrams using a unified modeling language, the model-oriented systems engineering approach, focused on building models, is gaining popularity. Purpose of the study. Consider modeling a system for monitoring and analyzing electronic media information using the methods of model-oriented system engineering. Research methods and tools. It is proposed to use the toolkit of the system-oriented design methodology, focused on the creation and use of models of different degrees of detail at different stages of design. The application of models of hierarchical decomposition of entities is presented on the example of typical essential characteristics of artificial systems: requirements for the system, system functions, system components (subsystems), work on creating a system. A regular method for constructing and consistently expanding architectural models of products is described, on the basis of which models of hierarchical taxonomy of functional requirements for the system, key functions, and components of the system core are built. Based on hierarchical taxonomy models, a model for matching requirements and functions and a model for matching functions and system components are built. Results. The developed models clearly show the relationship of system components, requirements, functions and modules with each other. The approach used makes it possible to detail the presentation of the system based on its decomposition into subsystems and on the basis of taking into account the essential characteristics. All this makes it possible to streamline the sequence of stages of creating a system and decompose them into separate stages of work. Conclusion. The results obtained in the course of the conducted research make it possible to proceed to the next stage of the life cycle of the information system being developed – its software development.

Abstract:

Current approaches to component-based systems engineering tend to focus on low-level software component interface design and implementation. This often leads to the development of components whose services are hard to understand and combine, make too many assumptions about other components they can be composed with and component documentation that is too low-level. Aspect-oriented component engineering is a new methodology that uses a concept of different system capabilities ("aspects") to categorise and reason about inter-component provided and required services. It supports the identification, description and reasoning about high-level component functional and non-functional requirements grouped by different systemic aspects, and the refinement of these requirements into design-level software component service implementation aspects. Aspect information is used to help implement better component interfaces and to encode knowledge of a component's capabilities for other components, developers and end users to access. We describe and illustrate the use of aspect-oriented component engineering techniques and notations to specify, design and implement software components, report on some basic tool support, and our experiences using the approach to build some complex, component-based software systems.

Abstract:

To deal with the complex design issues of Dynamically Reconfigurable Systems-on-Chip (DRSoCs), it is extremely relevant to raise the abstraction level in which models are expressed. A high abstraction level allows great flexibility and reusability while bypassing low-level implementation details. In this context, model-driven engineering (MDE) provides support to build and transform precise and structured models for a particular purpose at different levels of abstraction. Indeed, high-level models are successively refined to low-level models until reaching the executable ones. Thus, this paper presents an MDE-based framework for DRSoCs design enabling the transformation of UML/MARTE specifications to SystemC/TLM implementation. To achieve a high degree of expressiveness for modeling dynamic reconfiguration, we use a suitable software engineering approach based on service-oriented component architecture. Since MARTE does not cover the common features of dynamic reconfiguration domain and service orientation concepts, new stereotypes are created by refinement to add missing capabilities to the profile. Likewise, SystemC does not provide native support for dynamic reconfiguration, thus leading us to adopt a design pattern based solution for DRSoCs implementation in compliance with standards. The proposed framework is validated through a reconfigurable active 3-way crossover case study in which we demonstrate the practicability of the approach by gradual model transformations with reduced implementation effort and significant design productivity gain.

Abstract:

Domain-specific models increase the level of abstraction used to develop large-scale component-based systems. Model-driven development (MDD) approaches (e.g., Model-Integrated Computing and Model-Driven Architecture) emphasize the use of models at all stages of system development. Decomposing problems using MDD approaches may result in a separation of the artifacts in a way that impedes comprehension. For example, a single concern (such as deployment of a distributed system) may crosscut different orthogonal activities (such as component specification, interaction, packaging and planning). To keep track of all entities associated with a component, and to ensure that the constraints for the system as a whole are not violated, a purely model-driven approach imposes extra effort, thereby negating some of the benefits of MDD. This paper provides three contributions to the study of applying aspect-oriented techniques to address the crosscutting challenges of model-driven component-based distributed systems development. First, we identify the sources of crosscutting concerns that typically arise in model-driven development of component-based systems. Second, we describe how aspect-oriented model weaving helps modularize these crosscutting concerns using model transformations. Third, we describe how we have applied model weaving using a tool called the Constraint-Specification Aspect Weaver (C-SAW) in the context of the Platform-Independent Component Modeling Language (PICML), which is a domain-specific modeling language for developing component-based systems. A case study of a joint-emergency response system is presented to express the challenges in modeling a typical distributed system. Our experience shows that model weaving is an effective and scalable technique for dealing with crosscutting aspects of component-based systems development.

Abstract:

Graphical User Interface (GUI) is considered to be an essential part in any web applications development. Aspect-Oriented Component Engineering (AOCE) is new approach for developing more and higher quality reusable and adaptable software or web applications components. AOCE uses the idea of providing and requiring services. Adaptable user interface for AOCE based development has not yet been considered to web applications. Simple and easy user interface facilitate users by which application or web interface can be operated effectively. The purpose of this study is to discuss popular user interfaces and suggestions for adaptable GUI designing. The example of adaptation at different levels includes architecture, presentation, extension and composition. Furthermore the AOCE common systemic aspects are discussed for web interfaces adaptivity.

Abstract:

The use offrameworksandcomponentshas been shown to be effective in improving software productivity and quality. However, the results in terms of reuse and standardization show a dearth of portability either of designs or of component-based implementations. This paper, which is based on themodel driven software developmentparadigm, presents an approach that separates the description of component-based applications from their possible implementations for different platforms. This separation is supported by automatic integration of the code obtained from the input models into frameworks implemented using object-oriented technology. Thus, the approach combines the benefits of modeling applications from a higher level of abstraction than objects, with the higher levels of code reuse provided by frameworks. In order to illustrate the benefits of the proposed approach, two representative case studies that use both an existing framework and an ad hoc framework, are described. Finally, our approach is compared with other alternatives in terms of the cost of software development.

Abstract:

The growing complexity of today's embedded systems demands new methodologies and tools to manage the problems of analysis, design, implementation, and validation of complex-embedded systems. Focusing on this issue, this paper describes a design and implementation toolset using our ODYSSEY methodology, which advocates object-oriented (OO) modeling of embedded systems and its ASIP-based implementation. The proposed approach promotes a smooth transition from high-level object-oriented specification to the final embedded system, which is composed of hardware and software components. The transition from higher to lower abstraction levels is facilitated by the use of our GUI, which supports the intermediate steps of the design and implementation process. In order to illustrate the proposed approach and related toolset, we apply this top-down design and implementation framework to real-world embedded systems, namely JPEG codec and Motion JPEG codec. Experimental results show that the developed tool remarkably decreases the design and verification time with modest performance penalty.

Abstract:

According to the traditional IT system to integrated the parts and brings much repetition and high cost is insufficient, service oriented architecture is put forward solutions. Further introduces the service oriented architecture theory knowledge, transverse relative to the traditional development advantages, fully demonstrates the main trend of the service oriented architecture that drive. Discusses in detail the service oriented architecture (SOA), the core concept and design principles, and security measures to IBM led the company put forward using the service oriented architecture modeling, and to service the abstract concept to carry on the analysis. The core of service oriented is the component architecture and service data object, combining components and data on the part of the object oriented service principle. And Web services and SOA are compared to further understanding the connotation of SOA, and can support is given based on SOA application system of the specific technology, finally, the paper discusses the SOA further research direction.

Abstract:

In a software system, software processes can be concurrently run by system actors (e.g. agents, components), by making use of shared or dedicated software resources. Coordination is a research area oriented to understand, explicitly model and analyze how activities can depend on each other, in a concurrent system. Many coordination models and languages have been presented in the last few years in order to make coordination a first class entity in the development of a software system. However, what usually happens, is that coordination is described late in the software development and it is not integrated in a typical software process. What we claim, with our research, is that if coordination becomes explicit and formalized as soon as possible in the software life cycle, then it is possible to create coordination-aware software systems, which are easily maintained and developed. What we present, in the following, is a software engineering view of coordination. Diagrams produced during a UML-based software modeling, are analyzed in order to help a software engineer in the difficult task to elicit coordination requirements from informal ones. We show how UML models can drive an elicitation process in order to identify coordination requirements, and can graphically describe which elements need coordination.

Abstract:

This paper presents our research on the Interaction Techniques Markup Language (InTml). Our final goal in this work is to find ways to evolve and fit virtual reality (VR) applications over heterogeneous hardware platforms, a process we call retargeting. Toward this goal, we have developed a hardware-independent, component-based, formal model that describes the execution of VR applications; an XML language for describing complex and implementation-independent VR applications; a methodology for InTml-based development; a manual way to isolate and replace interaction techniques as a contribution to VR retargeting; and a set of tools for development support. This paper describes these topics and states future directions of our research.

Abstract:

The methodology of a virtual laboratory workshop organizing on the example of research of technological stages lamination of a printing order in the production process of post-press processing of printed products in the training of qualified specialists in engineering specialties is presented. Despite the extensive coverage in open sources a features application of commercial complexes of simulation modeling in the educational process, the performed analysis showed the need to design an original client-server virtual platform for learning experiment and further development of industry-oriented structural components as pedagogical toolkit for it. Therefore, a software engine is proposed with the support of relevant program libraries and up-to-date information from the corporate database of the enterprise for operational computation and dynamic management of the active education environment based on requests and subsequent decision-making, when the student independently builds a strategy to achieve the goal by means of the most adequate simulation models. The applied architecture of the software engine presupposes the presence of interdisciplinary skills allows the academic media platform of the learning experiment to work in three educationally oriented modes and provides work experience close to the production one.

Abstract:

The MATLAB application package accelerates the pace of learning, teaching, and research in engineering disciplines and science, helping to prepare students for a successful career in the industry because it is widely used for research and development. It has received a wide application in such industries as aerospace, automotive, communication, and industrial automation. The concept of model-oriented design is based on the modeling of high-level systems. This allows us to develop a model based on technical tasks and specifications, to design systems using simulation modeling, to automatically generate code, and also test and verify models at stages from project to implementation. Thus, teachers get the opportunity to educate students about the understanding of the system components physics, their interaction and the behavior of systems in general, and all this in a unified environment. In the paper, the main advantages, interfaces of MATLAB application programs are presented. The results of scientific research of authors using MATLAB - investigation of natural frequencies and damping parameters of gauge tubular springs in the viscous medium as well as torsional oscillations of the pump unit shafts are presented. The effect of the geometric characteristics of gauge tubular springs on the natural frequencies of oscillations and attenuation parameters is investigated. Using the MATLAB package, a technique has been developed for calculating the stresses associated with the torsion of the pumping unit shafts.

Abstract:

The methodology of designing self-contained breathing apparatus with chemically bound oxygen is considered.The distribution of mass and dimensions of the apparatus along the human body increases the comfort of its use, expands the range of types of operations that a person can perform. The problem of optimal design of apparatuses is formulated. The solution of the problem is provided by the use of automated stands of virtual / augmented reality simulating human breathing and the operation of devices. The work of the stands is based on computer modeling systems implemented on the basis of analytical solutions of systems of differential equations, describing the processes occurring in the apparatus. They function as part of the equipment or synchronously with it. The time of obtaining the result is the same defining characteristic as the accuracy of the result.The design of programs that provide the solution of simulation problems in real time is carried out using the methods of distributed systems, object-oriented programming, parallel computations, and object-oriented modeling. The combination of these methods makes it possible to use a component-oriented architecture. Its use will allow for quick modelling of software systems that implement the solution of the simulation problem, depending on the design of the device being developed.

Abstract:

Software composition for timely and affordable software development and evolution is one of the oldest pursuits of software engineering. In current software composition techniques, Component-Based Software Development (CBSD) and Aspect-Oriented Software Development (AOSD) have attracted academic and industrial attention. Black box composition used in CBSD provides simple and safe modularization for its strong information hiding, which is, however, the main obstacle for a black box composite to evolve later. This implies that an application developed through black box composition cannot take advantage of Aspect-Oriented Programming (AOP) used in AOSD. On the contrary, AOP enhances maintainability and comprehensibility by modularizing concerns crosscutting multiple components but lacks the support for the hierarchical and external composition of aspects themselves and compromises the important software engineering principles such as encapsulation, which is almost perfectly supported in black box composition. The role and role model have been recognized to have many similarities with CBSD and AOP but have significant differences with those composition techniques as well. Although each composition paradigm has its own advantages and disadvantages, there is no substantial support to realize the synergy of these composition paradigms; the black box composition, AOP, and role model. In this paper, a new composition technique based on representational abstraction of the relationship between component instances is introduced. The model supports the simple, elegant, and dynamic composition of components with its declarative form and provides the hooks through which an aspect can evolve and a parallel developed aspect can be merged at the instance level.

Abstract:

Teleoperated robots are used to perform tasks that human operators cannot carry out because of the nature of the tasks themselves or the hostile nature of the working environment. Though many control architectures have been defined for developing these kinds of systems reusing common components, none has attained all its objectives because of the high variability of system behaviors. This paper presents a new architectural approach that takes into account the latest advances in robotic architectures while adopting a component-oriented approach. This approach provides a common framework for developing robotized systems with very different behaviors and for integrating intelligent components. The architecture is currently being used, tested and improved in the development of a family of teleoperated robots which perform cleaning of ship-hull surfaces.

Abstract:

The article is aimed at substantiating organizational provisions and developing recommendations for improving the conceptual principles of projecting a computer-based audit system for the activities of performers of entrepreneurial activities. The article proposes the principles of modeling the audit system in the structure of the information service of entrepreneurs, provides proposals for assessing audit risks at different stages of entrepreneurial activity, substantiates methodological approaches to conducting an audit using modern information and communication technologies. It is proved that computer-based audit is an effective instrument for controlling and managing economic security of business entities. When designing the organizational-methodological structure of the audit, it is proposed to use the stages of audit development: confirming, system-oriented, and risk-based audit. When deciding on the creation and operational function of the computer-based audit of the activities of business entities, it is recommended to take into account their size, category, organizational and legal form of management, organizational structure, level of automation of accounting and control procedures. Scientific approaches using the proposed indicator of information security to assessing the state of information security of business entity are defined, their components are: degree of use of information and communication technologies in business processes, status of information threats, and degree of security of information resources. Methodical principles of auditing using modern information and communication technologies are proposed to strengthen control and analytical functions of management with the use of the latest audit systems. It is proved that computer-based audit covers the use of information technologies and software as a method and tools of the auditor in the process of performing the task on the basis of reliability assessment and identification of significant risks of the information system of a business entity.

Abstract:

With the more profound requirements for knowledge resource application in the complex production collaborative design, a complex production design method based on knowledge model driven was put forward with the development trend of intelligent design theory. The knowledge mining oriented the key phases of complex production design process, knowledge modeling with its reuse are the core of the method. The system framework of the design method was structured. This method supports the whole process of product design, it truly realized sharing, reuse and seamless integration among product model, task model and process model through the ontology model as a knowledge carrier. Finally, the thrust bearing-a key component of hydropower generating units, for example verify the correctness of the design methodology and feasibility.

Abstract:

Typically, component-oriented acausal hybrid modeling of complex dynamic systems is implemented by specialized modeling languages. A well-known example is the Modelica language. The specialized nature, complexity of implementation and learning of such languages somewhat limits their development and wide use by developers who know only general-purpose languages. The paper suggests the principle of developing simple to understand and modify Modelica-like system based on the general-purpose programming language Python. The principle consists in: (1) Python classes are used to describe components and their systems, (2) declarative symbolic tools SymPy are used to describe components behavior by difference or differential equations, (3) the solution procedure uses a function initially created using the SymPy lambdify function and computes unknown values in the current step using known values from the previous step, (4) Python imperative constructs are used for simple events handling, (5) external solvers of differential-algebraic equations can optionally be applied via the Assimulo interface, (6) SymPy package allows to arbitrarily manipulate model equations, generate code and solve some equations symbolically. The basic set of mechanical components (1D translational “mass”, “spring-damper” and “force”) is developed. The models of a sucker rods string are developed and simulated using these components. The comparison of results of the sucker rod string simulations with practical dynamometer cards and Modelica results verify the adequacy of the models. The proposed approach simplifies the understanding of the system, its modification and improvement, adaptation for other purposes, makes it available to a much larger community, simplifies integration into third-party software.

Abstract:

This study develops a novel drilling 3D visualization solution based on WebGL, termed as WebDrillingViz, and introduces the system architecture design and software programming implementation. The software is part of the Engineering Technology Internet of Things (IoT) System, interfacing with other software, and also capable of direct hardware interfacing for data retrieval and system control. It is fully web-based, used real time, and used in RTOC (Real-Time Operating Center) of IoT system, which is a software system for drilling process remote monitor and decision. WebDrillingViz uses the most frontier HTML5 technology to realize a brand-new drilling 3D visualization system. The front end is designed in single-page application (SPA) mode and adopts technologies such as angular, bootstrap, and WebGL. The front-end uses single page application (SPA) mode, Angular, Bootstrap, WebGL and other technologies are used. The back-end data services provide data interface support for front-end visualization applications based on HTTP protocol which uses NodeJS, a lightweight development platform suitable for cloud platform, and Restify to realize a REST JSON API. Both sides are using the same object-oriented oriented development language—TypeScript. The front-end develops an easy-to-extend 3D visualization class library based on WebGL for drilling. It is encapsulated as Angular modularization to form an Angular component, which can be used standalone or integrated into other Angular applications. At the same time, the back-end microservice architecture combined with container and cloud technology is easy to maintain, deploy, and expand and has the advantages of being lightweight, cross-platform, flexible, and efficient. Using HTML5 standard and Bootstrap's responsive layout achieves cross-platform, which can support different operating systems and screen sizes. The system has better robustness and maintainability, thanks to the object-oriented and strong typing characteristics of TypeScript. Practical application shows that WebDrillingViz is efficient, capable of visualization of large drilling 3D scene, and compatible with mainstream devices, such as Windows, Linux, macOS, iOS, and Android. The use of open standards-based modern web technologies and data format enables a more lightweight and economical solution. WebGL, Angular, NodeJS, and TypeScript formed a powerful technology stack, which can be used as an excellent reference for other browser-based visualization development.

Abstract:

AbstractTo work in a higher abstraction level is of critical importance for the development of multiagent systems (MAS) since it is almost impossible to observe code-level details of such systems due to their internal complexity, distributedness and openness. As one of the promising software development approaches, model-driven development (MDD) aims to change the focus of software development from code to models. This paradigm shift, introduced by the MDD, may also provide the desired abstraction level during the development of MASs. For this reason, MDD of autonomous agents and MASs has been recognized and become one of the research topics in agent-oriented software engineering (AOSE) area. Contributions are mainly based on the model-driven architecture (MDA), which is the most famous and in-use realization of MDD. Within this direction, AOSE researchers define MAS metamodels in various abstraction levels and apply model transformations between the instances of these metamodels in order to provide rapid and efficient implementation of the MASs in various platforms. Reorganization of the existing MAS development methodologies to support model-driven agent development is another emerging research track. In this paper, we give a state of the art survey on above mentioned model-driven MAS development research activities and evaluate the introduced approaches according to five quality criteria we define on model-driven MAS engineering: (1) definition of a platform independent MAS metamodel, (2) model-to-model transformability, (3) model-to-code transformability, (4) support for multiple MAS platforms and finally (5) tool support for software modeling and code generation. Our evaluation has shown that the researchers contributed to the area by providing MDD processes in which design of the MASs are realized at a very high abstraction level and the software for these MASs are developed as a result of the application of a series of model transformations. However, most of the approaches are incapable of supporting multiple MAS environments due to the restricted specifications of their metamodels and model transformations. Also efficiency and practicability of the proposed methodologies are under debate since the amount and quality of the executable MAS components, gained automatically, appear to be not sufficient.

Abstract:

The automotive industry has been rapidly transforming and moving further from internal combustion engines, towards hybrid or electric vehicles. A key component for the successful adoption of the aforementioned approach is their Energy Management Systems (EMSs). In the proposed work, we describe in detail a custom EMS, with unique characteristics, which was developed and installed in a hydrogen-powered prototype vehicle. The development of the EMS was based on off-the-shelf components and the adoption of a Robot Operating System (ROS), a meta-operating system developed for robotic-oriented applications. Our approach offers soft real-time control and the ability to organize the controller of the EMS as a straightforward and comprehensive message system that provides the necessary inter-process communication at the core of the EMS control procedure. We describe in detail the software-based implementation and validate our approach through experimental results obtained while the prototype was racing in a low-energy consumption competition.

Abstract:

Looking at the higher learning institutions, there is no question that the current methods for paying student fees are inefficient, inconvenient, and wasteful of time. In addition, the rise in the number of students studying in higher learning institutions has led to long frustrating queues and overcrowding in most financial institutions during payment of student fees. This paper sought to design and implement a secure block chain-based payment system for higher learning institutions in developing countries. Students are to use the proposed payment system to pay tuition fees and other student fees to their respective higher educational institution. In addition, students are to use the proposed payment to pay for goods and services provided by the institution and other merchants in the institution’s premises. In this study, object oriented software development methodology was used to implement the proposed payment system. The proposed system consists of a mobile e-wallet, RESTful API, and blockchain as the core component of the API.

Abstract:

The article substantiates the relevance of the introduction of new methods and technologies of teaching in modern engineering-pedagogical education, which will provide quality training of specialists in the field of computer 3D design in connection with demand of society for the use of three-dimensional design technologies in all fields of human activity: engineering, education, art , architecture, design, construction, etc. The following methods of studying 3D design systems in professional training of future engineers-teachers in the field of computer technology have been considered in accordance with three directions of three-dimensional design: engineering design of technological. architectural objects, and production systems; development of modern methodical materials for studying three-dimensional design and printing technologies; teaching technologies of three-dimensional design to future specialists, whose professional activity involves the use of three-dimensional graphics. A review of scientific publications devoted to the study of three-dimensional design in higher education has been carried out. The analysis of current methods of teaching graphic disciplines states to the fact that most of them provide the formation of skills and abilities of students in the system of two-dimensional graphic training, whereas the issues of three-dimensional design remain poorly studied. The purpose of the article is to describe the methodology for teaching three-dimensional design systems to future engineers-teachers in the field of computer technology using the project method to determine the optimal strategy for development of both engineering and pedagogical components of their professional development. The article studies the use of the project method based on a systematic approach in the study of three-dimensional computer design to enhance the creative and research potential of students of engineering-pedagogical specialities. The paper introduces a model of professional activity in 3D design with a detailed justification of all its stages: analysis, animation, modeling, texturing, visualization and report for students’ effective understanding of the sequence of these stages and the peculiarities of working with them; Autodesk software product – 3ds MAX was used as the main design tool. An algorithm for the use of the project method was developed on the example of studying the discipline “Three-dimensional modeling and animation”. The following prospects for further research have been proposed: the definition of theoretical foundations and the development of teaching methods for three-dimensional computer design for future engineers-teachers in the process of studying professionally oriented disciplines.

Abstract:

The complexity of floating offshore wind turbine (FOWT) systems, with their coupled motions, aero-hydro-servo-elastic dynamics, as well as non-linear system behavior and components, makes modeling and simulation indispensable. To ensure the correct implementation of the multi-physics, the engineering models and codes have to be verified and, subsequently, validated for proving the realistic representation of the real system behavior. Within the IEA (International Energy Agency) Wind Task 23 Subtask 2 offshore code-to-code comparisons have been performed. Based on these studies, using the OC3 phase IV spar-buoy FOWT system, the Modelica for Wind Turbines (MoWiT) library, developed at Fraunhofer IWES, is verified. MoWiT is capable of fully-coupled aero-hydro-servo-elastic simulations of wind turbine systems, onshore, offshore bottom-fixed, or even offshore floating. The hierarchical programing and multibody approach in the object-oriented and equation-based modeling language Modelica have the advantage (over some other simulation tools) of component-based modeling and, hence, easily modifying the implemented system model. The code-to-code comparisons with the results from the OC3 studies show, apart from expected differences due to required assumptions in consequence of missing data and incomplete information, good agreement and, consequently, substantiate the capability of MoWiT for fully-coupled aero-hydro-servo-elastic simulations of FOWT systems.

Abstract:

AbstractRapid development of community health information networks raises the issue of semantic interoperability between distributed and heterogeneous systems. Indeed, operational health information systems originate from heterogeneous teams of independent developers and have to cooperate in order to exchange data and services. A good cooperation is based on a good understanding of the messages exchanged between the systems. The main issue of semantic interoperability is to ensure that the exchange is not only possible but also meaningful. The main objective of this paper is to analyze semantic interoperability from a software engineering point of view. It describes the principles for the design of a semantic mediator (SM) in the framework of a distributed object manager (DOM). The mediator is itself a component that should allow the exchange of messages independently of languages and platforms. The functional architecture of such a SM is detailed. These principles have been partly applied in the context of the HEllOS object-oriented software engineering environment. The resulting service components are presented with their current state of achievement.

Abstract:

Geographic Information System is widely used in different fields and it has different backgrounds and models these are introduced briefly in this article. Based on the analysis of development background, application and the related trends of development both at home and abroad for pipe network system, some problems are indicated, such as, building the pipe network geographic information system needs to grasp the key technology, including component technology, object-oriented design, databases and pipe network modeling technology, according to the data characteristics of gas pipe network and using MS Windows 2000 (Advance) Server or UNIX as operating system. The overall design plan of Daqing gas company pipe network information system based on the way of Web is put forward and selecting Windows 2000 Professional as client computing operating system for running the ArcInfo 9.x application program and using other geographic information system software to build the geographic information development platform that gives priority to the ArcGIS of ESRI company. The management method of geographic information system is mainly database, elaborating the implementation of all systematic functions and the management process of data and corresponding software and the development of user interface, the access to the database are finished as well. Design of user-interface is practical and convenient, which has the characteristics of easy and flexible operation situation and high visibility. Therefore, it indicates the application of geographic information system technique is to lay a solid foundation for the standardization of enterprises, in the meantime, it can effectively promote the urban construction and economic development.

Abstract:

Many large cities rely on Mass Rapid Transit (MRT) to increase passenger mobility. For efficiency, MRT stations should be arranged to attract maximal number of travelers. It is therefore important to develop methods for estimating MRT ridership forecasting models, which are important for policies on land use development or new MRT lines. Direct ridership models (DRMs) at the station level are superior in estimating the benefits of transit-oriented development policies. In this paper, a principal component regression (PCR) is proposed to overcome the issue of multicollinearity that widely occurs in multivariate regression analyses for DRM modeling, especially the ordinary least squares regression. Based on the analysis of 72 MRT stations in Wuhan, China, four principal components are obtained to explain the potential linkage to MRT ridership, which include built-environment related factors, jobs-housing spatial structure related factors, station attributes, and the large compound. Nineteen significant determinants have been identified, among which the four factors of office building area, land use mix, the number of restaurants, and financial institutions are the most influential factors. Built-environment-related factors exert more significant impact on MRT ridership than others. The distance to city center and the number of bus lines around stations have negative association with MRT demand. The proposed PCR-based DRM provides insights for forecasting transit demand brought about by new metro lines and forecasting the consequences of land use development.

Abstract:

Industrial Internet of Things practitioners are adopting the concept of digital twins at an accelerating pace. The features of digital twins range from simulation and analysis to real-time sensor data and system integration. Implementation examples of modeling-oriented twins are becoming commonplace in academic literature, but information management-focused twins that combine multiple systems are scarce. This study presents, analyzes, and draws recommendations from building a multi-component digital twin as an industry-university collaboration project and related smaller works. The objective of the studied project was to create a prototype implementation of an industrial digital twin for an overhead crane called “Ilmatar”, serving machine designers and maintainers in their daily tasks. Additionally, related cases focus on enhancing operation. This paper describes two tools, three frameworks, and eight proof-of-concept prototypes related to digital twin development. The experiences show that good-quality Application Programming Interfaces (APIs) are significant enablers for the development of digital twins. Hence, we recommend that traditional industrial companies start building their API portfolios. The experiences in digital twin application development led to the discovery of a novel API-based business network framework that helps organize digital twin data supply chains.

Abstract:

The paper analyzes the methods of teaching HTML, CSS, JavaScript. The expediency of learning these technologies by students of pedagogical universities is substantiated. The essence of the new method of teaching HTML and CSS is that the emphasis in the content component is shifted to the study of: 1 - visual objects of a hypertext document; 2 - rules of their unique identification; 3 - setting the basic properties and styling properties of these objects; 4 - modeling of hypertext page design based on instances of block objects; 5 - consolidation of knowledge of HTML, CSS languages through the use of these technologies in the formation of reporting sites for laboratory work; 6 - formation of the basis for mastering the technologies of dynamic adjustment of styles by means of JavaScript language. The new methodology involves the use of visual objects of a hypertext document to generate reports to the thematic sections of the course Computer Science such as Office Software, Mathematical Packages, Computer Graphics, etc. Internet hosting is a learning tool for new methods. It is recommended to use this tool to highlight the results of students’ laboratory work. The technique was experimentally implemented using distance learning tools. Analysis of the results of the pedagogical experiment confirmed the feasibility of introducing the new methodology. The conclusions of the work are that the introduction of this technique increases the effectiveness of training. The basis for the positive result is: 1) providing an individualized approach to teaching Computer Science; 2) creating conditions for mastering the concept of modeling through practical application; 3) the formation of understanding of the object-oriented essence of the language of HTML and CSS styles; 4) assistance in mastering modern network technologies; 5) increasing the importance of programming in mastering Informatics. This technique forms the basis for mastering the technologies of object-oriented programming in JavaScript and becomes the basis for further mastering of technologies for the development of Web-oriented information systems. The prospects of this study are seen in the formation of a holistic perception of computer science as a science through the study of Web-programming.

Abstract:

Purpose Software fault prediction is an important concept that can be applied at an early stage of the software life cycle. Effective prediction of faults may improve the reliability and testability of software systems. As service-oriented architecture (SOA)-based systems become more and more complex, the interaction between participating services increases frequently. The component services may generate enormous reports and fault information. Although considerable research has stressed on developing fault-proneness prediction models in service-oriented systems (SOS) using machine learning (ML) techniques, there has been little work on assessing how effective the source code metrics are for fault prediction. The paper aims to discuss this issue. Design/methodology/approach In this paper, the authors have proposed a fault prediction framework to investigate fault prediction in SOS using metrics of web services. The effectiveness of the model has been explored by applying six ML techniques, namely, Naïve Bayes, Artificial Networks (ANN), Adaptive Boosting (AdaBoost), decision tree, Random Forests and Support Vector Machine (SVM), along with five feature selection techniques to extract the essential metrics. The authors have explored accuracy, precision, recall, f-measure and receiver operating characteristic curves of the area under curve values as performance measures. Findings The experimental results show that the proposed system can classify the fault-proneness of web services, whether the service is faulty or non-faulty, as a binary-valued output automatically and effectively. Research limitations/implications One possible threat to internal validity in the study is the unknown effects of undiscovered faults. Specifically, the authors have injected possible faults into the classes using Java C3.0 tool and only fixed faults are injected into the classes. However, considering the Java C3.0 community of development, testing and use, the authors can generalize that the undiscovered faults should be few and have less impact on the results presented in this study, and that the results may be limited to the investigated complexity metrics and the used ML techniques. Originality/value In the literature, only few studies have been observed to directly concentrate on metrics-based fault-proneness prediction of SOS using ML techniques. However, most of the contributions are regarding the fault prediction of the general systems rather than SOS. A majority of them have considered reliability, changeability, maintainability using a logging/history-based approach and mathematical modeling rather than fault prediction in SOS using metrics. Thus, the authors have extended the above contributions further by applying supervised ML techniques over web services metrics and measured their capability by employing fault injection methods.

Abstract:

Model predictive control is theoretically suitable for optimal control of the building, which provides a framework for optimizing a given cost function (e.g., energy consumption) subject to constraints (e.g., thermal comfort violations and HVAC system limitations) over the prediction horizon. However, due to the buildings’ heterogeneous nature, control-oriented physical models’ development may be cost and time prohibitive. Data-driven predictive control, integration of the “Internet of Things”, provides an attempt to bypass the need for physical modeling. This work presents an innovative study on a data-driven predictive control (DPC) for building energy management under the four-tier building energy Internet of Things architecture. Here, we develop a cloud-based SCADA building energy management system framework for the standardization of communication protocols and data formats, which is favorable for advanced control strategies implementation. Two DPC strategies based on building predictive models using the regression tree (RT) and the least-squares boosting (LSBoost) algorithms are presented, which are highly interpretable and easy for different stakeholders (end-user, building energy manager, and/or operator) to operate. The predictive model’s complexity is reduced by efficient feature selection to decrease the variables’ dimensionality and further alleviate the DPC optimization problem’s complexity. The selection is dependent on the principal component analysis (PCA) and the importance of disturbance variables (IoD). The proposed strategies are demonstrated both in residential and office buildings. The results show that the DPC-LSBoost has outperformed the DPC-RT and other existing control strategies (MPC, TDNN) in performance, scalability, and robustness.

Abstract:

In the context of globalization processes, the professional activity of future economists is characterized by dynamism, complexity and uncertainty of conditions. Informatization and fundamentalization of knowledge provide relevance to such components of professional competence of the future economist as the ability to think analytically, solve predictive tasks using software products, implement economic and mathematical modeling using modern information systems, apply computer data processing technologies to solve economic problems. This provides the importance of mathematical training, as one of the fundamental, which primarily forms the skills of abstract thinking, analysis and synthesis. Thus, a new function of an educational institution arises in the process of providing educational services - the formation of a competence model of professional education of specialists. The article substantiates the expediency of introducing mathematical modeling based on Mathcad in the process of forming professional competence of future economists. The essence of the concepts of "professional competence" and "mathematical competence" of future economists are considered. It is argued that mathematical training is an important component of professional competence. Today, it is the results of mathematical modeling of real processes that generate the most progressive directions of development in science and technology. Therefore, the concept of an economic-mathematical model plays a fundamental role in the training of economists. The formation of professional competence of future economists, anticipating the integration of professional and personal development, should be carried out using mathematical modeling, starting with junior courses. However, despite the fact that the mathematical model of the process or phenomenon being studied in economics is always its generalized abstract reflection, the mathematical apparatus used is usually quite cumbersome. This is a significant obstacle in strengthening the applied orientation of mathematics in the first years. In our opinion, one of the effective ways to eliminate certain contradictions is the introduction of information technologies The purpose of this publication is to substantiate the feasibility of introducing mathematical modeling based on Mathcad in the process of forming professional competence of future economists, to determine the main didactic requirements and explore the impact of technology on the main components of mathematical training: motivational-value, cognitive, operational-activity, communicative. On the basis of what was studied, we concluded that for a specific specialty it is worth highlighting professionally significant topics, questions, concepts of classical sections of mathematics, which have their application in professionally-oriented disciplines. The introduction from the first course of professional-oriented tasks related to the specialty, even at the level of the simplest models, allows you to implement the principle of continuity in learning. Since the new content of mathematical disciplines becomes a reliable base for the study of professionally-oriented, within which more complex models are studied, with the help of which the key problems of the future profession are solved In the process of mathematical training of specialists, we used the universal integrated system Mathcad, which allows you to simply and visually enter the original data, carry out the traditional mathematical description of solutions and get the results of calculations using graphical interpretation. This made it possible to consider the simplest mathematical models and, using a complex mathematical apparatus, to develop universal models and algorithms. The main mathematical models of economic systems that are appropriate to consider in mathematical courses are highlighted. Examples of mathematical modeling based on Mathcad are given. The advantages of introducing mathematical modeling into the process of professional training are demonstrated. On the basis of the study, conclusions were drawn that mathematical modeling based on Mathcad allows to improve the main components of the process of mathematical preparation: - motivational and value (the formation of a sustained interest in the mastery of mathematical knowledge and information technology with a view to their application in professional and research activities); - cognitive (obtaining fundamental knowledge from the classical sections of mathematics and the ability to apply them in the process of mathematical modeling) - operational-activity (self-realization in professional activity by means of mathematical modeling based on the integration of knowledge across professional-oriented and mathematical disciplines using information technologies); - communicative (possession of ways of presenting the results of its activity-communicative (possession of ways of presenting the results of its activities). The study showed that the introduction of mathematical modeling should provide the following didactic requirements: - a fairly correct idea of ​​the teacher about the holistic picture of the future educational and professional activities of the student; - definition of goals and purpose of the introduced new content in the content of mathematical disciplines; - Compliance of the learning task with the ideas of the personal approach (updating the personal functions of specialists, consistency with the problems of practical training in production); - approbation of the skills and skills produced in practice. This allows you to organize student-centric education.

Abstract:

Development of new offshore projects in the Arctic begins with comprehensive analysis of Marine Transport System’s (MTS) performance. At the same time researchers with different professional orientation (shipbuilders, logisticians, economists and managers etc.) are often have narrow view while making their investigations of MTS, focusing mostly at corresponding familiar sides of the system. It leads to specific “disproportional” description of MTS’s when some components considered in detail but other are out of investigation that in some cases may result in inaccurate conclusions. This makes authors sure that the only proper approach to investigate complex arctic MTS should be multidisciplinary. Article contains the description of integrated R&D project fulfilled at State Krylov Research Centre and devoted to realization of multidisciplinary methodology and corresponding software for arctic MTS design and analysis. Integrated software solution is based on object-oriented paradigm and combines such scientific areas as geographic information systems (GIS), shipbuilding disciplines, discrete event and agent-based simulation models. Theoretical base of the solution and its architecture envelops the following subject fields: ship design and fleet sizing, resistance and propulsion of ships including ice-going capabilities, vessel routing in ice, scheduling, downstream and upstream logistics, navigation process simulation, environment conditions stochastic modeling, operation research, queue theory, economy and management. Software has a modular structure with open and expansible architecture, which makes possible to add new functionality and upgrade existing program blocks in accordance with demands of specific project. Simulation model serve as the center of multidisciplinary integration because this technology allows reproducing behavior of different objects of MTS under dynamic conditions. Realized in AnyLogic ® framework simulation model replicates vessel operation process according to individual schedule generated by special planning component. Vessel’s activities simulated in modeled time with consideration of special aspects of operational planning and resolving accidents. Main model also includes specialized sub-models that provide opportunity to describe many local dynamic essences such as processes of offshore drilling and production, freeze-up of channel in fast ice, different ship interaction aspects, “weather windows” in ports etc. Number of instances are also given in the article, they allows to conclude that adequate and consistent model of MTS working in heavy ice-conditions or having complex organization scheme could be obtained only by means of simulation modeling under multidiscipline approach.

Abstract:

Context: Automatic speech recognition requires the development of language and acoustic models for different existing dialects. The purpose of this research is the training of an acoustic model, a statistical language model and a grammar language model for the Spanish language, specifically for the dialect of the city of San Jose de Cucuta, Colombia, that can be used in a command control system. Existing models for the Spanish language have problems in the recognition of the fundamental frequency and the spectral content, the accent, pronunciation, tone or simply the language model for Cucuta's dialect.Method: in this project, we used Raspberry Pi B+ embedded system with Raspbian operating system which is a Linux distribution and two open source software, namely CMU-Cambridge Statistical Language Modeling Toolkit from the University of Cambridge and CMU Sphinx from Carnegie Mellon University; these software are based on Hidden Markov Models for the calculation of voice parameters. Besides, we used 1913 recorded audios with the voice of people from San Jose de Cucuta and Norte de Santander department. These audios were used for training and testing the automatic speech recognition system.Results: we obtained a language model that consists of two files, one is the statistical language model (.lm), and the other is the jsgf grammar model (.jsgf). Regarding the acoustic component, two models were trained, one of them with an improved version which had a 100 % accuracy rate in the training results and 83 % accuracy rate in the audio tests for command recognition. Finally, we elaborated a manual for the creation of acoustic and language models with CMU Sphinx software.Conclusions: The number of participants in the training process of the language and acoustic models has a significant influence on the quality of the voice processing of the recognizer. The use of a large dictionary for the training process and a short dictionary with the command words for the implementation is important to get a better response of the automatic speech recognition system. Considering the accuracy rate above 80 % in the voice recognition tests, the proposed models are suitable for applications oriented to the assistance of visual or motion impairment people.

Abstract:

1. Introduction This Special Issue (Part 2) expands upon the theme “Building Local Capacity for Long-term Disaster Resilience” presented in Special Issue Part 1 (JDR Volume 5, Number 2, April 2010) by examining the evolving concept of disaster resilience and providing additional reflections upon various aspects of its meaning. Part 1 provided a mixed set of examples of resiliency efforts, ranging from administrative challenges of integrating resilience into recovery to the analysis of hazard mitigation plans directed toward guiding local capability for developing resiliency. Resilience was broadly defined in the opening editorial of Special Issue Part 1 as “the capacity of a community to: 1) survive a major disaster, 2) retain essential structure and functions, and 3) adapt to post-disaster opportunities for transforming community structure and functions to meet new challenges.” In this editorial essay we first explore in Section 2 the history of resilience and then locate it within current academic and policy debates. Section 3 presents summaries of the papers in this issue. 2. Why is Resilience a Contemporary Theme? There is growing scholarly and policy interest in disaster resilience. In recent years, engineers [1], sociologists [2], geographers [3], economists [4], public policy analysts [5, 6], urban planners [7], hazards researchers [8], governments [9], and international organizations [10] have all contributed to the literature about this concept. Some authors view resilience as a mechanism for mitigating disaster impacts, with framework objectives such as resistance, absorption, and restoration [5]. Others, who focus on resiliency indicators, see it as an early warning system to assess community resiliency status [3, 8]. Recently, it has emerged as a component of social risk management that seeks to minimize social welfare loss from catastrophic disasters [6]. Manyena [11] traces scholarly exploration of resilience as an operational concept back at least five decades. Interest in resilience began in the 1940s with studies of children and trauma in the family and in the 1970s in the ecology literature as a useful framework to examine and measure the impact of assault or trauma on a defined eco-system component [12]. This led to modeling resilience measures for a variety of components within a defined ecosystem, leading to the realization that the systems approach to resiliency is attractive as a cross-disciplinary construct. The ecosystem analogy however, has limits when applied to disaster studies in that, historically, all catastrophic events have changed the place in which they occurred and a “return to normalcy” does not occur. This is true for modern urban societies as well as traditional agrarian societies. The adoption of “The Hyogo Framework for Action 2005-2015” (also known as The Hyogo Declaration) provides a global linkage and follows the United Nations 1990s International Decade for Natural Disaster Reduction effort. The 2005 Hyogo Declaration’s definition of resilience is: “The capacity of a system, community or society potentially exposed to hazards to adapt by resisting or changing in order to reach and maintain an acceptable level of functioning and structure.” The proposed measurement of resilience in the Hyogo Declaration is determined by “the degree to which the social system is capable of organizing itself to increase this capacity for learning from past disasters for better future protection and to improve risk reduction measures.” While very broad, this definition contains two key concepts: 1) adaptation, and 2) maintaining acceptable levels of functioning and structure. While adaptation requires certain capacities, maintaining acceptable levels of functioning and structure requires resources, forethought, and normative action. Some of these attributes are now reflected in the 2010 National Disaster Recovery Framework published by the U.S. Federal Emergency Management Agency (FEMA) [13]. With the emergence of this new thinking on resilience related to disasters, it is now a good time to reflect on the concept and assess what has recently been said in the literature. Bruneau et al. [1] offer an engineering sciences definition for community seismic resilience: “The ability of social units (e.g., organizations, communities) to mitigate hazards, contain the effects of disasters when they occur, and carry out recovery activities in ways that minimize social disruption and mitigate the effects of future earthquakes.” Rose [4] writes that resiliency is the ability of a system to recover from a severe shock. He distinguishes two types of resilience: (1) inherent – ability under normal circ*mstances and (2) adaptive – ability in crisis situations due to ingenuity or extra effort. By opening up resilience to categorization he provides a pathway to establish multi-disciplinary approaches, something that is presently lacking in practice. Rose is most concerned with business disruption which can take extensive periods of time to correct. In order to make resource decisions that lower overall societal costs (economic, social, governmental and physical), Rose calls for the establishment of measurements that function as resource decision allocation guides. This has been done in part through risk transfer tools such as private insurance. However, it has not been well-adopted by governments in deciding how to allocate mitigation resources. We need to ask why the interest in resilience has grown? Manyena [11] argues that the concept of resilience has gained currency without obtaining clarity of understanding, definition, substance, philosophical dimensions, or applicability to disaster management and sustainable development theory and practice. It is evident that the “emergency management model” does not itself provide sufficient guidance for policymakers since it is too command-and-control-oriented and does not adequately address mitigation and recovery. Also, large disasters are increasingly viewed as major disruptions of the economic and social conditions of a country, state/province, or city. Lowering post-disaster costs (human life, property loss, economic advancement and government disruption) is being taken more seriously by government and civil society. The lessening of costs is not something the traditional “preparedness” stage of emergency management has concerned itself with; this is an existing void in meeting the expanding interests of government and civil society. The concept of resilience helps further clarify the relationship between risk and vulnerability. If risk is defined as “the probability of an event or condition occurring [14]#8221; then it can be reduced through physical, social, governmental, or economic means, thereby reducing the likelihood of damage and loss. Nothing can be done to stop an earthquake, volcanic eruption, cyclone, hurricane, or other natural event, but the probability of damage and loss from natural and technological hazards can be addressed through structural and non-structural strategies. Vulnerability is the absence of capacity to resist or absorb a disaster impact. Changes in vulnerability can then be achieved by changes in these capacities. In this regard, Franco and Siembieda describe in this issue how coastal cities in Chile had low resilience and high vulnerability to the tsunami generated by the February 2010 earthquake, whereas modern buildings had high resilience and, therefore, were much less vulnerable to the powerful earthquake. We also see how the framework for policy development can change through differing perspectives. Eisner discusses in this issue how local non-governmental social service agencies are building their resilience capabilities to serve target populations after a disaster occurs, becoming self-renewing social organizations and demonstrating what Leonard and Howett [6] term “social resilience.” All of the contributions to this issue illustrate the lowering of disaster impacts and strengthening of capacity (at the household, community or governmental level) for what Alesch [15] terms “post-event viability” – a term reflecting how well a person, business, community, or government functions after a disaster in addition to what they might do prior to a disaster to lessen its impact. Viability might become the definition of recovery if it can be measured or agreed upon. 3. Contents of This Issue The insights provided by the papers in this issue contribute greater clarity to an understanding of resilience, together with its applicability to disaster management. In these papers we find tools and methods, process strategies, and planning approaches. There are five papers focused on local experiences, three on state (prefecture) experiences, and two on national experiences. The papers in this issue reinforce the concept of resilience as a process, not a product, because it is the sum of many actions. The resiliency outcome is the result of multiple inputs from the level of the individual and, at times, continuing up to the national or international organizational level. Through this exploration we see that the “resiliency” concept accepts that people will come into conflict with natural or anthropogenic hazards. The policy question then becomes how to lower the impact(s) of the conflict through “hard or soft” measures (see the Special Issue Part 1 editorial for a discussion of “hard” vs. “soft” resilience). Local level Go Urakawa and Haruo Hayashi illustrate how post-disaster operations for public utilities can be problematic because many practitioners have no direct experience in such operations, noting that the formats and methods normally used in recovery depend on personal skills and effort. They describe how these problems are addressed by creating manuals on measures for effectively implementing post-disaster operations. They develop a method to extract priority operations using business impact analysis (BIA) and project management based business flow diagrams (BFD). Their article effectively illustrates the practical aspects of strengthening the resiliency of public organizations. Richard Eisner presents the framework used to initiate the development and implementation of a process to create disaster resilience in faith-based and community-based organizations that provide services to vulnerable populations in San Francisco, California. A major project outcome is the Disaster Resilience Standard for Community- and Faith-Based Service Providers. This “standard” has general applicability for use by social service agencies in the public and non-profit sectors. Alejandro Linayo addresses the growing issue of technological risk in cities. He argues for the need to understand an inherent conflict between how we occupy urban space and the technological risks created by hazardous chemicals, radiation, oil and gas, and other hazardous materials storage and movement. The paper points out that information and procedural gaps exist in terms of citizen knowledge (the right to know) and local administrative knowledge (missing expertise). Advances and experience accumulated by the Venezuela Disaster Risk Management Research Center in identifying and integrating technological risk treatment for the city of Merida, Venezuela, are highlighted as a way to move forward. L. Teresa Guevara-Perez presents the case that certain urban zoning requirements in contemporary cities encourage and, in some cases, enforce the use of building configurations that have been long recognized by earthquake engineering as seismically vulnerable. Using Western Europe and the Modernist architectural movement, she develops the historical case for understanding discrepancies between urban zoning regulations and seismic codes that have led to vulnerable modern building configurations, and traces the international dissemination of architectural and urban planning concepts that have generated vulnerability in contemporary cities around the world. Jung Eun Kang, Walter Gillis Peaco*ck, and Rahmawati Husein discuss an assessment protocol for Hazard Mitigation Plans applied to 12 coastal hazard zone plans in the state of Texas in the U.S. The components of these plans are systematically examined in order to highlight their respective strengths and weaknesses. The authors describe an assessment tool, the plan quality score (PQS), composed of seven primary components (vision statement, planning process, fact basis, goals and objectives, inter-organizational coordination, policies & actions, and implementation), as well as a component quality score (CQS). State (Prefecture) level Charles Real presents the Natural Hazard Zonation Policies for Land Use Planning and Development in California in the U.S. California has established state-level policies that utilize knowledge of where natural hazards are more likely to occur to enhance the effectiveness of land use planning as a tool for risk mitigation. Experience in California demonstrates that a combination of education, outreach, and mutually supporting policies that are linked to state-designated natural hazard zones can form an effective framework for enhancing the role of land use planning in reducing future losses from natural disasters. Norio Maki, Keiko Tamura, and Haruo Hayashi present a method for local government stakeholders involved in pre-disaster plan making to describe performance measures through the formulation of desired outcomes. Through a case study approach, Nara and Kyoto Prefectures’ separate experiences demonstrate how to conduct Strategic Earthquake Disaster Reduction Plans and Action Plans that have deep stakeholder buy-in and outcome measurability. Nara’s plan was prepared from 2,015 stakeholder ideas and Kyoto’s plan was prepared from 1,613 stakeholder ideas. Having a quantitative target for individual objectives ensures the measurability of plan progress. Both jurisdictions have undertaken evaluations of plan outcomes. Sandy Meyer, Eugene Henry, Roy E. Wright and Cynthia A. Palmer present the State of Florida in the U.S. and its experience with pre-disaster planning for post-disaster redevelopment. Drawing upon the lessons learned from the impacts of the 2004 and 2005 hurricane seasons, local governments and state leaders in Florida sought to find a way to encourage behavior that would create greater community resiliency in 2006. The paper presents initial efforts to develop a post-disaster redevelopment plan (PDRP), including the experience of a pilot county. National level Bo-Yao Lee provides a national perspective: New Zealand’s approach to emergency management, where all hazard risks are addressed through devolved accountability. This contemporary approach advocates collaboration and coordination, aiming to address all hazard risks through the “4Rs” – reduction, readiness, response, and recovery. Lee presents the impact of the Resource Management Act (1991), the Civil Defence Emergency Management Act (2002), and the Building Act (2004) that comprise the key legislation influencing and promoting integrated management for environment and hazard risk management. Guillermo Franco and William Siembieda provide a field assessment of the February 27, 2010, M8.8 earthquake and tsunami event in Chile. The papers present an initial damage and life-loss review and assessment of seismic building resiliency and the country’s rapid updating of building codes that have undergone continuous improvement over the past 60 years. The country’s land use planning system and its emergency management system are also described. The role of insurance coverage reveals problems in seismic coverage for homeowners. The unique role of the Catholic Church in providing temporary shelter and the central government’s five-point housing recovery plan are presented. A weakness in the government’s emergency management system’s early tsunami response system is noted. Acknowledgements The Editorial Committee extends its sincere appreciation to both the contributors and the JDR staff for their patience and determination in making Part 2 of this special issue possible. Thanks also to the reviewers for their insightful analytic comments and suggestions. Finally, the Committee wishes to again thank Bayete Henderson for his keen and thorough editorial assistance and copy editing support.

Abstract:

Rapid urbanization rates impact significantly on the nature of Land Cover patterns of the environment, which has been evident in the depletion of vegetal reserves and in general modifying the human climatic systems (Henderson, et al., 2017; Kumar, Masago, Mishra, & f*ckushi, 2018; Luo and Lau, 2017). This study explores remote sensing classification technique and other auxiliary data to determine LULCC for a period of 50 years (1967-2016). The LULCC types identified were quantitatively evaluated using the change detection approach from results of maximum likelihood classification algorithm in GIS. Accuracy assessment results were evaluated and found to be between 56 to 98 percent of the LULC classification. The change detection analysis revealed change in the LULC types in Minna from 1976 to 2016. Built-up area increases from 74.82ha in 1976 to 116.58ha in 2016. Farmlands increased from 2.23 ha to 46.45ha and bared surface increases from 120.00ha to 161.31ha between 1976 to 2016 resulting to decline in vegetation, water body, and wetlands. The Decade of rapid urbanization was found to coincide with the period of increased Public Private Partnership Agreement (PPPA). Increase in farmlands was due to the adoption of urban agriculture which has influence on food security and the environmental sustainability. The observed increase in built up areas, farmlands and bare surfaces has substantially led to reduction in vegetation and water bodies. The oscillatory nature of water bodies LULCC which was not particularly consistent with the rates of urbanization also suggests that beyond the urbanization process, other factors may influence the LULCC of water bodies in urban settlements. Keywords: Minna, Niger State, Remote Sensing, Land Surface Characteristics References Akinrinmade, A., Ibrahim, K., & Abdurrahman, A. (2012). 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