System Development Tasks Research Articles

An Objective Evaluation Approach for Safety-Relevant Steering Feedback on a Test Bench

Since electric power steering has replaced hydraulic power steering in passenger cars, steering feedback has become a challenging task in steering system development. Test benches represent a valid approach for improving steering feedback since they allow investigations without the real vehicle. To improve the applicability of feedback evaluations on a steering test bench, this paper aims to identify improvements in the current evaluation technique to obtain objective parameters that correlate with a subjective evaluation of safety-relevant steering feedback. Therefore, a previously reported approach of a chirp rack force excitation, using the magnitude of the transfer function from the rack force to steering wheel torque to describe steering feedback, is compared to a similar identification approach in which a pseudo-random-binary-sequence signal is utilized. To reflect realistic applications, driving maneuvers are transferred to the test bench to identify relevant objective data. For a valid representation of the steering wheel operation, a human grip model is implemented and compared to a fixed steering wheel angle control. It is shown that the random signal represents a valid and, on average, improved approach to objectively evaluating the steering feedback. Furthermore, a recommendation can be made to include the human grip model in the feedback evaluation tests, as the identified correlation results are improved by its inclusion. The identified parameters and methods represent an improvement for future steering feedback development.

Design of Data Persistence for Network Resources Recommendation System Based on Hibernate Architecture

The Python language is more focused on problem solving, which is in line with the era of computational thinking, and the teaching of Python language course requires students to systematically master the basic concepts, programming ideas and programming techniques of Python, and have the idea of object-oriented software design technology. We have developed a recommended system of online resources for "Python Programming" course to solve the problem of students' access to resources and deepen the teaching reform of the Python Programming course. Data persistence is an important task in system development, and Hibernate is the most popular O/R Mapping framework. The data persistence design based on Hibernate solves the key technical problems in the development of the network resource recommendation system for the "Python Programming" course, and improves the efficiency and maintainability of the software system development.

Regulatory and legal ensuring the ophthalmic services and assistance provision in Ukraine

Regulatory and legal ensuring the ophthalmic services and assistance provision in Ukraine

Content conceptualization and issues of solving the education system development tasks for the purposes to achieve sustainable development of the region social area

The education sector is one of the most vulnerable levels of public social management. The main contradiction here lies in the presence of a purpose to perform a social order for the creation of conditions for receiving education by various categories of citizens and market mechanisms of education relationship adjustment. In conditions of unstable environment, the development of the education strategic concept through 2035 appears to be a vital prerequisite to forecast the potential of this social management branch. Regional development context forms the required conditions for adapting the concept goals and tasks to the region social and economic development level. The impact of education at social processes in the region is expressed in the change of social order for educational services under the impact of market conditions.

Medicine-by-wire: Practical considerations on formal techniques for dependable medical systems

• Application of formal methods to commercial medical devices in the UK. • Empirical socio-technical experiment on effective application of formal techniques. • Need for safety-critical mentality and safe automation in medicine. We see the future of medicine as highly automated. Improvement in care-provision will be achieved by both increased clinician efficiency, as well as new computing assisted treatments and diagnoses. In other safety-critical industries, such as avionics and automotive, certification is dependability-driven. In contrast, medical certification is clinical-trial driven, which we argue will become increasingly problematic with increasing medical device and software complexity. By dependability, we mean the dictionary notion: reliable and trustworthy. Thus, failures are either avoided by design, or are accountable to a measured extent. This touches upon the verification (intent) versus validation (outcome) problem. Even though correctness does not imply safety, we do believe from our experiences that, the process of striving for correctness (verification) done right does shed light on safety; on whether the requirements/assumptions were addressed as intended (validation). Medical device trials can lead to adequate assurances of safety, as defined by the local regulatory burden. Nevertheless, the nature of such complex systems means that certain errors may not be detected by trials and so additional efforts to reduce errors is needed. Our intent is, at least for software, to explore the contrast between approaches: correctness-by-construction versus correct-by-trial. Additionally, these levels of safety and effectiveness of systems vary across regulatory domains in different countries. A key challenge is how to achieve a successful interaction between verification tasks using formal methods and system development tasks within engineering teams without prior knowledge of formal techniques. This paper describes a pragmatic process for the application of formal techniques, which is illustrated for three medical devices during pre-clinical development prior to certification. That means, the techniques are not only applied to realistic systems, but are also taken up by development teams themselves ( i.e. cannot be entirely formal expert driven). We demonstrate differences in applying formalisms at the start, midpoint and final development stages. In particular, we describe the underlying socio-technical challenges and how we developed mitigation methods for each exemplar case. This paper is not about a general technique for medical automation, as we do not believe this is practical/possible given the varied/dynamic nature of medical problems.

Design of Smart Travel Management System Based on Cloud Service

The design and implementation of the database is an important task in system development. Many information in the management of smart tourism needs to be saved and managed so that these data can be analyzed later. Therefore, in the process of designing the system, the original number of system requirements is analyzed, and the relationship between business entities is established. Combined with the relational database used by the system, E-R diagram drawing and data table implementation were performed.

Networking of Strategic Partnerships in Higher Education: Prerequisites and Readiness of Universities

The priority task of the modern education system development is the organization of a comprehensive partnership, which, among other things, implies the development of network interactions between the university and various economic entities. In this regard, the need to apply new forms of partnerships is actualized, in which openness and readiness of partners for equal, effective and multilateral interaction is in the first place. However, at present, not all economic entities are ready to implement such a form of partner relations. The article examines the tendency of networking in higher education and the level of their development from the perspective of openness. In this work, we tested the methodology for a university readiness evaluation to form and develop a strategic partnership based on the network approach using the example of leading universities of the Russian Federation.

Актуальность научного наследия М. С. Фишельсона для решения задач транспортного планирования

The paper considers the scientific heritage of M. S. Fishelson, who studied the regularities of the city settlement system in regard to the practical task of the city transportation system development. There has been carried out an analysis of the settlement theory developed by M. S. Fishelson, as well as a comparison study of the «settlement curve» proposed by the scientist with the graphs obtained during calculations using modern information software complexes for predicting transport demand and traffic flow distribution intensity. The relevance and applicability of this theory in modern conditions has been substantiated.

Multivariate estimation of production duration of steel wire batches on the basis of situational-regulatory models. Message 1

The article considers the tasks of system analysis and development of models required for the synthesis of a situational (multivariate) procedure for estimating the standard duration of manufacturing a batch of products within a multi-structural steel wire complex (object of study), including independently functioning units with continuous, semi-continuous and discrete technological processes (etching, drawing, annealing, copper plating), which are connected by a single material flow. The complex is distinguished by: a variety of technological routes, allowing to produce a wide range of products (steel wire), corresponding to different standards, steel grades, diameters, shapes and masses of finished products; multivariate specialization of drawing mills; flexible connections between departments; parallel, sequential and combined work of the main and auxiliary equipment; equipment by specialized vehicles (cranes, conveyors, transfer carts, electric vehicles). During the system analysis of the research object, the following issues were resolved: a number of technological routes in the branches of complex were identified and described, their characteristics were evaluated. Graphic models of production processes have been developed, displaying sequence and parallelism of operations, their decomposition into elements and microelements for each compartment. The determining factors were identified characterizing the organization of production processes for all departments. Regulatory models have been developed for the duration of operations based on the integration of various research methods. The solution of the above task is based on the clock approach and includes: building a factor model of the piece situational tact of the s -type drawing mill, “pickling bath-tap” subsystem, heat treatment furnace, and the copper plating line. Additionally, the concept of piece equivalent operation of equipment was introduced to bring to a comparable form with the strokes of coarse-drawing mills. To ensure the coordinated work of the coarse drawing department with other departments, an appropriate amount of pickling, thermal, fine drawing equipment and copper plating has been determined. Models of interconnected part-time steps of the work of previous and subsequent branches (in relation to the rough drawing department) are formed. The degree of work coordination was determined on the basis of comparison of the part-time work cycles of equipment and vehicles at the entrance and exit of each section. To do this, regulatory models of vehicle operation were pre-built. The results of the performed work allow us to proceed to the presentation of the algorithm itself for estimating production duration of batches of steel wire, which will be presented in the second message.

On investment and construction activity tasks in the context of Russian spatial development trends

Introduction. Russian spatial development strategy elaborated for the period up to 2025 set new targets for investment and construction sphere of the state. Importance of systematic approach to investment and construction activity (ICA) tasks is determined by the necessity of shifting the centers of regional economic development according to state global prospective advantage demands. Methods of analyzing condition and potential of activity in different regions and economic sectors as well as at diverse stages of project and reproduction cycles do not allow solving the integrated development problem of all investment and construction activity types depriving it of realization possibility of intraindustrial synergetic effects. It presumes elaboration of new methods of structural analysis, scientific and practical importance of which is connected with justification of investment and construction harmonization directions for the purpose of strategically necessary spatial maneuver. Materials and methods. Works of leading scientific schools in the field of construction development, methodological approaches to the justification of analytical instruments and alternative scientific ideas on increasing economic capacity of construction are analyzed. Basing on structuring method of problematic space of construction development, the authors elaborate a new format of structural intraindustrial analysis providing systematic integrity of construction as the basis of practical implementation of modern Russian development trends. Results. Fulfilled analysis revealed restraints in posing tasks of ICA integral development connected with the absence of scientifically justified approaches to structural analysis along with the necessity of comparative analysis criteria elaboration within both national economy sectors and types of activity as well as stages of project and reproductive cycles. Conclusions. Importance of proposals on widening the tasks and modifying the format of ICA structural analysis is determined by the necessity of moving towards integral effect of harmonious industry-specific development with the use of sectoral and typical advantages of construction as well as scientific justification of integral aims and tasks of sectoral management system development.

Інституціональний вимір утворення латиноамериканської регіональної медійної системи.

The article examines the political aspects of the formation of international specialized nongovernmental organizations in the field of mass media in the Latin American region. In particular, the example of the Inter American Press Association, the International Association of Broadcasting, and the Ibero-American Telecommunications Organization shows how the imbalance of global and regional information flows, the processes that determined the foreign policy of the countries of the region and the international relations of that time in general, as well as the situation with the assurance of freedom of speech and media activities have determined and determine now the key tasks of the Latin American regional media system development. In particular, it has been shown that one of the most important reasons for creating that associations was to counteract the restrictive policies of some countries in the region, and the willingness of governments to use the mass media to address domestic and foreign policy objectives. It was found that the initiators of the establishment of regional institutions in all cases were Latin American media organizations themselves, which suggests that the need for such associations was and remains urgent and that their creation was an attempt to answer the challenges to Latin American regional media system, and to join efforts to strengthen Latin America’s voice outside the region. The consultative status of these institutions at the United Nations Economic and Social Council points to their credibility and weight. The core of all associations is cultural unity based on the Spanish language, which allows to speak about these institutions as Ibero-American or even Hispano-American. Proactive reaction to the processes of convergence of mass media on the basis of the Internet platform indicates the dynamism of these associations and their willingness to transform in accordance with the realities of the development of mass communications and regional and global information space.

A Preliminary Study on Gender Differences in Studying Systems Analysis and Design

Systems analysis and design is a crucial task in system development and is included in a typical information systems programme as a core course. This paper presented a preliminary study on gender differences in studying a systems analysis and design course of an undergraduate programme. Results indicated that male students outperformed female students in general in this course. However, regarding the different study focuses of the course, female students performed better in information systems development methodologies and systems analysis, whereas male students worked better in systems design. Discussions have been raised to explain the findings and it was suggested longitudinal studies could be conducted for a more generalized conclusion.

Метод планирования развития системы административного управления телекоммуникационной сетью

Abstract. The development of corporate telecommunication networks is connected with provided services list extension and increasing requirements to its quality. The main trend of service development is a significant reducing of service provi-sion active time due to progress in the field of telecommunication technologies. Telecommunication network is developed by an administrative management system in accordance with changing telecommunications services requirements, application conditions and developing communication technologies. Significant quality and quantity changes of a managed object require administrative management system changes. The existing methods of analysis, synthesis and optimization, which are used in solving tasks of administrative management system development, include reengineering of managing and technological ad-ministrative processes. However, these methods are oriented to a wide class of problems and are not adapted to integral reen-gineering of communication services management processes. The article suggests a planning method to solve the substantia-tion problem of management system perspective modernization direction. The method is based on describing management system using eTOM methodology on a technological processes level. Depending on planned changes of a telecommunication network at the level of services, the requirements to the management system are offered to predict. Based on the requirements to administrative management systems capabilities, supporting telecommunication services list, the authors suggested a new approach to choosing perspective modernization directions (a set of processes). This problem can be solved using the algo-rithm of resource allocation optimization on reengineering processes. The result of this method application is a plan (pro-gram) of management system modernization. It determines a set of processes for reengineering, a required resource level and modernization activities.

Platform for Multiagent Application Development Incorporating Accurate Communications Modeling

Multiagent systems are widely recognized as a method of choice for realization of distributed time-critical applications for the smart grid. However, no general solutions have been proposed for the difficult task of system development and validation, ready for deployment, which would fully account for the underlying communication network performance. We propose a novel platform designed for this purpose, which integrates a standard multiagent development framework [Java Agent Development (JADE)] and an industry standard communications network simulator (OPNET modeler). It was realized through generic extensions of the JADE framework to provide discrete event scheduling capabilities, while the OPNET modeler was extended to provide a generic method of associating the network nodes with agents running in JADE. The adopted method adheres to the high-level architecture standard. Importantly, applications developed using this platform may be deployed on the target system without manual modifications. A distributed protection application is presented and the performance is analyzed with respect to candidate agent behaviors and communication scenarios, demonstrating that the feasibility of the application critically depends on the choices made during its design and implementation.

Organizing the Product Development Processes: Four Perspectives

As stated by Zeng (Zeng, 2011), design comes from an environment, serves the environment, and changes the environment. Understanding the environment of a product is recognized by the research community to have a crucial impact on quality and success of products, services and complex systems. In this context, the aim of the Journal of Integrated Design and Process Science (JIDPS) is to publish research findings covering transdisciplinary notions of design and process. The focus of the journal is aligned with three fundamental objectives which are; a) the understanding of design and process crossing boundaries of natural, human, and built environments, b) the principles, methods, and tools, and c) the applications of design and process science to engineering and social problems. The present transaction is covering well those three lines of research by providing researches associated with: 1The optimization of the scheduling and organization of the system development process, 2The integration of product service system tools into the product development process, 3The analysis of the consistency in the architecture of large scale systems, 4The risk management in new product and service process, The present issue is trying to understand and act on the environment in large of systems or services by understanding the processes associated with the design of those systems and services. The issue is also including research work about the principles, the methods and the tools. The first paper, titled “A Combined Design Structure Matrix (DSM) and Discrete Differential Evolution (DDE) Approach for Scheduling and Organizing System Development Tasks Modelled using SysML” by Nonsiri et al, aims to develop a method supported by Artificial Intelligence approaches for automatically optimizing scheduling and organization of system development tasks. The purpose of this work is to support the scheduling and organization of tasks that can become very complex in system engineering process. Significant savings in term of development time can be made by providing a method that is optimizing the amount of feedbacks and iterations to the minimal level simply required for the successful development of the system. In this article, the authors are proposing to combine a computational approach (Discrete Differential Evolution) with Model Based Systems Engineering (MBSE) for minimizing iterations and reducing lead-time development. The present article is contributing to recent research works using Design Structure Matrixes (DSM) and computational methods for visualizing and analysing systems engineering processes. The practical use of the proposed framework is demonstrated on the case study of a mobile robot developed for the Eurobot competition. The article also

A Combined Design Structure Matrix (DSM) and Discrete Differential Evolution (DDE) Approach for Scheduling and Organizing System Development Tasks Modelled using SysML

During a system engineering process there are an important number of tasks that need to be organized, mapped together and recursively considered. The tasks that are mapped together are exchanging different flows of information and material. In this type of iterative processes, significant savings in term of development time can be made by providing a method that is optimizing the amount of feedbacks and iterations to the minimal level simply required for the successful development of the system. Task scheduling in a system engineering process can become extremely complex. Nevertheless it is a crucial step of the early stages of the systems engineering process for time-to-market, cost-efficiency and quality reasons. In this article, the authors are proposing to combine a computational approach (Discrete Differential Evolution) with Model Based Systems Engineering (MBSE) for minimizing iterations and reducing lead-time development. The present article is contributing to recent research works using Design Structure Matrixes (DSM) and computational methods for visualizing and analyzing systems engineering processes. The paper is proposing a framework integrating a model-based approach and a DSM based analysis of the process architecture to assist system engineers in organizing and scheduling tasks. As a result, this framework allows engineers to automatically populate DSMs generated from MBSE models developed in SysML. A specific stereotype is proposed to represent system development tasks in SysML. The sequencing of the engineering tasks is optimized with the application of a Discrete Differential Evolution algorithm (DDE) taking into account the different constraints. The practical use of the proposed framework is demonstrated on the case study of a mobile robot developed for the Eurobot competition. The article also discusses the possibility to use the current framework to analyze the impact of requirement changes on the scheduling of development tasks.

Topsy-turvy requirements

A cyber-physical system comprises an assemblage of given material and human domains together with the computing element or elements introduced to control them. Requirements for such systems can be understood as properties of system behaviours: the central task of system development is to design the overall behaviour of the system to satisfy these requirements. This overall behaviour can be regarded as a structure of simplified independent behaviours, modified and recombined to address their interactions. A widely adopted approach to requirements perversely conceals this structure.

Applied Systems Engineering: Fundamentals for Project Success

AbstractSystems engineering methods are critical to project success. The world of systems engineering is changing rapidly. Rather than confining our practice to the realm of large stand‐alone, single purpose military/aerospace systems, we must now develop military and commercial systems across a wide range of size, cost, and complexity. Many principles remain constant, but the systems engineering processes of yesterday are no longer universally applicable. At its heart systems engineering is a disciplined application of creative thought to the practical problems facing the engineer. The way in which you think about the problem and the possible systems solutions controls the outcome of your design effort. This tutorial will bring into focus the issues and considerations surrounding the choice of methods and approach. We will consider the classic systems engineering domains of requirements, behavior, architecture, and V&V. But instead of treating these in isolation, we will handle these fundamentals within a flexible systems engineering process suitable for system development tasks spanning the complexity spectrum. Our emphasis will be on eliciting the proper requirements, understanding both the problem and solution domains, enhancing communication among the design team and the stakeholders, and satisfying the system need. Throughout the tutorial we will address methods for banishing rework, minimizing risk, and meeting cost and schedule targets‐ all the while maintaining a high level of confidence in our solution. Through discussions of the fundamental concepts integrated with sample exercises, we will maintain our focus upon the true deliverables ‐ the system itself and overall project success.

Model‐Based Systems Engineering For Project Success: The Complete Process

AbstractThis basic tutorial identifies the elements and benefits of a complete, proven model‐based system engineering process, and demonstrates its tailorability and value for project success using vignettes from an information management system and a sample System of Systems (SoS) application. The tutorial illustrates how the model‐based system engineering process supports both document‐driven and model‐based paradigms, whether in top‐down, middle‐out, or reverse engineering environments. It discusses how to know when each element of the process has been completed, and how to develop and validate functional and physical architectures using executable architectures. The requirement for concurrent engineering, the onion model, and synchronization of models and data are presented.The participants will be introduced to a flexible system engineering process suitable for system development tasks across the complexity spectrum. In addition to the process description, the tutorial will include a sample solution to illustrate the recommended techniques, views, completion conditions, and products of an MBSE system development methodology. It will also include examples of the development of graphical views commonly used by practitioners of DoDAF and SysML approaches.This tutorial is focused on highlighting how the use of model‐based systems engineering can meet the government requirements for delivering architecture framework products while allowing the engineering organizations (industry and government) to successfully perform the systems engineering required to develop an executable design.

Got software? What managers and engineers need to know

As part of a JPL-wide software quality initiative aimed at addressing the challenges of developing, managing, and acquiring software, a team at JPL generated a detailed Software Training Plan for both managers and engineers. The team took the approach of treating the software training program as though it were a system development task and went through all the typical phases of system development including requirements, design, and implementation. During the requirements collection phase, the team conducted dozens of interviews and identified the specific skills needed. The skills fell into categories such as software management, software engineering, systems engineering, and other technical areas. However, an equally important finding was that several soft skills were deemed critical for the successful and timely management and implementation of software-intensive systems. This discusses JPL's approach and lessons learned from planning and delivering a software training program in an engineering and scientific environment.