Development Of System Technology Research Articles

Improve traffic efficiency with advanced travel time feedback in urban networks

With the development of modern intelligent traffic system technology, the travel time information can be collected and processed to provide route-choice suggestions to travellers. However, due to the complex nature of a traffic system, the feedback of traffic information might lead to undesired congestion in some concerned areas (such as the central business district). In this paper, an improved time shortest path strategy (ITSP) based on advanced travel time information feedback is proposed and applied in a Manhattan-like urban traffic system. With the strategy, the link travel time in the concerned area is adjusted by a travel-cost-related coefficient before being sent to final users. We study the effects of ITSP on traffic performance based on cellular automaton model of urban traffic. What we found most interesting is that when providing the traffic time information with an slightly larger than 1.0 (typically ), the performance of the system will be enhanced as compared to the situations of no information feedback or providing the real travel time information. Simulation results show that, ITSP can increase the average arrival rate and the traffic flow in scenario of fixed total number of vehicles. Vehicle density decreases with ITSP strategy under scenario with varying total number of vehicles, which helps to avoid traffic gridlock and improve the system reliability. Furthermore, the effects of different size of core areas and different origin-destination patterns are also explored. All the results show that ITSP can improve the traffic performance of network systems.

Development of reactor relevant pellet launching system technology on ASDEX Upgrade

Controlling the plasma density in a future fusion reactor will be mainly attributed to pellet injection using a control algorithm based on a rather difficult density measurement. The underlying technology to capacitate the Pellet Launching System (PLS) for the requirements is challenging. The ASDEX Upgrade (AUG) PLS was retrofitted for this task, intensifying the integration into the Discharge Control System (DCS). Lessons learnt and their consequences for the design of a new system “from scratch” will be described.The technology of the ice production process is discussed as well as the observed performance in view of isotope ratio accuracy and plasma fuelling performance, mimicking the reactor fuel (mixture D/T) by using a mixture of H/D. Since a fusion power plant will require a steady-state pellet source, the development of a control strategy in view of process control is mandatory. The procurement of a new pellet source was launched in order to enhance the existing centrifuge acceleration system. This contribution will show first considerations.An innovative conceptual design will be presented comprising the potential to replace nowadays centrifuge systems. Present-day vacuum rotating feedthrough technology enables the installation of the motor for the accelerating arm on the atmosphere side avoiding a series of technical difficulties.The existing PLS on AUG is in operation now for almost 30 years. A conceptual design for a new PLS consisting of extruder, launcher and control systems (also for density control) with focus on reactor relevant technologies except tritium compatibility is under preparation.Results presented here are complementary domestic activities to the EUROfusion WP TFV.

Implementation Analysis of a Washout Filter on a Robotic Flight Simulator - a Case Study

This paper presents a detailed analysis about the implementation of a washout filter on the SIVOR (Simulador de Voo Robotico – Robotic Flight Simulator) project. The main objective of this project is to develop, on an anthropomorphic robot, a flight simulator which can be used as an Engineering Development System (EDS) and a pilot training platform, capable of providing feelings the pilot would only have in more intensive maneuvers, such as losses/gains of G in aircraft flight tests. The SIVOR project also has the objective of providing a cost-efficient and flexible tool that can be used during the design phases of aircrafts. One of the demanded features of such simulator is a representative behavior of its motion system, which is achieved by an adequate implementation of the washout filter. To the best knowledge of the authors, there are no works in the literature that present a detailed discussion about the implementation of a classical washout filter in such flight simulator, especially when the translational channel is used to its limits. Experimental results to support the proposed solutions are presented herein.

Innovation Policy Developmet Conceptual Framework for National Resource Security Providing

The article deals with the problem of resource security and its providing through the innovation and technological systems development. Also authors have considered international aspect of resource security and its technological providing based on resource & innovation linkages and global value chains (GVCs) factor. In study authors have proposed to consider «resource nationalism» concept as a system of government's efforts, based on national and international factors, to gain greater benefits from available natural resources using innovation development strategy without any detriment to private companies. Resource management were considered within the necessity to follow long-term strategy of resource use, including the context of goals set achieving for several decades or even centuries to come. On example of United States authors have considered resource security policy, which combines international trade and innovation instruments. Authors have considered the basics of systemic strategy of resource security ensuring in globalization context within the national economic security. By analogy with main definitions of any national economic security components authors have distinguished three basic economic components of resource security management system (purposeful economic process, economic actors, environment). The authors have developed the innovation and technological resource security support, based on resource management and technology request processes. Based on dematerialization management aspects and risk types innovation and technological development priorities within the national resource security were proposed.

A Regression-Based Collaborative Filtering Recommendation Approach to Time-Stepping Multi-Solver Co-Simulation

The ever-increasing application of modeling and simulation to the development of complex engineering systems has made co-simulation indispensable to the handling of coupled multi-domain models. The mechanism for controlling communication between multiple solvers holds the key to co-simulation performance and is regarded as one of the most challenging parts in co-simulation as a lot of tradeoffs need to be made in terms of stability, accuracy, and efficiency. As such, a holistic and dynamic approach is required, which has not been addressed by this paper that has a focus on either tailored problem with a specific numerical analysis scheme or software platforms for implementing data exchange. This paper precisely aims to address this gap by developing a knowledge-based approach to streamlining the co-simulation process. Specifically, a regression-based collaborative filtering approach is developed to recommend suitable ordinary differential equation solvers for individual simulators according to the specific engineering characteristics and historical simulation data. On this basis, the theoretical analysis of the stability region and truncation error is conducted to provide guidance on controlling time stepping of individual simulators using a Jacobi communication scheme. This approach has been evaluated in several computational experiments, in which the advantages of the proposed approach are demonstrated. First, the recommendation algorithm is reliable in making suggestions on viable solvers during simulation run time, especially when only sparse historical datasets are available. Second, the time-stepping scheme noticeably improves the computational efficacy owing to it having no dependence on the initial step-size choice, which is a more eminent advantage for high-fidelity co-simulation problems.

Reinforcement Learning of Driver Receiving Traffic Signal Information for Passing through Signalized Intersection at Arterial Road

Abstract Real-time traffic signal information has recently become available thanks to further developments in Intelligent Transportation System (ITS) technology. Drivers may change their driving behavior by receiving information on the status of upcoming traffic signals. The behavior of a driver who reacts to such information with the purpose of smoothly passing through an upcoming signalized intersection is described as reinforcement learning in this study. The influence of reactive drivers on traffic flows is analyzed by a multi-agent traffic flow simulation on an arterial road composed of four signalized intersections. Furthermore, the relationship between the ratio of reactive drivers and traffic flows is clarified, under the assumption that there is a mixture of reactive and nonreactive drivers on the road. The results of the multi-agent traffic flow simulation showed that the average stop time decreased as the ratio of reactive drivers increased. Moreover, the threshold of the ratio of reactive drivers to begin to influence largely vehicle stop situations was around 50%. The average travel time was almost constant regardless of the ratio of reactive drivers. It was also demonstrated that reacting to the traffic signal information and decelerating accordingly did not cause time delays. This suggests that the provision of the traffic signal information and appropriate reaction to the provided information may help reduce the amount of CO2 emissions from a vehicle approaching a signalized intersection and probably contribute to alleviating progress of global warming.

An authenticated hierarchical asymmetric group key agreement protocol based on identity

Asymmetric group key agreement protocol is to negotiate a shared group encryption key. Each member can calculate a decryption key corresponding to the encryption key. With the rapid development of network and system technology, secure information exchange has been one of the foci. In this paper, we propose an authenticated hierarchical asymmetric group key agreement protocol based on identity. Based on the realisation of a round of asymmetric group key agreement, the protocol carries out a second round of agreement. Different levels of secrets exchange information between a group of players with different permissions as the number of rounds increases, which can achieve anonymity and authentication and support dynamic group key updating of nodes to achieve forward and backward security of group key. The protocol proved to be secure under the assumption of bilinear computational Diffie-Hellman problem. The performance analysis shows that the proposed scheme is efficient.

An authenticated hierarchical asymmetric group key agreement protocol based on identity

Asymmetric group key agreement protocol is to negotiate a shared group encryption key. Each member can calculate a decryption key corresponding to the encryption key. With the rapid development of network and system technology, secure information exchange has been one of the foci. In this paper, we propose an authenticated hierarchical asymmetric group key agreement protocol based on identity. Based on the realisation of a round of asymmetric group key agreement, the protocol carries out a second round of agreement. Different levels of secrets exchange information between a group of players with different permissions as the number of rounds increases, which can achieve anonymity and authentication and support dynamic group key updating of nodes to achieve forward and backward security of group key. The protocol proved to be secure under the assumption of bilinear computational Diffie-Hellman problem. The performance analysis shows that the proposed scheme is efficient.

All-optical modulation format conversion from PSK to ASK based on phase-sensitive amplification

With the development of the optics communication system and optical signal modulation technology, the amplitude-shift keying (ASK) and phase-shift keying (PSK) are both used in different optical communication sub-networks. In this paper, a novel all-optical modulation format from PSK to ASK based on phase-sensitive amplification is proposed and demonstrated. Using the nonlinear interference of the single-pump phase-sensitive amplification, the signal wavelength can be preserved while the modulation format is conversed. The proposed scheme provides the flexible intermediate node interface transformation in future optical networks.

БАЗОВОЕ ОБЕСПЕЧЕНИЕ ВЫБОРА СТРАТЕГИЙ РАЗВИТИЯ ТЕХНОЛОГИЧЕСКИХ СИСТЕМ ЦЕМЕНТНЫХ ПРОИЗВОДСТВ

БАЗОВОЕ ОБЕСПЕЧЕНИЕ ВЫБОРА СТРАТЕГИЙ РАЗВИТИЯ ТЕХНОЛОГИЧЕСКИХ СИСТЕМ ЦЕМЕНТНЫХ ПРОИЗВОДСТВ

Development of a Web System-based Geographic Information System Technologies to Mapping Electromagnetic Fields: First Developments

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Understanding forced adoption of self-service technology: the impacts of users’ psychological reactance

ABSTRACTWith the rapid development of artificial intelligence, information system, and mobile technologies, some companies (e.g. airlines) consider fully replacing service employees with self-service technologies (SSTs) to cut down costs and to increase efficiency. However, replacing full services with SSTs sometimes fail to deliver the benefits companies have hoped for: users may feel that they are being forced to use SSTs and show resistance to the new technologies. To investigate why users show resistance, we draw inferences from psychological reactance theory and argue that users may perceive the forced adoption as a threat, which leads to resistance of SSTs. A conceptual model was developed and an empirical study was conducted. The results show that, under a forced situation, users are likely to perceive the forced adoption as a threat to their freedom, causing them to have negative emotions and perceptions towards the SSTs, and, in turn, their adoption intention decreases and switch intention increases. The findings provide insights on why users show resistance to SSTs and highlight the impacts of the motivational state of psychological reactance.

Urban road network expansion: A case study on Mysore city

Developing countries such as India are experiencing rapid urban expansion and land-use change. The road is one of the most significant roles in connection with one place to another place. Moving from one place to another has become the main concern in today’s context Considerate the urban road network expansion pattern and its consistent social and environmental effects is a sensible way to enhance complete urban planning and keep the city maintainable. The creation of roads is exclusive to the extremely extensive forms of natural landscape disparity. This paper mainly emphasizes the road network development in Mysore city. to analyze the development of road network length Geographic Information System (GIS) technology used for plotting the maps. Toposheet have been used for road network maps of 1972-73, 2005-06, and 2016. And also, calculation of the increased road lengths.The land transformation causes the road network length was increased by 1719 kilometers between 1972- 73 to 2016. Keywords: Road development; network; Mysore city; Geographic Information System

RANCANG BANGUN APLIKASI CLUSTERING DATA MINING MENGGUNAKAN METODE K-MEANS DAN K-MODES

Strategies and policies in a profit-oriented organization also have a social mission (public service) that prioritizes the service to the customer. The development of information system and information technology will impact on a competitive competition. This development also applies in the world of certification that requires the manager to build and develop information system to help the business activities, to achieve organizational goals and services for stakeholders, especially those which related to data, information, technology and application. We found some cases of information system management failure in achieving organizational objectives because the utilization is not in accordance with the direction and objectives of the organization. The system will analyze the relationship pattern of goods towards the goods order based on needs and usage. Furthermore, the patterns will be recognized so that we can obtain the composition set of criteria to order the goods. To find the patterns and information from a collection of reservation data into a decision-making material. Therefore, the writers make a study with the title "Implementation of K-Means and K-Modes Methods in Clustering Data Mining in Determining the Textile Material Ordering Set" (Case Study: UD. HO KIKU)

Patent Trend and Characteristics of Major Companies in the Field of Seismic Nodal System

This study analyzed patent trends of seismic nodal systems and the technical characteristics of core patents of three major companies, including Fairfield, Sercel, and Wireless Seismic, to examine the focus of technology development of each company. From the analysis, the patent application growth rate of seismic nodal systems has steadily increased since early to mid-2000s and has recently shown a higher growth rate. Over the same period, the patent application growth rate of the three major companies examined was higher than that of the global trend, and patent infringement cases was also examined to evaluate market competition in this field. Analysis of the technical characteristics of the three companies’ 33 core patents showed that they are generally focused on seismic signal detection. Sub-technologies included improved reliability of data acquisition, data transmission efficiency, and overall operating of the seismic nodal system. New entrants in field of technology development or manufacturing of seismic nodal systems where the market is growing must closely analyze the contents of major companies’ products and patents to prevent possible patent disputes or duplicate research.

Implementation of Model-driven Complex System Engineering Development System

This paper summarizes the related technologies of model-driven complex system engineering development system and establishes a framework for the development system. Then, expounds the implementation process of the development system in detail and emphasizes the key path points of how to achieve the model-driven system research and development capability. Finally, the author puts forward two suggestions for the application and promotion of the development system.

Managing development projects—The partnership between project managers and systems engineers

AbstractThere are two significant “players” in development projects: the project manager and the systems engineer, both working together in cooperation with the aim of carrying out technical (execution/performance, quality) and managerial (schedule, costs, and customer satisfaction) project goals. The goal of the current study is to identify the management processes shared by project managers and systems engineers in the defense industry, understand which factors influence how joint project management is accomplished and how it impacts meeting project goals, and provide recommendations for joint project management that will lead to project success. The research method was qualitative, based on 16 semistructured interviews with project managers and systems engineers in defense companies that deal with the development of technological systems. The main recommendations for joint project management are: clear distribution of responsibility and delegation of authority between the two professionals before starting the project; choosing a project manager who was once a systems engineer or who possesses engineering knowledge; insistence on an ongoing dialog between the two professionals and solving/preventing conflicts through discussion and persuasion; as well as expanding common ground between the project manager and systems engineers’ areas of responsibility.

Pengembangan Mobile Learning Berbasis Android (Studi Kasus pada Mata KuliahAnalisisPerancanganSistem)

Indonesian society more 'technological literacy' at the moment, along with a high need for information and supported by sophisticated IT devices like PCs, gadgets or smartphones. IT devices not only use by business environment but also at education. People who really need the information today would make the smartphone cannot be separated from day life. This makes students want a mobile device can be present in a class. In education environment it is known as mobile learning.It can also be a solution to the limitation of resources in education in order to access learning materials anywhere, anytime.Design Instructional is used to build applications, including construction and structure of teaching materials in a ‘mind map’ that will be given to students. Content provided in m-learning include the material in the form of text, images and simulation quiz. The application of mobile learning in the Android smartphone application form can be mobile learning systems integrated. Applications are made in an environment of learning Android using the Eclipse IDE for Jav.,Simulations quiz can also be applied to mobile applications in order to improve the understanding and the quality of learning. Selected engineering system development is the Waterfall model. Object-oriented design using UML modeling tools (Unified Modeling Language). The creation of mobile learning applications based on Android subjects Design Analysis Systems .At last, the creation of mobile learning applications based on Android subjects Design Analysis System can be m-learning resources based on Android system design analysis courses on informatics engineering education courses. It also can support class learning by using applications. Keywords: android, app, education,eclipse, information, interactive, java, mobile learning, platforms, resources, smartphones, technology, text.

ФИЛЬТРАЦИЯ СИГНАЛОВ НА БАЗЕ КУМУЛЯНТОВ

The subject of study is the integration of linear and nonlinear methods for the solution of image restoration applications. The aim is the development of signal filtering algorithm and image model building. The tasks are to develop a criterion for impulse form signals; to develop an effective solving algorithm. The applied methods are optimal filtering method, mathematical models of optimization, the method of independent component analysis. The results are the following: the problem of choosing the optimal structure of the algorithm is formulated, complexing of linear and nonlinear methods for solving the inverse problem is considered, the criterion of optimization for signals of the impulse form, the optimization criterion for pulse signals is selected. The criterion is applied to select the filter kernel. The results of control restorations for distorted images are presented. The recovery error is estimated as a function of the signal-to-noise ratio. Conclusions. The following new results are obtained: the method of optimal filtering based on a cumulant of the second order for pulsed signals has been improved by introducing an appropriate criterion. The obtained estimate is used to form a linear model of observation. The solution of the obtained system of linear equations (SLE) is found in the framework of the analysis of independent components (ICA), based on the fourth-order cumulant. A model of the distorted image is constructed and the results of the reconstruction are given. It is shown that for impulse waveforms, it is possible to apply the stopping criterion of the iterative process on the basis of higher-order derivatives. The quality of filtration in the norm of L2 is estimated depending on the signal-to-noise ratio. The simulation results show that the recovery error decreases at ratios more than 10. The results of the studies performed in this paper can be used in the development and modernization of various radio engineering systems of aircraft

Transcatheter aortic valve implantation: status update.

Transcatheter aortic valve implantation (TAVI) has emerged as the gold standard technique for all patients with symptomatic severe aortic stenosis at elevated surgical risk. Much progress has been made to reduce procedural complications and improve patient outcomes. The impressive results of contemporary TAVI can be attributed to a variety of factors, including improving operator experience, pre-operative patient screening, and developments in transcatheter heart valve and delivery system technology. Despite these advances, serious procedural complications continue to occur and there remain some anatomical subsets and patient groups to whom TAVI technology has not been expanded. Herein we discuss these unmet needs in TAVI.