Journal of Engineering Research and Sciences最新文献_第8页

Analyzing the Impact of Challenges in Prefabricated Building Construction Supply Chains 装配式建筑施工供应链中挑战的影响分析

Journal of Engineering Research and Sciences Pub Date : 2022-05-01 DOI: 10.55708/js0105008

Rishabh Rastogi, S. Solanki, V. K. Paul

引用次数: 1

Hybrid Frameworks for the Multi-objective Optimization of Distributed Generation Units and Custom Power Devices with Simultaneous Distribution Network Reconfiguration 同时重构配电网的分布式发电机组和定制电力设备多目标优化混合框架

Journal of Engineering Research and Sciences Pub Date : 2022-05-01 DOI: 10.55708/js0105020

Pamela Ramsami, R. King

{"title":"Hybrid Frameworks for the Multi-objective Optimization of Distributed Generation Units and Custom Power Devices with Simultaneous Distribution Network Reconfiguration","authors":"Pamela Ramsami, R. King","doi":"10.55708/js0105020","DOIUrl":"https://doi.org/10.55708/js0105020","url":null,"abstract":"The increased penetration of renewable energy sources in the distribution system affects the stability and efficiency of the system. To account for the intermittent nature of these sources, distribution network reconfiguration and the integration of custom power devices are important. This paper aims to identify the optimum location of photovoltaic systems and unified power quality conditioners in the distribution system considering economic and technical aspects. Three metaheuristic algorithms namely nondominated sorting genetic algorithm-II (NSGA-II), strength pareto evolutionary algorithm-2 (SPEA2) and multi-objective evolutionary algorithm based on decomposition (MOEA/D) were employed. Furthermore, three hybrid algorithms were developed by dividing the population into two parts. Multi-objective particle swarm optimisation (MOPSO) was applied in the upper part while NSGA-II, SPEA2 or MOEA/D was used in the lower part of the population resulting in three hybrid algorithms: MOPSO-NSGA II, MOPSO-SPEA2, MOPSO-MOEA/D. The simulation was performed on the IEEE-123 Node Test Feeder system using the OpenDSS and MATLAB environment. The performance of the proposed algorithms was compared according to their computation time and performance metrics such as pure diversity, generational distance and spacing. It was found that the hybrid algorithms enhance the convergence of the solutions to the true Pareto front. Combining SPEA2 or MOEA/D with MOPSO also reduced the complexity of the algorithms resulting in a lower simulation time.","PeriodicalId":156864,"journal":{"name":"Journal of Engineering Research and Sciences","volume":"128 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127084293","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

An Algebraic Specification/Schema for JSON JSON的代数规范/模式

Journal of Engineering Research and Sciences Pub Date : 2022-05-01 DOI: 10.55708/js0105025

K. Barlas, P. Stefaneas

{"title":"An Algebraic Specification/Schema for JSON","authors":"K. Barlas, P. Stefaneas","doi":"10.55708/js0105025","DOIUrl":"https://doi.org/10.55708/js0105025","url":null,"abstract":"JavaScript Object Notation (JSON) is an open standard data format that is used widely across the internet as means of exchanging structured data due to its low overhead. While originally created in the early 2000s, it has only gained standard status in 2013 and then again in 2017 with a new version that focused more on security and interoperability. In this paper the authors present a different specification of the JSON standard that relies on algebraic formal methods and provides certain benefits over a regular natural language specification. This specification can also function as a schema that can attest a JSON data document’s compliance to its blueprint. The absorption of Formal Specification methods by the industry happens at a very slow pace, mostly because there is little incentive to tread into a fairly unknown territory. Notwithstanding this reluctance, the authors encourage the usage of Formal Specification techniques to the specifications of open standards; Formal specifications are more succinct, less ambivalent, consistent to the standard, reusable as they support module inheritance and can be executable. The process of designing new Standards can benefit from Formal Specifications as the resulting specification i) is more tangible; ii) allows a thorough and clear understanding of the standard and also iii) allows property checking and property verification.","PeriodicalId":156864,"journal":{"name":"Journal of Engineering Research and Sciences","volume":"219 ","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113992342","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A Deep Reinforcement Learning Approach to Eco-driving of Autonomous Vehicles Crossing a Signalized Intersection 自动驾驶车辆穿越信号交叉口的深度强化学习方法

Journal of Engineering Research and Sciences Pub Date : 2022-05-01 DOI: 10.55708/js0105003

Joshua Ogbebor, Xiangyu Meng, Xihai Zhang

{"title":"A Deep Reinforcement Learning Approach to Eco-driving of Autonomous Vehicles Crossing a Signalized Intersection","authors":"Joshua Ogbebor, Xiangyu Meng, Xihai Zhang","doi":"10.55708/js0105003","DOIUrl":"https://doi.org/10.55708/js0105003","url":null,"abstract":": This paper outlines a method for obtaining the optimal control policy for an autonomous vehicle approaching a traffic signal head. It is assumed that traffic signal phase and timing information can be made available to the autonomous vehicle as the vehicle approaches the traffic signal. Constraints on the vehicle’s speed and acceleration are considered and a microscopic fuel consumption model is considered. The objective is to minimize a weighted sum of the travel time and the fuel consumption. The problem is solved using the Deep Deterministic Policy Gradient algorithm under the reinforcement learning framework. First, the vehicle model, system constraints, and fuel consumption model are translated to the reinforcement learning framework, and the reward function is designed to guide the agent away from the system constraints and towards the optimum as defined by the objective function. The agent is then trained for different relative weights on the travel time and the fuel consumption, and the results are presented. Several considerations for deploying such reinforcement learning-based agents are also discussed.","PeriodicalId":156864,"journal":{"name":"Journal of Engineering Research and Sciences","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130353857","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Humankind and Ubiquitous Autonomous AI: A Symbiotic or Dystopian Interaction? A Socio-Philosophical Inquiry 人类和无处不在的自主人工智能:共生还是反乌托邦的互动?社会哲学探究

Journal of Engineering Research and Sciences Pub Date : 2022-05-01 DOI: 10.55708/js0105012

Michael A. Vidalis, A. Andreatos

{"title":"Humankind and Ubiquitous Autonomous AI: A Symbiotic or Dystopian Interaction? A Socio-Philosophical Inquiry","authors":"Michael A. Vidalis, A. Andreatos","doi":"10.55708/js0105012","DOIUrl":"https://doi.org/10.55708/js0105012","url":null,"abstract":": The technological revolution in Artiﬁcial Intelligence (AI) and Autonomous Robotics is expected to transform societies in ways we cannot even imagine. The way we live, interact, work, and ﬁght wars, will not be like anything witnessed before in human history. This qualitative research paper endeavors to examine the eﬀect of said technological advancements on multiple socio-philosophical planes, including societal structure and ethics. AI mismanagement which we are already beginning to witness, coupled with humankinds’ historical ethical infractions, serve as an awakening call for global action to safeguard humanity; AI ethics ought to be examined through the Social Principle and the Social Contract. A proactive, vigilant stance seems imperative, in order to safeguard misuse, as in the case of robot-soldiers or armed drones, which is a case of amensalism disguised. As technological progress is already interfering with humankind and conscience, and in light of expressed concerns from legal and civil liberties groups, it is imperative to immediately criminalize any research in AI weapons, transhumans and the crossbreeding of humans with machines, considering these as crimes against humanity.","PeriodicalId":156864,"journal":{"name":"Journal of Engineering Research and Sciences","volume":"106 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132476050","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Comparative Analysis of Scheduling Algorithms in 5G Uplink Transmission 5G上行传输调度算法对比分析

Journal of Engineering Research and Sciences Pub Date : 2022-05-01 DOI: 10.55708/js0105005

M. Mamode, T. P. Fowdur

{"title":"Comparative Analysis of Scheduling Algorithms in 5G Uplink Transmission","authors":"M. Mamode, T. P. Fowdur","doi":"10.55708/js0105005","DOIUrl":"https://doi.org/10.55708/js0105005","url":null,"abstract":": 5G is the successor to 4G technology and it has enabled a new level of user experience with much greater speeds and much lower latencies. Scheduling is the method of allocating resources for transmission of data. In this paper, three scheduling algorithms have been investigated, namely Proportional Fair, Round Robin and Best CQI. An uplink 5G system with one base station and four user equipment were used to evaluate the three algorithms by varying four sets of parameters. Simulation results showed that the Round Robin algorithm was the fairest of all three algorithms by displaying almost similar resource share percentage for the four user equipment. Proportional Fair algorithm was observed to yield a higher throughput than the Round Robin algorithm for a specific user in some cases. It offered a better trade-off between throughput and fairness. In the case where distance of user 1 from the base station was 100m, the system simulated with the proportional fair technique yielded a peak throughput 30% higher than the system simulated with Round Robin technique. On the other hand, the Best CQI algorithm displayed a peak throughput value about 35% higher than the proportional fair algorithm for the 100m distance case. The Best CQI algorithm was found to be the least fair of all three algorithms as it favored users with better channel conditions.","PeriodicalId":156864,"journal":{"name":"Journal of Engineering Research and Sciences","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130867959","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Offline Signature Verification based on Edge Histogram using Support Vector Machine 基于边缘直方图的支持向量机离线签名验证

Journal of Engineering Research and Sciences Pub Date : 2022-05-01 DOI: 10.55708/js0105017

Sunil Kumar Dyavaranahalli Sannappa, K. Kiran, Sudheesh Kannur Vasudeva Rao, Y. Jagadeesh

引用次数: 0

Competency Manifestation Clues within Interactions in Computer Mediated Communication 计算机中介沟通互动中的能力表现线索

Journal of Engineering Research and Sciences Pub Date : 2022-05-01 DOI: 10.55708/js0105018

Hocine Merzouki, N. Matta, Hassan Atifi, F. Rauscher

{"title":"Competency Manifestation Clues within Interactions in Computer Mediated Communication","authors":"Hocine Merzouki, N. Matta, Hassan Atifi, F. Rauscher","doi":"10.55708/js0105018","DOIUrl":"https://doi.org/10.55708/js0105018","url":null,"abstract":"The notion of competence is multidimensional and polysemic. Several definitions of this notion are present in the literature according to disciplines such as industry, sociology, management, psychology, etc. It often refers to the experience, knowledge, abilities, skills, behaviors, and attitudes that allow valuable action in a workplace. Beyond its intrinsic value for the individual, competence is considered in organizations as an intangible asset whose mere possession often provides very considerable competitive advantages. The manifestation of competence takes several forms and the methods of its evaluation differ, ranging from quantitative approaches to social recognition. The approach that we have developed is based on the hypothesis that interacting individuals emphasize the components of their functional competencies according to the activity they carry out and the context that surrounds it. We chose pragma-linguistic, which permits us a more in-depth analysis in comparison to statistical analysis based on text-mining or data-mining techniques that are insufficient for an accurate detection of competence. For that purpose, we have proposed an interaction analysis methodology based on natural language processing techniques to find language elements that highlight the clues of the manifestation of the competence in computer mediated communications. We have developed and implemented two algorithms for the detection and analysis of competence that we have applied to interactions from the \"Ubuntu\" corpus of the community of interest of the same name which deal with Ubuntu operating system issues. The results of the application of our approach are presented and discussed in this paper.","PeriodicalId":156864,"journal":{"name":"Journal of Engineering Research and Sciences","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133848017","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

PWM Controlled Bidirectional Converter having Load-Independent Voltage-Gain 具有负载无关电压增益的PWM控制双向变换器

Journal of Engineering Research and Sciences Pub Date : 2022-05-01 DOI: 10.55708/js0105004

M. Riaz, U. Saeed, S. Waseem, S. Riaz, Eman Manzoor Ahmed

{"title":"PWM Controlled Bidirectional Converter having Load-Independent Voltage-Gain","authors":"M. Riaz, U. Saeed, S. Waseem, S. Riaz, Eman Manzoor Ahmed","doi":"10.55708/js0105004","DOIUrl":"https://doi.org/10.55708/js0105004","url":null,"abstract":": The power balancing is the issue that creates when voltage fluctuations occur in the DC microgrid. In order to compensate for the DC bus voltages in the DC microgrid, the energy storage system is used. This system absorbs or releases the power to make the DC bus voltages is stable. In this research, a bidirectional series resonant (BSR) converter is proposed which operates at the fixed frequency for the energy storage system. A simple PWM control technique is used for the power flow regulation in the system. The gain voltage of the BSR converter depends only on the duty cycle of the applied voltage and does not change the direction and amplitude of the power flow. Theoretically, after the calculations, the gain voltage of the BSR converter changed from minimum (zero) to maximum (unlimited) which means the designed converter is a buck-boost converter as well. This property of the BSR converter will help the researcher to use a wide range of voltage applications. The operations mode i.e. forward and backward modes, and the direction of the power flow can be changed smoothly by Pulse Width Modulation control. Zero voltage switching for all the voltage ranges of the active switches is also achieved in this research.","PeriodicalId":156864,"journal":{"name":"Journal of Engineering Research and Sciences","volume":"98 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133069546","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

VSC-HVDC Robust LMI Optimization Approaches to Improve Small-Signal and Transient Stability of Highly Interconnected AC grids 提高高互联交流电网小信号暂态稳定性的VSC-HVDC鲁棒LMI优化方法

Journal of Engineering Research and Sciences Pub Date : 2022-05-01 DOI: 10.55708/js0105026

Y. Xing, El-Nobi A. Ibrahim, B. Marinescu, F. Xavier

{"title":"VSC-HVDC Robust LMI Optimization Approaches to Improve Small-Signal and Transient Stability of Highly Interconnected AC grids","authors":"Y. Xing, El-Nobi A. Ibrahim, B. Marinescu, F. Xavier","doi":"10.55708/js0105026","DOIUrl":"https://doi.org/10.55708/js0105026","url":null,"abstract":"In this paper, for the situation of HVDC inserted in meshed AC power grid, a model-matching robust H∞ static output error feedback controller (RSOFC) and model-matching dynamic decoupled output feedback controller (DDOFC) are proposed to improve the damping of inter-area oscillation modes and maintain robustness to face the effects of different operating points and unstable zeros. Sufficient conditions for robust stability are derived in the sense of Lyapunov asymptotic stability and presented in the form of linear matrix inequalities to obtain H∞ RSOFC and DDOFC gains based on the reference model. The efficiency and robustness of the proposed controllers are tested and compared to Linear-Quadratic-Gaussian (LQG) control, mixed sensitivity H∞, standard (IEEE) Power Oscillation Damping (POD) controllers on a realistic benchmark of 19 generators connected by a meshed AC grid. The main contributions of this paper are: (i) Compensate the negative effect of unstable zeros (non-minimum phase behavior) on the performances of the closed-loop; (ii) the robustness is improved in order to provide good responses in case of network variations (load evolution, line, and generator trips, etc.) and HVDC line parameters changes; (iii) improve the damping compared with standard controller structures (LQG, mixed sensitivity H∞ and standard POD controller).","PeriodicalId":156864,"journal":{"name":"Journal of Engineering Research and Sciences","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132600416","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0