Performance Evaluation最新文献_第6页

Modeling and performance analysis of hybrid systems by queues with setup time 具有建立时间的队列混合系统建模与性能分析

IF 2.2 4区计算机科学

Performance Evaluation Pub Date : 2023-09-04 DOI: 10.1016/j.peva.2023.102366

Mitsuki Sato , Kohei Kawamura , Ken’ichi Kawanishi , Tuan Phung-Duc

引用次数: 0

A loss queueing game for electric vehicle charging performance evaluation 一种用于电动汽车充电性能评价的损失排队博弈

IF 2.2 4区计算机科学

Performance Evaluation Pub Date : 2023-09-01 DOI: 10.1016/j.peva.2023.102350

Alix Dupont , Yezekael Hayel , Tania Jiménez , Olivier Beaude , Jean-Baptiste Breal

{"title":"A loss queueing game for electric vehicle charging performance evaluation","authors":"Alix Dupont , Yezekael Hayel , Tania Jiménez , Olivier Beaude , Jean-Baptiste Breal","doi":"10.1016/j.peva.2023.102350","DOIUrl":"https://doi.org/10.1016/j.peva.2023.102350","url":null,"abstract":"<div><p><span>The demand of electricity at the Charging Stations (CSs) by Electric Vehicle (EV) users is tremendously increasing. However, EV users still face limited resources at the CSs, both in terms of the number of parking spaces equipped with a charging point, and in terms of available power. This paper deals with the choice of a CS among two CSs by the EV users in a competitive environment. The stochastic nature of arrivals and departures at the CSs is modeled by a queueing system. A queueing game is studied where the EV users are the players and choose the CS that gives the highest expected energy received. An </span>approximation of the expected energy received at the CSs is theoretically provided and the quality of this approximation is numerically illustrated and analyzed through simulations. The existence and uniqueness of the equilibrium of the game is proved, and bounds on the Price of Anarchy (PoA) are also provided. Moreover, the model is simulated using a discrete event framework and a sensitivity analysis of the main metrics of the system with respect to the average parking duration and the power sizing coefficient is provided. The results show that the utility of EV users at equilibrium is close to the optimal utility. This study can help a Charging Point Operator (CPO) to design incentives for EV users in order for instance to limit the parking duration so as to improve the social welfare of the EV users.</p></div>","PeriodicalId":19964,"journal":{"name":"Performance Evaluation","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49700929","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Optimizing recommendations under abandonment risks: Models and algorithms 放弃风险下的推荐优化:模型与算法

IF 2.2 4区计算机科学

Performance Evaluation Pub Date : 2023-09-01 DOI: 10.1016/j.peva.2023.102351

Xuchuang Wang , Hong Xie , Pinghui Wang , John C.S. Lui

引用次数: 0

CLC: A cross-level program characterization method CLC:一种跨层次的程序表征方法

IF 2.2 4区计算机科学

Performance Evaluation Pub Date : 2023-09-01 DOI: 10.1016/j.peva.2023.102354

Li Tang, Scott Pakin

引用次数: 0

Secrecy performance analysis of UAV-based full-duplex two-way relay NOMA system 基于无人机的全双工双向中继NOMA系统保密性能分析

IF 2.2 4区计算机科学

Performance Evaluation Pub Date : 2023-09-01 DOI: 10.1016/j.peva.2023.102352

Thanh Trung Nguyen , Van Toan Hoang , Manh Hoang Tran , T. Thanh Huyen Le , Xuan Nam Tran

{"title":"Secrecy performance analysis of UAV-based full-duplex two-way relay NOMA system","authors":"Thanh Trung Nguyen , Van Toan Hoang , Manh Hoang Tran , T. Thanh Huyen Le , Xuan Nam Tran","doi":"10.1016/j.peva.2023.102352","DOIUrl":"https://doi.org/10.1016/j.peva.2023.102352","url":null,"abstract":"<div><p><span><span>In this paper, we investigate the secrecy performance of an unmanned aerial vehicle (UAV)-based full-duplex (FD) two-way relay non-orthogonal multiple access (TWR-NOMA) system with two terrestrial users and an eavesdropper. To ensure secure communications, a UAV acts as an aerial relay station, which not only forwards confidential information to legitimate users but also keeps emitting the jamming signal to degrade the performance of any potential eavesdropper. The ergodic secrecy rate (ESR) and secrecy outage </span>probability (SOP) of users and the system are successfully investigated under the assumption of imperfect successive interference and self-interference cancellation. In addition, to provide a better understanding of the secrecy performance, mathematical expressions of asymptotic ESR, secrecy slope, asymptotic SOP, and secrecy </span>diversity order<span> are also studied. Simulation results demonstrate that the FD TWR-NOMA system attains better secrecy performance than that of the FD TWR-NOMA system with a terrestrial relay, the FD TWR-NOMA system without jamming signal, as well as the half-duplex TWR-NOMA system. The secrecy performance of the system is significantly enhanced when UAVs approach the remote user. Furthermore, there is a reasonable power allocation value for jamming and legitimate signals on the UAV to improve secrecy performance.</span></p></div>","PeriodicalId":19964,"journal":{"name":"Performance Evaluation","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49756691","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Resource allocation for URLLC and eMBB traffic in uplink wireless networks 无线上行网络中URLLC和eMBB业务的资源分配

IF 2.2 4区计算机科学

Performance Evaluation Pub Date : 2023-09-01 DOI: 10.1016/j.peva.2023.102353

Duan-Shin Lee , Cheng-Shang Chang , Ruhui Zhang , Mao-Pin Lee

{"title":"Resource allocation for URLLC and eMBB traffic in uplink wireless networks","authors":"Duan-Shin Lee , Cheng-Shang Chang , Ruhui Zhang , Mao-Pin Lee","doi":"10.1016/j.peva.2023.102353","DOIUrl":"https://doi.org/10.1016/j.peva.2023.102353","url":null,"abstract":"<div><p><span><span>In this paper we consider two resource allocation problems of URLLC<span> traffic and eMBB traffic in uplink </span></span>5G networks. We propose to divide frequencies into a common region and a grant-based region. Frequencies in the grant-based region can only be used by eMBB traffic, while frequencies in the common region can be used by eMBB traffic as well as URLLC traffic. In the first resource allocation problem we propose a two-player game to address the size of the grant-based region and the size of the common region. We show that this game has specific pure </span>Nash equilibria<span><span>. In the second resource allocation problem we determine the number of bits that each eMBB user can transmit in a request-grant cycle. We propose a constrained optimization problem to minimize the variance of the number of bits granted to the eMBB users. We show that a water-filling algorithm solves this constrained optimization problem. From simulation, we show that our scheme, consisting of resource allocation according to Nash equilibria of a game, persistent random transmission of URLLC packets and allocation of eMBB packets by a water-filling algorithm, works better than four other </span>heuristic methods.</span></p></div>","PeriodicalId":19964,"journal":{"name":"Performance Evaluation","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49701143","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Stability of a stochastic ring network 随机环网络的稳定性

IF 2.2 4区计算机科学

Performance Evaluation Pub Date : 2023-08-28 DOI: 10.1016/j.peva.2023.102355

Pieter Jacob Storm , Wouter Kager , Michel Mandjes , Sem Borst

引用次数: 1

Efficient and accurate Lyapunov function-based truncation technique for multi-dimensional Markov chains with applications to discriminatory processor sharing and priority queues 基于Lyapunov函数的多维马尔可夫链截断技术及其在判别处理器共享和优先级队列中的应用

IF 2.2 4区计算机科学

Performance Evaluation Pub Date : 2023-08-10 DOI: 10.1016/j.peva.2023.102356

Gagan Somashekar , Mohammad Delasay , Anshul Gandhi

{"title":"Efficient and accurate Lyapunov function-based truncation technique for multi-dimensional Markov chains with applications to discriminatory processor sharing and priority queues","authors":"Gagan Somashekar , Mohammad Delasay , Anshul Gandhi","doi":"10.1016/j.peva.2023.102356","DOIUrl":"https://doi.org/10.1016/j.peva.2023.102356","url":null,"abstract":"<div><p>Online service providers aim to satisfy the tail performance requirements of customers through Service-Level Objectives (SLOs). One approach to ensure tail performance requirements is to model the service as a Markov chain and obtain its steady-state probability distribution. However, obtaining the distribution can be challenging, if not impossible, for certain types of Markov chains, such as those with multi-dimensional or infinite state-space and state-dependent transitions. Examples include M/M/1 with Discriminatory Processor Sharing (DPS) and preemptive M/M/c with multiple priority classes and customer abandonment.</p><p>To address this fundamental problem, we propose a Lyapunov function-based state-space truncation technique that leverages moments or bounds on moments of the state variables. This technique allows us to obtain tight truncation bounds while ensuring arbitrary probability mass guarantees for the truncated chain. We highlight the efficacy of our technique for multi-dimensional DPS and M/M/c priority queue with abandonment, demonstrating a substantial reduction in state space (up to 74%) compared to existing approaches. Additionally, we present three practical use cases that highlight the applicability of our truncation technique by analyzing the performance of the DPS system.</p></div>","PeriodicalId":19964,"journal":{"name":"Performance Evaluation","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2023-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49874544","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Reflections on good practice in evaluating Violence Reduction Units: Experiences from across England and Wales 对评估减少暴力单位良好做法的思考:来自英格兰和威尔士各地的经验

IF 2.2 4区计算机科学

Performance Evaluation Pub Date : 2023-07-01 DOI: 10.1177/13563890231183993

L. Caulfield, Z. Quigg, Nicole M. Adams-Quackenbush, H. Timpson, Sophie Wilson

引用次数: 1

Giving critical theoretical and evaluation practice context to ‘Testing, Testing’ in Jamaica 为牙买加的“测试，测试”提供关键的理论和评估实践背景

IF 2.2 4区计算机科学

Performance Evaluation Pub Date : 2023-07-01 DOI: 10.1177/13563890231184274

D. Leslie, Keenan Falconer, Chantol Dormer, Thelma White

引用次数: 0