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2018 4th International Conference on Optimization and Applications (ICOA)最新文献

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LPWANIEEE 802.11ah and LoRaWAN capacity simulation analysis comparison using NS-3 使用NS-3的lpwanieee802.11 ah和LoRaWAN容量仿真分析比较
2018 4th International Conference on Optimization and Applications (ICOA) Pub Date : 2018-04-01 DOI: 10.1109/ICOA.2018.8370592
Oukessou Yassine, Mohamed Baslam, M. Oukessou
{"title":"LPWANIEEE 802.11ah and LoRaWAN capacity simulation analysis comparison using NS-3","authors":"Oukessou Yassine, Mohamed Baslam, M. Oukessou","doi":"10.1109/ICOA.2018.8370592","DOIUrl":"https://doi.org/10.1109/ICOA.2018.8370592","url":null,"abstract":"Low Power Wide Area Networks are the fundamental keys of the internet of Things (IoT). These networks provide long-range coverage to end nodes, exploiting license-free frequency bands and the sub 1Ghz communications. In this paper we evaluate and analyze using NS-3 network simulator, the uplink throughput of the two promises networks IEEE 802.11ah and LoRaWAN all by implementing the maximum number of the end devices served by a single base station. Also in the second scenario where the nodes are depends on the distance from the base station. In the conclusion we brief and compare the obtained results, and we make actions to be taken in case of making applications or deployments using these networks.","PeriodicalId":433166,"journal":{"name":"2018 4th International Conference on Optimization and Applications (ICOA)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129963031","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: 7
Uncertainty analysis in tactical logistics chain planning: Sources and consequences 战术物流链规划中的不确定性分析:来源与后果
2018 4th International Conference on Optimization and Applications (ICOA) Pub Date : 2018-04-01 DOI: 10.1109/icoa.2018.8370569
S. Kassami, A. Zamma, S. Ben Souda
{"title":"Uncertainty analysis in tactical logistics chain planning: Sources and consequences","authors":"S. Kassami, A. Zamma, S. Ben Souda","doi":"10.1109/icoa.2018.8370569","DOIUrl":"https://doi.org/10.1109/icoa.2018.8370569","url":null,"abstract":"In an ever more volatile market, shaped by the multichannel and digitalization of exchanges, companies expect their supply chain to make a greater contribution to achieving their major objectives. A perception considers the supply chain as a key factor of competitiveness. However a rational planning of the parameters of the company and the global supply chain is imposed for the good control of the physical, financial and informational resources. To this end, our contribution represents a step ahead in this direction, where we aim to analyze and measure the sources of uncertainty and variability that characterize the three actors: supply, process and demand. In this article we approach our study with a logic diagram illustrating the logic of operation and the schematization of the causes in order to deduce the proposed new approach.","PeriodicalId":433166,"journal":{"name":"2018 4th International Conference on Optimization and Applications (ICOA)","volume":"97 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115913665","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 syntactic and semantic multi-agent based question answering system for collaborative e-learning 基于句法和语义的协同电子学习多智能体问答系统
2018 4th International Conference on Optimization and Applications (ICOA) Pub Date : 2018-04-01 DOI: 10.1109/ICOA.2018.8370588
Abderrazzak Samadi, E. Hanaa, Mohammed Qbadou, M. Youssfi, F. Akef
{"title":"A syntactic and semantic multi-agent based question answering system for collaborative e-learning","authors":"Abderrazzak Samadi, E. Hanaa, Mohammed Qbadou, M. Youssfi, F. Akef","doi":"10.1109/ICOA.2018.8370588","DOIUrl":"https://doi.org/10.1109/ICOA.2018.8370588","url":null,"abstract":"With the rapid progress in technology and the advancement in learning systems, e-Learning has proved to be one of the best means for learning in many sectors. In an e-Learning environment, and to help learners to benefit the maximum from their courses, tutors are faced with the arduous task of writing answers — containing detailed, useful information — to every query and question they receive daily from their students. The task can take up a considerable amount of the time they spend each day on teaching if the number of students is high and the tutors have a narrow timeframe in which to reply to them all. In this paper, we present a Question Answering System (QAS) that helps learners to find the best answers to their questions and helps tutors to answer questions asked by their students in an e-Learning environment. we present a syntactic and semantic multi-agent approach to question answering in e-learning platforms. We try to improve existing approaches by using multiple techniques in a multi-layer system where learners and tutors with the help of automatic agents collaborate to find the best answer to the submitted question.","PeriodicalId":433166,"journal":{"name":"2018 4th International Conference on Optimization and Applications (ICOA)","volume":"79 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121340837","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: 10
Effects of carriers charge mobility and work function on the performances of P3HT:PCBM based organic photovoltaic solar cell 载流子电荷迁移率和功函数对P3HT:PCBM基有机光伏太阳能电池性能的影响
2018 4th International Conference on Optimization and Applications (ICOA) Pub Date : 2018-04-01 DOI: 10.1109/ICOA.2018.8370536
M. Erray, M. Hanine, El-mahjoub Boufounas, A. El Amrani
{"title":"Effects of carriers charge mobility and work function on the performances of P3HT:PCBM based organic photovoltaic solar cell","authors":"M. Erray, M. Hanine, El-mahjoub Boufounas, A. El Amrani","doi":"10.1109/ICOA.2018.8370536","DOIUrl":"https://doi.org/10.1109/ICOA.2018.8370536","url":null,"abstract":"This paper reports a study on the effect of charge carriers mobility and anode work function on the performances of an organic photovoltaic cell based on polymer/fullerene P3HT: PCBM. Thus, numerical simulations have been investigated on ITO/PEDOT:PSS /P3HT: PCBM/LiF/Al structure with AMPS-1D (Analysis of Microelectronic and Photonic Structures the simulation one dimension) and GPVDM (General-Purpose Photovoltaic Device Model) softwares. The results show that the optimum efficiency is obtained for electron and hole motility values of 10<sup>−4</sup> cm<sup>2</sup>V<sup>−1</sup>s<sup>−1</sup> and 2.10<sup>−4</sup> cm<sup>2</sup>V s<sup>−</sup>, respectively. Moreover, we reported that the ohmic contact for both anode and cathode electrodes of the investigated device remains very important to get the maximum efficiency. In addition, in this present work, the complimentary between the both softwares AMPS and GPVDM is also well illustrated as an original modeling approach.","PeriodicalId":433166,"journal":{"name":"2018 4th International Conference on Optimization and Applications (ICOA)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116305018","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: 3
Enhanced electrical performance of the InP/InGaAs single heterojunction bipolar transistor in terms of the cutoff frequency 在截止频率方面提高了InP/InGaAs单异质结双极晶体管的电性能
2018 4th International Conference on Optimization and Applications (ICOA) Pub Date : 2018-04-01 DOI: 10.1109/icoa.2018.8370506
J. Ouchrif, A. Baghdad, A. Sahel, A. Badri, A. Ballouk
{"title":"Enhanced electrical performance of the InP/InGaAs single heterojunction bipolar transistor in terms of the cutoff frequency","authors":"J. Ouchrif, A. Baghdad, A. Sahel, A. Badri, A. Ballouk","doi":"10.1109/icoa.2018.8370506","DOIUrl":"https://doi.org/10.1109/icoa.2018.8370506","url":null,"abstract":"In Advanced communication technologies, Bipolar Heterojunction Transistors (HBTs) were increasingly used because of their excellent electrical characteristics. In this paper, we have designed an InP/InGaAs Single Heterojunction Bipolar Transistor SHBT using the simulator TCAD-Silvaco (Technology Computer Aided Design) according to its technological characteristics (Meshing, doping profile, semiconductor materials….). We have integrated in the simulation the physical models contained in the simulator to consider the physical mechanisms which happen within the electronic device. Afterwards, we have studied the effect of two technological parameters which are the base doping concentration and the base width on the electrical performance in terms of the cutoff frequency fT. We then determined the optimum parameters in order to define an optimized device SHBT adapted for high frequency applications.","PeriodicalId":433166,"journal":{"name":"2018 4th International Conference on Optimization and Applications (ICOA)","volume":"420 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116531210","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 comparative study of discretization method for HMM classifiers HMM分类器离散化方法的比较研究
2018 4th International Conference on Optimization and Applications (ICOA) Pub Date : 2018-04-01 DOI: 10.1109/icoa.2018.8370599
B. Benyacoub, Abdelhadi Sabry, Souad El Bernoussi, Abdelhak Zoglat
{"title":"A comparative study of discretization method for HMM classifiers","authors":"B. Benyacoub, Abdelhadi Sabry, Souad El Bernoussi, Abdelhak Zoglat","doi":"10.1109/icoa.2018.8370599","DOIUrl":"https://doi.org/10.1109/icoa.2018.8370599","url":null,"abstract":"Discretization continuous feature is an important task to handle the problems with real values in machine learning. In order to construct a classifier using a discrete space, it is required for many supervised classification algorithms to perform with discretized features. In this paper, we presents the supervised classification model based on Hidden Markov Model (HMM) developed recently and we review several discretization methods reported in the litterature. We take 9 benchmarking study data set to evaluate the performance and study the effect of discretization methods on the assessment of the proposed learning algorithm. Three metrics performance including accuracy, Area under curve and squared loss are used to investigate the powerful class prediction and to show the capability of HMM classifier in presence of available data.","PeriodicalId":433166,"journal":{"name":"2018 4th International Conference on Optimization and Applications (ICOA)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126875651","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
The impact of network structure in collaborative distribution system 网络结构对协同配送系统的影响
2018 4th International Conference on Optimization and Applications (ICOA) Pub Date : 2018-04-01 DOI: 10.1109/ICOA.2018.8370566
Hanan Ouhader, Malika Elkyal
{"title":"The impact of network structure in collaborative distribution system","authors":"Hanan Ouhader, Malika Elkyal","doi":"10.1109/ICOA.2018.8370566","DOIUrl":"https://doi.org/10.1109/ICOA.2018.8370566","url":null,"abstract":"In this paper, we study the impact of network structure in the economic and environmental benefits to assess the opportunities offered by shippers horizontal collaboration in a distribution system. We analyze three network configurations for distribution which differ in the location of satellites (intermediate depots) within the distribution area. We exploit a bi-objective mathematical model for a two echelon location routing problem (2E-LRP) to test if partners fit for the collaboration or not. Extended known instances reflecting the real distribution in urban area are regenerated to evaluate several goods' delivery strategies. The goal is to present to decision makers a preliminary mechanism to gain general insights into beneficial network structure for the coalition and to measure the sustainability performance of coalition during the design phase of the network.","PeriodicalId":433166,"journal":{"name":"2018 4th International Conference on Optimization and Applications (ICOA)","volume":"115 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121513035","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: 3
Investigating the effectiveness of the sobel operator in the MCA-based automatic crack detection 研究了sobel算子在基于mca的裂纹自动检测中的有效性
2018 4th International Conference on Optimization and Applications (ICOA) Pub Date : 2018-04-01 DOI: 10.1109/ICOA.2018.8370555
Ankur Dixit, H. Wagatsuma
{"title":"Investigating the effectiveness of the sobel operator in the MCA-based automatic crack detection","authors":"Ankur Dixit, H. Wagatsuma","doi":"10.1109/ICOA.2018.8370555","DOIUrl":"https://doi.org/10.1109/ICOA.2018.8370555","url":null,"abstract":"The life expansion of infrastructure systems is a common social issue in modernized countries and then early detection and treatment is the best solution on the issue. According to the shortage of the human resource for expert inspections, an automated detection of faulty points in the infrastructure is highly expected nowadays. Concrete crack detection in parts of bridges is a keen target in the robotic automatic inspection by using a drone with the high-resolution proximity camera. Taking fine pictures itself is not an issue if it is flying in the stable condition; however a micro vibration, intensity and/or contrast instability prevent a measurement under mm width of concrete cracks. Detecting the fine feature via images obtained from the drone attaching on the bridge deck requires an appropriate decomposition of different textures in image such as anisotropic structure, variance of gray scale distribution, orientation of local texture and directionality. We hypothesized that Morphological Component Analysis (MCA) based on sparse coding and the Sobel filter post-processing provides a possible texture decomposition for under-mm-range crack detection. In our experiments, decomposed images into their coarse and fine characteristics components were successfully obtained by using two dictionaries dual tree complex wavelet transform (DTCWT) and discrete wavelet transform (DWT) respectively and the coarse component was treated by the Sobel filter to exhibit the crack in a fine way. Our results demonstrated that the proposed MCA framework with the Sobel operator may contribute for an automation of crack detections even in open field severe conditions such as bridge decks.","PeriodicalId":433166,"journal":{"name":"2018 4th International Conference on Optimization and Applications (ICOA)","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127472023","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: 7
Wind turbine failures analysis based on performances study and FMECA 基于性能研究和FMECA的风力机故障分析
2018 4th International Conference on Optimization and Applications (ICOA) Pub Date : 2018-04-01 DOI: 10.1109/icoa.2018.8370570
A. Bennouk, A. Nejmi
{"title":"Wind turbine failures analysis based on performances study and FMECA","authors":"A. Bennouk, A. Nejmi","doi":"10.1109/icoa.2018.8370570","DOIUrl":"https://doi.org/10.1109/icoa.2018.8370570","url":null,"abstract":"This paper presents an approach to identify risks for different failures that could affect wind turbine performance, and reduce the Measured Annual Electrical Production (MAEP). The proposed approach is based on FMECA (Failure mode, effects and criticality analysis) and wind turbine performance study. We present firstly the methodology of performance calculation based on IEC 61400 standard, then we identify the energy gap between the MAEP and WAEP for the case study. We present an extended and reviewed FMECA, by introducing definition of factors related to Environment, Health and Security. As a result we present an actions plan for similar failures deduced from wind performance study and Risk-Based FMECA, in order to reduce failure risks and optimize production by consequence. The case study is a 2.3 MW onshore wind turbine. Different data that are used in this paper were collected from SCADA and Lidar.","PeriodicalId":433166,"journal":{"name":"2018 4th International Conference on Optimization and Applications (ICOA)","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128415724","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: 1
A new mathematical model for a multi-product location-arc routing problem 多产品位置-弧布线问题的一种新的数学模型
2018 4th International Conference on Optimization and Applications (ICOA) Pub Date : 2018-04-01 DOI: 10.1109/ICOA.2018.8370551
R. Tavakkoli-Moghaddam, A. Amini, S. Ebrahimnejad
{"title":"A new mathematical model for a multi-product location-arc routing problem","authors":"R. Tavakkoli-Moghaddam, A. Amini, S. Ebrahimnejad","doi":"10.1109/ICOA.2018.8370551","DOIUrl":"https://doi.org/10.1109/ICOA.2018.8370551","url":null,"abstract":"This paper addresses a multi-product location-arc routing problem by developing two mathematical models under two assumptions, namely all types of products of a required arc must be supplied by a tour and each type of products of a required arc must be supplied by a tour. Regarding the complexity of the models, this paper provides lower bounding (LB) models using the method exist in the related background. These bounds will help the decision makers to develop quality heuristics. The numerical results demonstrate the true performance of the developed models.","PeriodicalId":433166,"journal":{"name":"2018 4th International Conference on Optimization and Applications (ICOA)","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131683665","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: 3
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