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Cluster protocols in Underwater Sensor Networks: a Research Review 水下传感器网络中的集群协议研究综述
IF 0.6
journal of engineering science and technology Pub Date : 2014-08-01 DOI: 10.25103/JESTR.073.27
N. Savage, K. Ovaliadis
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引用次数: 16
On quaternion based parameterization of orientation in computer vision and robotics 计算机视觉与机器人中基于四元数的方向参数化
IF 0.6
journal of engineering science and technology Pub Date : 2013-12-01 DOI: 10.25103/JESTR.065.03
G. Terzakis, P. Culverhouse, G. Bugmann, Sanjay K. Sharma, R. Sutton
{"title":"On quaternion based parameterization of orientation in computer vision and robotics","authors":"G. Terzakis, P. Culverhouse, G. Bugmann, Sanjay K. Sharma, R. Sutton","doi":"10.25103/JESTR.065.03","DOIUrl":"https://doi.org/10.25103/JESTR.065.03","url":null,"abstract":"The problem of orientation parameterization for applications in computer vision and robotics is examined in detail herein. The necessary intuition and formulas are provided for direct practical use in any existing algorithm that seeks to minimize a cost function in an iterative fashion. Two distinct schemes of parameterization are analyzed: The first scheme concerns the traditional axis-angle approach, while the second employs stereographic projection from unit quaternion sphere to the 3D real projective space. Performance measurements are taken and a comparison is made between the two approaches. Results suggests that there exist several benefits in the use of stereographic projection that include rational expressions in the rotation matrix derivatives, improved accuracy, robustness to random starting points and accelerated convergence. © 2014 Kavala Institute of Technology.","PeriodicalId":15709,"journal":{"name":"journal of engineering science and technology","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69297797","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: 9
Ad-hoc Networks Energy Consumption: A review of the Ad-Hoc Routing Protocols Ad-hoc网络能量消耗:Ad-hoc路由协议综述
IF 0.6
journal of engineering science and technology Pub Date : 2010-06-01 DOI: 10.25103/JESTR.031.27
V. Kanakaris, D. Ndzi, D. Azzi
{"title":"Ad-hoc Networks Energy Consumption: A review of the Ad-Hoc Routing Protocols","authors":"V. Kanakaris, D. Ndzi, D. Azzi","doi":"10.25103/JESTR.031.27","DOIUrl":"https://doi.org/10.25103/JESTR.031.27","url":null,"abstract":"In MANETs (Mobile Ad Hoc Networks) communication at the mobile nodes can be achieved by using multihop wireless links. The architecture of such network is based not on a centralized base station but on each node which acts as a router and forwards data packets to other nodes in the network. The aim of each protocol, in an ad-hoc network, is to find valid routes between two communicating nodes. These protocols must be able to handle high mobility of the nodes which often cause changes in the network topology. This paper evaluates four ad-hoc network protocols (AODV, DSDV, DSR and TORA) in different network scales taking into consideration the mobility factor. The evaluation of these four protocols was carried out using Network Simulator-2 (ns2), and the poor performance of TORA may be attributed to its implementation in this package. Therefore further investigation of TORA implementation in ns2 needs to be carried out.","PeriodicalId":15709,"journal":{"name":"journal of engineering science and technology","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2010-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69297787","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: 96
AN EFFICIENT BOUNDARY FITTED NON-HYDROSTATIC MODEL FOR FREE-SURFACE FLOWS 自由表面流动的有效边界拟合非静力模型
IF 0.6
journal of engineering science and technology Pub Date : 2007-01-01 DOI: 10.1007/978-3-540-75995-9_110
A. Ahmadi, P. Badiei, M. Namin
{"title":"AN EFFICIENT BOUNDARY FITTED NON-HYDROSTATIC MODEL FOR FREE-SURFACE FLOWS","authors":"A. Ahmadi, P. Badiei, M. Namin","doi":"10.1007/978-3-540-75995-9_110","DOIUrl":"https://doi.org/10.1007/978-3-540-75995-9_110","url":null,"abstract":"","PeriodicalId":15709,"journal":{"name":"journal of engineering science and technology","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2007-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"51063816","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
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