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2009 2nd International Conference on Adaptive Science & Technology (ICAST)最新文献

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Using business process modelling to reduce the effects of requirements changes in software projects 使用业务流程建模来减少软件项目中需求变更的影响
2009 2nd International Conference on Adaptive Science & Technology (ICAST) Pub Date : 2009-12-01 DOI: 10.1109/ICASTECH.2009.5409754
Eystein Mathisen, K. Ellingsen, T. Fallmyr
{"title":"Using business process modelling to reduce the effects of requirements changes in software projects","authors":"Eystein Mathisen, K. Ellingsen, T. Fallmyr","doi":"10.1109/ICASTECH.2009.5409754","DOIUrl":"https://doi.org/10.1109/ICASTECH.2009.5409754","url":null,"abstract":"Requests for changes to software systems have a potential damaging effect on software projects and the life span of software. Changes can not be avoided since it seems impossible to produce complete, correct and stable requirements. Late requests for deep, structural software changes are particularly harmful.","PeriodicalId":163141,"journal":{"name":"2009 2nd International Conference on Adaptive Science & Technology (ICAST)","volume":"4563 1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127791687","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
Designing and constructing transformer test system with aid of Labview 利用Labview设计和构建变压器测试系统
2009 2nd International Conference on Adaptive Science & Technology (ICAST) Pub Date : 2009-12-01 DOI: 10.1109/ICASTECH.2009.5409730
A. Emami, H. Yazdi
{"title":"Designing and constructing transformer test system with aid of Labview","authors":"A. Emami, H. Yazdi","doi":"10.1109/ICASTECH.2009.5409730","DOIUrl":"https://doi.org/10.1109/ICASTECH.2009.5409730","url":null,"abstract":"This paper describes the developments, and the practical implementation of on-line real-time testing system for three/single phase Distribution Transformers. To achieve this goal, a GUI (Graphical User Interface) program is developed by means of LabVIEW software. This implementation is also suitable for performance evaluation, efficiency testing, real-time on-line condition monitoring and protection of transformers with any type of design, size and characteristics. The new constructed transformer testing system takes into account the transformer parameter variations due to changes in electric supply, temperature, saturation and load. The described system is based on using a fast real-time computer based data acquisition system to measure, record and analyze the necessary parameter determination data such as current, voltage, power, frequency and temperature accurately and dynamically whilst testing the transformer. This system substantially reduces the testing time and saves energy while at the same time achieves higher accuracy compared with conventional transformer's testing methods.","PeriodicalId":163141,"journal":{"name":"2009 2nd International Conference on Adaptive Science & Technology (ICAST)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132596541","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
Igloo: Mobile learning system to facilitate and support learners and educators Igloo:移动学习系统，为学习者和教育者提供便利和支持
2009 2nd International Conference on Adaptive Science & Technology (ICAST) Pub Date : 2009-12-01 DOI: 10.1109/ICASTECH.2009.5409702
O. O. Samuel, A. Botha, M. Ford, Jp Tolmay, Chris Krause
{"title":"Igloo: Mobile learning system to facilitate and support learners and educators","authors":"O. O. Samuel, A. Botha, M. Ford, Jp Tolmay, Chris Krause","doi":"10.1109/ICASTECH.2009.5409702","DOIUrl":"https://doi.org/10.1109/ICASTECH.2009.5409702","url":null,"abstract":"The proliferation of mobile devices as well as the convergence of mobile communications and handheld devices offers the opportunity to design technology that will assist individuals and groups to learn anytime, anywhere. Therefore, mobile technologies are increasingly used to facilitate learning process and the use of these technologies creates new opportunities and challenges. However, designing, implementing and evaluating educational technology in mobile learning is largely unchartered territory. This paper describes the design, implementation and evaluation a mobile learning technology, namely IGLOO for mobile devices. It is intended to support educators as well as students in a learning environment. A working prototype system is discussed and evaluated.","PeriodicalId":163141,"journal":{"name":"2009 2nd International Conference on Adaptive Science & Technology (ICAST)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121184909","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
Increase in multicast OFDM data rate in PLC network using adaptive LP-OFDM 采用自适应LP-OFDM提高PLC网络组播OFDM数据速率
2009 2nd International Conference on Adaptive Science & Technology (ICAST) Pub Date : 2009-12-01 DOI: 10.1109/ICASTECH.2009.5409695
A. Maiga, J. Baudais, J. Hélard
{"title":"Increase in multicast OFDM data rate in PLC network using adaptive LP-OFDM","authors":"A. Maiga, J. Baudais, J. Hélard","doi":"10.1109/ICASTECH.2009.5409695","DOIUrl":"https://doi.org/10.1109/ICASTECH.2009.5409695","url":null,"abstract":"Linear precoding (LP) technique applied to OFDM systems has already proved its ability to significantly increase the system throughput in a powerline communication (PLC) context. In this paper, we propose resource allocation algorithms based on the LP technique to increase the multicast OFDM systems bit rate. The conventional multicast capacity is limited by the user which experiences the worst channel conditions. To increase the multicast bit rate, these proposed algorithms assign subcarriers and bits to different multicast users. Simulations are run over PLC channels and it is shown that the proposed solutions offer a bit rate gain up to 37% compared to the conventional multicast bit rate.","PeriodicalId":163141,"journal":{"name":"2009 2nd International Conference on Adaptive Science & Technology (ICAST)","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114485034","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: 8
Prospects of pre-timed arterial traffic control systems in city roads of a typical developing country: a case study of Dar es Salaam City 典型发展中国家城市道路预定时主干道交通控制系统的前景:以达累斯萨拉姆市为例
2009 2nd International Conference on Adaptive Science & Technology (ICAST) Pub Date : 2009-12-01 DOI: 10.1109/ICASTECH.2009.5409704
N. Hamisi, N. Mvungi, D. Mfinanga, B. Mwinyiwiwa
{"title":"Prospects of pre-timed arterial traffic control systems in city roads of a typical developing country: a case study of Dar es Salaam City","authors":"N. Hamisi, N. Mvungi, D. Mfinanga, B. Mwinyiwiwa","doi":"10.1109/ICASTECH.2009.5409704","DOIUrl":"https://doi.org/10.1109/ICASTECH.2009.5409704","url":null,"abstract":"This paper looks into prospects of pre-timed arterial traffic control systems for cities with limited infrastructures. The methodologies for designing a pre-timed arterial traffic controller system were researched. A prototype designed and implemented in Field Programmable Gate Arrays (FPGA) is presented. Dar es Salaam Roads have been used to provide data for the design and implementation whereby the neighboring road intersections within a logically computed radius of less than 250m qualified for pre-timed arterial traffic controller. One intersection is a master and the remaining ones act as slaves. Using Very High Speed Hardware Descriptive Language (VHDL), an algorithm has been developed for coordinating adjacent traffic signals along the arterial roads. The use of VHDL enabled the algorithm to be implemented and tested in Xilinx Spartan 2E Field Programmable Gate Array (FPGA) that functioned and served the purpose of real-time simulation of Arterial Traffic Controller.","PeriodicalId":163141,"journal":{"name":"2009 2nd International Conference on Adaptive Science & Technology (ICAST)","volume":"516 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116226773","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: 2
Design, fabrication, and measurement of four-by-four planar antenna sub-array 四乘四平面天线子阵的设计、制造与测量
2009 2nd International Conference on Adaptive Science & Technology (ICAST) Pub Date : 2009-12-01 DOI: 10.1109/ICASTECH.2009.5409693
K. H. Badr
{"title":"Design, fabrication, and measurement of four-by-four planar antenna sub-array","authors":"K. H. Badr","doi":"10.1109/ICASTECH.2009.5409693","DOIUrl":"https://doi.org/10.1109/ICASTECH.2009.5409693","url":null,"abstract":"In this paper a new design for planar microstrip antenna 4-by-4 sub-array is presented. This sub-array can be integrated into different antenna arrays to reach suitable gains required for different applications such as satellite TV receivers, and direct broadcast by satellite DBS systems. It has been implemented on Rogers substrate using printed circuit board PCB technology. This sub-array is formed by connecting four 2-by-2 sub-arrays using corporate feeding networks. The new design is simulated using Agilent ADS/Momentum simulator. The presented simulation results include both S-paramters and radiation patterns. The photgraphs of the fabricated prototype are included. The present sub-array offers a very good isolation between the feeding ports, dual-polarization radiation, low levels of cross polarization, high radiation efficiency, and wide impedance bandwidth.","PeriodicalId":163141,"journal":{"name":"2009 2nd International Conference on Adaptive Science & Technology (ICAST)","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124318327","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: 8
Optical orthogonal codes over wavelength division multiplexing in passive optical network communication system and its performance analysis 无源光网络通信系统中光正交码波分复用及其性能分析
2009 2nd International Conference on Adaptive Science & Technology (ICAST) Pub Date : 2009-12-01 DOI: 10.1109/ICASTECH.2009.5409750
A. Kora, F. Diop, J. Cances, S. Ouya
{"title":"Optical orthogonal codes over wavelength division multiplexing in passive optical network communication system and its performance analysis","authors":"A. Kora, F. Diop, J. Cances, S. Ouya","doi":"10.1109/ICASTECH.2009.5409750","DOIUrl":"https://doi.org/10.1109/ICASTECH.2009.5409750","url":null,"abstract":"The paper presents a generalized analytical model of error probability in passive optical network (PON) in which optical orthogonal codes (OOC) and (dense) wavelength division multiplexing (WDM) have been considered. Low cost deployment of these networks is determined by several parameters characterizing this system such as optic transmitters with a relatively large spectrum. The distance between the wavelengths used at the transmitters, the code length, the code weight and the correlation values are taken into account in the formulation of a user communication link performance. This work evaluates the relationship between a network using OOC and WDM parameters in crosstalk situation. Simulations results are provided to validate the model and prove the practical significance of the approach.","PeriodicalId":163141,"journal":{"name":"2009 2nd International Conference on Adaptive Science & Technology (ICAST)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133676139","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
Rapid application development for mobile terminals 移动端应用开发迅速
2009 2nd International Conference on Adaptive Science & Technology (ICAST) Pub Date : 2009-12-01 DOI: 10.1109/ICASTECH.2009.5409691
N. Amanquah, O. T. Eporwei
{"title":"Rapid application development for mobile terminals","authors":"N. Amanquah, O. T. Eporwei","doi":"10.1109/ICASTECH.2009.5409691","DOIUrl":"https://doi.org/10.1109/ICASTECH.2009.5409691","url":null,"abstract":"Mobile application development has become important because there are significantly more mobile phones in use today than computers in many emerging economies. With the advent of data services, mobile phones can be employed as capable computers. Many persons have ideas regarding how a phone could simplify transactions they engage in often, but may lack the time or skill to develop such applications. Currently, there are methods to develop such mobile applications but these methods are time consuming, tedious and repetitive. To tackle these challenges code generators can be used. Code generation is a mechanism to produce computer programs in some automatic manner. This technique can enhance software development in different ways by improving developer productivity, producing complete quality code and save time spent on application development. There are currently, no code generators to create complete, useful mobile applications to the best of the authors' knowledge. This paper illustrates how development can be improved by creating a code generator that builds standalone mobile applications, database applications with a mobile interface, and also creates PHP scripts that can be used to view the data on a desktop browser.","PeriodicalId":163141,"journal":{"name":"2009 2nd International Conference on Adaptive Science & Technology (ICAST)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116514182","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: 11
Dynamic probabilistic counter-based broadcasting in mobile ad hoc networks 移动自组网中基于动态概率计数器的广播
2009 2nd International Conference on Adaptive Science & Technology (ICAST) Pub Date : 2009-12-01 DOI: 10.1109/ICASTECH.2009.5409735
Aminu Mohammed, M. Ould-Khaoua, L. Mackenzie, J. Abdulai
{"title":"Dynamic probabilistic counter-based broadcasting in mobile ad hoc networks","authors":"Aminu Mohammed, M. Ould-Khaoua, L. Mackenzie, J. Abdulai","doi":"10.1109/ICASTECH.2009.5409735","DOIUrl":"https://doi.org/10.1109/ICASTECH.2009.5409735","url":null,"abstract":"In Mobile Ad hoc Network (MANETs), flooding is the simplest broadcasting mechanism where each node retransmits every uniquely received packet exactly once. Despite its simplicity it could potentially leads to high redundant retransmissions causing high channel contention and thus excessive packet collisions in the network. This phenomenon referred to as broadcast storm problem has been shown to greatly increase the network communication overhead and end-to-end delay. Numerous probabilistic approaches have been proposed to mitigate the impact of this inherent phenomenon. However, most of these techniques are inadequate in reducing the number of redundant retransmissions while still guaranteeing that all nodes receive the packet. Further, in most cases they use a predetermined forwarding probability value for all nodes in the network which is quite unlikely to be optimal in other network set up. In this paper, we propose a new dynamic probabilistic counter-based broadcast scheme that can dynamically compute the forwarding probability at a node based on its neighbourhood information. Simulation results show that the new broadcast scheme achieves superior performance in terms of retransmitting nodes, collision rate, and end-to-end delay without sacrificing reachability compared to the existing schemes.","PeriodicalId":163141,"journal":{"name":"2009 2nd International Conference on Adaptive Science & Technology (ICAST)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114772265","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: 38
Academic Ontology to support the Bologna Mobility Process 支持博洛尼亚移动过程的学术本体
2009 2nd International Conference on Adaptive Science & Technology (ICAST) Pub Date : 2009-12-01 DOI: 10.1109/ICASTECH.2009.5409708
J. Ferreira, P. Filipe
{"title":"Academic Ontology to support the Bologna Mobility Process","authors":"J. Ferreira, P. Filipe","doi":"10.1109/ICASTECH.2009.5409708","DOIUrl":"https://doi.org/10.1109/ICASTECH.2009.5409708","url":null,"abstract":"The Bologna Declaration reflects a search for a common European answer to common European problems. European higher education systems are facing common internal and external challengers related to the growth and diversification of higher education and the shortage of skills in key areas. The Bologna Declaration requires the creation of transparent curricula for European qualifications and the creation of free student mobility. This paper proposes a common conceptual model supported by an academic ontology Bologna process (AOBP) to allow interoperability between academic management systems as well to promote automation of academic management. The AOBP is defined using a UML2 specific profile for this business. This domain ontology will permit semantics mappings between different ontology variations and database schemas that may be support really the Bologna mobility process.","PeriodicalId":163141,"journal":{"name":"2009 2nd International Conference on Adaptive Science & Technology (ICAST)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129322949","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: 4
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