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Analysis of flicker mitigation in a utility distribution network 配电网闪变抑制分析
The IEEE Region 8 EUROCON 2003. Computer as a Tool. Pub Date : 2003-12-03 DOI: 10.1109/EURCON.2003.1248202
B. Blazic, I. Papič
{"title":"Analysis of flicker mitigation in a utility distribution network","authors":"B. Blazic, I. Papič","doi":"10.1109/EURCON.2003.1248202","DOIUrl":"https://doi.org/10.1109/EURCON.2003.1248202","url":null,"abstract":"A regional utility company in Slovenia reported excessive flicker levels that are caused mainly by a 4 MVA arc furnace installed in the area. This paper evaluates two possible solutions for flicker mitigation: increasing the short-circuit power at the point of common coupling; and installation of a D-StatCom system. Based on the field measurements, a detailed network model was constructed in the PSCAD/EMTDC program to verify the proposed solutions. The arc furnace and an IEC flicker-meter for flicker level evaluations were also modeled. A comprising solution to flicker mitigation was analyzed. The utility could reduce the flicker level from 4 to around 1.9 by replacing its HV/MV transformer. Further reduction of flicker (the permissible level is set to 1) should be done by the customer with the application of a D-StatCom compensation system. The structure and control of the device are proposed in this paper.","PeriodicalId":337983,"journal":{"name":"The IEEE Region 8 EUROCON 2003. Computer as a Tool.","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128800063","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: 18
Towards empirical evaluation of test-driven development in a university environment 面向大学环境中测试驱动开发的实证评估
The IEEE Region 8 EUROCON 2003. Computer as a Tool. Pub Date : 2003-12-03 DOI: 10.1109/EURCON.2003.1248153
M. Pancur, M. Ciglarič, M. Trampus, T. Vidmar
{"title":"Towards empirical evaluation of test-driven development in a university environment","authors":"M. Pancur, M. Ciglarič, M. Trampus, T. Vidmar","doi":"10.1109/EURCON.2003.1248153","DOIUrl":"https://doi.org/10.1109/EURCON.2003.1248153","url":null,"abstract":"Test driven development (TDD) is an agile software development technique and it is one of the core development practices of Extreme programming (XP). In TDD, developers write automatically executable tests prior to writing the code they test. We ran a set of experiments to empirically assess different parameters of the TDD. We compared TDD to a more \"traditionally\" oriented iterative test-last development process (ITL). Our preliminary results show that TDD is not substantially different from ITL and our qualitative findings about a development process are different from results obtained from other researches.","PeriodicalId":337983,"journal":{"name":"The IEEE Region 8 EUROCON 2003. Computer as a Tool.","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125392085","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: 88
Towards the automated restoration of old photographic prints: a survey 旧相片自动复原的研究进展
The IEEE Region 8 EUROCON 2003. Computer as a Tool. Pub Date : 2003-12-03 DOI: 10.1109/EURCON.2003.1248221
F. Stanco, G. Ramponi, A. D. Polo
{"title":"Towards the automated restoration of old photographic prints: a survey","authors":"F. Stanco, G. Ramponi, A. D. Polo","doi":"10.1109/EURCON.2003.1248221","DOIUrl":"https://doi.org/10.1109/EURCON.2003.1248221","url":null,"abstract":"The ubiquitous fruition of cultural and artistic heritage in the field of photography requires as a first step the conversion of a huge amount of old printed material into digital form, for successive manipulation and data management. This process is particularly delicate for photographic prints, which often show the effects of aging. This paper reports a list of the principal defects that can be detected in an old photography; the different origins of them, and their different features, suggest different restoration approaches.","PeriodicalId":337983,"journal":{"name":"The IEEE Region 8 EUROCON 2003. Computer as a Tool.","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123282624","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: 40
Suppression of range ambiguities in synthetic aperture radar systems 合成孔径雷达系统距离模糊的抑制
The IEEE Region 8 EUROCON 2003. Computer as a Tool. Pub Date : 2003-12-03 DOI: 10.1109/EURCON.2003.1248231
U. Stein, M. Younis
{"title":"Suppression of range ambiguities in synthetic aperture radar systems","authors":"U. Stein, M. Younis","doi":"10.1109/EURCON.2003.1248231","DOIUrl":"https://doi.org/10.1109/EURCON.2003.1248231","url":null,"abstract":"One of the principle limitations of synthetic aperture radar (SAR) systems is the restriction on resolution and coverage. In a conventional SAR simultaneous wide swath (coverage) and high cross range resolution is not possible, since the two requirements contradict each other. In practice, only a semi-optimum solution is obtained, which depends on the relation between the two performance parameters. This paper investigates possible enhancements of a conventional SAR system in order to overcome this contradiction. Special attention is paid to the analytic calculations necessary to evaluate the performance of the new methods and the feasibility of the hardware realization.","PeriodicalId":337983,"journal":{"name":"The IEEE Region 8 EUROCON 2003. Computer as a Tool.","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126258267","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: 12
3D modelling software as a tool in teaching at heavy current electrical engineering 三维建模软件在大电流电气工程教学中的应用
The IEEE Region 8 EUROCON 2003. Computer as a Tool. Pub Date : 2003-12-03 DOI: 10.1109/EURCON.2003.1247987
H. Kuchynkova
{"title":"3D modelling software as a tool in teaching at heavy current electrical engineering","authors":"H. Kuchynkova","doi":"10.1109/EURCON.2003.1247987","DOIUrl":"https://doi.org/10.1109/EURCON.2003.1247987","url":null,"abstract":"There is a tendency to enable a higher education for much more students in comparison with recent times. This concerns also technical universities. This aim calls for principally new modern methods of education, including creativity, invention and demonstration methods. One of the possibilities is to provide lectures with presentation of up to date computer aided design methods and their use in 3D technical documents preparation. The main goal for implementation of both new CAD packages and contemporary forms of technical documentation is to contribute to an independent creative ability of bachelor students.","PeriodicalId":337983,"journal":{"name":"The IEEE Region 8 EUROCON 2003. Computer as a Tool.","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125612842","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
Picture quality measures in image compression systems 图像压缩系统中的图像质量测量
The IEEE Region 8 EUROCON 2003. Computer as a Tool. Pub Date : 2003-12-03 DOI: 10.1109/EURCON.2003.1248017
Marta Mrak, S. Grgic, M. Grgic
{"title":"Picture quality measures in image compression systems","authors":"Marta Mrak, S. Grgic, M. Grgic","doi":"10.1109/EURCON.2003.1248017","DOIUrl":"https://doi.org/10.1109/EURCON.2003.1248017","url":null,"abstract":"A major problem in evaluating picture quality in image compression systems is the extreme difficulty in describing the type and amount of degradation in reconstructed image. Because of the inherent drawbacks associated with the subjective measures of picture quality, there has been a great deal of interest in developing an objective measure that can be used as a substitute. The aim of this paper is to examine a set of objective picture quality measures for application in still image compression systems and to highlight the correlation of these measures with subjective picture quality measures. Picture quality is measured using nine different objective picture quality measures and subjectively using mean opinion score (MOS) as a measure of perceived picture quality. The correlation between each objective measure and MOS is found. The effects of different image compression ratios are assessed and the best objective measures are proposed. Our results show that some objective measures correlate well with the perceived picture quality for a given compression algorithm but they are not reliable for an evaluation across different algorithms. So, we compared objective picture quality measures across different algorithms and we found measures, which serve well in all tested image compression systems.","PeriodicalId":337983,"journal":{"name":"The IEEE Region 8 EUROCON 2003. Computer as a Tool.","volume":"334 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132369605","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: 159
Trellis coded quantization for data hiding 栅格编码量化数据隐藏
The IEEE Region 8 EUROCON 2003. Computer as a Tool. Pub Date : 2003-12-03 DOI: 10.1109/EURCON.2003.1248224
E. Esen, A. A. Alatan, M. Askar
{"title":"Trellis coded quantization for data hiding","authors":"E. Esen, A. A. Alatan, M. Askar","doi":"10.1109/EURCON.2003.1248224","DOIUrl":"https://doi.org/10.1109/EURCON.2003.1248224","url":null,"abstract":"The intrusion of information theoretic tools into the data hiding realm lead to the design and analysis of new blind detection methods. Although an extended analysis has already been built on different quantization-based data hiding methods, we propose another quantization-based method, which uses trellis coded quantization. The performance of the proposed method is compared against other well-known methods by simulations. The promising results show that the proposed method can be preferred in certain applications.","PeriodicalId":337983,"journal":{"name":"The IEEE Region 8 EUROCON 2003. Computer as a Tool.","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122579940","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
Comparison of broadband network technologies 宽带网络技术比较
The IEEE Region 8 EUROCON 2003. Computer as a Tool. Pub Date : 2003-12-03 DOI: 10.1109/EURCON.2003.1248005
T. Kos, N. Sprljan, B. Zovko-Cihlar
{"title":"Comparison of broadband network technologies","authors":"T. Kos, N. Sprljan, B. Zovko-Cihlar","doi":"10.1109/EURCON.2003.1248005","DOIUrl":"https://doi.org/10.1109/EURCON.2003.1248005","url":null,"abstract":"Consumer growing demand for data communications forced telecommunication operators to greatly extend capabilities and capacity of their networks and to offer acceptable prices for all available information and communications services with high speed Internet connection for the small business and individual users. The article analyses different broadband network technologies, and compares advantages and disadvantages of ISDN and ADSL network infrastructure and CATV cable modem systems for a home user. The costs for the consumer of these services in Croatia were also compared.","PeriodicalId":337983,"journal":{"name":"The IEEE Region 8 EUROCON 2003. Computer as a Tool.","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122998998","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
ImAn - educational tool for image analysis 图像分析的教育工具
The IEEE Region 8 EUROCON 2003. Computer as a Tool. Pub Date : 2003-12-03 DOI: 10.1109/EURCON.2003.1248018
N. Sprljan, S. Grgic, M. Grgic
{"title":"ImAn - educational tool for image analysis","authors":"N. Sprljan, S. Grgic, M. Grgic","doi":"10.1109/EURCON.2003.1248018","DOIUrl":"https://doi.org/10.1109/EURCON.2003.1248018","url":null,"abstract":"In image compression system, statistical and subjective redundancies are removed to achieve bitrate reduction. Statistical and frequency characterization of image is an important step for understanding how image compression systems work. Students specializing in image and video system engineering need to know why these characteristics are important in their field of interest and to understand the influence of these characteristics on image quality. Therefore, we have developed educational software, called ImAn - Image Analyser, that helps students to analyze statistical and frequency characteristics of images that will be presented in this paper.","PeriodicalId":337983,"journal":{"name":"The IEEE Region 8 EUROCON 2003. Computer as a Tool.","volume":"199 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131490666","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 flexible framework for using positioning technologies in location-based services 在基于位置的服务中使用定位技术的灵活框架
The IEEE Region 8 EUROCON 2003. Computer as a Tool. Pub Date : 2003-12-03 DOI: 10.1109/EURCON.2003.1248157
J. Ranchordas, A. Lenaghan
{"title":"A flexible framework for using positioning technologies in location-based services","authors":"J. Ranchordas, A. Lenaghan","doi":"10.1109/EURCON.2003.1248157","DOIUrl":"https://doi.org/10.1109/EURCON.2003.1248157","url":null,"abstract":"This paper describes the development of a location-based service for the Web. We propose a framework that separates the roles of the positioning system and client side application. We argue that such an architecture offers useful flexibility in particular for future location based services that may draw on multiple positioning systems.","PeriodicalId":337983,"journal":{"name":"The IEEE Region 8 EUROCON 2003. Computer as a Tool.","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127641627","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: 16
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