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Efficient techniques for BGA solder joint identification in low resolution X-ray images 低分辨率x射线图像中BGA焊点识别的有效技术
2011 IEEE GCC Conference and Exhibition (GCC) Pub Date : 2011-04-19 DOI: 10.1109/IEEEGCC.2011.5752465
M. Laghari, Raed Hijer, G. A. Khuwaja
{"title":"Efficient techniques for BGA solder joint identification in low resolution X-ray images","authors":"M. Laghari, Raed Hijer, G. A. Khuwaja","doi":"10.1109/IEEEGCC.2011.5752465","DOIUrl":"https://doi.org/10.1109/IEEEGCC.2011.5752465","url":null,"abstract":"The benefits of X-ray inspection are broad in scope due to the ability of X-rays to see through packages including: encapsulation, heat sinks, and metallic shielding to reveal obscured connections and identify potential quality nondestructive issues. X-ray inspection is particularly beneficial to applications that involve advanced packaging technologies such as Ball Grid Array (BGA). This paper proposes a method that relies on an image processing and computer vision technique that detects each ball of the X-ray image of BGA chip and flags the suspect balls for further evaluation and rework. It makes use of the basic geometric distinction between a circle (perfect solder ball) and an ellipse (balls with reshaped solder joint). Thus making it easier for the casual user to identify the suspect areas (solder joints) for further evaluation.","PeriodicalId":119104,"journal":{"name":"2011 IEEE GCC Conference and Exhibition (GCC)","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115948357","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: 6
Blood flow model for noninvasive diagnostics 无创诊断的血流模型
2011 IEEE GCC Conference and Exhibition (GCC) Pub Date : 2011-04-19 DOI: 10.1109/IEEEGCC.2011.5752521
D. Fricke, H. Koroll, J. Kraitl, H. Ewald
{"title":"Blood flow model for noninvasive diagnostics","authors":"D. Fricke, H. Koroll, J. Kraitl, H. Ewald","doi":"10.1109/IEEEGCC.2011.5752521","DOIUrl":"https://doi.org/10.1109/IEEEGCC.2011.5752521","url":null,"abstract":"An artificial blood flow model (BFM) based on the human circulatory system was developed to allow a controlled variation of the blood parameter as total haemoglobin concentration (ctHb), oxyhaemoglobin (O2Hb) and carboxyhaemoglobin (COHb). For this reason the optical properties of the blood were observed by online spectrometer measurements. The purpose was to observe the absorption, transmission and scattering properties of human whole blood in a wavelength range from 400 to 1700 nm. All the noninvasive measurements of the whole blood transmission-spectra were compared with sample results obtained by a Blood Gas Analyzer (BGA) to validate the results. For all measurements donor erythrocyte concentrates were used. The concentration of haemoglobin was changed by adding fixed amounts of blood plasma to the erythrocyte concentrate. Blood circulation and predetermined oxygen state were adjusted with an extra-corporal circulation unit. The blood was gently stirred and kept flowing through the blood tubes and the specially designed cuvettes (for spectrometric measurements). Oxygen saturation and COHb were adjusted by a continuous flow of N2, N2-CO- and N2-O2-mixture through a hollow fiber membrane oxygenator. The blood temperature was kept constant at 37 °C via a tube heating mechanism and a separate water circulation through the Oxygenator. In the future the blood flow model can be used for testing newly developed optical prototype devices","PeriodicalId":119104,"journal":{"name":"2011 IEEE GCC Conference and Exhibition (GCC)","volume":"429 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121109614","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
Sustainability of engineering education in the Gulf Cooperation Council region 海湾合作委员会地区工程教育的可持续性
2011 IEEE GCC Conference and Exhibition (GCC) Pub Date : 2011-04-19 DOI: 10.1109/IEEEGCC.2011.5752606
I. Damaj, F. Chaaban
{"title":"Sustainability of engineering education in the Gulf Cooperation Council region","authors":"I. Damaj, F. Chaaban","doi":"10.1109/IEEEGCC.2011.5752606","DOIUrl":"https://doi.org/10.1109/IEEEGCC.2011.5752606","url":null,"abstract":"At the turn of the 21st century, many universities have been established in the Gulf Cooperation Council (GCC) region, many of which are branches of universities from the USA, Europe, Australia, and other regions. In 2004, Dhofar University (DU), in collaboration and partnership with the American University of Beirut (AUB), opened its doors in Oman to follow the American model of higher education in many programs including engineering. Making use of AUB's well known engineering programs in the Middle East, founders of DU have planned to satisfy the demand for a sustainable institution that can serve students as well as society as a whole. This paper presents DU's experience in developing sustainable education institution in a region that lacked for long time private universities. The paper presents the model of collaboration between DU and AUB, and DU's efforts in preparing for accreditation. The paper also presents DU practices in balancing core academics and non-technical skills of engineering students. The cases studied are mainly from the academic programs of the Electrical and Computer Engineering (ECE) Department at the College of Engineering.","PeriodicalId":119104,"journal":{"name":"2011 IEEE GCC Conference and Exhibition (GCC)","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116293653","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
Accurate fault location of two-terminal transmission line based on one end voltage measurement and Smooth Support Vector Machines 基于一端电压测量和光滑支持向量机的两端输电线路故障精确定位
2011 IEEE GCC Conference and Exhibition (GCC) Pub Date : 2011-04-19 DOI: 10.1109/IEEEGCC.2011.5752591
Eyada A Alanzi, M. Younis
{"title":"Accurate fault location of two-terminal transmission line based on one end voltage measurement and Smooth Support Vector Machines","authors":"Eyada A Alanzi, M. Younis","doi":"10.1109/IEEEGCC.2011.5752591","DOIUrl":"https://doi.org/10.1109/IEEEGCC.2011.5752591","url":null,"abstract":"This paper presents a new technique for accurate fault location based on voltage measurement from one end of the two-terminal transmission line and Smooth Support Vector Machine (SSVM). Due to common problems of current transformer during fault location and as a result increasing the cost and reduction of the accuracy, proposed technique is independent of current measurement and based on one terminal voltage measurement of the transmission line. Post-fault voltage at one end of the line is measured and used in calculation of the fault location. GPS (global positioning system) is not required for this technique resulting in a reduction of economic cost. Using the proposed technique, fault location can be estimated with a lower than 0.025% error without using current transformers and GPS. EMTP/ATP simulation and SSVM results show that the proposed fault location technique is independent of fault type, fault resistance and fault inception of the transmission line.","PeriodicalId":119104,"journal":{"name":"2011 IEEE GCC Conference and Exhibition (GCC)","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127158359","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 new DOA estimation based on direct data domain algorithm 一种新的基于直接数据域算法的DOA估计
2011 IEEE GCC Conference and Exhibition (GCC) Pub Date : 2011-04-19 DOI: 10.1109/IEEEGCC.2011.5752510
A. Azarbar, G. Dadashzadeh
{"title":"A new DOA estimation based on direct data domain algorithm","authors":"A. Azarbar, G. Dadashzadeh","doi":"10.1109/IEEEGCC.2011.5752510","DOIUrl":"https://doi.org/10.1109/IEEEGCC.2011.5752510","url":null,"abstract":"Direct data domain least square (D3LS) approach has been developed so quickly for array signal processing. Because, only a single data snapshot instead of multiple needed to form a covariance matrix in conventional algorithms. Unfortunately it is generally assumed that one knows the direction of arrival (DOA) of the signal of interest (SOI) and the goal is to estimate its complex amplitude in the presence of jammer, clutter and noise This paper proposes a novel direction of arrival (DOA) estimation algorithm based on D3LS approach using the property of minimum of the sum of the norm of the adaptive weights that can be used as an indicator to estimate the DOA of the SOI in adaptive algorithms. Simulation results show that the proposed algorithm can estimate the DOAs of signals and its complex amplitude accurately in the presence of interference, clutter and noise.","PeriodicalId":119104,"journal":{"name":"2011 IEEE GCC Conference and Exhibition (GCC)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125306329","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
Application of super capacitor energy storage in microgrid system 超级电容器储能在微电网系统中的应用
2011 IEEE GCC Conference and Exhibition (GCC) Pub Date : 2011-04-19 DOI: 10.1109/IEEEGCC.2011.5752605
P. K. Soori, Subhas Chandra Shetty, Sibi Chacko
{"title":"Application of super capacitor energy storage in microgrid system","authors":"P. K. Soori, Subhas Chandra Shetty, Sibi Chacko","doi":"10.1109/IEEEGCC.2011.5752605","DOIUrl":"https://doi.org/10.1109/IEEEGCC.2011.5752605","url":null,"abstract":"With the advancement in distributed generation systems, Power Electronics and power semiconductor technologies, the microgrid system is considered as a promising solution to meet the growing energy demand. Super capacitor based energy storage system becomes one of the best choices for microgrid because of its high storage capacity, wide working temperature range, cost effectiveness and environmental advantages. The application of super capacitor energy storage system connected to microgrid is proposed in this paper. The proposal explored here is to address energy and carbon emission concerned global issues. The design and development of a dynamic support system for specific microgrid applications are discussed. The hardware and software design and development of a 7.8kW, singlephase converter connected to a 125V, 100Wh super capacitor bank is presented in the paper.","PeriodicalId":119104,"journal":{"name":"2011 IEEE GCC Conference and Exhibition (GCC)","volume":"334-335 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127737625","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: 24
Emulating reflex actions through memristors 通过忆阻器模拟反射动作
2011 IEEE GCC Conference and Exhibition (GCC) Pub Date : 2011-04-19 DOI: 10.1109/IEEEGCC.2011.5752558
Apurv Mittal, S. Swaminathan
{"title":"Emulating reflex actions through memristors","authors":"Apurv Mittal, S. Swaminathan","doi":"10.1109/IEEEGCC.2011.5752558","DOIUrl":"https://doi.org/10.1109/IEEEGCC.2011.5752558","url":null,"abstract":"The paper describes a method to simulate the reflex action of human beings in a robot. The paper uses the recently discovered memristors to implement a method for the reflex action, using a configuration of memristors developed to form multi-directional circuits. The benefit of memristive systems is that they are capable of integrating both data storage and data processing in a single device, which offers the potential to more closely emulate the capabilities of biological intelligence.","PeriodicalId":119104,"journal":{"name":"2011 IEEE GCC Conference and Exhibition (GCC)","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130511175","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
On the energy management in data center's microgrid 数据中心微电网能源管理研究
2011 IEEE GCC Conference and Exhibition (GCC) Pub Date : 2011-04-19 DOI: 10.1109/IEEEGCC.2011.5752516
Teemu Koski, H. Koivo, V. Hasu
{"title":"On the energy management in data center's microgrid","authors":"Teemu Koski, H. Koivo, V. Hasu","doi":"10.1109/IEEEGCC.2011.5752516","DOIUrl":"https://doi.org/10.1109/IEEEGCC.2011.5752516","url":null,"abstract":"This paper focuses on the energy management of microgrid connected to a data center. In our simulation studies, we use microgrid including a diesel generator, a micro turbine and the supply from the main grid. The energy supply management in microgrid is studied with a few allocation procedures. The first procedure is based on Mesh Adaptive Direct Search (MADS) optimization. The second procedure is an expert system. Based on the simulations, the paper suggests features for energy management algorithms of data centers' microgrids.","PeriodicalId":119104,"journal":{"name":"2011 IEEE GCC Conference and Exhibition (GCC)","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132745536","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
Exploiting opportunistic networking in the GCC 利用海湾合作委员会中的机会主义网络
2011 IEEE GCC Conference and Exhibition (GCC) Pub Date : 2011-04-19 DOI: 10.1109/IEEEGCC.2011.5752475
Youssef M. Francis, Khaled A. Harras, Saquib Razak
{"title":"Exploiting opportunistic networking in the GCC","authors":"Youssef M. Francis, Khaled A. Harras, Saquib Razak","doi":"10.1109/IEEEGCC.2011.5752475","DOIUrl":"https://doi.org/10.1109/IEEEGCC.2011.5752475","url":null,"abstract":"Mobile users nowadays expect network connectivity in all places and at all times. While 3G and 4G networks promise to satisfy this growing demand, these networks can be overloaded, and users prefer free network access whenever possible. Research in Delay/Disruption Tolerant Networks (DTNs), has demonstrated the viability of opportunistically utilizing public 802.11 networks for providing networking connectivity. In this paper, we take a first step towards understanding the potential 802.11 resources that can be exploited from taking advantage of opportunistic networking as one of the alternatives for data access on the Internet. We report on the results of a system we built that recorded 802.11 AP's in Doha, and conclude that the GCC is a fertile ground for conducting DTN type research as an alternative that would fulfill the growing demand of its mobile users.","PeriodicalId":119104,"journal":{"name":"2011 IEEE GCC Conference and Exhibition (GCC)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128440863","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
Engineering education: Importance and relevance of ubiquitous technologies 工程教育:无处不在的技术的重要性和相关性
2011 IEEE GCC Conference and Exhibition (GCC) Pub Date : 2011-04-19 DOI: 10.1109/IEEEGCC.2011.5752499
S. Martín, E. Sancristóbal, R. Gil, G. Díaz, M. Castro, J. Peire
{"title":"Engineering education: Importance and relevance of ubiquitous technologies","authors":"S. Martín, E. Sancristóbal, R. Gil, G. Díaz, M. Castro, J. Peire","doi":"10.1109/IEEEGCC.2011.5752499","DOIUrl":"https://doi.org/10.1109/IEEEGCC.2011.5752499","url":null,"abstract":"This paper analyzes the current technology trends in engineering education, focusing on the importance of ubiquitous technologies, such as Radio Frequency Identification, mobile devices, context-awareness, and geo-location. This paper reviews how these technologies have impacted education and the future impact that experts forecasts will have in a near future.","PeriodicalId":119104,"journal":{"name":"2011 IEEE GCC Conference and Exhibition (GCC)","volume":"61 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131992605","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
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