检索结果-内蒙古大学图书馆

Electronics system-Integration Technology Conference, ESTC

作者： Yan Zhang Shun Wang Jing-yu Fan Johan Liu Key Laboratory of Advanced Display and System Applications Ministry of Education and SMIT Center School of Mechatronics Engineering and Automation Shanghai University Shanghai China Shanghai Institute of Applied Mathematics and Mechanics Shanghai University Shanghai China SMIT Center & Bionano Systems Laboratory Department of Microtechnology and Nanoscience Chalmers University of Technology Gothenburg Sweden

With the continuously increasing packaging density, the corresponding techniques for heat dissipation are vital to high performance components. During the system operation, the heat generated by components must be efficiently transferred outside of the electronic package. To meet the heat removal requirement of the electronic devices with a high power, several liquid cooling schemes have been suggested, among which the micro-channel cooler have gained the most attention. Simultaneously, the carbon nanotube (CNT) has attracted a significant interest in the material properties and exploratory application. Some studies have been recently conducted to evaluate the thermal performance of the CNTs and their applicability for heat removal in integrated circuit (IC) devices. By utilizing the adhesive transfer process to form the CNT bundles as the fins during the micro-channel development, the devices can be immune from the high temperature required by the CNT growth process. In the present paper, the interface heat transfer in the CNT-based micro-channel cooler has been investigated. The thermal resistances introduced by the interface between the CNT and the epoxy due to adhesive transfer and the interface between the CNT and water have been simulated by molecular dynamics simulation (MDS) method. And the thermal resistance at the interface between the CNT and the epoxy is about 1.0×1.5 - 10 -8 Km 2 /W. The obtained MDS results are likely to provide the microscopic understanding of the thermal performance of the CNT micro-channel cooler as well as provide references to the macroscopic evaluation of the thermal efficiency for the micro-channel cooler design and optimization.

关键词： Heat transfer Thermal resistance Carbon nanotubes Conductivity Materials

来源：评论

学校读者我要写书评

暂无评论

Anisotropic thermal conductivity in electrically conductive adhesives with single- and bimodal filler-size distributions containing Ag flakes and micro-particles

Anisotropic thermal conductivity in electrically conductive ...

引用

Electronics system-Integration Technology Conference, ESTC

作者： Masahiro Inoue Hiroaki Muta Shinsuke Yamanaka Johan Liu Institute of Scientific and Industrial Research Osaka University Osaka Japan Division of Sustainable Energy and Environmental Engineering Graduate School of Engineering Osaka University Suita Osaka Japan Key Laboratory of Advanced display and System Applications and SMIT Center Shanghai University Mechatronics Engineering Shanghai China

Adhesives containing Ag flakes and spherical micro-particles were prepared. The variations in their electrical and thermal conductivities with matrix chemistry and curing temperature were investigated. Due to the alignment of Ag flakes along the in-plane direction, the adhesives containing only Ag flakes provided maximum thermal conductivity in this direction. Introduction of Ag spherical micro-particles effectively improved the thermal conductivity in the vertical direction for the bi- and single-modal adhesives. The adhesives containing only micro-particles are expected to be most effective from the viewpoint of the number of interfaces. However, the filler size distributions that provide maximum thermal conductivity in the vertical direction alter depending on the matrix chemistry and curing temperature due to variation in the interfacial thermal resistance between fillers.

关键词： Heating Annealing Temperature measurement Variable speed drives Resins

来源：评论

学校读者我要写书评

暂无评论

Anisotropic thermal conductivity in electrically conductive adhesives with single- and bimodal filler-size distributions containing Ag flakes and micro-particles

Anisotropic thermal conductivity in electrically conductive ...

引用

3rd Electronics system Integration Technology Conference, ESTC 2010

作者： Inoue, Masahiro Muta, Hiroaki Yamanaka, Shinsuke Liu, Johan The Institute of Scientific and Indistrial Research Osaka University 8-1 Mihogaoka Ibaraki Osaka 567-0047 Japan Division of Sustainable Energy and Environmental Engineering Graduate School of Engineering Osaka University 2-1 Yamadaoka Suita Osaka 565-0871 Japan Department of Microtechnology and Nanoscience Chalmers University of Technology Kemivägen 9 SE-412 96 Göteborg Sweden Key Laboratory of Advanced Display and System Applications SMIT Center Shanghai University Box 282 No. 149 Yan Chang Road Shanghai 200072 China

ISBN: (纸本)9781424485536

关键词： Adhesives

来源：评论

学校读者我要写书评

暂无评论

Motion attention based frame-level bit allocation scheme for H.264 09

Motion attention based frame-level bit allocation scheme for...

引用

1st International Conference on Internet Multimedia Computing and Service, ICIMCS 2009

作者： Shen, Liquan Liu, Zhi Zhang, Zhaoyang Yan, Hongbo Key Lab. of Advanced Display and System Application Ministry of Education Shanghai University China

ISBN: (纸本)9781605588407

Rate control plays a major role in video coding and multimedia streaming. A well-designed rate control scheme should pursue both the objective quality and subjective quality. However, existing H.264 rate control algorithms mainly aim at improving the objective quality without consideration the perception of human view system (HVS). In this paper, we propose a novel rate control algorithm based on local motion attention. The bits allocated to each frame are proportional to the local motion activity in it, and more bits are allocated to the frame with strong local motion attention. Experiment results show that our method not only enhances the coding quality in the frames with strong local motion attention but also reduces the temporal PSNR fluctuation across frames up to 22.15%. Copyright 2009 ACM.

关键词： Image coding

来源：评论

学校读者我要写书评

暂无评论

Color correction method based on histogram segmentation for multiview video

Color correction method based on histogram segmentation for ...

引用

Institution of Engineering and Technology International Communication Conference on Wireless Mobile and Computing

作者： Liu, Yi Wang, Yongfang Zhang, Zhaoyang School of Communication and Information Engineering Shanghai University Shanghai 200072 China Key Laboratory of Advanced Display and System Application Ministry of Education Shanghai 200072 China

ISBN: (纸本)9781849191388

Color differences between different views can cause performance degradation in multiview video coding. In order to overcome this problem, in this paper a local color correction method based on histogram segmentation is proposed. In the proposed method, we correct the color changes in the different segmentation regions between the current picture and the reference picture. Extensive experimental results demonstrate that the proposed method outperforms the traditional global linear color correction methods with objective mean of disparity values and subjective visual quality, and achieves better correction results.

关键词： Color

来源：评论

学校读者我要写书评

暂无评论

Robust video foreground segmentation and face recognition

引用

Journal of Shanghai University(English Edition) 2009年第4期13卷 311-315页

作者：管业鹏 School of Communication and Information Engineering Shanghai University Key Laboratory of Advanced Displays and System Application Ministry of Education Shanghai University

Face recognition provides a natural visual interface for human computer interaction （HCI） applications. The process of face recognition, however, is inhibited by variations in the appearance of face images caused by changes in lighting, expression, viewpoint, aging and introduction of occlusion. Although various algorithms have been presented for face recognition, face recognition is still a very challenging topic. A novel approach of real time face recognition for HCI is proposed in the paper. In view of the limits of the popular approaches to foreground segmentation, wavelet multi-scale transform based background subtraction is developed to extract foreground objects. The optimal selection of the threshold is automatically determined, which does not require any complex supervised training or manual experimental calibration. A robust real time face recognition algorithm is presented, which combines the projection matrixes without iteration and kernel Fisher discriminant analysis （KFDA） to overcome some difficulties existing in the real face recognition. Superior performance of the proposed algorithm is demonstrated by comparing with other algorithms through experiments. The proposed algorithm can also be applied to the video image sequences of natural HCI.

关键词： face recognition human computer interaction （HCI） foreground segmentation face detection threshold

来源：评论

学校读者我要写书评

暂无评论

EXPERIMENTAL STUDY ON THE VORTEX FORMATION AND ENTRAINMENT CHARACTERISTICS FOR A ROUND TRANSVERSE JET IN SHALLOW WATER

引用

Journal of Hydrodynamics 2009年第3期21卷 386-393页

作者： FAN Jing-yu ZHANG Yan WANG Dao-zeng Shanghai Institute of Applied Mathematics and Mechanics Shanghai University Shanghai 200072 China Key Laboratory of Advanced Display and System Applications Ministry of Education and SMIT Center School of Mechatronics Engineering and Automation Shanghai University Shanghai 200072 China

The vortex formation and entrainment characteristics for a round transverse jet in shallow water were experimentally investigated by means of a combination of LIF flow visualization and PIV measurement. A scarf vortex wrapped around the main body of the jet is formed in the near-wall region due to the interaction between the resulting wall jet and sufficiently shallow crossflow, with some more or less unsteady flow properties and with spreading ranges as functions of both the velocity ratio and the water depth within the near field. The entrainment of the ambient crossflow fluid into the jet main body is closely associated with the time-evolving features of the shear layer between the jet and surrounding fluid as well as the induced vortical structures near the wall. In the case of slight impingement upon the wall, the interaction between the jet shear layer and the weak, unstable scarf vortex gives rise to an appreciable local entrainment enhancement, confined in the near-wall region in the vicinity of the stagnation point. While in the case of intense impingement upon the wall, the well-organized and stable scarf vortex gives rise to a greatly enhanced entrainment and a greatly increased lateral spreading rate nearly throughout the overall near field as compared to the conventional wall jet. In addition, the entrainment of the ambient crossflow fluid by the scarf vortex in this case occurs largely on the surface of the unique spiral roller structure by itself due to the presence of smaller and unorganized eddies, and accordingly the scarf vortex is likely to keep its spiral roller structure steadily to a relatively great downstream distance within the near field.

关键词： transverse jet shallow water vortex formation entrainment PIV measurement

来源：评论

学校读者我要写书评

暂无评论

Efficient VLSI architecture of CAVLC decoder with power optimized

引用

Journal of Shanghai University(English Edition) 2009年第6期13卷 462-465页

作者：陈光化胡登基张金艺郑伟峰曾为民 Key Laboratory of Advanced Display and System Applications Ministry of Education Shanghai Key Laboratory of Power Station Automation Technology School of Mechatronics Engineering and Automation Shanghai University

This paper presents an efficient VLSI architecture of the contest-based adaptive variable length code （CAVLC） decoder with power optimized for the H.264/advanced video coding （AVC） standard. In the proposed design, according to the regularity of the codewords, the first one detector is used to solve the low efficiency and high power dissipation problem within the traditional method of table-searching. Considering the relevance of the data used in the process of runbefore＇s decoding, arithmetic operation is combined with finite state machine （FSM）, which achieves higher decoding efficiency. According to the CAVLC decoding flow, clock gating is employed in the module level and the register level respectively, which reduces 43% of the overall dynamic power dissipation. The proposed design can decode every syntax element in one clock cycle. When the proposed design is synthesized at the clock constraint of 100 MHz, the synthesis result shows that the design costs 11 300 gates under a 0.25 μm CMOS technology, which meets the demand of real time decoding in the H.264/AVC standard.

关键词： H.264/advanced video coding （AVC） contest-based adaptive variable length code （CAVLC） decoder

来源：评论

学校读者我要写书评

暂无评论

Micropolar interface model of thin-layered interconnection components with heterogeneous internal microstructures

引用

Journal of Shanghai University(English Edition) 2009年第5期13卷 345-348页

作者：张燕樊靖郁 Key Laboratory of Advanced Display and System Applications School of Mechatronics Engineering and AutomationShanghai University Shanghai Institute of Applied Mathematics and Mechanics Shanghai University

Being a wide variety of thin-layered interconnection components in electronics packaging with relatively small scale and heterogeneous materials, conventional numerical methods may be time consuming and even inefficacious to obtain an accurate prediction for the interface behavior under mechanical and/or thermal loading. Rather than resort to a fully spatial discretization in the vicinity of this interface zone, an interface model was proposed within the framework of micropolar theory by introducing discontinuous approximation. A fracture description was used to represent the microscopic failure progress inside the interface. The micropolar interface model was then numerically implemented with the finite element method. As an application, the interface behavior of a packaging system with anisotropic conductive adhesive (ACA) joint was analyzed, demonstrating its applicability and great efficiency.

关键词： interface model micropolar theory discontinuous approximation

来源：评论

学校读者我要写书评

暂无评论

A novel intermediate view synthesis method

A novel intermediate view synthesis method

引用

Institution of Engineering and Technology International Communication Conference on Wireless Mobile and Computing

作者： Zhang, Qian An, Ping Wang, He Zhang, Zhaoyang Ju, Qin School of Communication and Information Engineering Shanghai University Shanghai China Key Laboratory of Advanced Displays and System Application Ministry of Education Shanghai University Shanghai China

ISBN: (纸本)9781849191388

The intermediate view synthesis from arbitrary view plays an important role in three dimensional television system and multi-video compression. In this paper, we present a new view synthesis method based on a modified support-weights computation in disparity estimation, which utilize the centralized color vector and phase information, then we propose a view synthesis method. The experimental results show that our method improves the quality of the synthesized intermediate image compared with the well-known viewpoint synthesis method.

关键词： Television systems

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：