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检索条件"任意字段=2011 3rd International Conference on Computer Research and Development, ICCRD 2011"

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High-order harmonic photoelectron spectroscopy system towards measuring attosecond electron dynamics on solid surfaces

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12th international conference on Multiphoton Processes, ICOMP 2011 and the 3rd international conference on Attosecond Physics, ATTO 2011

作者： Oguri, Katsuya Nakano, Hidetoshi Kato, Keiko Nishikawa, Tadashi Ishizawa, Atsushi Gotoh, Hideki Tateno, Kouta Sogawa, Tetsuomi NTT Basic Research Laboratories Nippon Telegraph and Telephone Corporation 3-1 Morinosato Wakamiya Atsugi Kanagawa 243-0198 Japan Department of Electrical Electronic and Computer Engineering Faculty of Science and Engineering 2100 Kujirai Kawagoe Saitama 350-8585 Japan

ISBN: (纸本)9783642289477

With the aim of tracking the motion of electrons on semiconductor surfaces on an attosecond timescale, we have developed a femtosecond time-resolved surface photoelectron spectroscopy (PES) system based on a 59th harmonic pulse source, and a 90-eV high-order harmonic pulse source using a few-cycle carrierenvelope phase (CEP) stabilized laser pulse. We used this surface PES system to measure the time evolution of the surface photovoltage effect on GaAs(0 0 1). We observed an energy shift of about 200 meV of a 3d-core level photoelectron peak towards a higher binding energy. This suggests that the surface potential changed owing to the spatial separation of the electron-hole pair that was generated by laser irradiation. Our observation of the CEP dependence of the harmonic spectrum generated by the CEP-stabilized few-cycle pulse indicates that this source has the potential to produce an attosecond EUV pulse. © Springer-Verlag Berlin Heidelberg 2012.

关键词： Photons

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research on the Programming Method based Process Planning and Kinematics for Mill-turn Machine

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3rd international conference on Manufacturing Science and Engineering (ICMSE 2012)

作者： Yao, Zhuang Yu, Dong Tian, Junfeng Zheng, Liaomo Hu, Yi Chinese Acad Sci Grad Univ Beijing 100049 Peoples R China Chinese Acad Sci Shenyang Inst Comp Technol Shenyang 110171 Peoples R China

ISBN: (纸本)9783037853702

With manufacturing industry tending to high-mix low-volume production, the turn-mill machining technology has recently received much attention. This research proposes the programming method using process planning and kinematic based on the existing problems during the course of the programming for the mill-turn machine. Firstly, through computing the volume of removal shape on the cylindrical blank shape, dividing the machining process for the spindles. Then recognizing the turning and milling process and computing their removal shape for obtaining tool path. According to complex configuration of the mill-turn machine, the machine kinematic chain is created to convert cutter location data generated into the NC data. Finally the effectiveness of the programming method is confirmed by machining experiment.

关键词： mill-turn machine process planning turning process milling process postprocessor

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Comparative performance of random forest and support vector machine classifiers for detection of colorectal lesions in CT colonography

Comparative performance of random forest and support vector ...

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3rd international Workshop on Computational and Clinical Applications in Abdominal Imaging, Held in Conjunction with the 14th international conference on Medical Image Computing and computer-Assisted Intervention, MICCAI 2011

作者： Näppi, Janne J. Regge, Daniele Yoshida, Hiroyuki Department of Radiology Massachusetts General Hospital Harvard Medical School 25 New Chardon Street Boston MA 02114 United States Institute for Cancer Research and Treatment Candiolo Str. Prov. 142 IT-10060 Turin Italy

ISBN: (纸本)9783642285561

A major problem of computer-aided detection (CAD) for computed tomographic colonography (CTC) is that CAD systems display large numbers of false-positive detections, thereby distracting users. Support vector machine (SVM) classifiers have been a popular choice for reducing false-positive detections in CAD systems. Recently, random forests (RF) have emerged as a novel type of highly accurate classifier. We compared the relative performance of RF and SVM classifiers in automated detection of colorectal lesions in CTC. The CAD system was trained with the CTC data of 123 patients and tested with an independent set of 737 patients. The results indicate that the performance of an RF classifier compares favorably with that of an SVM classifier in CTC. © 2012 Springer-Verlag.

关键词： Support vector machines

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Cross-compiling android applications to windows phone 7

Cross-compiling android applications to windows phone 7

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3rd international conference on Mobile Computing, Applications, and Services, MobiCASE 2011

作者： Antebi, Oren Neubrand, Markus Puder, Arno San Francisco State University Department of Computer Science 1600 Holloway Avenue San Francisco CA 94132 United States

ISBN: (纸本)9783642323195

Android is currently leading the smartphone segment in terms of market share since its introduction in 2007. Android applications are written in Java using an API designed for mobile apps. Other smartphone platforms, such as Apple's iOS or Microsoft's Windows Phone 7, differ greatly in their native application programming model. App developers who want to publish their applications for different platforms are required to re-implement the application using the respective native SDK. In this paper we describe a cross-compilation approach, whereby Android applications are cross-compiled to C# for Windows Phone 7. We describe different aspects of our cross-compiler, from byte code level cross-compilation to API mapping. A prototype of our cross-compiler called XMLVM is available under an Open Source license. © 2012 ICST Institute for computer Science, Social Informatics and Telecommunications Engineering.

关键词： Smartphones

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A toolkit for usability testing of mobile applications

A toolkit for usability testing of mobile applications

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3rd international conference on Mobile Computing, Applications, and Services, MobiCASE 2011

作者： Ma, Xiaoxiao Yan, Bo Chen, Guanling Zhang, Chunhui Huang, Ke Drury, Jill Computer Science Department University of Massachusetts Lowell 1 University Avenue Lowell MA 01854 United States

ISBN: (纸本)9783642323195

The usability of mobile applications is critical for their adoption particularly because of the relatively small screen and awkward (sometimes virtual) keyboard, despite the recent advances of smartphones. Traditional laboratory-based usability testing is often tedious, expensive, and does not reflect real use cases. In this paper, we propose a toolkit that embeds into mobile applications the ability to automatically collect user interface (UI) events as the user interacts with the applications. The events are fine-grained and useful for quantified usability analysis. We have implemented the toolkit on Android devices and we evaluated the toolkit with a real deployed Android application by comparing event analysis (state-machine based) with traditional laboratory testing (expert based). The results show that our toolkit is effective at capturing detailed UI events for accurate usability analysis. © 2012 ICST Institute for computer Science, Social Informatics and Telecommunications Engineering.

关键词： User interfaces

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research for Vision-based Mobile Robot Self-localization Strategy

Research for Vision-based Mobile Robot Self-localization Str...

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3rd international conference on Mechanical and Electronics Engineering (ICMEE 2011)

作者： Li Guanghui Jiang Zhijian Pan Bin Beijing Univ Civil Engn & Architecture Teachingroom1-5301 ZhanLan Rd Beijing 100044 Peoples R China Beijing Univ Civil Engn & Architecture Dept Elect Engn Beijing 100044 Peoples R China China Space Civil & Bdg Engn Inst Res Beijing 100071 Peoples R China

ISBN: (纸本)9783037852866

Mobile robots are a very dynamic part of the robotic domain, self-localization is one of the basic functions of them, in the complex environment, and whether to achieve precise localization is the key factor for mobile robot navigates accurately. In this paper, on the basis of the mobile robot can identify the set artificial landmark correctly through its vision sensors, then, based on the observe landmark and perspective localization method, the mobile robot's position and moving direction can be calculated in the world coordinate system. Finally, a lot of experiments are carried out, the experimental results show that in the structural environment, this mobile robot can realize self-localization under this method perfectly, and the localization accuracy and sampling frequency meet the need of practical requirement.

关键词： Mobile robot Self-localization Vision Artificial landmark

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Cognitive load based adaptive assistive technology design for reconfigured mobile android phone

Cognitive load based adaptive assistive technology design fo...

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3rd international conference on Mobile Computing, Applications, and Services, MobiCASE 2011

作者： Hossain, Gahangir Yeasin, Mohammed Electrical and Computer Engineering University of Memphis Memphis TN United States

ISBN: (纸本)9783642323195

In assistive technology design, it is indispensible to consider the sensory, physical and cognitive level of target users. Cognitive load is an important indicator of cognitive feedback during interaction and became the critical research issue in designing assistive user interfaces, incorporated with smartphone based assistive technology like in the android platform. In this paper, we proposed a cognitive load based user interface integrated with reconfigured mobile android phone (R-MAP) based on user's cognitive load level. We performed some cognitive tasks within a small group of sighted but blindfolded people and blind people or visually impaired using R-MAP. Based on task performance and cognitive load levels we manually annotated some data of 24 participants and finally applied some machine learning algorithms to automate the mobile interface. Based on our novel design and experimental finding, we recommended that "cognitive load enabled feedbacks based assistive user interface" would be a useful assistive tool for the people who use mobile phone for their daily operations. © 2012 ICST Institute for computer Science, Social Informatics and Telecommunications Engineering.

关键词： User interfaces

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Future Control and Automation - Proceedings of the 2nd international conference on Future Control and Automation, ICFCA 2012

Future Control and Automation - Proceedings of the 2nd Inter...

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3rd international Symposium on Artificial Intelligence, JSAI-isAI 2011

ISBN: (纸本)9783642310058

The proceedings contain 129 papers. The topics discussed include: research on landscape characteristics of Tibet landuse;experimental study on sand intercepting process of arbor vegetation in interlaced zone of desert and oasis in region of Arakan;accelerating 3D ocean model development by using GPU computing;seamless visualization of global multi-resolution DEM based on block DQG model;variational data assimilation of land surface model with MODIS data;shape recognition in support of simplification of buildings;the digital design of virtual time reversal mirror based on Da Vinci platform;reliability assessment of carbon sequestration market simulation;a customer requirements rating method based on fuzzy kano model;the state of solution for a nonlinear age-dependent population system based on weight;and research and implementation on the three-dimensional modeling of interior building component.

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Socially-Responsible Load Scheduling Algorithms for Sustainable Data Centers over Smart Grid

Socially-Responsible Load Scheduling Algorithms for Sustaina...

引用

IEEE 3rd international conference on Smart Grid Communications (SmartGridComm)

作者： He, Jian Deng, Xiang Wu, Dan Wen, Yonggang Wu, Di Sun Yat Sen Univ Dept Comp Sci Guangzhou 510275 Guangdong Peoples R China Guangdong Elect Power Design Inst Network & Informat Branch Guangzhou 510275 Guangdong Peoples R China Nanyang Technol Univ Sch Comp Engn Singapore 639798 Singapore

ISBN: (纸本)9781467309110;9781467309103

Power consumption of data centers accounts for a significant portion of operational cost for service providers. However, it is not sufficient to minimize electricity cost only. Instead, service providers should also consider the sustainability of data centers. In this paper, we investigate the problem of socially-responsible load scheduling for sustainable data centers in a smart grid environment. We formulate the joint optimization of electricity cost, performance cost and social cost into a min-cost network flow model, which takes the diversity of regional electricity prices, user request latency, usage of renewable energy into account. We further propose both offline and online load scheduling algorithms to achieve the optimality of the objective cost function. Finally, a series of simulation experiments are conducted to evaluate the effectiveness of our proposed algorithms.

关键词： computer centres minimisation power markets power system economics pricing scheduling smart power grids

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Ensemble detection of colorectal lesions for CT colonography

Ensemble detection of colorectal lesions for CT colonography

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ISBN: (纸本)9783642285561

Even though different computer-aided detection (CAD) systems for computed tomographic colonography (CTC) have similar overall detection accuracies, they are known to detect different types of lesions and false positives. We implemented an ensemble CAD scheme for merging the detection results of different CAD systems in CTC. After normalizing of the lesion-likelihood data between different systems, a Bayesian classifier was used for determining the final detections. For evaluation, we collected 218 abnormal patients with 263 lesions ≥6 mm. The detection accuracies of three CAD systems were compared with that of their ensemble CAD scheme by use of independent training and testing. The preliminary results indicate that the ensemble CAD scheme can yield a higher overall detection accuracy than can individual CAD systems. In particular, the ensemble scheme was able to detect flat lesions at high sensitivity without compromising a high polyp detection accuracy. © 2012 Springer-Verlag.

关键词： computer aided instruction

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