检索结果-内蒙古大学图书馆

arXiv 2017年

作者： Jespersen, Sune Nørhøj Olesen, Jonas Lynge Ianuş, Andrada Shemesh, Noam MINDLab Department of Clinical Medicine Aarhus University Aarhus Denmark Department of Physics and Astronomy Aarhus University Aarhus Denmark Champalimaud Neuroscience Programme Lisbon Portugal Center for Medical Image Computing Department of Computer Science University College London London United Kingdom

Designing novel diffusion-weighted pulse sequences to probe tissue microstructure beyond the conventional Stejskal-Tanner family is currently of broad interest. One such technique, multidimensional diffusion MRI, has been recently proposed to afford model-free decomposition of diffusion signal kurtosis into terms originating from either ensemble variance of isotropic diffusivity or microscopic diffusion anisotropy. This ability rests on the assumption that diffusion can be described as a sum of multiple Gaussian compartments, but this is often not strictly fulfilled. The effects of nongaussian diffusion on single shot isotropic diffusion sequences were first considered in detail by de Swiet and Mitra in 1996. They showed theoretically that anisotropic compartments lead to anisotropic time dependence of the diffusion tensors, which causes the measured isotropic diffusivity to depend on gradient frame orientation. Here we show how such deviations from the multiple Gaussian compartments assumption conflates orientation dispersion with ensemble variance in isotropic diffusivity. Second, we consider additional contributions to the apparent variance in isotropic diffusivity arising due to intracompartmental kurtosis. These will likewise depend on gradient frame orientation. We illustrate the potential importance of these confounds with analytical expressions, numerical simulations in simple model geometries, and microimaging experiments in fixed spinal cord using isotropic diffusion encoding waveforms with 7.5 ms duration and 3000 mT/m maximum amplitude. Copyright © 2017, The Authors. All rights reserved.

关键词： Higher order statistics

来源：评论

学校读者我要写书评

暂无评论

Solar Absorber Gel: Solar Absorber Gel: Localized Macro‐Nano Heat Channeling for Efficient Plasmonic Au Nanoflowers Photothermic Vaporization and Triboelectric Generation (Adv. Energy Mater. 25/2018)

引用

Advanced Energy Materials 2018年第25期8卷

作者： Minmin Gao Connor Kangnuo Peh Huy Thong Phan Liangliang Zhu Ghim Wei Ho Department of Electrical and Computer Engineering National University of Singapore 4 Engineering Drive 3 Singapore 117583 Singapore Engineering Science Programme National University of Singapore 9 Engineering Drive 1 Singapore 117575 Singapore Institute of Materials Research and Engineering A*STAR (Agency for Science Technology and Research) 2 Fusionopolis Way Singapore 138634 Singapore

来源：评论

学校读者我要写书评

暂无评论

Solar‐Energy Capture: Visible‐to‐NIR Photon Harvesting: Progressive Engineering of Catalysts for Solar‐Powered Environmental Purification and Fuel Production (Adv. Mater. 47/2018)

引用

Advanced Materials 2018年第47期30卷

作者： Min‐Quan Yang Minmin Gao Minghui Hong Ghim Wei Ho Department of Electrical and Computer Engineering National University of Singapore 4 Engineering Drive 3 117583 Singapore Singapore Engineering Science Programme National University of Singapore 9 Engineering Drive 1 117575 Singapore Singapore Institute of Materials Research and Engineering A*STAR (Agency for Science Technology and Research) 3 Research Link 117602 Singapore Singapore

来源：评论

学校读者我要写书评

暂无评论

Unveiling the role of Co-O-Mg bond in magnetic anisotropy of Pt/Co/MgO using atomically controlled deposition and in situ electrical measurement

引用

Physical Review B 2017年第9期95卷 094417-094417页

作者： Yumeng Yang Jiaren Yuan Long Qi Ying Wang Yanjun Xu Xiaowei Wang Yuanping Feng Baoxi Xu Lei Shen Yihong Wu Department of Electrical and Computer Engineering National University of Singapore 4 Engineering Drive 3 Singapore 117583 Singapore College of Science Nanjing University of Aeronautics and Astronautics Nanjing 210016 People's Republic of China Department of Physics Centre for Advanced Two-dimensional Materials National University of Singapore Singapore 117542 Singapore Data Storage Institute Agency for Science Technology and Research (A*STAR) 2 Fusionopolis Way 08-01 Innovis Singapore 138634 Singapore Department of Mechanical Engineering Engineering Science Programme Faculty of Engineering National University of Singapore Singapore 117575 Singapore

Despite the crucial role of interfacial perpendicular magnetic anisotropy in a Co(Fe)/MgO-based magnetic tunnel junction, the underlying mechanism is still being debated. Here, we report an anatomical study of the oxygen and Mg effect on Pt/Co bilayers through repeated in situ anomalous Hall effect measurements, controlled oxygen exposure, and Mg deposition in an ultrahigh vacuum system. We found that chemisorbed oxygen not only quenches the effective magnetic moment of the Co surface layer, but also softens its magnetic anisotropy. However, a subsequent Mg dusting on the oxygen preexposed Pt/Co surface can recover the magnetic anisotropy. The ab initio calculations on the exchange splitting and orbital hybridization near the Fermi level give a clear physical explanation of the experimental observations. Our results suggest that the Co(Fe)-O-M bond plays a more important role than the widely perceived Co(Fe)-O bond does in realizing interfacial perpendicular magnetic anisotropy in Co(Fe)/MgO heterostructures.

关键词： Magnetic anisotropy Spintronics Ab initio calculations

来源：评论

学校读者我要写书评

暂无评论

Optimising observing strategies for monitoring animals using drone-mounted thermal infrared cameras

arXiv

引用

arXiv 2018年

作者： Burke, Claire Rashman, Maisie Wich, Serge Symons, Andy Theron, Cobus Longmore, Steve Astrophysics Research Institute Liverpool John Moorse University Brownlow Hill LiverpoolL3 5RF United Kingdom School of Natural Sciences and Psychology Liverpool John Moores University James Parsons Building Byrom Street LiverpoolL33AF United Kingdom Institute for Biodiversity and Ecosystem Dynamics University of Amsterdam Sciencepark 904 Amsterdam1098 Netherlands Department of Computer Science James Parsons Building Byrom Street LiverpoolL3 3AF United Kingdom Drylands Conservation Programme Endangered Wildlife Trust Private Bag X11 Modderfontein Johannesburg1645 South Africa

The proliferation of relatively affordable off-the-shelf drones offers great opportunities for wildlife monitoring and conservation. Similarly the recent reduction in cost of thermal infrared cameras also offers new promise in this field, as they have the advantage over conventional RGB cameras of being able to distinguish animals based on their body heat and being able to detect animals at night. However, the use of drone-mounted thermal infrared cameras comes with several technical challenges. In this paper we address some of these issues, namely thermal contrast problems due to heat from the ground, absorption and emission of thermal infrared radiation by the atmosphere, obscuration by vegetation, and optimizing the flying height of drones for a best balance between covering a large area and being able to accurately image and identify animals of interest. We demonstrate the application of these methods with a case study using field data, and make the first ever detection of the critically endangered riverine rabbit (Bunolagus monticularis) in thermal infrared data. We provide a web-tool so that the community can easily apply these techniques to other studies (http://***/~aricburk/uav_calc/). Copyright © 2018, The Authors. All rights reserved.

关键词： Infrared radiation

来源：评论

学校读者我要写书评

暂无评论

Author Correction: Genomic footprints of activated telomere maintenance mechanisms in cancer (Dec, 10.1038/s41467-019-13824-9, 2022)

引用

NATURE COMMUNICATIONS 2022年第1期13卷 1-1页

作者： Sieverling, Lina Hong, Chen Koser, Sandra D. Ginsbach, Philip Kleinheinz, Kortine Hutter, Barbara Braun, Delia M. Cortes-Ciriano, Isidro Xi, Ruibin Kabbe, Rolf Park, Peter J. Eils, Roland Schlesner, Matthias Brors, Benedikt Rippe, Karsten Jones, David T. W. Feuerbach, Lars Division of Applied Bioinformatics German Cancer Research Center (DKFZ) 69120 Heidelberg Germany Faculty of Biosciences Heidelberg University 69120 Heidelberg Germany Division of Applied Bioinformatics German Cancer Research Center (DKFZ) Heidelberg Germany Faculty of Biosciences Heidelberg University Heidelberg Germany Division of Theoretical Bioinformatics German Cancer Research Center (DKFZ) 69120 Heidelberg Germany Department for Bioinformatics and Functional Genomics Institute for Pharmacy and Molecular Biotechnology (IPMB) and BioQuant 69120 Heidelberg Germany Division of Theoretical Bioinformatics German Cancer Research Center (DKFZ) Heidelberg Germany Institute of Pharmacy and Molecular Biotechnology and BioQuant Heidelberg University Heidelberg Germany German Cancer Consortium (DKTK) Heidelberg Germany National Center for Tumor Diseases (NCT) Heidelberg Heidelberg Germany Heidelberg Center for Personalized Oncology (DKFZ-HIPO) German Cancer Research Center (DKFZ) Heidelberg Germany German Cancer Consortium (DKTK) German Cancer Research Center (DKFZ) Heidelberg Germany Division of Chromatin Networks German Cancer Research Center (DKFZ) and BioQuant 69120 Heidelberg Germany Department of Biomedical Informatics Harvard Medical School Boston Massachusetts 02115 USA Department of Chemistry Centre for Molecular Science Informatics University of Cambridge Cambridge CB2 1EW UK Ludwig Center at Harvard Medical School Boston Massachusetts 02115 USA Department of Biomedical Informatics Harvard Medical School Boston MA USA Department of Chemistry Centre for Molecular Science Informatics University of Cambridge Cambridge UK Ludwig Center at Harvard Medical School Boston MA USA School of Mathematical Sciences and Center for Statistical Science Peking University Beijing 100871 China Heidelberg University Heidelberg Germany New BIH Digital Health Center Berlin Institute of Health (BIH) and Charité - Universitätsmedizin Berlin Berlin Germany Bioi

来源：评论

学校读者我要写书评

暂无评论

Electrocatalysis: Topotactic Engineering of Ultrathin 2D Nonlayered Nickel Selenides for Full Water Electrolysis (Adv. Energy Mater. 14/2018)

引用

Advanced Energy Materials 2018年第14期8卷

作者： Hao Wu Xin Lu Gengfeng Zheng Ghim Wei Ho Department of Electrical and Computer Engineering National University of Singapore 4 Engineering Drive 3 Singapore 117583 Singapore Lab of Advanced Materials Department of Chemistry Fudan University Shanghai 200433 China Engineering Science Programme National University of Singapore 9 Engineering Drive 1 Singapore 117575 Singapore Institute of Materials Research and Engineering A*STAR (Agency for Science Technology and Research) 3 Research Link Singapore 117602 Singapore

来源：评论

学校读者我要写书评

暂无评论

Metacognitive learning approach for online tool condition monitoring

arXiv

引用

arXiv 2017年

作者： Pratama, Mahardhika Dimla, Eric Lai, Chow Yin Lughofer, Edwin School of Computer Science and Engineering Nanyang Technological University Singapore Mechanical Engineering Programme Area Faculty of Engineering Universiti Teknologi Brunei Jalan Tungku Link Gadong Bandar Seri BegawanBE1410 Brunei School of Engineering RMIT University CarltonVIC3053 Australia Department of Knowledge-Based Mathematical Systems Johannes Kepler University Linz Austria

As manufacturing processes become increasingly automated, so should tool condition monitoring (TCM) as it is impractical to have human workers monitor the state of the tools continuously. Tool condition is crucial to ensure the good quality of products - Worn tools affect not only the surface quality but also the dimensional accuracy, which means higher reject rate of the products. Therefore, there is an urgent need to identify tool failures before it occurs on the fly. While various versions of intelligent tool condition monitoring have been proposed, most of them suffer from a cognitive nature of traditional machine learning algorithms. They focus on the how-to-learn process without paying attention to other two crucial issues - what-to-learn, and when-to-learn. The what-to-learn and the when-to-learn provide self-regulating mechanisms to select the training samples and to determine time instants to train a model. A novel tool condition monitoring approach based on a psychologically plausible concept, namely the metacognitive scaffolding theory, is proposed and built upon a recently published algorithm - recurrent classifier (rClass). The learning process consists of three phases: what-to-learn, how-to-learn, when-to-learn and makes use of a generalized recurrent network structure as a cognitive component. Experimental studies with real-world manufacturing data streams were conducted where rClass demonstrated the highest accuracy while retaining the lowest complexity over its counterparts. Copyright © 2017, The Authors. All rights reserved.

关键词： Learning algorithms

来源：评论

学校读者我要写书评

暂无评论

Knowledge Representation for Argumentation in Agent-Oriented Programming Languages

Knowledge Representation for Argumentation in Agent-Oriented...

引用

Brazilian Conference on Intelligent Systems (BRACIS)

作者： Alison R. Panisson Rafael H. Bordini Postgraduate Programme in Computer Science Pontifical Catholic University of Rio Grande do SuI (PUCRS) Porto Alegre Brazil

ISBN: (纸本)9781509035670

Argumentation in multi-agent systems provides both a mechanism for agent reasoning under uncertainty and conflicting information as well as for communication in a more elaborate way, allowing agents to understand each other through the exchange of additional information when compared to other forms of agent communication. Even though argumentation techniques can play an important role in multi-agent systems, little research has been carried out on the issues in integrating argumentation techniques and agent-oriented programming languages, which would allow the development of practical applications taking advantage of such combined techniques. In this work, we present an argumentation framework developed on the basis of an agent-oriented programming language. We cover mainly the practical aspects of such integration, focusing on the knowledge representation expressivity resulting from it. Our approach allows the development of multi-agent applications where agents are able to use arguments in their decision-making processes as well as for communication. The framework has been successfully used as part of the development of a healthcare multi-agent prototype application.

关键词： Cognition computer languages Knowledge representation Semantics Multi-agent systems Context Uncertainty

来源：评论

学校读者我要写书评

暂无评论

Argumentation-Based Reasoning Using Preferences over Sources of Information 16

Argumentation-Based Reasoning Using Preferences over Sources...

引用

International Conference on Autonomous Agents and Multiagent Systems

作者： Victor S. Melo Alison R. Panisson Rafael H. Bordini Pontifical Catholic University of Rio Grande do Sul (PUCRS) Postgraduate Programme in Computer Science - School of Informatics (FACIN)

ISBN: (纸本)9781510855083

Argumentation-based reasoning plays an important role in agent reasoning and communication. In this work, we extend an argumentation-based reasoning mechanism to take into account preferences over arguments supporting contrary conclusions. Such preferences come from elements that are present or can be more easily obtained in the context of practical multi-agent programming platforms, such as multiple sources from which the information (used to construct the arguments) was acquired, as well as varying degrees of trust on them. Further, we introduce different agent profiles by varying the way certain operators are applied over the various information sources. Unlike previous approaches, our approach accounts for multiple sources for a single piece of information and is based on an argumentation-based reasoning mechanism implemented on a multi-agent platform.

关键词： Argumentation-Based Reasoning Trust Trust Reasoning Preferences Nonprofit Organizations information trust Information source Disputes

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：