检索结果-内蒙古大学图书馆

arXiv 2019年

作者： Hu, Chenghao Jiang, Jingyan Wang, Zhi Department of Computer Science and Technology Tsinghua University College of Computer Science and Technology Jilin University Graduate School at Shenzhen Tsinghua University Peng Cheng Laboratory

The emerging concern about data privacy and security has motivated the proposal of federated learning, which allows nodes to only synchronize the locally-trained models instead their own original data. Conventional federated learning architecture, inherited from the parameter server design, relies on highly centralized topologies and the assumption of large nodes-to-server bandwidths. However, in real-world federated learning scenarios the network capacities between nodes are highly uniformly distributed and smaller than that in a datacenter. It is of great challenges for conventional federated learning approaches to efficiently utilize network capacities between nodes. In this paper, we propose a model segment level decentralized federated learning to tackle this problem. In particular, we propose a segmented gossip approach, which not only makes full utilization of node-to-node bandwidth, but also has good training convergence. The experimental results show that even the training time can be highly reduced as compared to centralized federated learning. Copyright © 2019, The Authors. All rights reserved.

关键词： Bandwidth

来源：评论

学校读者我要写书评

暂无评论

Proximity perception in human-centered robotics: A survey on sensing systems and applications

arXiv

引用

arXiv 2021年

作者： Navarro, Stefan Escaida Mühlbacher-Karrer, Stephan Alagi, Hosam Zangl, Hubert Koyama, Keisuke Hein, Björn Duriez, Christian Smith, Joshua R. Inria Lille-Nord Europe France JOANNEUM RESEARCH ROBOTICS Institute for Robotics and Mechatronics Klagenfurt Austria Karlsruhe Germany Karlsruhe Institute of Technology IAR - IPR Karlsruhe Germany University of Applied Sciences Karlsruhe Germany Alpen-Adria-Universität Klagenfurt Institute of Smart System Technologies Sensors and Actuators Klagenfurt Austria Osaka University Department of Systems Innovation Graduate School of Engineering Science Osaka Japan University of Washington Allen School of Computer Science and Engineering Department of Electrical Engineering Seattle United States

—Proximity perception is a technology that has the potential to play an essential role in the future of robotics. It can fulfill the promise of safe, robust, and autonomous systems in industry and everyday life, alongside humans, as well as in remote locations in space and underwater. In this survey paper, we cover the developments of this field from the early days up to the present, with a focus on human-centered robotics. Here, proximity sensors are typically deployed in two scenarios: first, on the exterior of manipulator arms to support safety and interaction functionality, and second, on the inside of grippers or hands to support grasping and exploration. Starting from this observation, we propose a categorization for the approaches found in the literature. To provide a basis for understanding these approaches, we devote effort to present the technologies and different measuring principles that were developed over the years, also providing a summary in form of a table. Then, we show the diversity of applications that have been presented in the literature. Finally, we give an overview of the most important trends that will shape the future of this domain. © 2021, CC BY.

关键词： Surveys

来源：评论

学校读者我要写书评

暂无评论

Unc-51-like kinase(ULK)complex-independent autophagy induced by hypoxia

引用

Protein & Cell 2019年第5期10卷 376-381页

作者： Yan Feng Helen H.Kang Pui-Mun Wong Minghui Gao Ping Wang Xuejun Jiang Shanghai Tenth People's Hospital of Tongji University School of MedicineTongji UniversityShanghai 200072China Cell Biology Program Memorial Sloan-Kettering Cancer CenterNew YorkNY 10065USA Immunology and Microbial Pathogenesis Program Weill Cornell Graduate School of Medical SciencesNew YorkNY 10065USA Human Genetics and Embryology Laboratory Agency for ScienceTechnology and ResearchInstitute of Medical BiologySingapore 138632Singapore HIT Center for Life Sciences The School of Life Sciences and TechnologyHarbin Institute of TechnologyHarbin 150001China

Dear Editor,Macroautophagy(referred to as autophagy herein)is an evolutionarily con served,lysosomal degradatio n process by which cells rid themselves of aggregated proteins and damaged organelles(He and Klionsky,2009).This process involves a finely orchestrated molecular pathway comprising a plethora of ATG proteins essential for autophagosome *** mammalian Unc-51-like kinase(ULK)complex plays an essential role to initiate canonical autophagy pathway by relaying upstream nutrient and stress signals to downstream autophagy machinery(Mizushima,2010;Wong et al.,2013).

关键词： Unc-51-like kinase ULK hypoxia

来源：评论

学校读者我要写书评

暂无评论

Developing an improved risk-adjusted net present value technology valuation model for the biopharmaceutical industry

引用

Journal of Open Innovation: technology, Market, and Complexity 2019年第3期5卷 45页

作者： Woo, Jonghak Kim, Eungdo Sung, Tae-Eung Lee, Jongtaik Shin, Kwangsoo Lee, Jeonghee Graduate School of Health Science Business Convergence College of Medicine Chungbuk National University Cheongju 28644 South Korea Computer and Telecommunications Engineering Yonsei University Seoul 26493 South Korea Korea Institute of Science and Technology Information (KISTI) Daejeon 02456 South Korea Technical Valuation Digital Science Co. Ltd. Seoul 06132 South Korea

The financial valuation of a drug that is still under development is required for various purposes. The risk-adjusted net present value (r-NPV) method, which recently emerged in the biotech industry, uses the development attrition rate as a discount factor to reflect risk during each development phase. The r-NPV method was developed to overcome the disadvantages of the prevailing discounted cash flow and real options methods and considers drug type, as well as the stage of development in its approach. Using this method, the current study examines technology values in the biopharmaceutical industry and matches the clinical development periods and success rates of these new drugs by analyzing datasets from *** and MedTrack DB. It thus provides support for an empirical valuation model for experts in the field. Notably, there is limited research on the attrition rate and development period of new substance drugs and the research results are not consistently presented. In addition to new substance drugs, further research is necessary to deepen understanding of the attrition rate and development period of biologically-based drugs because of their inherent physical and developmental differences. Similarly, research on performance specifics within drug class models would enable refinement of the model. © 2019 by the authors.

关键词： Clinical trials development period Discounted cash flow Likelihood of approval Net present value Possibility of success Risk adjusted valuation

来源：评论

学校读者我要写书评

暂无评论

Routing Protocol Using Virtual Nodes for Traffic Information Collection in Information Centric Vehicular Ad-hoc Networks

Routing Protocol Using Virtual Nodes for Traffic Information...

引用

International Conference on Mobile Computing and Ubiquitous Networking (ICMU)

作者： Toshiya Miyazaki Hiroshi Shigeno Tomoyuki Yashiro Graduate School of Science and Technology Keio University Kanagawa Japan Faculty of Information and Computer Science Chiba Institute of Technology Chiba Japan

ISBN: (数字)9784907626419

ISBN: (纸本)9781728142265

Dynamic Route Guidance (DRG) systems determine the traveling routes of vehicles and solve traffic problems in urban areas. Ad-hoc network composed of vehicles, called VANET is being conducted and VANET-based DRG systems are proposed. In VANET-based DRG systems, a dynamic topology on VANET is one of the biggest challenges. Packet loss prevents decision of proper traveling routes. Therefore, this paper adapts the ICN concept to VANET, called IC-VANET. In IC-VANET, each vehicle acquires traffic information by multi-hop request / response type communication, and it caches contents. Then, we propose a traffic information collection and routing protocols using Virtual Nodes (VNRP) where packets are relayed via Virtual Nodes preferentially for improving data acquisition rate and communication overhead. Virtual Node (VN) is a logical node that is maintained at a specific area considering the vehicle density by inter-vehicle communication with surrounding vehicles, and it collects traffic information. We compared the proposal method with the conventional VANET method by simulation and evaluated the performance.

关键词： Routing protocols Vehicular ad hoc networks Relays Roads Vehicle dynamics Topology

来源：评论

学校读者我要写书评

暂无评论

Thermal Conductivity of BAs under Pressure

arXiv

引用

arXiv 2021年

作者： Hou, Songrui Sun, Bo Tian, Fei Cai, Qingan Xu, Youming Wang, Shanmin Chen, Xi Ren, Zhifeng Li, Chen Wilson, Richard B. Materials Science and Engineering University of California RiversideCA92521 United States Tsinghua Shenzhen International Graduate School Tsinghua University Guangdong Shenzhen518055 China School of Materials Science and Engineering Sun Yat-sen University Guangdong Guangzhou510275 China Department of Physics Texas Center for Superconductivity University of Houston HoustonTX77204 United States Department of Mechanical Engineering University of California RiversideCA92521 United States Department of Electrical and Computer Engineering University of California RiversideCA92521 United States Department of Physics Southern University of Science and Technology Guangdong Shenzhen518055 China

The thermal conductivity of boron arsenide (BAs) is believed to be influenced by phonon scattering selection rules due to its special phonon dispersion. Compression of BAs leads to significant changes in phonon dispersion, which allows for a test of first principles theories for how phonon dispersion affects three- and four-phonon scattering rates. This study reports the thermal conductivity of BAs from 0 to 30 GPa. Thermal conductivity vs. pressure of BAs is measured by time-domain thermoreflectance with a diamond anvil cell. In stark contrast to what is typical for nonmetallic crystals, BAs is observed to have a pressure independent thermal conductivity below 30 GPa. The thermal conductivity of nonmetallic crystals typically increases upon compression. The unusual pressure independence of BAs’s thermal conductivity shows the important relationship between phonon dispersion properties and three- and four-phonon scattering rates. © 2021, CC BY.

关键词： Thermal conductivity

来源：评论

学校读者我要写书评

暂无评论

Thermal conductivity of BAs under pressure

Research Square

引用

Research Square 2021年

作者： Hou, Songrui Sun, Bo Tian, Fei Cai, Qingan Xu, Youming Wang, Shanmin Peng, Wanyue Chen, Xi Ren, Zhifeng Li, Chen Wilson, Richard Materials Science and Engineering University of California RiversideCA92521 United States Tsinghua Shenzhen International Graduate School Tsinghua University Guangdong Shenzhen518055 China School of Materials Science and Engineering Sun Yat-sen University Guangdong Guangzhou510275 China Department of Physics Texas Center for Superconductivity University of Houston HoustonTX77204 United States Department of Mechanical Engineering University of California RiversideCA92521 United States Department of Electrical and Computer Engineering University of California RiversideCA92521 United States Department of Physics Southern University of Science and Technology Guangdong Shenzhen518055 China

Boron arsenide (BAs) is an ultrahigh-thermal-conductivity material with special phonon-phonon scattering behaviors. At ambient pressure, the bunching of acoustic phonon branches in BAs is believed to result in a small phase space for three-phonon scattering. Density functional theory predicts that this acoustic phonon bunching effect is sensitive to pressure and leads to an unusual pressure dependence of thermal conductivity. To explore this physics, we measure the thermal conductivity of BAs from 0 to 25 GPa using time-domain thermoreflectance in a diamond anvil cell. We characterized two BAs samples with ambient thermal conductivities of 350 and 480 W m-1 K-1. Our experiments show that the thermal conductivity of both samples depends weakly on pressure from 0 to 25 GPa. We attribute the weak pressure dependence of the thermal conductivity of BAs to the weak pressure dependence of total phonon-phonon scattering rates. Our experimental results are consistent with DFT predictions that three-phonon scattering rates increase from 0 to 25 GPa, while four-phonon scattering rates decrease. © 2021, CC BY.

关键词： Thermal conductivity

来源：评论

学校读者我要写书评

暂无评论

Generalized-Gaussian-distribution-based independent deeply learned matrix analysis for multichannel audio source separation 48

Generalized-Gaussian-distribution-based independent deeply l...

引用

48th International Congress and Exhibition on Noise Control Engineering, INTER-NOISE 2019 MADRID

作者： Makishima, Naoki Takamune, Norihiro Kitamura, Daichi Saruwatari, Hiroshi Takahashi, Yu Kondo, Kazunobu Nakajima, Hiroaki Graduate School of Information Science and Technology University of Tokyo Tokyo113-8656 Japan Department of Electrical and Computer Engineering National Institute of Technology Kagawa College Kagawa761-8058 Japan Yamaha Corporation Shizuoka430-8650 Japan

ISBN: (纸本)9788487985317

In this paper, generalization of a statistical generative model in independent deeply learned matrix analysis (IDLMA) is addressed to achieve higher audio source separation performance. Audio source separation is the task of extracting source signals from multichannel mixtures observed using a microphone array, which can be applied to many systems including noise reduction, speech recognition, and music analysis. IDLMA is a state-of-the-art separation method exploiting statistical independence between sources and deep neural network (DNN) inference of source models, where a time-frequency-varying complex Gaussian distribution is assumed as a source generative model. This paper presents the generalization of the source generative model in IDLMA: a time-frequency-varying complex generalized Gaussian distribution (GGD) is exploited as a new source generative model in IDLMA. From theoretical and experimental results, both numerical stability in parameter estimation and improved separation performance are confirmed. © INTER-NOISE 2019 MADRID - 48th International Congress and Exhibition on Noise Control Engineering. All Rights Reserved.

关键词： Deep neural networks

来源：评论

学校读者我要写书评

暂无评论

Testing Effectiveness of a Teaching Tool That Uses a Non-Contact Sensor for Preventing Lower Back Pain 8

Testing Effectiveness of a Teaching Tool That Uses a Non-Con...

引用

8th IIAI International Congress on Advanced Applied Informatics, IIAI-AAI 2019

作者： Sumai, Sakiko Sawano, Hiroaki Suzumura, Hatsuko Morishita, Tomomi Haruta, Kayo Suwa, Mieko Nakamura, Minako Higashiyama, Shintarou Murayama, Yukari Ishii, Norio Hayashi, Masaya Minako Nakamura Shintarou Higashiyama Yukari Murayama Faculty of Nursing Shubun University Aichi Japan School of Nursing Ichinomiya Kenshin College Aichi Japan Graduate School of Business Administration and Computer Science Aichi Institute of Technology Aichi Japan

ISBN: (纸本)9781728126272

Focusing on the most common cause of lower back pain in nursing behavior, which is the forward bending or half-sitting posture, we developed a non-contact sensor that uses sound to alert people when they are sitting at a dangerous anterior angle (30 degrees). In the present study, we installed a non-contact sensor for self-practice for bedmaking skills. A skill test was conducted by dividing subjects into a group that used the teaching tool and one that did not, so that the assessment results could demonstrate their effectiveness. The assessment results did not indicate a significant difference between the group that used the teaching tool and the group that did not. However, approximately 70% of the group that used the teaching tool reported being able to 'have a wide base support area,' 'lower the center of gravity,' and that 'the centroidal line goes through the base of support,' which are the most important factors to prevent lower back pain. Therefore, installing a non-contact sensor for self-practice may be an effective teaching tool for raising awareness of postures that prevent lower back pain. © 2019 IEEE.

关键词： Nursing

来源：评论

学校读者我要写书评

暂无评论

Evaluation of Pollution Sources of Zinc in Tokyo Bay Based on Zinc Isotope Ratio in Sediment Core

引用

Journal of Geoscience and Environment Protection 2019年第8期7卷 141-154页

作者： Masahiro Sakata Shohei Okuizumi Asami Suzuki Mashio Takeshi Ohno Shuhei Sakata Graduate Program in Environmental Health Sciences University of Shizuoka Shizuoka Japan Graduate School of Natural Science and Technology Kanazawa University Kanazawa Japan Department of Chemistry Faculty of Science Gakushuin University Tokyo Japan

This study evaluated the sources of Zn pollution in Tokyo Bay, Japan, on the basis of δ66Zn in a sediment core. The Zn concentration in sediments in the 1980s-2000s was considerably higher than the background concentration, suggesting that there remain important sources of Zn in the bay. The δ66Zn (+0.51‰) of anthropogenic Zn estimated in the core was significantly higher than those (approximately –0.1‰ - +0.2‰) of treated water from sewage treatment plants and vehicle-related sources. A large number of electroplating plants are located in Tokyo areas. It is assumed that Zn in effluents from electroplating operations is isotopically heavier owing to a negative isotopic effect on Zn electroplating. This tends to support the hypothesis that river bottom sediments, which were contaminated with Zn in the untreated effluents from electroplating plants in the past, are the principal sources of anthropogenic Zn in Tokyo Bay in the 1980s-2000s.

关键词： Zinc Pollution Sources Sediment Core Zinc Isotope Ratio Tokyo Bay

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：