检索结果-内蒙古大学图书馆

作者： Zhang, Haoxu Qiu, Chenchen Wang, Chao Wei, Bin Yu, Zhibin Zheng, Haiyong Li, Juan Department of Electronic Engineering College of Information Science and Engineering Ocean University of China Qingdao China Shandong Key Laboratory of Digital Medicine and Computer Assisted Surgery The Affiliated Hospital of Qingdao University Qingdao China Department of Mathematics School of Science and Engineering University of Dundee Dundee United Kingdom College of Mechanical and Electrical Engineering Qingdao Agricultural University Qingdao China

This paper proposes a new method for generating 3D objects based on generative adversarial networks (GANs). Recently, GANs have been used in 3D object generation, but it is still very challenging to generate high-quality 3D objects because of the complex data distribution over 3D objects. In this paper, we propose a system based on GAN that makes the generated objects more realistic. We use multiple generators and discriminators to enhance the ability of the model for learning complex distributions. Such a stacked structure can be considered as a coarse-to-fine or low-to-high–resolution mechanism. We employ the spectral normalization technology to control the Lipschitz constant of the discriminators by literally constraining the spectral norm of each layer to get a more stable training process. In this way, the proposed model can generate realistic and high-quality 3D objects. Moreover, our system can also recover incomplete 3D objects into complete 3D objects. Experiments demonstrate that our model performs better in the quality of the generated objects than the baselines. © 2019 John Wiley & Sons, Ltd.

关键词： Generative adversarial networks

来源：评论

学校读者我要写书评

暂无评论

Stimulated Generation of Indistinguishable Single Photons from a Quantum Ladder System

Stimulated Generation of Indistinguishable Single Photons fr...

引用

2023 Conference on Lasers and Electro-Optics, CLEO 2023

作者： Sbresny, Friedrich Hanschke, Lukas Schöll, Eva Rauhaus, William Scaparra, Bianca Boos, Katarina Casalengua, Eduardo Zubizarreta Riedl, Hubert del Valle, Elena Finley, Jonathan J. Jöns, Klaus D. Müller, Kai Walter Schottky Institut Department of Electrical and Computer Engineering and MCQST Technische Universitat Miinchen Garching85748 Germany Department of Physics Paderborn University Paderborn33098 Germany Faculty of Science and Engineering University of Wolverhampton WolverhamptonWV1 1LY United Kingdom Departamento de Fisica Teórica de la Materia Condensada andlFIMAC Universidad Autónoma de Madrid Madrid28049 Spain Walter Schottky Institut Department of Physics MCQST Technische Universität München Garching85748 Germany Institute for Advanced Study Technische Universität München Garching85748 Germany

Single photons play a key role for applications in photonic quantum technologies. Here we propose, model and demonstrate a scheme that enables the generation of high purity indistinguishable single photons from a quan... 详细信息

ISBN: (纸本)9781957171258

关键词： Ladders

来源：评论

学校读者我要写书评

暂无评论

mPose: Environment- and subject-agnostic 3D skeleton posture reconstruction leveraging a single mmWave device

引用

Smart Health 2022年 23卷

作者： Shi, Cong Lu, Li Liu, Jian Wang, Yan Chen, Yingying Yu, Jiadi WINLAB Department of Electrical and Computer Engineering Rutgers University New Brunswick NJ United States Key Laboratory of Blockchain and Cyberspace Governance of Zhejiang Province Zhejiang University Hangzhou China Min H. Kao Department of Electrical Engineering and Computer Science University of Tennessee Knoxville TN United States Department of Computer and Information Sciences Temple University Philadelphia PA United States Department of Computer Science and Engineering Shanghai Jiao Tong University Shanghai China

Human skeleton posture reconstruction is an essential component for human–computer interactions (HCI) in various application domains. Traditional approaches usually rely on either cameras or on-body sensors, which induce privacy concerns or inconvenient practical setups. To address these practical concerns, this paper proposes a low-cost contactless skeleton posture reconstruction system, mPose, which can reconstruct a user's 3D skeleton postures using a single mmWave device. mPose does not require the user to wear any sensors and can enable a broad range of emerging mobile applications (e.g., VR gaming and pervasive user input) via mmWave-5G ready Internet of Things (IoT) devices. Particularly, the system extracts multi-dimensional spatial information from mmWave signals which characterizes the skeleton postures in a 3D space. To mitigate the impacts of environmental changes, mPose dynamically detects the user location and extracts spatial features from the mmWave signals reflected only from the user. Furthermore, we develop a deep regression method with a domain discriminator to learn a mapping between the spatial features and the joint coordinates of human body while removing subject-specific characteristics, realizing robust posture reconstruction across users. Extensive experiments, involving 17 representative body postures, 7 subjects, and 3 indoor environments, show that mPose outperforms contemporary state-of-the-art RF-based solutions with a lower average joint error of only ∼30 mm, while achieving transferability across environments and subjects at the same time. © 2021 Elsevier Inc.

关键词： 3D skeleton posture reconstruction MmWave

来源：评论

学校读者我要写书评

暂无评论

Absolute Localization in Feature-Poor Industrial Confined Spaces

Absolute Localization in Feature-Poor Industrial Confined Sp...

引用

IEEE International Workshop on Safety, Security, and Rescue Robotics (SSRR)

作者： Rune Y. Brogaard Robert A. Hewitt Sarah Etter Arash Kalantari Evangelos Boukas Faculty of Electrical Engineering Technical University of Denmark Kgs Lyngby Denmark Mobility and Robotic Systems Section NASA Jet Propulsion Laboratory California Institute of Technology Pasadena CA USA Department of Computer Science University of Texas Austin TX USA

Autonomous inspection of dark, confined, and feature-poor spaces requires robotic platforms to utilize accurate and reliable localization systems for safe and reliable operation. This paper presents an absolute localization system for highly feature-poor spaces, using visual inertial odometry and GPU-based point cloud registrations for limited field-of-view sensors. The extracted structural elements from sensor scans, along side IMU measurements, are used to limit the search area for the GPU-based point cloud registrations. We employ Stein-ICP which is an uncertainty aware variant of ICP. The 3D registrations are then fused with a visual-inertial odometry estimate in an Extended Kalman Filter to provide a fast and accurate absolute pose estimate. The proposed localization system is tested in both a simulated environment and in a mock-up model of a chemical distillation column - both highly feature-poor areas.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Reverse-Bias Resilience of Monolithic Perovskite/Silicon Tandem Solar Cells

Reverse-Bias Resilience of Monolithic Perovskite/Silicon Tan...

引用

IEEE Conference Photovoltaic Specialists (PVSC)

作者： Zhaojian Xu Helen Bristow Maxime Babics Badri Vishal Erkan Aydin Randi Azmi Esma Ugur Bumin K. Yildirim Jiang Liu Ross A. Kerner Stefaan De Wolf Barry P. Rand Department of Electrical and Computer Engineering Princeton University Princeton NJ USA Physical Science and Engineering Division (PSE) KAUST Solar Center (KSC) King Abdullah University of Science and Technology (KAUST) Thuwal Kingdom of Saudi Arabia National Renewable Energy Laboratory Chemistry and Nanoscience Center Golden CO USA Andlinger Center for Energy and the Environment Princeton University Princeton NJ USA

ISBN: (数字)9781665464260

ISBN: (纸本)9781665475822

Metal halide perovskites have rapidly enabled a range of high-performance photovoltaic technologies. However, catastrophic failure under reverse voltage bias hinders their commercialization. In this work, we demonstrate that by employing a monolithic perovskite/silicon tandem structure, the perovskite subcell can be effectively protected by the silicon subcell under reverse bias, owing to the low reverse-bias diode current of the silicon subcell. As a result, the tested perovskite/silicon tandem devices show superior reverse-bias resilience compared to perovskite single-junction devices in both long-term reverse voltage biasing tests at the single-cell level and partial shading tests at the module level. These results highlight that, compared to other perovskite technologies, monolithic perovskite/silicon tandems are at a higher technology readiness level in terms of tackling the reverse-bias and partial shading challenge, which is a considerable advantage towards commercialization.

关键词： Photovoltaic systems Photovoltaic cells Metals Voltage Perovskites Silicon Commercialization Resilience

来源：评论

学校读者我要写书评

暂无评论

Machine Learning and IoT based Performance Improvement of Energy Efficiency in Smart Buildings

Machine Learning and IoT based Performance Improvement of En...

引用

Sustainable Computing and Data Communication Systems (ICSCDS), International Conference on

作者： Sowmya Jagadeesan C.N. Ravi M. Sujatha S Sree Southry J Sundararajan Ch. Venkata Krishna Reddy Departnent of BCA and IT iNurture Education Solutions Vels Institute of Science Technology and Advanced Studies Chennai Tamil Nadu India Department of Computer Science and Engineering CMR Engineering college Hyderabad Telangana India Department of Electrical and Electronics Engineering Easwari Engineering College Ramapuram Chennai Tamil Nadu India Department of Electronics and Communication Engineering Sona College of Technology Salem Tamil Nadu India Department of Electronics and Communication NPR College of Enggineering and Technology Dindugul Tamil Nadu India Department of Electrical and Electronics Engineering Chaitanya Bharathi Institute of Technology Hyderabad Telangana India

The energy plays a prominent role in the development of a country’s economic conditions. This helps to increase the overall performance index of a country. Thus a continuous energy system is needed to develop a country’s performance index. Thus to have an advancement in the energy management system, an improved system called smart grid is implemented. This helps in efficient usage of energy management through meeting the demand side managing in the smart buildings. This assistances to decrease the additional procedure of energy consumption through optimization techniques such as genetic algorithm used in smart buildings. This is done with the machine learning through optimization algorithm. This helps to proper scheduling of appliances. This is done through the priority scheduling. The overall performance is done through the internet of things with sensors. The sensors helps in the process of sensing the external physical parameters such as temperature, humidity, moisture, heat and light. This helps to enhance the energy efficiency in the smart buildings through the machine learning and IoT.

关键词： Temperature sensors Smart buildings Processor scheduling Machine learning Energy efficiency Performance analysis Smart grids

来源：评论

学校读者我要写书评

暂无评论

Local negative permittivity and topological phase transition in polar skyrmions (vol 20, pg 194, 2021)

引用

NATURE MATERIALS 2021年第6期20卷 905-905页

作者： Das, S. Hong, Z. Stoica, V. A. Goncalves, M. A. P. Shao, Y. T. Parsonnet, E. Marksz, E. J. Saremi, S. McCarter, M. R. Reynoso, A. Long, C. J. Hagerstrom, A. M. Meyers, D. Ravi, V. Prasad, B. Zhou, H. Zhang, Z. Wen, H. Gomez-Ortiz, F. Garcia-Fernandez, P. Bokor, J. iniguez, J. Freeland, J. W. Orloff, N. D. Junquera, J. Chen, L. Q. Salahuddin, S. Muller, D. A. Martin, L. W. Ramesh, R. Department of Materials Science and Engineering University of California Berkeley CA USA Department of Physics University of California Berkeley CA USA Materials Sciences Division Lawrence Berkeley National Laboratory Berkeley CA USA Department of Materials Science and Engineering The Pennsylvania State University University Park PA USA Department of Mechanical Engineering Carnegie Mellon University Pittsburgh PA USA Materials Research and Technology Department Luxembourg Institute of Science and Technology (LIST) Esch/Alzette Luxemburg Departamento de Ciencias de la Tierra y Física de la Materia Condensada Universidad de Cantabria Cantabria Campus Internacional Santander Spain Physics and Materials Science Research Unit University of Luxembourg Belvaux Luxembourg School of Applied and Engineering Physics Cornell University Ithaca NY USA Kavli Institute at Cornell for Nanoscale Science Ithaca NY USA National Institute of Standards and Technology Boulder CO USA Advanced Photon Source Argonne National Laboratory Argonne IL USA Department of Electrical Engineering and Computer Sciences University of California Berkeley CA USA

A Correction to this paper has been published: https://***/10.1038/s41563-021-00962-z.

关键词： Titanium compounds

来源：评论

学校读者我要写书评

暂无评论

Interpretable inverse-designed cavity for spontaneous photon-pair generation

Interpretable inverse-designed cavity for spontaneous photon...

引用

Frontiers in Optics + Laser science 2023, FiO, LS 203: Part of Frontiers in Optics + Laser science 2023

作者： Jia, Zhetao Qarony, Wayesh Park, Jagang Hooten, Sean Wen, Difan Zhiyenbayev, Yertay Seclì, Matteo Redjem, Walid Dhuey, Scott Schwartzberg, Adam Yablonovitch, Eli Kanté, Boubacar Department of Electrical Engineering and Computer Sciences University of California Berkeley BerkeleyCA94720 United States Hewlett Packard Labs Hewlett Packard Enterprise 820 N. McCarthy Blvd. MilpitasCA95035 United States Applied Science and Technology Graduate Group University of California at Berkeley BerkeleyCA94720 United States Molecular Foundry Lawrence Berkeley National Laboratory BerkeleyCA94720 United States Materials Sciences Division Lawrence Berkeley National Laboratory BerkeleyCA94720 United States

We demonstrate the first inverse-designed device for enhancing photon-pair generation rate in silicon photonics with compact footprint. The proposed inverse-design approach can be generalized to other nonlinear photon... 详细信息

ISBN: (纸本)9781957171296

关键词： Four wave mixing Grating coupler Nonlinear effects Optical confinement Scanning electron microscopy Silicon photonics

来源：评论

学校读者我要写书评

暂无评论

Design of Energy Modulation Massive SIMO Transceivers via Machine Learning

引用

Journal of Communications and Information Networks 2020年第3期5卷 358-368页

作者： Muhang Lan Jianhao Huang Han Zhang Chuan Huang National Key Laboratory of Science and Technology on Communications University of Electronic Science and Technology of ChinaChengdu 611731China The Future Network of Intelligence Institute and the School of Science and Engineering the Chinese University of Hong KongShenzhen 518172China Department of Electrical and Computer Engineering University of CaliforniaDavis 95616USA

This paper considers a massive single-input multiple-output(SIMO)system,where multiple singleantenna transmitters simultaneously communicate with a receiver equipped with a large number of *** from the conventional noncoherent transceivers which require a certain level of the statistical information on the channel fading,we propose a joint transceiver design method based on machine learning,requiring a limited number of channel *** the proposed method,the multiple transmitters,the channel,and the receiver are represented with a deep neural network(NN),and an autoencoder is adopted to minimize the end-to-end transmission error ***,the relationship between the number of training samples and the transmission error probability is analyzed based on the confidence interval *** results show that the proposed NN-based transceiver achieves lower transmission error probability in typical scenarios,and is more robust against the channel parameters variation compared with the existing methods.

关键词： neural network(NN) energy modulation massive single-input multiple-output(SIMO) joint transceiver design confidence interval

来源：评论

学校读者我要写书评

暂无评论

Topological Microlaser with A non-Hermitian Topological Bulk

arXiv

引用

arXiv 2023年

作者： Li, Zhitong Luo, Xi-Wang Lin, Dayang Gharajeh, Abouzar Moon, Jiyoung Hou, Junpeng Zhang, Chuanwei Gu, Qing Department of Electrical and Computer Engineering The University of Texas at Dallas RichardsonTX75080 United States State Key Laboratory of Information Photonics and Optical Communications School of Science Beijing University of Posts and Telecommunications Beijing100876 China Department of Physics The University of Texas at Dallas RichardsonTX75080 United States CAS Key Laboratory of Quantum Information University of Science and Technology of China Hefei230026 China Department of Electrical and Computer Engineering North Carolina State University RaleighNC27695 United States Department of Physics North Carolina State University RaleighNC27695 United States

Bulk-edge correspondence, with quantized bulk topology leading to protected edge states, is a hallmark of topological states of matter and has been experimentally observed in electronic, atomic, photonic, and many other systems. While bulk-edge correspondence has been extensively studied in Hermitian systems, a non-Hermitian bulk could drastically modify the Hermitian topological band theory due to the interplay between non-Hermiticity and topology;and its effect on bulk-edge correspondence is still an ongoing pursuit. Importantly, including non-Hermicity can significantly expand the horizon of topological states of matter and lead to a plethora of unique properties and device applications, an example of which is a topological laser. However, the bulk topology, and thereby the bulk-edge correspondence, in existing topological edge-mode lasers is not well defined. Here, we propose and experimentally probe topological edge-mode lasing with a well-defined non-Hermitian bulk topology in a one-dimensional (1D) array of coupled ring resonators. By modeling the Hamiltonian with an additional degree of freedom (referred to as synthetic dimension), our 1D structure is equivalent to a 2D non-Hermitian Chern insulator with precise mapping. Our work may open a new pathway for probing non-Hermitian topological effects and exploring non-Hermitian topological device applications. Copyright © 2023, The Authors. All rights reserved.

关键词： Topology

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：