检索结果-内蒙古大学图书馆

23rd International Joint Conference on Artificial Intelligence, IJCAI 2013

作者： Hussein, Mohamed E. Torki, Marwan Gowayyed, Mohammad A. El-Saban, Motaz Department of Computer and Systems Engineering Alexandria University Alexandria Egypt Microsoft Research Advanced Technology Lab Cairo Cairo Egypt

ISBN: (纸本)9781577356332

Human action recognition from videos is a challenging machine vision task with multiple important application domains, such as humanrobot/ machine interaction, interactive entertainment, multimedia information retrieval, and surveillance. In this paper, we present a novel approach to human action recognition from 3D skeleton sequences extracted from depth data. We use the covariance matrix for skeleton joint locations over time as a discriminative descriptor for a sequence. To encode the relationship between joint movement and time, we deploy multiple covariance matrices over sub-sequences in a hierarchical fashion. The descriptor has a fixed length that is independent from the length of the described sequence. Our experiments show that using the covariance descriptor with an off-the-shelf classification algorithm outperforms the state of the art in action recognition on multiple datasets, captured either via a Kinect-type sensor or a sophisticated motion capture system. We also include an evaluation on a novel large dataset using our own annotation.

关键词： Covariance matrix

来源：评论

学校读者我要写书评

暂无评论

An optimal bandwidth allocation strategy for the delivery of compressed prerecorded video

引用

MULTIMEDIA systems 1997年第5期5卷 297-309页

作者： Feng, WC Jahanian, F Sechrest, S Software Systems Research Lab Department of Electrical Engineering and Computer Science University of Michigan Ann Arbor Michigan USA e-mail: {wuchifarnamsechrest}@eecs.umich.edu. US

The transportation of prerecorded, compressed video data without loss of picture quality requires the network and video servers to support large fluctuations in bandwidth requirements. Fully utilizing a client-side buffer for smoothing bandwidth requirements can limit the fluctuations in bandwidth required from the underlying network and the video-on-demand servers. This paper shows that, for a fixed-size buffer constraint, the critical bandwidth allocation technique results in plans for continuous playback of stored video that have (1) the minimum number of bandwidth increases, (2) the smallest peak bandwidth requirements, and (3) the largest minimum bandwidth requirements. In addition, this paper introduces an optimal bandwidth allocation algorithm which, in addition to the three critical bandwidth allocation properties, minimizes the total number of bandwidth changes necessary for continuous playback. A comparison between the optimal bandwidth allocation algorithm and other critical bandwidth-based algorithms using 17 full-length movie videos and 3 seminar videos is also presented.

关键词： video-on-demand bandwidth allocation MPEG video compression smoothing

来源：评论

学校读者我要写书评

暂无评论

An Efficient Successive Cancellation Polar Decoder Based on New Folding Approaches 12

An Efficient Successive Cancellation Polar Decoder Based on ...

引用

2017 IEEE 12th International Conference on ASIC

作者： Xiao Liang Yechao She Harish Vangala Xiaohu You Chuan Zhang Emanuele Viterbo Lab of Efficient Architectures for Digital-communication and Signal-processing(LEADS) National Mobile Communications Research Laboratory Southeast University Department of Electronic and Computer Engineering HKUST Department of Electrical and Computer Systems Engineering Monash University

ISBN: (纸本)9781509066261;9781509066254

In this paper,an efficient successive cancellation(SC) polar decoder based on new folding approaches is *** main approach of this paper is called k-level decomposition with 2 *** k and p,the derived architecture can have a very low processing complexity with proper combinations of decomposition method and folding *** to state-of-the-art designs,hardware utilization ratio(HUR) of processing elements can be drastically improved with small latency ***,the memory complexity remains ***,decomposition and folding operations can also be applied to a family of hybrid polar *** validate efficiency of these approaches,two folded SC decoders with N = 64 and 1024 respectively are implemented with Altera Stratix V *** two demos require only 68.3% and 39.1%ALMs,compared to the non-decomposed SC decoder.

关键词： Polar code SC decoder k-level decomposition folding technique VLSI implementation

来源：评论

学校读者我要写书评

暂无评论

Neighborhood Modularization‑based Artificial Bee Colony Algorithm for Disassembly Planning with Operation Attributes

引用

Chinese Journal of Mechanical engineering 2022年第6期35卷 165-177页

作者： Hongfei Guo Linsheng Zhang Yaping Ren Leilei Meng Zhongwei Zhou Jianqing Li GBA and B&R International Joint Research Center for Smart Logistics School of Intelligent Systems Science and EngineeringInstitute of Physical InternetJinan University(Zhuhai Campus)Zhuhai 519070China School of Computer Science Liaocheng UniversityLiaocheng 252059China Faculty of Information Technology Macao University of Science and TechnologyMacao 999078China

The recycling and remanufacturing of end-of-life products are significant for environmental protection and resource *** is an essential process of remanufacturing end-of-life *** disassembly plans help improve disassembly efficiency and reduce disassembly *** paper studies a disassembly planning problem with operation attributes,in which an integrated decision of the disassembly sequence,disassembly directions,and disassembly tools are ***,a mathematical model is formulated with the objective of minimizing the penalty cost caused by the changing of operation ***,a neighborhood modularization-based artificial bee colony algorithm is developed,which contains a modular optimized ***,two case studies with different scales and complexities are used to verify the performance of the proposed approach,and experimental results show that the proposed algorithm outperforms the two existing methods within an acceptable computational time.

关键词： End-of-life products Disassembly planning Artificial bee colony Neighborhood modularization

来源：评论

学校读者我要写书评

暂无评论

Discriminative learning of additive noise and channel distortions for robust speech recognition

Discriminative learning of additive noise and channel distor...

引用

1998 23rd IEEE International Conference on Acoustics, Speech and Signal Processing, ICASSP 1998

作者： Han, Jiqing Han, Munsung Park, Gyu-Bong Park, Jeongue Gao, Wen Hwang, Doosung Language Understanding Lab. Systems Engineering Research Institute ETRI Korea Republic of Department of Computer Science and Engineering Harbin Institute of Technology China

ISBN: (纸本)0780344286

Learning the influence of additive noise and channel distortions from training data is an effective approach for robust speech recognition. Most of the previous methods are based on maximum likelihood estimation criterion. We propose a new method of discriminative learning environmental parameters, which is based on the minimum classification error (MCE) criterion. By using a simple classifier defined by ourselves and the generalized probabilistic descent (GPD) algorithm, we iteratively learn environmental parameters. After getting the parameters, we estimate the clean speech features from the observed speech features and then use the estimation of the clean speech features to train or test the back-end HMM classifier. The best error rate reduction of 32.1% is obtained, tested on a Korean 18 isolated confusion words task, relative to the conventional HMM system. © 1998 IEEE.

关键词： Maximum likelihood estimation

来源：评论

学校读者我要写书评

暂无评论

Relative Mel-Frequency Cepstral Coefficients Compensation for Robust Telephone Speech Recognition 5

Relative Mel-Frequency Cepstral Coefficients Compensation fo...

引用

5th European Conference on Speech Communication and Technology, EUROSPEECH 1997

作者： Han, Jiqing Han, Munsung Park, Gyu-Bong Park, Jeongue Gao, Wen Language Understanding Lab. Systems Engineering Research Institute ETRI Korea Republic of Department of Computer Science and Engineering Harbin Institute of Technology China

It is a crucial factor to find the robust and simple computation methods for the actual application of telephone speech recognition. In this paper, we propose a new channel compensation method, which uses a RASTA-like band-pass filter on the mel-frequency cepstral coefficients for robust telephone speech recognition. It is shown from the experiments that the proposed method, comparing with the RASTA processing, reduces the computational complexity without losing performance, and it is also better than CMS and two level CMS on the performance. We also verify that it is an effective approach to suppress very low modulation frequencies for robust telephone speech recognition. © 1997 5th European Conference on Speech Communication and Technology, EUROSPEECH 1997. All rights reserved.

关键词： Bandpass filters

来源：评论

学校读者我要写书评

暂无评论

Moss-Based Biotechnological Air Purification Control System

Moss-Based Biotechnological Air Purification Control System

引用

2022 International Conference on Electrical and Computing Technologies and Applications, ICECTA 2022

作者： Kusdavletov, Sanzhar Sapargali, Abdulla Yedilkhan, Didar Yermekov, Altynbek Astana IT University Department of Intelligent Systems and Cybersecurity Astana Kazakhstan Astana IT University Department of Computer Engineering Astana Kazakhstan Astana IT University 'Smart City' Research Center Astana Kazakhstan

ISBN: (数字)9781665456005

ISBN: (纸本)9781665456005

Nowadays, air pollution is one of the acute problems that humanity faces as the world further develops and more technology comes into use. Pollution is produced both outside and inside buildings mostly from the machinery we use for convenience. In this paper, a non-standard approach is being explored to solve the problem at hand. Since excessive ventilation can lead to more pollution and infection, and is also a loss of energy, it was decided to focus not on ventilation, but on air purification. To purify the air, a filter created by living plants has been used. For the project, we chose moss, which is unpretentious and small, unlike trees and bushes. Due to the autonomy and scale, our solution is easy to use and brings enormous ecological and social impact. During the research, a biotechnological prototype is created, where it is possible to observe and control moss growth and its productivity. For the algorithm to work correctly, data about the environment is required. For this reason, in this paper, we have described not only the modeling of the system we suggest but also the process of collecting information from the biofilter. By reducing pollution, we will shortly save and stabilize the ecological situation. In this project, the effective biofilter is developed based on various solutions from biology, control engineering, as well as internet of things fields. © 2022 IEEE.

关键词： Control systems

来源：评论

学校读者我要写书评

暂无评论

The Impact of Weather Conditions on the Harmonic Behaviour of Grid-Connected Photovoltaic systems 13

The Impact of Weather Conditions on the Harmonic Behaviour o...

引用

13th International Conference on Power, Energy and Electrical engineering, CPEEE 2023

作者： Althobiti, Ahmad Awadh Almalki, Faisal Alhussainy, Abdullah Ali Alghamdi, Sultan Rawa, Muhyaddin Al-Turki, Yusuf A. King Abdulaziz University K. A. Care Energy Research and Innovation Center Department of Electrical and Computer Engineering Jeddah21589 Saudi Arabia King Abdulaziz University Department of Electrical and Computer Engineering Jeddah Saudi Arabia King Abdulaziz University Smart Grids Research Group Center of Research Excellence in Renewable Energy and Power Systems Department of Electrical and Computer Engineering Jeddah21589 Saudi Arabia King Abdulaziz University K. A. Care Energy Research and Innovation Center Smart Grids Research Group Center of Research Excellence in Renewable Energy and Power Systems Department of Electrical and Computer Engineering Jeddah21589 Saudi Arabia

ISBN: (纸本)9781665490146

The utilization of solar photovoltaic systems has seen a marked uptick in recent years. research efforts have been geared towards improving efficiency and reducing the cost of solar PV plants. In light of concerns over the potential consequences of high penetration of PV systems, governments have been implementing renewable energy programs. This study presents a time-domain model for analyzing harmonic effects in utility-scale PV plants under varying levels of irradiance and temperature conditions. © 2023 IEEE.

关键词： Harmonic analysis

来源：评论

学校读者我要写书评

暂无评论

Modeling of a frequency comb source for terahertz generation 3

Modeling of a frequency comb source for terahertz generation

引用

3rd Conference on Millimeter Wave and Terahertz Technologies, MMWaTT 2015

作者： Bahramimanesh, Mohammad Hossein Nooramin, Amir Saman Shahabadi, Mahmoud Photonics Research Lab. Center of Excellence for Applied Electromagnetics Systems School of Electrical and Computer Engineering College of Engineering University of Tehran Tehran Iran

ISBN: (纸本)9781479965915

The main focus of this paper is modeling of terahertz-wave generation by means of an optical frequency comb spectrum. To model frequency comb generation by the parametric frequency conversion, we propose a system composed of several coupled nonlinear resonators. Nonlinearity of the coupled resonators and their coupling coefficients play an important role in achieving a specific frequency comb *** demonstrate that the impact of the source amplitude on the formation of frequency comb can be described by the proposed model. © 2014 IEEE.

关键词： Terahertz waves

来源：评论

学校读者我要写书评

暂无评论

Power Quality of DQ Synchronous Frame for Wind Connected to Grid 13

Power Quality of DQ Synchronous Frame for Wind Connected to ...

引用

13th International Conference on Power, Energy and Electrical engineering, CPEEE 2023

作者： Alarbidi, Omar Mater F Awaji, Hassan Hadi H Althobiti, Ahmad Awadh Alhussainy, Abdullah Ali Alghamdi, Sultan Ajour, M.N. Rawa, Muhyaddin Abusorrah, A.M. King Abdulaziz University Department of Electrical and Computer Engineering Jeddah21589 Saudi Arabia K. A. Care Energy Research and Innovation Center King Abdulaziz University Department of Electrical and Computer Engineering Jeddah21589 Saudi Arabia King Abdulaziz University K. A. Care Energy Research and Innovation Center Smart Grids Research Group Center of Research Excellence in Renewable Energy and Power Systems Department of Electrical and Computer Engineering Jeddah21589 Saudi Arabia King Abdulaziz University Smart Grids Research Group Center of Research Excellence in Renewable Energy and Power Systems Department of Electrical and Computer Engineering 21589 Jeddah Saudi Arabia

ISBN: (纸本)9781665490146

A wind turbine in wind energy conversion systems (WECS) captures a portion of the wind energy. It converts it to mechanical energy through a dynamic interaction with the electrical generator, transforming this mechanical energy into electrical energy. Therefore, wind turbine dynamics are crucial when researching and developing the whole WECS. It is highly desirable to study the behavior of wind energy and monitor the impact on power quality and short circuit level. In this study, a wind turbine using a permanent magnet synchronous machine (PMSM) simulation system is designed, simulated, cases study is discussed. The PMSM is torque-controlled using the field orientation method. A three-phase IGBT inverter with closed loop current PI-controllers powers the PMSM. The study and control system are executed on MATlab SIMULINK. © 2023 IEEE.

关键词： Wind turbines

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：