检索结果-内蒙古大学图书馆

您好，读者！请登录

内蒙古大学图书馆

首页
概况
党建
资源
服务
科研支持
- 论文收录引用证明
- 科技查新
知识产权
档案馆
帮助

咨询与建议

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

您的常用邮箱：*

您的手机号码：*

问题描述：

当前已输入0个字，您还可以输入200个字

全部搜索
期刊论文
图书
学位论文
标准
纸本馆藏
外文资源发现
数据库导航
超星发现

高级检索

时间限定

出版年份：

文献类型

图书期刊文献学位论文多媒体

馆藏选择

电子馆藏纸本馆藏

核心期刊

全部期刊 SCI 收录期刊 SSCI 收录期刊 EI 收录期刊 CSCD 收录期刊 CSSCI 收录期刊

语言

中文英文

文献类型

期刊文献图书学位论文标准纸本馆藏

帮助

文字说明：

T=题名（书名、题名），A=作者（责任者），K=主题词，P=出版物名称，PU=出版社名称，O=机构（作者单位、学位授予单位、专利申请人），L=中图分类号，C=学科分类号，U=全部字段，Y=年（出版发行年、学位年度、标准发布年）

检索规则说明：

AND代表“并且”；OR代表“或者”；NOT代表“不包含”；(注意必须大写,运算符两边需空一格)

检索范例：

范例一：(K=图书馆学 OR K=情报学) AND A=范并思 AND Y=1982-2016
范例二：P=计算机应用与软件 AND (U=C++ OR U=Basic) NOT K=Visual AND Y=2011-2016

分类表

所选分类

>> <<

限定检索结果

文献类型

22,831 篇 会议
9,109 篇 期刊文献
64 篇 学位论文
1 册 图书

馆藏范围

32,005 篇 电子文献
1 种 纸本馆藏

日期分布

学科分类号

16,009 篇 工学
- 10,099 篇 计算机科学与技术...
- 4,880 篇 电气工程
- 3,123 篇 软件工程
- 2,683 篇 信息与通信工程
- 1,951 篇 控制科学与工程
- 738 篇 机械工程
- 680 篇 电子科学与技术（可...
- 605 篇 航空宇航科学与技...
- 532 篇 仪器科学与技术
- 229 篇 交通运输工程
- 212 篇 材料科学与工程（可...
- 195 篇 化学工程与技术
- 171 篇 生物工程
- 153 篇 测绘科学与技术
- 135 篇 土木工程
- 134 篇 生物医学工程（可授...
- 133 篇 动力工程及工程热...
10,438 篇 理学
- 9,373 篇 数学
- 874 篇 物理学
- 766 篇 系统科学
- 738 篇 统计学（可授理学、...
- 265 篇 生物学
- 235 篇 化学
- 126 篇 地球物理学
2,489 篇 管理学
- 1,926 篇 管理科学与工程(可...
- 673 篇 工商管理
- 557 篇 图书情报与档案管...
418 篇 经济学
- 387 篇 应用经济学
211 篇 医学
- 175 篇 临床医学
180 篇 法学
- 167 篇 社会学
128 篇 文学
128 篇 农学
37 篇 教育学
27 篇 军事学
11 篇 艺术学
1 篇 哲学
1 篇 历史学

主题

32,005 篇 approximation al...
2,737 篇 algorithm design...
2,342 篇 optimization
2,306 篇 approximation me...
2,165 篇 heuristic algori...
1,423 篇 linear programmi...
1,409 篇 convergence
1,277 篇 computational mo...
1,216 篇 resource managem...
1,140 篇 signal processin...
957 篇 computer science
914 篇 polynomials
908 篇 clustering algor...
906 篇 complexity theor...
789 篇 mathematical mod...
745 篇 vectors
712 篇 programming
648 篇 estimation
614 篇 transportation
612 篇 training

机构

97 篇 univ maryland de...
70 篇 technion israel ...
55 篇 univ waterloo de...
49 篇 cornell univ dep...
43 篇 tsinghua univers...
39 篇 national institu...
39 篇 carnegie mellon ...
38 篇 iit dept comp sc...
35 篇 national mobile ...
34 篇 shandong univ sc...
32 篇 sichuan univ col...
31 篇 school of comput...
31 篇 nanjing univ sta...
29 篇 univ chinese aca...
29 篇 technion haifa
29 篇 princeton univ p...
29 篇 suny stony brook...
28 篇 epfl
28 篇 hong kong polyte...
28 篇 tel aviv univers...

作者

64 篇 woodruff david p...
64 篇 ravi r.
52 篇 kortsarz guy
45 篇 lee euiwoong
43 篇 levin asaf
41 篇 chan timothy m.
40 篇 kumar amit
37 篇 chen zhi-zhong
36 篇 friggstad zachar...
33 篇 kawarabayashi ke...
32 篇 manurangsi pasin
32 篇 chalermsook pari...
31 篇 wang lusheng
30 篇 gudmundsson joac...
29 篇 thai my t.
29 篇 williamson david...
29 篇 carmi paz
29 篇 zenklusen rico
28 篇 saha barna
27 篇 dinitz michael

语言

31,281 篇 英文
575 篇 其他
114 篇 中文
9 篇 日文
7 篇 俄文
4 篇 法文
2 篇 西班牙文
1 篇 德文
1 篇 葡萄牙文
1 篇 土耳其文

检索条件"主题词=approximation algorithms"

共 32005 条记录，以下是4931-4940 订阅

全选清除本页清除全部题录导出标记到"检索档案"

详细简洁

排序：

Application of Quantum Genetic algorithms to Connected and Electric Vehicles Energy Consumption Optimization

Application of Quantum Genetic Algorithms to Connected and E...

引用

IEEE International Forum on Research and Technologies for Society and Industry Leveraging a better tomorrow (RTSI)

作者： Giovanni Acampora Angela Chiatto Stefano De Luca Roberta Di Pace Chiara Fiori Enrico Landolfi Alfredo Massa Roberto Schiattarella Autilia Vitiello Department of Physics “Ettore Pancini” University of Naples Federico II Napoli Italy Depart. of Civil Engineering Sustainable Transportation Systems Engineering and Mobility Laboratory (ISTMoS) University of Salerno Fisciano SA Italy NetCom Group S.p.A. Napoli Italy QuantumNet srl Napoli Italy

ISBN: (数字)9798350362138

ISBN: (纸本)9798350362145

The signal settings design in urban networks requires the solution of complex optimization problems. In particular, the urban networks control when connected and electric vehicles are present has garnered significant i nterest d ue t o its notable advantages over networks with human-driven vehicles. These advantages include the potential for significant reductions in travel time, waiting time, energy consumption, and emissions. In cases where it is not possible to adopt deterministic algorithms to find e xact s olutions, t he l atter c an b e r eplaced w ith suitable approximate solutions provided by evolutionary algorithms. This paper focuses on enhancing these approximation methods by employing a hybrid quantum-classical multiobjective genetic algorithm to optimize the green signal timing for traffic flow regulation between two interconnected junctions. The algorithm, tested on IBM quantum computer simulators, has proven suitable for such optimization task. The experimental results show notable advantages of this technique over traditional evolutionary methods, suggesting its potential for more complex, real-world applications.

关键词： Energy consumption Electric potential Technological innovation Quantum computing Traffic control approximation algorithms Linear programming Regulation Optimization Genetic algorithms

来源：评论

学校读者我要写书评

暂无评论

A Modulation Agnostic Specific Emitter Identification Scheme Based on Expert Knowledge Informed Deep Learning

A Modulation Agnostic Specific Emitter Identification Scheme...

引用

International Conference on Communications, Circuits and Systems (ICCCAS)

作者： Yanghong Chen Xiaodong Xu Chinese Academy of Sciences Key Laboratory of Wireless-Optical Communications University of Science and Technology of China Heifei China

ISBN: (数字)9798350386271

ISBN: (纸本)9798350386288

The performance of deep learning (DL) based specific emitter identification (SEI) methods is prone to deteriorate in case of distribution shift between training data and testing data. The change of modulation scheme, which greatly worsens the performance of DL based emitter classifiers, is a probable circumstance of such distribution shift. In order to address the problem, this paper proposes to combine DL and expert knowledge of communication signal to enhance generalization ability against modulation change. Specifically, based on reconstructed received signals, a novel lightweight DL approach with sample selection process is derived from classical detection theory and distributions of sampling points on the IQ plane. Exten-sive numerical results demonstrate that the proposed approach achieves outstanding generalization ability when modulation schemes in testing data deviate from training data. Meanwhile, our lightweight model maintains similar performance to high-complexity DL model when distribution shift does not happen.

关键词： Deep learning Training Knowledge engineering Phase shift keying Modulation Training data approximation algorithms

来源：评论

学校读者我要写书评

暂无评论

Study on the Iterative Estimation and Compensation Algorithm for IQ Imbalance in Coherent Optical Communication Systems

Study on the Iterative Estimation and Compensation Algorithm...

引用

International Conference on Fuzzy Systems and Knowledge Discovery (FSKD)

作者： Changjun Huang Fengtao He Xi'an University of Posts and Telecommunications Xi'an China

ISBN: (数字)9798350356328

ISBN: (纸本)9798350356335

Coherent optical communication technology is a key technology for building high-speed optical fibre communication networks, while the amplitude and phase imbalance between the in-phase and quadrature (IQ) signals at the receiving end will lead to the degradation of the received signal quality and affect the performance of the communication system. In this thesis, a narrowband zero-intermediate frequency (ZIF) receiver IQ imbalance estimation and compensation algorithm is proposed with the research objective of designing IQ imbalance estimation and compensation algorithms for the 16 quadrature amplitude modulation (16QAM) signal in coherent optical communication systems that can be implemented in hardware circuits. The algorithm is based on the Gram-Schmidt orthogonalization procedure (GSOP) for approximate estimation of the IQ imbalance parameters and improves the estimation accuracy of the IQ imbalance parameters by means of iterative optimization. The IQ imbalance signal is effectively compensated by the inverse matrix of the IQ mismatch parameter matrix. Based on the estimation error of the IQ imbalance parameters, the bit error rate (BER) of the signal transmission at different signal to noise ratio (SNR), and the simulation results of the 16QAM constellation diagram before and after compensation, it is concluded that the iterative optimized algorithm based on GSOP reduces the complexity of hardware implementation and improves the efficiency and accuracy of the IQ imbalance parameters estimation effectively. The findings of this study hold practical engineering significance for estimating and calibrating IQ imbalance in coherent optical communication systems using high-order modulated signals through digital signal processing techniques.

关键词： Accuracy Circuits Bit error rate Estimation Signal processing algorithms approximation algorithms Optical fiber communication Iterative algorithms Hardware Signal to noise ratio

来源：评论

学校读者我要写书评

暂无评论

Chanced-Constrained Rolling-Horizon Optimization for the Green Hydrogen Microgrid System Operation

Chanced-Constrained Rolling-Horizon Optimization for the Gre...

引用

IEEE Region 10 International Conference TENCON

作者： Ha-yeong Cho Ho-jun Lee Jae-Hyung Lee Min-han Yoon dept. of Electric Engineering Kwangwoon University Seoul Korea Energy technology team Samsumg C&T City Korea

ISBN: (数字)9798350350821

ISBN: (纸本)9798350350838

In this paper, we introduce the problems with long-term period optimization of green hydrogen microgrid system operation and variability inherent in renewable energy. To solve the problems, we proposed a Rolling-Horizon Optimization(RHO) with Chanced-Constrained Optimization(CCO). The validity of our approach is confirmed by comparative analysis with conventional Mixed-Integer Linear Programming(MILP) scheduling by using real PV generation data.

关键词： Systems operation Green products Microgrids Green hydrogen Prediction algorithms approximation algorithms Scheduling Optimization IEEE Regions

来源：评论

学校读者我要写书评

暂无评论

Decentralized Cooperative Control for Multi-Reconfigurable Manipulator Based on Adaptive Dynamic Programing

Decentralized Cooperative Control for Multi-Reconfigurable M...

引用

Complex Systems and Intelligent Science (CSIS-IAC), International Annual Conference on

作者： Bo Dong Yu Cao Tianjiao An Xinyi He Hongbo Dong Bing Ma Department of Control Science and Engineering Changchun University of Technology Changchun China

ISBN: (数字)9798331504755

ISBN: (纸本)9798331504762

This paper proposes a decentralized cooperative control for multi-reconfigurable manipulator (MRM) based on Adaptive Dynamic Programing (ADP). The control method can achieve both motion path tracking and control the force between the manipulator and the controlled object. The dynamic model of reconfigurable manipulator and controlled object is established using the Newton-Euler algorithm and load distribution. When facing unknown terms in the model, radial basis function neural network (RBFNN) is used for approximation. By taking advantage of the ADP algorithm to obtain the optimal control strategy. The closed-loop MRM system is proved to be stable by using the Lyapunov theory. Finally, the effectiveness of the control method is verified through numerical simulation.

关键词： Adaptation models Tracking Heuristic algorithms Dynamics Optimal control Radial basis function networks approximation algorithms Numerical models Manipulator dynamics Load modeling

来源：评论

学校读者我要写书评

暂无评论

Real-Time UWB and IMU Fusion Positioning System for Urban Rail Transit with High Mobility

Real-Time UWB and IMU Fusion Positioning System for Urban Ra...

引用

IEEE Conference on Vehicular Technology (VTC)

作者： Rongjing Wang Hanli Jiang Qianqian Zhang Gang Liu Fei Richard Yu Key Laboratory of Information Coding and Transmission Southwest Jiaotong University Chengdu China Depart. of Systems and Computer Eng. Carleton University Ottawa ON Canada

ISBN: (数字)9798350387414

ISBN: (纸本)9798350387421

Urban rail transit is currently moving toward automated driving and mobile occlusion, which raises higher expectations for the train positioning system. Operating in diverse environments like open spaces and tunnels, a single positioning system falls short in meeting the accuracy and consistency requirements for train positioning along the entire rail line. In response to these stringent requirements, this research proposes an Error-State Kalman Filter (ESKF) based real-time fusion train positioning system for urban rail transit, incorporating Ultra-Wideband (UWB) and Inertial Measurement Unit (IMU) technologies. Through practical measurements, an UWB ranging error model is established. Based on this model, a simulation study is conducted on the proposed real-time fusion positioning algorithm under different UWB anchor deployment methods in the context of urban rail transit scenarios. The real-time performance and accuracy of the proposed algorithm were validated through in-tunnel testing.

关键词： Rails Vehicular and wireless technologies Accuracy Simulation Position measurement approximation algorithms Real-time systems

来源：评论

学校读者我要写书评

暂无评论

Discovering Denial Constraints in Dynamic Datasets

Discovering Denial Constraints in Dynamic Datasets

引用

International Conference on Data Engineering

作者： Eduardo H. M. Pena Fabio Porto Felix Naumann Federal University of Technology - Parana Brazil LNCC-DEXL Brazil Hasso Plattner Institute University of Potsdam Potsdam Germany

ISBN: (数字)9798350317152

ISBN: (纸本)9798350317169

Denial constraints (DCs) are data dependencies with high expressive power, offering great flexibility for modeling data quality rules. Specifying DCs manually is problematic, as the required domain expertise is expensive and scarce. Moreover, database updates can invalidate DCs thought to hold and simultaneously uncover new DCs. This fact leads to burdensome scenarios where experts must often revisit DC specifications. Several algorithms have been devised to discover DCs from data, among which only one considers DC discovery on data updates. However, that solution underperforms in many scenarios due to long runtime and excessive memory use. Also, it targets database inserts only, so no previous solution covers deletions. This paper proposes an efficient and flexible algorithm that covers the earlier limitations regarding performance and scope. The algorithm maintains small-footprint intermediate structures during database updates and a method that exploits the changes in this intermediate to update the DCs incrementally. The results of our extensive experimental evaluation show that our algorithm is orders of magnitude faster than the existing one, with much better scalability in the size of the data updates.

关键词： Runtime Databases Heuristic algorithms Scalability Data integrity Data engineering approximation algorithms

来源：评论

学校读者我要写书评

暂无评论

Centroid-Guided YOLO for Plant Stem Detection in Digital Agriculture

Centroid-Guided YOLO for Plant Stem Detection in Digital Agr...

引用

International Symposium on Instrumentation Systems, Circuits and Transducers (INSCIT)

作者： Rogério Ballestrin Alexandre Balbinot Vitor Camargo Nardelli Ivan Müller Graduate Program in Electrical Engineering Universidade Federal do Rio Grande do Sul (UFRGS) Instituto SENAI de Inovação em Sistemas de Sensoriamento Competence Center For Digital Agriculture

ISBN: (数字)9798350350869

ISBN: (纸本)9798350350876

This study focuses on the utilization of a YOLO (You Only Look Once)-based object detection approach, along with the development of a customized algorithm, to address the identification and localization of invasive plant stems within agricultural crops. The initial phase involved the creation of a dataset comprising 485 manually annotated images, sourced from three distinct data repositories. Subsequent to this, the YOLO model underwent training to accurately recognize the plants depicted in the images. Following the model training, an algorithm was devised that leverages the centroid of the G vector in the RGB image as the designated point of interest for precise stem localization. The algorithm's effectiveness was assessed utilizing key metrics such as mean absolute error (MAE) and root mean square error (RMSE). For images sized at 600×600 pixels, the resulting MAE and RMSE values were calculated at 34.4 pixels and 46.8 pixels respectively. Notably, these outcomes underscored the necessity for refining the detection process, particularly in instances involving plants with delicate branches, where differentiation between the branch and the image back drop proved challenging. In terms of practical application within agrochemical dispersion systems, it was discerned that dispersion takes place across an application area rather than a singular point. By incorporating the proposed algorithm in conjunction with a dispersion cone aperture measuring $100\times 100$ pixels, it was projected that the dispersion system could effectively cover approximately 92.4% of the existing plants. This algorithmic approach exhibits the potential to curtail agrochemical dispersion by a substantial factor of up to 36 times, yielding economic and sustainability advantages through the reduction of waste and environmental contamination.

关键词： YOLO Training Location awareness Transducers Plants (biology) Agrochemicals approximation algorithms Vectors Sustainable development Dispersion

来源：评论

学校读者我要写书评

暂无评论

Joint Beamforming Design for STAR-RIS Aided Cognitive Radio Systems

Joint Beamforming Design for STAR-RIS Aided Cognitive Radio ...

引用

IEEE Conference on Global Communications (GLOBECOM)

作者： Haochen Li Xidong Mu Yuanwei Liu Yue Chen Zhiwen Pan National Mobile Communications Research Laboratory Southeast University Nanjing China Queen’s University Belfast Belfast U.K The University of Hong Kong Hong Kong Queen Mary University of London London UK Purple Mountain Laboratories Nanjing China

ISBN: (数字)9798350351255

ISBN: (纸本)9798350351262

A novel multiple-input multiple-output (MIMO) cognitive radio (CR) system is proposed in this work. Specifically, the underly secondary network in the proposed CR system reuses the same frequency resources occupied by the primary network with the help of the simultaneously transmitting and reflecting reconfigurable intelligent surface (STAR-RIS). The secondary base station (SBS) beamformers and the STAR-RIS coefficients are jointly designed to maximize the sum rate of secondary users (SUs) considering the power limitation at the SBS, interference limitation at the primary users (PUs), and the coefficients constraint for the STAR-RIS. The block coordinate descent method is invoked to tackle the formulated optimization problem. In each iteration, the beamformers at the SBS are optimized by solving a quadratically constrained quadratic program problem, and the passive STAR beamforming problem is solved with the successive convex approximation-based algorithm. Simulation results show that the proposed STAR-RIS aided CR communication framework can significantly enhance the sum rate of the secondary system.

关键词： Array signal processing Simulation Stars Interference Reconfigurable intelligent surfaces approximation algorithms MIMO Cognitive radio Global communication Optimization

来源：评论

学校读者我要写书评

暂无评论

Assessment of the Impact of Date Production on Water Resources Using Remote Sensing Techniques, a Case Study for Madinah, Saudi Arabia

Assessment of the Impact of Date Production on Water Resourc...

引用

IEEE International Symposium on Geoscience and Remote Sensing (IGARSS)

作者： Abdulrahman Badaoud Claire Walsh Greg O’Dnnell Newcastle University Newcastle-Upon-Tyne United Kingdom King Abdulaziz University Jeddah Saudi Arabia

ISBN: (数字)9798350360325

ISBN: (纸本)9798350360332

In Saudi Arabia, the scarcity of surface water and limited renewable groundwater, heavily used in irrigation, raises concerns for future water management. Due to the limitations of in-situ observations, an accurate estimation of the condition of water resources poses a significant challenge. However, remote sensing platforms provide a mean to fill that gap by providing global estimates of several water components, such as, groundwater storage (GWS), evapotranspiration (ET) and precipitation. This study employs the Gravity Recovery and Climate Experiment (GRACE) satellite for estimating variations in GWS across Madinah. Surface Energy Balance Algorithm for Land (SEBAL) is also applied to estimate agricultural water consumption through ET, while the Integrated Multi-Satellite Retrievals for Global Precipitation Measurement (IMERG) algorithm is used to derive monthly precipitation values. Results show the average annual decline in GWS is -6.7 mm/year, alongside an average annual precipitation rate of approximately 73 mm, while ET in the irrigated area reaches 1715.5 mm/year. Initial findings highlight a downward trend in GWS results, emphasizing the influence of irrigation practices, as revealed by the ET results, and the impact of climate change, as indicated by low rainfall rates.

关键词： Irrigation Renewable energy sources Satellites Rain Land surface Production approximation algorithms

来源：评论

学校读者我要写书评

暂无评论

没有更多数据了...

全选清除本页清除全部题录导出标记到“检索档案”

共500页 << < 490 491 492 493 494 495 496 497 498 499 > >>

检索报告对象比较合并检索0

隐藏清空

合并搜索

回到顶部

执行限定条件

内容：

评分：

请选择保存的检索档案：

请选择收藏分类：

订阅名称：

通借通还

温馨提示：

图书名称：

借书校区：

取书校区：

手机号码：

邮箱地址：

一卡通帐号：

电话和邮箱必须正确填写，我们会与您联系确认。

联系人：

所在院系：

联系邮箱：

联系电话：

内蒙古自治区呼和浩特市赛罕区大学西街235号邮编: 010021

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：