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

1,104 篇 期刊文献
1,050 篇 会议
8 册 图书

馆藏范围

2,162 篇 电子文献
0 种 纸本馆藏

日期分布

学科分类号

1,214 篇 工学
- 421 篇 计算机科学与技术...
- 318 篇 软件工程
- 268 篇 电子科学与技术（可...
- 264 篇 信息与通信工程
- 182 篇 控制科学与工程
- 175 篇 电气工程
- 126 篇 材料科学与工程（可...
- 121 篇 化学工程与技术
- 103 篇 动力工程及工程热...
- 97 篇 机械工程
- 97 篇 光学工程
- 83 篇 仪器科学与技术
- 83 篇 生物工程
- 57 篇 生物医学工程（可授...
- 52 篇 力学（可授工学、理...
- 41 篇 交通运输工程
- 35 篇 环境科学与工程（可...
808 篇 理学
- 380 篇 数学
- 285 篇 物理学
- 161 篇 统计学（可授理学、...
- 130 篇 系统科学
- 124 篇 生物学
- 105 篇 化学
191 篇 管理学
- 130 篇 管理科学与工程(可...
- 57 篇 工商管理
- 49 篇 图书情报与档案管...
82 篇 医学
- 54 篇 临床医学
- 39 篇 基础医学(可授医学...
- 31 篇 公共卫生与预防医...
35 篇 经济学
- 35 篇 应用经济学
32 篇 农学
24 篇 法学
9 篇 文学
7 篇 教育学
3 篇 军事学
2 篇 艺术学
1 篇 历史学

主题

70 篇 signal to noise ...
54 篇 wireless communi...
47 篇 receivers
42 篇 fading
42 篇 relays
41 篇 interference
41 篇 optimization
39 篇 mathematical mod...
34 篇 integral equatio...
33 篇 machine learning
32 篇 cognitive radio
31 篇 antennas
31 篇 accuracy
29 篇 silicon
28 篇 computational mo...
27 篇 resource managem...
26 篇 sensors
25 篇 radio frequency
24 篇 metamaterials
24 篇 bit error rate

机构

53 篇 computer electri...
53 篇 computer electri...
50 篇 computer electri...
40 篇 computer electri...
31 篇 computer electri...
30 篇 division of comp...
27 篇 computer electri...
25 篇 division of comp...
25 篇 mathematical and...
24 篇 computer electri...
22 篇 electrical engin...
22 篇 king abdullah ii...
20 篇 school of comput...
19 篇 king abdullah un...
19 篇 physical science...
18 篇 applied mathemat...
17 篇 computer electri...
16 篇 computer electri...
16 篇 king abdullah un...
16 篇 division of comp...

作者

215 篇 mohamed-slim alo...
91 篇 alouini mohamed-...
56 篇 hakan bagci
48 篇 atif shamim
45 篇 jasra ajay
36 篇 taous-meriem lal...
35 篇 zouheir rezki
32 篇 mohammad s. obai...
31 篇 tareq y. al-naff...
29 篇 al-naffouri tare...
29 篇 obaidat mohammad...
29 篇 ferkan yilmaz
26 篇 boon s. ooi
25 篇 nazek el-atab
24 篇 khaled n. salama
24 篇 xin gao
22 篇 ying wu
22 篇 moshkov mikhail
22 篇 muhammad m. huss...
22 篇 tien khee ng

语言

2,038 篇 英文
72 篇 其他
49 篇 中文
2 篇 德文
1 篇 法文

检索条件"机构=Electrical and Computer Engineering Program King Abdullah University of Science and Technology"

共 2162 条记录，以下是1991-2000 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：

An Active 3-Dimensional Localization Scheme for Femtocell Subscribers Using E-UTRAN

An Active 3-Dimensional Localization Scheme for Femtocell Su...

引用

IEEE Conference on Vehicular technology (VTC)

作者： Aquil Mirza Mohammed Zeeshan Shakir Muhammad Mohamed-Slim Alouini Electrical Engineering Program King Abdullah University of Science and Technology (KAUST) Thuwal Makkah Province Kingdom of Saudi Arabia

Femtocells provide an efficient solution to overcome the indoor coverage problems and also to deal with the traffic within Macro cells. The possibility of localizing femtocell subscriber stations based on the timing ranging advance parameter (TRAP), obtained from E-UTRAN (Evolved UMTS Terrestrial Radio Access Network), within the network signal internals is challenging and is studied throughout in this paper. The principle approach to localization based on Euclidean distances from multiple base stations is *** investigate the specifications of the timing parameters or TRAP used for air interface of 4G network as they relate to calculating the subscriber distances. computer simulation is used to demonstrate the localization accuracy using multiple base station networks when estimating likely locations of femtocell subscribers stations on a two-dimensional coordinate mapping system. However, we further extend our simulations to demonstrate expected location accuracy of subscriber stations, for multiple base station networks, on a three dimensional coordinate mapping scheme. The possibility of of error-fixes shows eight times greater accuracy than in previous results is expected to achieve by applying timing advance techniques to Global System for Mobile communications networks, by using a two-dimensional coordinate mapping scheme. We later compare our study with the effect of global positioning system (GPS) by using a three-dimensional coordinate mapping scheme, which is predicted to give an 72.4 cms accuracy of subscriber station location.

关键词： Timing Standards Base stations Accuracy Approximation methods Equations Mathematical model

来源：评论

学校读者我要写书评

暂无评论

Minimizing symbol error rate for cognitive relaying with opportunistic access

Minimizing symbol error rate for cognitive relaying with opp...

引用

International Conference on Cognitive Radio Oriented Wireless Networks and Communications

作者： Ammar Zafar Mohamed-Slim Alouini Yunfei Chen Redha M. Radaydeh Electrical Engineering Program King Abdullah University for Science and Technology Thuwal Makkah Saudi Arabia School of Engineering University of Warwick Coventry UK

In this paper, we present an optimal resource allocation scheme (ORA) for an all-participate (AP) cognitive relay network that minimizes the symbol error rate (SER). The SER is derived and different constraints are considered on the system. We consider the cases of both individual and global power constraints, individual constraints only and global constraints only. Numerical results show that the ORA scheme outperforms the schemes with direct link only and uniform power allocation (UPA) in terms of minimizing the SER for all three cases of different constraints. Numerical results also show that the individual constraints only case provides the best performance at large signal-to-noise-ratio (SNR).

关键词： Relays Resource management Signal to noise ratio Cognitive radio Interference Sensors Optimization

来源：评论

学校读者我要写书评

暂无评论

Joint scheduling for dual-hop block-fading broadcast channels

Joint scheduling for dual-hop block-fading broadcast channel...

引用

IEEE Globecom Workshops

作者： Ammar Zafar Mohammad Shaqfeh Mohamed-Slim Alouini Hussein Alnuweiri EE Program King Abdullah University for Science and Technology Thuwal Makkah Saudi Arabia Department of Electrical and Computer Engineering Texas A and M University Qatar Doha Qatar

In this paper, we propose joint user-and-hop scheduling over dual-hop block-fading broadcast channels in order to exploit multi-user diversity gains and multi-hop diversity gains all together. To achieve this objective, the first and second hops are scheduled opportunistically based on the channel state information and as a prerequisite we assume that the relay, which is half-duplex and operates using decode-and-forward, is capable of storing the received packets from the source until the channel condition of the destined user becomes good to be scheduled. We formulate the joint scheduling problem as maximizing the weighted sum of the long term achievable rates by the users under a stability constraint, which means that on the long term the rate received by the relay should equal the rate transmitted by it, in addition to constant or variable power constraints. We show that this problem is equivalent to a single-hop broadcast channel by treating the source as a virtual user with an optimal priority weight that maintains the stability constraint. We show how to obtain the source weight either off-line based on channel statistics or on real-time based on channel measurements. Furthermore, we consider special cases including the maximum sum rate scheduler and the proportional fair scheduler. We demonstrate via numerical results that our proposed joint scheduling scheme enlarges the rate region as compared with a scheme that employs multi-user scheduling alone.

关键词： Relays Joints Resource management Throughput Real-time systems Magnetohydrodynamics Multiuser detection

来源：评论

学校读者我要写书评

暂无评论

Optimal Power Allocation of a Sensor Node Under Different Rate Constraints

Optimal Power Allocation of a Sensor Node Under Different Ra...

引用

IEEE International Conference on Communications

作者： Jose Roberto Ayala Solares Zouheir Rezki Mohamed-Slim Alouini Division of Mathematical and Computer Sciences and Engineering (MCSE) King Abdullah University of Science and Technology (KAUST) Division of Physical Sciences and Engineering (PSE) King Abdullah University of Science and Technology (KAUST)

ISBN: (纸本)9781457720529

The optimal transmit power of a sensor node while satisfying different rate constraints is derived. First, an optimization problem with an instantaneous transmission rate constraint is addressed. Next, the optimal power is analyzed, but now with an average transmission rate constraint. The optimal solution for a class of fading channels, in terms of system parameters, is presented and a suboptimal solution is also proposed for an easier, yet efficient, implementation. Insightful asymptotical analysis for both schemes, considering a Rayleigh fading channel, are shown. Finally, the optimal power allocation for a sensor node in a cognitive radio environment is analyzed where an optimum solution for a class of fading channels is again derived. In all cases, numerical results are provided for either Rayleigh or Nakagami-m fading channels.

关键词： Wireless sensor network Cognitive radio Optimal power Rate constraint Interference constraint power splitting Fading channels Line of nodes Sensors Raleigh fading channels Transmitter power Constraint optimal solution Optimal Rayleigh system parameter TRANSMISSION RATE

来源：评论

学校读者我要写书评

暂无评论

New Resource Allocation Scheme for Cognitive Relay Networks with Opportunistic Access

New Resource Allocation Scheme for Cognitive Relay Networks ...

引用

IEEE International Conference on Communications

作者： Ammar Zafar Mohamed-Slim Alouini Yunfei Chen Redha M. Radaydeh EE Program King Abdullah University of Science and Technology (KAUST) School of Engineering University of Warwick

ISBN: (纸本)9781457720529

In this paper, a new resource allocation scheme to minimize Symbol Error rate (SER) for relay assisted cognitive radio networks is studied. A cognitive relay network with amplify-and-forward (AF) fixed gain relays and opportunistic access to the licensed spectrum is considered. The SER objective function and the optimization constraints are derived first. The resource allocation algorithm is then derived using the Langrangian multiplier method. Closed form expressions are derived for the source and relay powers and, symbol time. Analytical results show that the optimal power allocation follows an extended water-filling solution.

关键词： Cognitive relays Opportunistic access Resource allocation Symbol error rate Relay networks Resource utilization Constrained optimization relay management of resources power splitting SAFETY EVALUATION REPORT Cognitive radio Access

来源：评论

学校读者我要写书评

暂无评论

Study of LCP Based Flexible Patch Antenna Array

Study of LCP Based Flexible Patch Antenna Array

引用

IEEE International Symposium on Antennas and Propagation

作者： Farhan A. Ghaffar Atif Shamim Langis Roy Electrical Engineering Program King Abdullah University of Science and Technology Thuwal Saudi Arabia Department of Electronics Carleton University Ottawa Canada

ISBN: (纸本)9781467304610

Wrapping of a two element LCP based patch antenna array is studied in this work. For the first time, the designed array is bent in both E and H planes to observe the effect on the radiation and impedance performance of the antenna. The 38 GHz simulation results reveal better performance for H plane bending as compared to E plane bending. A 100 um thick substrate is used for the design which is best suited for flexible antenna applications. Gain variations of 1.1 dB and 1.4 dB are observed for the two orientations while a significantly increased impedance bandwidth of 3 % is obtained with H plane wrapping. The design is highly suitable for broadband micro-cellular backhaul applications.

关键词： KLHDC2 gene LCP Wrapping Patch antennas plane Antenna arrays Platanus hybrida Planing Hydrogen FLEXIBLE Radiation

来源：评论

学校读者我要写书评

暂无评论

Security assessment of code refactoring rules

Security assessment of code refactoring rules

引用

2012 National Workshop on Information Assurance Research, WIAR 2012

作者： Alshammari, Bandar Fidge, Colin Corney, Diane School of Electrical Engineering and Computer Science Queensland University of Technology Australia School of Public Health and Health Informatics King Saud Bin Abdulaziz University for Health Sciences Saudi Arabia

ISBN: (纸本)9783800734320

Refactoring is a common approach to producing better quality software. Its impact on many software quality properties, including reusability, maintainability and performance, has been studied and measured extensively. However, its impact on the information security of programs has received relatively little attention. In this work, we assess the impact of a number of the most common code-level refactoring rules on data security, using security metrics that are capable of measuring security from the point view of potential information flow. The metrics are calculated for a given Java program using a static analysis tool we have developed to automatically analyse compiled Java bytecode. We ran our Java code analyser on various programs which were refactored according to each rule. New values of the metrics for the refactored programs then confirmed that the code changes had a measurable effect on information security. © WIAR 2012 - National Workshop on Information Assurance Research, Proceedings. All rights reserved.

关键词： Static analysis

来源：评论

学校读者我要写书评

暂无评论

An automated tool for assessing security-critical designs and programs

An automated tool for assessing security-critical designs an...

引用

2012 National Workshop on Information Assurance Research, WIAR 2012

ISBN: (纸本)9783800734320

This paper describes in detail our Security-Critical program Analyser (SCPA). SCPA is used to assess the security of a given program based on its design or source code with regard to data flow-based metrics. Furthermore, it allows software developers to generate a UML-like class diagram of their program and annotate its confidential classes, methods and attributes. SCPA is also capable of producing Java source code for the generated design of a given program. This source code can then be compiled and the resulting Java bytecode program can be used by the tool to assess the program's overall security based on our security metrics. © WIAR 2012 - National Workshop on Information Assurance Research, Proceedings. All rights reserved.

关键词： Java programming language

来源：评论

学校读者我要写书评

暂无评论

Cluster-based spectrum sensing for cognitive radios with imperfect channel to cluster-head

Cluster-based spectrum sensing for cognitive radios with imp...

引用

IEEE Conference on Wireless Communications and Networking

作者： Mahdi Ben Ghorbel Haewoon Nam Mohamed-Slim Alouini Electrical Engineering Program King Abdullah University for Science and Technology Thuwal Makkah Saudi Arabia Electronics and Communication Engineering Hanyang University Ansan South Korea

Spectrum sensing is considered as the first and main step for cognitive radio systems to achieve an efficient use of spectrum. Cooperation and clustering among cognitive radio users are two techniques that can be employed with spectrum sensing in order to improve the sensing performance by reducing miss-detection and false alarm. In this paper, within the framework of a clustering-based cooperative spectrum sensing scheme, we study the effect of errors in transmitting the local decisions from the secondary users to the cluster heads (or the fusion center), while considering non-identical channel conditions between the secondary users. Closed-form expressions for the global probabilities of detection and false alarm at the cluster head are derived.

关键词： Signal to noise ratio Sensors Cognitive radio Error probability Shadow mapping Binary phase shift keying Fading

来源：评论

学校读者我要写书评

暂无评论

Influence of vertical coupling on the lasing operation of quantum-dash laser

Influence of vertical coupling on the lasing operation of qu...

引用

IEEE PhotonicsGlobal@Singapore, IPGC

作者： M. Z. M. Khan Tien K. Ng Boon S. Ooi Photonics Laboratory Computer Electrical and Mathematical Sciences and Engineering (CEMSE) Division King Abdullah University of Science and Technology Thuwal Saudi Arabia

The authors numerically investigated the consequence of vertical coupling among multi-stack InAs quantum dash (Qdash) laser structure on the lasing bandwidth. The developed model is based on multi-population carrier-photon rate equation and incorporates inhomogeneous broadening due to dash size or composition fluctuation, homogeneous broadening of optical gain, and the multi-longitudinal photon modes. In addition, the effect of Qdash layers emitting at different wavelength, and the carrier coupling (tunneling) between adjacent stacks, are also accounted for. The results predict a direct relation between the lasing bandwidth and the barrier thickness and hence enhanced lasing bandwidth could be achieved by decoupling the Qdash layers (large barrier thickness). Moreover, the model further affirms the non-equilibrium distribution of carriers among Qdash layers in a multi-stack laser structure.

关键词： Couplings Bandwidth Nonhomogeneous media Semiconductor lasers Photonics Mathematical model

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217页 << < 196 197 198 199 200 201 202 203 204 205 > >>

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：