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

157 篇 会议
6 篇 期刊文献

馆藏范围

163 篇 电子文献
0 种 纸本馆藏

日期分布

学科分类号

61 篇 工学
- 50 篇 信息与通信工程
- 47 篇 计算机科学与技术...
- 34 篇 软件工程
- 11 篇 动力工程及工程热...
- 8 篇 控制科学与工程
- 6 篇 电子科学与技术（可...
- 2 篇 机械工程
- 2 篇 仪器科学与技术
- 2 篇 电气工程
- 2 篇 网络空间安全
- 1 篇 力学（可授工学、理...
- 1 篇 材料科学与工程（可...
- 1 篇 化学工程与技术
- 1 篇 交通运输工程
- 1 篇 环境科学与工程（可...
21 篇 理学
- 20 篇 数学
- 8 篇 统计学（可授理学、...
- 2 篇 物理学
- 1 篇 化学
- 1 篇 大气科学
13 篇 管理学
- 10 篇 管理科学与工程(可...
- 6 篇 工商管理
- 5 篇 图书情报与档案管...
3 篇 经济学
- 3 篇 应用经济学
1 篇 法学
- 1 篇 社会学

主题

62 篇 mobile computing
40 篇 distributed comp...
39 篇 computer network...
26 篇 telecommunicatio...
24 篇 traffic control
24 篇 ad hoc networks
23 篇 wireless sensor ...
21 篇 quality of servi...
21 篇 delay
20 篇 mobile ad hoc ne...
20 篇 throughput
20 篇 intelligent netw...
20 篇 media access pro...
18 篇 wireless network...
17 篇 analytical model...
17 篇 wireless mesh ne...
16 篇 energy efficienc...
15 篇 computer science
15 篇 bandwidth
14 篇 wireless lan

机构

22 篇 obr center for d...
11 篇 obr center for d...
9 篇 center for distr...
7 篇 obr center for d...
7 篇 center of distri...
5 篇 center for distr...
5 篇 obr center of di...
4 篇 department of ap...
4 篇 center for distr...
4 篇 obr center for d...
4 篇 mitsubishi elect...
4 篇 obr center for d...
4 篇 center for distr...
3 篇 obr center for d...
3 篇 center of distri...
3 篇 department of co...
3 篇 center for distr...
3 篇 center for distr...
3 篇 center for distr...
3 篇 mesh research an...

作者

59 篇 d.p. agrawal
45 篇 agrawal dharma p...
36 篇 dharma p. agrawa...
10 篇 h. gossain
10 篇 weihuang fu
9 篇 qing-an zeng
9 篇 c. cordeiro
8 篇 xiaodong wang
8 篇 bin xie
7 篇 d. p. agrawal
6 篇 cordeiro carlos
6 篇 gossain hrishike...
5 篇 jun yin
5 篇 yun wang
5 篇 qi zhang
5 篇 d. cavalcanti
5 篇 t. joshi
5 篇 agrawal d.p.
5 篇 biswas ratnabali
4 篇 lakshmi santhana...

语言

161 篇 英文
2 篇 中文

检索条件"机构=Center for Distributed and Mobile computing Department of ECECS"

共 163 条记录，以下是61-70 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：

WLCp1-15: Optimal Transmission Range with Delay Constraints for mobile Wireless Networks

WLCp1-15: Optimal Transmission Range with Delay Constraints ...

引用

IEEE Globecom 2006

作者： Younghwan Yoo Xiaodong Wang Dharma P. Agrawal OBR Center for Distributed and Mobile Computing Department of ECECS University of Cincinnati Cincinnati OH USA

Assuming that all mobile nodes (MNs) have the same transmission range, the actual hop count between any two MNs is proportional to the distance between them. Based on the found relation between distance and hop count, the required hop count between two MNs can be accurately estimated, given the distance between them. Using the distribution of distance between MNs, this paper also suggests the optimal transmission range of MNs, which can guarantee delay constraints of a requested ratio of connections in an entire network.

关键词： Wireless networks mobile computing distributed computing Delay estimation mobile ad hoc networks Computer networks Computational modeling Analytical models Energy efficiency Energy consumption

来源：评论

学校读者我要写书评

暂无评论

Concurrent Packet Reception Bounds of On-Demand MAC Protocols for Multiple Beam Antennas

Concurrent Packet Reception Bounds of On-Demand MAC Protocol...

引用

IEEE International Symposium on Personal, Indoor and mobile Radio Communications (PIMRC)

作者： Vivek Jain Dharma P. Agrawal OBR Center for Distributed and Mobile Computing Department of ECECS University of Cincinnati Cincinnati OH USA

Multiple beam antennas can initiate several data communications concurrently by forming spatially separable beams. However, their concurrent packet reception (CPR) capability is largely governed by the underlying medium access control (MAC) protocol. In this paper, we present an analytical framework to calculate CPR upper bounds of multiple beam antennas using on-demand MAC protocols. The model can be used for adaptively changing transmission probability of the nodes so as to achieve optimal performance. We consider both transmitter-initiated and receiver initiated medium access protocols with uniform and random distribution of nodes. Using the developed model, we compute CPR capability of IEEE 802.11 DCF and ESIF based mechanisms for multiple beam antennas. We verify our model using simulations

关键词： Media Access Protocol Directional antennas Access protocols Scheduling Antenna arrays Data communication Upper bound Ad hoc networks Transmitting antennas Transmitters

来源：评论

学校读者我要写书评

暂无评论

Exploiting Mobility Patterns to Reduce Re-Authentication Overheads in Infrastructure WLAN Networks

Exploiting Mobility Patterns to Reduce Re-Authentication Ove...

引用

Canadian Conference on Electrical and Computer Engineering (CCECE)

作者： Tarun Joshi Anindo Mukherjee Dharma P Agrawal OBR Center for Distributed and Mobile Computing Department of ECECS University of Cincinnati Cincinnati OH USA

The current EAP-TLS standard accounts for authentication delays of the order of one second for infrastructure 802.11 networks. This delay is clearly unacceptable for maintaining the QoS requirements for a mobile station which have frequent handoffs to different regions. Pre-authentication schemes have been proposed to reduce these delays. However, most of these schemes suffer from an increased network message overhead since they fail to appropriately model the mobility of each individual user. In this paper, we exploit the notion of predictability in user mobility patterns and propose a set of novel proactive key distribution algorithms to achieve low latencies while minimizing the message overhead. Our schemes involve pre-distributing keys in fewer necessary access points (APs) as opposed to all neighboring APs. We evaluate the performance of our schemes for three different mobility models; (i) predictable motion (ii) changing predictable motion and (iii) random motion. Almost under all scenarios, our schemes indicate up to 70% message reduction, while maintaining similar latencies

关键词： Wireless LAN Delay Authentication Probes Bandwidth mobile computing Computer networks distributed computing Predictive models mobile radio mobility management

来源：评论

学校读者我要写书评

暂无评论

Analytical Modeling of the Link Delay Characteristics for IEEE 802.11 DCF Multi-Rate WLANs

Analytical Modeling of the Link Delay Characteristics for IE...

引用

Canadian Conference on Electrical and Computer Engineering (CCECE)

作者： Tarun Joshi Anindo Mukherjee Dharma P Agrawal OBR Center for Distributed and Mobile Computing Department of ECECS University of Cincinnati Cincinnati OH USA

Performance evaluation of IEEE 802.11 DCF has been widely studied under the assumption of a single transmission rate by all competing nodes. In practice, however, stations typically use different transmission rates. This is done to match to the changing channel conditions. Stations with poor channel conditions typically employ lower transmit rates in comparison to stations with better channel conditions. Under such scenarios, the throughput of each station becomes independent of its own transmit rate; rather it gets bounded by the slowest transmitting peer. This has been popularly classified as the performance anomaly problem. This paper provides a simple yet accurate analytical framework to study the link delay characteristics of such multi-rate networks

关键词： Analytical models Delay Throughput Peer to peer computing Counting circuits Performance analysis Monitoring Space stations Collision avoidance mobile computing

来源：评论

学校读者我要写书评

暂无评论

Channel Assignment with Route Discovery (CARD) using Cognitive Radio in Multi-channel Multi-radio Wireless Mesh Networks

Channel Assignment with Route Discovery (CARD) using Cogniti...

引用

IEEE Workshop on Networking Technologies for Software Defined Radio Networks (SDR)

作者： Chittabrata Ghosh Dharma P. Agrawal Department of ECECS University of Cincinnati Cincinnati Ohio USA OBR Center for Distributed and Mobile Computing Department of ECECS University of Cincinnati Cincinnati Ohio - 45219. Email: dpa@ececs.uc.edu

For better spectrum utilization, efficient channel allocation in multi-radio wireless mesh networks has become an active research area. Our proposed CARD algorithm deals with the application of cognitive mesh routers for fixed channel assignments to mesh clients under each router's domain. The farthest channel assignment by the cognitive radio in mesh routers ensures minimum inter-router and intra-router interference. Initial fixed assignment of channels to clients supporting k-connectivity (k = 3 and 5 sub-channels) shows substantial increase with 15 concurrent transmissions when compared to 4 in case of the CCA scheme with k=3 and 3 channels to choose, i.e., a factor of almost 4. The improvement in communication delay is about a factor of 80 when compared to SC and a factor of 35 compared to CCA.

关键词： Cognitive radio Wireless mesh networks Interference Wireless LAN Communication switching Wireless application protocol Access protocols Switches Mesh networks mobile computing

来源：评论

学校读者我要写书评

暂无评论

Achieving Fairness in Wireless LANs by Enhanced IEEE 802.11 DCF

Achieving Fairness in Wireless LANs by Enhanced IEEE 802.11 ...

引用

IEEE International Conference on Wireless and mobile computing, Networking And Communications (WiMob)

作者： N.S.P. Nandiraju H. Gossain D. Cavalcanti K.R. Chowdhury D.P. Agrawal Center for Distributed and Mobile Computing Department of ECECS. University of Cincinnati Cincinnati OH USA Mesh Research and Development Group Motorola Inc. Maitland FL USA

Over the past few years, wireless local area networks (WLANs) have gained an increased attention and a large number of WLANs are being deployed in universities, companies, airports etc. Majority of the IEEE 802.11 based WLANs employ distributed coordination function (DCF) in wireless access points (AP) to arbitrate the wireless channel among Wireless Stations (STAs). However, DCF poses serious unfairness problem between uplink and downlink flows. To overcome this unfairness problem, we propose a simple enhancement to the IEEE 802.11 DCF which provides priority to the AP and thus enables it to acquire a larger share of the channel when required. We have demonstrated the unfairness problem through systematic measurements in an experimental test bed of WLAN using the legacy 802.11 DCF. We also developed analytical models to calculate the throughput of AP and the STAs and verify these results through thorough simulations in ns-2. We observe that our simulation results find in good agreement with our analytical models. Results show that our proposed enhancement achieves a fair distribution of bandwidth and improves the throughput (by nearly 300%) for the downlink flows as compared to the DCF, without severely affecting the performance of uplink flows

关键词： Wireless LAN Local area networks Downlink Analytical models Bandwidth Airports Throughput Scheduling algorithm mobile computing Computer networks

来源：评论

学校读者我要写书评

暂无评论

Mitigating Deafness in Multiple Beamforming Antennas

Mitigating Deafness in Multiple Beamforming Antennas

引用

IEEE Sarnoff Symposium

作者： Vivek Jain Dharma P. Agrawal OBR Center for Distributed and Mobile Computing Department of ECECS University of Cincinnati Cincinnati OH USA

ISBN: (纸本)9781424400027;1424400023

Deafness is considered as a major medium access problem arising due to directional communication in beamforming antennas. In this paper, we provide a novel algorithm for mitigating deafness (AMD) in such antennas. The algorithm extends the directional virtual carrier sensing mechanism by dynamically maintaining parameters for every beam. AMD can easily be implemented with the existing medium access control (MAC) protocols for multiple beamforming antennas. Simulation results show that considerable performance gains can be achieved when the proposed algorithm is employed by the existing MAC schemes.

关键词： Beamforming antennas Deafness Medium access control Wireless ad hoc networks

来源：评论

学校读者我要写书评

暂无评论

Impact of Heterogeneity on Coverage and Broadcast Reachability in Wireless Sensor Networks

Impact of Heterogeneity on Coverage and Broadcast Reachabili...

引用

International Conference on Computer Communications and Networks (ICCCN)

作者： Yun Wang Xiaodong Wang Dharma P. Agrawal Ali A. Minai OBR Center of Distributed and Mobile Computing Department of Electrial and Computer Engineering and Computer Science University of Cincinnati Cincinnati OH USA

While most existing research efforts in the area of wireless sensor networks have focused on networks with identical nodes, deploying sensors with different capabilities has become a feasible choice. In this paper, we focus on sensor networks with two types of nodes that differ in their capabilities, and discuss the effects of heterogeneity of sensing and transmission ranges on the network coverage and broadcast reachability. Our work characterizes how the introduction of a few sensor nodes with better capabilities can reduce the number of total required sensors without sacrificing the coverage and the broadcast reachability. Analytical results are validated via simulations. This work can serve as a guideline for designing large-scale sensor networks cost-effectively. It can also be extended to more complicated heterogeneous wireless sensor networks with more than two types of sensors.

关键词： Broadcasting Wireless sensor networks Sensor phenomena and characterization Quality of service Computer networks distributed computing Monitoring Surveillance Costs mobile computing

来源：评论

学校读者我要写书评

暂无评论

Extracting Critical Attributes in Wireless Sensor Networks Using Modified Regression Polynomial

Extracting Critical Attributes in Wireless Sensor Networks U...

引用

IEEE International Conference on Networking, Sensing and Control

作者： T. Banerjee D.P. Agrawal D. French OBR Center for Distributed and Mobile Computing The Department of Electrical and Computer Engineering and Computer Science University of Cincinnati Cincinnati OH USA

In this paper, the spatio-temporal nature of sensor data is exploited to approximate current values of the sensors based on the observation of the same sensor in the previous period of time and the neighboring sensors' data. By applying linear regression, a polynomial can fit variation in the data over a given region for a specific period of time. Assuming attributes to have a gradual change both over time and space, readings of the neighboring sensors are highly correlated and the readings of sensors at any current period of time do not change drastically from the previous period. Based on this assumption, instead of performing the regression algorithm every time the sensed attributes change, an iterative scheme is employed by which the current values of sensors are approximated based on the previous readings. The percentage error in this approximation process is found to be less than 6%, while saving considerable amount of computational overhead. Analysis of the regression polynomial also accurately gives the location of critical points in the sensed region where minimum and maximum attribute values occur and could be very useful for sensor network applications

关键词： Intelligent networks Wireless sensor networks Polynomials Sensor phenomena and characterization Regression tree analysis mobile computing distributed computing Computer science Data mining Linear regression

来源：评论

学校读者我要写书评

暂无评论

Hops-based Sleep Scheduling Algorithm for Enhancing Lifetime of Wireless Sensor Networks

Hops-based Sleep Scheduling Algorithm for Enhancing Lifetime...

引用

IEEE Internatonal Conference on mobile Adhoc and Sensor Systems (MASS)

作者： Yun Wang Demin Wang Weihuang Fu Dharma P. Agrawal OBR Center of Distributed and Mobile Computing Department of Electrical and Computer Engineering and Computer Science University of Cincinnati Cincinnati OH USA

In this paper, we study the node sleep scheduling scheme in the commonly used static disk model for sensor networks, where homogenous sensors are uniformly distributed in a circular area with a stationary sink located at the center. Then, we introduce and analyze a hops-based sleeping scheduling algorithm (HSS) for enhancing the lifetime and energy efficiency of the sensor networks. The HSS divides the circular sensor network into several levels according to the average hop distance based on certain network parameters. By assigning hops-based sleeping probabilities to each sensor, and the network lifetime as well as energy efficiency can be greatly improved. Simulations are performed to compare our proposed HSS scheme with the traditional randomized sleeping scheduling (RSS) scheme, where all the nodes have the uniform sleeping probability. The results demonstrate that our HSS scheme can enhance network lifetime greatly, provide desired QoS requirement effectively, and drastically outperform the RSS scheme

关键词： Sleep Scheduling algorithm Wireless sensor networks Sensor phenomena and characterization Spread spectrum communication Energy efficiency Energy consumption Processor scheduling Computer science Telephony

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17页 << < 3 4 5 6 7 8 9 10 11 12 > >>

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：