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

180 篇 会议
10 篇 期刊文献

馆藏范围

190 篇 电子文献
0 种 纸本馆藏

日期分布

学科分类号

89 篇 工学
- 52 篇 计算机科学与技术...
- 42 篇 信息与通信工程
- 37 篇 软件工程
- 13 篇 机械工程
- 13 篇 交通运输工程
- 8 篇 动力工程及工程热...
- 8 篇 控制科学与工程
- 4 篇 仪器科学与技术
- 4 篇 电气工程
- 4 篇 电子科学与技术（可...
- 2 篇 力学（可授工学、理...
- 2 篇 航空宇航科学与技...
- 2 篇 生物医学工程（可授...
- 2 篇 公安技术
- 1 篇 光学工程
- 1 篇 建筑学
- 1 篇 土木工程
21 篇 管理学
- 18 篇 管理科学与工程(可...
- 10 篇 工商管理
- 4 篇 图书情报与档案管...
15 篇 理学
- 8 篇 数学
- 3 篇 物理学
- 2 篇 地球物理学
- 2 篇 系统科学
- 1 篇 统计学（可授理学、...
2 篇 法学
- 2 篇 社会学
2 篇 医学
- 2 篇 基础医学(可授医学...
- 2 篇 临床医学
- 2 篇 药学(可授医学、理...
1 篇 经济学
- 1 篇 应用经济学
1 篇 农学

主题

34 篇 wireless sensor ...
21 篇 computer network...
17 篇 vehicles
16 篇 operating system...
15 篇 protocols
13 篇 wireless communi...
11 篇 routing protocol...
10 篇 roads
10 篇 hardware
9 篇 conferences
9 篇 routing
9 篇 throughput
9 篇 bandwidth
8 篇 monitoring
8 篇 delay tolerant n...
8 篇 streaming media
7 篇 safety
7 篇 quality of servi...
7 篇 servers
7 篇 mobile communica...

机构

49 篇 institute of ope...
18 篇 institute of ope...
18 篇 institute of ope...
9 篇 technische unive...
8 篇 institute of ope...
8 篇 institute of ope...
7 篇 institute of ope...
6 篇 tu braunschweig ...
5 篇 technische unive...
4 篇 volkswagen ag
4 篇 volkswagen ag wo...
4 篇 technische unive...
3 篇 institute for op...
3 篇 institute of ope...
3 篇 c4c engineering ...
3 篇 institute of ope...
2 篇 institute of com...
2 篇 technische unive...
2 篇 institute of inf...
2 篇 cyber-physical s...

作者

70 篇 lars wolf
43 篇 wolf lars
18 篇 ulf kulau
16 篇 felix büsching
14 篇 lars c. wolf
13 篇 m. zitterbart
11 篇 sebastian schild...
10 篇 schildt sebastia...
10 篇 georg von zengen
9 篇 alexander willec...
8 篇 keno garlichs
8 篇 wolf-bastian pöt...
8 篇 stephan rottmann
7 篇 wolf lars c.
7 篇 rottmann stephan
6 篇 yannic schröder
6 篇 morgenroth johan...
6 篇 doering michael
6 篇 pöttner wolf-bas...
5 篇 fischer stefan

语言

189 篇 英文
1 篇 中文

检索条件"机构=Institute for Operating Systems and Computer Networks"

共 190 条记录，以下是111-120 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：

Optimization of vehicular applications and communication properties with Connectivity Maps

Optimization of vehicular applications and communication pro...

引用

IEEE Conference on ALocal computer networks Workshops (LCN Workshops)

作者： Tobias Pögel Lars Wolf Institute of Operating Systems and Computer Networks Technische Universität Braunschweig Braunschweig Germany

Cellular networks are particularly suitable for the provision of vehicular online services due to their high coverage rates. The network dynamics and the mobility of the vehicle lead to frequent changes in the communication properties. Many vehicular application do not deal well with unexpected changes in conditions. In this paper we present our approach to provide vehicles with context data about the future network properties, using the principles of crowdsourcing. We demonstrate the usability of the approach with an adaptive video streaming where the bitrate and buffer size are adapted to the expected conditions. In a second scenario we use the knowledge for the optimization of handover times. Thus, the negative handover effects are significantly reduced. Based on an evaluation scenario, the differences between common network-dependent and the Connectivity Map supported handovers are investigated and the significant improvement potential is shown.

关键词： Handover Streaming media Vehicles Optimization Context Throughput

来源：评论

学校读者我要写书评

暂无评论

Object Fusion for Collective Perception: Will it Scale?

Object Fusion for Collective Perception: Will it Scale?

引用

International Conference on Intelligent Transportation

作者： Alexander Willecke Roman Stahl Lars C. Wolf Technische Universität Braunschweig Institute of Operating Systems and Computer Networks Braunschweig Germany

ISBN: (数字)9798331505929

ISBN: (纸本)9798331505936

With Collective Perception, stations exchange information from their local perception with each other via broadcast communication. The information about perceived objects can enhance their awareness, allowing perception beyond their line of sight and increasing traffic safety. Therefore, received object information must be processed by an Object Fusion system that creates a holistic environment model. Solving this fusion problem is not trivial and computationally expensive. However, the computing power required for a single station that implements an Object Fusion system depends on the amount of object data that must be processed. The amount of data will rise with a progressing market introduction as more stations share their perception. For analyzing the scalability of fusion, the Artery V2X Simulation framework was extended with an Object Fusion architecture. The results show how much object data must be processed and stored for three realistic large-scale traffic scenarios at different Market Penetration Rates.

关键词： Measurement Scalability Computational modeling Roads Road side unit computer architecture Safety Vehicle-to-everything Arteries Standards

来源：评论

学校读者我要写书评

暂无评论

Investigation of Multipath Effects on Phase-based Ranging

Investigation of Multipath Effects on Phase-based Ranging

引用

International Conference on Indoor Positioning and Indoor Navigation (IPIN)

作者： Yannic Schröder Daniel Heidorn Lars Wolf Institute of Operating Systems and Computer Networks Technische Universität Braunschweig Braunschweig Germany

Multipath propagation introduces particular challenges for ranging schemes that exploit radio wave propagation. We investigate the impact of multipath propagation on phase-based ranging in the 2.4 GHz band. We show that a phase-based ranging system might report the length of a reflected signal path instead of that of the direct path. In our experiments, we identified three different measurement outcomes, depending on physical properties of the radio link between devices. Our findings show that multipath propagation can lead to severe measurement errors. To mitigate the effects, we propose a novel algorithm to compute the distance from measured phase angles. Our algorithm reduces measurement errors by 51 % compared to a state-of-the-art algorithm in a scenario with strong multipath effects.

关键词： Receivers Distance measurement Frequency measurement Interference Fading channels Phase measurement Estimation

来源：评论

学校读者我要写书评

暂无评论

Leveraging the Collective Perception Service for CAM Information Aggregation at Intersections

Leveraging the Collective Perception Service for CAM Informa...

引用

IEEE Conference on Vehicular Technology (VTC)

作者： Keno Garlichs Caglar Kaya Lars Wolf Institute of Operating Systems and Computer Networks Technische Universität Braunschweig Braunschweig Germany

ISBN: (数字)9781728194844

ISBN: (纸本)9781728194851

Intersections are prone to accidents due to poor visibility and complex traffic situations. Vehicle-to-X communication enables vehicles to announce themselves by sending Cooperative Awareness Messages or Basic Safety Messages and thus helps to greatly improve the time they are aware of each other before arriving at an intersection. However, similar to the drivers' vision, communication can be obstructed by buildings, too. To mitigate this issue, different approaches to message relaying have been suggested in the past. While they discussed the general idea, this paper gives a detailed proposal on how Road Side Units can aggregate and relay messages using the Collective Perception Service which is currently being standardised. A simulation study analyses the performance of direct and aggregated relaying using a complete ITS-G5 communication stack. Especially, the influence of Decentralized Congestion Control is discussed which earlier studies did not include. It is shown that aggregating Cooperative Awareness information in Collective Perception Messages can greatly improve the drivers' reaction time while at the same time adding only a small amount of load to the communication channel.

关键词： Vehicular and wireless technologies Road side unit Conferences Communication channels Safety Proposals Load modeling

来源：评论

学校读者我要写书评

暂无评论

Optimization of GSM/UMTS Inter-System Handover times provided by Connectivity Maps

Optimization of GSM/UMTS Inter-System Handover times provide...

引用

International Conference on Connected Vehicles and Expo (ICCVE)

作者： Tobias Pögel Lars Wolf Institute of Operating Systems and Computer Networks Technische Universität Braunschweig Braunschweig Germany

Cellular networks are particularly suitable for the provision of vehicular online services due to their high coverage rates. In addition to LTE, the most widely used networks for mobile data services are GSM (2G) and UMTS (3G) with several enhancements. In the vicinity of UMTS cell boundaries it comes to Inter-System Handovers (ISHO) to switch over to a GSM network, which usually covers large areas. The ISHO can result in unfavorable situations such as significant delays and long communication disruptions. In the opposite direction the handover is often performed late, so that networks with higher capacities and lower latencies remain unutilized. In this paper ISHO times are optimized by the use of context data from a Connectivity Map. Vehicles which go around can be exploited to collect data on the current network properties. Afterward they are transferred to a central server where predictions of the future connectivity can be estimated. The newly gained knowledge can be made available to the vehicles for optimizing the handover times. With a novel developed trigger, the cellular device is actively influenced to initiate the handover. Thus, the negative effects are significantly reduced. Based on an evaluation scenario, the differences between common network-dependent and the Connectivity Map supported handovers are investigated.

关键词： Handover Throughput Vehicles 3G mobile communication Context Optimization

来源：评论

学校读者我要写书评

暂无评论

Detecting malicious behavior in a vehicular DTN for public transportation

Detecting malicious behavior in a vehicular DTN for public t...

引用

International Global Information Infrastructure Symposium (GIIS)

作者： Yinghui Guo Sebastian Schildt Tobias Pögel Lars Wolf Institute of Operating Systems and Computer Networks Technische Universität Braunschweig Braunschweig Germany

In the past we presented a system that uses public buses and trams in the city of Braunschweig to monitor air pollution in a distributed way. This system has been built on the principles of delay tolerant networking. Since reliability and resilience is an important factor in such systems, in this work we propose a Misbehavior Detection System (MDS) to defend the Braunschweig network against the interference of faulty and malicious nodes. By collecting and securely exchanging data of previous encounters, a node can use cluster analysis to assess the trustworthiness of other nodes in order to detect malicious behavior. By evaluating our method through different routing protocols in Delay- and Disruption-Tolerant networks (DTNs), we will show that our MDS is able to efficiently protect the system with low overhead.

关键词： Erbium Optimized production technology Logic gates Thin film transistors Routing protocols Vehicles Air pollution

来源：评论

学校读者我要写书评

暂无评论

A test environment for phase-based ranging and localization

A test environment for phase-based ranging and localization

引用

Workshop on Positioning, Navigation and Communication, WPNC

作者： Yannic Schröder Dennis Reimers Lars C. Wolf Institute of Operating Systems and Computer Networks Technische Universität Braunschweig Braunschweig Germany

This paper introduces a test environment to evaluate phase-based ranging and localization techniques. It consists of a Continous Integration system for automated tests on real hardware and a testbed to evaluate system performance under realistic conditions. A modular architecture fulfilling the special requirements of phase-based ranging evaluations is proposed. The architecture can be deployed using diverse hardware to allow great flexibility in experiment designs. Further, we present a deployment of the testbed architecture based on off-the-shelf Single-Board computers and our own wireless sensor node in our university building.

关键词： Distance measurement Software Wireless sensor networks Servers Hardware computer architecture Conferences

来源：评论

学校读者我要写书评

暂无评论

All eyes on code: Using call graphs for WSN software optimization

All eyes on code: Using call graphs for WSN software optimiz...

引用

IEEE Conference on ALocal computer networks Workshops (LCN Workshops)

作者： Wolf-Bastian Pöttner Daniel Willmann Felix Büsching Lars Wolf Technische Universität Braunschweig Institute of Operating Systems and Computer Networks Braunschweig Germany

Efficient code is essential for Wireless Sensor networks. Limited computational resources and low memory capacities require a disciplined and provident programming style. However, optimizing code requires tools to provide a deep insight into where the code may have potential for improvement. In this paper we present a way of generating call graphs of software for standard Wireless Sensor Nodes. We execute the software on the actual nodes to collect profiling information and visualize this data on a PC-based host system. The call graphs are enriched with information about function execution time, execution count and visualize the call chain of the program to allow the programmer to identify room for optimization.

关键词： Conferences Wireless sensor networks Hardware Manuals Libraries

来源：评论

学校读者我要写书评

暂无评论

Distributed Energy Measurement in WSNs for Outdoor Applications

Distributed Energy Measurement in WSNs for Outdoor Applicati...

引用

IEEE Communications Society Conference on Sensor and Ad Hoc Communications and networks (SECON)

作者： Robert Hartung Ulf Kulau Lars Wolf Institute of Operating Systems and Computer Networks Technische Universität Braunschweig Braunschweig Germany

ISBN: (纸本)9781509017331

Energy is one of the most critical resources in Wireless Sensor networks (WSN). For any WSN deployment, being it for a productive use case or for a testbed, the ability to perform energy measurements is of major importance, e.g., to estimate the status of the WSN, the need for maintenance, or for remaining lifetime. This paper presents a distributed energy measurement system for outdoor applications. An existing testbed has been extended by the micro controller unit (MCU)- based oscilloscope PotatoScope. Measuring voltage and current of the sensor node, undervolting effects and energy consumption of realtime applications can be observed. The PotatoScope is capable of capturing the power dissipation precisely at a high temperature range of 100 K. Using high sample rates with up to 500 kHz, the system needs to be capable of storing and archiving the measured data. A final evaluation shows a 0.9% drift for voltage measurements and a 1.6% drift for current measurements over the range of 100K. Using an SD card, long-term measurements can be made with up to 500 kHz. Nevertheless, a live mode allows sample rates up to 2 MHz when using the PotatoScope with a computer.

关键词： Current measurement Temperature measurement Wireless sensor networks Energy measurement Temperature sensors Voltage measurement Temperature

来源：评论

学校读者我要写书评

暂无评论

Accurate and Precise Distance Estimation from Phase-Based Ranging Data

Accurate and Precise Distance Estimation from Phase-Based Ra...

引用

International Conference on Indoor Positioning and Indoor Navigation (IPIN)

作者： Yannic Schröder Dennis Reimers Lars Wolf Institute of Operating Systems and Computer Networks Technische Universität Braunschweig Braunschweig Germany

Many localization approaches need distance measurements to known locations as input. We present the Complex-valued Distance Estimation algorithm to compute the distance between two radio transceivers from phase measurements. Our proposed algorithm reliably computes the distance from a sampled phase response via Fast Fourier Transform. We compare the new approach with two other state-of-the-art algorithms by evaluating distance errors of real-world measurements in different scenarios. Our algorithm achieves high accuracy and precision with a mean error of 14.9 cm and a standard deviation of 10.4 cm. Further, we evaluate the ability of all algorithms to detect outliers with large errors in their results. We optimize our approach to reduce computation complexity via interpolation without affecting accuracy or precision.

关键词： Estimation Phase measurement Distance measurement Frequency measurement Phasor measurement units Radio transceivers Measurement uncertainty

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19页 << < 8 9 10 11 12 13 14 15 16 17 > >>

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：