检索结果-内蒙古大学图书馆

International Conference on Advanced Computing, ICAC

作者： C. Chandra Sekhar Sasi Kumar Madhan Subhas Raj Kumar Buyya Department of Computer Science and Engineering Indian Institute of Technology Madras CDAC Pune Chronus Corporation Computer Science and Software Engineering and Director of the Cloud Computing and Distributed Systems (CLOUDS) Laboratory at the University of Melbourne Australia

Support vector machine (SVM) is a pattern classification model suitable for classification and annotation of images using non-vectorial type representations of images. Varying length patterns extracted from image data correspond to sets of local feature vectors. Kernels designed for varying length patterns are called as dynamic kernels. The talk presents the issues in designing the dynamic kernel based SVMS for classification and annotation of images. Different methods for designing the dynamic kernels are presented. An intermediate matching kernel (IMK) for a pair of varying length patterns is constructed by matching the pairs of local feature vectors selected using a set of virtual feature vectors. For patterns corresponding to sets of feature vectors, a Gaussian mixture model (GMM) is used as the set of virtual feature vectors. The GMM-based IMK is considered for image processing tasks such as image classification, matching and annotation in content-based image retrieval. The talk presents results of experimental studies on image classification, annotation and retrieval of images using the kernel methods.

关键词： Cloud computing Kernel Technological innovation Support vector machine classification Learning systems Hidden Markov models Computational modeling

来源：评论

学校读者我要写书评

暂无评论

Profiling energy consumption of Wireless Sensor Nodes with almost zero effort

Profiling energy consumption of Wireless Sensor Nodes with a...

引用

IEEE International Conference on Communications

作者： Oliver Hahm Stephan Adler Institute of Computer Science Distributed Embedded Systems Freie Universitat Berlin

ISBN: (纸本)9781457720529

We present a technique to profile the energy consumption of real Wireless Sensor Network (WSN) applications. The introduced method is highly integrated into the system and allows the developer of WSN algorithms to analyze the power consumption almost without any additional effort. It can break the power consumption down to any desired level from function-based or thread-based analysis to the evaluation of functional blocks. The required measuring setup relies on a simple circuit using an instrumentation amplifier and a shunt. Energy profiling uses features of the GNU Compiler Collection and benefits from the multi-threading operating system μkleos written in pure C code. Compared to similar approaches in this field the energy profiler does not require any modifications to device drivers or application code. Due to this easily deployable method it is feasible to examine the demand for energy for every single node in the network.

关键词： Wireless sensor networks Energy consumption Energy measurement Hardware Instruments Operating systems Power demand

来源：评论

学校读者我要写书评

暂无评论

Towards Dependable Emergent Ensembles of Components: The DEECo Component Model

Towards Dependable Emergent Ensembles of Components: The DEE...

引用

Working IEEE/IFIP Conference on Software Architecture

作者： Jaroslav Keznikl Tomáš Bureš František Plášil Michal Kit Department of Distributed and Dependable Systems Faculty of Mathematics and Physics Charles University Prague Czech Republic Institute of Computer Science Academy of Sciences슠of the슠Czech Republic Prague Czech Republic

In the domain of dynamically evolving distributed systems composed of autonomous and (self-) adaptive components, the task of systematically managing the design complexity of their communication and composition is a pressing issue. This stems from the dynamic nature of such systems, where components and their bindings may appear and disappear without anticipation. To address this challenge, we propose employing separation of concerns via a mechanism of dynamic implicit bindings with implicit communication. This way, we strive for dynamically formed, implicitly interacting groups - ensembles - of autonomous components. In this context, we introduce the DEECo component model, where such bindings, as well as the associated communication, are managed in an automated way, enabling transparent handling of the dynamic changes in the system.

关键词： Robot kinematics Runtime Computational modeling Adaptation models computer architecture Software

来源：评论

学校读者我要写书评

暂无评论

FOAM: A Lightweight Method for Verification of Use-Cases

FOAM: A Lightweight Method for Verification of Use-Cases

引用

Euromicro Conference on Software Engineering and Advanced Applications (SEAA)

作者： Viliam Simko Petr Hnetynka Tomas Bures Frantisek Plasil Faculty of Mathematics and Physics Department of Distributed and Dependable Systems Charles University Prague Czech Republic Institute of Computer Science Academy of Sciences슠of the슠Czech Republic Prague Czech Republic

The advantage of textual use-cases is that they can be easily understood by stakeholders and domain experts. However, since use-cases typically rely on a natural language, they cannot be directly subject to a formal verification. In this paper, we present the FOAM method which features simple user-definable annotations, inserted into a use-case to make its semantics more suitable for verification. Subsequently a model-checking tool verifies temporal invariants associated with the annotations. This way, FOAM allows for harnessing the benefits of model-checking while still keeping the use-cases understandable for non-experts.

关键词： Unified modeling language Cities and towns Semantics Natural languages Automata Object oriented modeling Educational institutions

来源：评论

学校读者我要写书评

暂无评论

UAVNet: A Mobile Wireless Mesh Network Using Unmanned Aerial Vehicles

UAVNet: A Mobile Wireless Mesh Network Using Unmanned Aerial...

引用

institute of Electrical and Electronics Engineers Globecom Workshops

作者： Simon Morgenthaler Torsten Braun Zhongliang Zhao Thomas Staub Markus Anwander Communication and Distributed Systems Institute of Computer Science and Applied Mathematics Universitat Bern

ISBN: (纸本)9781467349420

We developed UAVNet, a framework for the autonomous deployment of a flying Wireless Mesh Network using small quadrocopter-based Unmanned Aerial Vehicles (UAVs). The flying wireless mesh nodes are automatically interconnected to each other and building an IEEE 802.11s wireless mesh network. The implemented UAVNet prototype is able to autonomously interconnect two end systems by setting up an airborne relay, consisting of one or several flying wireless mesh nodes. The developed software includes basic functionality to control the UAVs and to setup, deploy, manage, and monitor a Wireless mesh network. Our evaluations have shown that UAVNet can significantly improve network performance.

关键词： Unmanned Aerial Vehicles Wireless Mesh Networks Wireless Network Relaying

来源：评论

学校读者我要写书评

暂无评论

Editorial: Special issue dedicated to ICFP 2010

引用

Journal of Functional programming 2012年第4-5期22卷 379-381页

作者： UMUT A. ACAR JAMES CHENEY STEPHANIE WEIRICH Programming Languages and Systems Group Max Planck Institute for Software Systems Germany (e-mail: umut@***) Laboratory for Foundations of Computer Science University of Edinburgh Edinburgh UK (e-mail: jcheney@inf.ed.ac.uk) School of Engineering and Applied Science University of Pennsylvania Philadelphia PA 19104 USA (e-mail: sweirich@cis.upenn.edu)

The 15th ACM SIGPLAN International Conference on Functional programming (ICFP) took place on September 27–29, 2010 in Baltimore, Maryland. After the conference, the programme committee, chaired by Stephanie Weirich, selected several outstanding papers and invited their authors to submit to this special issue of Journal of Functional programming. Umut A. Acar and James Cheney acted as editors for these submissions. This issue includes the seven accepted papers, each of which provides substantial new material beyond the original conference version. The selected papers reflect a consensus by the program committee that ICFP 2010 had a number of strong papers that link core functional programming ideas with other areas, such as multicore, embedded systems, and data compression.

关键词：

来源：评论

学校读者我要写书评

暂无评论

An experimental facility for wireless multi-hop networks in future internet scenarios

An experimental facility for wireless multi-hop networks in ...

引用

2011 IEEE International Conference on Internet of Things, iThings 2011 and 4th IEEE International Conference on Cyber, Physical and Social Computing, CPSCom 2011

作者： Hahm, Oliver Gunes, Mesut Juraschek, Felix Blywis, Bastian Schmittberger, Nicolai Institute of Computer Science Computer Systems and Telematics Distributed Embedded Systems Freie Universitat Berlin Germany

ISBN: (纸本)9780769545806

Next to traditional communication systems like servers or routers at the backbone and personal computers or laptops acting as clients, the Future Internet will additionally comprise many so-called smart objects. Most of everyday devices like coffee machines, fridges, or light switches will participate in this Internet of Things (IoT). Small-sized computers will connect these devices to the network by establishing low power wireless links. To achieve this vision various kinds of wireless multihop networks (WMHNs) play an important role. During the last years, it has become clear that testbed-based research is mandatory in order to develop suitable protocol implementations and metrics for these networks. In this article, we review network configurations for wireless networks for the IoT. We describe the DESTestbed at the Freie Universität Berlin as an experimental facility to study these network configurations. In addition to the infrastructure and software provided by the testbed, we introduce μkleos as a microkernel based operating system for embedded devices. We designed μkleos with a special focus on Wireless Sensor Networks (WSNs) to complement our approach to study WMHNs. μkleos provides an implementation of 6LoWPAN to interconnect WSNs to IP-based networks. © 2011 IEEE.

关键词： Wireless sensor networks

来源：评论

学校读者我要写书评

暂无评论

G-Mesh-Lab wireless multi-hop network testbed for the G-Lab

G-Mesh-Lab wireless multi-hop network testbed for the G-Lab

引用

6th International Conference on Testbeds and Research Infrastructures for the Development of Networks and Communities, TRIDENTCOM 2010

作者： Güneş, Mesut Hahm, Oliver Schleiser, Kaspar Distributed Embedded Systems Computer Systems and Telematics Institute of Computer Science Freie Universität Berlin Germany

来源：评论

学校读者我要写书评

暂无评论

Growth- and entropy-based SOA measurement: Vision and approach in a large scale environment

Growth- and entropy-based SOA measurement: Vision and approa...

引用

Joint Conference of the 21st International Workshop on Software Measurement, IWSM 2011 and the 6th International Conference on Software Process and Product Measurement, MENSURA 2011

作者： Fiegler, Anja Dumke, Reiner R. Faculty of Computer Science Institute for Distributed Systems Otto von Guericke University Magdeburg Germany

ISBN: (纸本)9780769544977

Service-oriented architectures (SOA) can be considered as an enabling methodology for Cloud Computing and the IT's industrialization, standardization and commodity approach. The efforts to effectively introduce SOA were driven by the evermore increasing complexity and volume of information to be consumed. This paper discusses in this context some major quality characteristics of SOA systems and new measurement approaches, considering complex IT systems and digital ecosystems. This approach is based on growth models related to SOA's reference architecture as well as diversity and entropy. On a field test certain metrics are applied to a real large scale SOA system. As a result some major and important characteristics of the SOA system can be proven and weak structures in services orchestrations exposed. © 2011 IEEE.

关键词： Entropy

来源：评论

学校读者我要写书评

暂无评论

External interference-aware distributed channel assignment in wireless mesh networks

External interference-aware distributed channel assignment i...

引用

5th International Conference on Mobile Ubiquitous Computing, systems, Services and Technologies, UBICOMM 2011;3rd International Workshop on Pervasive Computing in Embedded systems, PECES 2011

作者： Juraschek, Felix Güneş, Mesut Blywis, Bastian Distributed Embedded Systems - Institute of Computer Science Freie Universität Berlin Berlin Germany

ISBN: (纸本)9781612081717

Interference is one of the major causes for performance degradation in wireless networks. Channel assignment algorithms have been proven successful to decrease the networkwide interference by using non-overlapping channels for otherwise interfering links. However, external co-located networks and devices are usually not considered in the channel assignment procedure, since they are not under the control of the network operator and their activity is therefore hard to capture. In our work we fill this gap by additionally considering the interference resulting from external devices. The novelty of this approach is that not only co-located IEEE 802.11 networks are captured, but also other sources of interference that utilize the same frequency band. We present the spectrum sensing component DES-Sense, a software solution for 802.11a/b/g that detects congested channels and does not require any changes to the *** present a first algorithm for external interference-aware channel assignment and show proof-of-concept results from the DES-Testbed, a wireless mesh network with 120 multi-radio nodes.

关键词： Mesh generation

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：