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Distriblets: Java-based distributed computing on the Web

INTERNET RESEARCH-ELECTRONIC NETWORKING APPLICATIONS AND POLICY 1999年第1期9卷 35-40页

作者： Finkel, D Wills, CE Brennan, B Brennan, C Worcester Polytech Inst Dept Comp Sci Worcester MA 01609 USA So New England Telecommun New Haven CT USA ATI Res Marlborough MA USA

Describes a system for using the World Wide Web to distribute computational tasks to multiple hosts on the Web. A programmer with a computation to distribute registers it with a Web server. An idle host uses this server to identify available computations and downloads a Java class to perform the computation - we call this class a distriblet. The paper describes the programs written to carry out the load distribution, the structure of a distriblet class, and our experience in using this system.

关键词： computation computer languages distributed data processing distribution Internet

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Architectures for secure portable executable content

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INTERNET RESEARCH-ELECTRONIC NETWORKING APPLICATIONS AND POLICY 1999年第1期9卷 16-24页

作者： Gritzalis, S Aggelis, G Spinellis, D TEI Athens Dept Informat Aegaleo Greece Univ Athens Aegean Res Unit Dept Informat & Commun Syst Athens Greece Univ Athens Dept Informat Athens Greece

The Java programming language supports the concept of downloadable executable content;a key technology in a wide range of emerging applications including collaborative systems, electronic commerce, and Web information services. Java enables the execution of a program, on almost any modem computer regardless of hardware configuration and operating system. Safe-Tcl was proposed as an executable content type of MIME and thus as the standard language for executable contents within e-mail messages. However, the ability to download, integrate, and execute code from a remote computer, provided by both Java and Safe-Tcl, introduces serious security risks since it enables a malicious remote program to obtain unauthorised access to the downloading system's resources. In this paper, the two proposed security models are described in detail and the efficiency and flexibility of current implementations are evaluated in a comparative manner. Finally upcoming extensions are discussed.

关键词： computer architectures computer programming distributed data processing Internet security

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Monitoring Architectural Heritage by Wireless Sensors Networks: San Gimignano - A Case Study

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SENSORS 2014年第1期14卷 770-778页

作者： Mecocci, Alessandro Abrardo, Andrea Univ Siena Dept Informat Engn & Math Sci I-53100 Siena Italy

This paper describes a wireless sensor network (WSN) used to monitor the health state of architectural heritage in real-time. The WSN has been deployed and tested on the "Rognosa" tower in the medieval village of San Gimignano, Tuscany, Italy. This technology, being non-invasive, mimetic, and long lasting, is particularly well suited for long term monitoring and on-line diagnosis of the conservation state of heritage buildings. The proposed monitoring system comprises radio-equipped nodes linked to suitable sensors capable of monitoring crucial parameters like: temperature, humidity, masonry cracks, pouring rain, and visual light. The access to data is granted by a user interface for remote control. The WSN can autonomously send remote alarms when predefined thresholds are reached.

关键词： cultural heritage and architectural buildings real-time monitoring wireless sensor networks distributed data processing mac protocols remote control

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Mobile access to the Internet: a mediator-based solution

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INTERNET RESEARCH 1999年第1期9卷 58-65页

作者： Alanko, T Kojo, M Liljeberg, M Raatikainen, K Univ Helsinki Dept Comp Sci SF-00510 Helsinki Finland

Nomadicity is a new challenge for computing and communication technologies. Modern cellular telephone systems extend the usability of portable personal computers enormously. A nomadic user can be given ubiquitous access to remote information stores and computing services. However, the behaviour of wireless links creates severe inconveniences within the traditional data communication paradigm. In this paper we give an overview of the problems related to wireless mobility We also present a new software architecture for mastering the problems and discuss a new paradigm for designing mobile distributed applications. The key idea in the architecture is to place a mediator, a distributed intelligent agent, between the mobile node and the wireline network.

关键词： cellular communications computer architectures distributed data processing Internet mobile communications

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Strategies for content migration on the World Wide Web

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INTERNET RESEARCH-ELECTRONIC NETWORKING APPLICATIONS AND POLICY 1999年第1期9卷 25-34页

作者： Evans, MP Phippen, AD Mueller, G Furnell, SM Sanders, PW Reynolds, PL Univ Plymouth Sch Elect Commun & Elect Engn Network Res Grp Plymouth PL4 8AA Devon England Univ Plymouth Sch Comp Plymouth PL4 8AA Devon England

The World Wide Web has experienced explosive growth as a content delivery mechanism, delivering hypertext files and static media content in a standardised way. However, this content has been unable to interact with other content, making the Web a distribution system rather than a distributed system. This is changing, however, as distributed component architectures are being adapted to work with the Web's architecture. This paper tracks the development of the Web as a distributed platform, and highlights the potential to employ an often neglected feature of distributed computing: migration. Argues that all content on the Web, be it static images or distributed components, should be free to migrate according to either the policy of the server, or the content itself. The requirements of such a content migration mechanism are described, and an overview of a new migration mechanism, currently being developed by the authors, is presented.

关键词： distributed data processing distribution Internet

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APPLYING VIDEOTEX IN ORGANIZATIONS

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data processing 1984年第6期26卷 7-11页

作者： THOMAS, H RODDY, J Aregon Internation Ltd 17 Lincoln's Inn Fields London WC2A 3EG UK. Tel: 01-831 7536

The success of videotex in 1984 is measured in terms of its contribution to cost effective and productive distributed data processing. Videotex systems are installed in over 200 sites in the UK and contribute significantly to the commercial success of a wide variety of organizations. In this article, the authors provide a set of commonsense rules, based on experience, for data processing managers and others investigating the implementation of open systems in the corporate environment and beyond.

关键词： videotex distributed data processing telecommunications

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SANE: Smart Networks for Urban Citizen Participation 26

SANE: Smart Networks for Urban Citizen Participation

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26th International Conference on Telecommunications (ICT)

作者： Bornholdt, Heiko Jost, David Kisters, Philipp Rottleuthner, Michel Bade, Dirk Lamersdorf, Winfried Schmidt, Thomas C. Fischer, Mathias Univ Hamburg Hamburg Germany Hamburg Univ Appl Sci Hamburg Germany

ISBN: (纸本)9781728102733

The increasing urbanization results in a rising demand for smart city platforms that optimize limited resources and thus save resources and increase the quality of living at the same time. Several systems have evolved in the past to address such issues by providing platforms for collecting, sharing, and processing urban data. However, these existing platforms only partially address challenges like fostering the participation of citizens, protecting their privacy, and assuring certain levels of quality of information. In this paper, we present the architecture of SANE as an open, citizen-centric, scalable, and privacy-preserving smart city platform. SANE is intended as open platform on which citizens can contribute data but also hardware, without any central authority or control. Moreover, citizens maintain full control on their data and its usage. SANE comes with rich and distributed data analytics functionality that is intended to help citizens to answer data-related question in the context of smart cities.

关键词： Smart City Internet of Things Service-oriented Middleware Participatory Sensing distributed data processing Quality of Information

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On the Potential of Execution Traces for Batch processing Workload Optimization in Public Clouds

On the Potential of Execution Traces for Batch Processing Wo...

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9th IEEE International Conference on Big data (IEEE Bigdata)

作者： Scheinert, Dominik Alamgiralem, Alireza Bader, Jonathan Will, Jonathan Wittkopp, Thorsten Thamsen, Lauritz Tech Univ Berlin Berlin Germany Humboldt Univ Berlin Germany

ISBN: (纸本)9781665439022

With the growing amount of data, data processing workloads and the management of their resource usage becomes increasingly important. Since managing a dedicated infrastructure is in many situations infeasible or uneconomical, users progressively execute their respective workloads in the cloud. As the configuration of workloads and resources is often challenging, various methods have been proposed that either quickly profile towards a good configuration or determine one based on data from previous runs. Still, performance data to train such methods is often lacking and must be costly collected. In this paper, we propose a collaborative approach for sharing anonymized workload execution traces among users, mining them for general patterns, and exploiting clusters of historical workloads for future optimizations. We evaluate our prototype implementation for mining workload execution graphs on a publicly available trace dataset and demonstrate the predictive value of workload clusters determined through traces only.

关键词： distributed data processing Workload Optimization Cloud Computing Performance Modeling

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Information Spaces for Big data processing: Unification and Parallelization of Sequential Information Accumulation Procedures 21

Information Spaces for Big Data Processing: Unification and ...

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21st IEEE Conference on Business Informatics (IEEE CBI)

作者： Golubtsov, Peter Lomonosov Moscow State Univ Fac Phys Moscow Russia Natl Res Univ Higher Sch Econ Fac Business & Management Moscow Russia

ISBN: (纸本)9781728106502

In large-scale research, data are usually collected on many sites, have a huge volume, and new data are constantly generated. Since it is often impossible to collect all the relevant data on a single computer, much attention is paid to the algorithms that provide sequential or parallel accumulation of information and do not need to store all the original data. As an example of information accumulation, the Bayesian updating procedure for linear experiments is analyzed. The corresponding information spaces are defined and the relations between them are studied. It is shown that processing can be unified and simplified by introducing a special canonical form of information representation and transforming all the data and the original prior information into this form. Thanks to the rich algebraic properties of the canonical information space, the sequential Bayesian procedure allows various parallelization options that are ideally suited for distributed data processing platforms, such as Hadoop MapReduce. This opens up the possibility of a flexible and efficient scaling of information accumulation in distributed data processing systems.

关键词： distributed data processing Bayesian information update big data information spaces

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Modeling data Communications of Wireless Sensor Networks Based on MFM Model and Analyzing Its Stability Using Wave Advanced Model (WAM) 29

Modeling Data Communications of Wireless Sensor Networks Bas...

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29th Iranian Conference on Electrical Engineering (ICEE)

作者： Tofighi, Saeedreza Shafiee, Masoud Amirkabir Univ Technol Dept Elect Engn Tehran Iran

ISBN: (纸本)9781665433655

In this paper, a method for modeling distributed communications in regular grid wireless sensor networks is presented using the Modified Fornasini-Marchesini (MFM) model of two-dimensional (2-D) systems. Also, quantization schemes have been used to model in-node and inter-node computations. Furthermore, a method has been proposed for distributed data processing in the wireless sensor network. The stability of this network has been investigated using a Wave Advanced Model (WAM) and considering quantization relations.

关键词： distributed data processing wireless sensor networks modified fornasini-marchesini model wave advanced model (WAM) quantization

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