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1992 Joint Symposia Digest: IEEE Antennas and Propagation Society International Symposium, AP-S 1992

作者： Cha, Chung-Chi Syracuse Research Corporation Merrill Lane SyracuseNY13210 United States

ISBN: (纸本)0780307305

RCS (radar cross section) computation has been a main area of research work at the Syracuse Research Corporation (SRC) for a number of years. Sponsorships of projects in a variety of application areas over the years have made continuous research work possible in the field of electromagnetic scattering and the accompanying simulation software development. SRC's work to date in this area is summarized. Particular attention is given to the active library concept for target identification. An RCS prediction software named SRCRCS and an accompanying CAD modeling package named SCAMP are discussed. Applications of the simulation software are considered.< >

关键词： Computational modeling Radar cross section Solid modeling Predictive models Shape message-oriented middleware Application software Software libraries Radar tracking Wideband

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Extending middleware frameworks for Wireless Sensor Networks

Extending middleware frameworks for Wireless Sensor Networks

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International Conference on Ultra Modern Telecommunications and Workshops (ICUMT)

作者： Syed Rehan Afzal Christophe Huygens Wouter Joosen IBBT DistriNet Research Group Department of Computer Science Katholieke Universiteit Leuven Leuven Belgium

We define sensor middleware as the binding code mainly running between the sensor OS and applications providing programming abstractions to bridge the gap between application developers and low-level hardware. Hence it serves the purpose of simplified integration of components developed by multiple technology vendors. middleware for distributed systems is a relatively mature research area with a considerable amount of work done on the aforementioned topics. In this paper we explain why standard distributed systems middleware solutions are not suitable to address wireless sensor network (WSN) problems. Illustrated by a health monitoring use case, we propose an enhanced middleware framework that better addresses the needs of WSN applications.

关键词： Wireless sensor networks Application software Hardware message-oriented middleware Operating systems Chemical technology Data security Databases Mobile agents Virtual machining

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Making Software Work Together

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Computer 1999年第5期32卷 51-52页

作者： Horn, Chris IONA Technologies Ireland

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Native Actors: How to Scale Network Forensics 14

Native Actors: How to Scale Network Forensics

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SIGCOMM Conference

作者： Vallentin, Matthias Charousset, Dominik Schmidt, Thomas C. Paxson, Vern Waehlisch, Matthias Univ Calif Berkeley Berkeley CA 94720 USA HAW Hamburg Hamburg Germany ICSI UC Berkeley Berkeley CA USA FU Berlin Berlin Germany

ISBN: (纸本)9781450328364

When an organization detects a security breach, it undertakes a forensic analysis to figure out what happened. This investigation involves inspecting a wide range of heterogeneous data sources spanning over a long period of time. The iterative nature of the analysis procedure requires an interactive experience with the data. However, the distributed processing paradigms we find in practice today fail to provide this requirement: the batch-oriented nature of Map Reduce cannot deliver sub-second round-trip times, and distributed in-memory processing cannot store the terabytes of activity logs needed to inspect during an incident. We present the design and implementation of Visibility Across Space and Time (VAST), a distributed database to support interactive network forensics, and libcppa, its exceptionally scalable messaging core. The extended actor framework libcppa enables VAST to distribute lightweight tasks at negligible overhead. In our live demo, we showcase how VAST enables security analysts to grapple with the huge amounts of data often associated with incident investigations.

关键词： Security Network Forensics message-oriented middleware

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A Service-oriented Framework for distributed heterogeneous Data and System Integration for Continuous Care Networks

A Service-Oriented Framework for distributed heterogeneous D...

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7th IEEE Consumer Communications and Networking Conference

作者： Paganelli, Federica Parlanti, David Giuli, Dino Natl Interuniv Consortium Telecommun CNIT Florence Italy Univ Florence Dept Elect & Telecommun I-50121 Florence Italy

ISBN: (纸本)9781424451753

Care models for chronic condition treatment place point-of-care in the community and at patient's home and imply an organized care system ("continuous care network"). The contribution of this work consists in the proposal of a service framework to support information acquisition, integration and sharing in continuous care networks. The framework is based on a service-oriented message-oriented middleware ("SAI middleware") easing the development of context-aware and information integration applications. We describe an ongoing case study aiming at demonstrating the use of the service framework in a reference application scenario for patient conditions monitoring, alarm detection and policy-based handling.

关键词： chronic conditions context awareness service oriented architecture message-oriented middleware

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A 2.18-Microsecond Megabit Core Storage Unit

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IRE Transactions on Electronic Computers 1961年第2期EC-10卷 233-237页

作者： Allen, C.A. Bruce, G.D. Councill, E.D. Data Systems Div. IBM Corp. Poughkeepsie N. Y. United States

A magnetic core memory is described which has a read-write cycle time of 2.18 μsec, an access time of 1 μsec, and a storage capacity of 1,179,648 bits. The array configuration and the design of the driving system are shown. The core and transistor requirements are discussed, and a description is given of the sensing and the driving circuitry. Design factors which governed the choice of the 3-dimensional system organization are presented. COPYRIGHT © 1961—THE INSTITUTE OF RADIO ENGINEERS, INC.

关键词： Magnetic cores Solid state circuits Ferrites Delay effects Logic design Logic programming Driver circuits message-oriented middleware Magnetic noise

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Empirical study of defuzzification 22

Empirical study of defuzzification

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22nd International Conference of the North-American-Fuzzy-Information-Processing-Society (NAFIPS)

作者： Lancaster, SS Wierman, MJ Creighton Univ Omaha NE 68178 USA

ISBN: (纸本)0780379187

The most important application of fuzzy logic is designing controllers. Fuzzy logic controllers (FLC) are much easier to design than non-linear controllers of similar capabilities. The rules that a designer needs to create are often based on their current experience and knowledge. Conventional FLCs use Center of Gravity or Mean of Maxima defuzzification methods, though other methods have been studied This paper compares the efficiency of many different models of the defuzzification process. The goal is to examine the accuracy of the output data and the amount of processing time required A simple controller that backs a truck up to a gate is used in the study. All of the variables are granulated with trapezoidal fuzzy numbers. Some of the defuzzification methods examined are Fast Center of Gravity, Mean of Maxima, True Center of Gravity and various new methods that have shown promise in application.

关键词： Application software Fuzzy logic Fuzzy sets Gravity Logic design message-oriented middleware Production Shape Space shuttles USA Councils

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Group communication based on standard interfaces 2

Group communication based on standard interfaces

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2nd IEEE International Symposium on Network Computing and Applications

作者： Wiesmann, M Défago, X Schiper, A Swiss Fed Inst Technol Distributed Syst Lab Informat & Commun Inst CH-1015 Lausanne Switzerland

ISBN: (纸本)0769519385

While group communication system have been proposed for some time, they are still not used much in actual systems. We believe that one reason for this is the lack of standardisation of group communication system interfaces. The paper proposes an architecture, using the standard decomposition into services, were services are based on standard interfaces: both interactions between services and interactions with the application use existing, open standards. A decomposition of the group communication into services is presented, along with a description of applicable standards. As an example, a group membership service based on the LDAP standard is discussed.

关键词： Communication standards Communications technology Computer architecture Context Fault tolerant systems Intersymbol interference message-oriented middleware Prototypes Web sites Wheels

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Multistatic antennas and non-linear inversion for mine-detection GPR 2

Multistatic antennas and non-linear inversion for mine-detec...

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2nd International Workshop on Advanced Ground Penetrating Radar

作者： Fischer, C Younis, M Wiesbeck, W Univ Karlsruhe IHE D-76128 Karlsruhe Germany

ISBN: (纸本)9076928045

This paper deals with the utilization of "angular diversity" in GPR, an approach, which in comparison to the wide-spread "fixed-offset" GPR helps to improve clutter robustness as well as image resolution. The latter can be achieved by means of enhanced processing techniques-compared to the widely use SAR or tomographic approaches-which rely on the availability of angular diversity data. The paper discusses data acquisition by means of multistatic measurement setups and numerical MoM simulations. The "Factorization method" is proposed as an image formation scheme, which, amongst other advantages, requires only low computational effort. 3-D imaging results from numerical datasets in free-space and a stratified background are presented and discussed.

关键词： Clutter Frequency diversity Geophysics computing Ground penetrating radar Hardware message-oriented middleware Radar antennas Receiving antennas Transmitters Transmitting antennas

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Implementing IoT Systems in Service-oriented Architecture

Implementing IoT Systems in Service-Oriented Architecture

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Ural Symposium on Biomedical Engineering, Radioelectronics and Information Technology (USBEREIT)

作者： Papulovskaya, Nataliya Izotov, Ilya Orekhov, Pavel Ural Fed Univ Ekaterinburg Russia

ISBN: (纸本)9781538683644

The article presents the analysis of the existing Internet of Things ( IoT) systems, identifies three levels of application: household, civil and industrial. The shortcomings of the implementations associated with the popular client-server architecture are revealed. The possibility of building scalable solutions in a service-oriented architecture is considered. Argued the merits of such decisions, providing compatibility, fault tolerance and security at any level of the application of the IoT system. The description of the developed automatic room ventilation system and intersection counting system with data transmission over a radio channel are given as examples.

关键词： scalability microcontrollers service-oriented systems engineering message-oriented middleware client-server systems Internet of Things

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