COMPUTER SYSTEM-TECHNOLOGY
A system of interconnected computers that share a central storage system and various peripheral devices such as a printers, scanners, or routers.
Detecting intruders incomputer systems
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Abstract This paper describes a real-time intrusion-detection system (IDES) that observes user be-havior on a monitored computer system and adaptively learns what is normal for individual users, groups, remote hosts, and the overall system be-havior. Observed behavior
Computer systems : a programmers perspective
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This book (CS: APP) is for programmers who want to improve their skills by learning what is going onunder the hoodof a computer system. Our aim is to explain the enduring concepts underlying allcomputer systems and to show you the concrete ways that these
Expertcomputer systems .
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Ollly recently has artificial intelligence advanced to the point that AI projects are acconiplishiiig practical results. Most of these results can be attributed to the design and use of exqoert S_l S! t illS. problem-solving coin-puter programs that can reach a level of
On the characterisation of law andcomputer systems : The normative systems perspective
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Because of its origins in the analytic study of law and ethics, it is natural to expect that the earliest and most obvious applications of deontic logic in computer science should appear in the construction of what are sometimes calledlegal expert systems| systems intended to
A guide to dynamic load balancing in distributedcomputer systems
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Summary Load balancing is the process of redistributing the work load among nodes of the distributed system to improve both resource utilization and job response time while also avoiding a situation where some nodes are heavily loaded while others are idle or doing
Computer systemsdesign and architecture
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Page 1. 1-1 Chapter 1 The General Purpose MachineComputer SystemsDesign and Architecture by V. Heuring and H. Jordan 1997 V. Heuring and H. Jordan/ Updated January, 2001 David M. ZarComputer SystemsDesign and Architecture Vincent P. Heuring and Harry
Analysis of visual motion by biological andcomputer systems
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Analysis of motion plays a central role in biological visual systems. Sophisticated mechanisms for observing, extracting, and utilizing motion exist evenin simple ani-mals. For example, the frog has efficient bug detection mechanisms that respond selectively to small,
An analysis of time-sharedcomputer systems
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Some of the aspects of the operation of time-shared, interactivecomputer systemsare analyzed. The emphasis is on the reaction of hardware systems to the demands that its users make upon it. Simply stated, the problem is to characterize both-timeshared systems
The architecture of computer hardware and systems software: an information technology approach
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Page 1. 1 The Architecture of Computer Hardware and System Software An Information Technology Approach by Irv Englander Chapter 7: The CPU and Memory Outline The Components of the CPU The Concept of Registers The Memory Unit
File placement on distributedcomputer systems
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Advances in large-scale integrated logic and communication technology coupled with the applications ex-plosion have led to distributed architectures. A distributed computersystem is basically an interconnection of processing elements, each having certain capabilities,
The efficient simulation of parallelcomputer systems
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Abstract:--An ongoing research project involves the design and evaluation of a software system for simulating parallel computers. A major goal in the development of this system was to avoid the high overhead associated with the conventional instruction-level simulation
Computer systemswith a very large address space and garbage collection
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ABSTRACT The concept of objects is beginning to gain acceptance throughout the field of computer science. A new computer system is proposed that provides hardware support for objects and object references that can be used in all applications of objects. The new system
Metric and workload effects oncomputer systemsevaluation
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Often, performance evaluation seeks to compare different system designs or implementations. Researchers expect the evaluation to reveal performance differences that will inform an educated decision regarding which design to employ or system to buy. They
Probe: A thousand-node experimental cluster forcomputer systems RESEARCH PAPER
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Garth Gibson is a Professor of Computer Science at Carnegie Mellon University and the co- founder and Chief Scientist at Panasas, Inc. He has an MS and PhD from the University of California at Berkeley and a BMath from the University of Waterloo in Canada. Garths
On the use of performance models to design self-managingcomputer systems
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Computer systemsare becoming extremely complex. Complexity stems from the large number and heterogeneity of a systems hardware and software components, from the multi- layered architecture used in the systems design, and from the unpredictable nature of the
An Adaptive Data Placement Scheme for Parallel DatabaseComputer Systems .
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The capacity and performance of database management system (DBMS) using a conventional (von Newmann-type) computer are limited by the total I/O channel bandwidth, the aggregate processing power, and the amount of main memory. With the advent of micro-
Computer Systems : Reliable full-duplex file transmission over half-duplex telephone line
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A field-proven scheme for achieving reliable duplex transmission over a half-duplex communication line is presented, and to demonstrate the difficulty of the problem, another similar scheme, which is only slightly unreliable, is also presented. A flowchart for the
Designing ControllableComputer Systems .
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Abstract Adaptive control theory is emerging as a viable approach for the design of self- managedcomputer systems . This paper argues that the systems community should not be concerned with the design of adaptive controllersthere are off-the-shelf controllers that can
Model-based vulnerability analysis ofcomputer systems
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Abstract Vulnerability analysis is concerned with the problem of identifying weaknesses in computer systemsthat can be exploited to compromise their security. Most vulnerabilities arise from unexpected interactions between different system components such as server
Tradeoffs in designing organizations: Implications for new forms of human organizations andcomputer systems
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Abstract In this paper, we dcvclop a model that can be applied to a wide range of problcms in organi/ation thlicory and computer science including:(1) cxplaining historical changes in the strunctre of American business organi/ations.(2) predicting changes in the structure of
Human input tocomputer systems : theories, techniques and technology
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The following is a working draft of a book which I am (far too) slowly trying to complete. The manuscript began as a collection of notes, rough sketches, and reprints which I used in tutorials that I have given, mainly at past SIGCHI and SIGGRAPH Conferences. Some sections of the manuscript
Securecomputer systems : Mathematical foundations
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Page 1. i SecureComputer Systems : Mathematical Foundations November, 1996 An electronic reconstruction by Len LaPadula of the original MITRE Technical Report 2547, Volume I titled SecureComputer Systems : Mathematical Foundationsby D. Elliott Bell and Leonard J. LaPadula
Resource allocation in multiprocesscomputer systems .
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H! [41 ACKNOWLEDGEMENT Most of all I must thank Jack Dennis, my advisor, for his continuing confidence in me, and for his assistance through all the various stages of doctoral study at MIT Especial thanks go to RM Fano and JH SaLtzer, who were my thesis readers, for many discerning
A Theory of Computer Semiotics: semiotics approaches to construction and assessment ofcomputer systems
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Semiotics also includes the general principles that underlie all sign systems. It is thus more comprehensive than linguistics--very much more, because there is a semiotic dimension to practically every human artifact.(Indeed, since we canread inmeanings to natural events,
Progress on defining standardized classes for comparing the dependability ofcomputer systems
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Abstract A number of the industrial partners of the IFIP WG 10.4 Dependability Benchmarking SIG (SIGDeB) have identified a set of standardized classes for characterizing the dependability ofcomputer systems . The proposed classification system seeks to enable
Real-time interaction among composers, performers, andcomputer systems
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Abstract As the computer becomes more and more ubiquitous in society, the term interactivehas become a widely used, but misunderstood term. In this paper, I discuss definitions of interactive music and interactive music systems, performance issues in
An Evaluation of DSSA-ADAGE Technology , Crosstalk
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6 Conclusions Intelligent components will be a centerpiece for future tools of software development; they automatically perform customizations and optimizations that are specific to the system in which they are usedmodifications that today are performed by hand by
A formal approach tocomputer systemsrequirements documentation
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Abstract. This paper demonstrates how the extended duration calculus can be used to support the approach to documentation ofcomputer systemspresented by in. This approach uses the general concept of mathematical relations to specify properties, while the calculus of du-
Computer systems RESEARCH PAPER: The pressure is on
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Composability. We must be able to compose systems from components of multiple scales and from multiple semantic domains. As a start, we need effective models of composability, particularly ones that meet the requirements of dynamic structures, timing deadlines, and Page 1. Introduction Qualitative research methods are being used increasingly in evaluation studies, including evaluations ofcomputer systemsand information tech- nology. This chapter provides an overview of the nature and
Anomalous relations among various performance objectives in distributedcomputer systems
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Abstract Distributedcomputer systemsconsist of a set of heterogeneous host computers (ie, nodes) connected by a communication network. A job that arrives at a node may either be processed locally or transferred to another node for remote processing, which we call load
Evolution of finishedcomputer systems
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Abstract The notion ofcomputer systemsas finished products that operate in a stable environment leads to viewing system enhancement as an error correcting activity. However computer systemschange due to new requirements stemming from organisational changes
Knowledge-based task analysis for human- computer systems
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The analysis of tasks is a fundamental and important process in many areas of applied behavioural science. Task analysis offers methods for exploring relationships between the properties of systems and user performance. Traditionally (eg. see Miller, 1962), the analyst
A gentle introduction to formal verification ofcomputer systemsby abstract interpretation
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Software is in all mission-critical and safety-critical industrial infrastructures since it is, in principle, the cheapest and most effective way to control complex systems in real time. However, all computer scientists have experienced costly bugs in embedded software. The failure
Load-balanced task allocation in locally distributedcomputer systems
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ABSTRACT A task force is a distributed program which consists of a set of communicating tasks. This paper presents an algorithm for allocating the tasks in a task force to a set of execution sites in a locally distributed computer system. The main objective of this dynamic
Technical and human issues in computer-based systems security
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AbstractComputer systemsand internet are becoming pervasive in our everyday life This survey paper will not provide a concrete solution on how to securecomputer systems but it highlights the socio-technical approach that we must take in order to obtain that goal
Human Computer Interaction Design of the LP-ITS: Linear Programming Intelligent Tutoring Systems
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The effectiveness of the user-computer interface has become increasingly important ascomputer systemshave become useful tools for persons not trained in computer science 61Computer systemsexist within a larger social, organizational and work setting (U1)
File migration in distributedcomputer systems
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In the last decade the areas of computing and communications have been converging rapidly. In the communications industry, computers are used extensively for switching, routing, maintenance and a number of so called enhanced services, like message storing
Situation-aware interface design: an interaction constraints model for finding the right interaction for mobile and wearablecomputer systems
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ABSTRACT The design of mobile and wearable computing devices involves decisions about how the user interacts with the hardware and software composing the device. Since applications of, and usage environments for, mobile and wearable computers has varied
Achieving consensus in fault-tolerant distributedcomputer systems : protocols, lower bounds, and simulations
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Abstract: We give several new results in the area of fault-tolerant distributed computing. Our specific interest is consensus protocols, that is, protocols that enable correct processors to reach agreement in the presence of disruptive behavior by faulty processors. The results
Survey on power management techniques for energy efficientcomputer systems
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Abstract In this paper we describe different power management techniques aiming to reduce power consumption incomputer systems . On one hand, static techniques, applied at design time, have been presented with a variety of simulation and measurement tools, targeting
Fundamentals of SecureComputer Systems
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architecture for security it covers a wide range of computer hardware system software and data concepts from a abebooks computer architecture and security fundamentals of designing securecomputer systems9781118168813 by Fundamentals of SecureComputer is the density, U is the macroscopic velocity,is the pressure,is the total energy, and is the time between molecular collisions. An analysis shows that QGD system (5) (7) differs from the classical Navier Stokes (N S) equa tions in O (Kn2) terms, where Kn is
Usability as a Goal for the Design ofComputer Systems .
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Abstract The goal of all software engineering is to constructcomputer systemsthat people find usable and will use. Usability is an overall goal that encompasses both system functionality and user interface issues. Assessing usability is vital for those acquiring
Trace driven simulation in research on computer architecture and operating systems
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Trace driven simulation has been used for research oncomputer systemsfor many years. Among the early studies, it is worth citing [16] which was an early and excellent study of paging algorithms, and , which was a very interesting study of CPU scheduling
An Overview of the Research in Mobile/Wearable Computer-Aided Engineering Systems in the Advanced Infrastructure Systems Laboratory at Carngie Mellon
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testing speech-controlled inspection applications; (2) Situation-aware Interface Design: finding the right interaction for mobile and wearablecomputer systems ; and (3) Information and knowledge-bases for creating these mobile and wearablecomputer systems ; (3) new
13. Acting Systems Designan Action Theoretical Approach to the Design of Man- Computer Systems
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SUMMARY Both man and computer can be seen as performing perception, cognition, and motor based actions. Hence a design process is needed which recognizes that in man- computer systemsthere will be an interaction between two acting systems. The tasks of man
Characterizingcomputer systemsworkloads
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Abstract The performance of any system cannot be determined without knowing the workload, that is, the set of requests presented to the system. Workload characterization is the process by which we produce models that are capable of describing and reproducing
Using expert systems to manage distributedcomputer systems
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A distributed computer system (or simply a distributed system) is a set of networked computers which not only communicate with each other, but typically share resources and often work together to solve problems. Because they are comprised of multiple processors
Tight bounds on average response time for time-sharedcomputer systems
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The main thrust of the paper is to establish tight upper and lower bounds on the average response time. All these equilibrium results are good for Poisson arrivals, arbitrary service time distribution and arbitrary (but work-conserving) scheduling algorithms which can take
Modeling and metrology for expedient analysis and design ofcomputer systems
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Abstract Recent increases in component level power dissipation have elevated system level thermal analysis to an important and increasingly indispensable role in the design of computers. Indeed, in the near future, even low end desktop personal computer workstations
Using visualization to understand the behavior ofcomputer systems
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Abstract Ascomputer systemscontinue to grow rapidly in both complexity and scale, developers need tools to help them understand the behavior and performance of these systems. While information visualization is a promising technique, most existingcomputer I. The characteristics crucial for potential computer performance: cycle frequency, time of execution of operations of various types and operations per second, working memory capacity, access time to working memory and external memory, speed of exchange between
Revisiting Original Philosophy of Fifth GenerationComputer SystemsProject.
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Looking back, it was three years after the last conference in October, 1981 and two and half years ago we embarked on our Fifth GenerationComputer Systems(FGCS) Project. Thevarious experienceswe have had in the past two and a half years reinforce our
Heuristic modeling using rule-basedcomputer systems
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, ABSTRACT This Paper discusses a recent effort at The Rand Corporation to apply heuristic modeling techniques t9 the topic. fJ of international terrorism. By heuristic model we mean an information pr-ocessing model described in terms of heuristics (rules of thumb) which A manufacturing company can choose a formidable array of computer assisted facilities to enhance production efficiency. On the shop floor, CNC machine tools are well established, while FMS and DNC systems, coupled to robots and guided vehicles are finding increasing application.
FMOL: A graphical and net oriented approach to interactive sonic composition and real-time synthesis for low costcomputer systems
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Abstract Faust Music On Line (FMOL), is a software project for real-time synthesis and interactive and collective music composition through the net, conceived by Sergi Jordà and developed by the former and Toni Aguilar, after a proposal by the Catalan theatre and
Interconnecting HeterogeneousComputer Systems
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The Computer Science Department of the University of Washington has recently launched a significant research and development project whose goal is to simplify the accommodation of heterogeneity. In almost every advanced computing environment, the proliferation of
The finite source queueing model for ultiprogrammedcomputer systemswith different CPU times and different I/O times
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Abstract This paper discusses the finite source queueing model as it applies to a multiprogrammed computer system. The system processes N jobs using r Central Processing Units (CPUs) where r^ N. The jobs emanate from peripheral devices, terminals, -SOFTWARE SALES SERVICE-https://www.engpaper.net--