To solve performance problems in modern computing infrastructures, often comprising thousands of servers running hundreds of applications, spanning multiple tiers, you need tools that go beyond mere r
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"What You Need to Know About Your Computer System: IT Management for Small Business and Professional Offices" is a non-technical guide for business owners and office managers which tells precisely wha
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Computer System Organization: The B5700/B6700 Series focuses on the organization of the B5700/B6700 Series developed by Burroughs Corp. More specifically, it examines how computer systems can (or shou
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The proceedings of the fifth workshop in this subject continue the trend set by the previous four and discusses some of the current problems involved in the design and production of safe real-time com
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Computer System Security: Basic Concepts and Solved Exercises is designed to expose students and others to the basic aspects of computer security. Written by leading experts and instructors, it covers
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Describes the security requirements that may be imposed on the DoD Trusted Computer System Evaluation Criteria for trusted computer communications network systems.
A computer system often has to handle computational jobs with highly varying CPU service time requirements. In principle, unrestricted processor sharing can be useful in handling such demands. In prac
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Provides a standard to manufacturers for security features to build into their new and planned commercial products in order to provide widely available systems that satisfy trust requirements for sens
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This book presents a paradigm for designing new generation resilient and evolving computer systems, including their key concepts, elements of supportive theory, methods of analysis and synthesis of IC
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SECTION IV RESULTS AND DISCUSSION MAINTAINING MASS
SPECTROMETER STABILITY Instability in the mass spectrometer may cause drift
that can invalidate the mass number calibration file used by the data system,
leading to ...
As the complexity of digital systems grew, the need arose for efficient packaging
of the system components. Starting in the mid 50's, individual devices were
placed on printed-circuit boards. As the size and the complexity of the modules
grew ...
To solve performance problems in modern computing infrastructures, often comprising thousands of servers running hundreds of applications, spanning multiple tiers, you need tools that go beyond mere reporting. You need tools that enable performance analysis of application workflow across the entire enterprise. That's what PDQ (Pretty Damn Quick) provides. PDQ is an open-source performance analyzer based on the paradigm of queues. Queues are ubiquitous in every computing environment as buffers, and since any application architecture can be represented as a circuit of queueing delays, PDQ is a natural fit for analyzing system performance. Building on the success of the first edition, this considerably expanded second edition now comprises four parts. Part I contains the foundational concepts, as well as a new first chapter that explains the central role of queues in successful performance analysis. Part II provides the basics of queueing theory in a highly intelligible style for the non-mathematician; little more than high-school algebra being required. Part III presents many practical examples of how PDQ can be applied. The PDQ manual has been relegated to an appendix in Part IV, along with solutions to the exercises contained in each chapter. Throughout, the Perl code listings have been newly formatted to improve readability. The PDQ code and updates to the PDQ manual are available from the author's web site at www.perfdynamics.com
IT professionals, system administrators, software developers, and performance
test engineers. Many of the currently available books on computer performance
analysis fall into one of three distinct camps: 1. Books that discuss tuning the ...
"What You Need to Know About Your Computer System: IT Management for Small Business and Professional Offices" is a non-technical guide for business owners and office managers which tells precisely what they need to do to keep their Windows computer systems running efficiently and their business information safe.
... and Copy or Asset Number Date Out Signed Out By Date Returned. YOUR
COMPUTER SYSTEM. YOUR COMPUTER SYSTEM Highly Useful Websites
These were top-notch. Copyright © 2009 Cheryl Tupper. Software Sign-Out
Sheet.
Computer System Organization: The B5700/B6700 Series focuses on the organization of the B5700/B6700 Series developed by Burroughs Corp. More specifically, it examines how computer systems can (or should) be organized to support, and hence make more efficient, the running of computer programs that evolve with characteristically similar information structures. Comprised of nine chapters, this book begins with a background on the development of the B5700/B6700 operating systems, paying particular attention to their hardware/software architecture. The discussion then turns to the block-structured processes involved in the B6700 job, which consists of a time-invariant algorithm and a time-varying data structure which is the record of execution of that algorithm. Subsequent chapters deal with the basic data structures for B6700 algorithms; task attributes and the creation and coordination of tasks; stack structure and stack ownership; and software interrupts. Storage control strategies as well as the pros and cons of B6700 are also considered, along with some hardware details of procedure entry and return and tasking. This monograph is intended for computer center directors, other computer professionals, and serious students in computer science who have an interest in the subject of computer organization.
For the past ten years the Burroughs Corporation has been designing and
producing computer systems whose organization and whose hardware/software
designs have been significantly different and daring. These Burroughs systems
have ...
The proceedings of the fifth workshop in this subject continue the trend set by the previous four and discusses some of the current problems involved in the design and production of safe real-time computer systems. Topics covered include software quality assurance, software fault tolerance, design for safety, and reliability and safety assessment. Every paper details the theoretical and practical problems involved in the development of safe systems and should therefore be of interest to all those involved in systems design.
V3) for a similar error of the three versions, may lead to system failure. Each
programming team may make independent errors, labeled as IE(Vi) for an
independent error in version i, during the design and implementation of the
version. During ...
Computer System Security: Basic Concepts and Solved Exercises is designed to expose students and others to the basic aspects of computer security. Written by leading experts and instructors, it covers e-mail security; viruses and antivirus programs; program and network vulnerabilities; firewalls, address translation and filtering; cryptography; secure communications; secure applications; and security management. Written as an accompanying text for courses on network protocols, it also provides a basic tutorial for those whose livelihood is dependent upon secure systems. The solved exercises included have been taken from courses taught in the Communication Systems department at the EPFL. .
Computer and Communication Sciences COMPUTER SYSTEM SECURITY
BASIC CONCEPTS AND SOLVED EXERCISES Gildas Avoine, Pascal Junod
and Philippe Oechslin EPFL Press COMPUTER SYSTEM SECURITY BASIC ...
Describes the security requirements that may be imposed on the DoD Trusted Computer System Evaluation Criteria for trusted computer communications network systems.
-F- Flaw — an error of commission, omission, or oversight in a system that allows
protection mechanisms to be bypassed. Flaw hypothesis methodology — a
system analysis and penetration technique where specifications and
documentation ...
A computer system often has to handle computational jobs with highly varying CPU service time requirements. In principle, unrestricted processor sharing can be useful in handling such demands. In practice, it must be implemented by round-robin, and there is an overhead cost (e.g., cache thrashing and operating system management of job switching) to implementing this scheme. Furthermore, significant main-memory thrashing (i.e., increased paging activities) may occur with many jobs inside the system. To bound the cache thrashing overhead, the number of jobs actively sharing the processors has to be restricted. This is essentially restricted processor sharing. Similarly, to bound the main-memory thrashing overhead, the total number of jobs granted access to the system at any time has to be restricted as well. Because of these population size constraints, the existing analytical results for Jackson networks do not apply here. The goal of this research, therefore, is to develop analytical models for systems under the above mentioned constraints and the impact of memory thrashing overhead.
The left state is in So, denoting the system being idle. The middle three states are
in Si, denoting one job in the system. Similarly, the right six states are in S2,
denoting two jobs in the system. Such a system corresponds to a quasi-birth-
death ...
Provides a standard to manufacturers for security features to build into their new and planned commercial products in order to provide widely available systems that satisfy trust requirements for sensitive applications. Also discusses a means of evaluating the degree of trust that can be placed in computer systems for the secure processing of classified and other sensitive information. Diagram.
although they are actually two aspects of the same problem—that of assessing a
trusted system constructed of previously evaluated parts. For the first case (i.e.,
that of “hosting”), consider an operating system which has been evaluated
against ...
This book presents a paradigm for designing new generation resilient and evolving computer systems, including their key concepts, elements of supportive theory, methods of analysis and synthesis of ICT with new properties of evolving functioning, as well as implementation schemes and their prototyping. The book explains why new ICT applications require a complete redesign of computer systems to address challenges of extreme reliability, high performance, and power efficiency. The authors present a comprehensive treatment for designing the next generation of computers, especially addressing safety critical, autonomous, real time, military, banking, and wearable health care systems.
It has been shown that for constant failure rate, independent of time, the
exponential distribution is the most suitable for the reliability analysis of the useful
time of systems. The age of a system should be taken into account when
analysing ...
