trusted computer system evaluation criteria
Trusted computer system evaluation criteria dod
Ngày tải lên :
19/03/2014, 13:43
... The trusted computer system evaluation criteria defined in this document classify systems into four broad hierarchical divisions of enhanced security protection They provide a basis for the evaluation ... material Scope Page The trusted computer system evaluation criteria defined in this document apply primarily to trusted commercially available automatic data processing (ADP) systems They are also ... Defense Trusted Computer System Evaluation Criteria, " is issued under the authority of an in accordance with DoD Directive 5200.28, "Security Requirements for Automatic Data Processing (ADP) Systems,"...
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Hybrid energy system evaluation in water supply system energy production: neural network approach
Ngày tải lên :
05/09/2013, 14:58
... obtain the best hybrid system configuration for a typical water supply system State of the art review 2.1 Basic concepts Unlike a conventional power generation system, a hybrid system by definition ... of energy in water supply systems is increasingly inducing the managers of these systems in seeking optimal solutions for the improvement of energy efficiency of such systems The use of renewable ... states [4] 2.2 Hybrid energy system In the past decade the hybrid energy system has received much attention and it is a viable alternative solution as compared to systems based entirely on hydrocarbon...
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COMPUTER SYSTEM
Ngày tải lên :
22/10/2013, 15:15
... to be developed Phase – Evaluation of the system - This phase involves testing the system against the performance establised in earlier stages Phase – Intergration of the system - The ES has to ... development costs - BOOK II: COMPUTER SYSTEMS ARCHITECTURE Chapter – 2: NUMBER BASES Question Common number bases used in computer hardware operation? Decimal(denary) system: - The base is ten – ... analog signal OR Computer Modem Computer Modem Data transmission Using a Modem - To communicate between computers via telephone line, there is a need to convert signals from the computer into a...
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Tài liệu Computer system pdf
Ngày tải lên :
22/12/2013, 18:15
... to be developed Phase – Evaluation of the system - This phase involves testing the system against the performance establised in earlier stages Phase – Intergration of the system - The ES has to ... development costs BOOK II: Computer systems architecture Chapter – 2: NUMBER BASES Question Common number bases used in computer hardware operation? 13 • - Decimal(denary) system: The base is ten ... signal OR Computer modem analog signal Computer Modem Modem Data transmission Using a Modem To communicate between computers via telephone line, there is a need to convert signals from the computer...
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New response evaluation criteria in solid tumours: Revised RECIST guideline (version 1.1) doc
Ngày tải lên :
15/03/2014, 01:20
... minimum NE criteria for SD duration met, otherwise, PD criteria for SD duration met, otherwise, PD criteria for SD duration met, otherwise NE criteria for SD duration met, otherwise, PD criteria ... was formed in the mid 1990s to standardise and simplify response criteria New criteria, known as RECIST (Response Evaluation Criteria in Solid Tumours), were published in 2000.8 Key features ... liver metastases’) 4.3 Response criteria This section provides the definitions of the criteria used to determine objective tumour response for target lesions 4.3.1 Evaluation of target lesions Complete...
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An Overview of the Computer System pdf
Ngày tải lên :
29/03/2014, 08:20
... a Computer System - What is a Computer? A computer is an electronic device used to process data • A computer can convert data into information that is useful to people • A complete computer system ... Life – System Software • System software exists primarily for the computer itself, to help the computer perform specific functions • One major type of system software is the operating system ... symbols in the decimal system Numbers above use more than digit The Parts of a Computer System – Users • People are the computer' s operators, or users • Some types of computers can operate without...
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A comprehensive guide to digital electronics and computer system architecture mcgraw hill
Ngày tải lên :
05/04/2014, 22:57
... foundation in the concepts of digital logic and computer architecture Logic is the basis of computers, and computers are intrinsically at the heart of digital systems We begin with the basics: logic ... in various systems PREFACE xv Chapter 5, “Serial Communications,” presents one of the most basic aspects of systems design: moving data from one system to another Without data links, computers ... off-theshelf chips that can be incorporated into a working system A multilevel perspective is critical to successful systems design, because a system architect must simultaneously consider high-level...
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A computer system consists of hardware, system programs, and application programs figs 1
Ngày tải lên :
28/04/2014, 16:35
... Physical devices Fig 1-1 A computer system consists of hardware, system programs, and application programs Card reader Tape drive Input tape Output tape Printer 1401 (a) System tape (b) 7094 (c) ... Banking system Airline reservation Web browser Compilers Editors Command interpreter Application programs System programs Operating system Machine language Microarchitecture ... Fig 1-3 Structure of a typical FMS job Job Job Job Memory partitions Operating system Fig 1-4 A multiprogramming system with three jobs in memory Monitor Keyboard CPU Memory Video controller...
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A computer system consists of hardware, system programs, and application programs figs 2
Ngày tải lên :
28/04/2014, 16:35
... Finite-state machine Characteristics Parallelism, blocking system calls No parallelism, blocking system calls Parallelism, nonblocking system calls, interrupts Fig 2-12 Three ways to construct ... process All systems Fairness - giving each process a fair share of the CPU Policy enforcement - seeing that stated policy is carried out Balance - keeping all parts of the system busy Batch systems ... keep the CPU busy all the time Interactive systems Response time - respond to requests quickly Proportionality - meet users’ expectations Real-time systems Meeting deadlines - avoid losing data...
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A computer system consists of hardware, system programs, and application programs figs 4
Ngày tải lên :
28/04/2014, 16:35
... Time C B C C B B C C B A A A A D D D Operating system Operating system Operating system Operating system Operating system Operating system Operating system (a) (b) (c) (d) (e) (f) (g) Fig 4-5 Memory ... Operating system in ROM User program User program User program Operating system in RAM Operating system in RAM (a) (b) (c) Fig 4-1 Three simple ways of organizing memory with an operating system ... queue Partition Partition 400K Partition Partition 200K Partition Partition Operating system (a) 100K Operating system (b) Fig 4-2 (a) Fixed memory partitions with separate input queues for each...
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A computer system consists of hardware, system programs, and application programs figs 5
Ngày tải lên :
28/04/2014, 16:35
... using DMA (a) Code executed when the print system call is made (b) Interrupt service procedure User-level I/O software Device-independent operating system software Device drivers Interrupt handlers ... Interrupt handlers Hardware Fig 5-10 Layers of the I/O software system User process User program User space Rest of the operating system Kernel space Printer driver Hardware Printer controller ... 5-12 Functions of the device-independent I/O software Operating system Disk driver Printer driver Keyboard driver (a) Operating system Disk driver Printer driver Keyboard driver (b) Fig 5-13 (a)...
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A computer system consists of hardware, system programs, and application programs figs 6
Ngày tải lên :
28/04/2014, 16:35
... single-level directory system containing four files, owned by three different people, A, B, and C Root directory A A B A B C C C User directory C Files Fig 6-8 A two-level directory system The letters ... owner for read/write; for read only for normal; for not display in listings for normal files; for system file for has been backed up; for needs to be backed up for ASCII file; for binary file for ... file (b) An archive (b) Attribute Protection Password Creator Owner Read-only flag Hidden flag System flag Archive flag ASCII/binary flag Random access flag Temporary flag Lock flags Record length...
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A computer system consists of hardware, system programs, and application programs figs 8
Ngày tải lên :
28/04/2014, 16:35
... Run-time system Run-time system Run-time system Run-time system Run-time system Run-time system Operating system Operating system Operating system Operating system Operating system Operating system ... mailbox Class object Computer Computer R W Int Each computer has a copy of the integer (the object's state) R W Int Interface Distributed shared object Int R W Computer Int R W Computer Fig 8-40 ... circles are files (b) A system in which all clients have the same view of the file system (c) A system in which different clients may have different views of the file system Client A a b a b...
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A computer system consists of hardware, system programs, and application programs figs 9
Ngày tải lên :
28/04/2014, 16:35
... Identification and authentication Audit Trusted path Assurance System architecture System integrity Security testing Design specification and verification Covert channel analysis Trusted facility management ... capability User process User space All system calls go through the reference monitor for security checking Reference monitor Trusted computing base Operating system kernel Fig 9-29 A reference monitor ... the end (d) With a virus spread over free space within the program Operating system Operating system Operating system Virus Virus Virus Sys call traps Disk vector Clock vector Printer vector...
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A computer system consists of hardware, system programs, and application programs figs 10
Ngày tải lên :
28/04/2014, 16:35
... interface to /dev/tty File system Line disciplines Kernel Buffer cache Disk drivers Disk Fig 10-22 The UNIX I/O system in BSD Terminal drivers Raw interface to/dev/tty Computer Process User mode ... Examples of remote mounted file systems Directories are shown as squares and files are shown as circles Client kernel Server kernel System call layer V- node Virtual file system layer Local FS Local ... UNIX utility programs required by POSIX System calls Interrupts and traps Sockets File naming Map- Page ping faults Cooked tty Network protocols File systems Virtual memory Line disciplines Routing...
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A computer system consists of hardware, system programs, and application programs figs 11
Ngày tải lên :
28/04/2014, 16:35
... the registry Service process Win32 program OS/2 program POSIX subsystem Win32 subsystem OS/2 subsystem User mode POSIX program System interface (NT DLL.DLL) I/O mgr File sys D Object Process Memory ... NLS National language support objects FileSystem File system driver objects and file system recognizer objects Security Objects belonging to the security system KnownDLLs Key shared libraries that ... operating system (kernel + executive) Many system calls including most of the graphics Dispatcher from user mode to kernel mode Win32 environment subsystem process Most of the core (nongraphics) system...
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