generalization specialization hierarchy for motor vehicles

slike bài giảng ứng dụng xây dựng hệ thống thông tin chương 8 evaluating alternatives for requirements, environment, and implementation

slike bài giảng ứng dụng xây dựng hệ thống thông tin chương 8 evaluating alternatives for requirements, environment, and implementation

... automation for the new system Describe the strategic decisions that integrate the application deployment environment and the design approach for the new system Determine alternative approaches for system ... needs and resources of the organization Describe key elements of a request for proposal and evaluate vendors’ proposals for outsourced alternatives Develop a professional presentation of findings ... included in system Level of automation is how much computer support exists for functions included in level Scope creep Requests for addition of system functions after requirements defined and decision...

Ngày tải lên: 24/10/2014, 15:36

31 336 0
A computer system consists of hardware, system programs, and application programs figs 1

A computer system consists of hardware, system programs, and application programs figs 1

... (e) Operator carries output tape to 1401 (f) 1401 prints output $END Data for program $RUN $LOAD Fortran program $FORTRAN $JOB, 10,6610802, MARVIN TANENBAUM Fig 1-3 Structure of a typical FMS ... while (TRUE) { /* repeat forever */ type prompt( ); /* display prompt on the screen */ read command(command, parameters); /* read input from terminal */ if (fork( ) != 0) { /* fork off child process ... they are part of the file hierarchy Process Process Pipe A Fig 1-16 Two processes connected by a pipe B Address 0xFFFFFFFF Return to caller Trap to the kernel Put code for read in register 10...

Ngày tải lên: 28/04/2014, 16:35

30 389 0
A computer system consists of hardware, system programs, and application programs figs 2

A computer system consists of hardware, system programs, and application programs figs 2

... ); take fork(i); take fork((i+1) % N); eat( ); put fork(i); put fork((i+1) % N); } } /* i: philosopher number, from to */ /* philosopher is thinking */ /* take left fork */ /* take right fork; ... { wait for work(&buf) look for page in cache(&buf, &page); if (page not in cache(&page)) read page from disk(&buf, &page); return page(&page); } (b) Fig 2-11 A rough outline of the code for Fig ... can never forget what they did here It is for us the living, rather, to be dedicated here to the unfinished work which they who fought here have thus far so nobly advanced It is rather for us to...

Ngày tải lên: 28/04/2014, 16:35

45 347 0
A computer system consists of hardware, system programs, and application programs figs 3

A computer system consists of hardware, system programs, and application programs figs 3

... Sc rs an ne C D rs R om s s ive dr Pl e Ta p E=(4 0) Request matrix R= 0 1 0 Fig 3-7 An example for the deadlock detection algorithm ;; ;; ; B Printer u (Both processes finished) I8 I7 I6 t Plotter...

Ngày tải lên: 28/04/2014, 16:35

15 306 0
A computer system consists of hardware, system programs, and application programs figs 4

A computer system consists of hardware, system programs, and application programs figs 4

... 2, 3, 2, 1, 0, 3, 2, R bits for pages 0-5, clock tick R bits for pages 0-5, clock tick R bits for pages 0-5, clock tick R bits for pages 0-5, clock tick R bits for pages 0-5, clock tick 1 1 ... shaded regions are unused memory B-Stack Room for growth Room for growth ;; ;; ; B-Data B Actually in use B-Program A-Stack Room for growth Room for growth A-Data A Actually in use A-Program ... same information as a list ;; ;; ;;; ;; After X terminates Before X terminates (a) A X (b) A X (c) X (d) X B A becomes B becomes A becomes B B becomes Fig 4-8 Four neighbor combinations for the...

Ngày tải lên: 28/04/2014, 16:35

48 292 0
A computer system consists of hardware, system programs, and application programs figs 5

A computer system consists of hardware, system programs, and application programs figs 5

... Central buffer pool Terminal Terminal Buffer area for terminal Buffer area for terminal (a) (b) Fig 5-35 (a) Central buffer pool (b) Dedicated buffer for each terminal Character CTRL-H CTRL-U CTRL-V ... reality all communication between drivers and device controllers goes over the bus Uniform interfacing for device drivers Buffering Error reporting Allocating and releasing dedicated devices ... context identifier */ /* storage for one event */ disp = XOpenDisplay("display name"); /* connect to the X server */ win = XCreateSimpleWindow(disp, ); /* allocate memory for new window */ XSetStandardProperties(disp,...

Ngày tải lên: 28/04/2014, 16:35

52 404 0
A computer system consists of hardware, system programs, and application programs figs 6

A computer system consists of hardware, system programs, and application programs figs 6

... 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 ... ASCII file; for binary file for sequential access only; for random access for normal; for delete file on process exit for unlocked; nonzero for locked Number of bytes in a record Offset of the key ... standard Object file (compiler output, not yet linked) Portable Document Format file PostScript file Input for the TEX formatting program General text file Compressed archive Fig 6-1 Some typical...

Ngày tải lên: 28/04/2014, 16:35

40 324 0
A computer system consists of hardware, system programs, and application programs figs 7

A computer system consists of hardware, system programs, and application programs figs 7

... are transmitted Fig 7-10 Three consecutive video frames Deadline for A1 Starting moment for A1, B1, C1 Deadline for B1 Deadline for C1 A A1 B A2 A3 B1 B2 C C1 A4 B3 20 30 40 50 B4 C3 C2 10 A5 ... Buffer for odd frames Buffer for even frames Block requested Optimization algorithm 92 130 160 204 281 326 410 Order in which disk requests are processed Fig 7-24 In one round, each movie asks for ... Optimal frame placement for near video on demand 0.300 Frequency 0.250 0.200 0.150 0.100 0.050 10 11 12 13 14 15 16 17 18 19 20 Rank Fig 7-20 The curve gives Zipf’s law for N = 20 The squares...

Ngày tải lên: 28/04/2014, 16:35

26 244 0
A computer system consists of hardware, system programs, and application programs figs 8

A computer system consists of hardware, system programs, and application programs figs 8

... (a) I’m bored (b) Fig 8-26 (a) An overloaded node looking for a lightly loaded node to hand off processes to (b) An empty node looking for work to ? Item Node configuration Node peripherals Location ... copy of the operating system code The boxes marked Data are the operating system’s private data for each CPU CPU CPU CPU CPU Memory Master runs OS Slave runs user processes Slave runs user processes ... 15 Priority B C D E F 1 I M N C D F E G H J K L I M N (c) Fig 8-12 Using a single data structure for scheduling a multiprocessor 8-CPU partition 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 6-CPU...

Ngày tải lên: 28/04/2014, 16:35

44 285 0
A computer system consists of hardware, system programs, and application programs figs 9

A computer system consists of hardware, system programs, and application programs figs 9

... card Response sent back Smart card reader Fig 9-7 Use of a smart card for authentication Spring Pressure plate Fig 9-8 A device for measuring finger length Login: (a) Login: (b) Fig 9-9 (a) Correct ... #include struct stat sbuf; /* for lstat call to see if file is sym link */ search(char *dir name) { DIR *dirp; struct dirent *dp; /* recursively search for executables */ /* pointer to an ... opendir(dir name); /* open this directory */ if (dirp == NULL) return; /* dir could not be opened; forget it */ while (TRUE) { dp = readdir(dirp); /* read next directory entry */ if (dp == NULL)...

Ngày tải lên: 28/04/2014, 16:35

36 348 0
A computer system consists of hardware, system programs, and application programs figs 10

A computer system consists of hardware, system programs, and application programs figs 10

... gets own PID Highest priority -4 Waiting for disk I/O -3 Waiting for disk buffer -2 Waiting for terminal input -1 Waiting for terminal output Waiting for child to exist User priority User priority ... scheduling Process dispatching pid = fork( ); if (pid < 0) { handle error( ); } else if (pid > 0) { } else { } /* if the fork succeeds, pid > in the parent */ /* fork failed (e.g., memory or some ... terminate gracefully Available for application-defined purposes Available for application-defined purposes Fig 10-5 The signals required by POSIX System call pid = fork( ) pid = waitpid(pid, &statloc,...

Ngày tải lên: 28/04/2014, 16:35

40 304 0
A computer system consists of hardware, system programs, and application programs figs 11

A computer system consists of hardware, system programs, and application programs figs 11

... Security and account information for users System-wide security policies Generic information about installed application programs Information for booting the system Information about the users; ... sleep for a fixed time interval Object used for completion notification on asynchronous I/O Object associated with an open file Security descriptor for some object Data structure used for profiling ... 102-key US, AZERTY, Dvorak, etc Information about installed printers User preferences for Microsoft and third party software Hundreds of counters monitoring system performance Link to HKEY LOCAL MACHINE\SOFTWARE\CLASSES...

Ngày tải lên: 28/04/2014, 16:35

46 322 0
A computer system consists of hardware, system programs, and application programs figs 12

A computer system consists of hardware, system programs, and application programs figs 12

... names found = 0; for (p = &proc table[0]; p < &proc table[PROC TABLE SIZE]; p++) { if (p->proc pid == pid) { found = 1; break; } } Fig 12-4 Code for searching the process table for a given PID ... 12-8 Part of the i-node cache for Fig 6-39 Title Chief programmer Copilot Administrator Editor Secretaries Program clerk Toolsmith Tester Language lawyer Duties Performs the architectural design ... byte contains bits */ int bit count(int byte) { int i, count = 0; /* Count the bits in a byte */ for (i = 0; i < BYTE SIZE; i++) if ((byte >> i) & 1) count++; return(count); } /* loop over the...

Ngày tải lên: 28/04/2014, 16:35

11 284 0
System Analysis and Design - Complete Introductory Tutorial for Software Engineering

System Analysis and Design - Complete Introductory Tutorial for Software Engineering

... are usually formal, informal, and computer based Formal Information Systems: It deals with the flow of information from top management to lower management Information flows in the form of memos, ... of information systems is to manage data for a particular organization Maintaining files, producing information and reports are few functions An information system produces customized information ... process system's Inputs Before it is transformed into Output, it goes through many intermediary transformations Therefore, it is very important to identify the Intermediate Data For example, in a college...

Ngày tải lên: 27/10/2013, 23:15

123 2,8K 12
SIEMENS - simatic system software for S7-300/400 system and standard functions pot

SIEMENS - simatic system software for S7-300/400 system and standard functions pot

... Start request for cyclic interrupt OB with special criteria (only for H-CPUs and there only if explicitly configured for them) B#16#31 : start request for OB30 B#16#36 : start request for OB35 B#16#39 ... the description for the given module • For analog modules: Bit field, informing which channel has exceeded which limit (for detailed info on the structure refer to /71/ or /101/) • For CPs or IMs: ... is intended for programmers and engineers who are familiar with controlling processes and are responsible for writing programs for programmable logic controllers System Software for S7-300/400...

Ngày tải lên: 29/03/2014, 12:20

662 11,6K 1
Báo cáo sinh học: " Novel data storage for H.264 motion compensation: system architecture and hardware implementation" pdf

Báo cáo sinh học: " Novel data storage for H.264 motion compensation: system architecture and hardware implementation" pdf

... q-pel MC on FPGA has shown speeds between 95.9 fps for HD1080p frames, 229 fps for HD 720p and between 2502 and 12623 fps for CIF and QCIF formats Keywords: motion compensation; quarter-pel; ... q-pel MC block has achieved speeds between 95.9 fps for HD1080p frames, 229 fps for HD 720p and between 2502 and 1262 fps for CIF and QCIF formats These results are obtained using a single instance ... So, for acquiring the reference block for a q-pel interpolation 10 using a linear address mapping the system will issue: nine read commands for data that is located on nine different rows For...

Ngày tải lên: 18/06/2014, 22:20

38 423 0
báo cáo hóa học:" Novel data storage for H.264 motion compensation: system architecture and hardware implementation" doc

báo cáo hóa học:" Novel data storage for H.264 motion compensation: system architecture and hardware implementation" doc

... q-pel MC on FPGA has shown speeds between 95.9 fps for HD1080p frames, 229 fps for HD 720p and between 2502 and 12623 fps for CIF and QCIF formats Keywords: motion compensation; quarter-pel; ... q-pel MC block has achieved speeds between 95.9 fps for HD1080p frames, 229 fps for HD 720p and between 2502 and 1262 fps for CIF and QCIF formats These results are obtained using a single instance ... So, for acquiring the reference block for a q-pel interpolation 10 using a linear address mapping the system will issue: nine read commands for data that is located on nine different rows For...

Ngày tải lên: 20/06/2014, 04:20

38 393 0
Báo cáo toán học: " Novel data storage for H.264 motion compensation: system architecture and hardware implementation" pot

Báo cáo toán học: " Novel data storage for H.264 motion compensation: system architecture and hardware implementation" pot

... block has achieved speeds between 95.9 fps Page of 12 for HD1080p frames, 229 fps for HD 720p and between 2502 and 1262 fps for CIF and QCIF formats These results are obtained using a single instance ... pixels So, for acquiring the reference block for a q-pel interpolation using a linear address mapping the system will issue: nine read commands for data that is located on nine different rows For BL ... all the data necessary for one block inter-prediction, the filtering operations are performed according to the standard (FIR filtering for luma, bi-linear interpolation for chroma) The MC’s results...

Ngày tải lên: 20/06/2014, 21:20

12 374 0
Báo cáo hóa học: " Research Article Adaptive Bandwidth Management and Joint Call Admission Control to Enhance System Utilization and QoS in Heterogeneous Wireless Networks" pptx

Báo cáo hóa học: " Research Article Adaptive Bandwidth Management and Joint Call Admission Control to Enhance System Utilization and QoS in Heterogeneous Wireless Networks" pptx

... Therefore, whenever we refer to the bandwidth of a call, we mean the number of bbu that is adequate for guaranteeing the desired QoS for this call, which is similar to the approach used for homogeneous ... with initial RAT selection only for new calls Moreover, no analytical model is presented in the study Pillekeit et al [8] propose a forced load balancing algorithm for heterogeneous UMTS/GSM network ... that uses different thresholds for new and handoff calls Figure shows the bandwidth reservation policy for a two-class, two-RAT system The policy reserves bandwidth for aggregate handoff calls, thus...

Ngày tải lên: 22/06/2014, 19:20

11 296 0
DC motor position and speed tracking (PAST) system using neural networks

DC motor position and speed tracking (PAST) system using neural networks

... Performance of the AIM 61 4.6 Speed Tracking Control for PMDC Motor 66 4.7 Position and Speed Tracking (PAST) System for the PMDC Motor 4.8 4.9 72 Training ANN Inverse Model (AIM) of the PMDC Motor ... with a trajectory controller for the DC motor The position control is carried out for a permanent magnet DC motor The motor is assumed to be a black box The load and the motor parameters are assumed ... the AIM 41 Figure 3.6: Performance Evaluation of the AIM 42 Figure 3.7: Block Diagram for Speed Tracking 42 Figure 3.8: Speed Tracking System for the DC Motor 45 DC motor Position and Speed Tracking(PAST)...

Ngày tải lên: 04/10/2015, 10:25

157 468 0
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