transactions for one specific customer resulting in many events
slike bài giảng ứng dụng xây dựng hệ thống thông tin chương 8 evaluating alternatives for requirements, environment, and implementation
Ngày tải lên :
24/10/2014, 15:36
... Project Information VII Details for Submitting Proposal IV Evaluation Criteria and Process 25 Sample RFP Table of Contents (continued) 26 Benchmarking and Choosing a Vendor Observe in use or install ... Deciding on Scope and Level of Automation Scope determines which business functions will be included in system Level of automation is how much computer support exists for functions included in ... what alternatives are possible for developing solution Implementation alternatives include: Building system in- house Buying packaged or turnkey solution Contracting with developer to build it...
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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
... steps in starting an I/O device and getting an interrupt (b) Interrupt processing involves taking the interrupt, running the interrupt handler, and returning to the user program Cache bus Level cache ... instruction CPU Next instruction Interrupt controller Disk controller Return Interrupt Dispatch to handler (a) Interrupt handler (b) Fig 1-10 (a) The steps in starting an I/O device and getting ... Description Open a file for reading, writing or both Close an open file Read data from a file into a buffer Write data from a buffer into a file Move the file pointer Get a file’s status information Directory...
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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
... nonsolution to the dining philosophers problem #define N #define LEFT (i+N−1)%N #define RIGHT (i+1)%N #define THINKING #define HUNGRY #define EATING typedef int semaphore; int state[N]; semaphore ... of customers waiting for service */ /* # of barbers waiting for customers */ /* for mutual exclusion */ /* customers are waiting (not being cut) */ void barber(void) { while (TRUE) { down(&customers); ... Process (b) Process In both cases, be sure to note the semicolons terminating the while statements #define FALSE #define TRUE #define N /* number of processes */ int turn; int interested[N]; /*...
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A computer system consists of hardware, system programs, and application programs figs 3
Ngày tải lên :
28/04/2014, 16:35
... 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 I5 r s A p I1 q I2 I3 I4 Printer Plotter Fig 3-8 Two process ... ); up(&resource 2); up(&resource 1); } (b) (a) Fig 3-1 Using a semaphore to protect resources (a) One resource (b) Two resources typedef int semaphore; semaphore resource 1; semaphore resource ... potential deadlock A D S T U R B C (a) (b) (c) Fig 3-3 Resource allocation graphs (a) Holding a resource (b) Requesting a resource (c) Deadlock A Request R Request S Release R Release S (a) A requests...
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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
... A-Data A Actually in use A-Program Operating system Operating system (a) (b) Fig 4-6 (a) Allocating space for a growing data segment (b) Allocating space for a growing stack and a growing data segment ... utilization for to jobs with 80 percent I/O wait (c) Sequence of events as jobs arrive and finish The numbers above the horizontal lines show how much CPU time, in minutes, each job gets in each interval ... Device drivers in ROM 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...
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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
... bus Uniform interfacing for device drivers Buffering Error reporting Allocating and releasing dedicated devices Providing a device-independent block size Fig 5-12 Functions of the device-independent ... of cylinder skew 7 6 (a) (b) (c) Fig 5-26 (a) No interleaving (b) Single interleaving (c) Double interleaving Initial position X Time X Pending requests X X 10 X 15 X 20 25 30 X 35 Cylinder ... Window (0, 767) (1023, 767) Fig 5-40 A sample window located at (200, 100) on an XGA display #include int WINAPI WinMain(HINSTANCE { WNDCLASS wndclass; MSG msg; HWND hwnd; h, HINSTANCE,...
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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
... system file for has been backed up; for needs to be backed up for ASCII file; for binary file for sequential access only; for random access for normal; for delete file on process exit for unlocked; ... process before mapping files into its address space (b) The process after mapping an existing file abc into one segment and creating a new segment for file xyz Root directory A A B C Fig 6-7 A single-level ... and in what way Password needed to access the file ID of the person who created the file Current owner for read/write; for read only for normal; for not display in listings for normal files; for...
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A computer system consists of hardware, system programs, and application programs figs 7
Ngày tải lên :
28/04/2014, 16:35
... Fig 7-9 The order in which the quantized values 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 ... (9000 frames) Minutes 30 60 Play point at 75 90 (a) Play point at 12 (b) Play point at 15 (c) Play point at 16 (d) Play point at 22 (e) Fig 7-16 (a) Initial situation (b) After a rewind to 12 (c) ... 7-22 Four ways of organizing multimedia files over multiple disks (a) No striping (b) Same striping pattern for all files (c) Staggered striping (d) Random striping 10 sec min 0 User 1 0 0 0 User...
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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
... Client Server Operating system Operating system Network Fig 8-21 Steps in making a remote procedure call The stubs are shaded gray Machine Machine Machine Machine Machine Machine Application Application ... 8-17 Store-and-forward packet switching Entire packet (c) Node CPU Node Main RAM User OS Main RAM CPU Switch Main RAM Main RAM CPU CPU Node Optional on- board CPU Interface board RAM Interface board ... Position of the network interface boards in a multicomputer Send ring Node Receive ring CPU Main RAM Main RAM 67 43 CPU OS Node 10 0 0 0 67 43 Switch 00 0 0 CPU OS RAM Bit map Interface board Fig...
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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
... { printf("login: "); printf("login: "); get string(name); get string(name); disable echoing( ); disable echoing( ); printf("password: "); printf("password: "); get string(password); get string(password); ... 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 login screen (b) Phony login screen while (TRUE) ... LOGIN: carol INVALID LOGIN NAME LOGIN: (b) LOGIN: carol PASSWORD: Idunno INVALID LOGIN LOGIN: (c) Fig 9-4 (a) A successful login (b) Login rejected after name is entered (c) Login rejected after name...
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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
... thread 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 ... stack Reset signals Initialize registers Fig 10-9 The steps in executing the command ls typed to the shell Flag CLONE VM CLONE FS CLONE FILES CLONE SIGHAND CLONE PID Meaning when set Create ... handling termination Process scheduling Process dispatching pid = fork( ); if (pid < 0) { handle error( ); } else if (pid > 0) { } else { } /* if the fork succeeds, pid > in the parent */ /* fork...
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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
... and account information for users System-wide security policies Generic information about installed application programs Information for booting the system Information about the users; one subkey ... real meaning; comparisons across columns not, as discussed in the text Win32 application program Win32 Application Programming Interface Win32s Windows 3.x Windows 95/98/Me Windows NT Window 2000 ... 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 Link...
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A computer system consists of hardware, system programs, and application programs figs 12
Ngày tải lên :
28/04/2014, 16:35
... main( ) { int ; main( ) { mess t msg; init( ); something( ); read( ); something else( ); write( ); keep going( ); exit(0); init( ); while (get message(&msg)) ... Threads, thread scheduling, thread synchronization Interrupt handling, context switching, MMU Hide the low-level hardware Fig 12-2 One possible design for a modern layered operating system External ... = 1; break; } } Fig 12-4 Code for searching the process table for a given PID #include "config.h" #include "config.h" init( ) { #if (CPU == PENTIUM) /* Pentium initialization here */ #endif...
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System Analysis and Design - Complete Introductory Tutorial for Software Engineering
Ngày tải lên :
27/10/2013, 23:15
... their information needs It can be for maintaining the records for employee for their wages calculations, keeping track of their leave status, maintaining company's expenses, inquiries from customers ... systems exist in concept only Man made Information System The main purpose of information systems is to manage data for a particular organization Maintaining files, producing information and ... information, managerial information and operational information Strategic information is the information needed by top most management for decision making For example the trends in revenues earned...
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SIEMENS - simatic system software for S7-300/400 system and standard functions pot
Ngày tải lên :
29/03/2014, 12:20
... Program Interface for the PROFInet Component with SFC112 "PN _IN" .21-4 Updating the Outputs of the User Program Interface for the PROFInet Component with SFC113 "PN_OUT" 21-5 Updating DP Interconnections ... /102/ to determine which OBs are included with your CPU Where to Find More Information? Refer to the online help and the following manuals for more information: • /70/: this manual contains the technical ... your regional training center or our central training center in D 90327 Nuremberg, Germany for details: Telephone: +49 (911) 895-3200 http://www.sitrain.com/ vi System Software for S7-300/400 System...
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Báo cáo sinh học: " Novel data storage for H.264 motion compensation: system architecture and hardware implementation" pdf
Ngày tải lên :
18/06/2014, 22:20
... 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 are also buffered into ... addressing system is kept for the × Chroma blocks They are saved in an interlaced way in the memory as used also in [2] The data are vectorized using the proposed method in a similar way Being that ... quarter-pixel interpolation request by only opening one or maximum three consecutive rows, as shown in Table When using the data spreading over different banks for any case of interpolation only one row...
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báo cáo hóa học:" Novel data storage for H.264 motion compensation: system architecture and hardware implementation" doc
Ngày tải lên :
20/06/2014, 04:20
... 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 are also buffered into ... addressing system is kept for the × Chroma blocks They are saved in an interlaced way in the memory as used also in [2] The data are vectorized using the proposed method in a similar way Being that ... quarter-pixel interpolation request by only opening one or maximum three consecutive rows, as shown in Table When using the data spreading over different banks for any case of interpolation only one row...
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Báo cáo toán học: " Novel data storage for H.264 motion compensation: system architecture and hardware implementation" pot
Ngày tải lên :
20/06/2014, 21:20
... 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 ... addressing system is kept for the × Chroma blocks They are saved in an interlaced way in the memory as used also in [2] The data are vectorized using the proposed method in a similar way Being that ... pipelined It performs simultaneously the inter-prediction for luma and chromas The luma pipeline has a higher processing delay than the pipeline serving the chromas Further on, after having retrieved...
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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
Ngày tải lên :
22/06/2014, 19:20
... using, for instance, a layered coding method In layer coding method, the lowest layer (i.e., the base layer) contains the critical information for decoding the image sequence at its minimum visual ... No Yes New call? Sort RAT j for all j in increasing order of current load Lhj , and set n = i Select the nth RAT bi,req ≤ yi j Yes No Sort RAT j for all j in increasing order of current load Lnj ... arrives into a group of colocated cells, the JCAC algorithm selects the least loaded RAT available for the incoming call The action of selecting a RAT for each arriving new or handoff call in the...
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DC motor position and speed tracking (PAST) system using neural networks
Ngày tải lên :
04/10/2015, 10:25
... improvement over the offline training because it is difficult to get all possible combinations of training data for offline training Thus, there is an inherent error in the offline training due to the ... neural networks for identification and control of a DC motor using offline learning In the rule based ANN control in Section 2.2, online training of the neural network was done using two parameters ... the feed forward neural network (Haykin, 1994) If the weights and biases of the ANN are determined through offline training only, then an intensive training has to be performed considering almost...
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