the design and implementation of geographic information systems

... confidence in the output .The process of design and implementation of a GIS begins with people and their needs and ends up withapplications in the hands of people who do the work .The entire system ... well-designedenterprise GIS. The process of design and implementation of an enterprise GIS is complex and can take up to a year or more depending on the size of the organization and the amount of ... budgetary decisions, and rendering the ultimate decisions on the implementation path. The secondgroup would include all of the same people in the first group and more of the endusers of the system.This...

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The Design and Implementation of a Log-Structured File System

... sequen-tially, then writes 100 Mbytes randomly to the existing file, thenreads 100 Mbytes randomly from the file, and finally reads the filesequentially again. The bandwidth of each of the five phases ... shows the relative importance of the variouskinds of data written to disk, both in terms of how much of the live blocks they occupy on disk and in terms of howmuch of the data written to the ... clean. The policy rates each segmentaccording to the benefit of cleaning the segment and the cost of cleaning the segment and chooses the segments with the highest ratio of benefit to cost. The benefit...

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The Design and Implementation of a Sequence Database System * docx

... difference between the 24-h?ur moving average of the high price of Stockl, and the high price of Stock2 at the most recent hour when the volume of Stock2 traded was greater than 25,000. The answer ... use of information that limits the range of positions of interest in the query answer. There are two sources of such information: one is from selection predicates in the query that use the ... orders of magnitude! We should stress that these differences are symptoms of a basic design difference between SEQ and ADT-method systems. In order for these systems to derive some of the efficiencies...

The Design and Implementation of a Java Virtual Machine on a Cluster of Workstations pptx

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RESEARCH, DESIGN AND FABRICATION OF DIGITAL INFORMATION TRANSIMITER WORKING IN THE VHF BAND

... output .The digital output signal of the encoder is the output of the first register in the counter .the digital output signal is transmitted at the clock(sample) rate and will equal”1” if the analoginput ... the amplitude of the slopevoltage out of the syllabic filter .the encoder and decoder have identical characteristics except for the comparator and filter functions. The CVSD decoder consists of ... the overloadalgorithm. The slope-voltage output of the syllabic filter is the modulating input to the PAM. The step-function response of the syllabic filter is related to the syllabic rate of speech,...

Real-Time Digital Signal Processing - Chapter 5: Design and Implementation of FIR Filters

... width and the relative sidelobe level. To ensure a fasttransition from the passband to the stopband, the window should have a small mainlobewidth. On the other hand, to reduce the passband and ... transient behavior of the FIRfilter. For n ! L À 1, the filter aligns over the non-zero portion of the input sequence.That is, the signal buffer of FIR filter is full and the filter is in the steady ... FiltersA multiband filter has more than one passband and stopband. A special case of the multiband filter is the comb filter. A comb filter has evenly spaced zeros, with the shape of the magnitude...

Design and Implementation of a Three-Phase Induction Motor Control Scheme

... the requirements of the degree of Bachelor of Engineering (Honours) in the division of Electrical Engineering, I present the following thesis entitled Design and Implementation of a Three-Phase ... the software section of the design must interrupt the speed of the rotor based on the number of pulses it receives. The rated speed of the induction motor used in this thesis project is 1500rpm, ... multiplied by the radius of the cylindrical stator. Therefore, the resultant torque applied by the rotor is proportional to the relative speed of the magnetic field with respect to the speed of the rotor....

Real-Time Digital Signal Processing - Chapter 6: Design and Implementation of IIR Filters

... filtering of x(n)to get y1(n) */} IMPLEMENTATION CONSIDERATIONS2796 Design and Implementation of IIR FiltersWe have discussed the design and implementation of digital FIR filters in the previouschapter. ... Vmis the center frequency defined in (6.2.15) and BW is the bandwidth defined in(6.2.16).254 DESIGN AND IMPLEMENTATION OF IIR FILTERS6.3 Design of IIR FiltersIn this section, we discuss the design ... 6.9 The concept of impulse-invariant design 256 DESIGN AND IMPLEMENTATION OF IIR FILTERS The impulse-invariant design is usually not performed directly in the form of (6.3.5).In practice, the...

Tài liệu Experiences in Design and Implementation of a High Performance Transport Protocol doc

... one has 1ms RTT, the other varies from 1ms to 1000ms Fairness and Friendliness50 TCP flows and 4 UDT flows between SARA and StarLightRealtime snapshot of the throughput The 4 UDT flows ... overcome the shortcomings of TCP•We explained the design rationale and implementations details in this paper Outline•TCP’s inefficiency in grid applications•UDT• Design issues•Implementations ... IndexUDTTCP•Stability index of UDT and TCP– Stability: average standard deviation of throughout per unit time– 10 UDT flows and 10 TCP flows with different RTTs Implementations Issues•Efficiency and CPU utilization•Loss...

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