the design and implementation of public works programs a toolkit for practitioners
The Design and Implementation of a Log-Structured File System
... view the log as the most up to date ‘‘truth’’ about the state of the data on disk. The main difference is thatdatabase systems do not use the log as the final repository for data: a separate data ... again. The bandwidth of each of the five phases isshown separately. Sprite LFS has a higher write bandwidth and the same read bandwidth as SunOS with the exception of sequen-tial reading of a file ... area is reserved for this purpose. The separate data area of these database systems meansthat they do not need the segment cleaning mechanisms of the Sprite LFS to reclaim log space. The space...
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The Design and Implementation of a Sequence Database System * docx
... Catalog Management: Each E-ADT can provide catalogs that maintain statistics and store schema information. Further, certain values may be named. Query Language: An E-ADT can provide a query ... relational data as well as sequence data, using a novel design paradigm of enhanced abstract data types (B- ADTs ). The system implementation based on this paradigm allows sequence and relational ... object-relational database system Illustra [I11941 provides database support for time-series data along with relational data. A time-series is an ADT(Abstract Data Type) value implemented a& amp; a large...
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the design and implementation of geographic information systems
... master data table of addresses.◆Database integrity is maximized. When people start using information and modifying data in databases, what was once clean and accurate data has a way of getting ... more than one), and the system will require software to access, manage, and manipulate the data so that the application can generate a useful product. The data support the application, and if there ... application can work without software so long as the data are arranged in a useful way. That is why data are more important thansoftware .The triad in the center of Figure 1.1 of applications/data/software...
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Real-Time Digital Signal Processing - Chapter 5: Design and Implementation of FIR Filters
... fasttransition from the passband to the stopband, the window should have a small mainlobewidth. On the other hand, to reduce the passband and stopband ripples, the area under208 DESIGN AND IMPLEMENTATION ... the passband, the magnitude response has a peak deviation dp and in the stopband, it has a maximumdeviation ds. The frequencies !p and !sare the passband edge (cut-off) frequency and the ... exchange for a faster roll-off of gain in the transition band. The stopband is chosen by the design specifications.Generally, the smaller dp and dsare, and the narrower the transition band, the...
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Design and Implementation of a Three-Phase Induction Motor Control Scheme
... MATLAB design The MATLAB design constructed is used to simulate the final FO control design where all parameters, processes and variables are modelled mathematically. Furthermore, the MATLAB ... 6.3.2. Analysis of the Field-Orientated Section of the Design In the later stages of Chapter 4, it was mentioned that to increase the speed of the rotor, we have to increase the voltage and frequency ... how a hybrid car works. Within this article, the definition of the hybrid car and its potential advantages are stated. The concept of the parallel hybrid car is presented. This is a car design...
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Real-Time Digital Signal Processing - Chapter 6: Design and Implementation of IIR Filters
... kHz. The passband ripple is less than 3 dB and the stopbandattenuation is at least 30 dB by 50 Hz out on both sides of the passband. The MATLAB script (exam6_13.m in the software package) for designing ... 0:5zÀ1: The pole locations of the direct-form HHz are z 0:18 and z 0:695, and the pole locations of the cascade form HHHz are z 0:375 and z 0:5. Therefore the poles of cascade realization ... determined. The numerator and denominator polynomials of the analog prototype are then mapped to the polynomials for the digital filter using the bilinear transform. For example, the following MATLAB...
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Tài liệu Experiences in Design and Implementation of a High Performance Transport Protocol doc
... copy avoidanceãOverlapped IOãData scattering/gatheringãSpeculation of next packetProtocol Buffer Protocol BufferUser BufferDataNew Data Experiences in Design and Implementation of a ... the flows have the same end-to-end link capacity–Otherwise, any flow will obtain at least half of its fair shareãDoes not take more bandwidth than concurrent TCP flow as long as 6/10822⋅≤⋅SYNLRTT ... optimizationãTheoretical work UDT: Efficiency and Fairness CharacteristicsãTakes 7.5 seconds to reach 90% of the link capacity, independent of BDPãSatisfies max-min fairness if all the...
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Tài liệu The Design and Performance of a Real-time CORBA Event Service doc
... If the avail-ability of new hardware, such as Forward Looking InfraredRadar, requires a new Sensor Proxy, I/O Facades must be al-tered to take advantage of the new technology.3.6 Alleviating ... (Philadelphia, PA),ACM, May 1996.[33] M. H. Klein, T. Ralya, B. Pollak, R. Obenza, and M. G. Har-bour, A Practitioner’sHandbook for Real-Time Analysis: Guideto Rate Monotonic Analysis for Real-Time ... registration, location, and acti-vation; request demultiplexing; framing and error-handling;parameter marshalling and demarshalling; and operation dis-patching.Figure 1 illustrates the primary components...
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Tài liệu Báo cáo khoa học: "DESIGN AND IMPLEMENTATION OF A LLXICAL DATA BASE " docx
... from a theoretical, computational and also practical viewpoint. INTRODUCTION It has been traditionally assumed by computational linguists and particularly by designers of large natural language ... just a particular set of grammatical features such as category, gender, number, person, case, etc. A lexeme contains all the information shared by all the flectional forms of a given lexical ... whereas the actual words are the those potential words that are realized in this language. To give an example, both arrival and arrivation are potential English words, but only the second happens...
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API - 2510A - Fire-Protection Considerations for the Design and Operation of Liquefied Petroleum Gas (LPG) Storage Facilities
... numbers for ịre department, rescue/ambulance, and other critical service organizations.c. Name and address of facility managers and backupcontacts.d. The facility emergency Incident Commander and ... supple-ments API Standard 2510 and provides the basis for many of the requirements stated in that standard, must be used in con-junction with API Standard 2510. In case of conòict, APIStandard 2510 shall ... storage installations, release of liquid LPG to the atmosphere is an unacceptable situation. The resultant formation of large vapor clouds can cause òam-mable vapors to spread over wide areas and...
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DESIGN AND DEVELOPMENT OF MEDICAL ELECTRONIC INSTRUMENTATION A Practical Perspective of the Design, Construction, and Test of Medical Devices docx
... input parameters and provide you automatically with a schematic dia-gram and calculate capacitor and resistor values for specific filter implementations. Thisdoesn’t mean that the programs will ... nearly flat in the passband and rolls off smoothly and monotonically. In addition, it has virtually no ripple in either the passband or the stopband. For these reasons, many designers regard the Butterworthfilter ... the application coveredby the standard. For example, the standards issued by the Association for the Advancement of Medical Instrumentation (AAMI) specify that electrocardiography (ECG) amplifiers...
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iec 61131-8 programmable controllers - guidelines for the application and implementation of programming languages
... to data as function blocks have and can contain declarations of globalvariables and access paths; see 2.5.3 of IEC 61131-3. These have to be declared within the program and thereafter can be ... –Similarly, an assignment statement of the formZ := Y.FILTER_PARAMETER;is valid and could cause an assignment of the value of the FILTER_PARAMETER element of the structured variable Y to the variable ... 61131-3). The interfacesamong the programs, and between the programs and the external interfaces of the system,are defined, and the functionality allocated to each program is defined. Such a decomposition...
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