acceptance tests and commissioning measurements
Automation of Call Setup in IP Telephony for Tests and Measurements
... phone Figure B-1 also shows where and how (i.e., using what types of links) various kinds of test equipment are connected to support di¤erent types of tests and measurements A detailed description ... rate interface links NTS stands for network time server; it provides timing information (clock) to the IP domain network elements such as IP-PSTN GWs, GK, and NIST-Net, and if needed, it can derive ... IN IP TELEPHONY FOR TESTS of intercall-burst time gap (in milliseconds) needed so that all 24 calls will be processed with the existing hardware and software configuration and capacity of the...
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Báo cáo y học: "Hepatitis C Virus Serologic and Virologic Tests and Clinical Diagnosis of HCVRelated Liver Disease"
... genotypes and (B), and genotypes 4, and (C) Int J Med Sci 2006, HCV genotypes and Patients infected with HCV genotypes or have a 70%-80% likelihood of an SVR with a low dose of ribavirin and only ... to treat patients with mild lesions and to re-assess their liver disease after to years The patients with inflammation and/ or fibrosis (Metavir score A ≥ and/ or F ≥ 2) have an indication for ... 1-46 Hadziyannis SJ, et al Peginterferon-alpha2a and ribavirin combination therapy in chronic hepatitis C: a randomized study of treatment duration and ribavirin dose Ann Intern Med 2004, 140: 346-55...
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iec 60076-3 power transformers - insulation levels, dielectric tests and external clearances in a
... withstand voltage of the neutral terminal and its connected winding(s) to earth and other windings, and along the winding(s) under test This test is required if a standard impulse withstand voltage ... withstand voltage test (ACSD), see 12.2 and 12.3 Thetest is intended to verifythe AC withstandstrength of each lineterminalandits connected winding(s) to earth and other windings, the withstand ... associatedwiththeircorrespondingratedinsulationlevels and detailstherelevantapplicabledielectrictests and minimumexternalclearancesinair between live parts of bushings and to objects at earth potential For categories of power transformers and...
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Tài liệu Báo cáo khoa học: "Evaluation of Machine Translations by Reading Comprehension Tests and Subjective Judgments" doc
... comprehension tests were rated by enough subjects to provide scale values Furthermore, performance on the reading comprehension tests is also a function of passage difficulty and question difficulty, and ... ability to understand them, which is consistent with the subjective opinions of those who have used machine translations Judgment of Clarity Tests In the following series of tests, subjects were ... The other two tests differ from the first study in that each sentence appeared on a separate card, in random order, so that context effects were largely absent In one of these tests, the same...
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Aging of the Respiratory System: Impact on Pulmonary Function Tests and Adaptation to Exertion pdf
... colleagues, and DuWayne Schmidt and colleagues[52,74,75] DuWayne Schmidt and colleagues included patients ages 20 to 94 and found that decline in FEV1 and FVC with age was linear (À31 mL/year in men and ... and 27 mL/year for men and, for FVC, 33 mL/year in women and 20 mL/year in men (Box 1) [13,74,108,113,117] Regression equations suggest a linear relationship between age and decline in FEV1 and ... FEV1/FVC are less than 70% for men ages 80 and older and women ages 92 and older (see Box 1) [74] Flow-volume curves and peak expiratory flow Fowler and colleagues report characteristic modifications...
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THINKING ABOUT TESTS AND TESTING pdf
... Aptitude Test) and, since 1982, the National Assessment of Educational Progress (NAEP) It also develops and administers law and medical school admissions tests and tests for use in business and industry ... norm-referenced achievement tests: the Iowa Tests of Basic Skills, the Iowa Tests of Educational Development; Tests of Achievement and Proficiency; the 9th version of the Stanford Achievement Tests; the Metropolitan ... “norm-referenced test.” The Iowa Tests of Basic Skills and other commercial tests of achievement, the SAT, and IQ tests, are all examples of norm-referenced tests The idea of establishing national...
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Teacher Quality, Teacher Licensure Tests, and Student Achievement pptx
... these assumptions, non-random allocation of students and teachers into schools and classrooms would induce correlations among teacher quality, school quality, and family and students characteristics ... heterogeneity and non-random assignment of students to teachers) Thus, random effect methods are inconsistent and fixed effect methods are needed In this case, the coefficients of students and teachers’ ... of white, non-Hispanic and Asian/Pacific Islander teaching candidates in California pass each test on the first attempt, but far fewer Black and Hispanic so (Jacobson and Suckow, 2006) The pass...
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Practice Tests and Hints for IELTS ppt
... given a mark between and for each of the Sub -tests (there are no half marks in the Writing and Speaking Sub -tests) Your Overall Band Score is an average of the Subtest Band Scores, with fractional ... Generally handles complex language well and understands detailed reasoning Competent User - Has generally effective command of the language despite some inaccuracies, inappropriacies and misunderstandings ... each other Pay particular attention to: E and F I, J and L M, N and W U and V I and T (It is often hard to tell the difference between these letters when candidates write them quickly.) Numbers:...
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Power Quality Harmonics Analysis and Real Measurements Data Part 15 doc
... Harmonics Analysis and Real Measurements Data Crectifier and Cac_cable are the capacitive couplings of the rectifier side and underground cable, respectively, with ground Rac_cable and Lac_cable make ... compatibility (EMC) Part 4-7: Testing and measurement techniques General guide on harmonics and interharmonics measurements and instrumentation for power supply and equipment connected thereto, International ... phase voltage waveform and (b) FFT analysis of the waveform obtained, at node 276 Power Quality Harmonics Analysis and Real Measurements Data Although voltage waveform meets standard regulations,...
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Power Quality Harmonics Analysis and Real Measurements Data Part 1 pdf
... Spain XI Part Measurements Electric Power Systems Harmonics Identification and Measurements Soliman Abdelhady Soliman1 and Ahmad Mohammad Alkandari2 1Misr University for Science and Technology, ... Contents Preface IX Part Chapter Measurements Electric Power Systems Harmonics - Identification and Measurements Soliman Abdelhady Soliman and Ahmad Mohammad Alkandari Chapter On the Reliability ... Quality Harmonics Analysis and Real Measurements Data Sources and problems of harmonics [2] Harmonic sources are divided into two categories: Established and known New and Future A review of the...
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Power Quality Harmonics Analysis and Real Measurements Data Part 2 docx
... and varied These parameters are the standard 14 Power Quality Harmonics Analysis and Real Measurements Data deviation of the noise, the number of samples, and the sampling frequency A Gaussiandistributed ... DFT, and LAV methods (sampling frequency = 1620 Hz) Electric Power Systems Harmonics - Identification and Measurements 19 The CPU time for the DFT and LES algorithms are essentially the same, and ... sampling interval and the oldest sample is discarded The new [A]+ for the latest m samples is calculated and the estimates of [] are 12 Power Quality Harmonics Analysis and Real Measurements Data...
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Power Quality Harmonics Analysis and Real Measurements Data Part 3 ppt
... Analysis and Real Measurements Data Fig 27 Gain of the proposed filter for X1 and Y1 using models and Fig 28 Estimated magnitudes of 60 Hz and third harmonic for frequency drifts using models and ... recorded data set and computes the voltage and current harmonics magnitude, the voltage and current harmonics phase angles, and the fundamental power and harmonics power Initialization of the ... H T H H T z and the corresponding covariance error matrix is: 1 ˆ P0 H T H where H is an m m matrix of measurements, and z is an m vector of previous measurements, the initial...
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Power Quality Harmonics Analysis and Real Measurements Data Part 4 docx
... variables, and {A0, A1, …, An} is a set of symmetric fuzzy numbers The membership function of Ai is symmetrical triangular defined by center and spread values, pi and ci, respectively and can be ... covariance matrices, Q1 and Q2, are constant matrices Q1 and Q2 values are based on some knowledge of the actual characteristics of the process and measurement noises, respectively Q1 and Q2 are chosen ... (102) Electric Power Systems Harmonics - Identification and Measurements 63 Then, for estimating the first two harmonics and using Eq.(71) v1(k) and v2(k) are obtained as follows: v ( k ) 1.414...
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Power Quality Harmonics Analysis and Real Measurements Data Part 5 doc
... 228 Hz and 348 Hz of this case study are one pair, and interharmonics 264 Hz and 384 Hz are another pair From (12), it can be estimated that the drives’ frequencies are 48 Hz and 54 Hz, and that ... obtained from the voltage and current measurements at a metering point as * PIH Re VIH I IH VIH I IH cos IH , (14) where |VIH| and |IIH| are the interharmonic voltage and current magnitudes, ... Customer 1, Customer and Customer These customers operate large oil extracting drives The measurements were done through potential transformers and current transformers (PTs and CTs) The data were...
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Power Quality Harmonics Analysis and Real Measurements Data Part 6 pptx
... is predominant Band Band Band Zmag Zleak fr1 fr3 fr2 log f Fig 12 Simplified representation of VT magnetizing and leakage impedance-frequency characteristics The developed wideband circuit model ... Harmonics Analysis and Real Measurements Data Wideband analysis of VT transfer characteristic requires taking into account also external impedances of measured voltage source and VT load Therefore, ... capacitances usually limit noticeably VT pass band in high frequency range Fig Influence of source and load impedance on the VT pass band Broadband modelling of voltage transformers Modelling...
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Power Quality Harmonics Analysis and Real Measurements Data Part 7 pdf
... stages 1,2 and or 5,6 and The transistors conduct for the time of stages and 5, the freewheeling diodes – for the time of stages 3, 4, and 8, and the rectifier diodes – for the time of stages and The ... Quality Harmonics Analysis and Real Measurements Data Stages and correspond to the commutations in the inverter 0 0 The commutations in the rectifier begin in p M1 or p M5 and end in p M or p M8 ... (9) During the commutations in the inverter and rectifier, the voltages of the capacitors СS and С0 change correspondingly by the values 2U d and kU , and the voltage of the commutating capacitor...
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Power Quality Harmonics Analysis and Real Measurements Data Part 8 doc
... semiconductor devices The measurements have been done both for the firing angle values of 60, 90 and 1200 el., and load inductance values of 0.1, 10 and 50mH The results are shown in Fig 20 and Fig 21 750V ... the graphics P1, P2 and P3 mean input powers and T1, T2 and T3 temperatures, respectively 3.1 Single-phase uncontrolled bridge rectifier The waveforms of the input powers and junction temperatures ... results and measurements Of course, there are different temperature Thermal Analysis of Power Semiconductor Converters 145 values resulted from experimental tests (60el.exp, 90el.exp and 120el.exp...
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Power Quality Harmonics Analysis and Real Measurements Data Part 9 pptx
... But with the development of power system, more and more highpower nonlinear loads are connected to higher voltage grid and the demand of high voltage and high capacity keeps being enlarged The paper ... principle and the theory about the high power UPQC, some fundamental knowledge about harmonic and harmonic elimination equipments are list below 154 Power Quality Harmonics Analysis and Real Measurements ... in different forms and form many types of HAPF Because of its low cost, HAPF attracts more and more eyes and has been developing very quickly 2.3 UPQC: Combined shunt APF and series APF Unified...
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Power Quality Harmonics Analysis and Real Measurements Data Part 10 docx
... systems are • Parallel resonance: kr, a = 4.94 and 7.05 (τ1 = and dC = 1.0 and 0.5, respectively) and kr, a = 5.13 and 7.33 (τ1 = 6.0% and dC = 1.0 and 0.5, respectively) Characterization of Harmonic ... Power Systems 187 Series resonance: kr, a = 4.95 and 7.03 (τ1 = and dC = 1.0 and 0.5, respectively) and kr, a = 6.16 and 8.74 (τ1 = 7.9% and dC = 1.0 and 0.5, respectively) From these results, it ... (Task 180 Power Quality Harmonics Analysis and Real Measurements Data force on Harmonic Modeling and Simulation, 2003), and |ZP1| and λP are the magnitude and the displacement power factor of the...
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Power Quality Harmonics Analysis and Real Measurements Data Part 11 pptx
... Quality Harmonics Analysis and Real Measurements Data corresponding to the above data are rL = 27.4, λL = and 0.95 (Cases and 2, respectively) and τ1 = 6.1.2 Experimental measurements of the series ... 0, dC = and the maximum traction load (i.e., SL = 75 MVA), the ratio rL = RL/XS = λL·SS/SL is 145.08 and 9.92 and the resonance is located at harmonics kr, a = 21.6 and 6.0 on the French and UK ... medical and hospital devices 196 Power Quality Harmonics Analysis and Real Measurements Data In this chapter we review our novel approach for studying the effect of switch mode devices and present...
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