نتایج جستجو برای: current measurement placement

تعداد نتایج: 1252297  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شهرکرد - دانشکده ادبیات و علوم انسانی 1389

current studies in second language (l2) learning have revealed the positive role of corrective feedback (cf) in both oral and written forms in different language features. the present study was an attempt to investigate the effect of both direct and indirect written corrective feedback (wcf) on the use of grammatical collocations in l2 writing. the study also sought to examine whether the effec...

In this paper, an efficient and comprehensive hybrid intelligent technique for the optimal placement of phasor measurement units (PMUs) is proposed to minimize the number of PMU installation subjected to full network observability. Three main purposes of PMUs output synchronous measurements are monitoring, control, and protection of power system. We have combined Binary Imperialistic Competitio...

Journal: :journal of periodontology and implant dentistry 0
majid reza mokhtari mehrdad radvar naser sargolzaie amir moeintagavi

background and aims. resonance frequency analysis (rfa) offers a noninvasive clinical measurement of stability and osseointegration of implants; it is a useful tool to establish implant loading time. the rfa values are represented by a quantitative unit called the implant stability quotient (isq) on a scale from 1 to 100. the aim of the present study was to measure the stability of astra tech a...

2013
K. Mazlumi M. Azari S. Beheshti

The standards of power system monitoring, control and protection are elevated by Phasor Measurement Units (PMUs) as an auspicious tool. It is the purpose of this paper to determine the optimal number and locations of PMUs so as to make the system measurement model observable and also estimate the power system state. The proposed modelling approach which models PMU placement as an integer linear...

2013
S. Priya S. Pushpa

The network operators are interested in monitoring passing traffic in a network for reasons of traffic accounting, debugging or troubleshooting, forensics, and traffic engineering. Previous research has focused on monitor placement across the network for maximizing the monitoring utility. But, traffic characteristics and measurement objectives can change dynamically, rendering a placement of mo...

2014
K. S. Chandragupta Mauryan Sri Krishna

This paper presents a review of the Phasor Measurement Units employed in the Modern Power Systems. Synchronized phasor measurements have advanced the power system monitoring, controlling, protecting and operating standards in the recent decades. Its potential can be used effectively in the process of upgrading the current power grids into smart grids. With these ideas in mind, a review on PMU i...

Flexible Alternating Current Transmission Systems (FACTS) devices have been used for several targets in power system, one of the main contributions of the devices is improving operation conditions. In this paper, two types of these devices have been placed to raise voltage profile, minimizing system loss and arising loadability. The suggested FACTS devices are: Unified Power Flow Controller (UP...

2008
Ying Cheng

The method developed for handling multiple constraints, namely the maximum priority index (MPI) method (Cheng & Chang, under review), was shown to be very effective in a simulation study with a national computerized placement test. To be more specific, compared with the currently widely used weighted deviation modelling (WDM) method, the MPI method reduces constraint violations substantially wh...

2001
S. Uchida

Most of the previously reported studies on the auditory brain function of small animals used invasive techniques, such as the insertion or placement of electrodes in the cortex [1]. The invasive measurement is applied to studies on shortterm experiments because maintaining optimum conditions for a long period of time is difficult in small animals. This study focused on the noninvasive measureme...

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