نتایج جستجو برای: dgs

تعداد نتایج: 1471  

2013
Noradin Ghadimi

Recently, the penetration of Distributed Generation (DG) at medium and low voltages in utility networks is increasing in developed countries and takes special place for them worldwide. Due to the DGs advantages, including use of Renewable Energy which do not pollute environment and has endless nature, the application of DGs can potentially reduce the need for traditional system expansion, contr...

2009
XU KONG

We present a study of the classification of z∼ 1 extremely red objects (EROs), using a combination of Hubble Space Telescope (HST ) Advanced Camera for Surveys (ACS), Spitzer Infrared Array Camera (IRAC), and ground-based images of the COSMOS field. Our sample includes ∼ 5300 EROs with i − Ks ≥ 2.45 (AB, equivalently I − Ks = 4 in Vega) and Ks ≤ 21.1 (AB). For EROs in our sample, we compute, us...

2013
Akbar Danandeh Heresh Seyedi Ebrahim Babaei

Recently, the penetration of Distributed Generation (DG) at medium and low voltages in utility networks is increasing in developed countries and takes special place for them worldwide. Due to the DGs advantages, including using of Renewable Energy which not polluting environment and has endless nature, the application of DGs can potentially reduce the need for traditional system expansion, cont...

2014
M. J. Kasaei

In this paper optimum size and location of capacitors and distributed generations (DGs) are determined simultaneously in a radial distribution network. The objective function includes power losses reduction and voltage profile improvement using ant colony algorithm. Allocation capacitors and of DGs should be carefully determined with the consideration of different planning incentives. It shows ...

2006
GEORGE LOJEWSKI NICOLAE MILITARU MARIAN GABRIEL BANCIU

In this paper some novel types of microwave bandpass filters using defected ground structures are investigated. In the microstrip technology the use of defected ground structures (DGS) allows designs of filters with tight couplings, without the necessity of using very narrow coupling gaps. In multilayer filters DGS can be used as coupling elements between resonators, allowing very compact filte...

2017
Longchang Wang Houlei Gao Guibin Zou

The increasing penetration of inverter-based distributed generations (DGs) significantly affects the fault characteristics of distribution networks. Fault analysis is a keystone for suitable protection scheme design. This paper presents the modelling methodology for distribution networks with inverter-based DGs and performs fault simulation based on the model. Firstly, a single inverter-based D...

2015
Amith S. Jain Hareesh V. Tippur

The reflection-mode Digital Gradient Sensing (r-DGS) method is extended to visualize and quantify dynamic deformations in solids due to stress wave propagation and for damage/disbond detection in layered materials due to impact loading. The r-DGS technique employs digital image correlation principles to quantify two orthogonal surface slopes simultaneously in specularly reflective solids. Here,...

1998
Noah Brosch

Dwarf galaxies (DGs) are more numerous than large galaxies. Most dwarfs in clusters are dEs, but in the field they belong mostly to late types. The importance of late-type DGs in the context of the intergalactic medium (IGM) lies in the fact that (at least some) are probably " young " galaxies forming stars for the first time. Many DGs have significant amounts of interstellar gas, they may form...

2016
Jiaofeng Chen Xue Zhang Jie Li Chenmeng Song Yichang Jia Wei Xiong

The patients with DiGeorge syndrome (DGS), caused by deletion containing dozens of genes in chromosome 22, often carry cardiovascular problem and hearing loss associated with chronic otitis media. Inside the deletion region, a transcription factor TBX1 was highly suspected. Furthermore, similar DGS phenotypes were found in the Tbx1 heterozygous knockout mice. Using ENU-induced mutagenesis and G...

2017
Ebtisam M. Saied

In this paper, a very newly swarm optimization technique namely a dragonfly optimization algorithm (DFOA) is used to allocate and size the distributed generators (DGs) along distribution networks. The multi-objective function is adapted to reduce the total system power loss, decrease the cost of DGs and improve the voltage profile with the resolve of improving the operating performance. In addi...

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