نتایج جستجو برای: dgs

تعداد نتایج: 1471  

جعفری, مسعود, منصف, حسن,

In recent years, appearance of Distributed Generation (DGs) in power systems networks has provided important implications. Important advantages of DGs include increased reliability, loss reduction and improving voltage profile. In case of failure in the network, DGs can provide islands (isolated networks) resulting in continuation of supply loads and may reduce the number and/or duration of int...

2012
Jingjing Zhou Mohammad Pashmforoush Henry M. Sucov

The spectrum of human congenital malformations known as DiGeorge syndrome (DGS) is replicated in mice by mutation of Tbx1. Vegfa has been proposed as a modifier of DGS, based in part on the occurrence of comparable phenotypes in Tbx1 and Vegfa mutant mice. Many additional genes have been shown to cause DGS-like phenotypes in mice when mutated; these generally intersect in some manner with Tbx1,...

2016
Yun-Su Kim Changhee Cho

Standalone microgrids, which are mainly constructed on island areas have low system inertia, may result large frequency deviations even for small load change. Moreover, increasing penetration level of renewable energy sources (RESs) into standalone microgrids makes the frequency stability problem even worse. To overcome this problem, this paper proposes an active power sharing method with zero ...

2014
Maria Shabanova Borislav Lazarov

Theoretically DGS (dynamic geometry software) environment allows developing students’ critical thinking via discovering some properties of the figures by exploring DGS applets. Our goal is to examine how this theory works in teaching a new non-trivial geometry concept. We study which van Hiele’s level of geometrical reasoning is covered by the students in two cases. The first testing group work...

2018
Dong Hun Ham Woo Chull Chung Dae Ung Jung

Purpose The purpose of this retrospective study was to evaluate clinical outcomes of endoscopic nerve decompression in patients with deep gluteal syndromes (DGS). Materials and Methods Between October 2013 and March 2015, 24 patients who underwent surgical treatment of DGS were retrospectively included in this study. The mean age was 47 years (range, 35 to 76 years), and there were 11 males a...

Journal: :Hormones 2005
Sofia Kitsiou-Tzeli Aggeliki Kolialexi Ariadni Mavrou

Microdeletions, translocations or other rearrangements of chromosomal region 22q11.2 have been reported in association with >80 different birth defects and malformations occurring in many combinations and with widely differing severity. Furthermore, a tendency to report atypical cases and ascertainment of published series according to the author’s speciality have resulted in the same deletion b...

2011
Tamasi Moyra Susanta Kumar Parui Santanu Das

The modern microwave and millimeter wave communication system demands good filtering characteristics with compact sizes. In this paper the attention has been given towards the design of a good elliptical lowpass filter with sharp transition between passband and stopband, negligible passband insertion loss and wide stop band. A new defected ground structure (DGS) consisting of two square slots c...

2015
Amit Kumar singh Prashant Jain

Most communication system contains an RF front end which performs signal processing with RF filters. Micro strip filters are a low cost means of doing this. Micro strip filters play various roles in wireless or mobile communication systems. There is an increasing demand for newer microwave and millimetre-wave systems to meet the emerging telecommunication challenges with respect to size, perfor...

2011
Hui Yang Fushuan Wen Gerard Ledwich

Distributed generators (DGs) are defined as generators that are connected to a distribution network. The direction of the power flow and short-circuit current in a network could be changed compared with one without DGs. The conventional protective relay scheme does not meet the requirement in this emerging situation. As the number and capacity of DGs in the distribution network increase, the pr...

2013
Xiao-Zheng Lai Ze-Ming Xie Xuan-Liang Cen Zhi-Yong Zheng

In this paper, a novel technique for planar inverted-F antenna (PIFA) with broadband circular polarization and pattern diversity is proposed. A defeated ground structure (DGS) has achieved broadband circular polarized (CP) PIFA by using a square branch at the ground corner with arrow-shaped slot. The pattern diversity PIFA system consists of two CP PIFAs placed symmetrically on the diagonal of ...

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