نتایج جستجو برای: حمله 2003 امریکا

تعداد نتایج: 126674  

2015
Eric Sagen

Time synchronization is critical to modern electrical power systems. Based on the lessons learned from the postdisturbance analysis of the August 14, 2003, northeast blackout, NERC (North American Electric Reliability Corporation) recommendations place a high priority on implementing time synchronization in data-recording devices. This eliminates or reduces the effort involved in comparing even...

2017
L. Dale Van Vleck C. P. Van Tassell R. A. Westell

Simultaneous genetic evaluations for bulls and cows obtained by mixed model procedures with an animal model incorporating all numerator relationships for artificially sired Holstein cows in northeastern United States were compared with separate (Northeast) mixed model evaluations of cows and sires for predicting genetic evaluations of progeny from dam, sire, and maternal grandsire evaluations. ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه قم - دانشکده حقوق 1393

در دنیای معاصر، انقلاب تکنولوژی و فناوری اطلاعات منجر به ایجاد تحول عمیق در قلمرو و شیوه مبارزه گشته است. و به زورمداران عالم این فرصت را اعطا نموده است که به جای لشکرکشی های پر هزینه و پر تلفات از روش های کم هزینه و تقریبا بدون تلفات برای آسیب رسانی به دیگر کشورها و ملل استفاده نمایند. یکی از این شیوه های نوین مبارزه، حملاتی است که در بستر فضای مجازی صورت می گیرد، و پتانسیل ایجاد تلفات گسترده ...

2007
Bill Siever Ann Miller Daniel Tauritz

One of the most promising applications of the family of electronic devices called Flexible AC Transmission System (FACTS) devices is to better regulate power flow in transmission grids. In particular, the Unified Power Flow Controller (UPFC) is the best choice for complete control of power flow control. By selecting proper installation locations and control techniques, UPFCs may be able to prev...

2017
Kjersti O. Strand Svein Sundby Jon Albretsen Frode B. Vikebø

Observations (1978–1991) of distributions of pelagic juvenile Northeast Arctic cod (Gadus morhua L.) show that up to 1/3 of the year class are dispersed off the continental shelf and into the deep Norwegian Sea while on the way from the spring-spawning areas along the Norwegian coast to the autumn-settlement areas in the Barents Sea. The fate of this variable fraction of pelagic juveniles off-s...

2013
Shaddi Hasan Yahel Ben-David Giulia C. Fanti Eric A. Brewer Scott Shenker

Large-scale communications blackouts, such as those carried out by Egypt and Libya in 2011 and Syria in 2012 and 2013, have motivated a series of projects that aim to enable citizens to communicate even in the face of such heavy-handed censorship efforts. A common theme across these proposals has been the use of wireless mesh networks. We argue that such networks are poorly equipped to serve as...

2003
Jie Chen James S. Thorp Ian Dobson

A hidden failure embedded DC model of power transmission systems has been developed to study the power law distributions observed in North American blackout data. We investigate the impacts of several model parameters on the global dynamics and evaluate possible mitigation measures. The main parameters include system loading level, hidden failure probability, spinning reserve capacity and contr...

2002
Michael J. Reeder

The aim of the New Zealand Southern ALPs EXperiment (SALPEX) was to study chiefly, but not exclusively, how the Southern Alps promote precipitation on the upwind side of the mountain chain in pre-frontal northwesterly airstreams. The third and most extensive field phase of the experiment ran for three weeks during October 1996, and documented two events in considerable detail. The present paper...

Journal: :Physical chemistry chemical physics : PCCP 2015
Xiao-Yu Zhang Jin-Dou Huang Juan-Juan Yu Peng Li Wei-Ping Zhang Thoma Frauenheim

In this study, the electron-transfer properties of alkynylated indenofluorene-diones with various substituents (SiMe3, SiPr3, and SiPh3) that function as n-type organic semiconductors were comparatively investigated at the first-principles DFT level based on the Marcus-Hush theory. The reorganization energies are calculated by the adiabatic potential-energy surface method, and the coupling term...

Journal: :Zootaxa 2013
Matthew J Colloff Stephen L Cameron

Hitherto, the Malaconothridae contained Malaconothrus Berlese, 1904 and Trimalaconothrus Berlese, 1916, defined by the possession of one pre-tarsal claw (monodactyly) or by three claws (tridactyly) respectively. However, monodactyly is a convergent apomorphy within the Oribatida and an unreliable character for a classification. Therefore we undertook a phylogenetic analysis of 102 species as th...

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