This work proposes a moving target defense (MTD) strategy to detect coordinated cyber-physical attacks (CCPAs) against power grids. The main idea of the proposed approach is invalidate knowledge that attackers use mask effects their physical attack by actively perturbing grid’s transmission line reactances via distributed flexible AC system (D-FACTS) devices. MTD design consists two parts. Firs...

Abstract With the continuous increase of wind power permeability, dynamic behavior system also changes, which has a great impact on setting low-frequency load-shedding scheme. The original scheme no good adaptability to high-permeability power. So, this article analyzes principles turbines in grid frequency control. This paper expounds principle strategy configuration. Connecting with actual op...

abstract in this study the relationship among perfectionism, defense styles and depression symptoms was studied. participants were 426 undergraduate students from the university of guilan (264 females, 162 males), who were selected through randomized clustering multistage method. all participants were asked to complete the multidimensional perfectionism scale (hewitt & flett, 1991), the defense...

In a two-party legislature, districts represented by the majority may receive greater funds if majority-party legislators have greater proposal power or disproportionately form coalitions with each other. Funding types received by districts may depend on their legislators’ party identity when party preferences differ. Estimates from the United States, using fixedeffect and regression-discontinu...

I propose a simple quantitative model of how the power of a leader over a group is amplified when he or she starts to order the group. This model implies that a small wellinformed minority can easily govern a previously ordered majority such as hijacked passengers. The model leads to the concept, “group defense,” which stresses the importance of group members resisting enemy ordering and creati...

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 I. Ontological Justifications for Anarchism . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 II. Origins of an Epistemological Defense of Anarchism . . . . . . . . . . . . . . . . . . . . 5 A. ...

The guerrillas are not alone in using violence to control territory. As their presence and power have expanded, so have the illegal selfdefense organizations, also known as paramilitaries, dedicated to eradicating the insurgency. The autodefensas, or self-defense groups, are the third party in Colombia’s three-sided civil conflict.1 Local armed self-defense groups have developed throughout Colo...

for each country, national security in the most urgent and significant value and need, so each government tries to justify its policies and strategies in order to reach and preserve national security. acquiring national security is, people should share national interests by haying health, land integrity, independence, power, credits and all the values generally. they should be sure of this secu...