when power systems are expanded and connected together with weak tie lines, the low-frequency oscillations are increased and the stability margin of the power system decreases. therefore, when designing the transmission system to be used, it is necessary to maintain the dynamic stability of the power system, and to make sure to have the most possible stability margin. sssc is a facts device con...

Changes in credit risk may arise when either the value or the risk of corporate assets changes. Changes in the equity value associated with the changes in the asset value and changes in asset risk can be characterized into potentially countervailing direct and indirect effects. The indirect effect of risk on equity value is a function of factors that affect the debt value of including leverage,...

This paper aims to study the effect of herding on buy and hold, momentum and contrarian strategy. In this research, the cross-sectional absolute deviation is used to identify herding behavior in twenty industries in Tehran stock market. It is observed that the down and boom periods had more industries with herding. Moreover, the weak herding is more common than the strong herding in this market...

background: the iranian healthcare system is primarily an insurance based system. this structure has an important influence on the efficiency and equity of the provision of healthcare in iran. this paper reviews the history of the iranian healthcare system and the impact of the iranian health insurance system on healthcare performance based on the results of interviews with key opinion leaders ...

conclusions it has the potential to cause disseminated infection, and an increasing number of immunocompromised patients prone to disease and the suboptimal preventive potency of this vaccine suggest the need for a global attempt to review its benefits and disadvantages. results worldwide, a proportion of new cases with multidrug-resistant tb (mdr-tb) were reported at 3.5% in 2013 without a sig...

abstract background: nursing process is a scientific approach in the provision of qualified nursing cares. however, in practice, the implementation of this process is faced with numerous challenges. with the knowledge of the challenges associated with the implementation of the nursing process, the nursing processes can be developed appropriately. due to the lack of comprehensive information on ...

The paper discusses three major issues First it discusses why it makes sense to approach problems in a hierarchical fashion It de nes the class of hierarchically decomposable functions that can be used to test the algorithms that approach problems in this fashion Finally the Bayesian optimization algorithm BOA is extended in order to solve the proposed class of problems

Abstract. A method is presented for constructing effective stochastic models for the timeevolution of spatial averages in finite-difference discretizations of partial differential equations. This method relies on the existence of a time-scale separation in the dynamics of the spatial averages and fine-grid variables. The spatial averages, thus, are treated as the slow variables in the system an...