Florida State University

About: Florida State University is a education organization based out in Tallahassee, Florida, United States. It is known for research contribution in the topics: Population & Poison control. The organization has 25117 authors who have published 65361 publications receiving 2527087 citations. The organization is also known as: FSU & Florida State.

Are Survey Experiments Externally Valid

Abstract: Social science researchers seek to establish causal relationships that are generalizable—that is, they try to maximize internal and external validity. Survey experiments are becoming more popular among scholars because they seem to possess both properties. The random assignment of respondents to treatment and control conditions reveals whether one factor causes another, whereas the use of a representative sample allows generalization to the larger population. However, even in nationally representative survey experiments, external validity may still be a concern if the treatments do not resemble the relevant phenomena in question or if the experimental setting exaggerates the effect of the stimulus. This article investigates a question that recent studies have raised (e.g., Gaines, Kuklinski, and Quirk 2007; Kinder 2007) but that has not been examined empirically: are the causal findings of survey experiments reliable predictors of how opinion changes in the wake of actual political events? For researchers using survey experiments, the implicit assumption is that a significant treatment effect says something about the direction, if not the rough magnitude, of effects that might be expected to occur in the real world (Gaines, Kuklinski, and Quirk 2007, 5). Our study investigates this assumption. We do so by

Sizing Strategy of Distributed Battery Storage System With High Penetration of Photovoltaic for Voltage Regulation and Peak Load Shaving

Abstract: This paper proposes an effective sizing strategy for distributed battery energy storage system (BESS) in the distribution networks under high photovoltaic (PV) penetration level. The main objective of the proposed method is to optimize the size of the distributed BESS and derive the cost-benefit analysis when the distributed BESS is applied for voltage regulation and peak load shaving. In particular, a system model that includes a physical battery model and a voltage regulation and peak load shaving oriented energy management system (EMS) is developed to apply the proposed strategy. The cost-benefit analysis presented in this paper considers factors of BESS influence on the work stress of voltage regulation devices, load shifting and peaking power generation, as well as individual BESS cost with its lifetime estimation. Based on the cost-benefit analysis, the cost-benefit size can be determined for the distributed BESS.

Regenerative Analysis and Steady State Distributions for Markov Chains

Abstract: We apply regenerative theory to derive certain relations between steady state probabilities of a Markov chain. These relations are then used to develop a numerical algorithm to find these probabilities. The algorithm is a modification of the Gauss-Jordan method, in which all elements used in numerical computations are nonnegative; as a consequence, the algorithm is numerically stable.