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Accurately evaluating the response capability of electric vehicles (EVs) is very important for an EV aggregator (EVA) to formulate reasonable bidding strategies in ancillary service markets. Most of the methods proposed in the existing literature only evaluate EVs' temporal response capability while ignoring their spatial distribution. In addition, the evaluation results provided by the existing methods are typically deterministic, which fails to characterize the uncertainty of EV trip. The above two issues pose high risk of economic loss for the EVA. To this end, a probabilistic evaluation method of spatial‐temporal response capability for EVA is proposed in this paper. The gravity model is adopted to calculate a spatial transfer probability matrix describing EV owners' trip characteristics between different areas at each time in a region which is divided into several different areas according to the evaluation requirements. Then, the trip chains of EVs are modelled based on the spatial transfer probability matrix, and the states of charge (SOCs) of EVs are tracked in the process. The spatial‐temporal response capability of EVA is evaluated based on charging–discharging states and states of charge of EVs, and the probabilistic evaluation results of response capability are obtained by multiple Monte Carlo simulations. The effectiveness of the proposed method is verified on a real dataset from San Francisco, CA, USA. [ABSTRACT FROM AUTHOR]

MgO‐based binders have been widely studied for decades. Recently, the MgO–SiO2–H2O system was developed as a novel construction material, however, its reaction mechanism remains unclear. This paper investigated the reaction products and kinetics of MgO/silica fume (SF) pastes with MgO calcinated at different temperatures. The results indicate that MgO presented larger grain size after calcination at higher temperature. Mg(OH)2 and magnesium silicate hydrate (M–S–H) gel were formed when using MgO calcined at 850, 950, and 1050°C. However, only M–S–H gel was formed when using MgO calcined at 1450°C. The reaction kinetics of MgO could be described using α = 1 − e−k*t. The reaction rate of MgO increased with decreasing calcination temperature, increasing SF dosage, and the addition of sodium hexametaphosphate. Only M–S–H gel was formed when the reaction rate of MgO was below the demarcation line (about 0.250 × 10−6 s−1), and the corresponding demarcation area was around 14 days. [ABSTRACT FROM AUTHOR]

This article discusses, in brief, about some of the papers presented at the 2001 annual meeting of the American Political Science Association, held in San Francisco, California. All these papers have a common theme to bring legislative affairs into the limelight. The paper "A Tools of the Trade' Look at the Comparing Congress with State Legislatures" offers a primer on comparing and contrasting U.S. Congress with the American state legislatures. The paper "Senate Apprenticeship in Historical Perspective" addresses the conventional wisdom among U.S. senators.

In this paper we examine the effects of different components of corporate culture on two different categories of action in both routine and jolted environments. Data were collected on a heterogeneous sample of 54 corporations in the San Francisco Bay Area. We examined how the values, knowledge, and practices dimensions of corporate culture influenced actions to prepare for responding to future earthquake disasters and actions to mitigate or reduce future physical and associated earthquake losses. The findings show that corporate earthquake culture is a multidimensional concept, that varied elements of culture function to impact corporate action differently is distinct organizational environments, and that culture's impact on organizational action is contingent on the type of action being considered. [ABSTRACT FROM AUTHOR]