نتایج جستجو برای: dummy variable
تعداد نتایج: 260844 فیلتر نتایج به سال:
Using a panel data set of bilateral export flows from 12 EU countries to 20 OECD trading partners over the period 1992-2003, a panel cointegration approach to estimating the gravity model is adopted to test for the significance of European regional integration. A comparison of the results indicates that a positive and significant coefficient estimate of the EU dummy variable is found for both t...
Care must be taken when interpreting the coefficients of dummy variables in semi-logarithmic regression models. Existing results in the literature provide the best unbiased estimator of the percentage change in the dependent variable, implied by the coefficient of a dummy variable, and of the variance of this estimator. We extend these results by establishing the exact sampling distribution of ...
OBJECTIVE To examine whether the nationwide smoking ban, imposed in 2007, had an impact on the profitability of Belgian restaurants. DATA AND METHODS Objective financial reporting data on 1613 restaurants were analysed with return on assets as the outcome measure. The data were collected from the Belfirst database and cover the period 2004-2009. To assess the impact of the smoking ban, a diff...
This paper examines the presence of day of the week effect anomaly in Dhaka Stock Exchange (DSE). Several hypotheses have been formulated; dummy variable regression and the GARCH (1, 1) model were used in the study. The result indicates that Sunday and Monday returns are negative and only positive returns on Thursdays are statistically significant. Result also reveals that the mean daily return...
The paper describes the experimental validation of biomechanical response Hybrid III 50th Percentile Male Pedestrian Dummy (JASTI, Tokyo, Japan) at low impact velocity (up to 2.2 m/s) in comparison with that human probands. is based on previous research was focused tram-pedestrian crash tests using same dummy. biofidelity dummy analyzed two collision scenarios: anteroposterior (chest impact) an...
Instrumental Variables (IV) estimates are frequently used to correct Ordinary Least Squares (OLS) estimates for simultaneity bias. This paper argues that in many instances, in particular when the endogenous variable is a dummy variable, the measure derived overestimates the effect. It presents a simple method for obtaining a correct estimate and applies this method to data of voluntary health i...
The study is focused on the dynamic response of head and thoracic area an anthropomorphic test device (ATD) during low-impact collisions with a tram. Two collision scenarios were analyzed: frontal impact (a chest as primary contact area) side thigh area). measurements used pedestrian dummy (Hybrid III 50th percentile male dummy, Jasti Co., ltd., Tokyo, Japan) unique pendulum testing machine (im...
The global blogging phenomenon has caught researchers by surprise. While past research has focused on the motivations behind blogging, since the number of weblogs is growing at such an unprecedented rate, the roles played by their visitors should not be overlooked. This chapter presents an empirical analysis of weblogs from a methodological perspective that demonstrates empirical advances in th...
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