نتایج جستجو برای: ols

تعداد نتایج: 4866  

2014
D. PARAVISINI

In this appendix we expand the explanation in Subsection 4.3.1. The IV estimate of the export elasticity to finance is 7.8 times larger than the OLS estimate. We expect the attenuation bias of the OLS estimator to be of the such order of magnitude. This is why. We are interested in the following model of supply-induced variation in exports —demand variation is absorbed by the product-destinatio...

2016
Eelke de Jong

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...

2016
Gang Wang Shutao Sun Ying Mao Zhiyu Xie Lei Liu

The chromium-catalyzed enantioselective addition of carbo halides to carbonyl compounds is an important transformation in organic synthesis. However, the corresponding catalytic enantioselective arylation of ketones has not been reported to date. Herein, we report the first Cr-catalyzed enantioselective addition of aryl halides to both arylaliphatic and aliphatic ketones with high enantioselect...

Journal: :The Journal of nutrition 2008
Cyril Auger William Mullen Yukihiko Hara Alan Crozier

To investigate the degree of absorption of flavan-3-ols in the small intestine, human subjects with an ileostomy ingested 200 mg of Polyphenon E, a green tea extract, after which ileal fluid and urine, collected over a 24-h period, were analyzed by high-performance liquid chromatography with photodiode array and mass spectrometric detection. The data obtained indicated that although approximate...

2015
Jinpei Ou Xiaoping Liu Xia Li Meifang Li Wenkai Li Krishna Prasad Vadrevu

Recently, the stable light products and radiance calibrated products from Defense Meteorological Satellite Program's (DMSP) Operational Linescan System (OLS) have been useful for mapping global fossil fuel carbon dioxide (CO2) emissions at fine spatial resolution. However, few studies on this subject were conducted with the new-generation nighttime light data from the Visible Infrared Imaging R...

2014
Giulio Srubek Tomassy Valentina Fossati

Since monumental studies from scientists like His, Ramón y Cajal, Lorente de Nó and many others have put down roots for modern neuroscience, the scientific community has spent a considerable amount of time, and money, investigating any possible aspect of the evolution, development and function of neurons. Today, the complexity and diversity of myriads of neuronal populations, and their progenit...

2015
Nathaniel Beck

This article deals with a very simple issue: if we have grouped data with a binary dependent variable and want to include fixed effects (group specific intercepts) in the specification, is Ordinary Least Squares (OLS) in any way superior to a (conditional) logit form? In particular, what are the consequences of using OLS instead of a fixed effects logit model with respect to the latter dropping...

2004
Shigeki Kano Makoto Ohta

This paper investigates the long-run relationship among new hiring, unemployment (job seekers), and unfilled vacancies in Japan, using an annual panel data on 47 prefectures for 1972-1999. We find that these three variables are Ið1Þ processes, and are cointegrated in our panel data. Further, we estimate the panel cointegration equation derived from a Cobb-Douglas matching function by the hetero...

2015
Sara Khodadad Dong-Ho Jang

Abstract: This work presents Analytical Hierarchy Process (AHP) method available in Geographic Information System (GIS) to identify and classify the Penang Island according to the grade of present or potential danger of land failure happening. Landslide susceptibility zonation map has been generated by considering seven factors. Sensitivity analysis was performed in detail by varying the contri...

2012
Jan F. Kiviet

In simple static linear simultaneous equation models the empirical distributions of IV and OLS are examined under alternative sampling schemes and compared with their first-order asymptotic approximations. We demonstrate that the limiting distribution of consistent IV is not affected by conditioning on exogenous regressors, whereas that of inconsistent OLS is. The OLS asymptotic and simulated a...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید