نتایج جستجو برای: generalized heckman model

تعداد نتایج: 2231292  

Journal: :J. Systems Science & Complexity 2008
Qibing Gao Yaohua Wu Chunhua Zhu Zhanfeng Wang

Received: 22 August 2007 / Revised: 7 April 2008 c ©2008 Springer Science + Business Media, LLC Abstract In generalized linear models with fixed design, under the assumption λn → ∞ and other regularity conditions, the asymptotic normality of maximum quasi-likelihood estimator β̂n, which is the root of the quasi-likelihood equation with natural link function ∑n i=1 Xi(yi−μ(X ′ iβ)) = 0, is obtain...

2008
Neil O’Connell

We introduce a notion of continuous crystal analogous, for general Coxeter groups, to the combinatorial crystals introduced by Kashiwara in representation theory of Lie algebras. We explore their main properties in the case of finite Coxeter groups, where we use a generalization of the Littelmann path model to show the existence of the crystals. We introduce a remarkable measure, analogous to t...

2015

This paper uses a unique panel dataset from China's initial reform of fiscal decentralization to analyze the relationships between fiscal decentralization, local economic development, and rural-rural undocumented inter-provincial labor mobility. Using a modified gravity model with Heckman Maximum Likelihood Estimation method, this paper shows that fiscal decentralization has two contending effe...

2017
Paul Rippon John Rayner J.C.W. Rayner

The smooth testing approach described in [2] has been used to develop a test of the distributional assumption for generalized linear models. Application of the test to help assess Poisson and logistic regression models is discussed. Power is compared to other common tests.

Journal: :international journal of supply and operations management 2015
a lakshmana rao k srinivasa rao

inventory models play an important role in determining the optimal ordering and pricing policies. much work has been reported in literature regarding inventory models with finite or infinite replenishment. but in many practical situations the replenishment is governed by random factors like procurement, transportation, environmental condition, availability of raw material etc., hence, it is nee...

2004
Sara Billey Victor Guillemin Etienne Rassart

We use Gelfand–Tsetlin diagrams to write down the weight multiplicity function for the Lie algebra slkC (type Ak−1) as a single partition function. This allows us to apply known results about partition functions to derive interesting properties of the weight diagrams. We relate this description to that of the Duistermaat–Heckman measure from symplectic geometry, which gives a large-scale limit ...

Journal: :محیط زیست طبیعی 0
هانی حمزه کلکناری دانشجوی کارشناسی ارشد رشتۀ اقتصاد کشاورزی، دانشگاه فردوسی مشهد محمد قربانی استاد گروه اقتصاد کشاورزی، دانشگاه فردوسی مشهد فرزانه علیپوریان دانشجو کارشناسی ارشد رشتۀ اقتصاد کشاورزی، دانشگاه فردوسی مشهد اهون کاسب دانشجوی کارشناسی ارشد رشتۀ اقتصاد کشاورزی، دانشگاه فردوسی مشهد سعید حطیطه دانشجوی کارشناسی ارشد رشته اقتصاد کشاورزی دانشگاه فردوسی مشهد

considering the increase in waste production, scarcity of land allocated to landfill in urban areas, concerns about ecological damages caused by hazardous waste and damages done to the environment, municipal waste management has become of tremendous importance. the study investigated the behavioral patterns of households regarding waste separation at source using data collected through intervie...

Journal: :Circulation. Cardiovascular quality and outcomes 2016
Michael P Thompson Zhehui Luo Joseph Gardiner James F Burke Adrienne Nickles Mathew J Reeves

BACKGROUND As a measure of stroke severity, the National Institutes of Health Stroke Scale (NIHSS) is an important predictor of patient- and hospital-level outcomes, yet is often undocumented. The purpose of this study is to quantify and correct for potential selection bias in observed NIHSS data. METHODS AND RESULTS Data were obtained from the Michigan Stroke Registry and included 10 262 pat...

2015
Nicholas Trachter

Several studies claimed that there is underinvestment in education. Judd (2000) combines Capital Asset Pricing Model (CAPM) techniques with the indivisibility of human capital to compare the return to four-year college graduation with assets of similar risk to find an excess of return to the college investment option. Heckman, Lochner, and Todd (2008) evaluate the internal rate of return of the...

The climate changes have an important role in distribution of plant species. Statistical species distribution models (SDMs) are widely used to predict the changes in species distribution under climate change scenarios. In the peresent study, the distribution of Alopecurus textilis in the current and future climate condition (2050) under the influence of climate change and two scenarios of RCP 4...

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