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Dissertations / Theses on the topic 'Hurdle models'

Author: Grafiati

Published: 4 June 2021

Last updated: 26 July 2025

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1

Barrón, Manuel. "Exclusion and Discrimination as Sources of Inter-Ethnic Inequality in Peru." Economía, 2012. http://repositorio.pucp.edu.pe/index/handle/123456789/117536.

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According to the 2003 National Household Survey, mean labour income for an indigenous worker is only 56% of that for a non-indigenous worker. Studies of ethnic discrimination in Peru’s labour markets generally find that discrimination is too low to explain inequalities of this magnitude. However, Sigma Theory (Figueroa 2003) predicts that social exclusion is a source of inter-ethnic inequality, and that has not been empirically tested. The primary aim of this paper is to fill this gap by estimating the extent to which exclusion and discrimination contribute to income inequality. Hurdle models

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2

Bhaktha, Nivedita. "Properties of Hurdle Negative Binomial Models for Zero-Inflated and Overdispersed Count data." The Ohio State University, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=osu1543573678017356.

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3

Zeileis, Achim, Christian Kleiber, and Simon Jackman. "Regression Models for Count Data in R." Foundation for Open Access Statistics, 2008. http://epub.wu.ac.at/4986/1/Zeileis_etal_2008_JSS_Regression%2DModels%2Dfor%2DCount%2DData%2Din%2DR.pdf.

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The classical Poisson, geometric and negative binomial regression models for count data belong to the family of generalized linear models and are available at the core of the statistics toolbox in the R system for statistical computing. After reviewing the conceptual and computational features of these methods, a new implementation of hurdle and zero-inflated regression models in the functions hurdle() and zeroinfl() from the package pscl is introduced. It re-uses design and functionality of the basic R functions just as the underlying conceptual tools extend the classical models. Both hurdle

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4

Zeileis, Achim, Christian Kleiber, and Simon Jackman. "Regression Models for Count Data in R." Department of Statistics and Mathematics, WU Vienna University of Economics and Business, 2007. http://epub.wu.ac.at/1168/1/document.pdf.

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The classical Poisson, geometric and negative binomial regression models for count data belong to the family of generalized linear models and are available at the core of the statistics toolbox in the R system for statistical computing. After reviewing the conceptual and computational features of these methods, a new implementation of zero-inflated and hurdle regression models in the functions zeroinfl() and hurdle() from the package pscl is introduced. It re-uses design and functionality of the basic R functions just as the underlying conceptual tools extend the classical models. Both model c

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5

Carreira, Inês Duarte. "Modelling dependence between frequency and severity of insurance claims." Master's thesis, Instituto Superior de Economia e Gestão, 2017. http://hdl.handle.net/10400.5/14631.

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Mestrado em Actuarial Science<br>A estimação da perda individual é uma importante tarefa para calcular os preços das apólices de seguro. A abordagem padrão assume independência entre a frequência e a severidade dos sinistros, o que pode não ser uma suposição realística. Neste texto, a dependência entre números e montantes de sinistros é explorada, num contexto de Modelos Lineares Generalizados. Um modelo de severidade condicional e um modelo de Cópula são apresentados como alternativas para modelar esta dependência e posteriormente aplicados a um conjunto de dados fornecido por uma seguradora

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6

Costa, Yuri Lacerda. "Modelando atualizaÃÃo bayesiana com muitos nÃo-atualizadores: o caso do prÃprio homicÃdio subjetiva risco de vitimizaÃÃo." Universidade Federal do CearÃ, 2015. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=14321.

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nÃo hÃ<br>Nosso principal objetivo neste estudo Ã investigar o papel da heterogeneidade na atualizaÃÃo, depois de um choque de informaÃÃo, do risco subjetivo sobre vitimizaÃÃo de homicÃdio. Nesse sentido, os dados utilizados neste trabalho tambÃm atestam a superestimaÃÃo do crime encontrada na literatura. A novidade Ã que os entrevistados receberam um choque de informaÃÃo que consiste na taxa oficial de homicÃdios, mas a grande maioria deles mantÃm a mesma percepÃÃo inicial. Ao propor um modelo de Update Bayesiano permitindo que nenhuma atualizaÃÃo fosse realizada, dois modelos foram desenvolv

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7

Cás, Felippe Ramos Da. "Determinantes da cobertura de esgotamento sanitário no Brasil." Universidade do Estado do Rio de Janeiro, 2009. http://www.bdtd.uerj.br/tde_busca/arquivo.php?codArquivo=1197.

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Fundação de Amparo à Pesquisa do Estado do Rio de Janeiro<br>Apesar dos progressos recentes do setor de saneamento básico no Brasil, muitas dificuldades ainda precisam ser superadas. A desigualdade no acesso a esses serviços bem como a fragmentação das políticas públicas e a ausência de marco regulatório podem ser citados como os principais desafios no setor. Este estudo tem por objetivo analisar os determinantes da cobertura de saneamento básico no Brasil, com base na Pesquisa Nacional de Saneamento Básico de 1989 e 2000 e nos Censos demográficos de 1991 e 2000 elaborados pelo Instituto Brasi

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8

Blick, Matthew. "An investigation into food-away-from-home consumption in South Africa." Diss., University of Pretoria, 2014. http://hdl.handle.net/2263/46249.

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The food-away-from-home (FAFH) sector in South Africa has continued to increase in popularity. This is illustrated by the increased presence of FAFH in the diets of the country’s citizens. However, the sector in South Africa remains un-researched with regard to understanding household preferences and the composition of consumer expenditure. This study analyses the effects of income and socio-demographic variables on FAFH expenditure for South Africa. These results will be useful to the foodservice sector and policy makers in order to identify potential customers, respond to current customers’

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9

Aïssaoui, Safae. "Collaborations science-industrie et innovation dans les firmes françaises : impacts et déterminants." Thesis, Grenoble, 2011. http://www.theses.fr/2011GRENA022.

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Le travail présenté dans cette thèse prend pour cadre d'analyse les systèmes d'innovation et vise à étudier les effets et les déterminants des collaborations science-industrie. Notre démarche empirique repose sur la combinaison entre une analyse statistique et économétrique de données nationales, et la réalisation d'enquêtes exploratoires sur un territoire donné. Pour déterminer l'impact de ces collaborations sur l'innovation des firmes, nous considérons deux mesures de l'innovation : le dépôt de brevet et l'intensité d'innovation. En distinguant entre deux types de collaborations académiques

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10

Saigiridharan, Lakshidaa. "Dynamic prediction of repair costs in heavy-duty trucks." Thesis, Linköpings universitet, Statistik och maskininlärning, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-166133.

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Pricing of repair and maintenance (R&M) contracts is one among the most important processes carried out at Scania. Predictions of repair costs at Scania are carried out using experience-based prediction methods which do not involve statistical methods for the computation of average repair costs for contracts terminated in the recent past. This method is difficult to apply for a reference population of rigid Scania trucks. Hence, the purpose of this study is to perform suitable statistical modelling to predict repair costs of four variants of rigid Scania trucks. The study gathers repair da

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11

Almojel, Suliman. "Characteristics of United States Seafood Consumers." UKnowledge, 2016. http://uknowledge.uky.edu/agecon_etds/38.

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In this thesis, I conducted an analysis of the consumption patterns associated with demographic and socio-economic characteristics, using Tobit and double-hurdle models. Data were collected for 11,574 households from the US Bureau of Labor Statistics for the year of 2014. Specific determinants included household size, age, income, gender, education, race, region, marital status, and whether the household lived in a coastal state. The results reveal that seafood expenditures are sequential decisions. Asian racial groups, households headed by married couples, a large number of members in househo

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Bragança, Guilherme Lima. "Como investidores de alta renda alocam sua riqueza no Brasil? Uma análise empírica com dados de fundos de investimento." reponame:Repositório Institucional do FGV, 2009. http://hdl.handle.net/10438/4150.

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Submitted by Guilherme Bragança (guilherme.braganca@bnymellon.com.br) on 2009-12-16T17:43:53Z No. of bitstreams: 1 Dissertação_Guilherme Lima Bragança.pdf: 298406 bytes, checksum: 068b151da0b1307c876da3401fd552e2 (MD5)<br>Approved for entry into archive by Gisele Gammaro(gisele.gammaro@fgv.br) on 2009-12-22T13:33:19Z (GMT) No. of bitstreams: 1 Dissertação_Guilherme Lima Bragança.pdf: 298406 bytes, checksum: 068b151da0b1307c876da3401fd552e2 (MD5)<br>Made available in DSpace on 2009-12-22T13:33:34Z (GMT). No. of bitstreams: 1 Dissertação_Guilherme Lima Bragança.pdf: 298406 bytes, checksum: 0

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13

Hellström, Jörgen. "Count data modelling and tourism demand." Doctoral thesis, Umeå universitet, Institutionen för nationalekonomi, 2002. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-82168.

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This thesis consists of four papers concerning modelling of count data and tourism demand. For three of the papers the focus is on the integer-valued autoregressive moving average model class (INARMA), and especially on the ENAR(l) model. The fourth paper studies the interaction between households' choice of number of leisure trips and number of overnight stays within a bivariate count data modelling framework. Paper [I] extends the basic INAR(1) model to enable more flexible and realistic empirical economic applications. The model is generalized by relaxing some of the model's basic independe

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14

Lockhart, Catherine A. "Where are the women?: Women industrial designers from university to workplace." Thesis, Queensland University of Technology, 2016. https://eprints.qut.edu.au/95735/1/Catherine_Lockhart_Thesis.pdf.

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This thesis explores the experience of being a woman industrial designer, from her circumstances and motivations to study industrial design, through graduation from university and to professional life. It contains both an analysis of in-depth interviews with 19 female graduates from the industrial design course at the University of Technology Sydney (Australia), and a public exhibition of both their work and their reflections on being female designers.

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15

Patterson, John Edward. "A hurricane loss evaluation model (HURL) to quantify the relationships between hurricane forces and the damage inflicted upon residential structures in Kure Beach, North Carolina, USA." Thesis, Heriot-Watt University, 2006. http://hdl.handle.net/10399/190.

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The scope of this research is to produce a single event model, the Hurricane Loss Evaluation Model (HURL), to evaluate the damage inflicted upon residential structures located in Kure Beach, NC, USA by a major hurricane. The investigation qualifies the relationships between the hurricane forces and the damage associated with the residential structures located in the coastal community. The subsequent results fills the voids of the present models by providing a model that is produced at minimal cost using public data and one that is able to provide a statistical damage evaluation tool. The exami

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16

Rutgersson, Christoffer, and Anders Uddenberg. "Growth made simple : How to grow a small company into a large corporation." Thesis, Linköpings universitet, Industriell marknadsföring och industriell ekonomi, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-64605.

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This study is about rapid growth in SMEs from an entrepreneur’s or manager’s perspective and it aim to find practices in order to enable and drive rapid growth. The purpose of this thesis is to understand how owner-led small businesses can be managed in order to maximize the profitable long term growth of the company. In order to understand this we have had a pragmatic perspective and have attempted to find practices that drive and enable fast growth. The study consists of an extensive literature study on the subject and five case studies of Swedish rapid growth companies. Each case study cons

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17

Maman, Waziri Khalid. "A stochastic earnings frontier approach to investigating labour market failures." Thesis, Aix-Marseille, 2018. http://www.theses.fr/2018AIXM0164/document.

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Cette thèse de doctorat examine les principales défaillances du marché du travail qui entraînent que les travailleurs n’arrivent pas à obtenir la pleine rémunération potentielle qui corresponde à leur capital humain. Il y a « inefficacité salariale » lorsque le salaire obtenu est inférieur au maximum atteignable. Dans un tel cas, les salariés reçoivent un salaire injuste par rapport au capital humain disposé. Cela décourage à investir dans son capital humain ce qui aura tendance à réduire la productivité totale, à affaiblir la compétitivité et à nuire à la croissance économique du pays. La con

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18

Matula, Dominik. "Modely pro data s nadbytečnými nulami." Master's thesis, 2016. http://www.nusl.cz/ntk/nusl-352690.

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The aim of this thesis is to provide a comprehensive overview of the main approaches to modeling data loaded with redundant zeros. There are three main subclasses of zero modified models (ZMM) described here - zero inflated models (the main focus lies on models of this subclass), zero truncated models and hurdle models. Models of each subclass are defined and then a construction of maximum likelihood estimates of regression coefficients is described. ZMM models are mostly based on Poisson or negative binomial type 2 distribution (NB2). In this work, author has extended the theory to ZIM models

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19

Neves, Ana Isa Veríssimo. "Construção de uma tarifa de responsabilidade civil automóvel." Master's thesis, 2017. http://hdl.handle.net/10451/30528.

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Tese de mestrado em Matemática Aplicada à Economia e à Gestão, apresentada à Universidade de Lisboa, através da Faculdade de Ciências, 2017<br>A atividade seguradora oferece aos seus clientes a transferência de eventuais responsabilidades destes, assim como prejuízos por danos sofridos pelos seus bens, mediante o pagamento de um prémio de seguro, valor que deverá permitir a obtenção de resultados de exploração satisfatórios. Estas responsabilidades e danos não são conhecidos no momento em que o prémio é calculado, pelo que deverão ser estimados. No entanto, diferentes indivíduos enquadram-se e

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20

Chang, Cheng-Hsi, and 張正熹. "Hurdle Model in Multi-Attribute Utility Data on Epidural Analgesia in Labor." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/90206271730725394041.

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碩士<br>國立臺灣大學<br>流行病學與預防醫學研究所<br>100<br>Background Clinical decision making is always affected by a constellation of factors. The elucidation of the relationships of these factors to the final decision is of paramount importance. Multi-attribute utility (MAU) theory has been successfully used to model the decision process of parturients in Taiwan about EA, and a hierarchical questionnaire on the basis of MAU theory can predict pre-labor decision and final decision of parturients. However, the two-stage property of MAU data needs specific statistical methods, such as hurdle model for analysi

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21

Trivedi, Rohitkumar, and T. Teichert. "The Janus-Faced Role of Gambling Flow in Addiction Issues." 2017. http://hdl.handle.net/10454/15645.

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Yes<br>Flow experience has been widely investigated in experiential activities such as sports, the performing arts, gaming and Internet usage. Most studies focus on the positive aspects of flow experience and its effect on performance. In stark contrast, gambling research focusing on the negative side of addiction lacks an in-depth investigation of gamblers’ (positive) flow encounters. This separation of research lines seems out of place given that recent research indicates connections between flow and addiction. Joining both constructs in a causal effects model helps to gain a better understa

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22

Jen, Hsiao-Hsuan, and 任小萱. "Queue, Hurdle, and Coxian Phase-type Model for Time Distributions Related to Early Detection and Hospitalization of Colorectal Cancer." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/90023214285973387246.

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碩士<br>國立臺灣大學<br>流行病學與預防醫學研究所<br>103<br>Background As the incidence rate of colorectal cancer (CRC) has been increasing in Taiwan, early detection of CRC through fecal immunochemical test (FIT) screening first and then colonoscopy examination and hospitalization of CRCs cannot be overemphasized. However, the arrival rate of screenees, the non-compliers of undergoing colonoscopy, the waiting time (WT) for undergoing colonoscopy, and the length of stay (LOS) for CRCs has rendered the conventional queue model infeasible. Aims The objective was to integrate the queue process, hurdle model, and Coxi

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23

Tian, Cheng. "Překážkové modely v neživotním pojištění." Master's thesis, 2018. http://www.nusl.cz/ntk/nusl-372991.

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A number of articles only present hurdle models for count data. we are motivated to present hurdle models for semi-continuous data. Because semi- continuous data is also commonly seen in non-life insurance. The thesis deals with the parameterization of various hurdle models for semi-continuous data besides for count data in non-life insurance. Two components of a hurdle model are modeled separately. A hurdle component is modeled by a logistic regression. For a semi-continuous data, a continuous component is modeled by several various regressions. Parameters of each component are estimated thro

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24

Trivedi, Rohitkumar, and T. Teichert. "Attitudes, beliefs and impulsivity in online gambling addiction." 2018. http://hdl.handle.net/10454/15640.

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Yes<br>Gambling research often refers to attitude and belief measurements to distinguish between problem and non-problem gamblers. Past studies also indicated that problem gamblers have a tendency to steeply discount rewards. We join both research streams and investigate the relationships between attitudes and beliefs on gambling addiction with the moderating effects of delay discounting using a novel methodological approach of double-hurdle model. We hereby differentiate the five subdimensions of the Gambling Attitude and Belief Scale (GABS): emotions, chasing, luck, attitudes and strategies.

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25

(6949067), Aaron J. Staples. "Consumer Willingness-to-Pay for Sustainability Attributes in Beer: A Choice Experiment Using Eco-Labels." Thesis, 2019.

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<p>Commercial and regional brewers are increasingly investing in sustainability equipment that reduces input use, operating costs, and environmental impact. These technologies often require significant upfront costs that can limit market access to microbreweries. One potential solution for these brewers is to market their product as sustainable and charge a premium for their product to offset some of the costs. A stated preference choice experiment of a nationally-representative sample is undertaken to elicit consumer willingness-to-pay (WTP) for sustainability attributes in beer, thus determi

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