Fittipaldi, María Clara

Doctora en Ciencias de la Ingeniería, Mención Modelación Matemática / El objetivo de este trabajo es explorar el comportamiento de los procesos de rami ficación evolucionando a tiempo y estados continuos, y encontrar representaciones para su trayectoria y su genealogía. En el primer capítulo se muestra que un proceso de ramifi cación condicionado a no extinguirse es la única solución fuerte de una ecuación diferencial estocástica conducida por un movimiento Browniano y una medida puntual de Po...

Jun, Shi

Frequentist model averaging as a newly emerging approach provides us a way to overcome the uncertainty caused by traditional model selection in estimation. It acknowledges the contribution of multiple models, instead of making inference and prediction purely based on one single model. Functional logistic regression is also a burgeoning method in studying the relationship between functional covariates and a binary response. In this paper, the frequentist model averaging approach is applied to the...

Bear, John Stanley, Bear, John Stanley

Compositions are vectors of nonnegative numbers that sum to a constant, usually one or 100%. They arise in a wide array of fields: geological sampling, budgets,fat/protein/carbohydrate in foods, percentage of the vote acquired by each political party, and more. The usual candidate distributions for modeling compositions -- the Dirichlet and the logistic normal distribution -- have density zero if any component is zero. While statistical methods have been developed for "rounded" zeros, zeros stem...

Rusch, Thomas, Lee, Ilro, Hornik, Kurt, Jank, Wolfgang, Zeileis, Achim

Political campaigning has become a multi-million dollar business. A substantial proportion of a campaign's budget is spent on voter mobilization, i.e., on identifying and influencing as many people as possible to vote. Based on data, campaigns use statistical tools to provide a basis for deciding who to target. While the data available is usually rich, campaigns have traditionally relied on a rather limited selection of information, often including only previous voting behavior and one or two...

Namburi, Sruthi

Master of Science / Department of Computing and Information Sciences / William H. Hsu / Logistic regression is a model for function estimation that measures the relationship between independent variables and a categorical dependent variable, and by approximating a conditional probabilistic density function using a logistic function, also known as a sigmoidal function. Multinomial logistic regression is used to predict categorical variables where there can be more than two categories or classes....

Cronstedt, Axel, Andersson, Rebecca

Readjusting Historical Credit Ratings using Ordered Logistic Re-gression and Principal Component Analysis The introduction of the Basel II Accord as a regulatory document for creditrisk presented new concepts of credit risk management and credit risk mea-surements, such as enabling international banks to use internal estimates ofprobability of default (PD), exposure at default (EAD) and loss given default(LGD). These three measurements is the foundation of the regulatory capitalcalculations and ...

Qiu, D. (Daoying)

Collaborative questioning and answering (CQA) sites such as Stack Overflow are the placement in which community members can ask and answer questions as well as interact with questions and answers. A question may receive multiple answers, and only one may be selected as the best answer, which means that this answer is more suitable for the given question. For the purpose of effective information retrieval, it will be beneficial to automatically predict and select the best answer. This thesis car...

Simmons, Carol Ivy

<p> This dissertation explored several internal and external factors in relation to psychiatric readmissions. Internal factors are directly related to the individual i.e., demographic information, diagnosis, admission history and status. External factors are factors outside of the individuals control i.e., length of hospital stay and reimbursement processes. The goal of the study was to explore the impact of multiple factors in relation to the phenomenon of psychiatric readmissions. Dynamic Syst...

Kannanthanathu, Amal Francis

<p> Drowsy driving has become a serious concern over the last few decades. The rise in the number of automobiles as well as the stress and fatigue induced due to lifestyle factors have been major contributors to this problem. Accidents due to drowsy driving have caused innumerable deaths and losses to the state. Therefore, detecting drowsiness accurately and within a short period of time before it impairs the driver has become a major challenge. Previous researchers have found that the Electroca...

Botes, Michelle

An occurrence which is sometimes observed in a model based on dichotomous dependent variables is separation in the data. Separation in the data is when one or more of the independent variables can perfectly predict some binary outcome and it primarily occurs in small samples. There are three different mutually exclusive and exhaustive classes into which the data from a logistic regression can be classified: complete separation, quasi-complete separation and overlap. Separation (either complete o...

Yi-Xuan, Wu

Thesis (M.A.)--National ChungHsing University Dept Appl Math / Includes bibliographical references

Lamba, Binu

No description available.

Thompson, Gavin Kenneth

No description available.

McGlothlin, Anna E. Stamey, James D. Seaman, John Weldon,

Thesis (Ph.D.)--Baylor University, 2007. / Includes bibliographical references (p. 96-98).

Shavdia, Dewang.

Thesis (M. Eng.)--Harvard-MIT Division of Health Sciences and Technology, 2007. / Includes bibliographical references (leaves 87-89).

Gao, Fangyu.

Thesis (Ph. D.)--University of Wisconsin--Madison, 1999. / Typescript. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 117-124).

Sharma, Dinesh R. McGee, Daniel.

Thesis (Ph. D.)--Florida State University, 2006. / Advisor: Daniel L. McGee, Sr., Florida State University, College of Arts and Sciences, Dept. of Statistics. Title and description from dissertation home page (viewed Sept. 21, 2006). Document formatted into pages; contains xii, 147 pages. Includes bibliographical references.

Brock, Kelly Hans.

Thesis (Ph. D.)--University of Florida, 2004. / Title from title page of source document. Document formatted into pages; contains 177 pages. Includes vita. Includes bibliographical references.

Ozturk, Olcay

In this thesis, Bayesian semiparametric models for the missing data mechanisms of nonignorably missing covariates in logistic regression are developed. In the missing data literature, fully parametric approach is used to model the nonignorable missing data mechanisms. In that approach, a probit or a logit link of the conditional probability of the covariate being missing is modeled as a linear combination of all variables including the missing covariate itself. However, nonignorably missing cov...

Butler, Kenneth Alec

No description available.

Sjamsoe'oed, Roza

Quantitative habitat models of wildlife-habitat relationships are developed to formalize our current understanding about an ecological system. A habitat association model is one of these models that is useful for answering questions about how the habitat is occupied, how much growth habitat is required by the animal, or how the animal selects its food and habitat. Radio telemetry is adopted as a technique for studying home range and habitat use. The major objective of a radio telemetry study is ...

Sharif, Abshir

No description available.

Shah, Mansoor Ali, Chao, Hoyu

Background: According to experts logistics outsourcing is a process and companies should develop their understanding about it as a process. Literature suggests a systematic and strategic approach for this process and also presents different models and aspects to improve logistics outsourcing as a process. But some scholars reveal a gap in literature regarding logistics outsourcing process in SMEs. They suggest in the discussion regarding logistics outsourcing as a process SMEs are totally ignore...

Javed, Kamran

There has been a quick development in the wireless network area during the last decade. Mostly these days the focus in the wireless area is on very high speed and long range applications. This thesis describes how ZigBee is suitable for wireless sensor networks in logistic telemetry applications for global managing and monitoring of goods. ZigBee has been developed by the organization named as ‘ZigBee Alliance’ as a new wireless standard for the wireless solutions based upon the IEEE 802.15...

Sun, Xiuzhen

This dissertation consists of three projects in matched case-control studies. In the first project, we employ a general bias preventive approach developed by Firth (1993) to handle the bias of an estimator of the log-odds ratio parameter in conditional logistic regression by solving a modified score equation. The resultant estimator not only reduces bias but also can prevent producing infinite value. Furthermore, we propose a method to calculate the standard error of the resultant estimator. A c...

Wan, Kam-ming, Galaxy., 尹錦銘.

published_or_final_version / Applied Statistics / Master / Master of Social Sciences

Yasin, Naci.

No description available.

Myette, Kevin M.

No description available.

Connoly, Robert C.

No description available.

Phan Vandeth, 潘文德

碩士 / 南台科技大學 / 企業管理系 / 95 / The rise in globalization has compelled the company to become more competitive in order to survive in this new tough business arena. This competitiveness is not bound to be a better production, indeed it goes beyond this and organizational performance as whole which involves from suppliers until the end users. Third party logistic service providers (or logistic service provider) have becoming a major source of competitive advantage lately as the trend of outsourcing is...

Belyaeva, Elena

No description available.

Fok, Yin-wai, 霍彦維

The thesis aims to investigate how the development of Internet consumerism in the age of web 2.0 shifted the conventional manufacturer and customer relationship, and transforms the consumer’s behavior inherited from Fordism and post Fordism period hence re-shaping the urban and logistics landscape. Web2.0 emphasis interaction and exchanging information between individuals and business corporates, two major fundamental changes to traditional consumer’s behavior would be discussed in the thesis...

Legg, Robert Paul

Approved for public release, distribution is unlimited / This thesis addresses the application of integrated logistic support (ILS) principles to Navy medical material programs, describes some of the factors affecting cost and organizational relationships, presents a survey of audit reports and interviews with medical material managers, and makes recommendation for improving the management and maintenance support of medical material and equipment. Conclusions indicate that ILS is both highly es...

Clark, Aaron James

Current models used to forecast production in unconventional oil and gas formations are often not producing valid results. When traditional decline curve analysis models are used in shale formations, Arps b-values greater than 1 are commonly obtained, and these values yield infinite cumulative production, which is non-physical.. Additional methods have been developed to prevent the unrealistic values produced, like truncating hyperbolic declines with exponential declines when a minimum product...

Andersson, Anja

Detta examensarbete har utförts hos Swedtrac Trafik AB som är ett dotterbolag till Swedtrac AB. Swedtrac Trafik AB har trafikutövartillstånd och erbjuder utbildningar inom alla trafiksäkerhetsrelaterade delar av järnvägsverksamheten. Företaget har också verksamhet som löser kundernas transportbehov. Swedtrac Trafik AB baserar sin verksamhetsutveckling på processer vilket innebär att en processorienterad verksamhetsstyrning behövs för att klara dagens allt intensivare konkurrens på en global mark...

Elassar, Ghada

Nowadays, safety and environmental awareness about the increased industrial accidents have become a critical issue that concerns both, individuals and governmental policies. This leads to higher demands on the manufacturing industry to be safer and more environmentally friendly. Recently, there has been a number of industrial accidents and serious fires in the world that have increased because of using plastic composite IBC containers in industrial manufacturing. And this becomes a common import...

Roberts, Brook R.

No description available.

Hunter, Curtis Stanley

No description available.

Pang, Menglan

Background: It has been noted in epidemiology and biostatistics that when the odds ratio (OR) is used to measure the causal effect of a treatment or exposure, there is a discrepancy between the marginal OR and the conditional OR even in the absence of confounding. This is known as non-collapsibility of the OR. It is sometimes described (incorrectly) as a bias in the estimated treatment effect from a logistic regression model if an important covariate is omitted. Objectives: Distinguish confoundi...

Kulmatitskiy, Nikolay

Statistical analysis of network data is an active field of study, in which researchers inves- tigate graph-theoretic concepts and various probability models that explain the behaviour of real networks. This thesis attempts to combine two of these concepts: an exponential random graph and a centrality index. Exponential random graphs comprise the most useful class of probability models for network data. These models often require the assumption of a complex dependence structure, which creates c...

Grevesmühl, Vasco, Chehreh, Reza

The research question explores the viable options a shipper has in using different logistic solutions. An investigation was conducted by first understanding the different provider levels based on their activities and then differentiate the logistic solutions based on attributes that are important for a shipper in their supply chain. These attributes were; organization, information technology (IT), flexibility and transportation quality aspects. Once the investigation was done, it was applied on ...

Altintan, Derya

Population dynamics is the dominant branch of mathematical biology. The first model for population dynamics was developed by Thomas Malthus. A more complicated model was developed by Pierre Fran&ccedil / ois Verhulst and it is called the logistic equation. Our aim in this thesis is to extend the models using piecewise constant arguments and to find the conditions when the models have fixed points, periodic solutions and chaos with investigation of stability of periodic solutions.

Chen, Huanyu

The multilevel logistic model is used to analyze hierarchical data with binary outcomes, to detect variation both between and within clusters. I extended explicit variance formulae for a fixed effect in two level model for balanced binary data to account for imbalance both between and within clusters. The derivation of the variance is based on a linearization of the two level logistic model using first order marginal quasilikelihood (MQL1) estimation. In a simulation study, I used second order p...

Trong Nghia Le, 黎重義

碩士 / 義守大學 / 管理碩博士班 / 104 / Logistics has appeared in Vietnam two decades ago, through process integration. Logistics devoted 15-20% GDP of Vietnam is proportionate to US$12 billion each year. Beside the development of economic growth, the demand of transporting goods becomes more and more significant. But domestic Logistics companies are missing out of the market share. Multinational companies are dominating the Vietnam transportation market. In order to find out the problems of losing market sh...

liou tzy hsing, 劉姿杏

碩士 / 國立中興大學 / 應用數學系 / 93 / The method of regression is a kind of indispensable analysis tool, especially when we discuss the relation between a response variable and one or more explanatory variables. But traditional linear regression can only be impolyed when the response variable is continuous. If the response variable is discrete or categorical, then the logistic regression model can be used for solving this kind of problem. This article discusses the ploytomous logistic regression models. T...

Liu, Xiang

In this thesis, we explore a multi-indexed logistic regression (MILR) model, with particular emphasis given to its application to time series. MILR includes simple logistic regression (SLR) as a special case, and the hope is that it will in some instances also produce significantly better results. To motivate the development of MILR, we consider its application to the analysis of both simulated sine wave data and stock data. We looked at well-studied SLR and its application in the analysis of ti...

In this dissertation address the problem of an ill-conditioned information matrix in logistic regression in the presence of errors in the response variable. The problems that ill-conditioning cause in the generalized linear model framework are reviewed. Some alternative estimators are suggested, evaluated and compared to commonly used estimators The logistic regression model and the misclassification logistic regression model are particular cases of the GLM. The misclassification model is affect...

Weng, Yu

We consider the problem of maximum likelihood estimation of logistic sinusoidal regression models and develop some asymptotic theory including the consistency and joint rates of convergence for the maximum likelihood estimators. The key techniques build upon a synthesis of the results of Walker and Song and Li for the widely studied sinusoidal regression model and on making a connection to a result of Radchenko. Monte Carlo simulations are also presented to demonstrate the finite-sample performa...

White, James Anthony Lawrence

Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Geology and Geophysics, 1958. / "June 1958." / Includes bibliographical references (leaves [213]-[219]). / Introduction: The most apparent characteristic of the modern world economy is change, various in type, frequent in occurrence, and often striking. It is to be expected that economists have tried to approach these changes analytically and determine their causes, and their nature, and in so doing have achieved a certain measure of...

Ando, Megumi, M. Eng. Massachusetts Institute of Technology

Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2010. / Cataloged from PDF version of thesis. / Includes bibliographical references (p. 63-64). / A key generation scheme is proposed and its performance analyzed. The method, the logistic map scheme (LMS), is applicable for use on wireless networks because it does not require devices to engage in computationally intensive algorithms. In addition, the method is shown to achieve reliabil...