Radesky, Charles William Richard von.

No description available.

Lindgren, Victor, Jansson, Maria

Service and spare part logistics has experienced an increased interest throughout the last decade, as it comprises a large share of companies’ turnover and companies have realized the strategic value of having effective after-sales. Saab AB provides the Swedish Armed Forces with service and maintenance of twenty helicopters mainly based at Malmen air base, Linköping. To provide great service, spare parts need to be kept in stock. Numerous spare parts are expensive, desirably kept on a low invent...

Geroukis, Asterios, Brorson, Erik

In this study, we compare the two statistical techniques logistic regression and discriminant analysis to see how well they classify companies based on clusters – made from the solvency ratio ­– using principal components as independent variables. The principal components are made with different financial ratios. We use cluster analysis to find groups with low, medium and high solvency ratio of 1200 different companies found on the NASDAQ stock market and use this as an apriori definition of ris...

Xue, Xiaolei

This study focused on identifying factors that significantly affect the potentially insolvent status of life insurers. The potentially insolvent status is indicated based on insurer’s Risk-based capital ratio (RBC ratio) reported in the National Association of Insurance Commissioners (NAIC) database of life insurers’ annual statements. A logistic regression analysis is performed to explore the relationship between the RBC insolvent indicator and a set of explanatory variables including insurer’s...

Franzén, Marcus, Råsberg, Patrik

OEM Automatic utför logistiktjänster åt enheter inom OEM-koncernen. För att debitera enheterna för de logistiktjänster som utförs används en kostnadsmodell. I dagsläget finns ett flertal problem med kostnadsmodellen som ger upphov till en missvisande debitering. I examensarbetet har därför en utredning gjorts för hur kostnadsmodellen kan utvecklas för att OEM Automatic ska kunna skapa en mer rättvisande debitering. Tre utvecklingsdelar för kostnadsmodellen har identifierats, vilka är debitering ...

Ho, Chi-San

This work investigates the factors that contribute to financial crises. We first study the Dow Jones index performance by grouping the daily adjusted closing value into a two-month window and finding several critical quantiles in each window. Then, we identify severe downturn in these quantiles and find that the 5th quantile is the best to identify financial crises. We then matched these quantiles with historical financial crises and gave a basic explanation about them. Next, we introduced all e...

Zhan, Wenjing

The key task for a search engine advertising system is, for each query that the search engine receives, to choose what advertisement should be displayed, and in what order. This ranking order has a strong impact on the revenue the search engine receives from the ads. Meanwhile, showing the user an advertisement that they prefer to click on improves user satisfaction. Therefore, it is reasonable to set up click-through rate (CTR) as a weighted ranking criteria. In this project, we aim to develop ...

Wålinder, Andreas

Model selection is an important part of classification. In this thesis we study the two classification models logistic regression and random forest. They are compared and evaluated based on prediction accuracy and metadata analysis. The models were trained on 25 diverse datasets. We calculated the prediction accuracy of both models using RapidMiner. We also collected metadata for the datasets concerning number of observations, number of predictor variables and number of classes in the response v...

Lingaitienė, Olga

The present work focusses on the rational and complex use of land and water transport, depending on the type of goods, technical charakteristics of particular transport facilieties (speed, capacity, environmental pollution, fuel consumption, etc.) and the particular means of transport (automobiles, rail transport or ships).

Cai, Longyao

Veterinarians often perform controlled experiments in which they inoculate animals with infectious diseases. They then monitor the transmission process in infected animals. The aim of such experiments can be to assess vaccine effects. The fitting of individual-level models (ILMs) to the infectious disease data, typically achieved by means of Markov Chain Monte Carlo (MCMC) methods, can be computationally burdensome. Here, we want to see if a vaccination effect can be identified using simpler re...

Junek, William N.

Forecasts of short term volcanic activity are generated using an event tree process that is driven by a set of empirical statistical models derived through logistic regression. Each of the logistic models are constructed from a sparse and geographically diverse dataset that was assembled from a collection of historic volcanic unrest episodes. The dataset consists of monitoring measurements (e.g. seismic), source modeling results, and historic eruption information. Incorporating this data into...

Jo Sang

The goal of the CALS initiative is to enable integration of enterprises on a worldwide basis. The vision is for all or parts of a single enterprise, or for example, an original equipment manufacturer and its suppliers, or a consortium of public and private groups and academia, to be able to work from a common digital database, in real time, on the design, development, manufacturing, distribution and servicing of products. The direct benefits would come through substantial reductions in product-t...

Kennedy, Christopher J.

The objective of this research is to investigate the impact that power quality management can have on the intermediate level of maintenance. Power quality management is a preventative process that focuses on identifying and correcting problems that cause bad power. Using cost-benefit analysis we compare the effects of implementing a power quality management program at AIMD Lemoore and AIMD Fallon. The implementation of power quality management can result in wide scale logistical support changes ...

Kinkade, James D.

This thesis analyzes potential uses of automatic identification technologies to support Army forces on future battlefields. The thesis emphasizes radio frequency (RF) tag systems, but also presents an overview and comparison of six other automatic identification technologies (bar codes, optical character recognition, magnetic stripe, smart cards, optical cards, and voice recognition). The dynamics shaping the Army of the future, the characteristics of that Army, and the characteristics of the lo...

Cottongim, Dale P.

No description available.

Mackel, Andrew Goodwin.

No description available.

Persson, Viktor, Strindlund, Daniel

Byggindustrin är idag en av Sveriges största industrier med en omsättning som under 2012 uppgick till hela 309 miljarder kronor. Studier har dock visat att cirka 35% av den totala kostnaden vid ett byggprojekt är vad som i andra industrier betraktas som slöseri. I detta innefattas aktiviteter som materialhantering, höga lagernivåer och onödiga väntetider. För att förbättra sin logistik kan byggentreprenörer välja att lägga ut vissa aktiviteter på en tredjepartslogistiker. Denna studie har fokuse...

Lian, Tian Tse.

Approved for public release; distribution is unlimited. / This thesis is an application of logistic regression and survival analysis techniques to the study of current estimated potential (CEP), manpower performance, and attrition behavior in the Singapore military. The manpower data includes both active (30%) and reserve personnel (70%) who entered service as early as the late fifties to as recent as the year 1992. The covariates under consideration are education level, academic or overseas mil...

Luo, Violet

In this project, the angles of miniature rose petals throughout the course of their bloom were measured with a digital protractor constructed using a function plotting software. The angle was then modeled as a function of time, and an analogy was drawn from the blooming of rose petals to the logistic growth of populations. The digital method of measurement and the logistic growth model were also applied to cyclamen and hyacinth petals.

Liu, Ying

Rather than construction of a multivariate distribution from given univariate or bivariate margins, recently several papers seek to promote the development and usage of a simple but relatively unknown approach to the specification of models for dependent binary outcomes through conditional probabilities, each of which is assumed to be logistic. These recent proposals were all offered as heuristic approaches to specifying a multivariate distribution capable of representing the dependence of ...

Mohammadifard, Nakisa

Mining online user data has become more and more popular in e-commerce. Businesses are using this data to do customization and user behavior prediction and one main applications of this information is advertisement. In this thesis, we address the problem of finding the influence of advertisements on a user's purchase behavior, by using machine learning methods to analyze purchase data obtained from real online retail systems. The hypothesis driving the model we propose is that different ads have...

Gong, Wei, Kan, Xuan

Background: as a convergence of business activities and information technology, e-commerce has brought massive changes to the supply chain management. Today, many e-commerce companies choose to cooperate with third party logistic service providers to perform or improve their logistic services. Meanwhile, those e-commerce companies con-sistently affect the operational processes of their logistic service providers. This thesis fo-cuses on the case of AliExpress, which is an e-commerce company that...

Hossain, Shahadut

In many fields of statistical application the fundamental task is to quantify the association between some explanatory variables or covariates and a response or outcome variable through a suitable regression model. The accuracy of such quantification depends on how precisely we measure the relevant covariates. In many instances, we can not measure some of the covariates accurately, rather we can measure noisy versions of them. In statistical terminology this is known as measurement errors or err...

Johansson, Cecilia, Ring, Erik

The word logistics probably makes most people think of transportation and storage. These activities makes up the core of logistics and therefore it is sometimes referred to as the science of efficient flow of material. Logistics isn’t all about making everything correct. It’s about making everything right. To receive the right products in the correct numbers at the right time means lower storage costs, less costs for intermediate storage and makes it easier for the construction workers to focus ...

Li, Wan-Yu, 李宛諭

碩士 / 國立彰化師範大學 / 數學系 / 106 / In this essay, we construct a novel dynamical system which models the human population structure of three age groups: young, working age and elderly. The dynamics of the system are analyzed both analytically and numerically. Our result shows that in an open set of parameter space, the system converges to its equilibrium point asymptotically. A transcritical bifurcation occurs when the intrinsic birth rate is equal to the transition rate from the working age group to t...

Diaz Gomez, Mateo Gonzalo

Submitted by Daniele Santos (danielesantos.htl@gmail.com) on 2017-02-23T14:57:58Z No. of bitstreams: 1 Mateo Diaz.pdf: 3502647 bytes, checksum: 19648edcb9982335125316c718b7fe21 (MD5) / Approved for entry into archive by Janete de Oliveira Feitosa (janete.feitosa@fgv.br) on 2017-02-23T20:45:37Z (GMT) No. of bitstreams: 1 Mateo Diaz.pdf: 3502647 bytes, checksum: 19648edcb9982335125316c718b7fe21 (MD5) / Made available in DSpace on 2017-03-03T14:34:25Z (GMT). No. of bitstreams: 1 Mateo Diaz.pdf:...

YULIANA VINA HUMIRA, 傅芳慧

碩士 / 國立臺灣科技大學 / 管理學院MBA / 102 / In the marketing mix context, most of companies only focus on how to survive in the competition by reducing price, inventing a new product innovation, or investing on promotion. These elements are easily to be copied by the competitors. By having a logistic leverage is an essential factor in sustaining competitive advantages to differentiate and achieving company’s goal. Taiwan has the highest density level of convenience stores in the world. With total stores 9,8...

Luong Bao Binh, 梁寶平

碩士 / 美和科技大學 / 經營管理研究所 / 100 / Today, all companies from road transport companies to forwarding companies, airline transport &; post service providers have been using the term “logistics” in order to describe what they are supplying. All companies have concerned much more to make plan for their logistics system. The collaboration between road, railway, seaway and airline transport have been increasing dramatically in globalization economy, especially by new way of Internet. These things have made...

吳慰親

碩士 / 國立彰化師範大學 / 數學系 / 88 / In 1999, R.L. Kraft showed that for λ> 4,the logistic map f_λ(x)=λx(1-x) has a hyperbolic set. In chapter one,we show that there are infinite hyperbolic sets for the logistic map f_4(x)=4x(1-x).By the Sarkovskii theorem, we know that if f_λ has period three points,then f_λ has periods points of all periods. In chapter two, we prove that the birth of period three points for the logistic family f_λ is at λ=1+2*2^(1/2). In chapter three,...

Stephen Hartanto Karjodihardjo, 陳帝奮

碩士 / 國立臺灣科技大學 / 管理學院MBA / 103 / The increasing demand of property brings opportunities for real estate developer to develop a real estate, but also increases the competition. The tightening of competition in Real Estate industry creates the pressure for real estate developers to develop new concepts of business so they can compete and survive within the competitive market. This study examines the business strategies in real estate industry in order to compete with competitors and attract custome...

CIOU,JYUN-YUAN, 邱俊元

碩士 / 國立臺南大學 / 應用數學系碩士班 / 105 / We study exact multiplicity and bifurcation curves of positive solutions for a diffusive logistic problem {█((u''(x)+λ[ru(1-u/q)-u/(1+mu+u^2 )]=0,-1<x<1,@u(-1)=u(1)=0,)┤ where the growth rate function f(u)=ru(1-u/q)-u/(1+mu+u^2 ) , q,r>0, m≥1, and λ > 0 is a bifurcation parameter. Then on the (λ‚‖u‖_∞ )-plane, we study shapes of bifurcation curves, and hence we are able to determine the multiplicity of positive solutions.

Kristjansson, Elizabeth

No description available.

King, Edwin T.

This thesis is an analysis and evaluation of Microcircuit Technology in Logistics Applications. (MITLA/RF) Under the MITLA initiative the Department of Defense (DoD) is testing, evaluating, and developing asset tracking devices to increase readiness and responsiveness while reducing the overall costs of providing logistic support. The underlying goal of the MITLA initiative is to increase readiness through improved asset visibility on a global scale. The primary focus of this thesis is to unders...

Bija, Yanelisa

Magister Philosophiae - MPhil / While several interventions have been implemented over the past decade to combat child mortality, under-five mortality remains a challenge especially in Sub-Saharan Africa. Global-ly, child mortality has decreased to half from 12.7 million in 1990 to 5.9 million per year in 2015. Despite these remarkable gains, more than 16,000 children are dying daily in the world (World Health Organisation, 2015). Previous studies on child survival have examined the contributing...

The purpose of this study was to provide an exposition on multilevel logistic regression. Included in the study was a description of a two-level logistic-model and a comparison between the two-level logistic model and traditional logistic regression. A strategy for building and analyzing multilevel logistic models was devised and offered in the study, and the modeling strategy was illustrated in the analysis of high school drop-outs. The illustration demonstrated the flexibility and utility of t...

Rafael Lirio Arrais

No description available.

Logistic regression is commonly used in epidemiological research because it allows the analyst to adjust for additional covariates when estimating the relationship between an exposure and disease. One type of covariate, known by epidemiologists as a confounder of the exposure-disease relationship, is of particular concern. The effects of covariate adjustment in logistic regression are often assumed to be identical to the effects observed in classical linear regression, but others have suggested ...

Variable selection is an important aspect of modeling. Its aim is to distinguish between the authentic variables which are important in predicting outcome, and the noise variables which possess little to no predictive value. In other words, the goal is to find the variables that (collectively) best explains and predicts changes in the outcome variable. The variable selection problem is exacerbated when correlated variables are included in the covariate set. This dissertation examines the variabl...

Naz, Farah

Purpose The purpose of the study is to identify transport related performance measure within construction logistics in order to evaluate construction logistics solution. The aim is also to verify identified transport performance measures by available empirical data from both cases i.e. Case 1 and Case 2. Methodology This study is exploratory case study with qualitative research method. The research approach of this study is both deductive as well as inductive. Data has been collected from litera...

Goodness-of-fit tests are important to assess how well a model fits a set of observations. Hosmer-Lemeshow (HL) test is a popular and commonly used method to assess the goodness-of-fit for logistic regression. However, there are two issues for using HL test. One of them is that we have to specify the number of partition groups and the different groups often suggest the different decisions. So in this study, we propose several grouping tests to combine multiple HL tests with varying the number of...

Moore, Thomas P.

Ph. D.

Munkhzul, Ninj, 孟和珠拉

碩士 / 義守大學 / 管理學院管理碩博士班 / 101 / In the 21st century, most global companies are trying to improve their operational competitiveness through supply chain management. With the trend of globalization, enterprises are required to extend their logistics scope from domestic to international and integrated logistics networks, and to improve the agility and efficiency of global operations. Latest scientific works has argued that the structure of the supply chains plays an important role in measuring the o...

Ncube, Gugulethu

A research report submitted to the Faculty of Science, School of Statistics and Actuarial Science in partial fulfilment of the requirements for the degree of Master of Science, University of the Witwatersrand. Johannesburg, 08 June 2017. Mathematical Statistics degree, 2017 / Country risk evaluation is a crucial exercise when determining the ability of countries to repay their debts. The global environment is volatile and is filled with macro-economic, financial and political factors tha...

Tian, Shuo, S.M. Massachusetts Institute of Technology

Thesis (S.M.)--Massachusetts Institute of Technology, Computation for Design and Optimization Program, 2010. / Cataloged from PDF version of thesis. / Includes bibliographical references (p. 57-58). / The thesis aims to provide a way to identify better matches between buyers and suppliers who are using an e-procurement platform provided by a US based worldwide online market company. The goal is to enhance the shopping experience of the clients, increase the retention rate and grow the customer b...

Shavdia, Dewang

Includes bibliographical references (leaves 87-89). / Thesis (M. Eng.)--Harvard-MIT Division of Health Sciences and Technology, 2007. / (cont.) The EWS models were then tested in a forward, casual manner on a random cohort of 500 ICU patients to mimic the patients' stay in the unit. The model with the highest performance achieved a sensitivity of 0.85 and a positive predictive value (PPV) of 0.70. Of the 35 episodes of hypotension despite fluid resuscitation present in the random patient dataset...

Handley, Katie

Master of Science / Department of Biological & Agricultural Engineering / Stacy L. Hutchinson / Gully erosion is a serious problem on military training lands resulting in not only soil erosion and environmental degradation, but also increased soldier injuries and equipment damage. Assessment of gully erosion occurring on Fort Riley was conducted in order to evaluate different gully location methods and to develop a gully prediction model based on logistic regression. Of the 360 sites visited, fi...

Joubert, Georgina

Bibliography: pages 121-126. / In this thesis, the various methods of variable selection which have been proposed in the statistical, epidemiological and medical literature for prediction and estimation problems in logistic regression will be described. The procedures will be applied to medical data sets. On the basis of the literature review as well as the applications to examples, strengths and weaknesses of the approaches will be identified. The procedures will be compared on the basis of the...

Pauw, Jeanette

Therapeutic horseback riding (THR) uses the horse as a therapeutic apparatus in physical and psychological therapy. This dissertation suggests a more appropriate technique for measuring the effect of THR. A research survey of the statistical methods used to determine the effect of THR was undertaken. Although researchers observed clinically meaningful change in several of the studies, this was not supported by statistical tests. A logistic regression approach is proposed as a solution to ma...

Louw, Nelmarie

Thesis (PhD)--Stellenbosch University, 1997. / One copy microfiche. / ENGLISH ABSTRACT: Discriminani analysis and logistic regression are techniques that can be used to classify entities of unknown origin into one of a number of groups. However, the underlying models and assumptions for application of the two techniques differ. In this study, the two techniques are compared with respect to classification of entities. Firstly, the two techniques were compared in situations where no data depe...

Vu, Felix, Rahic, Melanie

In connection to the increasing awareness of vehicles and its impact on the environment, the interest in the electric vehicle market has shown a significant growth in the recent years. According to forecasts, it is also projected to increase further in the future. These electric vehicles are driven by lithium-ion batteries with an expected service life of 5-15 years depending on different technology generations and design concepts. After the given service life, the battery has lost approximately...