Rozprawy doktorskie na temat „Logistic networks”
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Pearce, Kim Frances. "Robust logistic discrimination". Thesis, University of Newcastle Upon Tyne, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.294687.
Pełny tekst źródłaBattini, Daria. "Dynamic modeling of networks and logistic complex systems". Doctoral thesis, Università degli studi di Padova, 2008. http://hdl.handle.net/11577/3426267.
Pełny tekst źródłaRUSICH, ANDREA. "Collaborative Logistics Networks". Doctoral thesis, Università degli Studi di Trieste, 2017. http://hdl.handle.net/11368/2908186.
Pełny tekst źródłaJaved, Kamran. "ZigBee suitability for Wireless Sensor Networks in Logistic Telemetry Applications". Thesis, Halmstad University, School of Information Science, Computer and Electrical Engineering (IDE), 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-254.
Pełny tekst źródłaThere 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 802.15.4 Standard [2]. ZigBee is a new technology as compared to the other
wireless technologies such as Bluetooth, but it has certain characteristics such as low cost, low
power, support for mesh networking e.t.c which makes its chances to be more successful than
others.
The other aim of this thesis is to examine different issues related to ZigBee to see its fitness for
logistic telemetry applications like multi-hop routing issues, routing strategies and design
requirements. ZigBee is relatively new wireless technology, so there are great deals of promises
associated with it. In this thesis, a comparison between ZigBee and Bluetooth technologies will
also be made.
VENKATARAMAN, AARTI. "COMPARISON OF NEURAL NETWORK AND LOGISTIC REGRESSION MODELS TO PREDICT MEDICAL OUTCOME". University of Cincinnati / OhioLINK, 2004. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1097000476.
Pełny tekst źródłaBranski, Regina Meyer. "O papel da Tecnologia da Informação no processo logístico: estudo de casos com operadores logísticos". Universidade de São Paulo, 2008. http://www.teses.usp.br/teses/disponiveis/3/3136/tde-01102008-144646/.
Pełny tekst źródłaThe logistics concept has been changing, adding new elements and becoming more complex. In the fifties it was restricted to physical distribution only. Nowadays, it embraces the total flow of materials, products and information between the different companies of a supply chain. In this new scenario, organizations in all industries have outsourced their logistics operations to specialized companies called logistics operators. Information technologies (IT) have an important role in the development of logistics activities and in the logistics operator\'s performance: IT applications allow an optimal tuning of the logistics system and an integrated management of its several components. The purpose of this research is to investigate how the logistics operators are applying IT in the logistics process and how IT is contributing to the establishment of value networks. The methodology utilized was the multiple cases study. Five logistic operators that feature different strategic positions and operate with different industries in the Brazilian market were investigated. The sample was chosen so as to provide the information needed for an analysis of all stages of the logistic process. The results of the research indicate that customized applications, suited to the particularities of each operator, play an important role in the creation of competitive advantages, and suggest the centrality of IT in the creation of value networks.
Yuzbasioglu, Asim. "An empirical analysis of takeover predictions in the UK : application of artificial neural networks and logistic regression". Thesis, University of Plymouth, 2002. http://hdl.handle.net/10026.1/2219.
Pełny tekst źródłaStrandberg, Rickard, i Johan Låås. "A comparison between Neural networks, Lasso regularized Logistic regression, and Gradient boosted trees in modeling binary sales". Thesis, KTH, Optimeringslära och systemteori, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-252556.
Pełny tekst źródłaDet primära syftet med denna uppsats är att förutsäga huruvida en kund kommer köpa en specifik produkt eller ej. Den historiska datan tillhandahålls av den Nordiska internet-baserade IT-försäljaren Dustin. Det sekundära syftet med uppsatsen är att evaluera hur väl ett djupt neuralt nätverk presterar jämfört med Lasso regulariserad logistisk regression och gradient boostade träd (GXBoost). Denna uppsats fann att XGBoost presterade bättre än de två andra metoderna i såväl träffsäkerhet, som i hastighet.
Fajkus, Petr. "Návrh logistické strategie v rámci obchodních řetězců". Master's thesis, Vysoké učení technické v Brně. Fakulta podnikatelská, 2008. http://www.nusl.cz/ntk/nusl-221981.
Pełny tekst źródłaDoig, Gordon S. "Severity of illness scoring in the intensive care unit, a comparison of logistic regression and artificial neural networks". Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape8/PQDD_0014/NQ42512.pdf.
Pełny tekst źródłaAhmad, Abd-Razak. "Modelling corporate failure with financial and 'event' information : an empirical study using logistic regression and artificial neural networks". Thesis, University of Leeds, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.422086.
Pełny tekst źródłaOtten, Sonja [Verfasser], i Hans [Akademischer Betreuer] Daduna. "Integrated Models for Performance Analysis and Optimization of Queueing-Inventory-Systems in Logistic Networks / Sonja Otten ; Betreuer: Hans Daduna". Hamburg : Staats- und Universitätsbibliothek Hamburg, 2018. http://d-nb.info/1158899947/34.
Pełny tekst źródłaYang, Jidong. "Road crack condition performance modeling using recurrent Markov chains and artificial neural networks". [Tampa, Fla.] : University of South Florida, 2004. http://purl.fcla.edu/fcla/etd/SFE0000567.
Pełny tekst źródłaPike, Adam Clellon. "ASSESSMENT OF TERRAIN ATTRIBUTE MODELS FOR THE IDENTIFICATION OF EROSION PRONE AREAS SUITABLE FOR THE ESTABLISHMENT OF GRASSED WATERWAYS IN AN AGRICULTURAL FIELD SETTING IN THE OUT BLUEGRASS REGION OF KENTUCKY". UKnowledge, 2008. http://uknowledge.uky.edu/gradschool_theses/544.
Pełny tekst źródłaJiang, Wenxuan. "A Diagnostic Tool for the Causes of Packet Corruption in Wireless Sensor Networks". Thesis, Mittuniversitetet, Avdelningen för informations- och kommunikationssystem, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:miun:diva-26268.
Pełny tekst źródłaTvaroh, Tomáš. "Využití metod data miningu při analýze kreditních dat". Master's thesis, Vysoká škola ekonomická v Praze, 2013. http://www.nusl.cz/ntk/nusl-200207.
Pełny tekst źródłaSibanda, Wilbert. "Comparative study of neural networks and design of experiments to the classification of HIV status / Wilbert Sibanda". Thesis, North West University, 2013. http://hdl.handle.net/10394/13179.
Pełny tekst źródłaFang, Wei-Ta. "A landscape approach to reserving farm ponds for wintering bird refuges in Taoyuan, Taiwan". Texas A&M University, 2003. http://hdl.handle.net/1969.1/3984.
Pełny tekst źródłaBergtold, Jason Scott. "Advances in Applied Econometrics: Binary Discrete Choice Models, Artificial Neural Networks, and Asymmetries in the FAST Multistage Demand System". Diss., Virginia Tech, 2004. http://hdl.handle.net/10919/27266.
Pełny tekst źródłaPh. D.
Bartes, Lukáš. "Studie logistické koncepce v podniku". Master's thesis, Vysoké učení technické v Brně. Fakulta podnikatelská, 2007. http://www.nusl.cz/ntk/nusl-221490.
Pełny tekst źródłaLim, Ji-Hyun. "A computational approach to discovering p53 binding sites in the human genome". Thesis, University of St Andrews, 2013. http://hdl.handle.net/10023/3388.
Pełny tekst źródłaHani, Mouhoub. "La coopétition réticulaire globale : Nouvelle structure d'interaction dynamique entre concurrents en vue de l'innovation". Thesis, Paris Est, 2015. http://www.theses.fr/2015PESC0057.
Pełny tekst źródłaThe main objective of this research is to explore a new form of dynamic interaction between competitors that are embedded in complex structures such as networks. It is about global network coopetition which refers to the simultaneous cooperation and competition between global actors networks belonging to different industries. Current research on coopetition has largely focused on the organizational, dyadic or industrial aspect. However, the reticular level is scarcely explored which aroused the interest of this research idea that includes it with a global perspective. Indeed, based on a longitudinal multi-sectorial study with panel data collected from various sources, a non-linear regression through ordered multivariate logistic model was first used to test hypotheses on network coopetition drivers. Then, a Poisson regression was used to measure the effect of network coopetition forms on innovation. The main results highlight organizational, dyadic, industrial and reticular drivers that lead to the emergence of reticular coopetition under four forms, namely, intra-network coopetition, inter-network coopetition, global coopetition and networks coopetition. Furthermore, results show that these forms influence differently firms’ innovation. On one hand, this research allows drawing scientific community attention to consider the reticular level in inter-firm relationships analysis. On the other hand, it helps managers to deal with the global environment uncertainty and its innovation accelerated pace
Wang, Yating. "Trust-Based Service Management for Service-Oriented Mobile Ad Hoc Networks and Its Application to Service Composition and Task Assignment with Multi-Objective Optimization Goals". Diss., Virginia Tech, 2016. http://hdl.handle.net/10919/70965.
Pełny tekst źródłaPh. D.
Ho, Koki. "Dynamic network modeling for spaceflight logistics with time-expanded networks". Thesis, Massachusetts Institute of Technology, 2015. http://hdl.handle.net/1721.1/98557.
Pełny tekst źródłaThis electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.
Cataloged from student-submitted PDF version of thesis.
Includes bibliographical references (pages 139-145).
This research develops a dynamic logistics network formulation for high-level lifecycle optimization of space mission sequences in order to find an optimal space transportation architecture considering its technology trades over time. The proposed methodology is inspired by terrestrial logistics analysis techniques based on linear programming network optimization. A new model with a generalized multi-commodity network flow formulation and a time-expanded network is developed for dynamic space logistics optimization. The developed methodology is applied to three case studies: 1) human exploration of Mars; 2) human exploration of a near-Earth object (NEO); 3) their combination (related to the concept of the Flexible Path). The results reveal multiple dynamic system-level trades over time and provide recommendations for an optimal strategy for human space exploration architecture. The considered trades include those between in-situ resource utilization (ISRU) and propulsion technologies as well as orbit and depot location selection over time. The numerical results show that using specific combinations of propulsion technologies, ISRU, and other space infrastructure elements effectively, we can reduce the initial mass in low- Earth orbit (IMLEO) by 45-50% compared with the baseline architecture. In addition, the analysis results also show that we can achieve 15-20% IMLEO reduction by designing Mars and NEO missions together as a campaign compared with designing them separately owing to their common space logistics infrastructure pre-deployment. This research serves as a precursor for eventual permanent settlement and colonization of other planets by humans, thus transforming us into a multi-planet species.
by Koki Ho.
Ph. D.
Karcher, Cristiane. "Redes Bayesianas aplicadas à análise do risco de crédito". Universidade de São Paulo, 2009. http://www.teses.usp.br/teses/disponiveis/3/3142/tde-25052009-162507/.
Pełny tekst źródłaCredit Scoring Models are used to estimate the insolvency probability of a customer, in a period, based on their personal and financial information. In this text, the proposed model for Credit Scoring is Bayesian Networks (BN) and its results were compared to Logistic Regression. The BN evaluated were the Bayesian Networks Classifiers, with structures of type: Naive Bayes, Tree Augmented Naive Bayes (TAN) and General Bayesian Network (GBN). The RB structures were developed using a Structure Learning technique from a real database. The models performance were evaluated and compared through the hit rates observed in Confusion Matrix, Kolmogorov-Smirnov statistic and Gini coefficient. The development and validation samples were obtained using a Cross-Validation criteria with 10-fold. The analysis showed that the fitted BN models have the same performance as the Logistic Regression Models, evaluating the Kolmogorov-Smirnov statistic and Gini coefficient. The TAN Classifier was selected as the best BN model, because it performed better in prediction of bad customers and allowed an interaction effects analysis between variables.
Selau, Lisiane Priscila Roldão. "Construção de modelos de previsão de risco de crédito". reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2008. http://hdl.handle.net/10183/12572.
Pełny tekst źródłaThis work presents a methodology for credit risk prediction, comparing the performance of three statistical techniques used in the prediction process: discriminant analysis, logistic regression and neural networks. The proposed method (entitled PRC Model) embraces six steps: (i) population definition, (ii) sampling, (iii) preliminary analysis, (iv) model development, (v) model selection and (vi) implementation steps. The PRC Model was applied to a sample of 17,005 customers from an organization, which manages his own credit system and controls a pool of drugstores. The results show the superiority of neural networks over the other two techniques. This was expected due to the non-linear approach of the neural network when dealing with the explanatory variables. Considering the neural network model and the annual sales due to customers included on this study, the use of the proposed methodology indicates a 65% potential profits.
Singh, Gurpreet. "Statistical Modeling of Dynamic Risk in Security Systems". Thesis, KTH, Matematisk statistik, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-273599.
Pełny tekst źródłaBig data har använts regelbundet inom ekonomi för att bygga prognosmodeller, det är dock ett relativt nytt koncept inom säkerhetsbranschen. Denna studie förutsäger vilka larmkoder som kommer att låta under de kommande 7 dagarna på plats $L$ genom att observera de senaste 7 dagarna. Logistisk regression och neurala nätverk används för att lösa detta problem. Eftersom att problemet är av en multi-label natur tillämpas logistisk regression i kombination med binary relevance och classifier chains. Modellerna tränas på data som har annoterats med två separata metoder. Den första metoden annoterar datan genom att endast observera plats $L$ och den andra metoden betraktar $L$ och $L$:s omgivning. Eftersom problemet är multi-labeled kommer annoteringen sannolikt att vara obalanserad och därför används resamplings metoden, SMOTE, och random over-sampling för att öka frekvensen av minority labels. Recall, precision och F1-score mättes för att utvärdera modellerna. Resultaten visar att den andra annoterings metoden presterade bättre för alla modeller och att classifier chains och binary relevance presterade likartat. Binary relevance och classifier chains modellerna som tränades på datan som använts sig av resamplings metoden SMOTE gav ett högre macro average F1-score, dock sjönk prestationen för neurala nätverk. Resamplings metoden SMOTE presterade även bättre än random over-sampling. Neurala nätverksmodellen överträffade de andra två modellerna på alla metoder och uppnådde högsta F1-score.
Králová, Veronika. "Logistika obchodních řetězců". Master's thesis, Vysoká škola ekonomická v Praze, 2010. http://www.nusl.cz/ntk/nusl-75120.
Pełny tekst źródłaHamšík, Filip. "Vizualizace modelování rizik v logistice". Master's thesis, Vysoké učení technické v Brně. Ústav soudního inženýrství, 2016. http://www.nusl.cz/ntk/nusl-241298.
Pełny tekst źródłaJunior, Francisco Henrique Figueiredo de Castro. "Previsão de insolvência de empresas brasileiras usando análise discriminante, regressão logística e redes neurais". Universidade de São Paulo, 2003. http://www.teses.usp.br/teses/disponiveis/12/12139/tde-16092004-121634/.
Pełny tekst źródłaResearches in bankruptcy prediction of companies that make use of modern statistics techniques are being held since the 1960s. This branch of study, which initially employed univariate techniques, and then assimilated the multivariate techniques today uses artificial intelligence, a techniques that needs a great computational processing capability. This evolution brought continuing improvements to the results achieved and today is possible to say that financial statements when properly analyzed are a good source of information to the prediction of financial distress. This research aimed mainly the development of prediction models using Discriminant Analysis, Logistic Regression and Artificial Neural Networks so that they could be compared in terms of predictive capabilities. The sample consisted of 40 firms divided in 2 groups (bankrupt and non bankrupt companies) according to the Brazilian bankruptcy law. The 16 initial predictors were selected to enter the model according to the best subsets procedure in order than the stepwise procedure. Special attention was taken to accomplish the pre-requisites of the techniques, above all the Discriminant Analysis, like normality and lack of multicollinearity of the independent variables. The findings of the predictions were reasonable and according to what was expected: the Discriminant Analysis was outperformed by the Logistic Regression that was also outperformed by the Artificial Neural Networks.
Boschian, Valentina. "Models and Methods for Multi-Actor Systems". Doctoral thesis, Università degli studi di Trieste, 2012. http://hdl.handle.net/10077/7431.
Pełny tekst źródłaThe study of the models and methods to apply to multi-actor systems is a widely discussed research topic in the related scientific literature. The multi-actor systems are defined as systems that are characterized by the presence of several autonomous elements, of different decision makers and of complex rules that allow the communication, the coordination and the connection of the components of such systems. Commonly, the study of Multi-Actor System, MAS, recalls the well-known issues concerning the multi-agent systems. The research topic related to the multi-agent system firstly started to appear in scientific literature in 1980s, mainly in relation to the computer science and artificial intelligence. In this dissertation, in particular, the study of the multi-agent systems, and specifically of the multi-actor systems, is taken into account merely in relation to the distinctive features of complexity that characterize such systems and not to the issues concerning the agent-oriented software engineering. Therefore, the research results presented in this thesis are focused on the development and on the realization of innovative models and methodologies to face the management and the decision making mechanisms applied to complex multi-actor systems. This dissertation especially focuses on two different examples of multi-actor systems in two very diverse perspectives. The former deals with the research problem related to intermodal transportation networks, while the latter with the so called consensus problem in distributed networks of agents. Concerning the research problem related to the intermodal logistic systems, the research activity addresses the management of their more and more increasing complexity by the applications of the modern Information and Communication Technologies (ICT) tools that are key solutions to achieve the efficiency and to enhance logistics competitiveness. The related scientific literature still seems lacking in addressing with adequate attention the impact of these new techniques on the management of these complex systems and, moreover, there is an apparent lack of a systematic and general methodology to describe in detail the multiplicity of elements that can influence the dynamics and the corresponding information and decision making structure of intermodal transportation systems. The innovative results presented in this dissertation are focused on the development of an Integrated System, IS, devoted to manage intermodal transportation networks at the tactical as well as operational decision level to be used by decision makers both in off-line planning and real time management. To specify the Integrated System, a reference model is developed relying on a top-down metamodeling procedure. These innovative research results are a contribution to bridge the gap and to propose not only a systematic modeling approach devoted to describe a generic multi-actor logistic system, but also a management technique based on a closed loop strategy. The second example of application is focused on a topic that is widely discussed in scientific literature related to the study of the multi-actor collective behaviors in a distributed network. The interaction protocols that allow the agents to reach the convergence to a common value is called consensus or agreement problem. This research problem is particularly studied in the context of cooperative control of multi-agent systems because the agents are autonomous, independent and have to interact in a distributed network. The presented research results address the investigation of new and fast alignment protocols that enhance the performances of the standard iteration protocols for particular topologies of digraphs on the basis of a triangular splitting of the standard iteration matrix. The examined examples, the models and the methodologies applied to analyze them, are very different in the two cases and this testifies the large extent of research problems related to the multi-actor systems.
L’analisi di modelli e metodi da sviluppare e da applicare nel contesto dei sistemi multi-attoriali costituisce un tema molto variegato e discusso nella letteratura scientifica internazionale. I sistemi multi-attoriali sono sistemi che si contraddistinguono per la presenza di molti elementi autonomi diversi tra loro, di molteplici decisori e di complesse regole che determinano la comunicazione, il coordinamento e la connessione all'interno di tali sistemi. Frequentemente, facendo riferimento a sistemi multi-attoriali, Multi-Actor Systems, si richiama il tema molto attuale dei sistemi multi agente, Multi-Agent Systems. Diffusisi a partire dal 1980, i sistemi multi agente sono spesso studiati in relazione alle metodologie di sviluppo dell'ingegneria del software. Nel presente lavoro di tesi, il tema dei sistemi multi-agente, ed in particolare di quelli multi-attoriali, non viene analizzato in questo contesto, ma in relazione alle tecniche decisionali da adottare per gestire sistemi caratterizzati da un alto livello di complessità. In tale ambito, i risultati presentati all'interno di questa dissertazione sono focalizzati sullo sviluppo e sulla realizzazione di nuovi metodi e di nuove metodologie, in grado di affrontare la gestione della complessità dei sistemi multi-attoriali. Vengono in particolare esaminate due diverse problematiche, in due contesti completamente diversi e con tecniche differenti, a testimoniare le vaste applicazioni che riguardano i sistemi multi-attoriali. I problemi analizzati sono incentrati, in primo luogo, su un'applicazione inerente la gestione di sistemi logistici intermodali ed, in secondo luogo, sullo studio delle regole o protocolli di interazione in una rete distribuita di agenti autonomi. Per quanto riguarda l'aspetto legato ai sistemi intermodali di trasporto, un tema molto discusso nella letteratura scientifica recente, l'analisi si focalizza sulla gestione della loro sempre crescente complessità, tramite l'utilizzo di sistemi dell'Information and Communication Technology, ICT. Questi strumenti richiedono metodi e modelli che sono innovativi rispetto a quanto è presente nella letteratura scientifica, all'interno della quale è stata riscontrata la mancanza di un approccio sistematico e sufficientemente ad alto livello per la realizzazione di una metodologia in grado di descrivere allo stesso tempo sia la molteplicità di elementi che influenzano le dinamiche e le informazioni, sia le strutture decisionali dei sistemi intermodali. L'innovazione dei risultati presentati in questa tesi si focalizza proprio sull'esigenza di proporre un sistema integrato, Integrated System (IS), basato su un metamodello delle reti intermodali di trasporto, che fornisca un valido supporto ai decisori sia a livello tattico che operativo. Il secondo aspetto affrontato in questa tesi riguarda un altro argomento di largo ed attuale interesse nella letteratura scientifica, che viene comunemente chiamato problema del consenso. Questo problema affronta lo studio di come diversi agenti autonomi collocati su una rete distribuita siano in grado di comunicare e di accordarsi su un valore comune, senza la presenza di un decisore centrale. A questo scopo ci sono degli algoritmi che specificano le regole o protocolli di interazione tra i diversi agenti. In tale contesto, i risultati proposti si focalizzano su alcune problematiche rappresentate dal protocollo classico del consenso e soprattutto sulla sua scarsa efficienza in particolari conformazioni delle reti di agenti. Il lavoro di tesi propone, quindi, un approccio di suddivisione, splitting, della matrice standard di iterazione, di tipo triangolare, che presenta notevoli vantaggi in termini di performance rispetto all'algoritmo classico. Lo studio di problemi multi-attoriali, pertanto, richiede lo sviluppo di innovative metodologie decisionali e di nuovi metodi di gestione delle comunicazioni, per rispondere al livello sempre crescente di complessità, offrendo in questo modo alcuni spunti molto interessanti per la ricerca.
XXIV Ciclo
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Phadke, Amit Ashok. "Predicting open-source software quality using statistical and machine learning techniques". Master's thesis, Mississippi State : Mississippi State University, 2004. http://library.msstate.edu/etd/show.asp?etd=etd-11092004-105801.
Pełny tekst źródłaYang, Kaolee. "A Statistical Analysis of Medical Data for Breast Cancer and Chronic Kidney Disease". Bowling Green State University / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1587052897029939.
Pełny tekst źródłaBitala, Libor. "Návrh optimalizace logistiky internetového obchodu". Master's thesis, Vysoké učení technické v Brně. Fakulta podnikatelská, 2014. http://www.nusl.cz/ntk/nusl-224349.
Pełny tekst źródłaMaria, Öberg. "Governance for sustainable development of major European transport corridors : The Scandinavian-Mediterranean TEN-T core network corridor". Doctoral thesis, Luleå tekniska universitet, Arkitektur och vatten, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-65579.
Pełny tekst źródłaDella, Puppa Marco. "I driver del Global logistics network design nel legame economia, trasporti e logistica - aspetti teorici e casi applicativi". Doctoral thesis, Università degli studi di Trieste, 2011. http://hdl.handle.net/10077/6001.
Pełny tekst źródłaLa tesi di dottorato si sviluppa avendo come punto di partenza un filone secondo il quale la ricerca scientifica nelle discipline del logistics management e dell’economia spaziale procede autonomamente facendo si che i due ambiti di ricerca risultano essere slegati pur essendovi alcuni elementi che li accomunano; per questo motivo viene proposta una agenda di ricerca finalizzata all’integrazione delle due al fine di creare un nuovo sistema di supporto alle decisioni per le politiche logistico/trasportistiche in capo al pianificatore pubblico. Più in particolare è posto l’accento principalmente su due specifici problemi di ricerca aperti dei quali il primo può essere considerato funzionale al secondo. In quest’ottica se il primo è volto all’ulteriore approfondimento dei principali driver firm level che stanno alla base delle configurazioni oggi assunte dalle reti logistiche globali (global logistics network design), l’altro filone è finalizzato allo sviluppo di nuovi modelli interpretativi dei legami tra la logistica in un’ottica aggregata (che supera quindi la visione puramente micro a favore dei livelli meta e macro) e l'economia regionale/spaziale. In altre parole essendo il logistics management focalizzato sulle dinamiche dell’impresa, la sfida proposta consiste nel capire ancora meglio le dinamiche logistico-trasportistiche micro indotte dai recenti fenomeni di globalizzazione in modo da poter elaborare, in step successivi, modelli logistici aggregati (meta e macro appunto, quali possono essere ad esempio quelli distrettuale/locale e regionale) che possano essere utili a meglio comprendere quale è il ruolo della logistica (e del logistics network design più precisamente), come evoluzione del trasporto, nell’ambito delle relazioni economiche a livello spaziale e quindi nella spatial economics. La tesi si è inserita all'interno del primo dei due ambiti di ricerca individuati, ossia quello finalizzato all'ulteriore approfondimento delle tematiche attinenti i trasporti e la logistica facendo particolare riferimento ai driver, cioè alle forze che determinano l'evoluzone globale della logistica, nonchè ai connessi aspetti decisionali e comportamentali che stanno alla base delle attuali configurazioni di logistics network design. Più in particolare obiettivo specifico della tesi è verificare, attraverso l'analisi di una serie di casi studio, quali sono i driver sottostanti i processi decisionali e comportamentali che hanno portano al (ri)disegno dei network logistici considerati. Dal punto di vista metodologico il lavoro si articola in quattro parti. Nella prima parte, muovendo da un’analisi della letteratura scientifica, sarà preso in esame il legame trasporti, logistica ed economia ed esplicitato perchè è opportuno progredire nella sua conoscenza sia a fini positivi che normativi. Per quanto riguarda la finalità positiva di approfondimento della conoscenza del legame, partendo dalla disamina di ciò che accomuna i trasporti e la logistica (come evoluzione del trasporto) con l'economia regionale/spaziale, sono analizzati i processi di evoluzione dei trasporti con particolare riferimento all'evoluzione del concetto di "costo del trasporto" ed esplicitati i punti di vista (gli approcci) dai quali il legame può essere analizzato. In relazione alla seconda, quella normativa, si va invece a verificare come una più approfondita conoscenza del legame economia-trasporti-logistica oltre alla finalità di arricchimento scientifico ha anche un risvolto normativo, ossia si configura quale elemento utile ai soggetti chiamati a pianificare le reti logistico-trasportistiche a livello territoriale. Nella seconda parte ci si concentra a livello micro e si entra nella c.d. black box della logistica prendendo in esame la letteratura sul logistics management. Più in particolare si va a vedere quali sono le principali problematiche logistico-trasportistiche generate dai recenti fenomeni di globalizzazione dell'economia, quali sono le forze (i driver) alla base dell'attuale evoluzione globale della logistica e più specificamente della (ri)configurazione globale dei network logistici. Nella terza parte del lavoro, ricorrendo ad un framework analitico che si basa su pecifiche metodologie proposte dal logistics management, vengono analizzati una serie di case study appartenenti sia al versante domanda che a quello dell'offerta logistico-trasportistica. Il framework applicato si sviluppa attorno due “sotto-metodologie” complementari che intendono descrivere i casi ponendosi in una prospettiva che abbraccia tanto le strategie e le soluzioni adottate in passato quanto quelle attuali in modo da evidenziare i processi di evoluzione delle configurazioni di network design implementate in risposta ai driver evolutivi. Più nello specifico la prima delle due “sotto-metodologie” si concretizza in uno schema di analisi dei processi e delle attività logistiche finalizzata alla ricostruzione della catena logistico-produttiva/supply chain nelle sue diverse componenti approvvigionamento, produzione e distribuzione; la seconda è invece finalizzata ad identificare le strategie, i modelli operativi e le pratiche operative (logistico-trasportistiche) contestualizzate rispetto l’ambiente in cui le imprese sono calate. Le evidenze emerse nella terza parte sono oggetto di elaborazione all'interno della quarta, quella il cui obiettivo (che è anche obiettivo della tesi) è fornire un contributo alla comprensione delle forze (cioè dei driver) che hanno determinato i processi di (ri)disegno delle reti logistiche globali. In altre parole ciò che si vuole ottenere è una maggiore chiarezza di quali sono i motivi che, in chiave del mantenimento o dell'accrescimento della competitività globale, hanno indotto una serie di imprese ad intraprendere dei percorsi di (ri)disegno delle proprie reti logistico-trasportistiche e di capire altresì quali sono le soluzioni logistico-trasportistiche concretamente implementate in risposta a tali forze.
XXII Ciclo
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Hieber, Ralf. "Supporting transcorporate logistics by collaborative performance measurement in industrial logistics networks /". Zürich, 2001. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=14364.
Pełny tekst źródłaBürckel, Jannik, i Tobias Schreckenbach. "Actors in innovative City Logistics Networks : Individual Actors jointly forming City Logistics Networks and their Contribution towards Innovation". Thesis, Högskolan i Jönköping, Internationella Handelshögskolan, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-44045.
Pełny tekst źródłaSong, Haiqing. "Dynamic flow management problems in logistics networks /". View abstract or full-text, 2005. http://library.ust.hk/cgi/db/thesis.pl?IEEM%202005%20SONG.
Pełny tekst źródłaJuntunen, J. (Jouni). "Logistics outsourcing for economies in business networks". Doctoral thesis, University of Oulu, 2010. http://urn.fi/urn:isbn:9789514262241.
Pełny tekst źródłaTadaros, Marduch. "Reverse Logistics for Lithium-ion Batteries : A study on BPEVs in Sweden". Thesis, Luleå tekniska universitet, Institutionen för ekonomi, teknik och samhälle, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-74371.
Pełny tekst źródłaGonçalves, Eric Bacconi. "Análise de risco de crédito com o uso de modelos de regressão logística, redes neurais e algoritmos genéticos". Universidade de São Paulo, 2005. http://www.teses.usp.br/teses/disponiveis/12/12139/tde-09042008-144032/.
Pełny tekst źródłaMost of the large Brazilian institutions which work with credit concession use credit models to evaluate the risk of consumer loans. Any improvement in techniques that results in the precision increase of a prediction model, will provide financial gains to the institution. The first phase of this study introduces concepts of credit and risk. Subsequently, with a sample set of applicants from a large Brazilian financial institution, three credit scoring models are built applying three different techniques: Logistic Regression, Neural Networks and Genetic Algorithms. Finally, the quality and the performance of these models are evaluated and compared, and the best one is identified. The results obtained by the logistic regression model and neural network model are good and very similar, but the first one is slightly better. The results obtained with the genetic algorithm model are also good, but a little bit inferior. This study shows proceedings to be adopted by a financial institution in order to identify the best credit model to evaluate the risk of consumer loans. The use of the proper model will help the definition of an adequate business strategy and increase profits.
Chaudhari, Gaurav Singh. "Information Network Design for Lean Logistics". Diss., Virginia Tech, 2008. http://hdl.handle.net/10919/29677.
Pełny tekst źródłaPh. D.
Mendonça, Tiago Silva. "Modelos de regressão logística clássica, Bayesiana e redes neurais para Credit Scoring". Universidade Federal de São Carlos, 2008. https://repositorio.ufscar.br/handle/ufscar/4535.
Pełny tekst źródłaImportant advances have been achieved in the granting of credit, however, the problem of identifying good customers for the granting of credit does not provide a definitive solution. Several techniques were presented and are being developed, each presents its characteristics, advantages and disadvantages as to their discrimination power, robustness, ease of implementation and possibility of interpretation. This work presents three techniques for the classification of defaults in models of Credit Score, Classical Logistic Regression, Bayesian Logistic Regression with no prior information and Artificial Neural Networks with a few different architectures. The main objective of the study is to compare the performance of these techniques in the identification of customers default. For this, four metrics were used for comparison of models: predictive capacity, ROC Curve, Statistics of Kolmogorov Smirnov and capacity of hit models. Two data bases were used, an artificial bank and a real bank. The database was constructed artificially based on an article by Breiman that generates the explanatory variables from a multivariate normal distribution and the actual database used is a problem with Credit Score of a financial institution that operates in the retail Brazilian market more than twenty years.
Importantes avanços vêm sendo conquistados na área de concessão de crédito, não obstante, o problema de identificação de bons clientes para a concessão de crédito não apresenta uma solução definitiva. Diversas técnicas foram apresentadas e vêm sendo desenvolvidas, cada uma apresenta suas características, com vantagens e desvantagens no tocante ao seu poder de discriminação, robustez, facilidade de implementação e possibilidade de interpretação. Este trabalho apresenta três técnicas para a classificação de inadimplência em modelos de Credit Score, Regressão Logística Clássica, Regressão Logística Bayesiana com priori não informativa e Redes Neurais Artificiais com algumas diferentes arquiteturas. O objetivo principal do trabalho é comparar o desempenho destas técnicas na identificação de clientes inadimplentes. Para isto, Foram utilizadas quatro métricas para a comparação dos modelos: Capacidade Preditiva, Curva ROC, Estatística de Kolmogorov Smirnov e a Capacidade de Acerto dos modelos. Dois bancos de dados foram utilizados, um banco artificial e um banco real. O banco de dados artificial foi construído baseado em um artigo de Breiman que gera as variáveis explicativas a partir de uma distribuição normal multivariada e o banco de dados real utilizado trata-se de um problema de Credit Score de uma instituição financeira que atua no mercado varejista brasileiro há mais de vinte anos.
Hedar, Sara. "Applying Machine Learning Methods to Predict the Outcome of Shots in Football". Thesis, Uppsala universitet, Avdelningen för systemteknik, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-414774.
Pełny tekst źródłaDvořáková, Iva. "Dopravní síť Pardubic, srovnání s Hradcem Králové". Master's thesis, Vysoká škola ekonomická v Praze, 2009. http://www.nusl.cz/ntk/nusl-17046.
Pełny tekst źródłaCui, Lianguang. "Innovation and network development of logistics firms". Doctoral thesis, Internationella Handelshögskolan, Högskolan i Jönköping, IHH, Marketing and Logistics, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-31955.
Pełny tekst źródłaSonnert, Adrian. "Predicting inter-frequency measurements in an LTE network using supervised machine learning : a comparative study of learning algorithms and data processing techniques". Thesis, Linköpings universitet, Institutionen för datavetenskap, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-148553.
Pełny tekst źródłaMuralidharan, Rohit. "The Impact of E-Commerce on Parcel Shipping Operators in The EU and The US". Thesis, Linköpings universitet, Kommunikations- och transportsystem, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-146272.
Pełny tekst źródłaIscanoglu, Aysegul. "Credit Scoring Methods And Accuracy Ratio". Master's thesis, METU, 2005. http://etd.lib.metu.edu.tr/upload/12606502/index.pdf.
Pełny tekst źródła