Teses / dissertações sobre o tema "Cross-chain"
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Andersson, Carl-Johan. "Evaluating Cross-chain Settlement and Exchange in Cryptocurrency". Thesis, Umeå universitet, Institutionen för datavetenskap, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-165163.
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While Bitcoin is beginning to cement it's core protocol and principles, the related technologies around it, such as atomic swaps and lightning network could still be considered to be in an infant state when it comes to understanding and development. In this thesis you will find atomic swaps being evaluated in depth, both off-chain and on-chain together with reasoned and somewhat wel ldefined standards and protocols on how atomic swaps should be performed in the future.
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Pillai, Babu R. "Design of Blockchain Interoperability Modes through Cross-chain Integration". Thesis, Griffith University, 2022. http://hdl.handle.net/10072/418796.
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Blockchain has become important in business strategy and in technological discussions in industry, academia and government. Irrespective of differing views and beliefs about cryptocurrency, it has triggered significant interest and investment in research in the blockchain space. Enterprise-grade blockchains are being developed to meet specific business requirements. However, the limitations of scalability and interoperability remain design challenges. Technically, interoperability could address scalability by connecting multiple, application-specific blockchain networks. Interoperability is, therefore, emerging as one of the critical requirements of blockchain technology because of the need to address data and value silos.
The general definition of interoperability, which stems from an information systems perspective, will not work for blockchain systems. The main challenges are accessing and accepting data from other networks. A preliminary study conducted by the author showed that these networks need to be integrated to interoperate. This research identifies three modes of integration with different security assumptions to address the data access issue. With the data acceptance issue, the value (asset) that each system carries needs to be categorised. Based on the category of asset, specific protocols need to be used to swap or transfer value. This paper proposes an asset classification and design decision framework for cross-chain integration that identifies the type of transfer and its security assumptions in any given scenario.
In brief, this thesis proposes a novel protocol to transfer assets between blockchains while preserving the properties needed for value transfer. This protocol is built on the assumption that the integration process happens in multiple steps between mutually agreed parties, and the users initiate the trade. This protocol transfers assets from one network to another in a way that burns the asset on one network and creates proof that will be ported to another network through this integration system. The recipient’s system then mints the same asset on its network with the aid of the proof. The feasibility of the transfer process was tested by deploying the protocol in a test network and evaluating the outcome. A theoretical analysis of the transfer process proves the desired properties, including atomicity, correctness, and security, exist. Formal verification of the protocol in various adversarial conditions has been done. This research shows that atomicity, which is commonly believed to hold in the time-lock mechanism, does not hold in general cross-chain situations. This work verifies that this property only holds under certain assumptions. It also shows that the other two desired properties, correctness and security, hold in the proposed protocol.Thesis (PhD Doctorate)
Doctor of Philosophy (PhD)
School of Info & Comm Tech
Science, Environment, Engineering and Technology
Full Text
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Lys, Léonard. "Sécurité et fiabilité des échanges inter-blockchain". Electronic Thesis or Diss., Sorbonne université, 2022. http://www.theses.fr/2022SORUS228.
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Le verrou technologique auquel cette thèse s'adresse est donc l'interopérabilité des blockchains. Chaque blockchain est un environnement indépendant avec son propre réseau, son protocole et ses règles. Elles n'ont pas nécessairement été conçues dans l'optique de s'interopérer. En vérifiant l'historique des transactions et en identifiant l'auteur d'une transaction grâce aux signatures numériques, il est possible de vérifier si une transaction peut ou non être ajoutée à la chaîne. Mais à ce jour, aucun mécanisme n'est prévu pour coordonner des transactions entre plusieurs chaînes afin de procéder à un échange. Un système d'échange de crypto-actifs entre deux chaînes cherche à satisfaire les propriétés suivantes; atomicité, l'échange à lieu intégralement ou pas du tout, sécurité, les participants ne risquent pas de perdre leur crypto-actifs et enfin vivacité, la durée de l'échange doit être limitée dans le tempsThe technological lock that this thesis addresses is therefore the interoperability of blockchains. Each blockchain is an independent environment with its own network, protocol and rules. They were not necessarily designed with interoperability in mind. By checking the history of transactions and identifying the author of a transaction thanks to digital signatures, it is possible to verify whether or not a transaction can be added to the chain. But to date, there is no mechanism for coordinating transactions between multiple chains to make an exchange. A system for exchanging crypto-assets between two chains seeks to satisfy the following properties; atomicity, the exchange takes place entirely or not at all, security, the participants do not risk losing their crypto-assets and finally vivacity, the duration of the exchange must be limited in time
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Pagliarani, Andrea. "New markov chain based methods for single and cross-domain sentiment classification". Master's thesis, Alma Mater Studiorum - Università di Bologna, 2015. http://amslaurea.unibo.it/8445/.
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Nowadays communication is switching from a centralized scenario, where communication media like newspapers, radio, TV programs produce information and people are just consumers, to a completely different decentralized scenario, where everyone is potentially an information producer through the use of social networks, blogs, forums that allow a real-time worldwide information exchange. These new instruments, as a result of their widespread diffusion, have started playing an important socio-economic role. They are the most used communication media and, as a consequence, they constitute the main source of information enterprises, political parties and other organizations can rely on. Analyzing data stored in servers all over the world is feasible by means of Text Mining techniques like Sentiment Analysis, which aims to extract opinions from huge amount of unstructured texts. This could lead to determine, for instance, the user satisfaction degree about products, services, politicians and so on. In this context, this dissertation presents new Document Sentiment Classification methods based on the mathematical theory of Markov Chains. All these approaches bank on a Markov Chain based model, which is language independent and whose killing features are simplicity and generality, which make it interesting with respect to previous sophisticated techniques. Every discussed technique has been tested in both Single-Domain and Cross-Domain Sentiment Classification areas, comparing performance with those of other two previous works. The performed analysis shows that some of the examined algorithms produce results comparable with the best methods in literature, with reference to both single-domain and cross-domain tasks, in $2$-classes (i.e. positive and negative) Document Sentiment Classification. However, there is still room for improvement, because this work also shows the way to walk in order to enhance performance, that is, a good novel feature selection process would be enough to outperform the state of the art. Furthermore, since some of the proposed approaches show promising results in $2$-classes Single-Domain Sentiment Classification, another future work will regard validating these results also in tasks with more than $2$ classes.
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Fahy, P. "Cross cultural training and the effective integration of the construction supply chain". Thesis, University College London (University of London), 2007. http://discovery.ucl.ac.uk/1445436/.
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Most professionals working within the UK construction industry are familiar with the recommendations of both the Latham and Egan reports, their conclusions called for improvement to the service that the construction industry delivers both for its clients and for the profitability of the enterprises involved. Their recommendations were the impetus for the drive within the industry to use strategic partnering as a replacement for competitive tendering and supply chain management as a means of improving the design process and reducing conflict, in order to achieve greater integration between enterprises involved in business transactions within the construction supply chain. It is however noteworthy that to date few suggestions have been made as to how to achiev e integration of partner enterprises and project teams once an agreement is made or a team formed and thus this paper seeks to investigate why fragmentation is necessary how it adds value to the overall labour process how cross-cultural training techniques can be used as a structured means of achieving the integration of partner enterprises or project teams by reducing conflict. The investigation will follow several paths. First it aims to identify the barriers to successful integration of enterprises within the construction supply chain. Second it reviews the various different techniques by which cross-cultural training is currently carried out and its effectiveness as an assimilation tool. Thirdly it looks at the effectiveness of the application of cross-cultural training in the construction context through an action research exercise carried out on a live project.
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Švehlová, Zuzana. "Cross-docking ako distribučná metóda". Master's thesis, Vysoká škola ekonomická v Praze, 2010. http://www.nusl.cz/ntk/nusl-73809.
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The current logistics chains must be designed to copy with short life cycles of products, high stock velocity, low degree of predictability etc. The conditions for accuracy, reliability and flexibility of deliveries at the markets have been changing, and that is why it is inevitable to seek new alternative methods that would lead to higher efficiency levels, remaining competitiveness and, at the same time, fulfil the needs and wishes of customers. In this paper I focuse on cross-docking which is a newer distribution method. In the first part of the paper, I try to determine the principles of this operation in distribution, identify individual types of cross-docking and in detail describe the assumptions and conditions under which the method should be implemented to reach the requested results. The paper then continues with an analysis of the current position of cross-docking and there are given several examples of demand driven supply chains that have been using this distribution method at a certain point. These examples are followed with a discussion on current options and problems of implementing cross-docking in the case of retailers and manufacturers.
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Wang, Qinjin. "Multi Data center Transaction Chain : Achieving ACID for cross data center multi-key transactions". Thesis, KTH, Skolan för informations- och kommunikationsteknik (ICT), 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-198664.
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Transaction support for Geo-replicated storage system is one of the most popular challenges in the last few years. Some systems gave up for supporting transactions and let upper application layer to handle it. While some other systems tried with different solutions on guaranteeing the correctness of transactions and paid some efforts on performance improvements. However, there are very few systems that claim the supporting of ACID in the global scale. In this thesis, we have studied on various data consistency and transaction design theories such as Paxos, transaction chopping, transaction chain, etc. We have also analyzed several recent distributed transactional systems. As the result, a Geo-replicated transactional framework, namely Multi Data center Transaction Chain (MDTC), is designed and implemented. MDTC adopts transaction chopping approach, which brings more concurrency by chopping transactions into pieces. A two phase traversal mechanism is designed to validate and maintain dependencies. For cross data center consistency, a Paxos like majority vote protocol is designed and implemented as a state machine. Moreover, some tuning such as executing read-only transaction locally helps to improve performance of MDTC in different scenarios. MDTC only requires 1 cross data center message roundtrip for executing a distributed transaction globally. ACID properties are kept in MDTC. We have evaluated MDTC with an extended TPC-C benchmark on top of Cassandra. The results from various setups have been evaluated and the result shows that MDTC achieves a good performance on throughout and latency. Meanwhile it has very low abort rate and scales well for transactions executed in a global scale.
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Haddad, S. S. G. "A comprehensive study on marketing/supply chain management cross-functional integration impact on performance". Thesis, Liverpool John Moores University, 2016. http://researchonline.ljmu.ac.uk/4707/.
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A substantial body of literature is written on the benefits of cross-functional integration between marketing and Supply Chain Management (SCM), nevertheless, a major gap was identified regarding concrete actions needed to be taken to effectively implement such integration and measures to realise and evaluate the integration's impact on performance. Previous research has failed to support the claim about the positive impact of marketing/SCM cross-functional integration on performance. This research proposes a framework to conceptualise marketing/SCM cross-functional integration in order to optimise Supply Chain Performance (SCP) and overall business performance through identifying a set of integrative marketing capabilities and a measurement taxonomy to assess the impact on performance. Due to the novelty of the research, scarce studies and limited cross-functional effective practices, purposive sampling of specific case studies had to be followed. The case studies were selected from the Egyptian Fast Moving Consumer Goods (FMCG) market. Five Multinational Companies (MNC) fulfilled a set of criteria to be used as the research case studies and to reflect a global perspective. The research was divided into three phases, exploratory, explanatory and descriptive. The exploratory phase used a semi-structured research approach. At the exploratory phase, the cross-functional integration status between the marketing department and the SCM departments was examined. Moreover, a set of integrative marketing capabilities was explored. These capabilities are claimed to have the ability to impact SCP and business performance if well aligned between the demand creation side of the organisation (marketing and sales) and the demand fulfilment side (SCM). In addition, a list of integrative practical SCP measurements were investigated at this phase in an attempt to compile a measurement taxonomy capable of assessing the impact of integrating/aligning the identified marketing capabilities with SCM. At the second phase, the explanatory phase, the study attempted to support the results of the exploratory phase. The explanatory phase was divided into two parts, Part A and Part B. This phase employed a more structured approach. Part A resulted in defining the strength of the relationship/influence between each identified marketing capability and each SCP attribute (reliability, agility, responsiveness, cost and asset management). Part B resulted in a proposed comprehensive measurement matrix of 28 Performance Indicators (PI) capable of assessing the impact of marketing/SCM cross-functional integration on SCP and business performance. Thus, a conceptual framework was developed to visualise the measured impact of marketing/SCM cross-functional integration on performance through illustrating the influence of integrating each marketing capability on each SCP attribute and that this influence can be measured by specific corresponding PI. Moreover, in order to practically illustrate a cross-functional integration process, a descriptive research phase was conducted. The integration processes of each case study were mapped and in-depth observations were undertaken to follow and understand the level and scheme of cross-functional integration between the marketing department and the SCM department at the case studies. The descriptive phase resulted in a practical cross-functional integration process model based on the best practices of the five MNCs. This research phase followed an unstructured research approach to fully comprehend the cross-functional integration phenomenon. Finally the cross-functional integration process of Unilever Mashreq, a core case study, was demonstrated and the results of its integrative Key Performance Indicators (KPIs) were shown in order to serve as a real life example reflecting the integration impact on performance. The research provides an original contribution to knowledge by developing a conceptual framework that can benefit companies by offering a tool to evaluate the effectiveness of the marketing/SCM cross-functional integration leading to improved SCP and overall business performance. Moreover, this research also presents a practical integration model to marketing and SCM executives with key cross-functional processes that facilitate implementing successful practices between the demand creation side of the organisation, the marketing department, and the demand fulfilment side of the organisation, the SCM department.
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Schwarz, Johanna. "Effects of recurring perturbations on byproduct cross-feeding chain lengths in a digital microbiome". Thesis, Linköpings universitet, Institutionen för fysik, kemi och biologi, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-176321.
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The human gut microbiome is a complex ecosystem with hundreds of species interacting with each other and the host. One function of the microbiome is to break down undigested nutrients into smaller nutrients, sometimes available for uptake by the host. The digestion of such macromolecules can involve several species where one feeds on another’s byproducts, forming a large cross-feeding network. The method of digital evolution can be of great aid in studying such complex ecosystems by creating models of the studied system. In this study, the digital evolution software Avida was used to study the effects of perturbations in the system on byproduct cross-feeding chain length. Intense perturbations were found to shorten the chain lengths in general whereas weaker perturbations had either a small or no effect. When perturbations ceased, most byproduct chains displayed recovery to lengths similar to the preperturbation lengths. This indicates that byproduct chain lengths may be kept short by common ecological mechanisms alone, explaining why very long chains are rarely observed while still theoretically possible.
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Lee, Jehoon. "Synthesis, characterization, and applications of the low cross-link density poly acrylate elastomers using direct reversible addition fragmentation chain transfer cross-linker". University of Akron / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=akron149798302050725.
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Xing, Lihong, e Yaoxuan Xu. "Product Classification in Supply Chain". Thesis, KTH, Industriell produktion, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-50398.
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Oriflame is a famous international direct sale cosmetics company with complicated supply chain operation but it lacks of a product classification system. It is vital to design a product classification method in order to support Oriflame global supply planning and improve the supply chain performance. This article is aim to investigate and design the multi-criteria of product classification, propose the classification model, suggest application areas of product classification results and introduces the product classification system into Oriflame ERP system. The research scope is defined within Oriflame supply chain from the order placed to suppliers by Global Supply department to the products received in Global Hubs.Investigation approaches in this article including information collection, multi-criteria integration, and quantified analysis. In addition, sample calculation and test to stakeholder departments have been done after the proposal of product classification system.The product classification applies a cross tabulate matrix to classify products into four classes (ABCD classification), it is believed that the results keep consistent at high level with both the calculation time horizons‟ increasing and the monthly forecast report update.Hence, Product Classification System is supposed to be applied in supply planning prioritization, inventory management and workforce balancing, etc.
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Marriott, Richard Keyworth. "Estimating and forecasting a demand chain for food using cross-section and time-series data". Thesis, University of Bristol, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.266903.
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Voigt, Clararose Faith. "Rapid supply chain strategy simulation development for enhanced cross-functional collaboration in high growth environments". Thesis, Massachusetts Institute of Technology, 2016. http://hdl.handle.net/1721.1/104262.
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Thesis: S.M., Massachusetts Institute of Technology, Department of Mechanical Engineering, 2016. In conjunction with the Leaders for Global Operations Program at MIT.Thesis: M.B.A., Massachusetts Institute of Technology, Sloan School of Management, 2016. In conjunction with the Leaders for Global Operations Program at MIT.
Cataloged from PDF version of thesis.
Includes bibliographical references (pages 77-78).
Like companies from almost every industry, NIKE faces a marketplace that is transitioning toward e-commerce. Over the next five years, retail sales through NIKE.com are anticipated to grow meteorically. For NIKE specifically, this shift represents a change not only in where and how consumers shop, but also a significant transformation of NIKE's underlying business model. NIKE has historically derived the majority of its revenue from wholesale accounts, representing 76% of its revenue in FY15.1 The evolution from wholesale brick-and-mortar sales to online retail sales requires substantial changes across NIKE's supply chain and manufacturing strategies to better serve the online consumer's ever-increasing service, quality and product offering expectations and to capture the revenue and gross-margin upsides of vertically-integrated retail. Given the ripple effects of this business model shift that will affect every part of NIKE's business, NIKE Global Operations leadership seeks to identify data-driven solutions that support cross-channel, cross-function collaboration to capture end-to-end insight. The key objective of this thesis is to identify simulation capabilities and development processes that will help supply chain leaders get to enhanced enterprise insight, faster. Thus, the goals of this research are two-fold: 1) Develop general end-to-end simulation capability and user needs assessments, and 2) Develop proof-of-concept simulators that integrate cross-functional metrics and business drivers, and enable rapid 'what-if scenario generation and comparison. After identifying user needs regarding both simulation capabilities and simulator content, two proof-of-concept simulations were developed from critical cross-functional business questions posed by a wide array of interviewed stakeholders. The first simulation presents a holistic framework for understanding liquidation supply and demand in the context of digital's forecasted growth. The second simulation concept presents a framework for selecting products with optimal characteristics for onshore/near-shore advanced manufacturing. Both concepts demonstrate that data and organizational integration is both feasible and desirable within the supply chain strategy planning process, and that simulation tools are valuable investments that can provide enriched insight above current processes.
by Clararose Faith Voigt.
S.M.
M.B.A.
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Mathus, Garza Jesús Andrés. "The lightning network cross-chain exchange : a decentralized approach for peer to peer exchange across blockchain". Thesis, Massachusetts Institute of Technology, 2018. http://hdl.handle.net/1721.1/119736.
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Thesis: M. Eng., Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science, 2018.This 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 59-61).
The development of decentralized blockchain-based systems has unlocked opportunity in untrusted systems. As more blockchains were created, however, a lack of interoperability became apparent. In response, centralized exchanges facilitating transactions across different blockchains emerged, reintroducing trusted third parties that blockchains were in part created to eliminate. Although blockchain capabilities were promising, their emergence resulted in embezzlement, hacks, and scandals that resulted in significant financial losses. A program allowing for peer to peer cross-chain exchanges would reestablish the decentralized foundation upon which blockchains were built and eliminate the risks associated with centralized exchanges. In this work we extend Lightning Network capabilities and develop a protocol enabling secure peer to peer channels to safely transact across blockchains. The system connects individuals using the Lightning Network's channel creation functions, and introduces four new channel commands: Price, Compare, Exchange, and Respond. Together, they integrate hashed timelock contracts that introduce peer to peer negotiations and exchange functionality from one blockchain to another. With this functionality in place, individuals gain more control over their own assets and rely less on third parties, reaffirming decentralization throughout the blockchain ecosystem and laying a new foundation for distributed systems to interact with less friction.
by Jesús Andrés Mathus Garza.
M. Eng.
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Samiullah, Muhammad Haris [Verfasser]. "Effect of cross-linking and chain defects on the crystallization of Poly(ethylene glycol) / Muhammad Haris Samiullah". Halle, 2018. http://d-nb.info/1155173236/34.
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Santos, Ana Filipa Lourenço dos. "Logística do frio : importância do Cross-Docking na indústria alimentar". Master's thesis, Instituto Superior de Economia e Gestão, 2017. http://hdl.handle.net/10400.5/14668.
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Mestrado em Gestão e Estratégia IndustrialNo contexto atual de uma economia global e competitiva, as empresas vêem-se obrigadas a dar rápidas repostas às necessidades de mercado e a adaptarem-se de forma constante. Além disso, assistimos, nos últimos anos, ao agravamento da situação económica e financeira em Portugal, o que levou a uma crescente preocupação na redução de custos nos vários segmentos da cadeia de abastecimento (Carvalho, 2012). Neste sentido, uma melhor eficiência da gestão de armazéns e transportes é uma das vias de redução dos custos de uma empresa. Sendo que no sector alimentar torna-se imperativo adaptar a distribuição à complexidade dos fluxos registados e às exigências dos clientes. Deste modo, este estudo procede a uma análise da plataforma de cross docking em duas empresas distribuidoras de produtos alimentares numa vertente da logística do frio, tendo como objectivo principal percecionar quais os resultados obtidos e quais as dificuldades sentidas pelo operador logístico com o processo cross docking e ainda as principais motivações para a implementação do processo logístico. Esta investigação permitiu concluir que as empresas em análise utilizam o cross docking de forma recorrente e ainda que adotaram este processo logístico para responderem de forma adequada aos desafios dos seus clientes.
In the current context of a global and competitive economy, companies are forced to respond quickly to market needs and to adapt constantly. In addition, in recent years we have witnessed a worsening of the economic and financial situation in Portugal, which has led to a growing concern to reduce costs in the various segments of the supply chain. In this sense, a better efficiency of the management of warehouses and transports is one of several ways of reducing the costs of a company. Since in the food sector it is imperative to adapt the distribution to the complexity of the registered flows and the requirements of the customers. Thus, this study proceeds to an analysis of the cross docking platform in two food distributors in a cold logistics area, with the main objective to understand the results obtained and the difficulties experienced by the logistics operator with the cross docking process and also the main motivations for the implementation of the logistics process. This investigation allowed to conclude that the companies in analysis use cross docking in a recurring way and yet they have adopted this logistic process to respond adequately to the constant challenges of their clients.
info:eu-repo/semantics/publishedVersion
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Errani, Silvia. "Analisi e ottimizzazione della gestione dello stock in una Supply Chain complessa: il caso Tetra Pak Closures". Master's thesis, Alma Mater Studiorum - Università di Bologna, 2016.
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L’obiettivo dell’elaborato è quello di analizzare la gestione attuale dello stock e della supply chain per i tappi Tetra Pak al fine di evidenziare le possibili aree di miglioramento quindi di proporre soluzioni migliorative in grado di ridurre l’attuale livello di stock in maniera adeguata al tipo di business.
In particolare verrà studiato l’ambiente operativo dei tappi a partire da un’analisi gerarchica per comprendere la rilevanza in termini logistici ed economici delle famiglie di tappi.
In seguito verrà esaminato il network produttivo tramite la definizione di un’anagrafica dei fornitori, seguita dall’analisi della saturazione degli impianti e dallo studio di coerenza dei flussi in uscita generati dai fornitori e destinati ai clienti interni o esterni all’organizzazione.
Si esporranno i vincoli caratteristici della produzione e si approfondirà il tema rilevante del cambio colore che rappresenta uno dei maggiori ostacoli in termini di flessibilità per il sistema produttivo attuale.
Quindi verrà descritto il funzionamento dinamico del sistema tramite la mappatura delle procedure di allocazione delle previsioni di vendita sui fornitori, della gestione delle scorte e della gestione dell’ordine.
Infine si procederà ad analizzare gli andamenti storici dello stock e del consumo dei prodotti per verificare la regolarità delle vendite ed eventuali comportamenti stagionali. Si valuterà l’attuale modalità di gestione delle scorte in base al risultato operativo riscontrato tramite l’utilizzo di due importanti strumenti: la stock-consumption cross matrix e l’indice di rotazione delle scorte.
Infine si procederà alla creazione di un nuovo paradigma di gestione delle scorte che riduca le criticità evidenziate nel corso delle analisi. La proposta verrà quindi validata tramite la simulazione del comportamento del sistema sui dati storici e il confronto con il modello attuale al fine di stimare l’entità dei benefici che si ritiene possano essere generati.
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Loeser, Richard C. "Essays on auto loan asset-backed securities| Moral hazard along the securitization chain, and the cross section of expected returns". Thesis, Georgetown University, 2016. http://pqdtopen.proquest.com/#viewpdf?dispub=10158124.
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Securitization is the practice of pooling the cashflows of a large number of financial assets and structuring them so as to create a much smaller number of tradable securities. The widespread adoption of securitization as a financing technique has been a major transformative force in the US and global financial systems in recent decades, creating new opportunities for funding and risk sharing. But securitization has also been viewed critically, due to its contributions to the expansion of subprime credit and to the interconnectedness between financial institutions, both of which played important roles for the Financial Crisis that started in 2007. In my thesis, I investigate issues of risk, pricing, and credit ratings of securitized debt in the United States before the Financial Crisis, using a dataset of US asset-backed securities (ABS) of car loans. Auto loans, together with credit card debt, are the most established collateral class for consumer credit securitization, with a volume of $115 billion outstanding at the end of 2015. In the first chapter, I study how prices of auto loan ABS tranches behave over the lifetime of the bonds. Asset-pricing theory posits that expected returns are determined by securities' systematic risk, which can be measured as exposure to risk factors. I employ an interest rate factor as well as different auto loan ABS market factors to study the cross section of expected monthly returns over the period December 1994 to April 2007. In Fama-MacBeth regressions, I find that the interest rate factor is significantly related to expected returns, and in univariate portfolio sorts I find that it generates a risk premium of 5 basis points per month. Furthermore, an auto loan ABS market factor that uses excess returns of lower-rated tranches over AAA-rated ones to measure systematic risk is also priced, with risk premia of 4 to 5 basis points. Finally, I study robustness of the results to the inclusion of time to maturity and credit ratings as alternative measures of risk, and find that exposure to the market factor is robustly priced, while the role of the interest rate factor is taken up by the additional covariates. In the second chapter, I study prime US auto loan ABS issued between 2002 and 2007, and investigate whether deals in which an investment bank securitizes loans acquired in whole-loan sales differ from deals where a lender securitizes collateral they have originated themselves. I argue that moral hazard issues arising from asymmetric information between agents involved in the securitization chain are stronger in deals of whole loans. In line with this view, I show that pool losses are larger in this case, controlling for observable risk characteristics, and conclude that moral hazard is operative in this market. Further, I find that rating agencies were able to recognize the greater risks of whole-loan deals and to adjust their assessments accordingly. Given ratings' important role in securitized debt markets, this implies that prices reflected incentive issues, thus mitigating possible negative effects on macroeconomic outcomes. Finally, I show that for lower-rated tranches, investors priced moral hazard beyond what is contained in ratings.
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Xu, Mingyi, e Wenyan Zheng. "How information flow is influenced by culture? : Cross-culture communication in supply chain management----A comparison between China and the West". Thesis, Internationella Handelshögskolan, Högskolan i Jönköping, IHH, Företagsekonomi, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-35900.
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Okpara, Onwuchekwa Chukwu. "An application of Patricia Cross' chain of response model to educational interest/participation of public housing residents : a case study approach /". Diss., This resource online, 1993. http://scholar.lib.vt.edu/theses/available/etd-10052007-143425/.
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Golinelli, Laura. "ottimizzazione della supply chain inbound di un sistema di produzione in condizioni di deficit dell’offerta il caso magni telescopic handlers". Master's thesis, Alma Mater Studiorum - Università di Bologna, 2021.
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Lo scopo principale di questa tesi svolta presso l’azienda Magni è stato quello di analizzare la situazione AS-IS del magazzino, attraverso la Matrice Incrociata ABC tra giacenza e consumo, in modo da ottenere una visione sulla situazione reale del magazzino, individuare i codici obsolescenti, quelli invece a rischio di stock out e calcolare l’indice di rotazione. Tale analisi si è resa necessaria poiché è risultato evidente avere molto materiale a giacenza per alcuni codici, mentre per altri si sono registrate continuamente situazioni di stock out.
Pertanto, partendo da questa analisi è stato costruito un modello per andare a definire alcuni parametri per la gestione degli approvvigionamenti dei materiali, quali la scorta di sicurezza e il margine di sicurezza, al fine di ottimizzare la gestione delle scorte e i costi. In particolare andando a definire questi parametri, che una volta validati, possono essere inseriti nel sistema MRP, si vorrebbe andare ad anticipare nel futuro quello che oggi è il principale problema, dato anche dalla situazione unica che stiamo attraversando della pandemia, ovvero i mancanti. La mancanze dei materiali nel momento del bisogno in linea è infatti un problema quotidiano per l’azienda.
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Benrqya, Yassine. "Product segmentation and distribution strategy selection : an application in the Retail Supply Chain". Thesis, Bordeaux, 2015. http://www.theses.fr/2015BORD0114/document.
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Dans le contexte économique actuel, les entreprises cherchent à développer de nouvelles stratégies de distribution pour leurs performances logistique. Dans cette quête de performances, les entreprises doivent adapter les stratégies de distribution misent en place avec les typologies de leurs produits. Plusieurs stratégies de distribution existent dans la chaîne logistique de grande distribution. Ces stratégies sont choisies sur la base des caractéristiques des produits, et /ou l'impact sur les performances logistiques. Dans cette thèse, nous étudions l'impact de trois stratégies de distribution, à savoir: stockage traditionnel, cross-docking pick by line et le cross-docking pick by store, sur trois performances de la logistiques, à savoir: le niveau de service, les coûts et le bullwhip effect. En outre, nous analysons l'impact des caractéristiques des produits sur les performances des stratégies de distribution et enfin proposer un cadre pour le choix de la stratégie la plus adaptée pour chaque produit. La chaîne logistique étudiée est composée de trois échelons: Centre de distribution du fournisseur, Centre de distribution du distributeur et les magasins. Basé sur un cas réel, nous effectuons une modélisation des processus, qui nous permet de développer un modèle déterministe de coût Macro et un modèle de simulation. Le modèle de coût macro permet d'évaluer l'impact des stratégies de distribution sur des coûts de la chaîne logistique. Après l'analyse macro des coûts, nous développons un modèle de simulation où nous intégrons les données relatives aux produits (la demande, le volume, etc.). Ce modèle permet une simulation dynamique du système la stratégie la plus adaptée pour chaque produit en fonction de ses caractéristiques et de l'impact sur les performances. A la fin de cette recherche, nous présentons une matrice de choix pour la segmentation des produits et choix de la stratégie de distributionNowadays companies must look to develop new distribution strategies in order to achieve the required performance from their supply chain. In this quest, companies wonder about the consistency of their distribution strategies with the products they are selling. Several types of distribution strategies exist in the retail supply chain. These strategies are chosen based on the products characteristics, and/or the impact on the supply chain performances. In this research, we study the impact of three distribution strategies, namely: traditional warehousing, cross-docking pick by line and cross-docking pick by store, on three supply chain performances, namely: service level, cost and bullwhip effect. In addition, we analyse the impact of the products characteristics on the performances of the distribution strategies and propose a framework for choosing the right strategy for each product. The supply chain studied is composed of three echelons: Supplier Distribution Centre, Retailer Distribution Centre and Stores. Based a real business case, we perform a process modelling, that allows us to develop a deterministic Macro cost model and a simulation model. The macro cost model allows to evaluate the impact of the distribution strategies on the supply chain cost performance. After the macro cost analysis, we develop a simulation model where we integrate the data related to the products (demand, volume, ordering quantities etc.) in the model. This model allows a more dynamic simulation of the system in a large time period and determines the right strategy to select for each product depending on its characteristics and the impact on the performances. At the end of this research, we present a framework for product segmentation and distribution strategy selection
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Peters, Philipp [Verfasser], e Stefan [Akademischer Betreuer] Endres. "T cell receptor modification by alpha and beta chain domain cross-over for adoptive T cell therapy / Philipp Peters ; Betreuer: Stefan Endres". München : Universitätsbibliothek der Ludwig-Maximilians-Universität, 2018. http://d-nb.info/1187135534/34.
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Yugo, Danielle Marie. "Pathogenesis and Cross-species Infection of Hepatitis E Virus". Diss., Virginia Tech, 2019. http://hdl.handle.net/10919/86785.
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Hepatitis E Virus (HEV), the causative agent of hepatitis E, is a zoonotic pathogen of
worldwide significance. The genus Orthohepevirus A of the family Hepeviridae includes all
mammalian strains of HEV and consists of 8 recognized genotypes. Genotypes 1 and 2 HEVs only
infect humans and genotypes 3 and 4 infect humans and several other animal species including
pigs and rabbits. An ever-expanding host range of genetically-diversified strains of HEV now
include bat, fish, rat, ferret, moose, wild boar, mongoose, deer, and camel. Additionally, the
ruminant species goats, sheep, and cattle have been implicated as potential reservoirs as well.
My dissertation research investigates a novel animal model for HEV, examines the immune
dynamics during acute infection, and evaluates the possibility of additional animal reservoirs of
HEV. The first project established an immunoglobulin (Ig) heavy chain knock-out JH (-/-)
gnotobiotic piglet model that mimics the course of acute HEV infection observed in humans and
evaluated the pathogenesis of HEV infection in this novel animal model. The dynamics of acute
HEV infection in gnotobiotic pigs were systematically determined with a genotype 3 human strain
of HEV. We also investigated the potential role of immunoglobulin heavy-chain JH in HEV
pathogenesis and immune dynamics during the acute stage of virus infection. This novel
gnotobiotic pig model will aid in future studies into HEV pathogenicity, an aspect which has thus
far been difficult to reproduce in the available animal model systems.
The objective of the second project for my PhD dissertation was to determine if cattle in
the United States are infected with a bovine strain of HEV. We demonstrated serological evidence
of an HEV-related agent in cattle populations with a high level of IgG anti-HEV prevalence. We
demonstrated that calves from a seropositive cattle herd seroconverted to IgG binding HEV during
a prospective study. We also showed that the IgG anti-HEV present in cattle has an ability to
neutralize genotype 3 human HEV in vitro. However, our exhaustive attempts to detect HEVrelated
sequence from cattle in the United States failed, suggesting that one should be cautious in
interpreting the IgG anti-HEV serological results in bovine and other species. Collectively, the
work from my PhD dissertation delineated important mechanisms in HEV pathogenesis and
established a novel animal model for future HEV research.Ph. D.
Hepatitis E Virus (HEV), the causative agent of hepatitis E, is a zoonotic pathogen of worldwide significance. According to the World Health Organization, there are approximately 20 million HEV infections annually, which result in 3.3 million cases of acute hepatitis E and >44,000 HEV-related deaths. Hepatitis E is a self-limiting acute disease in general, but carries the ability to cause high mortality in pregnant women and chronic hepatitis in immunocompromised individuals. The underlying mechanisms of HEV host tropism and progression of disease to chronicity are unknown. My dissertation work investigates a novel animal model for HEV, evaluates the possibility of additional animal reservoirs of HEV, and examines the immune dynamics during acute infection. The first project established an immunoglobulin (Ig) heavy chain knock-out JH (-/-) gnotobiotic piglet model that mimics the course of acute HEV infection observed in humans. The dynamics of acute HEV infection were determined in both the knock-out and wild-type piglets with a genotype 3 strain of human HEV. We also investigated the potential role of immunoglobulin heavy-chain JH in HEV pathogenesis and virus infection. In the second project, we determined if cattle in the United States are infected with a bovine strain of HEV. We showed serological evidence of an HEV-related agent in cattle as well as calves born in a seropositive herd. Despite the detection of specific antibodies recognizing HEV in cattle, definitive evidence of virus infection could not be demonstrated. Our exhaustive attempts to detect HEV-related sequence from cattle in the United States failed, suggesting that one should be cautious in interpreting the IgG anti-HEV serological results in bovine and other species. Collectively, the work from my PhD dissertation research delineated important mechanisms in HEV pathogenesis and established a novel animal model for future HEV research.
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Li, Dan. "Efficient Bayesian estimation for GARCH-type models via sequential Monte Carlo". Thesis, Queensland University of Technology, 2020. https://eprints.qut.edu.au/180752/1/Dan_Li_Thesis.pdf.
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This thesis develops a new and principled approach for estimation, prediction and model selection for a class of challenging models in econometrics, which are used to predict the dynamics of the volatility of financial asset returns. The results of both the simulation and empirical study in this research showcased the advantages of the proposed approach, offering improved robustness and more appropriate uncertainty quantification. The new methods will enable practitioners to gain more information and evaluate different models' predictive performance in a more efficient and principled manner, for long financial time series data.
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Hassini, Sanaa. "Développement des plate-formes logistiques au Maroc : enjeux et perspectives". Thesis, Paris 1, 2015. http://www.theses.fr/2015PA010061.
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Depuis les années 70, la production et la commercialisation des biens et services, la circulation des capitaux et des systèmes se sont fortement internationalisées. Ce phénomène a poussé les entreprises à optimiser leurs chaînes logistiques pour rester compétitives. Le Maroc s'inscrit dans la même tendance, vue sa position géographique joue un rôle de carrefour et de hub des échanges commerciaux. Le développement d'une réelle compétitivité logistique constitue un pilier du programme gouvernemental 2010-2020, d'où le lancement de la stratégie nationale pour le développement de la compétitivité logistique, dont principalement le contrat programme régissant le développement des plateformes logistiques, dites zones logistiques multi flux. La stratégie vise la réduction du poids du coût logistique de 5 points pour 2015, la création de 70 zones logistiques dans 17 villes sur environ 3 300 hectares. La mise en œuvre de ce programme logistique nécessite un effort cohérent, s'inscrivant dans le temps et des arbitrages complexes à opérer sur des domaines ne relevant pas des prérogatives d'un seul intervenant de la chaîne logistique. À la lumière de ces propos, nous avons vu en cette problématique un enjeu majeur nécessitant des actions managériales, une réflexion académique aussi par un focus sur le principe de la Supply Chain et plus précisément la logistique des plateformes. L'agencement et la connectivité des plateformes logistiques s'avère décisionnelle pour la réussite d'une politique commerciale compétitive d'une entreprise : nous ne pouvons pas concevoir des flux juste en mouvement, in fine, ils commencent d'un point de création de valeur vers un point de consommation et que ce sont ces nœuds (plateformes) qui œuvrent pour l'optimisation de l'organisation de toute la chaîne. Un retour vers l'histoire de la logistique, ses définitions et son évolution managériale dans le temps s'avérait nécessaire pour expliciter l'approche transversale et intégrée de la chaîne logistique ; et s'attarder par la suite sur les composantes, intégration des flux physiques et d'information, sur le poids de la stratégie logistique comme arme de différenciation vis-à-vis de la concurrence et sur les leviers d'optimisation des plateformes logistiques dans ces modèles. Le dernier chapitre traitera de la compétitivité logistique au Maroc, au regard des standards précités et les axes de développement du réseau des zones logistiques comme première orientation du contrat programme logistique nationalSince earlier years, production and sales of goods and services. capital flows and systems are highly internationalized. This has led companies to optimize their supply chain to remain competitive. Morocco is part of the same trend, for its geographical position acts as a hub and crossroads of trade. The development of logistics real competitiveness is a pillar of the government program 2010-2020. Hence the launch of the national strategy for the development of logistics competitiveness, mainly the program contract governing the development of logistics platforms. The strategy aims to reduce the weight of the logistics cost of 5 points for 2015, creating 70 logistics warehouses in 17 cities on 3 300 hectares. The implementation of the logistics program requires a coherent effort, registering in time and complex trade-offs in different areas in the supply chain. In the light of these remarks, we have seen this problem a major issues requiring managerial actions, academic reflection as a focus on the basics of suppl y chain and specifically logistics platforms. The layout and connectivity of logistics platforms proves the success of a competitive sales policy of a company : we cannot just design flow, ultimately, they start a creative point value to a consumption point and that it is these nodes (platforms) working to optimize the organization of the whole chain. A return to the story of logistics was important to present it, its definitions and managerial changes over time was needed to explain the cross and integrated approach to the supply chain; and linger afterwards on the components. integration of physical and information flows. the weight of the logistics strategy as a weapon of differentiation regarding the competition and logistics platforms optimization levers in these models. The final part will present logistics competitiveness in Morocco, in view of the above standards and network development axes logistics areas as a first orientation of the national logistics program
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Saeedi, Baharak. "Characterization of clinical enterococcal isolates in Swedish hospitals : studies on genetic relatedness and high-level gentamicin resistance /". Linköping : Dept. of Molecular and Clinical Medicine, Univ, 2005. http://www.bibl.liu.se/liupubl/disp/disp2005/med899s.pdf.
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Yin, Lunxiang. "Synthesis of new calcineurin inhibitors via Pd-catalyzed cross coupling reactions". Doctoral thesis, [S.l. : s.n.], 2005. http://deposit.ddb.de/cgi-bin/dokserv?idn=975817868.
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Dolynchuk, Oleksandr [Verfasser], Hans-Joachim [Akademischer Betreuer] Radusch e Manfred Hermann [Akademischer Betreuer] Wagner. "Experimental and theoretical description of two-way shape-memory behavior of cross-linked linear high-density and short-chain branched polyethylenes / Oleksandr Dolynchuk. Betreuer: Hans-Joachim Radusch ; Manfred Hermann Wagner". Halle, Saale : Universitäts- und Landesbibliothek Sachsen-Anhalt, 2015. http://d-nb.info/1077768133/34.
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Holt, Diane Lesley. "The development and empirical testing of a pressure/ response model of green supply chain management amongst a cross-sectoral sample of members of the Chartered Institute of Purchasing and Supply". Thesis, Middlesex University, 2005. http://eprints.mdx.ac.uk/6882/.
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This study develops and empirically tests a model of factors determining green supply chain management practices in organisations. Previous research on aspects of green supply chain management is dominated by anecdotal, sector specific studies that examine specific aspects of the supply chain, such as purchasing or logistics. Many argue this field is embryonic and lacking a structured integrative framework of research. This study addresses this gap by focussing on a whole supply chain approach that provides a synthesis of previous research to develop a model of green supply chain management. The data from a cross-sectoral survey of 149 members the Chartered Institute of Purchasing and Supply is used to test this model, using a variety of multivariate techniques. The model identifies environmental attitude as the primary determinant of green supply chain management practices, influenced to a lesser extent by external legislative factors. The influence of organisational contingencies on this model is also explored, and size identified as the only contingency that influences the relationships in this model. The dominant influence of environmental attitude suggests that within organisations there are internal factors, or individuals, that may push forward the green agenda, and those initiatives that focus on changing the environmental attitude/ culture of an organisation might be the most effective at improving environmental performance. This study suggests that factors previously identified as important within green supply chain management, such as supply chain or competitive pressures, are less influential than expected. However, future research should seek to compare the findings from this study with a larger, cross-sectoral sample that includes diverse organisations from different nations, sectors and levels of channel power.
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Fan, Yuan. "A study on solutions of cross-ledger intercommunication : Classification, analysis and comparison of crosschain projects". Thesis, KTH, Skolan för elektroteknik och datavetenskap (EECS), 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-278498.
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The phenomenon of isolated value in each blockchain system has become adistinct issue of the blockchain field. To address this problem, the demandof cross-chain intercommunication came up. In a narrow sense, cross-chainrefers to the process of asset interoperability between relatively independentblockchains. In this thesis, we mainly analyze the design principles, technicaldifficulties, and solutions of cross-chain intercommunication in this narrowsense. With the introduction of distributed ledger technology(DLT), we describethe interaction with other ledgers as the fundamental problem of currentblockchain technology.The implementation of cross-chain is mainly manifested as asset swap and assettransfer. So far, there are many existing application scenarios and projectsadopted from these manifestation. This paper will focus on these two implementations,illustrate their principles, locate the realization difficulties, andput forward corresponding possible solutions. Then we elaborated on eightpopular cross-chain projects underlying mechanism listed with three maincategories. A detailed comparison according to their interoperability level,consensus algorithm and application scenarios of the overall overview of 20cross-chain projects is presented as a table in the Appendix A.During the implementation process, we performed a simple atomic swap crosschainframework based on Hash Time Lock Contract between Bitshares andEthereum, then compare the performance with a wallet application presentby Ripple using Interledger Protocol. These two applications are representedthe two different use case of cross-chain realization.With limited number of projects to test out, our conclusion was reached aftera discussion with the relative merits of the two approaches. Interledger protocolhas a better solution from the aspects of the decentralization, scalability,and whether it supports traditional ledgers.Fenomenet isolerat värde i varje blockchain-system har blivit en distinkt frågaom blockchainfält. För att hantera detta problem kom kravet på interkommunikationmellan kedjor upp. I en smal mening hänvisar tvärkedjantill processen för interoperabilitet mellan tillgångar mellan relativt oberoendeblockchains. I denna avhandling analyserar vi huvudsakligen designprinciper,tekniska svårigheter och lösningar för interkommunikation mellan kedjor ien smal bemärkelse. Med introduktionen av distribuerad huvudboksteknologi(DLT) beskriver vi interaktionen med andra bokar som det grundläggandeproblemet med den nuvarande blockchain-tekniken.Tvärkedjans implementeringsform manifesteras huvudsakligen som tillgångsbyteoch överföring av tillgångar. Hittills finns det många befintliga applikationsscenarier och Pro projekt som antagits från dessa manifestation. Dettadokument kommer att fokusera på dessa två implementeringar, illustrera derasprinciper, lokalisera förståelsessvårigheterna och lägga fram motsvarandemöjliga lösningar. Sedan utarbetade vi åtta populära tvärkedjeprojekt underliggandemekanism listade med tre huvudkategorier. En detaljerad jämförelseberoende på deras driftskompatibilitetsnivå, konsensusalgoritm och tillämpningsscenarierav den övergripande översikten över 20 tvärkedjeprojekt presenterassom en tabell i Appendix A.Under genomförandeprocessen genomförde vi en enkel atomisk swap Cross-Chain ram baserad på hash Time lock kontrakt mellan Bitshares och Ethereum,sedan jämföra prestanda med en plånbok program som finns med Ripplemed Interledger Protocol. Dessa två applikationer föreställs de två olika användningsfallenav Cross-Chain genomförande.Med begränsade projekt att testa, nåddes vår slutsats efter en diskussion medrelativa fördelar med två metoder praktiskt taget. Interledger-protokollet haren bättre lösning med avseende på decentralisering, skalbarhet och huruvidadet stöder traditionella bokar.
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Barnett, Natalie (Tilly). "The Importance of Cross-Cultural Management in International Business: China and the United States". Scholarship @ Claremont, 2016. http://scholarship.claremont.edu/scripps_theses/881.
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Attention to cross-cultural management in today’s globalized workplace and marketplace is paramount to professional success. In this exploration I examine the nuances of Chinese business practices and organizational culture as well as their likely points of divergence from American traditions. The variance between organizational culture across national borders is often significant and, as demonstrated by the cases herein, can prove to be either an opportunity to succeed beyond expectation or fail to the same extent.
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Davis, Brett Andrew, e Brett Davis@abs gov au. "Inference for Discrete Time Stochastic Processes using Aggregated Survey Data". The Australian National University. Faculty of Economics and Commerce, 2003. http://thesis.anu.edu.au./public/adt-ANU20040806.104137.
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We consider a longitudinal system in which transitions between the states are governed by a discrete time finite state space stochastic process X. Our aim, using aggregated sample survey data of the form typically collected by official statistical agencies, is to undertake model based inference for the underlying process X. We will develop inferential techniques for continuing sample surveys of two distinct types. First, longitudinal surveys in which the same individuals are sampled in each cycle of the survey. Second, cross-sectional
surveys which sample the same population in successive cycles but with no attempt to track particular individuals from one cycle to the next. Some of the basic results have appeared in Davis et al (2001) and Davis et al (2002).¶ Longitudinal surveys provide data in the form of transition frequencies between the states of X. In Chapter Two we develop a method for modelling and estimating the one-step transition probabilities in the case where X is a non-homogeneous Markov chain and transition frequencies are observed at unit time intervals. However, due to their expense, longitudinal surveys are typically conducted at widely, and sometimes irregularly, spaced time points. That is, the observable frequencies pertain to multi-step transitions. Continuing to assume the Markov property for X, in Chapter Three, we show that these multi-step transition frequencies can be stochastically interpolated to provide accurate estimates of the one-step transition probabilities of the underlying process. These estimates for a unit time increment can be used to calculate estimates of expected future occupation time, conditional on an individuals state at initial point of observation, in the different states of X.¶ For reasons of cost, most statistical collections run by official agencies are cross-sectional sample surveys. The data observed from an on-going survey of this type are marginal frequencies in the states of X at a sequence of time points. In Chapter Four we develop a model based technique for estimating the marginal probabilities of X using data of this form. Note that, in contrast to the longitudinal case, the Markov assumption does not simplify inference based on marginal frequencies. The marginal probability estimates enable estimation of future occupation times (in each of the states of X) for an individual of unspecified initial state. However, in the applications of the technique that we discuss (see Sections 4.4 and 4.5) the estimated occupation times will be conditional on both gender and initial age of individuals.¶ The longitudinal data envisaged in Chapter Two is that obtained from the surveillance of the same sample in each cycle of an on-going survey. In practice, to preserve data quality it is necessary to control respondent burden using sample rotation. This is usually achieved using a mechanism known as rotation group sampling. In Chapter Five we consider the particular form of rotation group sampling used by the Australian Bureau of Statistics in their Monthly Labour Force Survey (from which official estimates of labour force participation rates are produced). We show that our approach to estimating the one-step transition probabilities of X from transition frequencies observed at incremental time intervals, developed in Chapter Two, can be modified to deal with data collected under this sample rotation scheme. Furthermore, we show that valid inference is possible even when the Markov property does not hold for the underlying process.
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RIU, RICCARDO. "Caratterizzazione di pannelli x-lam in pino marittimo sardo". Doctoral thesis, Università degli Studi di Cagliari, 2016. http://hdl.handle.net/11584/266697.
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Background and Purpose: The aim of this work is to present the idea of a short procurement chain of timber as a means to provide an increased value to Sardinian forests. It is based on the evidence that timber buildings are increasingly useful for a number of reasons including sustainability, the speed of erection, and excellent structural performance. However, most of the timber currently used in Sardinia is imported from outside this area. The idea is to use the best part of locally-grown trees to produce timber boards, while all the remaining part of the tree including the production waste is used as biomass for energy production. Important issues to address are the generally low mechanical properties of timber from locally-grown Sardinia trees such as Maritime Pine, which would make some wood-based products like glue-laminated timber not technically viable. Cross-laminated timber panels seems to be a possible solution to this problem because this wood-based product is manufactured in such a way that even with low-quality timber boards it is possible to obtain a medium quality panel. The panel is made of layers of timber boards with the adjacent layers glued under pressure at a right angle. Another issue is the need to grade the local timber, for which a number of specimens must be tested on destruction in order to identify a visual or a machine stress grading procedure. Last but not least, the panels must be tested on destruction to correlate their mechanical properties to the properties of the boards.
Materials and Method: the research has been developed through the following steps: 1) two maritime pine plantations with stands suitable for logging and processing were identified, extensively surveyed and sampled. On selected standing trees, based on measurements taken at different heights, the first preliminary grading was applied by sorting for structural and energy use. 2) Trees were harvested by a local company and the logs were finally assorted based on their size and their external defects. 3) The logs were then transported to the local sawmill, where different boards size required to build the grading rules and to produce the CLT panels were cut. Each board was then subjected to a non-destructive measurement of the Modulus of Elasticity using acoustic tool for measuring stress wave velocity (Viscan-Microtec) 4). After kiln drying, the required boards (approximately 840) were subjected to non-destructive measurements of their physical properties (density, humidity, defects etc.) using the machine purposely developed by Microtec. The aim was the calibration of this machine in order to enable the machine strength grading of Sardinia maritime pine. 5) The required boards were visually characterized and then tested to destruction in order to measure their strength and correlate this values to the presence of defects such as knot diameters and positions, grain deviations, etc. 6) Based on the results of phases 4 and 5, the visual and machine based grading rule for Sardinia Maritime Pine have been developed. 7) By applying the newly developed grading rules, some boards
5
have been selected among the available ones and used for the production of some prototypes of CLT panels. 8) In order to determine the structural performance, 68 panel have been tested to destruction. Testing was carried out in accordance with EN 408 on specimens with a span to depth ratio equal to 18 to determine the bending strength and stiffness, and on specimens with span to depth ratio equal to 9 to determine the shear strength. A number of different methods exist for the analysis and design of CLT elements, including the Shear Analogy Method and the Mechanically Jointed Beams Theory (Gamma Method). These methods have been considered in this study and a relative comparison have been presented in order to determine which method is most suitable when considering CLT formed using Sardinian grown timber..
Results: It was found that Maritime Pine as structural material is limited by stiffness rather than strength or density. The effective bending stiffness of CLT is a measure of the material stiffness in relation to the cross sectional build-up of the panel. To be competitive on the market, a Sardinian CLT product will have to compete with imported CLT panels, which are usually made from C24 graded material (spruce). In most cases this is simply because the C24 material is widely available on the market rather than a specification from the designer. The performance of panels made of Maritime Pine boards has been compared directly with that of imported products, demonstrating that an increase in the Sardinian panel depth of just 15% is sufficient to match the stiffness of the imported panels, which is the most important design property.
Conclusions: This work lays the foundation for the development of a short procurement chain of wood in Sardinia. The EDENSO project developed in parallel to this doctorate study is still in progress and further tests on maritime pine CLT panels are planned. A short procurement chain of timber is a possible means to create job opportunities and reduce depopulation, particularly important in some area of the island. By adding value to the forests by means of timber production used in prefabricated components employed in low-rise timber buildings, it is also possible to improve forest management and even extend forested areas, which have many positive effects on the environment, the landscape and the reduction of hydrogeological hazard.
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Jones, DeLariah Katherlene. "The Challenges of Cultural Business Relationships Within Manufacturing". ScholarWorks, 2016. https://scholarworks.waldenu.edu/dissertations/2491.
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Manufacturing leaders seek strategies to improve cross-cultural business relationships because of the increasing demand for outsourcing, which requires strong partnerships among manufacturing supply chain members. The purpose of this qualitative single case study was to explore successful strategies that manufacturing business leaders use to improve cross-cultural business relationships within their manufacturing supply chain. The targeted population included business leaders, fluent in English, within 1 company located at 2 different manufacturing sites in the Midwest region of the United States and the Northeast region of Mexico. The capability-based view theory was used to support knowledge sharing, trust, and strategic management. Methodological triangulation of the data from interviews, direct observations during site visits, and production documentation led to 4 themes. The 4 themes that emerged from thematic analysis were: information sharing, which was key to form a strong partnerships between the 2 manufacturing sites; the development of common business tools, which facilitates the development of common technical language that both sites understood and could translate into common expectations; training of business tools and processes, which expands knowledge sharing and best practices among the 2 sites; and understanding differences of people rather than culture. The implication for positive social change includes the potential to provide strategies to business leaders within various manufacturing industries on how to overcome the challenges of trust, information sharing, and resource management and provide successful cross-cultural business relationships and profitability.
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Tåhlin, Axel, e Victor Gjers. "Addressing shortcomings in goods distribution : A case study of a collaborative distribution network". Thesis, KTH, Skolan för industriell teknik och management (ITM), 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-279658.
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In the increasingly frequent distribution of the Fast-Moving Consumer Goods (FMCG) industry, there is an evident need of improving supply chain operations to ensure sustainability. As part of the supply chain, the distribution of goods often accounts for a major part of costs and resources. Therefore, focus needs to be directed toward ensuring a continuously functional distribution network. Performance measures of high asset utilization and high customer service level are often contradictory to some extent, making the improvement work even more complex. One way of increasing the performance of distribution operations is to take part in an interorganizational collaboration. The purpose of this master thesis is to investigate how the distribution operations of a FMCG company connected to a collaborative distribution network could be improved. Through a single case study, the researchers identify shortcomings in the distribution operations of a cross-docking network with a focus on a specific customer segment flow. By using concepts of demand management, supply chain collaboration, and customer satisfaction, the findings are analysed to highlight shortcomings in the distribution. Researchers discuss how distribution performance consequences could be related to certain managerial actions by presenting three different scenarios. The scenarios show a distinct effect on the number of shipments conducted towards cross-dock. As the number of shipments are reduced, economic benefits could be realized. However, these benefits must be carefully compared with the potential reduction in the level of customer service. The conclusion of this study suggests that managerial action is necessary to increase the economic sustainability of the distribution.Med den allt mer ökande distributionsfrekvensen inom dagligvaruhandeln finns det ett tydligt behov av att av att förbättra värdekedjeoperationerna för att säkerhetsställa hållbarhet. Distribution av det fysiska varuflödet är en viktig del av värdekedjan och står för en stor del av de totala kostnaderna och resursanvändningen. Det är därför väsentligt att fokusera på att säkerhetsställa ett funktionellt distributionsnätverk som presterar kontinuerligt. Hög nyttjandegrad samt hög kundnöjdhet är två prestationsgrundade objekt som är svåra att uppnå parallellt vilket försvårar ett förbättringsarbete. En metod för förbättring är att flera dagligvaruhandelsbolag går in i ett distributionssamarbete. Syftet med denna masteruppsats är att undersöka hur distributionsverksamheten i ett dagligvaruhandelsbolag som är kopplat till ett kollaborationsdistributionsnätverk kan förbättras. Genom en fallstudie identifierades flera tillkortakommanden i distributionsverksamheten i en del av varuflödet kopplat till en kundgrupp. Resultaten analyserades med hjälp av koncept från kundnöjdhet, kollaborationsvärdekedjor samt hantering av efterfrågan för att belysa tillkortakommanden inom distributionsverksamheten. Genom tre olika scenarion diskuteras olika konsekvenser på distributionsverksamheten som kan kopplas till olika åtgärder. Scenarierna visar att antalet genomförda leveranser till mellanlager har en stor inverkan på hur väl distributionsverksamheten presterar ekonomiskt. Studien föreslår sammanfattningsvis att olika beslutsåtgärder är nödvändiga för att öka den ekonomiska hållbarheten i distributionen.
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Moustras, Marios Zacharias. "Imine formation relating to cross-linking in cellular macromolecules". Thesis, University of Exeter, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.260620.
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Chau, Ngan Ngoc. "Intermittent demand forecasting for inventory control : the impact of temporal and cross-sectional aggregation". Thesis, Massachusetts Institute of Technology, 2020. https://hdl.handle.net/1721.1/127107.
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Thesis: M. Eng. in Supply Chain Management, Massachusetts Institute of Technology, Supply Chain Management Program, May, 2020Cataloged from the official PDF of thesis.
Includes bibliographical references (pages 57-64).
Managing intermittent demand is a challenging operation in many industries since this type of demand is difficult to forecast. This challenge makes it hard to estimate inventory levels and thus affects service levels. The purpose of this study is to examine the impact of multiple levels of data aggregation on forecasting intermittent demand, and subsequently, on inventory control performance. In particular, we propose a procedure that integrates lead-time and customer heterogeneity into the forecasting using temporal and cross-sectional aggregation. Using data from a real-world setting and simulation, our analysis revealed that when high service levels were important for the company operations, the forecasting approach using temporal aggregation that incorporates lead-time information yielded a higher level of inventory efficiency in terms of both the holding cost and the realized service level. It appeared that when forecasts using temporal aggregation were augmented with information about customer behavior, their purchase patterns might be a helpful consideration for enhancing inventory performance. These findings allow us to provide useful recommendations for improving the current forecasting procedure and inventory control to the sponsor company of this project.
by Ngan Ngoc Chau.
M. Eng. in Supply Chain Management
M.Eng.inSupplyChainManagement Massachusetts Institute of Technology, Supply Chain Management Program
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Avander, Alexander, e Erik Robertsson. "Batch size policy : A case study of the production site in Hillerstorp". Thesis, Linnéuniversitetet, Ekonomihögskolan, ELNU, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-12270.
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Abstrakt Examensarbete. Civilekonomprogrammet, Logistik, Linnéuniversitetet, 4FE05E, Våren 2011. Författare: Alexander Avander och Erik Robertsson Handledare: Peter Berling Titel: Batch size policy Thule Vehicle Solutions - A case study in Hillerstorp Bakgrund: Företaget har för närvarande ingen tydlig batch policy och detta är ett område som uppmärksammats som ett område med potentiella förbättringsmöjligheter. Ett projekt har inletts där två flöden (en hög omsättare och en låg) skall kartläggas och generera ett förslag till en tvärfunktionell batch policy. Syfte: Syftet med projektet är att med hjälp utav en ”current state map” föreslå en ny, kostnadseffektiv och tvärfunktionell batch policy samt jämföra detta med nuvarande policy för att påvisa potentiella förbättringsmöjligheter. Metod: Projektet använder ett kvalitativt arbetssätt för att påvisa effekter utav batch storlekar. Data hämtas från det undersökta företaget och från tidigare forskningar inom området som samlats genom universitetets resurser. Slutsatser: Företaget bör kunna eliminera ett flertal lager i sitt flöde som uppstått på grund av en batch policy där hela pallar föredras. En batch policy, där en storlek används till ett komponentlager och därefter en annan storlek som är en jämn del utav den första till slutlagret, har föreslagits som en tvärfunktionell batch policy. Detta förslag är testat i fyra versioner där samtliga var funna mer kostnadseffektiva än nuvarande policy. Att använda mindre batchstorlekar i den föreslagna policyn sänkte lagernivåer och ledtider. Dock var nuvarande, större batchstorleken mer optimal då lagerhållningskostnaderna är låga i förhållande till omställningskostnader. Sökord: Batch size, batch size costs, cross functional, inventory control, lean management, production flow, supply chain integration, transportation costs, value stream mapping.Abstract Master Degree Project. Business Administration and Economics Programme, Linnaeus University, Logistics, 4FE05E, Spring 2011. Authors: Alexander Avander and Erik Robertsson Supervisor: Peter Berling Title: Batch size policy Thule Vehicle Solutions - A case study in Hillerstorp Background: The Company has currently no clear batch size policy and batch sizes are an area that has been recognized with potential earnings within the company. A project to map two flows (a high volume and a low volume) and suggest a new cross functional batch size policy has been initiated. Purpose: The purpose of this project is to, with the help of a current state map, propose a new cost effective and cross functional batch size policy for the business unit car accessories and compare this to the present batch size policy to show possible earnings. Method: This project uses a qualitative approach to show the effect of batch sizes with data supplied from the Thule Sweden AB and researched through the Linnaeus University’s recourses. Findings: Thule Vehicle Solutions should be able to remove several inventories that have been caused by a batch size policy where whole pallets are preferred. A batch size policy where one batch size is used to the semi-finished inventory and another size, part of first batch size, from that inventory until the finished-goods inventory has been suggested as a cross functional batch size policy. This suggestion has been tested and in four different versions was found more cost effective than the current policy. Using smaller batch sizes in the suggested batch size policy decreased inventory levels and lead times. However, the current, larger batch size was more optimal as the holding costs are low and the set up costs are high. Key words: Batch size, batch size costs, cross functional, inventory control, lean management, production flow, supply chain integration, transportation costs, value stream mapping.
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Högman, Kristina. "Country-Adjusted Motivation : A Conceptual Model, applied in the Context of Motivation of a Code of Conduct". Thesis, Linnéuniversitetet, Institutionen för organisation och entreprenörskap (OE), 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-35905.
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Companies adopt codes of conduct to set minimum standards on ethical issues, minimums that suppliers must keep. Problems has been found by other researchers regarding suppliers motivation to comply to the code. This study develops a conceptual model for how motivation can be adjusted to different countries, depending on economic situation, politic stability and culture of the country. Country-Adjusted Motivation is made by shaping motivating in relation to the human need that dominates in the country and by using the national culture to colour motivation. The model is applied in the context of how to motivate suppliers to a code of conduct in different countries. The model Country-Adjusted Motivation could as well be applied to other multinational contexts, where strong motivation is needed.
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Thomas, Rodney H. "Machine Learning for Exploring State Space Structure in Genetic Regulatory Networks". Diss., NSUWorks, 2018. https://nsuworks.nova.edu/gscis_etd/1053.
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Genetic regulatory networks (GRN) offer a useful model for clinical biology. Specifically, such networks capture interactions among genes, proteins, and other metabolic factors. Unfortunately, it is difficult to understand and predict the behavior of networks that are of realistic size and complexity. In this dissertation, behavior refers to the trajectory of a state, through a series of state transitions over time, to an attractor in the network. This project assumes asynchronous Boolean networks, implying that a state may transition to more than one attractor. The goal of this project is to efficiently identify a network's set of attractors and to predict the likelihood with which an arbitrary state leads to each of the network’s attractors. These probabilities will be represented using a fuzzy membership vector.
Predicting fuzzy membership vectors using machine learning techniques may address the intractability posed by networks of realistic size and complexity. Modeling and simulation can be used to provide the necessary training sets for machine learning methods to predict fuzzy membership vectors. The experiments comprise several GRNs, each represented by a set of output classes. These classes consist of thresholds τ and ¬τ, where τ = [τlaw,τhigh]; state s belongs to class τ if the probability of its transitioning to attractor belongs to the range [τlaw,τhigh]; otherwise it belongs to class ¬τ. Finally, each machine learning classifier was trained with the training sets that was previously collected. The objective is to explore methods to discover patterns for meaningful classification of states in realistically complex regulatory networks.
The research design took a GRN and a machine learning method as input and produced output class < Ατ > and its negation ¬ < Ατ >. For each GRN, attractors were identified, data was collected by sampling each state to create fuzzy membership vectors, and machine learning methods were trained to predict whether a state is in a healthy attractor or not. For T-LGL, SVMs had the highest accuracy in predictions (between 93.6% and 96.9%) and precision (between 94.59% and 97.87%). However, naive Bayesian classifiers had the highest recall (between 94.71% and 97.78%). This study showed that all experiments have extreme significance with pvalue < 0.0001. The contribution this research offers helps clinical biologist to submit genetic states to get an initial result on their outcomes. For future work, this implementation could use other machine learning classifiers such as xgboost or deep learning methods. Other suggestions offered are developing methods that improves the performance of state transition that allow for larger training sets to be sampled.
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Ramirez, Lourdes Patricia. "Few-cycle OPCPA laser chain". Phd thesis, Université Paris Sud - Paris XI, 2013. http://tel.archives-ouvertes.fr/tel-00806245.
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The Apollon-10 PW laser chain is a large-scale project aimed at delivering 10 PW pulses to reach intensities of 10^22 W/cm^2. State of the art, high intensity lasers based solely on chirped pulse amplification (CPA) and titanium sapphire (Ti:Sa) crystals are limited to peak powers reaching 1.3 PW with 30-fs pulses as a result of gain narrowing in the amplifiers. To access the multipetawatt regime, gain narrowing can be suppressed with an alternative amplification technique called optical parametric chirped pulse amplification (OPCPA), offering a broader gain bandwidth and pulse durations as short as 10 fs. The Apollon-10 PW laser will exploit a hybrid OPCPA-Ti:Sa-CPA strategy to attain 10-PW pulses with 150 J and 15 fs. It will have two high-gain, low-energy amplification stages (10 fs ,100 mJ range) based on OPCPA in the picosecond and nanosecond timescale and afterwards, and will use Ti:Sa for power amplification to the 100-Joule level.Work in this thesis involves the progression of the development on the Apollon-10 PW front end and is focused on the development of a high contrast, ultrashort seed source supporting 10-fs pulses, stretching these pulses prior to OPCPA and the implementation of the picosecond OPCPA stage with a target of achieving 10-mJ pulses and maintaining its bandwidth. To achieve the final goal of 15-fs, 150-J pulses, the seed source must have a bandwidth supporting 10-fs and a temporal contrast of at least 10^10. Thus from an initial commercial Ti:Sa source delivering 25-fs pulses with a contrast of 10^8, spectral broadening via self-phase modulation and contrast enhancement with cross polarized (XPW) generation was performed. Subsequently, the seed pulses were stretched to a few picoseconds to match the pump for picosecond OPCPA. Strecher designs using an acousto-optic programmable dispersive filter (dazzler) for phase control in this purpose are studied. A compact and straightforward compressor using BK7 glass is used and an associated compressor for pulse monitoring was also studied. Lastly, the picosecond OPCPA stage was implemented in single and dual stage configurations.
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Ferreira, Suzete Cleusa. ""Prevalência do HHV - 8 em doadores de sangue e politransfundidos na cidade de São Paulo, pelas técnicas de imunofluorescência indireta e Nested PCR"". Universidade de São Paulo, 2005. http://www.teses.usp.br/teses/disponiveis/5/5136/tde-19102005-153641/.
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A prevalência de anticorpos e DNA viral de HHV-8 em 400 doadores de sangue e 50 indivíduos politransfundidos da Fundação Pró-Sangue Hemocentro de São Paulo, através das técnicas de Nested PCR e IFI para antígenos lítico e latente. Foi detectada uma soroprevalência mais alta entre doadores de sangue(4%) quando comparados a indivíduos politransfundidos (14%) (p= 0,002). A prevalência também foi mais alta entre mulheres em relação a homens, 7% versus 1.8% (p= 0,012; 95% IC 1,14 - 16,6). Foram detectados DNA de HHV-8 no plasma e PBMC de um doador 0.25%. Esta amostra foi seqüenciada confirmando a presença de HHV-8. O encontro de DNA viral no plasma de um doador de sangue indica a transfusão sanguínea como um possível meio de transmissão deste agenteThe prevalence of antibodies and DNA viral of HHV-8 in 400 donors of blood and 50 receiving of the Fundação Pró-Sangue Hemocentro of São Paulo, through Nested PCR'S techniques and IFI for lithic and latent antigens. A seroprevalence of 4% was detected in the donors of blood and 14% in receiving, significantly high in comparison with the prevalence in donors of blood (p = 0,002). There was a significant difference in the prevalence among men 1,8% and 7% in the women (p= 0,012; 95% CI 1,14 - 16,6). They were detected DNA of HHV-8 in the plasma and a donor's 6,3% PBMC, and it was sequenced and submitted to the Gene Bank where presented 100% of identity. This allows to define the transmission tax and the need of introducing methods for this agent's selection
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Koulikoff-Souviron, Marie. "Characteristics of reciprocal dyadic supply relationships and related people management practices : a cross-case comparison of an inter- and an intra-firm context". Thesis, Cranfield University, 2003. http://hdl.handle.net/1826/55.
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Ambos, Tina Claudia, Phillip C. Nell e Torben Pedersen. "Combining Stocks and Flows of Knowledge: The Effects of Intra-Functional and Cross-Functional Complementarity". Wiley, 2013. http://dx.doi.org/10.1111/j.2042-5805.2013.01063.x.
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In the area of knowledge management and knowledge governance, previous research has mostly focused on either knowledge stocks or knowledge flows of firms or organizational units. Contrary to this work, our study is among the first to integrate these two perspectives in order to shed light on the complementarity effects of different types of knowledge stocks and flows in the multinational corporation (MNC). We investigate intra-functional as well as cross-functional complementarity effects from the perspective of the knowledge recipient. We test the impact of stocks on flows on the benefit that is created for MNC units. Based on a comprehensive sample of 324 relationships between MNC units we find that both types of complementarity create benefits for these units, but that the effects from intra-functional combinations of knowledge stocks and flows are significantly stronger than from cross-functional combinations.
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Oliveira, Rui. "The emergence of strategic capabilities in a south-north cross-border M&A and their post-acquisition process". Thesis, University of Manchester, 2017. https://www.research.manchester.ac.uk/portal/en/theses/the-emergence-of-strategic-capabilities-in-a-southnorth-crossborder-ma-and-their-postacquisition-process(4c7f033d-c4bd-40bc-b90a-5e3f03d60730).html.
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The internationalization of Chinese companies is a new reality. This is even more innovative if we isolate Chinese private firms and in particular those having businesses in developed countries as targets. If the first internationalizations of Chinese private firms to developed countries showed us less than optimal results; the latest show mixed outcomes. Interestingly, some of the latest firms with positive results are breaking through stable and complex global value chains, such as the automotive industry, to become first tier suppliers to transnational assemblers and even acquire large and apparently more capable first-tier global suppliers in developed countries. Based on the relevant literature, namely: automotive global value chain (Holweg et al., 2009; Humphrey & Memedovic, 2003; Sturgeon & Lester, 2004; Sturgeon & Van Biesebroeck, 2011; Thun, 2001); developing countries firms internationalization (Boisot & Meyer, 2008; Buckley et al., 2007; Child & Rodrigues, 2005; Dunning, 2006b; Luo & Tung, 2007; Mathews, 2006); and Chinese business system (Redding & Witt, 2009; Whitley, 1992, 1999b; Witt & Redding, 2013a, 2013b; Zhang & Whitley, 2013); this is not expected. This is why we decided to thoroughly understand the dynamic capabilities of one of such firms. Using an in-depth case study the analysis was performed with an integrative tri- perspective approach using institutional, industrial and firm levels. The starting point was on the understanding of the dynamic capabilities that the Chinese firm had since its incorporation until become a first-tier supplier to a transnational assembler followed by its internationalisation. Delving deeper into the internationalisation of the organisation, the study analysed, using the business system framework, how the Chinese firm was able to acquire and manage its new acquisition, which had superior tangible and intangible capabilities, and successfully overcame the predictable clashes that such a setting creates. This is in line with the call for exploratory research (Deng, 2012; Meyer, 2014; Narula, 2012; Ramamurti & Singh, 2009) due to the still infancy of the problem under study, the anecdotal descriptions, and the lack of reliable quantitative data. Our findings show us a Chinese firm with specific and divergent dynamic capabilities since its incorporation, when compared with the expected and typical companies, that should have emerged from the Chinese business system. A clear focus in a unique industry associated with the ambition, yet constraints, to become a global company, combined with the necessity of an industrial upgrade, and a deliberate strategy that allowed the firm to become a turnover company of €1 Billion in less than ten years. Furthermore, the long-term vision of the group and the use of a supportive partnering strategy for the post- acquisition period has been an essential component of the firm's success. Finally, we found that the firm has been joining disperse competences and resources it was lacking, using different dynamic capabilities, by grouping and directing them into a specific well-stated vision. From a theoretical perspective, these findings are particularly important since they do not support the institutional arbitrage literature nor accommodate the current different theoretical extensions on international business literature. From an empirical sense we explain that firms are not fate to integrate in a post M&A period and describe how this can be achieved.
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Mohammad, Salimian. "A Mixed Integer Second Order Cone Programming Reformulation For A Congested Location And Capacity Allocation Problem On A Supply Chain Network". Master's thesis, METU, 2013. http://etd.lib.metu.edu.tr/upload/12615407/index.pdf.
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Supply chain network design involves location decisions for production facilities and distribution centers.
We consider a make-to-order supply chain environment where distribution centers serve as crossdocking
terminals. Long waiting times may occur at a cross-docking terminal, unless sucient handling
capacity is installed. In this study, we deal with a facility location problem with congestion
eects at distribution centers. Along with location decisions, we make capacity allocation (service
rate) and demand allocation decisions so that the total cost, including facility opening, transportation
and congestion costs, is minimized.
Response time to customer orders is a critical performance measure for a supply chain network. The
decisions like where the plants and distribution centers are located aect the response time of the
system. Response time is more sensitive to these decisions in a make-to-order business environment.
In a distribution network where distribution centers function as cross-docking terminals, capacity or
the service rate decisions also aect the response time performance.
This study is closely related to a recent work Vidyarthi et al. (2009) which models distribution centers
asM/G/1 queuing systems. They use the average waiting time formula ofM/G/1 queuing model. Thus,
the average waiting time at a distribution center is a nonlinear function of the demand rate allocated to
and the service rate available at the distribution center. The authors Vidyarthi et al. (2009) propose a
linear approximation approach and a Lagrangian based heuristic for the problem.
Dierent than the solution approach proposed in Vidyarthi et al. (2009), we propose a closed form
formulation for the problem. In particular, we show that the waiting time function derived from M/G/1
queuing model can be represented via second order conic inequalities. Then, the problem becomes
a mixed integer second order cone programming problem which can be solved by using commercial
branch-and-bound software such as IBM ILOG CPLEX. Our computational tests show that proposed reformulation can be solved in reasonable CPU times for practical size instances.
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KE, BAI-YUEH, e 柯百嶽. "Pallet.io : Cross-Chain Smart Contract". Thesis, 2018. http://ndltd.ncl.edu.tw/handle/92fxzr.
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碩士國立臺灣大學
資訊工程研究所
106
With the advent of Bitcoin in 2008, blockchain technology has been paid much attention to society every year and has inspired the development of many other blockchain technology. The idea smart contract, which was proposed in 1994, was successfully merged into Ethereum. It brings the development of blockchain technology into the next era. Smart contract is one of the most important features in blockchain technology nowadays, which allows users to trade money, property of anything valuable without a middleman. Compared to traditional contracts, it can save a lot of manpower, time, and resources, but can bring more stable and more secure results. After the advent of Ethereum, the development of blockchain-based smart contract flourished. There are many unique and valuable blockchain come out. However, every blockhain is parallel. It make the demand of cross-chain rising. This thesis proposes a cross-chain smart contract architecture that could connect most cryptocurrency and try to reach balance between difficulty, low-cost and trusty.
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Ishripersadh, Kogilambal. "Cross-linking of saturated long-chain hydrocarbons". Thesis, 1999. http://hdl.handle.net/10321/2888.
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Submitted in fulfillment of the requirements for the Master's of Technology: Chemistry, M L Sultan Technikon, 1999.Saturated long chain hydrocarbons, such as paraffin waxes, have a large variety of applications. These applications may, however, be restricted by certain properties of the wax such as brittleness and in compounding. Cross-linking of the long chains in waxes may provide improved physical properties and hence a wider application of these waxes
M
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Tasi, Ya-Jen, e 蔡亞蓁. "Cross-Docks Network Design for Cold Chain Distribution". Thesis, 2015. http://ndltd.ncl.edu.tw/handle/80708052288180205996.
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碩士國立雲林科技大學
工業工程與管理系
103
The establishment of the whole system and process of the cold supply chain is more difficult and complex than that of the normal logistics system. It is because the product has the perishable characteristic, which is served by cold supply chain. In this characteristic, we need to face the problems encountered in the normal logistics system, and we need to additionally consider time limit and temperature control in order to avoid product damage when it is in any process of the delivery. AT the other Literature, The Solution option of reduce transport distances or shorten delivery time is one way, but in this study, It is using distribution problem to consider this situation. At the cross-dock distribution, Compared with tradition distribution it is be high efficiency and more flexible, lower inventory levels. The situation of the high holding cost or multiple product of the supply chain, the cross-dock distribution effect would be more evident. Therefore, This study consider cross-dock distribution effect and cold supply chain characteristics, Molding a new cross-dock network distribution model. Based on past literature, this study will use a Artificial Bee Colony Algorithm to solve problem.