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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
51

The complex third-party tracking ecosystem : a multi-dimensional perspective

Falahrastegar, Marjan January 2017 (has links)
The third-party tracking ecosystem continuously evolves in scope, therefore, understanding of it is at best elusive. In this thesis, we investigate this complex ecosystem from three dimen-sions. Firstly, we examine third-party trackers from a geographical perspective. We observe a non-uniform presence of local third-party trackers between regions and countries within re-gions, with some trackers focusing on specific regions and countries. Secondly, we focus on how trackers share user-specific identifiers (IDs). We identify user-specific IDs that we suspect are used to track users. We find a significant amount of ID-sharing practices across different organ-isations providing various service categories. Our observations reveal that ID-sharing happens at a large scale regardless of the user profile size and profile condition such as logged-in and logged-out. Finally, we quantify the effect of tracker-blockers, a popular option for the users to protect their privacy, on the page-load performance. The effect of such tools on the over-all user browsing experience is questionable as the blockage of trackers can disrupt the general website loading process. The tracker-blockers we studied have a considerable negative effect on page-load performance. Unexpectedly, we find that even highly popular websites are negatively affected. This thesis points to significant gaps in our knowledge about the inner workings of this complex ecosystem. Moreover, it highlights some of the challenges that we face when attempting to preserve user's privacy by using tracker-blockers.
52

Modelování rent z pojištění odpovědnosti / Annuity modelling in MTPL

Eštóková, Agáta January 2012 (has links)
Title: Annuity modelling in MTPL Author: Bc. Agáta Eštóková Department: Department of Probability and Mathematical Statistics Supervisor: Mgr. Karolína Kočová Supervisor's e-mail address: kkocova@koop.cz Abstract: This diploma thesis focuses on the possibilities of using generational mortality tables for third party liability insurance, mainly for bodily injured. It describes the construction of generational mortality tables and the creation of RBNS claims reserves. Besides the demonstration of these models, the work analyzes the results of calculating reserves in accordance with generational mortality tables and actual mortality tables of the Czech Republic. An impor- tant element in provision calculating is the simulation of future life expectancy of the insured, i.e. random generation of life expectancy based on generational mortality data. Characteristics of the distribution of reserves are derived from simulations. Furthermore, we compare the results of stochastic and determi- nistic approach of computing the reserves. Keywords: third party liability insurance, RBNS, annuity, generational morta- lity tables.
53

A prestação de serviços de logística integrada na indústria automobilística no Brasil: em busca de alianças logísticas estratégicas. / Providing integrated logistics services to the automotive industry in Brazil: the quest for strategic logistics alliances.

Léo Tadeu Robles 26 March 2001 (has links)
O estudo aborda as características de relacionamento entre empresas montadoras e operadores logísticos no Brasil, tendo em vista o caráter estratégico da prestação de serviços de logística integrada na indústria automobilística, setor que vem apresentando uma transformação muito grande em suas práticas e organização. O foco de análise é a logística de suprimento em montadoras de automóveis, não se abordando a distribuição de veículos prontos. O processo de globalização tem exigido a reestruturação das empresas para sua sobrevivência e desenvolvimento, a busca de vantagem competitiva, pela incorporação a seus produtos, da cadeia de valor dos clientes, e, no relacionamento interempresarial, novas formas de administração de suas cadeias de suprimentos. Os serviços de logística se mostram mais abrangentes, na estratégia e processo produtivos, numa nova caracterização da atuação de operadores logísticos. Na sua terceirização, tendência firme que se constatou, teoricamente, poderiam se apresentar alianças estratégicas entre empresas. As características de relacionamento nessa direção são abordadas nesta tese. O estudo foi conduzido com base em fontes secundárias e pela realização de entrevistas junto a montadoras e operadores logísticos. Metodologicamente, adotou-se o estudo de multicasos na identificação de arranjos institucionais da operação da logística por operadores especializados. Foi identificado um ambiente em transição, em que a terceirização é um fato, com operadores logísticos, assumindo, cada vez mais, parcelas importantes das atividades dos contratantes. No entanto, o relacionamento está longe de caracterizar verdadeiras alianças estratégicas, apresentando-se uma interação dinâmica e, muitas vezes contraditória, entre as empresas. A consciência mútua das interdependências, aceitação e entendimento de interesses individuais, a serem conciliados em alianças estratégicas, com o objetivo comum de melhor condição competitiva e compartilhamento justo de riscos, custos e recompensas, podem ser fundamentais na implantação de novas formas de produção na indústria e na adoção de operadores logísticos únicos. / This study analyses the relationship among automotive industries and third party logistics (3PL) providers in Brazil, regarding the strategic aspect of the integrated logistics service in that industry, which is showing a remarkable changing in its organization and production practices. This analysis focuses the inbound logistic in car assembling plants. The globalization process requires firms restructure to enable survival and development, the search for competitive advantages, reflecting in their products their clients value chain and, in the relationship among firms, innovative ways of supply chain management. Logistics services assume a broader scope in the production process and in the company strategy, reflecting their providing by 3PL firms in a new way. In this outsourcing, theoretically, strategic alliances among firms could take place. The relationships characteristics towards this direction are analyzed in this thesis. The study used secondary sources and interviews were conducted with automotive and logistic services providers executives. For identifying institutional arrangements in logistics services providing industry, the basic methodology adopted was multicase studies. This work identifies a transition environment with outsourcing as a fact and logistics providers increasingly assuming relevant portions of the automotive industry activities. Nevertheless, their relationships are far from actual strategic alliances, occurring a dynamic and, many times, contradictory interaction among the firms. Consciousness of mutual interdependence, agreement and understanding of individual interests to be conciliated for the achievement of the common objective of better competitive condition and fair risks, costs and rewards sharing are needed. This could be a sound basis for the new production ways and define solids fundamentals for the new trend of full logistic provider implementations, already seen in the industry.
54

Emerging Security Threats in Modern Digital Computing Systems: A Power Management Perspective

Shridevi, Rajesh Jayashankara 01 May 2019 (has links)
Design of computing systems — from pocket-sized smart phones to massive cloud based data-centers — have one common daunting challenge : minimizing the power consumption. In this effort, power management sector is undergoing a rapid and profound transformation to promote clean and energy proportional computing. At the hardware end of system design, there is proliferation of specialized, feature rich and complex power management hardware components. Similarly, in the software design layer complex power management suites are growing rapidly. Concurrent to this development, there has been an upsurge in the integration of third-party components to counter the pressures of shorter time-to-market. These trends collectively raise serious concerns about trust and security of power management solutions. In recent times, problems such as overheating, performance degradation and poor battery life, have dogged the mobile devices market, including the infamous recall of Samsung Note 7. Power outage in the data-center of a major airline left innumerable passengers stranded, with thousands of canceled flights costing over 100 million dollars. This research examines whether such events of unintentional reliability failure, can be replicated using targeted attacks by exploiting the security loopholes in the complex power management infrastructure of a computing system. At its core, this research answers an imminent research question: How can system designers ensure secure and reliable operation of third-party power management units? Specifically, this work investigates possible attack vectors, and novel non-invasive detection and defense mechanisms to safeguard system against malicious power attacks. By a joint exploration of the threat model and techniques to seamlessly detect and protect against power attacks, this project can have a lasting impact, by enabling the design of secure and cost-effective next generation hardware platforms.
55

Provider recommendation based on client-perceived performance

Thio, Niko January 2009 (has links)
In recent years the service-oriented design paradigm has enabled applications to be built by incorporating third party services. With the increasing popularity of this new paradigm, many companies and organizations have started to adopt this technology, which has resulted in an increase of the number and variety of third party providers. With the vast improvement of global networking infrastructure, a large number of providers offer their services for worldwide clients. As a result, clients are often presented with a number of providers that offer services with the same or similar functionalities, but differ in terms of non-functional attributes (or Quality of Service – QoS), such as performance. In this environment, the role of provider recommendation has become more important - in assisting clients in choosing the provider that meets their QoS requirement. / In this thesis we focus on provider recommendation based on one of the most important QoS attributes – performance. Specifically, we investigate client-perceived performance, which is the application-level performance measured at the client-side every time the client invokes the service. This performance metric has the advantage of accurately representing client experience, compared to the widely used server-side metrics in the current frameworks (e.g. Service Level Agreement or SLA in Web Services context). As a result, provider recommendation based on this metric will be favourable from the client’s point of view. / In this thesis we address two key research challenges related to provider recommendation based on client-perceived performance - performance assessment and performance prediction. We begin by identifying heterogeneity factors that affect client-perceived performance among clients in a global Internet environment. We then perform extensive real-world experiments to evaluate the significance of each factor to the client-perceived performance. / From our finding on heterogeneity factors, we then develop a performance estimation technique to address performance assessment for cases where direct measurements are unavailable. This technique is based on the generalization concept, i.e. estimating performance based on the measurement gathered by similar clients. A two-stage grouping scheme based on the heterogeneity factors we identified earlier is proposed to address the problem of determining client similarity. We then develop an estimation algorithm and validate it using synthetic data, as well as real world datasets. / With regard to performance prediction, we focus on the medium-term prediction aspect to address the needs of the emerging technology requirements: distinguishing providers based on medium-term (e.g. one to seven days) performance. Such applications are found when the providers require subscription from their clients to access the service. Another situation where the medium-term prediction is important is in temporal-aware selection: the providers need to be differentiated, based on the expected performance of a particular time interval (e.g. during business hours). We investigate the applicability of classical time series prediction methods: ARIMA and exponential smoothing, as well as their seasonal counterparts – seasonal ARIMA and Holt-Winters. Our results show that these existing models lack the ability to capture the important characteristics of client-perceived performance, thus producing poor medium-term prediction. We then develop a medium-term prediction method that is specifically designed to account for the key characteristics of a client-perceived performance series, and to show that our prediction methods produce higher accuracy for medium-term prediction compared to the existing methods. / In order to demonstrate the applicability of our solution in practice, we developed a provider recommendation framework based on client-perceived performance (named PROPPER), which utilizes our findings on performance assessment and prediction. We formulated the recommendation algorithm and evaluated it through a mirror selection case study. It is shown that our framework produces better outcomes in most cases, compared to country-based or geographic distance-based selection schemes, which are the current approach of mirror selection nowadays.
56

Coordination between Firms and their Logistics Service Providers : What do Firms in Sweden Think About the Coordination Carried Out by their LSPs?

Tamasiunas, Antanas, Pang, Jinxu January 2013 (has links)
In this thesis 5 Swedish companies that use logistics service providers (LSPs: carriers, intermediaries and third party logistics providers) are interviewed to establish how Swedish LSPs fare in terms on coordination. More specifically, the research is focused on answering 3 questions: (1) what are users’ perceptions about their LSPs’ coordination, (2) what coordination behaviors are the LSPs most and least successful in, and (3) what factors are affecting LSPs’ coordination.
57

GAP i efterfrågan : En undersökning om efterfrågan på miljövänliga transporter

Rehnström, Simon, Almlöf, Linnea January 2013 (has links)
Purpose: Corporations today see a greater responsibility towards society regarding the environmental impact of their actions, using available transportation options that are more eco-friendly can reduce this impact significantly. Martinsen and Björklund (2012) identifies a set of gaps between supply and demand of green logistics services. This paper aims to address what it is that affects the demand for these alternative solutions and what could be done to increase the usage of them, thereby decreasing this gap. Design/methodology/approach: A quantitative study with six Logistics Service Providers (LSP) and 24 companies that purchase transportation services, all operating in Sweden. Data is collected through semi-structured telephone interviews with people responsible for the purchasing of transports as well as key account managers within the service providing companies. Findings: Just as the LSP’s interviewed in this paper thought, the main focus of the transport buying companies are the costs. Therefore paying extra only to benefit the environment and not the economy of the company is not something a lot of companies are prepared to do at this time. However there are solutions such as intermodality which are highly demanded, these are often both cost effective and more environmentally friendly, the problem as many companies see it, is that the rail network needs to expand to be able to cover bigger areas and increase the capacity. Research limitations/implications: The research paper focuses on companies operating on the Swedish market, for that reason findings cannot be generalized to other countries and sectors. Practical implications: Findings can be used by LSP’s and political decision making parties to get a better understanding of the demand for this type of services and what is perceived as important by the customers. Originality/value: There is a lack of earlier studies that mainly focus on the demand of more environmentally friendly transport services. Therefore a study of this kind is important to create an understanding and thereby improve the overall situation on the market in terms of environmental sustainability.
58

Towards a Boundary Resources Theory of Software Platforms

Ghazawneh, Ahmad January 2012 (has links)
The last few years have witnessed a significant increase in the frequency and magnitude of involving third-party application developers in software platforms. While this involvement offers great opportunities in building and sustaining platform innovation, it also exposes platform owners to significant challenges. Typically, platform owners facilitate the involvement of third-party developers by providing resources, referred to in this thesis as boundary resources, that give access to the platform, shift design capability, and facilitate the use of the platform’s core technologies. At the same time, these resources have the potential to be used to maintain platform control. This involves seemingly conflicting goals that creates a challenge for platform owners in finding the right balance. The main objective of this thesis is to investigate and understand the role of boundary resources in platform owners’ efforts to stimulate third-party development. To this end, this thesis proposes a theoretical model of boundary resources. This model centres on various drivers behind boundary resources design and use, and how these drivers interact in third-party development. The thesis also presents a comprehensive view of governance and strategizing practices used by platform owners through boundary resources. This thesis comprises a cover and a collection of five published research papers. The thesis applies a qualitative research method and employs multiple case studies. Boundary resources, innovation networks and platform governance perspectives have been synthesized to build a theoretical  basis to analyze the empirical findings. This thesis complements and extends the literature on software platforms, and the insights derived from the thesis enhance previous research on third-party development. In addition, it provides a focused theoretical account of the interfaces between platform owners and third-party developers that contributes to the body of knowledge developed around using tools for innovation.
59

Third party logistics in Chinese automotive industry : a case study of a Chinese automotive manufacturer-Shanghai General Motors

Zhang, Luying, Hou, Zhaoyu, Qiu, Xiaoying January 2012 (has links)
In today’s Chinese automotive industry, the traditional self-management logistics mode cannot fulfill higher requirement of logistics performance, more and more automotive manufacturers seek to outsource their logistics activities to third-party logistics service providers to optimize supply chain management. Milk run system is a typical example of 3PL mode in automotive industry, which can help firms minimize costs and improve logistics function simultaneously. Given the increasing importance of 3PL, many literatures are concerned about the usage of 3PL; however, few of them discussed 3PL form the perspective of China. Besides, in terms of Milk run system, seldom articles focus on this innovative logistics mode, especially in Chinese automotive industry. Therefore, in this thesis work, authors discuss 3PL from the perspective of Chinese automotive industry, especially focus on the typical 3PL mode—Milk run system, set SGM as case company, aiming at find out the factors that facilitate Chinese automotive manufacturers convert self-management mode to 3PL mode, and then discuss the benefits of professional 3PL services; in addition, authors emphasize on Milk run system and its unique benefits.  The research objectives are solved by combining literature review and empirical findings. Relevant literatures are downloaded from Internet and Library’s database. Empirical findings are gathered by interviews and questionnaires.  Through comparing literature review with findings, both external and internal factors that facilitate automotive manufacturers change logistics mode are summarized. Besides, some professional 3PL services are identified by literature review and validated by questionnaires. According to different categories of 3PL services, their benefits are discussed from two aspects: supply chain integration and core competence improvement. In addition, the benefits of Milk run system are represented by literature review and then through comparing with empirical findings, some unique benefits are summarized. In this thesis work, the main theoretical contribution is the knowledge of Milk run system, which including its features, implementation processes, and its benefits.
60

The Network Infrastructure : "A Case Study on Third Party in the Process of Networking"

Lundström, Elin January 2011 (has links)
This thesis increases the understanding of networking and especially the role of third parties in the network infrastructure. That networking is an important activity that plays a central role for companies’ success is common sense in today’s highly changing environment. However, the role of third parties operating within the networking infrastructure has only been research sparingly. As the author’s literature review showed even though we have knowledge about the network process and attributes of the different actors there is still a lack of theories to explaining them. For instance, it is still unknown how the third party can successfully bridge structural holes and how its specific characteristics influence the network. Furthermore, it is unclear how this is affecting the people and consequently the companies involved in the network. The empirical focus of this thesis is on the Swedish Chamber of Commerce in the Netherlands and the empirical study consists of a qualitative case study. Data is collected through documents, participant observations and qualitative interviews in the Netherlands. The research shows that the third party has succeeded in provide a business and social platform that facilitate the process of combination and exchange of intellectual capital and this creates business opportunities for the members of the network. The study contributes to the research about the third party in the network infrastructure by identifying three success processes how the third party can contribute to the business network and this are: firstly, in combining and exchanging knowledge through a well-developed network structure. Secondly, through creating anticipation and motivation between the members for sharing of knowledge and thirdly, when bridging the gap between different actors with various kinds of knowledge. The thesis also provides suggestions for how the third party can improve their work to create and deepen relationship within networking. As the thesis demonstrates the role of the third party in a network and as more business is done within networks and with the help of a third party, it also has practical implications. In particular, the study is beneficial for the Swedish Chamber of Commerce, but also for other third party organizations that aim to improve their role in the networking process.

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