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1

Wikblom, Carl. "Federated Identity Management : AD FS for single sign-on and federated identity management." Thesis, Mittuniversitetet, Institutionen för informationsteknologi och medier, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:miun:diva-17039.

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Organizations are continuously expanding their use of computer ser-vices. As the number of applications in an organization grows, so does the load on the user management. Registering and unregistering users both from within the organization and also from partner organizations, as well as managing their privileges and providing support all accumu-lates significant costs for the user management. FIdM is a solution that can centralize user management, allow partner organizations to feder-ate, ease users’ password management, provide SSO functionality and externalize the authentication logic from application development. An FIdM system with two organizations, AD FS and two applications have been deployed. The applications are constructed in .NET, with WIF, and in Java using a custom implementation of WS-Federation. In order to evaluate the system, a functional test and a security analysis have been performed. The result of the functional test shows that the system has been implemented successfully. With the use of AD FS, users from both organizations are able to authenticate within their own organization and are then able to access the applications in the organizations without any repeated authentication. The result of the security analysis shows that the overall security in the system is good. The use of AD FS does not allow anyone to bypass authentication. However, the standard integra-tion of WIF in the .NET application makes it more susceptible to a DoS attack. It has been indicated that FIdM can have positive effects on an organization’s user management, a user’s password management and login procedures, authentication logic in application development, while still maintaining a good level of security.
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2

陳正邦 and Ching-pong Chan. "Management of properties with single-ownership and multi-ownership." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2002. http://hub.hku.hk/bib/B31968831.

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3

Chan, Ching-pong. "Management of properties with single-ownership and multi-ownership." Hong Kong : University of Hong Kong, 2002. http://sunzi.lib.hku.hk/hkuto/record.jsp?B25176225.

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4

Scott, Mark W. (Mark Winfield) 1961. "System architecture evaluation by single metric." Thesis, Massachusetts Institute of Technology, 1998. http://hdl.handle.net/1721.1/9755.

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Thesis (S.M.)--Massachusetts Institute of Technology, System Design and Management Program, February 1999.
Includes bibliographical references (leaf 62).
System architecture is driven by numerous upstream influences. Regulations, market forces, cultural biases, and a variety of other influences can significantly affect whether architecture is successful or not. To be successful the architect must include upstream influences in the design. Few if any architectural methods are available to systematically account for upstream influences. A new method, Evaluation by a Single Metric (ESM), is presented. It is based on fundamental design principles. It enhances the system architectural process by organizing upstream influences that drive architecture. The ESM method is concept independent and used before concept focused system architectural methods. Specifically, system boundaries, salient upstream elements. and functional connections thereof are systematically determined. The ESM process provides a concept neutral framework used to evaluate candidate architectural concepts. The ESM method is very general. It can be used for the design of nearly any kind of system or process. The thesis makes extensive use of a diverse set of examples which highlight ESM advantages and flexibility.
by Mark W. Scott.
S.M.
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5

Rhermini, Siham. "Identity, Access Management and Single Sign-On Web-based Solutions." Thesis, KTH, Skolan för informations- och kommunikationsteknik (ICT), 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-92235.

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The systems' complexity growth over wide networks has increased the need for a centralized access control and strong authentication methods. And because systems have become increasingly distributed, additional need for single sign on solutions have become even more relevant. The aim of this study is to draw the state of the art on strong authentication solutions for protecting resources over networks and establish an evaluation summary of all the solutions presented. The study also presents the single sign on functionality and different architectures to implement it. This study contains a market review of available commercial solutions that implement strong authentication and single sign on. One of the solution is selected for implementing the authentication service for a payroll management system for one of Accenture clients. The technical details regarding this product are presented including architecture, installation and tests. The tested product needed custom developments to successfully implement the certificate authentication combined with an advanced certificate validation service. The single sign on functionality requires custom development to be integrated with all the system components.
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6

Rikfin, Ryan M. (Ryan Michael) 1972. "The single airport static stochastic ground holding problem." Thesis, Massachusetts Institute of Technology, 1998. http://hdl.handle.net/1721.1/28191.

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7

Kefer, Daniel. "Identity management." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2009. http://www.nusl.cz/ntk/nusl-218170.

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The master thesis is divided into two parts. In the first part, identity management is described on theoretical basis. Particular domains of identity management including authentication, authorization and audit are explained as well as Single Sign-On concept, i.e. using single credentials and entering them just once for access to multiple independent systems or services. In the second part, which forms the main part of this thesis, a practical project was implemented on the infrastructure of the Department of Telecommunications within the Faculty of Electrical Engineering and Communication, Brno University of Technology. The goal of this project was to create an environment for central 4 authentication and Single Sign-On using only open source technologies within a computer laboratory used for teaching OS Linux. The project is based on OS Linux Debian, Kerberos as a protocol for secure authentication and LDAP server OpenLDAP. For the Single Sign-On demonstration, NFS services for accessing data on the network were chosen. Using NFS services, users can sign-on to any workstation and access all their data. Administration of users and their import from central FEEC databases was implemented using scripts developed in Python. Next, using Apache, PHP and MySQL, a front-end audit interface for the network administrator was developed in order to inspect and evaluate security events in the network. Messages about suspicious events are delivered to administrator’s mailbox in real time. The project is intended as a security platform which means that other services can be implemented for Single Sign-On as well as new mechanisms for evaluation of suspicious events.
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8

Lawrence, Barbara. "Gender and general practice: the single-handed woman General Practitioner." Thesis, Aston University, 1987. http://publications.aston.ac.uk/12186/.

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This research examines women GPs' careers, how they run their practices and how they reconcile professional and domestic lives. It looks at the particular experiences of women GPs who practise alone, and at the pressures in past practice experience which have led them to do so. It is argued that many of the problems of group practice which can be identified are attributable to gender. For example, one reason given for entering general practice is a desire to be able to provide the full range of medical care and not to specialise. Women GPs, however, may find themselves seeing more women patients for "women's problems" and children than they would freely choose. Women have not entered general practice in order to specialise in these areas of medicine. Indeed, if they had wanted to specialise in obstetrics, gynaecology or paediatrics they would have had difficulty advancing very far in these male-dominated areas of hospital hierarchy. Other gender related problems exist for women in general practice and practising single-handedly is one strategy that women GPs have used to counter the problems of working in male-dominated practices and partnerships. However, the twenty-four hour commitment of single-handed practice may bring further pressures in reconciling this with responsibility for home life. Out-of-hours cover, which can be viewed as the link between professional and domestic life, where the one intrudes into the other, is also examined in terms of the gender issues it raises. The interaction of gender and ethnicity is also considered for the 11 Asian women GPs in the study. Interviews were conducted with 29 single-handed women GPs in the Midlands. In addition, some cases were studied in greater depth by being observed in their surgeries and on home visits for a day each. A qualitative/feminist approach to analysis has been employed.
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9

Treves, Katharine F. "The management of insomnia on a residential pain management programme : a single case series and qualitative analysis." Thesis, n.p, 1999. http://ethos.bl.uk/.

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10

Wang, Yi 1970. "Modeling and solving single and multiple facility network restoration problems." Thesis, Massachusetts Institute of Technology, 1998. http://hdl.handle.net/1721.1/9944.

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11

Bohlandt, Florian Martin. "Single manager hedge funds - aspects of classification and diversification." Thesis, Stellenbosch : Stellenbosch University, 2013. http://hdl.handle.net/10019.1/85859.

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Thesis (PhD)--Stellenbosch University, 2013.
A persistent problem for hedge fund researchers presents itself in the form of inconsistent and diverse style classifications within and across database providers. For this paper, single-manager hedge funds from the Hedge Fund Research (HFR) and Hedgefund.Net (HFN) databases were classified on the basis of a common factor, extracted using the factor axis methodology. It was assumed that the returns of all sample hedge funds are attributable to a common factor that is shared across hedge funds within one classification, and a specific factor that is unique to a particular hedge fund. In contrast to earlier research and the application of principal component analysis, factor axis has sought to determine how much of the covariance in the dataset is due to common factors (communality). Factor axis largely ignores the diagonal elements of the covariance matrix and orthogonal factor rotation maximises the covariance between hedge fund return series. In an iterative framework, common factors were extracted until all return series were described by one common and one specific factor. Prior to factor extraction, the series was tested for autoregressive moving-average processes and the residuals of such models were used in further analysis to improve upon squared correlations as initial factor estimates. The methodology was applied to 120 ten-year rolling estimation windows in the July 1990 to June 2010 timeframe. The results indicate that the number of distinct style classifications is reduced in comparison to the arbitrary self-selected classifications of the databases. Single manager hedge funds were grouped in portfolios on the basis of the common factor they share. In contrast to other classification methodologies, these common factor portfolios (CFPs) assume that some unspecified individual component of the hedge fund constituents’ returns is diversified away and that single manager hedge funds should be classified according to their common return components. From the CFPs of single manager hedge funds, pure style indices were created to be entered in a multivariate autoregressive framework. For each style index, a Vector Error Correction model (VECM) was estimated to determine the short-term as well as co-integrating relationship of the hedge fund series with the index level series of a stock, bond and commodity proxy. It was postulated that a) in a well-diversified portfolio, the current level of the hedge fund index is independent of the lagged observations from the other asset indices; and b) if the assumptions of the Efficient Market Hypothesis (EMH) hold, it is expected that the predictive power of the model will be low. The analysis was conducted for the July 2000 - June 2010 period. Impulse response tests and variance decomposition revealed that changes in hedge fund index levels are partially induced by changes in the stock, bond and currency markets. Investors are therefore cautioned not to overemphasise the diversification benefits of hedge fund investments. Commodity trading advisors (CTAs) / managed futures, on the other hand, deliver diversification benefits when integrated with an existing portfolio. The results indicated that single manager hedge funds can be reliably classified using the principal factor axis methodology. Continuously re-balanced pure style index representations of these classifications could be used in further analysis. Extensive multivariate analysis revealed that CTAs and macro hedge funds offer superior diversification benefits in the context of existing portfolios. The empirical results are of interest not only to academic researchers, but also practitioners seeking to replicate the methodologies presented.
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12

McNamee, Dylan James. "Virtual memory alternatives for transaction buffer management in a single-level store /." Thesis, Connect to this title online; UW restricted, 1996. http://hdl.handle.net/1773/6961.

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13

Hammer, Lory (Lory Yeamans). "Component acquisition and single-source vendor management strategy in a defense application." Thesis, Massachusetts Institute of Technology, 2009. http://hdl.handle.net/1721.1/50092.

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Thesis (M.B.A.)--Massachusetts Institute of Technology, Sloan School of Management; and, (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering; in conjunction with the Leaders for Manufacturing Program at MIT, 2009.
Includes bibliographical references (p. 51-52).
Building an aircraft carrier is one of the most complex manufacturing undertakings in the world. Each component must be designed, tested and manufactured to not only Northrop Grumman Shipbuilding's (NGSB) exceptionally high standards, but also to the standards, requirements and approvals of both the Navy and the US Federal Government. As a result of these standards and requirements, lead times for construction materials can exceed two years, while a similar component, purchased for industrial use may have a lead time of 90 days. To add to the complexity, the scheduled delivery date for the carrier is fixed, and compressed so that engineering design and construction must take place concurrently. In essence, the ship is under construction years before the design is complete. As a result of concurrent engineering, a complex procurement process and a limited vendor base, some material is chronically late to the Required-in-Yard (RIY) date, causing deviations from the optimal construction schedule and impacting the cost of the ship. This thesis analyzes the current CVN 78 valve purchasing process to identify opportunities to leverage the product model and existing process infrastructure to improve material delivery to schedule and decrease construction costs for CVN 79. It is the goal of this research to improve the supply chain to support the preferred construction schedule, while reducing cost and risk associated with component acquisition. This thesis begins with an analysis of the current supply chain system within NGSB New Carrier Construction.
(cont.) It then explores the current state of vendor relations between NGSB and the supply base. The cost impact for delaying construction due to delinquent valves is identified and presented. Then specific vendor management strategies are examined. This thesis proposes a framework for improving on-time delivery of the component and lowering overall supply chain cost by (1) pursuing strategic alliances with valve vendors, (2) providing greater visibility of demand earlier in the engineering design cycle and (3) using this visibility to drive procurement timing to improve delivery to scheduled need date. The thesis presents a case study in vendor collaboration and provides recommendations. Finally, it discusses the impact of applying the framework to similar components within the New Carrier Construction Program and the potential application of the framework to NGSB's other active programs and shipbuilding locations.
by Lory Hammer.
S.M.
M.B.A.
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14

Junior, Josà Mairton Barros da Silva. "Radio resource management for single-and two-hop device-two-device communications." Universidade Federal do CearÃ, 2014. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=13524.

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CoordenaÃÃo de AperfeÃoamento de Pessoal de NÃvel Superior
Ericsson Brasil
O aumento da demanda por serviÃos ricos em multimÃdia e a escassez do espectro eletromagnÃtico tÃm motivado a pesquisa de tecnologias capazes de aumentar a capacidade de sistemas sem fio sem requerer espectro adicional. Nesse contexto, comunicaÃÃes Dispositivo-a-Dispositivo (D2D, do inglÃs Device-to-Device) representam uma tecnologia promissora. Ao permitir comunicaÃÃo direta e de baixa potÃncia entre os dispositivos, comunicaÃÃes D2D levam a um maior e mais inteligente reuso dos recursos de rÃdio, permitindo um descongestionamento da rede de transporte de dados. Como resultado, a capacidade total do sistema e especialmente a eficiÃncia espectral sÃo aumentadas; e a proximidade entre os dispositivos permitem transferÃncias de dados com baixo atraso e altas taxas de dados, sem requerer potÃncia extra da bateria dos dispositivos. Entretanto, com o objetivo de tornar real os potenciais ganhos de comunicaÃÃes D2D como uma rede secundÃria da celular (primÃria), algumas questÃes chave precisam ser controladas. Assumindo que os dispositivos se comunicando estÃo cientes um do outro, a condiÃÃo do enlace (canal) deve ser avaliada. Caso seja benÃfica, tÃcnicas de GestÃo de recursos de rÃdio (RRM, do inglÃs Radio Resource Management) sÃo empregadas para que a interferÃncia co-canal causada nos dispositivos celulares seja mitigada. Tais tÃcnicas podem ser resumidas como: agrupamento, seleÃÃo de modo e controle de potÃncia. Nessa dissertaÃÃo, eu foco a minha atenÃÃo para RRM em comunicaÃÃes D2D subjacentes a redes LTE, e para as principais tÃcnicas de RRM para mitigar a interferÃncia co-canal. Objetivando a reduÃÃo da interferÃncia intra-celular e na melhoria da eficiÃncia espectral, eu formulo um problema conjunto de agrupamento e controle de potÃncia. Entretanto, devido à sua complexidade eu proponho mÃtodos sub-Ãtimos para agrupar usuÃrios celulares e D2D com o objetivo de minimizar a interferÃncia intra-celular, levando em conta a ortogonalidade espacial entre os usuÃrios que compartilham o recurso. AlÃm disso, eu analiso mÃtodos para decidir se um candidato D2D deveria se comunicar diretamente ou de modo convencional atravÃs da estaÃÃo rÃdio-base (eNB, do inglÃs Evolved Node B). Os resultados mostram que comunicaÃÃes D2D conseguem melhorar a eficiÃncia espectral do sistema e que a maioria dos ganhos pode ser alcanÃada agrupando de forma adequada os usuÃrios para compartilhar recursos baseando-se em projeÃÃes sucessivas e ortogonais, assim como combinando diferentes mÃtricas de compatibilidade espacial. AlÃm disso, nessa dissertaÃÃo eu argumento que tecnologias D2D podem ser usadas para aumentar ainda mais a eficiÃncia espectral e energÃtica se os parÃmetros chave dos algoritmos de RRM forem adequadamente estendidos para comunicaÃÃes D2D em mÃltiplos saltos. Especificamente, eu proponho um novo algoritmo distribuÃdo de controle de potÃncia baseado em maximizaÃÃo da utilidade que à capaz de equilibrar eficiÃncia espectral e energÃtica, enquanto leva em consideraÃÃo a seleÃÃo de modo e restriÃÃes na alocaÃÃo de recursos inerentes à integraÃÃo do ambiente celular-D2D. Os resultados numÃricos mostram que comunicaÃÃes D2D em mÃltiplos saltos combinadas com o algoritmo de controle de potÃncia proposto sÃo Ãteis nÃo apenas para colher os potenciais ganhos identificados na literatura, mas tambÃm para estender a cobertura de redes celulares.
The increasing demand for fast multimedia services and the scarcity of electromagnetic spectrum has motivated the research of technologies able to increase the capacity of wireless systems without requiring additional spectrum. In this context, Device-to-Device (D2D) communication represents a promising technology. By enabling direct and low-power communication among devices, D2D communication leads to an increased and intelligent spatial reuse of radio resources allowing to offload the data transport network. As a result, the overall system capacity and specially the spectral efficiency is increased; and the proximity between devices allows data transfer with low delays and high rates without requiring extra power from devicesâ batteries. However, in order to realize the potential gains of D2D communications as a secondary network of the cellular (primary) one, some key issues must be tackled. Assuming that the communicating devices are aware of each other, the actual link (channel) conditions must be evaluated. If beneficial, Radio Resource Management (RRM) techniques would be employed so that the co-channel interference caused in cellular devices would be mitigated. Such techniques may be summarized as: grouping, mode selection, and power control. In this thesis, I focus my attention on the RRM for D2D communications underlaying a Long Term Evolution (LTE)-like network, and the main RRM techniques to mitigate the co-channel interference. Aiming at the reduction of the intra-cell interference and at the improvement of spectral efficiency, I formulate a joint grouping and power allocation problem. However, due to its complexity I propose suboptimal methods to group cellular and D2D User Equipments (UEs) with the goal of minimizing intra-cell interference, taking into account spatial orthogonality between the UEs that share the same resources. In addition, I analyze methods to decide if D2D-capable UEs should communicate directly to one another or in the conventional way via the Evolved Node B (eNB). The results show that D2D communications can improve the spectral efficiency of the system and that most of this improvement can be achieved by suitably grouping the UEs for sharing resources based on successive orthogonal projections and matching different spatial compatibility metrics. Moreover, in this thesis I argue that D2D technology can be used to further increase the spectral and energy efficiency if the key D2D RRM algorithms are suitably extended to support network assisted multi-hop D2D communications. Specifically I propose a novel, distributed utility maximizing power control (PC) scheme that is able to balance spectral and energy efficiency while taking into account mode selection and resource allocation constraints that are important in the integrated cellular-D2D environment. The analysis and numerical results indicate that multi-hop D2D communications combined with the proposed PC scheme can be useful not only for harvesting the potential gains previously identified in the literature, but also for extending the coverage of cellular networks.
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15

Silva, Junior José Mairton Barros da. "Radio resource management for single and two-hop device-two-device communications." reponame:Repositório Institucional da UFC, 2014. http://www.repositorio.ufc.br/handle/riufc/11072.

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SILVA JUNIOR, J. M. B. Radio resource management for single and two-hop device-two-device communications. 2014. 77 f. Dissertação (Mestrado em Engenharia de Teleinformática) – Centro de Tecnologia, Universidade Federal do Ceará, Fortaleza, 2014.
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The increasing demand for fast multimedia services and the scarcity of electromagnetic spectrum has motivated the research of technologies able to increase the capacity of wireless systems without requiring additional spectrum. In this context, Device-to-Device (D2D) communication represents a promising technology. By enabling direct and low-power communication among devices, D2D communication leads to an increased and intelligent spatial reuse of radio resources allowing to offload the data transport network. As a result, the overall system capacity and specially the spectral efficiency is increased; and the proximity between devices allows data transfer with low delays and high rates without requiring extra power from devices’ batteries. However, in order to realize the potential gains of D2D communications as a secondary network of the cellular (primary) one, some key issues must be tackled. Assuming that the communicating devices are aware of each other, the actual link (channel) conditions must be evaluated. If beneficial, Radio Resource Management (RRM) techniques would be employed so that the co-channel interference caused in cellular devices would be mitigated. Such techniques may be summarized as: grouping, mode selection, and power control. In this thesis, I focus my attention on the RRM for D2D communications underlaying a Long Term Evolution (LTE)-like network, and the main RRM techniques to mitigate the co-channel interference. Aiming at the reduction of the intra-cell interference and at the improvement of spectral efficiency, I formulate a joint grouping and power allocation problem. However, due to its complexity I propose suboptimal methods to group cellular and D2D User Equipments (UEs) with the goal of minimizing intra-cell interference, taking into account spatial orthogonality between the UEs that share the same resources. In addition, I analyze methods to decide if D2D-capable UEs should communicate directly to one another or in the conventional way via the Evolved Node B (eNB). The results show that D2D communications can improve the spectral efficiency of the system and that most of this improvement can be achieved by suitably grouping the UEs for sharing resources based on successive orthogonal projections and matching different spatial compatibility metrics. Moreover, in this thesis I argue that D2D technology can be used to further increase the spectral and energy efficiency if the key D2D RRM algorithms are suitably extended to support network assisted multi-hop D2D communications. Specifically I propose a novel, distributed utility maximizing power control (PC) scheme that is able to balance spectral and energy efficiency while taking into account mode selection and resource allocation constraints that are important in the integrated cellular-D2D environment. The analysis and numerical results indicate that multi-hop D2D communications combined with the proposed PC scheme can be useful not only for harvesting the potential gains previously identified in the literature, but also for extending the coverage of cellular networks
O aumento da demanda por serviços ricos em multimídia e a escassez do espectro eletromagnético têm motivado a pesquisa de tecnologias capazes de aumentar a capacidade de sistemas sem fio sem requerer espectro adicional. Nesse contexto, comunicações Dispositivo-a-Dispositivo (D2D, do inglês Device-to-Device) representam uma tecnologia promissora. Ao permitir comunicação direta e de baixa potência entre os dispositivos, comunicações D2D levam a um maior e mais inteligente reuso dos recursos de rádio, permitindo um descongestionamento da rede de transporte de dados. Como resultado, a capacidade total do sistema e especialmente a eficiência espectral são aumentadas; e a proximidade entre os dispositivos permitem transferências de dados com baixo atraso e altas taxas de dados, sem requerer potência extra da bateria dos dispositivos. Entretanto, com o objetivo de tornar real os potenciais ganhos de comunicações D2D como uma rede secundária da celular (primária), algumas questões chave precisam ser controladas. Assumindo que os dispositivos se comunicando estão cientes um do outro, a condição do enlace (canal) deve ser avaliada. Caso seja benéfica, técnicas de Gestão de recursos de rádio (RRM, do inglês Radio Resource Management) são empregadas para que a interferência co-canal causada nos dispositivos celulares seja mitigada. Tais técnicas podem ser resumidas como: agrupamento, seleção de modo e controle de potência. Nessa dissertação, eu foco a minha atenção para RRM em comunicações D2D subjacentes a redes LTE, e para as principais técnicas de RRM para mitigar a interferência co-canal. Objetivando a redução da interferência intra-celular e na melhoria da eficiência espectral, eu formulo um problema conjunto de agrupamento e controle de potência. Entretanto, devido à sua complexidade eu proponho métodos sub-ótimos para agrupar usuários celulares e D2D com o objetivo de minimizar a interferência intra-celular, levando em conta a ortogonalidade espacial entre os usuários que compartilham o recurso. Além disso, eu analiso métodos para decidir se um candidato D2D deveria se comunicar diretamente ou de modo convencional através da estação rádio-base (eNB, do inglês Evolved Node B). Os resultados mostram que comunicações D2D conseguem melhorar a eficiência espectral do sistema e que a maioria dos ganhos pode ser alcançada agrupando de forma adequada os usuários para compartilhar recursos baseando-se em projeções sucessivas e ortogonais, assim como combinando diferentes métricas de compatibilidade espacial. Além disso, nessa dissertação eu argumento que tecnologias D2D podem ser usadas para aumentar ainda mais a eficiência espectral e energética se os parâmetros chave dos algoritmos de RRM forem adequadamente estendidos para comunicações D2D em múltiplos saltos. Especificamente, eu proponho um novo algoritmo distribuído de controle de potência baseado em maximização da utilidade que é capaz de equilibrar eficiência espectral e energética, enquanto leva em consideração a seleção de modo e restrições na alocação de recursos inerentes à integração do ambiente celular-D2D. Os resultados numéricos mostram que comunicações D2D em múltiplos saltos combinadas com o algoritmo de controle de potência proposto são úteis não apenas para colher os potenciais ganhos identificados na literatura, mas também para estender a cobertura de redes celulares
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16

Flovén, Karl Fredrik. "State management models impact on run-time performance in Single Page Applications." Thesis, KTH, Skolan för elektroteknik och datavetenskap (EECS), 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-277758.

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The choice of state management model, i.e. how the state is managed in an application, is an important part of application development. In this thesis, we investigate how run-time performance, more specifically scripting performance, is affected when managing a shared state using a relative state management model in comparison to using a global state management model, in a component-based Single Page Application. To compare the two state management models, two implementations of a simple application were made, with the same functionality, but managing application state in two different ways. Two experiments, each focusing on one application structure dimension, were done to compare the scripting performance of the implementations during state update. The results showed that the state management models do affect the scripting performance, but that it depends on the structure of the application. In the first experiment, the global state management model showed a much larger performance decrease in comparison to the relative state management model when increasing the amount of components dependent on the updating state. Observations of the reconciliation processes showed that the cause for the performance differences were due to unoptimized synchronous DOM mutations introduced by the components using the global state management framework. In the second experiment, the relative state management model showed a larger performance decrease for a deep component structure compared to the global state management model as the component tree depth increased, but in comparison to the previous experiment the difference was smaller. Taken together, the findings from this study suggests that scripting performance may be a factor to consider when choosing state management model for an application. However, the application structure, including the complexity of the application, impacts which state management model that is preferable and to what degree it affects the scripting performance, and thus the run-time performance.
Valet av tillståndsmodell, dvs. hur tillståndet hanteras i en applikation, är en viktig del av applikationsutveckling. I det här examensarbetet undersöker vi hur körtidens prestanda påverkas när man hanterar ett delat tillstånd med hjälp av en relativ tillståndsmodell jämfört med att använda en global tillståndsmodell, i en komponentbaserad ensideapplikation. För att jämföra de två tillståndsmodellerna gjordes två implementationer av en enkel applikation med samma funktionalitet, men som hanterar applikationstillstånd på två olika sätt. Två experiment som vardera fokuserar på en enda dimension av applikationsstrukturen gjordes för att jämföra skriptprestanda för implementeringarna under tillståndsuppdateringen. Resultaten visade att tillståndsmodellerna påverkar skriptprestandan, men att det var beroende på applikationens struktur. I experiment 1 visade den globala tillståndsmodellen en mycket större prestandaminskning jämfört med den relativa tillståndsmodellen när många komponenter var beroende av tillståndet. Observationer av ”reconciliation”-processerna visade att orsaken till prestandaskillnaderna berodde på icke-optimiserade synkrona DOM-mutationer introducerade av komponenterna som använde det globala tillståndshanteringsramverket. I experiment 2 visade den relativa tillståndsmodellen emellertid en sämre prestandaminskning för en djup komponentstruktur än den globala tillståndsmodellen, men jämfört med föregående det experimentet var skillnaden liten. Sammantaget tyder resultaten från den här studien på att körningsprestanda kan vara en faktor att beakta när man väljer tillståndsmodell för en applikation. Applikationsstrukturen, inklusive applikationens komplexitet, påverkar emellertid vilken tillståndsmodell som är att föredra och i vilken utsträckning den påverkar skriptprestandan och därmed realtidsprestandan.
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17

Jones, Craig Allen McGee. "Business Strategies for ASEAN's Single Window in Southeast Asia." Thesis, Walden University, 2016. http://pqdtopen.proquest.com/#viewpdf?dispub=10248949.

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Since the Asian Financial Crisis of 1997 and the Global Financial Crisis of 2007, members of the Association of Southeast Asia Nations (ASEAN) have sought to strengthen ASEAN’s regional economies through a digital trade project known as the ASEAN Single Window (ASW). The purpose of this case study was to explore the business strategies that multinational organizational leaders used to overcome business barriers while implementing ASEAN partnership contracts and ASW region-wide projects. This study may be unique in that, at the time of this research, there was no published study in which researchers had explored a single window for a vast, multination geographical region. Data collection was done via in-depth interviews with ASW executives, studying online ASW-related conferences, and examining relevant strategic documents. A 6-phase thematic analysis process based on methodological triangulation corroborated the data and addressed construct validity through data familiarization, generating initial coding, categorizing codes and searching for themes, breaking codes into subcategories, data reduction and defining and naming themes, and report generation. The 4 strategic themes that emerged were business models and processes, public–private partnerships, project management methodologies, and overlapping themes. The findings offer insights into ways to overcome the ASW’s constraints and barriers. These strategic themes developed into a list of critical success factors and a summary list of principle business strategies and best practices. The implication for social change is a regionally collaborative trading environment providing potential economic options that not only impede the deterioration of the regional social fabric but support new opportunities such as trade liberalization and economic stability.

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18

Devlin, James Francis. "Single competitive markets and competitive advantage in retail financial services." Thesis, University of Nottingham, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.320024.

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19

Asokan, Aravind E. M. Massachusetts Institute of Technology. "System architecture for single-pilot aircraft in commercial air transport operations." Thesis, Massachusetts Institute of Technology, 2016. http://hdl.handle.net/1721.1/106240.

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Thesis: S.M. in Engineering and Management, Massachusetts Institute of Technology, School of Engineering, System Design and Management Program, Engineering and Management Program, 2016.
Cataloged from PDF version of thesis.
Includes bibliographical references (pages 161-165).
Commercial flight operations have seen the consistent reduction of flight crew from five to two over the past several decades. As technology improves and airplanes become increasingly capable of flying themselves, this trend of crew reduction can be expected to continue. Single pilot operations in commercial air transport presents a range of benefits and challenges, some of which are explored in this thesis. While there has been some discussion of the concept of having a single pilot operate a complex aircraft, including an announcement by a regional jet manufacturer of their intent to realize the concept in the first half of the next decade, it is seen that there is a need to define architectures and compare them in different operational contexts. This examination of architectures is conducted by identifying high level concepts or architectural decisions mentioned in the literature reviewed thus far, and creating an architectural space containing the possible constrained combinations of architectural divisions. The architectural space is represented as a safety versus cost trade space, wherein different architectural combinations are compared against present day operations. An attempt is also made to identify possible off nominal situations and the ability of the different architectures to deal with them. Safety is studied primarily as a function of pilot workload, which is identified by studying the movement of flight operations processes from the first officer, who is eliminated. Cost in this context is regarded as a combination of acquisition costs and operating costs. The former is quantified by identifying likely changes in system complexity, while the latter is a combination of crew and new infrastructure costs. Moving to SPO requires taking into account the operating context. The analysis indicates that different classes of aircraft - widebodies, narrowbodies, and regional jets - have different levels of benefits and costs in moving to SPO. Capabilities of automation needs to improve drastically before the second human in the flight deck can be replaced, and this is borne out by the dominance of human centered concepts in the trade space. The analysis also indicates that regional aircraft may be prime candidates to move to SPO first, as most regional architectures generate positive savings.
by Aravind Asokan.
S.M. in Engineering and Management
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20

Klosterhalfen, Steffen [Verfasser]. "Multiple sourcing in single- and multi-echelon inventory systems / Steffen Klosterhalfen." Mannheim : Universitätsbibliothek Mannheim, 2010. http://d-nb.info/1008073946/34.

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21

Mengesha, Toia Thompson. "The major supporting mechanisms for successful single working mothers." Thesis, Pepperdine University, 2016. http://pqdtopen.proquest.com/#viewpdf?dispub=10102367.

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Single mothers are commonly characterized as low-income welfare recipients. In 2010, close to 30% of single mother households were below the poverty line (U.S. Census Bureau, 2010a) conversely leaving 70% of single mothers above the poverty line. Being a married working mother is challenging and comes with the need of several supports. With the growing divorce rate and the introduction of women choosing to become single mothers, the numbers of single working mothers are growing rapidly. In order to be a successful single mother certain factors need to be accounted for. This study focused on single mothers who are in high profile professional positions and looked at what supports it took; both internally and externally, to sustain their situations. Some highly regarded, prestigious positions that fell into this category include, but are not limited to, school administrators, writers/authors, successful entrepreneurs, attorneys, doctors, professors, upper level managers/supervisors, and executive directors. Also, this study looked at character traits of the identified mothers to see if there was an inner predisposition that positions them to be able to thrive in difficult situations. The findings suggest that in order for single mothers to succeed they need to establish a strong support network, have a flexible career and demonstrate strong leadership skills ranging from a Lazier Fair approach to a transformative one with a strong mentoring influence and affinity.

The results from this study indicate that this population identified as resilient, passionate, and focused about their professional and personal lives. These single mothers are motivated by a high level of passion for both their work, and parenting their children, including providing a comfortable lifestyle and rich involvement in their children’s lives. Their use of support varied and formed a naturally occurring continuum spanning from “no support”, to “support is essential”. This population reported their relational style either increased or decreased in their willingness to seek out and accept assistance from others. In leadership style, this group of single mother professionals scored extremely high in having tendencies towards Transformational leadership and surprisingly, even higher in having tendencies towards Laissez-faire leadership.

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22

Efthymiou, Marina. "Challenges in aviation governance : implementation of Single European Sky and EU Emissions Trading Scheme." Thesis, University of West London, 2016. https://repository.uwl.ac.uk/id/eprint/3239/.

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Traffic growth, capacity constraints, climate change and the necessity to develop a more cost efficient system led to an ambitious initiative to reform the architecture of airspace management. This initiative, launched by the European Commission (EC), is called Single European Sky (SES). The four Key Performance Areas (KPAs) of SES are environment; cost efficiency; capacity; and safety. In the environment KPA Performance Indicators for Air Navigation Services Providers (ANSPs) are established to ensure that improvement in sustainability is achieved. In addition, aviation is included in the European Union's Emission Trading Scheme (EU ETS): the EC sets limits on CO2 emissions and provides economic incentives to airlines to reduce emissions by establishing a market-based trading system. EU-ETS can be used to simultaneously promote economic efficiency and achieve environmental goals on a sustainable basis. The PhD research examines the existence of cancel-out effects between supply-led, i.e. SES, and demand-led management, i.e. EU ETS, policies by following a holistic approach. Environmental economics theory and industrial economics are applied to identify factors that have a significant influence on the two policies. Interestingly, and in spite of common objectives, the two schemes are governed by different bodies, which may fail to streamline their communication process. Hence, the PhD thesis also addresses the issue of governance and its possible failure regarding the full implementation and efficiency of the schemes. From a methodological perspective, Delphi is conducted in two rounds to encapsulate policy complexity at an in-depth level. The target population comprises stakeholders involved in SES and EU ETS. To select candidates purposive and snowball sampling was used. Thus, the sample consists of 39 senior managers/experts from Civil Aviation Authorities; ANSPs; aviation-related organisations and institutions; and airlines. Based on the results of the Delphi and building on its theoretical background, the PhD thesis then develops a conceptual model to address governance failure, thus effectively linking supply- to demand-oriented aviation policies in a holistic manner.
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23

Ruehl, Stefan T. [Verfasser]. "Mixed-Tenancy Systems - A hybrid Approach between Single and Multi-Tenancy / Stefan T. Ruehl." München : Verlag Dr. Hut, 2014. http://d-nb.info/1055863656/34.

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24

Mladenov, Vladislav [Verfasser], Jörg [Gutachter] Schwenk, and Felix [Gutachter] Freiling. "On the security of single sign-on / Vladislav Mladenov ; Gutachter: Jörg Schwenk, Felix Freiling." Bochum : Ruhr-Universität Bochum, 2017. http://d-nb.info/1142001725/34.

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25

Mladenov, Vladislav [Verfasser], Jörg [Gutachter] Schwenk, and Felix C. [Gutachter] Freiling. "On the security of single sign-on / Vladislav Mladenov ; Gutachter: Jörg Schwenk, Felix Freiling." Bochum : Ruhr-Universität Bochum, 2017. http://nbn-resolving.de/urn:nbn:de:hbz:294-54255.

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26

Ekofo, Angela N. "The Effect of Single Audit Findings on the Auditee's Federal Grant Awards." Thesis, Capella University, 2018. http://pqdtopen.proquest.com/#viewpdf?dispub=10843410.

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The Single Audit Act (SAA) of 1984, as amended in 1996, encourages sound financial management by those who receive federal funds. Single audits are designed to help the federal government protect and safeguard federal funds by exercising proper oversight of non-federal entities’ expenditures of federal grant monies. Consistent with the provisions of the SAA, auditors function as chief agents of federal control to enhance accountability between the federal government and the nonfederal recipients of federal grant awards. Auditors’ reporting of single audit findings provides the opportunity to take actions that hold recipients of federal grant awards accountable for spending of federal funds. The study consisted of an examination of auditors’ perceptions, based on lived experiences, of how the reporting of single audit findings affects non-federal entities’ ability to receive federal grant awards subsequent to the issuance of single audit reports in accordance with the Office of Management and Budget’s (OMB) Circular A-133 and Uniform Guidance. The researcher used qualitative research method and Moustakas’ transcendental phenomenology research design to purposefully select a sample of 20 certified public accountants with at least 3 years of experience in single audits from the population of licensed certified public accountants who performed single audits in the state of New Mexico and were approved by the New Mexico State Auditor Office as independent public accountants for governmental entities in New Mexico. The researcher used the modified Van Kaam analysis method to analyze data collected in the interviews of research participants. This study sought to understand how auditors experience the effectiveness of the SAA as an accountability mechanism for the federal government to oversee expenditures of federal grant awards by non-federal grantees and found that federal grant making agencies do not affect consequences to non-compliant recipients of federal grant awards in response to reported single audit findings.

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27

Schackert, Gabriele, A. Steinmetz, U. Meier, and Stephan B. Sobottka. "Surgical Management of Single and Multiple Brain Metastases: Results of a Retrospective Study." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2014. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-135123.

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Background: Advancement in diagnosis and treatment of various cancer entities led to an increasing incidence of brain metastases in the last decades. Surgical excision of single and multiple brain metastases is one of the central treatment options beside radiotherapy, radiosurgery and chemotherapy. To evaluate the benefit of surgery with/without whole-brain radiation therapy (WBRT) in single brain metastases and the influence of image guidance for brain metastases resection, 104 patients were retrospectively evaluated for post-operative outcome. Patients and Methods: Between January 1994 and December 1999 150 patients were surgically treated for brain metastases at the Department of Neurosurgery at the Technical University of Dresden. Outcome could be evaluated in 104 patients with respect to special treatment strategies and survival time (69 patients with single and 35 patients with multiple lesions). Results: Most metastases originated from primary lung and breast tumours. Karnofsky performance score improved on average by 10 after surgery. The extent of the extracerebral tumour burden was the main influence on survival time. Patients’ age below 70 years was combined with prolonged survival time (median survival time, MST: 4.5 months vs. 7 months). Patients with solitary cerebral metastasis had a MST of 16 months, whereas patients with singular lesions had a MST of 7 and 4 months, depending on the extent of the extracerebral tumour growth. Additional post-operative WBRT with 30 Gy was combined with an increase in MST in patients with single brain metastasis (surgery + WBRT: MST 13 months; surgery only: MST 8 months). In addition, the rate of recurrent cerebral tumour growth was distinctly higher in the non-WBRT group. Neuronavigation did not significantly improve post-operative survival time. In 80% of patients extracerebral tumour growth limited patients’ survival. Conclusion: Surgery is an initial treatment option in patients with single and multiple brain metastases especially with large tumours (> 3 cm). Post-operative WBRT seems to prolong survival time in patients with single brain metastasis by decreasing local and distant tumour recurrence. Neuronavigational devices permit a targeted approach. Multiple processes can be extirpated in one session without prolonging the hospitalisation time for the patient. However, neuronavigational devices cannot assure complete tumour resection
Hintergrund: Fortschritte in der Diagnostik und Therapie von Krebserkrankungen haben in den letzten Jahrzehnten zu einer steigenden Inzidenz von Hirnmetastasen geführt. Die chirurgische Entfernung singulärer und multipler Hirnmetastasen stellt neben Strahlentherapie, Radiochirurgie und Chemotherapie eine zentrale Therapieoption dar. Um die Wertigkeit der chirurgischen Behandlung von singulären Hirnmetastasen mit/ohne Ganzhirnbestrahlung (WBRT) und den Einfluss der Neuronavigation zu untersuchen, wurden 104 Patienten retrospektiv bezüglich ihres postoperativen «Outcomes» untersucht. Patienten und Methoden: Zwischen Januar 1994 und Dezember 1999 wurden 150 Patienten mit Hirnmetastasen in der Klinik für Neurochirurgie der Technischen Universität Dresden operiert. Das «Outcome » von 104 Patienten konnte bezüglich der verschiedenen Behandlungsstrategien und Überlebenszeit ausgewertet werden (69 Patienten mit singulären und 35 Patienten mit multiplen Läsionen). Ergebnisse: Die meisten Metastasen stammen von Lungen- und Mammakarzinomen. Nach operativer Behandlung verbesserte sich der Karnofsky-Index um durchschnittlich 10. Das Ausmaß der extrazerebralen Tumormasse stellte die Haupteinflussgröße für die Überlebenszeit dar. Ein Lebensalter unter 70 Jahren war mit einer verlängerten Überlebenszeit verbunden (mittlere Überlebenszeit, MÜZ: 4,5 Monate vs. 7 Monate). Patienten mit solitären Metastasen hatten eine MÜZ von 16 Monaten, während Patienten mit singulären Läsionen, abhängig vom Ausmaß des extrazerebralen Tumorwachstums, eine MÜZ von 7 bzw. 4 Monaten aufweisen. Eine zusätzliche postoperative WBRT mit 30 Gy zeigte eine Verbesserung der MÜZ bei Patienten mit singulären Hirnmetastasen (OP + WBRT: MÜZ 13 Monate; OP allein: MÜZ 8 Monate). Gleichzeitig war die Rate der zerebralen Tumorrezidive in der Nicht-WBRT Gruppe deutlich höher. Die postoperative Überlebenszeit wurde durch Verwendung der Neuronavigation nicht signifikant verbessert. In 80% der Patienten limitierte das extrazerebrale Tumorwachstum die Überlebenszeit. Fazit: Bei Patienten mit singulären und multiplen Metastasen stellt die initiale chirurgische Tumorentfernung eine Therapiealternative insbesondere bei großen Tumoren (> 3 cm) dar. Eine postoperative WBRT scheint die ÜLZ der Patienten mit singulären Hirnmetastasen durch Begrenzung des Auftretens von Rezidivtumoren zu verlängern. Die Neuronavigation erlaubt eine gezielte Zugangsplanung. Multiple Prozesse können einzeitig operiert werden, ohne dass die postoperative stationäre Verweildauer verlängert wird. Hingegen wird eine radikale Tumorentfernung durch Verwendung der Neuronavigation nicht gewährleistet
Dieser Beitrag ist mit Zustimmung des Rechteinhabers aufgrund einer (DFG-geförderten) Allianz- bzw. Nationallizenz frei zugänglich
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28

Cave, Kelly A. "Evaluation of the effectiveness of BMP's for urban stormwater management: single-event simulation." Thesis, Virginia Polytechnic Institute and State University, 1986. http://hdl.handle.net/10919/101316.

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A desk top model has been developed for "user-friendly" application in personal computers to simulate watershed response to a rainfall event in terms of runoff generation and to estimate nonpoint source pollutant loadings associated with the storm event. The algorithms utilize the SCS TR - 55 method for calculating runoff hydrographs for a single storm event. A methodology has been adapted to generate pollutographs which combines the SCS Type II rainfall distribution with the standard pollutant washoff equations. In addition, this model allows for the design, evaluation, and cost effectiveness analysis of various best management practice (BMP) measures as tools to manage stormwater quantity and quality.
M.S.
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29

Schackert, Gabriele, A. Steinmetz, U. Meier, and Stephan B. Sobottka. "Surgical Management of Single and Multiple Brain Metastases: Results of a Retrospective Study." Karger, 2001. https://tud.qucosa.de/id/qucosa%3A27621.

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Background: Advancement in diagnosis and treatment of various cancer entities led to an increasing incidence of brain metastases in the last decades. Surgical excision of single and multiple brain metastases is one of the central treatment options beside radiotherapy, radiosurgery and chemotherapy. To evaluate the benefit of surgery with/without whole-brain radiation therapy (WBRT) in single brain metastases and the influence of image guidance for brain metastases resection, 104 patients were retrospectively evaluated for post-operative outcome. Patients and Methods: Between January 1994 and December 1999 150 patients were surgically treated for brain metastases at the Department of Neurosurgery at the Technical University of Dresden. Outcome could be evaluated in 104 patients with respect to special treatment strategies and survival time (69 patients with single and 35 patients with multiple lesions). Results: Most metastases originated from primary lung and breast tumours. Karnofsky performance score improved on average by 10 after surgery. The extent of the extracerebral tumour burden was the main influence on survival time. Patients’ age below 70 years was combined with prolonged survival time (median survival time, MST: 4.5 months vs. 7 months). Patients with solitary cerebral metastasis had a MST of 16 months, whereas patients with singular lesions had a MST of 7 and 4 months, depending on the extent of the extracerebral tumour growth. Additional post-operative WBRT with 30 Gy was combined with an increase in MST in patients with single brain metastasis (surgery + WBRT: MST 13 months; surgery only: MST 8 months). In addition, the rate of recurrent cerebral tumour growth was distinctly higher in the non-WBRT group. Neuronavigation did not significantly improve post-operative survival time. In 80% of patients extracerebral tumour growth limited patients’ survival. Conclusion: Surgery is an initial treatment option in patients with single and multiple brain metastases especially with large tumours (> 3 cm). Post-operative WBRT seems to prolong survival time in patients with single brain metastasis by decreasing local and distant tumour recurrence. Neuronavigational devices permit a targeted approach. Multiple processes can be extirpated in one session without prolonging the hospitalisation time for the patient. However, neuronavigational devices cannot assure complete tumour resection.
Hintergrund: Fortschritte in der Diagnostik und Therapie von Krebserkrankungen haben in den letzten Jahrzehnten zu einer steigenden Inzidenz von Hirnmetastasen geführt. Die chirurgische Entfernung singulärer und multipler Hirnmetastasen stellt neben Strahlentherapie, Radiochirurgie und Chemotherapie eine zentrale Therapieoption dar. Um die Wertigkeit der chirurgischen Behandlung von singulären Hirnmetastasen mit/ohne Ganzhirnbestrahlung (WBRT) und den Einfluss der Neuronavigation zu untersuchen, wurden 104 Patienten retrospektiv bezüglich ihres postoperativen «Outcomes» untersucht. Patienten und Methoden: Zwischen Januar 1994 und Dezember 1999 wurden 150 Patienten mit Hirnmetastasen in der Klinik für Neurochirurgie der Technischen Universität Dresden operiert. Das «Outcome » von 104 Patienten konnte bezüglich der verschiedenen Behandlungsstrategien und Überlebenszeit ausgewertet werden (69 Patienten mit singulären und 35 Patienten mit multiplen Läsionen). Ergebnisse: Die meisten Metastasen stammen von Lungen- und Mammakarzinomen. Nach operativer Behandlung verbesserte sich der Karnofsky-Index um durchschnittlich 10. Das Ausmaß der extrazerebralen Tumormasse stellte die Haupteinflussgröße für die Überlebenszeit dar. Ein Lebensalter unter 70 Jahren war mit einer verlängerten Überlebenszeit verbunden (mittlere Überlebenszeit, MÜZ: 4,5 Monate vs. 7 Monate). Patienten mit solitären Metastasen hatten eine MÜZ von 16 Monaten, während Patienten mit singulären Läsionen, abhängig vom Ausmaß des extrazerebralen Tumorwachstums, eine MÜZ von 7 bzw. 4 Monaten aufweisen. Eine zusätzliche postoperative WBRT mit 30 Gy zeigte eine Verbesserung der MÜZ bei Patienten mit singulären Hirnmetastasen (OP + WBRT: MÜZ 13 Monate; OP allein: MÜZ 8 Monate). Gleichzeitig war die Rate der zerebralen Tumorrezidive in der Nicht-WBRT Gruppe deutlich höher. Die postoperative Überlebenszeit wurde durch Verwendung der Neuronavigation nicht signifikant verbessert. In 80% der Patienten limitierte das extrazerebrale Tumorwachstum die Überlebenszeit. Fazit: Bei Patienten mit singulären und multiplen Metastasen stellt die initiale chirurgische Tumorentfernung eine Therapiealternative insbesondere bei großen Tumoren (> 3 cm) dar. Eine postoperative WBRT scheint die ÜLZ der Patienten mit singulären Hirnmetastasen durch Begrenzung des Auftretens von Rezidivtumoren zu verlängern. Die Neuronavigation erlaubt eine gezielte Zugangsplanung. Multiple Prozesse können einzeitig operiert werden, ohne dass die postoperative stationäre Verweildauer verlängert wird. Hingegen wird eine radikale Tumorentfernung durch Verwendung der Neuronavigation nicht gewährleistet.
Dieser Beitrag ist mit Zustimmung des Rechteinhabers aufgrund einer (DFG-geförderten) Allianz- bzw. Nationallizenz frei zugänglich.
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30

Van, Name Judith A. "Financial management practices of married single earner and dual earner families in Delaware." Diss., Virginia Tech, 1991. http://hdl.handle.net/10919/39990.

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31

Vanderwaal, Curtis Jon. "The design and development of a time management group intervention for collegiated single parents." Case Western Reserve University School of Graduate Studies / OhioLINK, 1995. http://rave.ohiolink.edu/etdc/view?acc_num=case1061831726.

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32

Goldstein, Lisa 1967. "The strategic management of environmental issues : a case study of Kodak's single-use cameras." Thesis, Massachusetts Institute of Technology, 1994. http://hdl.handle.net/1721.1/12065.

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33

Ravichandran, Akshay Giridhar. "Single System Image in a Linux-based Replicated Operating System Kernel." Thesis, Virginia Tech, 2015. http://hdl.handle.net/10919/56654.

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Recent trends in the computer market suggest that emerging computing platforms will be increasingly parallel and heterogeneous, in order to satisfy the user demand for improved performance and superior energy savings. Heterogeneity is a promising technology to keep growing the number of cores per chip without breaking the power wall. However, existing system software is able to cope with homogeneous architectures, but it was not designed to run on heterogeneous architectures, therefore, new system software designs are necessary. One innovative design is the multikernel OS deployed by the Barrelfish operating system (OS) which partitions hardware resources to independent kernel instances that communicate exclusively by message passing, without exploiting the shared memory available amongst different CPUs in a multicore platform. Popcorn Linux implements an extension of the multikernel OS design, called replicated-kernel OS, with the goal of providing a Linux-based single system image environment on top of multiple kernels, which can eventually run on different ISA processors. A replicated-kernel OS replicates the state of various OS sub-systems amongst kernels that cooperate using message passing to distribute or access various services uniquely available on each kernel. In this thesis, we present mechanisms to distribute signals, namespaces, inter-thread synchronizations and socket state replication. These features are built on top of the existing messaging layer, process or thread migration and address space consistency protocol to provide the application with an illusion of single system image and developers with the SMP programming environment they are most familiar with. The mechanisms developed were unit tested with micro benchmarks to validate their correctness and to measure the gained speed up or additive overhead. Real-world applications were also used to benchmark the developed mechanisms on homogeneous and on heterogeneous architectures. It is found that the contributed Popcorn synchronization mechanism exhibits overhead compared to vanilla Linux on multicore as Linux's equivalent mechanisms are tightly coupled with underlying hardware cache coherency protocol, therefore, faster than software message passing. On heterogeneous platforms, the developed mechanisms allow to transparently map each portion of the application to the processor in the platform on which the execution is faster. Optimizations are recommended to further improve the performance of the proposed synchronization mechanism. However, optimizations may force the userspace application and libraries to be rewritten in order to decouple their synchronization mechanisms of shared memory, therefore losing transparency, which is one of the primary goals of this work.
Master of Science
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34

Knight, Amy K. "Beyond Leveraged Purchasing| Using Strengthened Buyer/Supplier Relationships to Accomplish Sustainable Strategic Sourcing and Smarter Single Source Acquisitions." Thesis, The George Washington University, 2016. http://pqdtopen.proquest.com/#viewpdf?dispub=10251669.

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Strategic sourcing has long been utilized by organizations to maximize budget and supply chain efficiency, usually through leveraged buying, but also through the formation of strategic partnerships with suppliers. When considering leveraged buys, the strategic sourcing process begins with a spend analysis, and the data obtained during the analysis is used by stakeholders to begin defining requirements. Traditional spend analysis restricts the data used in the spend analysis process to basic transactional information, and does not considered corporate social responsibility objectives as part of the strategic sourcing process. This research modifies an existing spend analysis process framework, and applies the framework in a case study that uses additional data points to identify opportunities to allow an organization to simultaneously achieve both strategic purchasing and social responsibility objectives. The study also examines strategic healthcare purchasing in a single source environment, and combines best practices developed using decentralized purchasing strategies by healthcare facilities and successful buyer-supplier relationships from multiple industries to create a process map for hospital systems transitioning to strategic centralized purchasing models. Systems engineering frameworks, process modeling, regression analysis, and cross functional process maps are used in this study’s analysis. (Abstract shortened by ProQuest.)

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Nguyen, Thi Ngoc Lan, and Kanjanapalakun Nanmanas. "Management Accounting and Entrepreneurship in a New Economy Firm : Litium-A single case study." Thesis, Jönköping University, Jönköping International Business School, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-903.

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The importance of entrepreneurship has been widely acknowledged by many scholars, however, there is an argument that entrepreneurship tends to pose a unique dilemma with management accounting – a part of management control in organizations. The purpose of this paper is to find a solution for the apparent conflict between management accounting and entrepreneurship through a single case study of Litium – a new economy firm operating in information technology industry. The study of Litium reveals that a simple and solid management accounting is an effective way in order to keep management accounting in harmony with entrepreneurial spirit. This finding goes in line with the suggestion of loosely coupled management control in new economy firms by Lukka and Granlund (2003).

The paper reviews various relevant literatures so as to build a collected framework about management accounting in new economy firms. The framework then provides a guideline for empirical findings and analysis part. We acknowledged that the studies of Lukka and Granlund (2003), Granlund and Taipaleenmaki (2005), Lovstal (2001) and Morris, Allen, Schindehutte, and Avila (2006) are very useful for studying management accounting in new economy firms where entrepreneurship is highly emphasized. In addition, life-cycle perspective is also valuable to understand thoroughly the practice of management accounting in new economy firms. In accordance with the topic and the purpose of our case study, we recognized that qualitative research method is most suitable. Moreover, the interview – one type of qualitative methods – was chosen as a main tool for colleting data in our study since it can provide the authors with important insights into a situation and use-ful shortcuts to the prior history of the situation

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Mostafa, Alyaa. "Evaluation of single incision mini-slings in surgical management of female stress urinary incontinence." Thesis, University of Aberdeen, 2014. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=217882.

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Objectives: To compare single incision mini-slings (SIMS) versus standard mid-urethral sling (SMUS) in the surgical management of female stress urinary incontinence (SUI) with regards; efficacy, safety and cost-effectiveness. Methods: A multicentre randomised controlled trial (RCT) comparing SIMS-Ajust® with SMUS-TVT-OTM (1-year follow-up) was performed. In addition, a systematic review and meta-analysis of RCTs comparing SIMS versus SMUS (1-3 years follow-up) was performed, incorporating the results of the RCT. Both studies assessed post-operative pain, time to return to normal activities and work, patient-reported and objective cure rates, peri-operative complications and impact on pre-operative urgency, women's quality of life (QoL), sexual function and cost effectiveness. Results: For the RCT, 137 women were randomised (SIMS-Ajust® [n=69] vs. TVT-OTM [n=68]). The SIMS Ajust® group had significantly lower post-operative pain-profile within the first four weeks (p <0.001). There were no significant differences in patient-reported success rate (p >0.999), objective success rate (p >0.999) or re-operation rates (p= 0.721) at 1-year follow-up. For the systematic review, 670 articles were identified, and 26 RCTs (n=3308 women) were included. After excluding RCTs evaluating TVT-SecurTM (recently withdrawn from clinical practice), there were no significant differences between SIMS and SMUS in patient-reported cure rates (RR 0.94, 95% CI 0.88, 1.00) and objective cure rates (RR 0.98, 95% CI 0.94, 1.01) at a mean follow-up of 18.6 months. SIMS had significantly lower post- 1 operative pain scores (WMD -2.94; 95% CI -4.16, -1.73), and earlier return to normal activities and work (WMD -5.08; 95% CI -9.59, -0.56; and WMD -7.20; 95% CI -12.43, -1.98, respectively). Conclusion: Adjustable anchored SIMS-Ajust® appears to have more favourable recovery, pain and cost effectiveness outcomes than SMUS-TVT-OTM, whilst having similar effectiveness outcomes, at 1-year follow-up. Generally, SIMS appear to have equivalent outcomes compared with SMUS at a mean follow-up of 18-months, in terms of patient-reported cure, objective cure and impact on women's QoL and sexual function. Consequently, SIMS represent a promising group of procedures in the treatment of women with SUI, and merits further research especially in terms of longer term outcomes.
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Wang, Peijia, and Siqi Liu. "From Green Purchasing to Green Supply Chain Management : a single-case study of Guitang." Thesis, Högskolan i Gävle, Avdelningen för Industriell utveckling, IT och Samhällsbyggnad, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-15152.

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Sustainable development is an eternal topic and the enterprise’ sustainability provides the answer. Furthermore, emerging market’s sustainable development is frequently mentioned recently due to the serious pollution and waste due to the blind pursuit of higher GDP (Colm, 2012). This paper aims to find out the drivers and barriers of green supply chain management (GSCM) implementation; and figure out how to strengthen the relationship between green purchasing (GP) and GSCM based on the single-case study of Guitang Group. Combining the qualitative and quantitative method, we try to explore and describe the influence on GSCM development caused by the specific background of China. Based on the suggestions of how to strengthen the relationships between GP and GSCM, it will be more efficient for us to find a suitable way for manufacturing industrial companies in China to achieve the path from green purchasing to green supply chain management.
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38

Nortje, Marc Boydell. "Single pin versus multiple pin fixation in the management of slipped upper femoral epiphysis." Master's thesis, University of Cape Town, 2009. http://hdl.handle.net/11427/2846.

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39

Alfano, Edward J. (Edward James). "Reducing complexity In biomanufacturing operations through single-use assemblies." Thesis, Massachusetts Institute of Technology, 2012. http://hdl.handle.net/1721.1/73402.

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Thesis (M.B.A.)--Massachusetts Institute of Technology, Sloan School of Management; and, (S.M.)--Massachusetts Institute of Technology, Dept. of Chemical Engineering; in conjunction with the Leaders for Global Operations Program at MIT, 2012.
Cataloged from PDF version of thesis.
Includes bibliographical references (p. 57-58).
Novartis Vaccines and Diagnostics operates a centralized equipment cleaning and preparation suite at a vaccine production facility in Marburg, Germany. The ~100 pieces of multi-use stainless steel, glass, and plastic equipment prepared at this centralized pretreatment suite all need to be disassembled, cleaned, reassembled, sterilized, shipped, and tracked. This highly complex cycle is problematic because of the coordination cost, possibility of assembly errors, and lack of operational flexibility. Additionally, the multi-use assemblies were designed as long as 20 years ago, and newer, more reliable alternatives exist. The goal of this project is to evaluate the hypothesis that replacing multi-use assemblies with single-use assemblies will reduce production risk and costs of goods sold of vaccines by reducing operational complexity. To understand the impact of adopting single-use assemblies, the one-time cost of switching (e.g. regulatory filings, validation studies, operational costs) are weighted against the potential for operational savings and risk reduction or transfer to vendors. The current-state variable costs and risks are evaluated with a cost model that accounts for variable equipment cost, operator cost, autoclave cost, and washer costs. Future state variable costs are determined through a request for proposal ("RFP") process with vendors. Novartis Vaccines and Diagnostics had previously conducted failure mode and effect analyses ("FMEA's"), and the critical and potentially critical risks affected by adopting single-use assemblies were reassessed. It is possible to reduce the complexity of pretreatment operations with single-use assemblies. Adopting the four of the assemblies studied in this project would reduce the number of components processed in a year by 40% and the number of unique components by 10%. Many critical or potentially critical risks, such as labeling, assembly, sterilization, transportation, and storage of assemblies will be transferred to third-party vendors. Because these vendors specialize in the production of single-use assemblies, they can invest in more costly capital equipment and processes such as higher class clean rooms and gamma sterilization. Some single-use assemblies will have a lower variable operating cost, while others will increase operating costs. Thus, new assemblies fall into three categories in a decision making framework: 1) Reduced risk and cost, 2) Pay for risk reduction, and 3) Continue with current state. Assemblies in categories 1 and 2 should be modernized from multi-use to single-use, while assemblies in category 3 should remain multi-use.
by Edward J. Alfano.
S.M.
M.B.A.
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40

Markowitz, David Maxwell. "A unified approach to single machine scheduling : heavy traffic analysis of dynamic cyclic policies." Thesis, Massachusetts Institute of Technology, 1996. http://hdl.handle.net/1721.1/11040.

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41

Keller, Birgit [Verfasser], Udo [Gutachter] Buscher, Rainer [Gutachter] Lasch, and Udo [Akademischer Betreuer] Buscher. "The single row layout problem with clearances / Birgit Keller ; Gutachter: Udo Buscher, Rainer Lasch ; Betreuer: Udo Buscher." Dresden : Technische Universität Dresden, 2019. http://d-nb.info/1226901247/34.

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42

Nakagawa, Sage. "Payer source for single, elderly women in nursing homes." Thesis, California State University, Long Beach, 2013. http://pqdtopen.proquest.com/#viewpdf?dispub=1524144.

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This study seeks to determine the payer source for single, elderly women in nursing homes. By determining the payer source for single, elderly women, the next generation of women can prepare for high nursing home costs by saving earlier or investing in long-term care insurance. Studies have shown the primary payer sources for nursing home costs are Medicare and Medicaid. This study hypothesized single women, when compared to married women, would utilize Medicaid and welfare to pay for nursing home costs. Secondary data from the 2004 National Nursing Home Survey was extracted and analyzed for the aforementioned hypotheses. The analysis determined the primary payer sources for elderly women in nursing homes were self-pay and Medicaid. Marital status did not have an impact on the payer sources for single, elderly women in nursing homes when compared to married women.

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43

Gunnthorsdottir, Anna Heidi. "Determinants of cooperation and competition in single-level and multi-level interactive decision-making." Diss., The University of Arizona, 2001. http://hdl.handle.net/10150/290312.

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The common focus of the three studies in this dissertation is the tension between cooperative, efficiency-enhancing behaviors and the narrowly self-interested equilibrium behavior predicted by standard game theory. In recent years, the tenets of the latter have been challenged by empirical findings that indicate that humans are more cooperative than traditional normative theory predicts. Basic concepts and predictions of game theory and past research on cooperative tendencies are reviewed. The first experimental study here involves a two-person one-shot extensive-form trust game. The major finding is that the Mach-IV personality test can help screen reciprocators from non-reciprocators. In the second study, subjects in a standard voluntary Contribution Mechanism (VCM) are rematched at each trial. If rematched at random, contributions decline over rounds as in many other VCM experiments. If, however, subjects, without their knowledge, are rearranged into groups according to the amount of their contribution, contribution rates remain higher because cooperators do not get discouraged by free riders. This finding is accounted for by the goodwill accounting framework of McCabe and Smith (1999). In the third experimental study, a standard VCM is embedded in intergroup conflict as groups compete for a fixed prize that is divided among the members of the winning group, either equally or proportionally to individual members' contributions. A group's wining probability depends on how its public good contributions compare to the contributions of the competing group. Given specific parameterization, non-contribution in such a two-level interaction is no longer the dominant strategy, even though it would be in the corresponding one-level ACM. Further, equilibrium contributions are higher under proportional than under equal prize division. On the aggregate level, the data support equilibrium predictions, even though there is some evidence of over-contribution under group competition and individual contribution patterns are very idiosyncratic. A simple reinforcement learning model (See Roth and Erev, 1995) accounts well for the change in aggregate data over trials. The implications of all three studies are that cooperativeness can be enhanced by the means of screening, social structure and incentive schemes.
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Combs, Michael L. "Analysis of setup time reductions at NADEP, North Island, utilizing the SMED approach (Single-Minute-Exchange-of-Die)." Thesis, Monterey, California : Naval Postgraduate School, 1990. http://handle.dtic.mil/100.2/ADA238700.

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Thesis (M.S. in Management)--Naval Postgraduate School, June 1990.
Thesis Advisor(s): Trietsch, Dan. Second Reader: McMasters, Alan W. "June 1990." Description based on signature page as viewed on October 21, 2009. DTIC Identifier(s): Reduction, information exchange, production management, setup time, theses. Author(s) subject terms: SMED, production management, setup time, NADEP. Includes bibliographical references (p. 94-95). Also available in print.
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45

Ozbakir, Saffet Ilker. "A Heuristic Approach For The Single Machine Scheduling Tardiness Porblems." Master's thesis, METU, 2011. http://etd.lib.metu.edu.tr/upload/12613742/index.pdf.

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ABSTRACT A HEURISTIC APPROACH FOR THE SINGLE MACHINE SCHEDULING TARDINESS PROBLEMS Ö
zbakir, Saffet Ilker M.Sc., Department of Industrial Engineering Supervisor : Prof. Dr. Ö
mer Kirca September 2011, 102 pages In this thesis, we study the single machine scheduling problem. Our general aim is to schedule a set of jobs to the machine with a goal to minimize tardiness value. The problem is studied for two objectives: minimizing total tardiness value and minimizing total weighted tardiness value. Solving optimally this problem is difficult, because both of the total tardiness problem and total weighted tardiness problem are NP-hard problems. Therefore, we construct a heuristic procedure for this problem. Our heuristic procedure is divided to two parts: construction part and improvement part. The construction heuristic is based on grouping the jobs, solving these groups and then fixing some particular number of jobs. Moreover, we used three type improvement heuristics. These are sliding forward method, sliding backward method and pairwise interchange method. Computational results are reported for problem size = 20, 40, 50 and 100 at total tardiness problem and for problem size = 20 and 40 at total weighted tardiness problem. Experiments are designed in order to investigate the effect of three factors which are problem size, tardiness factor and relative range of due dates on computational difficulties of the problems. Computational results show that the heuristic proposed in this thesis is robust to changes at these factors.
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46

Pettersson, Anton. "Investing made easy : Make pension investment based on one single factor." Thesis, Jönköping University, Internationella Handelshögskolan, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-48565.

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As a part of the Swedish pension system all participants in the working population are given the control of an investment account, which is funded with their pension contributions. The purpose of the account is to allow everyone the possibility to tailor their pension investments in accordance with personal values about risk and expected returns. However, it is shown that many Swedish adults lack the knowledge needed to make informed financial decisions and are therefore at risk of hurting their pension when investing in these accounts. This thesis tries to identify whether a simple but effective investment criterion, namely the size of the management fee, can increase the probability of higher risk-adjusted returns for uninformed investors when participating in the Swedish pension plan. It uses the Graham-Harvey volatility matched approach to evaluate fund performance on an individual basis. The corresponding analysis is then conducted based on grouped statistics of the projected performance measures. The results indicate stronger risk-adjusted returns of low fee funds in two out of the three analyzed categories. Carhart computations of Jensen´s alpha is then used as a robustness check and it provides support for the results found using the Grayham-Harvey method. When testing for difference in performance using the entire sample, 1.2 percent higher risk-adjusted returns were concluded statistically significant in the sample of low fee funds.
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Zone, Douglas Davidson. "Simulation and optimization of dynamic resource allocation strategies in a single server queu[e]ing network." Thesis, Massachusetts Institute of Technology, 1990. http://hdl.handle.net/1721.1/14114.

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Thesis (M.S.)--Massachusetts Institute of Technology, Sloan School of Management, 1990.
Title as it appears in the M.I.T. Graduate List, June 1990: Performance analysis and optimization queing [sic] networks in a dynamic environment.
Includes bibliographical references (leaf 162).
by Douglas Davidson Zone.
M.S.
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48

Moore, S. "The nature of strategic group conversations : orientations, functions and intertextuality in a single case setting." Thesis, Cranfield University, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.245418.

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49

Daborn, Cathryn Elizabeth. "The effect of a sustained upper limb neuroprovacation test on median nerve conduction and the role of neuroprovocation techniques in the management of carpal tunnel syndrome." Thesis, University of East Anglia, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.251633.

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50

Vestin, Alexander. "Smart manufacturing for the wooden single-family house industry." Licentiate thesis, Tekniska Högskolan, Jönköping University, JTH, Industriell produktutveckling, produktion och design, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-48249.

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To meet the demand of future building requirements, and to improve productivity and competitiveness, there is a need to modernize and revise the current practices in the wooden single-family house industry. In several other sectors, intensive work is being done to adapt to the anticipated fourth industrial revolution. The manufacturing industry has already begun its transformation with concepts such as smart manufacturing and Industry 4.0. So far, smart manufacturing has not been discussed to any significant extent for the wooden single-family house industry, even though it might be a way for this industry to improve productivity and competitiveness. The research presented in this thesis aims at increased knowledge about what smart manufacturing means for the wooden single-family house industry. This requires investigating what smart wooden house manufacturingis, what challenges that might be associated with it, and how smart wooden house manufacturing can be realized. At the core of this thesis is the conceptualization of smart wooden house manufacturing—when realized, it is expected to contribute to improve the competitiveness of the wooden single family house industry. The findings presented here are based on three Research Studies. Two studies were case studies within the wooden single-family house industry. The third study was a traditional literature review. The findings revealed two definitions and 26 components of smart wooden house manufacturing. At large, smart wooden house manufacturing emphasizes digital transformation with a focus on digital information flow, how to add information, information compilation, and information distribution between systems/programs and departments. Some of the challenges associated with smart wooden house manufacturing are, e.g. culture, competence and manual transfer of information between systems. The findings indicate similarities of smart wooden house manufacturing within certain components of industrialized house building and Industry 4.0, these components could enable the realization of smart wooden house manufacturing.
För att möta efterfrågan på framtida byggkrav och för att förbättra produktiviteten och konkurrenskraften finns det ett behov av att modernisera och revidera nuvarande tillvägagångssätt inom träsmåhusindustrin. I flera andra sektorer arbetas det intensivt med att anpassa sig till den förväntade fjärde industriella revolutionen. Tillverkningsindustrin har redan påbörjat sin omvandling med koncept som smart manufacturing och Industry 4.0. Hittills har smart manufacturing inte diskuterats i någon större utsträckning för träsmåhusindustrin, även om det kan vara ett sätt för denna industri att förbättra produktiviteten och konkurrenskraften. Forskningen som presenteras i denna avhandling syftar till ökad kunskap om vad smart manufacturing innebär för träsmåhusindustrin. Detta kräver undersökning av vad smart trähustillverkning är, vilka utmaningar som kan vara förknippade med det och hur smart trähustillverkning kan realiseras. Kärnan i denna uppsats är begreppsframställningen av smart trähustillverkning—när det realiserats förväntas det bidra till att förbättra konkurrenskraften för träsmåhusindustrin. Resultaten som presenteras här är baserat på tre forskningsstudier. Två studier var fallstudier inom träsmåhusindustrin. Den tredje studien var en traditionell litteraturstudie. Resultaten avslöjade två definitioner och 26 komponenter av smart träshustillverkning. Sammanfattningsvis betonar smart trähustillverkning digital transformation med fokus på digitalt informationsflöde, hur man lägger till information, sammanställning av information och informationsfördelning mellan system / program och avdelningar. Några av utmaningarna associerade med smart trähustillverkning är t.ex. kultur, kompetens och manuell överföring av information mellan system. Resultaten indikerar likheter mellan smart träshustillverkning inom vissa komponenter av industriellt husbyggande och Industry 4.0, dessa komponenter skulle kunna möjliggöra realiseringen av smart trähustillverkning.
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