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Strohkirch, Cornelis, and Marcus Österberg. "Effort distribution for the Small System Migration Framework." Thesis, KTH, Skolan för elektroteknik och datavetenskap (EECS), 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-258087.
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Performing a migration of a legacy system can often be a daunting task. However, there often comes a time where maintaining a legacy system is not profitable. At such a time, estimating how much effort is required to perform a migration can be vital for the legacy system holders. There is a lack of research that shows the effort distribution for migrations of small legacy systems.The contribution of this thesis is an effort distribution for a framework for migrations called Small System Migration Framework (SSMF) and SSMF. The purpose of the thesis is to evaluate how the effort is distributed over different activities when migrating a small legacy system. The goal of the thesis is to help provide a basis for the estimation process during migrations. This was done by documenting how effort is distributed over different activities contained in SSMF.This thesis takes an abductive approach, combining an inductive approach used in the creation of a framework and a deductive approach to document how effort was distributed during the migration. A framework was created using the literature study and this framework was used to conduct a migration.The result of this thesis was an updated framework and a table presenting the effort distribution of the migration. The framework showed factors that were influential when migrating the system. The effort distribution presents how effort is distributed over activities and shows which activities during the migration required more effort.Finally the thesis concludes that effort is highly centered around the preparation phase of the migration. Understanding legacy systems can be a challenge, lacking documentation and issues brought by the lack of maintenance results in high effort during this phase. Allocating more resources for the preparation phase and having access to people with experience during the preparation phase would likely make for a smoother transition with less unidentified problems appearing.<br>Att utföra en migration av ett ”legacy” system kan ofta vara en skrämmande uppgift. Det kommer dock ofta en tidpunkt då det inte längre är lönsamt att underhålla ett legacy system. Vid en sådan tidpunkt kan estimering av hur mycket insats som krävs för att utföra en migrering vara vital för ägarna av legacy systemet. Det finns en avsaknad av forskning som visar hur insats är fördelad för migrationer av små system.Bidraget av denna avhandling är ett ramverk för migrationer kallat Small System Migration Framework (SSMF) och en insats fördelning for SSMF. Ändamålet för avhandlingen är att evaluera hur insats är fördelad över olika aktiviteter vid migrering av små ”legacy” system. Målet med avhandlingen är att hjälpa förse en bas för estimeringsprocessen under migrering. Detta gjordes genom att dokumentera hur insats var fördelad över olika aktiviter i SSMF.Denna avhandling använde sig av ett abduktiv tillvägagångsätt, en kombination av ett induktivt tillvägagångssätt i skapandet av ett ramverk och ett deduktivt tillvägagångsätt i dokumenteringen av hur insats var fördelad under migrationen. En litteratur studie gjordes för att skapa ramverket och detta ramverk användes sedan för att göra en migrering.Resultatet av fallstudien var ett uppdaterat ramverk och en tabell som presenterar insatsfördelningen för en migrering. Ramverket visade faktorer som var inflytelserika vid migrering av systemet. Insatsfördelningen presenterade hur insats var fördelat mellan olika aktiviter och vilka aktiviteter som krävde mer insats under migreringen.Slutligen sammanfattar avhandlingen att insats är högt centrerad runt förberedelsefasen vid migrering. Att förstå legacy system kan vara en utmaning, bristande dokumentation och problem från bristande underhåll resulterar i hög insatsfördelning i denna fas. Allokering av mer resurser vid förberedelsefasen och att ha tillgång till personer med erfarenheter vid förberedelsefasen skulle troligen ge en mjukare övergång med mindre oidentifierade problem som visar sig.
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Chi, Jack. "Virtual Frameworks for Source Migration." Thesis, University of Waterloo, 2004. http://hdl.handle.net/10012/1112.
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<em>Virtual Frameworks</em> for source migration is a methodology to extract classes and interfaces from one or more frameworks used by an application. After migration, a new set of frameworks called virtual frameworks can replace the original frameworks used. The classes and interfaces extracted are used to create a proxy layer for these new frameworks. The application then depends on this proxy layer, and through it the new frameworks, rather than on the original frameworks. A combination of three patterns: Bridge, Adapter, and Proxy are used in these new frameworks. By doing so the changes made to the application source code are minimized during migration.
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Kaplan, Halil. "A Migration Management Framework Proposal For Cobol/cics Based Mainframes." Master's thesis, METU, 2010. http://etd.lib.metu.edu.tr/upload/12611504/index.pdf.
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Today, mainframes contain a considerable portion of business applications worldwide. It is estimated that the current inventory of production COBOL running on mainframes is 150 to 200 billion lines of code. Despite the efforts to change within the mainframe environment, these mainframes, nowadays, face major problems for host organizations due to a combined set of financial, business related, technical and organizational problems. Moreover, the factors like diminishing resources (COBOL programmers), lack of documentation, inability to integrate with other systems, increasing maintenance costs, etc. have caused the organizations search for migration solutions. To overcome this problem within the context of modernization, over the years several main migration approaches that ranges from simple screen scraping methods to complete re-write of applications or re-hosting of platforms have been developed.
To contribute to the solution of this overall problem, this thesis proposes a methodology framework specifically for the COBOL/CICS based mainframes. The research studies in this topic within this field are mainly focused on the technical aspects whereas our concentration is covering not only that but the other essential aspects of the problem domain. These are organizational view, project management view and process view. Within the thesis study, a special interest is given to the modernization strategy selection among migration, rewrite, packaged and do-nothing alternatives. Experimental results are also provided within the thesis to prove the usability of the approach for this selection.
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Garrick, Catherine Lesley. "A channels framework for the study of skilled international migration." Thesis, University of Glasgow, 1991. http://theses.gla.ac.uk/6625/.
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Recent studies have identified a fundamental change in the character of much international migration. Skilled migrants have become a major component of most population flows and a majority in some cases. New forms of international labour migration and new historical and geographical contexts of international skill transfer, therefore require new frameworks for analysis. The main thrust of this research is to apply, extend and adapt a `migration channels' framework within the specific geographical context of Scotland's skilled international migration system. The concept of migration channels is founded on the observation that fewer and fewer international migrants themselves directly obtain jobs, work permits or residence visas. Increasingly, international skill transfers are regulated and manipulated by intermediary agencies. Identification and analysis of migration channels is therefore important since they play a key role in explaining firstly, which persons from the large pool of potential migrants are selected for migration, and, secondly, how a highly skilled international migration system is controlled and directed. A main aim of this research is to identify and understand the international migration processes operating in the Scottish context of skilled international migration. These processes are examined in relation to the differential selectivity and `control' each represents, with regard to the characteristics of the migrants involved with them, and the characteristics of their migration history. The importance of the concept of career and career advancement for explanation of skilled international migration is examined, in relation to respondents involved with each channel.
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Alkhateeb, Ali. "Libyan Detention Centers : Libya’s Legal and Regulatory Framework on Migration." Thesis, Umeå universitet, Juridiska institutionen, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-165275.
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Walid, Rohaimi. "Software Evolution in the context of .Net Framework." Thesis, Jönköping University, School of Engineering, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-902.
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<p>This paper discusses the process of software evolution and especially software migration in the context of .NET Technologies. Actually most of the companies that uses legacy systems implemented with procedural languages as C, Visual Basic and so on, meet some problems when new requirement specifications have to be integrated.</p><p>One possibility to deal with this situation is to choose a good migration strategy from these legacy systems towards new Object Oriented design.</p><p>There are some migration processes that enable the fulfilment of this task but most of the time theses processes cannot be applied directly without any modification.</p><p>This report presents a migration strategy and migration process applied for a real case of an application in a company. The New Object Oriented design of the application and the result are discussed in the following sections of this document.</p>
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Plazaola, Prado Leonel. "An information system migration framework for the electricity industry control centers." Licentiate thesis, KTH, Electrical Systems, 2003. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-1613.
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<p>The Electricity Industry Reforms (EIR) is a worldwidephenomenon that is inducing an intensive business orientedcontext in the organization, processes and functions of theElectricity Industry (EI). The electric power grid is nowtreated as the electricity market, the consumer as thecustomer, the power system activities are related to marketactors (i.e. generators, distributors and retailers) and theElectricity Industry Control Centers (EICC) provide theessential coordination and economic trade functions andtransactions.</p><p>The EICC are looking for solutions to introduce, amongstothers, emerging information processes in the business orientedcontext with all the Electricity Industry actors without losingthe technical reliability of the EI. The EIR is delineated as amajor change on the traditional EI relying heavily oninformation exchange amongst the market actors.</p><p>In the Central American countries, these EIR started around1996. The EICC in this region are facing the demanded changeswith information legacy systems, in operation long time beforethe EIR and considered already obsolete.</p><p>This thesis exploresand summarizes, as a researchcontribution, the main problems at the EICCs in CentralAmerica, in managing the incorporation of emerging informationproc-esses.</p><p>An Information System Migration Framework (ISMF) for theEICC is proposed as a re-search contribution and solution tothe problems identified. The ISMF here presented provides a setof steps and guidelines to follow for managing any emerginginformation processes in a systematic, feasible and reliableway. The ISMF is a continuous description of emerginginformation processes, risk assessments, requirementelicitation and specifica-tions with traceable and incrementalimplementations without completely replacing the system. TheISMF has as fundamental characteristic that provides a feasibleview of the current operation of the EICC, a continuous anditerative process of controlled changes and a systematicprocess to update the EICC operation model with a set of stepsthat are implementation independent, technology independent,process ori-ented and user centered.</p><p>The ISMFs feasibility, replicability and useracceptance has partially tested at the EICC in El Salvador andNicaragua.</p><p><b>Key words:</b>Electricity Industry, Electricity IndustryReforms, Electricity Industry Control Centers, InformationSystem Migration, Information Systems Modeling andRequirements, Case Studies in the Electricity Industry inCentral America.</p>
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Zhu, Jiedan. "An Autonomic Framework Supporting Task Consolidation and Migration in the Cloud Environment." The Ohio State University, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=osu1310758418.
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Ukwuegbu, Bernard. "THE JUDEO-CHRISTIAN REDEMPTIVE HISTORY: AN ALTERNATIVE FRAMEWORK FOR THE MIGRATION DEBATE." Bulletin of Ecumenical Theology, 2006. http://digital.library.duq.edu/u?/bet,2929.
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Song, Lina. "Rural-urban labour migration in China : the institutional framework, incentives, determinants and processes." Thesis, University of Oxford, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.264919.
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Ruangsiri, Yarika. "Essays on migration and the role of government in a Harris-Todaro framework." Thesis, University of Nottingham, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.403554.
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Leonard, Sarah. "The European Union and the 'securitization'of asylum and migration : Beyond the Copenhagen school's framework." Thesis, Aberystwyth University, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.521110.
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Opara-Martins, Justice. "A decision framework to mitigate vendor lock-in risks in cloud (SaaS category) migration." Thesis, Bournemouth University, 2017. http://eprints.bournemouth.ac.uk/29907/.
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Cloud computing offers an innovative business model to enterprise IT services consumption and delivery. However, vendor lock-in is recognised as being a major barrier to the adoption of cloud computing, due to lack of standardisation. So far, current solutions and efforts tackling the vendor lock-in problem have been confined to/or are predominantly technology-oriented. Limited studies exist to analyse and highlight the complexity of vendor lock-in problem existing in the cloud environment. Consequently, customers are unaware of proprietary standards which inhibit interoperability and portability of applications when taking services from vendors. The complexity of the service offerings makes it imperative for businesses to use a clear and well understood decision process to procure, migrate and/or discontinue cloud services. To date, the expertise and technological solutions to simplify such transition and facilitate good decision making to avoid lock-in risks in the cloud are limited. Besides, little research investigations have been carried out to provide a cloud migration decision framework to assist enterprises to avoid lock-in risks when implementing cloud-based Software-as-a-Service (SaaS) solutions within existing environments. Such decision framework is important to reduce complexity and variations in implementation patterns on the cloud provider side, while at the same time minimizing potential switching cost for enterprises by resolving integration issues with existing IT infrastructures. Thus, the purpose of this thesis is to propose a decision framework to mitigate vendor lock-in risks in cloud (SaaS) migration. The framework follows a systematic literature review and analysis to present research findings containing factual and objective information, and business requirements for vendor-neutral interoperable cloud services, and/or when making architectural decisions for secure cloud migration and integration. The underlying research procedure for this thesis investigation consists of a survey based on qualitative and quantitative approaches conducted to identify the main risk factors that give rise to cloud computing lock-in situations. Epistemologically, the research design consists of two distinct phases. In phase 1, qualitative data were collected using open-ended interviews with IT practitioners to explore the business-related issues of vendor lock-in affecting cloud adoption. Whereas the goal of phase 2 was to identify and evaluate the risks and opportunities of lock-in which affect stakeholders’ decision-making about migrating to cloud-based solutions. In synthesis, the survey analysis and the framework proposed by this research (through its step-by-step approach), provides guidance on how enterprises can avoid being locked to individual cloud service providers. This reduces the risk of dependency on a cloud provider for service provision, especially if data portability, as the most fundamental aspect, is not enabled. Moreover, it also ensures appropriate pre-planning and due diligence so that the correct cloud service provider(s) with the most acceptable risks to vendor lock-in is chosen, and that the impact on the business is properly understood (upfront), managed (iteratively), and controlled (periodically). Each decision step within the framework prepares the way for the subsequent step, which supports a company to gather the correct information to make a right decision before proceeding to the next step. The reason for such an approach is to support an organisation with its planning and adaptation of the services to suit the business requirements and objectives. Furthermore, several strategies are proposed on how to avoid and mitigate lock-in risks when migrating to cloud computing. The strategies relate to contract, selection of vendors that support standardised formats and protocols regarding data structures and APIs, negotiating cloud service agreements (SLA) accordingly as well as developing awareness of commonalities and dependencies among cloud-based solutions. The implementation of proposed strategies and supporting framework has a great potential to reduce the risks of vendor lock-in.
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Bartels, Peer. "A parallel transformations framework for cluster environments." Thesis, De Montfort University, 2011. http://hdl.handle.net/2086/5336.
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In recent years program transformation technology has matured into a practical solution for many software reengineering and migration tasks. FermaT, an industrial strength program transformation system, has demonstrated that legacy systems can be successfully transformed into efficient and maintainable structured C or COBOL code. Its core, a transformation engine, is based on mathematically proven program transformations and ensures that transformed programs are semantically equivalent to its original state. Its engine facilitates a Wide Spectrum Language (WSL), with low-level as well as high-level constructs, to capture as much information as possible during transformation steps. FermaT’s methodology and technique lack in provision of concurrent migration and analysis. This provision is crucial if the transformation process is to be further automated. As the constraint based program migration theory has demonstrated, it is inefficient and time consuming, trying to satisfy the enormous computation of the generated transformation sequence search-space and its constraints. With the objective to solve the above problems and to extend the operating range of the FermaT transformation system, this thesis proposes a Parallel Transformations Framework which makes parallel transformations processing within the FermaT environment not only possible but also beneficial for its migration process. During a migration process, many thousands of program transformations have to be applied. For example a 1 million line of assembler to C migration takes over 21 hours to be processed on a single PC. Various approaches of search, prediction techniques and a constraint-based approach to address the presented issues already exist but they solve them unsatisfactorily. To remedy this situation, this dissertation proposes a framework to extend transformation processing systems with parallel processing capabilities. The parallel system can analyse specified parallel transformation tasks and produce appropriate parallel transformations processing outlines. To underpin an automated objective, a formal language is introduced. This language can be utilised to describe and outline parallel transformation tasks whereas parallel processing constraints underpin the parallel objective. This thesis addresses and explains how transformation processing steps can be automatically parallelised within a reengineering domain. It presents search and prediction tactics within this field. The decomposition and parallelisation of transformation sequence search-spaces is outlined. At the end, the presented work is evaluated on practical case studies, to demonstrate different parallel transformations processing techniques and conclusions are drawn.
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Hanák, Tomáš. "Migrační framework v systému SAP." Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2018. http://www.nusl.cz/ntk/nusl-385950.
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The goal of this diploma thesis is to analyze process of migration data within the scope of SAP systems. Based on this analysis suitably desing and implement migration framework that will be used for migration of data between SAP systems. Entire migration framework and migration proces is built on technological platform SAP NetWeaver and is implemented in programming language ABAP. Functionality of the framework is presented by the case study that is represented by proper data set.
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Weisser, Reinhard Alexander [Verfasser]. "Personality and migration : a study of decision-making processes in a geo-referenced framework / Reinhard Alexander Weisser." Hannover : Technische Informationsbibliothek (TIB), 2017. http://d-nb.info/1149833882/34.
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Weisser, Reinhard A. [Verfasser]. "Personality and migration : a study of decision-making processes in a geo-referenced framework / Reinhard Alexander Weisser." Hannover : Technische Informationsbibliothek (TIB), 2017. http://d-nb.info/1149833882/34.
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Nyende, Keith Mark. "A PLAUSIBILITY PROBE OF THE RELATIONSHIP BETWEEN LOCAL INTEGRATION AND REFUGEE RELATED VIOLENCE. : Cases from countries piloting the Comprehensive Refugee Response Framework in Africa." Thesis, Malmö universitet, Institutionen för globala politiska studier (GPS), 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:mau:diva-45611.
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In this thesis, the author attempts to establish whether there is evidence supportive of an implicit postulation in scholarship on refugee local integration suggesting a relationship between refugee local integration and refugee related violence. Employing integrated education service as a proxy for refugee local integration, the thesis carries a plausibility probe of a hypothesis stating that “Refugee local integration provides avenues for interdependent interactions that contribute to the mitigation of refugee related violence”. The hypothesis is constructed with the aid of scholarship on intergroup relations, particularly: social identity theory and realistic group theory. To carry out the plausibility probe, the author employs the case study method of Structured Focused Comparison to compile and analyse research data on the cases of CRRF implementing countries, Kenya and Uganda, that is later compared. The thesis concludes that there is evidence indicative of a relationship between local integration and refugee related violence. However, its only through further studies, disaggregating the various components of local integration and refugee related violence, that the afore mentioned relation can be confirmed.
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Creswick, Helen Emma. "'Women under the radar' : the intersection of migration and domestic violence explored through the framework of '(un)deservingness'." Thesis, University of Nottingham, 2017. http://eprints.nottingham.ac.uk/41494/.
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Victims of domestic violence may commonly be constructed as ‘deserving’ of state support, however the intersection of migration and domestic violence complicates such matters, often rendering migrant women with an irregular immigration status as ‘undeserving’. This thesis bridges the gap between literatures on migration and domestic violence by using the framework of ‘(un)deservingness’ to explore the lives of women with an irregular immigration status who experience domestic violence. Interviews were conducted with women with an irregular immigration status, primarily focusing on those who overstay their visas, as well as professionals who provide support to women. Drawing on interview data, the thesis explores the nuanced ways in which the intersection of migration and domestic violence plays out in the lives of women. It considers how abusive partners use the label and political context around having an irregular immigration status in the UK, as a tool to exacerbate the domestic violence. By focusing on lived experiences, the study also draws attention to women’s fears in managing the complexity around holding this immigration status in their daily lives. Moreover, the thesis explores the structural violence and other barriers which this sub-group of migrant women encounter when seeking support, which is often shaped by their social position and the nature of their immigration status, particularly for those who have No Recourse to Public Funds (NRPF). The NRPF label signals that the state construes such women as ‘undeserving’, and this has very real consequences particularly in the context of domestic violence.
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Lugo, Brunilda. "Correlation Analysis of Climatic Variables, Migration and Dengue Cases in Southeast Florida." ScholarWorks, 2015. http://scholarworks.waldenu.edu/dissertations/1698.
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Dengue fever is a debilitating, viral, mosquito-borne disease occurring in tropical and subtropical areas in the world. The majority of dengue cases in the United States were acquired in endemic areas by travelers or immigrants. However, in recent years, autochthonous (locally acquired) dengue cases have been diagnosed in Florida. The purpose of this study was to find an association between potential risk factors and the expansion of dengue fever in the United States. Guided by the eco-bio-social framework, which offers a broad assessment of risk factors for the illness, a retrospective design was used with archival data to correlate changes in climatic variables and imported dengue cases with autochthonous dengue cases in Southeast Florida from 1980 to 2013. A Spearman correlation indicated weak correlations between temperature and autochthonous dengue cases (rs = .999, p = 000) and imported dengue cases with autochthonous dengue cases (rs = .162, p = 000). A negative binomial multivariate regression was used to analyze the expansion of dengue to each monthly unit of temperature, rainfall, and imported dengue cases over 34 years. The results indicated that temperature (IRR = 2.198; 95% CI [1.903, 2.538]) and precipitation (IRR = .991; 95% CI [.988, .994]) were predictors for the geographic expansion of dengue fever in Southeast Florida. The positive social changes include the use of the results to develop an understanding of how climatic variables and migration may influence the expansion of dengue fever to nonendemic regions. The results can be used by public health authorities to address risk factors and to formulate evidence-based decisions in regard to prevention and education concerning dengue fever.
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Yates, Christian. "Comparing stochastic discrete and deterministic continuum models of cell migration." Thesis, University of Oxford, 2011. http://ora.ox.ac.uk/objects/uuid:6f9cb70e-937c-441f-83c3-50e37e1cb420.
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Multiscale mathematical modelling is one of the major driving forces behind the systems biology revolution. The inherently interdisciplinary nature of its study and the multiple spatial and temporal scales which characterise its dynamics make cell migration an ideal candidate for a systems biology approach. Due to its ease of analysis and its compatibility with the type of data available, phenomenological continuum modelling has long been the default framework adopted by the cell migration modelling community. However, in recent years, with increased computational power, complex, discrete, cell-level models, able to capture the detailed dynamics of experimental systems, have become more prevalent. These two modelling paradigms have complementary advantages and disadvantages. The challenge now is to combine these two seemingly disparate modelling regimes in order to exploit the benefits offered by each in a comprehensive, multiscale equivalence framework for modelling cell migration. The main aim of this thesis is to begin with an on-lattice, individual-based model and derive a continuum, population-based model which is equivalent to it in certain limits. For simple models this is relatively easy to achieve: beginning with a one-dimensional, discrete model of cell migration on a regular lattice we derive a partial differential equation for the evolution of cell density on the same domain. We are also able to simply incorporate various signal sensing dynamics into our fledgling equivalence framework. However, as we begin to incorporate more complex model attributes such as cell proliferation/death, signalling dynamics and domain growth we find that deriving an equivalent continuum model requires some innovative mathematics. The same is true when considering a non-uniform domain discretisation in the one-dimensional model and when determining appropriate domain discretisations in higher dimensions. Higher-dimensional simulations of individual-based models bring with them their own computational challenges. Increased lattice sites in order to maintain spatial resolution and increased cell numbers in order to maintain consistent densities lead to dramatic reductions in simulation speeds. We consider a variety of methods to increase the efficiency of our simulations and derive novel acceleration techniques which can be applied to general reaction systems but are especially useful for our spatially extended cell migration algorithms. The incorporation of domain growth in higher dimensions is the final hurdle we clear on our way to constructing a complex discrete-continuum modelling framework capable of representing signal-mediated cell migration on growing (possibly non-standard) domains in multiple dimensions.
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Louisfrema, Wilfired. "Caractérisation des oxydes nanoporeux contenant des ions lourds en milieu aqueux." Thesis, Paris Sciences et Lettres (ComUE), 2016. http://www.theses.fr/2016PSLEE055/document.
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Les aluminosilicates poreux cristallins tels que les zéolithes cationiques de type faujasite sont largement étudiés en raison de leurs propriétés d’adsorption, d’échange ionique et de catalyse, ce qui leurs valent d’être engagées dans de nombreuses applications industrielles, qui font intervenir de plus en plus de cations multivalents (détergents/ adoucissants, craquage catalytique, décontamination,...). Ces différentes applications industrielles ont en commun les propriétés d’adsorption, résultant d’une part de la taille de leurs pores du même ordre de grandeur que les espèces introduites, et d’autre part de leur composition chimique qui conduit à des charges de charpente, à l’origine de sites de forte interaction ou de répulsion localisés. Dans ces applications, les zéolithes sont hydratées. L’eau est associée aux processus mis en jeu et influence ainsi les autres propriétés du matériau. La modélisation moléculaire est un outil de choix pour prédire et comprendre les propriétés microscopiques du matériau hydraté, qui sont difficilement accessibles expérimentalement. Ce travail de modélisation porte plus précisément sur le comportement des cations multivalents dans les matériaux zéolithiques hydratés, en collaboration avec des expérimentateurs. Notre étude sur une zéolithe faujasite Y a permis tout d’abord de clarifier la migration des cations sodium au cours de la déshydratation, et de prédire la localisation cationique dans le matériau hydraté en présence d’ions bivalents. De plus, nous avons montré qu’il était possible de rationaliser conjointement la migration des cations et les déformations structurales dans la faujasite au cours de l’adsorption d’eau. À cet effet, nous avons développé une méthode d’analyse pour la localisation cationique. La bonne performance d’un champ de force polarisable démontrée au cours de ce travail ouvre la voie à l’étude de la dynamique globale du système, en permettant le suivi de la migration cationique simultanément à la déformation de la charpente. A plus long terme, cette approche pourra être étendue à d’autres ions multivalents d’intérêt (terres rares, éléments f, ...)<br>Porous crystalline aluminosilicates such as cationic zeolites, are widely studied because of their adsorption, ion exchange and catalytic properties, which explain their use in many industrial applications. Examples of the latter, which involve in particular multivalent cations, include detergents/softeners, catalytic cracking, or decontamination. Such industrial applications of zeolites all exploit their adsorption properties, which vary as a function of the pore size, comparable to the adsorbing molecules, or chemical composition, which results in charges within the framework, and in turn strong binding or repulsive sites. Importantly, in such applications zeolites are hydrated. Water is involved in the microscopic processes and thus influences all properties of the material. Molecular modeling is a weapon of choice to predict and understand the microscopic properties of the hydrated material, which are difficult to access experimentally. More precisely, the present modeling work deals with the behavior of multivalent cations in hydrated zeolites, in collaboration with experimentalists. Our study on zeolite Y faujasite first allowed us to clarify the migration of sodium cations upon dehydration and to predict the cation localisation in the hydrated material in the presence of divalent cations. Furthermore, we rationalized the coupled migration of cations and deformation of the framework upon water adsorption. To this end, we have developed a new method for the analysis of cation localization. The good performance of a polarizable force field demonstrated here paves the way for the study of the dynamics of the whole system, following in particular the simultaneous migration of cations and deformation of the framework. Such an approach could be later extended to other multivalent ions of industrial interest (rare Earths, f-block elements, ...)
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Nefes, Ebrar. "“Among other things, that is what I choose to do” Understanding Migration Motivations of Highly Skilled Youth from Turkey by Looking at Capabilities and Aspirations." Thesis, Linköpings universitet, Institutionen för kultur och samhälle, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-166759.
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Rosvall, Viktor. "Examine .NET Core as a development platform for Monitor ERP System AB." Thesis, Mittuniversitetet, Institutionen för informationssystem och –teknologi, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:miun:diva-39330.
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The objective of this study has been to examine the portability of Moni- tor ERP System AB’s existing .NET Framework codebase to .NET Core. The study has been conducted by examining the portability of Monitor’s projects by using Microsoft’s .NET Portability Analyzer and visualizing the dependencies of projects by using AsmSpy to gain an understanding of what order projects need to be ported. An examination of used third-party libraries has also been conducted to see which libraries are not compatible with .NET Core. And an attempt to port Monitor’s root solution has been made as a proof-of-concept and to make test and build duration compar- isons between the ported solution and the old solution. The .NET Porta- bility Analyzer reported that 19 projects aren’t 100% compatible with .NET Core (+ Windows Compatibility Pack) where some projects have one miss- ing API call while others have many more. The third-party library examina- tion showed that two libraries are not compatible with .NET Core, the first is Dynamsoft Dynamic .NET TWAIN SDK which can probably be replaced with VintaSoft Twain .NET SDK, and SAP SQL Anywhere which doesn’t have a direct replacement. The results of the comparison show that test duration speeds improved on average by 22.5% with a peak of 67.6%, and build duration differences were negligible. Porting to .NET Core will not be easy, but if fixes for the 19 incompatible Monitor projects are completed and a replacement for SQL Anywhere can be found, then Monitor ERP System AB can make a successful port to .NET Core.
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CAVALCANTE, Filipe Neves. "Listas usadas como conjuntos: um estudo através de ferramenta de reescrita." Universidade Federal de Campina Grande, 2017. http://dspace.sti.ufcg.edu.br:8080/jspui/handle/riufcg/718.
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Previous issue date: 2017<br>Java Collections Framework (JCF) oferece um conjunto de Tipos Abstratos de Dados (TADs) na linguagem Java, sendo um framework bastante utilizado. Entretanto, as particularidades de uso de cada coleção são negligenciadas em favor da praticidade, sendo muito comum, por exemplo, o uso de listas sem permitir repetições de elementos, como se fossem um TAD conjunto. Há abordagens semiautomáticas de correção desse tipo de problema, mas elas introduzem classes adaptadores ao código original, o que nem sempre é desejável. Já a Substituição Direta apenas troca uma chamada de método por outra(s) correspondente(s), realizando o mínimo de mudanças possíveis, parecendo ser uma opção melhor. Entretanto, ela é mais complexa, o que leva este trabalho a estudar as condições e consequências para que ela seja possível. Foram desenvolvidas transformações implementadas num ambiente de reescrita de programas, sendo estas testadas e analisadas por meio de um estudo de caso, a fim de verificar sua aplicabilidade, e também através de questionário destinado a programadores Java, que analisou a aceitabilidade das transformações em dois trechos de código. Como resultados do estudo de caso,tem-se a ocorrência de14% de projetos fazendo uso de listas atuando como conjuntos. E a ArrayList apresentou maior incidência (90%) já List ocorreu nos demais casos (10%). Em se tratando das avaliações realizadas pelos desenvolvedores Java no questionário, cerca de 45% dos participantes propuseram sugestões consideradas adequadas, de acordo com a API e JCF [1], para um trecho de código que utilizava o método add(E e) de List, e 25% deles para outro trecho que realizava uma chamada do método set(int index, E e). Com isso, percebe-se a relevância do problema, sendo necessário continuar desenvolvendo novas técnicas e ferramentas que façam um programa utilizar coleções de forma adequada, tornando-o mais legível e eficiente.<br>Java Collections Framework (JCF) offers a set of Abstract Data Types (ADTs) in the Java language, being a widely used framework. However, because particularities of each collection the usage are neglected in favor of practicality, beingvery common,for example, the use of lists without allowing repetitions of elements, as if they were a set ADT. There are semiautomatic approaches to correct this type of problem, but they insert adaptive classes to the original code, which is not always desirable. Direct substitution, however, only exchanges a method call for another(s) corresponding(s), making as few changes as possible, appearing to be a better option. However, it is more complex ,which leads this work to study the conditions and consequences to make it possible. It was developed transformations implemented in a program rewriting environment, which were tested and analyzed through a case study, anend to verify its application, and also through a questionnaire aimed at Java programmers, which analyzed the acceptability of transformations in two sections of code. Asacasestudy results, there is an occurrence of 14% of the works that make use of lists acting as sets. And an ArrayList presented higher incidence (90%) and List itself cases (10%). Regarding the revisions made by the Java developers in the questionnaire, about 45% of the participants proposed suggestions considered appropriate, according to an API and JCF [1], for a section of code that used the add (E e) method of List , And 25% of them for another section that performed a call of the method set (int index, E and). With this, we can see the relevance of the problem, being necessary to continue to develop new techniques and tools that will make a program using collection properly, making it more readable and efficient .
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Correia, Maria Inês Filipe. "A análise dos efeitos da crise das dívidas soberanas na migração do Sul para o Norte da Europa : o caso português." Master's thesis, Instituto Superior de Economia e Gestão, 2015. http://hdl.handle.net/10400.5/10665.
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Mestrado em Economia Internacional e Estudos Europeus<br>Esta dissertação faz a análise do efeito da crise das dívidas soberanas na emigração do sul para o norte da Europa, tendo em conta a especificidade do caso português entre 1999 e 2014. Apesar de a emigração fazer parte da história portuguesa, nunca se esperou que voltasse a repetir o cenário dos anos 60. Os novos emigrantes portugueses parecem ter melhores níveis de educação e estão preparados para viver durantes vários anos fora de Portugal. A análise macroeconómica consegue explicar o caminho percorrido por Portugal desde a entrada do euro, passando pela crise das dívidas soberanas e terminando em 2014. Os resultados nas correlações efetuadas parecem confirmar uma relação forte entre a emigração total e a taxa de desemprego. Já o contrário acontece para a taxa de crescimento do PIB per capita: existe uma relação bastante fraca entre esta variável e a emigração total.<br>This dissertation makes an analysis of the effect of the sovereign debt crisis in migration from south to northern Europe, taking into account the specificity of the Portuguese case between 1999 and 2014. Although emigration is part of Portuguese history, it was never expected to return to repeat the scenario of the 60s. The new Portuguese emigrants seem to have better levels of education and are prepared to live for several years outside of Portugal. Macroeconomic analysis can explain the path followed by Portugal since the euro entry, through the sovereign debt crisis and ending in 2014. The results of the performed correlations seem to confirm a strong relationship between total emigration and unemployment. But the opposite happens to the growth rate of GDP per capita: there is a weak relationship between this variable and the total emigration.
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Gerbais, Juliette. "Women Representation in Disaster Risk Reduction : A Critical Discourse Analysis of the UNDRR Frameworks." Thesis, Malmö universitet, Malmö högskola, Institutionen för globala politiska studier (GPS), 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:mau:diva-18446.
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While early relocation is not makeable, disaster risk reduction seems to be the most effective tool to decrease the impact of a disaster. This case study focuses on three UNDRR frameworks as they appear to be the greatest instance of international documents referring to disaster risk reduction (DRR). Especially, this research examines the representation of women within these frameworks and how their portrayal in DRR has changed over the last two decades. To do so, a critical discourse analysis of the three UNDRR frameworks is conducted. This study benefits from a social vulnerability approach and further engages with the Feminist Political Ecology theory. The analysis finds that even though women are increasingly represented in the frameworks, their roles as active participants remain negligible. Their knowledge and interest are still not recognised as valuable in DRR. Rather, women seem to be employed as tools to include more gender-sensitive programmes. This study recommends a greater and more complex emphasis on women in future DRR policies.
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Chen, Xin. "Energy efficient wired networking." Thesis, Queen Mary, University of London, 2015. http://qmro.qmul.ac.uk/xmlui/handle/123456789/7966.
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This research proposes a new dynamic energy management framework for a backbone Internet Protocol over Dense Wavelength Division Multiplexing (IP over DWDM) network. Maintaining the logical IP-layer topology is a key constraint of our architecture whilst saving energy by infrastructure sleeping and virtual router migration. The traffic demand in a Tier 2/3 network typically has a regular diurnal pattern based on people‟s activities, which is high in working hours and much lighter during hours associated with sleep. When the traffic demand is light, virtual router instances can be consolidated to a smaller set of physical platforms and the unneeded physical platforms can be put to sleep to save energy. As the traffic demand increases the sleeping physical platforms can be re-awoken in order to host virtual router instances and so maintain quality of service. Since the IP-layer topology remains unchanged throughout virtual router migration in our framework, there is no network disruption or discontinuities when the physical platforms enter or leave hibernation. However, this migration places extra demands on the optical layer as additional connections are needed to preserve the logical IP-layer topology whilst forwarding traffic to the new virtual router location. Consequently, dynamic optical connection management is needed for the new framework. Two important issues are considered in the framework, i.e. when to trigger the virtual router migration and where to move virtual router instances to? For the first issue, a reactive mechanism is used to trigger the virtual router migration by monitoring the network state. Then, a new evolutionary-based algorithm called VRM_MOEA is proposed for solving the destination physical platform selection problem, which chooses the appropriate location of virtual router instances as traffic demand varies. A novel hybrid simulation platform is developed to measure the performance of new framework, which is able to capture the functionality of the optical layer, the IP layer data-path and the IP/optical control plane. Simulation results show that the performance of network energy saving depends on many factors, such as network topology, quiet and busy thresholds, and traffic load; however, savings of around 30% are possible with typical medium-sized network topologies.
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Bilski, Mateusz. "Migration from blocking to non-blocking web frameworks." Thesis, Blekinge Tekniska Högskola, Institutionen för datalogi och datorsystemteknik, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-5932.
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The problem of performance and scalability of web applications is challenged by most of the software companies. It is difficult to maintain the performance of a web application while the number of users is continuously increasing. The common solution for this problem is scalability. A web application can handle incoming and outgoing requests using blocking or non-blocking Input/Output operation. The way that a single server handles requests affects its ability to scale and depends on a web framework that was used to build the web application. It is especially important for Resource Oriented Architecture (ROA) based applications which consist of distributed Representational State Transfer (REST) web services. This research was inspired by a real problem stated by a software company that was considering the migration to the non-blocking web framework but did not know the possible profits. The objective of the research was to evaluate the influence of web framework's type on the performance of ROA based applications and to provide guidelines for assessing profits of migration from blocking to non-blocking JVM web frameworks. First, internet ranking was used to obtain the list of the most popular web frameworks. Then, the web frameworks were used to conduct two experiments that investigated the influence of web framework's type on the performance of ROA based applications. Next, the consultations with software architects were arranged in order to find a method for approximating the performance of overall application. Finally, the guidelines were prepared based on the consultations and the results of the experiments. Three blocking and non-blocking highly ranked and JVM based web frameworks were selected. The first experiment showed that the non-blocking web frameworks can provide performance up to 2.5 times higher than blocking web frameworks in ROA based applications. The experiment performed on existing application showed average 27\% performance improvement after the migration. The elaborated guidelines successfully convinced the company that provided the application for testing to conduct the migration on the production environment. The experiment results proved that the migration from blocking to non-blocking web frameworks increases the performance of web application. The prepared guidelines can help software architects to decide if it is worth to migrate. However the guidelines are context depended and further investigation is needed to make it more general.
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Ataca, Ugaz May Lin, and Valer Valeria Galindo. "The hiring of foreign workers in Peru: Procedures and agreements subscribed by our country facilitating it." THĒMIS-Revista de Derecho, 2014. http://repositorio.pucp.edu.pe/index/handle/123456789/108493.
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Over the past years, our country has witnessed a great increase in the hiring of foreigners for work purposes. It is in this context that it becomes relevant what has been established by de Legislative Decree 689, the Act of Recruitment of Foreign Personnel.In the present article, the authors develop the legal framework of foreigner´s hiring in Peru, as well as its requirements, limits, migration procedures and its scope of application. A reference is also made to the International Covenants signed by our country regarding the topic. The authors conclude, however, that national regulation on the hiring of foreign personnel is insufficient and has alimited scope.<br>Durante los últimos años, nuestro país ha presenciado un incremento en el número deextranjeros contratados con fines laborales. Es en este contexto que resulta importante lo establecido por el Decreto Legislativo 689, Ley de Contratación de Personal Extranjero.En el presente artículo, las autoras desarrollan el marco legal de la contratación de extranjeros en el Perú, sus requisitos, limites, procedimiento migratorio y ámbitos de aplicación. Asimismo, se hace referencia a los convenios internacionales celebrados por nuestro país sobre la materia. Se llega a concluir, sin embargo, que la regulación nacional en materia laboral migratoria es insuficiente y sólo tieneun alcance parcial.
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Gemenne, François. "Environmental changes and migration flows : normative frameworks and policy responses." Paris, Institut d'études politiques, 2009. http://www.theses.fr/2009IEPP0015.
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Depuis quelques années, d’importants déplacements de populations sont régulièrement annoncés comme l’une des conséquences les plus dramatiques du changement climatique. Plusieurs dizaines de millions de personnes pourraient ainsi être contraintes à l’exil en raison des impacts du réchauffement global, selon les estimations alarmistes. Ces prédictions, pourtant, relèvent d’une logique largement déterministe, qui simplifie souvent la relation entre dégradation environnementale et migrations à une causalité directe, et néglige l’importance des cadres normatifs. Cette thèse prend le contre-pied de cette approche, et démontreque l’ampleur et la nature de ces flux migratoires ne dépendront pas uniquement des impacts du changement climatique, mais également – et surtout – des politiques qui seront mises en place pour limiter ces impacts et encadrer ces migrations. Au travers d'une approche constructiviste, la thèse se penche sur les réponses politiques apportées jusqu’ici aux mouvements de population provoqués par des dégradations environnementales. En particulier, elle examine l’émergence progressive de la question des « migrations environnementales » à l’agenda politique, et comment les politiques migratoires et environnementales ont évolué dans des sens différents pour traiter cette question. La traduction de ces politiques sur le terrain est examinée et comparée dans deux études empiriques: le déplacement massif de la population de La Nouvelle-Orléans suite à l’ouragan Katrina, et la migration progressive des habitants de Tuvalu, archipel du Pacifique Sud menacé par la montée des océans, vers la Nouvelle-Zélande<br>Massive population displacements are regularly forecast as one of the most dramatic consequences of climate change. The thesis shows that such an approch is overly deterministic, and argues that patterns of migration flows depend primarily on policy responses. In a constructivist approah, the research contends that the very conceptualisation of environmental migration, as a political construct, is contingent upon the normative frameworks and policy responses that aim to address it. These frameworks and responses are examined in two policy areas: migration policies and environmental policies. Two empirical studies, in New Orleans and Tuvalu, complement the analysis
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Raina, Ravi. "A systems perspective on cybersecurity in the cloud : frameworks, metrics and migration strategy." Thesis, Massachusetts Institute of Technology, 2016. http://hdl.handle.net/1721.1/107602.
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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.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (pages 119-124).<br>Cloud computing represents the next generation of disruptive technologies in computing. However, there are several barriers to massive adoption of cloud and among them security remains one of the principal concerns. Traditional failure analysis and prevention frameworks fall exceedingly short to address cybersecurity as is evident by every increasing cybersecurity breaches. New frameworks for cybersecurity are required which take a holistic view of the problem and a systems perspective. Migrating to cloud also represents a key decision point for CEO/CTO's today, especially from security perspective. The objective of this thesis is to illustrate the effectiveness of taking a Systems Approach to cybersecurity and provide a framework for migration to cloud with specific emphasis on critical cybersecurity issues pertaining to various cloud deployment models and delivery services. The thesis is divided into three phases. Firstly, it will aim to explore the major security threats and critical areas of focus for security in cloud. It will explore the major security frameworks, metrics and controls, especially the major ones from NIST, CIS and CSA. SLA's for different cloud service models will then be presented. A high level cloud migration framework strategy and framework, with special emphasis on cybersecurity will also be discussed. In the second phase, System- Theoretic Accident Model and Processes (STAMP) which is based on Systems Theory will be applied to Target security breach and key recommendations as well as new insights will be presented. The analysis will highlight the need for holistic approach and Systems Thinking to cybersecurity and new insights that are not produced by traditional methods will be presented. Finally, in the third phase, the cloud migration framework discussed in phase one will be applied to Target. A case will be made that in certain scenarios, moving the less critical applications to cloud and utilizing the security benefits of cloud can actually reduce the threat vectors and security exposures and bring IT systems from a higher risk state to lower risk state. The thesis integrates cybersecurity methods and frameworks as well as security metrics with the cloud migration strategy. Additionally, it also presents STAMP/CAST failure model for cybersecurity breaches and highlights the need for integrated view of safety and security and Systems Thinking in cybersecurity both in traditional systems and cloud.<br>by Ravi Raina.<br>S.M. in Engineering and Management
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Danzfuss, Theodor Werner. "The technology of casually connected collaboration." Diss., Pretoria : [s.n.], 2009. http://upetd.up.ac.za/thesis/available/etd-11232009-181958/.
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Telford-Smith, Colette. "Reflections of South African nurses migrating to the Kingdom of Saudi Arabia a framework for support." Thesis, Nelson Mandela Metropolitan University, 2006. http://hdl.handle.net/10948/401.
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The last decade has seen an exodus of South African nurses migrating to "greener pastures". As a result of this migration, the South African Healthcare Service has been drained of one of its most essential resources – nurses. Subsequently, the crippling flight of nurses has thrown the nursing profession into a state of crisis. The Kingdom of Saudi Arabia is one of the more popular destinations for South African nurses, the main reason being the attractive financial rewards. One agency reports that they send an average of thirty nurses a month to various hospitals within the Kingdom of Saudi Arabia. Saudi Arabia is an Islamic country. Due to the uniqueness of the enforcement of the Islamic faith and the Saudi culture, many restrictions are imposed, particularly on women. The challenges and problems facing the South African nurses were, therefore, unique compared to elsewhere in the world. This research study had a primary and a secondary objective: The primary objective of this study was to explore and describe the lived experiences of South African nurses related to living and working in Saudi Arabia; The secondary objective of this study was to develop orientation guidelines to support South African nurses working and living in Saudi Arabia. The researcher utilized a qualitative, explorative, descriptive and contextual design based on a phenomenological approach to inquiry, in an attempt to answer the question: "What are the professional and personal experiences of the South African registered nurses working and living in Saudi Arabia?" Eleven registered nurses were selected to participate by means of purposive sampling. These nurses had been living in Saudi Arabia between three and six months. Consent was obtained from participants and the ethics committee of both the Nelson Mandela Metropolitan University and King Faisal Specialist Hospital and Research Centre. The central theme emanating from the study was recognized as being 'Cultural Diversity'. The sub-themes identified related to the registered nurses’: - Religious/spiritual adaptation - Environmental adaptation - Emotional/psychological adaptation - Professional adaptation Based on the identified themes, guidelines were formulated to assist South African registered nurses when migrating to Saudi Arabia. Utilization of these should assist the South African registered nurse in assimilating into both the cultural and working environment. However, in reality, the outcome showed that no one can be prepared fully for what awaits them in Saudi Arabia.
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Sauriol-Nadeau, Isabelle. "Building or stumbling, blocks anyhow: a comparative approach of regional labour mobility frameworks towards global solutions." Master's thesis, University of Cape Town, 2018. http://hdl.handle.net/11427/29712.
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While concessions to labour mobility at the international level seem off the agenda, with the General Agreements on Trades in Services essentially tabled, the past decades have produced a proliferation of regional trade agreements (RTAs), some of which are facilitating labour mobility specifically. In this paper, the author first conducts a comparative overview of RTAs that have a form of labour mobility programmes: namely, ECOWAS, ASEAN, the European Union, NAFTA, CARICOM and MERCOSUR. Building on an overview of the regulatory frameworks, institutions and legal instruments of these RTAs, the author seeks to find if patterns or lessons to be learned emerge that are relevant from a global perspective and to enhance the legal architecture of international labour mobility. The findings show positive outcomes, with some RTAs generating trade benefits and even moving forward with a common passport based on the newly shared regional identity, and at times even creating dispute settlement and legal systems for regional litigious matters. On the other hand, this exercise also points to various problems such as the poor implementation of the labour mobility provisions, to overly strict restrictions based on skill and to difficulty securing documents to benefit from the labour mobility programmes - in some of the agreements. In the second part, the author discusses these challenges faced in these regional systems. She notes that prioritising skilled as opposed to low-skilled workers has not yielded a comparative advantage and may also be fostering irregular movements. She also highlights that trade liabilities emerge from the association of countries with similar levels of development and that it accentuates the North-South paradigm. These problems disrupt access to the benefits of the programmes, which ultimately creates irregular migrations and uneven labour standards for migrant workers. Finally, the author finds that most RTAs reviewed are developing their own legal frameworks with limited interest for the international instruments available, which are at best a source of inspiration. In the third part, the author invites the reader to challenge many preconceived ideas on international mobility emerging from the first two sections, and shares her thoughts on ways forward to build an international framework, based on existing scholarly work and considering the unpopularity of the GATS. She concludes with a discussion on ‘new regionalism’ as an alternative until a shared international framework to facilitate migrations is set up, with the possibility of a merger between RTAs from the North and the South. This, she argues, could possibly unleash the full benefits of labour mobility such as increased GDPs, poverty reduction and tackling irregular migrations; benefits that have not been entirely felt to date.
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Issa, Mubdir. "Performance Impact of Migrating a Mining Traffic Management System To Docker." Thesis, Karlstads universitet, Institutionen för matematik och datavetenskap (from 2013), 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-86037.
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Software deployment is all of the activities that make a software system available for use. An examaple of such activites can be installations, updating and removing of software. Each deployment platform can differ in quality attributes such as performance, maintainability, etc. Docker, a deployment platform using container technology offering a more modular way of deployment has become increasingly popular over the past few years. The aim of the project is to find out how a deployment with Docker would affect the performance of a clientserver application from the mining industry. Three scenarios were performed in a simulated environment for the existing as well as the potential deployment platform. Measures of roundtrip time were made for both sets of the scenarios. Results show a general decrease in performance when running the application on Docker. This is especially seen in early stages of each scenario, where Docker in average has 15 times higher roundtrip times than the existing platform. However, results gathered from each scenario suggests that while Docker does start much slower than the existing platform, in later stages of each scenarios, Docker manages to narrow the gap and be at most 1.14 times higher than the existing platform. In conclusion, while the deployment in which the existing platform is deployed on does out perform Docker, it still shows some promise and could potentially be a worthy option to look at for further work.
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Cheema, Aseem Paul Singh. "Struts2JSF: Framework Migration in J2EE Using Framework Specific Modeling Languages." Thesis, 2007. http://hdl.handle.net/10012/3031.
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Java 2 Enterprise Edition is a portable, robust, scalable and secure platform for enterprise
software development based on Java technologies, and embraces open standards through
the Java Community Process (JCP). J2EE development is not very productive because of
the complexity of the platform and the lack of good tool support. Object-Oriented Frame-
works are a reliable design and code reuse approach. Many frameworks have emerged
since J2EE’s release to ease development. Struts has become the de-facto standard, while
JavaServer Faces (JSF) is a new framework, which has been included in the J2EE spec-
ification and hence standardized. Both Struts and JSF frameworks are based on Model-
View-Controller design pattern. JSF takes a similar approach to Struts for the controller
component, but adds to it by providing user interface components with server-side state
for the view component.
This work deals with the problem of migrating an application based on the Struts frame-
work to the new JSF framework. The software migration task is divided into view and con-
troller migration. Controller migration is semi-automated using Antkiewicz’s Framework-
Specific Modeling Languages (FSML) approach. Guidelines are provided for view migra-
tion, which boils down to the problem of componentization. JSF and Struts frameworks
can also be used together where JSF supports the view component while Struts supports
the controller component. Merits and demerits of this approach are also discussed.
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Tzeng, Tien-Tzong, and 曾天縱. "MobileFBP - A Dynamic Migration Framework for Android Applications." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/99298266708570270071.
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碩士<br>國立臺灣大學<br>資訊工程學研究所<br>101<br>Fundamentally, the computing resources on a mobile device are limited by the form factors of the device. For a mobile application to overcome this resource limitation, it might seek and utilize extra resources in the cloud. Client-server model is a traditional method to utilize the cloud resources, but it requires the programmer to partition applications and establish the server environment, which are not simple tasks. Thus, we investigate procedure offloading techniques which migrate the program process to cloud system dynamically without requiring the programmer to provide a cloud service in advance.
In this thesis, we proposed a unified application development framework, called MobileFBP, which leverages the Flow-Based Programming (FBP) paradigm to enable the development of portable mobile applications to run accross different mobile-cloud computing environments with scalable performance. The framework further supports heterogeneous cloud systems to reduce the execution time and power consumption with multicore processors, GPU, and hardware accelerators. We discuss the design of the MobileFBP framework and present several usage scenarios in our experimental studies.
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Tsai, Ying-Ding, and 蔡吟定. "Content Replication and Migration in Multimedia Streaming Framework." Thesis, 2001. http://ndltd.ncl.edu.tw/handle/14490497588569332559.
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碩士<br>國立臺灣大學<br>資訊工程學研究所<br>89<br>According to the progress of information technology, the bandwidth of network has become larger and larger. Not only pure data or file can be conveyed in network, people can transmit real-time data such as audio and video. As a result, the question of how to improve user’s quality of service (QoS) naturally becomes an important issue of research.
According to multimedia streaming protocol today, such as RTSP (Real Time Streaming Protocol), we design a multimedia streaming framework which can reduce user’s waiting time and improve user’s quality of service efficiently. In our framework, we use three kinds of servers, namely “Redirector”, “Content Repository”, and “Prefix Cache”, the details of their functionality will be explained later. At the beginning, user’s request will be handled by our central-control Redirector first, and then Redirector will find the most suitable Multimedia Streaming Server to transfer multimedia data.
In our framework, Prefix Caches could merely store the prefix of multimedia data, this is for the reason of reducing user’s waiting time, and save servers’ hard-disk space at the same time. Entire multimedia data will be stored at Content Repositories, therefore, when somebody want to appreciate entire multimedia data, Multimedia Streaming Servers will download the rest of multimedia data from Content Repositories, of course. However, which Content Repository should we choose? Furthermore, which Content Repository would the best choice to store the entire replica of multimedia data? These critical problems would be solved in this paper.
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Fan, Chih-Tien, and 范植添. "Agent-based Intelligent Software Migration Framework in Hybrid Cloud." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/01227391987522163364.
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碩士<br>國立臺北大學<br>資訊工程學系<br>99<br>Before the cloud concept being proposed, organizations built their own private cloud environment to support their own computing resources consumption. But it is not efficient since most of the time the computing resources are idled. Cloud computing provides a new charging concept, pay as you go. The computing resource is on-demand. Public cloud providers build their own computing farm and rent the resources to the costumers. But there are some disadvantage moving all the organization’s computing resource to the cloud. Hence the hybrid cloud is being proposed.
The hybrid cloud model allows organizations to build their own private cloud for their basic usage, while using the public clouds’ resource when needed. By connecting the public cloud and private cloud together, organizations can dynamically manage the computing resource, so that the organization can run jobs at a minimum cost while guarantee certain efficiency. But the problem of how to dynamically set up the environment is still remains.
We proposed an agent-based intelligent software migration framework. With the framework, agents will automatically monitor the execution environment both in private cloud and public cloud. The agents will dynamically set up or shut down computing resources according to all the jobs’ status. After resizing the computing resources, the agents will migrate some jobs to public cloud to increase the total system’s efficiency.
We also proposed three kinds of policy that can be used on hybrid cloud environment. The policy will decide when the computing resource needs to be resized, and which job will be migrated to the public cloud.
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Wu, Po Yi, and 吳柏毅. "A Novel Routing Framework for Technology Migration with Bump Encroachment." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/34310019970220638138.
Full textAbstract:
碩士<br>國立清華大學<br>資訊工程學系<br>103<br>Technology migration plays a critical role in the time-to-market competition. Most existing works focus on layout compaction or hardware description language re-synthesis, and pay little attention to the I/O interface in flip chips. The complication of bumping process as well as electrical and reliability considerations prevent the bumps from scaling with transistor sizes. On the other hand, the number of signal bumps cannot be reduced and sometimes even increases due to the demands for wider bandwidth and various peripheral devices. As a result, the allocated die area for I/O can no longer afford the number of bumps a chip requires. This issue, known as bump encroachment, puts a stringent requirement on the redistribution layer (RDL) routing. In this paper, we first formulate the problem of RDL routing with bump encroachment, and then propose a network flow based algorithm to efficiently address it. Experimental results on a few benchmarks with parameters extracted from industrial designs show that compared with a maze routing-based approach, our algorithm can achieve up to 69% wirelength reduction.
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Huang, Shin-Bo, and 黃信博. "CLFBP : A Dynamic Application Migration Framework for Android and Linux systems." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/11082877251021190169.
Full textAbstract:
碩士<br>國立臺灣大學<br>資訊工程學研究所<br>101<br>Smartphone has changed human life, and making smartphone applications smoother and more efficient has become a hot research topic in recent years. Both of the computing capability and the power consumption of smartphones are limited due to the small form factors.
Task offloading is a common technology to speed up the performance of smartphone applications. Based on the concept of flow-based programming (FBP), we propose a framework, called CLFBP, which combines OpenCL into FBP to provide two benefits: Using OpenCL, a CLFBP program can leverage the power of heterogeneous servers; Using FBP, smartphone applications can migrate part of its workload to the cloud.
CLFBP addresses four challenges for migrating workload in today''s mobile-cloud environment including tasks partition, facilitating communication between tasks, making dynamic offload decisions, and leveraging the power of heterogeneous servers. In addition, CLFBP provides application programming interfaces for both coarse-grain task partitioning and fine-grain data parallel programming, which allows programmers to re-factor applications conveniently.
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Ajigini, Olusegun Ademolu. "A framework to manage sensitive information during its migration between software platforms." Thesis, 2016. http://hdl.handle.net/10500/21118.
Full textAbstract:
Software migrations are mostly performed by organisations using migration teams. Such migration teams need to be aware of how sensitive information ought to be handled and protected during the implementation of the migration projects. There is a need to ensure that sensitive information is identified, classified and protected during the migration process. This thesis suggests how sensitive information in organisations can be handled and protected during migrations by using the migration from proprietary software to open source software to develop a management framework that can be used to manage such a migration process.A rudimentary management framework on information sensitivity during software migrations and a model on the security challenges during open source migrations are utilised to propose a preliminary management framework using a sequential explanatory mixed methods case study. The preliminary management framework resulting from the quantitative data analysis is enhanced and validated to conceptualise the final management framework on information sensitivity during software migrations at the end of the qualitative data analysis. The final management framework is validated and found to be significant, valid and reliable by using statistical techniques like Exploratory Factor Analysis, reliability analysis and multivariate analysis as well as a qualitative coding process.<br>Information Science<br>D. Litt. et Phil. (Information Systems)
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Mushi, Tumelo Nicholas. "The design, development and evaluation of a holistic cloud migration decision framework." Diss., 2020. http://hdl.handle.net/10500/27904.
Full textAbstract:
No keywords provided in dissertation<br>Cloud Computing has gained traction since its emergence and client organisations that want to benefit from the Cloud are looking for ways to migrate their on-premise applications to the Cloud. To assist client organisations with migration projects, researchers and practitioners
have proposed various Cloud migration approaches. However, these approaches differ in applicability depending on the type of application being migrated and the Cloud Service Provider where the application is being migrated to. The various approaches to Cloud migration create complexity in Cloud migration decisions as client organisations have to
consider various approaches depending on the migration project. The purpose of this dissertation is to create a universal Cloud migration approach that can be applied to every Cloud migration project. In this dissertation, a cloud migration decision framework is proposed; namely, A Holistic Cloud Migration Decision Framework (HCMDF). The research strategy that was followed is Design Science Research (DSR) and was selected since the output of the research is going to be an Information Technology (IT) research artefact. By applying the DSR strategy, the HCMDF was successfully developed and evaluated in the real world using an adaptive case study. The analysis of the results indicated that the HCMDF solves Cloud migration problem and that it can be applied to every Cloud migration project.
Throughout the evaluation, areas of improvement were identified and these will be considered in future research.<br>School of Computing<br>M. Tech (Information Technology)
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Tseng, Tai-Lun, and 曾台綸. "Migratom.js: A JavaScript Migration Framework for Distributed Web Computing and Mobile Devices." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/32533195833767824154.
Full textAbstract:
碩士<br>國立臺灣大學<br>資訊工程學研究所<br>102<br>The emerging HTML5 technologies aim to enhance web apps with increased capabilities on mobile devices,
as device-to-device computing becomes important in the future.
To enable new application scenarios by making HTML5 execution environment dynamic and efficient,
we propose a JavaScript framework emph{Migratom.js},
which manages task offloading and code migration with the flow-based programming paradigm.
Migratom.js accelerates mobile web apps by offloading compute-intensive tasks to superior computing resources and enables the development of distributed HTML5 applications.
This thesis describes the design and implementation of Migratom.js and conducts case studies to evaluate the proposed framework.
The results show that our framework is suitable for augmenting existing and emerging mobile applications.
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Maas, Catherina Aletta. "An analysis of the normative framework providing for human environmentally induced migration in SADC / Catherina Aletta Maas." Thesis, 2014. http://hdl.handle.net/10394/15378.
Full textAbstract:
Environmentally induced migration has been a contentious topic over the last two decades. Estimates show that over 30 million people worldwide are annually forced to migrate due to serious environmental degradation, natural disasters and depletion of natural resources. Thus the environment is irrefutably changing, and clear linkages can be drawn between environmental change and human mobility. Africa‘s developing status and its vulnerability in the context of environmental shocks compels research on prospective impacts and outcomes in order to develop proper mitigation and adaptation strategies, especially in Southern African Development Community (SADC) where the likelihood of protection measures being successfully implemented is relatively low. This dissertation is aimed at providing the reader with a detailed analysis of the regional normative framework regulating the issue of environmentally induced migration in SADC. Because environmental migrants are not considered to be ―refugees‖ in international law and on account of the fact that many policy makers and practitioners have their reservations as regards even acknowledging the existence of environmental migrants, protection and regulation in this regard is understandably lacking. A comprehensive framework is nonetheless required to regulate this phenomenon as it prompts serious security and sovereignty concerns. Until quite recently, most African countries had not even put in place national migration policies. Although many states have policies in place now, most have not yet been fully and effectively implemented. The normative framework governing specifically environmentally induced migration in SADC similarly renders rather disappointing results. Most of the applicable instruments do not directly raise the issue and the provisions indirectly touching upon the subject matter are subject to interpretation. A binding protocol must therefore be adopted by SADC Member States embracing elements contained in the instruments comprising the current framework. Such a protocol will however have to be liberal enough to acknowledge and provide for environmentally induced migration in its entirety whilst conservative enough so as not to undermine protection regimes for refugees in the true sense of the word. Conflicting interests and sovereignty considerations will, however, undoubtedly continue to hinder progress in this regard. The way forward is therefore away from ultimate sovereignty preservation and toward a regionalised approach where human rights no longer take a backseat.<br>LLM (Environmental Law and Governance), North-West University, Potchefstroom Campus, 2015
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Almonaies, ASIL. "A FRAMEWORK FOR MIGRATING WEB APPLICATIONS TO WEB SERVICES." Thesis, 2013. http://hdl.handle.net/1974/7865.
Full textAbstract:
Service Oriented Architecture (SOA) is an increasingly important software architecture, designed to flexibly connect separate components in response to rapid changes in the business environment. SOA focuses on the exchange of information between independent software
components and on the reusability of the components by separating communication interface from internal implementation. There are several features of SOA that make legacy system modernization to SOA appealing in today’s world. These are loose coupling, abstraction of underlying logic, agility, flexibility, reusability, autonomy, statelessness, discoverability and reduced cost.
Migration of legacy systems to SOA is an important problem. While migration of
legacy data processing systems has been widely studied, migration of legacy web applications has not. In this thesis we review existing strategies for migration of monolithic legacy web applications to web services, noting the unique challenges due to the highly dynamic nature of the systems, poorly structured code, and weakly typed languages in web applications, and the need for automation to assist in the process.
We present a new semi-automated framework for the analysis and migration of monolithic
web applications to web services using source analysis and transformation techniques,
and outline a set of source transformation steps that can be used to migrate existing
legacy web applications to web services form. We demonstrate our framework on
the analysis and automated restructuring of two large existing web applications to extract and migrate integrated internal features to independent, reusable web services.<br>Thesis (Ph.D, Computing) -- Queen's University, 2013-03-28 14:23:24.797
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Bhowmik, Sayantan. "Particle tracking proxies for prediction of CO₂ plume migration within a model selection framework." Thesis, 2014. http://hdl.handle.net/2152/24795.
Full textAbstract:
Geologic sequestration of CO₂ in deep saline aquifers has been studied extensively over the past two decades as a viable method of reducing anthropological carbon emissions. The monitoring and prediction of the movement of injected CO₂ is important for assessing containment of the gas within the storage volume, and taking corrective measures if required. Given the uncertainty in geologic architecture of the storage aquifers, it is reasonable to depict our prior knowledge of the project area using a vast suite of aquifer models. Simulating such a large number of models using traditional numerical flow simulators to evaluate uncertainty is computationally expensive. A novel stochastic workflow for characterizing the plume migration, based on a model selection algorithm developed by Mantilla in 2011, has been implemented. The approach includes four main steps: (1) assessing the connectivity/dynamic characteristics of a large prior ensemble of models using proxies; (2) model clustering using the principle component analysis or multidimensional scaling coupled with the k-mean clustering approach; (3) model selection using the Bayes' rule on the reduced model space, and (4) model expansion using an ensemble pattern-based matching scheme. In this dissertation, two proxies have been developed based on particle tracking in order to assess the flow connectivity of models in the initial set. The proxies serve as fast approximations of finite-difference flow simulation models, and are meant to provide rapid estimations of connectivity of the aquifer models. Modifications have also been implemented within the model selection workflow to accommodate the particular problem of application to a carbon sequestration project. The applicability of the proxies is tested both on synthetic models and real field case studies. It is demonstrated that the first proxy captures areal migration to a reasonable extent, while failing to adequately capture vertical buoyancy-driven flow of CO₂. This limitation of the proxy is addressed in the second proxy, and its applicability is demonstrated not only in capturing horizontal migration but also in buoyancy-driven flow. Both proxies are tested both as standalone approximations of numerical simulation and within the larger model selection framework.<br>text
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KUO, YUAN-HAN, and 郭遠翰. "A Task Guided Framework for Reducing the Service Downtime of Virtual Machine Live Migration." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/7cvv6u.
Full textAbstract:
碩士<br>國立宜蘭大學<br>電子工程學系碩士班<br>106<br>Virtual machine live migration is an important mechanism for cloud computing to achieve non-stop services. Different from normal migration, the live migration with pre-copy scheme employs two stages of page synchronization. In the first stage, memory pages are selected according to the pre-copy rules and those selected pages are synchronized from the source host to the target host. The pre-copy rules are designed to reduce the number of synchronized pages in the second stage: the stop-and-copy stage. By reducing the number of synchronized pages, the service downtime can be minimized and the quality of service can be ensured.
The service downtime of live migration is affected by page-accessing frequency and the size of working set. Therefore, the users may experience a long service downtime if a migrating virtual machine enters the stop-and-copy stage at an inappropriate time point. This thesis proposes a task-guided framework that is useful for reducing the service downtime when a live migration is conducted. The task-guided framework allows a program developer to tag task segments that are suitable for migrating a virtual machine with a short service downtime. However, a task segment may have been completed before a virtual machine enters the pre-copy stage. In this case, a large number of pages may need to be synchronized across hosts. In order to avoid the situation, an interrupt mechanism is added to prevent a virtual machine from entering the stop-and-copy at an inappropriate time point for an ongoing live migration. The interrupt mechanism is achieved by asking the hypervisor to suspend the live migration when the program exits a tag segment. The pending live migration will be resumed when the program enters the next tag segment in order to ensure a short service downtime.
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Frank, A. Elizabeth. "An evaluation of the migration push-pull framework using data for low-income interstate migrants." 1988. http://catalog.hathitrust.org/api/volumes/oclc/19869310.html.
Full textAbstract:
Thesis (M.S.)--University of Wisconsin--Madison, 1988.<br>Typescript. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 51-54).