There have been a number of different versioning models proposed. The research in this area can be divided into two categories: object versioning and schema versioning. In this dissertation, both problem domains are considered as a single unit. This dissertation describes a unifying version model (UVM) for maintaining changes to both objects and schema. UVM handles schema versioning operations by using object versioning techniques. The result is that the UVM allows the OODBMS to be much smaller than previous systems. Also, programmers need know only one set of versioning operations; thus, reducing the learning time by half. This dissertation shows that UVM is a simple but semantically sound and powerful version model for both objects and schema.

Modern computational software is increasingly large in terms of lines of code, number of developers, intended longevity, and complexity of intended architectures. While tools exist to mitigate the problems this type of software causes for the development of functional software, no solutions exist to deal with the problems it causes for performance. This thesis introduces a design called the Software Development Performance Analysis System, or SDPAS. SDPAS observes the performance of software tests as software is developed, tracking builds, tests, and developers in order to provide data with which to analyze a software development process. SDPAS integrates with the CMake build and test suite to obtain data about builds and provide consistent tests, with git to obtain data about how software is changing. SDPAS also integrates with TAU to obtain performance data and store it along with the data obtained from other tools. The utility of SDPAS is observed on two pieces of production software.

Os motores de busca utilizam o WebGraph formado pelas páginas e seus links para atribuir reputação às páginas Web. Essa reputação é utilizada para montar o ranking de resultados retornados ao usuário. No entanto, novas versões de páginas com uma boa reputação acabam por distribuir os votos de reputação entre todas as versões, trazendo prejuízo à página original e também as suas versões. O objetivo deste trabalho é especificar novos escores que considerem todas as versões de uma página Web para atribuir reputação para as mesmas. Para atingir esse objetivo, foram propostos quatro escores que utilizam a detecção de versões para atribuir uma reputação mais homogênea às páginas que são versões de um mesmo documento. Os quatro escores propostos podem ser classificados em duas categorias: os que realizam mudanças estruturais no WebGraph (VersionRank e VersionPageRank) e os que realizam operações aritméticas sobre os escores obtidos pelo algoritmo de PageRank (VersionSumRank e VersionAverageRank). Os experimentos demonstram que o VersionRank tem desempenho 26,55% superior ao PageRank para consultas navegacionais sobre a WBR03 em termos de MRR, e em termos de P@10, o VersionRank tem um ganho de 9,84% para consultas informacionais da WBR99. Já o escore VersionAverageRank, apresentou melhores resultados na métrica P@10 para consultas informacionais na WBR99 e WBR03. Na WBR99, os ganhos foram de 6,74% sobre o PageRank. Na WBR03, para consultas informacionais aleatórias o escore VersionAverageRank obteve um ganho de 35,29% em relação ao PageRank. / Search engines use WebGraph formed by the pages and their links to assign reputation to Web pages. This reputation is used for ranking show for the user. However, new versions of pages with a good reputation distribute your votes of reputation among all versions, damaging the reputation of original page and also their versions. The objective of this work is to specify the new scores to consider all versions of a Web page to assign reputation to them. To achieve this goal, four scores were proposed using the version detection to assign a more homogeneous reputation to the pages that are versions of the same document. The four scores proposed can be classified into two categories: those who perform structural changes in WebGraph (VersionRank and VersionPageRank) and those who performs arithmetic operations on the scores obtained by the PageRank algorithm (VersionSumRank and VersionAverageRank). The experiments show that the performance VersionRank is 26.55% higher than the PageRank for navigational queries on WBR03 in terms of MRR, and in terms of P@10, the VersionRank has a gain of 9.84% for the WBR99 informational queries. The score VersionAverageRank showed better results in the metric P@10 for WBR99 and WBR03 information queries. In WBR99, it had a gain of 6.74% compared to PageRank. In WBR03 for random informational queries, VersionAverageRank showed an increase of 35.29% compared to PageRank.

Numerous Thai older people fall each year. Although it has been shown that only 3.1% of fallers sustained fractures (Nevitt, Cumming, Kidd, & Black, 1989), injuries in older people are often more serious. For example, hospital charges for older adult fall injuries are about US $2,000 per person higher than for young fallers (Ellis & Trent, 2001). Moreover, falling can lead to social isolation, physical restraint, disability and institutionalisation (Donald & Bulpitt, 1999; Tideiksaar, 1994). Therefore falling in old age results in a considerable burden on, not only the individual concerned, but also the whole society. Internationally, a successful falls prevention program usually employs a multidimensional approaches (Alexander & Edelberg, 2002; Mosley, Galindo- Ciocon, Peak, & West, 1998). However, limited information about fall prevention has been reported in Thailand. A survey indicated that Thai elderly fall outside their homes which is different from the findings in Western countries (Jitapunkul et al., 1998). This suggests that adoption of fall prevention strategies from Western countries might not be successful in Thailand. Prior to this study, details of fall circumstances in terms of location, time, associated activity, hazards and type of falls in Thai older people were not available. Moreover, there was no information about fear of falling and activity restriction. These are important fall consequences that impact on quality of life and themselves are risk factors for falls. The purpose of this study was to determine the prevalence of fear of falling, and to describe activity restriction in fallers and non-fallers, and the circumstances associated with falls in Thailand. No fear of falling measurement tools for Thai older people were available prior to the study. / Therefore the Survey of Activities and Fear of Falling in the elderly (SAFE) has been modified for use with Thai elderly people. The SAFE was translated to Thai by a certified translator, checked for cultural relevance and back-translated by a second translator; reliability testing then took place in Thailand. Face validity and cultural appropriateness were tested with a sample of convenience of 10 bilingual Thai elderly people living in Perth, Australia. After translation into Thai, 4 items showed less than 80% agreement and required adjustment to capture the equivalent meaning of the original version. The ‘take a show/wash yourself with a basin of water’ was added because the participants reported that taking a tub bath is not common or traditional in Thailand. However, the item ‘take a tub bath’ was retained until the examination in the main study confirmed that less than 1% of Thai older persons had taken a tub bath and inclusion of the item confounded actual fear of falling results. Interrater reliability was tested; nine 4th year occupational therapy students and 15 older persons living in the Chiang Mai community were recruited. The intraclass correlation coefficient of fear of falling of activities done, activities not done and activity restriction scores were .9845, .9236 and .9718 respectively (p < 0.001). Four raters and 50 older community dwellers participated in the intrarater and test-retest reliability tests. The results showed that intrarater reliability of all raters exceed 0.8 in every scores (p < .001). / The test-retest also demonstrated good reliability: .9960, .9376 and .9849 (p < 0.0001) for fear of falling of activities done, activities not done and activity restriction scores respectively. Five hundreds and forty six Thai older adults were then recruited by multistage random sampling. Fall history, fall circumstances, fear of falling and activity restriction data were obtained by structured interview and using the Thai version of the SAFE. The results demonstrated that prevalence of falls, fear of falling and activity restriction in Thai older people were 21%, 48% and 18%, respectively. Comparison between fallers and non-faller showed that fallers were more likely to be older (p < .001), female [χ2(1, N = 546) = 6.133; p = .013], not married [χ2 (4,N=546)=61.102;~= .001], living alone[χ2 (l,N=546)=4.313;p= ,041, rated their health as poorer [χ2 (4, N = 546) = 13.232; p < .001], had fear of falling [χ2 (1, N = 546) = 6.265; p = .015] and activity restriction [χ2 (1, N = 546) = 5.488; p = ,0271]. Older persons with a fear of falling tended to be older (p = .005), lower educated (p < .001), female [χ2 (1, N = 546) = 29.602; p = .001], rated their health as poorer [χ2 (4, N = 546) = 69.70; p < .001], had fallen [? (1, N = 546) = 6.265; p = ,0151 and had activity restriction [χ2 (l, N = 546) = 23.267; p < .001]. Older adults who curtailed their activities tended to be married [χ2 (1, N = 546) = 6.188; p = ,0131, rated their health as poorer [χ24, N = 546) = 14.302; p = ,0061, have a fall history [χ2 (1, N = 546) = 5.488; p = ,0271 and have a fear of falling [χ2(1, N = 546) = 23.267; p < .001]. / Using Chi-square test, the results showed that there were significant associations between falls and fear of falling χ2(l,N=546)=6.265;p=.015], falls and activity restriction [χ2 (l,N= 546) = 5.488; p = ,0271] and fear of falling and activity restriction [χ2 (1, N = 546) = 23.267; p < .001]. Fall circumstances of 114 falls demonstrated that most falls took place outdoors (65%), were associated with work (40%), involved environmental hazards (76%), occurred during the daytime (90%). Moreover most falls were falls on the same level from slipping, tripping or stumbling (61%). Logistic regression analysis indicated that risk factors for fear of falling in Thai older people were age (odds ratio = 1.025), unmarried-female (odds ratio = 5.979), married female (odds ratio = 1.903), poor self perceived health (odds ratio = 3.383) and more than 2 falls experience (odds ratio = 7.202). The protective factors were unmarried marital status for men (odds ratio = 0.344) and level of education (odds ratio = 0.933 2 or less falls and = 0.5625 if more than 2 falls in 12 months). The logistic model also provided a logistic equation for individual prediction of probability of fear of falling. To calculate the probability of having fear of falling, 6 parameters are required: age, gender, marital status, level of education, self-perceived health and number of falls in the past 12 months. The equation predicts with 70% accuracy and can be used for screening fear of falling in Thai elderly people. In conclusion, this study has modified a measurement tool (the SAFE Thai version) and developed a screening tool (logistic equation) for fear of falling. Both of them appear to be appropriate to further examine FOF in Thai elderly. The survey results showed a considerably number of Thai elderly people have fall experiences, fear of falling and activity restriction. / The predisposing factors for each problem have been identified. The association between 3 problems implicated that fear of falling and activity restriction interventions are necessary for fall prevention. The fall circumstances data show that conditions of falls in Thai elderly people were similar and dissimilar to those in Western countries. The preventive efforts to reduce falls should consider these distinctive fall circumstances.

Even if software handover is a critical process in the lifecycle of a software system, there is still very little research   done within its domain. In this paper, we evaluate the taxonomy of handover activities as defined in EM3: Handover Process Model. We do it in an industrial setting in a context where a software system is handed over from a vendor conducting system development, evolution and maintenance to an acquirer using the system and conducting front-end support. Our results show that the taxonomy is realistic in the context studied. However, it misses some important deployment and training activities. / © 2010 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.QC 20120223

Samhället eftersträvar att förhindra våld. Tre ansatser har etablerats för att avgöra farlighet och för att bedöma risk för våld; den ostrukturerade professionella bedömningsansatsen, den aktuariska bedömningsansatsen, samt den strukturerade professionella bedömningsansatsen. HCR-20 är ett strukturerat professionellt bedömningsinstrument med hög validitet och interbedömarreliabilitet i bedömning av risk för våld. HCR-20 genomgår en evidensbaserad uppdatering och den reviderade versionen skall utvärderas - syftet med studien var därför att undersöka interbedömarreliabilitet för den tredje versionen av HCR-20 [HCR-V3]. Vid Rättspsykiatriska regionkliniken i Sundsvall riskbedömdes 35 patienter som inskrivits för tvångsvård under februari 2010 till oktober 2011. Interbedömarreliabilitet undersöktes för grad av överensstämmelse mellan bedömare samt också gentemot Golden Standard, bedömarnas gemensamma bedömning av patienten. Överensstämmelsen i HCR-V3bedömningarna beräknades på huvudfaktorer och på relevansfaktorer med Kendall’s τb, Cohen’s Κ, och ICC(1,2). HCR-V3 påvisade hög interbedömarreliabilitet med hög grad av överensstämmelse mellan användarnas bedömning av patientens risk för våld. Det var högre interbedömarreliabilitet för H-delen och C-delen än för R-delen. Överensstämmelsen mellan enskilda bedömare och Golden Standard var högre än överensstämmelsen mellan två bedömare, och huvudfaktorerna indikerade på högre interbedömarreliabilitet än relevansfaktorerna. Utifrån resultatet drogs slutsatsen att riskbedömningsinstrumentet HCR-V3 förmodligen inte skulle bli mer användarvänligt med relevansfaktorer, men att huvudfaktorerna ger hög interbedömarreliabilitet och att HCR-V3 därmed kan vara lämplig i klinisk verksamhet för att förhindra våld.

Syftet med denna studie var att främst undersöka om det finns ett negativt samband mellan medkänsletillfredställelse och utbrändhet hos handläggare inom socialtjänsten som arbetar med barn och ungdomar. Ett ytterligare syfte var att se om deltagarna uppvisade höga nivåer av sekundär traumatisk stress. Totalt deltog 37 handläggare från socialtjänstens barn och ungdoms grupper i en av Sveriges större städer. Mätinstrumentet som användes för studien var frågeformuläret ProQOL version 5. Resultatet från Pearsons produktmomentkorrelationskoefficient visade att det fanns ett signifikant måttligt negativt samband mellan medkänsletillfredställelse och utbrändhet. Vilket innebär att högre nivåer av medkänsletillfredställelse är associerat med lägre nivåer av utbrändhet. I linje med tidigare forskning dras slutsatsen att medkänsletillfredställelse kan hjälpa till att motverka utbrändhet. Deltagarna i studien rapporterade även låga nivåer av sekundär traumatisk stress. Detta var förvånande eftersom tidigare forskning rapporterar det motsatta.

The purpose of this bachelor thesis was to investigate the PLC systems used in ABBs breaker factory in Ludvika and to create a system specification suitable to be used in the procurement of a back-up solution for this workshop. This work involved information gathering from different sources, such as archives, physical installations and interviews of maintenance personnel and operators. The results included the requested system specification (in Swedish) including suggestions for pilot test installations and evaluations. The work also resulted in an extensive listing of all PLC systems with placement, typedesignations, expansion modules and other pertinent information. This information ismade available as a macro enabled multipage Microsoft Excel document. A summary and suggestions for follow up work is also included.

The growing sophistication of version control systems, a class of tools employed in tracking and managing changes to documents, has had a transformative impact on the practice of programming. In recent years great strides have been made to improve these systems, but certain stubborn difficulties remain. For example, merging of concurrently introduced changes continues to be a labour-intensive and error-prone process. This thesis examines these difficulties by way of a critique of the conceptual framework underlying modern version control systems, arguing that many of their shortcomings are related to certain long-standing, open problems around identity. The research presented here casts light on how the challenges faced by users and designers of version control systems can be understood in those terms, ultimately arguing that future progress may benefit from a better understanding of the role of identity, representation, reference, and meaning in these systems and in computing in general.

Thesis(M.S.)--Auburn University, 2006. / Abstract. Vita. Includes bibliographic references (p.72-78).