Rozprawy doktorskie: „Case control”

1

Liu, Xiaolei. "Sample Size Calculations in Matched Case-Control Studies and Unmatched Case-Control Studies with Controls Contaminated". University of Cincinnati / OhioLINK, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1221754897.

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Zhang, Han. "Information Driven Control Design: A Case for PMSM Control". Cleveland State University / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=csu1515408555890069.

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Kraus, Kalle. "Sven, inter-organisational relationships and control : a case study of domestic care of the elderly". Doctoral thesis, Stockholm : Economic Research Institute, Stockholm School of Economics (EFI), 2007. http://www2.hhs.se/EFI/summary/719.htm.

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Arbogast, Patrick G. "Statistical methods for case-control studies /". Thesis, Connect to this title online; UW restricted, 2000. http://hdl.handle.net/1773/9598.

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Roseman, Diane Harriet. "A case-control study of male infertility /". Thesis, Connect to this title online; UW restricted, 1995. http://hdl.handle.net/1773/10894.

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Won, Sungho. "Improving Genetic Analysis of Case-Control Studies". Case Western Reserve University School of Graduate Studies / OhioLINK, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=case1212774902.

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Haneuse, Sebastian J. P. A. "Ecological studies using supplemental case-control data /". Thesis, Connect to this title online; UW restricted, 2004. http://hdl.handle.net/1773/9595.

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Liu, Chunyan. "Sample Size Analysis and Issues About No-Perfect Matched-Controls for Matched Case-Control Study". University of Cincinnati / OhioLINK, 2006. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1155578591.

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9

Knowles, Carl William. "Assurance techniques for assessing security control efficacy : an industrial control systems case study". Thesis, Lancaster University, 2016. http://eprints.lancs.ac.uk/79962/.

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This thesis establishes the “assurance technique” as the central mechanism through which we gather evidence to make claims of assurance about security. The use of such assurance techniques in the process of assessing Industrial Control System (ICS) environments is explored. In doing so it provides six key contributions to knowledge: (i) a state-of-the-art survey of ICS security research, which culminates in a framework for future research, of which the assessment of security control efficacy is one element; (ii) claims about the effectiveness and cost-effectiveness of 20 assurance techniques used to assess the efficacy of security control implementation (e.g., a penetration test); (iii) claims about the effectiveness and cost-effectiveness of 5 assurance techniques used to assess the competency of individuals to use the assurance techniques that assess security controls (e.g., a multiple-choice examination); (iv) demonstration of the need for standardisation in a subset of these assurance techniques, based on an analysis of the real-world readiness and competence of the industry to deliver them; (v) the establishment of five novel principles (“PASIV”) to guide the safe use of assurance techniques within operationally sensitive areas of ICS environments, and the determination of potential assurance technique use across three phases of the system development life cycle; and (vi) the mapping of assurance techniques to security control families within ISO/IEC 27001:2013 (and its ICS-specific counterpart, ISO/IEC TR 27019:2013) to identify potential sources of audit evidence generation about security control efficacy.

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10

Rees, David John. "A case-control study of mesothelioma in South Africa". Doctoral thesis, University of Cape Town, 1995. http://hdl.handle.net/11427/26363.

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This thesis reports the results of a prospective multicentred case-control study of mesothelioma carried out in South Africa. The objectives of the study were: 1) to examine asbestos exposure of cases in detail with respect to source, risk occupations, fibre type and duration; 2) to determine relative risks for level (certainty) of exposure (definite, probable, possible, unlikely), for category of exposure (occupational, environmental), and for fibre type and skin colour; 3) to determine whether cases without recall of exposure were exposed to other non-asbestos putative agents; 4) to investigate the possible protective effect of certain dietary components. Previous studies of mesothelioma in South Africa had, with the exception of one incidence study, focused on particular occupational or case material, exposure data had been gathered in a non-systematic way, often indirectly from surrogates, and non-asbestos agents had not been investigated. In this case-control study these issues are all addressed. In addition, special efforts were made to minimise potential sources of bias (e.g. interviewer bias) and so to furnish reliable effect estimates. The study incorporated the following methodological features: 1) a prospective approach to gather exposure and dietary information directly from the cases and controls in life and so avoid the use of surrogates for this information; 2) the study was multicentred with study teams established in six cities, each with a major referral hospital, to maximise nation-wide coverage; 3) information was gathered with interviewers blind (at least at the beginning of the study) to study objectives and case control status at the time of the interview; 4) rigorous pathologic review was used to establish the diagnosis of mesothelioma; 5) two controls were selected for each case, a cancer and a non-cancer patient matched for hospital, sex, age and skin colour; 6) in analysis the case control datasets were treated separately (i.e cases and cancer controls, and cases and non-cancer controls were treated as two separate datasets). One hundred and twenty three cases were accepted into the study. No case was documented with purely chrysotile exposure nor exposure to a putative non-asbestos cause of the tumour without some evidence of asbestos exposure. A minimum of 22 cases (18%) had exclusively environmental exposure, 20 were from the NW Cape (a crocidolite mining region). Fifty eight percent had occupational exposure, three of whom had mined amosite. The relative risks associated environmental exposure in the NW Cape were larger than for environmental exposure in the NE Transvaal: 21.9 versus 7.1 for the cancer control dataset and 50.9 versus 12.0 for the medical control dataset. Increasing consumption of carotene rich fruit was found to be protective for mesothelioma when adjusted for asbestos exposure. The results confirm the high disease burden due to occupational exposure, the importance of environmental exposure in the crocidolite mining area of the NW Cape, the relative paucity of cases linked to amosite, the rarity of chrysotile cases, and are consistent with the view that there is a fibre gradient in mesotheliomagenic potential for South African asbestos with crocidolite > amosite > chrysotile. The evidence for a protective effect of carotene rich fruit is new in the South African context.

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11

Barlow, Hilary Joan. "An evaluation of neonatal nursing care in selected hospitals in the Western Cape". Thesis, Stellenbosch : University of Stellenbosch, 2003. http://hdl.handle.net/10019.1/16253.

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Thesis (MCUR)--University of Stellenbosch, 2003.
ENGLISH ABSTRACT: South Africa has a proud history of a high standard of health care delivery in State funded hospitals. This implies that high standards of education and care in both medical and nursing training have been achieved. The care of sick and premature newborn infants by nurses is a speciality that has evolved worldwide over the last forty years as a result of various technological developments. In order to ensure the standard of care delivered, protocols of care should be available for nurses to refer to and to measure their work against. There were no protocols of care available in the two Neonatal Units (NICUs) used in this study. Using a non-experimental, exploratory descriptive design, the researcher set about measuring the quality of nursing care in the NICUs. Standards (structure, process and outcome) were written by the researcher, and validated. The results showed that the standards were not met at an acceptable level in various areas. One of the areas of great concern was the lack of effective hand washing. Outcome standards which reflect the consequences of care indicated serious shortages of staff in some cases and insufficient staff training. Recommendations are that a Quality Assurance Program should be introduced with training and education of the nurses working in the NICUs and the introduction of evidencebased practice. Future research should aim at showing the way to improve the service delivered.
AFRIKAANSE OPSOMMING: Suid-Afrika het ‘n trotse geskiedenis van ‘n hoë standard van gesondheidsorgdienslewering in Staatsbefondsde hospitale. Dit impliseer dat hoë standaarde in mediese en verpleegopleiding bereik is. Die versorging van siek en premature pasgebore babas deur verpleegkundiges is ‘n spesialiteit wat oor die afgelope veertig jaar wêreldwyd ontwikkel het as gevolg van verskeie tegnologiese ontwikkelings. Ten einde te verseker dat ‘n hoë standard van sorg gelewer word, moet protokolle beskikbaar wees vir verpleegkundiges om te gebruik en hulle werkverrigting teen te meet. Daar was geen protokolle beskikbaar in die twee neonatale eenhede wat in hierdie studie gebruik is nie. ‘n Nie-eksperimentele, verkennende, beskrywende ontwerp is deur die navorser gebruik om die gehalte van verpleegsorg in die neonatale eenhede te evalueer. Standaarde (struktuur, proses en uitkoms) is deur die navorser opgestel en gevalideer. Die resultate toon aan dat die standaarde in verskeie areas nie aanvaarbaar nagekom word nie. ‘n Kommerwekkende bevinding was die afwesigheid van effektiewe was van hande. Uitkomsstandaarde wat die resultaat van sorg weerspieël, het aangedui dat daar ernstige tekorte aan personeel in sommige gevalle bestaan het asook onvoldoende opleiding van personeel. Aanbevelings is dat ‘n Gehalteversekeringsprogram ingestel behoort te word en met die opleiding van verpleegkundiges werksaam in die neonatale eenhede en evidence-based practice aangespreek moet word. Toekomstige navorsing behoort aan te dui hoe om die diens wat gelewer word, te verbeter.

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12

Schade, Markus. "Using Case-based Reasoning to Control Traffic Consumption". Master's thesis, Universitätsbibliothek Chemnitz, 2007. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-200701572.

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Quality of service is commonly used to shape network traffic to meet specified criteria. The various scenarios include limiting and reserving bandwidth for a particular application, host or user, prioritizing latency sensitive traffic or equal distribution of unreserved bandwidth. The DynShaper software distributes and controls a traffic quota by more sophisticated means than fixed per user limits and simple disconnection after the user reaches the limit. It distributes the quota on a daily basis, where each day receives the same share. The users are sorted into predefined groups with different bandwidths depending on their recent consumption. This classification is periodically updated to ensure the sorting order is maintained. The bandwidths of these groups is dynamically adjusted depending on the actual consumption to provide an efficient utilization. This thesis presents another distribution model using a case-based reasoning approach, a method for machine learning which is classified as conventional artificial intelligence. Case-based reasoning tries to solve new problems based on the solutions of similar problems from the past. Controlling the network traffic to remain within a fixed quota can be modeled as such a problem if the traffic patterns are recurring. Possible solutions can be derived from statistical data and altered to suit the new problems. When an untested solution is applied, the software supervises the execution and revises the solution accordingly, if the actual results deviate from the precalculated schedule.

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13

Nord, Malin, i Henrik Vestgöte. "Multi-touch in control systems : Two case studies". Thesis, Uppsala universitet, Informationssystem, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-144079.

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During the last thirty years the progress of multi-touch technology has been a hot topic of discussion. Despite this, it has not been deployed in anything more advanced than commercials, games and illustrations. We believe that the time has come for the technology to become a broader and more advanced field. It should even be feasible to introduce the multi-touch technology into important environments e.g. control rooms. Two project based case studies, involving multi-touch in different aspects, will be described and discussed respectively. The first case study discusses the introduction of a Microsoft Surface as a collaboration tool in a control room environment. A prototype was built and evaluated to see how well it could work in a stressful and complex area where collaboration between colleagues is vital. The second case study describes the development and possible deployment of a smaller multi-touch screen that would work as an extra input to the control system. Its purpose is to facilitate the navigation in a control system for the operators, thereby easing their cognitive load and making the control room a more comfortable working place. The research of the case studies was based on interviews with operators and developers. From the research result appliance methods and designs were developed, and prototypes were constructed out of the best ones. The prototypes were then analyzed and tested for later evaluation and discussion. To see, whether or not the new multi-touch prototypes would function well in a control system. The objective of this thesis is to attempt to introduce multi-touch technology in control systems

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14

Gunby, James Alexander. "Measurement errors in case-control and related studies". Thesis, University of Oxford, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.239324.

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15

鄧國樑 i Kwok-Leung Tang. "Urban design control: case study in Hong Kong". Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2002. http://hub.hku.hk/bib/B31980491.

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16

Grimshaw, Margaret. "Social control in teacher education : a case study". Thesis, University of Bath, 1985. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.767558.

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In this research I have examined the relationship between an aspect of teacher education and the ideology of social control. Taking the Professional Studies Credit of a B.Ed. Honours year course, I examine the ways in which the Credit serves to develop those qualities which support the dominant social order both overtly and implicitly. I suggest that both the planning and the implementation of the Credit take place within constraining parameters and that they embody contradictions and tensions, which correspond very broadly to developments in wider society. Use of the concepts of practical theoretical and hegemonic ideologies demonstrates, I believe, the ways in which different forms of control are transmitted and legitimated. Part of the research involves also an examination of certain Government Reports on Education. By looking at these I seek to understand how the underlying social, economic and political structures influence the ideologies, which are part of everyday perceptions about education. I use a form of discourse analysis, which I believe helps to provide some understanding of how educational common sense comes to be produced and how status is created. By doing this it is my intention to avoid separating the development of a particular course from the wider issues of power and control. However, I do not see the two aspects as causatively linked, but each as part of the same social and political whole. It is my intention to reveal the ideological contradictions underpinning both the Professional Studies Credit and the selected Government Reports. But the chief emphasis of this research is upon the mechanisms and strategies by which both the Professional Studies Credit and the Government Reports create meaning.

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17

Weinberg, Henri B. (Henri Bernard). "Correctness of vehicle control systems a case study". Thesis, Massachusetts Institute of Technology, 1996. http://hdl.handle.net/1721.1/40150.

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Tang, Kwok-Leung. "Urban design control : case study in Hong Kong /". Hong Kong : University of Hong Kong, 2002. http://sunzi.lib.hku.hk/hkuto/record.jsp?B25799411.

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19

Xu, Wenwei. "Enhancing model accuracy for control : two case studies /". free to MU campus, to others for purchase, 2002. http://wwwlib.umi.com/cr/mo/fullcit?p3074458.

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Dupont, A. "Predator control of diversity : case studies using microcosms". Thesis, University College London (University of London), 2017. http://discovery.ucl.ac.uk/1557898/.

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Predation is a major mode of interaction in natural environments, and predators have an important impact on prey evolution, community composition and food web complexity. Bacterivorous protists are key components of aquatic and terrestrial environments, as well as major drivers of bacterial diversity and community composition. When grazing on prokaryotes, protists impact interand intraspecific interactions, biomass production and biogeochemical flows. Furthermore, the prey’s ability to develop physiological and morphological defence mechanisms affects both bacterial diversity and predatory eukaryotes’ grazing ability, survival and distribution. While theoretical work usually analyses simple to partially complex predator-prey systems, practical studies focus are often limited to one prey and one predator species. Using a variety of ecologically and physiologically diverse bacterivorous protists, this study identifies the relationship between predator-prey interactions and its impact on species diversity. While bacterial communities are closely linked to their environment characteristics, protist diversity and distribution was shown to be dependent on both biotic and abiotic factors, and community composition differences driven by few major lineages. Similarly, bacterial communities submitted to varied protist predators were distinguished only by a handful of major lineages. In parallel, protist impact on bacterial diversity was highly modulated by prey community taxonomical composition and ecological strategies. Indeed, in this study, bacteria observed genotypic changes in line with short-term phenotypic plasticity resulting on the development of defence mechanisms against predators of distinct ecological niches. Predator-prey interactions in the light of diversity are far more complex than what closed microcosm experiments can translate, but they encompass valuable information applicable to natural systems.

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21

Chan, Mei-wan, i 陳美雲. "Control or care: a case study of a residential home for delinquent girls". Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1988. http://hub.hku.hk/bib/B31975239.

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Chan, Mei-wan. "Control or care : a case study of a residential home for delinquent girls /". [Hong Kong : University of Hong Kong], 1988. http://sunzi.lib.hku.hk/hkuto/record.jsp?B12841031.

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23

Dore, Shaun David. "Application of geometric nonlinear control in the process industries : a case study". Thesis, Imperial College London, 1993. http://hdl.handle.net/10044/1/7398.

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Lundgren, Ann-Marie. "Dygnsrytmens betydelse för ungdomars munhälsa : en-case-control studie". Thesis, Högskolan Dalarna, Vårdvetenskap med inriktning mot munhälsa, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:du-3767.

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Syftet med studien var att jämföra dygnsrytm samt kost - och munhygienvanor mellan ungdomar som uppvisar en kariesprevalens med dem som är kariesfria. Efter ett konsekutivt urval med jämn fördelning med avseende på kariesprevalens och kön, svarade 196 ungdomar i åldern 15-16 år vid ordinarie tandvårdsbesök på en enkät. Frågeområdena var förutom bakgrundsvariabler, sömn-, kost- och munhygienvanor. Studie visade med avseende på dygnsrytm att 37% var kvällsmänniskor, 13% var morgonmänniskor och hälften var neutrala. Ett samband påvisades mellan kariesprevalens och dygnsrytm, i gruppen kvällsmänniskor fanns en större del med karies. Det var mer vanligt att äta frukost och skolmat i kategorierna morgonmänniska och neutrala än bland kvällsmänniskorna. Måltiderna frukost och skolmat samt mjölk till dessa måltider var mer vanligt att förtära i den kariesfria gruppen än i gruppen med kariesprevalens. Att borsta tänderna två gånger per dag var vanligare bland kategorierna morgonmänniska respektive de neutrala än bland kvällsmänniskorna. Det var även vanligare i den kariesfria gruppen än i gruppen med karies

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25

San-Blas, Felipe. "A case study in nonlinear on-line optimal control". Thesis, Imperial College London, 2003. http://hdl.handle.net/10044/1/7344.

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26

Chatterjee, Kausik. "Mood after stroke : a cross-sectional case control study". Thesis, University of Newcastle upon Tyne, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.438408.

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Chu, Rong. "Bayesian adjustment for exposure misclassification in case-control studies". Thesis, University of British Columbia, 2007. http://hdl.handle.net/2429/32108.

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Measurement error occurs frequently in observational studies investigating the relationship between exposure variables and the clinical outcome. Error-prone observations on the explanatory variable may lead to biased estimation and loss of power in detecting the impact of an exposure variable. The mechanism of measurement error, such as whether or in what way the quality of data is affected by the disease status, is seldom completely revealed to the investigators. This increases uncertainty in assessing the consequences of ignoring measurement error associated with observed data, and brings difficulties to adjustment for mismeasurement. In this study, we consider situations with a correctly specified binary response, and a misclassified binary exposure. We propose a solution to conduct Bayesian adjustment to correct for measurement error subject to varying differentiality, including the nondifferential misclassification, differential misclassification and nearly nondifferential misclassification. Our Bayesian model incorporates the randomness of exposure prevalences and misclassification parameters as prior distributions. The posterior model is constructed upon simulations generated by Gibbs sampler and Metropolis-Hastings algorithm. Internal validation data is utilized to insure the resulting model is identifiable. Meanwhile, we compare the Bayesian model with maximum likelihood estimation (MLE) and simulation extrapolation (MC-SIMEX) methods, using simulated datasets. The Bayesian and MLE models produce accurate and similar estimates for odds ratio in describing the association between the disease and exposure, when appropriate assumptions regarding the differentially of misclassification are made. The 90% credible or confidence intervals capture the truth approximately 90% of the time. A Bayesian method corresponding to nearly nondifferential prior belief compromises between the loss of efficiency and loss of accuracy associated with other prior assumptions. At the end, we look at two case-control studies with misclassified exposure variables, and aim to make valid inference about the effect parameter.
Science, Faculty of
Statistics, Department of
Graduate

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28

Woolcott, Christy Gwen. "Bladder cancer and air pollution, a case-control study". Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp04/mq20715.pdf.

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29

Bonci, Angelica. "Collocations in Italian as L2 : a case-control study". Thesis, Royal Holloway, University of London, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.409398.

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30

Mohammed, Zeidan Ibrahim. "Host government control of MNEs : Squibb Egypt case study". Thesis, University of Hull, 1990. http://hydra.hull.ac.uk/resources/hull:4584.

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The socio-economic development of many developing countries depends heavily on the flow of foreign capital brought about by multinational enterprises' (MNE's) activities. However, there is evidence that the actual benefits derived by host countries from these enterprises are often less than expected. Accordingly, this clearly supports the need for an effective government control framework to increase the benefits of these foreign enterprises to the host country. This study therefore examines, both theoretically and empirically, the types of controls operated at present, with a view to establishing an appropriate framework for future control. A host government control framework consists basically of two complementary and integrated control processes: an entry control process to ensure that only those foreign enterprises which will be of benefit to the national economy are approved; and an operational control process to check that the project's operations are carried out in accordance with approved plans. In practice, the control mechanism focuses on the role of local accounting and reporting systems, and the role of the government auditor rather than other government bodies responsible for applying the control process. Egypt has been selected as the focus for the study, since many MNEs operate there under the open door economic policy, and it is believed that the many incentives given to attract foreign investment have allowed MNEs to gain greater benefits than they give to the country. Squibb Egypt, a foreign subsidiary in the pharmaceutical sector, is taken as a case study, in view of the importance of the sector to the Egyptian economy, and its increasing domination by foreign enterprises. Data have been collected through interviews from government departments and agencies dealing with MNEs in Egypt and Squibb Egypt. The result of the case study has indicated that Squibb Egypt has made only a modest contribution to the economy. This deficiency is attributable to the lack of the control system currently operated by the Egyptian government over MNEs. This provides a strong case for arguing that the adoption of a sound government control system is essential to alleviate many of the problems and deficiencies raised in this study, and to meet both national objectives and those of foreign enterprises.The research is divided into three main parts. The first, containing two chapters, examines the general relationship between a host government and the MNE, and describes a control framework model which could alleviate the problems arising from MNE entry and operations within a host country.Part two, which also contains two chapters, presents an overview of foreign investment in Egypt from 1952-1987, reviewing the open door policy and appraising its impact on the economy, and the control system currently operated by the Egyptian government.The empirical research is presented in the six chapters of part three, which examines the development of Squibb and the controls exercised over it, and evaluates the company's financial performance and its contribution to the Egyptian economy. Finally, recommendations are made to improve the evaluation and control over MNEs by host governments, with a view to maximising the benefits obtained from them.

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Moon, Jei Poong. "Parlimentary control of foreign policy : the South Korean case". Thesis, University of Sheffield, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.418644.

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32

O'Brien, Claire Margaret. "Antioxidants and peripheral arterial disease : a case-control study". Thesis, King's College London (University of London), 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.428704.

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33

Perolli, Korab, i Aos Abdeljabar. "Evaluation of peri-implantitis treatment. Retrospective case control study". Thesis, Malmö högskola, Odontologiska fakulteten (OD), 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:mau:diva-19629.

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Tandimplantat utsätts för både tekniska och biologiska komplikationer; de senare innefattar mukosit och periimplantit. Ett stort antal periimplantitbehandlingar har utvärderats, ofta i samband med bensubstitut. Det finns dock ingen konsensus idag om effektiv periimplantitbehandling.Syfte: Syftet med studien är att utvärdera och jämföra om skillnader i behandlingsresultat föreligger när periimplantit behandlas kirurgiskt med bensubstitut eller utan bensubstitut.Material och Metoder: Trettiofyra patienter (22 kvinnor, 12 män) behandlades varav 12 patienter med bensubstitut och 22 patienter utan bensubstitut.Av totalt 198 implantat har 193 utvärderats: Avseende bennivån (100 implantat) Avseende fickdjup (PPD) och blödning vid sondering (BOP) (160 implantat).Resultat: Kirurgisk behandling i form av mekanisk depuration och användning av bensubstitut har bidragit till vinst av bennivån med en statistisk signifikans (p ≤ 0,05). Dessutom kan en statistiskt signifikant förbättring (p ≤ 0,05) av PPD noteras bland patienter som behandlades med bensubstitut jämfört med patienter som behandlats utan bensubstitut.Konklusion: Av de patientfallen i studien är slutsatsen att användning av bensubstitut vid kirurgisk periimplantitbehandling resulterar i betydligt större vinst i bennivå och PPD reducering i jämförelse med endast kirurgisk behandling. Nyckelord: Bensubstitut, Periimplantit, Kirurgisk behandling.
Dental implants are subjected to both technical and biological complications; the latter ones comprise peri-implant mucositis and peri-implantitis. Numerous peri-implantitis treatments have been evaluated, often involving implantation of a bone graft. However, as of today, no consensus exists regarding effective peri-implantitis treatment.Aim: The aim of the study is to retrospectively evaluate if there are differences in treatment results after surgical peri-implantitis treatment with or without a bone graft.Material and Methods: Thirty-four patients (22 female, 12 male) were treated whereas 12 patients were treated with bone graft and 22 patients were treated without bone graft. Out of a total of 198 implants, 193 were evaluated regarding peri-implant bone level (100 implants) and probing pocket depth(PPD) and bleeding on probing (BOP) (160 implants).Results: Surgical treatment including mechanical debridement and implantation of a bone graft contributed to statistical significant (p ≤ 0,05) bone level gain in comparison to the non-grafted group. Additionally, statistically significant (p ≤ 0,05) improvement in PPD could be noted among patients treated with bone graft compared to patients treated without a bone graft.Conclusion: Of the present case series, it can be concluded that implantation of a bone graft during surgical peri-implantitis treatment, results in significant larger bone level gain and PPD reduction comparing to only surgical treatment.Keywords: Bone graft, Peri-implantitis, Surgical treatment.

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Zhang, Xiaoping. "Multi-scale system dynamics and control : two case studies /". free to MU campus, to others for purchase, 2001. http://wwwlib.umi.com/cr/mo/fullcit?p3013046.

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Denz, Rudolph Christopher. "Bureaucratic control in a collegial organization: a management case study". Thesis, Monterey, California : Naval Postgraduate School, 2013.

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Approved for public release; distribution is unlimited.
The Naval Postgraduate School is a unique academic institution whose structural configuration combines the bureaucratic functions of a military command with the traditional administrative functions of a university. This thesis focuses on the issues associated with the design and implementation ofthe formal management and administrative control systems of the organization. The data obtained during the research was used to develop a management case study that explores the school's organizational and control structure which is bureaucratic in design, yet supports an operating core whose roots lie in a collegial tradition. The case focuses on the potential for conflict that exists from the interaction of the two distinctly different organizational structures, perceived control environments, and cultures. Specifically, the case and subsequent analysis can be. Used to illustrate the potential for role related conflict when the faculty comes in contact with the school's control systems that are administered by the military support staff.

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Freshwater, Julie L. "Impact of Antimicrobial Use on the Resistance of Pseudomonas aeruginosa in the Intensive Care Unit Setting in a Large Academic Medical Center". The Ohio State University, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=osu1275443984.

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Peterson, Lloyd G. "Lean/flow design event a manufacturing cost reduction case study /". Online version, 2004. http://www.uwstout.edu/lib/thesis/2004/2004petersonl.pdf.

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Weyer, Karen. "Determining Appropriate Sample Size for Cases in a Case-Control Study Utilizing Proxy Respondents". University of Cincinnati / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1274195305.

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Leung, Ping Hung Karl Richard. "Domain modelling : with a case study in air traffic /". Hong Kong : University of Hong Kong, 1997. http://sunzi.lib.hku.hk/hkuto/record.jsp?B18635544.

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Ferreira, Silvana Margarida Benevides [UNIFESP]. "Determinantes de casos de recidiva em hanseníase no Estado de Mato Grosso". Universidade Federal de São Paulo (UNIFESP), 2010. http://repositorio.unifesp.br/handle/11600/9327.

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Made available in DSpace on 2015-07-22T20:49:52Z (GMT). No. of bitstreams: 0 Previous issue date: 2010
Introdução: O Estado de Mato Grosso situa-se como região hiperendêmica em hanseníase. O surgimento de casos de recidiva e, consequentemente, as possíveis resistências medicamentosas aos quimioterápicos específicos são vistos como uma das causas para ineficácia do tratamento. Objetivo: analisar a ocorrência de casos de recidiva diagnosticados em unidades especializadas do Estado de Mato Grosso quanto às características individuais, clínico-laboratoriais, epidemiológicas, terapêuticas e de organização de serviços. Método: trata-se de estudo epidemiológico desenvolvido em duas etapas, que incluem: análise de 323 registros de casos de recidiva em hanseníase no Sistema Nacional de Agravos de Notificação (SINAN/MT) diagnosticada em unidades básicas de saúde (UBs) e em unidades especializadas (UE), quanto aos aspectos clínico-laboratoriais e distribuição geográfica nos municípios do Estado de Mato Grosso no período de 2004-2006 e de um estudo caso-controle para identificar os fatores associados para a ocorrência de recidiva em hanseníase dos diagnósticos em UE nos municípios de Cáceres, Cuiabá, Diamantino, Rondonópolis e Várzea Grande do Estado, assim como, comparar as proporções das características clínico-laboratoriais durante o tratamento inicial e tratamento de recidiva. As variáveis foram classificadas quanto às características relacionadas ao indivíduo, à doença e ao serviço de saúde. Resultados: Dos casos registrados de hanseníase, no período de estudo, 20% foram registrados nas UE e 80% em UBs; dos casos de recidiva multibacilares, 37% foram diagnosticados com resultado de baciloscopia negativa [χ2 = 12,34 (ρ = 0,002]; 14% dos municípios apresentaram mais de cinco casos de recidiva com percentual entre 6 e 20% de todas as entradas. Verificou-se que os fatores associados à ocorrência de recidiva em hanseníase estão relacionados às condições de moradia: indivíduos com residência alugada (OR ajust = 4,1; IC 95%:1,43-12,04; p = 0,009), residentes em moradia de madeira/taipa (OR ajust = 3,2; IC 95%: 1,16-8,76; p = 0,025) e indivíduos residentes com cinco ou mais pessoas no domicílio (OR ajust = 2,1; IC 95%: 1,03-4,36; p = 0,043); transtorno de uso de álcool (OR ajust = 2,8; IC 95%: 1,17-6,79; p = 0,021); uso de tratamento irregular (ORajust = 3,8; IC 95%: 1,44-10,02; p = 0,007); não orientação sobre doença/tratamento (OR ajust = 2,6; IC 95%: 1,09-6,13; p = 0,032), dificuldade de acesso à unidade de saúde, ocasionada pelo uso de transporte coletivo (OR ajust = 5,5; IC 95%: 2,36-12,63; p = < 0,000), forma clínica (ORajust = 7,1; IC 95%: 2,48-20,52; p = < 0,000) e esquema terapêutico utilizado para o tratamento (ORajust = 3,7; IC 95%: 1,49-9,11; p = 0,005). Conclusão: As entradas de registros de recidiva em Mato Grosso no período de estudo são influenciadas pelo diagnóstico realizado em UBs. Os fatores associados à ocorrência de recidiva ultrapassam as questões relacionadas aos aspectos clínicos representados pela doença. Decorre, também, dos hábitos de vida, das condições socioeconômicas e dos aspectos ligados à organização de serviços de saúde.
Introduction: The State of Mato Grosso is classified as a hyperendemic region in leprosy. The emergence of cases of relapse and, consequently, potential resistance to specific chemotherapeutic medication is seen as one of the causes of ineffective treatment. Objective: To analyze the occurrence of relapse cases diagnosed in specialized units in the State of Mato Grosso in light of individual, clinicallaboratorial, epidemiological, and therapeutic characteristics, as well as aspects of the organization of the respective health services. Method: An epidemiological study developed in two stages, which included
TEDE
BV UNIFESP: Teses e dissertações

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The'berge, Marc W. "Three case studies of management information systems". Thesis, Monterey, California : Naval Postgraduate School, 1990. http://handle.dtic.mil/100.2/ADA238310.

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Thesis (M.S. in Information Systems)--Naval Postgraduate School, September 1990.
Thesis Advisor(s): Haga, William J. Second Reader: Zviran, Moshe. "September 1990." Description based on title screen as viewed on December 21, 2009. DTIC Identifier(s): Management Information Systems, Naval Operations, Data Bases, Instructional Materials, Decision Aids, Aviation Accidents, Antisubmarine Warfare, Naval Training, Local Area Networks, Theses. Author(s) subject terms: Case Studies, Database Management Systems, Local Area Networks, Decision Support. Includes bibliographical references. Also available in print.

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Kang, Sangwook Cai Jianwen. "Statistical methods for case-control and case-cohort studies with possibly correlated failure time data". Chapel Hill, N.C. : University of North Carolina at Chapel Hill, 2007. http://dc.lib.unc.edu/u?/etd,1244.

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Thesis (Ph. D.)--University of North Carolina at Chapel Hill, 2007.
Title from electronic title page (viewed Mar. 26, 2008). "... in partial fulfillment of the requirements for the degree of Doctor of Philosophy in the Department of Biostatistics, School of Public Health." Discipline: Biostatistics; Department/School: Public Health.

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Kwan, Yee-wan Elsa, i 關綺雲. "A case study of corporate crime control in Hong Kong: toys and children's products safety control". Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1994. http://hub.hku.hk/bib/B31977674.

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Kwan, Yee-wan Elsa. "A case study of corporate crime control in Hong Kong : toys and children's products safety control /". [Hong Kong] : University of Hong Kong, 1994. http://sunzi.lib.hku.hk/hkuto/record.jsp?B13787561.

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Sargut, Kamil Umut. "Application Of Statistical Process Control To Software Development Processes Via Control Charts". Master's thesis, METU, 2003. http://etd.lib.metu.edu.tr/upload/1270081/index.pdf.

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The application of Statistical Process Control (SPC) to software processes has been a challenging issue for software engineers and researchers. Although SPC is suggested for providing process control and achieving higher process maturity levels, there are very few resources that describe success stories, implementation details, and implemented guidelines for applying SPC to specific metrics. In this thesis the findings of a case study that is performed for investigating the applicability of SPC to software metrics in an emergent CMM Level 3 software organization are presented. As being one of the basic and most sophisticated tools of SPC, control charts are used for the analysis. The difficulties in application of Statistical Process Control to a CMM Level 3 organization are observed by using the existing data of defect density, rework percentage, productivity and review performance metrics and relevant suggestions are provided for dealing with them. Finally the analysis results are summarized and a guideline is prepared for software companies who want to utilize control charts by using their existing metric data.

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Naidoo, Sudeshi. "Fetal alcohol syndrome in the Western Cape : craniofacial and oral manifestations : a case control study". Thesis, Stellenbosch : Stellenbosch University, 2003. http://hdl.handle.net/10019.1/53425.

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Dissertation (PhD)--Stellenbosch University, 2003.
ENGLISH ABSTRACT: Introduction: Fetal alcohol syndrome (FAS) consists of multi-system abnormalities and is caused by the excessive intake of alcohol during pregnancy. The teratogenic effect of alcohol on the human fetus has now been established beyond reasonable doubt and FAS is the most important human teratogenic condition known today. The syndrome, first described by Lemoine in1968 in the French literature and in the English literature by Jones and Smith in 1973, has since been corroborated by numerous animal and human studies. This study has grown out of several epidemiological, prenatal and infant studies in areas of the Western Cape that are currently being undertaken by the Foundation for Alcohol Related Research (FARR). Preliminary data from studies in Wellington have confirmed that a significant proportion of school-entry children have FAS. The prevalence ofF AS in this community exceeds that for Down syndrome by a factor of30 times. The frequency ofFAS in high-risk populations of the Western Cape is the highest reported anywhere in the world. With this background, and the paucity of FAS literature related to dentistry, the aim of this study was to determine the craniofacial and oral manifestations ofF AS in a sample of school-going children in the Western Cape. Methodology: This study is a descriptive, case-control, cross-sectional study using a random cluster sampling method. On the day of examination, children were weighed, and their height and head circumference were measured. They then had photographs and radiographs taken, followed by an oral examination. For each child, the following information was recorded on the data capture sheet: date of birth, gender, head circumference, weight and height, enamel opacities, dental fluorosis, plaque index, gingival bleeding index, dentition status, oral mucosal lesions and dentofacial anomalies. Results: The total sample of90 children with diagnosed FAS and 90 controls, were matched for age, gender and social class. There were no significant age differences between the two groups (p=0.3363) and the mean ages were 8.9 and 9.1 for the FAS and control groups respectively. Head circumference (HC) differed significantly between the two groups (pAFRIKAANSE OPSOMMING: Fetale alkoholsindroom (FAS) bestaan uit multisisteem abnormaliteite en word veroorsaak deur oormatige inname van alkohol tydens swangerskap. Die teratogeniese uitwerking van alkoholop die menslike fetus word nie meer betwyfel nie en FAS is die belangrikste menslike teratogeniese toestand tans bekend. Die sindroom, soos aanvanklik deur Jones en Smith in 1973 beskryf, is sedertdien deur vele studies op mens en dier bevestig. Hierdie studie het gegroei uit vele epidemiologiese-, prenatale- en kleuterstudies in dele van die Weskaap wat tans onderneem word deur die Stigting vir Alkoholverwante Navorsing. Voorlopige data van die studies in Wellington bevestig dat 'n betekenisvolle deel van skoolbeginners FAS het. Die prevalensie van FAS in hierdie gemeenskap oortref dié van Down se sindroom met 'n faktor van 30. Die frekwensie van FAS in die Weskaap is die hoogste wat in die wêreld gerapporteer is. Met hierdie agtergrond, en die skaarste aan FAS literatuur wat op tandheelkunde betrekking het, was die doel van hierdie studie om die kraniofasiale en mondmanifestasies van fetale alkoholsindroom in 'n monster van skoolkinders in die Weskaap te ondersoek. Metodologie: Hierdie studie was 'n beskrywende, gevallebeheerde deursneestudie waarin 'n lukrake gebondelde monstermetode gebruik is. Op die dag van die ondersoek is die kinders geweeg en hulle lengte en kopomtrek bepaal. Hierna is foto's en x-straalopnames geneem, gevolg deur 'n mondondersoek. Die volgende inligting is vir elke kind aangeteken: geboortedatum, geslag, kopomtrek, massa en lengte, glasuur-opasiteite, tandfluorose, plaakindeks, gingivale bloedingsindeks, gebitstatus, mukosale letsels en dentofasiale anomalieë. Resultate: Die totale monster, bestaande uit 90 kinders met gediagnoseerde fetale alkoholsindroom en 90 bypassende kontroles, is vergelyk ten opsigte van ouderdom, geslag en sosiale klas. Daar was geen betekenisvolle ouderdomsverskille tussen die twee groepe nie (p- =0.3363). Kopomtrek het betekenisvol tussen die twee groepe verskil (p<0.0001), en die drie fotografiese diagnostiese afmetings is almal beïnvloed deur kopomtrek. Die prevalensie van glasuur-opasiteite tussen die FAS- en kontrolegroep was nie betekenisvol nie en het rondom 15% vir beide gewissel. Die opasiteite is hoofsaaklik gesien in maksillêre sentrale snytande en mandibulêre eerste molare. Meer as driekwart van beide groepe het plaak getoon, en byna tweederdes het gingivale bloeding met sondering gehad. Die gevallegroep het statisties betekenisvol meer (p

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47

Denz, Rudolph Christopher. "Bureaucratic control in a collegial organization a management case study /". Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1995. http://handle.dtic.mil/100.2/ADA301317.

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Kinyanda, Eugene. "Deliberate self-harm in urban Uganda – a case-control study". Doctoral thesis, Norwegian University of Science and Technology, Department of Psychology, 2006. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-978.

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Background: Deliberate self-harm (DSH) is both a personal problem and a public health problem not only in the West but also in sub-Saharan Africa including Uganda. Generally however, there is an absence of suicide interventions on the continent and linked to this problem an absence of recent studies on suicidal behaviour from Africa. To partly address these shortcomings, this present project examined the demographic, social and psychological characteristics of deliberate self-harm in the urban environment of Uganda.

Methods of the study: One hundred cases of deliberate self-harm attending three general hospitals in the Ugandan capital of Kampala were compared with 300 non-DSH in-patient controls from the participating hospitals. Both the cases and controls were interviewed using a Luganda translated version of the modified European Parasuicide Interview Schedule I (EPSIS I; Kerkhof et al. 1989). Two study samples were constituted where sample 1 were the cases and sample 2 the controls. For purposes of DSH repetition part of the study, sample 1 was split into the ‘suicide repeaters’ and the ‘non-repeaters’. Data on; socio-demographics, methods of DSH, precipitating factors of present act of DSH, life events, psychological factors and DSH repetition was collected.

Analysis: The statistical package SPSS 8.0 was used both at data entry and analysis. Analysis involved the generation of frequencies, means and mean rank scores and cross-tabulations using Pearson’s Chi-square test, Fischer’s Exact test and the independent t-test. Multivariate analysis using logistical regression was used to determine the independent effect of various variables in suitably specified models. The level of significance was set at 0.05.

Results: Results revealed that DSH in urban Uganda in a hospital based population was predominantly a problem for male (63%), adolescents and young adults (50%). The predominant method of DSH used was by organophosphate poisoning (45%). The main psychiatric diagnoses associated with DSH in this population were; adjustment disorder (35%), acute stress reaction (18%) and depression (23%).

Disturbed interpersonal relationships (with a partner/lover, parent(s) or children) were a precipitant in 65% of the DSH cases. The number of negative life events in; Childhood (categories of parents, significant others, and personal), Later in life (category of partner), and Last year (category personal and the total number of life events) were significantly associated with DSH in this study. The psychological factors found to be associated with DSH were; global psychological distress, hopelessness and state anger but not depression, trait anger nor alcohol abuse. Suicidal intent was found to be independently correlated with both depression and hopelessness.

Twenty five percent of the DSH cases in this study were repeaters with the socio-demographic factors associated with repetition of DSH including; being single, having children and staying alone or with parents. Other factors found to be associated with DSH repetition were; the number of negative life events in childhood and in the last year, global psychological distress and trait anger but not depression, hopelessness nor state anger.

Conclusion: The picture of DSH in urban Uganda is similar to a great extent to that observed elsewhere on the African continent and in the West. There are however important differences particularly with the picture of DSH as seen in the West.

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Bao, Rui He. "Case-based reasoning for automotive engine electronic control unit calibration". Thesis, University of Macau, 2009. http://umaclib3.umac.mo/record=b2099648.

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Martínez, Arturo. "Robust control : PID vs. fractional control design, a case study". Thesis, 2006. http://hdl.handle.net/2429/17568.

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This thesis presents a systematic procedure to design PID and CRONE controllers to regulate the hypnotic state of anesthesia with the intravenous administration of propofol. The hypnotic state of the patient is assessed by means of the WAV index, a processed hypnotic index based on a deterministic analysis of the EEG. The objective of the controllers is to provide an adequate drug administration regime of propofol, depending on the hypnotic set point, to avoid under or over dosage of the patients. Propofol is assumed to be administered by a commercial Graseby 3400 infusion pump. The two model-based controllers are designed to compensate for the patients inherent drug-response variability (uncertainty), to achieve good output disturbance rejection, and to attain good set point response. The drug-response model consists of two parts: a pharmacokinetic model that characterizes the drug movement in the body, and pharmacodynamic model that relates the drug concentration in the brain to the WAV hypnotic index. An anti-windup scheme is also implemented to protect the system against performance degradation in the event of actuator saturation. The performance of the controllers is assessed by calculating typical time domain measures (overshoot, settling and rise times), and using the median performance error, median absolute performance error, divergence, and wobble of the system's output. Overall, the CRONE controller was shown to have better output disturbance rejection, and to be less sensitive to the drug-response variability of the patients.
Applied Science, Faculty of
Electrical and Computer Engineering, Department of
Graduate

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