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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
91

Safety and Stability of Samples Stored on Filter Paper for Molecular Arbovirus Diagnosis

Bringeland, Emelie January 2021 (has links)
Expanding urbanization, climate change, and population growth contribute to increased transmission and spread of arthropod-borne viruses (arboviruses), many of which cause severe disease in humans. Pathogenic arboviruses include dengue, Zika, tick-borne encephalitis, and sindbis viruses, which together threaten more than half the global population. Thus, there is a constant need for safe, specific, and sensitive molecular tests to identify early-stage infections for accurate diagnosis and molecular epidemiological data for disease prevention and control. The study tested the biosafety of using FTA™ cards when working with pathogenic arboviruses by conducting an infectivity assay using sindbis virus. Conditions for RNA extraction and storage of arboviruses on FTA were analyzed by measuring viral RNA (vRNA) stability using a SYBR-Green, Pan-Flavi RT-qPCR method composed of degenerate primers able to detect a variety of flaviviruses. Data from a Pan-Flavi RT-qPCR study comprising of 222 clinical blood and serum samples collected from a 2018 dengue virus outbreak in Hanoi (Vietnam) was analyzed to establish applicability of FTA for molecular epidemiology and diagnosis. Results showed that sindbis virus infectivity was inhibited by FTA-adsorption. FTA-adsorbed arboviruses were extracted with the highest yield using Trizol extraction and were preserved at storage at 4-20ºC for up to 30 days. The results showed that clinical blood samples acquired higher yields of vRNA for molecular testing than serum samples and that it may be possible to perform sequencing for genomic analysis. The study suggests that FTA cards may facilitate the storage and transportation of adsorbed arboviruses for downstream molecular epidemiological and diagnostic tests.
92

Blood on FTA™ Paper: Does Punch Location Affect the Quality of a Forensic DNA Profile?

Carter, Megan Elizabeth 06 March 2013 (has links)
Indiana University-Purdue University Indianapolis (IUPUI) / Forensic DNA profiling is widely used as an identification tool for associating an individual with evidence of a crime. Analysis of a DNA sample involves observation of data in the form of an electropherogram, and subsequently annotating a DNA “profile” from an individual or from the evidence. The profile obtained from the evidence can be compared to reference profiles deposited in a national DNA database, which may include the potential contributor. Following a match, a random match probability is calculated to determine how common that genotype is in the population. This is the probability of obtaining that same DNA profile by sampling from a pool of unrelated individuals. Each state has adopted various laws requiring suspects and/or offenders to submit a DNA sample for the national database (such as California’s law that all who are arrested must provide a DNA sample). These profiles can then be associated with past unsolved crimes, and remain in the database to be searched in the event of future crimes. In the case of database samples, a physical sample of the offender’s DNA must be kept on file in the laboratory indefinitely so that in the event of a database hit, the sample is able to be retested. Current methods are to collect a buccal swab or blood sample, and store the DNA extracts under strict preservation conditions, i.e. cold storage, typically -20° C. With continually increasing number of samples submitted, a burden is placed on crime labs to store these DNA extracts. A solution was required to help control the costs of properly storing the samples. FTA™ paper was created to fulfill the need for inexpensive, low maintenance, long term storage of biological samples, which makes it ideal for use with convicted offender DNA samples. FTA™ paper is a commercially produced, chemically treated paper that allows DNA to be stored at room temperature for years with no costly storage facilities or conditions. Once a sample is required for DNA testing, a small disc is removed and is to be used directly in a PCR reaction. A high quality profile is important for comparing suspect profiles to unknown or database profiles. A single difference between a suspect and evidentiary sample can lead to exclusion. Unfortunately, the DNA profile results yielded from the direct addition have been unfavorable. Thus, most crime laboratories will extract the DNA from the disc, leading to additional time and cost to analyze a reference sample. Many of the profiles from the direct addition of an FTA™ disc result in poor quality profiles, likely due to an increase in PCR inhibitors and high concentrations of DNA. Currently, standardized protocols regarding the recommended locations for removal of a sample disc from a bloodspot on an FTA™ card does not exist. This study aims to validate the optimal location by comparing DNA profiles obtained from discs removed from the center, halfway, and edge locations of a bloodspot from 50 anonymous donors. Optimal punch location was first scored on the number of failed, partial or discordant profiles. Then, profile quality was determined based on peak characteristics of the resulting DNA profiles. The results for all three disc locations were 5.3% failed amplifications, 4.2% partial amplifications, and one case of a discordant profile. Profile quality for the majority of the samples showed a high incidence of stutter and the absence of non-template adenylation. Of the three disc locations, the edge of the blood stain was ideal, due to a presumably lower concentration of DNA and likely more dilute amount of the PCR inhibitor heme. Therefore, based on the results of this study, there is a greater probability of success using a sample from the edge of a blood stain spotted in FTA™ paper than any other location of the FTA™ card.
93

Applying System-Theoretic Accident Model and Processes (STAMP) to Hazard Analysis

Song, Yao 04 1900 (has links)
<p>Although traditional hazard analysis techniques, such as failure modes and effect analysis (FMEA), and fault tree analysis (FTA) have been used for a long time, they are not well-suited to handling modern systems with complex software, human-machine interactions, and decision-making procedures. This is mainly because traditional hazard analysis techniques rely on a direct cause-effect chain and have no unified guidance to lead the hazard analysis. The Systems Theoretic Accident Model and Process (STAMP) is based on systems theory to try to find out as much as possible about the factors involved in a hazard, and with providing clear guidance as to the control structure leading to the hazard.</p> <p>The Darlington Nuclear Power Generating Station was the first nuclear plant in the world in which the safety shutdown systems are computer controlled. Although FTA and FMEA have already been applied to these shutdown systems, Ontario power generation felt that it is still useful to try recent advances to evaluate whether they can improve on the previous hazard analysis.</p> <p>This thesis introduces the two most common traditional techniques of hazard analysis, FTA and FMEA, as well as two systemic techniques, STPA (which is a hazard analysis method associated with STAMP), and the Functional Resonance Accident Model (FRAM). The thesis also explains why we chose STPA to apply to the Darlington Shutdown System case, and provides an example of the application as well as an evaluation of its use compared with FMEA and FTA.</p> / Master of Applied Science (MASc)
94

South Africa and Japan - a bureaucratic policy analysis

Magwaza, Mayibuye Matthew 12 1900 (has links)
Thesis (MA)-- Stellenbosch University, 2013. / ENGLISH ABSTRACT: This study applies a modified bureaucratic policy process model to analyse contemporary South African – Japanese relations, particularly in regards to a proposed Economic Partnership Agreement, and the experiences of Japanese agencies within South Africa. South Africa and Japan are major trade partners, and the Japanese government has a significant presence in the African aid scene via the Tokyo International Conference on African Development (TICAD), and through the works of the Japan International Cooperation Agency (JICA). South African – Japanese relations have been documented in a modest but respectable fashion by a range of researchers, including Alden, Skidmore and Osada. The bureaucratic policy process model has been used in an array of studies on international relations and decision making, notably by Graham Allison. However, it has not been previously applied to South African – Japanese relations. As a result, there is a dearth of information on how bureaucratic dynamics affect Japanese – South African relations. In response to this, a modified bureaucratic policy process model is used to analyse contemporary South African – Japanese governmental relations. A literature review of primary and secondary sources is undertaken, consisting of a historical review of South African – Japanese relations. Following this, a brief overview of contemporary literature on South African – Japanese relations is performed. This includes both secondary sources and primary sources relating to government bureaucracies current priorities and strategies. Material on TICAD is included in this section. Interviews with government officials from both the Japanese and South African governments are carried out using a modified snowball sampling system. The interviews provide insights into the different bureaucratic organization’s priorities and programmes, as well as their relationships with other organizations. From this data, two emergent themes are addressed: the failure of a contemplated Free Trade Agreement / Economic Partnership Agreement and the way in which Japanese agencies, particularly JICA, operate within the South Africa context. It is found that the FTA failed due to welfare concerns from the South African Department of Trade and Industry, as well as greater complications relating to trade agreements in general. These greater complications stem from the involvement of regional bodies such as the South African Customs Union. Japanese agencies are found to be constrained within South Africa by a lack of resources as well as by the independent and somewhat sceptical attitude of South African government agencies towards Japanese aid efforts. It is proposed that the relevance of extra national bureaucracies to the decision making process surrounding the FTA has implications for deploying the bureaucratic policy process model, which has generally only considered national bureaucracies in discussing how decisions are made. It is further suggested that South African trade deals are complicated by the country’s location within the South African Customs Union and the South African Development Community, and the consequent need to consult and negotiate with third parties who are likely to be impacted by such deals. Finally, it is suggested that because both South Africa and Japan face significant, but different economic challenges, they should prioritise improving their economic relations. / AFRIKAANSE OPSOMMING: Hierdie studie het ’n aangepaste burokratiese beleidsprosesmodel gebruik om die hedendaagse betrekkinge tussen Suid-Afrika en Japan te ontleed, veral wat betref ’n voorgestelde ekonomiese vennootskapsooreenkoms tussen die twee lande en die ervarings van Japannese agentskappe in Suid-Afrika. Suid-Afrika en Japan is groot handelsvennote, en die Japannese regering handhaaf ’n beduidende teenwoordigheid op die Afrika-hulptoneel deur middel van die Tokiose Internasionale Konferensie oor Afrika-ontwikkeling (TICAD) en die werk van die Japannese Internasionale Samewerkingsagentskap (JICA). Verskeie navorsers, waaronder Alden, Skidmore en Osada, het die betrekkinge tussen Suid-Afrika en Japan al op beskeie dog aansienlike wyse beskryf. Die burokratiese beleidsprosesmodel is al in ’n rits studies oor internasionale betrekkinge en besluitneming gebruik, in die besonder deur Graham Allison. Tog is dit nog nooit voorheen op betrekkinge tussen Suid-Afrika en Japan toegepas nie. Dus bestaan daar weinig inligting oor hoe burokratiese dinamiek die betrekkinge tussen hierdie twee lande raak. In antwoord hierop is ’n aangepaste burokratiese beleidsprosesmodel dus gebruik om die hedendaagse staatsbetrekkinge tussen Suid-Afrika en Japan te ontleed. Eerstens is ’n literatuuroorsig van primêre en sekondêre bronne onderneem wat uit ’n historiese oorsig van betrekkinge tussen Suid-Afrika en Japan bestaan het. Daarná is ’n oorsig van kontemporêre literatuur oor die verhoudinge tussen die twee lande onderneem. Dít het sowel sekondêre as primêre bronne met betrekking tot die huidige prioriteite en strategieë van staatsburokrasieë ingesluit. Hierdie afdeling sluit ook materiaal oor TICAD in. Onderhoude met staatsamptenare van die Japannese sowel as die Suid-Afrikaanse regerings is met behulp van ’n aangepaste stelsel van sneeubalsteekproefneming gevoer. Die onderhoude bied insig in die verskillende burokratiese organisasies se prioriteite en programme, sowel as hul verhoudings met ander organisasies. Twee temas wat uit hierdie data na vore gekom het, is vervolgens bespreek: die mislukking van ’n beoogde vryehandel-/ekonomiese vennootskapsooreenkoms, en die funksionering van Japannese agentskappe, veral JICA, in die Suid-Afrikaanse konteks. Daar word bevind dat die vryehandelsooreenkoms misluk het weens welsynsbesware van die Suid-Afrikaanse Departement van Handel en Nywerheid, sowel as groter komplikasies met betrekking tot handelsooreenkomste in die algemeen. Hierdie groter komplikasies hou verband met die betrokkenheid van streeksliggame soos die Suider-Afrikaanse Doeane-unie. Voorts blyk Japannese agentskappe in Suid-Afrika aan bande gelê te word deur ’n gebrek aan hulpbronne, sowel as Suid-Afrikaanse staatsagentskappe se onafhanklike en effens skeptiese houding jeens Japannese hulppogings. Die studie doen aan die hand dat die relevansie van bykomende nasionale burokrasieë in die besluitnemingsproses oor die vryehandelsooreenkoms bepaalde implikasies inhou vir die gebruik van die burokratiese beleidsprosesmodel, wat meestal slegs rekening hou met enkele nasionale burokrasieë se rol in besluitneming. Voorts blyk dit dat Suid-Afrikaanse handelstransaksies bemoeilik word deur die land se lidmaatskap van die Suider-Afrikaanse Doeane-unie en die Suider-Afrikaanse Ontwikkelingsgemeenskap, en die gevolglike behoefte om oorleg te pleeg met derde partye wat waarskynlik deur sulke transaksies geraak sal word. Laastens word aangevoer dat aangesien Suid-Afrika en Japan met beduidende dog verskillende ekonomiese uitdagings te kampe het, die verbetering van ekonomiese betrekkinge tussen die twee lande nou voorrang behoort te geniet.
95

Regional integration in the COMESA-EAC-SADC Tripartite Free Trade Area and the importance of infrastructure development in promoting trade and reducing poverty

Daniels, Cecily-Ann Jaqui Monique January 2012 (has links)
No description available.
96

Regional integration in the COMESA-EAC-SADC Tripartite Free Trade Area and the importance of infrastructure development in promoting trade and reducing poverty

Daniels, Cecily-Ann Jaqui Monique January 2012 (has links)
No description available.
97

Regional integration in the COMESA-EAC-SADC Tripartite Free Trade Area and the importance of infrastructure development in promoting trade and reducing poverty

Daniels, Cecily-Ann Jaqui Monique January 2012 (has links)
Magister Legum - LLM / South Africa
98

Fuzzy Time-Delay Model in Fault-Tree Analysis for Critical Path Method

Alsaqqa, Obada 21 May 2015 (has links)
No description available.
99

國際競爭法合作協定與經貿協定中競爭規範之研究-兼談國營事業競爭中立議題 / A Study on Antitrust Cooperation Agreements and the Competition Chapters in Trade Agreements - Also on Competitive Neutrality Issues of SOEs

吳孟洲, Wu, Meng-Zhou Unknown Date (has links)
隨著世界各國開放市場,事業間的競爭已步入國際化,是以競爭法制與政策也必須國際化,然而各國間競爭法規範的調和並未隨著經貿自由化而自然達成。本文點出競爭法與國際接軌的重要性,進一步檢視各國就競爭法案件在單邊、雙邊、複邊等層次將面臨哪些執法上的問題。又因國際反競爭案件越趨頻仍,競爭法主管機關間的合作需求隨之提高,究竟在執法合作上可能面臨哪些困難與限制,未來在合作上發展的趨勢如何,本文將循序漸進加以探討。目前國際間迄未形成一套強勢的競爭法制,世界貿易組織(World Trade Organization, WTO)亦放棄在杜哈談判回合處理競爭議題,然經貿自由化對國際競爭法制仍持續注入新元素。譬如各國簽訂之自由貿易協定與區域經濟整合,多設有競爭相關章節,並開始關注國營事業涉及的反競爭問題(即競爭中立的問題),此等新發展亦屬本文探討之範圍。 / Along with the trend of trade liberaliztion, the competition among enterprises has gone global. However, the competition rules seem to have no chance to reach international coordination in the near future. This article emphasizes that it’s important for a nation to coordinate its own competition law with other countries. Thus, the issues of competiton law enforcement at unilateral level, bilateral level, plurilateral level, regional level, and mutilateral level are also well discussed in this article. Due to the increasing number of anti-competition cases, the need for enforcement cooperation has risen. As a result, this article spends many efforts on recognizing the restraints and obstacles when cooperating with other competition authorities, trying to find the solutions to the problems of cooperation. Despite the fact that WTO failed to deal with international competition issues, there are many ambitious FTAs and reginal trade agreements trying to make common competition rules, which induce new elements into the field of international competition laws and policies. For exaples, TPP and many FTAs are in the negotiation of competitive neutrality requirement in the draft agreements. Such new development will not be excluded when speaking of international competition laws and policies.
100

L'action extérieure de l'Union Européenne en faveur du renforcement du regime des droits de propriété intellectuelle en Chine / The European Union’s external action in favor of strengthening the intellectual property rights regime in China

Kang, Su-Ju 27 April 2016 (has links)
Malgré l’amélioration du régime des droits de propriété intellectuelle (DPI) en Chine après l’accession de celle-ci à l’Organisation mondiale du commerce (OMC) en 2001, la question relative aux DPI demeure l’un des « sujets de vive préoccupation » dans le commerce sino-européen. Selon la stratégie européenne visant à assurer le respect des DPI dans les pays tiers, adoptée en 2005 et renouvelée en 2014, la Chine est ciblée par la Commission européenne comme le premier pays tiers dans lequel les autorités locales ne prennent pas de mesure efficace pour s’attaquer aux problèmes de violations des DPI. En raison des enjeux politiques et économiques importants pour l’UE, son intervention est nécessaire pour améliorer le régime des DPI et l’environnement de l’investissement en Chine. L’analyse de l’action extérieure de l’UE s’appuie sur l’étude des instruments auxquels elle recourt en vue de renforcer la protection et le respect des DPI en Chine. L’objet de notre recherche est d’examiner la manière dont l’Union choisit d’exploiter les instruments à géométrie variable au sein des enceintes multilatérale et bilatérale. Deux axes distincts mais complémentaires orientent la mise en œuvre de l’action extérieure de l’UE vis-à-vis de la Chine : l’approche coopérative, d’une part, et de l’approche conventionnelle, d’autre part. L’approche coopérative vise d’abord à rapprocher le régime juridique chinois des standards les plus élevés du droit de l’UE. En dépit d’un certain nombre de difficultés limitant l’efficacité de l’action extérieure de l’UE, la coopération bilatérale avec la Chine permet de contribuer à l’amélioration du régime juridique chinois. La convergence normative devrait ensuite faciliter l’apparition d’une approche commune entre l’UE et la Chine sur le plan conventionnel. Il importe à cet égard de souligner la position divergente de la Chine face à la promotion de l’UE, par la voie conventionnelle, d’un renforcement de la protection et du respect des DPI. Malgré la convergence accrue des positions européenne et chinoise favorables à la protection « ADPIC-plus » des DPI, la Chine se montre réticente voire hostile envers les initiatives conventionnelles de l’UE tendant à renforcer les mesures relatives au respect des DPI. / Despite the improvement of China’s intellectual property rights (IPR) regime after this country’s World Trade Organization (WTO) accession in 2001, the IPR remains one of “major concerns” in Sino-European trade relation. According to European strategy for the enforcement of intellectual property rights in third countries, adopted in 2005 and renewed in 2014, China is identified by the European Commission as first priority country, in which the local authority does not take effective measures to tackle the problems caused by IPR violations. Taking into account the EU’s important political and economic concerns, his action is necessary in order to improve the IPR regime and the investment environment in China. The analysis of EU’s external action is based on the instruments used to strengthen IPR’s protection and enforcement in China. The purpose of our research is to examine the EU’s method to use the different instruments within the multilateral and bilateral fora. Two distinct but complementary axes orientate the undertaking of EU’s external action vis-à-vis China: cooperative approach, on the one hand, and the conventional approach, on the other hand. Firstly, the cooperative approach aims to bring Chinese legal system closer to higher standards in EU law. In spite of certain difficulties limiting the efficacy of EU external action, the bilateral cooperation with China can contribute to a better legal system in China. Then, the normative convergence should be able to facilitate the emergence of a common approach between the EU and China in the conventional framework. In this respect, it is important to emphasis Chinese divergent position with regard to EU’s conventional approach aiming to strengthen IPR protection and enforcement. Despite the increasing convergence of European and Chinese positions favorable toward “TRIPs-plus” protection, China seems reluctant even hostile to EU’s conventional initiatives intending to strengthen IPR enforcement measures.

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