• Refine Query
  • Source
  • Publication year
  • to
  • Language
  • 377
  • 101
  • 45
  • 24
  • 14
  • 14
  • 14
  • 14
  • 14
  • 12
  • 7
  • 5
  • 4
  • 3
  • 2
  • Tagged with
  • 708
  • 708
  • 147
  • 144
  • 99
  • 93
  • 91
  • 79
  • 77
  • 70
  • 69
  • 68
  • 60
  • 60
  • 50
  • 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.
211

Heavy metals in South African medicinal plants.

Street, Renée Anne. January 2008 (has links)
Plants are able to take up and accumulate certain environmental contaminants such as heavy metals. When the plants are ingested by man, these contaminants are transferred along the food chain. Due to the poorly regulated medicinal plant trade in South Africa, many opportunities exist for heavy metal contamination of medicinal plants namely contaminated harvest sites as well as poor drying, processing, storage, transport and manufacturing conditions. The concentrations of five heavy metals (As, Cd, Co, Ni, Pb) and six microelements (B, Cu, Fe, Mn, Mo, Zn) were determined in some commonly used South African medicinal plants obtained from street markets. Elemental content was determined using inductively coupled plasma optical emission spectrophotometry (ICP-OES). Some of the medicinal plant samples investigated contained As and Cd at levels exceeding the World Health Organization limits of 1 and 0.3 mg kg-1 respectively. Lead and Ni were detected in all the samples. Elevated Fe and Mn levels were recorded in certain plant species. The results revealed multiple metal contamination in some medicinal plant parts sold in local markets and is thus grounds for concern. The effects of Cd application on growth parameters of some medicinal plant species belonging to the Hyacinthaceae (Albuca setosa, Eucomis autumnalis, Eucomis humilis, Merwilla plumbea) gave insight into heavy metal accumulation and distribution in these species. Application of Cd at 5 mg l-1 over a 12 week period reduced growth in A. setosa. The medicinally used A. setosa bulbs accumulated 37 mg kg-1 Cd after 12 weeks. Cadmium application at 2 mg l-1 over a six week period had no effect on growth parameters of E. autumnalis or E. humilis. However, a substantial difference in total Cd accumulation was detected in the plants (40.2 and 15.3 mg kg-1 respectively). Cadmium application at 2 mg l-1 significantly reduced the fresh weight of leaves, bulbs and roots of M. plumbea. Although most of the Cd was stored in the roots, the medicinally used bulbs accumulated up to 11.6 mg kg-1 when applied at 10 mg l-1. The antagonistic effect between Cd and Zn treatments and their effect on micronutrient distribution in M. plumbea were investigated. Five treatments were evaluated: (1) Hoagland’s nutrient solution (HS) (control) (2) HS + Cd 2 mg l-1 (single) (3) HS + Cd 2 mg l-1 + Zn 50 mg l-1 (combination) (4) HS + Cd 2 mg l-1 + Zn 100 mg l-1 (combination) (5) HS + Cd 2 mg l-1 + Zn 150 mg l-1 (combination). Cadmium readily accumulated in leaves, bulbs and roots of M. plumbea when supplied at 2 mg l-1. Zinc at 50 mg l-1 led to increased Cd accumulation. However, further increases in Zn concentration showed an antagonistic effect of Zn on Cd uptake and accumulation. Thus, increasing Zn levels in soils may be favourable for reducing toxic Cd accumulation in M. plumbea plants. Boron was not significantly affected by the addition of Cd to the media. However, with an increase in Zn, leaf B content increased while the B content in the bulbs and roots decreased. Copper and Mo levels were not significantly affected by treatments with Cd or Cd/Zn combinations. Compared to the control, Cd and Cd/Zn applications caused an increase in Mn content in leaves, bulbs and roots. Iron levels of M. plumbea were not significantly affected by Cd in the media. However, with an increase of Zn in the Cd-containing media, Fe content in the leaves, bulbs and roots increased. Tulbaghia violacea is one of the few medicinal plants that is also frequently used as a leafy vegetable. Application of Cd at 2 and 5 mg l-1 to T. violacea of varying sizes (small 8 - 10 g, medium 16 - 20 g, large 80 – 95 g) elicited a difference in growth response, Cd accumulation and micronutrient distribution. Leaf length and fresh weight of leaves of the medium-size plants decreased with application of Cd at 2 mg l-1 whilst 5 mg l-1 Cd significantly decreased the number of leaves in small-sized plants. Small plants accumulated more Cd in the leaves than medium- or large-sized plants. Application of Cd at 2 mg l-1 and 5 mg l-1 lowered the leaf Cu, Fe, Mo and Zn contents in small- and medium-size plants. This study indicated that T. violacea has the ability to accumulate Cd. In addition, plant size plays an important role with regards to Cd accumulation and elemental distribution. The effect of various nutrient applications (10%, 50% and 100% Hoagland’s nutrient solutions (HS); and HS deficient in N, P or K) on growth parameters and micronutrient distribution in Dioscorea dregeana were investigated. Irrigating plants with 50% HS resulted in better growth performance, whereas a deficiency of either N, P or K negatively affected seedling growth. Plants grown in 10% HS contained higher total B, Fe and Mo levels compared to seedlings grown in 50% and 100% HS. Compared to the control, P deficiency resulted in a Fe increase in the leaves, tuber and roots while a lack of P and K significantly increased total Mn content in D. dregeana. The effect of excess Zn (100, 200 and 300 mg l-1) on growth performance, chlorophyll content and microelemental distribution on Dioscorea sylvatica was investigated. Growth parameters showed a significant decrease when supplied with Zn at 100 mg l-1. Zinc phytotoxicity was evident by the reduction in chlorophyll content. Highest Zn concentrations were detected in the roots. Certain micronutrients appear to be redistributed due to Zn toxicity. The effect of microelements (Cu, Zn) and heavy metals (Cd, Pb, Hg) on germination and seedling development of Bowiea volubilis, Eucomis autumnalis and Merwilla plumbea was investigated. Copper and Zn applied at 1 mg l.1 significantly reduced the percentage germination of E. autumnalis. Low concentrations (. 1 mg l.1) of Cu and Zn negatively affected the root growth of all three species. Mercury concentrations of 0.5 and 1 mg l.1 significantly decreased the percentage germination of B. volubilis and E. autumnalis respectively. Cadmium and Hg at 2 mg l.1 showed a negative effect on the root growth of B. volubilis. Concentrations of 0.5 mg l.1 of all heavy metals tested significantly decreased shoot length of M. plumbea. The effect of Cd on biological activity (anti-inflammatory, antibacterial and antifungal) of medicinal plants with previously confirmed activity was evaluated. When supplied with Cd at 2 mg l-1, Eucomis humilis bulbous extracts showed lower anti-inflammatory activity than the control for both COX-1 and COX-2 activity. Eucomis autumnalis bulbous extracts had greater COX-1 activity compared to the control. However, Cd suppressed the activity of COX-2. Compared with non-Cd-treated Merwilla plumbea plants (control), those supplied with Cd at 10 mg l-1 showed increased antibacterial activity against Bacillus subtilis, Klebsiella pneumoniae and Staphylococcus aureus. However, no change in activity against Escherichia coli was observed. Cadmium accumulation in the bulbs had no effect on antifungal activity of Tulbaghia violacea. Thus, optimized agricultural practices are essential for quality control of cultivated medicinal plants. The studies presented in this thesis collectively answer several questions related to heavy metal involvement in South African medicinal plants. The findings substantiate the need to regulate and monitor the South African medicinal plant trade against heavy metal contamination which will in turn provide a product of safety and quality to the consumer. / Thesis (Ph.D.)-University of KwaZulu-Natal, Pietermaritzburg, 2008.
212

Baseline survey on the use and management of hazardous chemical substances at a chemistry department in a selected higher education institution in Gauteng province

Venter, Elana 02 1900 (has links)
Background: The aim of this study was to investigate the use and management of hazardous chemical substances (HCS) at a chemistry department in a selected Higher Education Institution in Gauteng province. Method: A quantitative, baseline descriptive study was conducted using a structured survey checklist. The population consisted of the chemistry department. Other than purposive observation by the researcher, employees present during data collection were approached for further clarifying comment to survey questions. Results: It emerged that physical-, health- and environmental hazard classes of HCS were present; and that hazard types included flammable liquids, HCS with acute toxicity and carcinogenicity. Selected exposure control measures were lacking which created risks of fire and explosion. Conclusion: The study reflected the use and management of HCS, the actual and potential human exposure and the exposure control measures. Varying degrees of compliance were found, which, if attended to, should mitigate risks to health and safety. / Health Studies / M.A. (Nursing Science)
213

Food safety management and associated food handler behaviours in a prominent South African entertainment facility

Jackson, Linda January 2011 (has links)
Thesis (M. Tech. Environmental health) -- Central University of technology, Free State, 2011 / Millions of people in South Africa eat out every day, utilising the food service sector. Although the lack of an effective reporting system makes it difficult to know how many of these people suffer from food-borne illness, statistics from the developed countries show that this number may be significant. There is, therefore, the need to ensure that the food service sector, which encompasses fast food outlets, hotels and similar accommodation outlets offering food and beverage services, restaurants, caterers, etc., implement effective food safety management systems. Internationally, the trend has been that food safety management systems should be based on the internationally accepted Hazard Analysis Critical Control Point (HACCP) principles. In South Africa, the implementation of HACCP as a food safety management system has been driven by international trade requirements where foods are exported to countries such as the European Union or the United States of America. A national regulation requiring HACCP implementation was promulgated in 2003, but compliance is not yet required for the food service sector. Currently, neither of the above mentioned factors put adequate pressure on the food service sector to implement formal food safety management systems. However, increasing international tourism and the hosting of international sporting events has brought this sector under scrutiny. Food handlers have been implicated in many outbreaks of food-borne illness and much research has been done to investigate causal factors in this regard. Food handler training has been proposed as a strategy to improve food safety practices. However, research has shown that the traditional provision of food safety and food hygiene knowledge does not equate to improved food safety behaviours. Some authors postulate that the organisational context, created largely by the management of an organisation, is of greater significance than training. Less research is available on these management factors – defined as the situational factors when discussing organisational culture, or defined as enabling and reinforcing factors when discussing food handler behaviour. This study commenced with the hypothesis that food handlers are not able to implement the correct food safety behaviours in the absence of sufficient management support. This support would require appropriate policies regarding food safety, the provision of training and infrastructure and enforcing the correct behaviours by line management, as a minimum. The aim of this study was to investigate and assess the role of line management in relation to food safety at a prominent South African entertainment facility. In order to achieve this, the following objectives were defined for the study: to conduct a qualitative assessment of the role of management in food safety, to assess the role of management in the provision of food safety training and to assess the role of management in the provision of a basic hygiene infrastructure at the study site in order to allow food handlers to carry out the correct behaviours. The objective of conducting a qualitative study of management practices, policies and resource provision with respect to food safety revealed that there was no formal evidence of management commitment to food safety other than the recent provision of food handler training. The findings also indicated a lack of a formal management system for food safety at the study site. In the exploratory survey of food safety training and knowledge, results showed that only 60 % of staff in the survey had received training. This indicates that at the time of the survey, the study site did not fully comply with the minimum legal requirements for food handler training. The results of the employee survey further indicated that employees were aware of the importance of hand washing although it was not possible to determine whether this knowledge was as a result of the training intervention or prior knowledge. Many of the supervisors were not yet trained in food safety and the impact of the food safety training intervention on related behaviours at the site will require further in-depth assessment. Upon investigating the food hygiene infrastructure provided at the study site to allow food handlers to carry out the correct behaviours, findings indicated that although the personnel hygiene programme addressed most of best practice requirements in design, the implementation of the hand washing requirements was not aligned with accepted norms due to the lack of sufficient hand wash basins. The provision of facilities such as sufficient and conveniently located hand wash basins is a management function and findings suggest that, as a priority, management should ensure that they are not contributing to the lack of implementation of the correct food safety behaviours of food handlers as a result of failing to provide the necessary resources. The results of this study should be of value in the food service sector, specifically hotel kitchens, as a guideline to ensure that management plays an effective role in facilitating food safety management systems. A robust food safety and food hygiene training programme for all levels of the organisation is essential in ensuring adequate knowledge of food safety hazards and correct practices. Training should be supported by daily supervision of food safety controls, management commitment and a work environment that supports the implementation of the correct behaviours. Literature has shown that undesirable practices are often deeply rooted in kitchen culture. It has further been commented that culture changes require a top-down approach which usually involves working with the leadership of the organisation. Important policies and procedures generally originate from the management tiers and will always require the concurrence of management in providing resources, altering priorities or otherwise changing how things are done in the organisation. The results of this study are invaluable in highlighting areas in an organisation that could be targeted to change the kitchen culture. Such changes are primarily the responsibility of management. Ultimately, this study endeavours to contribute to the body of knowledge pointing to the role of social-behavioural aspects in ensuring food safety and thereby consumer well-being.
214

An evaluation of the culture of patient safety as a critical element of healthcare in a public hospital in Durban, KwaZulu-Natal

Govender, Vathanayagie January 2016 (has links)
Submitted in fulfillment of the requirements of the degree of Master of Health Sciences in Nursing, Durban University of Technology, Durban, South Africa, 2016. / Aim The study evaluated the culture of patient safety and the factors that contribute and influence patient safety as a critical element, to healthcare in a public hospital in Kwa-Zulu Natal, through a predesigned questionnaire with the objectives of establishing the current status of the culture of patient safety in the said hospital, evaluating responses from nurses and doctors and other healthcare professionals, exploring the effectiveness of communication and teamwork within units and hospital. Methods The study evaluated the culture of patient safety and the factors that contribute and influence patient safety as a critical element, to healthcare in a public hospital in Kwa-Zulu Natal, through a predesigned questionnaire with the objectives of establishing the current status of the culture of patient safety in the said hospital, evaluating responses from nurses and doctors and other healthcare professionals, exploring the effectiveness of communication and teamwork within units and hospital. Results The resultant data from the predesigned questionnaire was divided into components of teamwork within and between units, hospital and supervisor management support for patient safety, communication openness and feedback regarding errors, non-punitive response to errors, hospital handover of information staffing and overall patient safety grade. The study was compared to the studies in the US and three other countries across the European continent, Netherland, Taiwan, and US [Wagner et al. 2013]. The findings as possible strengths of the study were teamwork within units, learning in the organization, feedback and communication, and manager and supervisor support for patient safety. The areas that needed attention were teamwork across units, communication openness, staffing, non-punitive response to errors and overall patient safety grade, handover of information between units. Conclusions The findings, reflective of a developing country, compared to the findings from similar studies in developed countries such as the USA and countries in transition such as Netherlands and Taiwan. In reference to the precincts that face a developing country such as South Africa, certain highlights emerged from the comparison, as areas of strength, areas requiring attention, and a preliminary insight into current practices within the South African context which can be viewed as an opportunity to sustain current good practices and inform future research. / M
215

Voedselrisikobestuur tydens die opberging en hantering van graan in Overberg Agri.

Lusse, Johan 12 1900 (has links)
Thesis (MBA)--Stellenbosch University, 2006. / ENGLISH ABSTRACT: Grains are generally considered to be low risk products. However food safety laws and consumer demands require companies to implement programs that will ensure food safety. To comply with these demands, South African grain handling companies are required to implement appropriate risk management systems. Companies that do not adopt such systems will not only exclude themselves from international grain markets but also from the whole food industry with related losses in market share. This study involved consultation with various roieplayers in the grain industry and a literature study to determine the current status of food risk management systems in South Africa. The survey investigated the food risk management requirements of local grain handling companies, and how local and international companies manage food risks. Existing food risk management practices currently implemented by Overberg Agri were also analysed. Although Overberg Agri's grain division has been handling grain for many years, attention to quality, safety en food risk factors has been infonnal and fragmented. No formal documented food risk management system has been implemented. This study presents an integrated food risk management system for managing food quality and food safety. The management system aims at identifying all important processes which are to be managed, to formally document the processes and to provide guidelines for implementing the system. Adoption of such an approach would ensure that the system is implemented in a structured way and that processes are regularly reviewed and updated as required in an ever-changing business environment. The management system contains the implementation of a system that includes food quality~ safety and risk, but includes more than just the minimum requirements of the ISO 9001 and Codex standards. The proposed management system focusses on an approach based on logical sequence of the daily business, to involve everyone and keep them involved. This will ensure that processes are executed in a manner that will identify all food risks to limit or exclude them, rather than analysing each element of an existing standard and repeating it as a requirement. The existing management system of Overberg Agri is not effective in managing food risks because several losses still occure. This is because there are insufficient formal systems, documentation and records available to determine wheter losses can be ascribed to structures, work instructions, management or latent grain defects. The proposed system will ensure that the above mentioned will be implemented to supply the company, stakeholders en clients with sound information which is needed for continuous improvement of the company. / AFRIKAANSE OPSOMMING: Oor die algemeen word graan as veilige voedsel beskou. Verbruikers dring al meer daarop aan dat ondememings moet bewys dat hulle stelsels in plek het vir die versekering van veilige voedsel. Om aan die vereistes te voldoen, moet ondememings in Suid-Afrika wat graan hanteer, die gepaste risikobestuurstelsels implementeer. Ondernemings wat dit nie doen, stel hulself bloot aan verliese sowel as uitsluiting, nie net van die intemasionale graanhandel nie, maar ook die hele voedselindustrie. Vir die studie is rolspelers in die graanindustrie genader en literatuur bestudeer om vas te stel wat in Suid-Afrika ten opsigte van voedselrisikobestuur bestaan. Daar is ook vasgestel wat die behoeftes ten opsigte van risikobestuur is vir ondememings wat graan opberg en hanteer en wat plaaslike en internasionale ondememings doen om voedselrisiko's te bestuur. Ook is bepaal wat alreeds in Overberg Agri se graanafdeling rakende voedselrisikobestuur bestaan. Alhoewel die afdeling al jare funksioneer is daar heelwat plekke waar op informele wyse aandag aan kwaliteit, veiligheid en voedselrisiko gegee word, maar nie formeel nie. Die werkstuk poog daarin om 'n geintegreerde bestuurstelsel vir voedselkwaliteit en - veiligheid daar te stel. Die bestuurstelsel het dit ten doel om alle belangrike prosesse wat bestuur word, te identifiseer en op 'n formele wyse te dokumenteer en te implementeer. Sodoende word seker gemaak dat dit reelmatig gebeur en dat sulke prosesse gereeld hersien word om te sien of hulle noodsaaklik vir die bedryf is. Die bestuurstelsel behels die implementering van 'n stelsel wat voedselkwaliteit, -veiligheid en -risiko insluit, maar meer is as net die absolute minimum vereistes van die ISO 9001 en die Codex standaard. Hiervoor kombineer die voorgestelde bestuurstelsel die ISO 9001 en HACCP standaarde. Die bestuurstelsel konsentreer meer op 'n benadering gebaseer op 'n logiese volgorde soos die besigheid daagliks vloei, en om almal betrokke te kry en te hou, en dan te verseker dat prosesse so uitgevoer word dat alle voedselrisiko's geidentifiseer en beperk of uitgesluit word, eerder as om elke element van 'n bestaande standaard te ontIeed en weer te gee as 'n vereiste. Die bestaande bestuurstelsel van Overberg Agri is nie effektief in die bestuur van voedselrisiko's nie, aangesien te veel verliese steeds voorkom. Dit is waarskynlik omdat daar nie genoeg stelsels, dokumentasie en rekords beskikbaar is, sodat oorsake toegeskryf kan word aan strukture, werksinstruksies, bestuur of graan nie. Die voorgestelde stelsel wil verseker dat bogenoemde geimplementeer word om vir die ondememing self, aandeelhouers en kliente konkrete inligting te gee sodat verbetering voortdurend aangebring kan word.
216

Legitimacy and international public authority : the evolution of IAEA safeguards

Roydan, Alexa January 2010 (has links)
Using the IAEA as a case for focused study, this thesis argues that the construction and reconstruction of the Secretariat’s legitimacy has been dependant upon several different legitimating influences at different stages in the IAEA’s evolution. In brief, it will be demonstrated that early on, in the absence of clear non-proliferation norms, power wielded by critical and self-interested actors functioned as the primary legitimator – promoting early development and insulating the organization from outside pressures. However, based upon this particular case, I will also argue that state power alone is insufficient to guarantee legitimacy and the exercise of international public authority, especially in light of the degree to which these institutions are increasingly expected to challenge the territorial sovereignty of member states. In order for an organization to acquire adequate legitimacy to exercise public authority over the long term, it must develop beyond the point at which state power is instrumental, and assume a degree of organizational autonomy. This happened with the evolution of organizational expertise recognizing the IAEA’s bureaucracy as an authority, development of specific nonproliferation rules and norms that placed the IAEA in authority, and “right” processes within the bureaucracy that reinforced these and other substantive norms, positioning the Secretariat as a trusted agent within international society. Thus, the development of a professional identity, successful norms and rules, and the elaboration of a “right” process were key to the creation of legitimacy, and as a consequence, the Secretariat’s exercise of public authority in support of the safeguards regime.
217

Organization failure in denial?: a comparative case study of infant milk powder product safety crises in commission situation in mainland China. / CUHK electronic theses & dissertations collection

January 2012 (has links)
2008年三鹿三聚氰胺毒奶粉事件震驚國內外,該事件導致六名嬰兒腎結石死亡,逾三萬嬰幼兒從此生活在各種腎疾病的陰霾之下。此後奶產品安全問題尋出不窮,對國內奶產業造成嚴重的負面影響,令消費者對整個國內奶產業信心下降。事實上,在很多奶產品安全的危機中,遭受質疑的企業組織最後均被政府的檢測結果證實是無辜的。在危機中,組織的形象受到威脅,組織需通過不同的方法進行自我辯護。現存的文獻提出,危機溝通策略和組織對責任承擔的態度是兩個影響公眾對組織信心和媒體報導語調的重要因素。組織類型(國有或外資)也會影響公眾對組織的信心和媒體報導語調。過往研究也發現,公眾對組織的信心與媒體報導語調之間存在正相關的聯繫。此研究通過對兩個犯行危機情景的案例研究(2009多美滋危機事件和2010聖元危機事件),目的在於評估危機溝通策略的效用,同時也探討在不同的階段中危機溝通策略、組織責任承擔、組織類型、公眾對組織的信心和媒體報導語調之間的關係。研究成果發現文獻建議之在不同階段的最佳策略和組織責任承擔對公眾對組織的信心和媒體報導語調均無重要影響。然而,使用越少藉口和越多提供信息策略的組織贏得更多公眾信心,從而提升正面媒體報導。研究也發現,外企在第一和第二階段報導更正面,但最後國企反而取得正面的媒體報導。另外,組織類型與階段對組織選取策略與組織責任承擔均有影響。本研究結果顯示西方危機處理理論在低信任度社會如中國等未必適用。研究一方面透過更複雜的情境角度,進一步加深對現有危機傳播文獻的理解,例如引入不同階段的概念來評估危機管理的成效,另一方面也為在低信任社會中的奶產業企業提供有效的危機管理建議。 / Sanlu Melamine-contaminated Milk Scandal, the frequent outbreak of dairy product safety crises had a severe impact on the domestic dairy industry, resulting in a general loss of the consumers' confidence in the entire domestic dairy industry. In fact, in many crises the crisis-ridden organizations were eventually proven innocent by governmental departments. During a crisis, an organization's image is threatened, so that various communicative entities are used to defend this image. Based on the existing literature, this study aims at evaluating the effectiveness of crisis communicative strategies (CCSs) as well as investigating the relationships among CCSs, organization responsibility acceptance, organization ownership type (domestically owned or foreign-invested), confidence in organization and media coverage in different stages during the crisis by comparing the Dumex case in 2009 and the Synutra case in 2010. The results found that the posited optimal CCS in a particular stage and organization responsibility acceptance generally did not have significant effects on confidence in organization or media image coverage. However, the findings revealed that the less excuses and the more information providing strategies were employed, the higher the stakeholders' confidence in organization would be, which in turn significantly increased the positive image coverage. Certain CCSs, i.e., diversion, no response, also showed significant direct effects on media coverage. Moreover, foreign-invested organization appeared to enjoy favorable image coverage in Stage 1 and Stage 2, but domestically owned organization surpassed it in the last stage. Organization ownership type and stages also had significant impacts on the choices of CCSs and degree of organization responsibility acceptance. Stage was also a significant negative predictor of confidence in organization but not for media coverage. This study on one hand revealed that the western crisis management theory might not be accommodative to the low-trust context in mainland China and thus theoretically further the understanding of existing crisis communication literature in a more complex contextual perspective through integrating stages as a significant time factor into the evaluation of crisis management. On the other hand it also pragmatically provides useful suggestions on effective crisis strategic management to dairy corporate in low-trust societies. / Detailed summary in vernacular field only. / Huang, Peiyi. / Thesis (M.Phil.)--Chinese University of Hong Kong, 2012. / Includes bibliographical references (leaves 159-177). / Electronic reproduction. Hong Kong : Chinese University of Hong Kong, [2012] System requirements: Adobe Acrobat Reader. Available via World Wide Web. / Abstracts also in Chinese; appendixes in Chinese. / ABSTRACT (English version) --- p.i / ABSTRACT (Chinese version) --- p.iii / ACKNOWLEDGEMENT --- p.v / TABLE OF CONTENTS --- p.ix / Chapter 1. --- INTRODUCTION --- p.1 / Chapter 2. --- CONCEPTUALIZATION --- p.9 / Chapter 2.1 --- Crisis Management --- p.9 / Crisis --- p.9 / Crisis Management --- p.11 / Chapter 2.2 --- Outcome: Media Image Coverage --- p.14 / Chapter 2.3 --- Time Factor: Stages --- p.16 / Chapter 2.4 --- Strategic Factors --- p.20 / Crisis Communicative Strategies (CCSs) --- p.20 / Organization Responsibility Acceptance --- p.46 / Chapter 2.5 --- Organizational Factor: Organization Ownership Type --- p.50 / Chapter 2.6 --- Mediator: Confidence in Organization --- p.52 / Chapter 2.7 --- Research Framework, Hypotheses and Research Questions --- p.55 / Chapter 3. --- METHODOLOGY --- p.58 / Chapter 3.1 --- Case Selection --- p.58 / Case --- p.58 / Design --- p.61 / Chapter 3.2 --- Content Analysis --- p.65 / Data Collection --- p.65 / Data Coding --- p.67 / Inter-coder Reliability --- p.70 / Chapter 4. --- RESULTS --- p.71 / Chapter 4.1 --- Basic Sample Information --- p.71 / Chapter 4.2 --- Hypothesis Tests of Two Individual Cases --- p.71 / Case 1 (Dumex) --- p.73 / Chapter tCase 2 (Synutra) --- p.86 / Chapter 4.3 --- The Overall Results of Cases and Research Questions --- p.91 / Media Valance --- p.92 / Research Question 1 --- p.95 / Research Question 2 --- p.99 / Research Question 3 --- p.107 / Chapter 4.4 --- Summary of the Findings --- p.116 / Chapter 5. --- DISCUSSIONS AND IMPLICATIONS --- p.126 / Chapter 5.1 --- Stage as A Complex Concept --- p.126 / Controlling Other Dangers in a Dynamics Crisis --- p.127 / The Role of Governmental Intervention in a Low-trust Society --- p.129 / Chapter 5.2 --- Effects of CCSs on Media Image Coverage inLow-trust Society --- p.132 / Chapter 5.3 --- Mediating Effects of Confidence in Organization --- p.139 / Chapter 5.4 --- Suggestions of Applications of CCSs in Low-trust Society --- p.141 / Chapter 5.5 --- Limit Predictive Power of Organization Responsibility Acceptance --- p.148 / Chapter 5.6 --- Effects of Organization Ownership Type --- p.150 / Chapter 6. --- LIMITATIONS AND FUTURE RESEARCH DIRECTIONS --- p.154 / Chapter 7. --- REFERENCES --- p.159 / Chapter 8. --- APPENDIXES --- p.178
218

On the Estimation of Volumes of Roadways: An Investigation of Stop-Controlled Minor Legs

Barnett, Joel Stephen 19 February 2015 (has links)
This effort seeks to answer the question; can a transferable model be developed from easily obtainable, publicly available land-use, census, roadway, and network data for the use in safety performance functions? 474 stop-controlled minor legs were used as the training data set using ordinary least squares regression. A best-fit model of maximum independent variables, n=12 was chosen using an exhaustive approach using Mallow's Cp to select the model with least bias in the predictors. The results of the analysis revealed that the combination of variables from Washington, Ohio, and North Carolina did not have a strong relationship. The best-fit model incorporated functional class information of the major-leg, minor leg functional class information, longitudinal markings, access to a parking lot, and population density of census tract. Validation of the model demonstrated an average 59 percent error between the model estimated and actual AADT values for validation data set (n=54). Furthermore, separate models for each state revealed a lack of uniformity in the dependent variables, and more variance description of the state specific AADT.
219

High pressure condensation heat transfer in the evacuated containment of a small modular reactor

Casey, Jason R. 19 December 2012 (has links)
At Oregon State University the Multi-Application Small Light Water Reactor (MASLWR) integral effects testing facility is being prepared for safety analysis matrix testing in support of the NuScale Power Inc. (NSP) design certification progress. The facility will be used to simulate design basis accident performance of the reactor's safety systems. The design includes an initially evacuated, high pressure capable containment system simulated by a 5 meter tall pressure vessel. The convection-condensation process that occurs during use of the Emergency Core Cooling System has been characterized during two experimental continuous blowdown events. Experimental data has been used to calculate an average heat transfer coefficient for the containment system. The capability of the containment system has been analytically proven to be a conservative estimate of the full scale reactor system. / Graduation date: 2013
220

A study of the occupational safety and health in the construction industry in Hong Kong

Chu, Chun-wah, 朱振華 January 1999 (has links)
published_or_final_version / Politics and Public Administration / Master / Master of Public Administration

Page generated in 0.0251 seconds