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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.
121

Development of computerised management information system for bus maintenance in Kowloon Motor Bus Co., (1933) Ltd.

January 1992 (has links)
by Sit Wing-Hang, Leung Chiu-Ping. / Thesis (M.B.A.)--Chinese University of Hong Kong, 1992. / Includes bibliographical references (leaf 80). / ACKNOWLEDGMENT --- p.1 / EXECUTIVE SUMMARY --- p.2 / Chapter 1. --- INTRODUCTION --- p.5 / Chapter 1.1 --- Company Background --- p.5 / Chapter 1.2 --- Project Objective --- p.8 / Chapter 1.3 --- Scope Of Work --- p.9 / Chapter 2. --- RESEARCH METHODOLOGY --- p.12 / Chapter 2.1 --- Interview --- p.12 / Chapter 2.2 --- Refer To Organisation In Similar Nature --- p.12 / Chapter 2.3 --- Field Observation --- p.13 / Chapter 3. --- PRESENT SITUATION AND PROBLEM AREAS -FINDINGS AND ANALYSIS --- p.14 / Chapter 3.1 --- Costing Accounting System --- p.14 / Chapter 3.2 --- Management Planning System --- p.18 / Chapter 3.3 --- Manpower Control System --- p.21 / Chapter 3.4 --- Stock Control System --- p.26 / Chapter 3.5 --- Vehicle And Major Component History Recording System --- p.29 / Chapter 4. --- SYSTEM DEVELOPMENT STRATEGY --- p.32 / Chapter 5. --- SYSTEM DESIGN --- p.37 / Chapter 5.1 --- Accounting System --- p.38 / Chapter 5.2 --- Management Planning System --- p.42 / Chapter 5.3 --- Manpower Planning System --- p.47 / Chapter 5.4 --- Stock Control System --- p.55 / Chapter 5.5 --- Vehicle And Major Component System --- p.57 / Chapter 6. --- HARDWARE DESIGN --- p.60 / Chapter 6.1 --- Hardware Configuration --- p.60 / Chapter 6.2 --- Interface With Existing Computer Facilities --- p.62 / Chapter 7. --- IMPLEMENTATION PLAN --- p.64 / Chapter 8. --- COST-EFFECTIVENESS ANALYSIS --- p.69 / Chapter 8.1 --- Cost Analysis --- p.69 / Chapter 8.2 --- Benefit Analysis --- p.70 / Chapter 9. --- CONCLUSION --- p.78 / BIBLIOGRAPHY --- p.80 / APPENDICES
122

Business strategies in the Hong Kong merchant banking industry: a case study.

January 1988 (has links)
by Hui Leung Wah, Herbert, So Kam Chee. / Thesis (M.B.A.)--Chinese University of Hong Kong, 1988. / Includes bibliographical references (leaves 84-85).
123

A case study on the merger of Pacific Century Cyberworks Ltd and Cable & Wireless HKT Ltd.

January 2001 (has links)
by Lee Ka Wing, Liu Chi Ngai. / Thesis (M.B.A.)--Chinese University of Hong Kong, 2001. / Includes bibliographical references (leaves 46-47). / ABSTRACT --- p.i / TABLE OF CONTENTS --- p.ii / Chapter / Chapter I. --- INTRODUCTION --- p.1 / Chapter II. --- COMPANY BACKGROUND --- p.3 / Pacific Century CyberWorks Limited --- p.3 / History --- p.3 / Major Business --- p.5 / Performance --- p.7 / Management of PCCW --- p.8 / Shareholdings Distribution (Prior to the merger) --- p.9 / Cable & Wireless HKT --- p.9 / History --- p.10 / Major business --- p.11 / Performance --- p.11 / Shareholdings Distribution (Prior to the merger) --- p.13 / Chapter III. --- REASONS FOR THE ACQUISITION --- p.14 / Chapter IV. --- MAJOR EVENTS --- p.17 / Competitive bid by SingTel --- p.17 / Arrangement for the USS12 billion loan --- p.18 / The Composite Document --- p.19 / Stories Behind the Offers (Prior to the Mergcr) --- p.20 / Probable strategy of C&W behind the acceptance --- p.21 / Chapter V. --- FINANCING PACKAGE --- p.24 / PCCW Equity Funding --- p.24 / PCCW Loan Funding --- p.25 / Chapter VI. --- ANALYSIS ON THE EFFECTS OF CORPORATE ANNOUNCEMENTS --- p.27 / Market Efficiency --- p.27 / Methodology --- p.28 / Announcements --- p.29 / Chapter VII. --- AFTERMATH --- p.31 / Financial Ferformance --- p.31 / What Went Wrong? --- p.32 / Economic and Corporate Governance --- p.34 / APPENDIX --- p.39 / BIBLIOGRAPHY --- p.46
124

Do mergers necessarily create value for shareholders?: a case study of the mega-merger of Pacific Century Cyberworks and Cable & Wireless HKT.

January 2001 (has links)
by Mao Yim Cheung, Ng Kai Chung. / Thesis (M.B.A.)--Chinese University of Hong Kong, 2001. / Includes bibliographical references (leaves 58-59). / ABSTRACT --- p.i / CHAPTER / Chapter I. --- INTRODUCTION --- p.1 / Chapter II. --- LITERATURE REVIEW --- p.6 / Chapter (I) --- Review Of The Justifications For A Merged Entity Failing To Create Value --- p.6 / Chapter (II) --- Analytical Framework --- p.13 / Chapter III. --- COMPANY BACKGROUND --- p.27 / Chapter (I) --- Pacific Century Cyber Works --- p.27 / Chapter (II) --- Cable & Wireless HKT --- p.33 / Chapter IV. --- MERGER DIAGNOSIS --- p.37 / Chapter (I) --- Value Dynamics Framework Analysis --- p.37 / Chapter V. --- RECOMMENDATIONS --- p.52 / Chapter (I) --- Reposition NOW --- p.52 / Chapter (II) --- Focus More On HKT's Corporate Clients --- p.52 / Chapter (III) --- Restructure The CyberWorks Venture (CWV) --- p.53 / Chapter (IV) --- Transform Core Businesses Into Joint Ventures --- p.54 / APPENDIX --- p.55 / BIBLIOGRAPHY --- p.58
125

Business process reengineering in Hong Kong Telecom.

January 1997 (has links)
by Chan Kam-Lung. / Thesis (M.B.A.)--Chinese University of Hong Kong, 1997. / Includes bibliographical references (leaves 56-57). / ABSTRACT --- p.ii / TABLE OF CONTENTS --- p.iii / LIST OF TABLES --- p.v / ACKNOWLEDGEMENT --- p.vi / Chapter / Chapter I. --- INTRODUCTION --- p.1 / Difference Between BPR and Other Improvement Methods --- p.1 / Current Issues in BPR Implementation --- p.2 / Critical Success Factors for BPR Initiatives --- p.5 / Objective of the Study --- p.6 / Chapter II. --- DETAILED REVIEW OF THE COMPANY UNDER STUDY --- p.8 / Financial Condition of the Company --- p.9 / Competitive Market Condition 、 --- p.10 / Future Change in the Telecom Service Market --- p.11 / Recent and Future Changes in Hong Kong Telecom --- p.13 / Chapter III. --- METHODOLOGY OF STUDY --- p.18 / Scope of the Study --- p.18 / Questionnaire Design --- p.19 / Analysis of Results --- p.20 / Chapter IV. --- RESULTS AND ANALYSIS --- p.22 / Results --- p.22 / Analysis and Discussion --- p.23 / General Awareness of BPR and Underlying Motives --- p.23 / Adequacy and Forms of Communication for BPR --- p.26 / "Employees' Feeling, Opinion and Behaviour on BPR Initiatives" --- p.29 / Future of Company and Employees' Future Plan --- p.31 / Analysis With Regard to Age Distribution --- p.32 / Analysis With Regard to Year of Service --- p.33 / Analysis With Regard to Responsible Area --- p.34 / Analysis With Regard to Position in Company --- p.34 / Chapter V. --- SUMMARY AND RECOMMENDATIONS --- p.36 / Limitation and Suggestion for Further Study --- p.37 / APPENDIX / Chapter I. --- Results on Understanding and Awareness of BPR --- p.42 / Chapter II. --- Results on Adequacy and Different Forms of Communication for BPR --- p.43 / Chapter III. --- Results on Employees' Feeling and Behaviour Towards BPR --- p.44 / Chapter IV. --- Results on Future of Company and Employees' Future Plan --- p.45 / Chapter V. --- Results on Analysis Based on Age Distribution --- p.46 / Chapter VI. --- Results on Analysis Based on Year of Service Distribution --- p.47 / Chapter VII. --- Results on Analysis Based on Responsible Area --- p.48 / Chapter VIII. --- Results on Analysis Based in Portion in Company --- p.49 / Chapter IX. --- Survey Questionnaire --- p.50 / BIBLIOGRAPHY --- p.55
126

The introduction of marketing concept to the China and South Sea Bank Ltd.

January 1998 (has links)
by Chan Kam Hung, Chan Wai Loi. / Thesis (M.B.A.)--Chinese University of Hong Kong, 1998. / Includes bibliographical references (leaf 146). / ABSTRACT --- p.iii / TABLE OF CONTENTS --- p.v / LIST OF TABLES --- p.viii / LIST OF CHARTS --- p.ix / Chapter / Chapter I --- INTRODUCTION --- p.1 / Chapter II --- METHODOLOGY --- p.3 / Chapter III --- COMPETITIVE PROFILE REPORT --- p.5 / HANG SENG BANK --- p.5 / Products and services offered by HSB --- p.7 / STANDARD CHARTERED BANK --- p.12 / Products and services offered by SCB --- p.13 / CHEKIANG FIRST BANK --- p.18 / CONCLUSION --- p.20 / Chapter IV --- MARKET PROFILE REPORT --- p.21 / BANKING INDUSTRY IN HONG KONG --- p.21 / MARKET STRUCTURE --- p.22 / PRODUCT CLASSES IN BANKING INDUSTRY --- p.22 / TECHNOLOGY TREND --- p.23 / ECONOMIC GROWTH AND TREND --- p.25 / MARKET SIZE --- p.29 / FACTORS AFFECTING DEMAND --- p.31 / POLITICAL FACTORS --- p.31 / CONCLUSION --- p.32 / Chapter V --- CUSTOMER PROFILE REPORT --- p.34 / RESULTS OF THE SURVEY --- p.35 / CONCLUSION --- p.41 / Chapter VI --- PRODUCT PROFILE REPORT --- p.42 / CONCLUSION --- p.47 / Chapter VII --- COMPANY PROFILE REPORT --- p.48 / STRENGTHS --- p.49 / WEAKNESSES --- p.50 / CONCLUSION --- p.51 / Chapter VIII --- MARKET SEGMENTATION AND TARGET SEGMENTS --- p.53 / MARKET SEGMENTATION --- p.53 / TARGET SEGMENTS --- p.55 / Chapter IX --- MARKET OBJECTIVES --- p.64 / EXPAND THE CUSTOMER BASE AND INCREASE REVENUE --- p.64 / ESTABLISH A GOOD COMPANY IMAGE --- p.65 / "PRODUCT OBJECTIVES & STRATEGY," --- p.66 / Product objectives --- p.66 / Product strategy --- p.68 / SERVICES OBJECTIVES & STRATEGY --- p.72 / Services objectives --- p.72 / Services strategy --- p.74 / PRICE OBJECTIVES & STRATEGY --- p.77 / Price objectives --- p.77 / Price strategy --- p.77 / COMMUNICATIONS OBJECTIVES & STRATEGY --- p.78 / Communications objectives --- p.78 / Communications strategy --- p.80 / SALES FORCE OBJECTIVES & STRATEGY --- p.83 / Sales force objectives --- p.83 / Sales force strategy --- p.84 / DISTRIBUTION OBJECTIVES & STRATEGY --- p.84 / Distribution objectives --- p.84 / Distribution strategy --- p.85 / Chapter X --- TACTICAL ACTION PLAN --- p.87 / Chapter XI --- CONTROL/MONITORING MEASURING EFFECTS --- p.89 / Chapter XII --- BUDGET --- p.103 / Chapter XIII --- CONCLUSION --- p.116 / APPENDIX I DR. C. F. STEILEN'S MARKETING MODEL --- p.118 / APPENDIX II QUESTIONNAIRE AND SUMMARY ON THE RESPONSES …… --- p.120 / APPENDIX III ANALYSIS OF RESPONSES BY SEGMENTATION OF PROFESSIONAL AND NON-PROFESSIONAL --- p.132 / APPENDIX IV PRELIMINARY FEEDBACK FROM CSSB --- p.142 / BIBLIOGRAPHY --- p.146
127

本地基督新教現代粤語詩歌的發展(1980-1998): ACM個案研究. / Development of local contemporary Cantonese hymns (1980-1998): case study of ACM / Ben di Jidu xin jiao xian dai Yue yu shi ge de fa zhan (1980-1998): ACM ge an yan jiu.

January 2008 (has links)
高國雄. / "2008年5月". / "2008 nian 5 yue". / Thesis (M.Phil.)--Chinese University of Hong Kong, 2008. / Includes bibliographical references (leaves 49-50). / Abstracts in Chinese and English. / Gao Guoxiong. / Chapter 【第一章】 --- 引言 --- p.1 / 本文所硏究的範圍及其進路 --- p.1 / 粤語的特色,粤語歌曲的限制 --- p.3 / 本文的硏究進路、方法 --- p.5 / 本文的限制 --- p.6 / Chapter 【第二章】 --- 本地基督新教現代粤語詩歌的發展槪況 --- p.7 / Chapter 【第三章】 --- 一個新的開始 --- p.9 / 本地基督新教現代粤語詩歌的起源 --- p.9 / 陳以誠與《怎能忘記》 --- p.9 / 現代粤語詩歌運動的萌芽一由《齊唱新歌》開始 --- p.11 / 《城市之歌》的特色 --- p.12 / 《齊唱新歌》第一、二集的特色及ACM的誕生 --- p.14 / 《齊唱新歌》的成長期(第一集到第六集) --- p.16 / 教會界不同的反應 --- p.17 / 新的取向(《齊唱新歌》第七、八集) --- p.20 / 《齊唱新歌》的高峰與沒落(第九集) --- p.22 / 《齊唱新歌》成功的因素 --- p.23 / Chapter 【第四章】 --- 「『外展唱片』一要進入世界」 --- p.26 / 「赤道」的誕生 --- p.26 / 「赤道」的成長 --- p.28 / 「赤道」的沒落 --- p.34 / Chapter 【第五章】 --- 一次破天荒的合倂 --- p.39 / 合倂白勺背景 --- p.39 / 合倂的對象:「城市旋律協會」 --- p.41 / 合倂的原因、過程 --- p.42 / 合倂還是吞倂? --- p.43 / 合倂的影響 --- p.44 / Chapter 【第六章】 --- 綜合與總結 --- p.45 / 經濟的影響 --- p.45 / 教會的支持 --- p.46 / 個別人才的問題 --- p.47 / 永恆的張力 --- p.47 / 現代粤語詩歌的貢獻 --- p.48 / 參考資料 --- p.49 / 附件一 〈本地基督新教現代粤語詩歌(1980-1998)´ؤ覽表〉Error! Bookmark not defi / 附件二 產品圖片 --- p.93
128

Ube3a Role in Synaptic Plasticity and Neurodevelopmental Disorders.The Lessons from Angelman Syndrome.

Filonova, Irina 13 February 2014 (has links)
Angelman Syndrome (AS) is a severe neurodevelopmental disorder that affects 1:12000 newborns. It is characterized by mental retardation, delayed major motor and cognitive milestones, seizures, absence of speech and excessive laughter. The majority of AS cases arise from deletions or mutations of UBE3A gene located on the chromosome 15q11-13. UBE3A codes for E3-ubiquitin ligase that target specific proteins for degradation. To date, a wide variety of Ube3a substrates has been identified. The accumulation of Ube3a-dependent proteins and their effect on the multitude of signal transduction pathways are` considered the main cause of the AS pathology. While the majority of research has been directed towards target identifications, the overall role of Ube3a in activity-dependent synaptic plasticity has been greatly overlooked. The present work is designed to fill some of these knowledge gaps. Chapter 2 is focused on the activity-dependent aspect of Ube3a expression following neuronal stimulation in vivo and in vitro. We examined total Ube3a expression followed by KCl depolarization in neuronal primary culture. By utilizing a subcellular fractionation technique, we were able to determine which cellular pools are responsive to the depolarization. Next, a fear conditioning paradigm (FC) was used to activate neurons in the paternal Ube3a-YFP reporter mouse brain. This mouse model allowed us to resolve spatial and temporal alterations of the maternal and the paternal Ube3a in hippocampus and cortex followed by FC. In accordance to KCl depolarization results, we observed alterations in Ube3a protein but at later time points. Furthermore, we investigated if the absence of activity-dependent Ube3a changes has any effect on learning and memory kinase activation. We utilized KCl and FC to determine synaptic activity-induced ERK 1/2 phosphorylation in acute hippocampal slices and in CA1 area of hippocampus of wild type (Ube3a m+/p+) and Ube3a deficient mice (Ube3a m-/p+). We demonstrated that Ube3a loss leads to impaired activity-dependent ERK 1/2 phosphorylation. It has been established that Ube3a m-/p+ mice have a profound deficit in LTP, implying the importance of this ligase in excitatory synaptic transmission. The abnormal LTP could be partially explained by an aberrant CaMKII function, decreased activity-dependent ERK 1/2 phosphorylation and reduced phosphatase activity. These proteins have also been implicated in another form of synaptic plasticity such as long-term depression (LTD). Chapter 3, we investigated the contribution of Ube3a to NMDAR - dependent and - independent LTD. Our data showed that Ube3a m-/p+ P21-30 animals exhibit the impairments in both forms of LTD. Next, we focused on elucidating molecular mechanism underlying the reduced mGluR1/5-LTD. We discovered that mGluR1/5 kinase activation such as ERK, mTOR and p38 is not affected by Ube3a loss. In concordance with previous work, we detected increased Arc expression together with abnormal AMPAR distribution in the Ube3a m-/p+ hippocampus. Surprisingly, the mGluR1/5 induced GluR2 trafficking was normal. Our findings infer that elevated Arc levels together with the increased internalization of AMPAR may result in compromised basal state of the synapses leading to a more depression-like state in Ube3a m-/p+ mice. Evidence points that loss of Ube3a produces alterations in a variety of activity-dependent signal transduction cascades that may ultimately result in impaired synaptic plasticity and cognition. Similar to AS, abnormal molecular and behavioral phenotypes have already been observed in other mouse models of human mental retardation such as Fragile X Mental Retardation Syndrome (FXS). Chapter 4 is set to explore if any correlation can be found in between these neurodevelopmental disorders. Analysis of crude synaptoneurosomes of adult Fmr1 KO mice revealed a significant reduction in Ube3a protein. Additionally, a blunted translation of Ube3a in response to mGluR1/5 stimulation was observed. However, we didn't find any evidence of direct interaction between Ube3a mRNA and Fragile X Mental Retardation Protein (FMRP). To examine if some of the pathology seen in Fmr1 KO mice is due to Ube3a downregulation, we performed a rescue experiment by increasing overall levels of Ube3a in hippocampus of FRMP deficient mice. An exhaustive battery of behavioral testing indicated that alterations of Ube3a expression impacted only associative fear conditioning. In summary, the present work has attempted to answer some of the fundamental questions about Ube3a and its role in synaptic plasticity. We have demonstrated that Ube3a expression is modulated by synaptic activation and its activity-dependent alterations are essential for normal brain functioning. Additionally, our data suggest that Ube3a is not only significant for the synaptic excitation but also crucial for the synaptic depression. Finally, our findings indicate that the alteration of Ube3a expression may contribute to the cognitive phenotypes in other neurodevelopmental disorders such as FXS suggesting an advantage of exploring Ube3a function outside the AS research.
129

A gastronomic meditation : on McDonald's

Sheringham, Colin J., University of Western Sydney, College of Arts, Centre for Cultural Research January 2008 (has links)
The thesis offers a gastronomic meditation on the ambiguity and complexity of meanings signified by McDonald’s as one of the most powerful food symbols of the late twentieth-century Western society. Using an advance on the structuralist perspective, the thesis argues that it is important to understand food not simply as a surface representation of the social order but as a product of a constant, constitutive dialectic between order and disorder and a dual perception of order. The search for the complex meanings of McDonald’s is pursued firstly by bringing the concept of disorder to centre stage to form a dialectic relationship between order and disorder; secondly, by setting McDonald’s at the interface of modernity and post modernity, positioned in an intersection of two competing versions of the history of food and of order as expressed through food. Here the dominant historical narrative expresses the triumph of the order of the bourgeoisie through the work of Elias and ‘the civilizing process’, with the counter-narrative of Bakhtin’s theory of the carnivalesque highlighting the continuing importance of disorder. These narratives are explored at two key moments of food history, where the order/disorder dialectic can be seen to play a different role. The first is the interface of medieval ‘disorder’ and the coming bourgeois order of modernity, where Rabelais is the key text and secondly; the early nineteenth-century, where Brillat-Savarin is used as a marker of the triumph of eighteenth-century rationalism. It is only by reference to the order/disorder dialectic and the duality of order that the ambiguity of complex food symbols such as McDonald’s can be better understood, and thus become, importantly, a meditation on the nature of society in the pursuit of an examined existence. / Doctor of Philosophy (PhD)
130

Ethoxylation reactor modelling and design

Chiu, Yen-ni, chiuyenni@yahoo.com.au January 2005 (has links)
The manufacture of nonionic surfactants generally involves ethoxylation via ethylene oxide condensation onto a hydrophobe substrate, mostly in the presence of an alkaline catalyst. Nonionic surfactants are used widely in industrial applications, such as detergents, health and personal care, coatings, and polymers. In Australia, approximately one-third of the annual consumption of nonionic surfactants is imported from offshore manufacturers; the market is highly competitive with the local manufacturer facing increasing competition from imports. Optimisation is a pressing need for the current manufacturing plant of the industrial partner for this research project, Huntsman Corporation Australia Pty Limited, the sole domestic manufacturer of nonionic surfactants in Australia. Therefore, the objectives of this research project were to gain a better understanding of the various chemical and physical processes occurring simultaneously in an ethoxylation process; to identify the process limitation in an existing production plant operated by Huntsman Corporation Australia, and to explore measures for enhancing the asset productivity of the production plant. An ethoxylation process working model, describing the chemical kinetics and the physical transport processes involved, was developed to aid the exploration of optimisation opportunities, which would otherwise be empirical. Accordingly, this research project was structured into a two-stage program. The first stage determined the ethoxylation kinetics experimentally. The second stage investigated the interactions of physical transport processes numerically using a computational fluid dynamics (CFD) technique. The manufacturing scheme discussed in this thesis gave particular emphasis to the ethoxylation process operated in semi-batch stirred reactors. In the first stage, a series of kinetic experiments was performed in a well-stirred laboratory autoclave under base-catalysed conditions. The experimental outcomes were developed into a comprehensive kinetic model which took into account the non-ideal features in the reactor operation. Time-dependent physical changes of the reaction system, such as liquid volume, ethylene oxide solubility and density were also included. The ethoxylation behaviour predicted by the model was shown to be in good agreement with the experimental measurements. This indicated that the kinetic model was sufficiently robust to reproduce the reaction behaviour of a commercially operated ethoxylation operation. In the second stage, numerical simulations of an existing ethoxylation reactor system were presented. In addition, two components were addressed: identification of the process limitation and increasing productivity of the industrial-scale ethoxylation plant. An important assumption was made for the ethylene oxide injection system used in this research project which subsequently simplified the ethoxylation system into a single liquid with miscible chemical species. In the identification of the process limitation, three possible rate-limiting factors were examined: mixing, heat removal and reactor pressure rating. Examination and analysis of the physical data available from plant batch reports found that the reactor pressure rating and the presence of nitrogen padding were the rate-limiting factors to the ethoxylation operations in the industrial reactors. It was recommended that the reactor pressure rating be increased to raise the asset productivity of the reactor. In the numerical simulations of the ethoxylation reactor, time-dependent CFD models were developed for two systems: the ethylene oxide injection pipe and the stirred ethoxylation reactors. The heat transfer of ethylene oxide liquid injection was calculated in a two-dimensional model of the dip-leg pipe used in an industrial-scale ethoxylation reactor. The computation gave the temperature of the injection outflow which was validated against the calculated value by empirical correlation. The effects of various surrounding reaction temperatures, injection rates and pipe sizes on the heat transfer rate were investigated. From these, a range of operating conditions yielding a liquid ethylene oxide outflow was selected. Furthermore, it was found that boiling of ethylene oxide was significantly reduced with increasing pipe diameters. It was recommended that the asset productivity of the reactor be improved by keeping more ethylene oxide injected as a liquid in the reaction mixture to raise the reaction rate and shorten the reaction time. Three-dimensional simulations of a baffled reactor agitated by a single- or a dual-Rushton impeller were presented for both non-reactive and reactive flows. Multiple frames of reference and sliding grid methods were used in sequence to describe the relative motion between the rotating impeller and the stationary baffles. The turbulence parameters were modelled with the standard k- � turbulence model. The simulations of non-reactive flow were compared with the literature velocity data obtained from both the experiments and simulations. Good agreement was achieved. The model was then extended to incorporate ethoxylation flow with integration of the kinetics established in the first stage. Both the laboratory autoclave and the industrial-scale reactors were simulated. The former took into account the ethoxylation exotherm and the latter was carried out isothermally. Both simulations were validated against reaction data obtained from physical experiments, either the kinetic experiments or the plant batch productions. The validated model allowed us to determine the optimum operating condition and explore a new reactor system with enhanced asset productivity. A 50% increase in productivity could be accomplished if the ethoxylation was operated closer to the current design pressure limit. Furthermore, the operating pressure of a new reactor system needed to be doubled if the asset productivity were to be increased to approximately three times the current performance.

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