198 research outputs found
Smart Board Chat System / David Gan Chye Ong
No full textPeople need to connect with other people and business processes to get their work done. Much like the step between the telegraph to the telephone, the step to Internet technology connects people with a richer flow of information. Collaboration can bring people all over the world together with more efficient use of time and at lower cost, by eliminating the need to travel. The
emergence and wide-spread adoption of the World Wide Web (WWW) offers a great deal of potential for the developers of collaborative technologies, both as an enabling infrastructure and a platform for integration with existing end-user environments. This paper describes a system, which attempts to exploit that potential by extending the WWW to provide a set of basic facilities for collaborative information sharing. The SmartBoard
system was conceived as an alternative tools which supports collaborative working for widely-dispersed
working groups. This project focuses on building chat tool and whiteboard for collaborative computing. We report on the design and implementation of our system, the requirements of the system and the benefits accruing from our choice of the development tools and using our experiences suggest how recent developments in the WWW point the way to more suitable and powerful mechanisms to support the development of collaborative systems
David Yeung & Co.
No full textThe Professional Attachment report gives an overview of the work experiences and
assignments I have undertaken during my attachment with David Yeung & Co. It begins
with a brief introduction of the firm. In the main section, it will include the training and working experiences. Lastly, the report concludes with recommendations to improve the current attachment system
sj-pdf-1-pmj-10.1177_02692163221122326 – Supplemental material for Paracentesis for cancer-related ascites in palliative care: An international, prospective cohort study
No full textSupplemental material, sj-pdf-1-pmj-10.1177_02692163221122326 for Paracentesis for cancer-related ascites in palliative care: An international, prospective cohort study by Davinia SE Seah, Andrew Wilcock, Sungwon Chang, Mariana S Sousa, Aynharan Sinnarajah, Cy Oun Teoh, Simon Allan, Richard Chye, Matthew Doogue, Jane Hunt, Meera Agar and David C Currow in Palliative Medicine</p
The political plays of Arthur Miller and Kee Thuan Chye: Resisting the hegemonic state / David Tneh Cheng Eng
No full textThe plays of Arthur Miller and Kee Thuan Chye have garnered interests from theatre enthusiast, the general public, and academicians for their moralistic and didactic plays that often touch on moral and political issues that affect society and the individual. Their plays are most often a reflection of their country’s socio-political and socio-economic development and highlight the concerns of the playwright on issues pertaining to the individual, society, and nation. As such, this thesis has closely analysed the selected political plays of Kee, namely, 1984 Here and Now, The Big Purge, We Could **** You, Mr. Birch and Miller’s The Crucible, Incident at Vichy, and The Archbishop’s Ceiling from the perspective of the plays being ‘resistance’ plays that empower the individual while resisting the hegemonic and political state depicted in the plays. In addition, issues such as corruption and abuse of political power by the state and individuals and the persecution of the innocent are characteristics of Kee and Miller’s plays. In response, Kee and Miller’s plays emphasize the need for the individual to make a moral stand and to resist the hegemony of the state and its agencies. The traditional view of Miller’s and Kee’s political plays is that their plays are always very didactic, moralistic, and direct in their narrative and plot. The findings of this research posits that there is a development in Miller’s and Kee’s selected political plays and both dramatist have experimented with creative dramaturgical strategies and incorporated elements of Butler’s Performativity and Todorov’s the Fantastic in their third wave of political plays. There is therefore a shift in the dramaturgical strategy of Miller’s and Kee’s work that sees their plays becoming ‘creative resistance plays’ that transcend the traditional view of Miller’s and Kee’s political plays as merely traditional political stage plays of their time. Thus this thesis will not only give a different perspective/reading to the political plays of Miller and Kee, but also on the possibility of incorporating newer creative dissenting strategies in the traditional political plays
iv
genre and how political plays could be a form of political communication, an important aspect in nation building and creative means of resistance/dissent
A arte metaficcional de Charlie Chan Hock Chye: diálogos intertextuais em uma narrativa gráfica
No full textTere are diferent resources explored by contemporary narratives addressed to young people. In this sphere is the graphic narrative The Art of Charlie Chan Hock Chye, a work with historical, social, and artistic relevance which constitutes the corpus of this study. Te objective is, from a metafctional perspective of the verbal, imagetic, and graphic, to understand how Liew’s multimodal work encourages the reader to know the backstage of this and other books, promoting the fading of the boundaries between the real and the fctional. Besides that, we will highlight how the author approaches, simultaneously, the history of Singapore and the fctional biography of a reputed cartoonist, paying homage to the art of comics. For this, we start from the theories of metafction (Hutcheon, 1984; Waugh, 1988), intertextuality (Genette, 2006), and the language of comics (Postema, 2021).Diferentes são os recursos explorados pelas narrativas contemporâneas endereçadas aos jovens. Nesta esfera está a narrativa gráfca A arte de Charlie Chan Hock Chye, corpus com relevância histórica, social e artística do presente estudo. Objetiva-se, a partir de uma perspectiva da metafcção nas linguagens verbal, imagética e gráfca, compreender de que forma a obra multimodal de Liew incita o leitor a conhecer os bastidores da criação artística desta e de outras obras, promovendo um esmaecimentoentre o real e o fccional. Além disso, buscamos destacar como o autor aborda, simultaneamente, a história de Singapura e a biografa de um cartunista fccional renomado, rendendo uma homenagem às históriasem quadrinhos. Para isso nos utilizaremos das teorias de metafcção (Hutcheon, 1984; Waugh, 1988), da intertextualidade (Genette, 2006) e da linguagem dos quadrinhos (Postema, 2021
The factors that influence the state of readiness for entrepreneurial opportunities: a case study of late-career professionals, managers, executives and technicians (PMETs) in Singapore
No full textSingapore's population is fast-ageing, with people over 50 years old are projected to rise from 37.2% in 2020 to 46.4% by 2030. Countries that face similar ageing population demographics have seen a triggering of unsustainable
dependency ratio. This impending trend needs urgent reviews of government policies on seniors, including advocating Entrepreneurship as a viable option. Past research has shown that those communities pushing for senior Entrepreneurship
have benefited socially and economically.
Older workers like late-career PMETs are recognised to have possessed the necessary entrepreneurial competencies. These managers are presumed to have the proper personal dispositions and might have acquired a high level of technical and organisational skills, vast tacit knowledge and business experience, and a broad network of contacts during their career tenure. These unique inherent
qualities give them a competitive advantage to be successful Entrepreneurs compared to their younger cohorts. Despite that, the conversion rate for late-career PMETs to Entrepreneurship remains low, contributed by both a lack of income insecurity and a self-perceived state of entrepreneurial readiness.
Thus, this research aims to determine the inherent factors influencing the perceived readiness of our Respondents to identify and exploit entrepreneurial opportunities. Findings will contribute to conceiving a self-assessable scorecard to
assess the preparedness of late-career PMETs and assist in their transition to Entrepreneurship. It can also help trainers and educators develop appropriate curricula and pedagogies for more effective training interventions.
The study follows a thematic review of the literature and employs a quantitative survey on 384 purposefully selected samples of senior PMETs. Survey data collected through a digital questionnaire provided empirical findings that the inherent factors of Psychological and Human Capital do
significantly influence the late-career PMET's state of readiness towards opportunities. Findings on Social Capital revealed that the intangible determinants
such as network familiarity, shared cognition, shared trust and confidence are responsible for boosting network strength to influence the Respondents' perceived state of entrepreneurial readiness
Transgenic tomato overexpressing Brassica juncea 3-HYDROXY-3-METHYLGLUTARYL-COA SYNTHASE1 enhances health-promoting vitamin E, carotenoids, squalene and phytosterols
No full textTransgenic tomato overexpressing Brassica juncea 3-HYDROXY-3-METHYLGLUTARYL-COA SYNTHASE1 enhances health-promoting vitamin E, carotenoids, squalene and phytosterols Pan Liao1,2, Xinjian Chen1, Mingfu Wang1, Thomas J. Bach3, Mee-Len Chye1,2* 1School of Biological Sciences, The University of Hong Kong, Pokfulam Road, Hong Kong, China. 2Partner State Key Laboratory of Agrobiotechnology (CUHK). 3Centre National de la Recherche Scientifique, UPR 2357, Institut de Biologie Moléculaire des Plantes, 67083 Strasbourg, France. *Corresponding author: [email protected] Isoprenoids consist of a large group of functional natural products. For instance, dietary phytosterols are known to lower blood cholesterol levels. 3-Hydroxy-3-methylglutaryl-coenzyme A synthase (HMGS) is the second enzyme in the mevalonate (MVA) pathway which generate isoprenoids including phytosterols [1,2]. Previous studies on the enzyme kinetics of recombinant wild-type (wt) and mutant Brassica juncea HMGS1 had shown that the HMGS mutant enzyme S359A had a 10-fold higher activity [3]. Furthermore, the overexpression of B. juncea wt and mutant (S359A) BjHMGS1 in Arabidopsis upregulated native HMGR, SMT2, DWF1, CYP710A1 and BR60X2, thereby increasing sterol content [4]. Also, tobacco HMGS-overexpressors (OEs) enhanced native NtHMGR1, NtIPI2, NtSQS, NtSMT1-2, NtSMT2-1, NtSMT2-2 and NtCYP85A1 expression in seedlings, improving sterol content, plant growth and seed yield [5]. When wt and mutant (S359A) BjHMGS1 were overexpressed in a crop plant tomato (Solanum lycopersicum), gas chromatography–mass spectrometry (GC-MS) and high-performance liquid chromatography (HPLC) results showed that not only did the MVA-derived squalene and sterols, but also the methylerythritol phosphate (MEP)-derived carotenoids and vitamin E (α-tocopherol), increased, revealing crosstalk between the MVA and MEP pathways. Furthermore, OE-S359A fruits displayed greater squalene and phytosterol content than OE-wtBjHMGS1, as a result of higher expression of SlHMGR2, SlFPS1, SlGPS, SlSQS and SlCYP710A11 [6]. In summary, the manipulation of BjHMGS1 represents a promising strategy to simultaneously enhance health-promoting squalene, phytosterols, carotenoids and vitamin E in an edible fruit. This work was supported by the Wilson and Amelia Wong Endowment Fund, Research Grants Council of Hong Kong (AoE/M-05/12), Innovation Technology Fund of the Innovation Technology Commission (Support to Partner State Key Laboratories in Hong Kong) and HKU CRCG awards (0910159039, 1007160002, 1511159010). PL was supported by a University Postgraduate Fellowship and a Postdoctoral Fellowship. 1. Liao P, Hemmerlin A, Bach TJ, Chye ML. Biotechnol Adv, 2016, 34, 697-713. 2. Liao P, Wang H, Hemmerlin A, Nagegowda DA, Bach TJ, Wang M, Chye ML. Plant Cell Rep, 2014, 33, 1005- 1022. 3. Nagegowda DA, Bach TJ, Chye ML. Biochem J, 2004, 383, 517-527. 4. Wang H, Nagegowda DA, Rawat R, Bouvier-Navé P, Guo D, Bach TJ, Chye ML. Plant Biotechnol J, 2012, 10, 31-42. 5. Liao P, Wang H, Wang M, Hsiao AS, Bach TJ, Chye ML. PLoS One, 2014, 9, e98264. 6. Liao P, Chen X, Wang M, Bach TJ, Chye ML. Plant Biotechnol J, 2017, (DOI: 10.1111/pbi.12828)
From 1984 to birch: the politics of cultural and traditional arts/games in the plays of Kee Thuan Chye
No full textMalaysian playwright Kee Thuan Chye\u27s plays such as 1984 Here and Now, The Big Purge and We Could **** You, Mr. Birch have always placed Malaysian politics as their centre stage discourse. Through his plays, Kee provides an intimate glimpse of Malaysian politics and the individual who struggles to make meaning out of the drudgery of the power struggle between the state and the individual. While Kee\u27s focus, as Gilbert and Lo suggest in their \u27Introduction to 1984 Here and Now\u27, has been on how \u27existing hegemonic power structures perpetuate gross inequalities in the Malaysian society\u27, he has also touched on the social relations between communal groups that were discriminated against by race-based policies of the National Economic Policy (NEP). This paper takes a deeper look at the meaning of cultural/traditional recreational activities depicted in three of Kee\u27s political plays, arguing that activities are not mere social activities but a manifestation of a deeper network of symbolisms and the politics of representation and dissent against the hegemony of the political state
The Design of a CMOS 5.25GHz Differential Power Amplifier for 802.11a WLAN System
No full text本篇論文主旨在於實現適用於IEEE 802.11a 無線區域網路系統的功率放大器，在論文中的電路設計分為兩大部分，包括了CMOS 製程的放大電路和其外部匹配電路。其中CMOS 製程的放大電路採用台積電標準0.18微米1P6M互補式金氧半導體的製程來實現，而外部匹配電路則採用低溫共燒陶瓷技術(LTCC)實現。
本研究採用差動且自我偏壓的方式解決功率放大器操作在23.2dBm的功率下時會面臨的崩潰現象和熱載子現象，進而提高其可靠度。為了增加被動電路的Q值以增加整顆功率放大器的效率，本研究採用LTCC來實現外部匹配電路, 而且外部電路用LTCC取代PCB板的設計在未來可將整顆功率放大器整個為一SOP。另一方面，為了提高此功率放大器與中頻，低頻電路的整合，本研究採用TSMC提供之RF標準電晶體模型，且電壓定於1.8V。The purpose of this thesis is to present a power amplifier which can be used in WLAN 802.11a system. Two major parts are included, the first part is power amplifier chip implemented by CMOS process while the other part is the output matching network. The amplifier chip is implemented by TSMC 0.18um CMOS process, and the output matching network is implemented by low temperature co-fired ceramic (LTCC) process.
We adopt differential self-biased topology in the power amplifier to overcome the problems of hot carrier effect and break down effect when the power amplifier is operating in 23.2dBm output power. Accordingly, the differential self-biased topology can improved the reliability of power amplifier significantly. Moreover, the output matching network which implemented by LTCC, with inherently high Q factor, can improved the efficiency of the total power amplifier. The replacement of PCB board discrete passive components with LTCC will allow the realization the concept of SOP (System on Package) in the near future. Furthermore, the implementation of power amplifier with TSMC 0.18μm CMOS process and with DC voltage of 1.8V makes it possible to integrate the IF and base-band circuits in a single chip.List of Figures vi
List of Tables vii
CHAPTER 1 Introduction 1
1.1 WLAN Communication Architecture 1
1.2 SOC for WLAN Communication System 2
1.3 Introduction of LTCC 3
1.3.1 Fabrication process 3
1.3.2 Materials used 4
1.3.3 Advantages 4
1.3.3.1 Cost reduction 4
1.3.3.2 Reduction in size 5
1.3.3.3 Low loss at microwave frequency 5
1.3.3.4 Stable dielectric constant with respect to frequency 5
1.3.4 RF system on package (SOP) for wireless communications. 5
1.3.4.1 Advantages 6
1.4 Overview 7
CHAPTER 2 Power Amplifier Specification 9
2.1 IEEE 802.11a Specification Review 9
2.1.1 Introduction of orthogonal frequency division multiplexing (OFDM). 9
2.1.2 OFDM used in 802.11a 12
2.2 Receiver and Transmitter Specification in 802.11a 13
2.3 Basic Concepts in RF Design 15
2.3.1 Power gain 15
2.3.2 1-dB compression point 15
2.3.3 Third-order interception point 17
2.3.4 Return loss and isolation 20
2.3.5 Stability 21
CHAPTER 3 CMOS Power Amplifier for 802.11a WLAN Application 23
3.1 Previous art 23
3.2 Research Motivation 23
3.3 Self-biased Configuration 24
3.4 Power Amplifier Design 31
3.4.1 Transistors cell size selection 32
3.4.2 DC biasing of self-biased stage 33
3.4.3 Input matching network 33
3.4.4 First driver stage power amplifier 34
3.4.5 Inter-stage matching network 34
3.4.6 Second power stage power amplifier 34
3.4.7 Output matching network 35
CHAPTER 4 The Matching Network Design in LTCC 37
4.1 LTCC Description 37
4.2 Output Matching Network Design 37
4.2.1 Capacitor 39
4.2.2 Inductor 40
4.2.3 Complete output matching network 42
4.3 Bond-wire Modeling 44
CHAPTER 5 Simulation Results and Measurement Procedures 45
5.1 Simulation Results 45
5.1.1 Scattering parameters 45
5.1.2 Stability 47
5.1.3 Simulation results for large signal 47
5.1.4 Power add efficiency (PAE) 49
5.1.5 Performance to be expected 50
5.1.6 Performance comparison 50
5.2 Complete Layout 51
5.3 Measurement Procedures 52
5.3.1 Small signal measurement 53
5.3.2 Large signal measurement 53
CHAPTER 6 Conclusion 57
References 5
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