147 research outputs found
Sistem E-DJ Player / Wong Hock Lin
No full textSistem E-DJ Player merupakan satu perisian untuk memainkan muzik dengan melalui komputer. Sistem ini bukan sahaja untuk mendengar lagu, ia juga dapat menkategorikan lagu berdasarkan jenis penyanyi, jenis album dan jenis audio. Selain itu, sistem ini juga dapat melakukan equalizer supaya pengguna boleh menyelara kualiti bunyai yang disukai. Berbanding dengan sistem sedia ada seperti Winamp,Windows Media Player, Cowon Jet-Audio dan sebagainya, system E-DJ Player dapat melaksanakan gabungan fungsi yang terdapat pada sistem ada. Metodologi yang digunakan untuk pembangunan sistem yang akan dibangun adalah model Air Terjun dan model Prototaip. Model ini membenarkan pembangun menilai sebehagian dari aspek sistem yang dicadang pada fasa awal. Perisian yang digunakan dalam pembangunan Sistem E-DJ Player adalah seperti Borland Jbuilder, Adobe Photoshop digunakan untuk mengedit gambar dan Microsoft Visio Profesional digunakan untuk membina Rajah Aliran Data (DFD). Microsoft SQL Server 2000 digunakan untuk mengurus pengkalan data. Beberapa kaedah penyelidikan digunakan untuk mendapatt keperluan-keperluan sistem. Ini termasuk borang selidik, pemerhatoam, melalui Internet, perbincangan dan lain-lain. Seterusnya, rekabentuk sistem dikaji dengan melibatkan tiga jenis rekabentuk iaitu senibina aplikasi, seni bina pengkalan data dan senibina antara muka. Sebagai kesimpulan, Sistem E-DJ Plyer dibangunkan dapat menghiburkan pengguna dan memberi perasaan selesa kepada pengguna secara tidak langsung
Screening for HIV protease inhibitors by protection against activity-mediated cytotoxicity in Escherichia coli
No full text
Performance of Single-Nucleotide Polymorphisms in Breast Cancer Risk Prediction Models: A Systematic Review and Meta-analysis
No full text10.1158/1055-9965.EPI-18-0810CANCER EPIDEMIOLOGY BIOMARKERS & PREVENTION283506-52
Jin shu na mi zhou qi jie gou shang de biao mian deng li ji hua ji yuan ruo ou he ji qiang ou he zuo yong xia de fa guang cai liao de ji fa lu yan jiu
No full textPh.D.Surface plasmon polaritons (SPPs) confine electromagnetic field to a sub-wavelength dimension at the metal-dielectric interface, thus strongly modifying the properties of light emitters when they are placed close to the field. The interaction between SPPs and light emitters has been attracting worldwide attention recently due to its importance to a wide range of applications such as fluorescence enhancement, light energy harvesting, bio-sensing and nonlinear optics, etc. While it is known that the interaction can be divided into excitation and emission enhancements in which the excitation and emission rates of the light emitters can be increased significantly, the exact role of how SPPs play in such enhancements has not yet been studied clearly. In addition, the interaction can be further classified into weak and strong coupling regimes, making the underlying physics more multifaceted.In this thesis, we combine the rate equation model and temporal coupled mode theory (CMT) to formulate the SPP mediated excitation rates of light emitters within the framework of weak and strong couplings. Remarkably, the excitation rates are expressed in terms of physical quantities that not only gain us further understanding on how SPPs affect the absorption of light emitters but also are measurable by conventional angle- and polarization- resolved reflectivity and photoluminescence spectroscopy. For the weak coupling, we have studied the excitation rate of CdSeTe quantum dots deposited on a 2D Au nanohole array as a function of SPP momentum, i.e. propagation direction. It is found that the excitation rate remains almost constant regardless of the propagation of SPPs. On the other hand, for the strongly coupled system, we find the CMT model can be mapped directly from the Jaynes-Cummings model, thus providing a classical analogy for study the quantum mechanical process. As a demonstration, the excitation rate of J-aggregated dyes deposited on a 2D Au nanohole array is determined as a function of excitation wavelength. Our works elucidate the underlying physics of surface plasmon mediated fluorescence and at the same time provide guidelines for rational designing the plasmonic systems with the best performance in the future.表面等離極化激元將電磁場束縛在金屬-電介質介面的亞波長範圍之內，因此極大地改變了處於電磁場附近的發光材料的性質。近年來，表面等離極化激元與發光材料的相互作用吸引了來自全世界的關注，因為它對一系列廣泛的應用非常重要，例如螢光增強，光能量收集，生物傳感，非線性光學等等。雖然我們知道這種相互作用可以被分為激發增強和發射增強，在其中激發率和發射率分別會得到顯著提高，但是表面等離極化激元在這些增強中所起的具體作用卻還未被研究透徹。另外，這種相互作用還可以進一步被分為弱耦合和強耦合作用，這使得其中的物理變得更加複雜。在這篇論文中，我們利用速率方程和耦合模式理論求出發光材料與表面等離極化激元弱耦合及強耦合作用中激發率的公式。令人值得注意的是，該公式中的參數不僅可以讓人更深入理解表面等離極化激元如何影響發光材料的吸收，而且也可以由傳統的角度及偏振分辨反射率和光致發光光譜測量得到。一方面，在弱耦合的研究中，我們得到了二維金納米洞陣列上硒碲化鎘量子點的激發率，該激發率是在表面等離極化激元不同動量，即不同傳播方向的情況下得到的。我們發現激發率幾乎並不隨著表面等離極化激元傳播方向的改變而改變。另一方面，在強耦合的研究中，我們發現耦合模式理論可以直接匹配傑恩斯-卡明斯模型，為研究量子力學過程提供了經典的方法。作為該模型的應用，我們得到二維金納米洞陣列上J聚集體染料在不同激發波長情況下的激發率。我們的工作闡明了表面等離極化激元增強螢光作用的內在物理，同時也為未來設計具有最佳效率的表面等離極化激元系統提供了指導。Lin, Min = 金屬納米週期結構上的表面等離極化激元弱耦合及強耦合作用下的發光材料的激發率研究 / 林旻.Thesis Ph.D. Chinese University of Hong Kong 2019.Includes bibliographical references (leaves 94-99).Abstracts also in Chinese.Title from PDF title page (viewed on 23, December, 2020).Lin, Min = Jin shu na mi zhou qi jie gou shang de biao mian deng li ji hua ji yuan ruo ou he ji qiang ou he zuo yong xia de fa guang cai liao de ji fa lu yan jiu / Lin Min
Global trends and gaps in research related to latent tuberculosis infection
No full text10.1186/s12889-020-8419-0BMC Public Health20135
End user development: What influences the relationship between satisfaction with tools and satisfaction with applications
No full textThis study explored the possible role of four factors in the relationship between end user developers’ perceptions of their applications and their perceptions of the tools used to create them. Satisfaction with a user developed application was found to be significantly correlated with satisfaction with the tool used to create the application regardless of the provision of feedback about the application, or level of spreadsheet development knowledge. Previous experience with another spreadsheet development tool did however appear to influence the relationship, suggesting that end user developers would benefit from experience with a variety of development tools
Women’s preferences, willingness-to-pay, and predicted uptake for single-nucleotide polymorphism gene testing to guide personalized breast cancer screening strategies: a discrete choice experiment
No full textXin Yi Wong,1 Catharina GM Groothuis-Oudshoorn,2 Chuen Seng Tan,3 Janine A van Til,2 Mikael Hartman,3,4 Kok Joon Chong,5 Maarten J IJzerman,2,6,7 Hwee-Lin Wee1,3 1Department of Pharmacy, Faculty of Science, National University of Singapore, Singapore, Republic of Singapore; 2Department of Health Technology and Services Research, Faculty of Behavioural, Management and Social Sciences, Technical Medical Centre, University of Twente, Enschede, The Netherlands; 3Saw Swee Hock School of Public Health, National University of Singapore and National University Health System, Singapore, Republic of Singapore; 4Department of Surgery, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Republic of Singapore; 5Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Republic of Singapore; 6Faculty of Medicine, Dentistry and Health Sciences, University of Melbourne, Melbourne, Australia; 7Victorian Comprehensive Cancer Centre, Melbourne, Australia Background: Single-nucleotide polymorphism (SNP) gene test is a potential tool for improving the accuracy of breast cancer risk prediction. We seek to measure women’s preferences and marginal willingness-to-pay (mWTP) for this new technology. Materials and methods: We administered a discrete choice experiment (DCE) to English-speaking Singaporean women aged 40–69 years without any history of breast cancer, enrolled via door-to-door recruitment with quota sampling by age and ethnicity. DCE attributes comprise: 1) sample type (buccal swab and dried blood spot), 2) person conducting pretest discussion (specialist doctor, non-specialist doctor, and nurse educator), 3) test location (private family clinic, public primary-care clinic, and hospital), and 4) out-of-pocket cost (S175, and S300). Mixed logit model was used to estimate the effect of attribute levels on women’s preferences and mWTP. Interactions between significant attributes and respondent characteristics were investigated. Predicted uptake rates for various gene testing scenarios were studied. Results: A total of 300 women aged 52.6±7.6 years completed the survey (100 Chinese, Malay, and Indian women, respectively). Sample type (P=0.046), person conducting pretest discussion, and out-of-pocket cost (P<0.001) are significantly associated with going for SNP gene testing. Women with higher income and education levels are more willing to pay higher prices for the test. Preferences in terms of mWTP across ethnic groups appear similar, but Chinese women have greater preference heterogeneity for the attributes. Predicted uptake for a feasible scenario consisting of buccal swab, pretest discussion with nurse educator at the hospital costing S50 is 60.5%. Only 3.3% of women always opted out of the SNP gene test in real life. Reasons include high cost, poor awareness, and indifference toward test results. Conclusion: SNP gene testing may be tailored according to individual preferences to encourage uptake. Future research should focus on outcomes and cost-effectiveness of personalized breast cancer screening using SNP gene testing. Keywords: single-nucleotide polymorphisms, gene testing, personalized breast cancer screening, preci­sion medicine, women’s preferences, willingness-to-pay, predicted uptake, discrete choice experimen
Hypertension management and lifestyle changes following screening for hypertension in an Asian low socioeconomic status community: A prospective study
No full textAnnals of the Academy of Medicine Singapore429451-465AAMS
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