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Simulation of multivariate non-Gaussian wind pressure on spherical latticed structures
Nyi Nyi Aung,Ye Jihong,F.J. Masters 한국풍공학회 2012 Wind and Structures, An International Journal (WAS Vol.15 No.3
Multivariate simulation is necessary for cases where non-Gaussian processes at spatially distributed locations are desired. A simulation algorithm to generate non-Gaussian wind pressure fields is proposed. Gaussian sample fields are generated based on the spectral representation method using wavelet transforms method and then mapped into non-Gaussian sample fields with the aid of a CDF mapping transformation technique. To illustrate the procedure, this approach is applied to experimental results obtained from wind tunnel tests on the domes. A multivariate Gaussian simulation technique is developed and then extended to multivariate non-Gaussian simulation using the CDF mapping technique. It is proposed to develop a new wavelet-based CDF mapping technique for simulation of multivariate non-Gaussian wind pressure process. The efficiency of the proposed methodology for the non-Gaussian nature of pressure fluctuations on separated flow regions of different rise-span ratios of domes is also discussed.
분자선 에피탁시법으로 성장한 Te 도핑된 GaSb 박막의 전기적 특성
Aung Khaing Nyi,김시영(Si Young Kim),이웅(Woong Lee),오승준(Seungjun Oh),정미나(Mina Jung),박승환(Seunghwan Park),오동철(Dong-cheol Oh),이상태(Sang Tae Lee),조영래(Young Rae Cho),장지호(Ji Ho Chang),이홍찬(Hong Chan Lee) 한국항해항만학회 2008 한국항해항만학회 학술대회논문집 Vol.2008 No.공동학술
The electrical properties of GaSb films were investigated. Electrical properties were measured by Hal1 measurements with Van der Pauw configuration and performed in the temperature range from 10 to 300K. Te doped GaSb layers (with/without ZnTe buffer) were grown by molecular beam epitaxy. The experimental results are compared to the theory, Brooks-Herring scattering theory, based on the two-layer Hal1 effect model. We considered the four major scattering mechanisms effects. The role of ZnTe buffer to the electrical properties is discussed.
Electrical transport properties of GaSb: Te films grown by Molecular Beam Epitaxy
Aung Khaing Nyi,김시영(Si Young Kim),이웅(Woong Lee),오승준(Seungiun Oh),정미나(Mina Jung),박승환(Seunghwan Park),오동철(Dong-cheol Oh),이상태(Sang Tae Lee),조영래(Young Rae Cho),장지호(Ji Ho Chang),이홍찬(Hng Chan Lee) 한국마린엔지니어링학회 2008 한국마린엔지니어링학회 학술대회 논문집 Vol.2008 No.-
The electrical properties of GaSb films were investigated. Electrical properties were measured by Hall measurements with Van der Pauw configuration and performed in the temperature range from 10 to 300k. Te doped GaSb layers (wit/without ZnTe buffer) were grown by molecular beam epitaxy. The experimental results are compared to the theory, Brooks-Herring scattering theory, based on the two-layer Hall effect model. We considered the four major scattering mechanisms effects. The role of ZnTe buffer to the electrical properties is discussed.
Razak, Nuradhiathy Abd,Khattak, M.N.,Zubairi, Yong Zulina,Naing, Nyi Nyi,Zaki, Nik Mohamed Asian Pacific Journal of Cancer Prevention 2013 Asian Pacific journal of cancer prevention Vol.14 No.2
Objective: The objective of this study was to determine the five-year survival among patients with cervical cancer treated in Hospital Universiti Sains Malaysia. Methods: One hundred and twenty cervical cancer patients diagnosed between $1^{st}$ July 1995 and $30^{th}$ June 2007 were identified. Data were obtained from medical records. The survival probability was determined using the Kaplan-Meier method and the log-rank test was applied to compare the survival distribution between groups. Results: The overall five-year survival was 39.7% [95%CI (Confidence Interval): 30.7, 51.3] with a median survival time of 40.8 (95%CI: 34.0, 62.0) months. The log-rank test showed that there were survival differences between the groups for the following variables: stage at diagnosis (p=0.005); and primary treatment (p=0.0242). Patients who were diagnosed at the latest stage (III-IV) were found to have the lowest survival, 18.4% (95%CI: 6.75, 50.1), compared to stage I and II where the five-year survival was 54.7% (95%CI: 38.7, 77.2) and 40.8% (95%CI: 27.7, 60.3), respectively. The five-year survival was higher in patients who received surgery [52.6% (95%CI: 37.5, 73.6)] as a primary treatment compared to the non-surgical group [33.3% (95%CI: 22.9, 48.4)]. Conclusion: The five-year survival of cervical cancer patients in this study was low. The survival of those diagnosed at an advanced stage was low compared to early stages. In addition, those who underwent surgery had higher survival than those who had no surgery for primary treatment.
Siti-Azrin, Ab Hamid,Norsa'adah, Bachok,Naing, Nyi Nyi Asian Pacific Journal of Cancer Prevention 2014 Asian Pacific journal of cancer prevention Vol.15 No.15
Background: Nasopharyngeal carcinoma (NPC) is the fourth most common cancer in Malaysia. The objective of this study was to determine the five-year survival rate and median survival time of NPC patients in Hospital Universiti Sains Malaysia (USM). Methods: One hundred and thirty four NPC cases confirmed by histopathology in Hospital USM between $1^{st}$ January 1998 and $31^{st}$ December 2007 that fulfilled the inclusion and exclusion criteria were retrospectively reviewed. Survival time of NPC patients were estimated by Kaplan-Meier survival analysis. Log-rank tests were performed to compare survival of cases among presenting symptoms, WHO type, TNM classification and treatment modalities. Results: The overall five-year survival rate of NPC patients was 38.0% (95% confidence interval (CI): 29.1, 46.9). The overall median survival time of NPC patients was 31.30 months (95%CI: 23.76, 38.84). The significant factors that altered the survival rate and time were age (p=0.041), cranial nerve involvement (p=0.012), stage (p=0.002), metastases (p=0.008) and treatment (p<0.001). Conclusion: The median survival of NPC patients is significantly longer for age ${\leq}50$ years, no cranial nerve involvement, and early stage and is dependent on treatment modalities.
Recommended nuclear data for medical radioisotope production: diagnostic positron emitters
Tá,rká,nyi, F. T.,Ignatyuk, A. V.,Hermanne, A.,Capote, R.,Carlson, B. V.,Engle, J. W.,Kellett, M. A.,Kibé,di, T.,Kim, G. N.,Kondev, F. G.,Hussain, M.,Lebeda, O.,Luca, A.,Nagai, Y.,Na Springer-Verlag 2019 Journal of Radioanalytical and Nuclear Chemistry Vol.319 No.2
Stanislav Vajı´cˇek,Magdale´na Sˇtolcova´,Alexander Kaszonyi,Matej Micˇusˇı´k,Pavel Alexy c, Patrizia Canton,Patrizia Canton,Gyo¨ rgy Onyestya´k,Szabolcs Harnos,Ferenc Lo´ nyi,Jo´ zsef Valyon 한국공업화학회 2016 Journal of Industrial and Engineering Chemistry Vol.39 No.-
Palladium-bismuth nanoparticles were supported into strongly basic anion-exchange resin of gel-typeand tested as catalysts for the selective oxidation of glycerol with molecular oxygen at atmosphericpressure. Detailed study of the precursors preparation and reduction were undertaken. The catalyst3%Pd-1%Bi where the bismuth was deposited on the palladium particles (3.4 nm) exhibited at 95%glycerol conversion more than 63% yield toward glyceric acid and tartronic acid after 3 h of reaction. Thecatalyst maintains practically similar catalytic performance as in fresh state for at least five consecutivecatalytic cycles without extra catalyst treatment and reactivation.