안전하고 효율적인 인증키 교환 프로토콜

김태희 동신대학교 2006 論文集 Vol.16 No.-

패스워드가 계산상 불가능한 공간에서 무작위로 선택된 두 개의 값에 의해 표현되는 것을 특징으로 하는 Authenticated key exchange protocols을 위한 스키마인 Augmented Password AKE (APAKE)을 제안한다. 오프라인 추측 공격과 서버 컴프로마이즈 공격으로부터 안전하고, 패스 수가 2이며 작은 계산량을 필요로 하는 APAKE 프로토콜을 제시한다. 또한 제안하는 APAKE 프로토콜의 안전성과 효율성을 상속하는 EKE 프로토콜을 제시한다. This paper introduces a new scheme, called Augmented Password AKE (APAKE), for authenticated key exchange protocols. In APAKE, a password is represented by a pair of values that is randomly selected in a huge space. We present an APAKE protocol. The protocol is secure against the attacks including off-line dictionary attack and server compromise allowing for subsequent off-line dictionary attack. The protocol has a pass number of two, and it requires minor computational amounts. We also present a EKE protocol designed by simple modification of the APAKE protocol while preserving the security of the APAKE protocol.

A skin-inspired organic digital mechanoreceptor

Tee, Benjamin C.-K.,Chortos, Alex,Berndt, Andre,Nguyen, Amanda Kim,Tom, Ariane,McGuire, Allister,Lin, Ziliang Carter,Tien, Kevin,Bae, Won-Gyu,Wang, Huiliang,Mei, Ping,Chou, Ho-Hsiu,Cui, Bianxiao,Deiss American Association for the Advancement of Scienc 2015 Science Vol.350 No.6258

<P><B>Sensing the force digitally</B></P><P>Our skin provides us with a flexible waterproof barrier, but it also contains a sensor array that feels the world around us. This array provides feedback and helps us to avoid a hot object or increase the strength of our grip on an object that may be slipping away. Tee <I>et al.</I> describe an approach to simulate the mechanoreceptors of human skin, using pressure-sensitive foils and printed ring oscillators (see the Perspective by Anikeeva and Koppes). The sensor successfully converted pressure into a digital response in a pressure range comparable to that found in a human grip.</P><P><I>Science</I>, this issue p. 313; see also p. 274</P><P>Human skin relies on cutaneous receptors that output digital signals for tactile sensing in which the intensity of stimulation is converted to a series of voltage pulses. We present a power-efficient skin-inspired mechanoreceptor with a flexible organic transistor circuit that transduces pressure into digital frequency signals directly. The output frequency ranges between 0 and 200 hertz, with a sublinear response to increasing force stimuli that mimics slow-adapting skin mechanoreceptors. The output of the sensors was further used to stimulate optogenetically engineered mouse somatosensory neurons of mouse cortex in vitro, achieving stimulated pulses in accordance with pressure levels. This work represents a step toward the design and use of large-area organic electronic skins with neural-integrated touch feedback for replacement limbs.</P>

Determination of normative reference for the definition of sarcopenia among Filipinos

Michael L. Tee,Cherica A. Tee,Elizabeth B. Montemayor 대한골다공증학회 2016 Osteoporosis and Sarcopenia Vol.2 No.3

Background: At present, there is no normative value that can be used in the definition of sarcopenia in the Philippines. Objective: We identified the reference cut-off values for: 1) muscle mass using bioimpedance analysis; 2) grip strength; 3) usual gait speed; 4) timed get-up-and-go; and 5) short physical performance battery in the Philippines in order to adapt the European Working Group on Sarcopenia in Older People (EWGSOP) criteria for the definition of sarcopenia. Methods: Two hundred seventy six (135 males and 141 females) healthy Filipino adults, between 20 and 40 years, were included in this cross sectional study. A Fresenius Body Composition Monitor was used to measure lean tissue mass (LTM) and lean tissue index (LTI). A dynamometer was used to measure grip strength. Usual gait speed, timed get-up-and-go, and short physical performance battery were also determined. Result: The normative references for males and females, respectively, for LTI were 17.10 þ 2.337 kg/m2 and 12.63 þ 2.119 kg/m2; for usual gait speed were 1.06 þ 0.251 m/sec and 0.930 þ 0.144 m/sec; and for grip strength were 39.76 þ 7.567 kg and 26.68 þ 5.243 kg. The sarcopenia cut-points for the males and females, respectively, for LTI were <12.50 kg/m2 and <8.33 kg/m2; for usual gait speed were <0.55 m/sec and <0.65 m/sec; and for grip strength were <24.54 kg and <16.10 kg. Conclusion: This study presents cut-points for the determination of sarcopenia at-risk population among Filipinos.

Successful Treatment of Cavernous Sinus Metastasis from Follicular Thyroid Carcinoma with Lenvatinib

Tee Sin Lee,Anna See,Caleb Lim,Xin Yong Huang 대한갑상선학회 2020 International Journal of Thyroidology Vol.13 No.1

Radioiodine-refractory distant metastases in well-differentiated thyroid carcinomas are rare but pose a significant diagnostic and management challenge. Follicular thyroid carcinoma which is a type of well-differentiated carcinoma, is known for its hematogenous spread. Various sites of distant metastasis have been described. We report the first-ever case of radioiodine-refractory metastasis at the cavernous sinus, arising from follicular thyroid carcinoma. The atypical site of metastasis and management complexity of radioiodine-refractory disease is discussed in this article.

Social Determinants of Health and Tobacco Use in Five Low - and Middle-Income Countries - Results from the Global Adult Tobacco Survey (GATS), 2011 - 2012

Tee, Guat Hiong,Aris, Tahir,Rarick, James,Irimie, Sorina Asian Pacific Journal of Cancer Prevention 2016 Asian Pacific journal of cancer prevention Vol.17 No.3

Background: Tobacco consumption continues to be the leading cause of preventable deaths globally. The objective of this study was to examine the associaton of selected socio-demographic variables with current tobacco use in five countries that participated in the Phase II Global Adult Tobacco Survey in 2011 - 2012. Materials and Methods: We analysed internationally comparable representative household survey data from 33,482 respondents aged ${\geq}15years$ in Indonesia, Malaysia, Romania, Argentina and Nigeria for determinants of tobacco use within each country. Socio-demographic variables analysed included gender, age, residency, education, wealth index and awareness of smoking health consequences. Current tobacco use was defined as smoking or use of smokeless tobacco daily or occasionally. Results: The overall prevalence of tobacco use varied from 5.5% in Nigeria to 35.7% in Indonesia and was significantly higher among males than females in all five countries. Odds ratios for current tobacco use were significantly higher among males for all countries [with the greatest odds among Indonesian men (OR=67.4, 95% CI: 51.2-88.7)] and among urban dwellers in Romania. The odds of current tobacco use decreased as age increased for all countries except Nigeria where. The reverse was true for Argentina and Nigeria. Significant trends for decreasing tobacco use with increasing educational levels and wealth index were seen in Indonesia, Malaysia and Romania. Significant negative associations between current tobacco use and awareness of adverse health consequences of smoking were found in all countries except Argentina. Conclusions: Males and the socially and economically disadvantaged populations are at the greatest risk of tobacco use. Tobacco control interventions maybe tailored to this segment of population and incorporate educational interventions to increase knowledge of adverse health consequences of smoking.

System Identification and Damage Estimation via Substructural Approach

Tee, K.-F.,Koh, C.-G.,Quek, S.-T. Computational Structural Engineering Institute of 2003 Computational structural engineering Vol.3 No.1

For system identification of large structures, it is not practical to identify the entire structure due to the prohibitive computational time and difficulty in numerical convergence. This paper explores the possibility of performing system identification at substructure level, taking advantage of reduction in both the number of unknowns and the number of degrees of freedom involved. Another advantage is that different portions (substructures) of a structural system can be identified independently and even concurrently with parallel computing. Two substructural identification methods are formulated on the basis whether substructural approach is used to obtain first-order or second-order model. For substructural first-order model, identification at the substructure level will be performed by means of the Observer/Kalman filter Identification (OKID) and the Eigensystem Realization Algorithm (ERA) whereas identification at the global level will be performed to obtain second-order model in order to evaluate the system's stiffness and mass parameters. In the case of substructural second-order model, identification will be performed at the substructure level throughout the identification process. The efficiency of the proposed technique is shown by numerical examples for multi-storey shear buildings subjected to random forces, taking into consideration the effects of noisy measurement data. The results indicate that both the proposed methods are effective and efficient for damage identification of large structures.

A Study of Tjhie Tjay Ing’s Views of Confucian Religion in Indonesia

( Tee Boon Chuan ) 성균관대학교 유교문화연구소 2015 儒敎文化硏究(中文版) Vol.0 No.23

本文是對印尼孔敎界譽之爲印尼孔敎百科全書及“學師的學師”的孔敎精神領袖徐再英(Tjhie Tjay Ing)的孔敎觀硏究, 而集中評析他在2006年《儒敎基礎敎育嚮導課本》一書所表達的孔敎敎義觀。按本文的釋析, 徐再英是在前人歸納出來的“八誠箴規”(Delapan Pengakuan Iman)之敎義基礎上, 進一步予以經文闡釋與證說, 但這些努力成果都還未臻學理精純之境。這當中的學術原因, 旣有來自對伊斯蘭敎“六誠箴規”信條的借鑒、調整的不成功之客觀因素, 也有徐再英個人及印尼孔敎總體對傳統儒家的禮學體系不熟悉的主觀條件所導致。 This paper attempts to analyze how Tjhie Tjay Ing, an encyclopedic spiritual master of the Confucian religion in Indonesia, understood the Confucian tradition. This paper argues that Tjhie’s view of Confucian religion is not as sophisticated and systematic as he endeavors to show through his presentation of the doctrinal eight creeds of confucian rligion in his Fundamental Textbooks of Confucian Religion (2006). This is because his creeds are an unsuccessful imitation of the six creeds of Islamic religion. Furthermore, his book reveals an essential misunderstanding of the Confucian ritual systems. [Article in Chinese]

Systematic Review on International Practices in Controlling Waterpipe Tobacco Smoking

Tee, Guat Hiong,Hairi, Noran N,Nordin, Fauziah,Choo, Wan Yuen,Chan, Ying Ying,Kaur, Gurpreet,Veerasingam, Pathma Devi,Bulgiba, Awang Asian Pacific Journal of Cancer Prevention 2015 Asian Pacific journal of cancer prevention Vol.16 No.9

Background: Waterpipe tobacco smoking has becoming popular especially among young people worldwide. Smokers are attracted by its sweeter, smoother smoke, social ambience and the misconception of reduced harm. The objective of this study was to systematically review the effects of waterpipe tobacco policies and practices in reducing its prevalence. Materials and Methods: A systematic review was conducted electronically using the PubMed, OVID, Science Direct, Proquest and Embase databases. All possible studies from 1980 to 2013 were initially screened based on titles and abstracts. The selected articles were subjected to data extraction and quality rating. Results: Three studies met the inclusion criteria and were eligible for this review. Almost all of the waterpipe tobacco products and its accessories did not comply with the regulations on health warning labelling practices as stipulated under Article 11 of WHO FCTC. In addition, the grisly new warning labels for cigarettes introduced by Food and Drug Administration did not affect hookah tobacco smoking generally. Indoor air quality in smoking lounges was found to be poor and some hookah lounges were operated without smoke shop certification. Conclusions: Our findings revealed the availability of minimal information on the practices in controlling waterpipe smoking in reducing its prevalence. The lack of comprehensive legislations or practices in controlling waterpipe smoking warrants further research and policy initiatives to curb this burgeoning global epidemic, especially among the vulnerable younger population.

Probabilistic failure analysis of underground flexible pipes

Tee, Kong Fah,Khan, Lutfor Rahman,Chen, Hua-Peng Techno-Press 2013 Structural Engineering and Mechanics, An Int'l Jou Vol.47 No.2

Methods for estimating structural reliability using probability ideas are well established. When the residual ultimate strength of a buried pipeline is exceeded the limit, breakage becomes imminent and the overall reliability of the pipe distribution network is reduced. This paper is concerned with estimating structural failure of underground flexible pipes due to corrosion induced excessive deflection, buckling, wall thrust and bending stress subject to externally applied loading. With changes of pipe wall thickness due to corrosion, the moment of inertia and the cross-sectional area of pipe wall are directly changed with time. Consequently, the chance of survival or the reliability of the pipe material is decreased over time. One numerical example has been presented for a buried steel pipe to predict the probability of failure using Hasofer-Lind and Rackwitz-Fiessler algorithm and Monte Carlo simulation. Then the parametric study and sensitivity analysis have been conducted on the reliability of pipeline with different influencing factors, e.g. pipe thickness, diameter, backfill height etc.

Southeast Asian Confucianism from an Islamic Studies’ Viewpoint

( Tee Boon-chuan ) 성균관대학교 유교문화연구소 2008 儒敎文化硏究(中文版) Vol.0 No.10

本文旨在对东南亚儒教、儒学与伊斯兰教、伊斯兰学的发展水平与差距进行比对, 发现与后者教、学合一之关系相较, 东南亚儒教与儒学乃是一种脱钩的存在, 即“儒教”族群既不自觉其为儒教社会的一环, 而当地儒学又多属学术史意义之中国儒学史的研究, 故东南亚儒教与其儒学之涵意或构成为何, 均有待吾人发掘而后能明之。按本文过去的研究与了解, 儒学内容不外“心、礼、天”三项, 而此在东南亚均有其儒教之实践形式, 即“心”首先被新加坡理解为“把社群利益放在个人利益之上的思想”之意, 而印度尼西亚与马来西亚则以为是“共存共荣的平等思想”;在实践上, 前者把“礼”视为“社群利益”即“创立足够的共同价值观以及一个单一的国家观念”之大一统体制如何建立之事, 而后者则要求国家平等对待与保障华文教育(华教)与孔教的生存空间与权利, 可见彼此关注的是“礼制”而非“礼仪”之“礼”;由此一来, “天”因为大一统的意识而有“新加坡实在太小”、“才孜孜不倦地向其他的世界领导人宣扬他的理念”和另一由于保卫一己权益而有“服务华社, 解救华人的困境”之狭化之虞的两种理境之差别。唯上述儒教意义之儒学与当地学界纯属中国儒学史之儒学二种, 从伊斯兰学的角度来看, 均有对“心”或心性之学作为儒学之根基(点)之体认不深、对“心”外化而为“礼”、“礼”尽显而为“天”之联系(线)之认知不全及徒知“礼”有“礼制”而不知其另有“礼仪”之一面(面)而为知解不周之缺失。故儒教、儒学在东南亚之发展, 其首要之务在使教与学能如伊斯兰教、伊斯兰学那样合之一, 再逐一改进其“点不深、线不全、面不周”之缺失, 或未可否。 The paper aim to explore the current trend of both Confucianism practise in society and Confucian Studies in academia compared with Islam and Islamic Studies in Southeast Asia. From the local Islam and Islamic Studies’ point of view, the Confucianism practicing in Singapore, Malaysia and Indonesia are irrelevant to the Confucian Studies because the latter’s subject matter is composed mainly of Confucianism in China from the ancient to modern times. Besides the disconnected Confucianism and Confucian Studies, both share the same concern about contextualizing Confucian ritual institution (‘lizhi’) into Southeast Asian condition while ignoring the importance of its foundational doctrine of Heart-Mind (‘xin’) and ultimate spirit of Heaven (‘tian’). In other words, the Confucianism and Confucian Studies were not on a par with Islam and Islam Studies today in Southeast Asian countries. [Article in Chinese]