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.

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.

Holomorphic Distribution on Pseudo-Einstein Real Hypersurfaces of a Complex Space Form

Tee-How Loo 경북대학교 자연과학대학 수학과 2003 Kyungpook mathematical journal Vol.43 No.3

In this paper we characterize pseudo-Einstein real hypersurfaces of a non-flat complex space form under certain conditions on the holomorphic distribution.

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.

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.

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]

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.

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.