• 대한수학회보
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• 제46권5호
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• pp.823-833
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• 2009

It is well-known that if a convex hyperbolic polygon is constructed as a fundamental domain for a subgroup of the modular group, then its translates by the group elements form a locally finite tessellation and its side-pairing transformations form a system of generators for the group. Such hyperbolically convex polygons can be obtained by using Dirichlet's and Ford's polygon constructions. Another method of obtaining a fundamental domain for subgroups of the modular group is through the use of a right coset decomposition and we call such domains standard fundamental domains. In this paper we give subgroups of the modular group which do not have hyperbolically convex standard fundamental domain containing only inequivalent cusps.

• 셀메드
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• 제6권2호
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• pp.10.1-10.3
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• 2016

Arirang has quite a long history in Korean music. Arirang means the heart is tingling. Jeongseon Arirang is well-known Arirang from the Gangwon province, so it shares certain features of Dongbu minyo (folksong), including the Menaritori. Jeongseon Arirang of Ok-sim Kim is pure and innocent. She has an ingenuous country voice. It is a kind of hope that provides our mental strength. Mental power is as important to our health as a eating right. Jeongseon Arirang sung by Ok-sim Kim is Seoul style of rhythmic pattern and melody. Jeongseon Arirang is designated as the Intangible Cultural Property No. 1 by the Gangwon province in 1971. This article outlines the emotional biography of Jeongseon Arirang of Ok-sim Kim relationship.

• 대한인간공학회지
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• 제16권1호
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• pp.73-83
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• 1997

It is improtant to get accurate information about the grip strength for designing ergonomic grips and handles. It has been known that the excessive and repetitive use of grip force and unnatural posture of the wrist may cause cumulative trauma disorders (CTDs) such as carpal tunnel syndrome, tendrome, tendonitis, DeQuervan's disease, etc. In this paper we have measured the grip strength for sitting and standing posture for Korean adults ; 114 males and 105 females aged from the 20's to above the 50's. And this paper performed statistical analysis for deriving characteristics between grip strength and anthropometric data. The results are as follows ; (1) The maximum grip strength posture is exerted under standing posture with the elbow in full extension (180 .deg. ) for both males and females (2) There is significant difference among posture, sex and right and/or left handedness (3) Grip strength decreases with age for male, but it traces an inverted U curve for female (4) Grip strength has corre- lations with the age, weight, height, BSA, forearm length, hand length, thickness of wrist, circumference of wrist, and breadth of wrist for males.

• International Journal of Reliability and Applications
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• 제13권2호
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• pp.91-104
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• 2012

Sarhan and Kundu (2009) introduced a new distribution named as the generalized linear failure rate distribution. This distribution generalizes several well known distributions. The probability density function of the generalized linear failure rate distribution can be right skewed or unimodal and its hazard function can be increasing, decreasing or bathtub shaped. This distribution can be used quite effectively to analyze lifetime data in place of linear failure rate, generalized exponential and generalized Rayleigh distributions. In this paper, we apply the simulated annealing algorithm to obtain the maximum likelihood point estimates of the parameters of the generalized linear failure rate distribution. Simulated annealing algorithm can not only find the global optimum; it is also less likely to fail because it is a very robust algorithm. The estimators obtained using simulated annealing algorithm have been compared with the corresponding traditional maximum likelihood estimators for their risks.

• The Korean Journal of Physiology
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• 제28권2호
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• pp.191-196
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• 1994

Captopril, an inhibitor of angiotensin converting enzyme, is also known to inhibit the degradation of bradykinin. We examined the effects of intracerebroventricular (ICV) captopril on the central pressor response to bradykinin in normotensive, 2-kidney, 1 clip Goldblatt (GHR) and deoxycorticosterone acetate (DOCA)-salt hypertensive rats. Captopril (1 mg) and bradykinin (5 nmol) were administered into the right lateral cerebral ventricle, and blood pressure and heart rate were continuously monitored throughout the experiment. ICV captopril alone did not affect the blood pressure within 10 minutes but it significantly augmented the central pressor response to bradykinin in GHR. On the contrary, captopril was without effect on the pressor response to bradykinin in normotensive and DOCA-salt rats. These findings indicate that endogenous kinins are not critical in regulating arterial pressure in normotensive and DOCA hypertensive rats. However, in GHR, an enhanced activity of the brain kallikrein-kinin system in maintaining the high blood pressure is suggested.

• Journal of Chest Surgery
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• 제41권5호
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• pp.655-658
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• 2008

쇄골하 동맥류는 매우 드문 질환으로 전체 말초혈관동맥류의 약 1%로 알려져 있다. 원인은 동맥경화증이 가장 흔하며 파열, 혈전 및 색전증, 국소적 압박 등을 야기할 수 있다. 치료는 외과적 수술이 일반적이다. 저자들은 우측 쇄골하 동맥의 근위부에 발생한 동맥류를 배제법으로 수술하여 좋은 결과를 얻었기에 보고하는 바이다.

• 한국수학사학회지
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• 제27권1호
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• pp.13-30
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• 2014

The book ${\ll}$Ceyuan Haijing${\gg}$ studies inscribed and circumscribed circles in a right triangle and shows equations that give the diameters of the circles. We discuss the development of mathematical contents written by the scholar Yang Zhaoyun in Qing dynasty on the contents of ${\ll}$Ceyuan Haijing${\gg}$ in his book ${\ll}$Jiuyong Yandai${\gg}$. He derived equations to find the diameters of the circles based on algebraic knowledge known in the Qing dynasty. In this paper, we conclude that Yang's methods in devising the equations include the Gou-Gu Theorem, mathematical expressions derived from Gou-Gu ratio table, and the technique of interchanging triangles and events. We conclude that the Gou-Gu ratio table was a very important tool when Yang devised the equations in ${\ll}$Ceyuan Haijing${\gg}$.

• Journal of Korean Neurosurgical Society
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• 제53권1호
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• pp.59-61
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• 2013

Authors report a rare case of acute intracranial subdural and intraventricular hemorrhage that were caused by intracranial hypotension resulted from cerebrospinal fluid leakage through an unidentified dural tear site during spinal surgery. The initial brain computed tomography image showed acute hemorrhages combined with preexisting asymptomatic chronic subdural hemorrhage. One burr hole was made over the right parietal skull to drain intracranial hemorrhages and subsequent drainage of cerebrospinal fluid induced by closure of the durotomy site. Among various methods to treat cerebrospinal fluid leakage through unidentified dural injury site, primary repair and spinal subarachnoid drainage are well known treatment options. The brain imaging study to diagnose intracranial hemorrhage should be taken before selecting the treatment method, especially for spinal subarachnoid drainage. Similar mechanism to its spinal counterpart, cranial cerebrospinal fluid drainage has not been mentioned in previous article and could be another treatment option to seal off an unidentified dural tear in particular case of drainage of intracranial hemorrhage is needed.

• 대한간호학회지
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• 제35권5호
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• pp.914-923
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• 2005

Purpose: Although feminism has been actively discussed and applied to nursing in Western societies since the 1980s, it is little known among Korean scholars as well as Korean nurses. This article explores the use of feminist perspectives in nursing science in other developed countries and suggests how feminism could be applied to nursing science in Korea. Method: The literature related to nursing and feminism were reviewed in terms of nursing practice, education, and research. Result: This article describes what feminism is and how feminism and nursing have evolved historically over time in other countries, especially in Western societies. In addition, it discusses how it can be applied to nursing practice, education, and research in Korea. Conclusion: Accepting feminist perspective in Korean nursing could benefit in empowering nurses by valuing nursing, by raising self-esteem of nurses, and by raising the consciousness of socio-political realities. Eventually it could benefit in changing and developing nursing science in Korea.

• 대한의료기공학회지
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• 제14권1호
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• pp.63-82
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• 2014

This study is aimed to verify effects of Walking in treating hospitalized patients with low back pain in the Korean medicine hospital. The method of this study is choosing patients whose chief complaints were low back pain in the Korean medicine hospital in Gyeonggi Province. People who agreed to take Walking treatment were classified into experimental group and control group. Both experimental group and control group were treated with Korean medicine. In addition, experimental group performed Walking program more often. Changes of temperature difference taken by digital infrared thermal imaging(DITI) were used as measuring tools. The summary of this study's result is as in the following. There was significant difference in the experimental group which performed Walking treatments but not in the control group resulting from examining the change of temperature difference between left and right Yongchon. As known from the results above, Walking program is meaningful in curing the low back pain.