보행 시 노인의 상체 움직임에 대한 3차원적 분석

김희수,윤희중,류지선,김태삼 한국운동역학회 2004 한국운동역학회지 Vol.14 No.3

H. S. KIM, H. J. YOON, J. S. RYU, T. S. KIM. The Three Dimensional Analysis of the Upper Body's Segments of the Elderly during Walking. Korean Journal of Sport Biomechanics, Vol. 14, No. 3, pp. 1-15, 2004. The purpose of this study was to investigate the kinematic variables of the upper part of the body for 8 elderly men during walking. For this study, kinematic data were collected using a six-camera (240Hz) Qualisys ProReflex system. The room coordinate system was right-handed and fixed in space, with righted orthogonal segment coordinate systems defined for the head, trunk, and pelvis. Based on a rigid body model, reflective marker triads were attached on the 3 segments. Three-dimensional Cartesian coordinates for each marker were determined at the time of recording using a nonlinear transformation(NLT) technique with ProReflex software (Qualisys, Inc.). Coordinate data were low-pass filtered using a fourth-order Butterworth with cutoff frequency of 6Hz. Three-dimensional angles of the head, trunk, and pelvis segment were determined using a Cardan method. On the basis of each segment angle, angle-angle plot used to estimated the movement coordinations between segments. The conclusions were as follows; (1) During the support phase of walking, the elderly people generally kept their head the flexional and abductional posture. Particularly, the elderly displayed little internal/external rotation. (2) The elderly people showed extensional and external rotation postures in the trunk movement. Particularly, It showed the change from adduction into abduction at the heel contact event of the stance phase. (3) The elderly people showed almost same pelvis movement from the flexion into extension, from the abduction into adduction, and from internal rotation into external rotation at the mid stance and toe off of the stance phase.

치상 돌기 골절의 전방 경유 나사못 고정술 치료 성적

김인영,김수한,이정길,김태선,김재휴,이제혁,강삼석 대한신경외과학회 1997 Journal of Korean neurosurgical society Vol.26 No.9

혈관모세포종의 임상 분석

김은성,강삼석,이정길,김태선,정신,김재휴,김수한,이제혁 대한신경외과학회 1998 Journal of Korean neurosurgical society Vol.27 No.1

혈관모세포종의 임상 분석

김은성,강삼석,이정길,김태선,정신,김재휴,김수한,이제혁 대한신경외과학회 1998 Journal of Korean neurosurgical society Vol.27 No.5

Korean English Teacher's Disempowerment in English-only Classes

Sung-Sam Hwang,Hyo-Sun Seo,Tae-Young Kim 한국사회언어학회 2010 사회언어학 Vol.18 No.1

Hwang, Sung-Sam, SeD, Hyo-Sun, Kim, Tae-Young. 2010. Korean English Teacher's Disempowerment in English-only Classes: A Case Study Focusing on Korea-specific Cultural Aspects. The Sociolinguistic journal of Korea 18(1). In this case study, we have focused on the disempowerment of a Korean English teacher (KET) in English-only classrooms. Six English as a foreign language (EFL) classrooms in a Korean high school were observed and analyzed by using interpretive discourse analysis. Out of the six classes, three representative classrooms were both video- and audio-taped. The results show that the English-only classes could weaken the KETs' power via three mechanisms: (a) calling the KETs' last name for choral greetings at the beginning of the class, (b) students' group solidarity and peer pressure between classmates, and (c) the students' excessively collaborative approach to peer assistance. It is argued that the exclusive English-only instruction disempowers the KETs' status and dismantles their vocational identity. In order to remedy the current situation, within a scaffolding supported by the eclectic use of first language where necessary for effective class management, KETs are empowered and overcome constraints imposed by the limited L2 oral competence of some non-native English teachers.

사업장(事業場) 근로자(勤勞者)의 사상체질(四象體質)에 따른 생활습관(生活習慣), 자각증상(自覺症狀), 건강인식(健康認識)에 관(關)한 연구(硏究)

서명효,강홍구,장두섭,왕명자,차남현,김삼태,권소희,정해경,송용선,이기남,Seo Muoung-Hoy,Kang Hong-Goo,Jahng Doo-Sub,Wang Myoung-Ja,Cha Nam-Hyun,Kim Sam-Tae,Kwon So-Hee,Jung Hae-Kyoung,Song Yung-Sun,Lee Ki-Nam 대한예방한의학회 2003 대한예방한의학회지 Vol.7 No.2

The study was conducted to evaluate the difference of life style, subjective symptoms and health cognition depending on the Sasang Constitution in the industrial workers. The results were as follows ; Constitutional distribution among exposed group were Tae-eum In(38.4%), So-eum In(35.2%), and So-yang In(26.4%) and it was turned out that Tae-eum In took a higher portion of Sasang constitution than other constitutions in technician workers. 'Exercise' and 'Obesity' were found most in Tae-eum In, In So-eum In there were many 'Normal' weight and 'Having digestive disorders' were found most in So-eum In. There were no significant difference in the health cognition among the constitutions. The closer to 'normal' weight, the higher prevalence in 'having' concern about health condition and the more 'normal' condition in sleeping, the higher prevalence of 'having' self-confident in present health.

JPEG 양자화계수에 따른 기밀 데이터의 합성법

김삼룡,박태진 慶南專門大學 1997 論文集 Vol.25 No.1

가상기억장치에서 페이지 선반입의 영향

金태延,張惠眞,盧三赫 弘益大學校 科學技術硏究所 1999 科學技術硏究論文集 Vol.10 No.1

In this paper, we present a study of the effect of prefetching of pages in the virtual memory subsystem of the operating system. As disk accesses are increasingly becoming a bottleneck of a computer system it is essential that this bottleneck be alleviated. Prefetching of pages in one such approach. Using an algorithm proposed for buffer caching, we modify the virtual memory subsystem of the FreeBSD operating system kernel so that prefetching may be achieved in an effective manner. To validate the effect of prefetching we run experiments using the original operating system and the modified operating system. The experiments are conducted using matrix calculations and by running a I/O intensive benchmark. Results show that the modified kernel provides more efficient execution in terms of actually reducing the number of page faults as well as the real execution time. However, the experiments also show that the bookkeeping overhead induced by the modification increases the system overhead slightly.

濟州地域開發의 投資配分 및 調達方案

金泰保,吳南三 제주대학교 1992 논문집 Vol.34 No.1

SummaryThe Study is the attempt to seach for the investment allocation criteria and the fund mobilization measures with regard to the effective implementation of the Cheju Derelopment Plan. Previously the Cheju Development Plan presented the investment amount and the fund mobilization measures only for a certain sector thereby lacking not only the systemetic approach for the effective funding but the investment allocation to guarrantee the feasibility of the plan. This study focuses on the analysis of the investment alloction and the available fund for the Cheju Development Plan and campares the planned amounts with the invested amounts by major sectors. The Study is the attempt to seach for the investment allocation criteria and the fund mobiliration measures with regard to the effertive imlementation of the Cheju Derelopment. Previously the Cheju Development Plan presented the investment amount and the fund mobilization measures only for a certain sector thereby lacking not only the systemetic approach for the effective funding but the investment allocation to guarrantee the feasibility of the plan. This study focuses on the analysis of the investment alloction and the available fund for the Cheju Development Plan and campares the planned amounts with the invested amounts by major sectors.

치수 치근단 병소의 전구 위험요인으로서의 제 2 형 당뇨의 역할에 관한 소고

김진희,배광식,서덕규,홍성태,이윤,홍삼표,금기연 大韓齒科保存學會 2009 Restorative Dentistry & Endodontics Vol.34 No.3

Diabetes Mellitus (DM) is a syndrome accompanied with the abnormal secretion or function of insulin, a hormone that plays a vital role in controlling the blood glucose level (BGL). Type 1 and 2 DM are most common form and the prevalence of the latter is recently increasing. The aim of this article was to assess whet her Type 2 DM could act as a predisposing risk factor on the pulpo-periapical pathogenesis. Previous literature on the pathologic changes of blood vessels in DM was thoroughly reviewed. Furthermore, a histopathologic analysis of artificially-induced periapical specimens obtained from Type 2 diabetic and DM-resistant rats was compared. Histopathologic results demonstrate that the size of periapical bone destruction was larger and the degree of pulpal inflammation was more severe in diabetic rats, indicating that Type 2 DM itself can be a predisposing risk factor that makes the host more susceptible to pulpal infection. The possible reasons may be that in diabetic state the lumen of pulpal blood vessels are thickened by atheromatous deposits, and microcirculation is hindered. The function of polymorphonuclear leukocyte is also impaired and the migration of immune cells is blocked. leading to increased chance of pulpal infection. Also, lack of collateral circulation of pulpal blood vessels makes the pulp more susceptible to infection. These decrease the regeneration capacity of pulpal cells or tissues, delaying the healing process. Therefore, when restorative treatment is needed in Type 2 DM patients, dentists should minimize irritation to the pulpal tissue under control of BGL. 당뇨(Diabetes Mellitus)란 혈당을 조절하는 인슐린의 분비나 기능에 장애를 야기하는 질환으로 인슐린 의존성 여부에 따라 제 1 형과 제 2 형으로 분류된다. 본 종설은 최근 증가 추세에 있는 제 2 형 당뇨가 치수 치근단 병소의 병인 과정에 전구 위험 요인으로 작용할 수 있는지를 평가 하고자 문헌고찰을 통해 당뇨의 병인 과정에서 특징적으로 나타나는 혈관 합병증에 관해 알아보고, 부가적으로 제 2 형 당뇨 쥐 모델에서 인위적인 치수감염 후 얻은 치근단 조직의 조직병리학적 분석을 시행하였다. 조직학적 관찰 결과 제 2 형 당뇨 쥐에서 대조군에 비해 치수 치근단 병소의 크기가 증가하였고, 치수 염증 반응도 심하게 나타난 것으로 보아 당뇨 자체가 숙주를 감염에 취약한 상태로 만드는 전구 위험요소로 작용하였음을 알 수 있었다. 이러한 이유로는 첫째, 당뇨 시 전반적으로 나타나는 혈관 내 죽상 침착(atheromatous deposits)에 의해 혈관 내벽의 두께가 두꺼워져 미세 순환의 장애는 물론 탐식 세포의 기능 저하, 면역 세포의 혈류 이동이 차단되어 치수 감염 시 쉽게 치근단 병소로 이환될 가능성이 높고, 둘째 치수 혈관에서 특징인 측부 순환(collateral circulation)의 부재에 따른 살균성 다형핵 백혈구의 활동 억제를 포함한 미세 혈관계의 취약성으로 인해 치수 조직의 재생능이 저하되어 추가적인 감염원의 공격에 대한 방어 및 치유 저하를 더욱 심화시키기 때문인 것으로 사료된다. 따라서 제 2 형 당뇨 환자의 수복치료 시 치과의사는 당뇨 조절 하에서 치수 조직의 자극을 최소화하기 위한 세심한 처치가 필요하다.