Iobulomaxillary Cyst의 1례

김지우,최홍식,정영석,박영년 대한이비인후과학회 1990 대한이비인후과학회지 두경부외과학 Vol.33 No.2

유아 운동능력에 따른 군집유형: 연령과 BMI에 따른 비교분석

김지우,전선혜 중앙대학교 학교체육연구소 2023 Asian Journal of Physical Education of Sport Scien Vol.11 No.1

This study was to find out the characteristics of the motor abilities of children aged 3-5 years by measuring their motor abilities and performing a cluster analysis on their motor abilities. The subjects of the study were 1,212 children from all over the country, and the children's motor ability measurement tool developed by the Korea Sports Association was used. For data analysis, a hierarchical two-step cluster analysis was performed by inputting the standard scores of six variables. As a result of the analysis, in the analysis of all age groups, the clusters in which all motor ability elements developed evenly appeared the most. However, as a result of analyzing them by age, a contrasting profile was found for each group according to age. In addition, as a result of cluster analysis according to BMI, it was found that the group with a low BMI had excellent exercise capacity. As a result of the study, it can be seen that the majority of infants develop sequentially according to age, and show contrasting profiles according to age. In addition, exercise capacity was different depending on the degree of obesity. In conclusion, it is necessary to present a customized physical activity program according to the characteristics of motor ability in order to achieve balanced motor skill development in children. 본 연구는 만 3-5세 유아들을 대상으로 운동능력을 측정하고 그들의 운동능력을 군집분석하여 봄으로써 유아들의 연령별 운동능력의 특성을 알아보고자 하는 데 목적이 있다. 연구대상은 전국의 유아 1,212명이었으며, 대한체육회에서 개발한 유아운동능력 측정 도구를 사용하였다. 자료분석은 6가지 변인들의 표준점수를 투입하여 위계적 2단계 군집분석을 실시하였다. 분석 결과 전체연령을 대상으로 한 분석에서는 모든 운동능력 요소들이 골고루 발달하는 형태의 군집이 가장 많이 나타났다. 그러나 이를 연령별로 분석하여 본 결과 연령에 따라 군집 별로 대조적인 프로파일을 보였다. 또한 BMI에 따른 군집분석을 한 결과 BMI가 낮은 그룹이 운동능력이 우수한 것으로 나타났다. 연구 결과 유아들 대다수는 연령에 따라 순차적으로 발달이 이루어지고 있으며, 연령에 따라서는 대조적인 프로파일을 보임을 알 수 있다. 또한 운동능력은 비만도에 따라 다르게 나타났다. 결론적으로 유아들이 균형 있는 운동능력 발달을 이루게 하기 위해서는 운동능력 특성에 따라 맞춤형 신체활동 프로그램을 제시할 필요가 있다.

카본입자를 이용한 분산액의 전기유변학적 거동

김지우,윤성호,최형진 한국공업화학회 1998 응용화학 Vol.2 No.2

Electrorheological behavior of suspensions using three different carbonaceous particles was observed from various characterization methods. These different carbonaceous particle possess different oxygen content and were prepared by thermal treatment. All were from mesophase pitch which were cationic polymerized with naphthalene and HF/BF₃ under high temperature (500∼700℃). Special attention was put on different variables effecting on ER properties such as current density, temperature, electric field and weight fraction. We also measured the change of shear stress and shear viscosity from 20℃ to 100℃ to observe the durability of carbonaceous ER fluid.

대표인 개념 도입에 따른 확률론적 선량평가 시 국내 원자력발전소 주변일반인 섭취선량 변화 분석

김지우,진용호,곽민우,김혁재,김광표 (사)한국방사선산업학회 2022 방사선산업학회지 Vol.16 No.4

The International Commission on Radiological Protection recommended the representativeperson concept and the newly proposed probabilistic dose assessment methodology. As a probabilisticmethodology is newly proposed, it is necessary to analyze the tendency of change in dose when applyingthe methodology. Existing dose assessment experience showed that over 90% of the dose was dueto food ingestion during normal operation of nuclear power facilities, and therefore, the tendency ofchange in dose can be judged through the ingestion dose assessment. In this study, probabilistic doseassessment was performed on a trial basis for the ingestion exposure pathways. Then, the values werecompared with the deterministic dose assessment results to analyze the change trends of dose. Factorssuch as source term, exposure pathway, atmospheric dispersion factor, and intake were considered inthe dose assessment. A single APR-1400 unit was assumed as the source term. The exposure pathwayswere selected based on the model specified in the domestic regulatory guidelines. The atmosphericdispersion factor was assessed using the XOQDOQ code for the actual agricultural production area. For intake, domestic data was analyzed based on raw data from the National Health and NutritionExamination Survey. Probabilistic dose assessment was performed by applying the Monte Carlomethodology to the analyzed intake distribution. As a result of the probabilistic dose assessment, theingestion dose was 5.56×10-3 mSv y-1, which was 2.3% smaller than the deterministic dose assessmentresult. These differences appeared mainly for the younger age groups and the exposure pathways relatedto liquid effluents and were judged to be due to the small number of samples and wide variation in intakedistribution. It is judged that it is necessary to systematize the distribution data of variables such as intakefor more accurate probabilistic dose assessment in the future. The results of this study can be used asbasic data when introducing the representative person concept in Korea in the future.

열두 살 나무의 집

김지우 문학과경계사 2002 문학과경계 Vol.2 No.2

근대 사회와 그 속의 자신을 진단하는 지식인-「AU MAGASIN DE NOUVEAUTES」를 중심으로

김지우,이수정 한국시학회 2019 한국시학연구 Vol.- No.57

Yi-Sang revealed in his first series of poems titled “Architectonic Infinite Cube” that he would pursue a new form of literature that deviates from the stereotypical framework of traditional literature. “AU MAGASIN DE NOUVEAUTES” was written in a way that is no longer unique in the form of Yi-Sang's unique iterations, language entertainment, metaphor, and core vocabulary, etc. Throughout the poem, he describes the modern society he wants to criticize, including consumption without production, imitation modern, capitalism, war(Mukden Incident), and ideological control. And he revealed his own self-image in such a society. He also revealed internal conflicts between his desire to protest against the pressure of society and his desire to comply. 이상은 자신의 첫 필명 연작시 「건축무한육면각체」의 제목을 통해 기존 문학의 정형화된 틀에서 벗어나 새로운 형식과 내용의 문학을 추구할 것을 표방하였다. 연작의 첫 번째 시「AU MAGASIN DE NOUVEAUTES」는 이상 특유의 반복, 언어유희, 비유, 핵심어 나열 등의 방법으로 쓰여졌으며, 생산 없는 소비, 모조 근대, 자본주의, 전쟁(만주사변), 사상통제 등 식민지 근대 조선의 다양한 현실을 비판하였다. 그리고 그 속에서 살아가는 자신을 진단하면서, 사회의 압력에 반발하고 싶은 마음과 순응하고 싶은 마음의 내적 갈등을 표출하였다.

[공공철학] 제대군인 가산점제도를 통해 본 젠더 갈등과 공공성

김지우 한국자치학회 2021 월간 공공정책 Vol.189 No.-

Disguise Motive in Shakespeare's Comedies

金志友 한국현대영어영문학회 1981 현대영어영문학 Vol.19 No.1

열수처리 용액의 조성이 티타늄 상에 수산화인회석 나노막대 형성에 미치는 영향

김지우,조준영,한옥성,송호준,박영준 대한치과재료학회 2009 대한치과재료학회지 Vol.36 No.special

철 입자를 이용한 자기 유변 유체의 특성 및 그 응용(인체 보호의)에 관한 연구

김지우,정호근 한국현장과학교육학회 2009 현장과학교육 Vol.3 No.2

In this study, we investigated magnetorheological (MR) fluid, which changes its mechanical properties under magnetic field, and its shock absorption effect. We also investigated a possibility of a practical application by making body-protective cloth. The MR fluid is one of smart materials, which consists of magnetizable particle and suspending non-magnetic medium. MR fluids show liquid-like behaviors without magnetic fields while it changes to solid-like materials under magnetic field. It is due to the alignment of suspended particle to the direction of magnetic field. We fabricated the MR fluids by suspending iron particles into soybean oil at the fixed rate. Also, the macroscopic and microscopic changes of the product fluid was observed using a digital carmmera and an optical microscope, respectively. The change of mechanical properties was also investigated. The shock absorption effect of MR fluids was studied using vacuum- packed MR fluids. This study shows a possibility of producing the protection cloth by means of the shock absorption effect of MR fluids. Manufactured protection cloth will hold a great significance in terms of life-saving by shielding people's breast part and backbone of the body from damage caused by accidents which often occur in construction or else. 본 연구는 자기 유변 유체의 특성을 연구하고 충격 흡수 효과에 대한 실험을 바탕으로 인체 보호의를 제작하여 그 응용 가능성을 탐구하였다. 자기유변 유체는 일반적으로 자성을 띌 수 있는 입자가 비자성 유체에 분산되어 있는 분산액으로 자기장이 없을 때는 유체와 같은 성질을 가지다가, 자기장이 주어지면 입자가 자기장의 방향으로 배향하면서 고체와 같은 성질을 지니는 스마트 물질이다. 본 연구에서는 일정한 비율로 철 입자를 기름에 분산시킨 자기 유변 유체를 제조하였다. 먼저 자기장의 유무에 따라 제조된 자기 유변 유체가 변하는 것을 광학 현미경으로 관찰하였다. 그리고 자기 유변유체의 점탄성 성질의 변화를 측정하였으며, 그것을 플라스틱 팩에 넣어 충격 흡수에 관한 실험을 진행하였다. 자기 유변 유체의 충격 흡수에 대한 실험을 통하여 이를 보호의 제작에 응용하고자 하였다. 제작된 보호의는 각종 사고나 재해로부터 인체의 흉부와 척추를 보호하여 인간의 생명을 구하는 보호 장구로서의 중요한 기능을 담당할 수 있다