초등학교 학교교과목 개발 절차 연구

이현근 ( Lee Hyun-geun ),박승배 ( Park Seungbae ) 한국초등교육학회 2022 초등교육연구 Vol.35 No.4

The purpose of this study is to devise and present procedures that teachers can use usefully when developing school subjects. The research method was educational criticism. The study participants were 6 elementary school teachers who had experience in developing teacher curriculum or school subjects. The seven stages of general-purpose school subject development identified in this study are as follows. The first step is to thoroughly research the topic content of the school subject to be developed. The second stage is the stage of setting achievement standards to be presented as normative. The third step is to create a content system table. The fourth step is to fill out the content system table. The fifth step is to create activity materials. The sixth step is to temporarily apply and receive feedback. The seventh step is to finalize the final draft by reflecting the feedback. The seven stages of school subject development developed by the participants of this study are very simple and intuitive, so it is evaluated to be an excellent beacon to guide the development process to teachers interested in school subject development.

주민참여 중심의 지역문화 활성화를 위한 창작스튜디오에 관한 연구

이현근(Lee, Hyun-Geun),윤은경(Yun, Yean-Kyung) 한국실내디자인학회 2015 한국실내디자인학회 학술대회논문집 Vol.2015 No.10

The structural changes in modern society and rise in income level have changed the lives of people and increased their participation in art. Such participation leads to creative and emotional expression activities. The activities can solve the issues of modern society such as the following: weakening communities; disconnected communication; personalization; alienation; anxiety. Thus resident participation in art can enhance the lives of society members, their ties, and collective welfare. This study had identified the status of creative studios, along with their issues, and presents solutions. The aim is to suggest a new type of creative studio for stimulating community culture with its own identity. The studio inspires autonomous participation and communication of local residents.

정지비행을 위한 날갯짓 비행체 제작

정한교(Han-Kyo Jung),이현근(Hyun-Geun Lee),박경진(Gyung-Jin Park) 대한기계학회 2015 대한기계학회 춘추학술대회 Vol.2015 No.11

Numerous researchers are actively studying the design and the fabrication of the flapping wing air vehicles (FWAV). The FWAVs are a class of unmanned aerial vehicles (UAVs). Most of the FWAVs were designed to mimic nature. The FWAV is designed for various purposes such as exploration, rescue and reconnaissance, and the vehicle is fabricated to meet the purposes. The FWAVs are fabricated for a forward flight and a hovering flight according to the flight direction. The forward flight vehicle is conventional and the fabrication method of the vehicle has been continuously studied. The hovering flight is essential for an advanced FWAV that is capable of a variety of flights. The hovering flight vehicle is difficult to fabricate due to the complicated mechanism for rapid flapping frequency and its weight. In order to manufacture the hovering flapping wing air vehicle (HFWAV), the mechanisms including a gear box are proposed and fabricated. The vehicle can hover as it is experimentally demonstrated. As a result, the fabrication direction for the HFWAV is suggested.

라운드 형태 건물의 모델링 방법론에 관한 연구

김헌중(Kim Heon-Joong),이현근(Lee Hyun-Geun),최원기(Choi Won-Ki),서승직(Suh Seung-Jik) 한국태양에너지학회 2006 한국태양에너지학회 학술대회논문집 Vol.- No.-

This study is for introducing a method by which we could gain proper results from the simulation tools economically, specially in modelling the rounded shape of building. For calculating the effect of the method, we assumed a model of half-round shape, then defined a reference model divided in 10°, a central angle, for evaluating the relative thermal performance. As results, it is necessary to divide the central angle at least as 20° for accuracy, but in case of horizontal division of the round body it is necessary to divide the area into more than 3 sections. Consequently, we could model the building for simulation more easily and economically by dividing the shape body of model as horizontal division, with accuracy as well.

인천대교 현장 재하시험을 통한 기초 설계 및 시공 사례

김정환(Kim Jeong Hwan),이현근(Lee Hyun Gun),신현양(Shin Hyun Yang),윤만근(Yoon Man Geun) 대한토목학회 2005 대한토목학회 학술대회 Vol.2005 No.10

화학기상법을 이용한 UHTCs 및 SiC<SUB>f</SUB>/SiC 복합체 제조

김대종(Daejong Kim),한장원(Jangweon Han),이현근(Hyun-Geun Lee),박지연(Ji Yeon Park),김원주(Weon-Ju Kim) 한국추진공학회 2018 한국추진공학회 학술대회논문집 Vol.2018 No.5

골반 단순 전후방 검사에서 내회전 20°를 위한 보조기구의 유용성

백민구(Baek Min Gu),고주영(Ko Ju Young),이현근(Lee Hyun Geun),이재석(Lee Jae Seok),임성훈(Im Seong Hun),유대준(Yu Dae Jun),김대현(Kim Dae Hyun) 대한영상의학기술학회 2014 대한영상의학기술학회 논문지 Vol.2014 No.1

목 적 : 고관절의 통증을 주소로 내원하는 환자에게 일차적으로 시행되어지는 방사선학적 검사 중 기본적으로 검사하는 골반 단순 전후방 촬영(Pelvis AP)에서 고관절을 20° 내회전시켜 고정시킬 수 있는 보조기구를 사용하여 검사한 영상을 비교하여 그 유용성을 알아보고자 하였다. 대상 및 방법 : 2012년 7월부터 2013년 10월 까지 고관절 통증으로 본원에 내원하여 기본적으로 촬영하게 되는 골반 단순 전후방검사(Pelvis AP)을 추적 검사한 성인남녀 35명을 대상으로 하였고, 연령군은 남성 17명, 여성 18명 이었으며 총 평균 나이는 47.1세 이었다. 영상분석은 동일한 환자군을 대상으로 보조기구를 사용하기 전과 사용 후의 Femoral offset 측정은 정형외과전문의 1명과 방사선사 1명이 측정 하였고, 소전자의 대칭성, 미골과 치골결합의 일치성, 장골능의 대칭성에 대 한 3가지 질문에 대한 평가는 정형외과파트 방사선사 5명이 리커트 5점 척도로 실시하였다. Femoral offset은 SPSS 20.0 통계프로그램으로 평가자간의 신뢰도인 피어슨 상관분석과 Cronbach의 알파분석을 사용 하였고, 보조기구 사용 전, 후의 차이를 알아 보기위해 대응표본 T검정을 실시하였다. 설문지 평가는 평가자간의 신뢰도를 알아보는 스피어만 상관분석과 Fisher의 정확한 검정으로 p〈 .05를 유의한 차이로 분석을 하였다. 결 과 : Femoral offset의 평균값은 보조기구사용 전에는 41.74(±.86)mm이고 사용 후에는 43.37(±.96)mm로 사용 전, 후의 평균값 간에는 통계적인 유의한 차이가 있었다(p=.001). 보조기구의 사용여부에 따른 영상기준 평가 3가지(A, B, C) 질문에서 5점을 받은 빈도가 유의한 차이가 있는 것으로 나타났다(P=.000). 보조기구를 사용하기 전 경우에 설문 5점을 받은 경우가 12.4%(13명)이고, 보조기를 사용한 후에 설문 5점을 받은 경우가 46.7%(49명)으로 높게 나타났다. 결 론 : 골반 단순 전후방 검사(Pelvis AP)에서 보조기구의 사용은 고관절 통증으로 환자들의 자세 불안정에 따른 재검사와 검사 보조자에게 불필요한 피폭을 감소시키는데 도움을 주었고, 환자에게 심리적인 안정과 신뢰감을 주었으며 진료과에는 정확한 자세의 검사영상을 전달함으로써 상호보완적인 시스템이 구축되어 보다 더 양질의 의료서비스 제공에 많은 도움이 될 것으로 사료 된다. Purpose : We sought to find the usefulness of Pelvis Anterior-Posterior (AP) which is a basic test among primary radiology tests performed on the patients who visit the hospital with pain in their hip joints by using an assistive device that can fixate hip joint 20° internally rotated. Materials and Methods : The subjects were 35 patients who had follow-up with Pelvis AP which is a basic test done when patients come in with pain in their hip joints from July, 2012 to September, 2013. Their age group was comprised of 17 male and 18 female, overall mean age was 47.1. Femoral offset is analyzed by orthopedic surgeon 1, radiologic technologist 1, and 3 questions (A, B, C) are analyzed on lickertis 5 scale by orthopedic radiologic technologist 5. Femoral offset is evaluated by the SPSS 20.0 to learn the reliability between evaluators from the Pearson correlation and Cronbach s ㅁ analysis. The difference between before and after using the deivce is verified by Paired T test. To learn the reliability between evaluators in question assessment, Spearman correlation analysis and Fisher s exact test are analyzed by p 〈.05 significant difference. Result : There was statistically significant difference between the average values of femoral offset before and after using the device (p=.001). Before use, it was 41.74 (±.86)mm, and 43.37(±.96)mm after use. In the 3 questions (A, B, C) in the evaluation of image standards based on the use of device, frequency of answering 5 in the survey appeared to have significant difference (P=.000). The frequency of answering 5 in the survey was 12.4% (13 patients) before using the device and was 46.7% (49 patients) after the usage, which is higher than the former. Conclusion : The assistive device did indeed help to decrease the incidence of retest due to the instable patients and unnecessary exposure of test assistants to radiation. The usage of assistive device provided emotional stability and sense of trust to the patients and test images of more precise position to the diagnosis department.

무릎 연골연화증의 영상진단에서 압박 촬영의 유용성

원광년(Kwang-Nyeon Won),고주영(Ju-Young Ko),박재연(Jae Yeon Pak):이현근(Hyun-Geun Lee),조영기(Young-Ki Cho) 대한영상의학기술학회 2012 대한영상의학기술학회 논문지 Vol.2012 No.-

목적: 무릎 통증 환자에 동반되는 무릎 연골연화증의 정확한 진단에 있어 확연히 드러난 골절이나 인대손상이 아닌 환자의 검사 시 기존의 검사 방법과 압박검사방법을 병행하여 검사할 경우 무릎뼈의 위치 변위 및 관절 상태를 진단함에 있어 무릎관절에 혈압계로 압박을 가하고 검사했을 때의 유용성을 알아보고자 하였다. 대상 및 방법: 무릎통증을 주소로 내원한 연골연화증 환자군 20명과, 정상 대조군 20명을 테이블에 엎드린 후 대퇴부와 하퇴부의 각도를 90°로 하고 x선관은 머리쪽으로 25° 위치한후 검사하는 무릎뼈 접선방향 검사 방법과, 동일한 자세에서 무릎관절 검사부위에 혈압계의 덮개를 위치한 후 압력을 150mmHg 가하고 검사한 압박무릎뼈 접선방향 검사방법을 비교 하여, 검사한 두 영상의 압박 전후 무릎뼈 위치 변위 및 관절면의 상태를 비교평가 하였다. 결과: 무릎연골연화증 환자군과 대조군에서 압박을 가하지 않고 검사할 경우에는 무릎뼈 뒤쪽인대의 변위인 연골연화증의 질환유무를 유추해내기 어려웠다. 그러나 압박을 가하고 검사한 환자군을 비교한 영상에서는 압박 전후에 대퇴슬개관절의 거리변화가 환자군 20명 모두에서 3mm 가량의 현저한 차이를 확인할 수 있는 반면, 정상 대조군의 경우는 압박 전후에 무릎뼈의 거리변화가 1mm가량 인원만 관찰되었다. 거리변화 대응표본 T-test를 압박전과 압박후로 나누어 실시해 본 결과 T-test 31.17 (p<0.05)로 압박 후 검사방법이 T-test 1 (p<0.05)이상으로 무릎의 연골연화증환자 검사 시 압박촬영이 무릎뼈 변위의 위치변화에 있어 유의한 것으로 나타났다. 결론: 무릎통증을 주소로 내원한 환자에서 확연히 드러난 골절이나 인대손상이 아닌 환자군 에서 기존의 검사방법과 병행하여 혈압계를 이용한 압박검사를 시행한다면 고가의 의료장비나 침습적인 검사를 하기 앞서, 일반 영상검사에서도 연골연화증의 진단에 있어 매우 유용한 검사가 될 것으로 사료된다. Purpose : Knee pain that has accompanied the accurate diagnosis of chondromalacia in the knee revealed fracture or ligament damage is not evident when examining patient, and test methods using a combination of pressure, when you examine the displacement of the patella, and joint position as the state s diagnostic, pressure on the knee as blood pressure checks was in when you evaluate the usefulness. Material and Methods : Knee pain and chondromalacia patient 20people, control patient 20people on the table and x-ray tube 90 degrees towards the head 25˚ patella tangential view, on the cover of blood pressure in check and then putting pressure 150mmHg patella tangential view. two images before and after the patellar articular surface displacement and the status of the location were evaluated. Results : Knee pain in patients and controls without applying pressure to the back of the check ligament of chondromalacia difficult to infer the presence of disease. However, putting pressure on the scanned image compression compared to patients before and after the change of distance of the femoral patella joint in all patients and 20people about 3mm. If the pressure of normal subjects before and after the knee bone change in the distance about a 1mm be observed as well, seeing analogy with chondromalacia. Conclusion : In a patient complaining of knee pain, fracture or ligament injury revealed significantly in patients with non- parallel with the existing test methods of compression tests performed using blood pressure, if expensive medical equipment or invasive testing, in general visual inspection in the diagnosis of chondromalacia is thought to be a very useful test .

시뮬레이션 모델링 방법에 따른 열부하 양상에 관한 연구

김헌중(Kim Heon-Joong),최원기(Choi Won-Ki),이현근(Lee Hyun-Geun),서승직(Suh Seung-Jik) 한국태양에너지학회 2007 한국태양에너지학회 학술대회논문집 Vol.- No.-

This study was focused on the thermal load patterns according to the modelling methods in simulation, so we performed the various simulation analysis to the two same volume buildings which are horizontal and vertical shapes. In this study, we analyzed the solar radiation entering into the zones through windows and the thermal load using the TRNSYS 16. Through this simulation researches, we found the following results ; When zoning, it was recommended to insert the integrated internal wall from the omitted internal walls and the zoning of each story was desirable to integrate the zones to east-west orientation because south wall obtained the most solar radiation. Also in the multi-stories building, what stories were integrated was undesirable to obtain the reliable results but it was possible to integrate each house-hold into one zone. Afterward, we are going to analyze various commercial programs on the modeling methods and estimate the omitted thermal factors in this study such as the shading device, internal thermal capacity, internal heat transfer coefficient and floor heating system, etc..

소방로봇 냉각시스템의 최적화를 위한 수치해석

임중연(Lim Joong Yeon),유명열(Yu Myoung Youl),김종권(Jong-Kwon Kim),이현근(Hyun Geun Lee),김준석(Junseok Kim) 대한기계학회 2008 대한기계학회 춘추학술대회 Vol.2008 No.11

In this presentation, we study numerically an optimization problem of a fire fighting robot cooling system. The governing equation for the system is the unsteady heat equation with source term. We use a multigrid method for numerical solutions in three-dimensional space. We investigated the effects of various parameters and the results will be presented.