서울지역 약수터의 수질특성에 관한 연구

김광래,길혜경,김현국,김은숙,노방식,홍주희,이진,김정연,이만호,엄석원,이재영,Kim, Kwang-Rae,Gil, Hae-Kyung,Kim, Hyun-Kook,Kim, Eun-Sook,Roh, Bang-Sik,Hong, Ju-Hee,Lee, Jin,Kim, Jeong-Yeon,Lee, Man-Ho,Eom, Seok-Won,Lee, Jai-Young 한국지하수토양환경학회 2010 지하수토양환경 Vol.15 No.6

We investigated springs in Seoul in 2009 to know the change of water quality according to storage method of spring water, the concentration of chemical compounds and their correlation. Even spring water that originally satisfied national standard for drinking water could be exceeded national standard for drinking water by storage method such as storage bottle, temperature and period; especially used PET bottles could affect the increase of total colony counts. Therefore, spring water is desirable to be consumed on the spot, or to be stored in sterilized bottles in refrigerator rather than room temperature at home, and also to be consumed shortly not exceeding 24 hours. Total colony counts, coliform, yersinia, $F^-$, $Cl^-$, $NO_3^--N$, hardness, total Solids, pH, color and Al were exceeded national standard for drinking water at some springs. The result of correlation analysis shows that hardness and total solids, which are caused by several ionic compounds, had relatively high correlations with other chemical compounds.

녹지공간의 자연성과 선호성 분석에 관한 연구

김광래,허준,노재현,Kim, kwang-Rai,Huh, Joon,Roh, Jae-Hyun 한국조경학회 1993 韓國造景學會誌 Vol.20 No.4

The purpose of this study was to suggest objective basic data for landscape research which cotained interdiciplinary approach between ecological and psychophysical method. For this, the naturalness and preference in greenary space, spatial image structure of physical elements have been analyzed by correlation coefficient and factor analysis algorithm. The results are as follows; 1. The relation between the estimation of naturalness and the preference in natural forest was deeply correlated. And the estimation of naturalness was higher than the estimation of DGN(Degree of Green Naturality). 2. The estimation of naturalnesss was decided by the physical features of forest and was different from the DGN. 3. Factors covering the spatial image of the forests have been found to be the 'overall evaluation', 'ability', 'naturalness' and 'idiosyncracy'. By using the control method for the number of factors, T.V. has been obtained as 61.68%. 4. The factors of the 'overall evauation', 'naturalness' were found to be the main factors determining the visual preference of greenary space.

서울지역 약수터에 대한 시민 여론 조사

김광래,길혜경,이만호,엄석원,이재영,Kim, Kwang-Rae,Gil, Hae-Kyung,Lee, Man-Ho,Eom, Seok-Won,Lee, Jai-Young 한국지하수토양환경학회 2011 지하수토양환경 Vol.16 No.2

We surveyed the citizens opinion about springs in Seoul for two years from 2008 to 2009. It was found that spring water was mostly used by citizens older than 50, and that 29.5% of citizens used purified tap water as drinking water, 27.2% of them used boiled tap water, 21.1% of them used spring water, and 12.1% of them used bottled water. Citizens who store spring water more than a day are 76.7%. Although many citizens (70.3%) knew that water quality had been tested, 40% of them didn't care about checking the certificate of water quality analysis. Once recognized that the spring water was unfit for drinking exceeded standard of drinking water, 85% of citizens would rather not use the spring water.

$\beta$ -Lactam Derivatives as Inhibitors for Carboxypeptidase A. Enzyme Inhibitor Design, Part 17

김광래,Kim, Gwang Rae 대한화학회 1996 Bulletin of the Korean Chemical Society Vol.17 No.1

2-(Azetidin-2-one-1-yl)-3-phenylpropionic acid and 2-(azetidin-2-thione-1-yl)-3-phenylpropionic acid were designed as potential active site directed inactivators for carboxypeptidase A, but shown to be they are competitive reversible inhibitors for the enzyme. The observation was somewhat surprising, but is not unexpected considering the recent report of Page who questioned the validity of the generally believed notion that $\beta-lactam$ ring is highly unstable.

이항 선택 모형에서의 절단 모수 선택

김광래,조규동,구자용,Kim, Kwang-Rae,Cho, Kyu-Dong,Koo, Ja-Yong 한국통계학회 2010 Communications for statistical applications and me Vol.17 No.6

본 논문에서는 통계적 역문제로서 이항 선택모형에서의 밀도추정 방법에 대하여 연구하였다. 밀도함수의 추정을 위하여 직교열 기저를 이용하였으며, 모형의 복잡성과 예측의 정확성을 반영한 적절한 절단모수의 선택에 대하여 고려하였다. 이항 선택 모형에서 데이터에 의존하는 절단모수를 선택하는 방법에 대해 제안하고 모의실험, 실자료를 통해 제안한 방법의 성능을 규명하였다. This paper deals with a density estimation method in binary choice models that can be regarded as a statistical inverse problem. We use an orthogonal basis to estimate density function and consider the choice of an appropriate truncation parameter to reflect the model complexity and the prediction accuracy. We propose a data-dependent rule to choose the truncation parameter in the context of binary choice models. A numerical simulation is provided to illustrate the performance of the proposed method.

보강된 실린더의 진동특성에 관한 연구

김광래,장용훈,Kim, Gwang-Rae,Jang, Yong-Hun 대한기계학회 2001 大韓機械學會論文集A Vol.25 No.3

The structural characteristics of the stiffened double cylinder was investigated through experiment and analysis. The outside cylinder was excited with piezoelectric actuator and the mode shape of the cylinder with stiffening T frame was obtained by using holographic interferometry. Finite element method was applied for further modal investigation of the stiffened cylinder. The experimental results showed that the mode shape of cylinder was dependent on the exciting frequencies and the T frame showed salient effect of damping at most of the resonent frequencies. In particular frequencies, the T frame worked as a transmitter. FFM showed similar results with the experiments. This paper showed that the laser-based method such as holographic interferometry is well suited for investigation of the whole-field mode shapes and FEM has good performance to estimate the medal characteristics of the mechanical structure.

수중과 지상에서의 태극권 운동수행이 노인 여성들의 활동 체력에 미치는 영향

김광래(Kim Kwang Lae),김지혁(Kim Ji Hyeok),김태욱(Kim Tae Wook),Richard B Kreider 한국노년학회 2014 한국노년학 Vol.34 No.4

태극권 운동은 노인 여성들의 활동 체력을 향상시켜 주는 운동으로 알려져 있다. 그러나 수중에서 태극권 운동을 수행하는 것이 효과적인지 아니면 지상에서 수행하는 것이 효과적인지는 제시되지 않고 있다. 따라서 본 연구의 목적은 수중과 지상에서 태극권 운동을 수행한 후 노인 여성들의 활동 체력을 비교ㆍ분석하여 태극권의 효과적인 운동 형태를 제시하고자 하는데 있다. 서울시 소재 N 실버타운에 거주하는 노인 여성들 중 태극권 운동을 수행하는데 있어서 신체적ㆍ정신적으로 문제가 없는 26명의 노인 여성들을 연구대상으로 하여 수중 태극권 운동집단(n=13)과 지상 태극권 운동 집단(n=13)으로 분류하여 손식 태극권을 50-65분, 주당 2회, 32주간을 실시하여 활동 체력을 태극권 운동전, 태극권 운동16주후, 태극권 운동32주후에 측정하여 비교ㆍ분석 하였으며, 활동 체력검사 항목들 중 6분 걷기, 덤벨들기, 의자에서 앉았다 일어나기, 등뒤에서 손잡기, 의자앉아 앞으로 굽히기, 3m 왕복걷기는 senior fitness test(SFT) 방법을 적용하여 검사를 수행하였으며 눈감고 외발서기는 체육과학연구원의 방법을 적용 하여 검사를 수행하였다. 분석 결과 6분 걷기(p<.007), 덤벨들기(p<.043), 의자에서 앉았다가 일어나기(p<.000), 3m 왕복 걷기(p<.003)에서 운동처치 방법과 상관없이 운동기간에서 유의한 차이가 있는 것으로 나타났으며, 등뒤에서 손잡기는 운동기간에 따라 유의한 차이가 있었으며(p<.000), 집단과 기간의 상호작용에서도 유의한 차이가 있는 것으로 나타났다(p<.006). 눈감고 외발서기는 집단간(p<.045), 운동 기간(p<.004)에서 유의한 차이가 있는 것으로 나타났으며, 집단과 기간의 상호작용에서도 유의한 차이가 있는 것으로 나타났다(p<.005). 결론적으로 태극권 운동은 운동 처치 방법에 상관없이 노인 여성들의 심폐지구력, 상지근력, 하지근력, 민첩성(동적 평형성)에 유의한 효과가 존재하는 것으로 나타났으며, 어깨 유연성과 평형성은 수중 태극권 운동 집단이 지상태극권 운동 집단 보다 운동 기간의 경과에 따라 증가하는 경향을 보이는 것으로 나타났다. Tai chi exercise is recommended for elderly women, but it is not clear whether aqua tai chi or land tai chi produces a greater functional physical fitness. The aim of the present study was to compare the effect of the aqua tai chi and land tai chi on variables for functional physical fitness. We carried out a randomized controlled trial study with 26 elderly women who were clinically healthy and divided into the aqua tai chi exercise group (ATCE, n=13) and land tai chi exercise group (LTCE, n=13). Both groups is performed 12 forms of sun-style tai chi for 50-65min, 2 times per week for 32 weeks and test of functional physical fitness were administered before and after 16 week, 32 week trial. Regardless of tai chi exercise group, 6 min walk (p<.007), Dumbbell lift (p<.043), Sit to stand (p<.000), Up and go (p<.003) showed significant difference according to the exercise period. Back scratch showed significant difference (p<.000) according to exercise period and significant difference interaction effect (p<.006). Balancing on one leg showed significant difference (p<.004) according to exercise period, significant differences (p<.045) between exercise group, significant interaction effect (p<.005). It conclusion that regardless of tai chi exercise group, tai chi exercise is improve cardiovascular endurance, muscular strength, agility, dynamic balance in elderly women. And in shoulder flexibility, balance, aqua tai chi exercise group showed a higher trend than land tai chi according to the exercise period.

MFF-RLS와 EKF 실시간 연동 알고리즘을 이용한 EV용 Li-ion 배터리의 고 정밀 SOC 추정

김광래(Kwangrae Kim),김민호(Minho Kim),유정욱(Jungwook Yu),김정수(Jungsoo Kim),이학준(Hakjun Lee),한수희(Soohee Han) 대한전기학회 2017 대한전기학회 학술대회 논문집 Vol.2017 No.10

발기 부전에서 유산소성 운동의 역할: 무작위 통제 연구의 고찰

김광래 ( Kwang Lae Kim ) 한국운동생리학회(구 한국운동과학회) 2021 운동과학 Vol.30 No.2

PURPOSE: This study aimed to determine the role or applicability of aerobic exercise in erectile dysfunction. METHODS: This narrative review was conducted by searching terms such as ‘impotence,’ ‘erectile dysfunction,’ ‘erection dysfunction,’ ‘sexual dysfunction,’ ‘aerobic exercise,’ ‘aerobic training,’ ‘cardiovascular exercise,’ ‘cardiovascular training,’ ‘human,’ ‘randomized controlled trials,’ and ‘randomized clinical trials’ in the titles or abstracts in PubMed, Google Scholar, Scopus, Wiley Online Library, and Science Direct databases. RESULTS: Nine articles met the inclusion criteria. Aerobic exercise of light (low)-vigorous (high) intensity was found to be effective in erectile dysfunction in seven articles. CONCLUSIONS: In case of mild-moderate erectile dysfunction accompanied by high blood pressure, obesity, physical inactivity, metabolic syndrome, acute myocardial infarction, and ischemic heart disease, it is suggested that following an aerobic exercise program has potential advantages. Further clinical research is required to compare nonlinear aerobic exercise with linear aerobic exercise in the population with erectile dysfunction.

어린이집 코로나19 관련 연구 동향 : 국내의 학술지논문을 중심으로

김광래(Kim, Kwang-Lae),전진호(Jeon, Jin-Ho) 한국유아교육·보육복지학회 2021 유아교육·보육복지연구 Vol.25 No.4

본 연구는 코로나19로 인한 어린이집 관련 연구 동향을 살펴보고자 한다, 코로나19이후 어린이집 관련 연구 흐름이 어떠했는지, 어떤 주제와 대상으로 연구가 진행되었는지, 그리고 연구의 결과는 어떻게 도출되었는지를 살펴보고자 한다. 본 연구를 위하여 2020년3월 코로나19 이후 코로나19 관련 어린이집 대상 연구 주제를 2020년부터 2021년 9월 까지 발행된 학술지 논문 총 23편을 분석의 대상으로 선정하였다. 연구 결과 첫째, 어린이집의 비대면 온라인 수업 활성화 연구와 코로나19 팬데믹 상황에서 정부에서 시행한 긴급보육 실태, 보육교사들이 감염병 위기상황에 대한 연구도 있었다. 즉, 코로나19를 경험하는 어려움과 코로나19 확산을 예방하고 올바르게 대처하는 연구가 있었다. 둘째, 학부모의 코로나19 학부모의 정신건강 영향요인 확인 연구와 COVID-19 대유행 전과 후의 교사의 직무스트레스 비율의 차이를 분석하고, 직무스트레스 비율과 교사 정신건강 연구도 있었다. 셋째, 코로나19로 달라진 어린이집 일상의 의미를 종합적으로 고찰한 연구도 의미가 있었다. 넷째, 긴급 돌봄의 운영에서 어떠한 어려움과 쟁점이 무엇이 있었는지 정부의 대응과 유치원 및 어린이집 현황 자료를 통해 점검하는 계기가 되었다. 다섯째, 코로나19로 유아반 교사들의 디지털 매체 활용 현황과 포스트코로나19 시대의 수업방법(비대면) 지향점을 찾아보는 결과도 있었다. 선행 연구결과를 토대로 향후 코로나19 이후 어린이집의 운영 방안과 연구의 시발점, 원생과 학부모님의 다양한 연구가 지속 되는 계기가 되길 본 연구자는 제안합니다. This study aims to examine the research trends related to daycare centers due to COVID-19, what the research flow for daycare centers has been since COVID-19, what topics and subjects the research was conducted, and how the research results were derived. For this study, a total of 23 academic journal papers published from 2020 to September 2021 were selected for the analysis of the research topics for daycare centers related to COVID-19 after Corona 19 in March 2020. As a result of the study, a study on the revitalization of non-face-to-face online classes in daycare centers, the situation of emergency childcare implemented by the government in the context of the COVID-19 pandemic, and the difficulties that daycare teachers experience during an infectious disease crisis Methods were studied. Second, there was a study to confirm parents mental health influencing factors of Corona 19 and analyzed the difference between the teacher s job stress ratio before and after the COVID-19 pandemic. Third, a study that comprehensively considered the meaning of daily life at daycare that has changed due to COVID-19 was also meaningful. Fourth, it was an opportunity to check what difficulties and issues there were in the operation of emergency care through the government s response and the current state of kindergartens and daycare centers. Fifth, there was also a result of finding the current status of digital media use by nursery class teachers due to COVID-19 and the direction of teaching methods (non-face-to-face) in the post-COVID-19. Based on the results of this previous study, this researcher proposes that it will serve as a starting point for the operation plan of daycare centers and research after COVID-19, and as an opportunity to continue various studies of students and their parents.