태양광 발전의 효율 향상을 위한 새로운 태양추적 알고리즘 개발

최정식(Jung-Sik Choi),고재섭(Jae-Sub Ko),강성준(Sung-Jun Kang),백정우(Jeong-Woo Baek),장미금(Mi-Geum Jang),김순영(Sun-Young Kim),정동화(Dong-Hwa Chung) 대한전기학회 2009 대한전기학회 학술대회 논문집 Vol.2009 No.10

This paper proposes a novel solar tracking algorithm for improving of photovoltaic(PV) efficiency with tracking method. A novel solar tracking algorithm calculates the global latitude and longitude of earth with sun. Also, it considers the refraction of atmosphere, annual oscillation and perturbation of moon. Proposed algorithm is applied the PV generation unit with tracking method and observes the azimuth and altitude. Observed data compare to korea astronomy observatory and conventional position solar algorithm(PSA) data and analyzes the accuracy. Therefore, the validity of this paper proves by analyzed data.

적응학습 뉴로 퍼지 제어기를 이용한 유도전동기의 최대토크 제어

김순영(Sun-Young Kim),고재섭(Jae-Sub Ko),강성준(Sung-Jun Kang),장미금(Mi-Geum Jang),문주희(Ju-Hui Mun),이진국(Jin-Gook Lee),정동화(Dong-Hwa Chung) 한국조명·전기설비학회 2011 한국조명·전기설비학회 학술대회논문집 Vol.2011 No.5월

The paper is proposed maximum torque control of induction motor drive using adaptive learning neuro fuzzy controller and artificial neural network(ANN). The control method is applicable over the entire speed range and considered the limits of the inverter’s current and voltage rated value. For each control mode, a condition that determines the optimal d, q axis current ds qs i<SUB>ds</SUB>, i<SUB>qs</SUB> for maximum torque operation is derived. The proposed control algorithm is applied to induction motor drive system controlled adaptive learning neuro fuzzy controller and ANN controller, the operating characteristics controlled by maximum torque control are examined in detail. Also, this paper is proposed the analysis results to verify the effectiveness of the adaptive learning neuro fuzzy controller and ANN controller.

한국 여자프로골프선수의 연습시간이 완벽주의 성향과 경쟁불안에 미치는 영향

김순영(Kim, Soon-Young),김순미(Kim, Sun-Mi) 한국체육과학회 2011 한국체육과학회지 Vol.20 No.5

The purpose of this study was to investigate the effect of practice time on perfectionism and competitive state anxiety in the female professional golfers. In order to investigate the cause and effect relationship among those variables, one hundred female professional golfers were investigated from 2011 KLPGA tournament. Participants were divided into two groups, practice 1 and practice 2 groups, based on the amount of practice time. The practice time was set as an independent variable and perfectionism and competitive state anxiety were set as dependent variables. Data was analyzed with SPSS PC win 17.0 Version. Alpha was set at .05. Results were as follows; First, there was statistically significant difference between two groups. Practice 1 group exhibited higher mean on cognitive state anxiety and physical state anxiety while practice 2 group earned higher mean on parent criticism, parent expectations, and personal standards. Second, there were statistically significant differences in parent criticism and doubts about actions variables of perfectionism influenced on cognitive state anxiety and parent criticism variables of perfectionism influenced on physical state anxiety in practice 1 group. However, there were statistically significant difference in only doubts about actions variable of perfectionism influenced on cognitive state anxiety, physical state anxiety, and self-condition in practice 2 group.

‘좌우대칭 자’를 활용한 5학년 학생들의 점대칭도형의 의미 이해

김순영(Sun-Young Kim),이광호(Kwang-Ho Lee) 한국교원대학교 뇌기반교육연구소 2019 Brain, Digital, & Learning Vol.9 No.3

The purpose of this study is to analyze 5th graders’ Understandings of the meaning of Symmetric Figure for a Point and the types of problems or errors while constructing and to develop student’s Understandings using the New Educational Method. By the literature I arranged the complex meaning of ‘Symmetry’ in the sight of transformation, analyzed curriculums of Korea and other countries about ‘Point Symmetry’, and found out the cause of students’ difficulties while constructing the Symmetric Figure for a Point. For solving this problem I made the ‘Bilateral Symmetric Ruler’ and ‘Problems without the grid’. And students had the lessons of construction of Symmetric Figure for a Point using them. After the lesson, I analyzed the effectiveness of the new educational method using the questionnaire and the interview.

KLPGA 1부 투어선수의 경기력에 따른 동기유형이 직업만족과 생활만족에 미치는 영향

김순영(Kim, Soon-Young),김순미(Kim, Sun-Mi) 한국체육과학회 2013 한국체육과학회지 Vol.22 No.3

The purpose of this study was to investigate the relationship of sport motivation to job satisfaction and life satisfaction according to performance level among KLPGA players. One hundred two KLPGA golfers participated in this study and were sampled from the 2012 KLPGA tour seed. The participants were surveyed and assigned either high level or low level’s group. Sport motivation consisting three sub-scale based on Vallerand(l992)’s scale and Job Satisfaction consisting three sub-scale based on Kahn(l981)’s scale and Life Satisfaction consisting five sub-scale based on Diner et al.(1985)’s scale were used. Data was analyzed with SPSS PC win 17.0 Version and cronbach’s a coefficient was calculated for measuring internal consistency reliability. Independent t-test was conducted to examine the difference of two groups and multiple regression analysis was also conducted to analyze the relationship of sport participation motivation to job satisfaction and life satisfaction. Results were as follows; First, there were statistically significant differences on intrinsic motivation and life satisfaction. Second, there were sport participation motivation revealed that motiveless and extrinsic motivation were positively correlated with job satisfaction and life satisfaction and internal motivation was negatively correlated with job satisfaction and life satisfaction on both groups. The study concluded that female professional golfers needed internal motivation to increase life satisfaction.

다중 AFLC를 이용한 IPMSM 드라이브의 효율 최적화 제어

김순영(Sun-Young Kim),고재섭(Jae-Sub Ko),최정식(Jung-Sik Choi),강성준(Sung-Jun Kang),백정우(Jeong-woo Baek),장미금(Mi-Geum Jang),정동화(Dong-Hwa Chung) 대한전기학회 2009 대한전기학회 학술대회 논문집 Vol.2009 No.10

This paper proposes efficiency optimization control of interior permanent magnet synchronous motor(IPMSM) drive using multi adaptive fuzzy learning controller(AFLC). In order to optimize the efficiency the loss minimization algorithm is developed based on motor model and operating condition. The controllable electrical loss which consists of the copper loss and the iron loss can be minimized by the optimal control of the armature current. The minimization of loss is possible to realize efficiency optimization control for the proposed IPMSM The optimal current can be decided according to the operating speed and the load conditions. This paper considers the design and implementation of novel technique of high performance speed control for IPMSM using multi-AFLC. The proposed control algorithm is applied to IPMSM drive system controlled AFLC, the operating characteristics controlled by efficiency optimization control are examined in detail.

대전광역시와 충청남도의 13년간(2000-2012) 대장암 발생 추세

김순영(Soon-Young Kim),권인선(In-Sun Kweon),김정아(Jung-A Kim),이태용(Tae-Yong Lee),남해성(Hae-Sung Nam) 한국농촌의학 지역보건학회 2015 농촌의학·지역보건 Vol.40 No.3

대장암 발생에 관한 국내 역학연구는 매우 부족한 상황으로 국가단위 대장암 발생률의 추세는 보고되어 왔지만 광역 지역에서의 추세 연구는 미흡한 실정이다. 본 연구에서는 대전과 충남의 대장암 발생률 추세를 결장암과 직장암으로 구분하여 기술하고자 한다. 2000-2012년도 기간 동안 해당 지역암등록 자료를 이용하여 세계표준인구를 기준으로 연령표준화 대장암 발생률을 산출하였다. 발생률 추세는 Joinpoint Regression Program으로 분석하여 연평균 변화율(Average Annual Percent Change, AAPC)로 나타내었다. 연구 대상 암등록자료의 질적 수준 평가에서 충실도 지표(MI%)와 타당도 지표(DCO%, MV%, PSU%, AUK%)는 암발생률의 추세를 기술하기에 전반적으로 적정한 수준이었다. 13년 동안 연령표준화 대장암 발생률은 남성과 여성 모두 지속적으로 증가하였다. 대전지역에서 남성의 경우 2000년 10만 명당 37.2건에서 2012년 51.7건으로 연평균 3.9%(AAPC) 증가하였고, 여성의 경우 2000년 10만 명당 17.1건에서 2012년 28.4건으로 연평균 3.9% 증가하였다. 충남지역에서 남성의 경우 2000년 10만 명당 29.8건에서 2012년 50.1건으로 연평균 5.1% 증가하였고, 여성의 경우 2000년 10만 명당 15.9건에서 2012년 26.6건으로 연평균 3.2% 증가하였다. 이를 결장암과 직장암으로 분류하여 살펴보면 남녀 모두 결장암의 증가 추세가 직장암 증가보다 더 컸고, 직장암의 증가는 남성이 여성보다 더 빠른 추세였다. 결론적으로 대전과 충남의 대장암 발생은 2000년 이후 13년간 빠른 증가추세를 보였다. 이를 억제하기 위한 대장암 발생 감시와 예방에 지역사회의 관심을 더 높일 필요가 있다. Objectives: Colorectal cancer is one of the major cancers in South Korea. We described the time trends in colorectal cancer incidence in Daejeon, a metropolitan city, and Chungcheongnam-do (Chungnam), a rural province, South Korea. Methods: Using the databases from the Daejeon Cancer Registry (DCR) and the Chungnam Cancer Registry (CCR), age-standardized (to world standard population) rates for incidence (ASRW) were calculated. Average annual percent change (AAPC) was assessed as a trend indicator. The completeness (such as the mortality/incidence ratio) and validity (such as the death certificate only %, microscopic verification %, primary site uncertain %, and age unknown %) were analyzed to examine the data quality of DCR and CCR. Results: Incidence of colorectal cancer showed increasing trend in both sexes. Over the years 2000-2012 in Daejeon, ASRW was increased significantly from 37.2 to 51.7 per 100,000 person-years (AAPC, 3.9%) among men and from 17.1 to 28.4 (AAPC, 3.9%) among women, respectively. In Chungnam, ASRW was also increased from 29.8 to 50.1 per 100,000 person-years (AAPC, 5.1%) among men and from 15.9 to 26.6 (AAPC, 3.2%) among women, respectively. The AAPC for colon cancer was greater than rectal cancer in both Daejeon and Chungnam. The trend of rectal cancer incidence was differ by sex (AAPC in men vs women, 2.7% vs 1.7% in Daejeon; 3.5% vs 0.8% in Chungnam). Indices of completeness and validity showed that the quality control of DCR and CCR was adequate to describe the trends of ASRW. Conclusions: Both Daejeon and Chungnam have had a rapid increase in colorectal cancer incidence. Monitoring and intervention are required on the risk factors which may contribute to this trend.

共同住宅事業에서 入住豫定者의 入住金 納付패턴을 考慮한 現金흐름 豫測모델 開發

김순영(Kim Soon-Young),한충희(Han Choong-Hee),김균태(Kim Kyoon-Tai),김선국(Kim Sun-Kuk) 대한건축학회 2003 大韓建築學會論文集 : 構造系 Vol.19 No.6

Since the financial crisis broke out in 1997, it has become important to secure liquidity of capital in the early stage of housing construction project. However, many construction companies have failed to forecast cash flow precisely, which is prerequisite to obtain flexible cash flow. It results from existing cash flow forecasting method which is mainly focusing on predicting profit and loss fluctuation. Under the current financing in the housing construction company, there is no proper method to forecast not only the profit and loss but also the fluctuation of the cash flow of a project. Therefore, it is difficult to guarantee the liquidity of capital in the final stage of project with regardless of factors such as prepayment and payment delay which are irrelevant to the economic feasibility but have an influence on the fluctuation of the cash flow. This research performs an analysis on practical housing collection pattern from prepayment and payment delay and then compares it to the cash flow predicted in the early stage of feasibility analysis. Finally it proposes more accurate cash flow forecasting model in the planning phase of the project. It can also be used to analyze and complement the initial cash flow forecasting plan, so that it can contribute to achieve accurate cash flow forecasting by reflecting real situation better and finally to enhance efficiency in the capital management.

고효율 태양광 발전 시스템을 위한 능동형 추적 알고리즘 개발

김순영(Soon-Young Kim),고재섭(Jae-Sun Ko),최정식(Jung-Sik Choi),강성준(Sung-Jun Kang),백정우(Jeong-Woo Baek),장미금(Mi-Geum Jang),정동화(Dong-Hwa Chung) 한국조명·전기설비학회 2009 한국조명·전기설비학회 학술대회논문집 Vol.2009 No.10월

대학병원 간호사들의 직무스트레스와 피로수준과의 관련성

김순영(Kim, Soon-Yeong),권인선(Kwon, In-Sun),조영채(Cho, Young-Chae) 한국산학기술학회 2012 한국산학기술학회논문지 Vol.13 No.4

본 연구는 한 대학병원에 근무하고 있는 간호사들의 피로수준을 파악하고, 인구사회학적 특성, 건강관련행위 특성, 직업관련 특성 및 직무스트레스 내용과 피로수준과의 관련성을 규명하고자 하였다. 조사대상은 대전광역시의 한 대학병원에 근무하고 있는 전체 간호사 726명을 대상으로 계통추출법에 의해 추출한 450명으로 하였으며, 조사는 2010년 10월 1일부터 10월 31일까지의 기간 동안에 구조화된 무기명 자기기입식 설문지를 이용한 설문조사에 의하였 다. 연구 결과, 조사대상자의 피로수준의 분포는 정상 군이 75.1%, 고위험 피로 군이 24.9%이었으며, 직무스트레스 내용별 고위험피로수준의 분포는 업무요구도가 높을수록, 업무의 자율성이 낮을수록, 상사의 지지도가 낮을수록 유의 하게 높았다. 또한 피로수준은 업무요구도와 유의한 양의 상관관계를 보인 반면, 업무의 자율성, 상사의 지지도와는 유의한 음의 상관관계를 보였다. 로지스틱 회귀분석 결과, 다른 변수를 통제한 다변량 모델에서 업무요구도는 가장 낮은 군(Q1)에 비해 높은 군(Q3, Q4)에서, 고위험 피로 군에 속할 위험도가 유의하게 증가한 반면, 업무의 자율성은 가장 낮은 군(Q1)에 비해 높은 군(Q3, Q4)에서 고위험 피로 군에 속할 위험도가 유의하게 감소하였다. 결론적으로 조 사대상 간호사들이 경험하는 직무스트레스 내용은 독립적으로 피로수준에 영향을 미치는 요인임이 확인되었다. The present study was intended to measure the level of fatigue symptoms among nurses working for a university hospital and to reveal its related factors. The self-administered questionnaires were given to 450 nurses during the period from October 1st to 31st, 2010. As a results, the level of fatigue symptoms were 75.1% in normal group, and the high-risk group 24.9%. The level of fatigue symptoms reflected in job stress contents were higher as job demand was higher, and the autonomy of job and the supervisor support was lower. In correlations, fatigue symptoms were found to be in a positive correlation with job demand, whereas in negative correlation with autonomy of job and supervisor support. The adjusted odds ratio of fatigue symptoms on job demand were significantly increased in the high risk group than in low group, but autonomy of job. were significantly decreased in the high risk group than in low group. In conclusion, the study results indicated that the level of fatigue symptoms is independently influenced by job stress contents.