의료기관의 재무성과에 영향을 미치는 요인

장현기 ( Hyeon Gi Jang ),감신 ( Sin Kam ),박재용 ( Jae Yong Park ),박기수 ( Ki Soo Park ),한창현 ( Chang Hyun Han ),차병준 ( Byung Jun Cha ) 한국병원경영학회 1999 병원경영학회지 Vol.4 No.1

This study was performed to assess the financial performance of medical institutions and examine the affecting factors in Taegu metropolitan and Kyungpook province. The major results are as follows ; The liability to total assets was significantly different according to the ownership type of medical institution. It was the highest in the case of juridical person having a special status. The total assets turnover and value added to total assets were significantly different according to the type of medical institution, period of establishment, and ownership type of medical institution. They were higher in the tertiary medical institution, in private hospital and university hospital, and they were increased with establishment period of medical institution. The growth rate of patient revenues were significantly different according to the type of medical institution, period of establishment, and the growth rate of adjusted inpatient days were significantly different by period of establishment. The return on assets and net profit to gross revenues were the highest in private hospital. Private hospital went into the black, but other hospitals went into the red figures. According to the multiple regression analysis for the net profit to gross revenues, ownership type, period of establishment, and management strategy of medical institution were significant. It was higher in private hospital and medical institution with prospector management strategy, and it was increased with establishment period of medical institution. In multiple logistic regression analysis for the status of financial performance in medical institution, period of establishment, management strategy of medical institution were significant. It was better in medical institution with prospector management strategy and longer period of establishment.

유아기 어머니의 결혼만족도와 자녀 문제행동간의 관계에서 어머니 정신건강의 매개효과

조준오 ( Jun Oh Jo ),장현기 ( Hyun Gi Jang ),이희영 ( Hee Yeong Lee ) 한국아동교육학회 2016 아동교육 Vol.25 No.2

본 연구는 유아기 어머니의 결혼만족도와 자녀 문제행동 간의 관계에서 어머니 정신건강의 매개 효과를 살펴보기 위한 목적으로 수행되었다. 이를 위해 부산시에 소재한 유치원 6곳에서 재원중인 만 3, 4, 5세 유아 293명과 그들의 어머니 293명을 대상으로 자료를 수집하였고, 수집된 자료는 구조방정식 모형을 사용하여 분석하였다. 연구결과 는 다음과 같다. 첫째, 유아기 어머니의 결혼만 족도와 정신건강 및 유아 문제행동간의 구조관계를 검증한 결과, 1) 유아기 어머니의 결혼만족도와 어머니의 정신건강 간에는 정적 상관이 있었고, 2) 유아기 어머니의 결혼만족도와 유아의 문제 행동 간에는 부적 상관이 있었으며, 3) 유아기 어머니의 정신건강은 유아 문제행동에 정적 예측관계 가 있었다. 둘째, 유아기 어머니의 결혼만족도와 유아의 문제행동 사이에서 어머니의 정신건강은 부 분매개효과를 나타내었다. 본 연구를 통하여 유아기 어머니의 결혼만족도와 정신건강, 그리고 유아 의 문제행동간의 구조적 관계를 밝힘으로써 유아의 문제행동을 감소시킬 뿐만 아니라 자녀 양육에 있어 어머니가 가지는 결혼만족도 및 정신건강의 중요성을 확인할 수 있는 계기가 될 것이라 판단 한다. The purpose of this study was to examine the mediating effect of mothers’ mental health on the relationship between marital satisfaction and preschoolers’ problem behaviors. The subjects of this study were 293 preschoolers who attend six different kindergartens located in Busan and their mothers. The preschoolers were at the ages of fou, five and six. Major findings of the study were as follows: First, analysis of structural relationships among marital satisfaction, mothers’ mental health and preschooler problems behaviors revealed that 1) the mothers of the preschoolers were in better mental health when they were more satisfied with their marriage. 2) the preschoolers showed less problem behaviors when the marital satisfaction of their mothers was higher. 3) the mental health of the mothers had a positive predicting relationship with the young children``s problem behaviors. Second, the mental health of the mothers had partial mediating effects on the relationship between their marital satisfaction and the young children``s problem behaviors. The significance of this study is to reveal the structural relationship among the preschoolers’ behavior problems, their mothers’ marital satisfaction and mental health and thus identify the importance of marital satisfaction and mental health in reducing preschoolers’ problem behaviors and raising young children.

관점지향프로그래밍(AOP)의 소개와 응용

최재영(Jea Young Choi),곽동규(Dong Gyu Kwak),이명철(Myoung Chul Lee),장현기(Hyun Gi Jang),백영상(Young Sang Paik) 한국정보과학회 2006 정보과학회지 Vol.24 No.12

유전 및 육종 : 한우 도체형질의 유전능력평가를 위한 통계모형 탐색

구양모 ( Yang Mo Koo ),김시동 ( Si Dong Kim ),김정일 ( Jung Il Kim ),송치은 ( Chi Eun Song ),이기환 ( Ki Hwam Lee ),정용호 ( Yeoung Ho Jeoung ),이재윤 ( Jae Youn Lee ),장현기 ( Hyun Gi Jang ),박병호 ( Byoung Ho Park ),최태정 ( Te 한국동물자원과학회(구 한국축산학회) 2011 한국축산학회지 Vol.53 No.4

2006년부터 2009년까지 축산물품질평가원에서 등급 판정된 도체성적이 있는 개체와 한국종축개량협회에 등록이 확인된 231,382두의 자료를 이용하여 각 도체형질의 자료구조 분석 등을 살펴보고, 각 요인별로 도체형질에 어떠한 영향을 주는 지에 대한 환경효과 등을 분석하고, 변수선택법 등을 이용하여 향후 유전능력평가에서 사용 가능한 통계모형 찾아내고자 실시하였다. 한우 암, 수, 거세를 포함한 전체집단에서 출하체중, 도체율, 등지방두께, 근내지방도에서 정규분포를 보이고 있었고, 다른 형질은 정규분포에 근접함을 확인할 수 있었다. 각 요인에 대한 분산분석에서는 한우 도체형질에 대하여 성별, 출생년도-계절, 도축년도-계절, 출생지역, 도축일령의 모두 고도의 유의성(p<0.01)이 인정되었다. 변수선택법을 이용한 모형적합도 검정에서는 출하체중, 도체중, 도체율, 배최장근단면적은 다섯 가지 환경효과를 선택하는 것이 최적이었고, 등지방두께와 근내지방도는 네 가지 환경효과를 고려하는 것이 최적이었지만, 다형질 분석으로 한 번에 분석을 하기 위해서는 다섯 가지 환경효과를 함께 고려하는 것이 적합하다고 사료된다. This study was conducted to study the environment effects on live weight, carcass weight, dressing percentage, eye muscle area, backfat thickness, and marbling score, which are the carcass traits of Hanwoo, based on the estimates and all the possible regression for the selection of variable and significance test for 231,382 heads that underwent the carcass measurements. The average and standard deviation for the live weight, carcass weight, dressing percentage, eye muscle area, backfat thickness, and marbling score were 654.79±91.61kg, 362.30±67.15kg, 59.52±0.03%, 81.79±12.21cm², 11.39±5.40mm, 4.38±2.29, respectively. The live weight, carcass weight, dressing percentage, eye muscle area, backfat thickness, and marbling score for cow were 532.79±78.38kg, 313.40±44.90kg, 56.50±0.03%, 75.24±10.69cm², 11.82±5.10mm, 4.30±2.06, respectively, while for bull were 619.74±93.27kg, 376.89±48.62kg, 58.61±0.02%, 85.61±10.46cm², 5.64±2.71mm, 1.41±0.83, respectively, and for steer were 681.78±70.72kg, 415.23±49.43kg, 60.19±0.02%, 88.29±10.27cm², 12.71±5.23mm, 5.42±1.99, respectively. In the environmental variables selection based on the variables selection method, the examination by carcass traits suggested that the most appropriate model could be determined when five variables were selected for the live weight, carcass weight, dressing percentage, eye muscle area, and four variables for backfat thickness, and marbling score. When they were considered at a time altogether based on multiple traits, it was deemed to be desirable to insert all five variables into the variables for analysis. In addition, high significance was found by carcass traits.

유전 및 육종 : 단형질 개체모형을 이용한 한우 육종가 추정프로그램 개발

구양모 ( Yang Mo Koo ),김정일 ( Jung Il Kim ),송치은 ( Chi Eun Song ),이기환 ( Ki Hwan Lee ),신재영 ( Jae Young Shin ),장현기 ( Hyun Gi Jang ),최태정 ( Tae Jeong Choi ),김시동 ( Di Dong Kim ),박병호 ( Byoung Ho Park ),조광현 ( Kwa 한국동물자원과학회(구 한국축산학회) 2013 한국축산학회지 Vol.55 No.5

Estimate breeding value can be used as single trait animal model was developed directly using the Fortran language program. The program is based on data computed by using the indirect method repeatedly. The program develops a common algorithm and imprves efficiency. Algorithm efficiency was compared between the two programs. Estimated using the solution is easy to farm and brand the service, pedigree data base was associated with the development of an improved system. The existing program that uses the single trait animal model and the comparative analysis of efficiency is weak because the estimation of the solution and the conventional algorithm programmed through regular formulation involve many repetition; therefore, the newly developed algorithm was conducted to improve speed by reducing the repetition. Single trait animal model was used to analyze Gauss-Seidel iteration method, and the aforesaid two algorithms were compared thorough the mixed model equation which is used the most commonly in estimating the current breeding value by applying the procedures such as the preparation of information necessary for modelling, removal of duplicative data, verifying the parent information of based population in the pedigree data, and assigning sequential numbers, etc. The existing conventional algorithm is the method for reading and recording the data by utilizing the successive repetitive sentences, while new algorithm is the method for directly generating the left hand side for estimation based on effect. Two programs were developed to ensure the accurate evaluation. BLUPF90 and MTDFREML were compared using the estimated solution. In relation to the pearson and spearman correlation, the estimated breeding value correlation coefficients were highest among all traits over 99.5%. Depending on the breeding value of the high correlation in Model Ⅰ and Model Ⅱ, accurate evaluation can be found. The number of iteration to convergence was 2,568 in Model Ⅰ and 1,038 in Model Ⅱ. The speed of solving was 256.008 seconds in Model Ⅰ and 235.729 seconds in Model Ⅱ. Model Ⅱ had a speed of approximately 10% more than Model Ⅰ. Therefore, it is considered to be much more effective to analyze large data through the improved algorithm than the existing method. If the corresponding program is systemized and utilized for the consulting of farm and industrial services, it would make contribution to the early selection of individual, shorten the generation, and cultivation of superior groups, and help develop the Hanwoo industry further through the improvement of breeding value based enhancement, ultimately paving the way for the country to evolve into an advanced livestock country.