생쥐와 인간배아의 완만동결-급속융해 후 생존률과 배아발생에 미치는 Ethylene Glycol (EG)과 1,2-Propanediol (PROH)의 영향

김태형,차수경,이동률,한지은,이우식,윤태기,차광렬,정형민,Kim, Tae-Hyung,Cha, Soo-Kyung,Lee, Dong-Ryul,Han, Jee-Eun,Lee, Woo-Sik,Yoon, Tai-Ki,Cha, Kwang-Yul,Chung, Hyung-Min 대한생식의학회 2004 Clinical and Experimental Reproductive Medicine Vol.31 No.1

Objective: The aim of this study were to compare the effects of EG and PROH on cryopreservation of mouse and human embryos, and to find the optimal protocol for embryo freezing. Methods: Human embryos derived from fertilized eggs showing 3 pronuclei (PN) and mouse embryos were divided into two groups respectively: dehydrated with 1.5 M EG + 0.2 M sucrose or 1.5 M PROH + 0.2 M sucrose using the slow freezing method. Moreover mouse embryos were controlled the exposure time of cryoprotectant during dehydration or rehydration steps. Results: The survival rates of human embryos were 79.2% (84/106) in EG group and 77.9% (88/113) in PROH group. In mouse embryos, the survival and development rates up to blastocyst were 70.6% (245/347), 44.1% (123/279) in EG group and 62.1% (198/319), 45.1% (123/279) in PROH group, respectively. However, in EG group, partially damaged embryos after thawing were decreased compared to PROH group. In combination group, when the exposure time during dehydration and rehydration were reduced, the survival and embryonic developments were increased slightly, but not significant. Conclusion: Cryopreservation of mouse and human embryos at cleavage stage by using EG or PROH exhibited no statistical difference in the survival rate and/or developmental rate to blastocyst. However, the use of EG for cryopreservation of embryos might reduce the exposure time of the cryoprotectant because of a high permeation of EG and result in lessen its toxic effects.

FMCW 레이더 거리 도플러 맵 실시간 디지털 신호처리 FPGA 구현 기법 연구

김태형(Tai Hyung Kim) 한국항공우주학회 2021 한국항공우주학회 학술발표회 논문집 Vol.2021 No.11

요추부 한 분절 유합술에서 생존 분석을 이용한 인접 분절 퇴행성 변화로 인한 재수술률 평가

김태형(Tae-Hyung Kim),김진혁(Jin-Hyok Kim),김성수(Sung-Soo Kim),임동주(Dong-Ju Lim),한정일(Jung-Il Han),김태완(Tai-Wan Kim),석세일(Se-Il Suk) 대한정형외과학회 2010 대한정형외과학회지 Vol.45 No.4

목적: 요추부의 한 분절 유합술 후에 발생된 인접 분절 퇴행성 변화에 시행된 재수술에 따른 생존율을 분석하고 그에 관여하는 요인을 알아보고자 하였다. 대상 및 방법: 1997년 3월부더 2006년 12월까지 본 척추센터에서 한 분절 유합술을 시행한 총 1,447예 중 추적 기능했던 1,206예를 대상으로 후향적으로 분석하여 인접 분절 퇴행성변회로 인한 재수술에 대한 생존분석을 시행하였다. 수술 시 나이, 성별, 진단명, 유합의 방법, 유합 부위, 골유합의 재료, 수술 집도의, 비만도(BMI), 흡연 여부 등에 따른 생존에 대한 단 인자 및 다중 인자분석을 시행하였다. 결과: 총 1,206예 중 인접 분절의 퇴행성 변화로 본원에서 재수술을 했던 경우는 27예였다(2.24%). 평균추시 기간은 39.0개월(6개월-12년 6개월)이었으며 수술 시 평균나이는 47.0세(13-85세)였다. 5년 생존율은 97.3%였으며, 10년 생존율은 89.4%였다. 수술 당시의 나이는 50세를 기준으로 나누어 분석한 결과 50세 미만의 재수술률이 유의하게 낮게 나타났으며(P=0.002), 다른 부위보다 제 4-5 요추 부위를 유합하였을 때 재수술률이 유의하게 높게 분석되었고(p=0.003), 과체중 및 비민인 경우(BMI 25 이상) 재수술률이 의미 있게 높았으며(p=0.040), 후외측 유합술만 시행한 경우보다 후방 요추체 유합술을 함께 시행한 군에서 재수술률이 의미 있게 낮게 분석되었다(p=0.021). 성별, 원인 질환, 골 유합의 재료, 수술 집도의, 흡연 여부에 따른 차이는 재수술률에 유의한 차이를 보이지 않았다(ps>0.05). 다중 인자 분석에서는 나이에 따른 요인만이 유의한 의미를 가졌다(p=0.048, Hazard ratio=2.50). 결론: 생존 분석 결과 요추부 한 분절 유합술에서 인접 분칠의 퇴행성변화로 인한 재수술 없이 생존하는 데에 가장 중요한 인자는 수술 당시의 나이임을 알 수 있었다. 50세 이상의 환자의 경우, 단 분절 유합술이라도 인접 분절 질환이 발생할 수 있음을 술 전에 인지시킬 필요가 있을 것으로 사료된다. Purpose: To analyze survival rates of patients after mono-segmental lumbar or lumbosacral fusion and to evaluate factors affecting the revision operation due to adjacent segmental degeneration. Materials and Methods: This study enrolled 1,206 patients who had mono-segmental lumbar or lumbosacral fusion between March 1997 and December 2006 at the Seoul Spine Institute. The survival rates for the revision operation due to adjacent segmental degeneration were analyzed retrospectively. The age at index operation, sex, etiologic diagnosis, fusion method, fusion level, substance of bone graft, operator, body mass index (BMI), and smoking were considered as risk factors for the revision operation. Results: There were 27 patients with a revision operation for adjacent segmental degeneration (2.24%). The average follow-up period was 39.0 months (6 months to 12 years 6 months) and the average age at operation was 47.0 years (13 to 85 years). The survival rate at 5 years was 97.3%, and at 10 years it was 89.4%. Patients less than 50 years old had a significantly lower revision operation rate than those aged 50 or more (p=0.002). When fusion between the 4th lumbar and the 5th lumbar spinal vertebrae was done, the revision operation rate was significantly higher than for other levels (p=0003). Obese patients with BMI≥25 had a significantly higher revision rate than did patients with BMI<25 (p=0.040). In a comparison of circumferential fusion versus other types of fusion, circumferential fusion had a lower revision rate and the difference was significant (p=0.021). Other factors such as diagnosis, sex, surgeon, substance used for the bone graft, and smoking were not significant for revision rate (ps>0.05). In multivariate analysis, age alone was a significant risk factor (p=0.048, Hazard ratio=2.50). Conclusion: The most important factor for survival without revision surgery for adjacent segmental degeneration following instrumented mono-segment lumbar or lumbosacral fusion is the age at index operation. Patients 50 year-old or older should be informed of the possibility of adjacent segmental disease after instrumented mono-segment lumbar or lumbosacral fusion.

상업스포츠센터의 관계혜택과 관계의 질 및 센터에 대한 충성도와의 구조적 관계

김태형(Tai Hyung Kim) 한국사회체육학회 2009 한국사회체육학회지 Vol.0 No.36

스키 리조트의 물리적 환경과 고객만족, 경영성과와의 PLS 경로모형 분석

김태형(Kim Tai-Hyung),조태수(Cho Tae-Soo) 한국체육과학회 2011 한국체육과학회지 Vol.20 No.3

The aim of this research is to provide the data basic to smooth business development of a ski resort with the implementation of the analysis of validity, reliability, analysis of factorial correlation and analysis of covariance structural analysis of the relationship between physical environment, customer satisfaction, and business performance, which a ski resort currently has among the multilateral factors for achieving the business performance of a ski resort, using SPSS 12.0, Microsoft Excel 2007, and Smart PLS 2.0 program. In the study conducted aiming for such a purpose, this research drew the results as follows: First , the physical environment of a ski resort was found to have a positive(+) effect on customer satisfaction; second, the physical environment of a ski resort was found to have a positive(+) effect on business performance; third, customer satisfaction was found to have a positive(+) on business performance. What can be known from such results is that the physical environment of a ski resort has a positive effect on customer satisfaction and also has a direct effect on business performance. In addition, the results reveal that the physical environment of a ski resort becomes a motive for a ski resort to enhance their business performance by promoting customer satisfaction. Accordingly, it is judged that when a ski resort, with the perception that physical environment can produce positive performance, can have steady management and changes to form much better environment than the present level, it can possibly achieve much higher business performance.

대학생의 스포츠 스타이미지와 스포츠 태도의 관계

김태형(Kim Tai-Hyung),김인호(Kim In-Ho) 한국체육과학회 2008 한국체육과학회지 Vol.17 No.4

The purpose of this study was to describe the relations between university students' sports star image and sports attitude scientifically and provide prerequisite tips to build university students' decent sports attitude and to enhance socialization through measured data. The 550 students of university in C-do, were asked to answer the questionnaire based on former studies. The data were dealt with one way analysis of variation(ANOVA), correlation analysis and multiple regression analysis. First, there was a meaningful difference in university students sports star image according to gender, age, major, economic living standard, the residential district. That is, male students showed higher sports star image rate than female ones and age was in order of over 26age, 19~21age, 22~23age, 24~25age and department was in order of the art?physical fitness, the humanitiesㆍsociety, naturalㆍscience and economic living standard was in order of high, low, middle and the residential district was in order of large city, middle city, countryside. Secondly, there was a meaningful difference in university students sports attitude according to gender, age, major. But it had nothing to do with economic living standard, the residential district. That is, male students showed higher sports attitude rate than female ones and age was in order of over 26age, 19~21age, 22~23age, 24~25age and department was in order of the artㆍphysical fitness, the humanities?society, naturalㆍscience. Finally, there was a low level of correlation between sports star image and sports attitude in general. In the type of sports star image, the external image and performance image had a positive influence on sports attitudes. The progressive image had a positive influence on individual attitude but had a negative effect on social attitude and mental attitude. The moral image had a positive influence on social attitude and individual attitude, but had a negative effect on mental attitude.

리조트개발과 지역사회와의 관계

김태형(Kim Tai-Hyung),서일한(Seo Il-Hwan) 한국체육과학회 2008 한국체육과학회지 Vol.17 No.4

Many countries and regions consider travel development as a tool of local development. As 5-day workweek and 5-day class in schools have been settled down, people get interested in leisure and recreation. The moderners for use of free time, the companies for expanding their business, and a local self-goverment for securing the local tax and revitalization of the regional economy are interested in development of resorts. Examining the perception, opinion, development direction of the local self-government and satisfaction with business, the purpose of this study was to determine factors affecting an economic, a sociocultural, and an environmental effect and understand an economic impact of developed resorts by comparing and analysing similar cases of other resorts. To this end, a total of 500 usable data were collected from local residents (N=650) in the area where the integrated resorts are developed. A total of 35 items were used including 6 items about demographic information, 15 items about perception, 14 items about the impact of resort development after examining validity of the instruments. The examination of the Cronbach's α indicated that all scales were deemed to be relatively reliable (perception=.821, revitalization of economy=.788, price stabilization=.662, cultural environment development=.804, public morals crime= 796, environmental impact=.883). Data were analyzed using the statistical package of SPSS for Window 12.0. Empirical analysis was conducted as a method of case analysis in order to figure out the economic impact of resort development analyzing the currently operated resorts. Following the aforementioned procedures, the results of this study were as follows. First, the relationship between perception of resort development business and an economic, a socio-cultural, and an environmental impact was significant. Second, there were factors that affects the perception of the resort development business and an economic, a socio-cultural, and an environmental impact.

아마추어 골프대회 참가자가 인식하는 만족도, 신뢰가 골프연습장 경영에 미치는 영향

김태형(Kim, Tai-Hyung),조태수(Cho, Tae-Soo) 한국체육과학회 2015 한국체육과학회지 Vol.24 No.4

This study is aimed at providing data necessary to efficient management of the competition for inspiring the event participants with a positive feeling by observing the fact that steadily increasing is the number of golf driving ranges, which are planning a golf tournament event in an effort to enhance the management efficiency in a driving range. Furthermore, this study intended to analyze the trust factors essential to the efficient management of a golf driving range through participant’s satisfaction. Through such research, this study put its aim at analyzing how the satisfaction & trust factors which are delivered to the participant can be reborn as positive requirements for the golf driving range management. To achieve such a purpose, this study, targeting the members of the golf driving range located at G city in Gyeongsangbukdo Province, selected the participants in the amateur golf tournament provided by the driving range for enhancing its management efficiency as a population from October to November in 2014. Particularly, this amateur golf tournament was conducted around the members of a driving range through the planning meeting between the golf driving range party, this researcher, and the golf course hosting the tournament in an effort to make the driving range members loyal customers, and this tournament was carried out under the agreement on the aims and purposes of this research between the above three parties; therefore, it can be confirmed that the research subject is conforming to the research objective. As for data processing, this study carried out hypothesis verification through validity analysis, reliability analysis, correlation analysis by factor, and covariance structure analysis using Smart PLS 2.0 M3 program, and deducted the results as follows: First, the results revealed that educational satisfaction perceived by a participant in the amateur golf tournament had a positive influence on the golf driving range management. Second, it was found that social satisfaction perceived by a participant in the amateur golf tournament had a positive influence on the golf driving range management. Third, the results indicated that physical satisfaction perceived by a participant in the amateur golf tournament didn’t have an influence on the golf driving range management. Fourth, the result showed that trust perceived by a participant in the amateur golf tournament had a positive influence on the driving range management.

하계시즌 리조트 이용자의 이용동기가 만족도에 미치는 영향

김태형(Kim Tai-Hyung) 한국체육과학회 2008 한국체육과학회지 Vol.17 No.1

This research investigated and analyzed difference of motivation for using depending on the vital statistical variance, difference of satisfaction depending on the vital statistical variance, interrelation between motivation for using and satisfaction, motivation for using had an effect to satisfaction, for research to concerning motivation for using and satisfaction. Based on this result, various leisure activities, wide leisure sports activities, to be offered the institution, we carried out research among at acquiring basic information. In order to attain an objective, from 2007 July until 2007 August, 402 visitors of Gangchon Summer season resort were selected whom were using it. As research tool, the questionnaire of Ragheb & Beard(1980), Iso-Ahola & Allen(1982), Lee, Chul-Hwa(1995), Park, Su-Jeong(1996), Kim, Yang-Rye(2000), Kim, Seong-Su(2001), Kim, Tae-Hyung(2002) was really used to execute two preliminary researches after amending and complementing, The investigation data which had become frequently used was processed through SPSS statistical program and the electric computer it controlled. Applying to the analysis of variance, an interrelation analysis and multiplex regression analysis in analysis objective of data and we got the same conclusion as follows ; It appeared that there is attentive relation between summer resort user's motivation for using and satisfaction. Entertainment among motivation for using affected psychological, recreational, environmental satisfaction and health-oriented had an influence on educational, physical satisfaction. Also social contact-oriented affected psychological, educational, recreational, social satisfaction. And self-developing had an effect on psychological, physical, environmental, social satisfaction.

스쿠버다이빙 참가자들의 준거집단의 기준이 구매행동에 미치는 영향

김태형(Kim, Tai-Hyung) 한국체육과학회 2016 한국체육과학회지 Vol.25 No.5

The purpose of this study was to investigate the effect of scuba diving participant’s product involvement and purchasing behavior on repurchase intention and recommendation intention. For the research, 298 scuba divers were used as sample. For data analysis, PASW Statistics 18.0 was used for frequency analysis, exploratory analysis, reliability analysis using Cronbah’s α and multiple regression analysis. And the results are as follow. First, sub factors of involvement, “personal preference involvement” and “product attribute involvement” had no influence on repurchase intention and recommendation intention. Second, ostentation consumption, conformity standard, one’s uniqueness of purchasing behavior had influenced on repurchase intention. Third, ostentation consumption, conformity standard, one’s uniqueness of purchasing behavior had influenced on recommendation intention.