신재생에너지 확산에 따른 장기적 전력 수급 균형 분석

임승재(Lim, Seung Jae),김진호(Kim, Jin Ho) 대한전기학회 2022 대한전기학회 학술대회 논문집 Vol.2022 No.4

델파이 기법을 활용한 프로배구 미래경영전략

임승재 ( Lim Seung-jae ),이정학 ( Lee Jeoung-hak ),이은정 ( Lee Eun-jung ) 한국체육학회 2020 한국체육학회지 Vol.59 No.6

본 연구는 델파이 기법을 활용하여 프로배구에 대한 전문가의 경험과 견해 등을 통해 미래 예측, 불분명한 문제를 파악하고 프로배구 발전 방향을 모색하여 프로배구의 인지도 향상 및 활성화를 위한 목적이 있다. 이를 위해 프로배구와 관련된 전문가를 대상으로 총 2차에 걸쳐 조사를 진행하였다. 전문가 집단으로는 프로배구 협회 임직원 7명, 구단 임직원 7명, 감독 및 코치 7명, 학계 7명 총 28명으로 구성하였으며, 경력은 최소 7년 이상인 전문가를 대상을 선정하였다. 연구 결과, 첫째, 행정요인에서는 행정 부처 간 협력체계 구축이 1순위로 나타났다. 둘째, 정책요인에서는 현장 중심으로 한 중장기 발전계획 수립이 1순위로 나타났다. 셋째, 재정요인에서는 다양한 스폰서 유치가 1순위로 나타났다. 넷째, 지도자 요인에서는 분야별 전문지도자 확보가 1순위로 나타났다. 마지막 다섯째, 마케팅요인에서는 스포테인먼트가 마케팅 1순위로 나타났다. 따라서 본 연구의 결과가 프로배구활성화를 위한 미래경영전략의 기초자료가 되기를 기대한다 This study applies the Delphi method to forecast future trends, identify indistinct problems, and explore areas of improvement in the field of professional volleyball based on expert insight. Ultimately, the study aims to raise awareness and vitalize the sport. To this end, two sets of surveys were conducted targeting experts in the professional volleyball industry. The panel consisted of 28 experts, including 7 senior board members of the Professional Volleyball Association, 7 executives of professional teams, 7 professional coaches, and 7 academics relating to the field. Only those with 7 or more years of experience in the field were selected as part of the panel. The findings of the study are as follows. First, among administrative factors, establishing a system of cooperation between different administrative wings of organizations was ranked first. Second, among policy factors, enacting field-based, mid to long-term development plans was ranked first. Third, among financial factors, attracting diverse sets of sponsors was ranked first. Fourth, among leadership factors, securing leaders with expertise in each field was ranked first. Lastly, among marketing factors, “sportainment” was ranked first. Therefore, the findings of this stud

질소 적용이 금잔디 성장에 미치는 영향 평가 및 최적 질소 적용률 설정

임승재 ( Seung-jae Lim ),최문진 ( Mun-jin Choi ),김영선 ( Young-sun Kim ) 한국환경농학회 2023 한국환경농학회 학술대회집 Vol.2023 No.0

Nitrogen (N) is an essential element for Zoysia matrella growth, and its application rate was not established in the Z. matrella. This study was conducted to evaluate the effect of the N application rates on growth and establish the optimum nitrogen application rate for Z. matrella. Treatments were as follows; control (0 N g/㎡/month), 1N (1 N g/m2/month), 2N (2 N g/㎡/month), 3N (3 N g/㎡/month), 4N (4 N g/㎡/month), and 5N (5 N g/㎡/month). Turfgrass visual quality was improved by the N application. Clipping yield increased by 90~194% in all N treatments than that of control. As compared to control, the grass shoot weight in the 3N, 4N, and 5N treatments increased by 52%, 43%, and 111%, respectively, and the stolon weight in the 4N and 5N treatments increased by 412% and 201%. The N uptake amount and N recovery rate were to be 4.10~6.28 g/m² and 14~58%, respectively. These results indicated that considering growth factors like visual quality, clipping yield, N uptake amount, and N recovery, the application rate of 2~3 N g/m2/month was suggested to be suitable for Z. matrella production.

Second-Generation Metal-on-Metal Total Hip Arthroplasty

Seung-Jae Lim(임승재),Young-Wan Moon(문영완),Jeong-Gyeong Son(손정경),Youn-Soo Park(박윤수) 대한정형외과학회 2005 대한정형외과학회지 Vol.40 No.5

목적: 제 2세대 금속-금속 관절면을 이용한 고관절 전치환술의 단기 추시 결과를 보고하고자 한다. 대상 및 방법: 2000년 4월부터 2002년 3월 사이에 현대적 금속-금속 관절면을 이용한 일차성 고관절 전치환술을 시행 받은 환자 중 2년 이상 추시가 가능하였던 165명 169예의 고관절을 대상으로 하였다. 모든 환자에서 임상적 및 방사선적 평가를 시행하였다. 결과: Harris점수는 수술 전 평균 53.9점에서 최종 추시 평균 94.2점으로 향상되었다. 모든 삽입물에서 골침습성 고정을 확인할 수 있었다. 9명(10예)의 환자에서 대퇴골 대전자부에 국한된 골용해 소견을 보였다. 골용해 소견이 있는 환자들은 대조군에 비해서 코발트에 대한 피부 패치 검사 양성 반응률이 높게 나타났다(p=0.03l). 2명의 환자에서 각각 재발성 탈구와 대전자부 병적 골절의 위험성 때문에 재수술을 시행하였다. 회수된 삽입물들에 관절면의 마모소견은 없었으나, 삽입물 주위 조직에 대한 현미경 검사에서 지연형 과민반응에 해당되는 조직 소견이 관찰되었다. 결론: 현대적 금속-금속 관절 디자인을 이용한 고관절 전치환술의 단기 추시 결과는 대부분의 환자에서 고무적이었으나, 금속에 대한 알레르기 반응의 과거력이 있는 환자들에게는 삽입을 피해야 할것으로 사료된다. Purpose: To report the short-term results of second-generation metal-on-metal total hip arthroplasty (THA). Materials and Methods: One hundred and sixty-five patients (169 hips) were followed for more than 2 years after primary THA using a modem metal-on-metal bearing conducted between April 2000 and March 2002. All patients were examined clinically and radiographically. Results: The average Harris hip score improved from 53.9 points preoperatively to 94.2 points at the time of the last follow-up. All prostheses demonstrated radiographic evidence of bone ingrowth. Nine patients (10 hips) had an osteolytic lesion localized at the greater trochanter. Patients with osteolysis had a significantly higher rate of positive skin-patch tests for cobalt than controls (p=0.031). Of these, two hips underwent revision operation due to recurrent dislocation and imminent fracture through the greater trochanter, respectively. There was no evidence of metal wear on the retrieved bearing surfaces, but microscopic analysis of peri prosthetic tissues revealed abnormal histological findings consistent with delayed-type hypersensitivity. Conclusion: Early results of THA using the current metal-on-metal bearing design were encouraging in most of the patients. However, this implant bearing should be avoided in patients with a history of allergic reaction to metals.

차량 안정화 도달시간을 이용한 최적의 제어권 전환 요청 시간 결정

임승재(Seung Jae Lim),명노해(Rohae Myung) 대한인간공학회 2021 大韓人間工學會誌 Vol.40 No.6

Objective: The aim of this study is to show that by calculating the optimal take-over request lead time (TORlt) using the stabilization time, the stabilization time could be fully utilized in research on take-over and reflect the personal driving tendency that variables in the previous study could not perform. Background: In conditional automated driving, the driver is placed in an out-of-the-loop situation. In order to overcome this problem, it is necessary to take-over request, but there is no official definition of optimal TORlt. In previous studies, they suggested various optimal TORlts, but there is the common limitation that they did not reflect personal driving tendencies. The tendency of personal driving is well observed in longitudinal/lateral control during manual driving, and it is necessary to analyze the stabilization after take-over to see if the driving performance has reached the manual driving level. Method: A total of 46 subjects participated in the study. This study described a take-over situation due to the sudden appearance of obstacles during automated driving using an OpenDS simulator. After the take-over, the driver performed manual driving until it was determined that the vehicle had stabilized on its own. The driving performance related to vehicle stabilization was measured as the standard deviation of speed and steering wheel angle (SWA). Using these, individual stabilization standards and the stabilization time were measured. Four TORlts (3s, 7s, 10s, 15s) were used as independent variables, and one-factor within-subject ANOVA analysis and Fisher"s LSD post-hoc analysis were performed using longitudinal/lateral stabilization time and Dual stabilization time as dependent variables. Results: In lateral stabilization and dual stabilization, there was a significant difference in stabilization time according to the change in TORlts, which was classified into two groups: 3s and more than 7s. And the stabilization time decreased as TORlt increased from 3s to 10s. But when TORlt increased from 10s to 15s, the stabilization time increased again, which was in a U-shape. Conclusion: The optimal TORlt calculated using the stabilization time reflecting individual stabilization standards is about 10 seconds, which is similar to previous studies. Application: This means that the stabilization time can sufficiently replace the role of variables used in the previous take-over studies. In addition, since individual stabilization standards were applied and analyzed, there is a sufficient advantage in that it can reflect personal driving tendencies.

목표지향적 행동모형과 여가제약-협상 모형을 활용한 프로배구 관람객의 의사결정과정

임승재(Lim, Seung-Jae) 한국체육과학회 2021 한국체육과학회지 Vol.30 No.4

The purpose of this study is to verify the decision-making process of professional volleyball spectators using a goal-oriented behavior model and a leisure constraint-negotiation model, and to provide empirical basic data for efficient strategy establishment. First, it was found that attitude, positive anticipation, negative anticipation, and perceived behavioral control had a positive effect on aspiration, and subjective norms did not. Second, aspiration positively influenced behavioral intention. Third, perceived behavior controllability had no influence on behavioral intention. Fourth, intrinsic constraints, a sub-factor of leisure constraints, were found to have an effect on negotiation, and interpersonal constraints and structural constraints did not.Fifth, it was found that the aspiration of the goal-oriented behavior model had a significant effect on the negotiation. Sixth, it was found that negotiation did not affect the intention of action. Therefore, it is expected that the results of this study will be the basic data for the decision-making of professional volleyball visitors.

다발성 외상 환자에서 정맥혈전색전증의 예방

임승재 ( Seung Jae Lim ) 대한골절학회 2010 대한골절학회지 Vol.23 No.4

골프장의 서비스품질, 플로우, 재방문의도 간 관계

임승재(Lim, Seung-Jae),김기웅(Kim, Ki-Woong) 한국체육과학회 2021 한국체육과학회지 Vol.30 No.4

This study investigates the influence of service quality on flow by employing the concept of recall intention and provides basic data for come up with life long sports targeting toward golf course guest consumer. A survey was gievn out to people who was department of golf students in 3 different ranges, located in Gyeonggi area. Total 250 questionnaires were used as final validity sample. For data analysis, SPSS 21.0 and Amos 20.0 were used for frequency analysis, reliability analysis, correlation analysis, confirmatory analysis and structural equating model. Results are as follow: First, service quality influenced positively on flow. Second, flow influenced positively on recall intention. Third, service quality positively influenced on recall intention. Providing discriminatory and high services to establish effective marketing strategies in golf course management will make golf course visitors more immersed, which will lead to revisit and help revitalize golf courses.

바크하우젠 음향신호를 이용한 강재응력 측정

임남형(Lim, Nam-Hyoung),임승재(Lim, Seung Jae) 한국강구조학회 2023 한국강구조학회 학술대회 발표집 Vol.34 No.6

프로배구 경기장의 서비스스케이프가 지각된가치, 관람만족 및 재관람의도에 미치는 영향

하재필 ( Jae-pil Ha ),임승재 ( Seung-jae Lim ) 한국체육학회 2021 한국체육학회지 Vol.60 No.5

본 연구는 프로배구경기장의 서비스스케이프를 활용하여 프로배구 관람객의 지각된가치 관람만족 및 재관람의도에 미치는 영향을 확인하고 효율적인 전략수립을 위한 실증적 기초자료를 제공하는데 그 목적이 있다. 연구의 대상은 코로나로 인해 제한 관중, 무관중으로 인해 직접 설문을 받을 수 있는 여건이 되지 않아 각 구단의 팬카페를 통해 설문조사를 실시하였다. 설문은 편의표본추출법을 활용하여 총 350부의 설문지를 배포하였으며, 무응답, 일괄응답 등 불성실한 응답 36부를 제외한 총 314부의 설문지를 최종 유효표본으로 선정하였다. 자료처리는 SPSS 21.0 ver. 을 사용하였으며, 빈도분석, 탐색적 요인분석, 신뢰도분석, 상관관계분석, 다중회기분석을 실시하였다. 분석 결과 첫째, 프로배구 경기장의 서비스스케이프는 지각된 가치에 유의한 영향을 미치는 것으로 나타났다. 둘째, 프로배구 경기장의 서비스스케이프는 관람만족에 유의한 영향을 미치는 것으로 나타났다. 셋째, 프로배구 경기장의 서비스스케이프는 재관람의도에 유의한 영향을 미치는 것으로 나타났다. 넷째, 프로배구관람객의 지각된가치는 관람막족에 유의한 영향을 미치는 것으로 나타났다. 다섯째, 프로배구 관람객의 지각된가치는 재방문의도에 유의한 영향을 미치는 것으로 나타났다. 따라서 본 연구의 결과를 활용하여 구조물 및 시설물 개선을 통해 관람객 지각하는 이미지를 높이고 경기장 내의 편의시설 확충 및 다양한 서비스 제공하여 관람객들에게 만족을 줄 수 있어야 하며, 다양하고 정확한 정보제공을 통해 관중들이 다시 경기장을 찾게 할 필요가 있다. The purpose of this study is to use the servicescape of a professional volleyball stadium to check the effect on the perceived value of professional volleyball spectators on viewing satisfaction and re-watching intention, and to provide empirical basic data for effective strategy establishment.The subject of the study conducted a survey through the fan cafes of each club because it was not possible to receive the survey directly due to the limited audience and no spectators due to the corona virus.A total of 350 questionnaires were distributed using the convenient sampling method, and a total of 314 questionnaires were selected as the final valid sample, excluding 36 insincere responses such as non-response and lump sum responses. Data processing is based on SPSS 21.0 ver. was used, and frequency analysis, exploratory factor analysis, reliability analysis, correlation analysis, and multiple regression analysis were performed. As a result of the analysis, first, the service scape of the professional volleyball stadium was found to have a significant effect on the perceived value. Second, the service scape of the professional volleyball stadium was found to have a significant effect on the viewing satisfaction. Third, the service scape of the professional volleyball stadium was found to have a significant effect on the re-watching intention. Fourth, it was found that the perceived value of spectators of professional volleyball had a significant effect on spectators. Fifth, it was found that the perceived value of professional volleyball spectators had a significant effect on re-watching intention. Therefore, it is necessary to improve the perceived value of the audience through structural and facility improvement, expand convenience facilities in the stadium, and provide various and accurate information to make the audience visit the stadium again.