유기질비료의 표층 및 전층시비에 따른 벼 수량 변화

김현우,최현석,김병호,김홍재,최경주,정덕영,이연,박광래,정석규,Kim, Hyun-Woo,Choi, Hyun-Sug,Kim, Byeong-Ho,Kim, Hong-Jae,Choi, Kyeong-Ju,Chung, Doug-Young,Lee, Youn,Park, Kwang-Lai,Jung, Seok-Kyu 한국유기농업학회 2012 韓國有機農業學會誌 Vol.20 No.1

벼 유기재배를 하는데 있어서 전층과 표층 시비방법에 따른 토양의 화학성, 물리성, 미생물상, 그리고 벼의 생육과 수량에 대해서 어떠한 영향을 미치는 지를 구명하기 위해서 수행하였다. 2008년부터 2010년까지 3년간에 걸쳐서 전라남도농업기술원 시험포장(논, 양토)에서 조사하였고 시험품종은 '동진1호'를 이용하였다. 토양유기물은 표층시비에서 높았고 토양양이온은 전층시비에서 높았다. 유기질비료의 질소 무기화율은 표층시비에서 높았고 잔존하는 시기별 토양 유기물함량도 표층시비에서 높은 경향을 나타내었다. 토양물리성은 전층시비에 의해서 향상되는 경향을 보였고, 토양 미생물상은 전체적으로 표층시비에서 높았다. 표층시비구가 전층시비보다 5%의 수량이 증수되는 특성을 보였다. This study was investigated to evaluate the effects of fertilizer application of surface and broadcast for rice culture on the soil chemical, physical, and microbial properties as well as growth and yield of rice. The application was made with 'Dongjin 1' rice at Jeollanam-do Agricultural Research & Extension Services from 2008 to 2010. Soil organic matter and cation concentrations were increased by surface and broadcast applications, respectively. Plots treated by surface application tended to be higher seasonal N-mineralization rate in the organic fertilizer and seasonal soil organic matter than those of broadcast application. Soil physical properties seemed to be improved by the broadcast application, and soil microbial properties were increased by the surface application. Surface application increased 5% of rice yield compared to that of broadcast.

FBG 광섬유센서가 내장된 7연 강연선을 이용한 포스트텐션 UHPC 교량의 긴장력 장기모니터링

김현우,김재민,최송이,박성용,이환우,Kim, Hyun-Woo,Kim, Jae-Min,Choi, Song-Yi,Park, Sung-Yong,Lee, Hwan-Woo 한국전산구조공학회 2015 한국전산구조공학회논문집 Vol.28 No.6

이 연구에서는 FBG센서가 내장된 강연선을 포스트텐션 UHPC 교량(길이 11.0m, 폭 5.0m, 높이 0.6m)에 적용하고 약 1년간의 긴장력 장기모니터링 결과를 정리하였다. 그리고 초기 도입 긴장력과 차량재하시험을 통하여 콘크리트 내부 강연선의 긴장력 변화를 계측하고 계측결과에 대한 분석을 수행하였다. 연구결과, 이 연구에서 제안하는 콘크리트 내부 긴장력 측정방법이 공영 중인 교량에서 외력으로 인한 콘크리트 내부의 작은 프리스트레스 변화를 효과적으로 측정할 수 있음을 알 수 있었다. 아울러 장기 계측결과를 이용하여 응력변화에 의한 유효변형률을 정확하게 얻기 위해서는 온도보정에 사용되는 열팽창계수의 선택이 매우 중요함을 알 수 있었다. This paper presents results of one-year monitoring on prestressing force of a 7-wire steel post-tensioning strand which is installed in a UHPC(ultra high performance concrete) bridge with 11.0 m long, 5.0 m wide, and 0.6 m high by using a FBG-encapsulated 7-wire steel strand. The initial prestressing forces and the prestress changes during a vehicle load test were measured using the FBG-encapsulated strand. The results show that the FBG-encapsulated 7-wire strand is very effective for monitoring the prestress forces even the change in the tension force is very small. Additionally, it was indicated that selection of the thermal expansion coefficient which is used for the temperature correction shall be carefully carried out.

치과 임프란트에 대한 일반인의 인식도에 관한 설문조사 연구

김현우,박상수,김우택,조남성,박양호,박준우,이건주,Kim, Hyun-Woo,Park, Sang-Soo,Kim, Woo-Taek,Cho, Nam-Sung,Park, Yang-Ho,Park, Jun-Woo,Rhee, Gun-Joo 대한구강악안면외과학회 2001 대한구강악안면외과학회지 Vol.27 No.4

The techniques of the dental treatment are well known to common people, but the dental implant as one of the treatment options to rehabilitate patient's mouth is little known to them. Taking these situation into consideration, we, writers made actual analyses of statistics by putting into the form of diagrams based on questionnaires. Three hundreds of common people over 20 years old were picked up and we used convenience sampling method which is one of nonprobability sampling methods. Statistics are about these questions. 1. How much common people know about dental implant as a treatment option. 2. How much common people know about the detailed portions of the dental implant for rehabilitaton. 3. How common people got to know the dental implant. We present actual answers of the common people.

신체형 동통장애 환자의 정신치료 경험

김현우,이현제,Kim, Hyun-Woo,Lee, Hyun-Je 한국정신신체의학회 1994 정신신체의학 Vol.2 No.1

The authors tried to look into the process of the individual psychotherapeutic experience of a 18-year-old male diagnosed as somatoform pain disorder or chronic pain syndrome. The patient had showed strong resistance to acceptance of his psychological problems. Some issues such as indications of psychotherapy for chronic pain, changing the mode of the treatment some problems around changing the therapist secondary gain and parents' attitude were discussed considering their relatedness to the outcome. The psychotherapy had lasted about 2 years and the result was estimated as fair.

건설엔지니어링 기업경기실사지수 개발에 관한 연구

김현우,진경호,이교선,김미리,Kim, Hyun-Woo,Chin, Kyung-Ho,Lee, Kyo-Sun,Kim, Mi-Ri 한국건설관리학회 2012 한국건설관리학회 논문집 Vol.13 No.6

최근 가파른 성장세를 기록하고 있는 고부가가치 산업인 건설엔지니어링 산업을 미래지향적인 산업으로 바라보는 시각이 많아졌다. 하지만 타 산업분야에 비해 경기 동향을 분석할 수 있는 체계가 미흡한 실정이다. 따라서 본 연구에서는 건설엔지니어링 기업을 대상으로 하는 기업경기실사지수 모델을 개발하여 2011년 4/4분기와 2012년 1/4분기에 대한 경기 동향을 조사하고 주요 특징을 분석하였다. 건설엔지니어링기업 경기실사지수(CEBSI)는 자금부문, 인력부문, 채산성, 수주규모, 국내외 시장현황, 경영 애로사항, 정책개선 등 기업 경기상황을 정확히 판단하기 위한 지표로 구성되었다. CEBSI는 향후 건설엔지니어링 산업뿐만 아니라 전체 건설 산업의 경기현황 및 전망자료로 활용되어 체계적이고 정확한 정책을 수립할 수 기초 자료로 활용될 것이다. Currently, construction engineering industry of high value and rapid growing has been viewed as a future oriented industry. Thus, compared to other industries, its analysis system for business trend seems insufficient. This research has developed a business survey index model targeted for construction engineering industries, and business trends for 4/4 quarter of 2011 as well as 1/4 quarter of 2012 were surveyed as important traits were analyzed. Business Survey Index of Construction Engineering has been constructed in form of an index in order to accurately judge different economic states of the industry such as funding areas, human resources, payability, ordering scale, status of domestic and foreign markets, Difficulties in Management, and improvements in policies. In the future, CEBSI will not only be applied on the construction engineering industry, but it will also be used as the economic state of all construction industries as well as the prospect data. Thus, it will be utilized as basic resources that can establish systematic and accurate policies.

폐경기 증후군의 사회심리적 측면

김현우,Kim, Hyun-Woo 한국정신신체의학회 1996 정신신체의학 Vol.4 No.1

Regarding menopause as a turning point in woman's lift, the author reviewed the psychosocial aspects of menopause. Seeing menstruation as the symbolic meaning of female sexuality, psychoanalysts argue that menopause, the loss of symbolic meaning of female sexuality, may bring a mourning reaction to woman. It is reported that the high ratio of depression does not have a serious relationship with the menopause syndrome, and that depression cannot be viewed as a different symptoms. It is also proved that most women successfully recover themselves from temporary menopause symptom. Research data shows that some women have a negative thought on the meaning of menopause. Others, however, have a positive concept on the meaning of menopause because of the feeling of release and freedom. In sum, the author suggests that psychosocial consideration is very important as much as bilogical consideration in considering the meaning of menopausal syndrome.

종합병원간호사의 조직효능감, 자기효능감, 간호전문직이 조직몰입에 미치는 영향

김현우,박은희,Kim Hyun Woo,Eun Hee Park 대한산업경영학회 2023 산업융합연구 Vol.21 No.7

The purpose of this study was designed to help the operation of the hospital organization through analysis of factors influencing organizational commitment of general hospital nurses. 129 nurses in general hospitals were targeted in G City. This study was conducted to analyze the effects of group efficacy, self-efficacy, and nursing professionals on organizational commitment. T-test, ANOVA, Pearson's correlation coefficient, Descriptive statistics and multiple regression were used. Stepwise regression analysis found that organizational commitment was affected by group efficacy(β=0.240, p =.003), nursing professionalism(β=0.229, p =.004) and daytime work(β=0.249, p =.003), The F statistic was 10.478 (p <.001). Therefore, in order to improve organizational commitment, it will be necessary to prepare communication programs and cooperation programs per unit to improve collective efficacy. In addition, it is necessary to improve the system, such as a system dedicated to night workers, so that the working hours of nurses in general hospitals can be maintained constant. In addition, it is necessary to develop a support program so that nursing professionals do not decrease due to disappointment in reality in the nursing field.

소규모 기독교 대학의 서비스러닝 질적사례 연구: 서비스러닝 효과와 학습정서를 중심으로

김현우,이정미,Kim, Hyun Woo,Lee, Jeong Mee 한국기독교교육학회 2022 기독교교육논총 Vol.- No.71

This study tried to explore the ways to operate service learning more effectively by analyzing the educational effects of service learning and changes in learning sentiments that appeared in the service learning operation process established for the realization of the Christian educational philosophy at a small local Christian university. The analysis was conducted using NVivo11, focusing on the reflection journals of students who participated in service learning in the first semester of 2022 at J University. As a result of the study, through service learning, personal competence growth, self-reflection and will to change, self-esteem and self-efficacy, social and civic aspects, social responsibility enhancement, community (community) empathy and awareness of participation, and helping others There were educational effects such as an increase in the breadth of understanding. In addition, learning emotions that appeared in the service learning process included positive emotions such as gratitude, challenge recognition, pride, confidence, and responsibility, and negative emotions such as worry (difficulty), upset, regret, and awkwardness. It is a measure to increase the educational effect based on the learning emotion shown in the service learning process. When operating service learning, the service period at the visiting institution is increased to 6 weeks or more, and based on close interaction and detailed analysis of the educational environment in the planning stage, Suggest to develop and operate a plan. In addition, if you have the opportunity to receive feedback from your professors and colleagues through demonstrations and mock presentations in the classroom before visiting the institution, and finally have the opportunity to visit the institution again after the results of service learning are announced, more quality service learning education will be operated. Based on the results of this study, it is expected that more valuable and meaningful service learning education opportunities will be provided to learners by designing and operating a practical and sophisticated service learning curriculum.

다중매개모델에서 bootstrapping기법을 이용한 흡수능력의 매개효과 분석

김현우,이홍배,신용호,Kim, Hyun-Woo,Lee, Hong-Bae,Shin, Yong-Ho 한국시뮬레이션학회 2015 한국시뮬레이션학회 논문지 Vol.24 No.4

매개효과 검정기법으로 널리 사용하고 있는 Baron and Kenny 접근법, Sobel, Aroian, Goodman 검정법들의 통계적 검정력이 약할 뿐만 아니라, 정확하지 않다는 비판이 대두되면서, bootstrapping 기법이 대안으로 제시되고 있다. 이에 본 연구는 bootstrapping 기법을 토대로 세 개 이상의 변수로 구성된 다중매개모델에서의 매개효과 검정을 위해 가상의 phantom 변수를 도입하여 검정하였다. 특히, 경영전략분야의 자원기준관점 연구에서 진행되고 있는 조직자원과 매개변수 흡수능력, 그리고 기술사업화역량 관계 모델을 다중매개모델로 설정하여, bootstrapping 접근방법과 phantom 변수 설정을 통해 총간접효과 크기와 유의확률을 계산하고, 흡수능력의 매개효과를 검정하였다. 검정결과 매우 효율적이고, 체계적인 매개효과 검정이 가능하였음을 확인할 수 있었으며, 인적자원과 물적자원의 자원 특성에 따라 흡수능력의 매개 특성도 차이가 있음을 확인하였다. The mediation methods suggested by Baron and Kenny, Sobel, Aroian and Goodman, have widely used to test the mediating effect. However, as there are many problems in statistical test power, as well as statistical accuracy, a bootstrapping technique has been suggested as an alternative. In this paper, we adopt the phantom variables based on the bootstrapping technique to test the mediating effect in multiple mediator model consisting of three or more mediating variables. In particular, we formulate the multiple mediator model for analyzing the relations among organizational resources, the absorption capacity as mediating variables and technology commercialization capabilities. And using the bootstrapping approach, we analyzed the mediating effect of the absorption capacity by setting of phantom variables and calculated total indirect effect size and the statistical significance. The empirical results are as follows. First, we confirmed that the bootstrapping approach and the phantom variable is the very efficient and systematic mediation method. Second, we recognized that there is a difference in the mediating characteristics of the absorption capacity depending on the resource characteristics of human resources and material resources obviously.

pH와 삼투압 변화가 정자운동성에 미치는 영향

김현우,김세철,Kim, Hyun-Woo,Kim, Sae-Chul 대한생식의학회 1993 Clinical and Experimental Reproductive Medicine Vol.20 No.1

To maintain a good sperm motility is one of the key factors for the successful artificial insemination in retrograde ejaculation, and the sperm motility has been shown to be affected by various environmental factors, including change in pH and osmolarity. Herein we have analyzed the effect of change in pH and osmolarity in urine and normal saline on sperm motility by Sperm Quality Analyzer and Makler counting chamber. Semen, which sampled by masturbation from a 28 year old male and showed normal finding on semen analysis, was used for this study. The results were as follows: 1. When osmolarity was fixed to 300mOsm, pH did not show a definite effect on the sperm moility. However, the motility was generally a bit better in alkaline urine and saline than in acid, particularly than in pH 5.0. 2. When pH was fixed to 7.5, sperm motility was best in urine and saline of 300mOsm. Hyperosmolarity had more adverse.effect on the motility than hypoosmolarity. 3. The sperm motility was worse in the urine than in saline under the same pH and osmolarity. In conclusion, osmolarity has a definite effect on sperm motility, where as pH has relatively little effect. And certain components of urine other than pH and osmolarity might affect the sperm motility.