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신도시 주민의 공원 이용에 대한 만족도 분석에 관한 연구
박성용,김광식 한국행정연구원 2003 韓國行政硏究 Vol.12 No.2
본 연구는 분당·일산·평촌 신도시 지역의 주민들을 대상으로 공원이용에 대한 만족도를 조사한 것이다. 만족도에 대한 분석은 공원자원의 보전과 효용을 제고하고 물리적·기능적·사회적·심리적 요소에 대한 행태를 수용하여 공원이용에 대한 주민의 만족을 증대시키며, 향후 신도시개발에 필요한 공원조성을 위하여 실증적 자료를 제공하기 위하여 연구하였다. 분석결과 첫째, 전문가 중요도 조사결과는 안전성, 보건성, 쾌적성, 자연친화성, 편리성 순으로 분석되었다. 둘째, 요소별 중요도(가중치)의 비중은 기능적 요소, 심리적 요소, 물리적 요소, 사회적 요소로 조사되었다. 셋째, 신도시 주민의 공원이용에 대한 만족도 조사에서는 평촌, 일산, 분당 순으로 분석되었다. 끝으로 중요도의 비중에 대한 요인을 중심으로 다중회귀분석을 실시한 결과 결정계수가 일산(42%), 평촌(39%),분당(32%)순으로 분석되었다. 이러한 결과로 볼 때 신도시개발에 있어서 공원조성계획은 적절하게 이루어진 것으로 향후 공원조성 계획시 벤치마킹의 적용범위가 클 것으로 판단된다.
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지역난방 급탕공급 부하균등화를 위한 잠열축열조의 현장 적용
박성용,유호선,Park, Sung Yong,Yoo, Hoseon 한국플랜트학회 2021 플랜트 저널 Vol.17 No.2
지역난방의 운영적 측면에서 특정시간의 피크부하 완화를 통한 효율적인 열생산과 공급 및 지역난방 공급 중단 시 급탕 공급은 난방 대비 대체가 어려워 사용자 측면의 불편함과 공급자 측면의 애로사항을 해결할 수 있는 적용 기술이 요구되고 있다. 본 연구에서는 이러한 문제점을 해결할 수 있는 기술 중 열저장 능력과 급탕공급에 적합한 78℃급 수화물계 잠열축열조를 제작하여 지역난방 사용자 아파트 급탕공급설비에 현장 적용하였다. 본 시스템의 적용 결과 기존 공급방식 대비 급탕온도의 변화가 거의 없이 일정하게 사용자에게 공급됨을 확인하였으며, 피크 열부하는 평균 35% 감소와 비상열원으로서의 활용 가능성을 확인하였다. 또한 부하균등화에 따른 피크부하 감소로 기존 열 공급시설에서 10%의 열공급 여유와 신규 열공급시설 건설비용 및 열사용자의 공사비부담금이 각 5%와 10%가 감소됨을 확인하였다. In terms of district heating operation, efficient production and supply of heat by alleviating the peak load at a specific time require an application technology that can solve the inconvenience of the user and the difficulties of the supplier. In this study, a 78 ℃ class PCM heat storage tank suitable among the technologies that can solve these problems was manufactured and applied to the hot water supply facility for apartments in district heating users. As a result of the application of this system, it was confirmed that the supply temperature was constant to the user compared to the existing supply method. In addition, it was confirmed that the reduction of the peak load due to load equalization reduced the heat supply margin of 10% in the existing heat supply facility. And the construction cost of the new heat supply facility and the construction cost of heat users is decreased by 5% and 10%, respectively.
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朴成容 中央醫學社 1942 中央醫學 Vol.11 No.4
Since the Franch surgeon. Ambroise Pare reported two cases of diaphragrnatithernia in 1579. Dr. Walker did success of surgical correction. There after numerous cases were reported in both surgical and pathological aspect. Recently we experienced a case of traumatic diaphragmatic hernia with surgical ,correction. This patient was 38 years old male who has had penetrating gun shot wound on left lower chest which was treated an military hospital externally skin wound case. He come in our clinic for sudden onset of abdominal pain. Simple chest film showed small I bowel shadow in left chest cage. Operation; was performed thoraco-abdominal approach, which revealed distal part or jejunum and proximal part of ileum were herniated into left thorax through diaphragmatic defect approximated 8cm in length. Reposition of small bowel and closure of diaphragmatic defect were done without difficulty. Post operative progress was satisfactory.
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박성용,조종래,박상현 한국마린엔지니어링학회 2020 한국마린엔지니어링학회지 Vol.44 No.6
In naval vessel equipment, airborne and structure-borne noise are ultimately transmitted to the hull and then propagated in water, thus increasing their exposure to the enemy. The noise level is also a critical factor affecting the comfort of crew members. Airborne and structure-borne noise are strictly managed based on US Navy standards, with low vibration and noise as the basic quali-ties of naval vessel equipment. In this study, the causes of excessive vibration owing to the rotational motion of the motor and recip-rocating motion of the hydraulic pump in the hydraulic power unit were analyzed via a structure-borne noise test. A study on reduc-ing the structure-borne noise of the hydraulic power unit is conducted by altering the design of the hydraulic tank. A modal analysis of the hydraulic tank is performed to avoid the frequency that exhibits a high acceleration level in the structure-borne noise evalua-tion. A harmonic analysis is performed to verify the reduction in structure-borne noise. The effectiveness of the improved design change is verified by confirming that the acceleration level is reduced. Then, the vibration characteristics are identified using finite element analysis (FEA). It is confirmed that FEA is effective in reducing the structure-borne noise in the final test evaluation, thus validating the modified design.
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편도절제술을 받는 소아에서 Sevoflurane 마취 후 각성 흥분에 대한 Ketamine과 Fentanyl의 효과
박성용,곽현정,김종엽,김재형,김의석 대한마취통증의학회 2005 Korean Journal of Anesthesiology Vol.49 No.4
Background: Sevoflurane anesthesia is associated with emergence agitation in children. This study examined the effect of a single intraoperative dose of ketamine and fentanyl on emergence agitation in children undergoing an adenotonsillectomy. Methods: Ninety children, 3-10 years old, undergoing an adenotonsillectomy were enrolled in this study. The patients were randomly assigned to receive either normal saline (control group), ketamine 1 mg/kg (group K), or fentanyl 1μg/kg (group F) after inducing anesthesia. Ketorolac 0.5 mg/kg was used for postoperative analgesia, and the anesthesia was maintained with sevoflurane. The recovery characteristics, including the time to extubation, the discharge time from the PACU, agitation, pain, and vomiting were assessed. Results: There were no significant differences between the three groups regarding the time to extubation and discharge from the PACU. The incidence of emergence agitation in the control group, group K, and group F was 46.7%, 13.3%, and 33.3%, respectively. The incidence of emergence agitation and the pain score were significantly lower in group K than in the control group (P < 0.05). The incidence of vomiting was similar in the three groups. Conclusions: Children undergoing tonsillectomy with sevoflurane and 1 mg/kg of ketamine given after induction had a reduced incidence of emergence agitation without a delay in recovery. However 1μg/kg of fentanyl had no effect on the incidence of emergence agitation.
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