시스템 사고를 활용한 건축생산성향상 전략 수립에 관한 연구

김봉식,이윤선,홍정석,김재준,Kim, Bong-Sik,Lee, Yoon-Sun,Hong, Jung-Seok,Kim, Jae-Jun 한국건설관리학회 2008 건설관리 : 한국건설관리학회 학회지 Vol.9 No.6

최근 건설업은 국내 경기침체 및 규제강화로 인하여 위축되어 있다. 이를 해결하려는 방안으로 생산성의 향상에 대한 요구가 증하고 있으나, 제조업 등 다른 산업의 생산성향상을 위한 노력에 비하여 건설업은 미약한 실정이다. 하지만 건설업의 지역 환경조건, 다양한 공종 등 생산성에 큰 영향을 미칠 수 있는 요인이 많다는 것을 봤을 때 이러한 요인들의 특성을 이해하고, 상황에 맞게 활용 및 제어할 수 있다면 건축생산성은 향상 될 수 있을 것이다. 이에 본 연구는 건축 생산성 향상을 위해 설계 및 시공자의 시각으로 생산성 요인을 도출하여 그들의 관계 및 문제점을 시스템 사고를 통하여 분석하고 생산성향상을 위한 기회와 위협요인, 내 외부강점을 분석하여 생산성 향상 전략을 수립하였다. Recently, Construction market is contracted by economic slump and regulation. As the solution of this plan, construction productivity is gathering strength. However, the study on the productivity in construction section is insufficient until now. Construction section has many factor about productivity. The point of this study, we analysis the factor of construction productivity improvement and relationship with system thinking. And we show the strategy of construction productivity improvement.

6미터 이하 저고도 추락 환자의 안전성 여부

서영우 ( Young Woo Seo ),홍정석 ( Jung Seok Hong ),김우연 ( Woo Yun Kim ),안력 ( Ryeok Ahn ),홍은석 ( Eun Seok Hong ) 대한외상학회 2006 大韓外傷學會誌 Vol.19 No.1

Purpose: The committee on trauma of the american college of surgeons, in its manual resources for optimal care of the injured patients involved in falls from less than 20 feet need not be taken to trauma centers. Because triage criteria dictate less urgency for low-level falls, this classification scheme has demerits for early detection and treatment of serious problems in the emergency room. Methods: A prospective analysis was conducted of 182 patients treated for fall-related trauma from June 2003 to March 2004. Falls were classified as group A (<3 m), group B (≥3 m, <6 m), and group C (≥6 m). Collected data included the patient`s age, gender, site and height of fall, surface fallen upon, body area of first impact, body regions of injuries, Glasgow Coma Scale (GCS), Revised Trauma Score (RTS), and Injury Severity Score (ISS). Results: The 182 patients were classified as group A (105) 57.7%, group B (61) 33.5%, and group C (16) 8.8%. There was a weak positive correlation between the height of fall and the patients` ISS in the three groups (p<0.001). There were significant differences in GCS (p=0.017), RTS (p=0.034), and ISS (p=0.007) between group A and B. In cases that the head was the initial impact area of the body, the GCS (p<0.001) and the RTS (p=0.002) were lower, but the ISS (p<0.001) was higher than it was for other type of injuries. Hard surfaces as an impact surface type, had an influence on the GCS (p<0.001) and the ISS (p=0.025). Conclusion: To simply categorize patients who fall over 6 meters as severely injured patients doesn`t have much meaning, and though patients may have fallen less than 6 meters, they should be categorized by using the dynamics (impact surface type, initial body - impact area) of their fall. (K Korean Soc Traumatol 2006;19:54-58)

골반골 골절로 인한 동맥 파열로 동맥 색전술을 시행받은 환자에서의 생존 비교

김우연 ( Woo Youn Kim ),홍은석 ( Eun Seok Hong ),홍정석 ( Jung Seok Hong ),안력 ( Ryeok Ahn ),황재철 ( Jae Cheol Hwang ),김선휴 ( Sun Hyu Kim ) 대한외상학회 2008 大韓外傷學會誌 Vol.21 No.1

Purpose: This study was to evaluate the effect of arterial embolization on survival in patients with pelvic bone fractures and arterial bleeding. Methods: From January 2001 to December 2007, in all, 18 patients with pelvic bone fractures that had been treated with interventional arterial embolization were included in this retrospective study. The Injury Severity Score (ISS), the Revised Trauma Score (RTS), the initial hemodynamic status, the blood gas analysis, blood transfusion data, and mortality were the main outcome measurements. Results: Pelvic bone fractures were classified into lateral compression (LC), antero-posterior compression (APC), vertical shear (VS), and combined (CM) type according to the Young-Burgess classification. The Survivor group included 11 patients (61.1%), and the non-survivor group included 7 patients (38.9%). The mean ages for the survivor and the non-survivor groups were 40.0 and 45.6 years (p=0.517). The types of pelvic bone fractures were LC 11 (61.1%), APC 6 (33.3%), and VS 1 (5.6%): LC 7 (63.6%), and APC 4 (36.4%) in the survivor group and LC 4 (57.1%), APC 2 (28.6%), and VS 1 (14.3%) in the non-survivor group. The internal iliac artery was the predominant injured vessel among both the survivors (n = 5, 45.5%) and the non-survivors (n = 4, 57.1%). No differences in initial blood pressures, ISS, and RTS existed between the two groups, but the arterial pH was lower in the non-survivor group (pH 7.09 (±0.20) vs 7.30 (±0.08), p=0.018). The number of transfused 24-hour units of packed RBC was greater in the non-survivor group (24.1±12.5 vs 14.4±6.8, p=0.046). Conclusion: No differences in initial blood pressure and trauma scores existed between survivors and non-survivors with pelvic bone fractures, who had been treated with arterial embolization, but arterial pH was lower the in non-survivors.

국내 남동 해안지역의 음식물 관련 아나필락시스의 임상 양상

서민후 ( Min Hoo Seo ),김선휴 ( Sun Hyu Kim ),홍정석 ( Jung Seok Hong ),김우연 ( Woo Youn Kim ),최승원 ( Seung Won Choe ) 대한천식알레르기학회 2010 천식 및 알레르기 Vol.30 No.2

Background: Food-induced anaphylaxis accounts for the most proportion of the anaphylaxis treated at the emergency department. In Korea, reports regarding food-induced anaphylaxis are very few. Objective: The purpose of this study is to evaluate the general characteristics and clinical features of food-induced anaphylaxis in the southeastern coasted area of Korea. Method: A retrospective study was conducted on the patients visiting the emergency department at Ulsan University Hospital between 2000 and 2009. We reviewed patients` medical records diagnosed with food-induced anaphylaxis and other related diseases. Result: We identified 66 patients with food-induced anaphylaxis. The mean age of the patients was 41.9 years (SD±13.8). The inciting agent included seafoods in 29 cases (43.9%), wheat in 5 cases (7.6%), pork meat in 5 cases (7.6%), buckwheat in 2 cases (3.0) and cowmilk in 2 case (3%). Mucocutaneous manifestations were the most common, followed by respiratory, cardiovascular, gastrointestinal and neurologic manifestations in decreasing order of frequency. There were 32 patients (48.5%) with moderate anaphylaxis and 51.5 patients (51.5%) with severe anaphylaxis. There were no significant correlations between severity and epidemiologic factors including age, sex, comorbid disease and smoking. Conclusion: We found that seafoods are major causative agents of food-induced anaphylaxis in the southeastern coastal area of Korea. Therapeutic fluid was more frequently required, and the time from arrival at the emergency department to discharge was longer in patients with severe anaphylaxis. (Korean J Asthma Allergy Clin Immunol 2010;30:110-115)

외상후 복부 다발성 고형장기 손상

박형도 ( Hyung Do Park ),김선휴 ( Sun Hyu Kim ),이종화 ( Jong Hwa Lee ),홍정석 ( Jung Seok Hong ),홍은석 ( Eun Seog Hong ) 대한외상학회 2009 大韓外傷學會誌 Vol.22 No.2

Purpose: This study evaluated the characteristics and the prognosis of multiple intraabdominal solid organ injuries, including those to the liver, spleen, and kidney, after blunt trauma. Methods: From January 2001 to March 2009, 39 patients with multiple intraabdominal solid organ injuries, which had been confirmed by contrast-enhanced computed tomography after blunt trauma, were included in this retrospective study. The injury severity score (ISS), abbreviated injury scale (AIS), revised trauma score (RTS), American Association for the Surgery of Trauma (AAST) injury grade of solid organs, initial hemodynamic status, blood gas analysis, blood transfusion, and the mortality were the main outcome measurements. Results: Injured groups were classified into liver/kidney (n=17), liver/spleen (n=4), spleen/kidney (n=13), and liver/kidney/spleen (n=5) groups. Patients were older in the liver/kidney group than in the liver/kidney/spleen group (43 vs 18 years, p=0.023). The initial systolic blood pressures tended to be lower in the liver/kidney group than in the other groups (84 vs 105, 112, and 114 mmHg, p=0.087). The amounts of 24-hour packed RBC transfusion were 32 units in the liver/kidney group and 4 units in the liver/kidney/spleen group, but the difference was not statistically significant. Differences were found in neither the RTS, ISS, and AIS for head, chest, abdominal, and pelvic injuries nor the AAST injury grade for solid organ, but injuries to the chest were more severe in the liver/spleen group than in the spleen/kidney group (AIS 4.0 vs 2.8, p=0.028). Conservative treatment was the most frequent applied treatment in all groups. There were 6 mortalities: 3 due to hypovolemia, 2 to sepsis, and 1 to brain injury. Mortalities occurred only in the liver/kidney group. Conclusion: Patients who had intraabdominal solid organ injuries of the liver and the kidney simultaneously, tended to be transfused more at an early time after trauma, to have lower initial systolic blood pressures, and to have a higher mortality. (J Korean Soc Traumatol 2009;22:193-8)

액체호닝에 의한 금형 자동 사상기계 개발 및 가공 특성

김재도(Jae-Do Kim),류기덕(Kee-Deug Ryu),홍정석(Jung-Seok Hong) Korean Society for Precision Engineering 2000 한국정밀공학회지 Vol.17 No.6

시너(Thinner) 정주로 발생한 급성 폐질환 1례

이혜지 ( Hae Ji Lee ),최병호 ( Byung Ho Choi ),김미진 ( Mi Jin Kim ),홍정석 ( Jung Seok Hong ) 대한임상독성학회 2015 대한임상독성학회지 Vol.13 No.1

A 24 year-old man attempted suicide by injection of 1 cc of thinner into his left antecubital vein; 3 hours later, he visited our emergency room because of left chest pain. We suspected a chemical pneumonitis based on the abnormal findings of his chest X-ray and computed tomography. On the 3rd day after admission, a cellulitis also occurred at the injection area. His symptoms were relieved after supportive care for 2 weeks. There is significant experience with intoxication of thinner inhalation, whereas intoxication of intravenous thinner is rare.

내재된 둔상으로 인한 좌측 총 장골동맥 파열에 따른 출혈성 심정지 (질 내 경로를 통한 자위 행위로 인한 손상 의심): 증례보고

경규혁 ( Kyu Hyouck Kyoung ),김미진 ( Mi Jin Kim ),최병호 ( Byung Ho Choi ),홍정석 ( Jung Seok Hong ),홍은석 ( Eun Seog Hong ) 대한외상학회 2014 大韓外傷學會誌 Vol.27 No.4

A 34-year-old woman experienced a sudden cardiac arrest after complaining of abdominal pain. The cause of that serious event was a hidden hemorrhagic shock. On computed tomography of her pelvic area, we found that her left common iliac artery had been ruptured. No bone fractures were observed. Her angiography showed neither atherosclerosis nor an aneurysm of the artery. Because spontaneous ruptures of the common iliac artery are rare, we suspected, based on her husband’s statement, that a hidden blunt trauma to the artery had occurred via an endo-vaginal route due to dildo masturbation. Unfortunately, she died without recovery, in spite of our having controlled the bleeding by using an angiographic endovascular stent-graft. [ J Trauma Inj 2014; 27: 211-4 ]

소아 아나필락시스 상병등록의 적절성

조연주 ( Yeon Joo Cho ),김선휴 ( Sun Hyu Kim ),이혜지 ( Hyeji Lee ),최병호 ( Byungho Choi ),김미진 ( Mi Jin Kim ),홍정석 ( Jung Seok Hong ) 대한소아알레르기호흡기학회 2017 Allergy Asthma & Respiratory Disease Vol.5 No.3

Purpose: The aim of this study was to survey the accuracy of registration as anaphylaxis codes and the clinical characteristics of ana-phylaxis registered correctly and incorrectly in pediatric anaphylaxis. Methods: This study was conducted retrospectively using the medical records of patients under 15 years who visited a training hos-pital Emergency Department (ED) for 5 years. The study subjects were divided into the correct group (registered as anaphylaxis codes correctly) and the incorrect group (registered as other anaphylaxis related codes). Results: Of the 133 patients, 14 belonged to the correct group and 119 to the incorrect group. The median age of the correct group was 9 years old and that of the incorrect group was 2 years old. Sex, transportation to the ED, elapsed time from exposure to ED ar-rival, past history of allergy, causes of anaphylaxis except drug, severity of symptom, mental status, and antihistamine use were not different between the 2 groups. Drugs as the cause of anaphylaxis and cardiovascular/neurologic symptoms were more common in the correct group. Gastrointestinal symptoms were more frequent in the incorrect group. Intravenous fluid, steroid, bronchodilator, and epinephrine were more commonly used as the treatment for anaphylaxis in the correct group. The pediatric patients treated with epinephrine tended to be registered anaphylaxis correctly. Conclusion: More patients were registered incorrectly as other anaphylaxis-related disease codes rather than correctly as the anaphylaxis disease codes in pediatric ana-phylaxis. Epinephrine use was the associated factor for being registered correctly as the ana-phylaxis disease codes in pediatric anaphylaxis. (Allergy Asthma Respir Dis 2017:5:159-164)