수소연료전지자동차에 대한 안전기준 고찰

용기중,이광범,권해붕,Yong, Gee Joong,Lee, Kwang Bum,Kwon, Hae Boung 한국자동차안전학회 2014 자동차안전학회지 Vol.6 No.2

In the ongoing debates over the need to identify new sources of energy and to reduce the emissions of greenhouse gases. Hydrogen has emerged as one of the most promising alternatives due to its emissions from the vehicle being virtually zero. The governments have identified the development of regulations and standards as one of the key requirements for commercialization of hydrogen-fueled vehicles. Regulations and standards will helpful in overcoming technological barriers to commercialization. Developments of a technique for safety assessment of Hydrogen Fuel Cell Vehicle(HFCV) includes four tasks, research for regulation system and policy, hydrogen safety, vehicle operation safety and protection against high-voltage. The objective is to establish a technique for safety assessment and amend safety standards for HFCV and consequently reflect research results to vehicle management policy. We devised safety standards and evaluation techniques with regard to high-pressure gas and high voltage of hydrogen fuel cell vehicle. Korean Motor Vehicle Safety Standards(KMVSS) for HFCV was amended to June 10, 2014. including the results of the safety assessment technology for high-voltage and hydrogen characteristics.

자동차 제작결함조사 통계 분석을 통한 리콜제도 연구

송지현,권해붕,이광범,김희준,Song, Ji-hyun,Kwon, Hae-boung,Lee, Kwang-bum,Kim, Hee-june 한국자동차안전학회 2015 자동차안전학회지 Vol.7 No.4

The basic point of a vehicle recall is to remove vehicle defects as soon as possible and thus prevent possible road traffic accidents caused by the defects beforehand. Therefore, the core of vehicle recall under the self-certification system consists of a timely response and fast remedy of defects. The present study aimed to deduce a plan for improvement of the system necessary for the fast remedy of defects through a phased analysis of defect investigation procedure based on defect investigation statistical data. There will be a need to make the TSB(Technical Service Bulletin) or service campaign data submission of a manufacturer compulsory for the collection of broad defect information in the stage of information analysis and to impose a higher penalty when the manufacturer violates the data submission in the investigation stage. In addition, it is considered that an active service campaign should be induced and a punishment for late recall will be needed for consumer protection.

자동차용 강화유리와 그 시험방법에 대한 연구

안호순,권해붕,이광범,전상우,손영삼,Ahn, Ho-soon,Kwon, Hea-boung,Lee, Kwang-bum,Jeon, Sang-woo,Son, Young-san 한국자동차안전학회 2015 자동차안전학회지 Vol.7 No.3

Toughened glass is known to have about four times larger external impact resistance than that of original glass. This study is aimed to verify that ceramic-printed toughened glass does not meet of GTR(Global Technical Regulations) No. 6 and its strength is lower than that of original glass through tests. The tests were conducted on the test pieces of original glass, toughened glass, and ceramic-printed toughened glass from five glass manufacturers. In Test 1, a 227g steel ball was dropped from a height of 2 meters, and damage was checked according to the test method of GTR No. 6. In Test 2, a steel ball was freely dropped from different heights and limited damage height was determined. In the result of Test 1 according to the test method of GTR No. 6, while all five test pieces of toughened glasses were not damaged, all the ceramic-printed toughened glass from the five manufacturers were damaged. In the result of Test 2, none of the five test pieces of toughened glass were damaged by a 10m ball drop, meanwhile, the original glasses were damaged by an average of 3m ball drop. And the results of the tests show that the ceramic-printed toughened glass does not have the features of toughened glass due to its very low strength. Therefore, this study contributes to the safety of consumers by considering the GTR No. 6, and by revising the toughened glass test method.

복합기초기술의 개발과 고층건물 기초공사의 적용에 관하여

양극영,정진섭,이광범,Yang, Geuk-Young,Jung, Jin-Sub,Lee, Kwang-Bum 한국건축시공학회 2002 한국건축시공학회지 Vol.2 No.1

자동차 안전기준 실험적 고찰을 통한 안전성 향상 방안 연구

신민철(Min Chul Shin),권해붕(Hae Boung Kwon),이광범(Kwang Bum Lee),김희준(Hee June Kim) 한국자동차공학회 2015 한국자동차공학회 학술대회 및 전시회 Vol.2015 No.11

제작결함현상에 대한 확인 및 검증 방안

윤용승(Yong Seoung Yun),권해붕(Hae Boung Kwon),이광범(Kwang Bum Lee),김희준(Hee June Kim),이기호(Ki Ho Lee) 한국자동차공학회 2015 한국자동차공학회 학술대회 및 전시회 Vol.2015 No.11

조산의 발생 빈도 및 원인 변화에 관한 임상적 고찰

정연욱 ( Yeon Uk Jung ),권오준 ( Oh Joon Kweon ),한용보 ( Yong Bo Han ),김금석 ( Kum Seok Kim ),이광범 ( Kwang Bum Lee ),김석영 ( Suk Young Kim ),이의돈 ( Eui Don Lee ) 대한주산의학회 2002 Perinatology Vol.13 No.2

연구목적:신생아 사망률과 이환율의 가장 큰 원인인 조산의 발생 빈도 및 원인 변화를 1995년과 2000년의 조산아 분만을 통해 비교해 보고자 하였다. 방법:가천의대 부속 길 병원에서 1995년 1월 1일부터 8월 31일까지 분만 총 5309례 중 20주 이상 37주미만의 조산 438례와 2000년 1월 1일부터 8월 31일까지 분만 총 2028례 중 20주 이상 37주미만의 조산 319례를 대상으로 연령 분포, 분만력, 분만 방법, 신생아의 성, 분만 시 체중 등을 조사하였다. 결과:전체 분만 당 조산의 비율은 1995년 8.1%에서 2000년 15.7%로 증가 하였고, 조산의 원인으로는 원인 불명은 25.5%(109예)에서 20.2%(66예)로, 조기 양막파수는 26.9%(115예)에서 22.9%(73예)로, 자궁경관무력증은 9.7%(41명)에서 6.9%(22예)로, 기타 원인 8.9%(38예)에서 5.1%(16예)로, 자궁기형은 1.6%(7예)에서 1.0%(3예)로 감소 소견을 보였으나 기타 원인인 산모의 질병 및 내과적 문제에서만 통계학적으로 유의하였고, 다태임신은 10.1%(44예)에서 17.6%(56예)로, 태아기형은 2.1%(9예)에서 6.3%(20예)로, 임신성 고혈압증은 7.9%(34예)에서 13.3%(42예)로 유의하게 증가하였고, 전치태반이나 태반 조기박리 같은 태반의 이상이 7.3%(31예)에서 6.7%(21예)로 큰 변화가 없었다. 결론:본 연구에서 1995년과 비교하여 2000년 조산 자료에서는 원인 불명의 수가 감소한 것은 이전보다 좀더 조산의 원인에 대한 파악이 이루어진 것으로 추측되며, 다태임신의 증가는 최근 불임 시술의 증가에 따른 것으로 여겨지며 조산의 원인으로 태아기형의 증가는 약물 남용, 환경 오염 문제 및 산전 진단의 발달과 관련 있는 것으로 생각된다. 임신성 고혈압증의 증가는 이전의 다른 연구들에서 감소를 보인 것과는 달리 증가를 보인 것은 전체적인 조산비율의 증가와 함께 개인 병원에서의 3차 병원으로의 전원의 증가로 여겨진다. 지속적으로 좀더 기간을 두고 조산 원인에 대한 비교와 파악이 이루어져 이를 통해 신생아 사망률과 이환율 감소에 기초 자료로 활용될 수 있기를 기대한다. Objective:The aim of study was to compare incidence rate and causes of the preterm birth that are the major factor of newborn mortality and morbidity. Methods:Respectively there were 428 preterm deliveries out of 5,309 deliveries, from January to August 1995, and there were 319 preterm deliveries out of 2,028 deliveries, from January to August 2000 at Gill hospital, a hospital in affiliation with Gachon Medical School. The data were collected by review of the hospital record and the statistical analysis was performed using paired T-tests, Oneway ANOVA, Fisher`s exact test, and statistics significance was defined as p<0.05. Results:The incidence rate of the preterm birth increased from 8.1%(428/5,309) in 1995 to 15.7%(319/2,028) in 2000. Unknown causes of preterm birth decreased from 25.5%(109) to 20.2%(66). PPROM(Preterm premature rupture of the membranes) decreased from 26.9%(115) to 22.9%(73). IIOC(Incompetent internal os of cervix) decreased from 9.7%(41) to 6.9%(22). Uterine anomaly decreased from 1.6%(7) to 1.0%(3). And other causes deceased from 8.9%(38) to 5.1%(16). Multiple pregnancy increased from 10.1%(44) to 17.6%(56). Fetal anomaly increased from 2.1%(9) to 6.3%(20). Pregnancy induced hypertension increased from 7.9%(34) to 13.3%(42). There was not much change for the placental disorder or for placental abruption which decreased from 7.3%(31) to 6.7%(21). According to the analysis, there is a noticeable decrement in IIOC but noticeable increase in multiple pregnancy, fetal anomaly and PIH. Conclusion:Comparing the data from the preterm birth of 1995 and 2000, the unknown cause of the preterm birth is understood more accordingly to the decrement of known cause. The increase of multiple pregnancy seems to be caused by better in vitro fertilization. The increase of fetal anomaly is most likely caused by drug abuse, environmental pollution, and prenatal diagnosis. Differ from the decrease of previous research, the increase of PIH is caused by the increase of incidence of the preterm birth and also patients moving from private hospital to 3rd party hospital. We hope that we can continuously research the cause of the preterm birth and use that basic information to decrease the death and disease rates of newborn infants.

急·慢性骨髓炎에 關한 臨床的 考察

李廣範 고려대학교 의과대학 1974 고려대 의대 잡지 Vol.11 No.1

The writer has made a clinical observation in 117 patients with acute and chronic osteomyelitis, who were treated at the department of orthopedic surgery of this hospital during the past 3 and a half years iron September 1969 through April 1973, and following results were obtained. 1. The peak of age incidence was in third decade, nearly one-third of the cases in this age group, and this ailment was rarely seen in the aged (only 4 cases after 50 years of age). This disease was slightly more prevalent in the male with a 1.4:1 ratio of male t o female, but under 10 years of age girls were found more frequently affected than the male. 2. The common sites of involvment were the femur 53 cases (45%), the humerus 21 cases (18%) and the tibia 20 cases (17%). The made of infection in this Faterials was considered t o be of hernatogenous origin in 85 cases (72%) and in the remainder of the cases direct local involvmest secondary t o trauma. 3 The duration of symptoms was less than 1 month in 39 cases (34%), between 1 month to 3 months in 21 cases (18%) and more commonly attributed t o on inadequate treatment, 4. Staphylococci were the most common offender (in 2/3), and other relatively common causative organisms were E. coli and streptococci. 5. only 12 patients (10%) have been treated with antibiotics under conservative measure and 105 cases (90%: have been treated surgicaliy. complete cure was obtained in 85 of 105 surgically treated 6. Recurrences were encountered in 25 cases (21%), pathologic fractures developed in 4 cases (3.4 %), and 6 cases (5.1%) were complicated by arthritis.