건설공사의 재해예방에 관한 연구

연길환,조희제,임경택,윤석천 忠南大學校 産業技術硏究所 1994 산업기술연구논문집 Vol.9 No.2

This study aims to review the problems and status of accident and construction projects also to find out the ways of preventing the works from accident. It can let them understand the reasons for the accidents and the way of promoting the awareness of safety. For the study the literature and previous studies are reviewed and then the field managers and safety management members were interviewed intent of status of field safety management and accidents data occurred at domestic construction fields.

O₂기반의 XML 저장 관리기 설계 및 구현

최길성,김승연 大田産業大學校 2000 한밭대학교 논문집 Vol.17 No.1

본 논문에서는 XML 문서의 구조적 정보를 표현하는데 적합한 객체지향데이터베이스 관리시스템 O2를기반으로 하는 XML 저장관리기를 설계하고 구현한다. 이를위해 효과적인 XML 문서의 저장과 추출, 이 미지관리 및 수정된 문서들의 버전 관리 등을 지원하는 객체지향 모델링을 제시하고, 이를 이용한 XML 저장관리기를 구현한다. 구현 한 XML 저장관리기는 외부 애플리케이션과의 인터페이스 역할을 하는 저장관리기, XML 문서를 실제로 데이터베이스에 저장하는 XML 인스턴스 저장기, 데이터베이스 내에 저장되어 있는 XML문서에 대한 추출을 담당하는 XML인스턴스 관리기, 문서의 내용 및 구조 정보에 대한 인덱스를 생성하고 관리하는 XML 인덱스 관리기 그리고 질의를 처리하는 질의 처리기로 구성된다. In this paper, we design and implement a XML repository manager(XRM) based on OODBMS that supports structured information retrieval of XML documents. We also propose an object oriented modeling to store and fetch XML documents, to manage image data, and to support versioning for the XRM. The XRM consists of a repository manager that maintains the interfaces for external application programs, a XML instance storage manager that stores XML documents in the database, a XML instance manager that fetches XML documents stored in the database, a XML index manager that creates index for the structure information and the contents of documents, and a query processor that processes various queries.

소인형 장인이 등장하는 옹서대립담 연구 : 여주인공의 입장을 중심으로 mainly in the position of heroins

한길연 한국고소설학회 2003 古小說 硏究 Vol.15 No.-

본 고는 옹서대립감을 종합적으로 고찰하기 위한 시론으로, 이를 위해 옹서대랍담 가운데 특히 편수가 많고 성격이 유사한 <명주기봉>, <옥원재합기연>, <창난호연록>, <양현문직절기>의 '소인형 장인'이 등장하는 옹서대립담을 검토하였다. 이들 옹서대립담에서는 소인 혹은 악인형 인물 대 군자 혹은 선인형 인물로 친가와 시가의 구성원이 대비되는 가운데 친가가 극도로 열세에 놓임으로써 여주인공은 친가에 대한 원죄의식을 지니고 시가에서 살아가게 된다. 즉 소인형 장인이 등장하는 옹서대립담은 여성의 한스러움이 내부로 응축되는 과정과 밖으로 발산되는 과정을 형상화한, '한의 미학'이라 할 수 있는 단위담으로서의 의미를 지닌다. 각각의 단위담들은 장인의 소인됨의 정도, 남편의 장인에 대한 반감의 수위에 따라 여주인공의 한이 발현되는 양상이 달라지기에 다음과 같이 특징지을 수 있었다. 단순 소인형 장인이 등장하는 <명주>에서는 여주인공의 한을 표출하는 양상들이 주로 펼쳐지기에 이를 '한의 발산'으로, 사위 가문의 적대정치세력의 하수인으로서의 장인이 등장하는 <옥원>에서는 옹서가 대국적으로 화해하는 가운데 한을 이상적으로 극복하기에 이를 '한의 승화'로, <창난>은 <옥원>과 흡사한 구조를 지니지만 장인 개과하지 않음으로써 한을 풀 수 있는 계기들이 마련되지 않기에 이를 '한의 체념'으로, 사위 가문의 적대정치세력의 주동자인 장인이 등장하는 <양형문>에서는 여주인공이 친가에 대한 원죄의식의 무게에 짓눌려 한스럽게 살아가기에 이를 '한의 응축'으로 구분하였다. '한의 미학'으로서의 옹서대립담은 주독자층인 여성 독차의 입장에서도 중요한 의미를 지닐 수 있다. 정치적으로 兩家가 반목하는 경우가 적지 않았고, 장인을 경시하는 풍조가 만연했던 조선후기의 시대적 배경 속에서 여성 독자들은 친가에 대한 원죄의식으로 갈등하는 여주인공의 입장에 자신의 입장을 투영하여 자신들의 감정을 대리 표출했으리라 추정할 수 있다. <Mywongjookibong>, <Okwonjaehapkiyeon>, <Changlanhoyeon>, <Yanghyeonmunjikjulki> in which mean-type fathers-in-law appear are commented to be female centric novels. And husband-and-wife fights mediated by troubles between a father-in-law and a son-in-law spread out in these works. So in this thesis I re-examined these works from the position of heroin in agony between a father-in-law and a son-in-law. The tales of troubles between a father-in-law and a son-in-law, in which mean-type father-in-law appears are meaningful units for their 'aesthetics of lament'. Each work can be classified as these; <Myeongkookibong> as lament's blowing type, <Okwonjaehapkiyeon> as subliming type, <Changlanhoyeon> as renouncing type, <Yanghyeonmunjikjulki> as compressing type. To examine these tales from the point of 'laments' aesthetics ' is very meaningful for the position of female readers besides for the work itself. In the prevalent trend of despising father-in-law as late Chosun Dynasty, it seems that female readers reflected their position to heroine of these works and expressed their own emotions and desires vicariously. Owing to the verisimilar depiction of experiences and emotions of real life, the tales which deal with troubles between a father-in-law and a son-in-law, in which mean-type fathers-in-law appear are female centric.

예이츠 시에 있어서 아일랜드의 현실과 정치의 문제

손길연 청주대학교 인문과학연구소 2000 人文科學論集 Vol.22 No.-

The main purpose of this thesis is to examine how Yeats's opinion of the Irish middle class and revolutionists was expressed in his poems. We can realize Yeats's participation in Irish reality and politics, and his limitation as an Anglo-Irish writer by studying the relationship between Yeats's political beliefs and his poetry. Yeats's interest in fascism, his insistence upon the superiority of Anglo-Irish tradition, mode of expression and ambiguity in his literature works, and his exclusive vision of Irish society which denied Catholic Ireland and middle-class, have laid him open to many attacks from the nationalists and the middle class, whose commercialism rejected the noble spirit of national heroes and values of good art. Even today, there are a number of critics and Irish people who have estimated Yeats as a writer who looked away Irish reality and politics. But it seems to me that what we see him as a writer who didn't contribute to the Irish nationalism movement and as a nonpolitical poet is wrong. Though he did not reflect Irish reality and politics in all his works, he incessantly tried to express them and to write Irishness in his work with the subject matter from Ireland under John O'Leary's influence. The course of his artistic life was intertwined with the history of his country. It seems to me that his concern of nation with his political passion continued all his life. He advises Irish Young writers to develop Celtic culture and to have a concern of Irish subject matter in "Under Ben Bulben" regarding as his dying wish's poem. Yeats criticized the commercialism of the middle class and he yearned for Aristocracies who have made beautiful manners in "At Galway Races" and "These Are the Clouds". He expressed his ambivalent opinion of revolutionists in "September 1913". After the Easter Rising caused to change Yeats's thought for the Irish nationalism movement, he simultaneously showed us his criticism and sympathy for Irish revolutionists in "Easter 1916". Also he described his active support for them in "The Rose Tree". Yeats tried to de-Anglicize Ireland by rejecting commercialism and writing about Irish themes in English. But his cultural nationalism largely freed from the real world. And it is true that there are a lot of limitations in that his cultural nationalism was supported from the native Irish in Irish reality and that Yeats was rightly estimated as a great nationalist by his backgrounds-race·religion·culture, support for Ascendancy, attack on the middle class's philistinism, and the ideology of nationalism and Irishness in those days. Neverthless, I think we should revaluate Yeats as an Irish nationalistic writer, because he made a brilliant contribution to having the Irish people take an interest in their present questions and pursue the de-Anglicization detached from commercialism, based on national consciousness.

백서 Paraquat 두여에 의한 간과 폐 조직의 산화성 손상에서 Vitamin C와 Deferoxamine의 항산화 효과에 관한 연구

정연권,서길준,정중식,정성은,최국진,윤여규 대한응급의학회 2000 대한응급의학회지 Vol.11 No.4

Background: The toxicity of paraquat has been known to be caused by oxygen free radicals which leads to the lipid peroxidation and multiple organ failure. Although vitamin C has been known to be a potent antioxidant, recently there are numerous data which have shown that a low dose of vitamin C may act as a prooxidant due to the stimulation of the Fenton reaction with metal ions, which produces hydroxyl radicals. It has been reported that a deferoxamine in paraquat intoxication could reduce the production of the hydroxyl radicals by the inhibition of the Fenton reaction through the reduction of iron ion in tissue. The aim of this study was to evaluate the effect of the high and low dose of vitamin C and deferoxamine on lipid peroxidation and plasma TNF-α in paraquat intoxication. Methods: Female Sprague -Dawley rats were divided into seven groups: control group which was not given paraquat(20 mg/kg), P group which was given paraquat only, PVH group given paraquat and high dose of vitamin C(100 mg/kg), PVL group given paraquat and low dose of vitamin C(10 mg/kg), PVHD given paraquat, high dose of vitamine C and deferoxamine(100 mg/kg), PVLD given paraquat, low dose of vitamin C and deferoxamine, and PD given paraquat and deferoxamine. Animals were killed at 6 and 24 hours after treatment. Malondialdehyde(MDA), superoxide dismutase(SOD) and glutathione(GSH) contents, catalase activity, plasma TNF-α, and histologic changes in the lung and liver tissue were measured. Results: The lung histology in the PVH and PD or PVHD groups showed the significant decreases in the alveolar edema and interstitial thickness compared to the P group. The liver histololgy in the PVH and PVHD groups demonstrated marked differences in the central venous and sinusoidal dilatation compared to that of the P group. While the MDA levels of the lung and liver in the PVH and PD groups showed the significant reduction compared to that of the P group at 6 hours after treatment, all groups showed the significant changes compared to the P group at 24 hours. There was no significant change of the SOD levels of the lung and liver at 6 hours among all groups. At 24 hours, the SOD levels of the lung in PVH, PVL, and PVHD groups showed the significant increases compared to the P group. The increase of the SOD level in groups combined with deferoxamine, however, revealed a little reduction. The SOD level of the liver in PVH group only significantly increased compared to the P group at 24 hours. There was no significant change of the GSH level of the lung and liver among all groups at 6 hours. At 24 hours, the GSH level of the lung and liver were significantly increased in both PVH and PD group and PVH group, respectively, compared to the P group. Although the catalase activity of the lung was not significantly increased, that of liver was signiflcantly increased in both PVHD and PD groups compared to the P group at 6 hours. The catalase activities of the lung and liver were significantly increased in PVH, PD, and PVHD at 24 hours. The concentrations of the plasma TNF-α were slightly decreased at 6 hours and slightly increased at 24 hours compared to that of the P group, but they were not significant. Conclusion: This study showed that although the low dose of vitamin C had no effect, the high dose of vitamin C revealed a decrease of the MDA level and an increase of SOD, GSH, and catalase activity in the lung and liver tissues, and the effect of the high dose of vitamin C increased with time. The administration of the deferoxamine with or without high dose of vitamin C, however, significantly showed the inhibition of the lipid peroxidation and antioxidant effect and low dose vitamin C decreased the effect of deferoxamine. The effects of the vitamin C and deferoxamine on plasma TNP-α were not clearly shown.

導痰湯이 家兎의 高脂血症 및 血栓症에 미치는 影響

金然斗,文炳淳,朴暎淳,金世吉 圓光大學校 韓醫學硏究所 1994 원광한의학 Vol.4 No.1

The present experiment was designed to investigate the effects of Dodamtang(導痰湯) on the hyperlipidemia and intravasculr coagulation induced rabbits. In order to control the precise condition, the experimental rabbits were sypplied with calorie limited food. The hyperlipidemia was induced by oral administration of cholesterol(500㎎/㎏) for 4weeks and the intravascular coagulation was induced by indotoxin injection(0.15㎎/㎏). The therapeutic effects of Dodamtang (250㎎/㎏ and 500㎎/㎏) on the lipid metabolism, histological changes of fat deposition in tissues, and the FDP were studied. The results were summurized as followings : 1. The food efficiency rate was decreased significantly with the increased concentration of Dodamtang. 2. The concentration of the serum glucose and total lipid decreased significantly with the increased concentration of Dodamtang. 3. The arteriosclerosis index for phospholipid (triglyceride/phosphokipid) decreased with the increased concentration of Dodamtang. 4. The concentration of the serum total cholesterol, free cholesterol and the arteriosclerosis index for HDL-cholesterol(LDL, VLDL-chloesterol/HDL-cholesterol) decreased with the increased concentration of Dodamtang. 5. The concentration of the serum total protein decreased significantly with the increased concentration of Dodamtang, however, the metabolic rate of albumin/globulin increased with the increased concentration on Dodamtang. 6. The concentration of the serum creatinine decreased significantly with the increased concentration of Dodamtang. 7. The activities of GOT, GPT, and LDH decreased significantly with the increased concentration of Dodamtang. 8. The fat deposition in tissues decreased significantly with the increased concentration of Dodamtang. 9. The concentration of FDP decreased significantly with the increased concentration of Dodamtang. According to the above results, Dodamtang is assumed to have a curative effects against hyperlipidemia and intravascular coagulation.

全齋 任憲晦의 祭禮 고찰

정길연 동양한문학회(구 부산한문학회) 2014 동양한문학연구 Vol.38 No.-

全齋 任憲晦(1811~1876)는 격동의 19세기 조선에서 성리학과 예학을 깊게 연구한 기호노론의 낙론계열을 대표하는 학자이다. 그러나 그에 대한 연구논문은 겨우 4편에 불과하다. 특히 전재는 예학과 관련하여 상당한 저술을 남겼지만, 그의 예학을 연구한 논문은 단 1편뿐이다. 본 논문에서는 전재의 많은 예설 중에서 그가 33세 때 작성한 제례 에 주목하여 그 구체적인 내용과 특징을 그의 학맥을 중심으로 고찰해보았다. 四禮 중에서 제례는 우리 가정에서 늘 정기적으로 행해지는 중요한 의식이다. 그럼에도 불구하고 제례 설찬에 관해서는 같은 학맥의 학자들 간에도 항상 異同의 논란이 있어왔다. 그것은 당초부터 설찬의 규정이 정식으로 정해진 것이 없었기 때문이다. 이에 전재는 , , , , 등 모두 5개로 구성된 설찬도를 작성하여 그동안 논란이 되어온 문제들을 정리하고 확정하려는 의도에서 이 도를 작성하였다. 전재의 학문 연원에 놓여있는 여러 학자들의 설찬도 및 그 설을 고찰해 보면, 그 내용은 크게 두 가지 문제로 집약된다. 첫째, 魚肉의 生熟 문제이다. 논의 결과 대부분의 노론 학자들은 익힌 쪽으로 의견을 모았지만, 여전히 명쾌한 해답은 얻지 못하였다. 그러므로 전재는 낙론 예설의 특징인 시의성과 실용성에 근본하여 생숙을 섞어 쓰는 절충안을 택했다. 둘째, 진설 방식의 차이이다. 사계를 비롯한 노론 대부분의 학자들이 時祭를 지낼 때 '兩位各設'을 주장한 반면, 미호와 전재는 '兩位合設'을 선택했다. 그 근거로는 역시 주자의 을 참고한 것이다. 이와 같이 전재의 설찬도는 『가례』와 『상례비요』뿐 아니라 율곡을 비롯하여 사계, 우암, 미호, 매산 등 여러 제현들의 설을 두루 참조하고 절충하여 만들었다. 전재가 이를 저술한 목적은 「祭饌圖說」에서 스스로 밝힌 것처럼 당시에 제례 풍조가 풍요함과 사치만을 일삼고 예의 본질을 망각하였기 때문이다. 그러므로 청결과 간편함을 지키면서도 그동안 논란이 되어온 설찬에 대한 규정을 종합정리하고 규격화하려는 의도에서 5개의 를 작성한 것이다. As a scholar who lived in Joseon of the 19th century when lots of turbulences swept the country, Jeonjae Lim Heon-Hoe(1811~1876) was a representative of scholars who belonged to the branch of Nakron under the Noron school. He devoted himself deeply to Sung-Confucianism and courtesy theories. However, there have so far been only four theses on him. Jonjae made lots of writings about courtesy theories. But there's only on prior paper researching his courtesy theory. This study investigated the contents and characteristics of , a table setting diagram for rituals that Jeonjae made, among lots of his courtesy materials, when he was 33, especially in relation to scholastic circles to which he belonged. Among the four types of rites, rituals are an important religious ceremony that family always took regularly in this country. Nevertheless, however, there were always controversies over how to set a table for rituals among scholars even if they belong to same circles. This was because there were initially no original rules of table setting for religious service. For this reason, Jeonjae prepared in order to clear up such controversies and finally determine the rules of table setting for rituals. consisted of 5 sections, or , , , and . The theories and arguments of table setting for rituals from other scholars on which Jeonjae's scholastic career was based were considered here to find that there were two main issues of that setting. First, it is whether fish or meat should be cooked or not before being put on the table. Most scholars of the Noron school agreed on cooking the food through discussion, but there was still no clear conclusion. While, Jeonjae proposed a negotiation, that is, an occasional combination of cooked and non-cooked fish or meat as he followed timeliness and practicality that were the main characteristics of courtesy theories by the branch of Nakron. Second, it is difference in the style of food arrangement on the table, that is, Jinseol. Most scholars of the Noron school, including Sagye, argued for the so-called 'Yangrip Gakseol'. In contrast, Miho and Jeonjae chose 'Yangrip Hapseol' on the basis of Chu-tzu's . In preparing , therefore, Lim Heon-Hoe referred to the descriptions of Garye and Sangrye Biyo as well as arguments from distinguished Confucian scholars like Sagye, Uam, Miho and Maesan and coordinated them. As he made clear in 「Jechan Doseol」, the very reason why Jeonjae made was because ritual practices of his contemporary times were just abundant and luxurious discarding the nature of courtesy. In other words, he made the diagram consisting of 5 sections with an intent to keep table setting for rituals clean and brief on one hand and sum up and standardize the rules of that setting that had been controversial.

업무상질병 발생 근로자의 특성 : 1999년 업무상질병으로 요양승인된 사례분석

안연순,강성규,권현길,정호근 大韓産業醫學會 2001 대한직업환경의학회지 Vol.13 No.4

목적 : 이 연구는 1999년 근로복지공단에서 업무상질병으로 인정한 사례를 정밀분석하여 직업병의 종류와 특성을 밝힘으로써 직업병 예방사업이나 산업보건연구의 우선순위를 결정하는데 기초자료로 제공하기 위하여 실시하였다. 방법 : 근로복지공단 주전산망을 통하여 재해일자가 1999년 1월 1일부터 12월 31일까지인 근로자 중2000년 6월 30일까지 요양이 승인된 업무상 질병자2,333명을 파악하고 이 중 뇌심혈관계질환자 1,348명과 근골격계질환자 410명을 제외한 575명을 연구대상으로 하였다. 소속 사업장 또는 연구대상 근로자에 대하여 우편 또는 전화 면담조사를 실시하여 업무상 질병자의 성, 연령, 질병 관련 작업기간, 질병 인지경위, 업종, 직종, 질병종류, 사업장규모 등에 대한 조사를 실시 후 기술분석을 시행하였다. 결과 : 업무상 질병자 575명 중 남성이 511명(88.9%), 여성이 64명 (11.1%)이었다. 사망유무는 조사당시에 사망자가 56명(9.7%)이었고, 사망하지 않은 자가 519명 (90.3%)이었다. 연령별로는50~59세가 217명(37.7%)으로 가장 많았고, 질병관련 근무기간은 10년 이상 근무자의 비율이 49.0%로 가장 높았다. 질병인지경위는 소음성 난청, 진폐증, 이황화탄소 중독으로 인한 업무상 질병자를 제외하고 건강진단을 통하여 질병을 발견한 경우가 조 사자의 12.7%fl 불과하였다. 소속 사업장 규모는5인 미만 사업장이 26.1%로 1999년 당시 산재보험 임의가입 대상인 5인 미만 사업장에 소속된 근로자의 비율이 가장 높았다.질병별로는 호흡기질환이 211명(36.7%)으로 가장 많았고, 다음으로 소음성 난청(이명 1명 포함)149명 (25.9%), 감염성질환 69명(12.0%), 유기용제, 중금속, 가스 등에 의한 중독성질환 60명(10.4%) 순이었다. 기타 피부질환 29명, 암 17명,양성종양(성대결절) 8명, 간장질환 9명, 일사병 및열사병 6명, 신경정신질환 5명, 신경계질환 4명, 안질환 3명, 혈액 ·골수질환 2명, 신장질환 1명, 기타2명이었다. 유해인자별로 분류하였을 때, 분진 209건(36.3%), 물리적인자 157건(27.3%), 화학적인자 89건(16.3%), 생물학적인자 82건(14.3%),작업판련성인자 34건(5.9%), 분류불능 4건으로 분진에 의한 업무상질병의 비율이 가장 높았다.종사업종은 제조업이 262명(45.6%)으로 가장 많았고 다음으로 광업 174명(30.3%), 기타 각종 행정기관 일용직 종사업이 42명 (7.3%), 의료업이 28명 (4.9%)이었다. 직종별로는 기능원 및 관련기능종사자가 285명 (49.6%)으로 가장 많았고 다음으로 장치, 기계조작 및 조립종사자 139명 (24.2%), 단순노무종사자 72명 (12.5%), 전문가 28명 (4.9%), 사무종사자 IS명(2.6%), 기술공 및 준전문가14명(2.4%), 행정 및 경영관리자 8명(1.4%), 판매 및 서비스종사자 8명(1.4%), 미상 6명이었다. 결론 : 이 연구를 통하여 우리나라에서 업무상질병으로 인정받고 있는 사례들을 분석함으로써 기존 통계에서 알 수 없었던 내용을 전체적으로 파악할 수있었고, 인첫받는 사례의 상당부분이 산업의학적 관리의 주요 대상인 팡업이나 제조업 이외의 업종에서 발생하고, 근무조건이 열악한 일용직 근로자에서 발생한다는 사실을 파악하였다. 또, 소음성 난청과 진폐증을 제외하고 업무상질병 승인자의 약 90% 가산업안전보건법상의 건강진단을 통하여 질병을 발견하기보다는 개인적인 병원방문을 통하여 발견한다는 사실을 확인하였다 이것은 작업병을 발견하기 위한특수건강진단 목적중 하나가 제대로 기능을 할 수 없다는 사실을 입증한 것으로 특수건강진단제도이 대한대상자 확대, 검사 항목 확대 등 제도보완이 필요함을 시사하는 결과로 판단된다. 또, 병원근로자, 일용직 근로자 등 업무상질병 위험직종에 대한 업무상질병 예방대책도 조속히 수립되어야 할 것이다. Objectives : The purpose of this study is to analyze the characteristics of occupational diseases listed by Korea Labor Welfare Corporation (KLWC). Methods : Using the database of the KLWC, we collected 575 approved occupational disease cases occurring between 1 January and 31 December 1999 and approved by the thirtieth June in 2000. We investigated the characteristics (sex, age, occupational history, kinds of occupational disease, exposure material, type of enterprises, etc.) of occupational disease using a mail survey and telephone interviews. Results : Men accounted for 88.9 %(511 workers) of the approved cases. 56 cases(9.7 %) died of occupational disease. The most common age group was 50∼59 years of age(n=217, 37.7 %). The proportion of workers with grater than ten years disease related working condition exposure were 195 (49.0 %). The majority of diseases were respiratory problems(211 workers, 22.4%), occupational healing loss(149 workers, 25.9%), infectious disease(69 workers, 12.0%), intoxication(60 workers, 10.4%), skin disease(29 workers, 5.0%) and cancer(17 workers, 3.0%). The causal hazardous agents were dusts(209 cases, 36.3%), physical agents(157 cases, 27.3 %), chemical agents(89 cases, 16.3 %), biological agents(82 cases, 14.3 %) and work-related agents (34 cases, 5.9 %). The major types of enterprise were manufacturing(262 workers, 45.6 %), mining and quarrying(174 workers, 30.3 %), public administration(42 workers, 7.3 %) and the health care Industry(28 workers, 4.9 %). The kinds of job included craft and related trades workers(285 workers, 49.6 %), plant or machine operators and assemblers(139 workers, 24.2 %), elementary occupations(72 workers, 12.5 %) and professionals(28 workers, 4.9 %). Conclusions : We were able to elucidate the kinds of occupational disease and the characteristics of workers through this study. Many approved cases occurred among non-manufacturing and non-mining workers and the kinds of disease were varied. This suggests that management policy must be established to prevent occupational disease occurring among workers in the above type of industries.

전단보강근량에 따른 초고강도 콘크리트를 사용한 고층형 내력벽의 이력거동

윤현도,연길환,정수영,윤석천,이창갑 忠南大學校 産業技術硏究所 1995 산업기술연구논문집 Vol.10 No.1

Three one fourth scale models using ultra high-strength concrete(f' =704 kg/㎠) are tested under the combined action of a constant axial and a horizontal load cyclically to failure. Such specimens are considered to represent the critical 3-story of low part in 60-story tall building of a structural wall system in area of high seismicity. The amount of vertical reinforcement and the level of applied axial stress are identical for the three wall tested. The cross-section of all walls is barbell shape. The aspect ratio(h /l ) of test specimen is 1.8. The primary objectives of this paper are to investigate the influence of the amount of horizontal reinforcement on the lateral resistance, failure mechanism, ductility and energy-dissipation capability of walls with ultra high-strength concrete. In contrast to what is widely believed, the horizontal web reinforcement does not appear to have a significant effect on shear capacity. Certainly, since the reduction of the web horizontal reinforcement to almost half the value specified by building codes doesn't affect the failure load, this effect in not accounted for by the truss analogy concept. The results obtained have helped to identify the causes of wall failure and have demonstrated that the concepts underlying current ACI Building Code provisions for the design of walls conflict with the observed structural behavior. It has been found that shear resistance is associated with triaxial compressive stress conditions that develop in the compressive zone of the section at the base of the wall.

일정축력 및 반복 횡하중을 받는 철골철근콘크리트 기둥의 내력과 변형성능

정수영,연길환,임경택,윤석천,한병찬 忠南大學校 産業技術硏究所 1995 산업기술연구논문집 Vol.10 No.2

An experimental investigation was conducted to investigate the strength and deformation capacity of Wide Flange Steel Encased Reinforced Concrete(SRC) Columns subjected to constant axial compression and cyclic lateral loading conditions. Six one-third scale specimens were tested, each consisting of a structural steel size encased in reinforced concrete. The parameters studied in the test program included the effects of B/t ratios of encased steel(=13, 18, 23), ratios of axial force(=1/3, 1/6). As a result, capacity prediction based on superimposing the moment-axial-load interaction surfaces of the steel shape and reinforced concrete produced good results; the average of the experimental-to-predicted capacity ratio being equal to 0.99∼1.20. The observed hysteretic behavior of the test specimens indicated that adequated ductility can be achieved and the concrete core must be inhibited to buckling of wide flange.