국제학술회의 참관기 - 제30차 국제지질학 총회 및 학술발표회

정대교,Jeong, Dae-Gyo 한국과학기술단체총연합회 1996 과학과 기술 Vol.29 No.11

지난 8월4일부터 14일까지 중국 북경에서 열린 제30차 국제지질학 총회 및 학술발표회에는 1백여 국가에서 1만여명이 참석하여 성황을 이루었다. 한국에서도 50여명의 지질학자들이 참가한 이번 학술대회에 다녀온 강원대 정대교교수의 참관기를 싣는다.

반지하온실을 이용한 추용(椎茸) 억제재배(抑制栽培) 시험

정대교 한국임학회 1963 한국산림과학회지 Vol.3 No.1

1) An experiment was made at the newly constructed glass house of Chun chan Agriculture callege to find out facts about the late-raising of Cortinellus edodes (Berk) Ido et Imai during the winter season. 2) The host timbers used in this experiment were Quercus Serrata Thumb and Quercus crispulo BI. ; 5 years old each, the diameter ranging from 6㎝ to 17㎝, dividing them into 12 diameter groups with 10 timbers in each group. The total number of timbess was 240 in two blocks. 3) As the pre-treatment of host timber, the autumn generation in 1962 was inhibited, and before being put into the glass-house, they were stimulated of generation for 3 days after 3 days, water-soaking. 4) The temperature control was made by using two coal stoves and the humidity control by spraying and two full water tanks. During cloudy weather and night, the green house was covered to preserue constant temperature of 5℃∼10℃. 5) The result ; Qucreus Serrata Thumb. With lesser diameter than 9㎝ showed no generation either in as big timber as one with diameter 11㎝. On the other hand, too big timbers showed low rate of generation ; the reason, at a guess, is the too short period of cultivation and insufficient water soaking and inappropriate temperature. 6) The most standard size of host timber was found out be those with diameter 12㎝∼15㎝ in Quercus serrata Thumb, and those with diameter 14㎝∼17㎝ in Quercus crispula BI. Quercus criopula seemed to have slightly greater efficiency of generation than Quercus Serrata Thumb., but it could not be concluded as “decisive”. Lastly, the host timber used in this experiment were old and the rate of generation was low as a whole.

해외 선진국 사례와 IPA 기법을 이용한 건축공사 주요 안전관리 업무의 재해 예방효과 분석

정대교,서영준,신상욱,김대영,Jung, Dae Gyo,Seo, Young Jun,Shin, Sang Wook,Kim, Dae Young 한국건설관리학회 2022 건설관리 : 한국건설관리학회 학회지 Vol.23 No.5

Safety accidents on the construction scene can cause serious accidents, that take worker's life, and as the government has been making great efforts to reduce industrial accidents, the role of safety managers closely related to accidents at construction sites is becoming important. However, job stress is high due to excessive workload and inefficient work managed by safety managers in the current construction safety management system. So, it is necessary to improve and simplify the work contents. The main purpose of this study is to identify and improve tasks that need improvement and simplification of inefficient tasks, obtained through expert opinions and surveys on the level of difficulty and prevention effect of tasks in the safety manager's working stage, by using 2×2 Matrix analysis techniques. Therefore, this study will ultimately contributes reducing the occurrence of safety accidents on the construction scene.

수종목재부후균(數種木材腐朽菌)의 균사발육에 미치는 살균제의 영향

정대교 한국임학회 1965 한국산림과학회지 Vol.4 No.1

(1) The sterilizing effects of NaF, CuSO₄, CuCo₃, HgCl₂, ZnSo₄, and coaltar creosote on the mycelial growth of Irpex consors Berk. Polystictus versicolor L. Fr, Polystictus versicalor L. var. nigricans, and Schizophyllum commune Fr. Were studied. (2) The range of minimum density of the fungicides to check the growth of four fungi mentioned above was as follows; NaF 0.15∼0.25(%) CuSO₄ 0.20∼0.35(%) CuCo₃ 0.40∼0.50(%) HgCl₂ 0.05(%) ZnSo₄ 0.40∼0.45(%) Creosote 0.10∼0.15(%) Of the fungicides tested, HgCl₂ was most effective in fungicidal effects, and Creosote, NaF, CuSO₄, ZnSo₄, CuCo₃, followed. The order of resistance of the fungi to the fungicides was as follows: S. Commune Fr. P. Versicalor L. var.nigricans I. Consors Berk P. Versicalor L. Fr. (3) The fungicides were added to the pepton-agor culture medium at the concentration between 0.01 and 0.5%, and the medium was filled into 9㎝ petridshes. Two square millimeter agar blocks prepared separately from the fungi Contained agar were placed in the middle of the Petri-dishes, in cubated six days at 26℃. Diameter of biggest Colonies were measured.

참나무류의 비교내후성(比較耐朽性)에 관한 연구

정대교,민경희 한국목재공학회 1987 목재공학 Vol.15 No.2

This study was carried out under controlled laboratory conditions in order to investigate the relative durability to decay of 6 Quercus species The relative durability to decay was expressed by the percentage of weight loss by Lentinus edodes and Pleurotus ostreatus. The results obtained could be summarized as follows : 1. The most decay-resistant parts by L. edodes were heart wood of Q. serrata TH. and sap wood of Q. aliena BL. and the least decay-resistant parts were heart wood of Q. acutissima C. and sap wood of Q. dentata TH. 2. The most decay-resistant parts by P. ostreatus were heart wood of Q. serrata Th. and sap wood of Q. aliena BL. and the least decay-resistant parts were heart wood of Q. vaiabilis BL. and sap wood of Q. dentata. TH. 3. The percentage of weight loss in 6 Quercus species by section-height was not a consistent variation. 4. Putting these results together, Quercus aliena BL, could be retarded as the mast decay-resistant by L. edodes and P. ostreatus under normal condition among 6 Quercus species.

백악기 풍암 퇴적분지의 생성 진화와 퇴적물 기원

정대교 강원대학교 자원개발연구소 1998 자원개발연구 Vol.13 No.-

特殊林産物「生葛」의 利用과 收益性

정대교 건국대학교 농과대학 연합학회 1970 건농 Vol.- No.3

우리나라는 일본과 더부러 칡의 주 원산지로 알려져 있고, 삼림속에서는 어디서나 칡이 무성하게 번식함을 볼 수 있다. 그러나 이 칡은 한때 산림을 해친다고 해서 소위 만절 혹은 굴취 등으로 제거한 때도 있었고 토사방지 근균의 효과가 있다고 하여 보호된 때도 있었다. 그러나 그 이용도에 있어서는 거의 원시상태를 면치 못하고 있었으며 다만 칡넝쿨로 결박용에 이용하거나 칡뿌리로 갈분을 제조하고 칡순은 사료에 꽃은 밀원으로 이용하는 정도에 지나지 않았었다.

Energy Operation Management for Smart City using 3D Building Energy Information Modeling

정대교,박승희,이동환 한국정밀공학회 2014 International Journal of Precision Engineering and Vol. No.

During the last decade, global interest according to energy efficiency and climate change has dramatically increased. In particular,the building sector plays an important role, as it accounts for significant percentages of total energy consumption. So numerous highenergy efficiency devices have been developed and applied to building. But it is also important that such high energy efficiencyequipment is operated through efficient management. In this paper, through establishing a Building Energy Management System(BEMS) in the test-beds, the energy consumption and environmental data are measured and gathered at a total operation center. Theproposed energy saving technologies would integrate real-time energy consumption monitoring with Building Energy InformationModeling (BEIM). To find an optimal energy-saving method, a building energy simulation was used with Genetic Algorithms. TheHeating Ventilating and Air-Conditioning (HVAC) control schedules were sought. The energy-saving effect of this method is about9.44%. HVAC control schedules can be applied to building, using a function to control facilities in buildings. This energy-saving effectwill be added to the general saving effects for BEMS. It is expected that the proposed energy optimization tool using BEIM will beapplied to the micro-energy grid system for smart city in the near future.

백악기 경상분지의 생성 및 진화에 관여한 지구조운동의 분석과 최하부 낙동층에 대한 퇴적학적 연구 I: 경상분지 서남단 낙동층의 퇴적환경과 기원암, 고수류 분석

정대교,김용인,Cheong, Dae-Kyo,Kim, Yong-In 대한자원환경지질학회 1996 자원환경지질 Vol.29 No.5

The lowest formation of the Cretaceous Gyeongsang Supergroup, the Nakdong Formation, unconformably overlies the gneiss complex basement in Hadong, Gyeongsangnam-do and Gwangyang, Chullanam-do. The Nakdong Formation of the study area is 500-600 m thick and occurs as a belt shape. Based upon lithology, sedimentary structure, and bedding geometry the formation consists of three conglomerate facies (Gd, Gn, Gic), five sandstone facies (Sh-n, Sh-i, Sp, Sr, Sm), and four mudstone facies (Mf, Mfn, Mc, Mv). Sandstone facies are the most prominent in the study area. The twelve facies can be grouped into five facies associations. The depositional settings are elucidated from analyses of 12 facies and five facies associations of the formation. The lower part of the Nakdong Formation was deposited in alluvial plain, and the middle and upper parts were in a riverine system. The lithologies of the Nakdong Formation of the Gyeongsang Basin have been considered to consist of generally conglomerates and pebbly sandstones that were accumulated in alluvial fans. But the common lithology of the study area is sandstone which was formed in lower part of alluvial fan or fluvial setting. It is supposed that the coarser sedimentary sequence distributed west to the study area should be eroded out after deposition and early uplift, and the finer sandstone sequence in the east remains behind. The mineral composition of sandstones and the clast composition of conglomerates indicate that the Nakdong Formation was derived mainly from the metamorphic source rocks. Some reworked intraclasts were also supplied from the intrabasinal sedimentary layers. Paleocurrent data collected from cross-beddings, ripple marks, asymmetric sand dune suggest that most sediments were transported from north to south during the Nakdong Formation time.

회원작품 - 마일스톤 SG

정대교,Jeong, Daegyo 대한건축사협회 2022 建築士 Vol.637 No.-