山地 농민의 자연적응 전략 : 지리산지의 山地農法을 중심으로 The Agricultural Technique in the Mt. Chiri Region

정치영 고려대학교 민족문화연구원 2002 民族文化硏究 Vol.36 No.-

일반적으로 산지는 평지에 비해 농업을 영위하기에 열악한 자연조건을 지니고 있다. 기복이 심한 지형조건, 기온이 낮고 일교차가 심하며 강수량이 많은 기후조건, 돌이 많고 배수가 양호한 토양조건 등이 그것인데, 이와 같이 평지와는 다른 독특한 자연환경에 적응하기 이해 山地의 농민들은 고유한 農法을 고안·발전시켜왔다. 본 연구에서는 지리산지를 연구지역으로 하여, 山地農法에 대한 고찰을 통해 농민들의 자연적응전략을 살펴보았다. 그 결과, 旱田農法은 한랭한 기온조건에의 적응과 경사지의 토양침식을 방지하는 데 초점이 맞추어졌으며, 水田農法은 저온에의 적응은 물론, 배수가 양호한 토양조건과 관개수의 저수온을 극복하는 데에 많은 노력이 기울여졌음을 확인할 수 있었다. 이러한 지리산지의 독특한 농법들은 평지와는 자연조건이 다른 微環境(micro-environment)에 적응하기 위해 농민들이 오랜 시간에 걸쳐 시행착오를 거듭하며 연구하고 노력한 결과물로서, 농경지의 수직적 확대와 동시에, 토지생산성의 증가에 크게 기여하였으며, 궁극적으로 지리산지의 인구증가와 이에 따른 촌락의 발달을 가져왔다. The mountain farmers have used various and unique agricultural technique to adapt to an unfavourable environment for agriculture compared to plain region. This study examines the envrionmental adaptive strategy by farmers with special reference to the agricultural technique in Mt. Chiri region. In the dry-field farming, Chiri mountain farmer focused their attention on the development of cultivation methods such as selection of crop, cropping system and soil prevention. In the rice cultivation, farmers made a concentrated effort to introduce the best crop varieties that they deemed to be adaptable to cool temperatures. Additionally, chiri mountain farmers used plowing and weeding practices to minimize irrigation water, and made various water control methods to prevent cold-weather damage. This time-honored agricultural technique was the outgrowth of the farmers' learning-by-doing process in their search for environmental adaptive strategy. In result, Mt. Chiri experienced an increase in population and an expansion of rural settlement.

[논문]플라이 애쉬의 알칼리-실리카 반응에 대한 팽창 억제효과

김정은,전쌍순,서기영,진치섭 釜山大學校生産技術硏究所 2004 生産技術硏究所論文集 Vol.63 No.-

본 연구의 목적은 플라이 애쉬가 알칼리-실리카 반응에 미치는 영향을 알아보는 데 있다. 이를 위해서 시벤트를 플라이 애쉬로 치환한 모르타르 바를 제작하였다. 플라이 애쉬 치환률은 시멘트 줌량비에 대해 0, 5, 10,15, 25 및 35% 를 치환하였고 골재는 반응성 골재인 변성암과 퇴적암을 사용하였다. 플라이 애쉬로 치환한 모르타르 바의 알칼리-실리카 반응은 ASTM C 1260 시험법으로 조사하였다. ASTM C 1260 시험법은 16일이라는 짧은 기간동안 알칼리-실리카 반응을 알아 볼 수 있는 장점이 있다. 시험 결과I 알칼리-실리카 반응에 의한 모르타르 바의 팽창은 플라이 애쉬 치환율이 증가함에 따라서 감소하였고 플라이 애쉬의 치환율이 클수록 초기 강도가 낮아지고 유동성이 저하되는 것으로 나타났다. 플라이 애쉬 치환율은 알칼리-실리카 반응 억제효과와 강도 및 유동성 측면을 모두 고려할 때 25% 가 가장 적절한 것으로 판단된다.

노화가 흰쥐의 대뇌피질에 분포하는 NADPH-diaphorase와 Vasoactive IntestinalPolypeptide 신경세포에 미치는 영향에 관한 연구

허영범,지연근,이원규,김정혜,안희경 대한해부학회 1996 Anatomy & Cell Biology Vol.29 No.6

복합구조물의 파괴에 관한 치수효과의 중요성

정영화,김경진,원치문,심도식 江原大學校 産業技術硏究所 1995 産業技術硏究 Vol.15 No.-

In this paper, the importance of the size effects on the strength ratio is demonstrated by numerical results. The rate of decrease of tensile strength is for glass fiber, based on the experience of a composite manufacturing specialist. For other material, similar procedure may be used until detailed test result on such material is available. The strength criteria used is that of Tsai-Wu for stress space. The factors influencing the ratio are, reducing the tensile strength alone or both tensile and compression strengths, selection of the normalized interaction term, that is, the generalized Von Mises criterion or the Hill's criterion, and the status of applied stresses. Some of the numerical results are presented for a guideline for the furture study.

노화흰쥐의 대뇌피질과 줄무늬체에 분포하는 NADPH-diaphorase와 Neuropeptide Y함유신경세포의 변화에 관한 연구

허영범,지연근,이원규,김정혜,안희경 대한해부학회 1996 Anatomy & Cell Biology Vol.29 No.2

트리아릴포스포늄 염과 카르보닐 화합물 사이의 위티그 반응의 입체선택성에 대한 고압 효과

김정성,최정훈,지진영,김창만,김용훈 대구대학교 기초과학연구소 1999 基礎科學硏究 Vol.15 No.3

The Wittig reactions of triarylphosphonium ylides with various carbonyl compounds under high pressure were carried out to investigate its effect on the cis-trans stereochemical outcome. Generally, the cis-stereoselectivities at atmospheric pressure are known to be resulted from smaller steric hindrance of α-carbon of carbonyl group with hydrogens of phenyl residue of triphenylphosphonium ylide and in oxaphosphetane intermediate stage. Thus, the steric interactions between triphenylphosphonium ylide and carbonyl compounds in the transition state can be maximized. And, the reactions of semistabilized ylide and stabilized ylide at atmospheric pressure generate mainly thermodynamically more stable trans-alkane after formation of betaine intermediate. The reactions at high pressure, however, can generate cis-alkene more exclusively through oxaphosphentane intermediate,directly without the formation of betaine intermediate by reducing distance between ylide and carbonyl compound. Reaction between benzyl triphenylphosphonium ylide, a semistabilized ylide, and butyraldehyde at atmospheric pressure gave cis-1-phenyl-1-pentene with 34/66 of Z/E stereoselectivity, but when pressurized at 10000 bar, cis-alkene with 69/31 the Z/E ratio was excellently yielded than trans-alkene. In the case of Wittig reaction of ethoxyacetyl triphenylphosphonium ylide, a stabilized ylide, with butyraldehyde, Z/E stereoselectivity at 10000 bar was inversed in contrast to atmospheric pressure.

Newton-Raphson Method와 Matrix를 이용한 고차방정식의 인수분해 기법

장영우,황치정 충남대학교 기초과학연구소 1995 忠南科學硏究誌 Vol.22 No.1

Application of Newton-Raphson iteration, partial differentiation and linear algebra in factoring both real and complex coefficient polynomials is presented. When factorizating complex polynomials, it is shown that calculations can be performed in real arithmetic only. Complex cases expand the matrix size by a factor of two due to the real-numbers-only computation. For complex cases with large matrices, the method to calculate inverse matrix and factor polynomials using quarter matrices is suggested.

최적화에 의한 Ketoconazole Solid Dispersion System 의 약물 속도론적 연구

신영희,박중남,이치호 慶星大學校 1991 論文集 Vol.12 No.3

Ketoconazole was manufactured as solid dispersion system(SDS)by computer optimization technique and pharmacokientic properties were investigated in vivo by animal study using rabbits. Following results, doses (25,50 and 100mg/kg)and AUC?? had both a good relationship between them administered by SDS as well as ketoconazole only. AUC?? obtained by administration of ketoconazole only, physical mixture and SDS was occurred SDS>physical mixture>ketoconazole only in turn and plasma comcentration was increased about 2.3 fold by SDS administration than ketoconazole only. The results obtained by in vivo absorption test of SDS that made maximum dissolution in the artificial intestinal juice revealed a good relationship between in vitro and in vivo test.

대학 학생운동선수의 역할 갈등에 관한 연구

박치현,정구영,형구암,신인숙 한국스포츠리서치 2003 한국 스포츠 리서치 Vol.20 No.1

Walter Byers, the NCAA Executive Director from 1951 to 1987, coined the term 'student-athlete' in 1973. This phrase has since become widely recognized on college campuses and within society, and implies dual and separate role of being both a student and an athlete. As the term implies, these individuals attend college for two main reason: to make progress towards a college degree and to participate in intercollegiate athletics. The purpose of this study was to investigate factors influencing role conflict on personal attributes, athletic performance and role salience among collegiate student-athletes. The sample was drawn from 821 student-athletes who involved in intercollegiate athletics at the university located in Seoul and Kyunggido and enrolled in Korea Sports Council. They were selected by the method of stratified cluster random sampling. A survey was undertaken from 2003, using the self-administration method. All of questionnaires were personally delivered to the respondents, who immediately filled them out. t-test, one-way ANOVA, multiple regression were used to test and analysis the proposed model in the study. The findings of this study were as follow: 1. Female athletes shows greater cognitive and empirical status role conflict and load conflict, cognitive self role conflict, and empirical student-athlete role conflict than male athletes, three years athletes shows greater cognitive and empirical student-athlete role conflict than any other years athletes, and athletes with high level of life shows cognitive self role conflict and empirical student-athlete role conflict than any other athletes with love of life. 2. Athletic success influence cognitive self role conflict, and playing career has effect on empirical student-athlete role conflict. 3. Relative knowledge related in role of student and athlete has effect on all of cognitive and empirical role conflict, relative time spent in role of student and athlete has effect on cognitive status role conflict, cognitive and empirical load role conflict, and empirical student-athlete role conflict. And relative values of role of student and athlete has effect on cognitive and empirical status role conflict, cognitive and empirical load role conflict, empirical self role conflict and empirical student-athlete role conflict, and relative devotion in role of student and athlete has effect on cognitive self role conflict. status role conflict, load role conflict, and student-athlete role conflict, And satisfaction with student role has effects on cognitive self role conflict, and empirical status role conflict and load role conflict.

초고속정보통신망을 위한 가입자망 고속화 방안에 관한 연구

김중규,김용진,김치영 대구대학교 과학기술연구소 1998 科學技術硏究 Vol.5 No.4

Information super high way construction has focused on the national backbone network and the broadband subscriber access network. The national backbone network, it finished end of last year, connecting 80 cities backbone network and around 103 ATM switches will be installed by 2002 and 544 by 2010 for the national backbone network. On the other hand, the loop access network near by subscriber area will be developed with various techniques such as xDSL, FTTx mixed with xDSL, HFC with CATV network using copper cable until the FTTH network completion. The xDSL technique which uses copper cable, enables high speed data transmission using a powerful modulation and demodulation technique. A fiber feeder network according to our national information super high way network project will be preceded as a fiber loop carrier. Therefore, this xDSL technique that makes enable FTTx/xDSL configuration combined with a fiber feeder network, can meet the demand of multi-media service transmitting data up to 52Mbps and will be an effective alternative till FTTH completion. In another way, CATV network can be used as an information super high way network. This network is constructed as HFC condition. Therefore, HFC/Cable MODEM configuration for a loop carrier is suitable for video application and superior to accommodating a lot of subscribers at one time. Subscriber loop carrier network consisted of FTTx/xDSL and HFC/Cable MODEM has a good and bad point in aspect of connectivity, cost and technique. Thus, the direction to build and evolve information super high way subscriber network using a legacy line will be more likely correlative each other than each independent construction. In addition, in order to construct an effective subscriber loop carrier and a total network with minimum cost, total access network should be constructed at first.