우리나라 파프리카 수출단지 및 선과장의 병해충 조사

김기돈,이시원,강은하,신용길,전재용,허노열,이흥식 충남대학교 농업과학연구소 2013 농업과학연구 Vol.40 No.2

The disease and insect were surveyed locally in greenhouse, fruit packing house and store house of 51 farms in 13 towns having purpose of paprika exportation. By analysis, various disease and insect were not only founded locally but more ones detected in farms having old facilities and no natural enemy. We found 15 pathogens such as Fusarium spp., Alternaria solani, Leveilluila taurica, PepMV (Pepino mosaic virus) and TMV (Tobacco mosaic virus) in greenhouse, Fusarium spp. in fruit packing house and Penicillium spp. in store house. We found 15 insects in greenhouse such as Bemisia tabaci, rialeurodes vaporariorum and Myzus persicae in greenhouse, Hylobitelus haroldi in fruit packing house. However, the problem quarantine disease and insect for importation and exportation were not detected in inspection time.

시대성(zeitgeist)에 따른 typography : typography의 미학을 결정짓는 요인들에 대한 연구

강병돈,권재식 龍仁大學校 1998 용인대학교 논문집 Vol.15 No.-

There is a German word called zeitgeist and it means the sprit of time in English. Typographic design is a very useful tool for showing the sprit of time. For this reason, the purpose of this thesis is to investigate the strong relationship between technology and typographic form. In chapter two, I wrote about the fundamental concept of language as a method of human communication, defining what language is and what its components are. In chapter three, the historical development of language, especially in the typographic form, was traced. Chapter four and five treated relationship between new technology and modern typographic design.

琴湖江岸의 土壤과 自生植物의 重金屬 分布

盧在洙,鄭熙敦 嶺南大學校 環境問題硏究所 1989 環境硏究 Vol.8 No.2

Studies were made to inverstigate on the accumlation and distribution of heavy metals in soils and in native plants of the Gum Ho River. The content of heavy metals in soils and in plants showed the markedly difference according to the areas. In the branch streams heavy metals were much more accumulated in soils than in the main stream. The Dal So and the Shin Chon branch rivers showed particularly higher concentration than the other ones. The content of heavy metals was increased when the sampling areas are changed from the upper spot of the Gum Ho River(Mul Ti Mi area) to the down stream (Ha Bin). And the Shin Chon river is the diverging point of the heavy metal content. The distribution of heavy metals in plants was varied in accordance with the species regardless of the sites. Lentopodium lentopodioides contained the highest level of heavy metal components. There was no significant correlation between the heavy metal contents in soils and in plants except Erigeron canadensis. The correlation coefficient of Cu(r= 0.09) revealed a positive corellation in Erigeron canadensis. In soils, the Pb content was higher than the Cr. but the it was reversed in plants.

비선형 유한요소법에 의한 부착 및 비부착된 프리스트레스트 콘크리트 보의 휨 모델

이차돈,김민경,이재찬 중앙대학교 건설환경연구소 2001 環境科學硏究 Vol.12 No.2

본 연구에서는 기존의 이론 모델을 고찰하고 이들 모델의 단점을 수정, 보완하여 부착 및 비부착된 프리스트레스트보의 하중-처짐 관계를 예측할 수 있는 비선형 휨모델을 유한요소법에 근거하여 개발하는데 목적이 있다. 주어진 외력과 단면 내력간의 불균형력(unbalanced force)를 감소시키기 위하여 반복계산 형태의 수치해석 방법을 사용하게 되는데, 본 연구에서는 Newton-Raphson Method를 도입하여, 보의 하중-처짐 곡선을 예측할 수 있는 진보된 수치해석 모델을 개발하였다. 또한 비부착 프리스트레스보의 긴장재의 응력은 콘크리트와 긴장재가 부착되어 있지 않기 때분에 부재 전체길이의 변형을 고려한 해석이 이루어져야 하므로, 비부착된 프리스트레스트보의 휨 거동은 부재전체의 휨변형과 관계가 되므로 A.E Naaman이 제시한 부착감소계수(Ω)의 개념을 적용하였다. 개발된 모델은 임의의 텐돈위치와 profile, 임의 위치의 하중에 대해 적용할 수 있도록 개발되으며, 비교적 실험결과과 잘 일치하였다. In this research, various types of theoretical models and solution techniques suggested for predicting flexural behavior of prestressed concrete beam are reviewed. An analytical method based on the nonlinear layered finite element method is then developed to simulate overall load-deflection behavior of bonded and unbonded prestressed concrete beams. Emphasis is given to eveluate the stressed in unbonded tendons Based on the i￥A M ðR¿ n" Ω) suggested by A.E. naaman. The developed model can take into account various types of tendon profiles and loads. The developed model is found to predict experimental results reasonably well.

HRTF(머리저달함수)의 샘플링률 변환에 따른 입체음향 플레이어

오재경,이동재,임철수,최범석,이원돈 호서대학교 반도체제조장비국산화연구센터 2001 반도체장비학술심포지움 Vol.2001 No.-

본 논문에서는 3D사운드 생성 기술 중 대표적인 방법인 원음에 HRTF(머리전달함수)를 콘볼루션(convolution하는 방식으로 음상정위 모듈을 구현하였으며 음장감을 부여하기 위하여 잔향(reverberation)효과를 추가하고 크로스토크 현상을 제거하기 위하여 트랜스오럴 필터를 추가하였다.본 논문에서는 sampling rate conversion을 사용하여 decimation과 interpolation을 수행하여 44.1KHz의 sampling rate로된 coefficient를 downsample하거나 upsample한 HRTR(머리전달함수)를 사용하여 콘볼루션(convolution)을 수행했다.본 논문에서는 3D사운드 생성과정에서 필요한 연산과정을 최소화하여 일반 PC의 computing power로도 sampling rate conversion된 데이터를 처리하여 줄 수 있는 알고리즘을 제시하고 구현하였다.

스펙트럴 분석 : 이론적 고찰을 중심으로

李暾宰 용인대학교 산업경영연구소 2000 산업경영논총 Vol.6 No.-

This article was tried to introduce univariate spectral analysis as method of modelling to tourism. The univariate reflects any long-term "siness cycle"ype oscillations in tourists data. This research has proposed many statistical method such as adjusting seasonality using SIMS method, conducting unit root and cointegration test for reviewing 'has time series stationary?', removing trend to apply for Finite Fourier Transform using OPR(Orthogonal Polynomials Regression). In addition this prestudy has suggested using Rats program how to find out priodogram and power spectrum of tourism variables. Even though this article showed some critical ground of periodicities on two variables, however, we still have some problems for choosing between periodogram and power spectrum like as which is the best explanation methods on periodicities. Further study needed are to calculate Fourier coefficients, a_l, b_l that can be used to reconstruct the two cyclic components that were identified as major periodic components from the periodogram analysis and to apply drawing their amplitudes, phrases on graph of original residuals. Then, we can make sure which methods is fit best to their behaviors for projection. Besides we have to find the way to complement of smoothing and window width that power spectrun has.

旅行收支의 季節變動 分析

이돈재 용인대학교 산업경영연구소 1996 산업경영논총 Vol.1 No.-

The purpose of this study is to analyze seasonality of tourism variables which are concerned with tourism balance of payment. Tourism variables can be classified by two variables as follows :tourism recipts(TORC) and tourism expenditure(TOEP). According to the analyses of this study, TORC shows a stable trend and increases with an increasing rate. On the other hand, TOEP transfers from converging stage to enlarging stage. This study examines stability of time series(from the 1st quarter of 1978 to the 4th quarter of 1995) of two variables mentioned above. The former shows a stable trend while the latter fluctuates with an increasing rate. From these two results, we can find following two conclusion. First, seasonability of inbound demand becomes very weak owing to the promotion campaign by tourism industry More active tourism policy is required to increase inbound demand. Secondly, in order to change the current trend of TOEP, domestic tourism resources should be developed and outbound demand can be encouraged to pursue more qualitative tour.

2-Bromopropane이 암컷 골든 햄스터의 생식기능에 미치는 영향

최돈찬,최형재,박창은 龍仁大學校 2000 용인대학교 논문집 Vol.18 No.-

Ovarian dysfunction induced by 2-bromopropane(2-BP) has been described in female factory workers and experimental animals. However, the underlying mechanism is still unclear. 2-BP is the possible causative chemical for reproductive and hematopoietic toxicity. To clarify the effect of 2-BP on the female reproductive function, repeated doses of 2-BP were administered to female golden hamsters for 24 days. Following 2 completed estrous cycles, animals received subcutaneously vehicle(corn oil), 80mg/kg, 400mg/kg, 2000mg/kg of 2-BP for 8 days. The females were then mated with males. The treatment continued for a gestation period(16 days). Dams treated with 2-BP showed a significant decrease in body weight. 2-BP decreased the fertility and tended to decrease the number of pups born and the rate of pregnancy, depending on the dose. The eccentric pyknotic cells, shrinkage of oocyte, and scattered cells were appealed in the middle and higher dose groups. The results indicate that reproductive toxicity induced by 2-BP was dose-dependent in that the higher doses exhibited more severe toxicity than the lower doses in our 24-day repeated dose experiments. Thus, 2-BP as a endocrine disrupter affects female reproductive activity to cause the destruction of primordial follicle and its oocyte in the ovary.

漢字의 字形 變遷規律 : 古文字를 中心으로

이재돈 이화여자대학교 한국문화연구원 1994 韓國文化硏究院 論叢 Vol.64 No.1

The previous studies on Chinese Characters have been studied synchronically, but from a modern point of view the main focus in the study of Chinese characters should be on the development or evolution of Chinese characters on the basis of their form and structure. Thus, this paper aims to find out the rules generally shown in the process of development of Chinese characters through the diachronic study. In this paper, I surveyed the common phenomena in all stages of the development of Chinese characters from the viewpoints of Complification(繁化), Simplification(簡化), Analogy(類化), Substitution(代替) and Corruption(와變), etc.. Although efforts have been made to explore the rules shown in the process of development of Chinese characters, we are still unable to obtain a full picture of the development in their early stages. The conclusion of this paper, however, is that although the development of Chinese characters has been very complicated, basically there have been only two general and important tendencies in this process. One tendency is Simplification the result of which is that the original elaborate picture characters transformed into purely symbolic signs which were graphically composed of simpler strokes. The other is Phoneticization(聲化) the result of which is that the great majority of Chinese characters became phonetic compounds in structure.

수준별 이동식 수업이 문제 해결력 신장에 미치는 영향

이재돈,김호중 대구대학교 사범대학 부설 교육연구소 2006 敎育硏究 Vol.2 No.1

2002년 고등학교 입학생을 대상으로 시행되기 시작한 제 7차 교육과정은 학생들로 하여금 그들 적성과 능력에 따라 학습하도록 할 뿐만 아니라, 학생들의 개인별 차이를 고려함으로써 학생들의 수준에 따른 교과 과정으로 편성하여 운영하도록 권장하고 있다. 지금까지는 학생들의 다양한 능력수준을 고려하지 않고, 동일교사의 지도 하에 동일 교과서로 동일 교과내용을 가르쳐 온 실정이다. 따라서 학습능력이 다소 뒤떨어지는 학생들은 학습내용을 따라갈 기회를 얻지 못했고, 이와 반대로 우수 학생들은 그들 능력을 최대한으로 발휘하는 것 역시 어려웠다. 이러한 문제를 해결하기 위하여 개인별 능력과 적성에 따라 학생을 가르치도록 수준별 교육과정이 도입되고, 이에 따른 수준별 이동식 수업이 교육현장에서 실시되기 시작하였다. 수준별 이동식 수업이 진행되는 동안 많은 어려움이 발견되기도 했으나 또한 여러 효과적인 면도 발견되었다. 비슷한 성취도를 지닌 학생들은 동일 수업 속에 편성되도록 하여 자신감을 고취할 수 있게 되었고, 또 성취도가 높은 학생과 낮은 학생 두 집단에서 각각 이해수준이 향상되었으며, 수준에 따라 학생들을 쉽게 가르칠 수 있어서 교사에게도 역시 도움이 되었다.