성장곡선의 통계적 해석

孫文求,安在求 慶北大學校 師範大學 1976 敎育硏究誌 Vol.18 No.-

It was explained as the equation, so colled, the logistic curve introduced by Pearl-Reed on 1924, that the certain variables increase monotonously or grow with time in social, economic or biological phenomena. This paper is to show the method estimating the constants which determine this logistic curve. First, it assumes the mathematical model and introduces the translatability so that the logistic curve is formed, and it investigates property of this translatability. From this property, the method estimating the constants which the curve is determined is produced out from the given actual samples.

하이파이 오디오 인터커넥트 케이블의 신호특성

황문구,이상래,김명녕 大田産業大學校 2001 한밭대학교 논문집 Vol.18 No.-

In this paper, the circuit properties of hi-fi audio interconnect cables are analyzed and verified by input-output signal analysis with the traditional lumped-parameter approach, the connecting cable is modeled and the input-output signal simulation is carried on. And then actual signal input-output transfer characteristics are measured and verified. Input signal is a white noise. Output signal is detected at the other terminal. The results show that it is improper for cables to be handled as a lumped parameter, but must be treated as a distributed parameter approach. Therefore, on this results, a new type distributed-sense cable model is proposed.

行政規制에 관한 一般的 考察

尹文九 명지대학교 리서치아카데미 2000 리서치 아카데미 논총 Vol.3 No.-

日本政府의 高齡者福祉對策의 現況과 課題 : 재가복지가업을 중심으로 A Center on In-Home Service

尹文九,金雄熙 명지대학교 리서치아카데미 2001 리서치 아카데미 논총 Vol.4 No.-

日本の情報通信産業と私的諮問機關

金雄熙,尹文九 明知大學校 附設 日本問題硏究所 2000 日本硏究 Vol.8 No.-

수질보전을 위한 영산강 유역의 TMDL 결정에 관한 연구

박성천,노문수,김용구 동신대학교 환경연구소 2004 환경연구 Vol.9 No.1

In the present study, the Total Maximum Daily Load (TMDL) was introduced to the Young-San river basin for the multipurpose expansion of the aquatic-ecosystem recovery and the water resource utilization of the Young-San Lake. For the methodology, the Young-San river basin was divided into 12 sub-basins in which point sources and non-point sources were investigated. The representative stations from the Young-San river were selected to estimate the hydraulic coefficients (a, b, alpha, beta) of the respective stations using HEC-RAS Model with the profile data from 『Ministry of Construction and Transportation, 1998』 Water quality prediction was performed by the QUAL2E Model with the input data from the water-stage network data of the Young-San River Flood Control Office and the water quality network data of the Young-San River Basin Environment Office. Based on the results from the water quality prediction, TMDLs for the respective sub-basins were proposed so as to fit the target water quality which was estimated in the river channel by the reduction of load.

친환경농업 시범마을에 대한 환경영향평가

이남종,고병구,노기안,한민수,김민경,곽한강,박문희 한국환경농학회 2003 한국환경농학회지 Vol.22 No.4

1999년부터 2001년까지 3년간 친환경농업 시범마을에 적용되고 있는 INM (Integrated Nutrient Management) and IPM (Integrated Pest Management) 실천에 따른 추진효과를 분석하기 위하여 시범마을로 지정된 옥천과 양평지역의 농가 포장에서 시비량, 양분유실 및 생태계 변화 등을 조사 분석하였다. 3요소 시비량은 토양검정시비로 인하여 농가관행시비와 비교하여 28.6~39.4% 절감할 수 있었으며, 쌀 수량도 시비량이 비교적 적은 토양검정 시비구에서 3~10% 증수하였다. 영농기간동안 토양 침투수중 NO₃-N 농도는 농가관행 시비구 2.9 ㎎/L에 비하여 토양검정 시비구는 1.5 ㎎/L로 감소하였으며, 시범마을 논으로 유입되는 관개수의 COD, NH₄-N, NO₃-N 농도는 각각 15.0, 0.67, 1.39 ㎎/L, 시범마을 논에서 배출된 용수는 각각 12.4, 0.29, 2.42 ㎎g/L로 감소되는 경향이었다. 처리별 수서곤충, 환형동물, 패류 및 감각류 등의 개체수는 농가관행구 100에 대하여 토양검정 시비구 293, 토양검정과 개량제 혼용구 276, 무비구 90으로 토양검정 시비구에서 많았으며 수서 무척추 동물은 관행농업을 수행하고 있는 지역을 100으로 볼 때 친환경농업마을은 242와 443으로 INM과 IPM을 실천하는 시범마을에서 생물종이 다양하고 그 개체수가 많은 것으로 나타났다. 친환경농업 시범마을 조성 후 작물 추천시비량 준수와 적기 예찰을 통하여 필요이상 사용되는 비료와 농약을 절감하여 생태계의 개선과 토양이 건전화된 것으로 평가되었다. In order to preserve the soundness of ago-ecosystem and products safety in agriculture, this study was evaluated environmental impact in relation to the INM (Integrated Nutrient Management) and IPM (Integrated Pest Management) at paddy fields at Ok-Chun and Yang-Pyung region. By introduction of INM with the application of BB(bulk-blanded) fertilizer based on soil analysis and EM, the application rate of fertilizer was reduced to about 28.6-39.4% and the yield of brown rice was increased to about 3-10% compared to conventional practices. The concentrations of COD, NH4-N, and NO3-N in irrigation water flowed to the environmental-friendly agriculture practices were 15.0, 0.67, and 1.39 ㎎/L, respectively. The concentrations of COD, NH₄-N, and NO₃-N from paddy fields in drainage water were 12.4, 0.29, and 2.42 ㎎/L, respectively. The total number of the freshwater invertebrates was higher in field treated with fektilhtion by prescription with soil testing. Also, the population density of aquatic insects was higher than the other fields at both demonstration villages. In conclusion, it was possible to reduce the amount of fertilizer and agricultural chemicals application, and increase the yield of rice by application of the environmental-friendly agriculture practices.

PDP용 유전체의 반사특성과 유전특성

권순석,김명녕,이상래,황문구 한밭대학교 2004 한밭대학교 논문집 Vol.21 No.-

이 논문에서는 P₂O_(5)-ZnO-BaO계와 SiO₂-ZnO-B₂O₃계의 반사특성과 유전특성이 연구 되었다. P₂O_(5)-ZnO-BaO계의 반사율은 SiO₂-ZnO- B₂O₃계의 반사율보다 낮게 나타났고, TiO₂의 함유량이 증가할수록 반사율이 감소되었다. 또한 P₂O_(5)-ZnO-BaO계의 유전율은 SiO₂-ZnO-B₂O₃계의 유전율보다 높은 값을 보였고, TiO₂ 함유량이 증가함에 따라 두 계 모두 유전율이 증가되었다. 이 현상은 공간전하효과로 설명될 수 있다. 본 연구의 결과는 높은 반사율과 높은 절연파괴 강도가 요구되는 플라즈마 디스플레이(PDP)의 하판 유전체, 또는 플라즈마 현상을 응용하는 조명 및 광고용 기구의 반사 유전체로서 응용이 가능할 것으로 기대된다. In this paper, the reflectance and the dielectric characteristics for P₂O_(5)-ZnO-BaO system and SiO₂-ZnO-B₂O₃ system have been investigated as a function of contents of TiO₂. The reflectance was decreased with increasing the contents of TiO₂ contents, and the reflectance of P₂O_(5)-ZnO-BaO system was lower than that of SiO₂-ZnO-B₂O₃ system. The dielectric constant of P₂O_(5)-ZnO-BaO system was higher than SiO₂-ZnO-B₂O₃ system, and the dielectric constant in the both system was increased with increasing of TiO₂ contents. This could be explained as the space charge effects. These results are could be applied to the under plate dielectrics of PDP required high reflective ratio and breakdown strength.

A. 高校 科學 (生物·地球科學) 및 數學科 探究學習의 評價模型 定立과 評價紙 開發

李相協,權炳奎,林在圭,孫文求,吳岱燮,楊洪準,梁承榮,姜用熙,林成圭,金正遠,金吉民,兪正在 경북대학교 과학교육연구소 1982 科學敎育硏究誌 Vol.6 No.-

Currently the evaluation of high school science and mathematics learning has been too much knowledge-centered without concerning the inquiring ability or scientific attitude. This study, therefore, was made for the purpose of establishing of evaluation model for high school science (biology and earth science) and mathematics learning and its evaluation items. In this paper, the research was done about three fields, biology, earth science and mathematics. 1. For the biology, the evaluation methods of inquiry learning were studied with the foreign references, and proper evaluation items were suggested. 2. For the earth science, after analizing 5 kinds of earth science textbook of current using in high school, essential 19 items were selected. 5 of them were tested in test group and control group, then, the results were analized. 3. For the mathematice, the teaching elements of「Set」and「Flow chart」in mathematics (Ⅰ) were selected and structured. Detailed teaching objects were established and evaluation items were introduced.

HgCdTe 제작 다이오드 어레이의 열처리에 따른 전기적 특성

이정환,권순석,김명녕,이상래,황문구 大田産業大學校 2001 한밭대학교 논문집 Vol.18 No.-

This paper is investigated on the study of uniformity improvement and electrical characteristics for the 1×128 diode array used Hg^0.7Cd^0.3Te. The electrical characteristics were measured for the device manufactured by several different annealing processes and temperatures being discrepant from existing method of annealing processes and temperatures. The results of uniformity were improved from 60∼80[%], the rate of existing uniformity, to 99[%]. The results obtained from analyzing and examining the characteristics of current-voltage(I-V) and capacitance-voltage(C-V) are following. First, the reverse current show 6[㎁] or so. It is seemed to be resulted from the decrease of direct tunneling and trap tunneling of the device. Second, when the input bias voltage is zero, the maximum value of reverse resistance show 12[GΩ], and the mean value of reverse resistance show 5[GΩ]. Third, it is shown that the voltage of the maximum value of resistance is shifted 0.1[V] to the reverse direction.