카메라 초점 오차에 강건한 패턴 정합

황수용,이상이,이승현 서울産業大學校 1996 논문집 Vol.44 No.1

We investigate the performance of robust pattern matching for defocused images used to recognize an object. The matching method uses the nonlinear joint transform correlator(NJTC) which is able to change the relative contribution of the phase and amplitude signals. Here the nonlinearty is used to make the robustness of the camera focusing. Computer simulation is used to show the correlation peak intensity, peak intensity, peak-to sidelobe ratio for defocused images.

고분자 키토산 처리가 딸기 과실의 품질과 부패에 미치는 영향

황용수,구자형 충남대학교 농업과학연구소 2004 농업과학연구 Vol.31 No.2

This study was aimed to determine the effect of high molecular weight chitosan treatment on the decay incidence and fruit quality in strawberries. Preharvest spray of chitosan (0.2%) effectively reduced the incidence of grey mould and increased fruit firmness. Chitosan application was also effective on remaining of surface gloss. This is probably due to coating effect. Physiological disorders were not found in treatment of 4 sprays. Internal quality such as soluble solid content and acidity seemed not to be affected by chitosan application. The effect of chitosan on keeping freshness was clear in fruit without physical damage at harvest, but muck less effective in injured fruit. Postharvest application of chitosan did not affect fruit quality. Above results indicated that chitosan is an alternative to keep strawberry quality through delaying decay and keeping firmness.

菊花의 消費水量에 대하여

黃龍鎭,鄭汶銖,宋錫銀 진주산업대학교 농업기술연구소 1992 農業技術硏究所報 Vol.5 No.-

菊花의 消費水量을 調査하기 위하여 溫室內에서 灌水의 水準을 FC-PF 2.0, FC-PF 2.2, FC-PF 2.4의 水準으로 灌水하여 그 消費水量을 구한 結果 1. 灌水의 水準別 消費水量은 平均 FC-PF 2.0에서 3.1mm/day FC-PF 2.2 水準에서 2.6mm/day, FC-PF 2.4의 水準에서 2.2.mm/day이고 最大 1日 蒸發散量은 FC-PF 2.0 水準에서 4.7mm/day, FC-PF 2.2의 水準에서 3.5mm/day, FC-PF 2.4의 水準에서는 2.8mm/day이다. 2. 줄기의 伸長率은 9月 10日을 基準으로 FC-PF 2.0의 水準에서는 9月下旬에 1.91, 10月中旬에 2.58, 11月中旬에 2.84이고 FC-PF 2.2의 水準에서는 9月下旬에 1.78, 10月中旬에 2.51, 11月中旬에 2.73이며, FC-PF 2.4의 水準에서 9月下旬에 1.86, 10月中旬에 2.26, 11月中旬에 2.69였다. 3. 1回의 灌水量은 12.3mm이고, 間斷灌水日數는 4日이였다. The purpose of this study is to find out the basic data for irrigation plans of Chrysamthmum during the growing period. The experiment pots were arranged with three irrigation level (FC-PF 2.0, FC-PF 2.2, FC-PF 2.4) for Chrysanthmum. 1. The comsumptive use of water for irrigation level were 3.1mm/day at FC-PF 2.0, 2.6mm/day at FC-PF 2.2 and 2.2mm/day at FC-PF 2.4. The value of maximum evapotranspiration for one day were 4.7mm/day at FC-PF 2.0, 3.5mm/day at FC-PF 2.2 and 2.8mm/day at FC-PF 2.4 for each irrigation level. 2. The relative ratio of stem length, compared with that of standard time point Sep. 10, were 1.92 on last of Sep., 2.58 on medium of Oct., 2.84 on last of Nov. at FC-PF 2.0, 1.78 on last of Sep., 2.51 on medium of Oct., 2.73 on medium of Nov. at FC-PF 2.2 and 1.86 on last of Sep., 2.26 on medium of Oct., 2.69 on medium of Nov. at FC-PF 2.4 for each irrigation level. 3. Maximum water quantity of one time irrigation were 12.3mm and irrigation interval were 4 days.

상관기 진폭 보상에 따른 판별력 조사

황수용,이상이,김남선 서울産業大學校 1996 논문집 Vol.44 No.1

광 JTC는 실시간 상관 시스템에 응용이 가능하다는 장점에 반하여 위상 혹은 진폭성분만을 별도로 처리하기는 어려운 상태에 있었으나, 최근 POC와 POF에 유사한 상관특성을 나타낼수 있는 광 BPEJTC, HPEJTC등이 제안되면서 위상과 진폭이 별도로 처리될 수 있게 되었다. 그러나, 이러한 시스템들은 위상과 진폭이 상관성능에 어떠한 영향을 미치는재 평가하기는 어려운 상태에 있었다. 따라서, 본 논문에서는 진폭이나 위상 성분의 비중을 변동시키며 상관성능을 분석 할 수 있는 것으로 ACMF를 기초로 하는 JTC 시스템인 ACJTC를 수학적 해석을 통해 비교분석하였다. ACJTC는 ACMF의 특성상 위상과 진폭 성분의 비중을 가변시킬수 있으므로 잡음 및 유사표적에 대하여 우수한 상관 판벽력을 나타내게 된다. 이러한 특성을 조사하기 위해 자연게 배경에 다중 표적 영상을 주기적으로 배치하고 컴퓨터 시뮬레이션하였으며, 광 JTC를 통한 실시간 상관 시스템의 구현 가능성을 제시하였다. The optical JTC system has the advantage of being applied to the real-time correlation system, but it has some difficulties that is amplitude and phase signals cannot be separately processed. Recently to solve those problems the BPEJTC and HPEJTC systems having the same characteristics of that of the POC and POF have been proposed. But there is no quantitive analysis how much the amplitude and phase signals are contributed to the correlation outputs respectively. In this paper, a ACJTC system based on the conventional ACMF is discussed through the mathematical analysis. The good correlation discrimination of the system is also analyzed by changing the relative contribution of the phase and amplitude signals for some similar targets. From the successful computer simulation results on the scenario where three same targets are periodically located on the nature background, the possibility of the high performance real-time correlation system based on the optical ACJTC is suggested.

Polysulfone 블럭 공중합체를 이용한 음이온 교환막의 제막 및 전기화학적 특성

황용구,조경섭,강안수 明知大學校 産業技術硏究所 2000 産業技術硏究所論文集 Vol.19 No.-

It was prepared an anion exchange membrane using block copolymer of Polysulfone(PSf) and polyphenylene sulfide sulfone(PPSS) by a two step synthesis: the chloromethylation and amination by triethylamine, and studied the effect of the preparation condition on the electrochemical properties such as the electrical area resistance, the ion exchange capacity, and the static transport number. The optimum chloromethylation condition were mole ratio of BPSf to chloromethyl methyl ether 1:20, reaction time 6 hours, and reaction temperature 25℃. The best electrochemical properties were measured, with area resistance 120.9 Ω·㎠, ion exchange capacity 1.324 meq./ g dry membrane, water content 0.204 g H₂O/g dry membrane, and fixed ion concentration 6.49 meq./g H₂O.

LDD 구조의 다결정 실리콘 박막 트랜지스터의 특성과 최적화

황한욱,황성수,김용상 명지대학교 대학원 1998 대학원논문집 Vol.2 No.-

We have fabricated a LDD structured polysilicon thin film transistor with low leakge current and be optimized LDD length has been obtained. The device performance is improved by hydrogen passivation process. The on/off current ratio of poly-Si TFT's with 0.5㎛ and 1.0㎛ LDD length is much higher than that of conventional structured device due to the decrease of leakage current. The optimized LDD length may be 0.5㎛ from the experimental data such as on/off current ratio, threshold voltage and hydrogenation effect.

IL의 변이성 : A General Survey

황용수 대구대학교 인문과학 예술문화연구소 2002 人文科學硏究 Vol.24 No.-

The nature of variability in learner language is not an all or nothing affair. There may be a number of aspects of the internal workings of a rule in terms of both development and communicative environments. In this paper, the causes of variability of learner language have been surveyed in several different aspects from the traditional paradigms, with emphasis on the newly intended categories of Interlanguage based on so far proposed IL theories: Replacement Hypothesis, Reconstruction Hypothesis and Permeability Hypothesis. The main characteristics of learner language variability are summarized below. First, the variability in view of the replacement hypothesis occurs in the process of substitution of one item with its counterpart(s) of the target language. The portion of the rules of L1 and L2 in IL determines developmental levels of learner language. Secondly, in view of the reconstruction theory, the learner mentally reconstruct his target language in line with the universal language developmental process. The variability inevitably gets in until rules find their stability in the given environments. Thirdly, according to the permeability hypothesis, the IL system itself exists as a permeable system which is much more vulnerable to both internal and external influences than any other natural language. The system is thought to be a kind of bean curd which allows the rules or items of L1, L2 or any other language to escape and invade easily, thus causing the system variable. To prove into the variability of the learner language, we have to consider the causes of the phenomena which display so many different aspects. Here sets in the strong demand for both comprehensive and sectional approaches to the nature of the learner language variability.

水稻의 適正 用水量 算定에 關한 硏究 : 葉水面 蒸發量을 中心으로 For Amount of Evapotranspiration

黃龍鎭,宋錫銀,鄭鳳守,朴魯奭,李裕根,李永日,黃光性 진주산업대학교 1976 論文集 Vol.14 No.-

1. 試驗기간의 氣象現況은 Table 1과 같다. 2. 벼의 엽면증발량은 活着後 점차 增加하여 第8기에 Peak로 되며 이때의 1日 엽면 증발량은 5.16mm/day로 되었다가 점차 減少現象을 보인다. 3. 엽면증발량은 第8期에 全 葉面증발량의 17.5%에 達한다. 4 벼의 증산비는 282이였다. 5. 株間수면증발량은 Table 3과 같으며 葉面증발량과는 負(一)의 相關關係가 있음을 보였다. 6. 증발계증발량과 엽수면증발량과의 比는 1.43이였다. 7. 증발계증발량과 葉面증발량과의 비는 0.89이였다. 8. Blaney- Criddle method에 依한 k値는 Table 5와 같다. 9. 증산强度는 총계 1021로, 증발산强度는 총계 1141.8로 나타났다. The resuts of the study on consumption use of irrigated water in pabdy field during the growing stage of gaddy rice are summarized as follow. 1. Amount of transpiration of paddy rice increases gradually after trasplantation and reaches peak on 8th growing period and amount of traspiration reached on 5.16mm/day, then it decreases gradual1y after that. 2. Trnspirstion reached l7. 5% of amount of transpiration at 8th growing period. 3. Transdiration ratio of paddy rice approximate1y 262. 4. As we know from Fig. 2 correlation between the amouut of everporation from water surface in paddy field and amount of trans piration shows high negative. 5. Ratio of between evaportion and evapotranspiration is 1.43. 6. Ratio of between evaportion and transpiration is 0.89. 7. The k value of Blaney-Cliddle methed shows Tab1e 6. 8. Transpion and evaoptranspiration intennsities is each other 1021 and 1141.8.本 試驗은 엽수면증발량 株間수면증발량을 實測하였으며 이 試驗에 여러 가지 未備한 点이 있는 것으로 思料되나 以上의 試驗結果를 要約하면 다음과 같다.

순차적으로 도우핑한 드레인을 가지는 다결정 실리콘 박막 트랜지스터의 특성 및 수소화 효과

황성수,김동진,황한욱,김용상 명지대학교 대학원 1997 대학원논문집 Vol.2 No.-

We have fabricated a novel gradually doped drain(GDD) structured poly-Si thin-film transistor. The GDD poly-Si TFTs reduce a fabrication process step, compared with the conventional LDD poly-Si TFT. without LDD implant by employing taper etched Si0_2 film instead of LDD implantation mask. The leakage current of GDD device is reduced two orders of magnitude from 21.52×10 exp (-9) A to 0.14×10 exp (-9) A in OFF state while keeping the ON current to be almost identical to that of the non-LDD poly-Si TFT's After 5 hours hydrogen passivation, the ON/OFF current ratio is increased by four times of magnitude, and the device characteristics, such as threshold voltage, subthreshold slope and leakage current, are improved remarkably.

실시간 광 BJTC 시스템 구현을 위한 신호 흐름 제어

황수용,차광훈,김호연 서울산업대학교 산업대학원 1993 大學院論文集 Vol.2 No.-

One of the most ridiculous issue of the moving target tracking system is real-time processing of the input scene so as to extract the target features and estirmate the target states but there are no way to solve this problem sensationally in a digital algorithm. Recently an optical approach for this problem is presented; named BJTC tracker. In this paper, we propose a hardware that can the control the JTC signal for the BJTC system and show the timing chart of the hardware system to prove the design method. We use the FPGAs, low-accesstime RAM, and high performance ADC and DAC. And we use NTSC type CCDs and monitors.