해수에 의한 부식속도 데이터 베이스의 구축과 이용에 관한 연구

윤우생,한주철,박만호,송요승 한국항공대학교 1996 論文集 Vol.34 No.-

해수분위기에서 부식속도에 관한 데이터 베이스를 구축하였다. 본 데이터 베이스 system 프로그램은 커다랗게 두가지의 기능을 가지고 있는데 한가지는 데이터를 입력하는 기능이며 다른 한가지는 검색기능이다. 각각의 기능들은 몇개의 필드로 구성 되어 있다. 데이터베이스의 주된 필드들은 record, key-no, material type, material common name, environmental condition, corrosion rate등이다. 이중 중요한 연결고리용 필드는 각 데이터 들의 key-no로 사용하였다. We construct the Data-Base about corrosion rate of metal material in the sea water. In Data-Base system program have mainly 2 functions, one is data-input mode, the other is search mode. Each mode enclose some fields. Main fields are compose of record, key-no, material type, material common name, environmental condition, corrosion rate. Relation field is key-no of each data.

폴리비닐 알코올을 함유한 폐수처리

한운우,유병승 大田大學校 環境問題硏究所 1996 환경문제연구소 논문집 Vol.1 No.-

To determine the best condition of waste water treatment containing polyvinyl alcohol(P.V.A) through the recovery PVA equipment, several coagulants were tested. Coupled treatment of borax and sodium sulfate turned out to be the best coagulant. The recovery rate of remnant PVA with the treament was not affected by pH changes and temperature ranges tested, but increased by the polimerization of used PVA. The recovery rate and viscosity of remnant PVA were increased by repeated recovery process. These results may provide economical benifits by recovering the precious industrial materials from wastewater and be applicable to design the equipments recovering the environmental contaminants.

12주 운동프로그램의 참여가 남녀 노인의 혈중지질 및 성장호르몬과 면역반응에 미치는 영향

김상우,배윤정,이운용 한국특수체육학회 2002 한국특수체육학회지 Vol.10 No.2

The purpose of this study was to examine the changes of blood lipid profile, growth hormone, and immune responses in elderly population after a 12 week exercise program. A total of 11 elderly aged between 65-70yrs participated for this study. results as follows : In men, barbell lifting, grip strength, sit & reach, VO_2max were significantly increased(p<.05). For elderly women, lower back strength, grip strength, sit & reach, and VO_2max were significantly elevated(p<.05). The total cholesterol and triglycerides were significantly decreased in both sexes(p<.05). While no differences were found in growth hormone in both sexes, estrogen was significantly increased in both sexes(p<.05). Epinephrine was decreased in both sexes(p<.05), but norepinephrine showed only a tendency of increment. Only NK cell but not T cell and B cell was statistically significant in elderly women(p<.05). The 12 week exercise program had influenced on muscular strength, cardiopulmonary function, sex hormones, and catecholamine levels in elderly population.

대전광역시 지하수질 특성에 관한 연구(II)

한운우,박동학 大田大學校 環境問題硏究所 1998 환경문제연구소 논문집 Vol.3 No.-

The characteristics of drinking groundwater quality is analyzed by investigating 5.733 observed data during 1995. 1-1997. 7 in Taejon city. As the analysis of observed data, the 30.1% of them are over the drinking water quality standards in Taejon city and the unfit ratios of each region are 36.4% at Dong-Gu, 32.3% Taeduk-Gu, 31.2% Jung-Gu, 30.0% Seo-Gu and 25.2% at Yusoung-Gu. The mean concentrations of each item are as follow : NH₃-N is 0.05㎎/ℓ, NO₃-N 3.77㎎/ℓ, hardness 95.77㎎/ℓ, KMnO₄consumption 0.78㎎/ℓ, Cl?? 17.24㎎/ℓ, pH 7.23, evaporation remains 187.23㎎/ℓ, Mn 0.07㎎/ℓ, SO₄?? 16.84㎎/ℓ and F is 0.45㎎/ℓ. All of them are found to be under the water quality standard. But that of Fe is 0.21㎎/ℓ over the water quality at Taeduk-Gu, so that the cause of pollution must be examined closely.

부산광역시의 대기질 변화경향 및 특성에 관한 연구

이화운,김유근,원경미,홍정혜,문윤섭,장난심,정우식 부산대학교 환경문제연구소 1997 環境硏究報 Vol.15 No.1

生産企業의 效果的 硏究 開發戰略 : 新製品開發을 中心으로

李雲雨 啓明大學校 産業經營硏究所 1980 經營經濟 Vol.13 No.1

The research and development program of manufacturing enterprise beings with basic understanding and support of top mangement. The frst - stage is to grasp the necessary technology. The activities of our enterprise in research and development is considered to be very poor comparing to that of advanced industrial nations. But for the existance and growth of enterprises, research and development, technology innovation, new product development are the essential factors. Furthermore, the success of new product in the market is to accomplish goal as profit and its success can contribute to group of enterprise interest. The new product to be successful in the market, the originality of its product, such product factors as, adoptability of consumer's desire, adoptabtability on enterprise's goal and situation, etc. should be in correspondence with such industrial factors as relationship between product factors and enterprise organization, marketing activities and other environmental factors. As strategy to satisfy these above mentioned factors, the necessity on technology and technological are the important ones. In terms of the systematic side, the establishment and management of statistcal research & development organization is essential . In marking side, the contemplating in the market keeping the leading technology is desirable in case of self-developed technological products. On the other hand the comtemplating to the market is considered to be desirable in case of outside-development technology with the low-price and diversified in products. Finally, research development operation of enterprise should be supported and encouresed in the ways of establishing special research institutes in University and colleges and an active support is necessary as a mather of policy level by government.

고객만족에 영향을 미치는 물류시스템요인에 관한 연구

이운우,김정대 啓明專門大學 産業開發硏究所 1999 啓明硏究論叢 Vol.17 No.1

본 연구의 목적은 기업의 판매와 시장 점유율에 영향을 미치는 고객만족에 대한 물류시스템요인의 전략적 중요성을 분석하고자 한다. 기업의 고객만족요인은 전통적인 마케팅믹스요인과 고객서비스요인으로 이루어져 있으며, 물류시스템은 물적공급요인과 물적유통요인, 그리고 이들을 연결 통합하는 연결과정요인으로 구성되어있다. 이들의 관계를 분석하기 위한 연구모형을 제시하고자 하며, 향후 수집된 자료는 LISREL을 이용하여 통계처리 될 것이다. The purpose of the study is to analyze strategic importance of the logistics system factors in customer satisfaction affecting firm's sales and market share. Firm's factors to satisfy customers may be considered as a function of two constructs : traditional marketing mix, and customer service, and also logistics systems may be considered as a function of the three constructs : physical supply factor, physical distribution factor, and logistical spanning process factor integrating or linking each of these constructs. We are going to propose a research model for analyzing each relationships of these constructs and the collected data will be analyzed by LISREL statistical package in future.

무선랜용 Q-대역 0.25㎛ pHEMT MMIC 저잡음증폭기 설계

최우성,이원조,권태운,최재하 울산대학교 2002 공학연구논문집 Vol.33 No.1

본 논문에서는 무선랜용 수신 시스템의 첫 단에 쓰이는 Q-대역 2단 MMIC 저잡음 증폭기를 설계하였다. 설계된 증폭기의 이득은 10.312±0.5㏈, 잡음지수는 2.677㏈이다. 입력 정재파비 VSWR_in = 1.072이고, 출력 정재파비 VSWR_out = 1.055이며, 1㏈ 이득압축점은 5.824㏈m IIP9는 13㏈m이다. 이번 저잡음 증폭기 설계에 사용된 pHEMT는 HP-EEsof사의 각각 0.25㎛×50㎛ 크기의 2-finger 루트모델이다. 제작을 위한 레이아웃은 칩사이즈가 1,800×1,500㎛이다 칩사이즈를 고려해서 바이어스딘의 λ/4 라인은 구부려서 구성하였으며 1단과 2단은 50Ω 정합을 하였다. In this paper, the design of Q-band 0.25㎛ pHEMT MMIC 2-Stage Low Noise Amplifier for Wireless LAN is discussed. The LNA has a gain of 10.312±0.5㏈ and a noise figure of 2.677㏈. An input VSWR of the LNA is 1.072 and an output VSWR of the LNA is 1.055. 1㏈ gain compression point of the LNA is 5.824㏈m and IIP of the LNA is 13㏈m. In this paper, HP EEsof's pHEMT 2-finger ROOT Model of 0.25㎛×50㎛ is used. The layout chip size for manufacturing is 1,800㎛×1,500㎛. To reduce the size, a curved shape is adapted for λ/4-line realization. The first and second stage are matched to 50Ω.

돈분과 피마자박의 혼합비율에 따른 퇴비화 연구

장기운,이종진,홍주화,김남천,김완주,최우영 충남대학교 농업과학연구소 2007 농업과학연구 Vol.34 No.2

This study was conducted to estimate the humificating grade according to experiment of physico-chemical characterization and phyto-toxicity during composting of using with pig manure and castor meal. The material ratios of the compost which was mixed with pig manure(P), castor meal(C), and saw dust(S) were 5 : 1 : 4(PCS-I), 5 : 2.5 : 2.5(PCS-II) and 5 : 4 : 1(PCS-III) by volume to volume, and they were decomposed for 60 days. In the result, the changes of temperature in all treatments during composting were rapidly increased more than 68℃ at the incipient stage, and gradually decreased within 39℃ at 60 days the after treatment. pH was slowly increased from 7.5 to 7.7, and the C/N ratio was 13∼14 at the final composting stage. The low C/N ratio value in this compost was caused by the castor meal contented high nitrogen level(T-N 5.7 %). G.I.(germination index) was showed 73 to 78 range in all treatments at the 60^(th) day. Among all treatments PCS-I was appeared to be the best condition for composting.

Citric acid-water system에서 Sr^+2 이온의 흡착특성

한운우,김진완,김계남 대전대학교 산업기술연구소 2000 산업기술연구소 論文集 Vol.11 No.1

Soil decontamination process was conducted to study adsorption and modeling characteristic of Sr+2ion using citric acid and water system with TRIGA soil. When the concentration of citric acid was increased, the BTC of Sr+2ion was to be closed to the BTC of 3H2O at experiments of soil adsorption, Beside, when the concentration of citric acid was under 0.01M Sr+2ion, BTCs was asymmetry. It was characteristic of nonequilibrium adsorption. R and Kp were decreased to be increased the concentration of citric acid. Asymmetry modeling was nearly the same to be compare with symmetry modeling in decontamination process, when the concentration of citric acid was decreased. Result of experiment was agree with asymmetry and symmetry model, when the concentration of citric acid was increased. When 0.0M citric acid was used as a solvent, the soil remediation eficiency was 39.1%. while, when 0.01M citric acid was used as a solvent, the soil remediation efficiency was 92.7% .