완전미에 대한 소비자 지불가치 평가

오상헌,이순석,박평식,정호근,이상덕 한국국제농업개발학회 2003 韓國國際農業開發學會誌 Vol.15 No.2

본 분석은 최근 고품질 농산물에 대한 소비자의 관심이 높아가고 있음을 착안하여 서울지역 주부를 대상으로 완전미에 대한 소비자 지불가치를 추정하였다. 가치추정 방법은 다중범위 이산선택 기법을 사용하였으며, 구매유형별 소비자 선호요인을 분석하였다. 또한 추정된 평균값을 근거로 서울지역에서 판매가능한 완전미의 총 소비자 지불가치를 추정하였다. 분석결과를 요약하면 다음과 같다. 1. 완전미에 대한 소비자 선호분석 결과 “구입할 것” 형에서 통계적 유의성을 가지는 변수는 월소득, 교육수준 및 주거형태로 나타나 월소득이 높을수록, 교육수준이 높을수록, 아파트에 거주할수록 완전미 구입의향이 높게 나타났다. “반반이다” 형에서는 주거형태(HOU)가 1% 유의수준에서, 주부의 가구당 월소득(INC), 교육수준(EDU) 및 가구원수(FAM)가 각각 5% 유의수준에서 통계적 유의성이 있는 것으로 분석되었다. 2. 완전미에 대한 소비자의 구매 유형별 평균 지불의사 금액은 일반 쌀보다 최소 1.13배에서 최대 1.55배까지 비싸더라도 구입의사가 있는 것으로 분석되었다. 3. 조사대상 지역인 서울에서 완전미가 전면적으로 판매될 경우 추정 가능한 소비자 지불가치의 총액은 가장 적극적인 구매의향을 나타내는 “반드시 구입” 형은 2.154십억 원, “반반이다” 형은 2.955십억 원으로 추정되었다. 위와 같은 분석 결과는 일반 쌀보다 높은 가격을 지불하더라도 품질이 우수하다면 국산 쌀도 충분히 경쟁할 수 있음을 나타내고 있다. 아울러 최근 연구가 활성화되고 있는 다양한 기능성 쌀에 대해 소비 및 유통 측면에서의 심도 있는 접근이 이루어져야 함을 시사하고 있다고 결론 지을 수 있다. This study aims to estimate the consumers' value of the head rice using the multi bounded discrete choice CVM. The respondents were a total of 1,000 housewives living in Seoul. The results show that householders are willing to pay 3,480won/㎏, 2,920won/㎏ and 2,537won/㎏ for the head rice asuming three scenarios(not sure, sure, definitely). Results also show that in Seoul province the estimate aggregated buying value of the head rice is approximately 2,955 billion won in the definitely scenario.

地籍行政의 改善에 관한 硏究

吳盛植 瑞逸專門大學 1993 論文集 Vol.11 No.-

A cadaster plays an important in contributing to national. It is due to need for the system to comort to the fair seceering of the right, and the exercising of the right on land that advanced society requires. As the comprehensive land imformation management recently emerged such as the material on the taxation of a land tax and the reasonable use social development and conservation of land. And while it has been executting for eighty years, our country has partially imporved it and maintained the cadaster's system of founded fime as it depending on most experiences. Therefore, the band of sympathy with the improvement of the existing cadaster's of it's problems at present, the need for the improvel cadaster's admimistration.

MnO₂를 촉매로 사용한 SnO₂계 CO센서의 특성

오태영,한상도,이상호,명광식,박기배 경북대학교 센서기술연구소 1998 센서技術學術大會論文集 Vol.9 No.1

CO sensors were fabricated with SnO_(2) thick-films using MnO_(2) or V_(2)O_(5) catalysts. The SnO_(2) thick-films doped with MnO_(2) or V_(2)O_(5) showed better selectivities to CH_(4), NO_(x) than the pure SnO_(2) film material in air at operating temperature of 450°C, 500°C respectively. In addition, MS2-2[(3wt%)MnO_(2)+SnO_(2)] showed better selectivity than SVS[(3wt%)V_(2)O_(5)+Pd+SnO_(2)]. MS2-3[(6wt%)MnO_(2)+SnO_(2)] showed the highest selectivity for 420ppm-NO_(x), 3500ppm-CH_(4) at 450°C

벽식 아파트의 평면확장 리모델링을 위한 슬래브와 철골보 접합부 성능 실험

오상훈,유홍식,장인화 대한건축학회 2003 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.23 No.2(구조계)

The purpose of this stud,' was to examine structural problem which occur in case of enlarging inner space and to show the solution. Shear experiment was performed to insure unification of the existing structure and steel frame in case of acting lateral force like seismic effect and wind effect. Also, bending experiment was performed to consider deformation of vertical direction due to subsidence of extension frame. Design range of connection was proposed by various test.

안모의 수직적 양태에 따른 골격 및 치조골의 위치 관계에 관한 연구

오중식,국윤아,김상철 대한치과교정학회 1999 대한치과교정학회지 Vol.29 No.3

교정 증례의 분석 예후 추정은 두개골의 수평 및 수직적인 관계가 동시에 고려되는 입체적 관점에서 평가되어야 한다. 따라서 본 연구에서는 성장이 완료된 성인 남녀 각 100명을 추출하여 두부 방사선 사진을 채득한 후 하안면 고경과 상안면 고경의 비율로 안모의 수직적 수직적 형태를 구분하여 군을 설정하였으며 이들 군간의 골격 및 치조골의 크기와 위치 관계를 비교하고 상호 관련성을 조사하여 다음과 같은 결과를 얻었다. 1. 치조고경, 안면 고경, lower gonial angle, 그리고 FMA 항목에서 하안면 고경이 큰 군의 것이 작은 군에 비하여 유의하게 크게 나타났다. 2. 치조고경, 안면고경, 하악지 고경, 그리고 Jarabak ratio 항목에서 남서이 여성에 비하여 유의하게 크게 나타났다. 3. 치성 및 골격성의 수직계측항목과 UAFH/LAFH의 상관관계 조사에서 치조고경,안면고경, lower gonial angle, FMA 그리고 Bjok's Sum 항목이 UAFH/LAFH와 유의한 상관관계를 보였다. The purpose of this study was to investigate the variations of the skeletal and dentoalveolar dimensions in relation to vertical facial patterns. Lateral cephalogram of 200 cases (100 cases of male and 100 cases of female, average age of which was 23.2 years) were traced and some measurements of skeletal and dentoalveolar dimensions were measured. The ratio of UAFH/LAFH was employed to classify the samples into groups of excess and short lower anterior facial height. And the comparison between two groups were taken statistacally. The following results were obtained. 1. The dentoalveolar height, lower anterior facial height, lower gonial angle, and FMA in the excess-lower-anterior-facial-height group were significantly larger than those in short-lower-anterior-facial-height group. 2. The dentoalveolar height, ramus height, and Jarabak ratio in the male subjects were significantly larger than those in the female subjects. 3. The UAFH/LAFH ratio showed a significant correlation to upper, lower facial height, AUDH, PUDH, ALDH, PLDH, Lower gonial angle, FMA, and Bjork's Sum.

Hg₁-xMnxTe산화막의 홀효과에 관한 연구

오재근,최기영,송재흥,김영국,채건식,주유환,설정식,손인호,차성극,이상찬 慶南大學校 附設 基礎科學硏究所 1996 硏究論文集 Vol.8 No.-

HClO₄(pH:2) 수용액에서 양극산화 방법으로 HgMnTe(HMT)의 표면에 산화막을 형성 시켰다. 산화막의 두께는 SEM으로 측정하였으며 10㎛였다. 전류-전압 특성곡선을 얻어 산화 피크 전압으로부터 HTeO₂?, TeO?, HHgO₂? 막이 형성되었음을 알 수 있었다. 산화시키지 않은 HMT와 HClO₄수용액에서 산화시킨 HMT에 대해 Hall전압 및 자기저항을 각각 측정하였다. 홀전압과 자기저항은 HMT보다 HMT산화막에서 더 컸으며 이것은 HHgO₂? 공격자가 홀의 역할을 하고, TeO₄? 산화막은 전하의 포획도를 낮게하기 때문으로 생각할 수 있다. Anodic oxidation processes on HgMnTe surface has been studied in standard aqueous HClO₄(pH:2) solution. The 10㎛ thickness of the anodic oxide layers was measured by SEM. The Composition of the anodic oxide layers are evaluated from current-voltage(I-V) characteristic of HgMnTe Oxidation. The layers are composed of mixed oxide. ??, TeO₄, and?? in HClO₄solution. Transport properties have been investigated in HMT oxide layer made in HClO₄solution and virgin HMT samples at 300K. Hall voltage and magnetoresistance are greater in oxide layer HMT than virgin HMT. As a result, we know that the vacancy of ??in an anodic oxide layer acts as hole and the resulting oxide ?? layer exhibit a reduced degree of charge trapping and increase magnetoresistance.

Mg-Fe 산화물계 NTC 서미스터의 特性

오영우,김현식,허정섭,이승관 경남대학교 신소재연구소 1997 論文集 Vol.9 No.-

조정식 Mg₁-χFe₂+χO₄(이하 Mg계)에서 x를 0.0, 0.025, 0.1, 0.2로 변화시키고, 소결온도를 1100°C~1250°C로 50°C간격으로 변화시켰다. 그 결과, NTC 서미스터의 특성을 잘 나타내었고, 저항온도계수 α는 Mg계일 때 -1.6%/°C로 높은 값을 나타내었고, B정수는 1500 [K]에서 2920 [K]의 범위를 나타내었다. 본 조성의 실험결과로써 Mn-Ni-Co계 서미스터를 Mg-Fe 산화물계 NTC 서미스터로 대체가 가능함을 확인할 수 있었다. Mg_{1-x}Fe_{2+x}O₄was prepared by sintering at from 1100℃ to 1250℃ with 50 C intervals, while x was varied from 0.0 to 0.025. 0.1, and 0.2. The results showed the typical properties of NTC(Negative Temperature Coefficient) thermistor. The best temperature coefficient of resistance, α was -1.6%/℃ in the Mg-based sample at 25 C. Thermistor parameter, B was in the range of 1500 [K]∼2920 [K]. As a result, the possibility that Mn-Ni-Co based thermistor could be substituted by the composition used in this study was confirmed.

인터넷 광고의 활성화 방안

오성동,류주식 朝鮮大學校 2002 經營經濟硏究 = Management and economics research Vol.25 No.1

Schottky Diode의 특성과 CSTL

오상식,김재형 인제대학교 1983 仁濟醫學 Vol.4 No.4

This paper described the characteristics of Schottky diode and Complementary Schottky Transistor Logic (CSTL) with Schottky diode. The Schottky barrier heights of Al and Al-2%Si layers to n-type Si were measured using I-V measurement and their values were 0.67eV and 0.85eV, respectively. To measure ac characteristics of CSTL, 29-stage ring oscillator and T-flip flop had been designed and fabricated according to Standard bipolar Process. For Al and Al-2%Si Schottky contact, the minimum propagation delay time and the maximum toggle frequency were measured to be 5ns, 10ns, 22MHz and 16MHz, respectively.

둔상에 의한 간 손상 환자의 CT분류에 따른 치료결정

오성환,김갑득,송화식 대한응급의학회 2001 대한응급의학회지 Vol.12 No.4

Background: Because of increased number of traffic and industrial accidents, the incidence of blunt abdominal injury patients has increased. Recently, abdominal computed tomographic(CT) scans have been widely used in emergency departments for initial diagnostic workups on patients with blunt hepatic injuries. The purpose of this study is to analyze the correlation between abdominal CT scans and the clinical outcomes and to recommend a direction for the management of blunt hepatic injury. Methods: A retrospective review was conducted of 66 patients with blunt hepatic injuries who underwent abdominal CT scans and were treated at the Department of Emergency Medicine of Dankook University Hospital during the period from January 1998 to December 2000. Statistical analysis was performed using the chi-square(χ2) test, Spearman correlation test, Cochran-Mantel-Haenszel chi-square(χ2) test and Fisher's exact test; a value of p<0.05 was considered significant. Results: Based on CT scans, we graded the liver injuries by using the system of the Organ Injury Scaling Committee of American Association for the Surgery of Trauma, Grade II injuries(28 cases, 42.4%) were the most common in this study. Most patients with injuries above grade III were managed surgically, and CT grades correlated well with operative treatment and initial fluid resuscitation. Initial shock status correlated with the CT grade, but did not correlate with operative management. For non-operative management, as the CT grade increased, the amount of blood transfusion also increased. Increasing liver enzyme did not correlate with CT grade. The mortality rate was 9.1%, and the most common cause of death were hypovolemic shock due to massive bleeding. Conclusion: Non-operative management is the first choice of treatment in low grade blunt hepatic injury(CT grade I, II, and III). For cases above grade IV hepatic injury, the key points of operative management were the hepatic injury itself and it's complication.