다세대 내구성 소비재의 수요분석을 위한 확산모형

박세훈(Se Hoon Park) 한국경영학회 2002 經營學硏究 Vol.31 No.6

This suty deals with the dynamic sales behavior of wuccessive generations of high-technology consumer durables. Norton and Bass(1987), Nahajan and Muller(1996), and Jun and Park(1999) have proposed extensions of the Bass(1969) diffusion model to capture simultaneously the substitution and diffusion patterns for each successive generation of technological innovation. Jun and Park categorize sales data for multigenerational products based on whether the data distinguish between upgrade demand and first-purchase demand. That is. they reger to the case where the two demands are distinguishable in the sales data as Type I and to the case where they are not distinguishable as Type Il and then develop Type I and Type Ⅱ models which can be applied to data of each type. Furthermore, they assert that the models of Norton and Bass(1987) and Mahajan and Muller(1996) can only be applied to data of Type Ⅰ. but no existing model except for their Type Ⅱ model can be applied in the cas of Type Ⅱ data. In this article, Ⅰ propose a new multigeneration diffusion model that can be applied to data of Type Ⅱ. ThenⅠapply the Type Ⅱ model(JP2) of Jun and Park and the proposed model(NB2) in this study to the worldwide PC sales data(i.e. TypeⅡdata). Empirical comparison results reveal that in terms of fitting ability and predictive validity, the proposed mode(NB2) performs better than the Type Ⅱ model(JP2) of Jun and Park.

상표전환 행렬을 이용한 상표충성도와 경쟁위상 분석

박세훈(Se Hoon Park) 한국마케팅학회 2001 마케팅연구 Vol.16 No.3

본 논문에서는 Park, Jain and Krishnamurthi(1998)에서 제안된 총체적 수준의 상표전환 모형을 변형하여 도출된 본 연구에서 제시한 모형은 Colombo and Morrison(1989)이 제안한 상표전환 모형(C-M 모형)의 일반적 형태임을 보여주었고, 또한 C-M모형과는 달리 IIA특성을 내포하고 있지 않다는 것을 보여주었다. 그러므로 제품시장이 구조화되어 있는 경우에 총체적 수준의 상표전환 행렬을 사용하여 상표전환분석을 행하였을 때, 본 연구에서 제시한 모형은 C-M모형과는 상이한 비조건부 시장점유율과 충성도 지수들을 제공하고 또한 상표간 충성도 지수들의 비교·평가를 통하여 상표들 사이의 경쟁위상을 판별할 수 있다는 것을 보여 주었다. 마지막으로 냉장고시장의 상표전환 행렬을 사용하여 본 연구에서 제시한 모형과 C-M모형이 제공하는 상표전환 분석 결과와 이에 따른 마케팅 전략적 시사점들의 상이성을 예시하였다. Recently, Park, Jain and Krishnamurthi (1998) developed an aggregate-level brand switching model incorporating the hierarchical market structure and the varying degrees of (possibly negative) loyalty across all individuals in the market. This article shows that Park-Jain-Krishnamurthi (P-J-K) brand switching model is a generalized version of the Colombo-Morrison (C-M) brand switching model (Colombo and Morrison 1989). That is, the P-J-K model with hierarchically structured market condition is a form of the more general mover/stayer model while the P-J-K model with unstructured market condition is equivalent to the C-M model. The cross loyalty indices of brand i, which can be derived from the parameters of the P-J-K model, indicate the customer sources that brand i attracts. Furthermore, the difference of cross loyalty indices between brands i and j reveals the degree of competitive position of brand i relative to brand j. Knowledge of such relationships among competing brands would help brand managers in developing marketing strategies. Finally, this paper illustrates the proposed brand switching analysis with application to one durable good (i.e., refrigerator).

複合 韓藥劑 淸籬滋坎湯의 抗癌效果 및 作用機轉 糾明

Cho, Kyung-Sam,Kim, Si-Young,Park, Jai-Kyung,Choi, Seung-Hoon,Chung, Se-Young,Yoon, Hwi-Joong 경희대학교 동서의학연구소 1999 INTERNATIONAL SYMPOSIUM ON EAST-WEST MEDICINE Vol.1999 No.1

Kyung Sam Cho¹Si Young Kim¹, Jai Kyung Park²,Seung Hoon Choi³,Se Young Chung⁴, Hwi Joong Yoon¹¹College of Medicine, ²East-West Medical Research Institute, ³College of Oriental Medicine, ⁴College of Pharmacology, Kyung Hee University,Seoul, Korea. The Anti-cancer Effect of Oriental Medicine Chung-Ri-Ja-Gam-Tang in the Mouse with Metastatic Lung Cancer. Proceedings of International Symposium on East-West Medicine, Seoul. 231-243, 1999.-The oriental medicine Chung-Ri-Ja-Gam-Tang is an herbal medicine which has been used for pulmonary diseases and known as having immune stimulatory effects. It has been known effective in lung cancer. So we studied the effects and the mechanisms of this herbal medicine it the mouse with metastatic lung cancer. The metastatic lung cancer of the mouse was produced with melnoma cell line(B16BL/6).5×10□/mouse tumor cells were injected intravenously to the CDF1 mouse via tail vein. The mice were divided 4 groups. The first group was treated with 50mg/kg extract of Chung-Ri-Ja-Gam-Tang per oral for 10 days after cancer cell injection, second group treated with saline after cancer cell injection, the third group with medicine without cancer cell, and the last group with saline only. After 10 days treatments some of the mice were scarificed and the lung and spleen was removed. The survival duration, weight change, the number of metastatic cancer nodule of the lung, the NK cell activity, the capacity of cytokines(INF-γ,INF-α,IL-2) production and the proliferation activities of mouse lymphocytes were measured. The surival times of the group 1 mice were longer and the weight loss was less than the group 2 significantly. The number of the metastatic nodule of the lung were decresed in the group 1 than the group 2. The production of INF-γ,was increase in group 2 than group 3 and 4, IL-2 production was increased in group 1 than group 2,3,4 significantly. There was no difference in TNF- α production and proliferation activity of lymphocyte in each group. The NK cell activity was significantly increased in group 1 than group 2,3,4. We conclude that the Chung-Ri-Ja-Gam-Tang has the effect of increasing the NK cell activity of the CDF1 mouse with metastatic lung cancer(B16BL/6). And it is suggested that the increased production of the IL-2 is the mechanisms of enhanced NK cell activity.

전치부 반대교합아동의 발음장애에 관한 음향적 연구

박정삼,손동수,이상훈,김진태,한세현,장기택,김종철 大韓小兒齒科學會 1996 大韓小兒齒科學會誌 Vol.23 No.2

It has widely known for speech problem in patients with malocclusion,but there have been insufficient studies on degrees of serverity.Patients with openbite and CIⅢ malocclusion usually have speech problem.It has widly known that fricative /s/ is pronunciated most abnomally in CIⅢ malocclusion than any other consonant.Therefore 20 childen with anterior crossbite selected for control group.7 sounds such as /사(sa),서(sδ),소(so),수(su),스(sω),시(si),세(se)/ were recorded,and the formants and formants ratio were measured by using Sensimetric Speech Station,which is speech analyzing program in IBM pc. The results were as follows: 1.In anterior crossbite group,F1 of all 7 sounds were significantly higher than normal anterior relationship group(P<0.05). 2.There were no significant difference in F2 between two groups except/소(so),수(su)/(P>0.05). 3.In anterior crossbite group,F2/F1 ratio of all 7 sounds were significantly smaller than normal anterior relationship group(P<0.05). 4.There were no significant difference in accordance with tongue position(P>0.05).

신경절단이 가토간세포에 미치는 영향에 관한 조직학적 연구

박세훈,신영철 고려대학교 의과대학 1985 고려대 의대 잡지 Vol.22 No.1

To observe the hepatocytes in the liver of the sixty nine dennervated rabbits, the specimens were taken at the 5th, 10th and 20th days after total dennervation, and at the 2nd, 4th, 8th and 16th days after vagotomy. The sections were stained with hematoxylin-eosin and PAS techniques for light microscopy. Results obtained were summerized as follows : 1. Structures of the hepatocytes and the architecture of the hepatic lobule showed no specific changes in the dennervated and vagotomized liver tissues stained with hematoxylin and eosin. 2. Hepatocytes showed PAS negative reactions in the almost area of the lobule at the 5th day after dennervation and then the hepatocytes showing positive reactions were gradully increased until the 20th day. 3. On the 2nd, 4th, 8th and 16th days after vagotomy, the hepatocytes showed PAS positive reactions in the almost area of the lobule as seen in the normal ones. It is postulated, from the results, that activity of the hepatocytes is temporarily depressed after dennervation and the recovery of the activity gradually progresses thereafter. The activity of the hepatocytes, however, seems to be not influenced by the vagus nerve.

중소규모 사업장 근로자에서의 건강위험평가

박정일,이세훈,이강숙,이원철 가톨릭대학산업의학센타 산업의학연구소 1994 韓國의 産業醫學 Vol.33 No.3

This study was carried out to assess of knowledge(K). attitude(A) and practice(P) on general health risk factors in small and medium scale industry workers in Kimpo area. We used self-administered questionnaire regarding the physical exercise, smoking, drinking, intake of fatty diet, mental stress, diet habit, hypertension management, hepatitis, sleep, personal hygiene. The results obtained were as follows : 1. There were significant differences among age groups in attitude and practice but not significant in knowledge, and above 40 years old age group took the higest scores in KAP. 2. There were significant differences between male and female subjects on total mean scores of KAP. 3. There were not significant differences among groups in size of enterprise and work duration. 4. The white collar workers had high scores than blue collar workers but there were no significant differences on attitude and practice. 5. When stepwise multiple regression analysis was done, work status and sex were significantly attributed to knowledge, age and sex were attributed to attitude, and sex was attributed to practice, but the coefficient of determination were very low. In conclusion in small and medium scale industry workers, there were weak or no effects of age, sex, size of enterprise, work duration and work status on knowledge, attitude and practice regarding general health risk. So it suggested that the health promotion program including health education had to be carried out on all members of workers not on specific group.

정밀유성치차감속기 설계(1)

박영덕,이종원,오세훈 중앙대학교 생산공학연구소 1993 생산공학연구소 논문집 Vol.2 No.1

로보트나 정밀기계에 사용되는 유성치차 감속기는 적은 백래쉬 값을 가져야 한다. 본 논문에서는 이러한 적은 백래쉬 값을 갖는 정밀유성치차감속기를 설계하는 기법이 연구되었다. 본 논문에서는 유성치차의 간섭에 있어서 involute, trochoid 그리고 trimming 간섭 뿐만 아니라 전위계수와 위치공차의 잘못된 선정으로 인한 치형 절삭 현상이 나타날 수 도 있음을 규명하였다. 또한, 백래쉬와 전위계수와의 관계식을 유도하여 정밀 감속기를 만들기 위한 도면 표기법에서 걸치기 공차에 따른 전위계수 변동과 백래쉬를 명기하는 프로그램을 개발하였다. Planetary speed reducer of robot or precison machine should have small backlash. In this paper, a design method for planetary speed reducer with small backlash is studied. It is found that there are not only three kinds of tooth's interference : involute, trochoid and trimming one, between planetary gear and ring gear, but also tooth cutting due to wrong selection of shift cofficient and position tolerance. An equation relating the backlash with the shift coefficient is derived and a new manufacturing drawing table is given to check the backlash on the planetary speed reducer using computer program developed in this paper.

근적외선을 이용한 두개강내 혈종의 진단

박정율,홍기선,김상대,김세훈,임동준,조태형 대한체열학회 2003 대한체열진단학회지 Vol.3 No.1

장애자용 휠체어 리프트 계단 지지대 설계프로그램

박대현,오세훈 중앙대학교 생산공학연구소 1998 생산공학연구소 논문집 Vol.7 No.1

장애자용 리프트 설계시 계단 갯수와 모양등이 일정하지 않기 때문에 장소가 바뀜에 따라 수작업으로 도면수정작업을 해옴에 따라 설계능률의 저하로 이를 개선하고자 개발하였다. 사용자가 사용하기 쉽도록 개발하였고 애니메이션도 추가하여 이해를 돕도록 하였다. 입력 파일에는 각각의 계단의 폭과 높이를 입력시키고 이를 프로그램을 실행한 후 불러들인다. 출력값으로는 그래픽으로 보여지고 간단한 애니메이션과 마지막으로 출력데이터 파일을 만들게 된다. 이 데이터 파일 속에는 각각의 계단의 좌표와 리프트라인의 좌표값 그리고 각도가 데이터 값으로 쓰여진다. It is very tedious work to design the support unit of steps for the wheelchairs lift because the configure and number of step are irregular. This program is developed to cut time of designing these support unit by using computer. User interfaces using graphics are added to visualize the input dat and output results. The output file contains the coordinates of step original, heights and the inclination of the step unit.

1920년대 경성도시계획의 성격:「경성도시계획연구회」와 '도시계획운동'

박세훈 서울시립대학교 서울학연구소 2000 서울학연구 Vol.- No.15