人口政策에 따른 諸課題

朴聖根(Park Seong Kun),Koh Kap Suk(토론자),Chang Man-Ki(토론자) 한국인구학회 1979 한국인구학 Vol.2 No.1

There are two main problems in formulating population policies. First, is it reasonable to formulate population policy in isolation from other social and economic policies? It is the personal belief of Mr. S. Park that a population policy should be regarded as a part of other social and economic policies. Second, there appears to be no clearly formulated long range objectives in conducting the current population redistribution policy; 1) Community development program should be based on the recognition of the special characteristics of the area. And the re-location program for industries should be strongly supported with special tax and loan consideration. 2) The policy aimed at the dispersion of population should be conducted with the program of providing an equal educational opportunity regardless of geographical location, and family planning. Discussants: Koh, Kap Suk and Chang, Man-Ki. 1. Urbanization may be considered as an inevitable result of industrialization. In order to regulate effectively the population movements into urban centers, there should be a clearly formulated population policy in co-ordination with other social and economic policies. 2. Let us assume that Korea will achieve the zero population growth rate by the year 2,000. The fact that currently there are no long range "visional" proposals to deal with the population composition and distributional problems indicates that there has been no comprehensive research about population planning. 3. The optimal population size for Korea should not be thought of in terms of a static concept but a dynamic concept which is related to manpower supply and housing problems. 4. The problem of aging should not be looked at solely as an economic issue. Instead, it should be examined from a humanistic point of view where high priority is placed on restoring human dignity for the older citizens. Response of Mr. Park: 1. There is a tendency to over-emphasize the economic side of population issues. It should be pointed out that a man not only provides labor which is an input for the production of economic goods, but also he is a consumer for whose welfare economic goods are produced in the first place. It should be remembered that economic growth has beneficial impacts on the population but it also has harmful effects. 2. In order to make the government officials aware of population issues, it has been proposed to the Population Policy Evaluation Committee that the courses in population studies be included in the study program for the re-education of government employees. 3. Issues involved in population dispersion: Urbanization is an inevitable process of economic development. Problems arising from urbanization should be solved not by forcefully preventing the migration of population from rural areas to urban centers but by reducing the rural-urban gap in the living conditions. This policy has already been implemented to some extent as indicated by the government's policy of decentralization of industries and Saemaul Movement. In summary, the basic policy of government is to slow down the rural-urban migration by providing incentives to stay in farms in the rural area rather than by the strong-handed method of preventing the internal migration.

消費者의 商標選擇에 관한 硏究

朴萬石 全南大學校企業經營硏究所 1990 産業經濟硏究 Vol.13 No.1

The purpose of the present study is twofold. The first is to attempt to develope and test a mutiattribute preference model under risk perception into which two research traditions on multiattribute attitude and on perceived risk that continue to proceed seperately can be integrated. The second purpose which may be related to the above is to summarize the empirical applications in these two areas, and to show some weekness of the manner in which the construct of perceived risk has been operationally and even conceptually defined. Despite the fact that the use of product specific attributes has been argued to be more meaningful for the marketers in predicting consumer preference and choice, traditional classification of such risk types as financial, physical, etc. has been the focus of most researches. This has resulted in the general failure to consider the possible positive consequences of mutiattribute alternatives. Identifying the perceived risk by relevant attribute may be a preliminary step in adopting the current composition model for multiattribute preference under risk. By employing the conditional probability distribution of evaluative aspect, a more formalized and far-reaching formulation that expresses the means-end chaining view of multiattribute preference is constructed. In addition, consumer's aspiration about each attribute and his risk tolerance to the gain or loss side of the distribution that determine the perceived risk can be included in the above formulation. The results of the empirical analysis are cosistent with what is anticipated theoretically.

S.I. 기관 밸브시스템에서의 이상연소에 관한 실험적 연구

박경석,한성철,장석형,손성만 경희대학교 산학협력기술연구원 2002 산학협력기술연구논문집 Vol.8 No.-

The suction pressure of an abnormal condition spark ignition engine which has non adjusting intake valves becomes reduced and residual gas increases at a greater rate than under normal combustions. This reduction in suction pressure is caused by the distribution of in equalable air in a cylinder leading to abnormal combustion. If this condition continues, the engine ceases due to an increase in engine heat loss. In this study, we conducted tests to determine the combustion characteristics of a spark ignition engine under both norman and abnormal conditions. The results of this study will establish basic data analysis for developing an automotive diagnosis system by analyzing some of the factors including pressure in the cylinder, output signal of the MAP Sensor and Exhaust gases.

체지방 측정기(Futrex-1000 body fat tester)로 측정한 소아의 체지방율에 관한 연구 : 학동기와 청소년기 아동을 대상으로

박상철,이동환,신상만,이상주,박준수,최석민,안재억 순천향대학교 1992 논문집 Vol.15 No.2

Using the infrared interactance(NIR method), the percentage body fat in 1,401 Korean children, aged 6-18years, was evaluated for normal and standard values. Correlation of percentage of body fat with age, weight, height, overweight(%), Kaup index and Rohrer index was also analyzed. The following results were obtained ; 1) In all the subject, weight and height showed standard growth(50-90 percentile) compared to growth data of korean children. 2) The percentage of body fat was decreased with increasing age and was measured higher in female than male. 3) The percentage of body fat was decreased with increasing height in both sex. 4) The percentage of body fat correlated negatively with age, heght, weight in both sex. In boys, the Rohrer index appeared to have a significant positive correlation with the percentage of body fat. (r=0.52454) In girls, the overweight(%) appeared to have a significant positive correlation with percentage of body fat. (r=0.56994) The Kaup index had no correlation with the percentage of body fat. This NIR method is safe, non-invasive, rapid, easy to use, and may be useful predict percentage of body fat, especially in the mass screening.

總括生産計劃의 模型에 關한 小考

朴萬石 全南大學校企業經營硏究所 1981 産業經濟硏究 Vol.8 No.1

The term "Aggregate Production Planning" implies the process of developing a plan that will satisfy or meet demand within the limits of available resources at the least cost to the organization. Manager's interest is therefore focused on the most important aspects of this deployment process such as production rates, employment levels, and inventory levels. To meet the needs of aggregate planning, a good many models and decision processes ranging from the graphic methods to the computer search methods have been developed. They include numerical optimizing techniques, and heuristic problem-solving approaches as well. Among them, Linear Programming Model, Linear Decision Rule, Management Coefficient Model, and Search Decision Rule are studied with particular stress on examining their theoretical structures and making some comments on each model. The contents to be discussed here might run as follows: Firstly, the LPM aims at identifing the optimal plan for minimizing costs. The advantage of LPM for solving the production smoothing problem lies in the simplicity of the model and in the comparative ease with which it can handle constraints on availability of resources. One limitation of LPM is its assumption of linear costs and a more serious issus is that all demand forecasts are treated as being determinate and carring equal weight. Secondly, the LPM was develoed as a numerical programming approach under the assumption of the quadratic cost funtion. But its quadratic form is clearly a matter of mathematical convenience and may be a source of serious error. Thirdly, the MCM seeks to establish coefficients that describe the manager's decision-making behavior in a given environment. Using statistical regression analysis, the decision rules are fitted to a simple expression. The axiomatic assumption that managers use good decision makers and what is needed is just to eliminate inconsistencies in their behaviors is rather questionable. Fourthly, the SDR involves utilizing a technique for searching directly an objective function in order to locate its optimum. In such procedure, the objective function is evaluated at a point, its value compared with previous results, and a move is determined based upon a set of heuristic rules. In this manner, the function is searched systematically for the optimum although there is no guarantee that it will be located. Because of the differences in the assumptions and the objectives of the models, a direct comparison is difficult. As a result of this study, a methodology having 5 steps for implementation of aggregate production planning models can be proposed as follows: The first step is to explain the past decisions and to produce improved decision-making by applying the MCM. The second step is to design a realistic test situation for evaluating the performance of proposed models prior to implementation. The third step is to select the best model. The fourth step is to apply the selected modle to the real decision-marking problem. Lastly, the models associated with cost structures must be updated and validated on a continuous basis with the aid of sensitivity analyses.

이변량시스템의 단계적충격검사를 위한 최적 실험계획

박희창,임대혁,최만석,이석훈 충남대학교 1991 忠南科學硏究誌 Vol.18 No.2

The purpose of paper is to suggest an optimal time for changing the stress when the simple step stress life test is carried out, the lift distribution is assumed between the long mean lift time and the stress with the cumulative exposure model. The criterion for optimality is to minimize the variance and the miximum likelihood estimations of the mean life times of each part under the normal stress.

우수 사과酒酵母의 分離와 利用에 關한 硏究

朴允仲,金燦祚,李錫健,吳萬鎭,孫天培 충남대학교 농업과학연구소 1978 農業技術硏究報告 Vol.5 No.1

Extensive selection works on wild yeasts of fruits were carried cut to obtain strains which are applicable to apple wine making. Among the total number of 1,358 yeast strains which were isolated from various fruit samples collected from the vicinity of Daejeon and other regions of Korea, the strains SH-49, SH-129 and SH-338 were found to be useful. Then experiments on their morphological and physiological characteristics, and on the aspects of practical use in apple wine making were proceeded. The results obtained were as follows: 1. The strains SH-49 and SH-129, particularly SH-49, were appeared to have good fermentation ability, tolerance to sulfur dioxide and to produce fine quality of apple wine. 2. Apple wines made by using the strain, SH-49 and SH-129 contained less amount of total acids than those by other strains. 3. Apple wines of SH-49 and SH-129 were clarified rapidly during the primary fermentation period, and their absorbancy at 430 nm after 45 days of storage were approximately half of others. 4. Apple wine of SH-338 contained higher amount of residual sugar and its quality was superior to others. It is considered that this strain could be used in the production of apple wine of a characteristic quality. 5. The strains SH-49 and SH-338 were identified as a Saccharomyces cerevisiae according to Taxanomic Study of Yeasts by Lodder, however, classification of SH-129 was suspended for further study.

충남대학병원에서 최근 정도관리

박종우,최석우,송만수 충남대학교 의과대학 지역사회의학연구소 1994 충남의대잡지 Vol.21 No.2

Nine trials of general chemistry and eight trials of blood gas were performed for external quality assessment of clinical chemistry using commercial control sera in 1994 in Korea. Test items of general chemistry were sodium, potassium, chloride, BUN, glucose, calcium, phosphorus, uric acid, creatinine, bilirubin, total protein, albumin, cholesterol, triglycerides, AST, ALT, and LDH. Test items of blood gas were pH, pO_2 and pCO_2. The mean of each item in general chemistry and in blood gas were used as designated target value for the calculation of Variance index score(VIS), respectively. Variance index score(VIS) system are used to evaluate the performance of participant's quality control. Also coefficient of variation(CV) was given as guidance of each method. Mean CV of 14 items except enzyme tests was 7.0% and the range was 2.4-12.7%. T he CV's of glucose, phosphorus, uric acid, creatinine, bilirubin, total protein, albumin, and cholesterol are better than last year. Mean VIS of 16 items in general chemistry was 57 and the performance of 11 items was improved than mean. In blood gas control, the range of mean CV was 0.2% in pH, 11% in pO_2, and 7.0% in pCO_2. The range of mean CV of blood gas in each trial was 0.1-0.3% in pH, 8.8-14.5%- in pO_2 and 5.1-16.9% in pCO_2.

急性骨髓性 白血病에서의 試驗管內 集落細胞 形成에 관한 연구

고석만,조덕연,박철신,강원권,김민범,김삼용,노흥규 충남대학교 의과대학 지역사회의학연구소 1988 충남의대잡지 Vol.15 No.2

To evaluate the in vitro granulocyte-macrophage colony formation in acute myfloblastic leukemia and the prognostic implications of these results, the author performed the in vitro agar culture of bone marrow cells in 10 patients with acute myeloblastic leukemia (AML) and 5 control subjects. Culture medium was composed of 20% fetal calf serum(FCS), 50% Iscove's medium, 0.3% agar, 10% colony stimulation factor (CSF), and 2 × 10 exp (5) cells/ml. Human placental conditioned medium (HPCM) and phytohemagglutinin-leukocyte conditioned medium (PHA-LCM) were used as colony stimulating factor. Colony counting was done on 7th day of culture. Colony was defi ned as containg 20 or more cells, and cluster was defined as containing 3-19 cells. The results were as followings, 1. In control subjects, the number of clusters formed was 3-47/2 × 10 exp (5) cells (20±19)and that of colonies was 5-24/2 × 10 exp (5) cells (14±9) when stimulated with HPCM. When stimulated with PHA-LCM, the number of clusters formed 5-39/2 × 10 exp (5) cells(18±16) and that of colonies was 6-13/2 × 10 exp (5) cells (9±3). 2. In AML patients, 3 groups were recognized according to pattern of colony formation: 1) non-forming 2) cluster forming 3) both cluster and colony forming. Of 10 cases, 5 cases Were `non-forming', 2 cases were `cluster forming'; and 3cases wer cluster and `colony forming'; 3. All 5 cases 'non-forming' cases, one of 2 cases of `cluster forming'; and none of 3 cases of `cluster and colony forming' achieved complete remission. So, there was significa nt difference in remission rate in the different growth types. These results suggest that granulopoiesis in AML patients is impaired and the pattern of in vitro CFU-L(colony forming unit-leukemia) formation has prognostic significance.

急性骨髓性 白血症에서의 試驗管內 集落細胞 形成에 관한 연구

고석만,조덕연,박철신,강원권,김민범,김삼용,노흥규 忠南大學校 癌共同硏究所 1991 癌共同硏究所 硏究誌 Vol.1 No.1

To evaluate the in vitro granulocyte-macrophage colony formation in acute myeloblastic leukemia and the prognostic implications of these results, the author performed the in vitro agar culture of bone marrow cells in 10 patients with acute myeloblastic leukemia (AML) and 5 control subjects. Culture medium was composed of 20% fetal calf serum(FCS), 50% Iscove's medium, 0.3% agar, 10% colony stimulation factor (CSF), and 2×105 cells/ml. Human placental conditioned medium (HPCM) and phytohemagglutinin-leukocyte conditioned medium (PHA-LCM) were used as colony stimulating factor. Colony counting was done on 7th day of culture. Colony was defined as containg 20 or more cells, and cluster was defined as containing 3 - 19 cells. The results were as followings, 1. In control subjects, the number of clusters formed was 3-47/2×10^(5) cells (20±19)and that of colonies was 5-24/2×10^(5) cells (14±9) when stimulated with HPCM. When stimulated with PHA-LCM, the number of clusters formed 5-39/2×10^(5) cells(18±16) and that of colonies was 6-13/2×10^(5) cells (9±3). 2. In AML patients, 3 groups were recognized according to pattern of colony formation : 1) non-forming 2) cluster forming 3) both cluster and colony forming. Of 10 cases, 5 cases were 'non-forming', 2 cases were 'cluster forming'; and 3cases wer cluster and 'colony forming'; 3. All 5 cases 'non-forming' cases, one of 2 cases of 'cluster forming'; and none of 3 cases of 'cluster and colony forming' achieved complete remission. So, there was significant difference in remission rate in the different growth types. These results suggest that granulopoiesis in AML patients is impaired and the pattern of in vitro CFU-L(colony forming unit-leukemia) formation has prognostic significance.