• Journal of Korean Society of Rural Planning
• /
• v.10 no.2 s.23
• /
• pp.1-6
• /
• 2004

This study tried to construct a direction in regional planning concerning the structural relationship between the ratio of aged population and the industrial characteristics. We investigated this structural relationship incorporating the aged population index and the number of classified companies. We applied diverse statistical analyses to understand the relationship. We classified the number of companies to reflect regional industrial characteristics using the principal component analysis. We applied a multiple regression model to understand the relationship between these two indices. The aged population index represents the degree of being old divided by the ratio of juvenile population and aged population. We found that such industries as manufacturing, service, and conveyance increase the ratio of juvenile population. However, industries such as tourism, waterworks, forestry, agriculture and etc. have a positive effect on the aged population index. In addition to these findings, we believe that the efficacy of this study is the possibility that can be used as the basic data when central or local autonomous entities need to adopt rural development planning.

• Journal of the Korea Computer Industry Society
• /
• v.4 no.12
• /
• pp.1033-1042
• /
• 2003

In this study, the economic population prediction by computer simulation has been studied by using statistical model. The forecast of future population based on that of the past is a very difficult problem as uncertain conditions are modeled in it. Even if a thought forecast is possible, world-wide cultures and the local culture emotion the cultures of the world and out country can not be predicted due to rapid change and the estimation of population is ‘nowadays more and more’ difficult to be made good guess. In the estimation of economic population, by using the census population from 1960 to 1990, and using ARIMA model developed by Box and Jenkins, the estimation has been done on the economic population until 2021 according to age as appeared table and appendix. This kind of forecast would have both good point and weak point of ARIMA model theory saying that prediction can be done only by the economic population.

• Journal of Korean Society of Rural Planning
• /
• v.28 no.4
• /
• pp.1-9
• /
• 2022

Rural decline due to the decrease of the local population is an inevitable phenomenon, and a vicious cycle has been formed between a lack of basic living services and a population decrease in rural areas. Therefore, the study aims to derive the migration decision-making characteristics based on basic living service infrastructure data in rural areas. To do this, the population change over the past 20 years was categorized into six types, and the relationship between the classified population change types and the number of basic living service infrastructures was analyzed using decision tree analysis. Of the total 3,501 regions, 801 regions were the continuous decline type, of which 740 were rural areas. On the other hand, among 569 regions that were the continuous increase type, 401 regions were urban areas, confirming the population imbalance between rural and urban areas. As a result of the decision tree analysis on the relationship between population change types and the distribution of basic living service infrastructure, the number of daycare centers was derived as an important variable to classify the continuous increase type. Hospitals, parks, and public transportation were also found to be major basic living services affecting the classification of population change types.

• Journal of Service Research and Studies
• /
• v.3 no.1
• /
• pp.75-86
• /
• 2013

It is important for regional comparative analysis about employment-population rate of young man and total employment-population rate to a policy data of central and local government. Through the result of comparative analysis, Central and local government can use policies distinctively according to the region and keep the efficiency of detail policy application. This study shows that we classify Seoul Metropolitan region and Gangwon, Choongcheong, Honam, Youngnam region from 16 cities and provinces, and calculate total employment-population rate and employment-population rate of young man for these regions, and then compute the relative ratio between these employment-population rates, and finally compare the relative ratio by these regions. According to main results of this article, total employment-population rates in all the regions have not changed, whereas employment-population rates of young man have been decreased in all the regions but the rates in Seoul Metropolitan region and Choongcheong region have been increased for recent years. Moreover the changes by period of the relative ratio have been almost same as that of young man's employment-population rate.

• The Korean Journal of Archival Studies
• /
• no.1
• /
• pp.107-135
• /
• 2000

Based on the "Archives and Records Management of Public Agencies Act" enacted from the year 2000, the Korean local districts, in a near future, will establish local archives. According to this law, the archives of provincial states and municipal cities are to be conserved permanently, whereas the archives of local districts are to be conserved temporally. Subsequently, the important archives that are categorized as the permanent documents will be transferred to the provincial archives. However the Korean local districts, which are well known for long history of self-administration, are better to preserve permanent documents in their own archives. Moreover, it is necessary for the local archives to collect and compile public and private documents as well. Also it is advisable for the local archives to associate with local citizens by holding lectures and exhibitions which would endow the archives a status as the cultural centre for local districts. By doing so, the local archives could be more important to the population for their cultural and practical necessities than the remotely municipal archives. Furthermore, according to the rule of field preservation, it is better to conserve documents in the local archives. If the government will decide to transfer permanent documents to the municipal archives, the local archives are recommended to keep micro-film copy by themselves.

• Asia-Pacific Journal of Business Venturing and Entrepreneurship
• /
• v.11 no.2
• /
• pp.233-247
• /
• 2016

Local food industry has been spreading all over the world. Korea is also actively applying and developing local food industry. However, relatively high distribution cost in Korean agricultural market is hindering its further growth. Distribution cost has close relation with shipping distance. Raised distribution cost brings major impacts not only on quality and price of products but also on greenhouse gas(carbon dioxide) emissions. Therefore, it is necessary to find a solution for inefficient distribution system of the local food industry to reduce overall cost and greenhouse gas. In this study, we present a location selection model for local food regional center using Analytic Hierarchy Process. The location of local food regional hub center is decided based on expert opinions on five factors: accessibility, quality, population, size of area, and shipping distance. The relative importance of the five factors has been concluded as follows: quality (0.430) ${\gg}$ population (0.262) ${\gg}$ travel distance (0.201) ${\gg}$ accessibility (0.075) ${\gg}$ and area (0.033). We apply and analyze the environmental management system model for Local food industry to develop the regional hub center site selection criteria and to analyze the effects of greenhouse gas emissions in the local food industry. This study, by applying and analyzing the environmental management system of the local food industry, is believed to be a valuable asset for managing greenhouse gas emission in the local food industry. Also, the data will be used for the autonomous local food industry's direct sales stall management. Eventually, this study will contribute so greatly to the local food industry's competitiveness that even large distribution companies will give way for the local food industry.

• Journal of the Korean housing association
• /
• v.24 no.2
• /
• pp.69-76
• /
• 2013

With people leaving the countryside to the cities as a result of industrialization and urbanization and drastic reduction of school children due to low birthrate, nationwide, total 3,438 schools have been shut down following the closed schools policy. Consequently, local governments have been active in selling, utilizing, and leasing the closed schools but there are still 466 closed schools that need to be addressed quickly. In addition to this phenomenon, aging population has become an important issue, and demand for elderly welfare facilities population is also increasing as a result. However, the supply of welfare services remains inadequate. This study was conducted in an attempt to solve both local and social problems at the same time, caused by the closing of schools and an aging population, through the use of closed schools as elderly welfare facilities, and suggests plans for per-unit space according to its type, and prototype, through research analysis of practical use, based on case studies. With the conclusions of both advantages and disadvantages, drawn from its type, we are hoping to be able to use this study by adapting its type, or mixing, according to one's needs.

• Journal of the Korean Institute of Intelligent Systems
• /
• v.10 no.5
• /
• pp.432-441
• /
• 2000

This paper deals with the fuzzy modeling for the complex and uncertain nonlinear systems, in which conventional and mathematical models may fail to give satisfactory results. Genetic algorithm has been used to identifY parameters and structure of fuzzy model because it has the ability to search optimal solution somewhat globally. The genetic algorithm, however, has a problem, which optimization process can be premature convergence in the case of lack of genetic divergence of population. Virus- evolutionary genetic algorithm(VEGA) could be a strategy against this local convergence. Therefore, we use VEGA for fuzzy modeling. In this method, local information is exchanged in population so that population can sustain genetic divergence. finally, to prove the theoretical hypothesis, we provide numerical examples to evaluate the feasibility and generality of fuzzy modeling using VEGA.

• Plant Resources
• /
• v.1 no.1
• /
• pp.26-32
• /
• 1998

This paper describes the variations in eight agronomic traits in three unadapted local landraces and an inbred cultivar of corn. To compare the agronomic traits in field evaluation with molecular marker evaluation the genotypes of the plant introduction were also checked by 4 microsatellite-SSR loci. The variations of the eight agronomic traits were higher in the local landrades than in the inbred line. which was substantiated by the high genetic variation in the landrades with microsatellite-SSR loci. The level of genetic variation was also different between landraces. Since the genetic evaluation can be easily quantified by the analysis of microsatellite-SSR loci. the threshold level of genetic homogeneity in the population for parental lines in breeding program can be determined and the effort of maintaining the landrace population would be alleviated. As an example in our analysis. the entry from Whachon should not need the same number of selfing generations as the other two landraces to get the level of inbred state. Since this line showed lowest intra-genetic variation within the population.

• Fisheries and Aquatic Sciences
• /
• v.9 no.1
• /
• pp.7-13
• /
• 2006

Using biochemical methods, we determined the potential of local female shrimp populations as breeding stock to select the best adult prawns for improving larval production. As condition indexes, we selected total RNA, DNA, their ratio, and trypsin activity. The DNA content in the pleopods of each local population was similar, i.e., between $0.90{\pm}0.06\;and\;1.02{\pm}0.04(SE){\mu}g/mg$. In comparison, the RNA contents differed markedly between $2.00{\pm}0.09$ and $0.96{\pm}0.08\;{\mu}g/mg$. Therefore, the RNA/DNA (R/D) ratio in the pleopod could be used as a condition index because it represents a biochemical characteristic of the population. The mean pleopodal R/D ratio of the Goheung population was the highest at $2.52{\pm}0.19$, which indicated the best condition. Trypsin activity was influenced little by shrimp condition and more by the amount of food ingested. The gonadosomatic index (GSI) and R/D ratio in the gonads provided offsetting information about the instantaneous gonad maturity. The Goheung population had the highest instantaneous GSI, despite some spawning. Based on the condition indexes and time of gonad maturation, the Goheung shrimp population is suitable for use as breeding stock.