• Information Systems Review
• /
• v.21 no.2
• /
• pp.1-27
• /
• 2019

It is possible to provide Smart Tourism Service through the development of information technology. It is necessary for the tourism industry to understand and utilize Big Data that has tourists' consumption patterns and service usage patterns in order to continuously create a new business model by converging with other industries. This study suggests to activate Jeju Smart Tourism by analyzing Big Data based on credit card usage records and location of tourists in Jeju. The results of the study show that First, the percentage of Chinese tourists visiting Jeju has decreased because of the effect of THAAD. Second, Consumption pattern of Chinese tourists is mostly occurring in the northern areas where airports and duty-free shops are located, while one in other regions is very low. The regional economy of Jeju City and Seogwipo City shows a overall stagnation, without changes in policy, existing consumption trends and growth rates will continue in line with regional characteristics. Third, we need a policy that young people flow into by building Jeju Multi-complex Mall where they can eat, drink, and go shopping at once because the number of young tourists and the price they spend are increasing. Furthermore, it is necessary to provide services for life-support related to weather, shopping, traffic, and facilities etc. through analyzing Wi-Fi usage location. Based on the results, we suggests the marketing strategies and public policies for understanding Jeju tourists' patterns and stimulating Jeju tourism industry.

• The Sea:JOURNAL OF THE KOREAN SOCIETY OF OCEANOGRAPHY
• /
• v.16 no.4
• /
• pp.180-195
• /
• 2011

A balanced trophic model for Sinjido marine ecosystem was constructed using ECOPATH model and data obtained 1994 in the region. The model integrates available information on biomass and food spectrum, and analyses ecosystem properties, dynamics of the main species populations and the key trophic pathways of the system, and then compares these results with those of other marine environments. The model comprises 17 groups of benthic algae, phytoplankton, zooplankton, gastropoda, polychaeta, bivalvia, echinodermata, crustacean, cephalopoda, goby, flatfish, rays and skates, croaker, blenny, conger, flatheads, and detritus. The model shows trophic levels of 1.0~4.0 from primary producers and detritus to top predator as flathead group. The model estimates total biomass(B) of 0.1 $kgWW/m^2$, total net primary production(PP) of 1.6 $kgWW/m^2/yr$, total system throughput(TST) of 3.4 $kgWW/m^2/yr$ and TST's components of consumption 7%, exports 43%, respiratory flows 4% and flows into detritus 46%. The model also calculates PP/TR of 0.012, PP/B of 0.015, omnivory index(OI) of 0.12, Fin's cycling index(FCI) of 0.7%, Fin's mean path length(MPL) of2.11, ascendancy(A) of 4.1 $kgWW/m^2/yr$ bits, development capacity(C) of 8.2 $kgWW/m^2/yr$ bits and A/C of 51%. In particular this study focuses the analysis of mixed trophic impacts and describes the indirect impact of a groupb upon another through mediating one based on 4 types. A large proportion of total export in TST means higher exchange rate in the study region than in semi enclosed basins, which seems by strong tidal currents along the channels between islands, called Sinjido, Choyakdo and Saengildo. Among ecosystem theory and cycling indices, B, TST, PP/TR, FCI, MPL and OI are shown low, indicating the system is not fully mature according to Odum's theory. Additionally, high A/C reveals the maximum capacity of the region is small. To sum up, the study region has high exports of trophic flow and low capacity to develop, and reaches a development stage in the moment. This is a pilot research applied to the Sinjido in terms of trophic flow and food web system such that it may be helpful for comparison and management of the ecosystem in the future.

• Journal of Agricultural Extension & Community Development
• /
• v.20 no.4
• /
• pp.1079-1103
• /
• 2013

This study is to identify different characteristics of chinese tourists in relation to food tourism. These features includes motivation, travel behavior, attributions, information source, preference about local food and food tourism. Based on the results from empirical investigation, it develop suggestions for attracting chinese tourism to rural area. The results shows that the strongest motivation is to find new food which is different from daily life. Also, they believed that eating local food is meaningful travel behavior. In addition, this study reveals that the attribution of food selection is highly related to freshness, tastes, and sanitation. Accordingly, this study suggests following guide to attract chinese tourist to rural area. 1) developing unique and authentic local food, 2) preparing extensive menu with meat and local agricultural products & a light menu for breakfast 3) deliberating about freshness and sanitation, 4) creating good appearance and smell.

• Journal of Korea Port Economic Association
• /
• v.32 no.4
• /
• pp.41-56
• /
• 2016

China is pushing a policy called China's Western Development in order to balance the continent's development level. They are connecting the rich natural resources of the mid-western areas and the capital of the eastern coastal areas of China. Since Korea depends on China the most for trade, it is necessary for Korea to always consider the trade scale and pattern changes of China. Response to changes in the transport and logistics system between the two countries is also demanded. This study aims to analyze the import and export trends between Korean and Chinese provinces of each item from the trade scale point of view. China's global trade routes reorganization and China's western development are considered and the corresponding direction is presented accordingly. The study also suggests strategies to expand the import and export scale with China based on the analysis.

• Proceedings of the Korea Water Resources Association Conference
• /
• 2023.05a
• /
• pp.43-43
• /
• 2023

최근 기후변화로 인해 강수량 및 강우패턴이 변화하고 있으며, 기록적인 가뭄이나 홍수와 같은 극한사상의 발생빈도가 점차 증가하고 있다. 국외의 경우 2000년부터 2021년까지 미국 서부 지역에서 극한 가뭄사상이 발생하였으며, 호주에서는 2017년부터 2019년까지 호주 남동부와 뉴사우스웨일스 지역에 극심한 가뭄이 나타났다. 국내의 경우 2000년대에 들어서 가뭄이 국지적으로 빈번하게 발생하고 있으며, 2022년부터 20023년까지 전라남도 지역에 극심한 가뭄이 발생하였다. CMIP6(Climate Model Intercomparison Project Phase 6)는 기후변화에 관한 정부간 협의체(Intergovernmental Panel on Climate Change, IPCC) 6차 평가보고서 (Sixth Assessment Report, AR6)에서 기후 모델 간의 비교와 평가를 위해 설립된 국제 협업 프로젝트로 기후변화를 예측하기 위해 다양한 기후 모델을 사용하여 미래의 기후 시나리오를 제시하였다. SSP (Shared Socioeconomic Pathways) 시나리오는 CMIP6에서 사용되는 미래 사회경제적 발전 경로를 나타내며, 기후변화의 다양한 미래 상황을 평가 및 기후영향을 분석할 수 있다. 국내 논 용수는 주로 저수지와 같은 수리시설물을 통해 공급되는 반면, 밭 용수의 경우 수리시설물로부터 용수를 공급받는 관개전은 일부에 불과하고 대부분의 밭의 경우 용수공급을 강우에 의존하여 가뭄에 더욱 취약한 실정이다. 본 연구에서는 CMIP5 기후모델 기반 RCP (Representative Concentration Pathways) 시나리오 및 CMIP6 기후모델 기반 SSP 시나리오를 적용하여 미래 기후 데이터를 비교하고자 한다. 또한, 미래 기후변화 시나리오를 토양수분모형을 적용하여 미래 밭가뭄을 전망하고자 한다.

• Journal of the Economic Geographical Society of Korea
• /
• v.6 no.1
• /
• pp.21-44
• /
• 2003

It is the Third Italy's industrial districts that is emerging as effective strategies for regional economic development since 1970' s. Compared with mass production system, it's production system is characterized the cooperative networks of a number of enterprise specialized in specific sector or process. This work will analysis the course of growth and industrial characteristics of Modena engineering industrial district and Mirandola bio-industrial district as the exemplary industrial district, so elucidate new principle of building industrial space named development of industrial districts. This work point out three characteristics which these industrial districts have. First, these districts have the production system based vertical dis-integration and specialization among enterprise like general industrial districts in Third Italy. This factor make Modena and Mirandola's production system coupled with specialized enterprise in coping with various demand of consumer. Second, technological innovation is very important factor in growing industrial districts. This factor contributes these two districts to have developed as the competitive industrial clusters in the world. Last point is the difference of local governance by the two city governments. Modena city government has made a lot of industrial spaces but in Mirandola the leading enterprise has contributed to shape the industrial district.

• Korean Journal of Microbiology
• /
• v.54 no.3
• /
• pp.254-265
• /
• 2018

Avian influenza recently damaged the poultry industry, which suffered a huge economic loss reaching billions of U.S. dollars in South Korea. Transmission routes of the pathogens would help plan to control and limit the spread of the devastating biological tragedy. Phylogenetic analyses of pathogen's DNA sequences could sketch transmission trees relating hosts with directed edges. The last decade has seen the methodological development of inferring transmission trees using epidemiological as well as genetic data. Here, I reanalyzed the DNA sequence data that had originated in the highly pathogenic avian influenza H5N8 outbreak of South Korea in 2014. The H5N8 viruses spread geographically contiguously from the origin of the outbreak, Jeonbuk. The Jeonbuk origin viruses were known to spread to four provinces neighboring Jeonbuk. I estimated the transmission tree of the host domestic and migratory wild birds after combining multiple runs of Markov chain Monte Carlo using a Bayesian method for inferring transmission trees. The estimated transmission tree, albeit with a rather large uncertainty in the directed edges, showed that the viruses spread from Jeonbuk through Chungnam to Gyeonggi. Domestic birds of breeder or broiler ducks were estimated to appear to be at the terminal nodes of the transmission tree. This observation confirmed that migratory wild birds played an important role as one of the main infection mediators in the avian influenza H5N8 outbreak of South Korea in 2014.

• Journal of the Korean Society of Hazard Mitigation
• /
• v.8 no.4
• /
• pp.75-79
• /
• 2008

As Information Technology developed, Information requirement has been went higher. In the field of GIS(Geographic Information System) more information is processed more quickly and accurately. Especially, quick analysis of forest fire information (topography, ignition point, weather condition, etc.) over a wide area is essential in order to minimize victim, environmental damage, and economical damage, decide course of evacuating, estimate a fire spread course, and attack resource arrangement. We determined a fire spread distance at each unit time through an experiment with various slope degrees and distinction of flat, upslope and downslope. For the tests on the upslope, as the slope increased, the rate of spread increased. On the downslope in contrast with the upslope, as the slope increased, the rate of spread decreased. We analyzed a spread rate of forest fire on each slope as the method classified upslope(+) and downslope(-) using the results obtained from the experiment. Consequently, the proposed method is able to be used to effectively support the attack of forest fire by providing accurate predictions of fire spread.

• Korea lubricating oil industries association bulletin
• /
• no.18
• /
• pp.12-22
• /
• 1986

국내정유산업의 후방부문인 윤활유사업은 산업의 발전과 함께 국내 진출, 다국적석유기업에 의하여 원료 및 첨가제의 공급에 의한 단순생산과 마아케팅을 하여 국내시장을 지배하여 왔다. 또한 중화학공업의 발달과 함께 산업기계에 요구되는 윤활유제품도 다양화와 품질고급화로 시장구조가 점점 변화되고 있다. 국내윤활유총생산량중 65$\%$의 시장을 가지고 있는 고급윤활유시장은 4개 제조회사에 의하여 96$\%$의 시장을 유지하고 있다. 각 제조회사의 시장확대정책에 의하여 각대리점에 대한 유통경로의 관리가 중요 마아케팅전략음 되고 있는 실정이다. 제조회사의 대형 소비자에 대한 직매, 직영대리점, 일반대리점에 대한 유통기구중 많은 판매비중을 차지하고 있는 일반대리점에 대하여 4P를 기준하여 대리점측 입장에서 마아케팅 믹스를 분석하였다. 제조회사가 판매대리점에 취하는 마아케팅 전략중 직접적인 방법과 간접적인 방법이 시장관리에 나타나는 갈등정도를 가설로 설문지를 작성하여 6월 10일부터 6월 19일까지 경인지역은 조사원에 의한 직접방문과 지방은 등기우편에 의하여 50개 일반대리점에 송부하여 60$\%$의 회수율을 보였다. 응답자료를 통하여 제조회사의 직접적인 시장관리방법과 간접적인 시장관리방법을 사용시 일반대리점에 대한 갈등해소 정도를 상관분석을 통한 통계처리를 하였다. 본 연구결과는 다음과 같은 사실을 얻을수 있었다. 제조회사가 일반대리점에 실시하는 직접적 또는 간접적인 시장관리는 일반대리점에 대하여 갈등해소에 커다란 작용을 하지 못한다. 따라서 제조회사는 유통경로에 대한 전략을 첫째, 일반대리점과 직영대리점과의 시장에 대한 마찰해소 둘때, 대리점에 대한 안정적인 판매이윤제공 셋째, 계획적인 판매대리점간 시장경쟁조정 넷째, R & D 투자강화로 제조회사 차원에서 공동으로 산학협동하여 첨가제 및 상표의 국내개발을 이루어 제품가격인하로 장기적인 시장개발이 요청된다는 결론을 얻었다.

• The Journal of Korean Institute of Communications and Information Sciences
• /
• v.34 no.10A
• /
• pp.736-745
• /
• 2009

The growth of mobile devices and the increase of using them have required the support of realtime multimedia application in wireless environments. Especially, wireless ad-hoc networks without central management system and with dynamically changing network topology need much researches of QoS routing for multimedia applications. However it is impossible to support the hard realtime QoS for these dynamic networks. In this paper, we propose a QoS routing scheme by using QoS DAG that is maintained by each mobile node and contains the QoS information for neighbor nodes. In order to maintain the QoS DAG, each node transmits its QoS information to neighbor nodes by local broadcasting, and the neighbor nodes update their QoS DAGs by the received message. In our proposed scheme, it is possible to search the QoS path efficiently by the QoS DAG without searching it in the whole network.