• Proceedings of the National Institute of Ecology of the Republic of Korea
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• 제4권1호
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• pp.1-8
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• 2023

In this study, we aimed to quantify the population size and spatial distribution of three predatory Scarites species in coastal sand dunes. In June and August 2014, 252 pitfall traps were utilized to conduct a trapping web analysis at three distinct sites with varying vegetation dominance values. Scarites sulcatus had the largest estimated population in a 10 m² area with a habitat density of 36.6 in a Vitex rotundifolia community area (site B) in the June survey. In contrast, Scarites aterrimus had the largest population size with a habitat density of 2.9 in a Calystegia soldanella community area (site A) in the August survey. Spatial distribution analysis revealed that S. sulcatus dominated the Vitex rotundifolia community without preference for a particular site, whereas S. aterrimus and Scarites terricola pacificus were primarily observed on the beach. The results indicated that the three Scarites species in the Sohwang coastal sand dune region exhibited differences in their spatial and temporal distributions in the coastal dune ecosystem in order to avoid competition and predation. In conclusion, our findings can be utilized to estimate the population density of the genus Scarites on the Korean Peninsula. The outcomes of this study will contribute to estimating insect population densities on the Korean Peninsula and developing investigative assessment methodologies.

• 한국실내디자인학회논문집
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• 제21권2호
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• pp.163-173
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• 2012

In this study, the spatial analysis of the multi-housing unit plans was investigated since 1990 for the winners at the architectural competition which was held nationwide in Germany. The investigation was carried out from January in 1990 to December in 2010. 201Unit plans were analyzed. Space syntax model is used as analyzing tool of the Unit plans. The results of the study indicate followings: 1) The interior spaces in 3LDK types and 4LDK types, ordered by high value of integration are; (1) corridor, (2) entrance hall, (3) living room, (4) dining room. 2) The value of integration for the kitchen is higher in L/DK type than in LD/K type, and that for the living room is higher in LD/K type than in L/DK type. The mean value of integration for L/DK type is higher than that for LD/K type. This means that traffic line efficiency of L/DK type is higher than that of LD/K type. 3) The value of integration for corridor and entrance hall is gradually lower in recent years. That is, the type of Unit plans are changing from corridor types to hall types.

• 경영과학
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• 제26권3호
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• pp.67-78
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• 2009

In this paper, I analyze the mobile broadband services market characterized by vertical and horizontal differentiation. Vertical differentiation as service quality differentiation is based on the transmission speed of mobile internet service and horizontal differentiation as spatial differentiation is based on the service coverage. Theoretical explanations for the competitive price policy have been developed in the game context of WiBro which represent the high quality within the limited service coverage and HSDPA which represent relatively low quality with nation-wide service. When the WiBro has a mobile broadband service quality advantage and the difference in quality is sufficiently low, the price of WiBro with limited service coverage is relatively lower than that of HSDPA. This occurs because the advantage of WiBro's vertical service differentiation is offset by the disadvantage of horizontal differentiation. The difference in the quality of mobile internet service, however, is not too high, the price of WiBro is relatively higher than that of HSDPA. Moreover, when the service quality of WiBro is sufficiently high, the low quality HSDPA service faces no demand.

• 한국디지털건축인테리어학회논문집
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• 제12권1호
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• pp.15-23
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• 2012

Museums in Korea have a long history of 100 years. It is not too much to say, though, that in fact, they in the history have lasted only for 20 to 30 years. Daejeon World Expo in 1993 and the foundation of local governments in 1995 not only played an important role in the growth of museums, but also affected the spatial development in terms of architecture and exhibition. Based on the theoretical background of museums' historical, formative, and exhibition-spatial changes, this study grasps the changes in public museums established during the last 20 to 30 years, and analyzes the changing roles of museums in the future. The preliminary study shows that the formative and spatial changes of museums partially resulted from the changes in visitors' pattern. Besides, as a result of the utilization of PEST Analysis, a macroscopic competition analysis method, it turned out that the construction of public museums in Korea was promoted with in mind the political and social significance after the establishment of the autonomous government. For unique museums to be established in local regions, it is necessary to proceed with a consistent investigation on museums in various perspectives rather than merely relying on the administrative exhibition services led by the organizations.

• 대한건축학회논문집:계획계
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• 제33권12호
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• pp.73-83
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• 2017

Due to the changes in the contemporary society, small-scale traditional markets have declined and lost their functions as the center of neighborhood commercial and cultural affairs. While most traditional markets are deteriorating, there exist rare cases of neighborhood small-scale traditional markets that continuously maintain their vitality and popularity. This paper examines urban spatial characteristics of those markets. As for the cases, this paper inventoried eighteen such markets in Gwanak-gu, Seoul. The research methods include literature reviews, on-site investigation of total 18 such markets, and participant observations. The findings of this paper are as follows: There are distinctive differences in the urban-spatial characteristics of physical environmental factors between the revitalized markets and declining markets. In terms of neighborhood and commercial environment, the franchised super-markets are not necessarily in competition with small-scale traditional markets. The former often has symbiotic relationship the latter, if the small scale traditional markets are strategically located in between residential areas and subway stations, providing active pedestrian networks. There are many outdoor display stands in the revitalized markets, while the declining markets rarely have them. The market improvement projects such as transforming the open space into arcade space, hardly have effects on revitalization of the small-scale traditional markets.

• 한국BIM학회 논문집
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• 제11권2호
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• pp.43-53
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• 2021

The 'public agency oil joint purchase system' was introduced to lower public sector oil prices and contribute to the stability of the overall consumer oil market. The present study used spatial regression to analyze the factors affecting domestic gasoline price, focusing on the impact of potential implicit collusion among gas stations in determining domestic gasoline prices. Also, this study investigated the effect the location characteristics of the market convention gas stations and government offices on the pressure of price competition in the market and the gasoline price at general gas stations. To summarize the results of the spatial lag model (SLM), the individual characteristics of gas stations such as convenience stores (+), self-fuelling (-), commercial areas (+), subway stations (+), population density (-), and sales (-) are correlated to gasoline prices at gas stations, and the institutional location factors of gas stations (+) affected the average of 9 won per liter, 11 won per liter. In order to solve these problems, the establishment of a monitoring system reflecting the location characteristics of the region and the ongoing review of the system should be carried out. In addition, separate, expanded and promotional measures should be prepared for the convenience of general and public oil buyers.

• ALGAE
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• 제37권1호
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• pp.63-74
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• 2022

Perennial stipitate kelps are globally distributed and individual species can inhabit broad latitudinal ranges, expressing notably longevous persistence. Despite the foundational role kelps provide to their communities, little is known about the variability in persistence of the stipitate kelps at local spatial scales. We studied the population persistence of Eisenia arborea, a heat- and wave force-tolerant perennial stipitate kelp with a distributional range extending from British Columbia to south of the range limit of all other northeast Pacific kelps, in Baja California Sur, Mexico. Persistence characteristics for E. arborea among sites were compared and used to test the hypothesis that stand persistence varied at local spatial scales around Isla Natividad, a Pacific island off the Baja California peninsula with documented spatiotemporal environmental heterogeneity. Collected individuals around the island were "aged" using the previously validated age estimation technique of counting annual cortical dark rings. After detecting no significant differences among sites in the covariation between estimated ages for collected individuals and stipe length, we utilized in-situ population-level stipe length measurements to more rapidly predict age structures within six stands around the island. Predicted age structures, and associated stand densities, revealed persistence characteristics and density varied at local scales and a strong positive relationship existed between stand density and stand mean and maximum ages. We speculate that stands responded differently to deterministic influences (e.g., the 2014-2016 marine heatwave and / or competition with Macrocystis) resulting in heterogenous local persistence of this foundation species.

• 무역학회지
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• 제47권2호
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• pp.175-193
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• 2022

This study analyzes the effects of road transportation networks on the local economy in korea. The analysis methods are SNA and spatial panel regression model. The subjects of this study are inland areas of Korea, and the research period is from 2010 to 2019. The network analysis showed that the connection centrality of Gyeongg-do was high internally and externally. Gyeonggi-do has played a central role in the domestic road freight transportation industry. The results of spatial panel regression analysis showed that there was economic competition between regions. Domestic road transportation industry has been competitive among regions and has economic ripple effect. And Internal cargo has been shown to boost the economy of the region. But internal cargo has been shown to lower the economy of surrounding regions, but external cargo has been shown to increase the economy. In order to revitalize the local economy, it is necessary to increase road cargo.

• Asia Marketing Journal
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• 제15권1호
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• pp.107-128
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• 2013

본 연구의 목적은 유통업태 간 경쟁이 격화되고 있는 시점에서 주요 유통업태 간 소비행태 분석을 통해 소비자 지향의 전통시장 활성화 정책을 제시하는데 있다. 주요 유통업태 간 공간적 경쟁구도가 소비행태에 미치는 영향을 알아보기 위해 다중회귀분석을 이용하여 전국 6개 도시에 거주하는 613명의 소비자를 대상을 실증분석 하였다. 본 논문은 크게 3개의 요소들이 소비행태에 영향을 미치는 것을 확인하였다. 분석 결과 물리적 요인(전통시장까지 소요시간), 사회경제적요인(승용차 보유대수, 월평균 소득), 경쟁적 요인(공간적 경쟁구도의 강함과 중간, 대형마트 월평균 지출액)이 소비행태에 유의한 영향을 미치는 것으로 분석되었다. 이러한 결과를 바탕으로 정부는 고객들의 소비행태에 영향을 미치는 요소들을 선별적으로 고려하여 전통시장 활성화 정책을 추진 할 필요가 있다.

• 생태와환경
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• 제54권4호
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• pp.363-373
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• 2021

생태적 지위는 생물 종이 차지하는 특정 지위 또는 역할로 시간과 공간, 먹이자원에 의해 주요한 영향을 받으며, 중첩 정도에 따라 종간 경쟁관계를 밝혀낼 수 있기 때문에 지리정보시스템을 기반으로 다양한 연구들이 수행되고 있다. 본 연구에서는 한국에 서식하고 있는 Pelophylax속 참개구리(P. nigromaculatus)와 금개구리(P. chosenicus) 두 종의 공간적 생태정보를 통해 생태적 지위를 알아보고, 지리적 분포 범위를 예측하여 종간 공존지역과 분포 패턴에 대하여 알아보았다. 그 결과 두 종의 분포에 영향을 끼친 주요 변수는 고도로 확인되었으며, 고도는 종들이 분포한 기후와 상관관계를 나타내고 있었다. 두 종이 분포한 생태적 지위는 매우 높게 중첩되어 있었으며, 참개구리가 분포한 지역은 금개구리가 분포한 대부분 지역을 포함하는 동소적인 분포 패턴을 보였다. 공존하고 있는 지역에서 두 종이 출현한 지점들은 음의 상관관계를 나타내고 있어, 약한 경쟁이 발생하고 있음을 암시했다. 비록 본 연구에서는 종간 동소적 분포 형태를 나타낸 원인과 경쟁관계에 영향을 주는 주요한 요인에 대해서는 확인하지 못했지만, 추후 미시적인 관점에서 두 종이 함께 공존하는 지역을 대상으로 다양한 환경변수들에 대한 보다 세밀한 분석(필지, 수로, 논둑 등)이 수행된다면 종간 경쟁을 최소화하는 다양한 기작들을 확인할 수 있을 것이라고 판단된다.