• Title/Summary/Keyword: Spatial Concept

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The Impact of Climate Change on Sub-daily Extreme Rainfall of Han River Basin (기후변화가 한강 유역의 시단위 확률강우량에 미치는 영향)

  • Nam, Woosung;Ahn, Hyunjun;Kim, Sunghun;Heo, Jun-Haeng
    • Journal of Korean Society of Disaster and Security
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    • v.8 no.1
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    • pp.21-27
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    • 2015
  • Recent researches show that climate change has impact on the rainfall process at different temporal and spatial scales. The present paper is focused on climate change impact on sub-daily rainfall quantile of Han River basin in South Korea. Climate change simulation outputs from ECHO-G GCM under the A2 scenario were used to estimate daily extreme rainfall. Sub-daily extreme rainfall was estimated using the scale invariance concept. In order to assess sub-daily extreme rainfall from climate change simulation outputs, precipitation time series were generated based on NSRPM (Neyman-Scott Rectangular Pulse Model) and modified using the ratio of rainfall over projection periods to historical one. Sub-daily extreme rainfall was then estimated from those series. It was found that sub-daily extreme rainfall in the future displayed increasing or decreasing trends for estimation methods and different periods.

Intermediate Principal Stress Dependency in Strength of Transversely Isotropic Mohr-Coulomb Rock (평면이방성 Mohr-Coulomb 암석 강도의 중간주응력 의존성)

  • Lee, Youn-Kyou
    • Tunnel and Underground Space
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    • v.23 no.5
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    • pp.383-391
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    • 2013
  • A number of true triaxial tests on rock samples have been conducted since the late 1960 and their results strongly suggest that the intermediate principal stress has a considerable effect on rock strength. Based on these experimental evidence, various 3-D rock failure criteria accounting for the effect of the intermediate principal stress have been proposed. Most of the 3-D failure criteria, however, are focused on the phenomenological description of the rock strength from the true triaxial tests, so that the associated strength parameters have little physical meaning. In order to confirm the likelihood that the intermediate principal stress dependency of rock strength is related to the presence of weak planes and their distribution to the preferred orientation, true triaxial tests are simulated with the transversely isotropic rock model. The conventional Mohr-Coulomb criterion is extended to its anisotropic version by incorporating the concept of microstructure tensor. With the anisotropic Mohr-Coulomb criterion, the critical plane approach is applied to calculate the strength of the transversely isotropic rock model and the orientation of the fracture plane. This investigation hints that the spatial distribution of microstructural planes with respect to the principal stress triad is closely related to the intermediate principal stress dependency of rock strength.

A Study on the Result of Application of Designation Criteria for Urban Regeneration Activation Zone by the Spatial Range (공간적 범위의 차이에 의한 도시재생 활성화지역 지정기준 적용 결과에 관한 연구)

  • Lee, Jong Hwi;Lee, Tae Hee
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.21 no.10
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    • pp.567-573
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    • 2020
  • This study was done to develop indicators for cities that can be used in the long term and in a sustainable manner. Activation indicators were developed to improve the resilience in the downtown area of Seo-gu, Incheon. Preliminary indicators were derived from prior studies on similar indicators of resilience for urban regeneration, and an expert opinion survey was conducted to analyze the suitability and importance of the indicators. Activation indicators were established for improving urban resilience in six areas: population stability, social inclusion, industrial diversity, local productivity, environmental sustainability, and social-based convenience. From 60 preliminary indicators, 42 indicators were selected through the expert opinion surveys for securing an economically active population, establishing a living infrastructure, improving the settlement environment, and upgrading industry to reflect the characteristics of the West, including industrial complexes. It was found that diversification is necessary. Further study is still necessary to improve the objectivity of the indicators and calculate a resilience index. The significance of this study is that it looks at quantitative indicators, complements other studies on regional decline diagnosis, and presents realistic alternatives suitable for domestic situations based on the concept of resilience.

A Study on the Contemporary Definition of 'GARDEN' - Keyword Analysis used Literature Research and Big Data - ('정원'의 시대적 정의에 관한 연구 - 문헌연구와 빅데이터를 활용한 키워드 분석을 중심으로-)

  • Woo, Kyungsook;Suh, Joo Hwan
    • Journal of the Korean Institute of Landscape Architecture
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    • v.44 no.5
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    • pp.1-11
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    • 2016
  • There has been an increasingly high interest in gardens and garden design in Korea recently. However, the usage of the term 'garden' is extremely varied and complex, and there has been very little academic research made on the meaning of garden. Therefore, this research attempts to investigate the ideas of current gardens and to elucidate their changing patterns by means of extensive literature research and big data analysis. The notion of garden in the past was broad including not only private space such as Madang(마당) and Teul(뜰), but also even field and grass land as public outdoor space. Yet, the meaning has become smaller to merely private space due to the change of dwelling systems due to high industrial development of the 20th century. Furthermore, the introduction of urban parks as an interactive space between nature and humans, the similar spatial function of gardens, has blurred the boundary between garden and park, which created confusion in understanding the concept of a garden. After all, garden is a subject for humans. The meanings of garden need to be recognized from various points of view since garden itself is a creation by the sum of diverse fields such as natural and social sciences as well as culturology. This discussion on the meaning of garden in the present day will give a conceptual foundation for future research on gardens and garden design. Also, the big data analysis employed here as a research method can help other similar research topics, particularly semantics in landscape architecture.

Concepts and functional characteristics of consciousness in comparison of memory and attention (기억과 주의와의 비교를 통한 의식의 개념과 기능적 특성)

  • Kim, Eun-Sook;Shin, Hyun-Jung
    • Korean Journal of Cognitive Science
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    • v.21 no.4
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    • pp.559-602
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    • 2010
  • This study examines the concepts and functional characteristics of consciousness in comparison of memory and attention from the perspective of information processing. It also provides an understanding of the relationships between the three as hypothetical constructs. Consciousness is regarded as too ambiguous a concept to be understood and accepted as a mental construct without the inclusion of memory and attention in any conceptualization. We need one criterion to count satisfactorily as an explanation of consciousness in information processing. Consciousness would be a subjective awareness of momentary experience and also have the characteristic of an operating system performing control and consolidation in information processing. This could be called cognitive consciousness which refers to a subjective awareness and an executive control system, even though those are not equivalent concepts. Consciousness, memory and attention, three mental constructs could operate dependently or independently depending on the specific tasks conditioned in many information processing levels whose modules with three mental constructs could operate in hierarchy. In this premise, working memory could not be a unitary system, contrary to those of Baddeley and Hitch(1974) and Baddeley(1992, 2000), just being a mental workplace consisting of two components: the phonological loop, and the visual-spatial sketchpad without the episodic buffer and a central executive which are the characteristics of consciousness. In the continuum of information processing, the conscious processes and the unconscious processes seem not to be totally different and contrasting processes.

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Application of Flood Discharge for Gumgang Watershed Using GIS-based K-DRUM (GIS기반 K-DRUM을 이용한 금강권 대유역 홍수유출 적용)

  • Park, Jin-Hyeog;Hur, Young-Teck
    • Journal of Korean Society for Geospatial Information Science
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    • v.18 no.1
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    • pp.11-20
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    • 2010
  • The distributed rainfall-runoff model which is developed in the country requires a lot of time and effort to generate input data. Also, it takes a lot of time to calculate discharge by numerical analysis based on kinematic wave theory in runoff process. Therefore, most river basins using the distributed model are of limited scale, such as small river basins. However, recently, the necessity of integrated watershed management has been increasing due to change of watershed management concept and discharge calculation of whole river basin, including upstream and downstream of dam. Thus, in this study, the feasibility of the GIS based physical distributed rainfall-runoff model, K-DRUM(K-water hydrologic & hydraulic Distributed RUnoff Model) which has been developed by own technology was reviewed in the flood discharge process for the Geum River basin, including Yongdam and Daecheong Dam Watersheds. GIS hydrological parameters were extracted from basic GIS data such as DEM, land cover and soil map, and used as input data of the model. Problems in running time and inaccuracy setting using the existing trial and error method were solved by applying an auto calibration method in setting initial soil moisture conditions. The accuracy of discharge analysis for application of the method was evaluated using VER, QER and Total Error in case of the typhoon 'Ewiniar' event. and the calculation results shows a good agreement with observed data.

GIS-Based Suitable Site Selection for Aquaculture Using Scope for Growth of Styela Clava (GIS 기반의 미더덕 SFG(Scope for Growth)를 이용한 양식장의 적지선정)

  • Park, Jung-Hyun;Suh, Yong-Cheol
    • Journal of the Korean Association of Geographic Information Studies
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    • v.16 no.3
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    • pp.81-90
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    • 2013
  • The purpose of this paper is to do GIS-based suitable site selection using Scope for Growth index of Styela clava in Jindong Bay. The aquaculture of Styela calva is only conducted in Korea, especially Jindong Bay. Suspended culture of Styela clava was initiated in 2001 and the annual production reached 15,084M/T, but declined to 1,412M/T in 2005. The annual production was increased slightly to 2,484M/T in 2012 but the production is lower than the beginning yield. Scope for Growth(SFG) can indicate interrelationships between environment and organism growth index in aquaculture. GIS-based suitable site selection can be available by the concept of SFG, and fishery management system can be constructed for the sustainable production. As a result of the assessment of habitat suitability, Jindong Bay's SFG value ranges 0.054~0.57J/day and Styela clava farm's SFG values range 0.054~0.57J/day, either. The correlation between Styela clava farm's SFG and the actual production has a good result, as r=0.786, p<0.05. The construction of fishery management system using habitat suitability index ensures the reasonable site selection and the sustainable production in aquaculture farm. It introduces an objective method for the interrelationships between the environmental variation and the organism growth. Consequently, it can promote the decision making practices for the sustainable fishery management.

A Study on the Types of Love in and : Focusing on Plato's Theory of Eros (<센과 치히로의 행방불명>과 <하울의 움직이는 성>에 나타난 사랑의 유형에 대한 연구: 플라톤의 에로스론을 중심으로)

  • Kim, Min-Kyu
    • Cartoon and Animation Studies
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    • s.43
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    • pp.1-22
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    • 2016
  • So far, the Studio Ghibli's major masterpieces, and have been studied extensively from mythical and psychological perspectives due to the films' intrinsic symbolism within their characters and events. However, there have been insufficient in-depth research on the types of love the two works have. Therefore, this study will focus on how the types of love in the two animations mirror the concept of love in Plato's theory of Eros through the analysis of two films' characters. The desire for memory and recovery can be seen in , and glimpses of each phase of aim towards changes in physical appearance can be shown in . These describe the function and the purpose of Eros that Plato states in Socrates' terms in Phaedrus and Symposium. Plato ultimately defined Eros as a spirit that leads to the world of Ideas and suggested the five stages of love that are divided in accordance with the ultimate purpose and attitude of mankind towards Eros. The cognition area, changes in appearance of the characters and spatial ranks in and critically reveal such core concepts of the theory of Eros. It is noteworthy that the two works show the origin of the most universal ideology of the West. These two animation films are particularly significant in terms of that they reflect the western epistemology while covering exclusive and covert ethnic emotions.

A Study on the Cadastral Characteristics of Dokdo-ri (독도리의 지적 특성 연구)

  • Lee, Beom-Gwan
    • Journal of Cadastre & Land InformatiX
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    • v.49 no.2
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    • pp.5-21
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    • 2019
  • The purpose of this study is to investigate and analyze the cadastral transformation process of Dokdo-ri based on the institutional concept of the cadastre, while presenting the cadastral characteristics of Dokdo-ri therefrom. For this purpose, both the literature search method and the Internet search method were used. As for the analysis method, descriptive analysis method and comparative analysis method were used. The findings support that the cadastral characteristics of Dokdo-ri is drawn as follows: First, from the physical point of view, the cadastral characteristics of Dokdo-ri shows that the territory is given by the smallest lot numbers in the country and that the territory is also given by the land lot number consisting of small size lots without continuing the ground for which the cadastral resurvey project was carried out for the first time. Second, in terms of the rights, the cadastral characteristics of Dokdo-ri shows that the entire area given by the lots is owned by a single owner and no ownership has been changed. Third, in terms of its value, the cadastral characteristics of Dokdo-ri shows that it is the only area given by the lots of which the officially assessed individual land price has never been decreased in the entire lots. Fourth, when it comes to presenting the cadastral characteristics of Dokdo-ri in terms of the use control/restriction, the consciousness of preserving Dokdo-ri and the consciousness of enhancing real territory are confronted but due to the Cultural Heritage Protection Act etc, the cadastre turned out to be a very passive cadastral work.

A Study on the Sequence Analysis Technique of Urban Landscape Color and Urban Color Characteristics in accordance with Spatial Openness - Focusing on the View of the Daegu Monorail - (도시 경관색채의 시퀀스 분석기법과 공간 개방도에 따른 도시색채 특성연구 - 대구광역시 지상철 조망을 중심으로 -)

  • Koo, Min-Ah
    • Journal of the Korean Institute of Landscape Architecture
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    • v.44 no.6
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    • pp.120-136
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    • 2016
  • This study, views the color of scenery not as a static state, but rather as a continuous sequence of perceptions that incorporates the concept of time. This study derived techniques to quantitatively analyze the flow and data from this sequence. By utilizing this, urban color trends can be based on openness. This is very close to what would be experienced by an actual viewer: it extracted color data and visual amount from frames at 2-second intervals by shooting a video of the color sequence of the city as seen from both the left and right sides from the inside of the monorail (line 3 of the Daegu urban railway). These images were classified by color group, brightness, chroma, high chroma distribution derived techniques such as openness of space, brightness level, clarity level, high-chroma distribution and code, advantage of visual amount, dominant factor exposure, hot and cold color image and dynamic of sequence rhythm. During the derived sequence, the data determines the openness in the visual amount of sky and it was found that the tendency of the colors of the city was opening regression analysis. The more colorful the city is opening the brightness is lowered, the chroma increased slightly, cold colors significantly increased, which also had a very deep relationship with Lynch enclosed proportion, color change of the city trends through the actual scenery could grasp in more detail.