• Title/Summary/Keyword: Temporal perspective

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Quantification of future climate uncertainty over South Korea using eather generator and GCM

  • Tanveer, Muhammad Ejaz;Bae, Deg-Hyo
    • Proceedings of the Korea Water Resources Association Conference
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    • 2018.05a
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    • pp.154-154
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    • 2018
  • To interpret the climate projections for the future as well as present, recognition of the consequences of the climate internal variability and quantification its uncertainty play a vital role. The Korean Peninsula belongs to the Far East Asian Monsoon region and its rainfall characteristics are very complex from time and space perspective. Its internal variability is expected to be large, but this variability has not been completely investigated to date especially using models of high temporal resolutions. Due to coarse spatial and temporal resolutions of General Circulation Models (GCM) projections, several studies adopted dynamic and statistical downscaling approaches to infer meterological forcing from climate change projections at local spatial scales and fine temporal resolutions. In this study, stochastic downscaling methodology was adopted to downscale daily GCM resolutions to hourly time scale using an hourly weather generator, the Advanced WEather GENerator (AWE-GEN). After extracting factors of change from the GCM realizations, these were applied to the climatic statistics inferred from historical observations to re-evaluate parameters of the weather generator. The re-parameterized generator yields hourly time series which can be considered to be representative of future climate conditions. Further, 30 ensemble members of hourly precipitation were generated for each selected station to quantify uncertainty. Spatial map was generated to visualize as separated zones formed through K-means cluster algorithm which region is more inconsistent as compared to the climatological norm or in which region the probability of occurrence of the extremes event is high. The results showed that the stations located near the coastal regions are more uncertain as compared to inland regions. Such information will be ultimately helpful for planning future adaptation and mitigation measures against extreme events.

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An Analysis on the Spatio-temporal Heterogeneity of Real Transaction Price of Apartment in Seoul Using the Geostatistical Methods (공간통계기법을 이용한 서울시 아파트 실거래가 변인의 시공간적 이질성 분석)

  • Kim, Jung Hee
    • Journal of Korean Society for Geospatial Information Science
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    • v.24 no.4
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    • pp.75-81
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    • 2016
  • This study focused on exploring real transaction price of apartment and spatial and temporal heterogeneity of the variables that influence real transaction price of apartment from the spatial and temporal perspective. As independent variables that are considered to influence real transaction price of apartment, transport, local characteristics, educational conditions, population, and economic characteristics were taken into account. Accordingly, the influence of independent variables and spatial distribution pattern were analyzed from the global and local aspects. The spatial and temporal changing patterns of real transaction price of apartment which is a dependent variable were analyzed. First, to establish an analysis model, OLS analysis and GWR analysis were conducted, and thereby more efficient and proper model was selected. Secondly, to find spatial and temporal heterogeneity of independent variables with the use of the selected GWR model, Local $R^2$ was used for local analysis. Thirdly, to look into spatial distribution of independent variables, kriging analysis was carried out. Therefore, based on the results, it is considered that it is possible to carry out more microscopic housing submarket analysis and lay the foundation for establishing a policy on real property.

Research on Application of Spatial Statistics for Exploring Spatio-Temporal Changes in Patterns of Commercial Landuse (상업적 토지이용 패턴의 시공간 변화 탐색을 위한 공간통계 기법 적용 연구)

  • Shin, Jung-Yeop;Lee, Gyoung-Ju
    • Journal of the Korean Geographical Society
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    • v.42 no.4
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    • pp.632-647
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    • 2007
  • Lots of geographic phenomena have dynamic spatial patterns with time changes, and there have been lots of researches on exploring these dynamic spatial patterns. However, most of these researches focused on the static pattern analysis in a given period, rather than dealing with dynamic changes in the spatial pattern over time with the continual or cumulative perspective. For this reason, investigation of the inertia of spatial process in terms of temporal changes is needed. From this background, the purpose of this paper is to propose the methodology to explore the changes in spatial pattern cumulatively by considering the inertia of the spatial statistics over time, and to apply it to the case study That is, we introduce the new spatial statistic, and produce the z-values of the statistic using Monte Carlo Simulation, and then to explore the changes in spatial patterns over time cumulatively. To do this, the method to combine the J statistic with CUSUM statistic for exploring spatial patterns, and to apply it to the changes in the commercial landuse in Erie County, New York State. Through the proposed method for spatio-temporal Patterns, we could explore continual changes effectively in the spatial patterns reflecting the statistics by temporal spot cumulatively.

A Perspective on Radar Remote Sensing of Soil Moisture

  • Park, Sang-Eun
    • Korean Journal of Remote Sensing
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    • v.27 no.6
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    • pp.761-771
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    • 2011
  • The sensitivity of microwave scattering to the dielectric properties and the geometric structure of soil surfaces makes radar remote sensing a challenge for a wide range of environmental issues directly related to the condition of natural surfaces. Especially, the potential for retrieving soil moisture with a high spatial and/or temporal resolution represents a significant contribution to hydrological and ecological modeling. This paper aims to review the current state of the art in SAR technology and methodological issues towards the discovery of a new potential accurate monitoring of soil moisture changes. In this paper, important parameters or constraints significantly affect the sensitivity of the measurements to soil moisture, such as roughness statistics, spatial resolution, and local topography, are discussed to improve the applicability of SAR remote sensing techniques. This study particularly intends to discuss important notes for developing smart and reliable methods capable of retrieving geophysical information.

Gödel's Hermeneutics of the Relationship between Relativity Theory and Idealistic Philosophy (괴델이 해석하는 상대성이론과 관념론철학의 관계)

  • Hyun, Woosik
    • Journal for History of Mathematics
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    • v.27 no.1
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    • pp.59-66
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    • 2014
  • This interdisciplinary study explores G$\ddot{o}$del's hermeneutics of the relationship between relativity theory and idealistic philosophy in terms of time. For G$\ddot{o}$del, Einstein's contribution to the physical realization of idealistic philosophy would be remarkable. We start with a historical background around G$\ddot{o}$del's paper for Einstein(1949a). From the perspective of G$\ddot{o}$del's cosmology, the second part addresses the relative nature of time, and the next then investigates the rotating model of universes. G$\ddot{o}$del's own results show that the temporal conditions of relativity and idealistic philosophy are satisfiable in the mathematical model of rotating universes. Thus, it could be asserted to travel into any region of the past, present or future, and back again.

Structural Relationship Analysis between Tourists' Time Perception, Perceived Satisfaction and Behavioral Intention of Nostalgic Urban Regeneration Tourist Destination (감성적 도시재생관광지 관광자의 시간관과 지각된 만족, 행동의도 간의 구조관계 분석)

  • Lee, Jae-Dal
    • Land and Housing Review
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    • v.13 no.1
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    • pp.23-38
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    • 2022
  • As city tourism has recently been evaluated as a major indicator of urban competitiveness, strengthening the role of cities as tourist destinations has received more attention. However, industrialization and urbanization of many cities lead to population decline, extinction of traditional industries, and deterioration of living environments, weakening urban functions and competitiveness. Thus, it is essential for declining cities to build a measure to restore urban competitiveness by enhancing urban functions. Accordingly, this study focused on socio-cultural urban regeneration by exploring physical spaces for tourism destinations in declining cities. Different from general tourist destinations, tourism destinations of urban regeneration have a temporal perspective covering the past, present, and future. How does the temporal perspective of urban regeneration tourist destinations affect tourists' satisfaction and behavioral intention? In order to address these questions, this study conducts an empirical analysis based on structural equation modeling (SEM) using the sample of tourists who have visited urban regeneration tourism destinations. With SEM, this paper investigates structural relationships across variables by testing the hypothesis established in the proposed research model. The results show that precious memories of the past are the most important factor for tourists to visit urban regeneration tourist destinations. The empirical findings of this study will contribute to the research areas of urban tourism, urban regeneration tourism, and urban regeneration tourism destinations. In addition, this study can provide practical implications to develop socio-cultural contents of urban regeneration areas as tourism resources to establish plans for urban regeneration projects and achieve sustainable development strategies.

Aesthetic Consciousness and Literary Logic in the Jamesian Transatlantic Perspective: Towards a Dialectic of "a big Anglo Saxon total"

  • Kim, Choon-hee
    • Journal of English Language & Literature
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    • v.57 no.3
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    • pp.367-389
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    • 2011
  • The aesthetic attitude, in general or in particular, represented in matters of taste through aesthetic ideas and value judgments postulates a certain literary logic. And this literary logic reveals itself a sense of morality, philosophy, or moral aesthetic consciousness through the moments of act and thought demonstrated in the characters invented in literary works. Henry James, among many others, offers a very special cultural paradigm for transnational argument because of his diverse ways of shaping transatlantic relations in terms of aesthetic consciousness. And this international paradigm produced varied expressions referring to Henry James as "an American expatriate," "an Anglicized American artist," "a Europeanized aesthete," "a cosmopolitan intelligence," "a bohemian cosmopolitan" to designate his literary career and its characteristics shaped in Europe. Such expressions resonate with Transatlantic Sketches, James's first collection on travel and cultures in 1875 which heralded his long "expatriation" in terms of self-distantiation. James's temperament of mind, far from being always identified with shared values within an ideological framework, never avoided friction with fixed ideas but rather absorbed it fully for another friction which intervenes in his house of fiction. My question arises here regarding his cultural belonging or dislocation: where is the place of his mind or what could be his ultimate destination? In this essay, I'd like to define a place or rather the place of James's literary mind by proving a certain "sympathetic justice" for his literary logic. For this purpose, I'll try to examine: how James used transatlantic perspective, a spatio-temporal assessment to formulate his moral aesthetic consciousness; and how the aesthetic framework functions in assessing his literary logic of aesthetic consciousness. To start with the first argument, I'll analyze some essential aspects of aesthetic attitude of his characters to postulate a persona capable of theorizing James's aestheticism conditioned by the transatlantic context. And for the second argument, I'll examine how the persona functions in formulating a proper cultural stance of James's aesthetic consciousness in transatlantic perspective to illuminate the way of how Jamesian individuality reflects the American mind. This process of theorizing a place of James's own will lead, I hope, to our discovering James's ultimate destination on the assumption that it'll prove or create a certain "sympathetic justice" for his humanist aestheticism, a Jamesian absolute morality.

Experimental Investigation of Macroscopic Analysis of Traffic Safety Using Meta Analysis Focused on Busan Metropolitan City (메타분석을 이용한 교통안전성의 거시적 분석에 대한 실험적 고찰 : 부산광역시를 중심으로)

  • Park, Jongseo;Oh, Yun Pyo;Kim, Hoe Kyoung;Ahn, Woosung
    • KSCE Journal of Civil and Environmental Engineering Research
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    • v.35 no.6
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    • pp.1339-1345
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    • 2015
  • Korean government annually estimates and reports the traffic safety index to evaluate the traffic safety of 228 Gu Gun. However, since the traffic safety index is derived from the spatially macroscopic perspective based on collected relative data, there are a couple of problems such as inability to investigate the individual traffic accidents on the spot, insecurity of accuracy and reliability of traffic safety index estimation method, and absence of establishing temporal relationship of traffic accidents. Thus, this study investigated temporal traffic safety in macroscopic manner for Gu Gun in Busan depending on the installation of the traffic safety facility (i.e., urban median), employing meta analysis. As a result, all Gu Gun in Busan except Saha, Buk, Dong, and Busanjin experienced more traffic accidents after installing the urban median, indicating that there are more rooms for improvement of macroscopic traffic safety evaluation.

The Analytical Study on the Plural Eclecticism and the Aesthetic Characteristics through the Artwork of Vivienne Westwood (Vivienne Westwood 작품에 나타난 미적 특성과 다원적 절충주의 분석 연구)

  • Kim, Young-Sam;Bae, Jung-Min
    • The Research Journal of the Costume Culture
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    • v.14 no.4
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    • pp.657-669
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    • 2006
  • This study is to investigate the previous cases of plural eclecticism through the works of Vivienne Westwood, who contributed to the spread of innovative and eclectic English fashion out to the world as well as to review plurality and its phenomena since the 20th century more systematically. In terms of research methodology, the phenomena of plural eclecticism were examined from social and cultural perspectives, whereas bibliographic research and case study were performed for the phenomena of eclecticism in fashion. From the perspective of plural eclecticism, the results from analyzing the works of Vivienne Westwood by the divisions of temporal eclecticism, spatial eclecticism, and contingent eclecticism are described in the following. First, Vivienne Westwood emphasized historicism tendency of temporal eclecticism. Her efforts to try to modernize history went beyond ages and social classes including men's clothing, prostitutes' costumes, craft items, and dresses for royal family. Second, her spatial eclecticism was reflected on the first collection themes inspired by the American Indians or borrowed from the names of Voodoo in the Tropics. Finally, infra-fashion as an expression of contingent eclecticism of Vivienne Westwood's works can be interpreted as plural eclecticism which shows contingent eclecticism and historic eclecticism at the same time. This study aimed at proving preceding implications concerning recent plural eclecticism through the analysis of the works of Vivienne Westwood who tried a radical design of plural eclecticism in an effort to modernize the tradition of England in the circumstances where a number of trends and styles exist together, with their own uniqueness and values.

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Disrupted Association Between Empathy and Brain Structure in Attention-Deficit/Hyperactivity Disorder

  • Lee, Jeonghwan;Son, Jung-Woo;Kim, Siekyeong;Kim, Ji-eun;Chung, Seungwon;Ghim, Hei-Rhee;Lee, Sang-Ick;Shin, Chul-Jin;Ju, Gawon
    • Journal of the Korean Academy of Child and Adolescent Psychiatry
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    • v.32 no.4
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    • pp.129-136
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    • 2021
  • Objectives: To investigate the relationship between brain structure and empathy in early adolescents with attention-deficit/hyperactivity disorder (ADHD). Methods: Nineteen early adolescents with ADHD and 20 healthy controls underwent 3T MRI. All the participants were assessed for different aspects of empathy using measures including the Interpersonal Reactivity Index and Empathy Quotient. Cortical thickness and subcortical structural volume based on T1-weighted scans were analyzed using FreeSurfer. Results: Cognitive empathy (t=-2.52, p=0.016) and perspective taking (t=-2.10, p=0.043) were impaired in the ADHD group compared with the control group. The cluster encompassing the left posterior insular, supramarginal, and transverse temporal cortices [cluster-wise p-value (CWP)=0.001], which are associated with emotional empathy, was significantly smaller in the ADHD group, and the volume of the left nucleus accumbens was greater than that of the control group (F=10.12, p=0.003, effect size=0.22). In the control group, the left superior temporal (CWP=0.002) and lingual cortical (CWP=0.035) thicknesses were positively associated with cognitive empathy, while the right amygdala volume was positively associated with empathic concern (Coef=14.26, t=3.92, p=0.001). However, there was no significant correlation between empathy and brain structure in the ADHD group. Conclusion: The ADHD group had a smaller volume of the cortical area associated with emotional empathy than the control group, and there was no brain region showing significant correlation with empathy, unlike in the control group.