• 영재교육연구
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• 제22권2호
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• pp.371-386
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• 2012

본 연구는 공간능력이 영재학생들을 판별하는데 중요한 요소로 작용한다는 전제하에 한국의 중학교 영재학생들과 일반학생의 공간능력을 비교하는 것을 주 목적으로 하고 있다. 이를 위하여 한국의 중학생들에게 '퍼듀 공간 시각화 검사: 회전의 시각화(Revised PSVT:R)'를 실시하였다. Revised PSVT:R의 타당도 검증을 위하여 확인적 요인분석을 실시하였으며, 이를 바탕으로 영재 학생들과 일반 학생들의 공간 능력 차이를 비교하였다. 연구 결과, 영재학생들은 일반학생들보다 공간능력에 있어서 훨씬 우수하였다. 공간 능력에 대한 검사 결과를 확장하여 공간능력과 수학, 과학, 언어 분야와의 관계를 살펴보았다. 공간능력은 수학, 과학, 언어분야와 상관관계가 높은 것으로 나타났다. 이상의 연구 결과를 종합하여 볼 때, 공간능력이 우수한 학생과 영재교육에 참여하고 있는 영재학생은 같은 특성이 있는 것으로 판단된다. 따라서 공간능력은 영재학생을 판별하는 중요한 검사도구로 포함되어야 할 것이다.

• 대한수학교육학회지:학교수학
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• 제19권4호
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• pp.663-690
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• 2017

본 연구는 초등학교 수학에서 공간 감각 중 공간 방향 요인과 요소를 살펴보고, 이를 바탕으로 우리나라, 싱가포르, 일본, 중국, 홍콩, 핀란드, 독일, 미국의 교육과정과 교과서에서 다루고 있는 공간 방향과 관련된 내용을 비교 분석함으로써 앞으로 우리나라 초등학교 수학에서 공간 방향 지도를 위한 시사점을 제공하는 데 목적이 있다. 이를 위해 이론적 고찰을 통해 공간 방향 요인과 요소를 알아보고, 이를 기초로 지도 학년과 학년별 내용, 위치, 방향, 좌표, 경로, 거리의 공간 방향 요소와 요소별 내용과 현실 맥락을 중심으로 국가별 교육과정과 교과서를 분석하였다. 이론적 고찰과 교과서 비교 분석 결과 공간 방향 지도를 위한 시사점으로 교육과정에 공간 방향 내용과 기간 확장 및 고학년의 공간 방향 지도 강화, 공간 방향 내용 요소에 대한 기본적인 경험 제공, 학생들 주변의 친숙하고 현실적인 맥락 활용을 제안하였다.

• 대한지리학회지
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• 제39권2호
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• pp.195-211
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• 2004

정보통신기술의 급격한 혁신은 디지털 경제의 도래를 가져왔으며. 정보를 생산ㆍ소비하는데 있어서 인터넷의 중요성을 증대시켰을 뿐만 아니라 상업적 도메인의 급속한 증가를 가져왔다. 도메인이란 인터넷상에서 정보 전달을 위한 주소의 기능을 담당하지만, 실제로 등록된 도메인의 주소는 공간적 특성을 지니고 있다. 본 연구에서는 상업적 도메인의 공간적 분석을 위해 도메인 등록 원시자료를 데이터베이스로 구축하여 공간통계와 지리정보체계를 활용하였다. 서울의 경우 상업적 도메인의 분포는 44%가 단지 3개 구에 집중되어 있을 정도로 매우 불균등하게 나타나고 있으며, 상업적 도메인이 입지한 장소들 간에는 강한 공간적 자기상관을 보이고 있다. 본 연구에서는 상업적 도메인의 공간적 변이에 영향을 주는 요인들을 추출하기 위해 공간적 자기상관을 효율적으로 제거할 수 있는 공간자기회귀모델을 사용하였다. 본 연구 결과, 상업적 도메인 업체들의 선별적 입지와 이들의 경제활동은 동태적인 공간 특성을 보여주면서 도시내부의 공간구조 변화에 영향을 미치고 있다.

• 지식경영연구
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• 제17권3호
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• pp.45-64
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• 2016

As the digital retail environement becomes prevalent, consumers are given greater opportunities to make purchases across physical and digital boundaries. Prior research emphasizes that the attractiveness of the digital or online channel is relatively determined by spatial specifics of physical locations. The overall market trend combined with prior research suggests that understanding spatial specifics becomes a key to managing both offline and online sales performance together. In this study, we focus on geographic variation in sales performance through offline and online channels and aim to investigate the channel-level sales difference between central and subsidiary areas. To this end, we obtain sales data of skincare and makeup products from a leading cosmetic company. Next, we examine spatial autocorrelations in data and then employ the spatial error models to study the effects of spatial specifics. The empirical findings are as follows. First, there are significant differences in category-specific and channel-level sales between central and subsidiary areas. Second, Moran's I statistics demonstrate the spatial autocorrelations of each variable. Third, spatial error models outperform simple regression models with lower AIC values. Finally, spatial specifics play a greater role in understanding online sales in subsidiary areas whereas they exert greater influence on offline sales in central areas. We believe our study advances the related theory and knowledge of multi-channel retailing and also contributes practically to location-dependent multi-channel strategies and sales data analytics.

• Journal of the Korean Data and Information Science Society
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• 제26권3호
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• pp.561-568
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• 2015

이 연구에서는 공간회귀모형 중 공간시차모형과 공간오차모형을 이용하여 대구 경북 지역 단위면적당 아파트 매매가격을 예측하였다. k-최근접이웃 (k-nearest neighbours)을 이용하여 공간가중행렬을 구축하였으며, 이를 이용해 2012년 3월의 단위면적당 아파트 매매가격에 대한 모형을 적합시켰다. 적합시킨 공간시차모형, 공간오차모형을 이용하여 2013년 3월의 단위면적당 아파트 매매가격을 예측하였으며 RMSE (root mean squared error), RRMSE (root relative mean squared error), MAE (mean absolute error)를 통해 두 모형의 성능을 비교하였다.

• 한국소음진동공학회논문집
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• 제17권8호
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• pp.693-700
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• 2007

We can predict spatial acoustic pressure distribution on the plane of interest by using acoustic holography. However, the information embedded in the distribution plot is usually much more than what we need: for example, source locations and their overall propagation pattern. One possible candidate to solve the problem is complex envelope analysis. Complex envelope analysis extracts slowly-varying envelope signal from a band signal. We have attempted to extend this method to space domain so that we can have spatial information that we need. We have to modulate two dimensional data for obtaining spatial envelope. Although spatial modulation basically follows the same concept that is used in time domain, the algorithm for the spatial modulation turns out to be different from temporal modulation. We briefly describe temporal complex envelope analysis and extend it to spatial envelope of 2-D acoustic field by introducing geometric transformation. In the end, the results of applying the spatial envelope to the holography are envisaged and verified.

• 의료ㆍ복지 건축 : 한국의료복지건축학회 논문집
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• 제24권3호
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• pp.17-27
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• 2018

Purpose: This study aims to examine spatial characteristics of emergency department Chronologically through case studies; and to consider the social implication of these spatial changes. Methods: In this study, a total of eight emergency departments, one for each period, were selected in order to analyze the spatial characteristics. The spatial maps of Space Syntax were employed for analyzing case studies. Results: The spatial configuration of emergency department has been changed from five or more emergency department specialties to four or less specialties such as psychiatric, pediatrics, emergency, and trauma. In the case of care initiation area, the concentrated arrangement mode was switched from the distributed arrangement mode. The spatial maps indicate that it can be seen that the tree structure changes to an annular structure emphasizing the connection between the spaces in the emergency department. This shows that the space efficiency, safe, visual control and flexibility in the planning of the emergency department are important factors affecting the spatial structure of the emergency department. Implications: In the future, it is expected that Korean emergency department will be more focused on efficiency, safe, visual control, and flexibility in the planning as in the case studies of the United States.

• 한국실내디자인학회논문집
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• 제20권4호
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• pp.83-91
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• 2011

The purpose of this study is to set a relationship between intentional system and spatial orientation, and with space model in the human world to orient yourself is to present the basic spatial concepts. This is composed of parts of intentional system and spatial orientation on the research. Through the study of intentional system which is based on the orientation with Daniel Dennett's, it suggests the space-model that composed with aspects of intentionality and spatial elements. With space-model and judgement of spatial types, it makes relationship confirm between them. Through this process, following the results of this study were derived. First, intentional stance of space is the key for building knowledge and memories about space, and for identifying external environment images which are experienced in the senses of human. Second, changing the meaning from space to place makes horizons of space broader and creates a new sense of space with put the intentional orientation into the space. Third, this study can make confirm what the aspect of the space-schema-elements for orientation in space, serves as the presentation elements. This study leaps an old-view of the architectural customs about spatial orientation, and creates an opportunity to refine the newer concept of space. This concept of space is a basic essential for 'site-selection' and 'spot-catching' as an intentional system for spatial orientation and to establish a relationship with human beings in the world of his own orientation to the concept of space.

• KIEAE Journal
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• 제11권6호
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• pp.95-100
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• 2011

Although Space Syntax is a well-known technique for spatial analysis, debates have taken place among some researchers because the Space Syntax discards geometric information as both shapes and sizes of spaces, and hence may cause some inconsistencies. Therefore, this study aims at developing methods to recognize and manage spatial shapes for more precise space syntax analysis. To reach this goal, this study employed both a graph theory and binary spatial partitioning (BSP) tree to recognize and manage spatial information. As a result, spatial shapes and sizes could be recognized by checking loops in graph converted from spatial shapes of built environment. Each spatial shape could be managed sequentially by BSP tree with hierarchical structure. Through such recognition and management processes, convex maps composed of the fattest and fewest convex spaces could be drawn. In conclusion, we hope that the methods developed here will be useful for urban planning to find appropriate purposes of spaces to satisfy the sustainability of built environment on the basis of the spatial and social relationships in urban spaces.

• 한국측량학회지
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• 제32권3호
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• pp.225-231
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• 2014

When a spatial regression model that uses kernel density values as a dependent variable is applied to retail business data, a unique model cannot be selected because kernel density values change following kernel bandwidths. To overcome this problem, this paper suggests how to use the point pattern analysis, especially the L-index to select a unique spatial regression model. In this study, kernel density values of retail business are computed by the bandwidth, the distance of the maximum L-index and used as the dependent variable of spatial regression model. To test this procedure, we apply it to meeting room business data in Seoul, Korea. As a result, a spatial error model (SEM) is selected between two popular spatial regression models, a spatial lag model and a spatial error model. Also, a unique SEM based on the real distribution of retail business is selected. We confirm that there is a trade-off between the goodness of fit of the SEM and the real distribution of meeting room business over the bandwidth of maximum L-index.