• 응용통계연구
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• 제25권2호
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• pp.293-300
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• 2012

지역 또는 도메인에 작은 크기의 표본이 배정되어 추정의 정도가 낮을 때 사용하는 통계적 기법인 소지역추정에 관한 많은 연구가 진행되고 있다. 소지역추정에 사용되는 자료는 단위수준자료(unit level data)와 지역수준자료(area level data)로 분류된다. 본 논문에서는 단위수준자료를 이용하여 소지역추정을 실시한 후 얻어진 추정값에 공간통계분석기법을 도입하여 최종적인 소지역추정값을 얻는 이단계 소지역추정법을 제안하였다. 제안된 소지역추정법은 단위수준자료가 갖고 있는 정보와 지역수준자료가 갖고 있는 공간정보를 모두 이용하는 방법으로 추정의 정도를 높일 수 있는 새로운 방법이다. 본 논문에서는 경제활동인구조사 자료를 이용한 모의실험을 통해 이단계 소지역추정법의 우수성을 확인하였다.

• 대한공간정보학회지
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• 제24권1호
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• pp.25-33
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• 2016

포인트 속성의 위치 기반 소셜 네트워크 서비스(Location-Based Social Network Services, LBSNS) 데이터를 멀티스 케일의 타일맵상에 효과적으로 시각화하기 위해서는 격자 기반으로 군집화하여 표현해야 할 필요성이 있다. 이때 격자의 크기 및 개수를 결정해야 하는데, 이에 대한 기준은 정해진 것이 없으며 데이터의 종류와 분석 목적에 따라 달라지므로 연구자의 주관이 개입될 수밖에 없다. 이때 연구 결과에 영향을 끼치는 공간단위 임의성의 문제(Modifiable Areal Unit Problem, MAUP)가 발생한다. 본 연구에서는 LBSNS 중 지오태깅(geotagging)된 트위터(Twitter) 데이터를 대상으로 하여 이러한 MAUP의 영향을 스케일 효과(scale effect)의 측면에서 탐색해 보고자 하였다. 이를 위해 공간오차모델(spatial error model)을 이용하여 데이터의 공간적 자기상관성(spatial autocorrelation)의 정도를 조절하였으며, 이에 대해 격자의 크기를 달리함에 따른 공간적 자기상관성의 변화를 Moran's I를 통해 분석하였다. 실험 결과, 원 데이터에는 양의 공간적 자기상관성이 존재하는 것을 확인하였으며, 이러한 경우에는 공간오차모델의 공간자기회귀계수(spatial autoregressive coefficient)의 값이 증가할수록 공간적 자기상관성이 감소하는 것을 알 수 있었다. 이러한 특성을 이용하여 트위터 데이터의 공간적 자기상관성의 강도를 5단계로 조절하였으며, 각 단계에 대하여 격자의 크기를 9단계로 나누어 각각에서의 Moran's I를 계산하였다. 그 결과, 합역 수준이 높아질수록 공간적 자기상관성이 증가하다가 격자의 크기가 600m에서 1,000m 사이일 때 감소하는 것을 알 수 있었으며, 공간적 자기상관성이 강할수록 MAUP에서의 스케일 효과는 감소하는 경향이 있는 것을 확인하였다.

• Journal of applied mathematics & informatics
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• 제7권3호
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• pp.925-940
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• 2000

The spatial spread of a disease in an SIRS epidemic model with immunity imparted by subclinical infection on a population has been considered. The incidence rate of infection and the rate of immunization are both of nonlinear type. The dynamics of the infectious disease and its endemicity in local and global sense have been investigated.

• Spatial Information Research
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• 제23권6호
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• pp.67-75
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• 2015

오늘날 인간의 정주공간이 도시로 집중화되면서 도시 생활공간의 복잡화, 다양화, 고도화 되는 상황을 고려한 도시계획 관리기법의 개발이 요구되고 있는 실정이다. 특히, 대형화 다양화되고 있는 기후변화 재해에 효율적으로 대응하기 위해서는 도시의 재해 취약성에 대한 분석에 근거한 토지이용, 기반시설 등을 계획하는 도시계획이 필요하다. 이러한 관점에서 도입된 도시 기후변화 재해취약성 분석(UC-VAS)제도는 현재 집계구단위 분석방식으로 운영됨으로 도시계획활용을 위한 세부적인 구역검토가 어려운 실정이다. 이에 분석단위를 격자방식으로 변경하고 2개 지자체를 대상으로 분석하여 해당결과를 비교검토하였다. 분석결과 집계구 단위보다 세부적인 결과도출이 가능하며, 항공영상과의 현황비교결과 세부적인 구역설정이 가능한 결과를 마련할 수 있었다. 이와 같은 비교검토결과와 더불어 분석지표에 따라 격자단위 결과 활용에 문제점이 발생됨을 발견함으로써 향후 도시기후변화 재해취약성 분석제도의 과학성과 객관성을 추가 확보하는 전문적인 방안을 제시함으로써 제도운영의 효율성을 기대한다.

• 의료ㆍ복지 건축 : 한국의료복지건축학회 논문집
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• 제19권3호
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• pp.21-28
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• 2013

Purpose: General hospital in korea is getting large-scaled, specialized and upgraded. So, nursing unit of race track type has been advanced along with a spatial organization, building equipment and environmental approach. This study is to search the guidelines for renovation of nursing unit with race track type in the case of K university hospital in Daejeon. Methods: 9 cases of recently opened general hospital has been analyzed for spatial and environmental design solution. Questionnaires and interviews about user needs of nursing staff, patient and visitors, have been conducted for a nursing care system and facility of nursing units in K university hospital. Results: The user needs are represented as followings. Center core public zone in each floor plan and center core nursing station and supporting areas in nursing unit are good for an adjacency and separation of spatial organization. Toilet of group patient room is necessary to equip for easy, safe and infective aspects, and so toilet install will decrease the patient number and increase the nursing care service. Hall type of station front is good for visibility and observation. It is appropriate to renovate into south facing group patient room for privacy, enough space for nursing care facility and supporting area, enough width of door to move portable medical equipment, room for medical doctor and practical student, noise absorbing of day room. Implications: Upgrading the nursing care service and facility equipment is necessary to reflect the user needs and cooperate with hospital management.

• 한국정보처리학회논문지
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• 제6권10호
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• pp.2630-2641
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• 1999

Most of the previous game development has proceeded in the approaches of the temporal-oriented synchronization because of producing game objects by using general authoring tools, and ad hoc or trial and error methods has been devised for representation of spatial concept. This paper is a study on the unification notation for spatio-temporal synchronization to conquest this fault. First of all, we classify game space as temporal object, spatial object, absolute/relative spatio-temporal space. The spatio-temporal relationships are divided into temporal extent, temporal location, spatial extent, and spatial location. In the paper the temporal and spatial relationships of game scene are defined to represent the synchronization, and we propose new unification notation by temporal and spatial concept to represent two concepts putting emphasis on space. Their relationships are presented on 3D by creating time axis related with time in scene unit of the two dimensional plane in the pivot on space. The usability of this representation method are shown by applying examples of game scenario.

• 한국컴퓨터정보학회논문지
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• 제24권8호
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• pp.137-142
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• 2019

This paper proposed bitmap based spatial data transmission scheme in need of rapid transmission through network in mobile environment that use and creation of data are frequently happen. Former researches that used clustering algorithms, focused on providing service using spatial data can cause delay since it doesn't consider the transmission speed. This paper guaranteed rapid service for user by convert spatial data to bit, leads to more transmission of bit of MTU, the maximum transmission unit. In the experiment, we compared arithmetically default data composed of 16 byte and spatial data converted to bitmap and for simulation, we created virtual data and compared its network transmission speed and conversion time. Virtual data created as standard normal distribution and skewed distribution to compare difference of reading time. The experiment showed that converted bitmap and network transmission are 2.5 and 8 times faster for each.

• 한국실내디자인학회논문집
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• 제16권5호
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• pp.63-70
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• 2007

A relationship between the museum display wall composition and the visual spatial configuration is investigated in this study. From the previous research, existing types are classified in order to define the exhibition space of room to room. Based on the classification, an open room to room of art museum is defined as a room to room of museum, and the plane of museums is investigated. With the museums under this study, the wall of a room to room exhibition space as well as the visual spatial configuration are analyzed depending on the location of an opening, centering on the composition of unit space. In addition, two types of spatial composition are compared depending on the location of the opening. One type of spatial composition is lied on a straight line with visual continuity, and the visual line is found to be simple. Whereas, the other type has an invisible configuration between spaces due to a criss-crossed opening, so the space is perceived to be closed and disconnected. When comparing these two types, the advantage and disadvantage of each space are compared. As a result, a similar type and size of unit space are derived. In addition, the ratio of the opening compared to the total wall was found to be uniform, and a distribution of the opening and walls were found.

• 한국주거학회논문집
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• 제13권3호
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• pp.45-53
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• 2002

The purpose of this study is to examine the characteristics of unit plans in the high-rise mixed-use condominium and to provide the data fur architectural planning and design. The tools of statistical analysis are frequency, percentage, mean, cross-tab, and correlation. The results of this study are as fellows; The most frequently found shape of unit is a deformed polygon. The common rooms in housing units are dressing room, powder room, offset-kitchen, family room, passage, hallway, and foyer. The specially prepared spaces are wash room, home bar, independent porch, and garden. As to room size and area ratio in a dwelling unit, those of living room are biggest and highest irrespective of unit size. As the floor area of unit increases, does the size of each room and space but the area ratio of each room decreases. This research is made to develop an Apartment Information System. This integrated information system is to be designed to provide residents of high-rise mixed-use condominiums with convenient, economical, and safe life.

• 농촌계획
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• 제28권1호
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• pp.17-26
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• 2022

It is necessary to prepare a stable production base in advance for a change in the global grain market, and it is required to prepare comprehensive countermeasures such as securing technical skills and cultivation technology. Therefore, Korea, which relies on imports of major grains other than rice, could be exposed to a food crisis at any time unless the self-sufficiency rate of grains is improved. In order to respond to this new food crisis, it is necessary to find ways to efficiently utilize rice fields to increase the domestic grain self-sufficiency rate. From this point of view, interest and demand for the generalization of farmland that can be used as paddy fields and returned to paddy fields are increasing, and related research is also being continuously performed. In order to select a multipurpose farmland project site, this study extracted farmland containing 10% or more purchased and stockpiled farmland through spatial analysis (buffer, dissolve, intersect, etc.), and finally presented areas subject to multipurpose farmland projects. The target site for the multipurpose farmland project was finally selected by integrating data onto a point-by-point basis so that the current status of farmland purchased and stockpiled, Farm Manager Registration Records, and the Korean Soil Information System data (drainage classes, surface soil texture, field-suitability classification, etc.) can be used in combination. There are 175 areas where the multipurpose farmland is possible. Incheon 2, Gyeongbuk 40, Gangwon 2, Chungbuk 7, Chungnam 48, Jeonbuk 34, Jeonnam 19, Gyeongbuk 15, Gyeongnam 8. Chungcheongnam-do has the most target site for the multipurpose farmland project, and Gangwon-do is the least. It is expected to contribute to new commercialization and business expansion by deriving business areas by identifying the scale of the farmland multipurpose farmland project using Farm Manger Registration Records and spatial data.