• 과학교육연구지
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• 제38권3호
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• pp.703-717
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• 2014

물리에서 멘탈 시뮬레이션은 개념을 이해하거나 생성하기 위한 중요한 매커니즘이다. 만약 학생들이 멘탈 시뮬레이션에 어려움을 겪는다면 물리 개념의 이해 또한 어려워진다. 3차원 시뮬레이션 콘텐츠는 학생들에게 공간적 조작의 가이드를 제공함으로써 물리 개념 이해를 도울 수 있다. 이 연구에서는 빛의 직진 개념의 이해를 돕기 위한 3차원 시뮬레이션 콘텐츠를 개발하여 대학생 20명에게 적용하였다. 적용 결과, Hake gain이 0.93으로 수업에 대해 매우 높은 수준의 이해도를 보였다. 또한 학생들은 새로운 맥락에 대해서도 멘탈 시뮬레이션을 통해 현상을 잘 예측하였다. 이를 통해 3차원 시뮬레이션 콘텐츠를 통해 학생들의 개념 이해가 잘 이루어졌음을 알 수 있다.

• 한국측량학회지
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• 제34권2호
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• pp.153-159
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• 2016

Rivers refer to either natural or artificial structures whose primary functions are flood control and water conservation. Due to recent localized torrential downpours led by climate change, large amounts of eroded soil have been carried away, forming deposits downstream, which in turn degrades the capacity to fulfill these functions. To manage rivers more effectively, we need data on riverbed erosion and deposition. However, environmental factors make it challenging to take measurements in rivers, and data errors tend to prevent researchers from grasping the current state of erosions and deposits. In this context, the aim of the present study is to provide basic data required for river management. To this end, the author made annual measurements with a Real-time Kinematic-Global Positioning System (RTK-GPS) and a total station in Pats Cabin Canyon, Oregon, United States, and also prepared thematic maps of erosion and deposition thickness as well as water depth profiles based on a GIS spatial analysis. Furthermore, the author statistically analyzed the accuracy of three dimensional (3D) measurement points and only used the data that falls within two standard deviations (i.e. ±2σ). In addition, the author determined a threshold for a DEM of Difference (DoD) by installing measurement points in the rivers and taking measurements, and then estimated erosion and deposition thickness within a confidence interval of ±0.1m. Based on the results, the author established reliable data on river depth profiles and thematic maps of erosion and deposition thickness using pre-determined work flows. It is anticipated that the riverbed data can be utilized for effective river management.

• 한국지역지리학회지
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• 제12권2호
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• pp.189-201
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• 2006

이 글은 제2차 세계대전 이후 독일 지역지리학의 전개과정과 주요 쟁점들을 살펴보고자 한다. 전후 독일 지역지리학은 영미와 다른 위기와 재흥과정을 거치면서 전통의 지속과 새로운 변화를 겪어 왔다. 독일의 지역지리학은 1950, 60년대를 거치면서 전래의 방법론을 고수하면서 지리학 내외의 급속한 변화에 능동적으로 대처하지 못함으로써 1960년대 말 이래 심각한 위기에 빠졌다. 따라서 1970, 80년대에 지역지리학은 다양한 발전 방향과 방법론을 모색하면서 새로운 연구 개념을 제시하는데, 그것은 곧 지지의 실용적 필요성을 강조하면서 과학적으로 조직화된 정보를 수신자 위주로 제공하는 지리학 분야라는 것이었다. 하지만 1990년대 이래 통독과 함께 '지지연구소'가 설립되면서 지역지리학의 학문적 위상과 방향을 둘러싼 논의가 다시금 대두하고 있으며, 그 전도는 여전히 열려 있다고 할 수 있다.

• 대한공간정보학회지
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• 제17권3호
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• pp.89-95
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• 2009

2008년 9월 기반시설부담구역 지정과 관련한 조항이 국토계획법에 신설되면서 정부는 개정 시행령을 통해 개발행위허가 건수 증가율에 따른 기반시설부담구역 지정기준을 고시한 바 있다. 그러나 개발행위허가는 개발계획을 가진 개별 토지주의 신청에 의해 산재한 개별필지 단위로 발급되기 때문에 개발행위 급증지역을 국지적으로 선별하기란 기술적으로 매우 어려운 문제이다. 이에 본 연구는 특정 사례 지자체의 3개 연도 개발행위허가대장 자료를 한국토지정보체계(KLIS)의 필지정보와 결합하여 속성자료를 구축하고 이를 다시 지형 레이어 및 기반시설 레이어와 연동한 후 지자체 전체 평균 개발행위허가 증가율에 대한 법정기준을 상회하는 구역을 찾아냄으로써 기반시설 부담구역 지정을 위한 실무적 방법론을 제시하였다.

• 대한지리학회지
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• 제31권2호
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• pp.268-294
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• 1996

우리나라에서 사회.인구지리학은 다른 전공분야들에 비해 상대적으로 늦게 발달했 다고 할 수 있지만 최근 연구자들의 많은 관심을 끌면서 상당한 연구업적을 누적시키게 되 었으며, 앞으로 지리학의 학문적 발전을 선도할 뿐만 아니라 우리 사회가 당면한 사회공간 적 문제들의 해결에도 크게 기여할 것으로 전망된다. 이러한 점에서 본 연구는 우리나라에 서 1950년대 현대 지리학의 성립이후 사회.인구지리학 발달과정을 살펴보고 앞으로의 발전 전망과 과제를 모색해 보고자 한다. 이러한 연구목적에 따라 본 연구에서는 먼저 사회.인 구지리학의 일반적 개념 및 주요 주제들과 그 발달과정을 개관하고 다음으로 그동안의 연구 성과와 연구동향을 몇 가지 주요 주제, 즉 연구방법론, 도시화와 도시인구현상, 인구이동과 농촌사회생활의 변화, 거주지분화와 도시재개발, 도시사회생활과 지역사회복지 등으로 나누 어서 살펴 보고자 한다. 끝으로 사회.인구지리학의 발전전망과 과제를 간략히 논의하고 있 다.

• Journal of Communications and Networks
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• 제4권4호
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• pp.351-362
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• 2002

In this paper, we introduce a new approach to the minimum energy routing (MER) for next generation (NG) multihop wireless networks. We remove the widely used assumption of deterministic, distance-based channel model is removed, and analyze the potentials of MER within the context of the realistic channel model, accounting for shadowing and fading. Rather than adopting the conventional unrealistic assumption of perfect power control in a distributed multihop environment, we propose to exploit inherent spatial diversity of mobile terminals (MT) in NG multihop networks and to combat fading using transmit diversity. We propose the cooperation among MTs, whereby couples of MTs cooperate with each other in order to transmit the signal using two MTs as two transmit antennas. We provide the analytical framework for the performance analysis of this scheme in terms of the feasibility and achievable transmit power reduction. Our simulation result indicate that significant gains can be achieved in terms of the reduction of total transmit power and extension of network lifetime. These gains are in the range of 20-100% for the total transmit power, and 25-90% for the network lifetime, depending on the desired error probability. We show that our analytical results provide excellent match with our simulation results. The messaging load generated by our scheme is moderate, and can be further optimized. Our approach opens the way to a new family of channel-aware routing schemes for multihopNG wireless networks in fading channels. It is particularly suitable for delivering multicast/ geocast services in these networks.

• 대한가정학회지
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• 제44권8호
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• pp.181-198
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• 2006

The purpose of this study is to understand modernization process of korean housing during the past one century. To following up the changes of everyday lives of common peoples, magazines, news papers, tourist's records and gossip items were collected and interpreted from the microscopic point of view. In this study arguments on 'modernity' of korean housing was focused on some issues, thus, separation, differentiation, individualization, as well as privatization. Concrete discourses are; firstly, spatial isolation of housing and urban place each other, secondly, functional division of inner spaces of housing, and lastly, guarantee of privacy sphere. Historical changes of housing showed some meaningful phenomena. Before modernization housing was place of reproduction and consume at the same time. However after modern urban space came into existence and work and rest were separated, housing gained only mono function. Thus, housing have only one meaning as private place for nuclear family, that is "Home, Sweet Home." Instead of past multi-functional rooms, functional prescribed rooms, for example, dinning room, were newly born. In the past, the boundary between public and private sphere was not clear. For examples, everyday experiences of family were extended to the street and in the house in most cases spaces were shared. But after modernization the scale of individual spaces become larger and private life can be secured. Consequently, history of everyday life from traditional agricultural society to industrialized modern society demonstrates the structural context between the micro and macro dimension in the fields of human life. In other words, everyday lives and macro history response each other and create new perception of time-space structure in the modern housing.

• 한국지역지리학회지
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• 제8권3호
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• pp.396-411
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• 2002

본 논문은 경제 환경변화의 맥락에서 발생하는 조직 변화와 학습과정 및 이러한 조직적 프로세스에 내포된 공간성에 대한 고찰이다. 이러한 문제제기는 급격한 경계변화에 직면한 한국의 대기업 조직에서 나타나는 기업학습과 조직변화의 맥락적 특수성에 기초한 경험연구에 기초하여 논의한다. 삼성전자에 대한 사례연구를 통해, 본 논문에서는 다음의 세가지 이론적 논점을 밝힌다. 첫째, 학습의 지리적 원천들은 기업조직의 공간 활용에 영향을 미친다. 둘째,그러나 기업 학습 관행들은 단순히 국지적 근원이나 지리적 근접성에만 기초하기보다는 관계적 근접성을 토대로 제한된 장소의 범위를 초월하여 조직 내외에 존재하는 다양한 지리적 근원을 활용함으로써 조직의 지식과 역량을 강화시키는데 초점을 둔다. 마지막으로, 기업들은 암묵적 지식뿐만 아니라 명시적 지식을 통합함으로 학습과 혁신을 달성하고자 노력한다.

• 한국주거학회논문집
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• 제19권6호
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• pp.9-20
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• 2008

The residential environment is a place which reflects the gradual evolution of human consciousness because it is a cultural space the term, 'houses' is not relevant in this context as it literally means 'contains'. The long history of human living habits cannot be 'contained' within a space, but can be 'expressed' by a space and by the way the space is used. Furthermore, due to the way it is typically constructed, the basic characteristics of the house usually cannot be rapidly changed to accommodate new habits. However, recent changes that have taken place to the characteristics of the traditional master room suggest that traditional societal values associated with patriarchy have diminished. The current trend where priority is given to children's education also affects such a change. Existing researches related to the master room is confined to the behavioral use of the space and the composition of the physical space, while research on the master room its plane type has not been carried out. Therefore, in this study, apartment model houses are selected, and are classified according to the types of master room. An analysis is then carried out of the master room based on the occupants' requirements in terms of consciousness. Any planning modifications where required are then suggested. This research comprises the followings stages. First, an examination is carried out of existing research on the master room in order to understand its background and spatial components. A definitiones of related terms is also provided. Second, an analysis is carried out of the model houses exhibited at Suwan District, examining the typical standard that has been selected for the master room. Third, an analysis is conducted of the topics and questions to be selected for a questionnaire. Fourth, an analysis is carried out of the consciousness, satisfaction and requirements of the residents, as respondents in the questionnaire, related to the master room. and Research is then conducted of the architectural methods for planning the master room. Finally, future countermeasures for planning the master room are described based on the above analysis and research findings.

• 한국주거학회논문집
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• 제19권6호
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• pp.33-44
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• 2008

The street system in multi-family housing is an important design element to control the circulation of vehicles and pedestrians, and to form the spatial organization of the projects. In particular, in the case of high-rise apartments, the street patterns have an influence on the safety, amenity, and convenience of facilities. Until now, however, the design of street patterns in most high-rise multi-family housing projects has diminished the quality of residential environments because priority of design consideration has primarily been given to planning road ways and parking areas. Nevertheless, the design competitions introduced for the first time in the 1980s have played a significant role in developing fresh ideas and concepts in housing design. Because street patterns have been respectably modified as a result of the generalizing of design competitions, it is important to review the ideas that have been proposed in competitions over the recent past. In this context, this study classified the types of street patterns and analyzed their design characteristics for the proposals of housing design competitions since the 1990s. As a result of this analysis, the road patterns are classified into 4 types: 1) serial type, 2) isolated type, 3) mixed type, and 4) not a road pattern due to the system of connection. In addition, these were further divided into 8 types: 1) loop, 2) ring, 3) penetration, 4) tree, 5) direct entry, 6) ring and penetration, 7) loop and penetration, 8) not a road pattern due to appearance and the collector.