• 대한지구과학교육학회지
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• 제8권1호
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• pp.76-86
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• 2015

The purpose of this study is to take advantage of the smart teaching - learning programs about the unit of 'Earth and Moon' and find out how to apply the effect appears. Teaching-Learning program was conducted over eight lessons. And we analyzed the effect of the program at any time through the evaluation and interview. The results are as follows. First, this study proposed a method to assist in the teaching and learning of spatial ability for students' movement of the Earth and the Moon. The program takes advantage of N-Screen Applications were configured to allow both Earth observation insider perspective and the external multilateral perspective. This improves students' understanding qualitatively. Second, we applied the teaching and learning programs utilizing smart smart devices, and the result was a lot of low rank students' average score rises. In addition, we were able to see that many students' understanding and interest, self-confidence are improved.

• 한국공간구조학회논문집
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• 제20권4호
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• pp.141-147
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• 2020

Single-layered grid space steel roof structure is an architectural system in which the structural ability of the nodal connection system greatly influences the stability of the entire structure. Many bolt connection systems have been suggested to enhance for better construct ability, but the structural behavior and maximum resistance of the connection system according to the size of bolt clearance play were difficult to identify. In particular, the identification of bending stiffness of the connection system is very important due to the characteristics of shell structures in which membrane stresses based on bending force effect significantly. To identify effective structural behavior and maximum bearing force, four representative nodal connection systems were selected and nonlinear numerical analysis were performed. The numerical analysis considering the size of the bolt clearance were performed to investigate structural behavior and maximum values of the bending force. In addition, the type of effective nodal connection system were evaluated. As a result, the connection system, which has two shear plane, represented high bending stiffness.

• 대한물리의학회지
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• 제7권3호
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• pp.259-265
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• 2012

Purpose : Patients with Parkionson's disease have a temporal and spatial restriction for their's exercise treatment. The aim of this study is to verify the effectiveness of e-exercise program on balance, gait, and endurance ability in people with Parkinson's disease. Methods : Eighteen participants, with Parkinson's disease that ranged from stage to on the Hoehn & Yahr scale, were assigned to two group. Two group were divided into on-line group that exercised in home by computer video, and off-line group that exercised in clinical center. Exercise program that included 3 sections (warm-up, main exercise, cool down)-5 parts(stretch, strength, balance, gait, stretch) was used to train for participants. We used the functional reach test for balance ability, timed up and go test for gait ability, 6 minute walking test for endurance ability. Wilkoxon sign lank tests were used to assess the difference of balance, gait, and endurance ability in pre-and post test each groups. Mann-whitney tests were used to assess the difference of balance, gait, and endurance ability between groups. Results : Wilkoxon sign lank tests revealed that both group were improved the balance, gait and endurance agility by e-exercise program intervention. Mann-whitney tests showed that there were no differences between groups in the variation of balance, gait, endurance ability. Conclusion : We believe that exercise program with on-line(e-exercise program) is an effective intervention for people with Parkinson's disease and is no different than off-line exercise group in the variation of balance, gait, endurance ability.

• 대한원격탐사학회:학술대회논문집
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• 대한원격탐사학회 2002년도 Proceedings of International Symposium on Remote Sensing
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• pp.388-393
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• 2002

Remote sensing data is collected and analyzed to enhance understanding of the terrestrial surface. Since Landsat satellite was launched in 1972, many researches using multispectral data has been achieved. Recently, with the availability of airborne and satellite hyperspectral data, the study on hyperspectral data are being increased. It is known that as the number of spectral bands of high-spectral resolution data increases, the ability to detect more detailed cases should also increase, and the classification accuracy should increase as well. In this paper, we classified the hyperspectral and multispectral data and tested the classification accuracy. The MASTER(MODIS/ASTER Airborne Simulator, 50channels, 0.4~13$\mu$m) and Landsat TM(7channels) imagery including Yeong-Gwang area were used and we adjusted the classification items in several cases and tested their classification accuracy through statistical comparison. As a result of this study, it is shown that hyperspectral data offer more information than multispectral data.

• 한국수학교육학회지시리즈A:수학교육
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• 제52권2호
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• pp.191-201
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• 2013

The theory of embodied cognition assumes that behaviors, senses and cognitions are closely connected, and there is a growing interest in investigating the significance of embodied cognition in the field of mathematics education. This study aims to applicate the embodied turtle metaphor and expressions when students visualize three-dimensional objects. We used MRT(Verdenberg & Kuse, 1978) & SVT for this research and both tests turned out that turtle schemes are useful to the students in a low level group. In addition, students found turtle schemes more useful in SVT which requires constructing three-dimensional objects, than in MRT which requires just rotating the image of three-dimensional objects in their mind. These results suggest that providing students who are less capable of spatial visualizing with the embodied schemes like turtle metaphor and expressions can be an alternative to improve their spatial visualization ability.

• 한국해양공학회:학술대회논문집
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• 한국해양공학회 2004년도 학술대회지
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• pp.35-39
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• 2004

In a shipyard, there exist various critical decision making components pertaining to various production hindrances. The most prominent one is best-fit spatial arrangement for the minimal spatial occupancy with better pick-ability for the erection of the ship in the dock. During the present research, a concept have been conceived to evade the gap between the identification oj inter-relationships among a set of blocks to be included on a pre-erection area, and a detailed graphical layout of their positions, is called an Optimal Block Relationship Diagram A research has been performed on generation of optimal (or near Optimal) that is, with minimal scrap area. An effort has been made in the generation of optimal (or near-optimal) Optimal Block Relationship Diagram with the Goldberg's Genetic Algorithms with a representation and a set of operators are 'trained' specifically for this application. The expected result to date predicts very good solutions to test problems involving innumerable different blocks to place. The suggested algorithm could accept input from an erection sequence generator program which assists the user in defining the nature and strength of the relationships among blocks, and could produce input suitable for use in a detailed layout stage.

• International Journal of Computer Science & Network Security
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• 제23권6호
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• pp.49-58
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• 2023

Renewable energy is not a new terminology. One of the fastest growing renewable energies is solar energy. The implementation of solar energy provides several advantages including the reduction of some of the environmental risks of fossil fuel consumption. This research elaborated the importance of the adaption of solar energy by developing a spatial decision support system (SDSS), while the Residential Solar Energy Adoption (RSEA) is an instantiation artifact in the form of an SDSS. As a GIS web-based application, RSEA allows stakeholders (e.g., utility companies, policymakers, service providers homeowners, and researchers) to navigate through locations on a map interactively. The maps highlight locations with high and low solar energy adoption potential that enables decision-makers (e.g., policymakers, solar firms, utility companies, and nonprofit organizations) to make decisions. A combined qualitative and quantitative methodological approach was used to evaluate the application's usability and user experience, and results affirmed the ability of the factors of utility, usefulness, and a positive user experience of the residential solar energy adoption of spatial decision support system (RSEA-SDSS). RSEA-SDSS in improving the decision-making process for potential various stakeholders, in utility, solar installations, policy making, and non-profit renewable energy domains.

• 한국항공운항학회지
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• 제31권2호
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• pp.18-24
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• 2023

According to the results of a survey by Boeing, LOC-I (Loss of Control in Flight) was the highest in the number of deaths by fatality accident category in the past 10 years from 2012 to 2021, and the number of deaths worldwide due to LOC-I accidents was 757. It turned out to be the biggest cause of aircraft fatalities, with a figure close to twice the sum of UNK (Unknown or Undetermined), which is the 2nd place, and CFIT (Controlled Flight Into or Toward Terrain), which is the 3rd place. This study set six scenarios related to spatial disorientation that may occur during sensory-dependent flight targeting student pilots and instructor pilots at domestic designated specialized educational institutions using flight simulation training equipment, and in each scenario, the pilot's. The need for SDRT (Spatial Disorientation Recovery Training) is verified by analyzing the flight experience and recovery ability by qualification, and SDRT is repeatedly performed to verify and present the training cycle and time.

• 대한조선학회논문집
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• 제55권1호
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• pp.9-21
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• 2018

Survivability of naval vessels is defined as the ability to perform functions and missions in a combat environment. Survivability has close relationship with the spatial layout of naval vessels. In order to maximize survivability, it must be considered from the early stage of design. However the existing concept of survivability was intended to be applied to unit vessels. So it was not suitable for assessment of spatial layout results at the early stage of design. In this paper, a simplified assessment method which can evaluate the spatial layout considering the survivability in the early stage of design has been proposed. For this, assessment layers were defined on survivability components such as susceptibility, vulnerability, and recoverability. Assessment layers of each component were overlapped to deduce a survivability layer of spatial layout alternatives. In addition, the proposed method and optimization algorithm were used to derive optimal spatial layout alternatives considering survivability.

• 영재교육연구
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• 제23권5호
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• pp.697-713
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• 2013

본 연구는 2011년도 광역시 소재 대학교 부설 과학영재교육원의 수학 및 과학영역별 중학교 1, 2학년 89명을 대상으로 영재의 특성을 조사하는 데 목적을 두었다. 이를 위해 다중지능, 자기조절학습능력, 개인성향 조사지를 실시하였으며, 교과영역별 특징을 분석하였다. 먼저 과학영재와 수학영재 모두 자기이해지능이 강점지능으로 나타났으며 논리수학지능이 약점지능으로 나타났다. 과학영역별로 물리영재와 지구과학영재는 공간지능이 강점지능으로 나타난 반면 화학영재와 생물영재는 자기이해지능이 강점지능으로 나타났다. 자기조절학습능력의 경우, 수학영재와 과학영재는 선행연구결과의 일반학생의 자기조절학습능력보다 높게 나타났으며 교과영역에 상관없이 인지전략과 동기전략이 높은 경향을 보였다. 과학영재와 수학영재의 개인성향은 교과영역에 상관없이 개별 특성이 다양하여 광범하게 분포하는 것으로 나타났다. 특히 특정지능에서 강점을 보인 학생들 사이에서도 자기조절학습능력 및 개인성향에서 서로 다른 특성을 보였다. 결론적으로 수학영재는 자기이해지능이, 과학영재에서 물리와 지구과학은 공간지능이, 생물과 화학은 자기이해지능이 강점지능으로 나타나는 특징이외에는 교과영역에 따른 차이보다는 개인별 다중지능, 자기조절학습능력 및 개인성향에서 뚜렷한 차이가 있는 것으로 고찰되었다.