• The Journal of the Korea Contents Association
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• v.15 no.4
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• pp.530-544
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• 2015

We live in the modern society which is called as Knowledge-Information society. The national and social goal is to raise the creative person for preparing the rapidly changing society. Thus, the schools and families concentrate on and effort to enhance the creativity and problem solving ability. Specially, the school is pushing forward the STEAM education and Software education for raising the creativity person and enhancement of national competitiveness. In this study, we suggested for STEAM education the way how we utilize the App Inventor which was supported by MIT and came up as a computer programming language for Software education, and we verified and evaluated through professional group verification. We completed STEAM instructional design according to the results from the professional group verification, and we suggested the authentic instruction for STEAM education. In addition, we suggested the further prospects of Software education and instructions through going through the characteristics and application plan of App Inventer in terms of educational computer programming language.

• Journal of Broadcast Engineering
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• v.12 no.5
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• pp.452-459
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• 2007

The Internet is encountering a new turning point owing to the raising Web 2.0. A user Just receives the information and service provided by a service provider in the existing web 2.0, but a user can create a new service for himself using an application program and data provided in web 2.0. The digital content market is producing a new service according to Web 2.0. The specific service among them is User Created Contents(UCC) and it is leading to the participation and interesting of user SecondLife also which is the type as Social Network Service(SNS) and VR, is placing as a new service type. This paper defines Web 2.0 environment and classifies as UCC, SNS and Virtual Reality(VR) and defines a variety services shown in new environment. It also analyzes shortcomings and then prospect a new type of service which will be shown in the future.

• Journal of the Institute of Electronics Engineers of Korea SC
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• v.48 no.2
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• pp.22-27
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• 2011

Rain sensor detecting the presence of rain outside windshield glass of automobile by receiving scattered light from rain drops is proposed. Rain sensor using windshield glass as light waveguide required precision optical apparatus to inject light signal into windshield glass, and it was susceptible to outside shock and vibration, resulting malfunction, which altered optical coupling ratio. Proposed rain sensor, which detected scattered light from rain drops outside optical waveguide, did not require optical components because it did not need to inject light signal into light waveguide. This was advantageous because the sensor was less effected by shock and vibration. Fabricated rain sensor using scattered light outside waveguide responded not only to rain drops but also mist particles under simulated rain conditions using spraying nozzle, thus it showed prospects as rain sensor for automobile application.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.12 no.10
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• pp.4689-4695
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• 2011

Nanodiamond is a relatively new nanomaterial with broad prospects for application. In this paper, a variety of methods were used to analyze comprehensively chemicophysics properties of the detonation monocrystalline and synthetic polycrystalline nanodiamond, XRD spectroscopy, EDS, HRTEM, FTIR, Raman spectroscopy, TGA-DTA and BET. The results show that the monocryctalline detonation nanodiamond particles are spherical or elliptical shape of 4nm ~ 6nm grain size and the polycryctalline synthetic nanodiamond particles are angular shape of 80nm ~ 120nm grain size. The surface of the monocrystalline and polycrystalline nanodiamond contain hydroxy, carbonyl, carboxyl, ether-based resin, and other functional groups. The phase transition temperature of the monocrystalline detonation nanodiamond in the $N_2$ is about $650^{\circ}C$.

• Journal of Environmental Science International
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• v.29 no.7
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• pp.773-784
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• 2020

In order to protect the lives and property of citizens, the central and local governments are responding by enacting municipal ordinances and regulations as the frequency of extreme weather conditions due to climate change increases and intensity increases gradually. Accordingly, the basic contents and strategies of domestic and foreign policies to cope with cold and heat waves were reviewed, referring to measures suitable for application to the Daegu metropolitan area. In addition, it is intended to provide a policy alternative to Daegu metropolitan area to minimize damage from extreme weather by identifying the current status, characteristics, and future prospects of extreme weather in Daegu metropolitan area. Since the damage caused by the cold wave in Daegu area is not as great as that of other regions, it is urgent to come up with cold wave measures for the health and transportation sectors, and to come up with measures against the heat wave as the damage caused by the heat wave is the most serious in the country. Also we will identify spatial characteristics so that the districts and counties with high vulnerability to extreme weather can be identified and implemented first, and present civic life-oriented facilities and civic action guidelines to overcome cold and heat waves.

• Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
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• v.22 no.2
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• pp.161-170
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• 2004

This study is to standardize framework data model in facility area. This study focuses on standization of application oriented data model in facility management and other facility applications. In order to outline the framework data model in facility area, building and cultural sub-themes which have been proposed in a previously conducted research have initially been considered. Also various international and domestic standards in framework data for facility area have been analyzed to identify appropriate feature classes and types. In order to avoid future conflicts, many facilities experts from various facility areas including facility database and facility manarement have provided their inputs in this study based on their viewpoints and prospects. As a results of this study, we are developed to features and data model or framework data in facility area.

• Korean Security Journal
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• no.17
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• pp.173-193
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• 2008

This paper discusses how the strategies for crime prevention are interrelated to sustainable urban development. The sustainable urban development for healthy and safe cities implies regulations or legal, lawful control to reduce fear of crime and prevent substantial threats to health and safety of individual persons as well as of the community. City planners attempt to apply to the strategies for crime prevention their perception of what the sustainable urban development should be with respect to urban environment. Many planners have studied on the possibility of reduction in fear of crime and actual crimes through environmental improvement. The results of their preliminary studies provide specific suggestions to reduce crimes and fear of crime by application of CPTED. This study proposes alternatives in policy necessary for CPTED, which is one of the strategies for crime prevention, to take its place as a useful strategy for making the urban societies safe and sustainable.

• Archives of design research
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• v.11 no.1
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• pp.73-80
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• 1998

Recently, the importance of cultural design has been increasing due to the globalization. However the cultural design is mainly focusing on the shape or color stereotype of different cultures, ignoring another important aspects of cultural design: the way of peoples' interacting with product. The study aims to develop usability test program for cultural user-interface design that operates in the world wide web. The study begins with discussing the nature of culture through defining culture and reviewing the depth and variables of culture. Based on the findings the structure of the usability testing program on the WWW design methods is identified. The usability testing program on the WWW comprises of five different modules: module for identifying users' demographic characteristics, module for cultural variables, module for population stereotype, module for usability testing, and module for data storage and analysis. Finally findings are summarized and further research prospects are outlined.

• 한국지구물리탐사학회:학술대회논문집
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• 2007.12a
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• pp.1-14
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• 2007

This paper briefly reviews the history of the Korean geophysics and analyze the current status of geophysical researches. And the future prospects of geophysics are discussed based on social demands for the science and technology in Korea. About thirty universities offer geophysics courses in their academic curricula. Although the number of Ph.D. graduates in geophysics had been small until the year of 1990, but is rapidly increasing. In recent years about $7{\sim}8$ Ph.D's are produced every year. The major geophysical methods used in Ph.D. theses are seismic, electrical and electromagnetic methods, and earthquake waves and research themes are computational geophysics, which involve data processing, modelling, inversion and tomography, geological structures, and paleomagnetic studies in the order of numbers. The Solid Earth Geophysics is generally distinguished in two categories such as "Global Geophysics" and "Exploration Geophysics". However, they are intimately connected, and overlap in many sectors, especially in large scale research projects. The global geophysics has a more academic and general scientific meaning, and several research groups in Korean universities are carrying out the earthquake seismology and paleomagnetic studies. On the other hand the exploration geophysics focuses on practical application of geophysical concepts, and the public research institutes conduct large projects for exploration of energy and mineral resources and to cope with environmental and natural disaster problems. The geophysical studies for local geology and regional crustal structure utilize various survey methods and usually cover both academic and exploration purposes. The computational geophysics constitutes the indispensable theoretical backgrounds for all geophysical sectors. Many young Korean geophysicists, who have strong background in mathematics and physics, devote to the computational geophysics and several groups have made the internationally highest level achievements. But, Korean geophysicists have to expand their research interests to include more global-scale, high-tech researches and collaborative works with various other science groups.

• Current Optics and Photonics
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• v.4 no.3
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• pp.161-173
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• 2020

Colloidal quantum dots (QDs) have gained tremendous attention as a key material for highly advanced display technologies. The performance of QD light-emitting diodes (QLEDs) has improved significantly over the past two decades, owing to notable progress in both material development and device engineering. The brightness of QLEDs has improved by more than three orders of magnitude from that of early-stage devices, and has attained a value in the range of traditional inorganic LEDs. The emergence of high-luminance (HL) QLEDs has induced fresh demands to incorporate the unique features of QDs into a wide range of display applications, beyond indoor and mobile displays. Therefore it is necessary to assess the present status and prospects of HL-QLEDs, to expand the application domain of QD-based light sources. As part of this study, we review recent advances in HL-QLEDs. In particular, based on reports of brightness exceeding 10⁵ cd/㎡, we have summarized the major approaches toward achieving high brightness in QLEDs, in terms of material development and device engineering. Furthermore, we briefly introduce the recent progress achieved toward QD laser diodes, being the next step in the development of HL-QLEDs. This review provides general guidelines for achieving HL-QLEDs, and reveals the high potential of QDs as a universal material solution that can enable realization of a wide range of display applications.