• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2017.05a
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• pp.279-282
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• 2017

Kinect depth sensor, a depth camera developed by Microsoft as a natural user interface for game appeared as a very useful tool in computer vision field. In this paper, due to kinect's depth sensor and its high frame rate, we developed a distance measurement system using Kinect camera to test it for unmanned vehicles which need vision systems to perceive the surrounding environment like human do in order to detect objects in their path. Therefore, kinect depth sensor is used to detect objects in its field of view and enhance the distance measurement system from objects to the vision sensor. Detected object is identified in accuracy way to determine if it is a real object or a pixel nose to reduce the processing time by ignoring pixels which are not a part of a real object. Using depth segmentation techniques along with Open CV library for image processing, we can identify present objects within Kinect camera's field of view and measure the distance from them to the sensor. Tests show promising results that this system can be used as well for autonomous vehicles equipped with low-cost range sensor, Kinect camera, for further processing depending on the application type when they reach a certain distance far from detected objects.

• Proceedings of the KSCN Conference
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• 2003.11a
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• pp.1061-1062
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• 2003

현대사회에서 청소년기에 발생하는 영양문제 중 가장 빈번히 나타나는 청소년기 비만은 성인 비만으로 이행되기 쉬우며, 당뇨병, 지방간, 고혈압과 같은 각종 성인병의 발생과도 관련이 있다. 또한 체형에 대한 관심이 증가하고 있는 현대사회에서 편견의 대상이 됨으로 인한 심리적 장애를 발생시키기도 한다. 이에 따라 비만인의 체중조절을 위한 다양한 교육프로그램들이 실시되고 있는데, 현재까지의 실시되고 있는 프로그램들은 강의식교육이 주류를 이루고 있어 적극적인 교육효과를 이끌어 내는데 많은 한계점을 가지고 있었다. 이에 본 연구자들은 지역보건소를 중심으로 2박 3일간의 청소년 캠프 프로그램을 통하여 VTR감상, CAN-Pro를 이용한 섭취 식단의 평가 및 영양상담, 영양뷔페, 역할극, 다양한 영양지식 응용게임, 일상생활에서 활용가능 한 운동교육, 비만의 원인과 건강과의 관련성 및 식사요법 등에 대한 강의를 실시하였다. 캠프 참가자들은 부천시에 거주하는 중학생으로 사전에 신장과 체중에 대한 조사를 바탕으로 비만으로 판정된 총 42명(남 28명, 여 14명)으로 하였다. 캠프 시작전과 후에 설문조사를 통하여 영양지식, 영양태도, 자아만족도에 관한 조사를 실시하여 프로그램 직후의 효과를 판정하였고, 일상적인 영양소섭취상태를 평가하기 위해 24시간 회상법을 통하여 캠프참가 전날의 식이섭취 조사를 실시하였다. 대상자의 평균 연령은 13.9세로 남녀학생 간에 유의적인 차이가 없었으며, 신장은 남학생이 160.7cm, 여학생이 156.8cm였다. 체중, 체질량지수, 비만지수, 허리엉덩이둘레비 및 체지방 함량은 남학생이 각각 75.5kg, 29.1kg/$m^2$, 30.1, 0.89, 33.3%이었고, 여학생이 각각 67.8kg, 27.5kg/$m^2$, 25.3, 0.81, 34.6%였다. 영양소 섭취량에 대한 분석결과 열량의 경우 남학생이 2137.7㎉, 여학생이 2059.7㎉ 섭취수준을 보였으며, 총열량에 대한 당질, 단백질, 지질의 섭취 비율은 남학생 57:14:29, 여학생 60:13:26으로 남여학생 모두 총열량에 대한 지질의 섭취 비율이 높았다. 프로그램의 효과 평가를 위하여 남녀중학생을 모두 합하여 비교하였을 때 프로그램 실시 후 영양태도가 유의적으로 향상되었으며(p<0.001), 자아만족도 및 영양지식에 있어서는 유의적인 변화가 나타나지 않았다. 그러나, 성별로 분류하여 비교 시 남학생은 영양태도(p<0.01)와 영양지식(p<0.05)이 유의적으로 향상되었고, 여학생의 경우에는 영양태도(p <0.01)에서만 유의적인 향상을 나타내었다. 이상의 결과에서 2박 3일간의 청소년 캠프는 남녀 비만중학생에 있어 영양태도의 향상을 가지고 왔으며, 남학생의 경우에는 영양지식에도 유의적인 향상이 나타났다. 그러나 영양교육의 효과가 실제적인 영양소섭취 및 비만도의 변화에 영향을 미치는지를 알아보기 위해서는 지속적인 추적 관리를 통한 효과판정이 필요한 것으로 보여진다.

• Journal of the Korea Society of Computer and Information
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• v.18 no.5
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• pp.1-8
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• 2013

Smartphone enables diverse applications to be used in mobile environments. In spite of the high performance of smartphones, battery life has become one of the major constraints in mobility. Therefore, power efficiency of the smartphone is one of the most important factors in determining the efficiency of the smartphone. In this paper, in order to analyze the power efficiency of the smartphone, we have various experiments according to several configuration parameters such as processor, display and OS. We also use diverse applications. As a result, power consumption is dependent on the processor complexity and display size. However, power consumption shows the unpredictable pattern according to the OS. Smartphone using android OS consumes high power when internet and image processing applications are executed, but It consumes low power when music and camera applications are executed. In contrary, smartphone based on iOS consumes high power when game and internet applications are executed but it consumes low power when camera and processing applications are executed. In general, smartphone using iOS is more power efficient than smartphone based on android OS, because smartphone using iOS is optimized in the perspective of the hardware and OS.

• Journal of Digital Convergence
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• v.15 no.7
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• pp.111-121
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• 2017

Smartphone use has become a part of everyday life, not only for adolescents but also for elderly and older people. Thus, this study explored the effect of demographic variables, the amount of smartphone usage, type of smartphone use and psychosocial variables on smartphone dependence of the elder group. We analyzed the data of 5627 (50s and 60s) of the Internet overdependence survey data of the Korea Information Society Agency in 2016. As a result of hierarchical multiple regression analysis, More frequency of smartphone use of weekday and weekend, and usage time of smartphone of weekday were related to greater smartphone dependence. More smartphone use for information seeking and games were associated with greater smartphone dependence. And, as loneliness and anxiety increased, smartphone dependence increased, while smartphone dependence decreased, as social capital increased. Through this study, it is necessary to understand characteristics related to smartphone dependence of elder and older group, and to use this knowledge to solve their smartphone dependence. Future studies also need to identify the causal relationship between predictors of smartphone dependence in elderly and older people.

• Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
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• v.25 no.1
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• pp.19-30
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• 2007

Modeling 3D buildings is an essential process to revive the real world into a computer. There are two ways to create a 3D building model. The first method is to use the building layer of 1:1000 digital maps based on high density point data gained from airborne laser surveying. The second method is to use LiDAR point data with digital images achieved with LiDAR. In this research we tested one sheet area of 1:1000 digital map with both methods to process a 3D building model. We have developed a process, analyzed quantitatively and evaluated the efficiency, accuracy, and reality. The resulted differed depending on the buildings shape. The first method was effective on simple buildings, and the second method was effective on complicated buildings. Also, we evaluated the accuracy of the produced model. Comparing the 3D building based on LiDAR data and digital image with digital maps, the horizontal accuracy was within ${\pm}50cm$. From the above we derived a conclusion that 3D building modeling is more effective when it is based on LiDAR data and digital maps. Using produced 3D building modeling data, we will be utilized as digital contents in various fields like 3D GIS, U-City, telematics, navigation, virtual reality and games etc.

• Journal of the Korean BIBLIA Society for library and Information Science
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• v.31 no.2
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• pp.203-221
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• 2020

This study closely analyzed changes in the educational environment and changes in the needs of children's and young people's reading culture programs, which are directly beneficiaries of the promotion of reading culture as they enter the fourth industrial revolution. It also comprehensively evaluated the reading culture promotion project for children and adolescents promoted by the National Children and Youth Library and proposed a reading culture promotion project that meets the needs of the smart era. This study investigated the cases of various domestic and foreign reading culture promotion projects to divulge trends. The authors invited experts from public libraries and school libraries with experience of the reading culture promotion projects and performed Focus Group Interviews (FGI). The authors evaluated individual reading culture program based on the PDCA method (Plan, Do, Check, Act). Based on the data obtained through case studies and expert evaluations, the development plan of reading culture promotion project and the strategy of promoting new projects to be pursued in the National Children and Youth Library were presented. By gathering the results of the research, 'Interactive e-book making platform production / distribution business', 'Game-type reading program production / distribution business', 'Habruta reading culture dissemination project using backward learning method', 'Youth coding branding "Teen-Start -Up"' were proposed as new services.

• The Korean Journal of Elementary Counseling
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• v.4 no.1
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• pp.263-284
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• 2005

The purpose of this study was to examine the effect of game-centered empathy training on the prosocial behaviors of elementary schoolers in a bid to suggest how their prosocial behaviors could be boosted. The research questions were posed as below: 1. Does game-based empathy training improve the overall empathy of school children? 2. Does game-based empathy training have a better effect on the cognitive empathy of school children or their emotional empathy? 3. Does game-based empathy training enhance the prosocial behaviors of school children? The subjects in this study were 62 children in their fourth year of D elementary school in Eumseong-gun, north Chungcheong province. They were divided into an experimental group and a control group, and a survey was conducted before and after the experimental group under-went empathy training for about six weeks. The instrument used in this study was David(1980)'s Interpersonal Reactivity Index adopted by Park Sung-hee(1996) to suit school children. Another instrument was Park Sung-hee (1997)'s inventory to assess the prosocial behaviors of children. The collected data were analyzed by SPSS 10.0 for Windows program, and reliability analysis and t-test were employed. The findings of the study were as follows: First, as for the effects of the game-based empathy training on the overall empathy of the elementary school youngsters that included both emotional and cognitive empathy, both groups got lower scores in posttest than in pretest. The experiment produced unexpected results, as the experimental group got significantly lower scores. This fact indicated that the game-based empathy training was ineffective. Second, the game-centered empathy training didn't exercise any influences on their cognitive and emotional empathy. The experiment had a reverse impact on the cognitive and emotional empathy of the experimental group, which implied that the training served as a factor to deteriorate the two types of empathy, and the hypothesis posed in this study was rejected. Therefore, which type of empathy could make a better progress by being exposed to the training couldn't definitely be determined. Third, the game-based empathy training didn't serve to Improve the prosocial behaviors of the elementary schoolers. There was no change in the experimental group, and this fact signified that there's something wrong with the attempt to develop school children's empathy to step up their prosocial behaviors. Based on the above-mentioned findings, the following conclusion was reached: First, the game-centered empathy training had no effects on boosting the overall empathy of the school children. Second, the game-centered empathy training couldn't be said to be effective in improving either cognitive empathy or emotional one. From a viewpoint of relativity, that could be said to affect emotional empathy more than cognitive one. Third, the game-based empathy training wasn't effective in improving prosocial behaviors. Rather, that resulted in interrupting the promotion of prosocial behaviors.

• Science of Emotion and Sensibility
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• v.15 no.1
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• pp.121-132
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• 2012

Recently, interest in emotional technology has escalated and its application has extended to many fields, from both an industrial (product) and service (culture, tourism, medical, education, advertising) perspective. Moreover, culture has become a fundamental aspect of modern industry, playing key roles in: gaming, exhibitions, performances, sports, tourism, design, edutainment, as well as various content distribution industries. The prospect of applying emotional technology for cultural content industries makes up for more than half of the 'plan-manufacture-distribution-marketing' process, and thereby also serves as driving force for the growth of a nation. The primary objective of the following research is analyze successful cases from the past through utilization of emotional technology, and to speculate on efficient directions for future research into developing emotional contents. To achieve this, some of the key terms have been defined and elaborated for the sake of clarity. The terms are as follows: emotion, emotion engineering, science of emotion, emotional technology, and emotional contents. Furthermore, studies were conducted based on the six different fields surrounding CT R&D to observe how projects involving emotional technology have succeeded both on a national and global scale. Based on this analysis, this research aims to develop personalized 'Concierge' service-providing contents, contents designed to maximize performance ability of humans, and contents that could be controlled simply via emotion to effectively spread the culture of Korea by focussing on 'fusion' content development. The following research data may hopefully serve as a basic reference to industries navigating towards emotional content development.

• Journal of Internet Computing and Services
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• v.13 no.4
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• pp.63-71
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• 2012

This paper presents a design and implementation of U-Seum(Ubiquitous Museum) system based on the LBS(Location Based Service) and mobile augmented reality technique. The mobile services under the smart space of the ubiquitous environments have been expanded in the various fields. In this study, we introduce U-Seum which supports tourists in the museum. U-Seum is developed by use of the position tracking technique based on Wi-Fi and mobile augmented reality. The GPS which is widely used in the position tracking has a difficulty to be utilized in the inside of the building because it requires the Line-of-Sight between a sender and a receiver. Therefore, in this paper, we develop a realtime tour-supported service through experience and evaluate the performance of the system in the world famous UNESCO's Hwa-Seong Museum by measuring the distance from the Wi-Fi signal which is suitable to track the position interior of the museum. U-Seum provides various push services such as mobile augmented reality service for explanation of the artifacts of the museum, game services and the statistics information of the tourist when the tourist approach a specific AP. U-Seum is developed in the Haw-Seong Museum by the support of the Swon Haw-Seong Cultural Foundation. With a field test, we prove that the excellence and expandability of the system.

• Journal of Gifted/Talented Education
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• v.20 no.3
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• pp.1005-1026
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• 2010

Here we live in a fast changing world. The information and communication technologies have been surprisingly developing and making progress of our society. One of the benefit about the information and communication technologies is an internet. We can't imagine our life without it and it finally ends up with causing internet addiction which is called side effect of it. Most of former studies were, however, about game addiction and psychological factors of indivisual. In fact, there was not enough studies about internet addiction of computer science gifted students. If we analize the difference between computer science gifted students and average students when it comes to factors of internet addiction, we would surely be able to find out the result which is very helpful for cause analysis and its remedy. This paper examined the risk and protection factors of the former studies and choose various factors through Delphi analysis by specialists of information and science gifted students. Comparative analysis of computer science gifted students and average students was done through the test tools. And picking up unique factors of computer science gifted students, this paper shows the implication that contributes to protection of internet addiction and its remedy.