• 한국멀티미디어학회논문지
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• 제14권8호
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• pp.992-999
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• 2011

This paper proposed a human body posture recognition program based on haar-like feature and hand activity detection. Its distinguishing features are the combination of face detection and motion detection. Firstly, the program uses the haar-like feature face detection to receive the location of human face. The haar-like feature is provided with the advantages of speed. It means the less amount of calculation the haar-like feature can exclude a large number of interference, and it can discriminate human face more accurately, and achieve the face position. Then the program uses the frame subtraction to achieve the position of human body motion. This method is provided with good performance of the motion detection. Afterwards, the program recognises the human body motion by calculating the relationship of the face position with the position of human body motion contour. By the test, we know that the recognition rate of this algorithm is more than 92%. The results show that, this algorithm can achieve the result quickly, and guarantee the exactitude of the result.

• 로봇학회논문지
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• 제1권2호
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• pp.188-196
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• 2006

During the communication and interaction with a human using motions or gestures, a humanoid robot needs not only to look like a human but also to behave like a human to make sure the meanings of the motions or gestures. Among various human-like behaviors, arm motions of the humanoid robot are essential for the communication with people through motions. In this work, a mathematical representation for characterizing human arm motions is first proposed. The human arm motions are characterized by the elbow elevation angle which is determined using the position and orientation of human hands. That representation is mathematically obtained using an approximation tool, Response Surface Method (RSM). Then a method to generate human-like arm motions in real time using the proposed representation is presented. The proposed method was evaluated to generate human-like arm motions when the humanoid robot was asked to move its arms from a point to another point including the rotation of its hand. The example motion was performed using the KIST humanoid robot, MAHRU.

• 디지털융복합연구
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• 제15권7호
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• pp.415-424
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• 2017

본 연구는 공중의 체세포복제기술에 대한 위험특성, 위험심각성, 위험인식 및 위험수용의 관계를 살펴보기 위하여 서울에 거주하는 한국인 300명을 대상으로 IBM SPSS 21 프로그램과 IBM AMOS 21 프로그램을 활용하여 탐색적 요인분석과 확인적 요인분석, 상관관계 분석, 구조모형분석을 수행하였다. 주요결과를 요약 제시하면 다음과 같다. 첫째, 공중의 체세포복제기술에 대한 위험특성은 위험심각성에 통계적으로 유의한 정적 영향을 미치는 것으로 나타났다. 둘째, 공중의 체세포복제기술에 대한 위험특성은 위험인식에 통계적으로 유의한 정적 영향을 미치는 것으로 나타났다. 셋째, 공중의 체세포복제기술에 대한 위험심각성은 위험인식에 통계적으로 유의한 정적 영향을 미치는 것으로 나타났다. 넷째, 공중의 체세포복제기술에 대한 위험특성은 위험수용에 통계적으로 유의한 부적 영향을 미치는 것으로 나타났다. 다섯째, 공중의 체세포복제기술에 대한 위험심각성은 위험수용에 통계적으로 유의한 영향을 미치지 못하였다. 여섯째, 공중의 체세포복제기술에 대한 위험인식은 위험수용에 통계적으로 유의한 영향을 미치지 못하였다.

• Journal of Information Technology Applications and Management
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• 제21권1호
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• pp.69-83
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• 2014

This paper aims to reach the perceptions, ideas and intentions of the higher education adolescences on the effects of technological innovations over interrelation/communication between individuals. While advances in technology commonly works for the welfare and benefit of humankind, paradoxically in some instances could have negative outcomes on interrelations among individuals, minimizing face-to-face communication. The perceptions, so ideas of the individuals on the matter could differ depending on their age, gender, race and the culture beyond their relative intimacy and closeness to ICT tools. In order to penetrate the basic initiatives leading the perceptions of adolescents on the effects of technological improvements on human interrelations/ communication, a survey is conducted with 157 students in high education consisting of Asian, African, Cypriot, Turkish nationals. Results indicate that participants use technological tools for communication which lessens their face-to-face interaction. However they prefer social media more than face-to-face communication during conflict or undesirable situations.

• 한국전자파학회논문지
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• 제25권11호
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• pp.1095-1103
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• 2014

WBAN은 다양한 응용 가능성 때문에 최근 들어 많은 관심을 받고 있다. 본 논문에서는 기기의 위치에 따른 WBAN 통신 환경에 적합한 몇 가지 안테나와 모의 인체 제작에 대하여 소개하고자 한다. WBAN 시스템은 인체 내부 및 인체 표면에서 동작하므로 고유전율 및 고도전율을 갖는 인체 매질에 대한 영향을 고려해야 하며, 특히 안테나는 근역장 매질 특성에 따라 안테나의 방사 특성 및 반사 손실 특성이 변하게 되므로, 이를 고려한 안테나 설계가 요구된다. 또한, 안테나의 인체 영향을 고려하기 위해 모의 인체를 이용해 안테나를 설계하고 측정하였다. 서론에서는 WBAN 통신 채널의 분류를 소개하고, 각각의 통신 채널에 적합한 안테나의 특성에 대해 간단히 언급하였다. 제안된 몇 가지 안테나 사례 및 모의 인체 구현에 대하여 논의하였다. 결론에서는 안테나 설계 시 고려해야 할 사항과 향후 연구에 대해 언급하였다.

• 한국컴퓨터정보학회논문지
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• 제17권11호
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• pp.63-71
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• 2012

최근 이동통신 시스템 및 통신기술의 발달로 인해 사람 대 사람 통신에서 사람 대 사물, 사물 대 사물(M2M) 통신으로 변화하고 있다. 여기서 사물은 네트워킹 기능을 가진 장치들을 의미한다. 또한, M2M 서비스가 활성화 될 경우 무수히 많은 M2M 장치가 이동통신 네트워크에 접속할 것으로 예상되며 이로 인해 M2M 장치를 식별할 수 있는 식별자 부족 문제가 발생할 것으로 예측하고 있다. 따라서 본 논문에서는 이동통신 기반 M2M 서비스 환경에서 무수히 많은 M2M 장치를 식별할 수 있는 그룹 식별자 기반의 새로운 M2M 식별체계를 제안한다. 제안한 M2M 식별 방법은 향후 M2M 장치 식별자 부족 문제 해결할 수 있는 방법으로 활용될 수 있다.

• ETRI Journal
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• 제34권2호
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• pp.216-225
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• 2012

This paper presents a transceiver module for human body communications whereby a spread signal with a group of 64 Walsh codes is directly transferred through a human body at a chip rate of 32 Mcps. Frequency selective digital transmission moves the signal spectrum over 5 MHz without continuous frequency modulation and increases the immunity to induced interference by the processing gain. A simple receiver structure with no additional analog circuitry for the transmitter has been developed and has a sensitivity of 250 ${\mu}V_{pp}$. The high sensitivity of the receiver makes it possible to communicate between mobile devices using a human body as the transmission medium. It enables half-duplex communication of 2 Mbps within an operating range of up to 170 cm between the ultra-mobile PCs held between fingertips of each hand with a packet error rate of lower than $10^{-6}$. The transceiver module consumes 59 mA with a 3.3 V power supply.

• 한국인터넷방송통신학회논문지
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• 제9권5호
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• pp.133-138
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• 2009

본 논문에서는 WBAN (Wireless Body Area Network)환경하에서 운용되는 인체 무선 통신기술로서, ZCD (Zero Correlation Duration) 코드기반의 WBAN용 Ultra Wide Band(UWB)변복조기술을 제시하고, WBNA채널환경하에서의 모의실험 및 성능분석을 통하여, ZCD-UWB통신기술이 인체 무선통신용 기술로서도 유용하게 활용될수 있음을 확인하였다. 또한 UWB변복조 기술을 인체에 적용하여 RFIC화 할 경우에 고려할수 있는 사례를 소개하고 검토사항을 간략히 제시함으로써, 인체 무선통신용 UWB통신소자의 RFIC화의 가능성을 제시하였다.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제15권1호
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• pp.114-130
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• 2021

With the drastic growth of Information and Communication Technology (ICT) industry, global energy consumption is exponentially increased by mobile communications. The huge energy consumption and increased environmental awareness have triggered great interests on the research of dynamic distribution of cell user and traffic, and then designing the energy efficient cellular network. In this paper, we explore the temporal and spatial characteristics of human mobility and traffic distribution using real data set. The analysis results of cell traffic illustrate the tidal effect in temporal and spatial dimensions and obvious periodic characteristics which can be used to design Base Station (BS) dynamic with sleeping or shut-down strategy. At the same time, we designed a new Cell Zooming and BS cooperation mode. Through simulation experiments, we found that running in this mode can save about 35% of energy consumption and guarantee the required quality of service.

• 한국생활과학회지
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• 제14권6호
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• pp.925-936
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• 2005

The purpose of this study was to investigate the levels of the adolescents' self-concept, communication, and conflict with parents, and to examine relationship between adolescents' conflict and their communication. This study also investigated the effect of the conflict and the communication on their self-concept. 179 second graders of 3 middle schools and 182 6th graders of 2 elementary schools of East Jeonnam were selected as the subjects. The questionnaires for the communication and the conflict between the adolescents and the parents and the self-concept inventory were used. The data were analyzed by regression analysis, t-test, paired-t-test, one way ANOVA and Duncan analysis. First, mother was better than father in the communication with the adolescent. The conflicts with the parents were as shown below in order; the homework, school record, sibling relationship, playing computer games, etc.. The adolescents' self-concept was above the median. Second, the adolescents' conflicts and communications with parents were negatively correlated. Third, there was a difference in the adolescents' self-concept according to the conflict with the parents. Fourth, the adolescents' self-identity was influenced by the communication with the parents. Their self-acceptance was highly influenced by the conflict and the communication with the parents. Their self-behavior was influenced by the communication with the parents.