• The Transactions of The Korean Institute of Electrical Engineers
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• v.64 no.9
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• pp.1363-1368
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• 2015

Recently, computer form were smaller than before because of computing technique's development and many wearable device are formed. So, computer's cognition of human emotion has importantly considered, thus researches on analyzing the state of emotion are increasing. Human voice includes many information of human emotion. This paper proposes a discriminative feature vector selection for emotion classification based on speech. For this, we extract some feature vectors like Pitch, MFCC, LPC, LPCC from voice signals are divided into four emotion parts on happy, normal, sad, angry and compare a separability of the extracted feature vectors using Bhattacharyya distance. So more effective feature vectors are recommended for emotion classification.

• Proceedings of the Korean Information Science Society Conference
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• 2010.06d
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• pp.226-230
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• 2010

본 논문은 차세대 이동형 시스템인 웨어러블 컴퓨팅을 지원하는 무선 스마트 단말의 전송 채널 및 저장 용량 등의 제약에 따른 무선 단말 대 무선 단말의 데이터 전송한계를 극복하기 위한 새로운 전송방법 및 시스템을 제안한다. 무선 인터넷상에서 무선 단말의 전송 및 저장 능력의 한계는 무선 웨어러블 컴퓨팅 정보 서비스 발전을 가로막고 있다. 본 연구는 이러한 웨어러블 단말들 사이의 데이터 전송 및 저장 능력 문제점을 극복하기 위한 대안을 제시하기 위해서 실시간 백그라운드 전송 방법(Real-time Background Transfer Method)을 제안한다.

• Textile Coloration and Finishing
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• v.25 no.4
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• pp.287-291
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• 2013

Nowadays, terms such as 'Smart Textile', 'Intelligent Textile' and 'Wearable Computing' are commonly used in everyday contexts. And radio-frequency identification (RFID) is the use of a wireless non-contact system that uses radio-frequency electromagnetic fields to transfer data from a tag attached to an object, for the purposes of automatic identification and tracking. These products are required technologies which are textile treatments, printing, ink, etc. Durability of textile substrates is an essential marker for conductive ink printing process. Especially, heat stability is important, since conductive ink should be processable (annealing, curing) at temperatures below $150^{\circ}C$. This study was application of RFID on textiles. The textile pre-treatment processes should be carried out to use RFID antenna on textiles.

• Proceedings of the Korean Society of Computer Information Conference
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• 2014.01a
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• pp.405-406
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• 2014

최근에 고위험도 환자군을 중심으로 신체의 일부에 생체신호 측정 장치를 부착하여 병원이 아닌 환자가 거주하는 공간을 중심으로 데이터를 수집하고 이를 스마트 폰과 같은 모바일 기기로 전송하여 환자의 건강상태를 감시하는 모바일 헬스케어 패러다임이 활발하게 적용되고 있다. 이에 따라서 본 논문에서는, 웨어러블 생체신호 획득 장치로부터 모바일 기기로 수신되는 환자의 데이터에서 기저선 변동 또는 전원 잡음이 발생하는 경우 안드로이드 기반의 스마트 폰 환경에서 이러한 왜곡 현상을 실시간으로 제거하는 유한응답 필터링 연산 알고리즘을 제시하고자 하였다.

• Journal of Biomedical Engineering Research
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• v.29 no.3
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• pp.205-211
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• 2008

A method of detecting the specific patterns related to hand motions using the surface EMG(electromyogram) on an arm is proposed and tested. To do this, we obtain separately modeling parameters based on the LP, Prony estimator, and calculate the latency shift value between channels by cross-correlation function. Then, the coefficients and latency shift value are applied to the detection method to classify the EMG signals related to hand motions. Compared with the conventional methods, the present method are more useful to detect the motion intention of the user as an input device in the mobile and wearable computing environments. And, We expect that the results of this study are helpful in the development of rehabilitation devices for the handicapped.

• The KIPS Transactions:PartB
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• v.15B no.3
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• pp.237-244
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• 2008

In this paper, an infra-structure using the ontology based on the pulse information is proposed for the context-aware service of medical information system in ubiquitous computing environment. An diagnosis service inference system that represents the pulse data which was generated by the pulse-diagnosis with wearable signal, temperature, humidity, time, and other factors as ontology with artificial intelligence methods and describes the service scenario based on the ontology is designed and implemented.

• Proceedings of the Korean Information Science Society Conference
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• 2012.06c
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• pp.433-435
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• 2012

웨어러블 증강현실 환경은 동적으로 움직이는 HMD와 ARWand로 인한 시스템 오차와 사용자 오차가 발생하기 때문에, 3차원 공간 상에 다양한 위치에 존재하는 3D 객체를 효과적으로 선택하고 6 DOF 조작하는 것이 어렵다. 이러한 문제점을 해결하기 위해서, HMD, ARWand, 3D 객체간의 기하정보를 기반으로 3D 객체의 선택 확률을 모델링하고, 통합적으로 해석하여 최고의 선택 확률을 가지는 3D 객체를 선택할 수 있도록 한다. 그리고 근/원거리에 위치한 3D 객체를 효율적으로 조작하기 위해서 ARWand의 조작-디스플레이 맵핑 방법을 제안한다. 이는 3D 객체의 자연스러운 6 DOF 직접-간접 조작을 가능하게 한다.

• Annual Conference of KIPS
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• 2012.11a
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• pp.1221-1224
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• 2012

본 논문은 모바일 사용자의 이동환경의 정보를 감지하고 전송하기 위해 디지털의류를 사용하는 웨어러블 컴퓨팅 플랫폼을 제안한다. 이러한 대안을 제시하기 위해서 센서네트워크 기술과 디지털의류기술의 균형적 시각을 갖고 각 기술의 사용자특성을 면밀히 관찰하여 웨어러블 컴퓨팅 사용자가 요구하는 기능 및 인터페이스를 구현해야한다. 따라서 웨어러블컴퓨팅 플랫폼을 제안하고 디지털 센싱의류와 센서네트워크 인터페이싱(Interfacing), 기술이력축적, 생산성향상, 개발 편의성증진 및 개발자확대, 표준사용자요구사항분석, 기기효율성강화, 웨어러블컴퓨팅시스템 구축 등의 효과를 보여주는 현황 및 이슈를 기술한다.

• International journal of advanced smart convergence
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• v.7 no.4
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• pp.161-168
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• 2018

Recently, the bio-sensing information systems for collecting and analysing human body information of a patient in real time in the field of medical information and healthcare information service are continuously increasing. Specially, various wearable devices such as a wrist, a garment, and a skin attachment type for supporting health information of a mobile user are rapidly increasing. Until now, there is no patch-type biometric information service model. Therefore, this paper presents a biometric information system model and the application examples to support biometric information sensing and health information service of mobile user with digital patch system as a new biometric information system. As a result, through this research, research issues based on digital patch system are searched to suggest the direction of continuous research.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.24 no.1
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• pp.145-148
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• 2020

Wearable computing is growing rapidly as research on body area communication network using wireless sensor network technology is actively conducted. In particular, there is an increasing interest in smart clothing measuring unrestrained and insensitive bio signals, and research is being actively conducted. However, research on smart clothing is mainly based on 1: 1 wireless communication. In this paper, we propose a multi-access monitoring system that can measure bio-signals by multiple users wearing smart clothing. The proposed system consists of wireless access device, multiple access control server and monitoring system. It also provides a service that allows multiple users to monitor and measure bio signals at the same time.