• The Journal of the Korea Contents Association
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• v.18 no.6
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• pp.283-293
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• 2018

The purpose of this study is to examine the effects of psychological distances on the consumer attitudes related to new product advertising based on the construal level theory. In particular, this study intends to test the interaction effects among models' nationalities, the newness of new products and message types on the Chinese consumer attitudes toward the advertisements or products. Perceived cultural distances were also considered to have moderating role on the interaction effects. The results indicated that the fits of psychological distances led more positive attitudes. Consumers showed more positive attitudes toward abstract(vs concrete) advertising with foreign models. In the domestic model advertising, consumer attitudes were enhanced when concrete(vs abstract) messages were provided. The findings also demonstrate that the influences could be different according to perceived cultural distances.

• Journal of the Institute of Electronics and Information Engineers
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• v.52 no.2
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• pp.70-74
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• 2015

In this paper, two-dimensional resonant transmitter and receiver for WPT is designed and implemented using method that use $90^{\circ}$ phase shifted input power to orthogonal transmitter. Mutual inductance is minimized by using proposed each orthogonal coil of receiver and the method that inputs $90^{\circ}$ phase shifted power is used to radiate magnetic energy into two dimension. This method facilitates two dimensional resonant WPT by solving power efficiency degradation problem according to location in general WPT. The resonance frequency is 6.78 MHz and the distance between transmitting and receiving resonator is 200 mm. The transfer efficiency of the proposed wireless power transfer system is higher than 40 % at all direction.

• Journal of the Korean Institute of Intelligent Systems
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• v.15 no.6
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• pp.682-687
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• 2005

Behavioral sequences of the medaka(Oryzias latipes) were investigated through an image system in response to medaka treated with the insecticide and medaka not treated with the insecticide, diazinon(0.1 mg/1). After much observation, behavioral patterns could be divided into 4 patterns: active smooth, active shaking, inactive smooth, and inactive shaking. These patterns were analyzed by 5 features: speed ratio, x and y axes projection, FFT to angle transition, fractal dimension, and center of mass. Each pattern was classified using decision tree. It provide a natural way to incorporate prior knowledge from human experts in fish behavior, The main focus of this study was to determine whether the decision tree could be useful in interpreting and classifying behavior patterns of the animal.

• The Science & Technology
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• v.30 no.2 s.333
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• pp.84-85
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• 1997

휴먼로봇프로젝트를 실현시키기 위해 KIST가 94년 4월 제어시스템연구실에 설립한 로보틱스연구팀. 산업용 로봇의 모터가 6개 정도라면 휴먼로봇은 60개의 모터가 들어가야 하는 작업으로 3차원 거리측정시스템, 방해물감지 초음파시스템 등 다양한 연구가 진행중이다. 국산 휴먼 로봇이 탄생되면 원자력발전소나 지뢰탐사 폭발물제거작업 등에 투입될 것이다.

• Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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• v.19 no.4
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• pp.1-8
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• 2005

Plasma researches using parallel-plate electrodes are widely used in semiconductor application such as etching and thin film deposition. Therefore, a quantitative understanding and control of plasma behavior are becoming increasingly necessary because their important applications and simulation techniques have been actively carried out in order to solve such problems above. In this paper, we developed a two-dimensional(2D) self-consistent fluid model, because 2D models can deal with real reactor geometries. The fluid model is based on particle continuity equations for taking account of an electrode system in a cylindrical geometry. An pure Ar gas was used at 500[mTorr] and radio-frequency (13.56(MHz)). Four models were simulated under the different electrode geometries which have chamber widths of 5.25, 6.0, 8.0, and 10.0[cm] and we compared their results with each other. Plasma uniformity and a do self-bias voltage were also discussed.

• Proceedings of the Korean Institute of Intelligent Systems Conference
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• 2002.12a
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• pp.329-332
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• 2002

본 논문에서는 효과적인 정보를 표현하는 ICA(Independent Component Analysis)-Factorial 표현 방법을 이용하여 얼굴감정인식을 수행한다. 얼굴감정인식은 두 단계인 특징추출과 인식단계에 의해 이루어진다. 먼저 특징추출방법은 PCA(Principal Component Analysis)을 이용하여 얼굴영상의 고차원 공간을 저차원 특징공간으로 변환한 후 ICA-factorial 표현방법을 통해 좀 더 효과적으로 특징벡터를 추출한다. 인식단계는 최소거리 분류방법인 유클리디안 거리를 이용하여 얼굴감정을 인식한다. 이 방법의 유용성을 설명하기 위해 6개의 기본감정(행복, 슬픔, 화남, 놀람, 공포, 혐오)에 대해 얼굴데이터베이스를 구축하고, 기존의 방법인 Eigenfaces, Fishefaces와 비교하여 좋은 인식성능을 보이고자 한다.

• Journal of the Institute of Electronics Engineers of Korea SP
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• v.40 no.6
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• pp.31-40
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• 2003

Most face recognition systems are based on 2D images and applied in many applications. However, it is difficult to recognize a face when the pose varies severely. Therefore, head pose estimation is an inevitable procedure to improve recognition rate when a face is not frontal. In this paper, we propose a novel head pose estimation algorithm for 3D face recognition. Given the 3D range image of an unknown face as an input, we automatically extract facial feature points based on the face curvature. We propose an Error Compensated Singular Value Decomposition (EC-SVD) method based on the extracted facial feature points. We obtain the initial rotation angle based on the SVD method, and perform a refinement procedure to compensate for remained errors. The proposed algorithm is performed by exploiting the extracted facial features in the normaized 3D face space. In addition, we propose a 3D nearest neighbor classifier in order to select face candidates for 3D face recognition. From simulation results, we proved the efficiency and validity of the proposed algorithm.

• The Journal of the Acoustical Society of Korea
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• v.38 no.3
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• pp.302-307
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• 2019

In modern Anti-Submarine Warfare, there are various ways to locate a submarine in a two-dimensional space. For more effective tracking and attack against a submarine the depth of the target is a critical factor. However, it has been difficult to find out the depth of a submarine until now. In this paper a possible solution to the depth estimation of submarines is proposed utilizing DIFAR (Directional Frequency Analysis and Recording) sonobuoy information such as contact bearings at or prior to CPA (Closest Point of Approach) and the target's Doppler signals. The relative depth of the target is determined by applying the Pythagorean theorem to the slant range and horizontal range between the target and the hydrophone of a DIFAR sonobuoy. The slant range is calculated using the Doppler shift and the target's velocity. the horizontal range can be obtained by applying a simple trigonometric function for two consecutive contact bearings and the travel distance of the target. The simulation results show that the algorithm is subject to an elevation angle, which is determined by the relative depth and horizontal distance between the sonobuoy and target, and that a precise measurement of the Doppler shift is crucial.

• Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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• v.23 no.6
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• pp.96-103
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• 2009

Wind power, Solar power and Fuel cell is the representative of new and renewal energy sources. In this paper, the frictional noise made by vehicles tire on roads is considered and researched as alternative electrical generation source. The amplitude and waveform of generated electricity with various types of vehicles according to their velocity, weight and distances between vehicles and sensor are measured and analyzed. As a result, all difference effects mentioned above which make the frictional noise affect quality and quantity of generated electricity. Maximum 0.53[V] and 0.028[W] electricity was generated by truck with 100[km/h] velocity on the express way.

• Journal of the HCI Society of Korea
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• v.6 no.1
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• pp.9-16
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• 2011

The previous researches of 3D object modeling have been performed in a limited environment where a target object only exists. However, in order to model an object in the real environment, we need to consider a dynamic environment, which has various objects and a frequently changing background. Therefore, this paper presents a segmentation and tracking method for a foreground which includes a target object in the dynamic environment. By using depth information than color information, the foreground region can be segmented and tracked more robustly. In addition, the foreground region can be tracked on the sequential images by referring depth distributions of the foreground region because both the position and the status in the consecutive images of the foreground region are almost unchanged. Experimental results show that our proposed method can robustly segment and track the foreground region in various conditions of the real environment. Moreover, as an application of the proposed method, it is presented a method for modeling an object extracting the object regions from the foreground region that is segmented and tracked.