• Journal of the Korean Home Economics Association
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• v.43 no.2
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• pp.159-174
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• 2005

A comparison of students' media environments and media use patterns among Korean-Chinese in Yanji and Shenyang, Chinese students in Yanji and Korean students in Ulsan revealed significant differences. The research surveyed 3,241 students between 10-18 years old on their home media environments, media use patterns and social characteristics including achievement motivation and the locus of control. Korean children not only have more media in their homes, but they are also heavier users of computers and other media than the other two groups. Despite the lower rates of access to computers and other media at home, Korean-Chinese in Yanji reported more use of media including TV, VCRs and computers at the computer rooms than Chinese students in Yanji. Additional analyses revealed negative correlations between computer gaming at home and at computer rooms and achievement, internal locus of control and psychological and physical home environments. Impacts of Korea culture and societal changes on the Korean-Chinese use of media, and choice of media language were discussed.

• 제어로봇시스템학회:학술대회논문집
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• 2003.10a
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• pp.2676-2681
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• 2003

The Haptic Exploration Laboratory at The Johns Hopkins University is currently exploring many problems related to haptics (force and tactile information) in human-machine systems. We divide our work into two main areas: virtual environments and robot-assisted manipulation systems. Our interest in virtual environments focuses on reality-based modeling, in which measurements of the static and dynamic properties of actual objects are taken in order to produce realistic virtual environments. Thus, we must develop methods for acquiring data from real objects and populating pre-defined models. We also seek to create systems that can provide active manipulation assistance to the operator through haptic, visual, and audio cues. These systems may be teleoperated systems, which allow human users to operate in environments that would normally be inaccessible due to hazards, distance, or scale. Alternatively, cooperative manipulation systems allow a user and a robot to share a tool, allowing the user to guide or override the robot directly if necessary. Haptics in human-machine systems can have many applications, such as undersea and space operations, training for pilots and surgeons, and manufacturing. We focus much of our work on medical applications.

• Journal of Institute of Control, Robotics and Systems
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• v.15 no.6
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• pp.641-648
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• 2009

Currently several kinds of sensor localization methods have been developed for terrestrial wireless sensor networks. This study, in order to extend the field to underwater environments, a localization technique is studied for UWSNs (Underwater Wireless Sensor Networks). In underwater environments, RF (Radio Frequency) signal is not suitable for underwater usage because of extremely limited propagation. Because of that reason UWSNs should be constituted with acoustic modems. But, to realize underwater application, we can borrow many design principles from ongoing research for terrestrial environments. So, in this paper we introduce the modified localization algorithm using ToA method which is based on the terrestrial research. First of all, we study the localization techniques for terrestrial environments where we investigate possible methods to underwater environment. And then the appropriate algorithm is presented in the underwater usage. Finally the proposed underwater based localization algorithm is evaluated by using computer.

• International Journal of Internet, Broadcasting and Communication
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• v.12 no.3
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• pp.220-225
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• 2020

This paper investigates the non-intrusive speech intelligibility estimation method in noise environments when the bottleneck feature of autoencoder is used as an input to a neural network. The bottleneck feature-based method has the problem of severe performance degradation when the noise environment is changed. In order to overcome this problem, we propose a novel non-intrusive speech intelligibility estimation method that adds the noise environment information along with bottleneck feature to the input of long short-term memory (LSTM) neural network whose output is a short-time objective intelligence (STOI) score that is a standard tool for measuring intrusive speech intelligibility with reference speech signals. From the experiments in various noise environments, the proposed method showed improved performance when the noise environment is same. In particular, the performance was significant improved compared to that of the conventional methods in different environments. Therefore, we can conclude that the method proposed in this paper can be successfully used for estimating non-intrusive speech intelligibility in various noise environments.

• Steel and Composite Structures
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• v.29 no.3
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• pp.333-348
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• 2018

An analytical method is developed for analysing the contact buckling response of infinitely long, thin corrugated plates and flat plates restrained by a Winkler tensionless foundation and subjected to linearly varying in-plane loadings, where the corrugated plates are modelled as orthotropic plates and the flat plates are modelled as isotropic plates. The critical step in the presented method is the explicit expression for the lateral buckling mode function, which is derived through using the energy method. Simply supported and clamped edges conditions on the unloaded edges are considered in this study. The acquired lateral deflection function is applied to the governing buckling equations to eliminate the lateral variable. Considering the boundary conditions and continuity conditions at the border line between the contact and non-contact zones, the buckling coefficients and the corresponding buckling modes are found. The analytical solution to the buckling coefficients is also expressed through a fitted approximate formula in terms of foundation stiffness, which is verified through previous studies and finite element (FE) method.

• The Journal of The Korea Institute of Intelligent Transport Systems
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• v.13 no.6
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• pp.43-53
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• 2014

Supporting handover functionality in V2I communication environments is important to provide higher quality service to users on the road. Wireless Access in Vehicular Environments(WAVE) standards define some features that devices can communicate with each other more efficiently in vehicular environments but they do not include handover function for providing effective V2I services. In this paper, we introduce a handover scheme in WAVE system and show the performance result of proposed scheme.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.60 no.3
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• pp.349-354
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• 2015

The AMMI (additive main effects and multiplicative interaction) and GGE (genotype main effect and genotype by environment interaction) biplot which were accounted for a substantial part of total sum of square in the analysis of variance suggested to be more appropriate models for explaining G $\times$ E interaction. The grain yield of total ten sesame genotypes was significantly affected by environment which explained 61% of total variation, whereas genotype and genotype x environment interaction (G $\times$ E) were explained 16%, 24% respectively. From the results of experiment, three genotypes Miryang49, Koppoom and Ansan were unstable, whereas other three genotypes Kyeongbuk18, Miryang50 and Kanghuk which were shorter projections to AEA ordinate were relatively stable over the environments. Yangbak which was closeness to the mean yield and short projection of the genotype marker lines was regarded as genotype indicating good performance with stability. Ansan, Miryang48 and Yangbaek showed the best performance in the environments of Naju, Suwon, Iksan and Andong. Similarly, genotype Miyrang47 exhibited the best performance in the environments of Chuncheon and Miryang. Andong is the closest to the ideal environment, and therefore, is the most desirable among eight environments.

• Journal of the Korean Home Economics Association
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• v.39 no.9
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• pp.79-93
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• 2001

The purpose of this study is to develop the creative play environments for children. Physical environment is very important for play of child. Play activities of chad depends on materials and resources of physical environment around housing. To achieve the purpose of the study, following research questions are performed: 1) to investigating the play environments and its maintainence in Daejon 2) examining and analyzing the contents, safety, and functions of the playgrounds selected based on above findings 3) suggesting the creating play environments for child. Eighteen playground were selected and evaluated objectively by trainned personnel; the subjects(55children and 39adults) who used the playgrounds evaluated the playground subjectively. The results were as fellows: 1) Playgrounds selected in this study were conventional playgrounds, in which child can only do simple physical activities. The playground has installed fixed equipment in a row, in an effort to utilize whatever space available. However, such places are neither developmentally or economically sound. 2) The playgrounds evaluated in this study were very poor in matter of content, safety, and functions. The playgrounds lacks play materials, equipment, national features, storage, and do not follow national safety guidelines and standards. 3) The playground should offer much wider variety of natural material- textures including grass, dirt, stone, brick, plastic, metal, bark, leaves, sand, water, and a larger variety of plants, gardens, natural areas, and animals.

• Journal of the Korean Home Economics Association
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• v.36 no.11
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• pp.103-117
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• 1998

The purpose of this study was to investigate the relationships of home environments, personal factors on prosocial behaviors through analysis on children's sex and age. The data were collected by questionnaire method from 190 elementary school and 102 middle school children in Pusan. The instruments used are the child's prosocial behavior test on the basis of the self report scale by Yang, Jean Sook(1991). Frequency and regression analysis were applied for data analyses. The main results of the study were as follows; (1) Prosocial behaviors were directly influenced by home environments and personal factors on children's prosocial behaviors. Personal factors were stronger than home environments in influencing on children's prosocial behaviors. (2) Girl's prosocial behaviors were influenced by home economic level, parent's educational level, leaderships, the sphere of peer relations, popularity, prosocial behavior experience and maturity of prosocial motive. Boy's prosocial behaviors were influenced by leaderships, the sphere of peer relations, popularity, prosocial behavior experience and maturity of prosocial motive. (3) The effects of home environments and personal factors for prosocial behavior differed accoring to children's age. The more children aged, the less home environment & effective factors influenced.

• Archives of design research
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• v.11 no.2
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• pp.179-188
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• 1998

One of the characteristics in the modem society is the overflow of the communication. The invention of various merchandise and the development of information and comunication changed the society of verbal characterization into that of visible environments. To establish the effective communication in these changes, the package has to understand, specify, and deliver the needs of the consumers by the thorough analysis of the marketing plans and the marketing strategies. In this thesis we considered the conception of the marketing and the change of the marketing environments, studied the close relationship between the marketing and the package and, furthermore, introduced the package process as one of the effective communication methods. The purpose of this thesis is to introduce the marketing strategies. to develope the theoretical processes of the package design as a communication method which can cope with the change of the marketing environments caused by that of the consumer's favorites.