• Journal of The Korean Association of Information Education
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• v.18 no.2
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• pp.285-294
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• 2014

Recently, research using robots as a learning tool has increasingly been conducted in K-12 education area. It has been known that hands-on robots give positive educational effect not only on science and mathematics, but on STEAM activity, and help improve the abilities necessary in the 21 century, such as critical thinking, creativity, communication skills, and team work. Despite many research achievements, there is still few research on robot based curriculum to improve the instrumental application of robots in the primary and secondary education fields. In other words, there is a lack of studies of systematic educational contents, educational methods and educational evaluation to increase the instrumental application according to schools and class years. Therefore, this study analyzed domestic and foreign robot based curriculums and relevant cases to develop 'robot' related educational programs in primary school and middle school, suggested the achievement objectives in the robot area as a sub category of the computer science curriculum which will be revised, and proposed teaching-learning method and evaluation method.

• Knowledge Management Research
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• v.19 no.3
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• pp.173-187
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• 2018

This study was aimed at suggesting an integrative framework for creating collective intelligence and enhancing group performance after reviewing previous studies including those related to learning organizations, organizational learning, knowledge management, and collective intelligence. In the first, we examined that the similarities and differences between collective intelligence and other similar concepts, such as learning organizations, organizational learning, and knowledge management. Next, an integrative framework for creating collective intelligence and channeling it into strong group performance were suggested. In this process, we reviewed conditions for creating collective intelligence and segmented the major variables as expectancy, valence, and instrumentality, according to Vroom's (1964) expectancy theory. Characteristics of problems and the roles of leaders were respectively considered as valence for inducing collaboration and expectancy for managing probability to achieve goals. Instrumental factors were also adopted from conditions for creating group intelligence suggested from several researchers, such as creativity, openness, willingness for working together, horizontal communication, centralization in decision making, and building effective information and communication technology system and active usage of it. We discussed two potentially disputable matters about the scope and level of collective intelligence and group performance and suggest several theoretical and practical implications in the Discussion.

• Journal of the Korean Home Economics Association
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• v.27 no.3
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• pp.117-132
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• 1989

The purpose of present study was to investigate the overall tendency of family life satisfaction in the period of expanding family and to identify the variables affecting family life satisfaction. Also, to provide some basic directions for the expanding period and to improve its family life satisfaction. The major findings of the study can be summarized as folllows; 1. In the family life areas of relations with spouses, self-evaluating scored highest, reflecting the greatest degree of family life satisfaction of both husbands and wives. 2. There is significant differences between husbands and wives in family life satisfaction scores. Generally, husbands were more satisfied with their family wives. 3. In satisfaction with areas specific to the family life, husbands were highly satisfied with instrumental areas which were related to role performences, as the head of family. And wives higly satisfied with areas refer to relations with spouses and communication with their family members. 4. Family life satisfaction scores were relatively high when the educational level and income of the couple were high. So the variables which related to socio-economics status affected seriousiy on family life satis-faction of that period. 5. Family life satisfaction degree of the expanding family was getting lower by degree. But it showed that the higher both spouses were satisfied with finance situation and communication, the higher the genaral familly life satisfaction degree of both spouses would be.

• The Journal of the Korea institute of electronic communication sciences
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• v.7 no.6
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• pp.1471-1477
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• 2012

Social Network has common functions such as acting as primary platforms smoothing the sharing and distribution by combination with various contents. Hence, questionnaire has been conducted to users of all of Twitter, Facebook and KakaoStory, and the factors affected by each service are presented by statistical analyses of the survey and the results are resolved by dividing them into complete and instrumental social capital. This study will be able to provide a standard for users to select Social Network according to their purposes and contribute to development of new Social Network or improvement of existing ones.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.24 no.3
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• pp.35-40
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• 2024

In this paper, the design, implementation, and analysis of a device capable of transmitting and receiving millimeter-wave signals and performing channel sounding measurements in atmospheric conditions at distances of up to approximately 10km outdoors are presented. The device is expected to be instrumental in studying the propagation characteristics of millimeter-wave frequencies. Utilizing data such as received power levels and power delay profiles (PDPs), comparisons with predicted values using path loss, K-factor, and other propagation models are facilitated. The mobile transceiver unit, integrated onto a vehicle platform, allows for flexible adjustment of transmitter and receiver positions, while synchronization issues with distance are mitigated using a rubidium atomic clock. Furthermore, automatic boresight alignment using scanning techniques is employed to locate the main sector of the antenna.

• Information Systems Review
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• v.23 no.4
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• pp.103-125
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• 2021

Mobility services are rapidly developing along with information and communication technology (ICT) innovation. Recently, the on-demand mobility platform market is growing, and an environment is provided in which users can call services more conveniently and check the connection status in real time using smartphones. This study investigates the current status of users' perceptions and experiences of car-hailing mobility services such as KAKAO Taxi and UT Taxi, and it analyzes the factors affecting the intention to continuously use the car-hailing service, focusing on environmental and instrumental benefits and trust in driver and platform. In particular, this study examines whether the significance of the relationship between influencing factors and continuous use intention could vary depending on the degree of innovativeness and ICT utilization. The results of this study showed that perceived benefits (environmental benefits and convenience and economic instrumental benefits) and trust in driver had significant effects on increasing trust in platform. It was analyzed that the higher the trust in platform, the higher the intention to continuously use the car-hailing service. Furthermore, the influence of perceived environmental benefits and economic benefits on the trust in platform was different depending on the degree of individual innovativeness, and the influence of convenience and economic benefits on the trust in platform varied depending on the degree of ICT utilization. Referring to the results of this study, mobility service providers can better understand the current status of users' perceptions and trust for car-hailing services, and implement service promotion strategies suitable for individual characteristics.

• Journal of the Korean Home Economics Association
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• v.36 no.9
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• pp.93-106
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• 1998

The purpose of this study were to find the general trends of middle-aged couples' caregiving burden, to investigate correlation between husbands and wives, to estimate the differences according to related variables and analyze the effects of significant variables influencing on caregiving burden. The data were obtained from 172 middle-aged couples living in Seoul and Kwangju. The major findings were as follows; 1. Scores of couples' caregiving burden were lower than medium. Especially, husbands' score were higher than wives' in a sense of guilt and haubands' caregiving burden correlated significantly with the wives'. 2. Couples' caregiving burden showed significant differences according to birth order of husband and family life satisfaction was the most differencial in family relationship variables. Social support and family value orientations were also significant variables. 3. The most influencial variable on husbands' caregiving burden was emotional support, and instrumental support on wives'. And life and communication satisfaction were very important variables. So family relationship must be enhanced and social support system's reinforcements are necessary.

• The Transactions of the Korea Information Processing Society
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• v.7 no.7
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• pp.2254-2263
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• 2000

This paper proposes an efficient predictive image-compression technique based on vector quantization of blocks of pels. In the proposed method edge contents of blocks control the selection of predictors and block shapes as well. The maximum number of bits assigned to quantizers has been in creased to 3bits/pel from 1/5bits/pel, the setting employed by forerunners in predictive vector quantization of images. This increase prevents the saturation in SNR observed in their results in high bit rates. The variable block shape is instrumental in eh reconstruction of edges. The adaptive procedure is controlled by means of he standard deviation ofp rediction errors generated by a default predictor; the standard deviation address a decision table which can be set up beforehand. eh proposed method is characterized by overall improvements in image quality over A-VQ-PE and A-DCT VQ, both of which are known for their efficient use of vector quantizers.

• Proceedings of the KIEE Conference
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• 2006.04a
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• pp.342-344
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• 2006

During last years, large investments have been directed to development and research of nano-technological products like semiconductor, display panel, optic-fiber communication components, life technology, and ultra-precision components. All quantitative measurements at nanometre scale should guarantees accurate results and high quality. Laser interferometer is one of most famous nanometre scale devices to be able to measure metre-scale distance with nanometre scale resolution, but it is easily affected by various error causes like geometrical, instrumental and environmental factor. On the other side, capacitive sensor is robust to above error factors, but it is able to measure relatively shorter distance, under $100{\mu}m$, than laser interferometer. New error correction method for laser interferometry using capacitive sensor will be introduced in this paper.

• Journal of Families and Better Life
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• v.15 no.4
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• pp.269-286
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• 1997

The purpose of this study is to explore the degree of family strengths in Korea and the relationships of various characteristics to it. Family strengths the dependent variable is composed of four factors such as family commitment family communication family values and family crisis coping strategies. Independent variables are the following :i) family socio-demographic variables ii) individual variables iii) social variables. The main findings were as follows; 1. The degree of family strengths in Korea is generally high. Among four factors of family strengths the degree of family commitment is relatively higher and that of family values is relatively lower than the others. 2. The variables which independently affected the family strengths have influence in the following order ; individual marital satisfaction family's S.E.S(middle) self esteem, instrumental support from society and husband's income(middle level). These results show that the variable related to the family streng hs are multi-dimensional. Accordingly for the purpose of fortifying family in strengths educational programs should be prepared according to multi-dimensional characteristics.