• Journal of Communications and Networks
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• 제18권5호
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• pp.713-724
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• 2016

Energy consumption has become a main problem of sustainable development in communication networks and how to communicate with high energy efficiency is a significant topic that researchers and network operators commonly concern. In this paper, an energy-efficient multicast algorithm in multi-hop wireless networks is proposed aiming at new generation wireless communications. Traditional multi-hop wireless network design only considers either network efficiency or minimum energy consumption of networks, but rarely the maximum energy efficiency of networks. Different from previous methods, the paper targets maximizing energy efficiency of networks. In order to get optimal energy efficiency to build network multicast, our proposed method tries to maximize network throughput and minimize networks' energy consumption by exploiting network coding and sleeping scheme. Simulation results show that the proposed algorithm has better energy efficiency and performance improvements compared with existing methods.

• 복식
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• 제58권4호
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• pp.1-12
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• 2008

The expansion of media art has not only developed the digital technology but also given lots of environmental evolution to improve various fields of design as the main topic of the 21st century. The purpose of this study is aimed at proposing the new design that integrates fashion accessaries with media art technology. This will be done by understanding the social environment in digital ages and studying technology of design based on a variety of literature about changes in our society, neo value, vision, culture and art with fundamental notion of media art. First stage for this study, put an idea into just fashion accessary design because it is not sufficient to incoporate fashion and media art technology. The presented OLED(Organic Light Emitting Diodes) in this study is a kind of display to be in a limelight in the next generation and can be applied to various field of design. media art simultaneously moved into the scope of artistic debates. As a result, we can found that the use of audiovisual introduced numerous new aspects to the conceptual and aesthetic engagement with questions of conception. Today, the presented forms of art and inter-action from the closed -circuit work to interactive media art installations to open process-exist as parallel possibilities.

• 디자인학연구
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• 제14권4호
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• pp.35-45
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• 2001

The origin of Minivan styled RV dates all the way back to the year 1959 when Volkswagen introduced the Microbus in Germany. But the new category of "Minivan" was made, and first used by Chrysler. This was when Chrysler revealed a new vehicle in 1982 named "Minivan". Minivan was successful in gathering the public attention with it′s multi-purpose characteristic. Ever since, many models were introduced in this category by various auto-makers around the world, which made the Minivan segment very competitive. Various Minivans were also introduced by the Korean auto-makers and these models have been finding their place rapidly in the market owing to their unique characteristics. But the reason for the growth of the Minivan category in Korea was quite different from that of other nations. Through out this thesis, the possibilities of a Minivan that can full fill the needs of a new life style of a family in the basis of various documentary records will be discussed. Ways of making roads, where bigger sized Minivans are continuously increasing, more efficient will also be considered. The main topic of this thesis will be about Minivan styled RV(Recreational vehicle) in relation to the change of Korean life style.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제9권4호
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• pp.1424-1440
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• 2015

It is a challenging problem to search the intended images from a large number of candidates. Content based image retrieval (CBIR) is the most promising way to tackle this problem, where the most important topic is to measure the similarity of images so as to cover the variance of shape, color, pose, illumination etc. While previous works made significant progresses, their adaption ability to dataset is not fully explored. In this paper, we propose a similarity learning method on the basis of probabilistic generative model, i.e., probabilistic latent semantic analysis (PLSA). It first derives Fisher kernel, a function over the parameters and variables, based on PLSA. Then, the parameters are determined through simultaneously maximizing the log likelihood function of PLSA and the retrieval performance over the training dataset. The main advantages of this work are twofold: (1) deriving similarity measure based on PLSA which fully exploits the data distribution and Bayes inference; (2) learning model parameters by maximizing the fitting of model to data and the retrieval performance simultaneously. The proposed method (PLSA-FK) is empirically evaluated over three datasets, and the results exhibit promising performance.

• 한국콘텐츠학회:학술대회논문집
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• 한국콘텐츠학회 2009년도 춘계 종합학술대회 논문집
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• pp.115-119
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• 2009

21세기 디자인의 화두는 바로 디지털이다. 전문가들은 20~40대 디지털 세대가 새로운 미술문화의 중심으로 떠오르면서 대중적인 팝아트와 이것을 주제로 한 문화상품이 인기를 모으고 있다고 분석했다. 본 연구는 팝아트의 여러 이미지들 중 친근감을 불러일으키는 대중스타의 이미지를 활용해 다양한 색상의 구현과 착시에 의한 이미지 변환이 가능한 렌티큘러를 결합하여 기존의 시스템에서 벗어난 차별화된 주얼리 제품을 제안해보고자 한다. 국민 수준이 높아짐에 따라 디자인 요소는 점점 더 각광 받아질 것으로 보여 지며 그런 시점에서 본 연구가 주얼리 디자인 영역을 확대시킴으로서 현 주얼리 산업에 획기적인 디자인 요소로 작용되어지길 기대해 본다.

• Asian Journal of Innovation and Policy
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• 제6권3호
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• pp.245-261
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• 2017

As of the end of August 2017, there were 392 academic articles for $4^{th}$ Industrial Revolution in Korea. Is the vigorous discussion on the 4th Industrial Revolution in Korea normal? We checked the main theories on this topic by existing theories and responses of major countries and industries. The findings are that there are technologies called a Technological Revolution, and the industrial application of some technologies is in the starting stage. If comes, the Industrial Revolution is expected with the structure as follows: excellence science, core technologies, base technologies, application and infrastructure, and institutions. Nonetheless, the brisk studies are from three branches such as the Industry 4.0, social connection and artificial intelligence. The Industry 4.0, the digital transformation of manufacturing is the on-going issue in the industry, and artificial intelligence brings the biggest discourse. The 392 literature are mostly from introduction and preparation for future; technology 15.8%, industry 26.3%, society 24.5%, education 19.1%, policy 10.7%. The labor and employment is only 3.6%.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 2005년도 ICCAS
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• pp.1641-1644
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• 2005

Magnetic actuation utilizes the mechanic torque that is the result of interaction of the current in a coil with an external magnetic field. A main obstacle is, however, that torques can only be produced perpendicular to the magnetic field. In addition, there is uncertainty in the Earth magnetic field models due to the complicated dynamic nature of the field. Also, the magnetic hardware and the spacecraft can interact, causing both to behave in undesirable ways. This actuation principle has been a topic of research since earliest satellites were launched. Earlier magnetic control has been applied for nutation damping for gravity gradient stabilized satellites, and for velocity decrease for satellites without appendages. The three axes of a micro-satellite can be stabilized by using an electromagnetic actuator which is rigidly mounted on the structure of the satellite. The actuator consists of three mutually-orthogonal air-cored coils on the skin of the satellite. The coils are excited so that the orbital frame magnetic field and body frame magnetic field coincides i.e. to make the Euler angles to zero. This can be done using a Neural Network controller trained by PD controller data and driven by the difference between the orbital and body frame magnetic fields.

• 한국중재학회지:중재연구
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• 제22권2호
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• pp.31-52
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• 2012

Although political uncertainty exists between China and Taiwan, the two countries have been expanding their economic exchange since the 1980s. That economic exchange is not limited to trade, and its investment segment is constantly expanding. The investment was one-sided by Taiwan in the past, but since a change in policy by the Taiwan government in 2009, Chinese capital is able to flow into Taiwan for direct investment. These kinds of policy changes related to investment between the two countries require follow-up actions such as profit protection for investors, elimination of investment limitations, simplification of investment procedures, and establishment of an investment dispute resolution system. The main topic of this study is the resolution mechanism for investment disputes between China and Taiwan. At present, an individual investment dispute between two countries is settled according to each country's own regulations for dispute resolution. However, these two countries have not prepared dispute resolution regulations related to cases of investment disputes between Chinese or Taiwanese investors and the Chinese or Taiwanese government, or between the Chinese government and the Taiwanese government. Moreover, they do not have any agreements related to investment disputes. Therefore, in this paper, I enumerate the regulations related to investment dispute resolution between China and Taiwan, and then I point out the problems and suggest solutions for improvement. Also, through this study, I would like to contribute to establishing and implementing an investment dispute resolution mechanism between South Korea and North Korea.

• 한국가정과교육학회지
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• 제15권1호
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• pp.57-68
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• 2003

The purpose of this study was to research high school students’ practical awareness about the contents(classify them into four units. choice and dressing of clothes. textile and management of clothes. design and sewing of clothes. knitting and embroidery) clothing and textiles education in their real life. This is the investigation of which 576 high school students located in Choongchungnam$.$bukdo. Junrabukdo, Daeseon. In this statistical analysis. SPSS 10.0 for Windows Program was utilized to calculate percentage. mean and standard deviation. Also. these materials were verified by t-test. One-way Anova . Pearson’s correlation coefficient. The main results of obtained this study are as follows High school students’ practical awareness about the contents of clothing and textiles education in their real life appears to be low(only 9 items were over median point of 3.0). There was a significant difference in Practical awareness of contents of clothing and textiles education according to demographic variables. and correlation of variables differed significantly. These results should be provide fundamental information for improving students’ practical practice in their real life Since this study has touched only limited research on the topic of clothing and textiles education. it is essential that further research covering a wider array of themes be done in the future.

• Child Health Nursing Research
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• 제26권1호
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• pp.107-120
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• 2020

Purpose: This study was conducted to investigate the educational needs of parents of infants and toddlers with congenital heart disease (CHD) after hospital discharge. Methods: Qualitative content analysis was conducted of in-depth interviews of eight parents, and the results of an online survey of 171 parents were analyzed quantitatively. Results: Only 16.4% of parents reported that they had received education after hospital discharge on how to provide care for a child with CHD at home. The main reason why parents did not receive education on this topic was that they did not have sufficient opportunities or information (75.5%). In addition, 97.1% of parents stated that they needed educational programs that would be available at home after discharge. In terms of specific educational content, parents expressed the highest needs for education on the symptoms of CHD and ways to cope with them, the prognosis of CHD, and the growth and development of infants and toddlers with CHD. Conclusion: The study showed that parents' educational needs were high in many ways. However, the information and educational opportunities offered after discharge were insufficient compared to those needs. Further research is needed to develop post-hospital educational programs that meet their needs.