• Journal of the Korean Society for Industrial and Applied Mathematics
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• v.22 no.4
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• pp.241-251
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• 2018

The present study is carried out to examine the combined effect of heat absorption on flow model. The model consists of unsteady flow of a viscous, incompressible and electrically conducting fluid. The flow is along an impulsively started oscillating vertical plate with variable mass diffusion. The magnetic field is applied perpendicular to the plate. The fluid model under consideration has been solved by Laplace transform technique. The numerical data obtained is discussed with the help of graphs and table. The numerical values obtained for skin-friction have been tabulated. To shorten the lengthy equations in the solution some symbols have been assumed, which are mentioned in appendix. The appendix is included in the article as the last section of the manuscript.

• The Bulletin of The Korean Astronomical Society
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• v.35 no.1
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• pp.81.2-81.2
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• 2010

The origin of galactic angular momentum is commonly explained as a result of tidal torques of neighbouring protogalaxies on the forming galactic halo. In this context, the environment plays a preponderant role establishing the total angular momentum of present day galaxies. For the last four decades, most of the observational studies focused their attention on the spatial orientation of galaxies in filaments, groups or clusters, leaving behind the magnitude of the angular momentum. We have implemented a simple model to account for the spin of disk galaxies that allow us to obtain an estimate for any galaxy requiring a minimum of information. Applying this method to a sample of galaxies extracted from the Sloan Digital Sky Survey, we have been studying angular momentum distributions of galaxies in different environments. In this talk I will present some results for galaxies immersed in different environments, spanning three orders of magnitude in environmental density, galaxies having nearby companions and clustered galaxies.

• 제어로봇시스템학회:학술대회논문집
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• 2004.08a
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• pp.282-285
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• 2004

Every year, the last products from most important builders of high bandwidth digitizers are tested in our laboratory which is specialized in the design and the characterization of fast links used in large laser facility. The purpose of this article is to describe the series of tests conducted during the characterization of such digitizers. More particularly, it takes an interest in the metrology of instruments with more than 5 GHz of bandwidth. It presents the different methods used and the kind of conclusion that we can give after such study. Such metrology campaign which usually takes one month of work, allows us to observe the smallest details and characteristics that usually builders don't give in their tables specifications. After the campaign, a copy of our technical report is written and sends to the builder. This report can be used by the technical team to ameliorate the points we noted.

• Journal of the Korean Academy of Child and Adolescent Psychiatry
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• v.35 no.1
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• pp.98-100
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• 2024

The film The Whale goes beyond just depicting one aspect of the life of a morbidly obese man. As the audience watches Charlie, the main character who helplessly chose to live a morbidly obese life, we are compelled to reflect on what it means for ourselves to rise from the ground as we live in a gravitational field. Ultimately, this film is in line with director Darren Arnofsky's previous masterpiece, Black Swan. While the Oedipus complex runs through both films, this film goes one step further than Black Swan to face head-on the theme of "swollen foot," which is the original meaning of Oedipus. Through this move, we realize the essence of the Oedipus complex-something more fundamental than castration anxiety-something that we have been missing.

• SUVANNABHUMI
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• v.16 no.2
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• pp.91-113
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• 2024

Since the last years of the twentieth century, the approach to children's literature from ecocriticism has been discussed in academic fora around the world, especially in the US and Europe. In Southeast Asia, with the foundation of the ASEAN Association of Environment and Literature in 2016, there have been scholarly discussions about the capacity of children's literature to enhance ecological awareness in the region. In Vietnam, since the early years of the 21st century, with the increasing reception of ecocriticism from outside, children's literary works have become the subject of ecocriticism. This article examines scholarly works approaching children's literature in Vietnam, pointing out how they elucidate messages about environmental education. By studying Vietnamese ecocritical scholarship of various types including research, commentaries, and criticism on children's literature, this article argues that ecological education is a prominent feature in the relationship between ecocriticism and children's literature in Vietnam. As such, Vietnamese ecocriticism of children's literature shares the prominent argument of international materials on children's literature and ecocriticism, particularly in Southeast Asia.

• The Transactions of The Korean Institute of Electrical Engineers
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• v.64 no.7
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• pp.1074-1080
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• 2015

In the last decades, the increasing interest in unmanned aerial vehicle(UAV) for military, surveillance, and rescue applications made necessary the development of flight control theory and body structure more and more efficient and fast. In this paper, we describe the design and performance of a prototype hexarotor UAV platform featuring an inertial measurement unit(IMU) based autonomous-flying for use in bluetooth communication environments. The proposed system comprises the construction of the test hexarotor platform, the implementation of an IMU, dynamic modeling and simulation in the hexarotor helicopter. Furthermore, the hexarotor helicopter with implemented IMU is connected with a micro controller unit(ARM-cortex) board. The P-PD control algorithm was used to control the hexarotor. We used the Matlab software to help us to tune the P-PD control parameters for quick response and minimizing the fluctuation. The control simulation and experiment on the real system are implemented in the test platform, evaluated and compared against each other.

• ETRI Journal
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• v.34 no.4
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• pp.583-590
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• 2012

In this paper, we present a new approach for speaker diarization. First, we use the prosodic information calculated on the original speech to resynthesize the new speech data utilizing the spectrum modeling technique. The resynthesized data is modeled with sinusoids based on pitch, vibration amplitude, and phase bias. Then, we use the resynthesized speech data to extract cepstral features and integrate them with the cepstral features from original speech for speaker diarization. At last, we show how the two streams of cepstral features can be combined to improve the robustness of speaker diarization. Experiments carried out on the standardized datasets (the US National Institute of Standards and Technology Rich Transcription 04-S multiple distant microphone conditions) show a significant improvement in diarization error rate compared to the system based on only the feature stream from original speech.

• Journal of Korean Society of Industrial and Systems Engineering
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• v.11 no.17
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• pp.47-54
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• 1988

Korean National Railroad(K.N.R) playing a important role in land transportation gives us many problems to solve considering proper management of National Budget and development of the state of operation by maintaining train parts rationally as public services. According this study is to show inventory provision system for deciding the safety inventory level as the better rational method. Bibliography for this study is limited to only three kinds of seven brakes-shoe which is produced by T workshop in Korean National Railroad. To reduce the holding cost coming from the want of the stock and shortage cost of the stock expected. This study is to present a ratio of shortage on the stock permitted for the last definite period and the demand result forecast per month.

• Journal of Families and Better Life
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• v.22 no.1
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• pp.1-9
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• 2004

This study is about the ‘paradigm’ which works as a theoretical base for planning and managing elderly housing. For this purpose, this study surveyed published research works, and analysed the contents and the paradigms of the researches. This is based on the literature survey, and surveyed 66 research works published in the last 8 years. The result of the survey tells us that almost all of the research works done by Korean scholars are based on the rational approach to the design of elderly housing. They emphasize ‘functional rationalism’ ‘technical perfection’ ‘reasonable program’ ‘economy and market’, etc. However, such qualities as‘character of human being’ ‘depth of existence’ ‘identity of culture’ ‘speciality of place’are not emphasized. This means that paradigms used by Korean scholars are biased, and are far from the plural culture characterizing 21 st century. This study, therefore, analysed new paradigms appeared on the recent research works about housing environment, and suggests several new paradigms which would be essential for future planning of elderly housing.

• The Bulletin of The Korean Astronomical Society
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• v.39 no.2
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• pp.56.1-56.1
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• 2014

Although the growth of structure, as traced by galaxy clusters, has been extensively studied through cosmological simulations and large-scale surveys, the early formation and evolution of their galaxy content, and its relation to the transformation of the host environment, are still somewhat poorly understood. This is particularly true of the processes that give rise to the quiescent galaxy population between z=3 and z=2. Recent discoveries at z~2 are now bridging the gap between the well-established massive clusters of the last 9 Gyr and the high-redshift universe, and new datasets are now giving us access to statistical populations of intermediate-mass structures at this epoch. I will discuss the properties of quiescent galaxies in the most distant confirmed X-ray detected galaxy clusters, their implications for galaxy quenching at high-redshift as well as the regulation of star formation at group scales at z~2.