• Journal of the Korean Society for information Management
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• v.31 no.2
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• pp.41-56
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• 2014

The necessity of the raw data management and reuse is issued by diffusion of the recognition that research data is a national asset. In this paper, a metadata design model by schema class inheritance and a metadata integrated search model by schema objects are suggested for a structural management of the data. A data architecture in which an schema object has an 1 : 1 relation to the data collection was designed. A suggested model was testified by creation of a virtual schema class and objects which inherit the schema class. It showed the possibility of implement systematically. A suggested model can be used to manage the data which are produced by government agencies because schema inheritance and integrated search model present way to overcome the weak points of the 'Top-dow Hierarchy model' which is being used to design the metadata schema.

• The Journal of Korea Robotics Society
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• v.8 no.2
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• pp.129-135
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• 2013

In this paper, a high precision outdoor positioning system is newly proposed using multiple GPS receivers based on the Extended Kalman Filter (EKF). Typically, the GPS signal has the instantaneous errors that degrade the positioning seriously. Using the multiple GPS receivers instead of an expensive DGPS receiver, the positioning reliability and accuracy are improved in this research as a low cost solution. To incorporate the small displacement, an INS data have been tightly coupled to the GPS data, which has the inherit disadvantage of the cumulative error occurring over time. To achieve a stabilized and accurate positioning system, the multiple GPS receiver data are fused with the INS data through the EKF process. Through real navigation experiments of an outdoor mobile robot, the performance of the proposed system has been verified to be accurate comparable to DGPS system with a lower cost.

• Mycobiology
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• v.39 no.4
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• pp.235-242
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• 2011

In contrast to the nuclear genome, the mitochondrial genome does not follow Mendelian laws of inheritance. The nuclear genome of meiotic progeny comes from the recombination of both parental genomes, whereas the meiotic progeny could inherit mitochondria from one, the other, or both parents. In fact, one fascinating phenomenon is that mitochondrial DNA in the majority of eukaryotes is inherited from only one particular parent. Typically, such unidirectional and uniparental inheritance of mitochondrial DNA can be explained by the size of the gametes involved in mating, with the larger gamete contributing towards mitochondrial DNA inheritance. However, in the human fungal pathogen Cryptococcus neoformans, bisexual mating involves the fusion of two isogamous cells of mating type (MAT) a and MAT${\alpha}$, yet the mitochondrial DNA is inherited predominantly from the MATa parent. Although the exact mechanism underlying such uniparental mitochondrial inheritance in this fungus is still unclear, various hypotheses have been proposed. Elucidating the mechanism of mitochondrial inheritance in this clinically important and genetically amenable eukaryotic microbe will yield insights into general mechanisms that are likely conserved in higher eukaryotes. In this review, we highlight studies on Cryptococcus mitochondrial inheritance and point out some important questions that need to be addressed in the future.

• ETRI Journal
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• v.40 no.1
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• pp.111-121
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• 2018

To find the emerging patterns (EPs) in streaming transaction data, the streaming is first divided into some time windows containing a number of transactions. Itemsets are generated from transactions in each window, and then the emergence of itemsets is evaluated between two windows. In the tilted-time windows model (TTWM), it is assumed that people need support data with finer accuracy from the most recent windows, while accepting coarser accuracy from older windows. Therefore, a limited array's elements are used to maintain all support data in a way that condenses old windows by merging them inside one element. The capacity of elements that accommodates the windows inside is modeled using a particular number sequence. However, in a stream, as new data arrives, the current array updating mechanisms lead to many null elements in the array and cause data incompleteness and inaccuracy problems. Two models derived from TTWM, logarithmic TTWM and Fibonacci windows model, also inherit the same problems. This article proposes a novel push-front Fibonacci windows model as a solution, and experiments are conducted to demonstrate its superiority in finding more EPs compared to other models.

• Journal of Magnetics
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• v.16 no.3
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• pp.300-303
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• 2011

The effect of the hot-compaction temperature on the microstructure and magnetic properties of anisotropic nanocrystalline magnets was investigated. The hot-compaction temperature was found to impact both the magnetic properties and the microstructure of die-upset magnets. The remanence of the isotropic precursor increases slightly with the improved hot-compaction temperature, and the grains start to grow on the flake boundary at higher hot-compaction temperatures. After hot deformation, it was found that the change in the magnetic properties was the inverse of that observed with the hot-compaction temperature. Microstructural investigation showed that die-upset magnets inherit the microstructural characteristics of their precursor. For the die-upset magnets, hot pressed at low temperature, scarcely any abnormal grain growth on the flake boundary can be seen. For those hot pressed at higher temperatures, however, layers with large equiaxed grains could be observed, which accounted for the poor alignment during the hot deformation, and thus the poor magnetic properties.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.27 no.8A
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• pp.779-785
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• 2002

This paper presents a phase-based stereo matching algorithm in order to efficiently extract 3-dimensional objects from two 2D images. Conventional phase-based methods, especially using windowed Fourier phases, inherit good properties in the case of hierarchical approaches, because they basically use a multi-resolution phase map. On the contrary, their computational costs are very heavy. Therefore, a fast hierarchical approach, using multi-resolution phase-based strategy and reducing the redundancy of phase calculations, is proposed in this pare. In addition, a structural matching algorithm on the phase domain is adopted to improve the matching quality. In experimental results, it is shown that the computation loads are considerably reduced about 8 times and stable outputs are obtained.

• Proceedings of the Korean Institute of Interior Design Conference
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• 2005.10a
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• pp.237-240
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• 2005

The types of China Ancientry Architecture are rich and colorful. Among all these architectures, the Traditional Residence Architecture have the closest relationship with the mass's life. Traditional Residence Architecture reflected the connotation of the culture, philosophy ideology, especially the relationship between dwelling house and the nature, which can't be ignored by our modern people as well as the modern design. Beijing Sahap-won residence architecture is one of the apotheosis of China Traditional Residence Architecture, it'svery suitable for family's habitation. There's brilliance layout in space; around symmetry and radioactivity in plane, discretion grade in line, independence and continuity in inner spatial, with high privacy and benignity, Before the development and explore of modern APT Architecture design, we should fully understand the feature of Ancientry Residence House, inherit and carry forward its culture. The proposed design is started from the consolidation of the traditional feature of Beijing Sahap-won and the modern residence architecture, therefore to satisfy the modern people's fierce pursuing to the traditional culture.

• Korean Institute of Interior Design Journal
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• v.26 no.1
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• pp.142-152
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• 2017

This study investigated Renaissance and Baroque architectural characteristics found in contemporary public buildings in Seoul, which are National Museum of Modern and Contemporary Art Seoul Branch(MMCA) and Dongdaemun Design Plaza(DDP). Among H. $W{\ddot{o}}lfflin^{\prime}s$ five categories for Renaissance-Baroque art study, four categories (Clearness/Unclearness, Plane/Recession, Closed form/Open form, Multiplicity/Unity) are applied for the analysis as the architectural issues of Transparency/Concealment, Exhibited/Experienced Depth, Formal/Figural, and Composed harmony/Generated Unity. As a result, MMCA showed the characteristics of the extreme of Modern classic such as transparency, homogenization of space, formalism, and composition of multiple elements. Meanwhile, the study could find various Baroque characteristics from DDP such as separation of indoor and outdoor, phenomenological depth, rule breaking, and generation of figure. The study finally argued that DDP would not be an anti-modern, but try to inherit and overcome the modern architecture to explore different possibilities, and that the similar relationship between Renaissance and Baroque art could be found in these two cases.

• Journal of Power Electronics
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• v.18 no.1
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• pp.23-33
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• 2018

Silicon Carbide (SiC) MOSFET belongs to the family of wide-band gap devices with inherit property of low switching and conduction losses. The stable operation of SiC MOSFET at higher operating temperatures has invoked the interest of researchers in terms of its application to high power density (HPD) power converters. This paper presents a performance study of SiC MOSFET based two-phase interleaved boost converter (IBC) for regulation of avionics bus voltage in more electric aircraft (MEA). A 450W HPD, IBC has been developed for study, which delivers 28V output voltage when supplied by 24V battery. A gate driver design for SiC MOSFET is presented which ensures the operation of converter at 250kHz switching frequency, reduces the miller current and gate signal ringing. The peak current mode control (PCMC) has been employed for load voltage regulation. The efficiency of SiC MOSFET based IBC converter is compared against Si counterpart. Experimentally obtained efficiency results are presented to show that SiC MOSFET is the device of choice under a heavy load and high switching frequency operation.

• Journal of Society of Preventive Korean Medicine
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• v.23 no.3
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• pp.59-70
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• 2019

Objectives : The aim of the research is to study the edible parts and cooking methods for the Korean medicinal plants using documents of Japanese occupation era. Through this study, we expect that it will be used as a basis data on further Korean traditional edible herb. Methods : The research analyze the usage of 74 species of medicinal plants that are listed in the 『Wild Food Plants of Chosen(Korea)』 along with analyzing 8 extra documents about famine relief plants and cooking method written during Japanese occupation. Results : The result shows that the sprouts and buds are the most popular for the edible purposes but they are never used for medical reason. Roots and fruits take the highest percentage when it comes to medical purposes. Types of medicinal plants that were used a lot of cooking methods were side dishes such as 'Namul, Saengchae, Jangajji'. Conclusions : Using medicinal plants for edible and medical purposes were traditionally familiar with Korean culture but the changes provoked by industrialization forbid the knowledge to pass through. However, recently, the trend of having a healthy life interests people to backtrack this traditional way of using medicinal plants with new purposes. To inherit traditional knowledge and for the future development of Korean traditional ingredients, further research should be conducted.