• Journal of the Korean Society of Costume
• /
• v.53 no.1
• /
• pp.17-34
• /
• 2003

This paper investigates the rank system of official uniforms of Qing dynasty to analyze ethnic characteristics of the official uniforms. As a research document, Qing Huidian Tu(청회전도) has been used. The official uniforms of Qing dynasty were chao-fu(조복), ji-fu(길복), chang-fu(상복), hang-fu(행복), and yu-fu(우복), which were used in different occasions. Each of the five official uniforms had distinct items. For example, chao-fu(조복) consisted of four items: chao-guan(조관), chao-fu(조복), chao-dai(조대), and chao-zhu(조주), and ji-fu(길복) consisted of four items: ji-fu-guan(길복관), long-pao(용포), ji-fu-dai(길복대), and chao-zhu(조주). Each of these items had elements that made distinction between ranks. This research shows that the important elements to make distinction between ranks were textiles, precious stones, patterns and colors, and additionally the number of Bo(보) and the types of Bo(보) were used.

• JSTS:Journal of Semiconductor Technology and Science
• /
• v.13 no.4
• /
• pp.361-366
• /
• 2013

A full-range analytic drain current model for depletion-mode long-channel surrounding-gate nanowire field-effect transistor (SGNWFET) is proposed. The model is derived from the solution of the 1-D cylindrical Poisson equation which includes dopant and mobile charges, by using the Pao-Sah gradual channel approximation and the full-depletion approximation. The proposed model captures the phenomenon of the bulk conduction mechanism in all regions of device operation (subthreshold, linear, and saturation regions). It has been shown that the continuous model is in complete agreement with the numerical simulations.

• Journal of the Korean Society of Costume
• /
• v.51 no.5
• /
• pp.95-111
• /
• 2001

The purpose of this study is to analyze the costumes of the master in Yuantaizi(원대자) tumulus murals and to examine the relation to the costumes of Koguryo(고구려). The Master appeared in Yuantaizi Tumulus Murals wear Wuguan(무관), Pingshangze(평상장) and Pao(포) These costumes were used as chaofu(조복) by Han race(한족) at that time. It is believed that Yuantaizi tumulus belongs to a tomb of Qian Yan(전연). So we can conclude that Qian Yan accepted costume systems of Han race. And similar costumes appear in Tumulus Murals of Koguryo built around Pyungyang(평양) and Anak(안악) in 4∼5 century. Especially the master's costumes of Anak Tomb No.3(안악3호분) are nearly the same as Yuantaizi's. Maybe it is closely related to the fact that the master of Anak Tomb No.3 is Dongsu (동수) who defected from Qian Yan.

• JSTS:Journal of Semiconductor Technology and Science
• /
• v.14 no.4
• /
• pp.451-456
• /
• 2014

A compact model of a depletion-mode silicon-nanowire (Si-NW) pH sensor is proposed. This drain current model is obtained from the Pao-Sah integral and the continuous charge-based model, which is derived by applying the parabolic potential approximation to the Poisson's equation in the cylindrical coordinate system. The threshold-voltage shift in the drain-current model is obtained by solving the nonlinear Poisson-Boltzmann equation for the electrolyte. The simulation results obtained from the proposed drain-current model for the Si-NW field-effect transistor (SiNWFET) agree well with those of the three-dimensional (3D) device simulation, and those from the Si-NW pH sensor model also agree with the experimental data.

• Proceedings of the Korea Contents Association Conference
• /
• 2018.05a
• /
• pp.415-416
• /
• 2018

육군은 국민들이 육군의 정책을 흥미 있으면서도 쉽게 이해할 수 있도록 유머 기법을 적용한 사진영상 홍보콘텐츠를 온라인 홍보에 적극 활용하고 있다. 본 연구에서는 유머가 육군에 관한 메시지 전달 기법으로 유용한지를 정교화 가능성 모델을 바탕으로 고 저유머 홍보 동영상을 고 저관여 집단에게 보여준 후 인지 정서적 요소(주의-기분-신뢰)와 태도에 어떻게 영향을 미치는지 살펴보았다. 그 결과 유머는 육군 홍보에 긍정적 요소로 작용하며, 주의와 기분 요소를 증가시키는데 기여하고, 이러한 주의와 기분 요소는 태도 형성에 상관관계가 있고 영향력이 높은 것으로 나타났다.

• Coupled systems mechanics
• /
• v.6 no.1
• /
• pp.75-96
• /
• 2017

As electron donor/acceptor materials for organic photovoltaic cells, small-molecules donors/acceptor are attracting more and more attention. In this work, we investigated the electronic structures, electrochemical properties, and charge carrier transport properties of four recently-synthesized small-molecule donors/acceptor, namely, DPDCPB (A), DPDCTB (B), DTDCPB (A1), and DTDCTB (B1), by a series of ab initio calculations. The calculations look into the electronic structure of singly oxidized and reduced molecules, the first anodic and cathodic potentials, and the electrochemical gaps. Results of our calculations were in accord with those from experiments. Using Marcus theory, we also computed the reorganization energies of hole/electron hoppings, as well as hole/electron transfer integrals of multiple possible molecular dimer configurations. Our calculations indicated that the electron/hole transport properties are very sensitive to the relative separations/orientations between neighboring molecules. Due to high reorganization energies for electron hopping, the hole mobilities in the molecular crystals are at least an order of magnitude higher than the electron mobilities.

• The Bulletin of The Korean Astronomical Society
• /
• v.46 no.2
• /
• pp.63.1-63.1
• /
• 2021

We present status of solar astronomy in North Korea through analysis of research papers written by North Korea scientists. For the study, we collected 42 papers published in North Korea and international journals. We have analyzed the papers statistically according to three criteria such as research subject, research field, and research members. The main research subjects are the sunspot (28%), observation system (21%), and space environments (19%). The research fields are distributed with data analysis (50%), numerical method (29%), and instrument development (21%). There have been 25 and 9 researchers in the solar astronomy and space environment, respectively since 1995. North Korea's solar research activities were also investigated in three area: instrument, solar physics, and international research linkage. PAO(Pyongyang Astronomical Observatory) has operated two of sunspot telescope and solar horizontal telescope for spectroscopy and polarimetry, but there is no specific information on solar radio telescopes. North Korea has cooperated in solar research with Europe and China. We expect that the results of this study will be used as useful resource in supporting astronomical cooperation between South and North Korea in the future.

• Tuberculosis and Respiratory Diseases
• /
• v.41 no.2
• /
• pp.103-110
• /
• 1994

To find out the predictors of nocturnal arterial oxygen desaturation in patients with respiratory diseases, transcutaneous oxygen saturation($StcO_2$) monitoring studies using a pulse oximeter were performed during sleep in 20 patients. $StcO_2$ was decreased more than 4% from the baseline value in 18 patients(90%) and more than 10%("Desaturator") in 8(40%). Five of the seven patients(71.4%) with awake $PaO_2$<60mmHg and three of the thirteen patients(23.1%) with awake $PaO_2{\geq}60mmHg$ were "desaturators". The awake $PaO_2/FIO_2$ and $PaO_2/PAO_2$ could distinguish "desaturator" from "nondesaturator", and $PaO_2,\;SaO_2$ or $StcO_2$ could not. These results suggest that the nocturnal oxygen desaturation depends on the severity of the underlying disease rather than the baseline $PaO_2$. Anthropomorphic and lung function factors could not separate between "desaturator" and "non-desaturator", and about a quater of patients with a wake $PaO_2{\geq}60mmHg$ developed significant desaturation. Therefore, it is necessary to monitor the nocturnal arterial oxygen saturation in patients with respiratory diseases regardless of their severity of airflow obstruction or awake $PaO_2$.

• Korean Journal of Microbiology
• /
• v.50 no.2
• /
• pp.128-136
• /
• 2014

Acyl homoserine lactone (AHL) lactonase has been proved to be the AHL-degrading enzyme with the highest substrate specificity for AHL molecules and has shown a considerable potential as low-cost and efficient quorum quenching (QQ) technique. However, few studies focused on its inhibitory effect on biofilm formation which is also a quorum sensing (QS)-regulated phenomenon. In this study, QQ activity of six isolates from biofouled reverse osmosis membranes was studied using Chromobacterium violaceum CV026 and Agrobacterium tumefaciens NTL4 as biosensors under various conditions. All of the isolates belonged to the genus Bacillus and showed QQ activity regardless of the acyl chain length or substitution of AHL molecule. The isolates were capable of significantly inhibiting biofilm formation (46.7-58.3%) by Pseudomonas aeruginosa PAO1 and produced heat-sensitive extracellular QQ substances. The LC-MS analysis of the QQ activity of a selected isolate, RO1S-5, revealed the degradation of N-(3-oxododecanoyl)-L-homoserine lactone (3-oxo-C12 AHL) and the production of corresponding acyl homoserine (3-oxo-C12-HS), which indicated the activity of AHL lactonase. The broad AHL substrate range and high substrate specificity suggested that the isolate would be useful for the control of biofilm-related pathogenesis and biofouling in industrial processes.

• Molecules and Cells
• /
• v.39 no.8
• /
• pp.594-602
• /
• 2016

Alkyl hydroperoxide reductase subunit C from Pseudomonas aeruginosa PAO1 (PaAhpC) is a member of the 2-Cys peroxiredoxin family. Here, we examined the peroxidase and molecular chaperone functions of PaAhpC using a site-directed mutagenesis approach by substitution of Ser and Thr residues with Cys at positions 78 and 105 located between two catalytic cysteines. Substitution of Ser with Cys at position 78 enhanced the chaperone activity of the mutant (S78C-PaAhpC) by approximately 9-fold compared with that of the wild-type protein (WT-PaAhpC). This increased activity may have been associated with the proportionate increase in the high-molecular-weight (HMW) fraction and enhanced hydrophobicity of S78C-PaAhpC. Homology modeling revealed that mutation of $Ser^{78}$ to $Cys^{78}$ resulted in a more compact decameric structure than that observed in WT-PaAhpC and decreased the atomic distance between the two neighboring sulfur atoms of $Cys^{78}$ in the dimer-dimer interface of S78C-PaAhpC, which could be responsible for the enhanced hydrophobic interaction at the dimer-dimer interface. Furthermore, complementation assays showed that S78C-PaAhpC exhibited greatly improved the heat tolerance, resulting in enhanced1 survival under thermal stress. Thus, addition of Cys at position 78 in PaAhpC modulated the functional shifting of this protein from a peroxidase to a chaperone.