• Tunnel and Underground Space
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• v.5 no.3
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• pp.223-229
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• 1995

During excavation works for underground facilities, temporary tieback wall with earth anchor system was investigated for safety's sake. An excavation 9.7 meter deep was monitored by slope inclinometer in twelve measuring points. Instrumented lateral displacements of the wall during 177 days are represented. Especially, lateral displacements of the two positions under completely different condition are compared to investigate the effect of backfilling between soldier pile and the soil behind wall. The deformation behaviors of the wall according to both depth and elasped time are discussed. Finally, a numerical analysis by the program FLAC was performed, and calculated displacements are compared to measured ones.

• Proceedings of the Korea Electromagnetic Engineering Society Conference
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• 2001.11a
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• pp.44-48
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• 2001

In this paper we describe the design of symbol timing and carrier synchronization algorithms for burst receiver. The demodulator consists of digital down converter, matched filter and synchronization circuits. For symbol timing recovery we use modified Gardner algorithm. And we use decision directed method for carrier phase recovery. For the sake of performance analysis, we compare simulation results with the board implemented by FPGA which is APEX20KE series chip for Alter. The performance results show it works quite well up to the condition that a frequency offset equal to 0.1% of symbol rate.

• Journal for History of Mathematics
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• v.12 no.2
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• pp.119-133
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• 1999

In this paper, we consider the abstraction of mathematics and arts. In particular, we compare cave arts of Palaeolith stone ages with those of Neolith stone ages and analyze paintings of a child. After the Middle ages, in Renaissance period the new technique, perspective was introduced by painters for the sake of realistic description. We consider the social background of perspective. In 19th century, European society became familiar with the abstraction of mathematics and arts. And we also study the mathematical concepts and the abstract paintings on the basis of the social backgrounds.

• The Korean Journal of Air & Space Law and Policy
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• v.16
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• pp.65-74
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• 2002

The Japanese Aviation Accident Investigation Board has two faces. While the surface of the Board is a one of the very accident investigation organ, its shadow face is a one of the very expert witness drawing up a requested written opinion for the sake of the criminal investigation of the Police under the two secret inter-ministerial accords. This Paper proposes that some evidence obtained by investigation ought to be protected for disclosure and use by privilege derived from on of our most basic legal principles: "Nemo debet se-ipsem accusare-no one is required to incriminate oneself-".

• The Pure and Applied Mathematics
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• v.25 no.4
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• pp.229-241
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• 2018

In the present study, we derive the problem of constructing a hypersurface family from a given isogeodesic curve in the 4D Galilean space $G_4$. We obtain the hypersurface as a linear combination of the Frenet frame in $G_4$ and examine the necessary and sufficient conditions for the curve as a geodesic curve. Finally, some examples related to our method are given for the sake of clarity.

• Applied Biological Chemistry
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• v.9
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• pp.59-64
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• 1968

Takju (Korean native Sake) was mashed with two different materials. One of the material was polished rice and Nuruk(mold wheat), the other one was corn and Nuruk. The amino acids in those fermenting mashes were identified by paper partition chromatography at regular intervals. The results were summarized as follows; a) Following 14 kinds of amino acids were identified in the mash of rice material; lysine, valine, proline, leucine, serine, glycine, aspartic acid, alanine, cystine, tyrosine, histidine, glutamic acid, tryptophan and phenylalanine b) Following 12 kinds of amino acids were identified in the mash of corn material; lysine, valine, proline, leucine, serine, glycine, aspartic acid, alanine, cystine, histidine, argrinine and tryptophan. c) The main amino acids in the Takju mash according to the color density of the each amino acid spot on the paper chromatograms were checked as lysine, valine, leucine, serine, proline and glycine.

• Journal of the Korean Society of Fisheries and Ocean Technology
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• v.51 no.2
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• pp.227-234
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• 2015

To obtain geographical range and growth-kinetics parameters of mottled sake (Beringraja pulchra) populations in the Yellow Sea, three mark-recapture experiments were carried out. Overall, 991 tagged individuals were released, and 4.1% of them were recaptured with the mean release period of 339 d (range, 8-1,420 d) and the mean growth rate of $1.4cm\;mon^{-1}$ (female, $1.5cm\;mon^{-1}$; male $1.3cm\;mon^{-1}$). In the first experiment, 667 individuals were released at Heuksan Island from April to June, 2007-2009, and 30 individuals were recaptured mainly at the north and the north-east coasts of the island, indicating absence of migration to the south of the island. In the second experiment, 323 individuals were released at several fishing grounds scattered in the Yellow Sea in 2010-2013, and 11 individuals were recaptured at points deviated to all directions from the releasing points. As the last, one individual was released with pop-up satellite archival tag at a costal point ($34^{\circ}37.2$'N, $124^{\circ}59.3$'E) off Hong Island on May 21, 2010. The tagged individual migrated to a north-east location ($35^{\circ}50.4$'N, $126^{\circ}03.6$'E) of Eocheong Island by Aug. 25, 2010. The data archived for the three months in the tag indicated that the migration path had depths of 48-80 m and temperature of $12.6-14.4^{\circ}C$. The results indicated that mottled sake populations had a localized habitat ranges at the north of Heuksan Island and the west of Hong Island while growing at the rate of $1.4cm\;mon^{-1}$.

• Journal of Korea Entertainment Industry Association
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• v.15 no.3
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• pp.101-125
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• 2021

This paper aims from various angles to examine the context of the problem situations that Jang Woo-Jae describes from contemporary korean society, to examine which chance of thinking is in this case given to the audience, and to examine whether through the plays in the theater this chance of thinking can be referred to public opinion. This study considers not only the contribution of Jang's thought experiment that is connected to the dramaturgical function including the aspects of dramatic form and content to dramatic effects for the audience, but also the possibility of an arrangement for a new way of thinking by the audience. Thus, Jang's thought experiment should be understood in connection with the whole message of his plays. And this study researches, how an new attention to the public nature of common world, which should be demanded for the sake of a mature civil society comes into existence within the point of contention in every play based on Jang's thought experiment. Finally this paper inspects through Jang's plays the possibility of contribution of performing art to contemporary korean society, and takes account of self-examination in meta-dimension of the theater regarding the role and meaning for the sake of human being and gemeinschaft.

• Journal of the Korean Institute of Telematics and Electronics
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• v.13 no.2
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• pp.14-22
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• 1976

This research was started to develop a VHF television antenna which secures good pictures in spite of the disturbance from tile rear side. In a year of research, an antenna which front to banck ratio is gyrator than 30dB and whose side lobe level is smaller than -30dB alas been developed. This new antenna was designed log-periodically for the sake of wide frequency bandwidth which is necessary to cover all tile high channel. And it was found having characteristics of anti-interference against the disturbance wave from tole behind, and anti-ghosts from the reflected waves. Furthermore, the gain of this new antenna is reasonablly high, because of its low side lobe level. After all, the developed antenna is silpposcd to increace the service area considervably and to improve the TV receiving certainly.

• Journal of Microbiology and Biotechnology
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• v.16 no.5
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• pp.661-666
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• 2006

The present study represents the investigation of in vitro immunopotentiating activities of cellular fractions of major lactic acid bacteria found in kimchi (KLAB) and bifidobacteria. The macrophage cells, RAW264.7, were stimulated with heat-killed whole-cell, cell-wall, and cytoplasmic fractions of four strains of KLAB (Leuconostoc mesenteroides, Leuconostoc citreum, Lactobacillus plantarum, and Lactobacillus sake) and two strains of bifidobacteria (Bifidobacterium longum and Bifidobacterium lactis) each, and then the production of nitric oxide (NO) and cytokines including tumor necrosis $factor-\alpha\;(TNF-\alpha)$ and interleukin-6 (IL-6) was measured by Griess and ELISA assays, respectively. Heat-killed wholecell and cell-wall fractions-but not the cytoplasmic fraction-from all strains of KLAB significantly increased the production of NO in RAW264.7 cells, and all fractions from bifidobacteria exerted similar effects. In the production of $TNF-\alpha$, heat-killed whole-cell and cell-wall fractions of L. plantarum showed the strongest effect, followed by L. sake and B. lactis, whereas other KLAB fractions did not exert any effect. In the production of IL-6, only whole-cell and cell-wall fractions of L. plantarum were effective. These results, taken together, indicate that L. plantarum might playa critical role in the immunopotentiating activities of kimchi.