한국산업표준(KS)에 따른 로크웰 경도 시험기의 불확도 산정에 관한 연구

탁내형,방건웅 한국열처리공학회 2000 熱處理工學會誌 Vol.13 No.3

Recently, uncertainty of hardeness became a major concern for the people working on the laboratory evaluation and accreditation. It is required to indicate uncertainty of hardness tester on the report after calibration. In addition to this, uncertainty of certified hardness reference block is also required to indicate on the certification sheet. Method on the evaluation of uncertainty in hardness measurement is agreed only recently for Rockwell hardness C scale. In this paper, a preliminary calculation of uncertainty based on type B evaluation has been made for hardness testers which satisfies the requirements of Korean Standards. It was found that the tolerance limit of mean value specified in KS should be increased to be compatible with the calculated uncertainty.

Design and measurement of beam reconfigurable antenna based on folded dipole structure

Bahng, K.,Jung, C.W.,Kim, K. IET 2009 Electronics letters Vol.45 No.3

<P>A reconfigurable antenna based on a folded dipole structure has been designed to operate at 2.45 GHz. The antenna consists of a folded dipole and a reflector. Depending on the states of the switches, the antenna symmetrically changes its shape and thus steers the beam pattern. The measured reflection coefficient and radiation pattern are presented. Also, the antenna is shown to have a larger gain with the reflector than without.</P>

Comparison of Design Preferences in the Hawaiian Shirt and Current Market

Bahng, Youngjin,Reilly, Andrew The Society of Fashion and Textile Industry 2018 한국의류산업학회지 Vol.20 No.4

The Hawaiian shirt, also known as the Aloha shirt, is a short-sleeved, colorful shirt with traditional Polynesian designs (e.g., hibiscus, fish) originating in Hawai'i. The shirt was selected for study because it is a unique garment that originated in the Hawaiian Islands in the late $19^{th}$ and $20^{th}$ centuries and marketed as a tourist product but was eventually adopted as appropriate residential clothing by the $mid-20^{th}$ century, however with different aesthetic details. Today, it is assumed by Hawaiian Island residents that tourists demonstrate poor taste when selecting a Hawaiian shirt. The purposes of this study are to examine the validity of the assumption that tourist taste and resident taste in Hawaiian shirts are different and to investigate the current Hawaiian shirt market change. For this study, 555 questionnaires were obtained from tourists and residents, and 10 Hawaiian shirt retailers/wholesalers participated in in-depth interviews. The results indicated that differences do exist between tourists' and residents' preferences for print designs and colorway. The market change of Hawaiian shirts was also recognizable in that an increasing number of tourists select Hawaiian shirts similar to resident customers, as part of their routine lives rather than as holiday or vacation garments. Other differences in Hawaiian shirt shopping behavior included the findings that tourists consider fabrication less important than resident customers who consider fabrication more (i.e., cotton 100%). By using both quantitative and qualitative methods, this study contributes to the fashion design and marketing field as well as help manufacturers and retailers with their merchandise and distribution plans.

名詞に接續する「せいで」の意味と機能

( Bahng Yoon-hyung ) 한국일어일문학회 2019 日語日文學硏究 Vol.110 No.-

본 논문은 명사에 접속하는 “세이데(せいで)”의 의미와 기능에 대하여 분석, 고찰 한 것이다. “세이데(せいで)”가 기본적으로 “바람직하지 않은 결과”를 나타낸다는 점을 지적한 것은 종래에 연구사례가 많이 있으나, “바람직한 결과”를 나타내는 것 같은 예문이 있다는 지적은 종래의 연구에서 거의 보이지 않는다. 또한 “세이데(せいで)”가 단문에서 사용될 때와 복문에서 사용될 때는 다른 특징이 보이지만 이것을 구분하여 고찰한 연구는 이루어진 적이 없다. 따라서 본 논문에서는 우선 단문에서 사용되는 경우와 복문에서 사용되는 경우를 구분하고, “바람직하지 않은 결과”를 나타내는 경우와 “바람직한 결과”를 나타내는 경우로 세분하여 각각의 특징에 대하여 기술하는 것을 목표로 했다. 그 결과는 다음과 같이 정리할 수 있다. 첫째, “세이데(せいで)”가 단문에서 사용되는 경우는 기본적으로 “바람직하지 않은 결과”를 나타낸다. 그러나 “바람직한 결과”를 나타내는 예문도 10례가 확인되었다. 이와 같은 단문에서 사용되는 경우, 전접명사가 “바람직하지 않은 결과” 와 “바람직한 결과”의 양쪽에 중복되는 경우는 보이지 않았다. 둘째, “세이데(せいで)”가 복문에서 사용되는 경우는 다음과 같이 ①“바람직하지 않은 결과”+“바람직하지 않은 결과”, ②“바람직하지 않은 결과”+“바람직한 결과”, ③“바람직한 결과”+“바람직하지 않은 결과”, ④“바람직한 결과”+“바람직한 결과”를 나타내는 경우의 네 가지로 나눌 수 있다. 이중에서 ③과 ④의 경우에도 “오카게데(おかげで)”가 아니라 “세이데(せいで)”가 사용되는 것을 알 수 있었다. 한편, 단문과 복문의 양쪽에서 사용된 전접명사는 개별어수로 14개가 확인되었다. 이상의 내용을 종합하면 종래의 연구결과와는 다르게, 단문에서는 명사에 접속하는 “세이데(せいで)”는 “바람직하지 않은 결과”뿐만 아니라 “바람직한 결과”도 나타낼 수 있으며, 복문에서는 “세이데(せいで)”의 바로 뒤에도 “바람직한 결과”가 올 수 있다고 말할 수 있다. In this paper, the meanings and the functions of "seide" connected with nouns are examined and analyzed. A lot of previous research papers reported that “seide” commonly represents “undesirable results” in the sentences, but none of them showed that “seide” has the opposite meaning of “desirable results” in some example sentences. “Seide” has different characteristics when it is used in the simple sentence and used in the complex sentence. However, no previous literature has separately focused on two cases of sentences. In the paper the different cases of “seide” in the simple sentence and in the complex sentence are distinguished and analyzed. More detailed investigations are classified with the meanings of “undesirable results” and “desirable results”. The results can be summarized as follows. First, when "seide" is used in a simple sentence, it basically indicates the meaning of "undesirable result". However, ten example sentences exist and confirm that “seide” surprisingly has the opposite meaning of "desirable results". Second, when "seide" is used in a complex sentence, four cases can be considered as in the below: ①"undesirable result"+"undesirable result", ②"undesirable result"+"desirable result", ③"desirable result”+"undesirable result", and ④"desirable result”+"desirable result". Among them, ③ and ④ cases show that "seide" is used instead of "okagede". In conclusion, "seide" connected with nouns shows the meaning of “desirable results” in the special cases of the simple sentences although it represents “undesirable results” in most simple sentences. Similarly in several complex sentences, the predicates right after “seide” are somtimes used to have the meaning of “desirable results”.

Apoptosis-Induced Gene Profiles of a Myeloma Cell P3-X63-Ag8.653

Bahng, Hye-Seung,Chung, Yong-Hoon The Korean Association of Immunobiologists 2006 Immune Network Vol.6 No.3

Background: Apoptosis is a physiologic phenomenon involved in development, elimination of damaged cells, and maintenance of cell homeostasis. Deregulation of apoptosis may cause diseases, such as cancers, immune diseases, and neurodegenerative disorders. The mouse myeloma cell P3-X63-Ag8.653 (v653) is an HGPRT deficient $(HGPRT^-)$ mutant strain. High dependency on de novo transcription and translation of aminopterin induced apoptosis of this cell seems to be an ideal experimental system for searching apoptosis-induced genes. Methods & Results: For searching apoptosis-related genes we carried out GE-array (dot blot), Affymetrix GeneChip analysis, Northern analysis and differential display-PCR techniques. The chip data were analyzed with three different programs. 66 genes were selected through Affymetrix GeneChip analyses. All genes selected were classified into 8 groups according to their known functions. They were Genes of 1) Cell growth/maintenance/death/enzyme, 2) Cell cycle, 3) Chaperone, 4) Cancer/disease-related genes, 5) Mitochondria, 6) Membrane protein/signal transduction, 7) Nuclear protein/nucleic acid binding/transcription binding and 8) Translation factor. Among these groups number of genes were the largest in the genes of cell growth/maintenance/death/enzyme. Expression signals of most of all groups were peaked at 3 hour of apoptosis except genes of Nuclear protein/nucleic acid binding/transcription factor which showed maximum signal at 1 hour. Conclusion: This study showed induction of wide range of proapoptotic factors which accelerate cell death at various stage of cell death. In addition apoptosis studied in this research can be classified as a type 2 which involves cytochrome c and caspase 9 especially in early stages of death. But It also has progressed to type 1 in late stage of the death process.

Trench Formation on Ion Implanted SiC Surfaces after Thermal Oxidation

Bahng, Wook,Song, Geun Ho,Kim, Nam Kyun,Kim, Sang Cheol,Kim, Hyoung Wook,Seo, K.S.,Kim, Eun Dong Trans Tech Publications, Ltd. 2005 Materials science forum Vol.483 No.-

<P>The effects of the damage induced during ion implantation on the surface roughening and oxide growth rate were investigated. Using several scheme of doses and acceleration energies, it is found that the amount of the dose predominantly produce damage rather than the acceleration energy, especially near the surface region. It was also found that the damage affects not only the oxide growth rate but also the surface roughening during high temperature annealing. The edge of highly implanted area may have higher doping concentration due to the vicinal side wall effect of the thick oxide mask for ion implantation. It was confirmed by the trench formation after thermal oxide remove.</P>

THE RESPONSE OF THE INDIAN STOCK MARKET TO THE MOVEMENT OF ASIA'S EMERGING MARKETS : FROM ISOLATION TOWARD INTEGRATION?

Bahng, Seungwook 연세대학교 동서문제연구원 2003 Global economic review Vol.32 No.2

This paper investigates the existence of the inter-dependence between the Indian stock market and Asia's emerging markets since 1990. This study analyzes whether the MSCI Asian Index has significantly influenced the Bombay Stock Exchange Index before, during, and after the Asian financial crisis. To address this issue, the author first uses a rolling correlation, and conduct uni-directional and bi-directional causality tests using the Granger causality test. He then examines the impulse response functions and variance decompositions of forecast errors based on a VAR (vector auto-regression) model. These tests provide evidence that the influence of the Asian market on the Indian market has increased during and after the Asian financial crisis. These results can be interpreted as evidence that the Indian market has been moving toward integration with other Asian markets.

INTERACTIONS OF STOCK MARKETS WITHIN THE GREATER CHINA ECONOMIC BLOC

Bahng, Seung-Wook,Shin, Seung-Myo 연세대학교 동서문제연구원 2004 Global economic review Vol.33 No.3

This paper investigates what types of mutual relationships exist among the stock markets of the Greater China economic bloc, which include stock markets in Hong Kong and Taiwan, as well as stock markets in Shanghai and Shenzhen. Using the unit root test, co-integration analysis, and vector error correction model (VECM), this paper analyzes interrelationships among daily stock indices for the period from the beginning of 1992 to the end of 2001. Test results indicate the existence of one co-integrating vector, implying that a long-run equilibrium relationship holds among the four stock indices. Variance decomposition of forecast errors provides evidence that the Shenzhen stock market is the market most heavily influenced by the unexpected variations of other markets in the Greater China economic bloc.

Viscosities of Supercooled Water and Other Liquids

Bahng, Jun-Su,Hahn, Sang-Joon,Jhon, Mu-Shik Korean Chemical Society 1971 대한화학회지 Vol.15 No.4

Significant structure theory has been applied to the viscosities of supercooled liquids with success. In the supercooled region, the effect of free volume decrease is so significant that the thermal effects on the solid-like volume must be considered properly. In addition, the two state theories proposed by Jhon and Eyring for water and Litovitz et al. for boron trioxide have been successfully applied to the structure change in the liquid state. Considered liquids are benzene, carbon tetrachloride, p-xylene, water and boron trioxide.

Two Stage Damage Identification by Combination of Damage Indicator Method and Neural Networks

Bahng, Eun-Young 동양대학교 2000 동양대학교 논문집 Vol.6 No.1

본 논문은 토목구조물의 부재단위의 손상도 추정법에 관한 내용이다. 본 논문에서 제시되는 방법은 과도한 미지수로 인한 문제를 피하기 위하여 2단계로 이루어진다. 먼저 손상지수법을 이용한 손상부재 탐색절차와 신경망을 사용한 손상정도 추정절차로 단계화 되어있다. 모드자료의 불확실성은 신경망의 노이즈첨가 학습을 적용하여 최소화하였으며, 모드형상 자료의 불완전한 측정문제를 극복하기 위하여 부분구조법 개념을 도입하였다. 제시된 방법의 효율성을 보이기 위해 트러스 구조물에 대한 예제해석을 수행하여 2단계 방법이 손상정도를 추정하는데 정확도를 향상시킴을 확인하였다.