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        • Consideration Related to the Aharonov-Bohm Effect

          Khang,Jeong-woo,Khang,Dong-shik 제주대학교 1987 논문집 Vol.24 No.-

          Aharonov-Bohm 효과를 WKB방법을 사용해서 설명하고, 국소장 이론으로 자연을 서술하는 방법의 타당성에 대해 고찰하였다.

        • KCI등재

          쯔놈과 놈 문학-중대 베트남 문화의 찬란한 성과

          Dinh Thi Khang 조선대학교 국제문화연구원 2009 국제문화연구 Vol.2 No.1

          '스콜라' 이용 시 소속기관이 구독 중이 아닌 경우, 오후 4시부터 익일 오전 7시까지 원문보기가 가능합니다.

          After obtaining the nation’s independence, Vietnam feudal dynasties continued to use Han as the official script. However, to satisfy people’s daily need, Nom was created and became an outstanding accomplishment in Vietnamese literature, which expressed the national esteem, power as well as position of Vietnamese language. Nom script was steadily improved, and Vietnamese people started to use Nom in literature work from XIII century. This was a significant improvement in national esteem and as well as a remarkable development in literature. History of Nom literature spread in seven centuries and was divided into four periods: Period 1 (the X century - the XIV century): Come along with Han, Nom script started to appear in literature since Tran’s dynasties. This is the vital achievement in the period which set up the basis for the development of composing in national language in the following centuries. Period 2 (the XV century -the XVII century): Besides accomplishments in Han compositions, Nom literature with diverse styles was well developed and attained worthy achievements, which set a firm fundamental for the development later on. The success of Tho Nom Duong luat was marked with the existence of massive collections (including hundreds of poems). This time was the outstanding period in the literature history. Period 3 (the XVIII century - the beginning of XIX century): This time was considered as the golden age in the history with a notable development in Nom literature. With traditional literary styles, compositions written in Nom created masterpieces in literary heritages. Period 4 (from the late XIX century): In transformation process of national literature from medieval to modern, Nom compositions continuously played an importance role in create the unique features in this stage. The appearance and development of Nom literature is a must in the Vietnamese literature history in the process of building up our literature, In this process, the compositions written by several famous authors, for example Nguyen Trai, Nguyen Binh Khiem, Doan Thi Diem, Nguyen Gia Thieu, Ho Xuan Huong, Nguyen Du, Nguyen Dinh Chieu, Nguyen Khuyen, Tu Xuong, and etc., have created a series of valued masterpiece; among those, ‘Doan truong tan thanh’ (Truyen Kieu) written by Nguyen Du is consider the number one masterpiece. Hence, Nom literature achievement has claimed an important role of Vietnamese language in literature compositions. The appearance of Nom script and Nom literature are astounding successes of Vietnamese literature in medieval period. With Nom written language, so many traditional literary styles were created and added worthy values into Vietnamese literature. The first achievement was to vietnamize Duong luat style to make up Tho Nom Duong luat - a style of poetry of which all the features of Vietnamese poetry were taken into account. The second success was creating two kinds of whtten compositions named Truyen Nom and Khuc ngam song that luc bat on the basis of folk poetry (six-eight meter and double seven six-eight meter style) In Nom compositions, public language used to be considered informal speech was brought into written work. The process of setting up Nom literature was the development of language selection and usage as well as the improvement in expression abilities and art level of national language. Nom compositions insisted the values, fates, right of existence and aspirations of human, especially those of women. Those were the general topics in our literature which followed humanism. As a result, democracy in content which required nationalized manners of expression in terms of written language, style of poetry and speech became the norm in Vietnamese literature. Vietnam has officially been a member of IRG since 2000. Written Nom has been encoded to add into international symbol system with similar script in the area. As a result, Nom written language created by Vietnamese people has been internationally recognized as a unique contribution to the cultural treasure of humanity.

        • Truyện nôm – hiện tượng văn hoá và Thể loại văn học đặc biệt của thời trung đại ở Việt Nam

          Đinh Thị Khang 조선대학교 국제문화연구원 2010 국제문화연구 Vol.3 No.1

          The unique genre, Nom Literature and its cultural phenomenon during the medieval period in Vietnam. Dinh Thi Khang Truyen Nom was sin-eight metre written in Nom. The existence and value of Truyen Nom is a unique culture phenomenon in the history of Vietnamese culture. During the medieval period (10th–19th C) in Vietnam, the less popularity of Han prose poem led to a decline in the number of Nom prose composed. Truyen Nom was created based on the need for social and cultural reflection and lasted for four centuries. During four century history, Truyen Nom reached its peak in the 18C until the first half of 19C. With a wide dissemination and strong influence, Truyen Nom became the most prominent compositional style and played the important role in the society in terms of spiritual, cultural and civil reflection. Besides written work, Truyen Nom also existed in spoken compositions about daily life which were popularized in public through folk song, lullaby, tales and folk quizzes. The collection of Truyen Nom now includes about 100 pieces of work and processes a number of great compositions such as Hoa Tien, Phan Tran, Quan Am Thi Kinh, Hoang Truu, Pham Tai Ngoc Hoa and Doan Truong Tan Thanh(also known as Truyen Kieu). Truyen Nom was actually divided into two main different types: academic compositions and conventional work. The diversity of Truyen Nom in terms of contents, characters and literary speech made up great literacy and cultural values. The main content of Truyen Nom related to human values and destiny; some were about the aspiration for the freedom of love beyond feudal morality. Others were written about people’s life and personality who fought against oppressive influence to save the family’s happiness and to maintain social justice. The traditional medieval attitude of art brought into Truyen Nom a range of Orientation’s theoretical value in character creation and problem resolution.

        • SCOPUSKCI등재

          Burden of Noncommunicable Diseases and National Strategies to Control Them in Korea

          Khang, Young-Ho The Korean Society for Preventive Medicine 2013 Journal of Preventive Medicine and Public Health Vol.46 No.4

          Noncommunicable diseases (NCDs) are the most important causes of premature mortality and disability-adjusted life years in Korea. NCDs are also the main contributor to socioeconomic inequalities in mortality and life expectancy. Reduction of NCDs and NCD inequalities would result in significant improvement in healthy life expectancy and health equity in Korea. Major NCD risk factors such as dietary risks (including salt intake), alcohol consumption, cigarette smoking, and high blood pressure were found to be the leading modifiable risk factors of disability-adjusted life years in Korea, based on the 2010 Global Burden of Disease Study. Several Korean studies have shown that these risk factors play an important role in creating socioeconomic inequalities in NCD mortality and total mortality. Current international discussions on NCD policies in the United Nations and the World Health Organization would provide better opportunities for developing aggressive population-wide policy measures in Korea. Considering the paucity of population-wide policies to control major NCD risk factors in Korea, rigorous population approaches such as taxation and regulation of unhealthy commodities as well as public education and mass campaigns should be further developed in Korea.

        • SCOPUSKCI등재

          Preparation and Characterization of Small Intestine Submucosa Powder Impregnated Poly(L-lactide) Scaffolds: The Application for Tissue Engineered Bone and Cartilage

          Khang, Gilson,Rhee, John M.,Shin, Philkyung,Kim, In Young,Lee, Bong,Lee, Sang Jin,Lee, Young Moo,Lee, Hai Bang,Lee, Ilwoo The Polymer Society of Korea 2002 Macromolecular Research Vol.10 No.3

          In order to endow with new bioactive functionality from small intestine submucosa (SIS) powder as natural source to poly (L-lactide) (PLA) and poly (lactide-co-glycolide) (PLGA) synthetic biodegradable polymer, porous SIS/PLA and SIS/PLGA as natural/synthetic composite scaffolds were prepared by means of the solvent casting/salt leaching methods for the possibility of the application of tissue engineered bone and cartilage. A uniform distribution of good interconnected pores from the surface to core region was observed the pore size of 40~500 ${\mu}{\textrm}{m}$ independent with SIS amount using the solvent casting/salt leaching method. Porosities, specific pore areas as well as pore size distribution also were almost same. After the fabrication of SIS/PLA hybrid scaffolds, the wetting properties was greatly enhanced resulting in more uniform cell seeding and distribution. Five groups as PGA non-woven mesh without glutaraldehyde (GA) treatment, PLA scaffold without or with GA treatment, and SIS/PLA (Code No.3 ; 1 : 12 of salt content, (0.4 : 1 of SIS content, and 144 ${\mu}{\textrm}{m}$ of median pore size) without or with GA treatment were implanted into the back of nude mouse to observe the effect of SIS on the induction of cells proliferation by hematoxylin and eosin, and von Kossa staining for 8 weeks. It was observed that the effect of SIS/PLA scaffolds with GA treatment on bone induction are stronger than PLA scaffolds, that is to say, in the order of PLA/SIS scaffolds with GA treatment > PLA/SIS scaffolds without GA treatment > PGA nonwoven > PLA scaffolds only with GA treatment = PLA scaffolds only without GA treatment for the osteoinduction activity. The possible explanations are (1) many kinds of secreted, circulating, and extracellular matrix-bound growth factors from SIS to significantly affect critical processes of tissue development and differentiation, (2) the exposure of SIS to GA resulted in significantly calcification, and (3) peri-implant fibrosis due to covalent bonding between collagen molecule by crosslinking reaction. In conclusion, it seems that SIS plays an important role for bone induction in SIS/PLA scaffolds for the application of tissue engineering area.

        • KCI등재

          The Relationship Between Corporate Governance and Underpricing: A Case Study in Ho Chi Minh Stock Exchange

          Khang Hoang TRAN,Diep Thi Ngoc NGUYEN,Adriana KNAPKOVA,Florin ALIU 한국유통과학회 2021 The Journal of Asian Finance, Economics and Busine Vol.8 No.7

          Underpricing signifies that IPO share prices do not reflect the fundamental value of the listed company. Corporate governance plays an essential role in IPOs where the board of directors, the independent board of directors, and the board of supervisors are significant elements of accurate share pricing. The study investigates the underpricing phenomena and short-term performance of the IPO companies during the listing process in the Ho Chi Minh Stock Exchange (HOSE). The work outcomes illustrate the role of the corporate organizational structure in the period of the IPO process that may attract potential investors. The hypothesis testing is conducted with a multiple regression model including 100 observations from enterprises doing IPO listed on HOSE. The study results generate signals for the investors and regulators that the board of directors holds a strong negative influence on the underpricing process. Secondly, the level of the independent board of directors and stock exchange in itself has no significant impact on the underpricing process. Underpricing is one of the many anomalies of the stock exchanges that provide wrong signals for the market participants. Identifying stock prices that reflect their intrinsic value is an ongoing debate among scholars, investors, and other market participants.

        • Expression of epithin in mouse preimplantation development: Its functional role in compaction

          Khang, Inkoo,Sonn, Seongkeun,Park, June-Hee,Rhee, Kunsoo,Park, Dongeun,Kim, Kyungjin Elsevier 2005 Developmental biology Vol.281 No.1

          <P><B>Abstract</B></P><P>The preimplantation development of mammalian embryo after fertilization encompasses a series of events including cleavage, compaction, and differentiation into blastocyst. These events are likely to be associated with substantial changes in embryonic gene expression. In the present study, we explored the expression patterns and function of epithin, a mouse type II transmembrane serine protease, during preimplantation embryo development. RT-PCR analysis showed that epithin mRNAs were detectable during the cleavage stages from a 1-cell zygote to the blastocyst. Immunocytochemical studies revealed that epithin protein was expressed at blastomere contacts of the compacted 8-cell and later embryonic stages. Epithin colocalized with E-cadherin at the membrane contacts of the compacted morula-stage embryo as revealed by double-staining immunocytochemistry and confocal microscopy, respectively. Post-transcriptional epithin gene silencing by RNA interference (RNAi) resulted in the blockade of 8-cell in vitro-stage embryo compaction and subsequent embryonic deaths after several rounds of cell division. These results strongly suggest that epithin plays an important role in the compaction processes that elicit the signal for the differentiation into trophectoderm and inner cell mass.</P>

        • KCI등재

          LINDELOFICATION OF FRAMES

          Khang, Mee Kyung The Kangwon-Kyungki Mathematical Society 2007 한국수학논문집 Vol.15 No.2

          We introduce a concept of countably strong inclusions ${\triangleleft}$ and that of ${\triangleleft}-{\sigma}$-ideals and prove that the subframe $S({\triangleleft})$ of the frame ${\sigma}IdL$ of ${\sigma}$-ideals is a Lindel$\ddot{o}$fication of a frame L. We also deal with conditions for which the converse holds. We show that any countably approximating regular $D({\aleph}_1)$ frame has the smallest countably strong inclusion and any frame which has the smallest $D({\aleph}_1)$ Lindel$\ddot{o}$fication is countably approximating regular $D({\aleph}_1)$.

        • SCIESCOPUSKCI등재

          Yield and Chemical Composition of Cassava Foliage and Tuber Yield as Influenced by Harvesting Height and Cutting Interval

          Khang, Duong Nguyen,Wiktorsson, Hans,Preston, Thomas R. Asian Australasian Association of Animal Productio 2005 Animal Bioscience Vol.18 No.7

          A 3${\times}$4 factorial field experiment with a complete randomised split-plot design with four replicates was conducted from June 2002 to March 2003 at the experimental farm of the Nong Lam University, Ho Chi Minh City, Vietnam, to determine effects of different harvesting heights (10, 30 and 50 cm above the ground) and cutting intervals (45, 60, 90 and 285 days) on yield of foliage and tubers, and chemical composition of the foliage. Cassava of the variety KM 94 grown in plots of 5 m${\times}$10 m at a planting distance of 30 cm${\times}$50 cm was hand-harvested according to respective treatments, starting 105 days after planting. Foliage from the control treatment (285 days) and all tubers were only harvested at the final harvest 285 days after planting. Dry matter and crude protein foliage yields increased in all treatments compared to the control. Mean foliage dry matter (DM) and crude protein (CP) yields were 4.57, 3.53, 2.49, and 0.64 tonnes DM $ha^{-1}$ and 939, 684, 495 and 123 kg CP $ha^{-1}$ with 45, 60, 90 and 285 day cutting intervals, respectively. At harvesting heights of 10, 30 and 50 cm the DM yields were 4.27, 3.67 and 2.65 tonnes $ha^{-1}$ and the CP yields were 810, 745 and 564 kg $ha^{-1}$, respectively. The leaf DM proportion was high, ranging from 47 to 65%. The proportion of leaf and petiole increased and the stem decreased with increasing harvesting heights and decreasing cutting intervals. Crude protein content in cassava foliage ranged from 17.7 to 22.6% and was affected by harvesting height and cutting interval. The ADF and NDF contents of foliage varied between 22.6 and 30.2%, and 34.2 and 41.2% of DM, respectively. The fresh tuber yield in the control treatment was 34.5 tonnes $ha^{-1}$. Cutting interval and harvesting height had significant negative effects on tuber yield. The most extreme effect was for the frequent foliage harvesting at 10 cm harvesting height, which reduced the tuber yield by 72%, while the 90 day cutting intervals and 50 cm harvesting height only reduced the yield by 7%. The mean fresh tuber yield decreased by 56, 45 and 27% in total when the foliage was harvested at 45, 60 and 90 day cutting intervals, respectively. It is concluded that the clear effects on quantity and quality of foliage and the effect on tuber yield allow alternative foliage harvesting principles depending on the need of fodder for animals, value of tubers and harvesting cost. An initial foliage harvest 105 days after planting and later harvests with 90 days intervals at 50 cm harvesting height increased the foliage DM and CP yield threefold, but showed only marginal negative effect on tuber yield.

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