• School Mathematics
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• v.19 no.2
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• pp.319-343
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• 2017

In this study, we hope to reveal specialized content knowledge(SCK) and its features necessary to analyze student's errors and difficulties about the concept of irrational numbers. The instruments and interview were administered to 3 in-service mathematics teachers with various education background and teaching experiments. The results of this study are as follows. First, specialized content knowledge(SCK) were characterized by the fixation to symbolic representation like roots when they analyzed the concentration and overlooking of the representations of irrational numbers. Secondly, we observed the centralization tendency on symbolic representation and the little attention to other representations as the standard of judgment about irrational numbers. Thirdly, In-service teachers were influenced by content of students' error when they analyzed the error and difficulties of students. Lately, we confirmed that the content knowledge about the viewpoint of procept and actual infinity of irrational numbers are most important during the analyzing process.

• Horticultural Science & Technology
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• v.33 no.6
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• pp.923-931
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• 2015

This study was conducted to investigate petal pigmentation and the expression patterns of anthocyanin-related genes in bicolored roses 'Pinky Girl' treated with temporal heat stress (THS). Cyanin accumulation in petals was correlated with floral bud development and started rapidly as floral buds began to open, defined as the $4^{th}$ stage of floral bud development ($S_4$). This stage seems to be most susceptible to petal pigmentation. The total of cyanin pigmentation at blooming was significantly decreased (by 45.5%) with exposure to THS ($39/18^{\circ}C$ for three days at $S_4$) in comparison with control. Meanwhile, the expression of anthocyanin-related genes such as CHS, CHI, F3'H, DFR, ANS, 3GT, and 5GT was relatively promoted by THS. Only F3H was less expressed (by 26.7%) with THS treatment; thus, F3H could be a key gene for bicolor promotion in 'Pinky Girl' among anthocyanin-related genes. Overall, the expression pattern of the most anthocyanin-related genes did not match the trends of cyanin pigmentation in petals. These results suggest that floral pigmentation could be associated with other mechanisms related to anthocyanin biosynthesis such as post-translational effects and regulatory genes.

• Journal of KIISE:Software and Applications
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• v.37 no.1
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• pp.60-73
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• 2010

This paper aims to describe KorLexClas 1.5 which provides us with a very large list of Korean numeral classifiers, and with the co-occurring noun categories that select each numeral classifier. Differently from KorLex of other POS, of which the structure depends largely on their reference model (Princeton WordNet), KorLexClas 1.0 and its extended version 1.5 adopt a direct building method. They demand a considerable time and expert knowledge to establish the hierarchies of numeral classifiers and the relationships between lexical items. For the efficiency of construction as well as the reliability of KorLexClas 1.5, we use following processes: (1) to use various language resources while their cross-checking for the selection of classifier candidates; (2) to extend the list of numeral classifiers by using a shallow parsing techniques; (3) to set up the hierarchies of the numeral classifiers based on the previous linguistic studies; and (4) to determine LUB(Least Upper Bound) of the numeral classifiers in KorLexNoun 1.5. The last process provides the open list of the co-occurring nouns for KorLexClas 1.5 with the extensibility. KorLexClas 1.5 is expected to be used in a variety of NLP applications, including MT.

• Journal of the Korean Society for Library and Information Science
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• v.50 no.3
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• pp.309-327
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• 2016

Scholarly monographs have been a main vehicle for knowledge representation and transfer as well as an important research outcome. University presses have long been considered as the last bastion for scholarly monographs that have low commercial prospect. Until now there has not been a systematic data analysis regarding scholarly monograph production by university presses in Korea. In this paper, we collected bibliographic records of university presses' monograph publications between 1950 and 2015 using the National Library of Korea's online catalog system. A total of 21,015 records were used in the analysis. In particular, for monographs published between 2001 and 2015, we categorized them into scholarly monographs and non-scholarly monographs. University presses' publishing showed sharp increase during the 1990's but is in decline after its peak in 2005. University presses seem to have engaged in publishing more non-scholarly monographs than scholarly monographs by a ratio of 6:4. Large university presses in size seem to produce higher proportions of scholarly monographs than smaller presses. In terms of authoring types, single authorship accounts for the highest proportion and on the increase. However, edited books are losing ground as translated books seem to hold steady. Monographs in social sciences have been published more frequently than any other subject areas as there seem to be significant discrepancies among subject areas in terms of the scholarly monograph proportion.

• Journal of Korean Public Health Nursing
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• v.10 no.1
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• pp.58-79
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• 1996

재미 한인들의 급격한 증가와 더불어 미국 간호학의 한인들에 대한 문화적 지식의 유입을 필요로 하게 하였다. 더구나 기존 연구들은 한인들이 질병을 비효율적이며 부적절하게 관리하는 것으로 보고하고 있어 이에 대한 연구의 필요성이 더욱 증가하였다. 기존 연구에 의하면 초기 이민 경험은 이민자들의 건강과 질병 관리에 크게 영향을 미치는 것으로 나타났다. 이 연구에서는 비평적 문헌 고찰을 통하여 초기 이민 경험이 재미 한인들의 질병관리에 어떻게 영향을 미치는지에 관하여 살펴보고 이에 근거하여 재미 한인들을 위한 적절한 간호의 방향을 제시하고자 했다. 의학도서 목록 전산망과 기타 문헌 자료를 이용하여 1966년부터 1995년까지의 의학, 보건학, 생물학, 심리학, 사회학 문헌들을 살펴보았다. 체계적인 문헌 고찰을 위하여 4개의 세부적인 주제 아래 문헌들을 구분하여 고찰하였다 첫째. 일반적인 이민자들의 초기 이민경험, 건강, 질병 관리가 고찰되었고. 둘째로 재미 한인들의 초기 이민 경험이 고찰되어졌으며, 셋째로, 재미 한인들의 건강. 질병관리가 고찰되어졌고, 마지막으로 이들을 위한 간호의 방향을 제시해 줄 기존의 간호 모델들이 고찰되어졌다. 문헌 고찰 결과, 재미 한인들의 부적절한 질병 관리는 그들의 초기 이민 경험들과 관련되는 것으로 나타났다 첫째 문화적으로 결정되어진 신념이나 태도들이 재미 한인들의 적절한 질병 관리를 방해하는 것으로 나타났다. 둘째, 재미 한인들도 본국인들과 마찬가지로 질병관리를 위해 현대의학. 한방, 무속, 민간요법을 사용하는 것으로 나타났는데. 한방의 사용이나 이러한 치료법들의 흔용은 한인들의 적절한 질병 관리를 방해하는 것으로 나타났다. 셋째, 문화적 차이, 언어장벽, 그리고 비언어적 의사소통의 차이점에서 오는 오해들이 재미 한인들의 질병 관리를 부적절하게 만드는 것으로 나타났다. 넷째, 이민생활에서 오는 여러 어려움들 또한 재미 한인들의 질병관리를 어렵게 만드는 것으로 나타났으며, 다섯째. 사회적 지지의 부족 역시 재미 한인들의 적절한 질병관리를 힘들게 하는 것으로 나타났다. 마지막으로 적절한 간호 모델의 부재가 이들을 위한 적절한 간호의 제공을 어렵게 하고 있는 것으로 밝혀졌다. 이러한 결과에 근거를 두고 초기 이민 적응기에 있는 재미 한인들에게 적절한 간호를 제공하기 위한 몇 가지 제안들이 제시되었다. 첫째, 이민자들에게 적절한 간호가 제공되기 위해서도 문화적 배경을 고려해야 하겠다. 문화적으로 적절한 간호를 위해서 간호 제공자들은 자신들의 문화와 다른 간호 대상자의 문화도 존중해 주어야 하며, 문화적으로 결정되어진 건강 신념들과 질병 관리 행태도 생명을 위협하지 않는 한 존중해 주어야 할 것이다. 또한 간호제공자들은 자문화 중심적인 사고방식에서 벗어나야 하며, 간호 대상자들의 상황을 총괄적으로 이해하여야 하고 이민자들의 어려움에 대해 공감을 가지고 간호를 제공하여야 하겠다. 둘째, 간호 제공자들은 한방에 관한 지식을 가지고 한 의학 혼용으로 인한 위험으로부터 간호 대상자를 보호하여야 할 것이다. 셋째, 문화적 차이나 자민족 중심적 사고방식으로 인한 오해를 막기 위하여 간호 제공자들은 간호 대상자와 자주 상호 교류함으로써 배우는 자세로 간호 대상자를 대하여야 할 것이며, 자신의 자민족 중심적인 사고방식을 인지하고 언어적, 비언어적 의사소통의 문화 집단별 차이를 앎으로써 오해의 소지를 줄여야 할 것이다. 넷째, 적절한 간호의 제공을 위하여 의사소통을 위해 대화만을 직접 번역해 주는 통역자와는 달리 문화적 배경까지도 이해하고 해석해 주는 문화적 통역자의 도움을 밟아야 할 것이다. 다섯째, 한국문화는 가족 중심적 문화이므로 간호 대상자의 혈연관계를 이해하고 그에게 크게 영향을 주는 가족원을 간호 중재에 참여시킴으로써 치료 효과를 높여야 할 것이다. 마지막으로 효과적인 간호를 위하여 재미 한인을 위한 적절한 간호 모델을 개발함으로써 체계적인 간호의 방향을 제시할 수 있어야 할 것이다.

• Journal of the Korean Data and Information Science Society
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• v.25 no.2
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• pp.337-347
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• 2014

There is no known publication about assessment of quality of life (QOL) in Korean HIV patients. We aimed to assess the QOL of HIV patients. We developed Korean version of the WHOQOL-HIV BREF (short forms of WHOQOL-HIV, 31 questions with 6 domains). Survey data from 220 HIV-positive adults were obtained in 14 centers in South Korea. Male were dominant (202/220, 91.8%). Mean age was $40.6{\pm}12.1$. Mean CD4+ T-cell count was $414.9{\pm}226.6/ml$. Overall of WHOQOL-HIV BREF were $53.2{\pm}14.9$ (perfect score=100) (Cronbach's ${\alpha}$ = 0.942). It is similar score comparing to another country (Portugal: 54.75/100, measured by WHOQOL-HIV). Correlations of WHOQOL-HIV BREF score with patients' subjective QOL and with subjective satisfaction were 0.747 (p <0.01) and 0.651 (p <0.01), respectively. WHOQOL-HIV BREF have internal reliability. There is in need of monitoring for QOL of HIV patients in the clinical practice and trials. This survey tool could be used to assess the effect of intervention. Additionally, comparison across countries would be possible and promising.

• Korean Journal of Cognitive Science
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• v.4 no.1
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• pp.213-242
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• 1993

During the past decades,several automatic indexing systems have been developed such as single term indexing.phrase indexing and thesaurus basedidndexing systems.Among these systems,single term indexing has been known as superior to others despte its simpicity of extracting meaningful terms.On the other hand,thesaurus based one has been conceived as producing low retrival rate ,mainly because thesauri do not usually have enough index terms.so that much of text data fail to be indexed if they do not match with any of index terms in thesauri.This paper develops a thesaurus based indexing system THINS that yields higher retrieval rate than other systems.by doing syntactic analysis of text data and matching them with index terms in thesauri partially.First,the system analyzes the input text syntactically by using the machine translation suystem MATES/EK and extracts noun phrases.After deleting stop words from noun phrases and stemming the remaining ones.it tries to index these with similar index terms in the thesaurus as much as possible. We conduct an experiment with CACM data set that measures the retrieval effectiveness with CACM data set that measures the retrieval effectuvenss of THINS with single term based one under HYKIS-a thesaurus based information retrieval system.It turns out that THINS yields about 10 percent higher precision than single term based one.while shows 8to9 percent lower recall.This retrieval rate shows that THINS improves much better than privious ones that only yields 25 or 30 percent lower precision than single term based one.We also argue that the relatively lower recall is cause by that CRCS-the thesaurus included in CACM datea set is very incomplete one,having only more than one thousand terms,thus THINS is expected to produce much higher rate if it is associated with currently available large thesaurus.

• Journal of Life Science
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• v.18 no.6
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• pp.804-813
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• 2008

Cordyceps militaris, the Chinese medicinal fungal genus Cordyceps, is reported to possess many pharmacological activities including immunological stimulating, anti-cancer, anti-virus and anti-infection activities. However, the molecular mechanisms of C. militaris on biochemical actions in cancer have not been clearly elucidated yet. In the present study, we investigated the anti-proliferative activity of the water extract of C. militaris (WECM) in human hepatocellular carcinoma HepG2 cells. It was found that WECM could inhibit the cell growth in a dose-dependent manner, which was associated with morphological changes and apoptotic cell death such as formation of apoptotic bodies and increased populations of apoptotic sub-G1 phase. Apoptotic cell death of HepG2 cells by WECM was connected with a up-regulation of pro-apoptotic Bax expression, tumor suppressor p53 and cyclin-dependent kinase inhibitor p21 (WAF1/CIP1). In addition, WECM treatment induced the proteolytic activation of caspase-3 and a concomitant degradation and/or inhibition of poly (ADP-ribose) polymerase (PARP), ${\beta}-catenin$ and phospholipase $(PLC)-{\gamma}1$ protein. Furthermore, caspase-3 inhibitor, z-DEVD-fmk, significantly inhibited WECM-induced apoptosis demonstrating the important role of caspase-3 in the observed cytotoxic effect. Taken together, these findings provide important new insights into the possible molecular mechanisms of the anti-cancer activity of C. militaris.

• Journal of Internet Computing and Services
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• v.16 no.1
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• pp.83-90
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• 2015

This paper examines the rising value of social networked journalism and analyzes the case of a social news site based on the theory of networked journalism. Social networked journalism allows the public to be involved in every aspect of journalism production through crowd-sourcing and interactivity. The networking effect with the public is driving journalism to transform into a more open, more networked and more responsive venue. "wikitree" is a social networking news service on which anybody can write news and disseminate it via Facebook and Twitter. It is operated as an open sourced program which incorporates "Google Translate" to automatically convert all its content, enabling any global citizen with an Internet access to contribute news production and share either their own creative contents or generated contents from other sources. Since its inception, "wikitree global" site has been expanding its coverage rapidly with access points arising from 160 countries. Analyzing its international coverage by country and by news category as well as by the unique visit numbers via SNS, the results of the case study imply that networking with the global public can enhance news traffic to the social news site as well as to specific news items. The results also suggest that the utilization of Twitter and Facebook in social networked journalism can break the boundary between local and global public by extending news-gathering ability while growing audience's interest in the site, and engender a feasible business model for a local online journalism.

• Journal of the Korea Society of Computer and Information
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• v.10 no.3 s.35
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• pp.297-306
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• 2005

Compendium of arithmetic, geometry, and proportions and proportionality' that was published in Venice in 1494 has been recognized as the first bookkeeping data in the world. Major characteristics of Pacioli's bookkeeping rules were reviewed in this study as follows: All the necessary particulars for double entry bookkeeping were provided in Pacioli's bookkeeping rules;. List of property was described at the time of start of business; Three major books were used; Details of daily transactions were considered to be important; Strike through was lined at each description in journal books, details of daily transactions, and list of property after entry of ledger; Amount columns were provided and Arabic numerals were used; Annual settlement custom was being initiated; Profit and loss account was prepared at year-end; Trial balance sheet was inevitably described; Books were verified prior to closing accounts; Control account was not established; Financial statements were not prepared and business analysis was made, too; Finished goods inventory was not adjusted; Mark was assigned to books; Inter-office account was prepared; Branch accounts and branch ledgers were prepared; There was entries of trust; Current arrangement was described; The principle 'Cost or market price, whichever is lower basis' was promoted: Petty cash system is explained Checks and bills of exchange are used in bank account. As mentioned, characteristics of Pacioli's bookkeeping rules were reviewed; the signs of necessity for preparation of profit and loss statement and balance sheet is found as well as preparation of trial balance sheet and the rules may be considered as a very excellent one in terms of the bookkeeping on initiating stage of double entry bookkeeping.