• Journal of Medicine and Life Science
• /
• 제20권3호
• /
• pp.107-114
• /
• 2023

Epidemiological control of coronavirus disease 2019 (COVID-19) is needed to estimate the infection period of confirmed cases and identify potential cases. The present study, targeting confirmed cases for which the time of COVID-19 symptom onset was disclosed, aimed to investigate the relationship between intervals (day) from symptom onset to testing the cycle threshold (CT) values of real-time reverse transcription-polymerase chain reaction. Of the COVID-19 confirmed cases, those for which the date of suspected symptom onset in the epidemiological investigation was specifically disclosed were included in this study. Interval was defined as the number of days from symptom onset (as disclosed by the patient) to specimen collection for testing. A locally weighted regression smoothing (LOWESS) curve was applied, with intervals as explanatory variables and CT values (CTR for RdRp gene and CTE for E gene) as outcome variables. After finding its non-linear relationship, a polynomial regression model was applied to estimate the 95% confidence interval values of CTR and CTE by interval. The application of LOWESS in 331 patients identified a U-shaped curve relationship between the CTR and CTE values according to the number of interval days, and both CTR and CTE satisfied the quadratic model for interval days. Active application of these results to epidemiological investigations would minimize the chance of failing to identify individuals who are in contact with COVID-19 confirmed cases, thereby reducing the potential transmission of the virus to local communities.

• 웰빙융합연구
• /
• 제6권4호
• /
• pp.33-39
• /
• 2023

Purpose: The purpose of this study is that the college age is an important transition period from youth to adulthood. Nursing students are unfamiliar with their field of study and need to adapt to a large amount of academic and practical training, so that they can have a better college life. An attempt was made to determine the effect of exam anxiety, academic stress, and alcohol dependence on the academic achievement of nursing students. Research design, data, and methodology: The subjects of the study were 130 students from all grades who agreed to participate in the study after expressing convenience among students attending the Department of Nursing at a university in Gyeongnam. The data collection period was from August 15 to September 15, 2023. It was about a month. The data investigation was conducted through a self-report survey. Results: Results showed that significant variables included exam anxiety, academic stress, alcohol dependency, parent relationships, peer relationships, and major satisfaction, explaining a total variance of 31.9%. Among these, the most influential factor was academic stress (β=-.352). Conclusions: This study identify factors influencing the academic achievement of nursing college students and hopes to contribute to formulating strategies for their growth and competence development.

• International Journal of Internet, Broadcasting and Communication
• /
• 제15권4호
• /
• pp.332-341
• /
• 2023

Notable trends in the restaurant start-up market after the lifting of social distancing include increasing interest in start-ups, emphasizing the importance of food quality and diversity, decreasing the relative importance of delivery services, and increasing interest in certain industries. The data collection period is three years from April 2021 to May 2023, including before and after social distancing, and texts extracted from blogs, news, cafes, web documents, and intellectuals provided by Naver, Daum, and Google were collected. For the collected data, the top 30 words were derived through a refining process. In addition, based on April 2021, the application period of social distancing, data from April 2021 to April 2022, and data from May 2022 to May 2023, Through these changes in trends, founders can capture new opportunities in the market and develop start-up strategies. In conclusion, this paper provides important insights for founders in accurately understanding the changes in food service start-up trends and in developing strategies appropriate to the current market situation.

• International journal of advanced smart convergence
• /
• 제12권4호
• /
• pp.353-360
• /
• 2023

This paper explores notable shifts in the restaurant startup market following the lifting of social distancing measures. Key trends identified include an escalated interest in startups, a heightened focus on the quality and diversity of food, a relative decline in the importance of delivery services, and a growing interest in specific industry sectors. The study's data collection spanned three years, from April 2021 to May 2023, encompassing the period before and after social distancing. Data were sourced from a range of online platforms, including blogs, news sites, cafes, web documents, and intellectual forums, provided by Naver, Daum, and Google. From this collected data, the top 50 words were identified through a refinement process. The analysis was structured around the social distancing application period, comparing data from April 2021 to April 2022 with data from May 2022 to May 2023. These observed trend changes provide founders with valuable insights to seize new market opportunities and formulate effective startup strategies. In summary, We offer crucial insights for founders, enabling them to comprehend the evolving dynamics in food service startups and to adapt their strategies to the current market environment.

• 한국도서관정보학회지
• /
• 제44권1호
• /
• pp.227-259
• /
• 2013

이 연구는 삼국이 통일을 이룬 7세기까지 중국에서 수입한 서적과 내국인이 편찬하여 유통된 서적을 대상으로 그 전모를 조사하여 주요한 특징을 밝힌 글이다. 삼국은 5세기부터 중국으로부터 서적을 수입하여 고대국가의 정착을 위해 법령의 제정, 교육제도의 도입, 학문의 진흥, 국제 외교, 국사의 편찬 등에 반영하였다. 그리고 4세기 후반 한반도에 전래한 불교는 초기에는 단순히 불경을 전수하는데 불과하였으나, 대장경이 도입된 7세기 이후에는 새로운 종파를 형성할 수준으로 교학이 발전하여 우리 자체의 장소문헌의 찬술이 본격으로 등장하고 있다는 사실에 주목하였다. 이처럼 삼국이 통일된 7세기까지 서적의 유통 현상을 분석한 결과, 전래 서적은 주로 유교와 불교 문헌에 집중된 현상을 보이고, 내국인에 의한 자체적으로 편찬한 서적은 삼국의 역사서와 불교의 장소문헌에서 높게 나타나고 있으며, 그 외에도 기초학습에 필요한 소학서와 과학분야의 전문서적이 수입되었던 것으로 파악되었다. 당시 삼국에서 유통된 서적의 경우 대부분 6세기부터 본격적으로 수입되었기 때문에 대부분 필사본 형태로 보급되었을 것으로 생각된다. 그러나 삼국에서 5세기 이전에 편찬되었던 "유기(留記)"와 "서기(書記)" 등 역사서적은 죽간으로 제작되었을 가능성이 높은 것으로 보았다.

• Asian-Australasian Journal of Animal Sciences
• /
• 제17권7호
• /
• pp.924-929
• /
• 2004

The objective of this study were to investigate the effect of ejaculation frequency on semen characteristics and to establish a method for quick assessment of sperm concentration in TCC using packed cell volume (PCV) as the parameter (Trial 1). Eighty senior roosters, averaging 61 wk-old, were used and the sperm concentrations were determined using a hemacytometer. The PCV value was measured in a capillary (0.75 mm in inner diameter) by centrifugation. A simple linear regression analysis suggested that the sperm concentrations were significantly correlated with PCV values (r=0.62, p<0.001). Trial 2 was conducted to determine the optimal ejaculation frequency of TCC roosters in a weekly semen collection program. The male birds were subjected to 1, 2, 3 or 6 ejaculations per week for four consecutive weeks and semen characteristics including ejaculation volume (EV, mL), sperm motility (%), PCV (%), sperm concentration (ESC, $\times$10$^{9}$/mL), weekly sperm production (WSP, $\times$10$^{9}$/wk) and average motile sperm numbers (AMSN, $\times$10$^{9}$/ejac) were determined. Average EV was greater in the group with 3 ejac/wk than with only 1 ejac/wk in weeks 1 and 3 of the collection period. WSP increased with ejaculation frequency during the first 3 weeks of collection (p<0.05). Sperm motility was better in the birds with 6 ejac/wk than in single ejaculation group for the first 2 wk and no significant differences were found for the last 2 wk of study. In contrast, the PCV value showed a trend of reduction for the first 2 wks in the 6 ejac/wk group. Surprisingly, no significant differences were detected in the AMSN among treatment groups. The weekly motile sperm production (WMSP) increased with ejaculation frequency. Based on our observation, PCV values could be used for a quick estimation of sperm concentration and an intensive semen collection program enhanced weekly sperm production in TCC roosters.

• 미술자료
• /
• 제101권
• /
• pp.66-86
• /
• 2022

본고에서 소개할 자료는 1970년 청와대 비서실에서 작성된 「고이박사 재산처리」의 첨부문서인 「이박사(李博士) 재산태장(財産台帳)」이다. 이 자료는 1970년 2월 청와대에서 소장하고 있던 집기와 미술품을 이승만 전대통령의 유족에게 인계하면서 작성된 목록으로 총 311점이 기술되어 있다. 이 자료가 작성된 경위는 다음과 같다. 1960년 4·19이후 이화장에 소장되어 있던 미술품을 포함한 동산은 이후 조사가 진행되었고 한때 국립박물관으로 이관을 검토하였으나 일괄하여 청와대에서 활용하는 것으로 결정하였다. 그러나 1963년 이를 다시 국립박물관으로 이관하라는 지시가 내려지자 이 중 사유물로 분류된 것은 이화장으로 반환한다. 1970년에는 청와대에서 소장하고 있던 집기·미술품에 대해서도 이화장으로 반환이 이루어지게 되었고 이 「이박사(李博士) 재산태장(財産台帳)」은 당시 작성된 목록이다. 본 대장에는 조선시대부터 당대를 아우르는 작가의 작품이 망라되어 있으나 사진이 첨부되어 있지 않고 기술사항도 소략하여 개개작품을 식별하기는 어렵다. 그러나 1960년 전후 경무대·이화장 소장 미술품의 규모를 일정부분 확인할 수 있다는 측면에서, 또 이들 미술품의 소유권 귀속을 둘러싼 시비와 그 전개과정을 살펴볼 수 있다는 측면에서 가치가 있다.

• Journal of Platform Technology
• /
• 제12권1호
• /
• pp.55-66
• /
• 2024

K-POP 시장은 문화를 넘어 외교, 환경 운동 등 사회 전반에 미치는 영향력이 지대해지고 있다. 이에 따라 아이돌의 성공 요인을 알아내고자 음원, 음반 등 전통적 데이터를 활용하여 머신러닝 기반으로 다양한 논문들이 수행되고 있다. 하지만, 기존의 선행 연구는 최근 아이돌의 인지도에 미치는 인스타그램 릴스, 유튜브 쇼츠, 틱톡, 트위터 등과 같은 뉴미디어 플랫폼의 영향을 반영하지 못했다는 한계점이 있다. 따라서 기존의 연구로는 매일 변화하는 미디어 트렌드를 고려하지 못하여 최근 아이돌 성공 요인의 인과관계를 뚜렷하게 밝히는데 어려움이 있었다. 이러한 문제점을 해결하기 위해, 본 논문은 아이돌 관련 데이터의 수집 시스템과 분석 방법론을 제안한다. 아이돌 데이터의 특이성을 반영한 컨테이너 기반 실시간 데이터 수집 자동화 시스템을 개발해, 아이돌 데이터 수집의 안정성과 확장성을 확보하고 K-Means 클러스터링 기반 이상치 탐지 모델을 통해 성공 아이돌 군집을 비교, 분석한다. 그 결과, 성별, 앨범 발매 시기 후 성공 시점, 뉴미디어와의 연관성 등 성공 아이돌들의 공통점을 파악할 수 있었다. 이를 통해, 최종적으로 각 아이돌별, 앨범 형태별, 컴백 시기에 따른 최적 컴백 프로모션을 기획해 아이돌의 성공 가능성을 증진할 수 있을 것으로 기대한다.

• 한국도서관정보학회지
• /
• 제20권
• /
• pp.351-381
• /
• 1993

The purpose of this study is to analyze the various processes and patterns to build or synthesize class numbers in the 800 class of the Dewey Decimal Classification, Edition 20(1989). The results of the analysis are as follows: 1. The 800(Literature and rhetoric) class in the DDC system is the main class added analytico-synthetic principle positively to an enumerative scheme. 2. The facets to be a n.0, pplied in literature are language literary form literary period ; kind, scope, or medium ; notation 08(collection) or 09(criticism) literary feature, subject, author, etc. 3. In the 800 class, there are the five tables of precedence for literary forms aspects ; specific kinds of persons ; literary, period in relation to the aspects for works treating more than one literary form subforms, aspects and literary periods in the works treating a specific literary form. 4. The basic number synthesis of literary works proceeds through the various facets in the following sequence, as far as necessary for the item : base no. + literary form + literary time or period + kind, scope, or medium + notation 08 or 09 + subform + additional notation from T3C and other tables. 5. In view of the multiplicity of facets, their synthesis formulas take the following order : (1) Works about the literature : base no.(schedule) + language(T6) or form(T3B) (2) Works by or about individual author : base no.(schedule) + form (T3A) + period(schedule) + subform(T3A) (3) Works by or about more than one author, not restricted by language facet : base no.(schedule) + period(T1) ; base no.(schedule) + kind, scope, medium(T3B), or feature(T3C), or person(T5). (4) Works by or about more than one author, restricted by language facet : base no.(schedule) + form (T3B) + period(schedule) + subform(T3B) + notation 08 or 09(T3B) ; base no.(schedule) + notation 08 or 09(T3B) + 9(T3C) + area notation(T2) : base no.(schedule) + form (T3B) + notation 008 or 009(T3B) : base no.(schedule) + form (T3B) + kind, scope, medium(T3B) + notation 08 or 09(T3B) + period(schedule). (5) Affiliated literatures for which period numbers are not us base no.(schedule) + form (T3A or T3B), or notation 08 or 09(T3B) : base no.(schedule) + kind, scope, medium(T3B), feature(T3C), or person(T5) 6. The problems in the number building of the 800 class are the complexity and difficulty of number synthesis, the intrinsic weakness of from distinction and the inconvenience of retrieval inherent in the form class. In order to solve these problems, therefore, the citation orders and methods of DDC should be improved and synthesis patterns simplified from the point of view of its applicability and its usefulness in the "literature class".

• Asian-Australasian Journal of Animal Sciences
• /
• 제19권6호
• /
• pp.811-815
• /
• 2006

The objective of this study was to evaluate the effect of electric fan installation for milk production improvement of dairy cattle in Thailand. The study was conducted using 2 small-holder dairy farms in Chiang Mai province, during April to August 2004. Electric fans were installed in front of each row of cows. Each of the two rows of cows in the barn was defined as an experimental unit, thus each farm had two experimental units. The fans were operated alternately in 7-day intervals between rows of cows within each farm during the day or between 8.00 am to 8.00 pm. Non-operation periods were used as control. Milk yields were recorded. Data on environmental temperature and humidity were obtained from Chiang Mai Meteorological Center. Result from statistically analysis of milk record suggested an interaction between lactation period and fan installation. Therefore, this interaction term of lactation period and fan installation (PERIOD_FAN) was added as a variable to the regression model. Due to the repeated data collection of milk yield from the same cow (alternate week), milk yield was analyzed by repeated measure analysis (Mixed model). Least square means were calculated for all levels and used to compare between each pair-wise values. The final data were collected from the total of 18 cows with 2,072 data. Overall means and SEM of milk yields and days in milk separated into farm were $14.7{\pm}0.06kg/day$ and $176.3{\pm}2.2days$, and $15.2{\pm}0.22kg/day$ and $202.5{\pm}3.7$ days for farm A and farm B, respectively. For multivariable analysis, only PERIOD_FAN and humidity were significantly associated with milk yield. Only the first period of lactation showed that the amount of milk yields during fan installation was higher than that of non-fan installation (p<0.05). Cows with fan installation produced approximately 1.2 kg/cow more milk than cows without fan installation during this period. In conclusion, the use of electric fan operated during the day time increased milk production of cows during the first period of lactation.