• 항공우주의학회지
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• 제30권1호
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• pp.34-39
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• 2020

The medical fitness of pilots is part of the civil aviation safety scenery. This study aimed to analyze the health problems occurring among Korean commercial pilots. Three data sources were used to identify the health problems: 7,574 aviation medical examination data, 5,400 sick leaves and 39 cases of a decrease in medical fitness during flight duty period and layover of Korean commercial pilots who have been working for K airline from Jan. 1, 2016 to Dec. 31, 2018. This study was retrospectively analyzed using SPSS 22 statistical program. Waiver of medical certificates was an average 11.9% of total issuance for 3 years, with a denial of 0.1%. The leading cause of denial of medical certificates was predominantly of cardiovascular cause (55.6%). Mild respiratory and digestive disease accounted for 82% of total sick prevalence and 68% of total sick days. The psychiatric and cardiovascular disease were ranked high according to the number of days lost per case. The most common cause of decrease in medical fitness during flight duty period was acute abdominal pain (36.4%) and musculoskeletal disorder (40%) when staying abroad. Aeromedical emphasis on minimizing cardiovascular risk remains appropriate. Major pilot health problems identified in this study should be considered in establishing pilot health promotion programs for aviation safety.

• Fisheries and Aquatic Sciences
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• 제27권1호
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• pp.35-47
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• 2024

The aim of this study was to analyze the income and productivity of seaweed farmers based on farmed land ownership status. This research was conducted in three provinces on the Sulawesi Island which are ranked among the 10 largest seaweed producers in Indonesia: Central Sulawesi, South Sulawesi and Southeast Sulawesi. The twelve study sites were determined based on 5 special criteria and 792 respondents fulfilled the criteria for seaweed farmers. Data were collected through field surveys and analyzed using qualitative and quantitative methods. Results showed that the seaweed farming areas are considered as private property with 4 types of marine land tenure or ownership status: own land, inherited land, leasehold land and purchased land. The productivity of seaweed farming land had a positive value greater than 1 in South Sulawesi and Southeast Sulawesi, and a positive value of less than 1 in Central Sulawesi. Seaweed cultivation in Central Sulawesi has not been managed effectively. At all sites, the maximum number of growing season cycles was 5 cycles/year. Optimal growing season conditions gave the highest marginal returns at 2-3 cycles/year with additional costs exceeding additional income for more than 3 cycles/year.

• 한국운동역학회지
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• 제14권1호
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• pp.27-40
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• 2004

The purpose of this study was to provide basic data for improving athletic performances by analyzing the kinematic variables of the Double Backward Somersault on the Parallel Bars through the 3D motion analysis. The subjects in this study were 5 male gymnasts who were ranked as national athletes. The results are as follows. 1. A total time(Mean Time) of performance showed $2.72{\pm}0.82\;sec$. and flight time to landing after releasing was 0.87sec.(mean). In order to perform better stable flying movement, the flight time should be increased. 2. In the change of velocity of the center of mass, when the increasing ascension velocity of the upper point was high, the position in the top point was high on releasing. 3. In the position variable of the center of mass, the mean of upper-bottom position in horizontal posture was $242.1{\pm}6.5cm$, $232.8{\pm}6.4cm$ in releasing, and $265.0{\pm}5.6cm$ in the highest point. This result is explained that the position of center of mass can be raised by using elastic power when wrist raised the bar in the releasing movement. 4. The angle of shoulder joint was $271.1{\pm}14.0$. Such a big angle influences a negative effect on the releasing velocity, because trunk is not a position in the enough vertical direction. 5. The ankle of hip joint in hand-standing was $191.1{\pm}5.9$, $118.8{\pm}5.3$ in releasing, and $122.3{\pm}5.3$ in taking on. Therefore, the result suggests that trunk should be straightly raised in taking on.

• Clinical and Experimental Reproductive Medicine
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• 제2권2호
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• pp.13-26
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• 1975

Seven aspects of attitude toward marriage in Korea are examined to better understand present and future marriage patterns. Also, various facets of current marriage practice are compared with attitudes. The study comprises three groups of roughly 600 women each, selected by random sampling from a rural, an urban, and a semi-urban area. A carefully designed and pretested questionnaire was checked for reliability by a reinterview in a 15% subsample. The great majority of Korean women support traditional attitudes that one must or should marry. The small group who recommend that one should not marry are mostly the very young or the never married, whose attitudes still may change. However, there are important and probably predictive shifts in favor of more individual decision, especially among the better educated, the young, and the more urban. Traditional reasons for marriage such as "custom" and procreation are ranked first by a majority, but there is a large shift to more contemporary or liberal desire for companionship and love, also primarily among the better educated, the urban, the young, and the never married. The traditional attitude that parents should have the sole or major role in mate selection is still held by a bare majority; the educated, urban, young, and never married are more liberal. Only 6% opt for each of the two extremes: That the parent alone or the respondent alone should decide. The remainder prefer one of the two middle-of-the-road positions where parent and child together decide. The proportions of respondents who classed specified criteria as moat important for selecting a husband, arranging the criteria in order from traditional to contemporary were: Lineage, etc., 23%; personal attributes, 40%; health and education, 27%; and love, 10%. The changing attitudes are suggested by the fact that love was ranked first by only 3% of the poorly educated rural poulation versus 23% of urban college level and 31% of the urban never married. There has been a substantial rise in the ideal age of marriage over the past twelve or more years, but there also is evidence that the ideal age is at or near a ceiling. Knowledge about legal age of marriage is minimal; the implications of this for proposed legislation are discussed. Three-fifthes to four-fifths of all respondents married husbands of the same religious, residential, and economic backgrounds as themselves. Almost all of them married men of the same or higher educational level. These evidences of traditional influences in mate selection are contrasted with the low priority given some of those items in earlier questions on reasons for marriage and criterion for selecting husband. Contrary to the expressed attitudes as to who should select the husband, we find that marriages of the study sample were stated to be arranged by parents alone in 62%; and in another 23%, the parents made the decision but asked the respondent's views. Such arrangements were most frequent among the rural, the less educated, and the older respondents and less common in the urban and more educated. The implications of these and related findings are discussed.

• 한국컴퓨터정보학회논문지
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• 제28권3호
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• pp.197-208
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• 2023

본 연구의 목적은 메타버스와 디지털 교육, 그리고 미래교육과 관련된 전문가들의 의견을 바탕으로 델파이 조사 방법론과 심층 인터뷰 방법론을 적용하여 메타버스와 메타버스 리터러시의 정의를 도출하고 메타버스 리터러시의 구성 요소를 정립, 제시하기 위함이다. 1차 델파이 조사에 참여한 전문가는 9명이며, 자료수집은 2022년 1월 12일부터 1월 17일까지 전자우편으로 발송되고 회송되었다. 2차 심층 인터뷰에 참여한 전문가는 4명이며, 자료수집은 2022년 3월 1일에서 3월 19일까지 각 전문가와 zoom을 통해 4회의 1:1 인터뷰로 진행되었다. 1차 델파이 조사에서 메타버스의 개념 정의를 위한 기초의견을 수렴하기 위해 기존에 정의된 6명의 국내 학자들의 개념 정의를 선별하여 그에 대한 동의 정도를 5점 리커트 척도로 평가하는 방식으로 조사하였고 추가 의견을 설문하였다. 메타버스 리터러시의 개념 정의를 위한 의견수렴을 위해 기존에 정의된 메타버스 리터러시의 정의에 대한 동의 정도와 추가 의견을 취합하였다. 메타버스 리터러시 구성 요소의 선정 및 프레임워크 개발을 위해 기존에 개발된 메타버스 리터러시 프레임워크를 제시하고 메타버스 리터러시를 구성하는 12개의 하위 개념 구성 요소들에 대한 동의 정도와 추가 의견을 수렴하였다. 델파이 조사 결과를 종합하여 메타버스와 메타버스 리터러시를 재정의하였고, 메타버스 리터러시의 개념 구성 요소를 포함한 프레임워크를 재정리하여 2차 전문가 심층 인터뷰를 실시하였다. 심층 인터뷰에서는 델파이 조사 결과로 재정립된 메타버스와 메타버스 리터러시에 대한 정의 및 메타버스 리터러시 프레임워크에 대한 심층 피드백을 수렴하였다. 1,2차 조사 결과를 토대로 최종 정의들과 프레임워크를 제안하였고, 마지막으로 연구의 함의와 한계점, 그리고 후속 연구의 제안을 제시하였다.

• Asian-Australasian Journal of Animal Sciences
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• 제31권8호
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• pp.1213-1220
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• 2018

Objective: An experiment was conducted to assess the antioxidant contents and activities of colored rice grains and to evaluate their nutritive characteristics in terms of chemical composition and in situ ruminal degradation. Methods: Ten cultivars of colored rice grains (Oryza sativa L.) collected from several areas of Japan were studied, and control rice without pigment, maize, barley, and wheat grains were used as control grains. Their chemical compositions, pigment, polyphenol contents, total antioxidant capacity (TAC), and degradation characteristics were determined. Results: The starch contents of the colored rice grains were in the range of 73.5% to 79.6%, similar to that of the control rice grain. The black and red rice grains contained anthocyanin (maximum: $5,045.6{\mu}g/g$) and proanthocyanidin (maximum: $3,060.6{\mu}g/g$) at high concentrations as their principal pigments, respectively. There were significantly (p<0.05) positive relationships among the pigment contents, polyphenol content, and TAC values in the colored and control rice grains, indicating that the increase in pigment contents also contributed to the increased polyphenol content and TAC values in the colored rice grains. The dry matter and starch degradation characteristics, as represented by c (fractional degradation rate of slowly degradable fraction) and by the effective degradability, of the colored rice grains and the control rice grain were ranked as follows among commonly used grains: wheat>barley${\geq}rice$>maize. The colored rice grains also included the most-digestible starch, since their potential degradable fraction and actual degradability at 48 h incubation were almost 100%. Conclusion: Colored rice grains have high potential to be used as antioxidant sources in addition to starch sources in ruminants.

• 근관절건강학회지
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• 제21권2호
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• pp.153-163
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• 2014

Purpose: This study was to analyze the job of coordinators working in the regional cardiocerebrovascular center. Methods: Using Developing a Curriculum (DACUM) method, the role of coordinators was defined and their duties and tasks were identified. The developed duties and tasks were classified and validated according to importance, difficulty, and frequency of the job. Results: A coordinator is defined as a clinical nurse specialist affiliated in a cardiocerebrovascular center. The coordinator is responsible for managing the major critical pathway to provide adequate medical service and providing education to the patient with myocardial infarction and cerebrovascular attack admitted via emergency room for prevention and management of disease. Ten duties and sixty-nine tasks were identified on the DACUM chart which represented the importance, difficulty, and frequency of tasks showed as A, B, C respectively. Based on determinant coefficient of the task, the highest ranked task was 'analysis for variation of CP' and the lowest was'investing the articles in stock'. Conclusion: The results of study showed that coordinators were doing various duties and tasks and they felt burden from their work and were in confusion. The results of this study can be used to develop training programs for coordinators and evaluation-scale of the coordinators' job performance as the basic data.

• Journal of Information Science Theory and Practice
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• 제9권1호
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• pp.24-34
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• 2021

The popularity of social networking sites (SNS) has facilitated communication between users. The usage of SNS helps users in their daily life in various ways such as sharing of opinions, keeping in touch with old friends, making new friends, and getting information. However, some users misuse SNS to belittle or hurt others using profanities, which is typical in cyberbullying incidents. Thus, in this study, we aim to identify profane words from the ASKfm corpus to analyze the profane word distribution across four different roles involved in cyberbullying based on lexicon dictionary. These four roles are: harasser, victim, bystander that assists the bully, and bystander that defends the victim. Evaluation in this study focused on occurrences of the profane word for each role from the corpus. The top 10 common words used in the corpus are also identified and represented in a graph. Results from the analysis show that these four roles used profane words in their conversation with different weightage and distribution, even though the profane words used are mostly similar. The harasser is the first ranked that used profane words in the conversation compared to other roles. The results can be further explored and considered as a potential feature in a cyberbullying detection model using a machine learning approach. Results in this work will contribute to formulate the suitable representation. It is also useful in modeling a cyberbullying detection model based on the identification of profane word distribution across different cyberbullying roles in social networks for future works.

• Genomics & Informatics
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• 제21권1호
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• pp.9.1-9.13
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• 2023

Matrix metalloproteinase-9 (MMP-9) is a zinc and calcium-dependent proteolytic enzyme involved in extracellular matrix degradation. Overexpression of MMP-9 has been confirmed in several disorders, including cancers, Alzheimer's disease, autoimmune diseases, cardiovascular diseases, and dental caries. Therefore, MMP-9 inhibition is recommended as a therapeutic strategy for combating various diseases. Cinnamic acid derivatives have shown therapeutic effects in different cancers, Alzheimer's disease, cardiovascular diseases, and dental caries. A computational drug discovery approach was performed to evaluate the binding affinity of selected cinnamic acid derivatives to the MMP-9 active site. The stability of docked poses for top-ranked compounds was also examined. Twelve herbal cinnamic acid derivatives were tested for possible MMP-9 inhibition using the AutoDock 4.0 tool. The stability of the docked poses for the most potent MMP-9 inhibitors was assessed by molecular dynamics (MD) in 10 nanosecond simulations. Interactions between the best MMP-9 inhibitors in this study and residues incorporated in the MMP-9 active site were studied before and after MD simulations. Cynarin, chlorogenic acid, and rosmarinic acid revealed a considerable binding affinity to the MMP-9 catalytic domain (ΔG_binding < -10 kcal/ mol). The inhibition constant value for cynarin and chlorogenic acid were calculated at the picomolar scale and assigned as the most potent MMP-9 inhibitor from the cinnamic acid derivatives. The root-mean-square deviations for cynarin and chlorogenic acid were below 2 Å in the 10 ns simulation. Cynarin, chlorogenic acid, and rosmarinic acid might be considered drug candidates for MMP-9 inhibition.

• Journal of Gastric Cancer
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• 제9권3호
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• pp.117-127
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• 2009

목적: 의료진은 암 환자들에게 적절한 건강 관련 정보를 제공함으로써 암 환자들이 자신의 질병과 치료에 대한 불확실한 상황을 극복하여 스스로 건강을 관리하는 것을 도울 수 있다. 효과적으로 정보를 제공하기 위해서는 환자가 실제 알고자 하는 정보 내용을 파악하는 것이 필요하다. 본 연구에서는 위암 수술 후 환자의 정보 요구 경향을 확인하고자 하였다. 대상 및 방법: 위암 수술 후 환자로, 2008년 11월 18일 삼성서울병원 위암센터에서 주관한 '위암 환자의 날' 행사에 참여한 대상자에게 설문지를 배부하여 직접 작성하도록 하였고, 수집된 190명의 설문지를 분석하였다. 설문 도구는 검사, 치료, 예후, 추후 관리, 성 생활, 위암 관련 정보 영역과 7개의 단일 문항의 총 37개 문항으로 구성되었다. 결과: 정보 요구는 예후, 치료 기간 동안 스스로 할 수 있는 건강 관리 방법, 추후 관리, 위암 관련 정보, 치료, 검사 등의 순으로 높게 나타났다. 문항별로 살펴보면, 예후, 식이, 치료 중의 건강 관리와 관련한 문항에서 높은 정보 요구를 보였다. 대상자의 연령이 젊을수록 검사, 치료, 성 생활, 위암 관련 정보 영역의 정보 요구가 높았다. 결론: 기존에 축적된 병원의 치료 결과 및 예후 자료에 근거한 객관적인 예후 관련 정보를 교육 프로그램에 반영하고 암 환자 및 보호자가 이해하기 쉽도록, 그리고 치료 과정에 적극적으로 참여할 수 있도록 적절한 정보를 전달하여야 할 것이다.