• 제목/요약/키워드: IT Professionals

검색결과 2,078건 처리시간 0.024초

구조물 진동.소음의 수치해석시 최적 요소크기는 .lambda./4이다. (Optimum mesh size of the numerical analysis for structural vibration and noise prediction)

  • 김정태;강준수
    • 대한기계학회논문집A
    • /
    • 제21권11호
    • /
    • pp.1950-1956
    • /
    • 1997
  • An engineering goal in vibration and noise professionals is to develope quiet machines at the preliminary design stage, and various numerical techniques such as FEM, SEA or BEM are one of the schemes toward the goal. In this paper, the research has been focused on the sensitivity effect of mesh sizes for FEM application so that the optimum size of the mesh that leads to engineering solution within acceptable computing time could be generated. In order to evaluate the mesh size effect, three important parameters have been examined : natural frequencies, number of modes and driving point mobility. First, several lower modes including the fundamental frequency of a 2-D plate structure have been calculated as mesh size changes. Since theoretical values of natural frequencies for a simple structure are known, the deviation between the numerical and theoretical values is obtained as a function of mesh size. The result shows that the error is no longer decreased if the mesh size becomes a quarter wavelength or smaller than that. Second, the mesh size effect is also investigated for the number of modes. For the frequency band up to 1.4 kHz, the structure should have 38 modes in total. As the mesh size reaches to the quarter wavelength, the total count in modes approaches to the same values. Third, a mobility function at the driving point is compared between SEA and FEM result. In SEA application, the mobility function is determined by the modal density and the mass of the structure. It is independent of excitation frequencies. When the mobility function is calculated from a wavelength to one-tenth of it, the mobility becomes constant if the mesh becomes a quarter wavelength or smaller. We can conclude that dynamic parameters, such as eigenvalues, mode count, and mobility function, can be correctly estimated, while saving the computing burden, if a quarter wavelength (.lambda./4) mesh is used. Therefore, (.lambda./4) mesh is recommended in structural vibration analysis.

부모의 구강건강지식이 유아의 구강건강에 미치는 영향 (Influence of parents' knowledge for oral hygiene on the oral health of their infants)

  • 서수연;이승훈;김동열
    • 한국치위생학회지
    • /
    • 제12권6호
    • /
    • pp.1101-1110
    • /
    • 2012
  • Objectives : The purpose of this study is to research and to analyze the relationship between oral health state of infants and oral health awareness of their parents. Methods : The study has been conducted for 196 infants ranging from the age 18 to 60 month and their parents who have visited three dental clinics in Gyeongju city. The questionnaire has been made to identify the parents' oral health knowledge and behavior, while the dentist has examined the dental care, toothbrushing, and malocclusion of infants. Results : According to the results, it has been found out that there is correlation between subject's health status and oral health status where the higher point of subject's health status lead to the point of oral health status accordingly. Also it has been additionally recognized that there is the relationship between the awareness of parents and the oral health status of their infants in the same way. Conclusions : The parents who have low oral health awareness are required by oral health professionals to be provided with information on infant oral health, in order to promote and to maintain healthy oral status of their infants. And the specific training on method how to care oral health is needed. In addition, the government should take the detailed measures by extending infant's medical benefits to draw their attention to the issue.

사회복지 공무원을 위한 사회복지가치 교육프로그램 개발 연구 (Study on Development of Educational Program for Social Welfare Officials' Social Welfare Values)

  • 진선미;김예슬
    • 한국콘텐츠학회논문지
    • /
    • 제17권10호
    • /
    • pp.9-18
    • /
    • 2017
  • 본 연구는 신규 사회복지 공무원과 배치전환 공무원의 복지가치 함양을 위한 교육프로그램 개발을 목적으로 진행되었다. 이를 위하여 현재 근무중인 사회복지 공무원의 복지마인드, 복지가치에 대한 인식 수준을 확인하고, 전문가 및 현업 공무원 인터뷰를 통하여 교육 필요점을 도출하였으며, 이를 바탕으로 복지가치 교육프로그램을 개발하였다. 연구결과 첫째, 교육 내용은 사회복지 가치의 세 가지 요소를 직접적으로 공유하고 현업에서의 실 사례 등을 함께 생각해보며 중요성을 인식할 수 있도록 설계하였다. 둘째, 교육 방법은 토론 및 발표를 통해 서로의 의견을 공유하고 피드백을 주는 활동으로 구성하였다. 본 연구 결과를 토대로 다음과 같은 시사점을 제시하였다. 사회복지 공무원이 기본적으로 가져야 할 복지가치가 내면화할 수 있는 교육프로그램을 신규 직부터 직급별에 맞춰 체계적으로 개발하여 교육할 필요가 있다.

클라우드 서비스 위험 제거를 위한 중소기업 직원의 포기옵션 선택에 관한 조직 차원의 조절 변수 연구 (Organizational-Level Moderators on the SME Employees' Adoption of Abandonment Option to Manage the Cloud Computing Service Risks)

  • 강소라;남승현;양희동
    • 한국산업정보학회논문지
    • /
    • 제22권1호
    • /
    • pp.105-116
    • /
    • 2017
  • 본 연구에서는 콜라우드 서비스의 높은 실패율에 대하여, 어떠한 위험이 존재하는지 살펴보고, 이러한 위험을 제거하기 위한 실물 옵션, 특히 포기 옵션의 채택에 영향을 끼칠 수 있는 위험의 종류에 대하여 실증 분석을 실시하였다. 특히 개인 차원에서 인식하는 위험의 정도가 포기 옵션의 채택에 어떠한 영향을 끼치는 지에 더하여, 조직 차원의 변수 (CEO의 혁신성, 밴드웨건 효과)가 개인 차원의 효과들을 어떻게 조절하는지에 대하여 실증 분석을 실시한다. 수도권 소재 중소기업의 IT 담당자들을 대상으로 설문조사한 내용을 바탕으로, 기술적 위험과 경제적 위험이 포기 옵션의 채택에 유의한 영향을 끼치며, CEO의 혁신성이 기술적 위험의 효과를 억제하는 조절 효과가 검증되었다. 그러나, 밴드웨건 효과는 개인 차원의 영향을 억제하는 조절 효과는 실증적으로 유의하지 않았다.

금형분야 국가기술자격체계 구축방안 (A Study on Building of National Technical Qualification Framework;Focusing on the Die & Mold Field)

  • 박준석;구자길;편영식
    • 한국산학기술학회:학술대회논문집
    • /
    • 한국산학기술학회 2007년도 춘계학술발표논문집
    • /
    • pp.315-318
    • /
    • 2007
  • 이 연구의 목적은 금형분야의 국가기술자격 운영현황을 검토하고, 금형분야 기능장, 기사, 산업기사, 기능사 자격의 새로운 발전방향을 제시하는데 있다. 금형분야 자격이 발전되기 위해서는 금형분야 자격에 대한 자격구조 분석을 실시하여 산업현장의 기술변화 내용을 수용할 수 있어야 한다. 따라서 이 연구에서는 금형분야 국가기술자격 종목을 대상으로 노동시장 수요에 맞는 역할 모형 설정 원칙을 기본으로 하여 자격의 구조를 분석하고, 자격에 대한 구체적인 신설${\cdot}$통합${\cdot}$폐지${\cdot}$출제기준 수정의 준거를 마련하여 산업현장전문가 표적집단면접조사(Focus Group Interview)를 통해 자격종목의 재정비 방안을 제시하였다.

  • PDF

사회복지과목 이수 대학생의 인권감수성에 대한 탐색적 연구 : 원격대학 성인학습자를 중심으로 (Human Rights Sensitivity of Undergraduates in Social Welfare Classes : Focused on Adult Learner in On-line University)

  • 박형원
    • 한국콘텐츠학회논문지
    • /
    • 제13권8호
    • /
    • pp.191-200
    • /
    • 2013
  • 본 연구는 사회복지과목 이수 대학생의 인권감수성 수준을 파악하고 인구사회학적 요인, 인권관련 교육경험에 따른 차이를 검증하고자 S사이버대학교에서 사회복지과목 수강중인 251명의 성인학습자를 대상으로 이루어졌다. 주요 연구변인의 현황을 파악하기 위하여 빈도분석, 분산분석을 실시하였다. 학생들의 인권감수성은 5점 척도 기준에서 2.70으로서 중간 정도수준이었으며, 이주노동자의 노동권과 장애아동의 교육권에 높은 인권감수성을 나타냈다. 전공유형, (사회복지)윤리과목 수강여부에 따라 인권감수성에 차이가 있었는데, 사회복지계열 전공 학생과 (사회복지)윤리과목 수강한 경험이 있는 학생의 인권감수성이 높았다. 또한 인권감수성 척도의 에피소드별로 인권감수성 수준에 차이가 있었다. 이러한 연구결과를 바탕으로 인권전문직인 사회복지사를 교육함에 있어 수업에서의 학생 권리 존중, 직간접적으로 인권갈등사례를 학습하면서 인권의식을 함양하는 교육방법의 필요성, 수업과정에서의 자기반성적 과정의 필요성, 학생들의 상황과 특성에 맞는 인권교육의 필요성을 제안하였다.

인문계 중.고등학교 재학생이 비타민.무기질 보충제 복용 행동 조사 (Behaviors of Vitamin Mineral Supplement Usage by Healthy Adolescents Attending General Middle or High Schools in Korea)

  • 한지혜
    • Journal of Nutrition and Health
    • /
    • 제33권3호
    • /
    • pp.332-342
    • /
    • 2000
  • Vitamin mineral supplement usage by self-prescription is popular behavior among adolescents. This study was conducted to investigate the behaviors of vitamin·mineral supplement usage and the relationship between demographic variables and supplement usage by healthy adolescents. Nine hundred seventy two boys and girls, aged 13-18 years, attending general middle or high schools were chosen from various cities and rural communities in Korea. As a result, vitamin·]mineral supplements were taken by 31.3% of subjects. Users tended to take vitamin·mineral supplements more frequently when they were healthy than when they suffered from disease. The taking period of supplements was different according to school type such as middle or high school(p<.05), sex(p<.001) and residence of subjects(p<.01). The main information source of supplements was newspaper/magazine/TV, and it was affected by sex(p<.05) and residence(p<.01). Vitamin·mineral supplements were generally recommended by their mothers instead of health professionals. The commonly cited taking reason of supplements was affected by sex(p<.01)and socioeconomic status of family(p<.05). The frequently responded effect obtained from supplement use was recovery from fatigue and it was different according to sex(p<.01). The major mentioned reason of not taking vitamin·mineral supplements by non-users was 'I eat a balanced diet'. The most frequently consumed supplements were vitamin C, followed by multi-vitamins supplements, and this pattern was different according to school type(p<.001), sex(p<.01) and residence(p<.05). These findings show that the behaviors of vitamin·mineral supplement usage by subjects are not resonable, and their supplement usage tends to be affected by demographic variables. Therefore, nutritional understanding and education that are intended to form the resonable behaviors toward vitamin·mineral supplement usage of adolescents should be provided with considering the relationship between demographic variables and supplement usage.

  • PDF

맥상용어목록을 이용한 맥상표현 자동추출방법 연구 -『의종손익』을 중심으로- (A Research on Automatic Data Extract Method of Pulse Descriptions Using the List of Pulse Terminology - Based on 『Euijongsonik』 -)

  • 금유정;이병욱;엄동명;송지청
    • 대한한의학원전학회지
    • /
    • 제33권4호
    • /
    • pp.21-32
    • /
    • 2020
  • Objectives : Pulse descriptions in Korean Medical texts are comprised of combinations of pulse terminology, where various combinations of pulse terminology are used to describe disease symptoms. For Korean Medical doctors and professionals, however, it is impossible to identify the entirety of pulse description combinations, and their understanding is mostly limited to those learned from classical texts studied individually. Methods :This research was carried out by using Access of Microsoft Office 365 in Windows 10 of Microsoft. Pulse descriptions were extracted from the text, 『Euijongsonik』. In the final stages, the automatically extracted list of pulse descriptions was refined through [excluded terminology of pulse description]. Results : The PC environment of this research was Intel Core i7-1065G7 CPU 1.30GHz, with 8GB of RAM and a Windows 10 64bit operation system. Out of 6,115 verses 6,497 descriptions were primarily extracted, and after a refinement process, the final list contained 5,507 pulse descriptions. Conclusions : Based on the assumption that classical texts are available in data form to be processed by programs, current research methodology demonstrated that it was more efficient in regards to time and man power to create a pulse description database compared to when the researcher manually created one.

The Experiences and Challenges of Caregivers of Frail or Chronically Ill Elderly: An Integrative Review

  • Han, Hae-Ra
    • Perspectives in Nursing Science
    • /
    • 제3권1호
    • /
    • pp.47-60
    • /
    • 2006
  • BACKGROUND: Social, legal, and economic factors have changed the delivery of care to elderly who are frail and/or chronically ill. Increasing number of the elderly are now treated in the community, while living with or in close proximity to their family. It is evident that families play a major role of support for elderly persons in our society. This paper provides a review and analysis of studies that have investigated informal caregiving issues encompassing physical, psychological, emotional, and social domains. RESULTS OF THE REVIEW: Family caregiving often interfered with workplace and other responsibilities, creating physical, emotional, and financial stress for caregivers. Relatively high volumes of research addressed caregiving issues in the families of Alzheimer patients and in the areas of emotional and psychological impact of caregiving. Few studies explicitly investigated the role of informal caregivers in the management of other chronic conditions such as stroke or depression or physical consequences of long-term caregiving. While most studies were focused on negative aspects of caregiving, a few studies found it rewarding. Often the burden, stress, and socio-economic effects on the family caregiving for an elderly person were not sufficiently appreciated. CONCLUSIONS: Positive outcomes for both the caregiver and the care recipient are more likely to occur when effective levels of collaboration exist between health professionals and caregivers. As a first step, a better understanding of the caregiving experience such as caregiver characteristics, care recipient characteristics, and social stigma is important for nurses to minimize the burden of care so that appropriate interventions can be developed. In addition, further studies are needed to examine the role and needs of informal caregivers in the care of increasing number of frail and/or chronic ill elderly treated in the community.

  • PDF

방사선(학)과 학생들의 전공만족도분석 (An Analysis on the Satisfaction of Radiology Students with their Major)

  • 김정훈;강세식;김창수
    • 대한방사선기술학회지:방사선기술과학
    • /
    • 제39권2호
    • /
    • pp.247-256
    • /
    • 2016
  • 방사선(학)과 학생들의 전공만족의 요인을 파악하고 효율적인 교육과 진로 교육 등의 기초자료를 제공하고자 본 연구를 수행하였다. 그 결과, 교수의 역할에 대한 만족도는 높았으나, 전반적으로 교과과정에 대한 수치는 낫게 나타났으며, 자기주도 학습의 인식도와 실천도의 사이의 차이가 높은 것으로 분석되었다. 또한 상관관계분석결과에서도 교수의 역할이 매우 중요한 요인으로 작용함을 알 수 있었다. 이에 본 연구를 토대로 교수의 역할(수업 및 국시준비지도, 학생들의 질문 등)을 중심으로 방사선(학)과 학생들의 전공만족을 향상시킨다면, 학과 및 학교 적응에 도움을 줄 수 있으며, 향후 전문직업인으로서의 긍정적인 인성이 형성될 것으로 사료된다.