• 한국융합학회논문지
• /
• 제9권11호
• /
• pp.519-527
• /
• 2018

본 연구의 목적은 간호교육에서 교수학습전략으로 스마트러닝을 적용한 후 간호대학생의 학습자 참여, 학업적 자기 효능감 및 과제가치에 미치는 효과를 확인하기 위함이며, 간호교육에 스마트러닝을 도입하기 위한 융합연구의 기초자료로 활용하고자 실시되었다. 본 연구는 비동등성 대조군 전후 시차설계 유사실험연구로 G시 소재 일 대학교의 간호학과 학생을 편의 표집하여 2018년 3월 2일부터 6월 8일까지 실험군 86명, 대조군 95명을 대상으로 실시하였다. 수집된 자료는 SPSS 18.0 program을 이용하여 ${\chi}^2$-test, t-test로 분석하였다. 스마트러닝을 적용한 실험군과 강의식 교육을 받은 대조군의 학습자 참여, 학업적 자기효능감, 과제가치를 비교한 결과 학습자 참여에서는 유의한 차이가 없었으나(t=1.065, p=.288), 학업적 자기 효능감(t=2.668, p=.008)과 과제가치(t=2.070, p=.040)에서 유의한 차이가 있었다. 따라서 스마트러닝은 간호대학생의 학업적 자기효능감과 과제가치에 효과가 있는 것으로 확인되었다. 간호교육에 스마트러닝이 교수학습전략으로 활용되기를 기대한다.

• 사물인터넷융복합논문지
• /
• 제6권3호
• /
• pp.39-44
• /
• 2020

본 논문은 SDN 기반 네트워크에서 fog computing 서비스의 이동성을 제안하고자 한다. Fog computing 아키텍처는 컴퓨팅 및 배터리 자원의 제약이 있는 IoT(Internet of Things) 기기들에게 테스크 오프로딩을 가능하게 함으로써 IoT의 저지연/고성능 서비스를 위한 방안으로 연구되고 있다. 하지만 fog computing 아키텍처에서는 고정된 IoT 기기 뿐만 아니라 이동하는 IoT 기기도 서비스 대상 단말로 고려되어야 하기 때문에 이러한 기기의 이동성을 고려한 오프로딩 방안이 필요하다. 특히 저지연 응답 시간을 요구하는 IoT 서비스의 경우, 오프로딩 이후 단말이 이동했을 때 새로운 fog computing 노드와의 새로운 통신 연결 및 테스크 오프로딩 과정을 다시 수행해야 하기 때문에 지연시간이 발생하여 사용자의 QoS(Quality of Service) 저하가 발생할 수 있다. 그러므로 본 연구에서는 단말의 이동성을 고려하여 테스크 또는 테스크의 결과를 이동 후의 fog computing 노드로 미리 migration 시키고 데이터 전송을 위한 rule 또한 미리 배치시킴으로써 통신 지연 및 서비스 복구 지연 시간을 줄일 수 있는 방안을 제시하고자 한다.

• 한국비블리아학회지
• /
• 제32권4호
• /
• pp.89-109
• /
• 2021

본 연구는 대학도서관 전자책 서비스 담당자의 업무 활동과 업무 수행의 어려운 점을 분석하여 서비스 업무 개선에 필요한 기초자료를 제시하고자 하였다. 이를 위해 학술정보통계시스템을 참고하여 전자책 보유 종수가 많은 대학의 전자책 서비스 담당자 9명을 대상으로 반구조화된 면담을 실시하였고, 수집한 자료는 활동이론을 적용하여 분석하였다. 연구 결과, 담당자들은 전자책 서비스 목표를 달성하기 위해 다양한 도구를 활용하고 있었으며, 교내외의 여러 구성원들과 소통하고 있었다. 또한 각 구성원들의 분업을 통해 서비스 업무가 지속되고 있었으며, 전자책 서비스 업무 활동과 관련한 교내 및 교외 수준의 규칙이 존재했다. 그러나 업무 활동 과정에서 예산 부족, 국내 전자책의 상이한 제작 방식과 이로 인한 이용의 불편함, 일부 구성원과의 의견 충돌 등의 갈등이 파악되었다. 나아가 담당자들이 언급한 전자책 서비스 개선방안을 콘텐츠 측면, 시스템 측면, 정책적 측면으로 구분하여 제시하였다.

• Journal of the Korean Academy of Child and Adolescent Psychiatry
• /
• 제27권1호
• /
• pp.72-81
• /
• 2016

Objectives: The purpose of this study was to evaluate anti-depressive effects of exercise on child and adolescent and its association with brain derived neurotrophic factor (BDNF). Methods: Twenty nine middle school boys (age $13.3{\pm}0.7$) were divided into two groups, 15 boys for control group and 14 in the experimental group. The control group participated in a regular exercise program, 3 times a week for 15 weeks. During the same period, the experimental group participated in an aerobic exercise program specifically designed to enhance anti-depressive effect of exercise. Serum BDNF level and its performance of each group on the Beck Depression Index (BDI), Children's Depression Inventory (CDI), Screen for Child Anxiety Related Emotional Disorders (SCARED), Aggression Questionnaire (AK-Q), and Stroop task were compared before and after the exercise program. Results: Scores of BDI, CDI, SCARED, and AK-Q were significantly lower in both groups after the exercise programs compared to those before the programs. The Stroop task performances were significantly improved after the programs. However, there were no significant differences between two exercise programs, except SCARED separation anxiety, AK-Q physical, and verbal aggression scores. Also, no association was found between serum BDNF level and anti-depressive effects of exercise. Conclusion: Our preliminary results suggest a possible effect of exercise on depression, anxiety, aggression, and cognition of child and adolescents.

• 전자공학회논문지CI
• /
• 제42권3호
• /
• pp.1-8
• /
• 2005

IETF (Internet Engineering Task Force) 표준화 기구에서 최근에 완료된 MIPv6 (Mobile IPv6) 관련 표준 RFC3775, RFC3776는 이동노드와 홈에이전트 사이에 사전에 보안연계 (SA : Security Association)가 설정 된 이후에 이동중에 홈에이전트와 상대노드에게 이동사실을 안전하게 통보하는 위치갱신에 관한 방법을 제시하고 있다. 그러나 이 표준 규격에는 이동노드의 시동(Bootstrapping)과 시동의 경우에 이동노드와 홈에이전트 간에 보안연계를 설정하는 문제에 대하여 제시된 방식이 없다. 본 논문에서는 이동노드와 홈에이전트간의 안전한 시동을 위한 방식을 제시하였다. 이 방식은 인증, 위치갱신, 홈에이전트 할당 그리고 보안연계 분배를 AAA의 안전한 채널을 통하여 이동노드와 홈에이전트간에 수행한다. 그리고 제안된 방식을 기능, 라운드트립 그리고 보안강도 관점에서 특성분석 하였다.

• 한국보건간호학회지
• /
• 제26권1호
• /
• pp.101-112
• /
• 2012

Purpose: The purposes of this study were to identify differences of duties, tasks, and task elements of care helpers between long term care (LTC) facilities and client's home (CH), and to provide data for the development of educational programs and policies. Methods: This study was a descriptive investigation; the subjects of the study were 418 care helpers. Duties, tasks, and task elements were measured using the framework proposed by Shin et al. (2012). Data were analyzed by t-test using PASW 18.0. Results: All of the jobs were statistically significant differences between LTC and CH. Dietary assistance and Daily work assistance were more frequently in CH, and the frequency of other tasks was higher in LTC than CH. Tasks with higher-reported difficulty by those who worked in LTC were as follows: personal hygiene, position change and movement, exercise and activity assistance, safety care, communication assistance, dietary assistance, environment management, daily work assistance, emergency prevention, early detection and speedy reporting, and dementia patient care. Conclusion: These findings suggest that training for care helpers of each facility type will be differentiated. Tasks and task elements reported by care helpers were modified and added to the standard textbook.

• 대한산업공학회지
• /
• 제37권1호
• /
• pp.10-18
• /
• 2011

Ergonomic product design considering users' natural use motion is of importance to improve the usability and satisfaction of a product. A five-step process of product design was developed in the present study by measuring and analyzing users' natural product-use motion with a motion capture system. The developed process was applied to ergonomic design improvement of a half guard installation part of refrigerator; new guard designs (diagonal and arc shape) were developed with the process and evaluated in terms of validity during the development as two measures (task satisfaction and similarity of natural motion). According to the evaluation result, the satisfaction at putting in- and out-task of new guard designs ($6.3{\pm}0.5$ points) was significantly higher than that of existing guard designs ($3.3{\pm}1.0$ points); the difference between natural motion and product-use motion in new guard designs ($1.0{\pm}0.3cm$) was significantly less than that of existing guard designs ($2.0{\pm}0.2cm$). The proposed process of natural motion analysis and product design is applicable to ergonomic product design and evaluation.

• 대한인간공학회지
• /
• 제32권1호
• /
• pp.87-96
• /
• 2013

Objective: The aim of this study is to describe several issues which should be considered in the human reliability analysis of soft control operations in nuclear power plants. Background: The operational environment of advanced main control rooms is totally different from that of conventional control rooms. The soft control is one of the major distinguishable features of the advanced main control rooms. The soft control operations should be analyzed to estimate the effects on human reliability. Method: The literatures, about task analysis, simulation data analysis, and a human reliability analysis method for the soft control, were reviewed. From the review, important issues for the human reliability analysis of the soft control were raised. Results: The results of task and simulation data analysis showed that the soft control characteristics could have large effect on human reliability and they should be considered in the human reliability analysis of the soft control operations. Conclusion: The soft control may affect human error and performance of operators. The issues described in this paper should be considered in the human reliability method for the advanced main control rooms. Application: The results of the soft control operation analysis might help to design more efficient interface and education/training program for preventing human errors. The described issues might help to develop a human reliability analysis method for soft control operations.

• 대한인간공학회지
• /
• 제32권1호
• /
• pp.37-45
• /
• 2013

Objective: This study describes the change of operator performance in drastic change of illumination level, and proposes an alternative method to cope with it. Background: The control standard of illumination for nuclear power plants(NPPs) is based on the set of limit criteria for maintaining a specific illumination level. However, there is a possibility to cause human errors according to the psychological and physiological influences to operators in the situation of drastic change of illumination such as SBO(Station Black Out), so a basic study is necessary to review the current approach. Method: We assessed the visual fatigue, subjective work load and task performance according to the three illumination situations(Normal Illumination, Emergency Illumination, and Drastic Change of Illumination). Result: Research finding shows that there are not significant differences in task performance between normal illumination (1,000lx level) and emergency illumination (100lx level), only if beyond the dark adaptation limit. However, subjective work load on mental demand and visual fatigue show a potential challenge to visual performance in drastic change of illumination. Conclusion/Application: Several trials can complement this challenge in NPPs by applying 3-way communication, enhancing readability of procedures, and managing the visual factors affecting the operators' performance through a Visual Environment Management Program including visual health aspects, etc.

• Clinical and Experimental Reproductive Medicine
• /
• 제44권1호
• /
• pp.1-7
• /
• 2017

The task force of the Korean Society for Reproductive Immunology recommends intravenous immunoglobulin G treatment in women with reproductive failure, including recurrent pregnancy loss and/or repeated implantation failure, who show cellular immune factors such as abnormal natural killer cell levels, natural killer cell cytotoxicity, and/or type 1 T helper immunity.