• 대한물리의학회지
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• 제8권1호
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• pp.1-9
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• 2013

PURPOSE: This study compared the effects of dual motor task training and simple task training on the balance of subacute stroke patients. METHODS: A total of 23 subacute stroke patients participated in the study. The subjects were allocated randomly to two groups: an experimental group and a control group. Both groups received conventional treatment for 50 minutes, 5 times per week for 6 weeks. In addition, the experimental group stacked blocks, moved catch cups, and moved rings while standing and gait. To evaluate the effects of the exercises, subjects were evaluated by using the balance system and the timed get up and go test(TUG) for balance measurement. The data was analyzed using a paired t-test and independent t-test to determine the statistical significance. RESULTS: The experimental group showed a significant decrease on the medial-lateral and anterior-posterior stability index compared to the control group (p<.05) for the simple task and a significant decrease on the medial-lateral and anterior-posterior stability index compared to the control group for the dual task. In addition, the experimental group showed a significant increase in TUG time compared to the control group (p<.05). CONCLUSION: These results support the perceived benefits of dual motor task training to augment the balance of subacute stroke patients. Therefore, dual motor task training is recommended for subacute stroke patients.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제5권9호
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• pp.1544-1572
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• 2011

Task placement and scheduling are traditionally studied in following aspects: resource utilization, application throughput, application execution latency and starvation, and recently, the studies are more on application scalability and application performance. A methodology for task placement and scheduling centered on tasks based on virtual machines is studied in this paper to improve the performances of systems and dynamic adaptability in applications development and deployment oriented parallel computing. For parallel applications with no real-time constraints, we describe a thought of feature model and make a formal description for four layers of task placement and scheduling. To place the tasks to different layers of virtual computing systems, we take the performances of four layers as the goal function in the model of task placement and scheduling. Furthermore, we take the personal preference, the application scalability for a designer in his (her) development and deployment, as the constraint of this model. The workflow of task placement and scheduling based on virtual machines has been discussed. Then, an algorithm TPVM is designed to work out the optimal scheme of the model, and an algorithm TEVM completes the execution of tasks in four layers. The experiments have been performed to validate the effectiveness of time estimated method and the feasibility and rationality of algorithms. It is seen from the experiments that our algorithms are better than other four algorithms in performance. The results show that the methodology presented in this paper has guiding significance to improve the efficiency of virtual computing systems.

• Korean Journal of Radiology
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• 제1권1호
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• pp.19-24
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• 2000

Objective: In order to investigate the functional brain anatomy associated with verbal and visual working memory, functional magnetic resonance imaging was performed. Materials and Methods: In ten normal right handed subjects, functional MR images were obtained using a 1.5-T MR scanner and the EPI BOLD technique. An item recognition task was used for stimulation, and during the activation period of the verbal working memory task, consonant letters were used. During the activation period of the visual working memory task, symbols or diagrams were employed instead of letters. For the post-processing of images, the SPM program was used, with the threshold of significance set at p < .001. We assessed activated brain areas during the two stimulation tasks and compared the activated regions between the two tasks. Results: The prefrontal cortex and secondary visual cortex were activated bilaterally by both verbal and visual working memory tasks, and the patterns of activated signals were similar in both tasks. The superior parietal cortex was also activated by both tasks, with lateralization to the left in the verbal task, and bilaterally without lateralization in the visual task. The inferior frontal cortex, inferior parietal cortex and temporal gyrus were activated exclusively by the verbal working memory task, predominantly in the left hemisphere. Conclusion: The prefrontal cortex is activated by two stimulation tasks, and this is related to the function of the central executive. The language areas activated by the verbal working memory task may be a function of the phonological loop. Bilateral prefrontal and superior parietal cortices activated by the visual working memory task may be related to the visual maintenance of objects, representing visual working memory.

• 한국콘텐츠학회논문지
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• 제10권7호
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• pp.386-395
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• 2010

본 연구는 호텔직원의 Big 5 성격요인과 직무몰입, 직무몰입과 고객지향성의 영향관계를 발견하는 것이며, 호텔직원의 성격요인을 조직에 어울리게 더욱 발전시키는 방법을 제공하는 것을 목적으로 한다. 첫째, Big 5 성격요인과 직무몰입의 회귀분석결과의 세부적인 검증결과는 다음과 같이 제시되었다. 직무애착은 외향성과 친화성에 유의한 영향을 주었다. 직무책임감, 직무중요성은 성실성과 안정성이 유의한 영향을 주었다. 둘째, 직무몰입과 고객지향성의 회귀분석의 결과의 세부적인 검증결과는 다음과 같이 제시되었다. 고객욕구충족의 경우는 직무애착과 직무책임감이 유의한 영향을 주었다. 고객응대서비스는 직무책임감과 직무중요성이 유의한 영향을 주는 것으로 나타났다.

• 대한공업교육학회지
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• 제36권1호
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• pp.167-190
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• 2011

이 연구는 기술 가정과 '정보통신기술의 활용'단원에서 문제 해결 과제중심 수업이 주요 개념의 이해 정도와 학습 태도에 미치는 효과를 밝히는 데 그 목적이 있다. 이를 위해 4차시에 해당하는 '정보통신기술의 활용'단원을 실험집단에게는 문제 해결 과제 중심 수업으로 진행하고 통제집단에게는 강의식 수업으로 진행하였다. 서울특별시 소재 중학교 2학년 2개 학급 각 68명으로 구성된 실험집단과 통제집단에 대해 개념의 이해 정도와 학습 태도를 실험한 결과는 다음과 같다. 첫째, 정보통신에 대한 개념 이해 정도를 알아본 실험에서는 사전장사에서 두 집단 사이에 유의미한 차이가 나타나지 않았으나 사후검사에서는 문제 해결 과제 중심 수업을 한 실험집단이 강의식 수업을 한 통제 집단보다 평균 5.87점 높게 나타났다. 아울러 p< .05 수준에서 통계적으로 유의미한 차이를 보였다. 정보 통신에 대한 개념을 4개의 하위 영역으로 구분하였음 때, 통신의 원리와 방식, 네트워크의 연결에 대한 개념 이해에 관한 2개 영역의 검사에서는 두 집단 사이에 p< .05 수준에서 유의미한 차이를 보이지 않았으나 나머지 2개 영역인 정보의 표현과 유형, 통신 네트워크의 구성과 종류에 관한 개념 이해 검사에서는 유의미한 차이가 나타났다. 둘째, 학습태도에 관한 실험에서는 문제 해결 과제 중심 수업을 적용한 실험집단이 강의식 수업을 적용한 통제집단보다 학습태도가 더 바람직하게 변화되고 있음을 확인할 수 있었다. 이러한 결과는 '정보통신기술의 활용'단원에서 문제 해결 과제중심 수업이 강의식 수업에 비해 주요 개념의 이해 정도와 학습 태도를 보다 긍정적으로 향상시킴을 보여준다.

• 한국전문물리치료학회지
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• 제12권3호
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• pp.67-73
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• 2005

Prospective memory (PM) is related to remember to carry out a previously intented behaviour. The purpose of this study was to develop a paradigm for measuring PM function to diagnosis in mild cognitive impairment 1 or brain injury in patients 2. among brain injured patients Thirty-eight normal healthy subjects participated in current study. The paradigm was composed of four conditions: a baseline and three intention conditions (expectation, execution 1 and 2). In the expectation condition, subjects were asked to make a new response to intented stimuli during ongoing task, but the intented stimuli never occurred. In the execution 1 (one type of expected stimulus) and 2 (two types of expected stimuli), the intended stimuli did occur in 20% of trials. The reaction time and error rate were calculated in each condition. Repeated measures using ANOVA of subject's mean reaction times (RTs) and mean error rates (ERs) showed main effects of conditions during ongoing task. The comparison of PM tasks in executive condition 1 and 2 also showed significance in RTs and ERs. This paradigm reflects sufficiently the performance of prospective memory function during ongoing task in normal individuals. Thus, we suggest that the paradigm will be helpful to study neural network of PM function using brain imaging techniques and diagnosis of PM dysfunction.

• 문화기술의 융합
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• 제8권6호
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• pp.543-551
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• 2022

본 연구는 간호대학생의 과제가치가 수업참여도에 영향을 미치는 과정에서 학업적 자기효능감의 매개효과를 파악하기 위해 시도되었다. 연구대상자는 G시에 소재한 K대학의 간호학과 2학년 재학생 161명으로, 자료수집 기간은 2020년 10월 5일~10월 14일이었다. 과제가치와 수업참여도 간의 관계에서 학업적 자기효능감의 매개효과는 단순 및 다중회귀분석을 활용한 Baron과 Kenny의 3단계 매개효과 검증절차를 이용하여 분석하였고, 매개효과에 대한 통계적 유의성은 Sobel test로 검증하였다. 본 연구결과 과제가치와 학업적 자기효능감은 수업참여도에 영향을 미치는 주요 요인이었으며, 과제가치와 수업참여도 간의 관계에서 학업적 자기효능감은 유의한 부분매개 변인인 것으로 나타났다. 이들 요인은 수업참여도를 55% 설명하였다. 학습자의 수업참여도를 높이기 위해서는 과제가치와 학업적 자기효능감을 향상시킬 수 있는 통합적 접근방법이 필요하다.

• 마케팅과학연구
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• 제10권
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• pp.27-43
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• 2002

본 연구에서는 쇼핑센터 종업원의 개별 직무특성과 이직의도 간의 관계에 있어 직무만족과 조직몰입이 매개작용을 하는지 여부를 검증하였다. 매개작용 검증을 위한 구체적인 방법으로는 Baron과 Kenny(1986)가 제시한 접근법이 사용되었다. 그 결과, 직무만족이 과업중요성과 이직의도 간의 관계 및 자율성과 이직의도 간의 관계를 매개하는 것으로 나타났다. 그리고 조직몰입은 과업정체성과 이직의도 간의 관계, 과업 중요성과 이직의도 간의 관계, 그리고 자율성과 이직의도 간의 관계를 매개하는 것으로 나타났다. 이러한 연구결과는 개별 직무특성과 결과변수 간의 관계에 있어 중요심리상태를 대체하는 다른 매개변수들이 존재할 수 있음을 보여 주는 것어다. 한편 실무적 입장에서는 직무충실화를 통해 종업원의 만족과 몰입을 이끌어 내고 이러한 만족과 몰입을 통해 이직율을 낮추는 방향으로의 인적자원관리가 요청된다고 하겠다.

• 임상간호연구
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• 제21권3호
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• pp.377-388
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• 2015

Purpose: To identify user requirements for electronic nursing record (ENR) systems so as to ensure system usability. Methods: A mixed methods approach were applied in three steps : (i) task and workflow analysis with literature review of nursing documentation, (ii) literature reviews of system usability, and (iii) Use Case idenfication and consensus-based validation. We analyzed the nursing activity logs collected from a time-motion investigation of six hospitals. The Use Cases were validated by eight clinical experts from different hospitals and two experts from academia in a sequential Delphi survey. Consensus was achieved for the significance score and agreement among the panel. Results: Eight task groups and patterns of task flow were observed, which were translated into nine Use Cases. The specification of Use Cases was derived from principles, guidelines, and recommendations on nursing documentation and electronic health record systems, which was organized into three requirements of each Use Case: functionality, information, and design characteristics. Each Use Case achieved an agreement of 50~70%, and significance scores of 4 or 5 on a 5-point Likert scale. Conclusion: The nine Use Case identified were considered to be important and adequate in terms of both clinical and informatics contexts.

• 한국문헌정보학회지
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• 제17권
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• pp.229-259
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• 1989

The school library plays very important and central role for the fullfillment of educational objective in the process of implementing the school curriculum. And the media specialist known as teacher-librarian is. primarily responsible for the successful operation and effective management of the media center. It is true that effectiveness of the school library depends greatly on the cooperative coordination among teacher-librarian, teacher and principal in addition to the strong support and effective supervision of school district authority, specifically, supervisor of school library program. The successful program therefore is influenced by their perception of the teacher-librarian's role. The purpose of this study was to investigate the teacher-librarian's. educational role perceived by teacher-librarian, teacher, principal and school district supervisor. A standard task model describing both the management and educational functions and expectations of teacher-librarian was proposed after studying the relevant current standards of four countries. Serveral hypotheses were made regarding role perception and a survey instrument was designed based on this proposed task model and the results of the literature review to validate the hypotheses. The questionnaires were mailed out and the returned questionaires were analyzed by SPSS computer routine. The major findings are summarized as follows: 1) There was difference of the role perception among teacher-librarian, teacher, principal and district supervisor at the significance level of p<0.001 for both management and educational functions of teacher­librarian. The mean score of the teacher-librarian was highest among four groups and the score for the educational function tasks were lower than that of management function tasks. 2) The positive correlation exists at the significance level of p<0.001 between the role perception and the attitude toward changing social trends such as acceptance of new technology, need for better communication and information. 3) The positive correlation exists at the significance level of p<0.001 between the role perception and the view on the curriculum and teaching method.