• 대한영양사협회학술지
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• 제22권1호
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• pp.26-40
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• 2016

This study aimed to compare perception of job importance, job performance, and job difficulty between clinical dietitians working at small and medium hospitals in Busan. The survey was conducted from July 15 to August 31, 2014, and data were analyzed using the SPSS program. The mean scores for perception of job importance, job performance, and job difficulty of clinical dietitian's task elements were 3.88, 2.87, and 3.18 out of 5.0, respectively. Perception of job importance had a positive relationship with job performance. However, job performance showed a negative relationship with job difficulty. There were strong positive relationships among nutrition assessment, nutrition diagnosis, nutrition intervention, nutrition monitoring & evaluation, nutrition research in perception of job importance (P<0.05, P<0.01). Nutrition assessment, nutrition diagnosis, nutrition intervention, and nutrition research showed positive relationships with job performance (P<0.05, P<0.01). There was also a positive relationship among clinical dietitian's task with job difficulty (P<0.05, P<0.01). These results suggest that it would be effective to adopt training programs for appropriate nutrition service and to provide continuous education programs for professional development.

• 한국학교수학회논문집
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• 제19권4호
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• pp.357-371
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• 2016

본 연구는 수학적 모델링의 과제공간을 설정하고 이를 기반으로 모델링 과제의 복잡성을 나타내는 평가척도(rating scheme)를 설계하여 예비 수학교사를 대상으로 두 가지의 실험연구 결과를 얻었다. 첫째는 종전의 문제구조를 표현한 문제공간을 발전시켜 모델링 과제에 맞는 과제공간을 설정하고, 모델링 과제의 복잡성을 수치로 나타내는 계량적인 평가척도를 설계하여 의미 있는 타당도를 확인하였다. 둘째는 모델링의 과제 복잡성에 대한 평가척도, 학생 성취수준, 과제 특수 발견 전략의 개수 사이의 일관된 패턴이 있음을 발견하였다.

• 대한인간공학회지
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• 제19권2호
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• pp.33-45
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• 2000

Present study was performed to compare different types of teleoperation performance measures. A modified Cooper-Harper rating scale and a distance measure were newly introduced and compared to two traditional measures, the error rate and time-to-completion. Participants performed a simulated telerobotic task with varying visual display interfaces. The results of correlation analyses revealed that the modified Cooper-Harper ratings had a close association with the error rate measure. The distance measure also appeared to be a consistent performance measure, which accounted for both the error rate and time-to-completion. A further analysis, however, showed that the effectiveness of each performance measure varied with the level of task difficulty. The results imply that the choice of performance measure should be made based on the task difficulty as well as the particular task being studied. The results revealed here also have implication for performance measures of various display and control systems including aircraft navigation displays and tactical displays.

• 아동학회지
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• 제38권3호
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• pp.75-90
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• 2017

Objective: This study aimed to identify children's cognitive processing and performance characteristics while multiple task performance. It confirmed whether their multiple task performance and psychological refractory period (PRP) varied by task condition (stimulus onset asynchrony [SOA] and task difficulty) and stimulus modality. Methods: Seventy 5-year-olds were recruited. Multi-task tools were developed using the E-prime software. The children were required to respond to two stimuli (visual or auditory) presented with microscopic time difference and their response times (RTs) were recorded. Results: As the SOA increased, the RTs in the first task increased, while the RTs in the second task and PRP decreased. The RTs of the first and second tasks, and the PRP for difficult tasks, were significantly longer than those for easy tasks were. Additionally, there was an interaction effect between the SOA and task difficulty. Although there was no main effect of stimulus modality, task difficulty moderated the modality effect. In the high difficulty condition, the RTs of the first and second tasks and PRP for the visual-visual task were significantly longer than those for auditory-auditory task were. Conclusion: These results inform theoretical discussions on children's multi-task mechanism, and the loss of multiple task performance. Additionally, they provide practical implications and information on the composition of multi-tasks suitable for children in educational environments.

• 한국가정과교육학회지
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• 제33권1호
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• pp.81-99
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• 2021

본 연구는 부모-아동 상호작용이 아동의 집행기능 곤란을 통해 아동의 학업수행에 미치는 영향을 살펴보는 것을 목적으로 하였다. 한국아동패널 자료 중 8차년도(2015년, 초1), 9차년도(2016년, 초2), 10차년도(2017년, 초3) 자료를 활용하였다. 본 연구의 분석대상은 부모-아동 상호작용, 아동의 집행기능 곤란, 아동의 학업수행 변인에 모두 응답한 559명의 아동과 가정이다. 자료는 구조방정식모형을 통해 분석하였다. 주요 연구결과는 다음과 같다. 첫째, 어머니-아동 상호작용과 아버지-아동 상호작용은 아동의 학업수행에 유의한 직접적인 영향을 미치지 않았다. 둘째, 어머니-아동 상호작용은 아동의 집행기능 곤란을 통해 아동의 학업수행에 유의하게 정적인 간접적인 영향을 미쳤다. 본 연구의 결과는 아동의 학업수행에 어머니-아동 상호작용과 아동의 집행기능 곤란이 중요함을 밝혔다.

• 한국식품영양학회지
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• 제32권5호
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• pp.536-552
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• 2019

The purpose of this study was to develop a standardized job description for dietitians using the DACUM technique. To examine the validity of job description through DACUM, dietitians were surveyed relative to importance, performance, and difficulty. The survey was conducted April 1-30, 2014. A total of 217 questionnaires were used in the analysis. The final developed job description for dietitians included six duties, 38 tasks, and 210 task elements. DACUM's findings include six duties: nutrition management, food service operation management, hygiene safety management, community food and nutrition program management, organization management, and professionalism strengthening. There were 5.1 points regarding importance, 4.1 points regarding performance, 4.9 points regarding difficulty, and statistically significant differences (p<0.001). Dietitians responded that 'nutrition management' and 'hygiene safety management' were the most important. 'Hygiene and safety management' showed the highest performance, and 'community food and nutrition program management' and 'professionalism strengthening'' showed the highest difficulty. Thus, it is considered that the job analysis results can be used to evaluate and improve the subjects' training program. Dietitians' jobs are subject to various environmental changes, such as demographic changes, health care system changes, and the development of the food industry, and thus, should be reviewed and analyzed periodically.

• 대한통합의학회지
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• 제10권4호
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• pp.83-91
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• 2022

Purpose: The goal of this study was to investigate changes in dual-task performance according to age and difficulty of cognitive tasks for the in community-dwelling elderly populations, as well as to examine their changes in hand dexterity according to age and cognitive function. Methods: A total of 135 people aged 65 years old and over participated in the study. To evaluate each participant's dual-task performance, each participant completed a dual task. To assess their cognitive function, the Korean Mini-Mental State Examination (MMSE-K) and the Korean version of Montreal Cognitive Assessment (MoCA-K) were the tools used. Participants were divided into three groups based on their age: 65-69 years, 70-79 years, and 80-89 years. Results: The findings showed that age groups and the difficulty of the cognitive task significantly affected the amount of time required for dual-task performance (p<.001). Additionally, the dual-task correct response rate (CRR) decreased significantly with age groups and the difficulty of the cognitive task (p<.001). The amount of time required for finger dexterity performance increased significantly with age groups (mean score±standard deviation [SD]; 19.46±2.26 in subjects aged 65-69 years; 21.92±2.61 in subjects aged 70-79 years; and 23.82±2.92 in subjects aged 80-89 years; p<.001). Moreover, as a result of the correlation between hand dexterity and cognitive function, MoCA-K was -0.563 and MMSE-K was -.412, showing a statistically significant correlation (p<.001). Conclusions: Age and the difficulty of the cognitive task affect the community-dwelling elderly populations in terms of dual-task performance and dual-task CRR. In addition, aging and general cognition have an impact on hand dexterity. Based on the results of this study, it is anticipated that the results will serve as a reference for domestic clinical trials that confirm cognitive decline in the elderly using dual task and hand dexterity evaluation.

• Journal of Construction Engineering and Project Management
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• 제2권1호
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• pp.1-4
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• 2012

The importance of project performance management as an alternative for solving problems is rising, which are followed by the hardships of managing construction project in the construction industry. This research classifies and applies the improvements made by the operator's work, in order to apply factors of success on the construction project, as performance management factors. In addition, in order to predict the results reflecting the project characteristic of performance management factor un-improvable by the operator in the initial stage of construction, the effect of project characteristic to the performance was drawn by performance difficulty. Also, in order to improve the predicted performance, researches on setting valid best practices according to the performance territory through a correlation analysis between the best practices improvable through the operator's work, and the performance was made.

• 한국직업건강간호학회지
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• 제24권4호
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• pp.340-351
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• 2015

Purpose: This study was conducted to identify the job competencies of HIV counseling nurses and to figure out the importance, level of difficulty, and performance frequency of the competencies. Methods: The job competencies were drawn from 22 HIV counseling nurses by developing new models and utilizing specialist groups. The importance, level of difficulty, and performance frequency of the competencies were analyzed using the average and deviation. Results: The results of this study identified 6 job competencies such as counseling performance, expertise utilization, cooperation, support, administration, and self-development, 28 sub-competencies, and 48 job descriptions. Out of the 6 job competencies, counseling performance recorded high levels in the importance, level of difficulty, and performance frequency. Conclusion: The study results will be used as the basic data of the training programs for strengthening the job competencies of HIV counseling nurses. Furthermore, it is expected that the results will contribute to the prevention of HIV/AIDS transmission, the core of the national HIV/AIDS control programmes, and the improved health and quality of life in people living with HIV.

• 정보처리학회논문지:소프트웨어 및 데이터공학
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• 제11권8호
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• pp.315-324
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• 2022

이 논문에서는 자연어로 구성된 수학 문장제 문제 자동 풀이하기 위한 Transformer 기반의 생성 모델인 KoEPT를 제안한다. 수학 문장제 문제는 일상 상황을 수학적 형식으로 표현한 자연어 문제이다. 문장제 문제 풀이 기술은 함축된 논리를 인공지능이 파악해야 한다는 요구사항을 지녀 최근 인공지능의 언어 이해 능력을 증진하기 위해 국내외에서 다양하게 연구되고 있다. 한국어의 경우 문제를 유형으로 분류하여 풀이하는 기법들이 주로 시도되었으나, 이러한 기법은 다양한 수식을 포괄하여 분류 난도가 높은 데이터셋에 적용하기 어렵다는 한계가 있다. 본 논문은 이에 대해 '식' 토큰과 포인터 네트워크를 사용하는 KoEPT 모델을 사용했다. 이 모델의 성능을 측정하기 위해 현존하는 한국어 수학 문장제 문제 데이터셋인 IL, CC, ALG514의 분류 난도를 측정한 후 5겹 교차 검증 기법을 사용하여 KoEPT의 성능을 평가하였다. 평가에 사용된 한국어 데이터셋들에 대하여, KoEPT는 CC에서는 기존 최고 성능과 대등한 99.1%, IL과 ALG514에서 각각 89.3%, 80.5%로 새로운 최고 성능을 얻었다. 뿐만 아니라 평가 결과 KoEPT는 분류 난도가 높은 데이터셋에 대해 상대적으로 개선된 성능을 보였다. KoEPT가 분류 난도의 영향을 덜 받으며 좋은 성능을 얻게 된 이유를 '식' 토큰과 포인터 네트워크 때문이라는 것을 ablation study를 통해서 밝혔다.