• 대한영양사협회학술지
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• 제27권4호
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• pp.209-231
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• 2021

The purpose of this study was to compare differences between essential tasks and delegable tasks among public kindergarten dietitians. A survey study was conducted through a self-administered online method from November 18 to December 28, 2019. The survey consisted of essential tasks and delegable tasks, including 6 Duties, 25 Tasks, and 94 Task Elements. The survey was distributed to a sample of 500 kindergartens in Korea, after excluding incomplete surveys and outliers, and a total of 224 responses were used for the analysis. Descriptive statistics were used to compare essential tasks and delegable tasks. The results show that 'Duty A. Nutrition Management', 'Duty B. Foodservice Management Practices', 'Duty C. Hygiene management of kindergarten foodservice', 'Duty D. Nutrition-Diet Education and counseling', and 'Duty F. Professionalism Enhancement' were recognized as essential tasks to be performed by kindergarten dietitians. All 16 tasks elements (100.0%) in 'Duty E. Managing snacks during semesters, and lunch/snack during breaks' were identified as delegable tasks. In conclusion, most tasks were recognized as essential tasks to be performed by kindergarten dietitians. On the other hand, 'Duty E. Managing Snacks during semesters, and lunch/snack during breaks' was considered a delegable task by public-attached kindergarten dietitians. It is recommended that public-attached kindergartens should consider additional workforce related to 'Duty E'. This study is expected to offer basic data on laws and regulations about the duties of kindergarten dietitians.

• 대한의용생체공학회:의공학회지
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• 제37권1호
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• pp.15-20
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• 2016

Essential tremor is a neurological disorder with a tremor of the arms and hands. It is well known that essential tremor is characterized by the postural tremor and the action tremor. There has been no report on the quantitative difference in the characteristics of two tremor types. The purpose of this study was to investigate the possible difference in tremor characteristics of postural and action tremors. Seventeen patients with essential tremor ($68.9{\pm}7.9years$, 7 men, 10 women) participated in this study. Patients performed the tasks of postural maintenance (arms outstretched) and daily actions (spiral drawing). Three-axes (pitch, roll and yaw) gyro sensors were attached on index finger, back of hand and forearm, from which the segment and the joint angular velocities were calculated. Outcome measure was the tremor amplitude defined as the root-mean-square mean of the vector-sum angular velocity at segments and joints. Two-way ANOVA showed that task and joint had main factor on the tremor amplitude (p < 0.05). Post-hoc analysis revealed that tremor amplitude at the metacarpo-phalangeal joint was not affected by task (p > 0.05). However, tremor amplitude at the wrist joint differed among the tasks (p < 0.05), and it was greater in the action tasks than in postural task. Tremor was greater at finger segments than at hand and forearm and it increased in action tasks. The results of this study would be helpful for the understanding and task-specific treatments of the essential tremor.

• 한국수학교육학회지시리즈D:수학교육연구
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• 제26권3호
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• pp.253-270
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• 2023

This study aims to investigate the extent to which Korean high school textbooks incorporate opportunities for students to engage in the mathematical modeling process through tasks related to exponential and logarithmic functions. The tasks in three textbooks were analyzed based on the actions required for each stage in the mathematical modeling process, which includes identifying essential variables, formulating models, performing operations, interpreting results, and validating the outcomes. The study identified 324 units across the three textbooks, and the reliability coefficient was 0.869, indicating a high level of agreement in the coding process. The analysis revealed that the distribution of tasks requiring engagement in each of the five stages was similar in all three textbooks, reflecting the 2015 revised curriculum and national curriculum system. Among the 324 analyzed tasks, the highest proportion of the units required performing operations found in the mathematical modeling process. The findings suggest a need to include high-quality tasks that allow students to experience the entire process of mathematical modeling and to acknowledge the limitations of textbooks in providing appropriate opportunities for mathematical modeling with a heavy emphasis on performing operations. These results provide implications for the development of mathematical modeling activities and the reconstruction of textbook tasks in school mathematics, emphasizing the need to enhance opportunities for students to engage in mathematical modeling tasks and for teachers to provide support for students in the tasks.

• 대한기계학회논문집A
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• 제28권12호
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• pp.1823-1832
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• 2004

In this paper, we proposed a TDC based F/T sensorless active compliance control algorithm for a rehabilitation robot (KARES II). The preference of compliance of the disabled is presented by clinical testing at Korea National Rehabilitation Center with the disabled. The KARES II was designed to work 12 predefined tasks which are very essential for helping the disabled. Among the tasks, some contact tasks between the robot and the disabled exist. Therefore, TDC based F/T sensorless compliance control algorithm is developed for these tasks without additional cost. We verified the proposed algorithm with experiment. Also for the practical use, suitable compliance for contact tasks is chosen by clinical testing at Korea National Rehabilitation Center.

• 한국디지털정책학회:학술대회논문집
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• 한국디지털정책학회 2006년도 춘계학술대회
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• pp.113-123
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• 2006

The purpose of this paper is twofold; 1) to evaluate the efforts of participatory government in regulatory reform, 2) to propose the strategies and tasks for future regulatory reform in Korea. An ex-post evaluation model for regulatory performance is applied to process, output, and outcome of the regulatory reform. The results of the evaluation show that there is still room for improvement in many aspects of regulatory reform. While there has been substantial advance in regulatory quality and management, carefully planned strategies are essential for Korean regulatory reform to move to the next stage of regulatory reform. Thus, based on the evaluation, future strategies and tasks for regulatory reform are presented as short-term tasks, mid to long range tasks, and continuous tasks.

• Journal of Electrical Engineering and Technology
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• 제11권4호
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• pp.987-992
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• 2016

This study introduces an example environment where wireless devices are mobile, devices use dynamic voltage scaling, devices and tasks are heterogeneous, tasks have deadline, and the computation and communication power is dynamically changed for energy saving. For this type of environment, the efficient system-level energy management and resource management for task completion can be an essential part of the operation and design of such systems. Therefore, the resources are assigned to tasks and the tasks may be scheduled to maximize a goal which is to minimize energy usage while trying to complete as many tasks as possible by their deadlines. This paper also introduces mobility of nodes and variable transmission power for communication which complicates the resource management/task scheduling problem further.

• 한국수학교육학회지시리즈A:수학교육
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• 제58권1호
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• pp.139-160
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• 2019

This study attempts to examine statistical tasks in the middle-school mathematics textbooks of Korea and Connected Mathematics 3 [CMP] of the US in terms of an opportunity-to-learn for statistical reasoning. We utilized an analytical framework consisting of types of context, statistical reasoning level, cognitive demand of the tasks, and types of student response. The findings from the task analysis suggested that Korean textbooks focused on finding answers by applying previously learned algorithms or formulas and thus provided students with very limited opportunities to experience statistical reasoning. Also, the results proposed that the mathematical tasks in statistics unit of CMP3 offer more essential and complex tasks that promote students' conceptual understanding of various statistical ideas and statistical reasoning in a meaningful way.

• 한국정보통신학회논문지
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• 제1권2호
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• pp.159-168
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• 1997

본 논문에서는 멀티미디어 환경등의 실시간 시스템에서 타스크에게 빠른 응답시간을 제공하는 실시간 스케쥴링 기법을 제시하고자 한다. 타스크를 주기적 타스크와 비주기적 타스크로 구분하고 타스크의 형태를 긴급 타스크, 필수 타스크, 일반 타스크로 구분하여 다양한 타스크의 처리를 원하는 멀티미디어 환경에서도 적용할 수 있도록 하며, 주기적 타스크의 경우 마감시간을 지키는 범위 내에서 최대한 수행을 연기하여 비 주기적 타스크에 빠른 응답시간을 제공한다. 각 타스크는 우선 순위를 가지며 우선 순위의 변경은 동종 타스크 에서만 허용하고 동적 우선순위 방법을 이용하여 스케줄링한다. 긴급타스크의 경우 어떠한 경우에도 수행할 수 있도록 하며 준비된 실시간 타스크 가 여러 개인 경우 laxity값이 작은 타스크를 먼저 수행 할 수 있도록 한다. 본 눈문에서는 비주기적 타스크가 있을 때와 없을 때를 구분하여 비주기적 타스크가 있을 때에는 주기적 타스크를 뒤로 미루고 비주기적 타스크를 앞에서 먼저 처리하며 비주기적 타스크가 없을 때에는 주기적 타스크를 앞에서 처리하는 스케줄링 기법을 사용한다. 시뮬레이션 결과 다중 프로세서 시스템에서 지금까지 suboptimal 하다고 알려진 EDZL 보다 응답시간 관점에서 제안한 기법이 우수하였고 부하가 증가하여도 성능이 우수하였다.

• Journal of the Korean Data and Information Science Society
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• 제14권1호
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• pp.103-111
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• 2003

Kernel machines are used widely in real-world regression tasks. Kernel ridge regressions(KRR) and support vector machines(SVM) are typical kernel machines. Here, we focus on two types of KRR. One is inductive KRR. The other is transductive KRR. In this paper, we study how differently they work in the interpolation and extrapolation areas. Furthermore, we study prediction interval estimation method for KRR. This turns out to be a reliable and practical measure of prediction interval and is essential in real-world tasks.

• 한국학교수학회논문집
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• 제22권3호
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• pp.241-256
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• 2019

본 연구는 '확률과 통계' 교과서에 제시된 과제의 맥락 유형과 과제를 수행할 때 요구되는 인지적 역량이 학생들에게 어떠한 학습기회를 제공하는지 살펴보았다. 이를 위해 2015 개정 수학과 교육과정에 따른 '확률과 통계' 검정교과서 전체 9권을 분석한 결과, 맥락 기반 과제(CF유형, RE유형)는 각 교과서마다 전체 과제 개수의 67.5%부터 78.0%로 나타났지만 실생활에 연관된 본질적인 과제(RE유형) 비율은 0.4%부터 2.0%로 나타나 교과서에 제시된 대부분의 맥락 기반 과제는 실생활 소재를 위장한 과제임을 알 수 있었다. 그리고 맥락 기반 과제의 인지적 역량은 각 교과서마다 재생산(Rp)범주에 속하는 과제 비율은 29.6%부터 50.0%로 다양하게 나타났고, 연결(Co)범주 과제 비율은 33.8%부터 54.3%, 반성(Rf)범주 과제 비율은 8.8%부터 20.0%로 나타나 과제수행 시 학생들이 반성적 인지 과정을 경험할 수 있는 학습기회는 다소 충분하지 않음을 알 수 있었다.