• Physical Therapy Rehabilitation Science
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• 제5권4호
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• pp.170-176
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• 2016

Objective: The purpose of this study was to compare the effect of ball kicking dual task gait training with the addition of a cognitive task with general treadmill gait training (TGT) on gait speed, gait endurance, functional gait, balance and balance confidence in patients with chronic hemiparetic stroke. Design: Randomized controlled trial. Methods: Fourteen stroke patients who volunteered to participate in this study were randomly divided into two groups with seven patients in each group: ball kicking dual task training (DTT) group and TGT group. The DTT group received ball kicking DTT with cognitive tasks consisted of three stages and the TGT group received TGT using normal walking speed, respectively, for 30 minutes per day 3 days per week for 4 weeks. Outcome assessments were made with the 10-meter walking test (10MWT), 6-minute walking test (6MWT), functional gait assessment (FGA), Berg balance scale (BBS), timed up and go test (TUG), and the activities-specific balance confidence (ABC) scale. Results: The DTT group showed more significant improvement in the 10MWT, 6MWT, FGA, BBS, TUG, and ABC than the TGT group (p<0.05). In addition, within groups comparison showed significant improvement in all variables (p<0.05). Conclusions: The findings suggest that both ball kicking dual task gait training and TGT improve gait performance and balance in patients with chronic hemiparetic stroke. However, ball kicking dual task gait training results showed more favorable outcomes than TGT for chronic hemiparetic stoke patients.

• 정보과학회 논문지
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• 제43권6호
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• pp.613-620
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• 2016

본 논문에서는 대규모의 작업을 고성능으로 처리하기 위한 Many-Task Computing(MTC) 기술을 기존의 빅데이터 처리 플랫폼인 Hadoop에 적용하기 위한 MOHA(Many-Task Computing on Hadoop) 프레임워크에 대해 기술한다. 세부적으로는 MOHA의 기본 개념과 개발 동기, 분산 작업 큐에 기반한 PoC(Proof-of-Concept) 수행 결과를 제시하고 향후 연구 방향에 대해서 논의하고자 한다. MTC 응용은 각각의 태스크들이 요구하는 I/O 처리량은 상대적으로 많지 않지만, 동시에 대량의 태스크들을 고성능으로 처리해야하고 이들이 파일을 통해서 통신한다는 특징을 가지고 있다. 따라서 기존의 상대적으로 큰 데이터 블록 사이즈에 기반한 Hadoop 응용과는 또 다른 패턴의 데이터 집약형 워크로드라고 할 수 있다. 이러한 MTC 기술과 빅데이터 기술의 융합을 통해 멀티 응용 플랫폼으로 진화하고 있는 Hadoop 생태계에 신규 프레임워크로서 대규모 계산과학 응용을 실행할 수 있는 MOHA를 추가하여 기여할 수 있을 것이다.

• 복식
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• 제51권8호
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• pp.77-91
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• 2001

The purpose of this study was to investigate the effects of the perceived facial attractiveness and appropriateness of clothing on the evaluation of task performance of target person mediated by subjects'likability toward and trait evaluation of the target person. The facial attractiveness of the female university students were used as index of physical attractiveness in this study. Three levels of facial attractiveness was manipulated based on the judgements by 30 female university students. Four types of clothes were selected perceived appropriate for two assumed situations by female university students. Three female faces having high. medium, and low attractiveness were simulated with the same body dressed four types of clothing respectively using CAD system, and a total of 12 stimulus persons were created. The design for the experiment was a $3\tiems4\times2$ randomaized factorial. with three levels of facial attractiveness(high, medium, low), and four types attire(formal-masculine, formal-feminine, casual-masculine, casual-feminine), two kinds of context (job interview, dating) in which perceptions were occurred. The subjects of this study was 524 male and female(262 of male, 262 of female) university students from 3 universities in Kwangju, Korea. The data were analysed using factor analysis. descriptive statistics, regression, path analysis. The results were as follows : 1. In bogus job interview. the direct effect of perceived facial attractiveness on task performance evaluation was .175 and the indirect effect mediated by likability and trait evaluation was .285 in path analysis model. The direct effect of perceived appropriateness of clothing on task performance evaluation was .111 and the indirect effect mediated by likability only was .0564 in pass analysis model. 2. In dating situation, the direct effect of perceived facial attractiveness on task performance evaluation was .355, the indirect effect mediated by likability and trait evaluation was .188 in path analysis model. The direct effect of perceived appropriateness of clothing on task performance evaluation was .108, the indirect effect mediated by likability and trait evaluation was .060 in Pass analysis.

• 간호행정학회지
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• 제17권1호
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• pp.106-114
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• 2011

Purpose: This study was done to examine effects of task performance style, communication ability and their interaction on problem-solving ability and nursing competency of nursing students participating in a nursing management practicum. Methods: The study was a non-equivalent control group non-synchronized design. Participants were 56 fourth year nursing students (25 in the cooperative task group and 31 in the individual task group) and data were collected from March to September 2010. Additionally, two groups were classified based on communication ability of students and four groups were classified by their task performance style and communication ability. Problem-solving ability and nursing competency were measured pre- and post-test and compared between groups. Data were analyzed using SPSS Windows 17.0 program. Results: Neither problem-solving ability and nursing competency were statistically significantly different according to task performance style. Nursing competency was statistically significantly higher in the high communication group compared to the low communication group. Problem-solving ability was significantly different among the four groups classified by task performance style and communication ability. Conclusion: Nursing educators may need to improve students' communication ability to improve nursing competency and also assign different tasks based on communication ability of nursing students to improve problem-solving ability.

• Physical Therapy Rehabilitation Science
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• 제7권1호
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• pp.41-47
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• 2018

Objective: To investigate the effect of performing three different toe touch (TT) task condition on the activities of four different muscles using surface electromyography (sEMG) in healthy young adults. Design: Cross-sectional study. Methods: A total of 20 healthy young adults (6 males, 14 females) voluntarily participated in this study. All subject randomly performed three different TT task conditions as follows: general toe-touch (GTT) task, one side toe touch (TT) task during weight bearing, and one side foward toe touch (FTT) task during weight bearing. The muscle activities of erector spinae (ES), gluteus maximus (GM), hamstring (HAM), tibialis anterior (TA) muscles during the TT task were measured using sEMG. Subject performed each of the three conditions three time in random order and mean values were obtained. Results: With the trunk flexion period, the TT and FTT showed significantly greater muscle activity in the GM, HAM and TA compared to the GTT task (p<0.05). The TT position showed significantly greater HAM muscle activity than the GTT position. The dominant and nondominant ES muscle activity was significantly greater in the FTT compared to the GTT position (p<0.05). The dominant GM, HAM, and TA was significantly greater in the TT and FTT compared to the GTT position (p<0.05). Although the dominant ES was significantly greater in the TT and FTT compared to the GTT position (p<0.05), the dominant GM muscle activity was signifcantly greater in the TT compared with the GTT position (p<0.05). Conclusions: These findings may be applicable within the clinical field for selective trunk and lower extremity muscle activation and basic biomechanics purpose.

• 한국의류학회지
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• 제26권3_4호
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• pp.412-421
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• 2002

The main purpose of this study was to examine whether there exist physical attractiveness stereotype, ‘what is beautiful is good’on the evaluation of stimulus person’s task performance in present Korea. This study also examine the effects of the appropriateness of the stimulus person’s clothing and subjects’sexes on the task performance evaluation. The index of the physical attractiveness of this study was the facial attractiveness judged by 30 female university students. The appropriateness of clothing was manipulated by 4 types of clothing perceived appropriate for two assumed situations by female university students. Three female faces having high, medium, and low attractiveness were simulated with the same body dressed four types of clothing using CAD system, and a total of 12 stimulus persons were created. A total of 524 male and female(262 of male, 262 of female) university students from 3 universities in Kwangju, Korea were participated as subjects in this study. The design for the experiment was a $3\;{\times}\;4\;{\times}\;2$ randomaized factorial, with three levels of facial attractiveness (high, medium, low), and four types attire(formal-masculine, formal-feminine, casual-masculine, casual-feminine), two kinds of context (job interview, dating) in which perceptions were occurred. The data were analysed using MANOVA, Duncan test and F-test. The results were as fellows: 1. The stimulus person’s facial attractiveness exerted significant positive effects on the evaluation of task performance in both of two assumed situations (p<.001, respectively). 2. The appropriateness of stimulus person’s clothing did not influence on the task evaluation in both of two assumed situations. 3. The gender of subjects did not influenced the task performance evaluation in both of two assumed situations.

• Physical Therapy Rehabilitation Science
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• 제13권3호
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• pp.332-342
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• 2024

Objective: With the proportion of the elderly population in Korea reaching 17.5% in 2022 and projected to increase to 20.6% by 2025, 30.1% by 2035, and 43% by 2050, the accelerated aging of the population is raising societal concerns about elderly care. Maintaining mobility is crucial for a healthy and independent old age. Design: Cross-sectional study Methods: This study investigates the effects of dual-task performance on gait variables and cognitive function in older adults. This cross-sectional study involved 60 older adults aged 65 and above, categorized into a dementia group (Korean version of Montreal Cognitive Assessment (MoCA-K) score ≤ 22) and a control group (MoCA-K score ≥ 23). Cognitive and gait functions were assessed using the GAITRite system (GAITRite system, CIR Systems Inc., USA), measuring gait variables (speed, stride length, etc.) before and after dual-task performance. The assessments were conducted under a single-blind condition, and data were analyzed using SPSS (ver. 25.0, SPSS Inc., USA). Results: The dementia group scored lower on cognitive assessments compared to the control group (p<0.05). In dual-task performance evaluations, the dementia group exhibited longer total task times and lower accuracy than the control group (p<0.001), while reaction times were longer but not statistically significant. GAITRite system analysis revealed that the dementia group had reduced gait speed and stride length compared to the control group (p<0.05). However, the difference in gait time was not statistically significant. The study results indicate that older adults with dementia show significant differences in cognitive function and gait performance, with notable impacts under dual-task conditions. Conclusions: These findings underscore the effect of cognitive decline on gait and provide valuable insights for predicting gait and cognitive function deterioration in dementia, which can aid in developing fall prevention strategies.

• 한국지능시스템학회논문지
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• 제25권3호
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• pp.223-228
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• 2015

본 논문에서는 어떤 물체를 들어 올려서 전달하는 인간의 작업을 대신 수행하기 위한 인간형 로봇 팔의 어깨 및 팔꿈치 관절의 토오크 특성을 분석하고자 한다. 이러한 목적을 달성하기 위하여 인간의 일상적인 물체의 리프팅 행동을 고려하고, 단순한 구조의 어깨와 팔꿈치 관절을 갖는 인간형 로봇 팔 모델을 사용하여 어떤 물체를 다양한 경로로 이송하는 시뮬레이션을 수행한다. 이러한 시뮬레이션을 통하여 인간형 로봇 팔을 이용한 물체의 이송 작업에 있어서 요구되는 어깨 및 팔꿈치 관절의 토오크 패턴 및 범위를 사전에 파악할 수 있음을 보인다. 결과적으로, 이러한 어깨 및 팔꿈치 관절의 토오크 분석은 효과적인 로봇 팔 메커니즘 설계에 유용하게 활용될 수 있다.

• 한국콘텐츠학회논문지
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• 제16권11호
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• pp.434-443
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• 2016

안드로이드 스마트폰 사용자는 수동적으로 특정 태스크를 수행하도록 설정할 수 있으나 이러한 수동적 태스크의 설정은 불편할 뿐만 아니라 사용자의 현재 상황을 고려하지 않기 때문에 사용자가 원하지 않은 불필요한 서비스를 제공하여 사용자를 곤란하게 할 수 있다. 본 연구에서는 이러한 단점을 보완하는 상황-인지 기반의 자동 태스크 설정 어플리케이션을 설계, 구현하였다. 이 어플리케이션을 사용하면 사용자는 자신이 원하는 상황에 원하는 태스크만을 수행하도록 설정하여 상황에 맞는 서비스를 제공 받을 수 있다. 상황에 따라 원하는 태스크를 수행하도록 기술하기 위해 정형화된 구문을 설계 하였으며 안전한 태스크 설정을 위해 구문의 유효성을 자동으로 검사하는 유효성 검사기를 구현하였다.

• 대한전기학회:학술대회논문집
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• 대한전기학회 1992년도 하계학술대회 논문집 A
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• pp.365-368
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• 1992

This paper presents an approach to the design of real time task scheduling for a line controller of continuous manufacturing process automation. The line controller has multiprocessor-based architecture with shared memory and is operated by firmware. This firmware contains menu-driven software supporting real-time database management and fuction-block control language. The multitasking line control processor performs the following three functions: 1) interprets the function block control language by virtue of shared memory in the database; 2) invokes an interupt service routine as required by external hardware; 3) detects errors and notifies the user. We propose real time task scheduling method.