• Korean Journal of Child Studies
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• v.29 no.6
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• pp.177-191
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• 2008

Prior studies were limited in the comparison of false belief tasks with desire tasks due to lack of consideration of level of executive functions. To compensate for this, executive functions were included in new preference-related and game-related tasks of conflicting desire. These tasks were administered to 246 preschoolers ranging from 2.5 to 4 years of age. Statistical analysis was by one-way ANOVA and repeated measures ANOVA. Results showed significant main effects depending on age and task type. Younger children lacked ability of executive function, such as inhibition and working memory. Older preschoolers averaged better scores on task performance, showing that it is difficult for younger children to control their own desires and select the contradicted view.

• Proceedings of the ESK Conference
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• 1995.10a
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• pp.27-36
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• 1995

원자력발전소와 같은 공정제어(process control) 체계에서 운전원의 수행도는 인터페이스에서 인간과 기계간에 이루어지는 상호작용의 신뢰도를 결정할 뿐만 아니라, 전 체 체계의 효용을 좌우하는 중요한 문제로 대두되고 있다. 이러한 체계의 설계에서는 감시제어(supervisory control) 기능의 설계요건 설정과 평가과정에서 체계의 주도자인 인간의 특성을 반영하여 직무수행의 신뢰도를 확보하는데 많은 노력을 기울고 있다. 본 연구에서는 인간-기계 체 계의 설계과정에서 운전원의 직무수행도를 보장하도록 직무요건(task requirements)을 도출 할 수 있는 방법론을 제시하고자 하였다. 직무요건을 파악하는 과정을 일반적으로 직무분석(task analysis)이라고 하는데, 적합한 직무분석 기법의 확보가 중요시된다. 본 연구에서는 우선, 기존의 직무분석 기법들을 조사하여 대표적인 기법들과 주요 기술 동향을 검토하였으며, 직무의 인지적인 측면 파악을 중심으로한 새로운 기법의 방향을 설정하였다. 설정된 방향에 따라 인지적인 측면의 분석을 강화하고 원자력발전소 운전원의 직무분석에 적합한 인지적 직무분석 기법의 기본체계 (basic framework)를 제안하였다.

• Proceedings of the Korean Information Science Society Conference
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• 2003.04c
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• pp.193-195
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• 2003

The analysis of EEG data is an important task in the domain of Brain Computer Interface (BCI). In general, this task is extremely difficult because EEG data is very noisy and contains many artifacts and consists of mixtures of several brain waves. The P300 component of the evoked potential is a relatively evident signal which has a large positive wave that occurs around 300 msec after a task-relevant stimulus. Thus automatic detection of P300 is useful in BCI. To this end, in this paper we employ a method of reference-based independent component analysis (ICA) which overcomes the ordering ambiguity in the conventional ICA. We show here. that ICA incorporating with prior knowledge is useful in the task of automatic P300 detection.

• Knowledge Management Research
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• v.6 no.1
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• pp.71-84
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• 2005

This paper is aimed at investigating the influence of the fit between PDA (Personal Digital Assistant) driven mobile technology and tasks on performance. Our research motive was adopted from the burgeoning mobile technology which can be easily observed in modem management. Fit theory has been widely applied to proved the relationship between technology and tasks. However, there are few studies about the fit between mobile technology and tasks. A the advent of the IT, mobile technology started to affect individuals' lifestyle as well as the management style of firms. For the purpose of proving those hypotheses, we collected 173 questionnaires from 20 firms such as manufacturing industry, financial business, service company, telecommunication company which deem using the PDA technology for their management. We applied factor analysis and path analysis for our experiments Results revealed that the mobile technology holds a statistically significant fit with tasks and Individual characteristics.

• 한국디지털정책학회:학술대회논문집
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• 2006.06a
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• pp.421-429
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• 2006

The purpose of this study is to confirm whether the task and system development process makes a significant influence on the system performance. The task is defined as a interdependency and system development process is defined as analysis, user participation and executive support. Field research was employed to empirically investigate the relationship among the variables. The finding of the study can be summarized as follows. The strict analysis under the task of high interdependency has a significant effect on the system performance. And high executive support is needed for the system performance under any level of interdependency.

• Journal of the Korean Society of Clothing and Textiles
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• v.20 no.5
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• pp.817-825
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• 1996

A portion of several previous studies has been that when a product is to be presented as a gift it entaials a greater expenditure of time and money than when the same product is to be used by the buyer. While this might suggest that gift-giving is an especially involving purchasing sitution, the research to date has not been consistent in its evidence to support this view. One reason for this inconsistency in findings may be suggested that different gift-giving situations show considerably different levels of givers' task involvement. The present study designs to gain some descreptive understanding of the clothing gift-giving, and to test the relationship between varibles related to clothing gift-giving and task involvement of clothing gift-giving through different gift-giving senarios. Data (N=463) were collected via a questionnaire from housewives living in Pusan, and were analyzed by factor analysis, t-test, and cannonical analysis. Results support that differences in task involvement of clothing gift -giving cause different consumer behaviors in relation to clothing gift-giving.

• Journal of information and communication convergence engineering
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• v.18 no.4
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• pp.239-244
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• 2020

This study analyzed the influencing factors of learning engagement and teaching presence in online programming practice classes. The subjects of this study were students enrolled in an industrial specialized high school, who practiced creating Arduino circuits and programming using a web-based virtual practice tool called Tinkercad. This research adopted a tool that can measure task value, learning flow, learning engagement, and teaching presence. Based on this analysis, learning flow had a mediating effect between task value and online learning engagement, as well as between task value and teaching presence. Increasing learning engagement in online classes requires sensitizing the learners about task value, using hands-on platforms available online, and expanding interaction with instructors to increase learning flow of students. Furthermore, using virtual hands-on tools in online programming classes is relevant in increasing learning engagement. Future research tasks include: confirming the effectiveness of online learning engagement and teaching presence through pre- and post-tests, and conducting research on various practical subjects.

• Korean Journal of Community Nutrition
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• v.13 no.6
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• pp.890-902
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• 2008

The purpose of this study was to develop a standardized job description for dietitians working in the public health nutrition area. Work-oriented job analysis methodology was employed for the study purpose. Subjects of 38 dietitians currently working at health centers in 2002 were recruited. Based on the focus group interview with 7 public health nutritionists and 7 professors, information about task elements was collected. Questionnaires measuring work performance and self-perception of importance of the selected task elements were administered. Reliability and validity of this instrument were tested by Chronbach's alpha and factor analysis. SAS PC package program was used for the statistical analysis. The final developed job description for public health nutritionists included 5 duties, 20 tasks and 93 task elements. The results of this study can be summarized as follows; 1) 5 duty areas are A. plan and evaluation of public health nutrition services, B. developing nutrition education materials, C. implementing nutrition services, D. networking community, and E. self development. 2) Each duty area from A to E was composed with 6, 2, 6, 4, 2 tasks, respectively. 3) Each duty area from A to E was composed with 24, 8, 38, 14, 9, and 2 task elements, respectively.

• Knowledge Management Research
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• v.9 no.4
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• pp.1-16
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• 2008

The purpose of the present study is to explain the effects of academic self-efficacy, self-regulated learning and online task value on academic achievement and learning transfer in corporate cyber education. 202 students who completed S corporate's cyber courses in 2007 and responded to all survey participated in this study. A hypothetical model was proposed, which was composed of academic self-efficacy, online task value and self-regulated learning factors as prediction variables, and learning transfer as well as academic achievement factors as outcome variables. The results of this study through regression analysis as follows. First, learners' academic self-efficacy, self-regulated learning and online task value predict learners' academic achievement significantly. Second, except for academic self-efficacy, learners' self-regulated learning and online task value predict on learners' learning transfer significantly. Third, academic achievement plays a role as mediating value in predicting academic achievement by online task. It implies that learners' academic self-efficacy, online task value and self-regulated learning which predict learners' academic achievement and learning transfer should be considered in developing strategies for the design and operation of cyber courses.

• Journal of the Korean Society of Safety
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• v.25 no.3
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• pp.123-130
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• 2010

Electroencephalogram(EEG) would be the most objective psychophysiological research technique on human errors though few research has been taken yet. This study aimed to get characteristics of human error while committing simple Odd-Ball tasks by utilizing the power spectrum technique of EEG data. Each experiment was composed of 3 tasks with different rules, and 8 young undergraduate students participated in this study as paid subjects. The result showed in the affirmative that subject and the interaction of subject and task factors were statistically significant on variation of $\alpha$ band power $P_{\alpha/(\alpha+\beta+\theta)}$ and $\beta$ band power $P_{\beta/(\alpha+\beta+\theta)}$, and that the former increasing in backward direction to Pz reflects compatibility whereas the latter increasing in forward direction to Fz reflects familiarity. Therefore it was coucluded that, since task 2 carried out in the present research requiring decoding process would be more difficult to human beings than the task merely requiring psychological recall process, task 1 and task 3 were classified into a homogenious group excluding task 2, and the ratio $\alpha$ band power to $\beta$ band power indicated enormous increase of $\alpha$ band power relative to $\beta$ band power in the cases of contra-lateral errors, especially in task 2.