• 한국안전학회지
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• 제16권4호
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• pp.168-174
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• 2001

For human error analysis, the structure and situation of a task should be analyzed in advance. The paper introduces Structured Information Analysis (SIA) as a task analysis method for error analysis, and delineates the result of application on the emergency procedure of Korean Standard Nuclear Plants (KSNPs). From the task analysis about emergency procedure of KSNP, total 72 specific task goals were identified in the level of system function, and 86 generic tasks were classified from the viewpoint of physical sameness of the task description. Human errors are dependent on task types so that the result of task analysis would be used as a basis for the error analysis on the emergency tasks in nuclear power plants.

• 영어어문교육
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• 제16권1호
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• pp.61-80
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• 2009

This study investigates the effects of different types of genre and tasks on college students' English listening comprehension. 104 college students were assigned to Argumentative (AG), Causal and Evaluation (CE), and Narrative (NA) group. They report their listening comprehension through gap-filling (GF), summary (ST), and multiple-choice comprehension task (MC). Results showed that different genre groups were significantly different on overall tasks. Moreover, results from each group also presented that different mean scores on each task indicated a statistical significance. Proficiency levels, higher and lower level group, showed a significant effect for the task on listening comprehension. The results of the statistical analysis, using One-way ANOVA indicated that genre significantly affects Korean college students' listening comprehension, and implied that listening comprehension sores for each genre were also substantially different. Different genre groups resented significant different in overall listening comprehension tasks.

• 대한수학교육학회지:학교수학
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• 제3권2호
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• pp.325-354
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• 2001

The study aims to develop balanced performance assessment tasks for primary school mathematics which can be implemented in the primary school easily. In order to these purposes, I suggest the types of performance assessment tasks and the framework of assessment standards for the balanced performance assessment with describing the procedures of developing tasks and rubrics. The types of task are journal writing, problem posing, constructed task, and descriptive task. In the framework of assessment standards, I suggest holistic scoring which are classified as four levels according to the degree of excellence which students perform totally concerning about the criterion of implication, reasoning, accuracy, and communication. Also I analyse the responses of children to the task “make a beautiful pattern” and suggest its assessment rubric and anchor papers for each level for illustrating the process of developing a rubric in holistic scoring. In order to reflect the viewpoints of children and their Parents concerning about the tasks, the responses in self assessment and parent assessment are analysed. Finally, methods of implementing the assessment tasks and considerations are discussed.

• Asia pacific journal of information systems
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• 제12권4호
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• pp.77-99
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• 2002

This study compares avatar-based chatting and text-based chatting. The comparison focuses on the effect of different chatting methods on user perception such as flow, social presence, and media richness. Especially the effects of avatar are examined across varying task types-work-oriented and fun-oriented. To accomplish this objective, a laboratory experiment was conducted using 80 experienced subjects. The results indicate that avatar-based chatting was more playfulness than text-based chatting in general. However, the effects of chatting methods on user perception were quite different according to the task types. There was no significant difference between avatar-based chatting and text-based chatting in the fun-oriented task, but avatar-based chatting was perceived as a more playful, focused, telepresent, and social present method in the work-oriented task.

• 영어영문학
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• 제57권6호
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• pp.911-938
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• 2011

The present study examined the effect of two variables of task complexity, reasoning demand and time pressure, each from the resourcedirecting and resource-dispersing dimension in Robinson's (2001) framework of task classification. Reasoning demand was operationalized as the two types of texts to read and summarize, expository and argumentative. Time pressure was operationalized as the two modes of performance, oral and written. Six university students summarized the two types of text orally and twenty four students from the same school summarized them in the written form. Results from t test and ANCOVA showed that in the oral mode, reasoning demand tends to heighten the complexity of the language used in the summary in competition with accuracy but such an effect disappeared in the written mode. It was interpreted that the degree of time pressure is not the only difference between the oral and written modes but that the two modes may be fundamentally different cognitive tasks, and that Robinson's (2001) and Skehan's (1998) models were differentially supported by the oral mode of tasks but not by the written mode of the tasks.

• 한국안전학회지
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• 제24권4호
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• pp.104-110
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• 2009

In this driving simulation study, the impairing effects of various types of electronic devices usage(i. e., destination search by using in-vehicle navigation system, TV watching and dialing cellular phone) during driving on front-to-rear-end collision avoidance were investigated. Percentage of collisions, driving speeds when the drivers collided, and initial reaction time for collision avoidance were analyzed and compared as the dependent measures. The results indicated that (1) any types of electronic devices usage during driving induced more serious collision-related impairment than control condition where no additional task was required, and (2) in general, destination search task appeared to impair drivers collision avoidance performance more than the other task requirements in terms of percentage of collisions and initial reaction time for collision avoidance, but TV watching induced most serious collision impact. These results suggested that any types of electronic device usage could distract drivers attention from the primary task of driving, and be resulted in serious outcome in potentially risky situation of front-to-rear-end collision. In particular, mandatory use of eye-hand coordination and receiving feedback seemed to one of essential factor leading the drivers visual attentional distraction.

• 경영정보학연구
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• 제19권3호
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• pp.105-125
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• 2017

SNS 사용과 성과의 관계에 관해서는 여러 연구가 있어 왔으나, 대부분의 선행 연구들은 작업 도중 SNS의 사용이 해당 작업의 성과에 미치는 영향을 연구하기 보다는 SNS 사용자와 비사용자의 평소 성과를 비교하여 긍정적, 혹은 부정적이라는 서로 상반된 결론을 내려왔었다. SNS의 사용이 공간과 시간의 제약 없이 일상화된 만큼, 본 연구에서는 이러한 기존 연구들을 보완하고자 실험 설계를 통하여 작업 도중 SNS의 사용과 해당 작업의 성과에 관한 탐색적 연구를 진행하였다. 이를 위해 휴식과 성과, 작업의 종류와 휴식의 종류에 대한 기존 문헌을 토대로 SNS의 역할을 긍정적, 혹은 부정적으로 단정짓지 않고 다양한 상황에서 보다 구체적으로 살펴보려 하였으며, 그 방법으로 실험 참여자의 뇌파해석, 자기 보고, 컴퓨터 기록 등 다양한 측정지표를 사용하였다. 그 결과, 간단한 작업 도중 SNS를 사용할 경우 단순 휴식을 취했을 때 보다 이후 성과가 개선되었으나, 복잡한 작업 도중 SNS를 사용한 경우에는 그 개선도가 단순 휴식과 비교했을 때 차이가 없었다. 추가 분석 결과 SNS 사용 후 성과가 개선된 참여자들의 경우, 간단한 작업을 수행한 참여자의 경우에는 SNS 사용 경험 및 몰입도가 성과에 긍정적인 영향을 미쳤으며, 복잡한 작업의 경우에는 자아 존중감 확인은 긍정적, 사회적 실재감은 부정적 영향을 미친 것을 확인할 수 있었다.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2006년도 추계학술대회 논문집
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• pp.1082-1087
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• 2006

Human factors still plays a significant role in railway accidents. The accidents often resulted from multiple causes of hardware failures and human errors. So to ensure the safety of railway operations, human error should be effectively prevented and managed. Among several factors influencing human performance, task load (or task complexity) is well known as a major contributor to human error. In order to reduce the potential of human error, a systematic analysis should be undertaken to evaluate task load and to reduce it by modifying task process and/or education&training. In this paper, we proposed a systematic framework for railway industry to perform task analysis and to evaluate task load, and applied it to KTX operational tasks. According to the application study, we identified 14 generic task types of KTX operation. And also this paper shows the quantitative task load of those generic tasks which were analyzed by NASA-TLX method.

• 로봇학회논문지
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• 제1권1호
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• pp.1-8
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• 2006

In this paper, we propose a methodology for classifying types of lower limb disability and their mechanical structure, based on extensive survey of previous developments. We also propose a task-oriented design with human-friendly and energy-efficient assistive system. The result can be used for optimal design of wearable walking-assistive robot considering the type of disability and the content of task.

• 대한인간공학회:학술대회논문집
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• 대한인간공학회 1995년도 추계학술대회논문집
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• pp.3-12
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• 1995

In this research, we investigated the effect of three visual feedback conditions (direct viewing, one-monitor viewing, and tow-monitors viewing) on the task performance of human operator in teloperation task. The three different level of task difficulties under each concitions were performed by thirty-six subjects. The result of the experiments was analysed by the task difficulties, and the measurements of performance are the task completion time and the frequency of task errors. In a teleoperator, the participation of a human operator is always required, and the man-machine interface and the operator's abilities is an important issue. Recently, the different types of sensory feedback conditions(force, vision, sound, tactile, etc) for teleoperation is a very active research area in ergonomics. Among them, visual feedback conditon is an important sense that can provide the information of task environment. Therefore, the sufficient understandings and investigation for human ability under various visual feedback conditions is required to establish the efficient man-machine interface of teleoperation. The result showed that the visual feecback conditions and the level of task difficulties have a significant effect on the task performance. For three level of task difficulties, the task completion time was the shortest under the condition of direct viewing. The number of task errors under the conditions of direct viewing and two-monitors viewing were reduced by more than half compare to that of one-monitor viewing.