• 대한가정학회지
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• 제40권11호
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• pp.119-130
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• 2002

This study investigated preschool children's script knowledge according to task situation and socioeconomic status. Subjects were seventy-eight 5-year-old children (38 low- and 40 middle-income children; 36 boys and 42 girls) recruited from three day-care centers in Seoul. Each child participated in the script knowledge assessment session. Assessment of script knowledge consisted of a picture-recognition and picture-sequencing task. Statistical methods used for data analysis were means, standard deviations, repeated measures ANOVA. Results showed that children's script knowledge scores were higher in familiar task situation than in unfamiliar task situation. Furthermore, middle-income children had higher scores of script knowledge than low-income children. Findings of this study indicate that there is the difference of script knowledge between low- and middle-income preschoolers.

• 한국의류학회지
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• 제22권2호
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• pp.267-278
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• 1998

The purpose of this study was to investigate the degree of self-monitoring (SM), the task situation and the appeal type of advertising impact on consumer behavior: in inner wear purchase. Information for the study was obtained with the use of experimental design. the experimental materials for the study were two-type inner wear advertisements (image appeal Ad/product appeal Ad). The subjects were 270, who were randomly sampled women undergraduate students in Korea, and main-test subjects (70 high SM subjects/69 low SM subjects) were assigned to the cells of 2 (self usage/gift-giving)x2 (quality appeal Ad/image appeal Ad). According to the 2x(2$\times$2) mixed factorial design, the level of SM score, the type of task situation score and the level of appeal type of advertising score were compared and tested by analysis of ANOVA. The results of experiment were as follows: 1. Experimental 1. the results showed the product preference on inner wear was the significant 3-way interaction effects among the degree of SM, the task situation, and the appeal type of advertising as well as the significant main effects of the appeal type of advertising. That is, the situation impact differs from the appeal type of advertising according to the degree of SM. 2. Experimental ll. the results showed the purchase intention on inner wear was the significant 2-way interaction effects between the appeal type of advertising and the task situation as well as the significant main effects of the appeal type of advertising and the task situation. That is, there is considerable difference in gift-giving situation rather than in self- usage situation according to the appeal type of advertising.

• 아동학회지
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• 제25권5호
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• pp.179-191
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• 2004

An emotion inference task was used to investigate children's cognitive cuing by age, cue type, and situation-emotion fit. Subjects were 41 of 3-, and 5-year-old children from two different day-care centers in Seoul and Kyonggi province. Each child was individually interviewed with pictorial tasks. 5-year-old children demonstrated more cuing, thinking, and application responses than 3-year-old children. Particularly, they showed more situation and thinking responses in situation-emotion match than in situation-emotion mismatch. 3-year-old children showed more past-oriented responses than 5-year-old children. In the interpersonal cue story, there were more situation, past-oriented and thinking responses than in the interobjective ones. The interpersonal cue story produced more situation responses in situation-emotion match than in situation-emotion mismatch.

• 한국항공운항학회지
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• 제22권4호
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• pp.42-55
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• 2014

The purpose of this research was to identify expertise in ait traffic control by using cognitive skill analysis for novices and experts in routine and non-routine situations. The result of study was to understand expertise in air traffic control tasks in terms of what cognitive processes are responsible for the expert's high performance levels. The problem solving task was difficult for novices, but performed relatively automatically by experts in a routine situation. The difficulty could indicate the presence of controlled processing. Rather than rules and strategies, novices focused more on environmental factors, which merely increase cognitive load. In a non-routine situation, novices showed that they did not categorize the information consistently and alternative resources were not available for them. Experts, however, performed automatically a task by arranging and organizing information related to problem solving components in contexts without regard to a routine and non-routine situation. Especially experts developed a stable representation and directed alternative resources for air traffic flow and efficiency. Based on the results, cognitive processes of experts could be useful to understand expert performance and analyze the learning process, which imply the necessity of developing expertise systematically.

• 대한인간공학회지
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• 제26권4호
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• pp.17-24
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• 2007

Analyses of eye tracking and think-aloud protocol data were performed to examine novice-expert differences in perceptual and cognitive aspects of air traffic controllers' situation awareness. In Experiment 1, three groups of field air traffic controllers (experts, intermediates, novices) were asked to perceive situations that were manipulated by situation complexity. In Experiment 2, protocol analysis for previous situation awareness tasks was performed to extract different task models and strategy models as a function of expertise. Then delayed-recall task and interviews about air control plans for the recalled situations were also executed. Results showed that expert controllers concentrate only on several critical features and have their own strategies to reduce mental workloads.

• 한국과학교육학회지
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• 제22권5호
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• pp.1030-1043
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• 2002

The development of cognitive psychology provides us a theoretical base from which we can obtain information about human problem solving. One purpose of this study was to investigate the effects of cognitive psychological factors on the problem solving of the two kinds of tasks (content free, content specific). And the other purpose was to find out the existence of critical situation in problem solving process. Even the items of tasks with the same logical structure and content knowledge could have different sizes of mental demand. The results were as follows. The mental demand of the problem, and the problem solver's mental capacity, might be the main factors in problem solving. Critical situation of both a group and an individual existed in the tasks that need content free knowledge (FIT 752 task). But the critical situation of a group was completely different from that of the individual in the tasks that need content specific knowledge (electric circuit task). According to the analysis of achievement for each individual in the task that need content specific knowledge, the critical situation of an individual existed in problem solving, but the critical situation of a group was not existed by were summed up the individual results.

• 한국정보처리학회논문지
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• 제6권5호
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• pp.1203-1211
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• 1999

Checkpointing is the one of fault-tolerant techniques to restore faults and to restart job fast. Checkpointing algorithms in distributed systems have been studied for many years. These algorithms can be classified into synchronous Checkpointing algorithms and asynchronous Checkpoiting algorithms. In this paper, we propose an independent Checkpointing algorithm that has a minimum Checkpointing counts equal to periodic Checkpointing algorithm, and relatively short rollback distance at faulty situation. Checkpointing count is directly related to task completion time in a fault-free situation and short rollback distance is directly related to task completion time in a faulty situation. The proposed algorithm is compared with the previously proposed asynchronous Checkpointing algorithms using simulation. In the simulation, the proposed Checkpointing algorithm produces better results than other algorithms in terms of task completion time in fault-free as well as faulty situations.

• 한국정보통신학회:학술대회논문집
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• 한국정보통신학회 2017년도 춘계학술대회
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• pp.613-614
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• 2017

최근 가정 내부에 IoT(Internet of Things)를 적용시킨 홈 IoT의 자동화 관련 연구가 진행되고 있다. 그러나 기존 IoT 자동화 시스템은 기기 동작이 센서의 임계값만을 통해 진행되기 때문에 기기간 충돌 및 간섭이 발생할 수 있으며 기기의 오작동으로 인해 작업의 효율성이 낮은 문제점이 있다. 본 논문에서는 이러한 문제점을 해결하기 위해 상황 별 작업 분류 알고리즘을 제안한다. 센서의 임계값과 현재 날짜를 의사결정트리의 분류 값으로 활용하여 가정 내부 상황에 따른 작업을 분류하고 그에 해당하는 기기를 선정하여 작업을 진행한다. 이에 따라 사용자는 가정 내부 상황 변화에 유동적으로 변화하는 서비스를 제공받을 수 있으며 기기 간 충돌과 기기의 오작동이 감소함으로써 작업의 정확도가 증대될 것으로 사료된다.

• 한국정보통신학회논문지
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• 제21권9호
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• pp.1771-1776
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• 2017

최근 IoT(Internet of Things)는 다양한 분야에 활용되어 특정 장소에 스마트 환경을 구성함으로써 사용자들에게 서비스를 제공하고 있다. 그러나 기존 시스템은 주변 환경의 변화에 따라 디바이스의 동작과 작업이 변화하지 않기 때문에 사용자는 환경 및 상황이 변화할 때마다 수동적으로 동작해야 한다. 이에 본 논문에서는 실시간 데이터 분류 기반 상황별 작업 제어 시스템을 제안한다. 센서 데이터를 서버로 전송하고 실시간, 비 실시간 데이터로 분류한 뒤 의사 결정 트리에 삽입하여 상황에 따른 작업을 식별한다. 또한 위험상황을 가스 누출 및 화재 발생과 같이 2단계로 나눠 경고 메시지를 전송한다. 이에 따라 전력의 낭비와 오작동 발생을 감소시킬 수 있으며 작업 효율이 증대된 서비스를 제공받을 수 있을 것으로 사료된다.

• 한국심리학회지 : 문화 및 사회문제
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• 제11권4호
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• pp.83-95
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• 2005

본 연구는 상황인식의 첫 번째 단계인 지각, 특히 운전상황과 관련한 대부분의 정보를 획득하는 공간지각 능력과 상황인식의 다음 단계인 이해와 예측 사이의 관계를 검토하였다. 실제 도로상황을 편집한 동영상으로 구성된 실험 재료를 이용해 재인과 예측 능력을 측정하였으며, 이 두 가지 요소들을 통합하는 과제로 운전 시뮬레이터를 조작하면서 간단한 숫자 배열 규칙에 따라 결과를 계산(예측)하는 과제를 사용하였다. 본 연구의 결과를 요약하면 다음과 같다. 첫째, 운전-관련 상황에서 오퍼레이터의 공간지각 능력이 우수할수록 실제 도로상황 재인과제 수행의 민감도가 높았다. 둘째, 공간지각 능력이 좋을수록 실제 도로상황 예측과제에서의 예측률이 높았다. 마지막으로 공간지각능력이 우수할수록 이해와 예측을 통합적으로 요구되는 숫자-계산 과제에서의 수행이 우수하였다. 본 연구 결과, 운전자 상황인식 능력의 측정방법으로 공간지각능력 검사의 활용을 제안할 수 있으며, 비교적 간단한 절차인 계산검사를 통해 상황인식의 이해와 예측을 통합적으로 살펴볼 수 있음을 시사한다.