• 한국ITS학회:학술대회논문집
• /
• 2005.11a
• /
• pp.149-159
• /
• 2005

• Korea journal of population studies
• /
• v.28 no.1
• /
• pp.173-201
• /
• 2005

한국 중년 남녀들의 무급노동을 비교 분석하려는 목적을 가진 본 연구는 가사노동과 가족들 보기를 하는 비율과 그 시간량을 분석하고 있다. 가사노동과 가족돌보기가 여전히 여성들의 몫으로 간주된다고는 하지만 얼마나 많은 여성과 남성들이 이러한 일들을 하고 있으며, 이에 사용되는 시간이 얼마인지에 대한 구체적인 분석을 드물다. 본 연구에서는 1999년도 생활시간조사를 이용하여 한국의 40대와 50대 중년층의 가사노동과 가족돌보기를 행하는 비율과 그 시간량을 기술하는 한편, 이들의 가구, 개인, 거주지역 및 요일특성에 따른 차이를 제시하고 있다. 주요 결과로는 중년층 여자들의 경우 본 연구에서 고려한 특성과 관계없이 대부분이 가사노동을 하고 있는 반면, 남자들은 특성에 따라 가사노동을 하는 비율의 차이가 발견된다는 것이다. 또한 가사노동 시간량에서는 남자들과는 달리 여자들에게서 동거가구원이 적을수록 가사노동의 시간 또한 적음을 알 수 있다. 가족돌보기의 경우에는 가구특성이 중요하게 나타나고 있다. 특히 남자들과는 달리, 여자들 중에서 유배우자들은 무배우자들보다 가족돌보기를 하는 비율이나 시간이 많은 것으로 나타난다. 이는 남편이 아내를 돌보기보다는 아내가 남편을 수발하거나 보살피는 것이 더 보편적임을 다시 확인시켜 준다.

• Korean Journal of Cognitive Science
• /
• v.27 no.1
• /
• pp.61-99
• /
• 2016

This research investigated that participants' response time and recognition in the decision-making situation would vary according to either rational or emotional stimuli and analyzed how brain functions are related to each type of stimuli by means of fMRI. We tried to address the difference of cognitive processing between rational stimuli and emotional stimuli in the perspective of information processing theory. In order to achieve the research purpose above, we conducted two kinds of experiment studies. In study 1, subjects conducted decision-making task which selected which kind of information type the stimuli was after stimuli - rational stimuli or emotional stimuli - was randomly seen during experiment. During this experiment, we investigated the effect of each stimuli by measuring the duration from the onset time at which stimuli was shown to the response time at which subjects conducted decision-making. Furthermore, we compared the brain functions by finding out what kinds of brain areas were activated during the decision-making task. In study 2, subjects conducted recognition task at which subjects made a decision whether the stimuli was sees in the previous experiment or not. During the second experiment, we investigated the recognition effect by measuring the memory for each stimuli type. Moreover, we compared the cognitive processes during recognition by analyzing the differences of brain area functions. The results of two experiments above were as following. Firstly, regarding the response time as the effect of stimuli, we found that the effect of emotional stimuli was higher than that of rational stimuli. And regarding the recognition as the effect of stimuli, it was found that the effect of rational stimuli was higher than that of emotional stimuli. Secondly, the explanation about the characteristics of cognitive processes with the result of behavioral response by analyzing brain functions was as following. First of all, regarding the decision-making task which conducted for analyzing the effect of response time, the relatively high activated brain areas of rational stimuli were related with the functions of movement control or working memory, and the relatively high activated brain areas of emotional stimuli were connected with the functions of lingual processing.

• Korean Journal of Childcare and Education
• /
• v.9 no.2
• /
• pp.191-213
• /
• 2013

The purpose of this study was to examine the relationship pattern among paternal parenting behaviors, father involvement, parenting stress, and parenting self- efficacy. The subjects were 299 fathers of 3 to 4 year-old children at 2 child care centers and 11 kindergartens in Seoul and the Gyunggi-do area. Fathers responded to a modified version of Parenting Daily Hassles(Crinc & Greeberg, 1990), a re vised version of Parenting Sense of Competence(Gibaud-Wallston & Wandersman, 1978), and questionnaires including questions about parenting behaviors(Park, 2000) and father involvement developed by authors. Stepwise regression analyses showed that fathers' cognitive efficacy of parenting and the frequency of play involvement on weekdays significantly explained paternal 'warmth encouragement'. Also, cognitive efficacy and the frequency and time amount of play involvement on weekdays significantly explained paternal 'setting up the limitations'. Meanwhile, fathers' emotional efficacy and the amount of play time involvement on weekdays significantly explained paternal 'over-protection permission'. Finally, the cognitive and emotional efficacy of rearing and parenting stress significantly explained paternal 'rejection non-intervention'.

• Korean Journal of Cognitive Science
• /
• v.11 no.3_4
• /
• pp.1-11
• /
• 2000

This study investigated information acquisition from hypertext and the difference of searching behavior between adults and children. In experiment 1. we compared the amount of information acquisition from the hypertext to that of the printed text. The result showed that the performance in printed text was better than in hypertext. However. the performance of experienced (in the internet) participant showed no difference between the hypertext and the printed text. Experiment 2 compared the information-searching behavior of the adults and children in the hypertext environment. The results showed that adults performed the information-searching faster than children, yet there was no difference in the proportion of correct responses of the two groups. However. children who were more experienced in the internet and produced right answers to the 7th level questions in depth performed better and faster than the adults who were not. These results suggest that the experience in the internet is the most important factor in the searching of the wanted information.

• Journal of the Korea Institute of Information and Communication Engineering
• /
• v.17 no.3
• /
• pp.747-754
• /
• 2013

This paper proposed a new transponder detection method to reduce tag recognition time and simplify anti-collision process in RFID systems. In conventional systems, a transponder in detectable area is passively recognized by responding to a reader command. In addition, if there are multiple tags in the area, a collision between tags occurs by responding at the same time to a command and anti-collision process begins. In the proposed method, tags are actively recognized without any command from a reader which results to reducing a tag recognition time and simplifying anti-collision process. To compare transponder recognition time, the process of transponder recognition in conventional systems is analysed. A circuit to detect transponder directly is developed and antenna voltage variation of a reader in the appearance of multiple transponders is analysed for the implementation of the proposed method.

• Korean Journal of Food Science and Technology
• /
• v.40 no.6
• /
• pp.611-620
• /
• 2008

The principal objective of this study was to assess the effects of phosphatidylcholine (PC) and phosphatidylethanolamine (PE) extracted from egg yolk on the oxidation of tocopherol-stripped canola oil and its browning, as well as their content changes during 12 hr of heating at $180^{\circ}C$. PC and/ or PE contents in the oil were measured at 200, 500, 1,000, or 2,000 ppm. PL contents in the oil and oil browning were determined by high performance liquid chromatography (HPLC) and spectrophotometry, respectively. The oil oxidation was evaluated by the combination of fatty acid composition, conjugated dienoic acid content, and p-anisidine value. PC was degraded at a slower rate than PE during heating and the co-presence of PE reduced its rate of degradation. PE increased oil browning more profoundly than PC did. PC significantly reduced oil oxidation during heating; however, we noted a possible antagonism between PE and PC in reducing the oil oxidation. Egg yolk PC was a better antioxidant in oil oxidation during heating.

• Journal of Korean Society of Transportation
• /
• v.21 no.4
• /
• pp.7-16
• /
• 2003

Objective of this research is to analyze drivers' behaviors at signalized intersection during yellow interval. For this, deceleration rate of stopping, PRT(Perception-Response Time), and the relationship between dilemma zone and deceleration rate of stopping were surveyed at two signalized intersections located at urban area(Songtan and Suwon) and local area(Yongin) As a result, the deceleration rate of stopping at signalized intersections and a range of dilemma zone were estimated. It was found that the deceleration rate of stopping and PRT were 1.6m/sec$^2$ and 1.27sec, respectively. These values are bigger than ITE's values which have been used in our country. Accordingly, it is considered that these values should be used as a new design criteria for the traffic signal control.

• Journal of the Korea Institute of Information and Communication Engineering
• /
• v.23 no.4
• /
• pp.453-461
• /
• 2019

In this paper, we focus on the study of multi-node rendezvous on one common channel among multiple channels before transmitting in CRAHNs (Cognitive Radio Ad-hoc Networks) for the efficient use of inefficient frequency resources. Most existing researches have dealt with the channel rendezvous between two nodes. But, it can be time-consuming to apply them to three or more nodes. In addition, it cab be impossible to communicate with each other. Therefore, in this paper, we propose a Multi-Node Sequence (MNSEQ), which allows three or more nodes to rendezvous on a single common channel in a short period of time. And, CSMA/CA was applied for data exchange after rendezvous. By performance evaluation through very extensive simulations, we have demonstrated that the proposed MNSEQ outperforms the existing scheme in terms of communication completion time and transmission efficiency.

• The Journal of Korean Institute of Communications and Information Sciences
• /
• v.32 no.6B
• /
• pp.375-381
• /
• 2007

This paper focuses on the prediction algorithm among the context-awareness technologies. With a representative algorithm, Bayesian Networks, it is difficult to realize a context-aware as well as to decrease process time in real-time environment. Moreover, it is also hard to be sure about the accuracy and reliability of prediction. One of the simplest algorithms is the sequential matching algorithm. We use it by adding the proposed Cache Scheme. It is adequate for a context-aware service adapting user's habit and reducing the processing time by average 48.7% in this paper. Thus, we propose a design method of user location prediction algorithm that uses sequential matching with the cache scheme by taking user's habit or behavior into consideration. The novel approach will be dealt in a different way compared to the conventional prediction algorithm.