• Journal of Korean Home Economics Education Association
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• v.30 no.4
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• pp.1-14
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• 2018

The purpose of this study was to examine the relevance of mental health and nutritional intake according to the sleep duration of Korean adolescents. This study was based on data from the 2007-2016 Korea National Health and Nutrition Examination Survey(KNHNES), including 5,489 total subjects (2,795 middle school students, 2,694 high school students). The association between sleep duration and mental health was analyzed using a logistic regression analysis, and the link between sleep duration and nutritional intake was analyzed via a generalized linear model. An analysis of sleep duration showed that middle school students had a higher average sleep duration than high school students (P<0.0001). An analysis of the relationship between sleep duration and mental health showed that middle school students had lower rates of stress perception (P<0.0001) and suicidal ideation (P=0.0005) as their sleep duration increased. High school students had 53% less suicidal ideation in the group getting 6-7 hours compared to the group getting less than 6 hours, and 37% less suicidal ideation than the group getting 7-8 hours. The link between sleep duration and stress perception was statistically significant among both middle and high school students (P for interaction=0.02). An analysis of the daily intake of major nutrients according to sleep hours found high intake of vitamin C in groups where high school students slept more than nine hours (P=0.003). The state of nutritional intake according to higher sleep duration showed statistically significant differences between higher intake of phosphorus, riboflavin, niacin, and vitamin C in Nutrient Adequacy Ratio for high school students. In conclusion, adolescents' sleep duration is associated with stress perception, suicidal ideation and nutritional intake. Therefore, this study emphasizes the mental importance of adolescent sleep and can be used as a basis for nutrition education.

• Science of Emotion and Sensibility
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• v.21 no.1
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• pp.115-128
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• 2018

Understanding the process of spatial perception plays a significant role in the design process as well as in the use of actual spaces. The perception of spatial depth can vary according to the space composition and design even there is no change in the actual size of the space. The properties of 3-dimensional space are its width, height, and depth; however, compared to the perception of spatial width and height, little research and theories exist on spatial depth perception. The reasons may be there less interest lies in the effect of spatial depth perception than that of spaciousness or height of space. This study is an investigation of the process of spatial depth perception using an eye-tracking device with stimuli developed through Computer Graphics. A total of 44 interior design major students participated in the eye tracking experiment; and they looked at three images comprised of an identical room with only changes in the rear wall condition. The results show that a significant difference in the fixation duration per stimulus exists. In addition, a significant difference exists on the fixation duration per stimulus according to the participants' answer of the deepest space. The result of this study can help identify factors for spatial depth perception, validate the assumption on it, and provide knowledge on how to acquire desirable spatial depth by utilizing the research result.

• Journal of Korean Academy of Nursing
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• v.22 no.1
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• pp.49-67
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• 1992

Most hospitalized children will experience physical pain as well as psychological distress. Preschool children's pain perception related to painful procedures can increase due to elevated anxiety and fear because they do not have understanding logical of their disease and hospitalization. In particular, they are distressed about needle - related procedures which are feared because they are seen to be a cause of bodily damage. This descriptive study attempted to identify pain perception levels in preschool children and their mothers. A self-reporting measurement and behavioral observation were used to collect the data. A total of 25 hospitalized preschool children and their mothers were investigated and data were collected about 60 painful procedures. Data collection was carried out by the researcher and two trained investigators from November first to December tenth. Three insruments were used to collect the data : Faces Pain Rating Scale(FPRS) developed by Beyer was used to measure the degree of preschool children's pain perception about painful procedures. The Visual Analogue Scale(VAS) devised by Huskisson was used to assess the degree of mothers' pain perception about their children's painful procedures. A Pain Behavioral Checklist based on the Procedure Behavior Check List by LeBaron and Zelter and modified by the researcher was used to observe behaviors of preschool children, their mothers, and nurses when the painful procedures took place. The data were analyzed by an SPSS program, and were tested using real numbers, percentages, Pearson correlation coefficient, t-test, and ANOVA. The results of this study are as follows : 1. Of all the painful procedures, the mean score for the FPRS for the preschool children's pain perception was 4.02 points, and the mean score for the VAS of mothers' pain perception was 10.92 points. 2. A Positive correlation which was statistically significant was found between the pain perception of preschool children and their mothers (r＝.53, p＜.01). that is, the higher the children's pain perception was, the higher their mothers' pain perception was. 3. The characteristics of the painful procedures related with children's pain perception as follows : The type of painful procedure was found to be statistically significant (F＝23.44, p＜.01), Among the three procedures Ⅳ starting was found to be perceived as the most painful procedures to the children. The greater the number of times that the procedure had been done, the higher the pain perception was (F＝4.44, p＜.01), and the longer the duration of the procedure, the higher the pain perception wa(r＝.30, p＜.05). Pain perception in the treatment room was higher than in the children's room(t＝6.30, ＜.01), pain perception in the mother's presence was the higher than when the mother was not present (t＝2.91, p＜.01). 4. The characteristics of the painful procedures related with the mothers' pain perception as follows : The type of painful procedure was found to be statistically significant(F＝6.01, p＜.01). Among the three procedures Ⅳ sampling was found to be perceived as the most painful procedures to the mothers. The greater the number of times that the procedure had been done, the higher the pain perception was (F＝5.95, p＜.01), and the longer the duration of the procedure, the higher the pain perception was (r＝.31, p＜.05). Pain perception in the treatment room was higher than in the children's room (t＝3.51, p＜.01), but pain perception in the mother's presence showed statistically significant no difference. 5. Of all of the 19 children's behaviors during the painful procedures, the most frequent behaviors observed Were as follows in order of frequency “crying”, “screamirig”, “facial grimacing”, “physical resistance”, Of all of the nine methers' behaviors, the most frequent by observed in “console children”, “hold children”, “applaud children”, Of all of the 11 nurses' behaviors during the painful procedures, the mast frequent in order were “smiling”, “physical restraint”, “console children”, “praise children”. 6. A positive correlation between children's and mothers' pain perception and children's behaviors was found to be statistically significant (r＝.65, p＜.01, r＝67, p＜.01). Also the relationship between children's and mothers' pain percertion, and mothers' behavior was found to be statistically significant (r＝.57, p＜. 01, 4＝.60, p＜.01). The relationship between children's pain perception and nurses' behaviors was also found to be statistically significant (r＝.46, p＜.01), but there was difference between mothers' pain perception and nurses' behaviors.

• MALSORI
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• no.38
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• pp.99-112
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• 1999

The aim of this paper is to measure the duration of Japanese 'sokuon' [t/k] and 'haneruon' [m/n] produced by Korean and Japanese native speakers. It was shown that in the case of Korean speakers, the duration of geminate of 'sokuon' was 1.5 times longer than that of a single consonant, whereas in the case of Japanese speakers, it was 2 times longer. The difference between Korean and Japanese prosodic structures appears to affect the perception and acquisition of a foreign rhythmic patternm non-existent in the speaker's native tongue. The duration of geminate of [s] was 2 times as long as a single consonant in both Korean and Japanese speakers' production. On the average, the duration of Japanese 'sokuon' [t/k/s] was 1.7 times longer than that of a single consonant in Korean speakers' pronunciation, whereas 2 times longer in Japanese speakers' pronunciation. The production of 'haneruon' by either Korean or Japanese speakers yielded a similar result to 'sokoun': 1) geminates lasted longer than a single consonant; 2) single [m] is longer than single [n]: 3) geminate of [n] is 3 times as long as single [n], whereas geminate of [m] is 2 times as long as single [m].

• MALSORI
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• no.40
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• pp.1-12
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• 2000

This paper investigated how $/\int/$ in English and German is perceived and interpreted in the loanwords in Korean. $/\int/$ in these languages does not show one-to-one correspondence in Korean: $/\int/$ in the coda position in English and German is perceived as [swi] in Korean while $/\int/$ in the onset position is perceived as [syu]. This paper examined phonetic characteristics of $/\int/$ in English and German through its acoustic analysis and attempted to figure out which factor could explain this surface distribution of [swi] and [syu]; phonological (onset vs. coda) or phonetic (coarticulation) factor. Two acoustic features of $/\int/$ in English and German were examined: duration and energy Peak frequency of the frication noise. German $/\int/$ Perceived as [swi] in Korean showed higher energy Peak frequency and longer duration than that perceived as [syu] in Korean. English iii perceived as [swi] also showed longer duration than that Perceived as [syu] in Korean but energy Peak frequency showed different behavior. English $/\int/$ showed coarticulation with the preceding vowel rather than being affected by its position in the syllable in English. This paper concludes that 1)Phonetic characteristics used are duration and energy Peak frequency of its frication noise when $/\int/$ in English and German are adopted in Korean, 2)duration is used prior to energy peak frequency, which can be used as an enhancing feature.

• Transactions of the Korean Society for Noise and Vibration Engineering
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• v.24 no.9
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• pp.731-740
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• 2014

Occupants induced floor vertical vibrations may cause other occupant's annoyance and lead to social loss. To help control such floor vibrations, several criteria have been developed mostly based on human perception tests and floor vibration tests. Floor vibration is evaluated by comparison with criteria and vibration parameters of subject floor, such as frequency, damping ratio, acceleration value, vibration duration time and occurrence frequency. Three acceleration value parameters are used in criteria; peak acceleration, rms acceleration and VDV, when a floor vibration serviceability is evaluated. Meanwhile rms acceleration and peak acceleration are adopted as vibration limit value in criteria and researches of human perception for vibration. Occupants induced floor vibration is transient rather than steady state. However, rms acceleration is not reliable parameter for evaluating transient vibration. The objective of this study is to investigate the characters of human perception level according to acceleration value parameters for vibration induced by heel impacts and walking activities.

• Research in Community and Public Health Nursing
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• v.24 no.3
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• pp.358-367
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• 2013

Purpose: This study was conducted to identify the relationship of the elder abuse perception with the caregiving stress of adult caregivers and to investigate influencing factors on them. Methods: Data were collected from 398 adults aged 30-65, and analyzed with the SPSS/WIN program. Results: In the elder abuse perception, there were differences in age, marital status, education, job, person to be taken care of, age of elderly mother, duration of caregiving, economic status and health status of elderly parents. As for the caregiving stress, there were differences in age, marital status, income, health status, relationship with the elder, person to be taken care of, economic status and health status of elder parents. Influencing factors on the elder abuse perception included caregiving stress, education, marital status, health status of elders, and economic status of parents (30%). On the caregiving stress, elder abuse perception, economic status of elders, and relationship between caregivers and elders were influencing factors (24%). Conclusion: The results of this study suggest that it is needed to develop a nursing program to prevent elder abuse and to decrease caregiving stress in caregivers. In addition, it should be considered in tandem with significant influencing factors that were found in this study.

• Journal of Korean Academy of Nursing Administration
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• v.1 no.1
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• pp.46-64
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• 1995

The 12-hour work shift can be influenced on the nurse's job satisfaction, effective personnel administration, and quality of patient care. The purpose of this study was to explore the perception on the 12-hour work shift by nurses. A total of 516 nurses were selected by convenience sampling from six general hospitals in Seoul. Based on the literature review, the questionnaire on the need of the 12-hour work shift was designed by the investigator. The data were analyzed using descriptive statistics, ANOVA and Duncan's method as post-hoc test. The results of this study are as follows ; 1. The need of 12-hour work shift The mean needs of 12-hour work shift in the nursing practice, psychological, physical, socioeconomic, and environmental perspectives were 3.05, 2.72, 2.66, 3.08, and 4.22. 2. The need of 12-hour work shift by demographic data For the nursing practice, there was a statistically significant relationship between marital status(p=.021), satisfaction on the 8-hour work shift(p=.038), the perception on the 12-hour work shift(p=.001) and the need of 12-hour work shift. For the psychological perspectives, there was a statistically significant relationship between marital status(p=.016), the perception on the 12-hour work shift(p=.0001), and the need of 12-hour work shift. For the physical perspectives, there was a statistically significant relationship between age(p=.002), marital status(p=.005), the number of children(p=.005), the duration of job career(p=.014), the job position(p=.002), the work shift(p=.030), the perception on the 12-hour work shift(p=.0001) and the need of 12-hour work shift. For the socioeconomic perspectives, there was a statistically significant relationship between the job position(0=.002), the work shift(p=.006), the perception of the 12-hour work shift(p=.002) and the need of 12-hour work shift. For the environmental perspectives, there was a statisitically significant relationship between the traffic method(p=.05), the duration of the job career(p=.026), the perception on the 12-hour work shift(p=.309) and the need of 12-hour work shift. 3. The need of 12-hour work shift by the demographic data There was a statistically significant difference between marital status(p=.014), the number of children(p=.038), the job position(p=.007), the work shift(p=.037), and the perception on the 12-hour work shift(p=.0001) for the need of 12-hour work shift.

• Korean Journal of Child Studies
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• v.27 no.4
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• pp.247-263
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• 2006

Recruited from Korean-Chinese elementary schools in Shenyang and Harbin, China, 100 children living apart from their parents and experiencing non-maternal care provided information about the separation (reason and duration of parent-child separation, present location of parents, etc.), their adjustment to separation, and their perception of attachment with their caregivers. Results showed that although the separated children adjusted positively to parent-child separation in general, over 55% of them reported loneliness. Attachment with caregiver was the most significant influential variable on children's behavior problems. Duration of separation from father was related to children's hostility/aggression and hyperactivity/attention deficit problem, while duration of separation from mother influenced children's anxiety.

• MALSORI
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• no.65
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• pp.1-11
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• 2008

This study explored the perception of transplanted Korean prosody by NE (Native speakers of English) and NK (Native speakers of Korean) listeners. The Korean utterances of various sentence types produced by NE and NK were employed to transplant the original Korean prosody contours to the Korean utterances read by NE. Then, other NE and NK were instructed to rate the transplanted prosodic components. Results showed that the interactions between the two rater groups with the three factors (e.g., transplantation types & rater groups, sentence types & rater groups, sentence length & rater groups) turned out to be meaningful. Both rater groups preferred the combined effect of transplanted prosodic components (e.g. DP, DPI) to that of individual transplantation (e.g. I, D, P). Compared to NK, NE were more sensitive to duration change than pitch change whereas NK showed equal preference to the both. In sentence types such as De, Ex, Im, and Ta, NE perceived higher similarity than NK.