• Restorative Dentistry and Endodontics
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• 제46권1호
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• pp.3.1-3.14
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• 2021

Objectives: This study aimed to evaluate the interface between a calcium silicate cement (CSC), Biodentine and dental adhesives in terms of sealing ability. Materials and Methods: Microleakage test: 160 standardized class II cavities were prepared on 80 extracted human molars. The cavities were filled with Biodentine and then divided into 2 experimental groups according to the time of restoration: composite resin obturation 15 minutes after Biodentine handling (D0); restoration after 7 days (D7). Each group was then divided into 8 subgroups (n = 5) according to the adhesive system used: etch-and-rinse adhesive (Prime & Bond); self-etch adhesive 2 steps (Optibond XTR and Clearfil SE Bond); self-etch adhesive 1 step (Xeno III, G-aenial Bond, and Clearfil Tri-S Bond); and universal used as etch-and-rinse or self-etch (ScotchBond Universal ER or SE). After thermocycling, the teeth were immersed in a silver nitrate solution, stained, longitudinally sectioned, and the Biodentine/adhesive percolation was quantified. Scanning electron microscopic observations: Biodentine/adhesive interfaces were observed. Results: A tendency towards less microleakage was observed when Biodentine was etched (2.47%) and when restorations were done without delay (D0: 4.31%, D7: 6.78%), but this was not significant. The adhesives containing 10-methacryloyloxydecyl dihydrogen phosphate monomer showed the most stable results at both times studied. All Biodentine/adhesive interfaces were homogeneous and regular. Conclusions: The good sealing of the CSC/adhesive interface is not a function of the system adhesive family used or the cement maturation before restoration. Biodentine can be used as a dentine substitute.

• Journal of Hospice and Palliative Care
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• 제25권2호
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• pp.85-97
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• 2022

Purpose: This study aimed to describe nurses' perceived needs and barriers to pediatric palliative care (PPC). Methods: Mixed methods with an embedded design were applied. An online survey was conducted for nurses who participated in the End-of-Life Nursing Education Consortium- Pediatric Palliative Care (ELNEC-PPC) train-the-trainer program, of whom 63 responded. Quantitative data were collected with a survey questionnaire developed through the Delphi method. The 47 items for needs and 15 items for barriers to PPC were analyzed with descriptive statistics. Qualitative data were collected through open-ended questions and analyzed with topic modeling techniques. Results: The mean scores of most subdomains of the PPC needs were 3.5 or higher out of 4, and those of PPC barriers ranged from 3.22 to 3.56, indicating the items in the questionnaire developed in this study properly reflect each factor. The needs for PPC were divided into 4 categories: "children and adolescents," "families," "PPC management system," and "community-based PPC." Meanwhile, PPC barriers were divided into 3 categories: "healthcare delivery system," "healthcare provider," and "client." The keywords derived from the topic modeling were perception, palliative, children, and education for necessities and lack, perception, medical care, professional care providers, service, and system for barriers to PPC. Conclusion: In this study, by using mixed-methods, items of nurses' perceived needs and barriers to PPC were identified, categorized, and weighted, and their meanings were explored. For the stable establishment of PPC, the priority should be given to improving perceptions of PPC, establishing an appropriate system, and training professional care providers.

• 가정과삶의질연구
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• 제25권5호
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• pp.1-14
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• 2007

The purpose of this study was to investigate the effects of group music therapy on the emotional stabilisation and Self-Efficacy of juvenile delinquents. The subjects, who were from age 15 to 19 as juvenile delinquents, received juvenile protection Order one (1) and three (3) or Order (4) and were placed in custody designated by the Gwang Ju Family Court. The 24 subjects were divided into the experimental group (N=12), and the control group (N=12) at random. The experimental group was given 14 group music therapy session for 90 minutes each, two times a week, and the control group was not given any. Emotional stabilisation and the Self-Efficacy scores for each adolescent was compared before and after the experiment. Statistical methods used for data analysis were mean, the standard deviation, and the ANCOVA. Results are as follows. The experimental group was significantly increased in emotional stabilisation compared with the control group. The experimental group was significantly decreased in aggressive behavior compared and in stress compared with the control group. The experimental group was significantly increased in self-efficacy compared, in self-confidence compared and in self control efficacy compared with the control group. These results suggest that group music therapy are positive effects on improving the emotional stabilisation and the Self-Efficacy of juvenile delinquents.

• 가정과삶의질연구
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• 제27권3호
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• pp.213-224
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• 2009

This research aims to analyze and compare the objective and subjective evaluation criteria for home appliances. In addition, this research examined the correlation between those evaluation criteria. Furthermore, consumers are divided by the level of the differences between those criteria; consumer groups whose subjective evaluation level for the quality of home appliances is greater than objective evaluation level, consumer groups whose subjective evaluation level is almost the same, and consumer groups whose subjective evaluation level for the quality of home appliances is lower than objective evaluation level, and this study investigated the differences those three groups by the socio-demographic characteristics and consumers' behavior in the stage of purchase. Results of this research could be summarized as follows. First of all, there were statistically significant between the level of the objective and subjective evaluation in the quality of home appliances. Second, when consumers purchased the expensive home appliance, imported-brand home appliance, home appliances in department store, the level of subjective evaluation level for the quality of home appliances is higher than objective evaluation level. Third, the level of satisfaction for the price, quality, AS, overall satisfaction, and the level of willingness to repurchase were higher in consumer groups whose subjective evaluation level was higher than objective evaluation level.

• Journal of Ecology and Environment
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• 제32권2호
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• pp.129-135
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• 2009

We investigated the moth diversity on an island of southern sea of Korea. We collected moths at three sites on the island of Bogildo, Wando-gun, Jeonnam using a 22-watt ultraviolet light trap from May to October, 2008, and identified a total of 272 species and 948 individuals in 13 families. Species of Noctuidae was the most abundant, with 107 species and 318 individuals, followed by Geometridae (62 species and 147 individuals) and Pyralidae (53 species and 269 individuals). The graph of the estimated species richness in Chao 1 (432.25$\pm$37.39) did not reach an asymptote, which suggests that more moth species could be identified on the island through further sampling. An arctiid moth, Miltochrista striata, was the most abundant species captured in this study. Monthly changes in moth species richness and abundance formed M-shaped curves, with peaks in early summer (June) and late summer (August). Cluster analysis of seven sites on three islands (Aphaedo Island, Sinan-gun, Oenarodo Island, Goheung-gun and Bogildo Island) divided the sites into two groups. Distances among sites and habitat types may play an important role in determining the similarities of moth faunas among sites.

• 가정과삶의질연구
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• 제30권6호
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• pp.151-166
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• 2012

The major findings are(were) as follows: 1) The Eco-friendly consumption behavior was divided into three(3) clusters, namely "The Middle Group" of eco-friendly consumption behavior(cluster I), "The Inferior group" of eco-friendly consumption behavior(cluster II), and "The Excellent Group" of eco-friendly consumption behavior(cluster III). 2) The differences in the general characteristics among the three clusters were founded on the experience of green consumption information and sources of information. 3) The characteristics of cluster I(The Middle Group) were(are) found to be eco-conscious, and aware of the consequences of behaviors, green market conditions and environmental issues. This cluster was the middle-average group. The characteristics of cluster III(The Excellent Group) were(are) found to have the willingness to pay additional costs, being aware of the social norms of the reference group, having an awareness of eco-institutional conditions, being knowledgeable about environmental policy, and finally, being personally involved in green consumption behavior. This cluster was the high-average group, whereas cluster II(The Inferior Group) was the low-average group.

• 가정과삶의질연구
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• 제29권5호
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• pp.51-73
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• 2011

Korean society with low fertility rate and high aging rate crisis has been tried very hard to find out alternatives to solve these social problems. These efforts resulted in increasing the development of education programs for the elderly. The education for the elderly have been development in various different academic fields. Therefore, this is the time to establish database for education programs which developed so far. The purpose of this study is to examine research trend in the field of education programs for the elderly in Korea. For this purpose, 62 education programs for the elderly which developed so far were analyzed. The results of this study were as followed. The topics of education programs for the elderly were divided into the following : a marriage enrichment programs for the elderly married couples, leisure programs, death education programs, health education programs, economic education programs, education programs for grandparents raising their grandchildren, etc. Based on the results of this analysis, the tasks of future research about education programs for the elderly were presented.

• The Korean Journal of Ecology
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• 제8권1호
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• pp.39-48
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• 1985

The airborne pollens were investigated by Durhan's pollen trap in Mt. Kwanak from March 1, 1984 to February 28, 1985. The observed airborn pollens were identified 22 families and 49 genera, which were divided into 27 tree pollens. Most airborne pollens were found from late-March to late-September and a few from early-November to late-February, 1985. The first observed pollen of the year was Alnus on March 5 and the last was Artemisia on Decomber 19, 1984. The maximum amount of daily airborne pollens was 823 grains/cm2 on May 16. Peak day and the maximum amount of major airborne pollens were as follows; 166 grains/cm2/day of Alnus pollen on April 4, 38 gr. of Populus on April. 13, 22 gr. of Quercus on May 10, 791 gr. of Pinus on May 26, 139 gr. on May 26 and 104 gr. of Graminae on September 6, 24 gr. of Ambrosia on Sep. 10 and 236 gr. on May 26 and 104 gr. of Graminae on September 6, 24 gr. of Ambrosia airborne pollen for one year was 12,733 grains/cm2 which were composed of 61% tree pollens and 39% herb ones. Decreasing order of pollen counts was Pinus, Alnus, Quercus and Populus in trees, and Graiminae, Artemisia and Ambrosia in herbs. Most of the airborn pollens were deposited in the day-time and a few at night, the maximum at 2∼4p.m.and the mininum at 8∼10 p.m.

• 한국보육지원학회지
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• 제12권5호
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• pp.91-113
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• 2016

This study aims to find out the significance in the experiences of voluntary participation in small groups by mothers of young children. As a result of the interviews conducted by targeting five mothers, the total was divided into three categories and six sub-factors. First, mothers voluntarily participated in small groups. Free from the role of mother and wife, they focused on their real selves, and had experiences of emotional support by forming close relationships with people. Second, mothers did not just participate in small groups as a hobby, but tried to be role models that help the growth of their children. They also tried to be the catalyst that helps create positive changes in their children and husbands. Third, mothers had social experiences, participated in economic activities as members of society or exerted their capabilities through active exchange with other people. Finally, this research hopes to provide the community with parent education-related implications that can have a positive impact on mothers themselves, their families and society.

• Journal of the Korean Wood Science and Technology
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• 제15권3호
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• pp.1-13
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• 1987

This study was carried out to investigate the variations of dimension and exterior shape of vessel elements, morphology of spiral thickening and ray-vessel pit in korean diffuse-porous woods (56 species, 18 families), The tangential pore diameter and vessel element length was increased, whereas the pore number per unit area($1mm^2$) was decreased from pith outwards. The tangential pore diameter was decreased but the length of vessel element was not changed from earlywood to latewood within an annual ring. However, the dimensional variations of vessel element was not able to be recognized among relative positions in peripheral variation. The exterior shape of vessel element could be classified into four types; Type 1 is without tail, Type 2 with ligulate tail, Type 3 with broad taper tail and Type 4 with the very short length between perforations. The distribution frequency of Type 2 and 3 was relatively high in comparision with the others. According to the prominence, distribution position and branched shape, the spiral thickenings could be divided into five types. The spiral thickenings occurred 52% in the species observed. Thus it was doubtful to consider the simple presence of spiral thickening as diagnostic index in diffuse-porous woods. The morphology of ray-vessel pit could be grouped as reticulate, scalariform, oval, linear and coalescent type. Most of species examined showed oval and linear type.