• Research in Community and Public Health Nursing
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• v.27 no.1
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• pp.1-8
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• 2016

Purpose: The purpose of this study was to examine the depression and cognitive function of community-dwelling older adults. Methods: 243 aged over 65 in Won-Ju in South Korea participated in this study. Data were collected from April to June 2013 through interviews. This study utilized the Geriatric Depression Scale Short Form, the Korean version of MMSE-DS (MMSE for Dementia Screening), and infirmity testing for basic health status. Descriptive statistics, ${\chi}^2$, t-test, ANOVA, $Scheff{\acute{e}}^{\prime}s$ test, and Pearson's correlation coefficient were used. Results: 75.3% of the participants belonged to the depression group, and the prevalence of cognitive impairment was 17.3%. There were significant differences in depression and cognitive function according to gender, educational level, type of insurance, subjective health, frailty, and whether to be a client of home care service. The level of depression was significantly higher and the level of cognitive functions was significantly lower in older adults in home care services than in community-dwelling older adults. Conclusion: This study is meaningful in that it included older adults in home care services to provide information to develop effective prevention programs for improving cognitive functions. The results of this study can be used to develop future community prevention and intervention.

• The Korean Journal of Community Living Science
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• v.19 no.4
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• pp.685-695
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• 2008

This study was to find out the effect of child-parent and child-peer attachment levels on the quality of the child's friendship. Participants were 355 fifth and sixth graders of three elementary schools in Jeolabukdo. The questionnaire used for this study were Inventory of Parent and Peer Attachment(IPPA) and Quality of Friendship Scale. The t-test and the regression-analysis were used for this study. According to the result, when the father attachment was higher and safer, the child's friendship was functioning more positively. However, there wasn't any meaningful relationship between the security of mother attachment and the quality of the child's friendship. When peer attachment level was higher and safer, the quality of the child's friendship was significantly higher. On the other hand, there was meaningful relationship between the security of parent attachment and peer attachment. On relationships among parent attachment, peer attachment, and the quality of the child's friendship, effects of secure father attachment and secure peer attachment were functioning meaningfully on the quality of the child's friendship. Secure peer attachment was the most effective factor functioning positively on the quality of the child's friendship among those three factors, child-parent attachment, peer attachment, and the quality of the child's friendship.

• Journal of the Korean Society for Marine Environment & Energy
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• v.18 no.2
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• pp.81-93
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• 2015

The comprehensive master plan in November 2010 on Saemangeum internal development has been released, and there is a need for complementary measures related to in-situ monitoring methods in order to acquire water temperature (T) and salinity (S) data. Thus, these data are monitored and analyzed by Korea Rural Community Corporation continuously. The purposes of current study are to evaluate the distributions of seasonal T and S, sigma-t, and stratification parameter and to compare annual stratification system in 2011 and 2012. To achieve these objectives, monthly vertical changes of T, S, and sigma-t, which are reproduced by a kriging technique, have been analyzed. In summer, the temperature difference between surface and bottom layers varies from 2 to $3^{\circ}C$, and the stratification of T is considerably weak. The stratification of S occurs abruptly within depth of EL. (-)5 to EL. (-)10 m. Therefore, stratification is induced by sudden increasing of water inflow amount due to a localized downpour during the rainy season, and these stratification processes are strongly influenced by inflowing a fresh water from watersheds in estuary environment.

• Korean Journal of Community Nutrition
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• v.14 no.5
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• pp.600-607
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• 2009

The purpose of this study was to examine if Likert scales had been properly utilized in community nutrition research. A total of 527 research articles published in the 32 issues of Korean Journal of Community Nutrition from the volume 5, issue 1 in 2000 to the volume 10, issue 2 in 2005 were screened and 55 articles were found to have utilized one or more Likert scales for the studies. Therefore, 109 Likert scales used in the 55 studies were reviewed regarding the name, statement and response items, reliability and validity check, and analysis method. The scales were mostly referred as Likert scales (60%) or Likert-type scales (27%). Some scales were found to be referred as Likert scales although they were Likert-type scales when judged based on the information given in the respective articles. However some scales couldn't be judged for the rightness of the names because the information given for the scales in the articles was not enough. About 23% of the scales consisted of items less than 6 or more than 30, and therefore found to be inappropriate. The percentage of the scales listing all the statement items in the articles was only 25%. Most of the scales (85%) included 5 response items, and the rest included 4 (7%), 7 (6%), or 3 (2%). The percentages of the scales including appropriate center and end items were only 2% and 22%, respectively. Less than half of the scales (41%) were found to have been checked for reliability and only one scale was reported to have been checked for validity. In some scales (6%), the responses were scored improperly for analysis. The responses to the scales were frequently found to have been analyzed by parametric statistics such as mean, ANOVA, t-test, and Pearson's correlation, which might be a problem depending on the size and distribution of study samples. In conclusion, there is much room for improvement in the use of Likert scales in community nutrition research.

• Journal of Korean Society on Water Environment
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• v.32 no.2
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• pp.205-215
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• 2016

In order to improve water quality in the Paldang Lake, a riparian vegetation belt, treatment wetland, and artificial floating island were designed for introduction in the upland field, the estuary of tributaries, and the section of water facing mountainous land, respectively. We synthesized vegetation information collected from a reference river and found that herbaceous, shrubby, and tree vegetation zones tended to be dominated by Phragmites japonica, Phalaris arundinacea, etc.; Salix gracilistyla, S. integra, etc.; and S. koreensis, S. subfragilis, and Morus alba, respectively. In our plan, the herbaceous vegetation zone, which is established on floodplains with a high frequency of disturbance, will be left in its natural state. A shrubby vegetation zone will be created by imitating the species composition of the reference river in the ecotone between floodplain and embankment. A tree vegetation zone will be created by imitating species composition on the embankment slope. In the treatment wetland, we plan to create emerged and softwood plant zones by imitating the species composition of the Zizania latifolia community, the Typha orientalis community, the P. communis community, the S. integra community, and the S. koreensis community. The floating island will be created by restoring Z. latifolia and T. orientalis for water purification purposes.

• Korean Journal of Microbiology
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• v.42 no.2
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• pp.103-110
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• 2006

T-RFLP analysis and clone sequencing analysis based on bacterial 16S rDNA were conducted to assess bacterial community structure and diversity in Zoysia japonica soil treated with liquid fertilizer containing amino acids(LFcAA) after spray with herbicide. The results of T-RFLP (terminal restriction fragment length poly-morphism) analysis using restriction enzyme Hae III showed that the T-RFs of various size appeared evenly in the 32 clones of KD3 and 38 clones of KD4 respectively that had been treated with liquid fertilizer containing amino acid(LFcAA) compared to 23 clones of KD2 hat had not been treated with LFcAA. The microbial com- munity structure in KD2 appeared less diverse than those in KD3 and KD4. Analysis of partial sequences for 110 clones from KDI (control), KD2 (non-treated), KD3 (LFcAA 1X), KD4 (LFcAA 2X), respectively, revealed that most bacteria were related with uncultured bacteria in a 16S rDNA sequence similarity range of 91-99% through blast search. Otherwise, the other clones were members of proteobacteria, Acidobacteria, Act-inobacteria, Sphingobacteria and Planctomyces groups. Especially in KD4, members of Alpha Proteobacteria, Rhizobiales, Sphigomonadales, Caulobacterales, Gamma Proteobacteria, the genus Pseudomonas, Betapro-teobacteria, Nitrosomonadales and genus Nitrosospira appeared to be dominant. In addition, Acidobacteria group, Actinobacteria group, Planctomycetacia and Sphingobacteria were also shown. The microbial com-munity structure in Z. japonica soil sprayed with herbicide was affected by LFcAA.

• Journal of Microbiology and Biotechnology
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• v.13 no.1
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• pp.15-21
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• 2003

Two microbial communities of activated sludge in the same municipal wastewater, but treated with different systems, were studied and compared using molecular microbiological approaches. The bacterial 16S rDNA sequences from 124 clones were analyzed, however, the majority of them were not closely related to any known species, and found to belong to 8 different phylogenetic groups and 3 different unidentified groups. The relative frequencies of each group were similar between the two microbial communities. Fingerprinting using terminal restriction fragment length polymorphism (T-RFLP) showed that the putative Nitrospira-related populations were more diverse and quantitatively higher in the KNR process system than in the other system using a conventional activated sludge process. The relationship between the bacterial community composition and the higher removal efficiency of nitrogen and phosphorus in the KNR process is discussed.

• Korean Journal of Microbiology
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• v.53 no.2
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• pp.83-96
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• 2017

A constructed sea stream in Yeongdo, Busan, Republic of Korea is mostly static due to the lifted stream bed and tidal characters, and receives domestic wastewater nearby, causing a consistent odor production and water quality degradation. Bioaugmentation of a microbial consortium was proposed as an effective and economical restoration technology to restore the polluted stream. The microbial consortium activated on site was augmented on a periodic basis (7~10 days) into the most polluted site (Site 2) which was chosen considering the pollution level and tidal movement. Physicochemical parameters of water qualities were monitored including pH, temperature, DO, ORP, SS, COD, T-N, and T-P. COD and microbial community analyses of the sediments were also performed. A significant reduction in SS, COD, T-N, and COD (sediment) at Site 2 occurred showing their removal rates 51%, 58% and 27% and 35%, respectively, in 13 months while T-P increased by 47%. In most of the test sites, population densities of sulfate reducing bacterial (SRB) groups (Desulfobacteraceae_uc_s, Desulfobacterales_uc_s, Desulfuromonadaceae_uc_s, Desulfuromonas_g1_uc, and Desulfobacter postgatei) and Anaerolinaeles was observed to generally decrease after the bioaugmentation while those of Gamma-proteobacteria (NOR5-6B_s and NOR5-6A_s), Bacteroidales_uc_s, and Flavobacteriales_uc_s appeared to generally increase. Aerobic microbial communities (Flavobacteriaceae_uc_s) were dominant in St. 4 that showed the highest level of DO and least level of COD. These microbial communities could be used as an indicator organism to monitor the restoration process. The alpha diversity indices (OTUs, Chao1, and Shannon) of microbial communities generally decreased after the augmentation. Fast uniFrac analysis of all the samples of different sites and dates showed that there was a similarity in the microbial community structures regardless of samples as the augmentation advanced in comparison with before- and early bioaugmentation event, indicating occurrence of changing of the indigenous microbial community structures. It was concluded that the bioaugmentation could improve the polluted water quality and simultaneously change the microbial community structures via their niche changes. This in situ remediation technology will contribute to an eco-friendly and economically cleaning up of polluted streams of brine water and freshwater.

• Proceedings of the KSR Conference
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• 2006.05b
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• pp.1018-1022
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• 2006

• Research in Community and Public Health Nursing
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• v.5 no.2
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• pp.216-226
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• 1994

This study attempted to analize nurse's experiences about care giver including nurse's recognition of occupational care giver's existence, the helping part of occupational care giver's activities, problems between occupational care giver and nurse, and correlations between reasons of problems and each variable. The subjects of the study are 218 nurses who are working at general hospitals. The study informations gathered by using structured questionnaire which consisted of 38 items. The reliability of the instrument was cronhach's 0.8310. The collected data was analized by spss program for the statistics of percent, t-test, ANOVA, and Pearson's correlation. The study results were as follows : 1. For the nurse's recognition of occupational care giver's existence 70.2% of nurses(153 nurses) who felt occupaitional care giver's existence was helpful. The result showed 2.20 when transfered to score. 2. Occupational care giver's activities which were helpful to nurses were in order of following : simple serving, personal hygiene, companion of talking, room arrangement, and saftey management. 3. Among 10 items of the problems which nurses having experiences with occupational care givers, 4 items were related with nurses directly. 88.4% of the reasons of the problems were due to lack of occupational care giver's eduction. 4. For the relationships of general characteristics and nurse's reason of problems there was the significant difference in the nurse's status and education. There was the significant difference showed in the group of over status of charge nurse and over college education(T=-2.08, P<0.05, T=-2.13, P<0.01) 5. Correlation between nurse's recognition of occupational care giver's existence and the problems between care giver and the nurse revealed weak relationship (r=0.2002, P<0.01). However, correlation between nurse's recognition of occupational care giver's existence and degree of occupational care giver's helping and also relationship of degree of care giver's helping and problems between these two groups were not statistically significant.