• Membrane Journal
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• v.18 no.1
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• pp.26-34
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• 2008

In this study, periodic water-back-flushing using permeate water was performed to minimize membrane fouling and to enhance permeate flux in advanced water treatment system by ceramic microfiltration. We investigated effect of water-back-flushing period (FT) and time (BT), and tried to find the optimal operating conditions. BT was fixed at 3 sec and FT was changed in $30{\sim}120$ sec to inspect effect of FT. Also, FT was fixed at 120 sec and BT was changed as $3{\sim}12$ sec at experiment of BT effect. At both two experiments, TMP was fixed at 1.52 bar, water-back-flushing pressure at 0.98 bar, feed flow rate at 0.5 L/min, and feed water temperature at $20^{\circ}C$. As the result, optimal FT was 30 sec at fixed BT 3 sec in our experimental range. It means that the more frequent back-flushing was the more effective to reduce membrane fouling. However, there were not large effects of FT due to a short BT. Then, increasing BT at fixed FT 120 sec could decrease resistance of membrane fouling ($R_f$) and increase permeate flux (J) and dimensionless permeate flux ($J/J_o$), and the most total permeate volume ($V_T$) could be produced at the maximum BT 12 sec.

• Korean Journal of Social Welfare
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• v.56 no.4
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• pp.317-343
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• 2004

The purpose of this study is to explore further understanding of variables, besides father's alcoholism, which relates to psychosocial adjustment among ADAF(adult daughters of alcoholic fathers). This study examines the relationship between father's alcoholism, family functioning, parental attachment and the psychosocial adjustment among the ADAF. From a larger sample of 463 female college students, 160 ADAF and a matched group of non-ADAF were identified to participate in the study. This survey was conducted in Seoul and Gyungi-do area. Participants completed self-report questionnaires, "The Korean Version of Children of Alcoholics Screening Test", "Inventory of Parent and Peer Attachment", "Satisfaction With Life Scale", "Self-esteem", "Beck Depression Inventory" and "Family Environment Scale". Path analyses was used to test the research question. Findings indicated that father's alcoholism had no direct effect on both the psychosocial adjustment of the ADAF and the family functioning. But father's alcoholism was significantly related to parental attachment. Family functioning was significant predictor of attachment to parents as well as psychosocial adjustment. Finally family functioning is important cause for parental attachment and psychosocial adjustment, specifically self-esteem and life satisfaction outcomes only. Therefore parental attachment was function as a mediator in the relationship between family functioning and psychosocial adjustment. In conclusion, this study showed that father's alcoholism did not predict outcome. We need to reconsider the assumption that direct link exists between adult adjustment difficulties and the presence of father's alcoholism. Implications for clinical and theoretical work with ADAF are discussed.

• Journal of Korea Port Economic Association
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• v.34 no.2
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• pp.69-82
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• 2018

The number of ships serviced at the container terminals in Busan is increasing by 2.9% per year. In spite of the increase in calling ships, there are no official records of waiting rate by the port authority. This study attempts to compare the theoretical ship waiting ratio and actual ship waiting ratio. The actual ship waiting ratio of container terminals is acquired from the 2014 to 2016 data of PORT-MIS and Terminal Operating System (TOS). Furthermore, methods and procedures to measure the actual ship's waiting rate of container terminal are proposed for ongoing measurement. In drawing the theoretical ship waiting ratio, the queuing theory is applied after deploying the ship arrival probability distribution and ship service probability distribution by the Chi Square method. As a result, the total number of ships waiting in a terminal for three years was 587, the average monthly service time and the average waiting time was 13.8 hours and 17.1 hours, respectively, and the monthly number of waiting ships was 16.3. Meanwhile, according to the queuing theory with multi servers, the ship waiting ratio is 31.1% on a 70% berth occupancy ratio. The reason behind the huge gap is the congested sailing in the peak days of the week, such as Sunday, Tuesday, and Wednesday. In addition, the number of waiting ships recorded on Sundays was twice as much as the average number of waiting ships.

• Membrane Journal
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• v.16 no.1
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• pp.31-38
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• 2006

The ceramic microfiltration system with periodic $N_2$-back-flushing was operated for treating paper wastewater discharged from a company making toilet papers by recycling milk or juice cartons. Two kinds of alumina membranes with 7 channels used here for recycling paper wastewater. The optimal filtration time interval for HC04 membrane with $0.4{\mu}m$ pore size was lower value of 4 min than 16 min for HC10 with $1.0{\mu}m$ pore size at fixed back-flushing time 40 sec, trans-membrane pressure $1.0kg_f/cm^2$ and back-flushing pressure $5.0kg_f/cm^2$. From the results of TMP effect at fixed filtration time interval and back-flushing time, the lower TMP was better on membrane fouling because high TMP could make easily membrane cake and fouling inside membrane structure. However, we could acquire the highest volume of total permeate at the highest TMP for the reason that TMP was driving force in our filtration system to treat paper wastewater. Then the permeate water of low turbidity was acquired in our microfiltration system using multi channels ceramic membranes, and the treated water could be reused in paper process.

• Cartoon and Animation Studies
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• s.36
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• pp.303-323
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• 2014

After TV Broadcasting service started, American Animation Industry changed dramatically. Through 1930th to 1940th, Major Animation Studios made every effort to adapt to new Animation production environment. Those efforts led rapid improvement of Animation again by succession of heritage in the golden age of American Animation. in spite of successful outcome, some critic like Bernard Oma blamed Animation on repeated chasing pattern, glamorized violence with exaggeration and humor caused by lack of idea. Nevertheless the decade passed by, achievement of the era still have influenced today. The animated films of the age have attractive power in comparison to today's works and Chuck Jones was a glamorous one of the age-leading masters. "Tom and Jerry" series, "Bugs Bunny", "Daffy Duck", and so on, he planned, designed characters and directed those masterpieces. In this study, episodes of "Tom and Jerry" that had been directed by Chuck Jones during 1963 and 1967 are analysed in the view point of direction style. In recently, Korean Animation Industry seems to be accumulated power for rising again by showing new animations that are adapted to new media. Thus, this study aims to give an idea for the new vision of Korean Animation through analysing Chuck Jones' Masterpieces.

• Korean Journal of Psychosomatic Medicine
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• v.23 no.2
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• pp.121-128
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• 2015

Objectives : This study developed and validated the Perceived Stigma of Delirium Scale(PSDS), which is designed to measure perceived stigma associated with delirium in patients suffering from that disorder. Methods : Based on a literature review of scales assessing stigma, a preliminary scale comprising seven items was developed. After recovering from delirium, 128 patients completed the PSDS and the Distress Thermometer (DT). Factor analysis was used to examine construct validity, and internal consistency and test-retest reliability were examined to ensure reliability. Concurrent validity was assessed using the correlation between the total scores on the PSDS and the DT. Results : Factor analysis yielded a single-factor structure from the seven candidate items. One item was excluded due to low factor loading. The internal consistency was computed and Cronbach's ${\alpha}$ was 0.85 for the total score. The overall test-retest reliability was 0.71, with items ranging from 0.58 to 0.83. The total score on the PSDS was significantly correlated with the DT score. Conclusions : The PSDS may be a reliable, valid instrument for evaluating perceived stigma in patients who have recovered from delirium. Further study of the perceived stigma by delirium patients is required to assess the implications of the PSDS for clinical practice and research.

• The Journal of Korean Academy of Sensory Integration
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• v.16 no.2
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• pp.36-49
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• 2018

Objective : The purpose of this study was to examine the validity and reliability of the Korean version of Life Balance Inventory (K-LBI) and to present the relationship between life balance and sensory processing. Methods : K-LBI was constructed through forward and backward translation. Convergent validity, internal consistency, and test-retest reliability were tested for college students. To verify convergent validity, correlation analyses between K-LBI and Korean version of Perceived Stress Scale, Korean version of Satisfaction With Life Scale, and Adult Self Report-Achenbach system of empirically based assessment were performed. Split-half reliability and test-retest reliability were also obtained for reliability verification. We performed the correlation analysis between K-LBI and Korean version of Adolescent/Adult Sensory Profile. Results : A significant correlation was found between K-LBI and the scales for convergent validity. A favorable split-half reliability and test-retest reliability were calculated. The positive correlations were found between relationship life balance and sensory sensitivity/sensation avoiding quadrants. The negative correlation was found between challenges life balance and low registration. Conclusion : This study shows that K-LBI is a valid and reliable tool in Korea. It also provides an in-depth understanding of the relationship between life balance and sensory processing.

• Phonetics and Speech Sciences
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• v.11 no.2
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• pp.65-76
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• 2019

This study aimed to primarily examine perceptions about occupational suitability made by vocational counselors for adults who stutter and associated factors. A total of 69 vocational counsellors (23 per condition) took part in this study and were randomly assigned to recordings related to three different speech conditions (fluent, less-severe stuttering, and severe stuttering versions). The participants were asked to listen to one of the three recordings and rate the speaker's communicative functioning, personal attributes, and suitability for 31 occupations, along with perceptions of the speaking demands and educational requirements of the occupations. Regarding the two stuttering conditions, it was found that suitability ratings were lower for occupations with a high speaking demand than those with a low speaking demand. In addition, the most significant factor associated with occupational suitability ratings was perceived speaking demands, followed by perceived educational requirements, and then by ratings of the speaker's personal attributes. These findings suggest that adults who stutter may face role entrapment (or occupational stereotyping) in workplace settings.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.20 no.6
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• pp.63-73
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• 2019

The purpose of this study was to investigate the prevalence of social anxiety among late School-aged Children and identify factors influencing the tendency to social anxiety. A self-report survey was conducted with primary school children who were in the 6th grades. Two hundred and seventy eight children were included in the study. The instruments utilized in this study were SASCA-K (Korean Social Anxiety Scale for children and adolescents), SES(Self-esteem Scale), CAPS(Child and Adolescent Perfectionism Scale), DSRS-C(Depression Self-Rating Scale for Children), and IPPA-R(Inventory of Parent and Peer Attachment-Revised version). Data were analyzed using descriptive statistics, t-test, One-way ANOVA, Pearson correlation and multiple regression with SPSS WIN 23.0 program. Social anxiety for the schoolchildren was positively correlated with perfectionism and depression, whereas self-esteem and attachment security was negatively correlated with social anxiety. Stepwise multiple regression analysis showed that 38.0% of the variance for social anxiety was significantly accounted for by self-esteem, self-oriented perfectionism, depression, attachment security (Father-communication). The most significant factor influencing social anxiety was self-esteem. Findings suggest that expanding health education, counseling and school-based health education programs is necessary to prevent and intervention mental problems of late School-aged Children through integrated intervention by schools, families and communities.

• The Journal of the Korea Contents Association
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• v.20 no.12
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• pp.393-405
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• 2020

The purpose of this study is to develop and validate a scale of vicarious trauma for sexual violence counselors. To this end, the concept of composition and preliminary questions of the vicarious trauma of sexual violence counselors were selected through the analysis of a content of individual interviews of sexual violence counselors and the precedent theory. Then, preliminary scale was developed after expert's evaluation of the validity of the contents. Next, as a result of a confirmatory factor analysis on the preliminary scale of 349 sexual violence counselors with experience in consulting sexual violence clients, it is confirmed that the conformity of five-factor structure was found to be favorable. As a result of convergent and discriminative validity analysis, it was confirmed that the developed scale is a reasonable tool for measuring vicarious trauma of sexual violence counselors by showing proper correlation with Secondary Traumatic Stress Scale, Counselor Burnout Inventory and Inventory of Countertransference Behavior. Furthermore, as a result of correlation analysis between professional identity and Belief in a Just World, it confirmed that it has predictive validity of the scale by indicating a high negative correlation. Furthermore, the relationship between the scale of vicarious trauma of sexual violence counselors and career background was analyzed. Finally, based on the results of this study, the significance and limitations of this study and the direction of future research were discussed.