• Korean Journal of Childcare and Education
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• v.10 no.2
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• pp.73-91
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• 2014

The purpose of this study was to examine the influence of the happiness of parent users of employer-supported childcare centers on their parental stress and employer-Supported childcare centers satisfaction level. It's basically meant to provide some information on how to ensure work-family reconciliation and improve the performance of employer-supported childcare centers. The subjects in this study were 206 parents who were users of employer-supported childcare centers. The findings of the study were as follows: First, the happiness and childcare centers satisfaction of the parent users of the employer-supported childcare centers were both at a higher level, and their parental stress was slightly above average. Second, there was a negative correlation between the happiness and parental stress of the parents who used the employer-supported childcare centers, and happiness was positively correlated to childcare centers satisfaction level. Third, as for the impact of the happiness of the parent users of the employer-supported childcare centers, parental stress was under the largest influence of happiness, followed by family harmony. happiness had the greatest impact on childcare centers satisfaction level, followed by interpersonal relationships. This outcome suggests that the supportive direction for parenting needs to focus on the affective dimension of promoting parents' happiness as well as focusing on the material and structural dimension.

• Journal of Digital Convergence
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• v.18 no.8
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• pp.201-215
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• 2020

We conducted the analysis using the data of the '2019 Korean Middle and Elderly Technology Acceptance Survey' to verify the comprehensive senior technology acceptance model. In this study, we examined the significant effect the relationship between behavioral intention to use the diital health devices and perceived usefulness, perceived ease of use, gerontechnology self-efficacy, gerontechnology anxiety, facilitating conditions, attitude to life and satisfaction through the structural equation. The results of the research model are as follows. First, the usefulness and ease of use had significant effects on intention to use. Second, the self-efficacy had significant effects on the intention to use. But they had negative effect. Third, perceived usefulness, self-efficacy and anxiety had significant effects on ease of use. Lastly, self-efficacy, facilitating conditions, attitude to life and satisfaction had significant effects on perceived usefulness. These findings highlight that verified the comprehensive senior technology acceptance model in Korea.

• Composites Research
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• v.28 no.6
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• pp.356-360
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• 2015

In this paper, the carbon fiber reinforced plastic is processed as the double cantilever beam in order to estimate the fracture behavior of composite and is carried out with the static analysis as the mode I. The specimen sizes are 25 mm, 30 mm, 35 mm and 40 mm. And the material property is used with carbon. As the analysis result of mode I, the adhesive part is detached latest by the small force at the specimen thickness of 25 mm. The largest force is happened at the specimen thickness of 40 mm. The defection of the adhesive interface is shown slowest at the displacement of 9.75 mm at the specimen thickness of 25 mm. And the defection is shown quickest at the displacement of 7.82 mm at the specimen thickness of 40 mm. This defection is due to the fracture of specimen. The result of this study on the defection of the adhesive interface and the reaction force due to this defection is thought to be contributed to the safe structural design of the carbon fiber reinforced plastic.

• Journal of the Korea Concrete Institute
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• v.20 no.4
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• pp.451-458
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• 2008

The near-fault ground motion (NFGM) is characterized by a single long period velocity pulse of large magnitude. NFGM's have been observed in recent strong earthquakes, Izmit Turkey (1999), Kobe Japan (1995), Northridge USA (1994), etc. These strong earthquakes have caused considerable damage to infrastructures because the epicenter was close to the urban area, called as NFGM. Extensive research for the near-fault ground motion (NFGM) have been carried out in strong seismic region, but limited research have been done for NFGM in low or moderate seismic regions because of very few records. The purpose of this study is to investigate and analyze the effect of near-fault ground motions on reinforced concrete (RC) bridge piers with lap-spliced longitudinal reinforcing steels. The seismic performance of four RC bridge piers under near-fault ground motions was investigated on the shake table. In addition, a RC bridge pier is subjected to pseudo-dynamic loadings. Test results showed that large residual displacements were observed in RC bridge piers under NFGM. RC specimens on the shake table failed at relatively low displacement ductility, compared with the displacement ductility of RC bridge pier subjected to pseudo-dynamic loadings.

• Journal of Korean Home Economics Education Association
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• v.31 no.3
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• pp.41-55
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• 2019

The present study examined the direct effects of parental support and monitoring on multicultural adolescents' school adjustment and the mediating role of ego-resilience in the relationships, under the condition of controlling foreign mothers' Korean language abilities. We used data from 1,325 1^st grade middle school students from multicultural families, who participated in the Multicultural Adolescent Panel Survey(MAPS) administered by the National Youth Policy Institute(NYPI). Structural equation modeling analysis revealed the following: parental support and monitoring directly and positively related with multicultural adolescents' school adjustment, and the direct effect of parental support on the school adjustment of multicultural adolescents was greater than that of parental monitoring. In addition, the adolescents' ego-resilience partially mediated the relationships between parental support and monitoring, and their school adjustment. Finally, we recommended the roles of parent education and home economics education in supporting school adjustment and elevating ego-resilience in multicultural adolescents.

• The KIPS Transactions:PartD
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• v.14D no.2
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• pp.265-272
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• 2007

In this paper, we implement an automated composition system of web services using hybrid techniques that merge the benefit of BPEL techniques, with the advantage of OWL-S, BPEL techniques have practical capabilities that fulfil the needs of the business environment such as fault handling and transaction management. However, the main shortcoming of these techniques is the static composition approach, where the service selection and flow management are done a priori and manually. In contrast, OWL-S techniques use ontologies to provide a mechanism to describe the web services functionality in machine-understandable form, making it possible to discover, and integrate web services automatically. This allows for the dynamic integration of compatible web services, possibly discovered at run time, into the composition schema. However, the development of these approaches is still in its infancy and has been largely detached from the BPEL composition effort. In this work, we describe the design of the SemanticBPEL architecture that is a hybrid system of BPEL4WS and OWL-S, and propose algorithms for web service search and integration. In particular, the SemanticBPEL has been implemented based on the open source tools. The proposed system is compared with existing BPEL systems by functional analysis. These comparisions show that our system outperforms existing systems.

• Journal of the Korea Society of Computer and Information
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• v.16 no.11
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• pp.25-34
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• 2011

In this paper we present an integrated design methodology for relational database based on object-oriented analysis and design. The integrated design methodology is based on business profile and has six phases. In the first phase, business use cases are identified and described by macroactivity diagrams and then the macroactivity diagrams are transformed to detailed business activity diagrams by using objects, object flows and business worker's responsibilities. In the third phase, the detailed business activity diagrams are transformed to business class diagrams that describe the static structure of the entire business system based on detailed business activity diagrams. In the four phase, the business class diagrams are transformed to class diagrams that represent the initial conceptual model of the target relational database. In the five phase, we add additional transformations on the class diagrams with generalization and specialization of associations, roles, activities, additional classes and redundant associations. Eventually, the final class diagrams are transformed to relational database schema. The methodology presented in this paper by applying that proposal for organic connection between object-oriented analysis and design methodology and relational database design methodology. And it will be able to deal with integration management. By the integrated design methodology, we can make more easily software systems based on relational database. In the case study, proposal integrated design methodology applied for a visa issuing system.

• The Journal of Bigdata
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• v.1 no.1
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• pp.67-75
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• 2016

The study analyzed big data extracted from Google and social media to identify factors related to searches on cyber bullying in Korea and America. Korea's cyber bullying analysis was conducted social big data collected from online news sites, blogs, $caf{\acute{e}}s$, social network services and message for between January 1, 2011 and March 31, 2013. Google search trends for the search words of stress, exercise, drinking, and cyber bullying were obtained for January 1, 2004 and December 22, 2013. The main results of this study were as follows: first, the significant factors stress were cyber bullying that Korea more than America. Secondly, a positive relationship was found between stress and drinking, exercise and cyber bullying both Korea and America. Thirdly, significant differences were found all path both Korea and America. The study shows that both adults and teenagers are influenced in Korea. We need to develop online application that if cyber bullying behavior was predicted can intervene in real time because these actual cyber bullying-related exposure to psychological and behavioral characteristic.

• Journal of Digital Convergence
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• v.11 no.9
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• pp.239-246
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• 2013

The purpose of this study was to identify the effects of family resilience on the positive attitudes toward a children with disabilities of non-disabled siblings. For this purpose, a survey data was collected from 110 siblings with disabled children. The general characteristics of the parent questionnaire, and the general characteristics of a child with a disability, non-disability sibling's general characteristics, be receptive attitude, consisted of family resilience, and the data were analyzed by frequency analysis, descriptive statistics, t test, ANOVA and regression analysis by SPSS 18.0. Structural equation was used for black AMOS18. The results of the measurement analysis were summarized as follows: 1. family resilience showed positive correlation with positive attitudes toward a children with disabilities of non-disabled siblings. 2. as a result of regression analysis for find out influence of family resilience on the positive attitude of non-disabled siblings, family resilience was statistically significant influence factors, which 50%, 50% explanatory power. In conclusion, these results reinforce the important of considering family context as a contributor to the positive attitudes toward a children with disabilities of non-disabled siblings, so it could be suggested that family resilience needs to be improve.

• Journal of the Institute of Electronics Engineers of Korea SD
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• v.45 no.3
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• pp.60-68
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• 2008

This work describes a re-configurable 10MS/s to 100MS/s, low-power 10b two-step pipeline ADC operating at a power supply from 0.5V to 1.2V. MOS transistors with a low-threshold voltage are employed partially in the input sampling switches and differential pair of the SHA and MDAC for a proper signal swing margin at a 0.5V supply. The integrated adjustable current reference optimizes the static and dynamic performance of amplifiers at 10b accuracy with a wide range of supply voltages. A signal-isolated layout improves the capacitor mismatch of the MDAC while a switched-bias power-reduction technique reduces the power dissipation of comparators in the flash ADCs. The prototype ADC in a 0.13um CMOS process demonstrates the measured DNL and INL within 0.35LSB and 0.49LSB. The ADC with an active die area of $0.98mm^2$ shows a maximum SNDR and SFDR of 56.0dB and 69.6dB, respectively, and a power consumption of 19.2mW at a nominal condition of 0.8V and 60MS/s.