• Journal of Families and Better Life
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• v.28 no.5
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• pp.89-100
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• 2010

The purpose of this study was to develop a "Korean Childcare Teacher's Job Satisfaction Scale"(KCTJSS) and to evaluate its reliability and validity. KCTJSS was 72 items and 6 point Likert scale. Participants consisted of 211 childcare teachers by purposive sampling. Results were as follows: First, Exploratory factor analysis resulted in 40 items composed of 6 factors : The principal's childcare center operation system, working environments and welfare, social recognition, amount of work and time management, relationships with co-workers, relationships with parents. Second, the confirmatory factor analysis supported a 6 factor structure. Third, Criterion-related validity was confirmed by significant correlations of the present scale with Early Childhood Job Satisfaction Survey(Jorde-Bloom, 1989). Fourth, the reliability of factors using Cronbach's ${\alpha}$ appeared high, ranging from .83 to .93.

• The Journal of Korean Academic Society of Nursing Education
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• v.18 no.3
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• pp.446-455
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• 2012

Purpose: This study was performed to investigate the level of knowledge, self-confidence, and intention of basic life support (BLS) and identify the reason why clinical nurses lack confidence to initiate BLS at the cardiac arrest scene. Method: A cross-sectional survey was used with questionnaires which authors developed; a BLS knowledge questionnaire and a tool for measuring the level of self-confidence and intention of performing BLS. The subjects consisted of 396 nurses by convenient sampling from ten small to medium sized hospitals in Korea. Data were collected from March to August, 2008. Data were analyzed by the SPSS/WIN 14.0 program with t-test, ANOVA, and Pearson correlation coefficients. Results: The percentile score of BLS knowledge was 40.6%, self-confidence 62.1%, and intention 73.0%. Clinical career rather than BLS knowledge has a significant effect on increasing the self-confidence and intention of performing BLS. A major reason for not performing BLS was lack of confidence in operating an AED (automatic external defibrillator). Conclusion: An effective and continuous training program especially including AED for CPR should be provided with clinical nurses to increase self-confidence and intention of performing BLS and to improve the survival of cardiac arrest patients in the hospital.

• Journal of Advanced Marine Engineering and Technology
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• v.30 no.3
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• pp.438-443
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• 2006

The probe type sensor using strain gauges was used to track a container box's seam in this paper. A strain gauge has a property which the specific resistance is changed by varying of the sectional area and length when tensile and compressive stresses are generated at the strain gauge. We designed the automatic seam tracking device by attaching the probe type strain gauge sensor, motor driving slide, encorder to check the moving distance and interface card connected MPU upside the speed controllable carriage. The folded work piece for a container box is made to examine whether the device can track the seam automatically or not. Seam tracking experiments were done by changing the carriage moving speed at 300. 400. 500. 600[mm/min] each as the voltage of side track was 2.5[V]. We compared and analyzed the sampling data which is obtained by output voltage of strain gauge sensor and rotary encorder pulse every 100 [m/s]. The welding experiments were performed by using $CO_2$ welding machine about the carriage moving speed that has good seam tracking condition in the seam tracking experiments above. And we compared the seam tracking status.

• JSTS:Journal of Semiconductor Technology and Science
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• v.9 no.3
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• pp.160-165
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• 2009

A 12b 2 MS/s cyclic ADC processing 3.3 Vpp single-ended rail-to-rail input signals is presented. The proposed ADC demonstrates an offset voltage less than 1 mV without well-known calibration and trimming techniques although power supplies are directly employed as voltage references. The SHA-free input sampling scheme and the two-stage switched op-amp discussed in this work reduce power dissipation, while the comparators based on capacitor-divided voltage references show a matched full-scale performance between two flash sub ADCs. The prototype ADC in a $0.18{\mu}m$ 1P6M CMOS demonstrates the effective number of bits of 11.48 for a 100 kHz full-scale input at 2 MS/s. The ADC with an active die area of $0.12\;mm^2$ consumes 3.6 m W at 2 MS/s and 3.3 V (analog)/1.8 V (digital).

• Journal of Korean Society of Water and Wastewater
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• v.29 no.6
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• pp.693-702
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• 2015

The objective of this study is to investigate and evaluate that a roadside tree root intrudes sewer network systems. Two approaches were performed to assess the characteristics of tree root intrusion. First, the characteristics of tree roots that had invaded sewers were directly observed by means of closed-circuit television inspection robot. Second, the intrusion proportions of tree root into rain gutters in the sampling area were investigated. As tree species of low intrusion proportions, the results indicated that Ginkgo biloba Linn. and Acer buergerianum Miq. were 1.7% and 4.3%. On the other hand, tree species of high intrusion proportions were Metasequoia glyptostroboides Hu et Cheng, Ulmus davidiana var. japonica Nakai and Zelkova serrata Makino as 22.2%, 20.4%, and 17.6% respectively. In particular, sewers and gutters around Zelkova species should be the focus of maintenance work because of the high proportion of these trees on roadsides.

• 한국전산유체공학회:학술대회논문집
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• 2008.03b
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• pp.113-116
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• 2008

This work presents numerical optimization for design of staggered arrays of dimples printed on opposite surfaces of a cooling channel with a fast and elitist Non-Dominated Sorting of Genetic Algorithm (NSGA-II) of multi-objective optimization. As Pareto optimal front produces a set of optimal solutions, the trends of objective functions with design variables are predicted by hybrid multi-objective evolutionary algorithm. The problem is defined by three non-dimensional geometric design variables composed of dimpled channel height, dimple print diameter, dimple spacing and dimple depth to maximize heat transfer rate compromising with pressure drop. Twenty designs generated by Latin hypercube sampling were evaluated by Reynolds-averaged Navier-Stokes solver and the evaluated objectives were used to construct Pareto optimal front through hybrid multi-objective evolutionary algorithm. The optimum designs were grouped by k-mean clustering technique and some of the clustered points were evaluated by flow analysis. With increase in dimple depth, heat transfer rate increases and at the same time pressure drop also increases, while opposite behavior is obtained for the dimple spacing. The heat transfer performance is related to the vertical motion of the flow and the reattachment length in the dimple.

• The Journal of Asian Finance, Economics and Business
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• v.7 no.9
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• pp.593-602
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• 2020

The purpose of this study is to examine and analyze the effect of human capital supply chain on the firm performance mediated by innovation culture and innovation process on small- and medium-sized construction enterprises (SMEs) in Indonesia. A survey has been distributed to all construction SMEs that have direct involvement in construction work (contractors and subcontractors). The construction SMEs including medium- and small-scale construction services in three Provinces, namely, the special region of Yogyakarta, East Java, and Central Java. Through purposive sampling technique, primary data is collected by giving a questionnaire to the owner/manager of construction SMEs. The target sample in this study was 200 respondents who have been operating for a minimum of two years. 154 valid questionnaires could be processed. Data analysis uses structural equation modeling with AMOS 24. The results of the study conclude that there is a positive effect on human capital supply chain on firm performance mediated by innovation culture and innovation process, while innovation culture does not affect firm performance. In sum, the innovation culture mediates the relationship between human capital supply chain and firm performance, and the innovation process mediates the relationship between human capital supply chain and firm performance.

• Journal of Korean Academy of Nursing
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• v.29 no.6
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• pp.1336-1354
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• 1999

Researchers have rarely explored menopausal experience in the context of the totality of women's lives, subsequently making the picture of menopause incomplete, discrete and fragmented. Respecting the totality of women's lives, this study addressed how a vulnerable group of women-low income Korean immigrant women-experience menopause within a context of multiple transitions. This is a cross-sectional study using methodological triangulation. A sample of 119 first-generation Korean immigrant women aged 40 to 60 years, who were in low-income jobs, was recruited using convenience sampling methods. From the total sample, 21 peri-or post-menopausal women were recruited for in-depth interviews following the collection of the survey data. Questionnaires, short interviews, and in- depth interviews were used to collect data. The quantitative data were analyzed using descriptive and inferential statistics. Thematic analysis was used to interpret interview data. The findings indicate that menopause was given the lowest priority amidst women's multiple and demanding roles within a gendered multiple transitional (immigration, work and menopause) context. The lack of language clarity to describe women's experience, cultural background, inadequate knowledge, and lack of social supports made menopause hidden, invisible, and inaudible. Conclusions and implications for nursing practice are guided by the goal of understanding women's experiences and meanings of menopause and supporting women through reflecting these experiences into their health care.

• Journal of Multimedia Information System
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• v.3 no.2
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• pp.35-42
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• 2016

Electrocardiogram (ECG) signal gives a clear indication whether the heart is at a healthy status or not as the early notification of a cardiac problem in the heart could save the patient's life. Several methods were launched to clarify how to diagnose the abnormality over the ECG signal waves. However, some of them face the problem of lack of accuracy at diagnosis phase of their work. In this research, we present an accurate and successive method for the diagnosis of abnormality through Discrete Wavelet Transform (DWT), QRS complex detection and Support Vector Machines (SVM) classification with overall accuracy rate 95.26%. DWT Refers to sampling any kind of discrete wavelet transform, while SVM is known as a model with related learning algorithm, which is based on supervised learning that perform regression analysis and classification over the data sample. We have tested the ECG signals for 10 patients from different file formats collected from PhysioNet database to observe accuracy level for each patient who needs ECG data to be processed. The results will be presented, in terms of accuracy that ranged from 92.1% to 97.6% and diagnosis status that is classified as either normal or abnormal factors.

• The Korean Journal of Food & Health Convergence
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• v.4 no.2
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• pp.1-5
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• 2018

Background: the self-regulating in adolescent's smokers as prevention is one of the lines of the work team in the consultation of Ceasing Tobacco. Objective: to identify the factors of risks that impact in the self-regulation to prevent the tobacco in adolescents. The investigation embraced one period from March 2017 to September 2018. Method: a descriptive study of traverse court was used. Registered to 31 students for sampling intentional non probabilistic, of an universe of 50 adolescent students. It was used empiric methods; clinical histories, interviews structured and the questionnaire. Conclusion: the female sex prevailed, where 54,8 % between the 12 to 19 years of age. Results: the incidence the factors of risks that impact in the self-regulation to prevent the tobacco in adolescents are the group contagion with 54,7 %, family problems for a 29,0 % and situational depression with 16,1 %, where it is necessary the self-regulation that should have the adolescents in the life.