• Journal of Applied Reliability
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• v.9 no.3
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• pp.233-248
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• 2009

PAM(Power Amplifier Module) is the important part of a mobile phone transmitter. It amplifies the strength of signal transmitting from a mobile phone to base stations enough to resist noise or interference. In this paper reliability assessment criteria for the PAM are established in terms of quality certification test and lifetime test. The former quality certification test comprises general performance test and environmental test. Items which pass the test undergo lifetime test which guarantees the extent of mean lifetime with certain confidence.

• Communications for Statistical Applications and Methods
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• v.17 no.4
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• pp.507-513
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• 2010

Let {$X_i,-{\infty}$ < 1 < $\infty$} be a doubly infinite sequence of identically distributed and negatively associated random variables with mean zero and finite variance and {$a_i,\;-{\infty}$ < i < ${\infty}$} be an absolutely summable sequence of real numbers. Define a moving average process as $Y_n={\sum}_{i=-\infty}^{\infty}a_{i+n}X_i$, n $\geq$ 1 and $S_n=Y_1+{\cdots}+Y_n$. In this paper we prove that E|$X_1$|$^rh$($|X_1|^p$) < $\infty$ implies ${\sum}_{n=1}^{\infty}n^{r/p-2-q/p}h(n)E{max_{1{\leq}k{\leq}n}|S_k|-{\epsilon}n^{1/p}}{_+^q}<{\infty}$ and ${\sum}_{n=1}^{\infty}n^{r/p-2}h(n)E{sup_{k{\leq}n}|k^{-1/p}S_k|-{\epsilon}}{_+^q}<{\infty}$ for all ${\epsilon}$ > 0 and all q > 0, where h(x) > 0 (x > 0) is a slowly varying function, 1 ${\leq}$ p < 2 and r > 1 + p/2.

• Journal of the Korea Convergence Society
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• v.9 no.4
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• pp.461-467
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• 2018

The purpose of this study was to identify the relationship of the subjective happiness, ego-resilience and academic achievement by type of giver, taker, matcher of nursing students. First, in the result of the type of nursing students, the Taker(43.0%) was the largest, the Matcher (40.1%) was next, the Giver (16.9%) was the least. The mean score of subjective happiness, ego-resilience and academic achievement were 16.9, 94.1, 3.3, respectively. According to the personality type, the Giver reported the highest academic achievement. But the Taker reported the lowest subjective happiness, ego-resilience and academic achievement. There were significantly positive correlations between subjective happiness and ego-resilience(r=.511, p<.001), and ego-resilience and academic achievement (r=.215, p<.05).

• Journal of Convergence for Information Technology
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• v.12 no.2
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• pp.107-115
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• 2022

The purpose of this study was to investigate the level of infection control knowledge and standard precaution practice and to identify effecting factors on standard precaution practice among nurses in small and midium-sized hospitals. A cross-sectional study was conducted with a sample of 258 nurses from 7 hospitals between July and August 2021. The mean score of infection control knowledge and standard precaution practice was 7.25 and 3.61, respectively. There were significant differences in standard precaution practice according to clinical experience (r=.123, p=.047) and position (F=5.356, p=.005). Infection control knowledge and standard precaution practice were closely correlated (r=.421, p<.001). Position (β=-.187, p=.025) and infection control knowledge (β=.408, p<.001) had an effect on standard precaution practice. It could be possible to enhance the standard precaution practice through convergence education program related to infection control among staff nurses.

• Journal of the Korea Convergence Society
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• v.8 no.7
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• pp.113-122
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• 2017

The purpose of this study is to verify trust in supervisor, customer badness behavior have turnover intention influence on job embeddedness. Self-report questionnaire was completed by 188 clinical nurse May 1st to May 30th, 2016. and date analyzed using the IBM SPSS/WIN 21.0 program. As a result, The mean score of trust in supervisor is 3.20 points, customer badness behavior is 2.66 points, job embeddedness is 3.05 points, turnover intention is 3.39 points(out of 5). There were significant positive correlations between job embeddedness and trust in supervisor(r=.57, p<.001) and turnover intention(r=.19, p=.011) and negative correlations between Sacrifice sub-cale of job embeddedness and customer badness behavior(r=-.15, p=.037). The convergence factors with the effect on job embeddedness, trust in supervisor(${\beta}=.471$, p<.001), job satisfaction(${\beta}=.226$, p<.001), turnover intention(${\beta}=-.196$, p<.001), nursing satisfaction(${\beta}=-.169$, p=.005) explained 48.9% of the job embeddedness. therefore, nursing managers have to strategy increasing nurse trust in supervisor and job satisfaction and nursing satisfaction for job embeddedness and plan to lower the turnover intention at the organization level.

• KSII Transactions on Internet and Information Systems (TIIS)
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• v.15 no.11
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• pp.3875-3891
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• 2021

In this study, a Velostat pressure sensor was manufactured to develop a plantar pressure measurement system and a C#-based application was developed to monitor and collect plantar pressure data in real time. In order to evaluate the characteristics of the proposed plantar pressure measurement system, the accuracy of plantar pressure index and personal classification was verified by comparing with MatScan, a commercial plantar pressure measurement system. As a result, the output characteristics according to the weight of the Velostat pressure sensor were evaluated and a trend line with the reliability of r² = 0.98 was detected. The Root Mean Square Error(RMSE) of the weighted area was 11.315 cm², the RMSE of the x coordinate of Center of Pressure(CoP_x) was 1.036 cm and the RMSE of the y coordinate of Center of Pressure(CoP_y) was 0.936 cm. Finally, inaccuracy of personal classification, the proposed system was 99.47% and MatScan was 96.86%. Based on the advantage of being simple to implement and capable of manufacturing at low cost, it is considered that it can be applied to various fields of measuring vital signs such as sitting posture and breathing in addition to the plantar pressure measurement system.

• The Journal of the Convergence on Culture Technology
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• v.8 no.4
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• pp.205-212
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• 2022

The study was to examine the effect that perceived stress, self-efficacy, Interpersonal relationship ability affect resilience of Humanities and Social Sciences undergraduate students. Population of this study were 330 students in B city. Data were analyzed by a real number, percentage, Mean, SD, t-test, ANOVA, Pearson correlation coefficient, logistic regression analyzation using SPSS 22.0. Resilience mean of population was 3.34±0.45. Resiilence of population had a positive correlation with self-efficacy(r=.521, p<.001), Interpersonal relationship ability(r=.678, p<.001) and had a negative correlation with perceived stress(r=.234, p<.001). The factors affected to resilience of population were self-efficacy(β=.280, p<.001), Interpersonal relationship ability(β=.394, p<.001), prceived stress((β=-.191, p<.001), R² was 53.3%. This results indicated the factors that affect resilience of Humanities and Social Sciences undergraduate students.

• The Journal of the Convergence on Culture Technology
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• v.6 no.4
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• pp.391-400
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• 2020

This research examined organizational climate, multicultural practice competence, and job embeddedness of multicultural family service center and studied on the structural relationship among these variables. The study samples are 175 multicultural practitioners at 7 multicultural family service centers located at Seoul and Gyunggi-Do. The study data was analyzed with descriptive analysis, conformatiory factor analysis and structural analysis by SPSS Statistics 20.0 and Amos 21.0. The study results are as follows. First, organizational climate, multicultural practice competence, and job embededness of multicultural family service centers appeared to be posive by the mean value of 3.5 out of 5. Specifically, work reward and incentives(M=3.33) are relatively low, multicultural practice skills(3.27) are lowest among multicultural practice competence sub-factors and fitness is the highest(Mean=3.79) among job embededness sub-factors. Second, multicultural practice competence have a positive effect on job embededness(Ɓ=0.426, C.R.=5.293, p<.001), and has a mediating effect between organizational climate and job embededness. Third, organizational climate has a positive effect on multicultural practice competence(Ɓ=.206, C.R.=2.499, p<.05) and has a positive effect on job embedednes(Ɓ=0.488, C.R.=6.131, p<.001). Based on the study results, it was suggested to improve job embededness of multicultural practitioners by changing organizational climate and improving multicultural practice competence.

• Journal of Convergence for Information Technology
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• v.9 no.9
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• pp.201-209
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• 2019

A convergence study of oral health beliefs and subjective oral health awareness-knowledge factors of some university students was conducted on 216 students agreed from April 1 to June 14, 2019. Satistical analysis was performed with the mean and standard deviation, t-test, one-way ANOVA, and Pearson's correlation test. The oral health beliefs were 3.87 and oral health knowledge, oral health importance measured by 5-point, oral health interest and oral health status are 11.9, 1.50, 2.36, 2.67 respectively. The need for constant oral health education so that changes in oral health beliefs of university students and subjective oral health awareness-perception ability can be improved. Oral health education programs should be developed to suit the characteristics of university students.

• Journal of Korea Technology Innovation Society
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• v.18 no.4
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• pp.693-718
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• 2015

This paper examines the presence of network structures among convergence technologies focusing on national R&D projects performed by GRIs(Government-sponsored Research Institutes) in Korea. The dataset of convergence technology projects, which were conducted by 24 GRIs over 3 years (2011-2013), are analysed using the network analysis method. In this paper, a convergence technology project is defined as a project that consists of 2 or more then 2 technologies according to the intermediate classification of National Standard Classification of S&T. The research results confirm that convergence researches of government-sponsored research institutes are performed more actively than the entire convergence researches of national R&D projects. Furthermore, technological fields of GRIs' convergence projects are found to be much more varied. This paper also shows that in-house researches are more active than collaborative ones with external organizations. According to the network centrality analysis, it is identified that the network central characteristics of convergence technologies can be classified into internally oriented technologies and externally oriented technologies. Convergence technologies do not just mean simple mixture of different technologies. Therefore Korean government-sponsored research institutes should make more efforts to create convergence research areas which could generate new technologies and industries more effectively than simple multidisciplinary technology researches. From this perspective, some policy suggestions can be derived on the role of government-sponsored research institutes for activating convergence researches through the analysis of status of convergence researches and networks of institutions.