• 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 Dental Rehabilitation and Applied Science
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• v.26 no.1
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• pp.21-32
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• 2010

The convergence angle of a prepared tooth is a very important factor in the retention and resistance of a crown restoration. But various intraoral environments and clinician's techniques make it difficult to obtain the ideal inclination. Therefore, in this study, clinical convergence angle of a prepared tooth was investigated. The data was collected from the patient models of prosthodontic residents and the patient models of general practitioners. The images of mesiodistal and buccolingual surfaces were taken with a digital camera to evaluate the convergence angle on 'ImageJ' program. The images were classified according to the criteria (1. Clinician group, 2. Position in the dental arch, 3. The purpose of abutment preparation)and then analyzed. The mean convergence angle of a prepared tooth for Korean clinicians was $15.02^{\circ}$ (${\pm}10.13^{\circ}$). 1. It was significant in the convergence angle between the general practitioner group and the prosthodontic resident group(p<0.05). 2. It was significant between the mesiodistal and buccolingual surface in the the prosthodontic resident group(p<0.05). 3. For the general practitioner group, it was significant when anteriors and premolars were compared with molars(p<0.05). For the prosthodontic resident group, it was significant when anteriors and premolars were compared with molars (p<0.05). 4. When divided into upper and lower arches, for the general practitioner group, it showed significant difference in the buccolingual aspect(p<0.05). Also in the prosthodontic resident group, it showed significant difference in the buccolingual aspect(p<0.05). 5. Dividing left and right sides of the arches, there was no significant difference in the general practitioner group and the prosthodontic resident group(p>0.05). 6. In the general practitioner group, it was significant in the mesiodistal axial convergence angle of single crown abutment and 3 unit bridge abutment(p<0.05). In the prosthodontic resident group, it was significant in the mesiodistal and overall axial convergence angle of single crown abutment and 3 unit bridge abutment(p<0.05). Clinical convergence angle of prepared tooth in Korea was included in agreement with other studies investigating convergence angle that ranged from 10 to 22 degrees, achieved in clinical practice.

• Journal of Digital Convergence
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• v.10 no.1
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• pp.399-405
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• 2012

The purpose of this study was to compare the shoulder stabilizer muscle activity during a push up plus on a different conditioning surface. Eighteen healthy volunteers were tested. Surface EMG was recorded from the upper trapezius(UT), pectoralis major(PM), and serratus anterior(SA) using surface differential conditions. Measurements were performed for 7 days. The mean root mean square (RMS) of EMG activity was calculated. A one-way repeated measures analysis of variance was performed to compare RMS normalized values. The UT and PM did not show significant differences of electric activation amplitude in relation to different surface conditions(p>.05). However, the SA showed greater mean electric activation amplitude values on the push up plus exercise on a upper and lower unstable surface(p<.05). These results suggest that to improve SA EMG activity is more useful when performed on a upper and lower unstable surface conditions than on a stable surface conditions.

• The Journal of the Convergence on Culture Technology
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• v.6 no.2
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• pp.145-152
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• 2020

The objective of this study was to examine the degree of job stress and drinking levels among emergency room nurses and to investigate the association between these variables. Data were collected using self-reported questionnaires completed by 106 nurses working in emergency room of hospitals from 3 different cities. The collected data were analyzed using SPSS 21.0 program. The results showed that the mean job stress score was 45.93±6.81 points, while 18.9% of the subjects were in the disordered alcohol use group. Differences in drinking levels were found according to the work experience of the nurses (χ²=8.249, p=.041), while significant differences in job stress scores were found according to marital status (t=-2.72, p=.008) and desire to continue working (t=-2.272, p=.025). There was a significant correlation between job stress and drinking level (r=-.147, p= .000). Measures to lower job stress among emergency room nurses are need based on the findings in the study and it is expected that decreasing the drinking level of nurse would contribute to this.

• Journal of Convergence for Information Technology
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• v.8 no.4
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• pp.55-62
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• 2018

This is a primitive experimental study to find effects of 10 times classwide peer tutoring on academic achievement, self-leadership and interpersonal ability of nursing students. According to the results of Mann-Whitney U and Kruskal-Wallis test using SPSS/WIN 19.0, the motive of admission was the factor affecting the most mean ranks related to general characteristics. There were significant differences between academic achievements, cognitive strategy, and promoting relationships(p<.001; p=.020; p=.040), and there was a positive correlation between self-leadership and interpersonal ability(r=.296, p=.041) in Wilcoxon Signed Ranked test. As results of this study, the classwide peer tutoring could be applied in nursing classes for enhancing students' competence, but the researcher suggests further researches with wider range of subjects and setting control group.

• Journal of the Korea Convergence Society
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• v.12 no.9
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• pp.323-330
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• 2021

Purpose: This study aimed to identify the maternal functioning and related factors among early postpartum women. Methods: In this cross-sectional study, 243 women recruited from three women's hospitals. Participants completed a structured questionnaire in on-line or off-line between 6 and 12 weeks postpartum. Data were analyzed using descriptive statistics, the t-test, analysis of variance, Pearson correlation coefficients, and stepwise multiple regression with SPSS for Windows ver. 25.0. Results: The mean score for the maternal functioning was 73.28±16.78 out of 120 points. Maternal functioning was associated with postpartum depression (r=-.57 p<.001), and spousal and family support (r=.54, p<.001). According to the stepwise multiple regression, postpartum depression (β=-0.43, p<.001), spouse and family support (β=0.39, p<.001), employment (β=0.12, p=.012) and delivery method (β=-0.10 p=.026) had a significant relationship with the maternal functioning among postpartum women. These variables had an explanatory power of 49.0% for maternal functioning. Conclusion: It is necessary to develop and implement a maternal intervention program focused on alleviating postpartum depression and improving spouse and family support. This study will be the starting point for various studies by identifying the maternal functioning of postpartum women for the first time in Korea.

• 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 information and communication convergence engineering
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• v.8 no.3
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• pp.281-288
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• 2010

This paper investigates the performance of IEEE 802.11p wireless access in vehicular environments (WAVE) system in small-scale fading models reported by Georgia Institute of Technology (Georgia Tech). We redesign the small-scale fading models to be applied to the computer simulation and develop the IEEE 802.11p WAVE physical layer simulator to provide the bit error rate and packet error rate performances. Moreover, a new channel estimator using decision directed channel estimation and linear minimum mean square error smoothing is proposed in order to improve the performance of the conventional least square channel estimator using two identical long training symbols. The simulation results are satisfactorily coincident with the scenarios of Georgia Tech report, and the proposed channel estimator significantly outperforms the conventional channel estimator.

• The Transactions of the Korean Institute of Electrical Engineers P
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• v.64 no.4
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• pp.267-272
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• 2015

Active noise control (ANC) is a method of cancelling a noise signal in an acoustic cavity by generating an appropriate anti-noise signal via canceling loudspeakers. The continuous progress of ANC involves the development of improved adaptive signal processing algorithms, transducers, and DSP hardware. In this paper, the convergence behavior and the stability of the FxLMS algorithm in ANC systems with real-time implementation is proposed. Specially, The advanced DSP H/W with dual core(DSP+ARM) and API(application programming interface) S/W programming was developed to improve the real-time implementation performance under the FxLMS algorithms of input noise such as road noise environment. The experimental results are found to be in good agreement with the theoretical predictions.

• The Transactions of the Korean Institute of Electrical Engineers P
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• v.62 no.3
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• pp.111-116
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• 2013

Noise problem that occurs on the road is raising a lot of problems in the economic, social and environmental aspects. The objective of this paper is to propose ANC(active noise cancellation)-based road traffic noise reduction algorithm-model which can reduce noise by generating frequency opposed to noise sources to improve and complement the problem that existing physical form of a noise barrier. In this paper, we measured the noise characteristic from collection of two difference car noise also ANC simulation has been performed by using road traffic noises input. In order to compare the control performance, we performed noise reduction simulation of ANC by filtered-X LMS algorithm and delayed control signal injection. As a result of this simulation, we confirmed that convergence performance and noise decrease effect to the filtered-X LMS algorithm by inputting the road traffic noise.