• Journal of the Korea Convergence Society
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• v.11 no.4
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• pp.173-177
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• 2020

In this study, the side doors of mid-size sedan vehicles of models A and B which are currently prone to rollover accidents are compared with each other by the structural analyses. As a result of the structural analysis, both models showed the maximum deformation at the point of overturning or impact load, and the model A of the two models was able to withstand greater impact load compared to the model B. In addition, the maximum stress happened at the door edge, and model B was 2.5 times more stressed than model A. In the accident of a crash, model A, which has the smaller maximum stress, is able to withstand greater impact loads than model B. Since model B has a larger deformation than model A, it is considered to be more dangerous than model A in the side impact accident. By applying the impact analysis of automotive side door by the class of vehicle, the study result at this paper is considered to be favorable as the convergent research material which can apply the aesthetic design.

• International Journal of Aeronautical and Space Sciences
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• v.14 no.2
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• pp.122-132
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• 2013

In this research the development of unstructured grid discretization solution techniques is presented. The purpose is to describe such a conservative discretization scheme applied for experimental validation work. The objective of this paper is to better establish the effects of mesh generation techniques on velocity fields and particle deposition patterns to determine the optimal aerodynamic characteristics. In order to achieve the objective, the mesh surface discretization approaches used the VLA prototype manufacturing tolerance zone of the outer surface. There were 3 schemes for this discretization study implementation. They are solver validation, grid convergence study and surface tolerance study. A solver validation work was implemented for the simple 2D and 3D model to get the optimum solver for the VLA model. A grid convergence study was also conducted with a different growth factor and cell spacing, the amount of mesh can be controlled. With several amount of mesh we can get the converged amount of mesh compared to experimental data. The density around surface model can be calculated by controlling the number of element in every important and sensitive surface area of the model. The solver validation work result provided the optimum solver to employ in the VLA model analysis calculation. The convergence study approach result indicated that the aerodynamic trend characteristic was captured smooth enough compared with the experimental data. During the surface tolerance scheme, it could catch the aerodynamics data of the experiment data. The discretization studies made the validation work more efficient way to achieve the purpose of this paper.

• Design & Manufacturing
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• v.14 no.2
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• pp.62-68
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• 2020

Recently, research on precise parts required in aerospace, ship, and automobile industries has been actively conducted. In this paper, electron beam drilling machining parameters were selected and experiments were conducted to compare processing characteristics analysis according to machining parameters through machining experiments of a vaporization amplification sheet to which STS 304 was applied. Also, as a result of measuring the machining. As the thickness gradually increased, it was confirmed that the electron beam could not reach the vaporization amplification sheet and thus melted on the surface of the material. As a result of the experimental analysis, it was analyzed that the vaporization explosion reaction of the vaporization amplification sheet was not normally performed due to the working distance (WD) according to the material thickness.

• Journal of Convergence for Information Technology
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• v.8 no.5
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• pp.189-197
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• 2018

The study aims to examine the availability of figure therapy in convergence perspective by verifying the effectiveness of the figure therapy programs on the psychological exhaustion and ego resilience of counselors. For the purpose, this study examine the changes of psychological exhaustion and ego resilience of participated counselors from 11 clients of general counseling center in 2 areas of Gyeonggi through the independent sample t-test and the corresponding sample t-test based on group figure therapy programs. As a result, there was a slight difference in the mean value of psychological exhaustion, and the mean of ego resilience has increased. In addition, the mean value of confidence and interpersonal efficiency, which is a sub factor of ego resilience, has increased and showed statistical significance. Based on the result, the study will be applied as a basic data of developing various figure therapy programs to improve the self resilience of counselors.

• Journal of the Korea Convergence Society
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• v.7 no.5
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• pp.59-68
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• 2016

The purpose of this study is to understand the effect of spirituality of nursing college student on spiritual wellbeing. We collected data by conducting structural survey to 148 freshmen from 2 nursing college from October to December, 2014. The collected data was analyzed through SPSS 18 program by mean, SD, t-test, ANOVA, Pearson correlation, and multiple regressions. As for the correlation between subdivisions of spirituality and spiritual wellbeing, the result showed statistically significant positive relationship in all of the subdivisions. As for the multiple regression analysis result, the variables influencing religious wellbeing such as religious status, daily devotion, and inner resource of spirituality had 65.1% of explanation power, while the variables influencing existential wellbeing such as meaning of life, inner resource had 59.3% of explanation power. We expect this study will provide with base data to develop the improvement program of spiritual wellbeing considering the quality of nursing college student.

• Journal of the Korea Convergence Society
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• v.8 no.10
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• pp.215-223
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• 2017

This article has tried to analyse the effect of the corporate earning return tax empirically through analysis on the impact of previous internal reservation on the dividends rate of the current year. In addition to this, this article has tried to the effectiveness of government policies with leverage ratio as a moderating variable. Moreover, DRF and GBM model were used to see the effect again. As a result of the actual proof analysis, OCF, ROE, FOR have a significance level of 99% in model1, model2, model3. However, ADV and MSE has appeared not to be meaningful in all models. In the result of DRF and GBM model for convergence was higher than GBM in depth and leaves. However, when it comes to a model explaining capability, GBM high than DRF. The further study will be required to examine the effect of government policy by time series analysis in the period of enforcement of the reflux tax, from 2015 to 2017.

• Journal of the Korea Convergence Society
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• v.11 no.2
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• pp.45-51
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• 2020

Dental hygienists students are required to be able to interact and maintain relationships with dentists and patients. Therefore, the purpose of this study was to identify the relations affecting interpersonal competence of some dental hygiene students, and to provide the necessary data for nurturing competent dental hygienists. The survey was conducted on 293 dental hygiene students in M university. The level of significance was .05 and the statistical program was SPSS win 25.0. As a result of interpersonal competence according to general characteristics and interpersonal characteristics, significant results were found in the degree of human relations and new environmental adaptability. As a result of correlation analysis between subvariables of interpersonal competence, all showed significant positive correlation. Factors affecting interpersonal competence showed significant positive effects on the degree of human relationship(p=.019) and the new environmental adaptability(p=.001). Interpersonal competence are important in the clinic. Therefore, a convergent analysis of the factors influencing is required.

• Journal of the Korea Convergence Society
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• v.8 no.5
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• pp.19-28
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• 2017

In this paper, we propose a method to reduce the difference in image characteristics when multiple camera images are captured for virtual space production. Sixty-four images were used by cross-mounting eight bodies and lenses, respectively. Image analysis compares and analyzes the standard deviation of the histogram and pixel distribution values. As a result of the analysis, it shows different image characteristics depending on the lens or image sensor, though it is a camera of the same model. In this paper, we have adjusted the distribution of the overall brightness value of the image to compensate for this difference. As a result, the average deviation was the maximum of (Indoor: 6.89, outdoor: 24.23), we obtained images with almost no deviation (Indoor: maximum 0.42, outdoor: maximum: 2.73). In the future, we will study and apply more accurate image analysis methods than image brightness distribution.

• Journal of the Korea Convergence Society
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• v.9 no.1
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• pp.9-20
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• 2018

The purpose of this paper is to analyze the effect of corporation internal reservation on R&D investment. It is to find how much effect the reflux tax has achieved through empirical analysis. In addition, education training expense was taken as a moderating variable to find the effectiveness of government policy. Furthermore, the study looked through the effect once again by using GMB model. According to the result counted by regression analysis, it could be concluded that the effect of both moderation and intervention had a significant effect and the variable of interest cost and welfare & benefit cost in model 1, 2 and 3 had a meaningful impact at the level of 99%. On the other hand, the previous corporate internal reservation failed to show any significant result in all types of models. Even in GBM model of convergence level applied to additional analysis, similar results came out.

• Journal of the Korea Convergence Society
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• v.9 no.5
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• pp.151-156
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• 2018

In this study, CFRP and metal or nonmetal were bonded with adhesive and the fracture study on this material was carried out. CFRP at the upper side of specimen and metal or nonmetal were assigned at the lower side of specimen by using DCB specimen as the analysis condition. And it was desribed that the structural adhesive were bonded between both upper and lower sides. As this analysis result, the least equivalent stress was shown at the specimen bonded with aluminium. The maximum shear stress was shown to become lowest at the de-bonded CFRP specimen when titanium was used. In conclusion, it was shown that the deformation of specimen became lowest when titanium was used. On the basis of this study result, the esthetic sense can be shown as the fracture data of bonded interface using adhesive are grafted onto the real life.