• 해운
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• no.7 s.18
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• pp.43-43
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• 2005

• Journal of KIISE:Computing Practices and Letters
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• v.9 no.2
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• pp.191-204
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• 2003

In the home gateway environment, several characteristics for the user authentication mechanism should be reflected separately from the existing distributed service environment. First, the platform of a home gateway is a component based system that its services are installed dynamically. Second, the convenience that user can use several services by authentication of once should be offered. Finally, the system resources of a home gateway are restricted. However, a user authentication mechanism that reflected these characteristics is not shown at the user admin service specification of the OSGi service platform.(OSGi is the representative standardization organization of hone gateway.) Also, there is no existing authentication protocol that satisfies these qualities at the same time. In this paper, we propose a new user authentication mechanism considering those characteristics for the home gateway environment. We also design and implement an independent authentication service bundle based on the OSGi service platform so that it can perform user authentication operations for each bundle service. We supplement and extend the Kerberos Protocol that can apply.

• Transactions of the Korean Society of Mechanical Engineers A
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• v.37 no.8
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• pp.967-973
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• 2013

An accelerated ultrasonic fatigue test(UFT) has been used for analyzing very high cycle fatigue( VHCF, $N_f$ > $10^7$). This study reviews how the test specimen is to be determined. We focus on UFT using a resonance of 20 kHz. The specimen geometry is determined by selecting test materials by using a dynamic Young's modulus and wavelength of 20 kHz. The dynamic Young's modulus is calculated at the resonant frequency. Through a resonant vibration test at 20 kHz, the length of the specimen is calculated. By determining the shape of the specimen, the stress during the UFT is calculated. The UFT results should be comparable at the test frequency and the specimen geometry obtained by the conventional fatigue tests.

• Journal of the Korea Society of Computer and Information
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• v.25 no.9
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• pp.173-182
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• 2020

The purpose of this paper is to study the influence of new service methods of "artificial intelligence (AI) + medical cosmetology", a new service means, on customers' purchase intentions. To AI medical beauty APP sales as an empirical study. This paper designed Likert seven scale to investigate, using SPSS 24.0 statistical analysis software and AMOS24.0 structural equation software to analyze the survey data. The analysis method uses reliability analysis, validity analysis, and construct equation model analysis. Through empirical research, the following results can be found, 1. The system quality of AI medical beauty app will have a positive impact on perceived usefulness and perceived ease of use. 2. The information quality of AI medical beauty app will have a positive impact on perceived ease of use and perceived usefulness. 3. The service quality of AI medical beauty app will have a positive impact on perceived ease of use and perceived usefulness 4. Consumers' perceived ease of use has a positive impact on perceived usefulness and purchase intention. 5. The usefulness of consumers' notification has a positive effect on purchase intention.

• Journal of dental hygiene science
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• v.8 no.2
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• pp.51-56
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• 2008

This research surveyed, from 17 March 2008 to 25 March 2008, 261 students, 1,2,3 grade, who study in the a dental laboratory technology of college placed in Suwon. We sent them out each three questionnaire and surveyed their family and friends including themselves. We got back 584 paper out of 783 paper which we sent out and used as data of analysis. When choosing a dental clinic, we used a Pearson Correlation to understand a relation of variables connected with a medical service. The result showed that every each fields have a positive correlation and especially a correlation between a physical environment and an ability of dentist is showed most highly and a correlation between a basic element of clinic and a traffic convenience is showed a meaningful positive in that order.

• Journal of Korea Water Resources Association
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• v.50 no.1
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• pp.1-15
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• 2017

Information on radar rainfall with high spatio-temporal resolution over large areas has been used to mitigate climate-related disasters such as flash floods. On the other hand, a well-known problem associated with the radar rainfall using the Marshall-Palmer relationship is the underestimation. In this study, we develop a new bias correction scheme based on the quantile regression method. This study employed a bivariate copula function method for the joint simulation between radar and ground gauge rainfall data to better characterize the error distribution. The proposed quantile regression based bias corrected rainfall showed a good agreement with that of observed. Moreover, the results of our case studies suggest that the copula function approach was useful to functionalize the error distribution of radar rainfall in an effective way.

• Therapeutic Science for Rehabilitation
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• v.7 no.3
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• pp.9-21
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• 2018

Objective : This systematic review aimed to evaluate the global literature on the effect of early intervention for preschool children with autism spectrum disorder (ASD). Methods : A literature search of the PubMed database identified 10 studies published up to December 2017, using the following search terms: autism, autism spectrum disorder, ASD, high-function autism, high-function ASD, Asperger syndrome, pervasive developmental disorder, PDDNOS, intervention, and early intervention. Results : Early intervention for children with ASD used Applied Behavior Analysis in 8 of the 10 selected studies. The other two studies used a Sensory Integration approach and Technology-based intervention. Most studies reported positive effects on communication skills, social interaction skills, intelligence, adaptive behavior, and improved attention through early intervention. Conclusions : These results suggested a basis for early intervention for children with ASD. Further research is needed to determine the effectiveness of early intervention.

• Journal of the Korean Society for Nondestructive Testing
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• v.32 no.2
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• pp.149-154
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• 2012

The size and distribution of welding residual stress and welding deformation in welding structures have an effect on various sorts of damage like brittle failure, fatigue failure and stress corrosion cracking. So, research for this problem is necessary continuously. In this study, non-destructive technique using laser electronic speckle pattern interferometry, plate of welding specimen according to the external load on the entire behavior of residual stress are presented measurement techniques. Once, welding specimen force tensile loading, using electronic speckle pattern interferometry is measured. welding specimen of base metal and weld zone measure strain from measured result, this using measure elastic modulus. In this study, electronic speckle pattern interferometry use weld zone and base metal parts of the strain differences using were presented in residual stress calculated value, This residual stress value were calculated by numerical calculation. Consequently, weld zone of modulus high approximately 3.7 fold beside base metal and this measured approximately 8.46 MPa.

• The Journal of the Korea Contents Association
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• v.10 no.9
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• pp.432-437
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• 2010

The purpose of this research is to find out how festival servicescape and human service impact the participant's emotional response and behavioral intention in terms of participants as consumers. The servicescape of festival indicated 4 common factors, named cleanliness, convenience, suitability and attravtiveness. As a result of analysis, it indicated that cleanliness and convenience from among the servicescape of festival variables are positively on positive emotion, negatively on negative emotion. And it was analyzed that all the variables of human service influence significantly on emotional response. Especially, it showed that expertise of human service variables influence on positive emotion the most, influence significantly on negative emotion. The result of relationship on behavioral intention indicated that the convenience factor of festival servicescape and expertise factor of human service influence significantly. Therefore, to operate successful festival, festival organizer should plan and manage the festival based on factors which comprises festival servicescape and human service.

• Transactions of the Korean Society of Mechanical Engineers A
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• v.38 no.7
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• pp.711-717
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• 2014

An accelerated ultrasonic fatigue test (UFT) was used for analyzing very high cycle fatigue (VHCF, $N_f$ > $10^7$) behaviors of a specimen with a test resonance of 20 kHz. Using the finite element method (FEM), the dynamic behaviors of the specimen was studied by calculating the stresses along its gauge portion, with displacement. The shape of gauge portion profile was assumed to be a hyperbolic according to the stress equation of the UFT. However, as the specimen used in the test had a circular arc profile, the FEM was used for studying the local stresses for two cases of the gauge profile. The results were compared with those obtain from the stress equation of the UFT. The dynamic behavior of the gauge portion could be understood for further comparison with the actual results.