• The Journal of the Korea Contents Association
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• v.20 no.1
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• pp.202-216
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• 2020

In this study, we studied the utility and value of the mileage program as a strategy to strengthen the relationship with customers in the surrogate operation industry. To this end, we conducted a survey of 1,000 customers who used the service more than once, mainly from D company, which has operated the agency operation business for more than 20 years, and analyzed 309 sincerely respondents. Five characteristics of mileage use (emotional benefits, ease of use, economic usefulness, effort to acquire, variety of benefits). Two parameters (brand attitude, brand loyalty) were set, and the dependent variable was set for reuse. As a result of hypothesis test, emotional benefit, convenience of use, and economic usefulness were significant in terms of brand attitude and brand loyalty, and acquisition effort and benefit diversity did not show significant results. The results of this study showed that the surrogate operation industry should strive to strengthen the emotional benefits, convenience of use, and economic usefulness to customers in order to strengthen the relationship with the customers.

• Interaction and multiscale mechanics
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• v.3 no.2
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• pp.192-211
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• 2010

In most framed structures the nonlinearities and the damages are localized, extending over a limited length of the structural member. In order to capture the details of the local damage, the segments of a member that have entered the nonlinear range may need to be analyzed using the three-dimensional element (3D) model whereas the rest of the member can be analyzed using the simpler one-dimensional (1D) element model with fewer degrees of freedom. An Element-Coupling model was proposed to couple the small scale solid 3D elements with the large scale 1D beam elements. The mixed dimensional coupling is performed imposing the kinematic coupling hypothesis of the 1D model on the interfaces of the 3D model. The analysis results are compared with test results of a reinforced concrete pipe column and a structure consisting of reinforced concrete columns and a steel space truss subjected to static and dynamic loading. This structure is a reduced scale model of a direct air-cooled condenser support platform built in a thermal power plant. The reduction scale for the column as well as for the structure was 1:8. The same structures are also analyzed using 3D solid elements for the entire structure to demonstrate the validity of the Element-Coupling model. A comparison of the accuracy and the computational effort indicates that by the proposed Element-Coupling method the accuracy is almost the same but the computational effort is significantly reduced.

• Journal of Digital Convergence
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• v.20 no.5
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• pp.537-546
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• 2022

The purpose of this study is to investigate the relationship of grit with well-being and self-efficacy. Grit was considered as a two-factor variable with consistency of interest and perseverance of effort. For the empirical analysis, data were collected from the sample of 237 nurses working at general hospitals. Collected data were analyzed using SPSS 26 to test the hypothetical relationships. It was suggested that two factors of grit would be possible associated with well-being. However, the results of this study showed that the consistency of interest part of grit had non-significant effect on well-being, Perseverance of effort part of grit had indirect effect on well-being through fully mediation effect of self-efficacy. This study confirmed that grit, some how, positively related to well-being and variables such as, self-efficacy, could be a important variable to bridge grit to well-being. Further studies were suggested to perform studies on more about grit's two factors and unexplored external variables between grit and well-being of nursing professionals.

• The Journal of Engineering Geology
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• v.15 no.3
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• pp.309-323
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• 2005

Dynamic stiffness of subsurface materials is one of the most important geotechnical parameters in predicting deformational behavior of structures as well as practicing seismic design and performance evaluation. In an effort to measure the parameter efficiently and accurately, various borehole seismic testing techniques have been, thus, developed and used during past several decades. Moreover, recent rush of underground-space projects and increasing size of structures put more stress on reliable site investigation techniques in estimating stiffness of rock mass. In this paper, a new technique called 'in-hole seismic test' has been implemented to measure the dynamic stiffness of rock masses at subsurface foundations and tunnel-faces. The reliance of in-hole seismic test was evaluated by comparing the testing results at several rock sites with those of other borehole techniques and the technique tunnls out to be an efficient and accurate in-situ testing technique.

• The Journal of Korean Academy of Prosthodontics
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• v.41 no.4
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• pp.519-531
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• 2003

Statement of problem : Chronic implant screw loosening remains a problem in restorative practices. Some implant manufactureres have introduced abutment screws with treated material, surfaces and macrostructures in an effort to reduce potential loosening. Purpose : This study evaluated the materials and loading cycles on detorque value after dynamic continous fatigue test in the sinulated conditions of posterior single restoration. Material and method : Fourteen of each of the following abutment screws - titanium alloy, gold alloy, gold-tite, and titanium alloy modified - were used in test. SEM is used to verify macrostructures of each screws. $ZrO_2/Al_2O_3$ composite abutment was tightened on $4{\times}10.0mm$ titanium external implant at 30 Ncm. Cyclic loading machine delivered dynamic loading forces between 20 and 320N for 100,000, 200,000, 300,000, 500,000, and 1,000,000 cycles at frequencies 14Hz. Torque and detorque value after loading was measured. Results : All measued screws had different screw length and thread form. Titanium modified screw had greater detorque value than others before and after cyclic loadings(p<0.05). All abutment screws had no significant change in mean percentage of detorque value after loading to initial value after less than 500.000 cyclic loadings, but significant lower value after 1,000,000 cycles(p<0.05). Conclusion : Within limintations of this study all abutment screws may be loosend after about 1 year use. Annual check-up is nessasary to prevent screw loosening.

• The Mathematical Education
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• v.56 no.2
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• pp.177-191
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• 2017

This study was to investigate the effect of the statistics education program for the test-free semester. Two tests of questionnaires were used after revising some items for the subjects and statistical contents covered according to the purpose of the study during the 2nd semester, 2016. one was for finding students' attitude toward statistics and the other for understanding my career exploration. The statistics education program was developed for 5 lesson units and was applied to two classes with 53 students of one middle school in Gyeonggi-province. The results showed that students' understanding on career exploration was improved especially, in self understanding, perceiving career world related to statistics, and economical & educational understanding in statistical career. Also, the three areas such as interest, value, and effort among five areas about students' statistical attitude which was measured by the attitude test revised from the previous study, were improved with statistical significance. Moreover, we analyzed the degree of students' satisfaction over the program. Most of students were satisfied with the program saying that "I could not believe it is over now. The time has gone so fast." or "My mentor(a pre-service teacher) helped me a lot." Therefore, the program for the test-free semester should include the contents for exploring future-career and relating to real life.

• Research in Community and Public Health Nursing
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• v.10 no.2
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• pp.320-329
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• 1999

This study has been done for the purpose of testing the effect of Health promotion Education on the Health perception and Health behavior performance of Elementary school student's. The collection data has conducted from June 19, 1999 to August 24, 1999. The subjects for this study were sixth grade of 'ㅅ' elementary school. which is located in 'ㄱ' city a chosen one class experimental group(38) and as a control group(38). The study were designed as nonequivalent control group pretest. posttest. follow test design. In pretest, the general characteristics of two groups, health perception and Health performance were measured, the Experimental group was given health promotion Education for a one week after the posttest, and follow test was done Health performance. for eight week's summer vocation. The instrument used for this study were Health perception scale developed by Ware(l979) were modified by Lee(l984) and Health promoting behavior scale developed by Kim(l997) were modified by No Tae Su(l999). The data analysis was done using t-test, $x^2$ -test, ANOVA. and pearson correlation coefficient using SAS/PC program. The result of this study are summarized as follows: l) There is on difference between experimental group and control group 2) The hypothesis is factor's are supported 'The experimental group which was given health promotion education will shows higher health perception and health behavior performance than control group which given that' (meal habit F=6.40 P<.05. mental health F=8.02 P<.01) 3) In health behavior performance, scale the highest domain was mental health, personal hygiene, meal habit Exercise. The following suggestions are made based on the above results: 1) Replication of the research is needed to confirm effects of health perception and Health promotion education including the elementary school students. 2) Elementary school teachers should make an effort to develop of Health perception progress and carry about continue Health promotion education program for profit stage of growth and development for elementary school students.

• International Journal of Highway Engineering
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• v.7 no.2 s.24
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• pp.1-12
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• 2005

This study was conducted to evaluate effect of geogrid and fabric, which are used underneath the overlaid asphalt pavement for retarding reflection cracking by simulated laboratory test. In this study, an interlayer at the interface between old concrete pavement surface and overlaid asphalt mixture, and polymer-modifier were used as an effort of retarding reflection crack initiation and for strengthening mixture. Five products were used in preparation of asphalt concrete beam specimen which was tack coated on top of jointed concrete block. Simulated Mode I and II fracture test were conducted under wheel loading and results were compared among those products. From the test results, several material and reinforcement combinations were observed to have a significant retardation effect against reflection cracking. The most effectively strengthened pavement against reflection cracking was found to be the LDPE-modifier asphalt mixture with a grid reinforcement at the bottom.

• The Journal of the Korea Contents Association
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• v.15 no.10
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• pp.316-326
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• 2015

The present study aims to investigate the association between knowledge, attitude, and practice of blood donating in an effort to increase the participation rate of blood donation among university students. Data was obtained among 272 in theirs 20s health sciences students in two university of South Korea through self-reported questionnaires including Knowledge, attitude, and behavioral practice regarding blood donation during 8st December 2014 to 12st December 2014. Pearson correlation test, student's t-test or descriptive statistics were performed for the data analysis. The results were as follows: 1) There was positive significant relationship between Attitude and behavioral practice towards blood donation(P <.05). 2) There was significant difference in the knowledge(P<.01) and attitude(P<.05) regarding blood donation according to public health vs non-public health. 3) The participants with previous blood donation experiences showed a higher participation rate than those without such an experience(P<.01). It is important not only to improve the university student's attitude towards blood donation through media advertising but also to reinforce the compensation offered to donors.

• Proceedings of the KSR Conference
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• 2007.11a
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• pp.462-467
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• 2007

From the research which it sees verification of the whole interpretation and local interpretation of the durability steel deck bridge a static test and it produces the test body which it sells with character and it executes smallness pul lek detailed interpretation it leads and the appropriate characteristic of smallness pul lek detailed interpretation and to sleep a nominal stress price and it compares it judges it does. The stress quality from each structure region which it follows in load stock location it analyzes and from the hazard which evaluates, the objective region the length rib and the bottom grater weld zone, the length rib and width rib connection department and the width rib with the father it divided. It investigated the stress distribution of the test body from these objective location, FEM interpretation it led and the conduct against each structure state tax it analyzed. General conduct the load stock location the floor plate is located in the center with interpretation price together symmetry characteristic to seem, it cannot be like that it cannot there is one actual test price. Like this reason the length rib and width rib connection actually production even production characteristic security it is a day when it is impossible with the curvature junction department which it blows, it follows in examination body deferment condition and form feed with the fact that it is visible a big difference even with error of some it becomes. Consequently for a data and the research which are more accurate it is judged with the fact that the effort which is prudent will be necessary.