• The Journal of Korean Institute of Communications and Information Sciences
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• v.41 no.10
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• pp.1290-1300
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• 2016

Recently, various middle box services have been developed and applied to provide network functions to end nodes of the network. Especially, network virtualization is increasingly proceeding by applying the virtualization technologies of cloud computing field to network field, and network platforms for various flexible services are being developed to connect among the virtual network devices. Carrier-grade Network Address Translation (CGNAT) is also one of these flexible network services. This paper designs and implements the DPDK-based CGNAT framework that provides flexibility and maximizes address translation throughput. Our framework achieves 15.5 times higher throughput than the address translation service by Linux kernel.

• Journal of Korean Physical Therapy Science
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• v.9 no.3
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• pp.129-140
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• 2002

This study intended to find out how the handicapped use medical aid, their satisfaction at using it and so on. First a preliminary survey(Apr. 20$\sim$24, 2002) was made for the handicapped who had been cured for rehabilitation by wearing medical aid at hospitals and welfare center in Jeonbuk region. Then total 120 subjects were asked to fill out a standardized questionnaire from May 15$\sim$22, 2002. Out of total 95 questionnaires collected, 84 questionnaires were analyzed except for 11 cases unsuitable for the intention of this study. The results can be outlined as follows: 1. In general characteristic, it was found that the causes of disability included disease(35 respondents; 41.7%), traffic accident(23 respondents, 27.4%) and so on. In addition, 1st handicap comprised the majority(32 respondents; 58.2%) in handicap grade and ankle foot orthosis(or b-k orthosis) was most often used as medical aid(28 respondents: 33.3%) 2. In particular, it was also shown that the 1st handicap mainly resulted from traffic accident(15 respondents, 27.3%) and post-disease disability (11 respondents, 20.0%). They wore medical aid for 1 year or less on the average, because they were hospitalized for cure, which showed statistically significant level(P<0.05). 3. It was found that total 69 respondents(82.1%) were more or less satisfied with their medical aids depending on the causes of disability, and total 46 respondents(83.6%) were satisfied with their aids according to their handicap grade, but there were no statistical significance. 4. Total 56(66.7%) respondents answered that they would purchase medical aid on their own expenses, when they became handicapped. And the price of medical aid ranged from $\300,000{\sim}400,000$(25 respondents: 29.8%) to \ 500,000 or more(24 respondents: 28.6%). It means that they purchased more or less expensive medical aid on their own expenses, which showed statistical significance(P<0.05). 5. If there was any failure of medical aid, 9 respondents(37.5%) answered that they would be serviced from medical companies, and 7 respondents(29.2%) would be serviced from medical aid manufacturers. Most respondents were serviced for their medical aids from related companies. For the question about the causes of dissatisfaction upon repair service, 11 respondents(45.8%) answered that existing service company provided unskilled repair services and other respondents answered that there was no spare part or higher service expenses than they thought. These answers had the statistical significance(P<0.05). However, 20 respondents(79.2%) answered that they were satisfied with the repair service, which means that most respondents are satisfied with the service. In view of the results as described above, it can be concluded that their handicap or disability results from disease or sequelae after traffic accident and most of the affected wear their own medical aid. In the future, it is required that the medical insurance should cover those medical aids, and the service for failed medical aids should be commissioned by technical serviceman to realize customized manufacture and repair service according to different causes so that the handicapped can enjoy more or less comfort and convenience in their daily lives without any extreme difficulty.

• Journal of the Korean Society of Costume
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• v.33
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• pp.175-188
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• 1997

the main purpose of this study was to inves-tigate the consumer dissatisfaction and com-plaining behavior in purchase and use by con-sumer value. The subjects participated this study were 204 female students. They were classified into 3 groups by important degree of instrumental value which is one of the 2 value categories that divided by the Rokeach. In order to assess consumer dissatishaction in purchase and use of clothing by those groups. The Clothing Purchase Dissatisfaction Inventory was used and The Consumer Complaining Behavior Inventory was adapted to asses consumer complaining behavior. The Clothing Purchase Dissatisfaction Inventory has 4 subscales(Price related factor Produt and Quality related factor Information and Service related factor Purchase decision-mak-ing related factor)and The Consumer Complaining behavior Inventory consisted in 3 subscales(Do nothing Private complaining Public complaining) Using SAS package in order to examine Clothing Purchase Dissatisfaction Inventory scores anaslysis of variance (MANOVA) was excuted And turkety test a kind of post-hoc multiple comparisons methods was adapted to compare Clothing Purchase Dissatisfaction In-ventory scores of each groups. in order to in-vestigate consumer complaining behavior by each groups and grade major pocket money a month the mean purchse price of clothing a month x2-test Frequency Percent were executed. Conclusion eached in this study are as fol-low: 1. Each group had differences in price re-lated factor Product nad Quality related fac-tor Information and Service related factor ex-cept Purchase decision -making related factor Groups which made much of value tend to dis-satisfy in price related facor Product and Quality related factor Information and Service related factor. 2. Group that made much of value had more high scores in private complaining complainto third party and the middle group had more high scores in private complaining . Group made little of value tended to do nothing. 3. Grade major pocket money a monty the mean purchase price of clothing a month didn't have difference signficantly in consumer behavior. but major had difference on private complaining.

• Transactions of the KSME C: Technology and Education
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• v.4 no.2
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• pp.101-109
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• 2016

The material properties of heat resistant materials at power plants are affected by thermal aging as operating time is accumulated. In this study, the influence of thermal aging on yield strength, tensile strength and fracture behavior for Mod.9Cr-1Mo (ASME Grade 91) steel which is a material widely adopted for Generation IV nuclear energy system has been investigated and analyzed. Service exposed Gr.91 steel materials sampled from a piping system of an ultra-supercritical (USC) plant in Korea with accumulated operation time of 73,716 hours were used for material testing. The test results of the service exposed material specimens were compared with those of the virgin Gr.91 steel specimens. Those test data were compared with the material properties of ASME code and RCC-MRx code. Conservatisms of the material properties in the design codes have been quantified based on the comparisons of those from virgin and service exposed material specimens.

• East Asian mathematical journal
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• v.31 no.4
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• pp.609-625
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• 2015

This study was subjected to 9th graders after making a conformity analysis about errors in function from a selected linear function domain learned in 8th grade, and using this we analyzed some errors learners have in the linear function domain. Learners showed the most deficiency in mastery of prerequisite facts concepts out of errors in linear functions and lack of skill in interpreting the content of the questions and technical errors occurred often as well. How the pre-service secondary school teachers prescribed these errors of linear function was analyzed from the point of problem solving strategies, accessing methods and whether or not the learner's error was used. Looking into the pre-service secondary teachers' prescription of the learners' errors in 3 fields, for the problem solving strategy a procedural strategy was used more than a conceptual strategy, and as for the accessing methods over 90% gave teacher led type explanations to the students. Also over 90% of pre-service secondary teachers did not use the learner's errors that turned up in problems.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.11 no.10
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• pp.3808-3819
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• 2010

This study was performed to determine the levels of quality of life(QOL) according to the grade of long-term care service in the elderly people who were judged from long-term care insurance, and to reveal its association with related variables. The interviews were made to 958 elderlies in urban and rural areas from March 1 to May 31, 2009. The mean scores of QOL among all subjects were $55.4{\pm}15.62$(Grade I; $49.7{\pm}14.17$, Grade II; $56.8{\pm}14.62$, Grade III; $59.4{\pm}16.36$), and they were lower according to the higher grade of long-term care insurance. The multiple regression analysis was used to reveal the explanatory powers of factors influencing on the level QOL. Such factors as educational level, monthly income, subjective health status, depression and MMSE-K were shown to affect their QOL in Grade I, Grade II, and Grade III with explanatory powers of 45~62%.

• Journal of the Korean Society for information Management
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• v.34 no.3
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• pp.179-207
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• 2017

The purpose of this study is to analyze the effects of cognitive developmental stages on library behaviors, reading tendency and perception on the library of the elementary students. For this study, a cognitive development tests and a questionnaire survey was conducted with students in their fourth and sixth grades in three elementary schools in Seoul and statistical analysis was carried out with the survey data. As a result, sixth grade students with the higher cognitive development had more requests for library information services than fourth grade students did. However, sixth grade students use library less and preferred to focus on the books for fun and personal interests, comparing with the fourth grade students. Their high level of cognitive development did not always have a positive effect on library behaviors and reading tendency. In addition, perception on the library of sixth grade students was lower than that of fourth grade students and it was influenced by library behaviors and reading tendency. It was also influenced positively by frequent use of library, active support by librarians and reading curriculum-related books. Based on the analysis, it is suggested that school library service should be provided based on the development stage of the upper grades of elementary students.

• Nuclear Engineering and Technology
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• v.30 no.6
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• pp.609-616
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• 1998

Cast duplex stainless steels are extensively used for primary pressure boundary components. These components are, however, embrittled due to the precipitation of $\alpha$' phase by spinodal decomposition and other processes when exposed to reactor operating temperature for a design lifetime or life extension conditions. This report presents a procedure for estimating the current condition and the residual life of safety-related stainless steel components by using ANL database and correlations. The database of Charpy impact energy suggests that CF-8M grade is the most susceptible to thermal aging and CF-3 grade is the least. Thus, the integrity of CF-8M alleys may be degraded seriously and the degree of deterioration may exceed acceptance limit after several years of service in the nuclear reactors.

• Journal of the Korean Society of Earth Science Education
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• v.8 no.3
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• pp.378-386
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• 2015

This study is to find out that pre-service elementary teacher's the effects of a ecology mentor club activities to the environmental sensitivity and the effects on the environment friendly attitude of elementary school students. This study has been aimed at 25 students of 5th grade in B metropolitan city S elementary school in 2015, B educational University of elementary pre-service teachers 10 people, Elementary School Teachers10 people to apply a ecology club mentor activities to investigate a comment participated in environmental mentor club activities of elementary pre-service teachers and the environmental sensitivity and the effects on the environment friendly attitude of elementary school students. Procedures for this research was the topic for setting ecology club mentor activities of elementary school students, pre-service elementary school teachers receive consultation from field teachers and guide to ecology club mentor activities of elementary school students. Before the ecology club mentor activities, pre-test environmental sensitivity and the environment-friendly attitude of were carried out. After the experiment, post-test of environmental sensitivity and environmental friendly attitude check was carried out. Also, investigate a comment of pre-service elementary teachers participate and guide to ecology club mentor activities of elementary school students. After the experiment results are as follows. First, the ecology club mentor activities of pre-service elementary school teachers are effective to cultivate environmental sensitivity of the elementary school students. Second, the ecology club mentor activities of pre-service elementary school teachers are effective to cultivate eco-friendly attitude of the elementary school students. Third, after ecology club mentor activities of elementary school students, pre-service elementary school teachers now have a very good feeling. Based on these results, suggestions for further research are as follows. First, the variety of ecological club programs target to elementary school students are needed. Second, there is a need for continuing research on the ecology club activities.

• Journal of Families and Better Life
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• v.19 no.5
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• pp.83-99
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• 2001

The propose of this study was to investigate the influences of adolescent’s volunteer service activity on perception toward the elderly. The subjects of this study were 556 students who were selected at random from the second grade of high school in the city of Daegu. A questionnaire was used as survey method. Factor analysis and ANOVA were employed for data analysis and Scheffe test for post-hoc analysis. The main findings were as follow: First Adolescent’s perception toward the elderly was hardly different according to the adolescent’s overall volunteer service activity. The participation attitude, the whole participation time, and the voluntary participation time of the adolescent’s overall volunteer service activity had no effect on the adolescent’s perception toward the elderly. But adolescents who were high in the degree of the participation satisfaction with overall volunteer service activities had a more positive perception on social aspect of the elderly than those who were low in it. Second, adolescent’s who participated in volunteer service activities for the elderly showed a noticeable difference in their perception toward the elderly. adolescents who participated in volunteer service activities for the elderly, those who had a enthusiastic participation attitude over volunteer service activities for the elderly had a more positive perception of the family-relationship and social aspects of the elderly than those who had a passive participation attitude in it. Futhermore, adolescents who were high in the degree of the participation satisfaction over volunteer service activities for the elderly had a more positive perception of the family-relational and social aspect of the elderly that those who were low in it. Also adolescents, who spent a lot of time in whole and voluntary participation over volunteer service activities for the elderly, had a more positive perception of the social aspect of the elderly than those who spentless time.