• Journal of Digital Convergence
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• v.16 no.7
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• pp.165-175
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• 2018

The aim of this study is to examine the effect of self-efficacy of married immigrant women on the quality of life and the moderating effect of family support in the effect relation. For this purpose, the study carried out a questionnaire survey to married immigrant women who attended multi-cultural family support centers in order to take language education and job education. Total 279 were selected as valid samples. The specific analysis results of this study are as follows. Firstly, the self-efficacy of married immigrant women has positive (+) effect on the quality of life. Secondly, the informational support in the family support has negative (-) effect on the quality of life, but evaluative and material support have positive (+) effect. In the interaction with self-efficacy, the emotional support has negative (-) effect, but the interaction with evaluative and material support has positive (+) effect. But, the interaction with informational support has no significant effect on the quality of life. The key factor affecting the quality of life on married immigrant women is the Korean family. Therefore, their quality of life can be enhanced as well as stable settlement in Korea if the families of husbands accept married immigrant women as their family members and support them.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.29 no.11B
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• pp.980-990
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• 2004

In this paper, we propose the dynamic bandwidth allocation algorithm for the IEEE802.3ah Ethernet Passive Optical Network(EPON) system to provide the fairness among terminals, and evaluate the delay-throughput performance by simulation. For the conventional EPON systems, an Optical Line Termination (OLT) schedules the upstream bandwidth for each Optical Network Unit (ONU), based on its buffer state. This scheme can provide a fair bandwidth allocation for each ONU. However, it has a critical problem that it does not guarantee the fair bandwidth among terminals which are connected to ONUs. For an example, we assume that the traffic from a greedy terminal increases at a time. Then, the buffer state of its ONU is instantly reported to the OLT, and finally the OW can get more bandwidth. As a result, the less bandwidth is allocated to the other ONUs, and thus the transfer delay of terminals connected to the ONUs gets inevitably increased. Noting that this unfairness problem exists in the conventional EPON systems, we propose a fair bandwidth allocation scheme by OLT with considering the buffer state of ONU as welt as the number of terminals connected it. For the performance evaluation, we develop the EPON simulation model with SIMULA simulation language. From the result of the throughput-delay performance and the dynamics of buffer state along time for each terminal and ONU, respectively, one can see that the proposed scheme can provide the fairness among not ONUs but terminals. Finally, it is worthwhile to note that the proposed scheme for the public EPON systems might be an attractive solution for providing the fairness among subscriber terminals.