• Journal of the Optical Society of Korea
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• v.20 no.1
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• pp.36-41
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• 2016

Visible Light Communication (VLC) using Light Emitting Diodes (LEDs) within the existing lighting infrastructure can reduce the implementation cost and may gain higher throughput than radio frequency (RF) or Infrared (IR) based wireless systems. Current indoor VLC systems may suffer from poor downlink resource allocation problems and small system throughput. To address these two issues, we propose an algorithm called a conflict graph scheduling (CGS) algorithm, including a conflict graph and a scheme that is based on the conflict graph. The conflict graph can ensure that users are able to transmit data without interference. The scheme considers the user fairness and system throughput, so that they both can get optimum values. Simulation results show that the proposed algorithm can guarantee significant improvement of system throughput under the premise of fairness.

• The Journal of Asian Finance, Economics and Business
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• v.9 no.6
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• pp.95-104
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• 2022

This study investigates the complex mechanism of work-family conflict affecting counterproductive behavior of employees based on resource conservation theory and 417 valid samples by using polynomial regression and response surface analysis. Counterproductive work behavior refers to any intentional behavior of an individual that has potential harm to the legitimate interests of the organization or its stakeholders. Results show that first, work-to-family conflict (WFC) and family-to-work conflict (FWC) had four matching types. Compared with "high WFC-low FWC," "low WFC-high FWC" and "low WFC-low FWC" matching conditions, the employee self-control resource depletion and counterproductive work behavior (CWB) are at their highest under "high WFC-high FWC" congruence matching condition. Second, the joint effect of WFC and FWC has a U-shaped relationship with counterproductive behavior. Compared with the "high WFC-low FWC" match state, the level of CWB in the "low WFC-high FWC" match state is higher. Third, the depletion of self-control resources played a mediating role in the effect of WFC on counterproductive behavior. Fourth, emotional intelligence moderated the relationship between the congruence of WFC and FWC and self-control resource depletion. Emotional intelligence was higher, and the positive relationship between the congruence of WFC and FWC and self-control resource depletion was weaker.

• Industrial Engineering and Management Systems
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• v.10 no.4
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• pp.279-287
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• 2011

This research develops a framework for resolving time and worker conflicts in the Critical Chain Project Management (CCPM) method, expressed in the form of a Max-Plus Linear (MPL) system. Our previous work proposed a method for resolving time conflicts. However, in practical cases, both time and worker conflicts may occur. Hence, we propose a method for resolving both time and worker conflicts for a single project. We first consider how to detect a resource conflict. Then, we define an adjacency matrix to resolve the detected conflicts. Using the proposed method, we confirm that the resource conflict can be resolved through a numerical example.

• Journal of Family Resource Management and Policy Review
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• v.12 no.3
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• pp.59-79
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• 2008

In this study, the investigator examined employees' work-family conflict, and analyzed its relationship with family health, to clarify the two-way influence of work-family and to verify the influence of a family friendship system based upon work-family compatibility and a healthy family. Data from 379 married female and male corporate employees were collected. Collected data were analyzed on the SPSS WIN 12.0 program. Study findings are as follows: First - For the individual, in domain variables of work-family conflict according to socio-demographic characteristics, gender has a significant influence upon strain-based conflict, family interference with work, and time-based conflict. Second - Work domain variables such as occupation, career, employment type, and working hours have a significant influence upon work interference with family, while career, and a working couple have a significant influence upon family interference with work. Finally - average housework hours and children have a significant influence upon work interference with family, whereas the length of a marriage, the average housework hours, and a housework helper have a significant influence upon family interference with work.

• Journal of Family Resource Management and Policy Review
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• v.16 no.2
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• pp.41-57
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• 2012

This study uncovers the relationships between mental health, couple relationships and marital happiness. The sample included 180 inter-married Korean men. The data were analyzed by means of frequency, Pearson correlation and multiple regression analysis using the SPSS. Mental health is positively correlated with marital conflict, but is negatively correlated with efficient communication and marital happiness. Furthermore, marital conflict is negatively correlated with communication and marital happiness. Second, mental health has a positive influence on marital conflict and a negative influence on marital happiness. Depression and social mal-adaptation have a negative effect on communication and marital happiness. Marital conflict does not have a mediating effect on mental health and marital happiness. Third, depression and social mal-adaptation have a negative influence on communication and marital happiness. Communication has a mediating effect on mental health and marital happiness. In conclusion, to reduce marital conflict, it is important to intervene in inter-married Korean men's marital happiness through special education programs and counseling.

• Journal of Family Resource Management and Policy Review
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• v.10 no.1
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• pp.107-126
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• 2006

The purpose of this study was to investigate the relationships of married middle-aged men and women's gender-role identity, marital conflicts and psychological adjustment. Psychological adjustment was composed of mid life crisis, depression, and perceived happiness. The data of the study were collected from 397 married, middle aged men and women from 40 years to 59 years-old by using self-administered questionnaire method. The results showed that gender role identity was different according to sex. In addition, women's perceived level of marital conflict was found to be significantly different according to their gender role identity, indicating that androgynous women reported the lowest level of marital conflict. However, men's gender role conflict was not related to their marital conflict. Furthermore, men's psychological adjustment level was not different according to their gender role identity, while women's psychological adjustment differed, indicating that androgynous women reported the lowest level of psychological adjustment and the undifferentiated women the highest level of psychological adjustment. Finally, the result indicated that for both men and men, marital conflict were positively correlated with mid-crisis and depression, and negatively related with happiness.

• Journal of Family Resource Management and Policy Review
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• v.14 no.4
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• pp.57-75
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• 2010

This study examined the effects of self-differentiation on family-life satisfaction and job satisfaction, and investigated the mediating effects of conflict-managing behavior. The participants in the present study were 196 married employees. LISREL was employed to test this hypothetical structural model. The results of this empirical study demonstrated that self-differentiation had positive effects on both family-life satisfaction and job satisfaction, which was mediated by the conflict-managing behavior but did not have a direct effect on either family-life satisfaction or job satisfaction. This study verified that conflict-managing behavior had mediating effects on the relationships among self-differentiation, family-life satisfaction, and job satisfaction. The results indicated that the higher the level of self-differentiation was, the more effective conflict-managing behavior was. And the more effective conflict-managing behavior was, the higher the levels of family-life satisfaction and job satisfaction were.

• Journal of Family Resource Management and Policy Review
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• v.19 no.3
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• pp.41-62
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• 2015

The purpose of this study is to investigate the effects of work-family conflict and spousal support resources on parenting stress among working mothers with pre-school children. This study involved a total of 232 working mothers with children enrolled in child care centers in Seoul and Gyeonggi-do as conducting a survey. First, the higher the work-family conflict (inter-role conflict caused by the impact of work on family life), the higher the family-work conflict (inter-role conflict caused by the impact of family life on work). Moreover, the lower the level of spousal support resources (emotional spousal support resources, instrumental spousal resources), the higher the work-family conflict and family-work conflict. The level of parenting stress was higher in working mothers experiencing greater work-family conflict and family-work conflict both and lower levels of spousal support resources for parenting. Second, the number of children and the amount of work-family conflict and instrumental spousal support resources had a statistically significant impact on parenting stress. Thus, the higher the number of children, the greater the work-family conflict, and the lower the level of instrumental spousal support resources, the higher the level of parenting stress. The findings of this study highlight the relative effects of role conflicts between work and family and of spousal support resources on parenting stress in working mothers. Husbands' being involved in parenting, in particular, was identified as an important support function for healthy child-rearing by successfully combining career and family responsibilities.

• Journal of Family Resource Management and Policy Review
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• v.21 no.2
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• pp.51-72
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• 2017

The purpose of this study was to identify perceived work-family conflict of married working women and men with children under 12 years. Specifically, This study attempts to examine the differences of relative influence between objective time variables and subjective satisfaction variables unlike previous research. For research, this study used the data of 1012 working men and women from the 3rd Nation survey of Korean Family in 2015. The main results of this study were as following. First, Business hours and cognition of enough leisure time had more relative effect of work${\rightarrow}$family conflict than any other variable. On the other hand, leisure time on weekdays had the effect of family${\rightarrow}$work conflict with women and men. Second, gender differences of work${\rightarrow}$family conflict and family${\rightarrow}$work conflict were identified. In work${\rightarrow}$family conflict, men were influenced cognition of enough leisure time, women were influenced couple conversation time and employment status unlike men. In family${\rightarrow}$work conflict, men were not influenced subjective satisfaction variables. But women were influenced satisfaction with division of child care. Third, in family${\rightarrow}$work conflict, the addition of objective time variables in Model of men resulted in an increased $R^2$-value, but in work${\rightarrow}$family conflict and family${\rightarrow}$work conflict, the addition of subjective satisfaction variables in Model of women resulted in an increased $R^2$-value.

• Journal of information and communication convergence engineering
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• v.9 no.4
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• pp.405-410
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• 2011

In this paper, a conflict-avoided resource reservation scheme for UWB (Ultra Wide Band) WPAN (Wireless Personal Area Network) with D-MAC (Distributed Medium Access Control) is proposed. Since distributed characteristic of the WiMedia D-MAC supporting DRP (Distributed Reservation Protocol) scheme may cause lots of conflicts, overall performances of the WiMedia D-MAC can be deteriorated. In addition, once a DRP conflict occurs, only one of the DRP reservations involved in that DRP conflict maintains the reserved MASs, while the other DRP reservation must be terminated and DRP negotiations for them have to be re-started. Such DRP termination and renegotiation time delays due to the DRP conflicts can be a critical problem to the mobile devices transceiving real-time QoS traffic streams. Therefore, we propose a mechanism to avoid DRP conflicts by providing a kind of path diversity using relay transmission scheme and demonstrate its performance improvements via simulation results.