• The Journal of Korean Institute of Communications and Information Sciences
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• v.39C no.12
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• pp.1298-1306
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• 2014

In this paper, we use the ECMA-392 standard, the first cognitive radio networks to meet the demand for IT services in the ship. And, we investigate about the conflicts of devices that support multi-hop network based on the ECMA-392. Therefore, we propose the resolution scheme of CRP reservation conflicts to solve this. The current CRP reservation approaches does not solve the CRP reservation conflicts of ECMA-392 between devices that move at a distance of three hops. Therefore, it is not possible to guarantee the QoS of real time services such as multimedia streaming. So, we provide a new CRP reservation scheme to avoid conflict through a new 2-hop CRP Availability IE and the change of CRP Control field. From the simulation results, we know that the proposed method of 3 hops CRP reservation conflicts resolution improves the throughput of device.

• Korean Journal of Human Ecology
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• v.15 no.5
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• pp.729-741
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• 2006

The purpose of this study is to examine conflicts between female international marriage migrants(FIMMs) and their family members, and living conditions of FIMMs in Korea. The results will be useful in understanding FIMMs' struggles and will help them to develop their adaptive ability to family life. This study analyzed the factors in three dimensions: a Sociodemographic factor, a marriage-related factor and a factor of the migrants' relationship to their family members. All conflicts result from the lack of mutual understanding between the migrants and their family, and the differences between their languages and between their cultures. Of course, FIMMs can not adequately express their feelings and opinions in Korean language. Their loved ones and relatives can not express their feelings in the immigrants' languages, either. It is evident that there are a lot of misunderstandings caused from their language barrier. The public support for the migrants is limited. They live a lonely life and no consideration. Most of them complains that their husbands have no careful concern for their feelings. That seems because most of the Korean husbands have never had education enough to understand their problems in terms of international marriage. A close watch of what can be learned from conflict and complaints of women. However, any sympathy for foreign women's complaints should be evaluated in cultural sides: especially family life education programs for Korean husbands and their family members are required for a good grasp of typical intermarriage issues.

• Journal of Korea Multimedia Society
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• v.15 no.12
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• pp.1464-1474
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• 2012

In this paper, we propose a QoS (Quality of Service)-aware and cooperative resource reservation scheme using cross-layer link adaptation for wireless high definition video transmission through UWB (Ultra Wide Band) network with D-MAC (Distributed Medium Access Control). A wireless high definition video transmission system usually requires stable high throughput even without line-of-sight, e.g., a destination device in another room separated by a wall. Since the WiMedia D-MAC supporting DRP (Distributed Reservation Protocol) scheme causes lots of DRP resource reservation conflicts due to failure of beacon detection in wireless channel environment, overall performances of the WiMedia D-MAC can be deteriorated. And the current WiMedia MAC standard has not considered QoS provisioning even though QoS parameters such as a range of service rates are provided to each traffic stream. Therefore, we propose Relay DRP protocol with QoS-based relay node selection criterion, which makes a relay path to avoid DRP resource reservation conflicts and guarantee QoS more stably through cross-layer link adaptation of cooperative relay transmission scheme and is compliant with the current WiMedia D-MAC protocol. Simulation results demonstrate performance improvements of the proposed method for throughput and QoS provisioning.

• International Journal of Aeronautical and Space Sciences
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• v.17 no.1
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• pp.89-100
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• 2016

Given the unpredictability of the space environment, satellite communications are manually performed by exchanging telecommands and telemetry. Ground support for orbiting satellites is given only during limited periods of ground antenna visibility, which can result in conflicts when multiple satellites are present. This problem can be regarded as a scheduling problem of allocating antenna support (task) to limited visibility (resource). To mitigate unforeseen errors and costs associated with manual scheduling and mission planning, we propose a novel method based on a genetic algorithm to solve the ground support problem of multiple satellites and antennae with visibility conflicts. Numerous scheduling parameters, including user priority, emergency, profit, contact interval, support time, remaining resource, are considered to provide maximum benefit to users and real applications. The modeling and formulae are developed in accordance with the characteristics of satellite communication. To validate the proposed algorithm, 20 satellites and 3 ground antennae in the Korean peninsula are assumed and modeled using the satellite tool kit (STK). The proposed algorithm is applied to two operation modes: (i) telemetry, tracking, and command and (ii) payload. The results of the present study show near-optimal scheduling in both operation modes and demonstrate the applicability of the proposed algorithm to actual mission control systems.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.16 no.4
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• pp.692-700
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• 2012

The WiMedia Alliance has specified a Distributed Medium Access Control (D-MAC) protocol based on UWB for high speed wireless home networks and Wireless USB. In this paper, firstly, the fair SoQ-based Distributed Reservation Protocol (DRP) for D-MAC is analyzed. And a novel SoQ-based relay transmission protocol is proposed to overcome DRP conflicts fast. In the proposed protocol, each device executes the Satisfaction of QoS (SoQ) time slot allocation algorithm independently. And, in order to give the loser device due to DRP conflicts another chance to maintain QoS resources, the proposed relay transmission protocol helps the device reserve another indirect link maintaining the required QoS resources via a relay node.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.17 no.6
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• pp.1324-1329
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• 2013

The WiMedia Alliance has specified a Distributed Medium Access Control (D-MAC) protocol based on UWB for high speed wireless home networks and WPANs. In this paper, firstly, the fair SoQ-based Distributed Reservation Protocol (DRP) for D-MAC is analyzed. And a novel SoQ-based relay transmission protocol is proposed to overcome DRP conflicts fast. In the proposed protocol, each device executes the Satisfaction of QoS (SoQ) time slot allocation algorithm independently. And, in order to give the loser device due to DRP conflicts another chance to maintain QoS resources, the proposed relay transmission protocol helps the device reserve another indirect link maintaining the required QoS resources via a relay node.

• The Journal of Korean Academic Society of Nursing Education
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• v.7 no.2
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• pp.369-378
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• 2001

It is important for nurses to try to improve their interpersonal relationship and communication skill. The purpose of this study was to examine the nurse's inerpersonal conflict and expression with physicians, other nurses and patients & their caregivers. A convenient sample of 62 RN-BSN students were recruited. The data collection was done from August, 2001 to September, 2001. Nurses experienced the most conflicts with high-positioned nurses, then doctors, patients and their families, administrators, nurse-aid, nurse colleagues and lower-positioned nurses. There was a significant correlation between nurse's interpersonal conflict with doctors and nurse's age & career, between with high-positioned nurses and region of hospitals & nurse's position. The expression that nurses least-like from physicians was 'Do it as order'. From other nurses was 'manner of speech such like order'. And from patients and their family was 'naming such like young lady or sisters'. The other side, the expression that nurses most like expression from physicians and ohter nurses was 'You are excellent'. From patients and their family was 'You are kindness'. In conclusion, it is necessary to improve nurse's communication skills and interpersonal relationships.

• Health Communication
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• v.13 no.2
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• pp.175-183
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• 2018

Purpose: The purpose of this study was to compare communication competence, nursing professionalism, work environment and job satisfaction between outpatient nurses and ward nurses, and to identify the correlation among variables. Methods: The participants were 90 outpatient nurses and 98 ward nurses at the two general hospitals. Data were collected using self-administered questionnaires. Data were analyzed using descriptive statistics, ${\chi}^2-test$, independent t-test and Pearson's correlation coefficient. Results: There were statistically significant differences between two groups in nursing professionalism, possibilities for development, commitment to the workplace, social support from colleagues, social community at work and job satisfaction, outpatient nurses showed higher level than ward nurses except commitment to the workplace. The work environment variables and nurses' job satisfaction were mostly correlated. Job satisfaction showed significant negatively correlated with quantitative demands, emotional demands and role conflicts in both groups nurses. Conclusion: These findings showed that nursing work environments were the most important factor for job satisfaction of both group nurses. Therefore, it is necessary to put efforts in improving nursing work environment and to develop diverse strategies for human resource management.

• Journal of Korean Academy of Nursing
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• v.36 no.3
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• pp.468-474
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• 2006

Purpose: The purpose of this study was to analyze and clarify the meaning of the concept, assertiveness. Method: This study used Walker and Avant's process of concept analysis. Results: 1. Attributes of assertiveness were defined as 1) Self-esteem 2) Comprehension to others 3) Clarification of the subject 4) Verbal communication 5) Non-verbal communication 2. The antecedents of assertiveness consist of these facts 1) The occurrence of a conflict situation 2) The occurrence of will to stick to one's opinions 3. There are consequences occuring as a result of assertiveness 1) Positive self-confidence 2) Increased comprehension or consideration to others 3) Expand of mutual respect 4) Maintenance of continuously cooperative relationship with each other 5) Output of acceptable results to each other Conclusion: Assertiveness is a core human behavior and is key to interpersonal relationships. Using the components of the concept of assertiveness, many conflicts in a nursing situation can be effectively prevented.

• Journal of the Korean Home Economics Association
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• v.48 no.8
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• pp.51-65
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• 2010

This research explored the importance of conflict resolution in communication between adolescents and their parents. A teaching and learning plan on communication using the Active listening, I-message method and no-lose conflict resolution method was developed and applied to teaching the 'Communication among Family Members' unit in the middle school home economics and technology textbook. The experimental class of 203 students using the active listening, I message and no-lose conflict resolution method in communication was compared with a comparative class of 163 students using only the active listening and I message method, investigating the amounts of communication, conflicts, functional communication and degree of satisfaction the students perceived regarding relationships with their parents via pre and post tests. Both groups showed significant increases in their amounts of communication and functional communication. However, only the experimental class showed an increase in their degree of relationship satisfaction with their parents. Both groups evaluated the lesson positively.