• Journal of Communications and Networks
• /
• v.10 no.4
• /
• pp.430-436
• /
• 2008

Recent studies have convinced that network coding can improve the performance of live media streaming in terms of startup delay, resilience to peer dynamics, as well as reduced bandwidth cost on dedicated streaming servers. However, there still exist some strategy drawbacks and neglected problems which need to be further researched. In addition to the commonly used evaluation parameters of the network and user experiences mentioned above, we focus on additional key factors, playback lag and switch lag, which have not been fully explored in previous work. In this paper, we present SonicStream, a novel and fully implemented live peer to peer (P2P) media streaming system with consideration of rich user experiences, including startup delay, playback continuity, playback lag, switch lag, etc. In pursuit of a further enhanced user experience, we revise traditional peer selection/data scheduling methods. Through a series of experimental evaluations and a cautious comparison with the latest similar work $R^2$, the superior performance of SonicStream has been preliminarily verified.

• Safety and Health at Work
• /
• v.9 no.4
• /
• pp.427-433
• /
• 2018

Background: The purpose of this study was to identify the influence of workers' perceived workload, accident experiences, supervisors' safety leadership, and an organization's safety climate on the cognitive and emotional risk perception. Methods: Six hundred and twenty employees in a variety of manufacturing organizations were asked to complete to a questionnaire. Among them, a total of 376 employees provided valid data for analysis. To test the hypothesis, correlation analysis and hierarchical regression analysis were used. Statistical analyses were conducted using IBM SPSS program, version 23. Results: The results indicated that workload and accident experiences have a positive influence and safety leadership and safety climate have a negative influence on the cognitive and emotional risk perception. Workload, safety leadership, and the safety climate influence perceived risk more than accident experience, especially for the emotional risk perception. Conclusion: These results indicated that multilevel factors (organization, group, and individual) play a critical role in predicting individual risk perceptions. Based on these results, therefore, to reduce risk perception related with unsafe behaviors and accidents, organizations need to conduct a variety of safety programs that enhance their safety climate beyond simple safety-related education and training. Simultaneously, it needs to seek ways to promote supervisors' safety leadership behaviors (e.g., site visits, feedback, safety communication, etc.). In addition, it is necessary to adjust work speed and amount and allocate task considering employees' skill and ability to reduce the workload for reducing risk perception.

• Journal of Korean Clinical Nursing Research
• /
• v.27 no.3
• /
• pp.221-232
• /
• 2021

Purpose: The purpose of this study was to explore emergency room nurse's work experiences during the COVID-19 pandemic. Methods: Data were collected from 15 registered nurses working in the emergency room between October, 10th and December 15th, 2020, through focus group interviews and in depth interviews. Collected data were analyzed using Colaizzi's phenomenological method. Results: The study derived four categories and eight themes. The four categories are 'sense of cringing with fear', 'nursing in chaotic situation', 'lonely struggles', and 'career growth as a nurse'. Emergency room nurses experienced fear and confusion in the COVID-19 pandemic, but overcame the crisis and had positive experiences of professional growth as a nurse. Conclusion: To protect emergency room nurses from infectious disease and improve their professional quality of life during the COVID-19 pandemic appropriate education and healthcare resource should be provided. It is necessary to reflect clinical worker's opinions and improve the delivery system of guideline to reduce confusion in the field and develop practical infectious disease control guideline. Furthermore, better working conditions, appropriate rewards and social and mental support should be provided for nurses in emergency room.

• Journal of Information Technology Services
• /
• v.20 no.3
• /
• pp.27-40
• /
• 2021

There have been a series of mixed reviews on the 'untact work' which was implemented for the safety of the organizational members from Covid-19. This study reports a follow-up study with a quantitative approach to issues identified by in-depth interviews with workers and managers who have experiences in work from home. To compare the views of workers and managers on untact work, 264 workers and 141 managers were surveyed. An analysis of agreement, congruency, and accuracy on the basis of the co-orientation model shows that workers are more positive about the untact work than managers and that managers are found to have a negative perception on untact work. This seems to be a burden on workers. More specifically, managers and workers show significant perception gaps on the issues of unfair evaluation and work-life balance. The results imply that organizations need to make efforts to minimize the perception gaps between workers and managers. This would bring about benefits from untact work.

• Safety and Health at Work
• /
• v.3 no.2
• /
• pp.101-103
• /
• 2012

To identify the allergy problem of a 36-year old swimming instructor, who experiences heavy itching and rashes whenever she comes in contact with pool water. Patch tests were performed with European standard series and materials from the work floor. A positive patch test to aluminum chloride and flocculant was observed. Occupational dermatitis is, based on a contact allergy to aluminum chloride in the flocculant.

• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.17 no.6
• /
• pp.215-225
• /
• 2016

The purpose this study was to explore the return-to-work experience of nurses after receiving cancer treatment. The participants of this research were 6 registered nurses who were working when they were diagnosed with cancer. Data were collected by individual in-depth interviews from January 5 to January 29, 2016 and analyzed using phenomenological methodology by Colaizzi(1978). The study results revealed that the return-to-work experiences of nurses after receiving cancer treatment may be categorized as 'Enduring hardly', 'Living a balance in my turning point', 'Reborn' and may be identified with 9 theme clusters and 27 themes. Their experience of returning to work as a nurse after cancer treatment consisted of expressing difficulty in handling both work and treatment. Despite that, they came to live a more mature life after their disease and came to affirm their existence through their work. Thus, an improved working environment to manage both work and treatment and continual support and assistance from society is deemed necessary.

• Journal of the Korea Fashion and Costume Design Association
• /
• v.7 no.3
• /
• pp.1-6
• /
• 2005

'Interaction' here means an action that reciprocally affects each other. In this action each change and movement does not exist independently but acts upon each other. The interaction of fashion design has undergone a lot of changing experiences. Besides it assumes the role of an appreciator that participates in the formation of work. This interaction breaks down the distinction between the designer as the maker and presenter of dress and the passive dresser and appreciator as its passive receivers.. Finally, it integrates the creator, receiver and technology altogether. The interaction tendencies of fashion design treated in this study are classified into four types. First, the mechanism that is included as a part of work and the cognitive response that the observer experiences. Second, the response that fashion design displays towards the stimulus of circumstances. Third, the changeability of manipulation of fashion design. Fourth, the control that mechanism acts upon dynamic status by technology. As in may other fields of our life, interaction in fashion design reflects the change and interactivity of our thinking and ideas.

• Korean Journal of Occupational Health Nursing
• /
• v.18 no.1
• /
• pp.84-97
• /
• 2009

Purpose: The purpose of this phenomenological study was to understand the job experiences of the medical aid client managers Method: The data were collected through an in-depth interview from twelve medical aid client managers. It was analyzed using the phenomenological method proposed by Colaizzi (1978). Their feedback was categorized into five items such as 'settlement in the unknown place,' 'exhaustion from work,' 'difficulties in dealing with people,' 'achievement of professionalism and accomplishment,' and 'vision on the new aspect.' Conclusion: Medical aid client managers played diverse roles and they had a role conflict due to unstable position amid feeling proud with new vision on their roles. The results of this study suggested that systematic development of job training programs and description on the duty are needed. Moreover, appropriate legal basis for the duty of medical aid client managers is to be established. Finally, based on this research, more acknowledgement from the Korean nursing society is needed for the new emerging professional job.

• Journal of the Korea Safety Management & Science
• /
• v.25 no.2
• /
• pp.99-106
• /
• 2023

This study would analyze a survey conducted with 609 workers to use the results as materials for the settlement of safety culture for the characteristics of the establishment by assessing the status of the workers' exposure to harmful risks and the impact on safety culture to present the following conclusions. This study has significance in that it found that exposure to harmful/dangerous factors in the establishment and the workers' experiences of occupational accidents affect their perception of safety culture and that in particular, 'worker safety priority' of the safety cultural factors was an important factor, and it is judged that continuous studies are necessary so that the perceptions of safety culture will spread in the establishment.

• Korean Journal of Human Ecology
• /
• v.23 no.6
• /
• pp.1155-1170
• /
• 2014

This study was performed to understand the structure of family experiences of adolescent behavior problems by analyzing and integrating family experiences in the family relationships. This study intends to discover in-depth family experience by analyzing the individual meaning of family experiences from client's wording. This study was performed in phenomenological method through analyzing the actual counselling cases. The results indicated that 9 units of meaning were derived on family relationships. In the family relationship domain, desire to die or kill others, guilt and resentment, not receiving the respect, mother's ignorance and verbal abuse to father were derived as primary components. Parents-children relationships-Not understanding about his father's drunkenness and disgust, getting exhausted, untrusted parents, unidirectional attitude without communication. Sibling Relationships-younger brother or sister to work off frustration.