• The Journal of Korea Robotics Society
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• v.14 no.2
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• pp.122-130
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• 2019

Collecting a rich but meaningful training data plays a key role in machine learning and deep learning researches for a self-driving vehicle. This paper introduces a detailed overview of existing open-source simulators which could be used for training self-driving vehicles. After reviewing the simulators, we propose a new effective approach to make a synthetic autonomous vehicle simulation platform suitable for learning and training artificial intelligence algorithms. Specially, we develop a synthetic simulator with various realistic situations and weather conditions which make the autonomous shuttle to learn more realistic situations and handle some unexpected events. The virtual environment is the mimics of the activity of a genuine shuttle vehicle on a physical world. Instead of doing the whole experiment of training in the real physical world, scenarios in 3D virtual worlds are made to calculate the parameters and training the model. From the simulator, the user can obtain data for the various situation and utilize it for the training purpose. Flexible options are available to choose sensors, monitor the output and implement any autonomous driving algorithm. Finally, we verify the effectiveness of the developed simulator by implementing an end-to-end CNN algorithm for training a self-driving shuttle.

• Journal of Korean Academy of Nursing Administration
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• v.6 no.1
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• pp.31-54
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• 2000

This study was aimed for effective nursing performance of the nurse to be able dedicate to the development of professional nursing work by understanding correlation between the leadership style of head nurse and the nursing performance of the nurse. The materials have been collected through structured questionnaires for 18 days from Feb. 2, 1999 to Feb. 20 from 234 nurses presently working at 4 hospitals Circumstances aptitude theory of Fleishman (1973) were used as the device of measuring leadership style, and staff nurses nursing performance were done by head nurses utilizing questionnaire adopted from Park. Data was analyzed by frequency, mean, ANOVA, ANCOVA, and Pearson's correlation coefficiency by using SPSS program. The results are as follows ; 1. Head nurse leadership was classified in the following manner : duty and human relationships oriented style of head nurse leadership(3.76), human relationship oriented style(3.30), duty leadership oriented style(3.12), and non-interference leadership style(2.77). Duty and human relationships showed highest score in this category. 2. The mean of nursing performance was 3.66, dependent nursing duty was 3.88, interpersonal relationship 3.78, and independent nursing was 3.34. 3. An education course of nursing performance by general characteristics was statistically significant. Job satisfaction, for seen working periods, and motivation for choosing a nursing job of nursing job characteristics was statistically siginficant. 4. As the degree of independence nursing performance increases, the degree and of dependance and interpersonal relationship of nursing performance increases. 5. The relationship between nurse leadership style and nursing performance were statistically different. The degree of duty and human relationship style of the head nurse were highest in dependent and independent nursing performance. Therefore, it is desirable that the head nurse should demonstrate the leadership style high in the duty and human relationships for effective nursing performance.

• Journal of Korean Academy of Nursing Administration
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• v.8 no.4
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• pp.551-561
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• 2002

Purpose : The purpose of the present study was to examine the causal relationships among head nurses' leadership (consideration oriented leadership, structure initiated leadership), nursing unit culture (human development culture, task development culture), and nurses' organizational commitment. Method : Four large general hospitals located in and around Seoul were selected to participate. The total sample of 286 registered nurses represents a response rate of 90 percent. Data for this study was collected from August to September in 2000 by questionnaire. Path analyses with LISREL program were used to test the fit of the proposed model to the data and to examine the causal relationships among variables. Result : Both the proposed model and the modified model fit the data adequately. The model revealed relatively high explanatory power. 52% of human development culture was explained by predicted variables and 44% of task development was explained by predicted variables; 47% of the organizational commitment was explained by predicted variables. In predicting developmental (both human and task) nursing unit culture, the findings of this study clearly demonstrated that head nurses' consideration oriented leadership might be the most important variable. The result also showed that head nurses' consideration oriented leadership might be the most important variable among the predicted variables in predicting organizational commitment. Conclusion : Based on the findings of this study, it was suggested that various studies, for example, matching leadership and nursing unit culture, were needed.

• Journal of the Korean Society of Marine Environment & Safety
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• v.21 no.1
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• pp.34-39
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• 2015

KCG, responsible Agency of maritime SAR operation has been known to address the marine casualties well, however, it was criticized because KCG failed to take prompt and effective response to the recent Ferry disaster at the very early stage. In this regards, the authors analyze the characteristics of marine incident with historical data, and also review and examine the national SAR system focusing on SAR coordination and human resources to make recommendation and suggestion in order to minimize the loss of lives to future marine incidents. As a result, KCG shall augment its capabilities, inter alia, fast libeboats and rescue helicopters for prompt response to marine incidents at the coastal waters, and KCG shall re-adjust the establishment of Rescue Coordination Center to improve operational problems of current system in accordance with IMO guidance, KCG is required to introduce mandatory training, qualification and certificate system to enhance the professionalism of SAR personnel.

• Journal of Digital Convergence
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• v.13 no.4
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• pp.283-293
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• 2015

This study explores experiences of male family care worker who are caring for their family members with chronic health conditions at home. Qualitative methodologies were used; semi-structured in-depth interviews with seven participants. Data were analysed using thematic analysis. Results indicated that men are playing greater roles in the provision of care for family members. Findings are presented as three themes: adaptation of role transformations, development for new relationships, and learning to cope with the unexpected. The results suggest that male family care workers experience changes in the ways that they adapt their traditional roles to the new roles they assume as caregivers. Implications for social workers and other care providers are discussed.

• The Journal of the Korea Contents Association
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• v.17 no.3
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• pp.178-188
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• 2017

This study is a descriptive research on the subjects of hospital nurses to investigate the effect of job satisfaction and fatigue on their nursing professional attitudes. The subjects were 262 nurses working at five general hospitals in J and S cities. Data collection was conducted from December 2014 to January 2015 using structured questionnaires on job satisfaction, fatigue and nursing professional attitudes. As a result of the study, nurses' nursing profession attitude was high in 30 year old and married nurses, and in clinical experience of either less than a year or more than six years, and nurses' nursing profession attitude was higher in charge nurses and head nurses than in general nurses. The most influential factors affecting the nursing professional attitude were job satisfaction, clinical career, and fatigue in that order. These findings provide theoretical evidence to explain the importance of job satisfaction and fatigue variables in influencing factors on nursing professional attitude. Therefore, in clinical practice, it is necessary to develop and implement an education program to improve nursing professional attitudes by considering nurses' job satisfaction, clinical career and fatigue level.

• The Journal of the Korea Contents Association
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• v.18 no.4
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• pp.290-304
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• 2018

The study proposes a discussion model for long-term care workers as a thought experiment, that strengthens speciality and presents an alternative education & training scheme for long-term care workers. First, the study unpacks the sociodemographic characteristics of license acquisitors and the employed as long-term care workers. In sequence, the study tries to present an alternative education & training scheme of the professional long-term care workers, that is comprised of a new education & training course with NCS in junior colleges for young peoples, intensification of speciality in education & training course through extension of times and deepening contents, introduction of legal refresher training, granting of roles of the NHIC as insurer in legal refresher training, introduction and legal employment of the professional tong-term care workers with career experience and speciality. At last, the study suggests a series of policy projects for realization of that alternative education & training scheme.

• Journal of Korean Academy of Nursing Administration
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• v.6 no.3
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• pp.405-418
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• 2000

The purpose of this study was to investigate the influence of the leadership of head nurses on the job satisfaction and job performance of staff nurses. The leadership styles of head nurses were classified to "authority-oriented" and "benevolence-oriented" based on korean traditional culture. The subjects of this study were 450 staff nurses working at medical-surgical units, intensive care units, emergency units of general hospitals in Kyungbuk area. Data were collected from March 13 to March 25 with several scales for the measurement of leadership styles of head nurses, job satisfaction and job performance of staff nurses. The Cronchbach alphas for the scales were. 79 in "authority-oriented" leadership style, 90 in "benevolence-oriented" leadership style, .91 in job satisfaction, .97 in job performance. Data were analyzed with SAS program using statistics of percentage, means, standard deviation, Pearson correlation, ANOVA and ANCOVA. The results were : 1. There were significant correlations between benevolence-oriented leadership style and job satisfaction, job performance of staff nurses(r=.24, p=.000 ; r=.12, p=.008), authority-oriented leadership style of head nurses and job satisfaction of staff nurses(r=.12 ; p=.024). 2. There were significant differences in job satisfaction of staff nurses by age and clinical career(F=10.36, p=.000 ; F=7.63, p=.000). Also there were significant differences in job performance of staff nurses by age, religion, marriage and clinical career(F=17.79, p=.000 ; F=2.89, p=.035 ; F=4.41, p=.036 ; F=14.33, p=.000). 3. There was significant differences in job satisfaction by the leadership style of head nurses. The job satisfaction of staff nurses with benevolence-oriented head nurses was higher than those with authority

• The Journal of Korean Academic Society of Nursing Education
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• v.14 no.1
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• pp.127-137
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• 2008

Purpose: This study aimed to explore the level of importance perceived by caregivers of elderly on the education of long term care nursing assistants (LTCNAs) taking care of elders with dementia or stroke. Method: Data was collected from 296 participants (112 families, 98 NAs, and 86 RNs) from October 2006 to February 2007. A structured questionnaire was used for data collection. Result: The item of 'attitude while caring for the aged' was identified as most important. The family group reported that 'position change' and 'understanding of geriatric diseases' were the most important for education, while LTCNAs, highly identified, 'bathing', and 'bed sheet change'. The RNs group regarded 'position change', and 'bathing' as most important. Institutions demanding LTCNAs' activities were special facilities for elderly care and special hospitals for the aged, and the need was also high in families with an elder incapacitated by illness. Conclusion: Nurses need to take an interest in education for enhancing the quality of LTCNAs and thus advance the quality of nursing care as well as the quality of life for the aged.

• KSCE Journal of Civil and Environmental Engineering Research
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• v.35 no.2
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• pp.493-500
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• 2015

The importance of the air and vessel traffic control center is increasing rapidly after the recent accident of 'Sewol ferry'. Aviation, marine, and the logistics sectors are already using monitoring and control technology widely. However, the monitoring and control system for complex and dangerous construction sites operation has yet to be employed. A monitoring/control system is required for effective communication between the control center and the construction equipment fleet at a construction site, and also the exact role that notifies accurate process and identification of hazards on construction sites as needed. Therefore, this paper presents the study about communication between the construction equipment fleet and the control center through the comparison of air traffic, marine, and logistics control systems for the development of construction equipment fleet management system.