• KSII Transactions on Internet and Information Systems (TIIS)
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• v.12 no.11
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• pp.5404-5424
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• 2018

This work is mainly focused on two major topics in cloud platforms by using OpenStack as a case study: management and provisioning of resources to meet the requirements of a service demanded by remote end-user and relocation of virtual machines (VMs) requests to offload the encumbered compute nodes. The general framework architecture contains two subsystems: 1) An orchestrator that allows to systematize provisioning and resource management in OpenStack, and 2) A resource utilization based subsystem for vibrant VM relocation in OpenStack. The suggested orchestrator provisions and manages resources by: 1) manipulating application program interfaces (APIs) delivered by the cloud supplier in order to allocate/control/manage storage and compute resources; 2) interrelating with software-defined networking (SDN) controller to acquire the details of the accessible resources, and training the variations/rules to manage the network based on the requirements of cloud service. For resource provisioning, an algorithm is suggested, which provisions resources on the basis of unused resources in a pool of VMs. A sub-system is suggested for VM relocation in a cloud computing platform. The framework decides the proposed overload recognition, VM allocation algorithms for VM relocation in clouds and VM selection.

• The Korean Journal of Health Service Management
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• v.12 no.3
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• pp.27-39
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• 2018

Objectives: The purpose of this study was to verify the relationships among nursing work environment, job satisfaction, organizational commitment, and retention intention, as well as to clarify the factors that affect nurses' retention intention. Methods: The study included 163 nurses working in three general hospitals located in B city. Data were collected by a survey using self-administrated questionnaire and analyzed using the SPSS software. Results: The participants expressed a moderate level of retention intention. There were significant differences in retention intention by income (t=-2.13, p=.034) and intention to work (F=9.86, p=.001). The factors influencing retention intention were organizational commitment (${\beta}=.28$, p=.001), job satisfaction (${\beta}=.25$, p=.001), nursing work environment (${\beta}=.23$, p=.004), plan to work period (${\beta}=.13$, p=.027). These factors explained 55.3% of retention intention (F=41.079, p<.001). Conclusions: The findings showed that nursing administrators should develope programs that promote internal satisfaction for new nurses and strive to improve the human and physical aspects of the nursing work environment for career nurses.

• The Korean Journal of Health Service Management
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• v.12 no.3
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• pp.53-62
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• 2018

Objectives: This study analyzed the influence of organizational cynicism among ward sisters on their organizational citizenship behavior and how coaching leadership moderated it. Methods: Survey data from 500 ward sisters at 10 general hospitals were collected, and the data of 483 ward sisters were used. The IBM SPSS AMOS Ver. 21.0 and PROCESS macro software were used for conducting regression analysis, validity analysis, and regulation effect analysis. Results: Organizational cynicism was negatively related to organizational citizenship behavior. Coaching leadership strengthened the negative influence of organizational cynicism on organizational citizenship behavior. Conclusion: This study empirically identified that organizational cynicism is an important predisposing factor affecting the organizational citizenship behavior of ward sisters. In order for coaching leadership to exert a positive influence on organizational citizenship behaviors, addressing ward nurses' degree of organizational cynicism and psychological status should be prioritized.

• The Korean Journal of Health Service Management
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• v.13 no.3
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• pp.127-136
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• 2019

Objectives: This study examined the determinants of quality of life, depending on the presence or absence of asthma in adults, based on secondary wave data. Methods: Among the 21,724 people participating in the 6th Korea National Health and Nutrition Examination Survey as it was conducted from the first to third period, 495 participants who were aged 19 or older and responded to the question of the presence or absence of asthma were included in the final analysis. Demographic characteristics were examined using the SPSS/WIN 23.0 software tool for analysis of complex sample survey data. Health-related characteristics were presented using descriptive and multivariate analysis of data. Rao_Scott ${\chi}^2$ was used for the analysis of differences in quality of life, and multiple regression analysis of complex sample survey data was used to analyze factors affecting quality of life. Results: The variable factors negatively influencing quality of life were aging, cognition of their ill health, and limited activities. Conclusions: Based on the analysis, the study suggests that practical and ongoing nursing intervention proposals to improve the quality of life of asthmatic patients should be implemented not only for physical limitations and aging but also for psychological factors that reflect subjective health statuses.

• The Korean Journal of Health Service Management
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• v.13 no.3
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• pp.27-38
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• 2019

Objectives: The purpose of this study was to examine the influence of human rights sensitivity and nursing work environment on workplace bullying victimization among nurses in small- and medium-sized hospitals. Methods: The participants were 255 nurses from 5 general hospitals in Busan. A dataset was collected using a structured self-reporting questionnaire during the month of July 2018. The data were analyzed with SPSS WIN 23.0 software (IBM Corp., Armonk, NY, USA) using independent t-test, one-way analysis of variance, Pearson's correlation coefficient, and multiple regression analysis. Results: Nursing work environment showed negative correlation with workplace bullying victimization. Being a witness to bullying, organizational support, head nurse's leadership, and relationships with peers were found to influence workplace bullying victimization, and these 4 variables explained 37% of workplace bullying victimization. Conclusions: Formal procedures for cases of bullying and improvements in the leadership of head nurses and peer relationships are crucial to reducing workplace bullying victimization among nurses in small- and medium-sized hospitals. Hospital executives' efforts to provide sufficient physical and human resources for nursing services and to improve the welfare of nurses are also needed.

• The Journal of Asian Finance, Economics and Business
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• v.8 no.1
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• pp.375-383
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• 2021

The justice issue in the service recovery process has become an interesting topic especially in rural banks in Indonesia. There are two types of justice issues in handling the complaint process; distributive and informational. This study aims to analyze the effect of distributive and informational justice on complaint handling satisfaction. This study also examines the mediating role of positive and negative emotions on the effect of justice in post-merger rural banks. This research employs a survey by distributing a questionnaire to 238 customers who have complained to one of the post-merger rural banks in West Java and Yogyakarta. This study uses the structural equation modelling (SEM) method by WarpPLS software. The results reveal that distributive and informational justice have a positive effect on positive and negative emotions, while informational justice does not affect positive and negative emotions. Distributive and informational justice directly affect satisfaction over complaint handling. On the other hand, positive and negative emotions affect satisfaction over complaint handling. The findings of this study suggest that positive emotion also mediates the distributive justice effect on satisfaction over complaint. Lastly, positive and negative emotions do not mediate the informational justice effect on satisfaction over complaint handling at post-merger rural banks in West Java and Yogyakarta, Indonesia.

• International Journal of Advanced Culture Technology
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• v.9 no.2
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• pp.80-85
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• 2021

This study is to analyze the structure of the networks of tourism marketing on Twitter, identifying the most prominent users, the flow of information about tourism marketing, and the interaction between the users posting tweets. This study employs NodeXL pro as a visualization software package for social network analysis. The number of vertices or nodes is 171, and the number of the unique edges or links is 128, but there are 101 edges with duplicates, so the total links are 229, which means that there are fewer Twitter accounts in the social network on tourism marketing, but they have a few close relationships by sharing information. The research can map the social network of communicators of tourism marketing using Twitter data. The network has a complicated pattern, including one independent network and some connected networks. Some mediators connect each network and can control the information flow of tourism marketing. More communicators are getting the information than the ones providing it, which means that there is likely to be the dependence of information among communicators that can cause an obstacle and distortion of the information flow system, especially in the independent network.

• The Korean Journal of Emergency Medical Services
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• v.25 no.1
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• pp.57-72
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• 2021

Purpose: The purpose of this study was to provide basic data for developing strategic programs based on the types of perception to aid in the coping strategy of 119 emergency medical technicians who experienced have violence. Methods: The subjects were 119 emergency medical technicians working out of hospitals in Korea. Data were collected from March 10, 2019, to June 30, 2019. Q samples of 37 statements and P samples of 36 persons were taken using PC QUANL software. Results: As a result of the study, four types of coping with violence experiences were identified; these four types explained 53.79% of all variables from the examination. The types were labeled as the cooperation seeking and manual emphasis type, emotional suppression and stability seeking type, active response and business continuation type, communication empathy and recovery effort type. Conclusion: The Fire Department requires institutional measures to lower violence during field activities, and it will be necessary to develop a policy according to the type of perception of coping behaviors.

• KSII Transactions on Internet and Information Systems (TIIS)
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• v.15 no.4
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• pp.1216-1231
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• 2021

With the increase in the population of our cities and the rapid increase in the number of private cars, urban traffic has become more and more congested. At this stage, urban public transportation has become one of the main ways to improve urban traffic congestion. Aiming at the problem of how to improve the basic capacity of buses in multi-line transfer stations, this paper conducts simulation research based on anylogic software. Through micro-simulation analysis of vehicles entering, stopping, and exiting the station, combined with the delay model theory, the vehicle is given Stop organization optimization and station layout improvement methods, so that vehicles can run in the station more stably, smoothly and safely. Case analysis shows that applying this method to the roadside parking problem, the main and auxiliary bus stations have a significant improvement in operating capacity compared with the conventional tandem double bus stations, and the service level of the main and auxiliary bus stations has been significantly improved.

• Journal of Multimedia Information System
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• v.9 no.1
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• pp.11-20
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• 2022

In this paper, we have recently created self-driving cars and self-parking systems in human-friendly cars that can provide high safety and high convenience functions by recognizing the internal and external situations of automobiles in real time by incorporating next-generation electronics, information communication, and function control technologies. And with the development of connected cars, the ITS (Intelligent Transportation Systems) market is expected to grow rapidly. Intelligent Transportation System (ITS) is an intelligent transportation system that incorporates technologies such as electronics, information, communication, and control into the transportation system, and aims to implement a next-generation transportation system suitable for the information society. By combining the technologies of connected cars and Internet of Things with software features and operating systems, future cars will serve as a service platform to connect the surrounding infrastructure on their own. This study creates a research methodology based on the Enhanced Security Model in Self-Driving Cars model. As for the types of attacks, Availability Attack, Man in the Middle Attack, Imperial Password Use, and Use Inclusive Access Control attack defense methodology are used. Along with the commercialization of 5G, various service models using advanced technologies such as autonomous vehicles, traffic information sharing systems using IoT, and AI-based mobility services are also appearing, and the growth of smart transportation is accelerating. Therefore, research was conducted to defend against hacking based on vulnerabilities of smart cars based on artificial intelligence blockchain.