• Journal of the Korea Convergence Society
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• v.8 no.2
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• pp.183-196
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• 2017

The purpose of this study is to investigate the effectiveness of case management in child welfare facilities to determine what the inhibiting factors as well as complementary factors are. For this purpose, data from 181 workers in community children's centers and 96 workers in child protection agencies and foster care centers were analyzed, the analyzed by using SPSS 21.0 program. In the case of community children's center interpersonal skills, case management guidelines, super vision, and network utilization were the influential factors while in other child welfare facilities, personal inhibitory factors, social welfare work experience, case management experience, and network utilization were the affecting factors. The implications reveal that social welfare practice should enhance the interpersonal skills of the workers, strengthen the supervision system, and provide a clear case management guideline. It is also important to set up a network of all local child welfare facilities and strengthen cooperation and mutual support among the institutions within the network.

• Journal of Convergence Society for SMB
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• v.6 no.3
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• pp.49-55
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• 2016

This paper proposes an adaptive video signal transmission scheme in order to ensure the QoS (Quality of Service) of user requirements. SVC (Scalable Video Coding) is an effective transmission scheme, because that can transmit video signal according to the video layer's weight. However, in previous works, those adaptive transmission systems which are considered about the various channel environments and user requirements have not been insufficiently studied. So, we propose the SVC signal transmission using inter-layer differential OVSF code allocation scheme in MC-CDMA. The proposed scheme is able to obtain each layer signal's protection order and control the sub-block of MC-CDMA by feedback information from receiver. Therefore, our proposed scheme is possible to provide the video quality for each users according to variable channel environments. The simulation results demonstrate the enhancement of proposed system in terms of BER performance.

• Journal of Convergence for Information Technology
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• v.9 no.10
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• pp.9-15
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• 2019

Recently, in the field of next-generation e-commerce and finance, interest in blockchain-based technologies such as Bitcoin and Ethereum is great. Although the security of blockchain technology is known to be secure, hacking incidents / accidents related to cryptocurrencies are being issued. The main causes were vulnerabilities in the external environment, such as taking over login sessions on cryptocurrency wallets, exposing private keys due to malware infection, and using simple passwords. However, private key management recommends general methods such as utilizing a dedicated application or local backup and physical archiving through document printing. In this paper, we propose a white box password-based private key protection scheme. As a result of safety and performance analysis, we strengthened the security against vulnerability of private key exposure and proved the processing efficiency of existing protocol.

• Journal of Radiation Protection and Research
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• v.46 no.3
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• pp.112-119
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• 2021

Background: This work aims to develop a new imaging system based on a pulse shape discrimination-capable Cs₂LiYCl₆:Ce (CLYC) scintillation detector combined with the rotational modulation collimator (RMC) technique for dual-particle imaging. Materials and Methods: In this study, a CLYC-based RMC system was designed based on Monte Carlo simulations, and a prototype was fabricated. Therein, a rotation control system was developed to rotate the RMC unit precisely, and a graphical user interface-based software was also developed to operate the data acquisition with RMC rotation. The RMC system was developed to allow combining various types of collimator masks and detectors interchangeably, making the imaging system more versatile for various applications and conditions. Results and Discussion: Operational performance of the fabricated system was studied by checking the accuracy and precision of the collimator rotation and obtaining modulation patterns from a gamma-ray source repeatedly. Conclusion: The prototype RMC system showed reliability in its mechanical properties and reproducibility in the acquisition of modulation patterns, and it will be further investigated for its dual-particle imaging capability with various complex radioactive source conditions.

• Journal of the Korea Convergence Society
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• v.10 no.12
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• pp.453-463
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• 2019

The purpose of study was the non-equivalent control group pretest-posttest design to test the effect of self-directed nursing practice based peer-tutoring of same sophomore, on the level of confidence, performance and self-efficacy of core nursing skills in nursing students. The subjects were 68 nursing students in K City from May 1^th to June 12^th in 2019. The participants were shared into the peer tutoring practice group (experimental group, n=34) and the lecturer guided practice group (control group, n=34). The results of study, the experimental group scored significantly higher on the foley catheterization performance (t=11.60, p<.001), confidence (t=4.123, p<.001) and wearing protection equipment performance (t=5.91, p<.001), confidence (t=4.24, p<.001) and enema performance (t=2.82, p=.008), confidence (t=2.09, p=.044) and self-efficacy (t=4.52, p<.001) than control group. Therefore, the results justified that self-directed nursing practice based peer-tutoring could be effective in improving the performance, confidence and self-efficacy of core nursing skills in nursing students. Based on this, I suggest the study that examines the effects of peer-tutoring by applying it to various majors.

• Journal of Industrial Convergence
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• v.18 no.4
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• pp.1-8
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• 2020

The case of Dance Chang-jak-san-shil, a dance performance support project linked to digital media, was analyzed from the perspective of liveness. The purpose was to examine the limitations of the liveness and to suggest ways to overcome them. The research case was focused on the factors of the time and space and audience (the sharing of field and acceptance experience) of the creative production room that supports works based on the creativity of dance performances. As a result, active SNS for accessibility of performing arts, expansion of access to art through the use of teaching media of art education through archiving, multi-dimensional access and provision for inducing audience participation and creative appreciation in one-way digital media transmission, provision of copyright protection devices, and audience to enter offline. As a long-term strategy for the future of the performing arts field, I would like to present the need for a change in the communication with the audience and experimental works that combine art and technology.

• Journal of Convergence for Information Technology
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• v.8 no.6
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• pp.173-186
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• 2018

While cloud services are expanding, many users are having difficulty in adopting cloud services. This is because there is no information as to which cloud services can be trusted by users. loud service level agreement (Cloud SLA) is an agreement between cloud service providers and cloud service consumers using qualitative and quantitative indicators including quality and performance, etc. of cloud services. In this study, we propose a framework for cloud SLA that can be applied to the domestic cloud industry to improve service levels for cloud service providers and to protect users and also derive the detailed components of cloud SLA applicable to the domestic cloud industry using the proposed framework. Through this result, it is expected that the government will utilize the policy to enhance the reliability between cloud service providers and users under "the Act on the Development of Cloud Computing and Protection of Users", and eventually to activate cloud services by improving the quality and performance level of domestic cloud services and building a user trust.

• Convergence Security Journal
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• v.24 no.2
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• pp.79-87
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• 2024

This paper addresses the increasing cyber attacks exploiting security vulnerabilities in software due to the rise in web applications. CSRF (Cross-Site Request Forgery) attacks pose a serious threat to web users and developers and must be prevented in advance. CSRF involves performing malicious requests without the user's consent, making protection methods crucial for web applications. This study compares and verifies the CSRF defense performance of two frameworks, Spring Security and Apache Shiro, to propose an effectively applicable framework. The results show that both frameworks successfully defend against CSRF attacks; however, Spring Security processes requests faster, averaging 2.55 seconds compared to Apache Shiro's 5.1 seconds. This performance difference stems from variations in internal processing methods and optimization levels. Both frameworks showed no significant differences in resource usage. Therefore, Spring Security is more suitable for environments requiring high performance and efficient request processing, while Apache Shiro needs improvement. These findings are expected to serve as valuable references for designing web application security architectures

• Journal of Digital Convergence
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• v.11 no.11
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• pp.479-490
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• 2013

In this research we surveyed level of textual recognition and of practice by nursing students regarding patient privacy protection. The subjects were 383 nursing students. The questionnaire developed by Lee and Park (2005) were modified and used. Data analysis was conducted through descriptive statistics, t-test, ANOVA, and Pearson correlation coefficients. The result shows that about 96.1% of the subjects received education on patient privacy protection in school or hospital but 48.0% of all received education of 10 minutes or less. Average score for recognition of patient privacy protection was a 4.13 but average practice score was 3.84. Among all areas, communication tasks showed the highest scores for both recognition and practice. There are differences according to grade in school and age of the subject, and experience with clinical practice, existence of regular educational program embedded in clinical practice at hospitals, and the length of each educational session. For both total score and score for every domain, there was a correlation between recognition and practice. The conclusions drawn from this research will help colleges of nursing and hospitals to design and develop contents of educational programs for nursing students.

• Journal of Digital Convergence
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• v.20 no.3
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• pp.27-34
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• 2022

In this study, the practical implementation process and performance of cooperation were analyzed by analyzing the cases of collaboration to resolve conflicts related to the installation of military facilities in the cultural heritage protection zone in P city. In addition, through this, factors affecting collaboration were derived. The collaboration case within the cultural heritage protection area of P city, the subject of this study, is an excellent case of collaboration, and in-depth interviews were conducted with the participants in the collaboration. Through these in-depth interviews, the background, collaboration process, performance and success factors of the collaboration task within the P city cultural heritage protection area were examined. The success factors of cooperation related to the installation of military facilities in the cultural heritage protection zone of P city were derived as follows. First, it is important to form a consensus for collaboration, and for this, it is very important to have a common goal of community development. Second, support at the institutional level is essential to successfully induce collaboration. Not only the head of the institution, but also the middle managers need interest in collaboration and various support for it. Third, formal and informal communication between collaboration participants is very important. For collaboration, formal as well as informal communication are important. Through these results of this study, it is judged that it can contribute to inducing collaboration in the local community in the future.