• International Journal of Advanced Culture Technology
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• v.12 no.2
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• pp.144-150
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• 2024

There is no prior research on organizational commitment and supervision for social welfare public officials in charge of public-private cooperation in public welfare fields. Therefore we are designed to determine the impact of social welfare public officials' public-private cooperation awareness on organizational commitment to verify the moderating effect of supervision on the effect between public-private cooperation awareness and organizational commitment. The analysis data is 242 questionnaires collected from Incheon public health and welfare officials visiting towns, villages, and villages in 10 counties. Using the SPSS 22.0 program, descriptive statistics and relationships between variables were analyzed, regression analysis was performed to analyze the influence between variables, and hierarchical regression analysis was performed to verify supervision control. As a result of the study, it was confirmed that the perception of public-private cooperation affects organizational commitment, interacts with supervision satisfaction, and has a moderating effect. Based on this, in order to improve the organizational commitment of social welfare public officials during public-private cooperation work, specific measures were proposed for sharing awareness and understanding between the public and private sectors, establishing an official system, and establishing a supervision system.

• Journal of Information Technology Applications and Management
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• v.31 no.1
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• pp.97-112
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• 2024

In order to verify the factors affecting the acceptance of Serious Games for Healthcare (SGHs), this study developed a hierarchical model of general and specific benefit and risk factors affecting the intention to use SGHs based on the valence framework. As a result based on 199 samples, it was revealed that perceived customization and perceived schedule flexibility had a positive effect on the perceived benefits, which, in turn, had a positive effect on the intention to use SGHs. However, among the specific risk factors, only privacy risk had a positive effect on perceived risk, but it did not have a effect on SGHs usage intention. The results related to the fact that the survey respondents were potential users of SGHs and the bias that may overestimate the benefits provided by SGHs called optimistic bias. Based on these findings, some implications were presented such as the spread and distribution of SGHs to the ordinary persons, improvement of negative perceptions of games, and the need for data-based services to refine customized services for SGHs.

• Korean Journal of Artificial Intelligence
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• v.12 no.3
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• pp.9-15
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• 2024

This paper addresses the critical need for quadcopters in GPS-denied indoor environments by proposing a novel attitude control mechanism that enables autonomous navigation without external guidance. Utilizing AR marker detection integrated with a dual PID controller algorithm, this system ensures accurate maneuvering and positioning of the quadcopter by compensating for the absence of GPS, a common limitation in indoor settings. This capability is paramount in environments where traditional navigation aids are ineffective, necessitating the use of quadcopters equipped with advanced sensors and control systems. The actual position and location of the quadcopter is achieved by AR marker detection technique with the image processing system. Moreover, in order to enhance the reliability of the attitude PID control, the dual closed loop control feedback PID control with dual update periods is suggested. With AR marker detection technique and autonomous attitude control, the proposed quadcopter system decreases the need of additional sensor and manual manipulation. The experimental results are demonstrated that the quadrotor's autonomous attitude control and operation with the dual closed loop control feedback PID controller with hierarchical (inner-loop and outer-loop) command update period is successfully performed under the non-GPS aided indoor environment and it enhanced the reliability of the attitude and the position PID controllers within 17 seconds. Therefore, it is concluded that the proposed attitude control mechanism is very suitable to GPS-denied indoor environments, which enables a quadcopter to autonomously navigate and hover without external guidance or control.

• Journal of Digital Convergence
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• v.10 no.3
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• pp.51-58
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• 2012

The goal of this paper is to set up the rank list of the critical success factors according to its weights. To get the empirical data for this research, the Internet-based questionnaires were performed. This research is carried out in two steps. At first step, the critical success factors(CSF) are crystallized through factor analysis methods. To find out the weights and ranks of critical success factors in second step, the analytical hierarchical process(AHP) method were performed. The order list of all CSFs will be determined according to their priorities. This order list shows which factors have the most useful influence on the performance and success of SCM. This result could play the role as milestone for the effective management of Supply Chain Management System in korean manufacturing company.

• Journal of Digital Convergence
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• v.14 no.10
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• pp.463-472
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• 2016

The study was to research relations among 5 characteristic-factors of participants in sport for all, satisfaction of participation and intention to adhere to exercise. First, the implications of 5 characteristic-factors effect on satisfaction of participation are as blow. Extroversion has a positive effect on psychological satisfaction, satisfaction of relaxation, social satisfaction and physical satisfaction. Openness has a positive effect on satisfaction of relaxation and affinity has a positive effect on social satisfaction and physical satisfaction. Emotional instability has a negative effect on environmental satisfaction. Second, hierarchical regression analysis of 5 characteristic-factors effect on satisfaction of participation and intention to adhere to exercise is as follows. Characteristics-factors of participants have an effect on intention to adhere to exercise in order of extroversion and affinity. Satisfaction of participation has an effect on intention to adhere to exercise in the order of social satisfaction, satisfaction of relaxation and physical satisfaction.

• Child Health Nursing Research
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• v.24 no.4
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• pp.475-483
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• 2018

Purpose: This study aimed to identify stress levels due to end-of-life care, coping strategies, and psychological well-being among nurses in neonatal intensive care unit, and to investigate the effect of stress levels and coping strategies on their well-being. Methods: A total of 128 nurses in the neonatal intensive care units of general hospitals in B city participated. The data were collected using a self-report questionnaire. The collected data were analyzed using descriptive statistics, the t-test, ANOVA, the Pearson correlation coefficient, and hierarchical regression with SPSS version 22.0. Results: The coping strategy that nurses most often used was seeking social support. The factors affecting the well-being of the participants were wishful thinking, problem-focused coping and seeking social support, in order. Those 3 variables explained 21 % of the total variance in psychological well-being. Problem-focused coping and seeking social support were positively associated with psychological well-being, while wishful thinking showed a negative association. Conclusion: In order to improve the psychological well-being of nurses in neonatal intensive care units, it is necessary to provide nurses with a program to build a social support system and to improve their problem-based coping skills.

• Journal of Environmental Science International
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• v.17 no.5
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• pp.485-491
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• 2008

The present study examined the relation between land cover condition and temperature in various types of urban green spaces. The diagram of temperature distribution showed that high-temperature zones are formed around paved areas, and low temperature zone around planted areas and grassy areas. Even in planted areas where low-temperature zones were formed, temperature was different according to hierarchical structure. That is, temperature was relatively low in areas covered with arbor + sub-arbor. With regard to land cover ratio, the increase of planted areas and grassy areas had an effect on the fall of temperature and the effect was higher in order of planted areas and grassy areas. On the contrary, paved areas and bare areas had an effect on the rise of temperature. According to the results of factor analysis, in case of the highest temperature, planted area and grassy area were put together into a factor lowering temperature, paved area and temperature into a factor raising temperature, and bare area alone into a factor of low significance. In case of the lowest temperature, grassy area and bare area were put together into a factor, and the validity of the factor analysis was proved by the analysis of urban heat islands. An increase in the number of trees by height was effective in lowering temperature, and the effect was high in order to arbor and sub-arbor, and the source of coldness in planted area was tall trees.

• Journal of the Korea Institute of Information Security & Cryptology
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• v.26 no.1
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• pp.17-30
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• 2016

In this paper, we propose an efficient public key trace and revoke scheme. An trace and revoke scheme is a broadcast encryption scheme which has a tracing and revocation algorithm. It would maintain security of the scheme to revoke pirate keys which are colluded by malicious users. In addition, property of revocation can be applied to various circumstances because it can help cipher text delivered to certain users who are supposed to. In this paper, we would change the scheme[Augmented broadcast encryption scheme] based on the bilinear groups of the composite order into that of prime order and we can improve the size of public key, secret key, ciphertext considerably. Furthermore, we define property of revocation precisely, so we can obtain the result that the scheme with limited revocation can be expanded to have a full revocation. This paper can be easily applied to the organization such as government, military, which has a hierarchical structure.

• Journal of KIISE:Software and Applications
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• v.27 no.3
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• pp.217-226
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• 2000

In order to develop high quality software, software metrics have been made to assess the quality of software, and recently, many object-oriented metrics have been suggested for this purpose as well. However, research on the utilization of metrics to control software quality in a development process has been inadequate. This is due to the difficulty in assessing the significance of metrics in a software development process from the perspective of overall software quality. In this paper, we propose a method of applying metrics to a development process using the Hierarchical Software Quality Model(H-SQM) which is defined in terms of the products' special features. The method represents the H-SQM as the cause-and-effect diagram and changes the diagram to the process-analysis diagram. And it applies software quality metrics to each development stage by the process-analysis diagram. In this way, we could utilize the software quality metrics efficiently in order to improve the quality of software in the software development process.

• Journal of KIISE
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• v.42 no.3
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• pp.320-327
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• 2015

Although service robots in various fields are being commercialized, most of them have problems that depend on explicit commands by users and have difficulty to generate robust reactions of the robot in the unstable condition using insufficient sensor data. To solve these problems, we modeled mirror neuron and theory of mind systems, and applied them to a robot agent to show the usefulness. In order to implement quick and intuitive response of the mirror neuron, the proposed intention-response model utilized behavior selection networks considering external stimuli and a goal, and in order to perform reactions based on the long-term action plan of theory of mind system, we planned behaviors of the sub-goal unit using a hierarchical task network planning, and controled behavior selection network modules. Experiments with various scenarios revealed that appropriate reactions were generated according to external stimuli.