• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2004.05b
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• pp.429-433
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• 2004

In games and films, the most highlighted fields in entertainment industry, those special effects such as flame, explosion, smoke, liquid, snow, rain and dust are generated through the particle system. Special effects can be expressed realistically by the particle system API that is a graphic library of high level in game and virtual reality. When developers apply the particle system API in applications, they must exchange parameters repeatedly and compile source codes until special efforts that they want are expressed, and It takes much time until the minute control that have relations between each parameters. This paper develops a particle system API usable in on-line game and real-time virtual reality and presents particle system editor that can see and create special effect easily through attributes adjustment such as position, velocity, color, transparency, size, age, the secondary position, the second velocity etc.

• Journal of the Korea Convergence Society
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• v.10 no.9
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• pp.283-289
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• 2019

This study intends to examine how authentic leadership affects psychological well-being and job performance among flight attendants. To test hypotheses, this study performed survey to flight attendants of big airlines in Korea for about two months from October 1 to December 5, 2018. 200 copies of the questionnaire was distributed, and 180 were collected. Among them, 21 copies where many questions were unanswered or not very seriously answered were discarded. So, 159 copies in total were used for analysis. Statistical analysis was done with SPSS 22.0 and AMOS 21.0. The results are as follows. First, balanced information processing, self-awareness, self-awareness have significant effect on psychological well-being, while relational transparency have not. Second, psychological well-being have significant effect on job performance. Consequently, all the hypotheses in this study except for hypothesis 1-3 were adopted.

• International Journal of Industrial Entomology and Biomaterials
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• v.45 no.2
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• pp.56-69
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• 2022

Silk is a unique natural biopolymer with outstanding biocompatibility, high mechanical strength, and superior optical transparency. Due to its excellent properties, silk has been widely reported as an ideal biomaterial for several biomedical applications. Recently, fluorescent silk protein, a variant of native silk, has been reported as a biophotonic material with the potential for bioimaging and biosensing. Despite the realization of fluorescent silk, the traditional degumming process of fluorescence silk is crude and often results in fluorescence loss. The loss of fluorescent properties is attributed to the sensitivity of silk fibroin to temperature and solvent concentration during degumming. However, there is no comprehensive information on the influence of these processing parameters on fluorescence evolution and decay during fluorescent silk processing. Therefore, we conducted a spectroscopic study on fluorescence decay as a function of temperature, concentration, and duration for fluorescent silk cocoon degumming. Sodium carbonate solution was tested for degumming the fluorescent silk cocoons with different concentrations and temperatures; also, sodium carbonate solution is combined with Alcalase enzyme and triton x-100 to find optimal degumming conditions. Additionally, we conducted a molecular dynamics study to investigate the fundamental effect of temperature on the stability of the fluorescent protein. We observed degumming temperature as the prime source of fluorescent intensity reduction. From the MD study, fluorescence degradation originated from the thermal agitation of fluorescent protein Cα atoms and fluctuations of amino acid residues located in the chromophore region. Overall, degumming fluorescent silk with sodium carbonate and Alcalase enzyme solution at 25 ℃ preserved fluorescence.

• Korean Journal of Construction Engineering and Management
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• v.20 no.5
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• pp.83-94
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• 2019

Recently, the proportion of overseas orders of domestic construction companies is increasing, and the global market demands management transparency on corporate social responsibility activities. Therefore, domestic companies are faced with the need to systematically prepare for social responsibility activities. The purpose of this study was to examine whether CSR activities have a moderating effect on the relationship between organizational trust, job satisfaction, turnover intention and contract type. This study analyzed the effect of CSR activities on organizational trust, job satisfaction and turnover intention. The study targets regular and irregular workers in construction companies who promote CSR activities through the homepage, public service ad, and media. The questionnaire distributed 300 copies online. The final valid sample is 255 (145 Regular and 110 Irregular). Empirical analysis used a structural equation model. The results of the study are as follows. First, in CSR activities, economic responsibility, philanthropic responsibility and ethical responsibility had a positive (+) effect on organizational trust. Second, organizational trust had a positive (+) effect on job satisfaction in CSR activities. Finally, the magnitude of the Moderate effect of the type of labor contract according to the group classification showed that the CSR activity on organizational trust had many regular employees with economic responsibility. Also, organizational trust in job satisfaction was found to be large in regular employees. The results of this study can be a guide to CSR activities of construction companies in terms of organizational effectiveness.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.20 no.8
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• pp.548-559
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• 2019

Today, companies are enhancing their management transparency by implementing a variety of methods such as adopting a Code of Business Ethics to achieve sustainable management that enables long-term, stable development in a rapidly changing business environment. Management's ethical leadership is the core competence of human capital to secure competitive advantage in any enterprise. This study examined the effect of ethical leadership on employees' turnover intention and the mediating effect of empowerment in the relationship between ethical leadership and employees' turnover intention. The study data were collected from a survey of 304 employees of Seoul and Gyeonggi-based companies from March 6 to March 27, 2019. SPSS 23.0 and AMOS 23.0 were used for data analysis. From the analysis results, first, the leader's ethical leadership has a statistically significant impact on empowerment. Second, the management's ethical leadership has a significant negative influence on employees' turnover intention. Third, empowerment has a negative effect on employees' turnover intention. Fourth, empowerment has a mediating effect on the relationship between the management's ethical leadership and employees' turnover intention.

• Journal of Korea Society of Industrial Information Systems
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• v.18 no.5
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• pp.107-117
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• 2013

In order to enhance the performance of National R&D program, it is required not only the R&D funds and human resources, but also the composition of the research environment in which the researchers could fully concentrate on study. Particularly in Korea, executive burdens that arise in the course of the administration of research fund are frequently causing difficulties in concentrating on study. To remove this burden on financial management and maximize the efficiency of research funding, the government has implemented the central management system of the R&D fund. This study analyzed the moderating effects of the centralized management system of the R&D fund on the relationship between government fund and performance of the university research. Based on the analyzed result, this study concluded that the higher level of centralized management system of the R&D fund is implemented, the more influence on research outcomes grow. This study is significant to extend previous research point of view, as well as analyze the practical effect of government policies.

• The Journal of Asian Finance, Economics and Business
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• v.7 no.12
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• pp.445-453
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• 2020

Independence is a factor which has a significant impact on auditing quality, especially in the recent times where the marketplace is increasingly demanding transparency. The independence of auditors is assessed based on the main criteria such as the reliability of the audit opinions, the accuracy, truthfulness of financial reports, and the objectivity in the opinions of the auditor. The study investigates the effects of non-audit services (NAS) on auditor independence in emerging economies such as Vietnam. Non-audit services include taxation services, management advisory services and outsourcing internal audit services. Based on previously relevant researches, the authors develop hypotheses and a regression model about non-audit services (independent variables) and audit independence (dependent variable). The research collects data by 5-scale Likert questionnaire. The findings indicate the relationship between NAS and auditor independence. Specifically, the results reveal two main factors that have influence on auditor independence, namely, taxation services and management advisory services. The results of our research can be considered as new findings and can be compared to previous researches in Vietnam, which establishes a new viewpoint about the relationship between the NAS and the independence of the auditor. This result can be implemented for countries or jurisdictions which are similar to Vietnam.

• The Journal of the Acoustical Society of Korea
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• v.33 no.5
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• pp.291-299
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• 2014

To probe the temperature elevation effect caused by ultrasound, a tissue mimicking phantom was newly suggested. A carrageenan gel was adopted to realize not only the required transparency for visualization but also acoustic characteristics similar to human tissue. To visualize the temperature elevation inside phantom, thermochromic film with a critical temperature of discoloration was introduced. Acoustic characteristics of the tissue mimicking phantom were examined when the concentrations of carrageenan and sucrose changed. As the results, the attenuation coefficient of the phantom could be controlled in the range of 0.44~0.49 dB/cm/MHz, and the acoustic impedance in the range of 1.52~1.77 Mrayls. We could control the acoustic characteristics of the phantom by different concentration of carrageenan and sucrose, and it was possible to examine the temperature elevation caused by ultrasound in the phantom. The suggested method was verified by noninvasively visualizing the temperature elevation due to planar and focused ultrasound using the fabricated phantom.

• Proceedings of the Korean Vacuum Society Conference
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• 2016.02a
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• pp.196.1-196.1
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• 2016

TCO(Transparent Conducting Oxide) on flat glass is used in thin-film photovoltaic cell, flat-panel display. Nowadays, Corning(R) Willow Glass(R), known as flexible substrate, has attracted much attention due to its many advantages such as reliable roll-to-roll glass processing, high-quality flexible electronic devices, high temperature process. Also, it can be an alternative to flexible polymer substrates which have their poor stability and degradation of electrical and optical qualities. For application on willow glass, the flexibility, electrical, optical properties can be greatly influenced by the TCO thin film thickness due to the inherent characterization of thin film in nanoscale. It can be expected that while thick TCO layer causes poor transparency, its sheet resistance become low. Also, rarely reports were focusing on the influence of flexible properties by varying TCO thickness on flexible glass. Therefore, it is very important to optimize TCO thickness on flexible Willow glass. In this study, Ti-ZnO thin films, with different thickness varied from 0 nm to 50 nm, were deposited on the flexible willow glass by atomic layer deposition (ALD). The flexible, electrical and optical properties were investigated, respectively. Also, these properties of Ti-doped ZnO thin films were compared with un-doped ZnO thin film. Based on the results, when Ti-ZnO thin films thickness increased, resistivity decreased and then saturated; transmittance decreased. The Figure of Merit (FoM) and flexibility was the highest when Ti-ZnO thickness was 40nm. The flexible, electrical and optical properties of Ti-ZnO thin films were better than ZnO thin film at the same thickness.

• Journal of the Korean Society for information Management
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• v.23 no.1 s.59
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• pp.139-158
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• 2006

University library in university organization needs more to innovating with through information management systems. In this paper introduced IMS to university library in Korea. In this paper investigated difference of recognition between college and university about IMS. The samples (n=67) were composed of those who had already engaged in university library and college. The results of this study were as follows; Most participants who was considerate no more important to mind for IMS introduction. Then, the results of ANOVA analysis was recognized employee's about IMS that among of the best problems was negative(-) effect to introduction necessary and introduction timeless of IMS was insignified with F=0.469(p=0.497), sig=0.05. and F=2.410(p=0.125), sig=0.05. By the way, education necessary of IMS was signified with F=7.470(p=0.008), sig=0.01. Finally, in this paper provided the fundamental data for the standardization and transparency related to policy establish of university library for introducing of IMS.