• Fashion & Textile Research Journal
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• v.24 no.6
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• pp.719-730
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• 2022

This study explored the impact of beauty influencers' characteristics and product characteristics on new product acceptance intentions and studied the mediating effects of consumer trust in this process. A survey was conducted from February 22, 2021, to February 28, 2021, with Gen Y and Gen Z women in China, and 379 questionnaires were analyzed. The conclusions are as follows: First, the characteristics of beauty influencers are authenticity and expertise, similarity, attractiveness, interactivity, familiarity, and trustworthiness; product characteristics are cost, image, product quality, product perception, sales promotion, and sustainability. Second, partial beauty influencers' characteristics and partial product characteristics have a positive impact on consumer confidence and acceptance intention of the new product. Third, the mediating effect of consumer trust in the process by which beauty influencers' characteristics and product characteristics influence the intention of new product acceptance was determined. Therefore, when beauty companies use influencers in marketing, it is necessary to understand their characteristics, consider their professionality and authenticity, examine their reliability, and assess their ability to form connections with images and viewers that match their products. Additionally, to increase the acceptance intention of new products, companies should present the price of high-quality products, product sensibilities, and corporate images of products and establish measures that can positively affect consumers' acceptance intention of new products by combining them with the characteristics of beauty influencers.

• Anxiety and mood
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• v.19 no.1
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• pp.10-18
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• 2023

Objective : The 18-item Obsessive-Compulsive Inventory-Revised (OCI-R) is widely employed to assess symptoms of obsessive-compulsive disorder (OCD). However, this instrument's factor structure does not align with contemporary dimensional models of OCD. Therefore, the objective of this study was to examine psychometric properties of the 12-item Korean OCI (OCI-12) on four obsessive-compulsive symptom dimensions, in patients with OCD. Methods : A total of 157 patients with OCD and 51 healthy controls completed psychological measures, including the OCI-R, Dimensional Obsessive-Compulsive Scale (DOCS), and scales evaluating anxiety and depressive symptoms. Pychometric characteristics of the OCI-12 with three neutralizing and three hoarding items eliminated from the OCI-R, were analyzed. Results : All OCI-12 items registered excellent internal consistency at 0.83. Confirmatory factor analysis revealed strong association between individual items and their proposed latent factors (i.e., subscales). Convergent validity was appropriate. A high correlation was particularly observed for the DOCS score (r=0.71, p<0 .001). Moreover, the OCI-12 was as sensitive as the OCI-R for determining effects of empirically supported treatment for OCD. Conclusion : The OCI-12 is a 12-item measure that adheres to the prevailing 4-factor model of OCD dimensions. Like OCI-R, it possesses good to excellent psychometric properties, including reliability, validity, and sensitivity to treatment.

• Journal of Creative Information Culture
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• v.5 no.3
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• pp.265-273
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• 2019

This study develops and examines the validity of a Creativity Test for children from of 4 to 7. 47 items were constructed through the validity of the literature and expert's content validity. The results of this study consisted of 22 items with three factors. These factors are flow and independence, expansion of thinking, curiosity and openness. The tests scale was examined about item's response distribution, item's discrimination, and construct validity and internal consistency reliability, and it was adoptable. It can be concluded that the test tool developed in this study is suitable for measuring the creativity of Korean children from 4 to 7 years in a simple manner, and it measures relatively well the cognitive and affective characteristics of creativity. Creativity test tool for children from 4 to 7 years in this study will contribute to the active progress of research on creativity for young children and elementary school children.

• Journal of Sensor Science and Technology
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• v.32 no.3
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• pp.140-146
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• 2023

Water quality is crucial for human health and the environment. Accurate measurement of the quantity of organic carbon in water is essential for water quality evaluation, identification of water pollution sources, and appropriate implementation of water treatment measures. Total organic carbon (TOC) analysis is an important tool for this purpose. Although other methods, such as chemical oxygen demand (COD) and biochemical oxygen demand (BOD) are also used to measure organic carbon in water, they have limitations that make TOC analysis a more favorable option in certain situations. For example, COD requires the use of toxic chemicals, and BOD is time-consuming and can produce inconsistent and unreliable results. In contrast, TOC analysis is rapid and reliable, providing accurate measurements of organic carbon content in water. However, common methods for TOC analysis can be complex and energy-intensive because of the use of high-temperature heaters for liquid-to-gas phase transitions and the use of acid, which present safety risks. This study focuses on a TOC analysis method using TiO₂ photocatalysis, which has several advantages over conventional TOC analysis methods, including its low cost and easy maintenance. For TiO₂, rutile and anatase powders are mixed with an inorganic binder and spray-coated onto a glass fiber substrate. The TiO₂ powder and inorganic binder solutions are adjusted to optimize the photocatalytic reaction performance. The TiO₂ photocatalysis method is a simple and low-power approach to TOC analysis, making it a promising alternative to commonly used TOC analysis methods. This study aims to contribute to the development of more efficient and cost-effective approaches for water quality analysis and management by exploring the effectiveness and reliability of the developed equipment.

• Journal of the Korea Convergence Society
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• v.13 no.1
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• pp.253-259
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• 2022

This study aims to provide a basis for preparing specific welfare measures for healthy lives of those who have lost vitality due to COVID-19 by identifying the Korean people's level of fear of COVID-19 and vaccine acceptability, and by examining people's life satisfaction. . The research results are as follows. First, the fear of coronavirus perceived by the survey subjects was found to be very high. Second, when compared to other vaccines against coronavirus, fear or fear of the vaccine was significantly higher. Third, the vaccine acceptance of adults perceived by the survey subjects was positive. Fourth, the reliability of the government policy on the coronavirus prevention vaccine was found to be relatively high. Fifth, in the evaluation of quality of life, economic satisfaction was lower than in other areas, and emotional satisfaction was found to be relatively high compared to other areas.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2021.05a
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• pp.244-245
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• 2021

Recently, A fever test is essential in a crowded places over the world because of COVID-19. A fever test is also conducted for visitors through a thermometer or a thermal imaging camera In Korea leading world with K-quarantine. However, the current body heat measurement process is divided into the steps of body heat examination and entry register. Therefore, access control person must be deployed at the entrance. In addition, since the accessor directly measures body heat and records personal information, the reliability of the information is low and the risk of personal information leakage is high. Therefore, in this paper, we consider the non-face-to-face smart authentication fever detector and propose a smart authentication process to unify the process for dualized body heat measurement and access recording.

• Restorative Dentistry and Endodontics
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• v.46 no.2
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• pp.23.1-23.11
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• 2021

Objectives: This study assessed the reliability of digital color measurements using images of resin composite specimens captured with a cellphone. Materials and Methods: The reference color of cylindrical specimens built-up with the use of resin composite (shades A1, A2, A3, and A4) was measured with a portable spectrophotometer (CIELab). Images of the specimens were obtained individually or pairwise (compared shades in the same photograph) under standardized parameters. The color of the specimens was measured in the images using RGB system and converted to CIELab system using image processing software. Whiteness index (WI_D) and color differences (ΔE₀₀) were calculated for each color measurement method. For the cellphone, the ΔE₀₀ was calculated between the pairs of shades in separate images and in the same image. Data were analyzed using 2-way repeated-measures analysis of variance (α = 0.05). Linear regression models were used to predict the reference ΔE₀₀ values of those calculated using color measured in the images. Results: Images captured with the cellphone resulted in different WI_D values from the spectrophotometer only for shades A3 and A4. No difference to the reference ΔE₀₀ was observed when individual images were used. In general, a similar ranking of ΔE₀₀ among resin composite shades was observed for all methods. Stronger correlation coefficients with the reference ΔE₀₀ were observed using individual than pairwise images. Conclusions: This study showed that the use of cellphone images to measure the color difference seems to be a feasible alternative providing outcomes similar to those obtained with the spectrophotometer.

• Journal of Korean Society of Industrial and Systems Engineering
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• v.46 no.3
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• pp.285-292
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• 2023

As various accidents have occurred in underground spaces, we aim to improve the quality validation standards and methods as specified in the Regulations on Producing Integrated Map of Underground Spaces devised by the Ministry of Land, Infrastructure and Transport of the Republic of Korea for a high-quality integrated map of underground spaces. Specifically, we propose measures to improve the quality assurance of pipeline-type underground facilities, the so-called life lines given their importance for citizens' daily activities and their highest risk of accident among the 16 types of underground facilities. After implementing quality validation software based on the developed quality validation standards, the adequacy of the validation standards was demonstrated by testing using data from two-dimensional water supply facilities in some areas of Busan, Korea. This paper has great significance in that it has laid the foundation for reducing the time and manpower required for data quality inspection and improving data quality reliability by improving current quality validation standards and developing technologies that can automatically extract errors through software.

• Industry Promotion Research
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• v.8 no.4
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• pp.81-89
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• 2023

This study aims to provide basic data to increase the happiness of college students by verifying whether a growth mindset moderates the mediating effect of teachers' autonomy support for students in the relationship between academic achievement and happiness. The survey subjects were intentionally sampled from 396 engineering students attending a university in Guangzhou who performed a business practice project. The questionnaire method was used to collect data, and the collected data was analyzed using SPSS PC+ Win. 27.0 and PROCESS macro 4.2. The applied statistical techniques were frequency, reliability, correlation, and moderated mediation effect analysis. The research results are as follows. First, there was a significant positive correlation between academic achievement, teachers' autonomy support, growth mindset, and happiness. Second, a growth mindset played a role in increasing the impact of academic achievement on happiness through teachers' autonomy support. Therefore, it was confirmed that a growth mindset increases the mediating effect of teachers' autonomy support in the relationship between academic achievement and happiness. Based on the research results, measures to improve the happiness of college students were suggested.

• Journal of Sensor Science and Technology
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• v.32 no.5
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• pp.290-294
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• 2023

Among various types of harmful gases, hydrogen sulfide is a strong toxic gas that is mainly generated during spillage and wastewater treatment at industrial sites. Hydrogen sulfide can irritate the conjunctiva even at low concentrations of less than 10 ppm, cause coughing, paralysis of smell and respiratory failure at a concentration of 100 ppm, and coma and permanent brain loss at concentrations above 1000 ppm. Therefore, rapid detection of hydrogen sulfide among harmful gases is extremely important for our safety, health, and comfortable living environment. Most hydrogen sulfide gas sensors that have been reported are electrical resistive metal oxide-based semiconductor gas sensors that are easy to manufacture and mass-produce and have the advantage of high sensitivity; however, they have low gas selectivity. In contrast, the electrochemical sensor measures the concentration of hydrogen sulfide using an electrochemical reaction between hydrogen sulfide, an electrode, and an electrolyte. Electrochemical sensors have various advantages, including sensitivity, selectivity, fast response time, and the ability to measure room temperature. However, most electrochemical hydrogen sulfide gas sensors depend on imports. Although domestic technologies and products exist, more research is required on their long-term stability and reliability. Therefore, this study includes the processes from electrode material synthesis to sensor fabrication and characteristic evaluation, and introduces the sensor structure design and material selection to improve the sensitivity and selectivity of the sensor. A sensor case was fabricated using a 3D printer, and an Ag reference electrode, and a Pt counter electrode were deposited and applied to a Polytetrafluoroethylene (PTFE) filter using PVD. The working electrode was also deposited on a PTFE filter using vacuum filtration, and an electrochemical hydrogen sulfide gas sensor capable of measuring concentrations as low as 0.6 ppm was developed.