• Journal of the Korean Society of Manufacturing Process Engineers
• /
• v.14 no.1
• /
• pp.51-56
• /
• 2015

This paper presents an investigation of abnormal wear of a contact jig between a nail and a nail fixture in electric resistance welding. To perform an analysis on the abnormal wear phenomenon, several methods are provided. Based on the theory of electric resistance welding, are analyzed. Using microscopic analysis, surface craters are observed. In the measurement of the electric current flow in the nail fixture, the current flow distribution is measured. From several analyses, the cause of abnormal wear in the contact jig is measured using the electric discharge of high current density at the inflow point of the electric supply to the nail fixture. An alternative shape for normal wear is proposed.

• Computers and Concrete
• /
• v.29 no.5
• /
• pp.279-283
• /
• 2022

The seismic analytic collapse fragility of soil nail wall structures with a shotcrete concrete covering is investigated in this paper. The finite element modeling process has been well described. The fragility function evaluates the link between ground motion intensities and the likelihood of reaching a specific level of damage. The soil nail wall has been subjected to incremental dynamic analysis (IDA) from medium to strong ground vibrations. The nonlinear dynamic analysis of the soil nail wall uses a set of 20 earthquake ground motions with varying PGAs. PGD is utilized as an intensity measure, the numerical findings demonstrate that the soil nailing wall reaction is particularly sensitive to earthquake intensity measure (IM).

• Korean Journal of Human Ecology
• /
• v.16 no.4
• /
• pp.877-884
• /
• 2007

Today the number of economically independent women are increasing in Korea, they have a tendency to pay more attention to their appearance in their social life. Female university students show a high tendency of that kind, especially when they prepare for their job interviews. They purchase beauty products, visit beauty salons and skin care centers to improve their looks. Above all, their interest in nail art is amazingly increasing for maintaining their self-image. This study thus aims at surveying the relationship between college woman's life style and their interest in nail care, by analysing life styles of college women pursuing up-to-date style. The results show that an 'egoistic' type has a high interest in and a high frequency of using a nail care center, and 'egoistic' type's demand for the nail service is equal to or quite higher than 'appearance-oriented' type's. That means that the 'egoistic' type seems to pay much attention to how they look, because they think their neat appearance help to accomplish their ego.

• Journal of Korean Society of Occupational and Environmental Hygiene
• /
• v.27 no.1
• /
• pp.59-69
• /
• 2017

Objectives: The objective of this study is to evaluate the exposure of VOCs and effects of the chemicals on the nail technicians whose works in a nail shop. Methods: For four month from May to August in 2016, we measured twenty-two kinds of VOCs in ten nail shops and carried out health examinations on thirty-four workers in there. Results: The TVOC concentration in indoor air of nail shops is $0.487mg/m^3$ at a minimum and $33.236mg/m^3$ at a maximum where it consists of 70.5% of Ketones, 25.4% of Alcohols, 2.6% of Esters, 0.8% of Aldehydes and 0.7% of Aromatics. The VOCs concentration during nail art works shows an increase in average ratio 1.8 compared to the concentration of indoor air quality and also the concentration of Isopropanol rose with 3.2 of the highest ratio. The results of Spearman correlation between TVOC concentration in indoor air and environmental factor was like that has significance level of correlation(${\rho}$<0.05, r=0.682) in case of number of customers per day, but the other factors were not meaningful in correlation. Correlation between VOCs and medical check-up items was like that has positive significance level(${\rho}$<0.01, r=0.638) between isopropanol and GPT, but the others have not meaningful. The exposure level of VOCs was not exceed the criteria exposure level 1 of working environment measuring method which announced by labor ministry in all ten nail shop indoor air quality. Conclusions: In this study although it was not significant correlation between harmful substances and medical check-up items in the nail shop indoor air quality, it is necessary to do more ventilation and to install exhaust facilities because of existing high VOCs concentration in the nail shop indoor air.

• Journal of the Korea Convergence Society
• /
• v.10 no.9
• /
• pp.301-309
• /
• 2019

This research's purpose is figuring out the influencing factor on nail salon visitors recommendation intention. For this research, survey data of 305 men and women in their 10s to 50s were gathered in the area. Gathering the surveys, 170 people who did not have insincere response and problematic toenails were excluded. The rest 135 was used for the study. After analyzing the outcome (F=5.588, p<.01), from problematic toenails in the ingrown toenails there was a statistical significant difference. In foot care and location, the difference effectiveness is care/home remedy/pharmacy.(F=4.319, p<.01). Looking at recommendation intention for problematic toenails at the nail salon (F=15.152, p<.01). In addition, is it possible for the nail salon to improve as well as to prevent problematic toenails, can the nail salon care for problematic toenails, foot care behavior, intention of visiting nail salon on recognition of professionalism influences on nail salon recommendation intention by statically appeared to be significant (F=16.847, p<.001). Therefore, this research recognizes and raises the nail salon visitors quality on problematic toenails. Following problematic toenails type, we can further extend to improve as well as to prevent judging from the given data.

• Journal of Industrial Convergence
• /
• v.20 no.3
• /
• pp.81-87
• /
• 2022

The purpose of this study is to investigate the actual conditions of students before and after acquiring national technical qualifications for nail cosmetologists, and to provide basic data for building systematic data according to students' competency and effective educational methods for acquiring qualifications. The statistical package program SPSS v 18.0 was used for the trend of acquiring national technical qualifications for nail cosmetologists among each variable according to careers in the nail beauty industry for nail beauty students residing in Gwangju. As a result of using the statistical package program SPSS v 18.0, the analysis showed that the proportion of women (80.8%), single (70.8%), 20s (47.7%), college or university graduates (26.2%), and students (42.3%) was high. In addition, as a result of cross-analysis of the period and cost according to gender for obtaining the national technical license of the nail beautician, it was concluded that the Pearson chi-square significant probability (p) was .416 and .899, respectively, and there was a difference between men and women. The field experience of the nail beauty industry was found to have a significant positive (+) effect on the training period, course cost, educational institution, and exam experience (p <.001) for obtaining a certificate. Based on the results of this study, it is necessary to promote the development of nail beauty marketing and to present a constructive vision of the nail beauty industry to be pursued in the future.

• Journal of Advanced Technology Convergence
• /
• v.2 no.2
• /
• pp.49-55
• /
• 2023

As interest in "beauty" increases due to the improvement of a high cultural level, job stress and emotional labor caused by nail workers working are gradually increasing, and it is judged that it should be solved in the beauty industry. This study investigated the effect of working stress and emotional labor on turnover intention of nail workers, and the survey tool was a questionnaire for 250 nail industry workers in Daejeon and Chungcheong. The SPSS 21.0 statistical program was used to analyze the collected data, and the research results showed that job stress and emotional labor of nail workers had a statistically significant correlation with turnover intention, indicating that there was a correlation between general job stress and emotional labor. Therefore, it is considered very important for research in this field to analyze the impact of job stress and emotional labor on turnover of nail industry workers and to provide basic data necessary for the development of this field, job satisfaction improvement, and work stress response. In order to establish the nail field as a part of the growing beauty industry, it is expected that there will be better research results if the turnover rate is reduced and compared and analyzed to improve job satisfaction through analysis of the causes of job stress and emotional labor of nail industry workers.

• Journal of the Korean GEO-environmental Society
• /
• v.13 no.11
• /
• pp.19-26
• /
• 2012

In the present study, anchor type nail with PC-strand which can add up the pre-stress at the nailing to increase the resistance and shear stress in the whole ground has been investigated. Load-displacement and wall displacement have been analyzed by experimental model and numerical analysis of anchor type nail, nailing, and non-nailing to examine the behavior of anchor type nail. From the experimental results, it was found that horizontal displacement is considerably decreased according to increasing the load in case of anchor type nail added pre-tension. Especially, it was observed that resistance of displacement at the upper wall is increased. The results of numerical analysis show the same results of experimental results.

• Journal of the Korea Fashion and Costume Design Association
• /
• v.17 no.1
• /
• pp.53-68
• /
• 2015

The purpose of this study is to analyze check pattern of nail art from 2011 to 2013. The results of this study are as follows; 1) Check pattern of nail art is total 257 patterns, and there are 84 argyle, 29 tartan, 24 harlequin, 24 over, 23 window-pane, 15 stitcheds, 13 hound tooth, 10 block, 10 madras, 8 gingham, 8 gradation, 7 shepherd, and 2 tattersall check patterns. Through this result, in nail art, the relatively simple patterns such as a vertical pattern, a horizontal pattern, and cross or overlap diagonal line are used more than elaborate and complex check patterns of a fibrous tissue from a weaving process. 2) In check pattern of nail art, N-affiliated color and R-affiliated color are remarkably well-used, because of the effects of argyle, tartan, window-pane, harlequin, stitched, over, and hound tooth check patterns used the most during the past three years. Especially, most tartan, harlequin, over, and hound tooth check patterns use their own special colors such as R-affiliated colors and N-affiliated colors as it is, and argyle, window-pane, stitched, and over check patterns use well by arranging N-affiliated colors and R-affiliated colors. 3) The most used expressive technique is hand painting to express check pattern in nail art, because new products related to UV gel are well launched. These materials can draw fine line that is hard to express by existing polish easily and simply, and not only have set quickly hard, so procedure time is very short, so it is compatible to draw check pattern personally, but also it is well covered, so check pattern is more clearly expressed.

• Journal of Chest Surgery
• /
• v.41 no.5
• /
• pp.675-678
• /
• 2008

A 42-year-old male was admitted because of an anterior neck injury due to accidental firing of a nail gun. On chest X-ray, the nail was stuck in the anterior neck, migrated to the chest, and then to the abdomen. Only the trachea was damaged, leaving no injury in the esophagus. The nail in the intestine was removed by colonoscopy. The patient showed complete recovery without complications after fasting and conservative treatment. We report this case with a literature review.