• Transactions of the Korean Society for Noise and Vibration Engineering
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• v.23 no.7
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• pp.669-674
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• 2013

To design the optimized low noise planetary gear sets, a program called pRMC(planetary run many cases) is developed. The pRMC is especially using a combination analysis method for all gear specifications and also able to analyze any type of planetary gear sets. The pRMC is composed of the 5 sections those are generate, setting, evaluate, combine and analysis. After calculating all candidate gear sets, the pRMC could show many results that represent the character of each gear set including the transmission error which is the main gear noise factor, the contact ratios, the bending stress and so on. By comparing the results objectively, user could predict and select the optimized gear set which has quiet noise level and desired durability. The planetary gear designed by pRMC could have reduced noise and vibration level from 5 to 10 dB than previous-designed one.

• Proceedings of the SAREK Conference
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• 2006.06a
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• pp.325-330
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• 2006

Modern people spend more and more time in an automobile in their daily life. In this life, drivers and passengers should create HVAC environment in the automobile interior which is not only for convenient transportation but also give comfortable feeling with dwelling culture. Also, the latest cars give much importance for the role of HVAC system that controls the environment of the area for passengers more than just basic capability. There are solar radiant heat, surface temperature, refrigeration system(temperature, humidity, air current, velocity), and dust for the factor which have an effect on the HVAC environment in the automobile interior, also these are being carried for the HVAC environment delivered an individual character. In this study, we drew the automobile interior as three dimension and arranged a method of numerical analysis on HVAC environment in the automobile interior displaying air current distribution and temperature distribution through simulation of the automobile interior on the ventilation volume and outlet area. The aim of this study is to develop the estimated method for HVAC environment. in the automobile interior.

• International journal of advanced smart convergence
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• v.8 no.1
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• pp.166-175
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• 2019

Grit, a concept conceived in 2007 by Duckworth and others in the United States, is based on positive psychology that focuses on growth and development through individual strengths. Recently, "Grit", which means patience and enthusiasm for long-term goals, has emerged as a key factor of personality strength. In Korea, Joo-hwan Kim (2013) was the first to conceptualize and study the subject of Grit. However, there have been no overview studies that systematically summarize the overall trends and flow in the research of Grit so far. There have been 147 research papers on Grit published so far in Korea. The purpose of this study was to conduct trend analysis on the subject of Grit by analyzing forty-three (43) master's and doctoral dissertations, thus presenting the direction of future research on Grit through careful analysis. In the studies conducted, it was found that Grit is a very significant variable linked to self-efficacy. It is also a subjective belief that can help an individual achieve his/her educational goals, and go through failure resynchronization. In addition, Grit is very significant as a practical core indicator of how fusion talent is fostered for the fourth industrial revolution. Therefore, there is a need for more in-depth research from the viewpoints of workplace learning, experiential learning, or informal learning, as well as research into Grit characteristics.

• Journal of the Korea Fashion and Costume Design Association
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• v.21 no.3
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• pp.55-66
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• 2019

The makeup experience service in a theme park was analyzed for the study on the makeup service using experiential marketing based on recent consumer experience. The results of the study showed that the utilization, marketing effect, and lifestyle in makeup service at the Experiential marketing are analyzed. In other words, according to the variables, the purpose of this study is to the effect on the satisfaction, loyalty, and Intent to revisit. In this study, in order to achieve this, literature research and Empirical study on the same time. In literature review, Theories and previous studies were considered which are about experience marketing, lifestyle, makeup service, loyalty, satisfaction, and the intent to revisit. Then, a research model and a hypothesis were established. In empirical study, Based on this, it was applied to the makeup service in a theme park and verified through analysis methods such as frequency analysis, reliability verification, factor analysis, and structural equation modeling. The results showed that experience marketing and lifestyle had a significant influence on satisfaction, loyalty, and return visit intention. Based on this research, the makeup service using experience marketing would be hopefully more practical as a typical culture content marketing.

• Fashion & Textile Research Journal
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• v.21 no.1
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• pp.104-111
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• 2019

This study was developed using the DTP (digital textile printing) jacquard fabrics with a three-dimensional pattern for bag and evaluated the preference and emotional structure. The following conclusions were obtained. Three-dimensional patterns of 12 species using the illustrator program, including six kinds of designs based on the text and six kinds of character types based on the geometry of the basic design was developed. As a result of evaluating the preference of the three-dimensional pattern jacquard fabric, the most preferred fabric was a three-dimensional patterned jacquard fabric with a motif of the Korean consonant "ㅅ". The results of analyzing the emotional dimension of the three-dimensional pattern jacquard fabric, eight factors including simple image, feminine image, exotic image, graphic image, sporty image, masculine image, dynamic image and stereoscopic image were derived. Between emotional factors and preferences correlation analysis showed the stronger the simple image, the feminine image, and the sporty image, the more preferable. It suggested the possibility of a morphological and new fabric for bag, textile design motifs by using Hangul consonants attempt to limit the flatness of the existing geometric form patterns that can be applied to three-dimensional bag whether swirly patterns overcome.

• Bulletin of the Korean Chemical Society
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• v.15 no.2
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• pp.150-153
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• 1994

By treating mer, trans-Re(${\equiv}NC_6H_5)(PPh_3)_2Cl_3$, Ⅰ, with 5 atm of CO at room temperature for 52 h, fac-Re(${\equiv}NC_6H_5)(CO)(PPh_3)Cl_3$, Ⅱ, was obtained as dark green precipitates in 81% yield. The crystal structure of Ⅱ was determined through X-ray diffraction. Ⅱ crystallizes in the monoclinic system, space group $P2_1/n$ with cell parameters a=9.740 (2) ${\AA}$, b=16.210 (5) ${\AA}$, c=16.192 (6) ${\AA}$, ${\beta}$=97.50 $(2)^{\circ}$, and Z=4. Least-squares refinement of the structure led to a R$(R_w)$ factor of 0.030 (0.036) for 2878 unique reflections of I>3${\sigma}(I)$ and for 241 variables. In comparison to the starting material Ⅰ, the bond distance of Re-N became longer from 1.726 (6) to 1.736 (5) ${\AA}$ and the bond angle of Re-N-C(Ph) became smaller from 172.6 (6) to 167.0 $(2)^{\circ}$, indicating that the Re-N bond in Ⅱ is weakened and has a less triple-bond character than that in Ⅰ.

• 대한상한금궤의학회지
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• v.12 no.1
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• pp.49-60
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• 2020

Objective: To explore the meaning of 虛in Shanghanlun through two cases. Methods: We analyzed the original form of 虛and the contexts in Shanghanlun. Concurrently, we report two clinical cases treated with Chijasi-tang according to the newly deduced definition of 虛. Results: 虛is composed of 丘and 虍, which means a tiger on a large hill. Here, the meaning of "empty"was derived. In both cases, sleep disorders and heart stuffiness were the chief complaints, which were confirmed to occur under 虛's circumstances. Therefore, Chijasi-tang was administered to two patients with a feeling of emptiness as a pathogenic factor, and improvements were confirmed in both cases. Conclusions: In 15 provisions of Shanghanlun, 虛is defined as "a feeling of emptiness"instead of of "deficient,"which was widely used previously, and appears clinically as "emptiness after being hurt by someone."This definition was applicable in both cases.Further study of the other characters is needed because the previously used meaning may be different in the 15-character provisions of the Shanghanlun.

• ALGAE
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• v.37 no.3
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• pp.239-247
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• 2022

Enzyme-assisted hydrolysis is frequently used as a cost-effective and efficient method to obtain functional ingredients from bioresources. This study involved the enzyme-assisted hydrolyzation and purification of fucoidan from Ecklonia maxima stipe and the investigation of its anti-inflammatory activity in lipopolysaccharide (LPS)-induced RAW 264.7 cells. Fucoidans of Viscozyme-assisted hydrolysate from E. maxima (EMSFs) harvested in Jeju, Korea. Structural and chemical characterizations were performed using fourier transform infrared spectroscopy, scanning electron microscope, and monosaccharide analysis. Among fucoidans, EMSF6 was rich in fucose and sulfate and had a similar structural character to commercial fucoidan. EMSF6 showed a strong inhibitory effect on nitric oxide generation in LPS-induced RAW 264.7 cells and significantly decreased the production of LPS-induced pro-inflammatory cytokines, including interleukin-6, interleukin-1β, and tumor necrosis factor α. The anti-inflammatory potential of EMSF6 was mediated through the downregulation of inducible nitric oxide synthase and cyclooxygenase-2 expression. Thus, fucoidans from E. maxima stipe are promising candidates for functional food products.

• The Journal of Korean Society for School & Community Health Education
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• v.8 no.1
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• pp.43-54
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• 2007

This study aimed at investigating the level of high school students' entrance exam stress and mental health first and also investigating if the entrance exam stress and mental health are related to gender, grade, character type, parenting style and economic status. This is expected to be used as a fundamental data for the development of health education program on high school students' stress and diagnosis of their mental health. To achieve those goals above, the questionnaire was used and the sample consisted of 600 students from general high schools in a large city, C and in a smaller city, A in Chungnam province through questionnaire and the conclusion, which was based on 582 proper questionnaires from the 600 questionnaires, through variable analysis, correlation analysis and multi-regression, is below. First, according to the information provided by respondents, the result showed the relationship between those background variables and the entrance exam stress and mental health level. As the students are more introverted and the parenting style is more authoritative, the entrance exam stress is higher and the mental health level is higher as the parenting style is more authoritative and the economic status is lower. In gender, the entrance exam stress level was high for male students in regard to parents pressure. For female students, it was due to the insufficient free time. In test performance, the good grade group showed high stress level when they don't have enough free time and the poor grade group showed high stress level when they have test tension and poor test performance. In character style, the introverted group showed high stress level in future uncertainty. In parenting style, the authoritative group showed significantly high level in all four sub-factors and there is no significant relationship with the stress level and economic statue. Female students reported higher mental health level than male students in somatization and depression. In academic achievement, the poor grade group showed high level in obsession, fear-anxiety and psychotism. In character style, the introverted group showed high level in sensitivity towards others and depression. And in parenting style, the authoritative group is higher in 9 sub-factors than the other two groups in the factor, economic status. The lower economic status group showed high mental health problem level in this order; in obsession, sensitivity towards others, depression, paranonia and psychotism. Second, the results revealed that there is a significant difference among the groups after comparing and analyzing the relationship between the mental health level according to the three groups, the first, second and third group divided by the degree of entrance exam stress. And the higher the entrance exam stress is, the higher the mental health problem level is. Verification showed that there was obvious difference among the groups. the entrance exam stress was positively correlated with the mental health level. The lack of free time, future uncertainty, test anxiety/poor test performance and parents pressure, these factors, in that order, were correlated with the mental health level. when the prediction variables which influenced on mental health are analyzed, test-anxiety/poor test performance was found to be related to mental health most. And after the factor, test-anxiety, future uncertainty and the lack of free time were listed(ranked), however results did not show any correlation with parents' pressure.

• Journal of The Korean Association For Science Education
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• v.36 no.1
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• pp.1-13
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• 2016

The purpose of this study is to develop a Science Ethicality Test (SET) to measure students' science ethics. To secure the validity and reliability of the SET, the authors have applied Rest's Four Components Model (FCM). To develop the SET, authors have conducted the following procedures: analysis of the Korean Youth Moral Test (Kim & Lee, 2012), alteration of the KYMT; and development of the SET. Rest's FCM is consisted of moral sensitivity, moral judgment, moral motivation, and moral character. The SET is consisted of ethical sensitivity, ethical judgment, ethical motivation, and ethical character with each factor having its own elements. To secure the validity and reliability of SET, authors requested a validity assessment from five experts (two evaluators are science education experts, two others are ethics education experts, and one evaluator is a scientist), and surveyed 599 elementary school students. As a result, SET proved high levels of validity and reliability.