• Structural Engineering and Mechanics
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• 제83권6호
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• pp.835-851
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• 2022

This paper analyzes the variation law of the pipe lateral vibration characteristics, it was treated as a beam model, and was dispersed into several subunits based on the FEM. The corresponding stiffness and mass matrix of the pipe was deduced by using Hermite interpolation function, and the overall dynamic balance equation was established. The lateral vibration under different pipe lengths, thicknesses and towing speeds are solved by integral method. The results show that the pipe vibration trend decreases first and then increases, and the vibration value at the ore bin is larger than that at the pump set, and the value at the top is the largest, and the least value location can change with the length increase. Increasing length and thickness can reduce lateral vibration value, while increasing speed can increase the value. Neither the thickness nor the towing speed will change the location where the least value occurs. The vibration intensity will increase with the decrease of pipe length and thickness and the increase of towing speed.

• 한국작물학회:학술대회논문집
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• 한국작물학회 2022년도 추계학술대회
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• pp.325-325
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• 2022

In order to developing high-quality rice varieties and processing varieties, systematic and stable evaluation of physicochemical properties is required for breeding lines. In this study, we compared the quality characteristics evaluation results of rice breeding lines for cooked rice, special rice, and whole crop silage rice adapted to central plain region (Suwon) in order to use as basic data for future rice variety development. Brown rice length/width ratio, head rice ratio, protein content, amylose content, alkali digestion value(ADV) and Toyo value were analyzed to evaluate the quality characteristics of yield trial lines cultivated in Suwon for four years (2017-2020). Brown rice length/width ratio, head rice ratio, protein content, ADV and Toyo values showed significant differences by year, but there was no significant difference in amylose content (p<0.05), which showed little environmental variation. The head rice ratio and Toyo value showed an increasing trend, while the protein content showed a decreasing trend. However, the protein content was the highest in 2020, which is thought to be owing to little sunlight hours due to heavy rainfall in 2020. The protein content of whole crop silage rice was 8.1%, which was significantly higher than that of other lines (p<0.05). Toyo value of medium-maturing and early-maturing lines were 67.6 and 73.7%, respectively, and the Toyo value of medium-maturing lines was higher than that of the early-maturing lines (p<0.05). In correlation analysis among the quality characteristics of the rice lines for cooked rice, significant positive correlations were detected between Toyo value and head rice ratio, amylose content, ADV, and a negative correlation was observed between Toyo value and protein content (p<0.05).

• 대한영양사협회학술지
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• 제2권1호
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• pp.49-61
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• 1996

For the purpose of disclosing the relationship between job characteristics and satisfaction and organizational commitment for foodservice employees, questionnaire survey was carried out on 427 subjects of 14 general hospitals in Seoul, Korea. Questionnaire items consisted of general characteristics, organizational commitment, job satisfaction and characteristics. Data were analyzed by ANOVA, Duncan's multiple range test and Pearson correlation using SPSS PC package. The results were as follows 1. Mean score of value commitment and commitment to stay were 3.57 and 3.67. 2. There were significant differences between value commitment and age, marital status department, period and management, and between commitment to stay and experience and management. 3. Mean score of job satisfaction was the highest in co-workers(3.37) and work itself (3.37) and followed by in supervision(3.25), wage(2.43) and promotion(2.01). There were significant differences between job satisfaction for work itself and age, educational status and job department and management, between job satisfaction for wage and position, department, period and management, between job satisfaction for supervision and age, educational status and department, between job satisfaction for promotion and age, marital status, position, period, and management, between job satisfaction for co-workers and sex and educational status. 4. Mean score of job characteristics was the highest in dealing with others(4.13) and followed by in feedback(3.51), autonomy(3.29), task identify(3.07), variety(2.71) and friendship(2.47). 5. Job satisfaction for work itself, supervision and co-workers were significantly increased with increasing value commitment. Job satisfaction for work itself, supervision were significantly increased with increasing commitment to stay. Job satisfaction for promotion had negative correlation with organizational commitment in all job position. 6. Value commitment had significantly positive correlations with variety, autonomy, identity, feedback and dealing with others, and significantly negative correlation with friendship. Commitment to stay had significantly positive correlations with dealing with others, and significantly negative correlations with friendship. In all job position organizational commitment had significantly negative correlations with friendship.

• 한국의상디자인학회지
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• 제19권1호
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• pp.107-120
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• 2017

The purpose of this study was to investigate the effects of fashion shopping orientation and mobile shopping characteristics on consumer's perceived value. In addition, mobile purchase experiences of male consumers in their 20s~30s were analyzed. Questionnaires were carried out from November 10, 2015 to November 20, 2015 and 230 useful data were analyzed by descriptive statistics, exploratory factor analysis, reliability analysis, ANOVA, duncan test, multiple regression using Spss 21. The results of this study were as follows: First, fashion shopping orientation of male consumers was composed of five factors, which were 'brand ostentatious orientation', 'pleasure/trend orientation', 'economic orientation', 'impulse orientation' and 'time-saving orientation'. Second, mobile shopping characteristics were divided into three factors including 'ease of use', 'personalization', and 'security'. Third, fashion shopping orientation factors such as 'pleasure/trend orientation', 'economic orientation', and 'time-saving orientation' had a significant influence on the perceived value, while all the factors of mobile shopping characteristics affected the perceived value significantly. Fourth, there were significant differences among the classsified groups based on the level of purchase frequency and the period of using mobile shopping mall in fashion shopping orientation factors. Fourth, there were significant differences among the group classified by the level of purchase frequency in mobile shopping characteristics factors. These results suggested the differenciated strategies for customer management to make male consumers lead to mobile purchase.

• 한국IT서비스학회지
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• 제20권2호
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• pp.13-31
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• 2021

Recently, delivery app services based on the O2O platform are increasing rapidly. Accordingly, various studies on O2O service have been conducted. Most of the studies are on consumer behavior in O2O services, and few studies on platform vendors have been conducted. Therefore, this study empirically analyzed the factors affecting the vender's intention to continuous use in the O2O delivery app platform service. Based on prior researches, we set the quality characteristics and network characteristics of the O2O platform as independent variables. The quality characteristics of the O2O platform consisted of system quality, information quality, and service quality, and the O2O platform network characteristics consisted of network externality and platform reputation. Perceived value and switching cost were set as mediated variables, and vender's intention to continuous use was set as dependent variables. For empirical analysis, we conducted a survey targeting vendors of O2O delivery app platform service, and conducted frequency analysis, factor analysis, reliability analysis, and regression analysis. As a result of the analysis, the quality characteristics of the O2O platform, such as system quality, information quality, service quality, and O2O platform network characteristics, showed that network externality and platform reputation had a positive effect on perceived value. The perceived value was found to have a positive effect on the switching cost and the intention to continuous use, and the switching cost was found to mediate the perceived value and the intention to continuous use. This study can contribute to the establishment of platform operation strategy as an empirical analysis on the factors that influence the intention of O2O platform vendors to use the platform continuously.

• 가정과삶의질연구
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• 제14권2호
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• pp.61-76
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• 1996

In this study it was assumed that planning was composed of three activities -resource assessment standard setting information seeking and implementing was composed of money investment and time investment, Two variable groups which were assumed to be related with planning and implementing were household characteristics and housewife's value characteristics. Money investment to children's education was significantly affected by income, net wealth of household instrumental value of eduation and information seeking about private education. The variables assumed to affect time investment to children's education were instrumental value of education information seeking about private education and expected education level.

• 한국지반공학회:학술대회논문집
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• 한국지반공학회 1999년도 봄 학술발표회 논문집
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• pp.357-364
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• 1999

The purpose of this study is to analysis the grain distribution and compaction characteristics of structural backfill with reclaimed soil. Five(5) reclaimed soil samples which passed #200 sieve have been used in the test. The study showed that the maximum dry density and the bearing value rate turned out to be becoming smaller when the more the quantity passed #200 sieve, the smaller the soil grain. The maximum dry density value calculated from the compaction md relative density test showed wet method > compaction method > dry method. The correlation coefficient between Rc and Dr based on the grain distribution and the compaction characteristics showed that the maximum dry density value by the wet method is little higher than the compaction method and dry method.

• 동아시아식생활학회지
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• 제23권4호
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• pp.430-436
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• 2013

Muffins are prepared with different amounts of buckwheat powder (0~50%), and their quality characteristics are being investigated. The specific gravity is not affected by the addition of buckwheat powder (10~30%). The lightness (L value) and yellowness (b value) of muffins are decreased with increasing buckwheat amounts, whereas redness (a value) increased. No significant differences are being observed between muffins added with buckwheat (0~50%) for volume, weight, height, baking loss rate and specific volume. For textural characteristics, the cohesiveness, springiness and gumminess of muffins showed no significant differences between the groups, whereas hardness was decreased. In the sensory evaluation, score of color is decreased with increasing buckwheat amounts, whereas grain, flavor, taste, texture and overall acceptances are insignificant between groups. Upon the results of this study, it is assumed that the developments of food products when using buckwheat are prospective in response to health-oriented consumers.

• 한국식생활문화학회지
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• 제32권4호
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• pp.323-331
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• 2017

This study examined the quality characteristics of Jeung-pyeon made with wet non-glutinous rice flour and rice wine. The samples of Jeung-pyeon were prepared with different ratios of cooked purple sweet potato (0, 3, 6, 9, and 12%) to analyze the water content, sugar content, pH, chromaticity, texture characteristics, and sensory evaluation. No significant difference in water content, sugar content, and springiness was observed among the 5 samples. The pH and volume showed the highest level at 0%. The L-value and b-value decreased while the a-value increased. The hardness, chewiness, and gumminess were highest at 9% and lowest at 12%. The extent of violet chromaticity and pore size were optimal in 9%. In addition, 9%-added purple sweet potato showed the highest score of odor, taste, texture, and overall acceptability. In conclusion, the optimal addition for the highest acceptability of cooked purple sweet potato was 9%.

• 동아시아식생활학회지
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• 제14권5호
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• pp.463-471
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• 2004

The objectives of this study were to investigate quality characteristics of Yukwa which containing 0, 1, 3, 5% of safflower chemical properties showed that degree of expansion of Yukwa were decreased as the amount of safflower increased, while fat absorption increased. Fatty acid of Yukwa were increased as the amount of safflower increased. Sensory properties showed that cripsness of Yukwa were significant difference(P<.001) in the Yukwa with Safflower. L-value decreased by the addition of safflower, while a-value and yellowness increased. The mechanical properties showed that hardness and brittleness was the highest in the Yukwa with 5% safflower. Later 4 weeks and 6 weeks of storage, 3% and 5% safflower containing Yukwa showed decrease peroxide value and acid vale. respectively.