• 한국운동역학회지
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• 제14권3호
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• pp.99-118
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• 2004

The aim of this study is to evaluate tennis shoes's plantar pressure distribution in tennis prayers and to determine the influence of the shoe on various tennis movements. When investigating the biomechanics of movement in tennis, one of the first things to do is to understand the movement patterns of the sport, specifically how these patterns relate to different tennis shoes. Once these patterns are understood, footwear company can design tennis shoes that match the individual needs of tennis players. Plantar pressure measurement is widely employed to study foot function, the mechanical pathogenesis for foot disease and as a diagnostic and outcome measurement tool for many performance. Measurements were taken of plantar pressure distribution across the foot and using F-Scan(Tekscan Inc.) systems respectively. The F-Scan system for dynamic in-shoe foot pressure measurements has enabled us to assess quantitatively the efficacy of different types of footwear in reducing foot pressures. The Tekscan F-Scan system consists of a flexible, 0.18mm thick sole-shape having 1260 pressure sensors, the sensor insole was trimmed to fit the subjects' right, left shoes. For this study 4 university male, high level tennis players were instructed to hit alternated forehand stroke, backhand stroke, forehand volley, backhand volley, smash, service movement in 4 different tennis shoes. 1. When impact in tennis movement, peak pressure distribution of landing foot displayed D>C>B>A, A displayed the best low pressure distribution. A style's tennis shoes will suggest prayer with high impact. If prayer with high impact feeling during pray in tennis wear A style, it will decrease injury, will have performance improvement. 2. When impact in tennis movement, plantar pattern of pressure distribution in landing foot displayed B>A>C>D in stability performance. During tennis, prayer want to stability movement suggest B style tennis shoes when tennis movement impact keep stability of human body. B style tennis shoes give performance improvement 3. When impact in tennis movement, plantar pattern of center of force(C.O.F.)trajectory in landing foot analyzed this : 1) When stroke movement and volley movement in tennis, prayer better to rearfoot movement. 2) when service movement, prayer midfoot strike movement. 3) when smash movement, prayer have forefoot strike movement.

• 한국경영과학회:학술대회논문집
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• 대한산업공학회/한국경영과학회 2006년도 춘계공동학술대회 논문집
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• pp.1677-1683
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• 2006

Color image segmentation is useful for fast retrieval in large image database. For that purpose, new image segmentation technique based on the probability of pixel distribution in the image is proposed. Color image is first divided into R, G, and B channel images. Then, pixel distribution from each of channel image is extracted to select to which it is similar among the well known probabilistic distribution function-Weibull, Exponential, Beta, Gamma, Normal, and Uniform. We use sum of least square error to measure of the quality how well an image is fitted to distribution. That P.d.f has minimum score in relation to sum of square error is chosen. Next, each image is quantized into 4 gray levels by applying thresholds to the c.d.f of the selected distribution of each channel. Finally, three quantized images are combined into one color image to obtain final segmentation result. To show the validity of the proposed method, experiments on some images are performed.

• 유통과학연구
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• 제20권2호
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• pp.65-77
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• 2022

Purpose: This study aims to identify factors affecting the adoption of e-commerce by household businesses in Vietnam's food and beverage industry. Research design, data and methodology: The integrated TAM and TOE frameworks and ten hypotheses were developed to test the relationship between relevant factors. A cross-sectional survey was conducted to collect valid data from 992 respondents who run F&B household businesses in Vietnam. Results: The empirical research results confirm all proposed hypotheses that e-commerce adoption is affected by the perceived usefulness, the perceived ease of use, vendor support partners, social expectancy, competitive pressure, subjective norm, and household resources. Meanwhile, technical readiness, environment readiness, and organization readiness are intermediate variables that influence the implementation of e-commerce in food and beverage distribution. Conclusions: The findings suggest effective orientations to foster the food and beverage e-trading practice for household businesses in developing countries. Accordingly, to encourage private household businesses to adopt e-commerce, it is necessary to focus on improving business resources, technology readiness, environment readiness, and organization readiness through raising awareness of usefulness, benefits, perceived ease of use, and increased support of vendor partners. Future research can focus on improving the efficiency of e-commerce applications in F&B distribution for both household businesses and larger-scale enterprises.

• 대한수학회지
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• 제32권2호
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• pp.279-287
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• 1995

Let $F$ be a set of distributions on R with the topology of weak convergence, and let $A$ be the $\sigma$-field generated by the open sets. We denote by $F_1^\infty$ the space consisting of all infinite sequence $(F_1, F_2, \cdots), F_n \in F and R_1^\infty$ the space consisting of all infinite sequences $(x_1, x_2, \cdots)$ of real numbers. Take the $\sigma$-field $F_1^\infty$ to be the smallest $\sigma$-field of subsets of $F_1^\infty$ containing all finite-dimensional rectangles and take $B_1^\infty$ to be the Borel $\sigma$-field $R_1^\infty$.

• 한국식품저장유통학회지
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• 제23권6호
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• pp.848-858
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• 2016

국내 삼계탕 제조업체에서의 스팀식 레토르트기내 위치별 $F_0$ 분포를 조사하고 이에 따라 시료를 3가지 $F_0$값(10~20, 20~30, 및 >30) 수준으로 구분하여, 처리구별 품질 차이를 확인하였다. $F_0$값의 수준이 높아질수록 삼계탕 가슴부위육의 육수에서의 무기질 함량, 육의 $L^*$과 $b^*$ 값, 죽과 육에서의 소화율 및 육수의 탁도는 증가하는 경향을 보였고, 육에서의 유리 아미노산 함량과 가슴살과 뼈의 경도는 오히려 유의적으로 낮아지는 경향을 보였다. 전자코로 측정된 육수와 가슴살의 향기 패턴은 시료에 따라 큰 차이를 나타냈다. 관능학적 평가 결과 높은 $F_0$값으로 처리할수록 색, 이취, 조직감 및 향미 등 모든 지표 값이 낮아지는 경향이 확인되었는데, 특히 T3 시료의 색과 조직감은 T1과 T2시료에서보다 확실히 열등하게 평가되었다. 따라서 삼계탕의 품질 열화를 줄이기 위해서는 가능한 한 최소한의 $F_0$값 처리가 요구되며, 이를 위해서는 레토르트기의 우수한 성능과 효율성이 보장되고 이와 관련한 각 공장에 적합한 살균기술의 표준화가 필요할 것으로 사료된다.

• E2M - 전기 전자와 첨단 소재
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• 제8권3호
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• pp.324-331
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• 1995

0.36[wt%l $SiO_{2}$ and 0.1[wt%] $H_{3}$B $O_{3}$ were added to strontium ferrite magnets of the magnetoplumbite phase SrO.5.7F $e_{2}$ $O_{3}$ to hinder grain growth and accelerate sintering, respectively. This experiment was carried out to investigate effect of particle size distribution as a function of milling time(20, 30, 40, 50, 60, 70 hours) on the magnetic properties of SrO.5.7F $e_{2}$ $O_{3}$ ferrite magnet. The B-H curve, density and the degree of orientation were measured. And the microstructure of ferrite magnets was examined with a SEM. The optimal conditions and properties of the typical sample are the following : The milling time was 60 hours. Magnetic and physical properties are $B_{r}$=4, 000[G], $_{b}$ $H_{c}$=3, 330[Oe], (BH)max=3.786[MGOe], $_{I}$ $H_{c}$=3, 525[Oe], density=5.0063[g/c $m^{3}$] and orientation factor f=0.813.0.813.3.3.

• 한국환경과학회지
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• 제30권12호
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• pp.983-991
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• 2021

The role of the distribution basin role is to apportion incoming raw water to the primary sedimentation basin as part of the water treatment process. The purpose of this study was to calculate the amount of water in the distribution basin using computational fluid dynamics (CFD) analysis and to find a way to improve any non-uniformity. We used the Taguchi method and the minitab tool as optimization methods. The results of the CFD calculation showed that the distribution flow had a deviation of 5% at the minimum inflow, 10% at the average inflow, and 22% at the maximum inflow. At maximum flow, the appropriate heights of the 7 weirs(C, D, A, B, E, F, G) were 40 mm, 20 mm, 20 mm, 0, 0, 0, and 20 mm, respectively, according to the Taguchi optimization tool. Here, the maximum deviation of the distribution amount was 9% and the standard deviation was 23.7. The appropriate heights of the 7 weirs, according to the Minitab tool, were 40 mm, 20 mm, 20 mm, 0, 0, 0, and 20 mm, respectively, for weirs C, D, A, B, E, F, and G. Therefore, the maximum deviation of the distribution amount was 8% and the standard deviation was 17.1, which was slightly improved compared to the Taguchi method.

• 상하수도학회지
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• 제35권3호
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• pp.197-204
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• 2021

In MBR, extracellular polymeric substance (EPS) is known as an important factor of fouling; soluble EPS (sEPS) affects internal contamination of membrane, and bound EPS (bEPS) affects the formation of the cake layer. The production of EPS changes according to the composition of influent, which affects fouling characteristics. Therefore, in this study, the effects of the F/M ratio on the sEPS concentration, bEPS content, and fouling were evaluated. The effects of F/M ratio on the amount and composition of EPS were confirmed by setting conditions that were very low or higher than the general F/M ratio of MBR, and the fouling occurrence characteristics were evaluated by filtration resistance distribution. As a result, it was found that the sEPS increased significantly with the increase of the F/M ratio. When the substrate was depleted, bEPS content decreased because bEPS was hydrolyzed into BAP and seemed to be used as a substrate. In contrast, when the substrate is sufficient, UAP (utilization-associated products) was rapidly generated in proportion with the consumption of the substrate. UAP has a relatively higher Protein/Carbohydrate ratio (P/C ratio) than BAP, and this means, it has a higher adhesive force to the membrane surface. As a result, UAP seems like causing fouling rather than BAP (biomass-associated products). Therefore, R_f (Resistance of internal contamination) increased rapidly with the increase of UAP, and R_c (Resistance of cake layer) increased with the accumulation of bEPS in proportion, and as a result, the fouling interval was shortened. According to this study, a high F/M ratio leads to an increment in UAP generation and accumulation of bEPS, and by these UAP and bEPS, membrane fouling is promoted.

• 농업과학연구
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• 제22권2호
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• pp.163-169
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• 1995

본 연구는 홀스타인종 유우의 혈청단백질 및 효소에 대한 유전적 구조를 분석하기 위하여, 혈청단백질인 post-transferrin-2(pTf-2), transferrin(Tf), post-albumin(pAlb) 및 albumin(Alb)과 혈청효소인 ceruloplasmin(Cp)와 amylase-I(Am-I)을 polyacrylamide gel electrophoresis(PAGE)와 starch g디 electrophoresis(STAGE) 방법으로 유전적 변이체를 분석하였다. 혈청단백질인 pTf-2 좌위는 pTf-2 F와 S 유전자에 의해 지배되는 pTf-2 FF, FS 및 SS 유전자형이 확인되었으며, 이들의 분포는 각각 76.34%, 14.50% 및 9.10%이었고, 유전자빈도는 pTf-2 F와 S가 각각 0.836 및 0.164이었다. 한편 Tf 좌위는 Tf A, D1, D2 및 E 유전자가 검출되었으며, 유전자형은 Tf AA, AD1, AD2, AE, D1D1, D1D2, D2D2 및 D2E형이 확인되었고, 이들의 분포는 각각 0.11, 32.06, 19.08, 1.53, 10.69, 18.32, 9.92 및 2.29%이었으며, 유전자빈도는 Tf A, D1, D2 및 E에서 각각 0.324, 0.359, 0.298 및 0.019이었다. 또한 pAlb 좌위는 pAlb F와 S 유전자가 검출되었고, 유전자형은 pAlb FF, FS 및 SS형이 확인되었으며, 이들의 분포는 각각 32.06, 29.77 및 38.17%이었고, 유전자빈도는 pAlb F와 S가 각각 0.469 및 0.531이었다. Alb 유전자 빈도에 있어서는 Alb A와 B가 각각 0.996 및 0.004이었다. 그리고 혈청효소인 Cp 좌위는 Cp F와 S 유전자가 검출되었으며, 유전자형은 Cp FF, FS 및 SS 형이 확인되었고, 이들의 분포는 각각 46.57, 27.48 및 25.95%이었으며, 유전자빈도는 Cp F와 S가 각각 0.603 및 0.394이었다. Am-I 좌위는 Am-I B와 C 유전자가 검출되었으며, 유전자형은 Am-I BB, BC 및 CC 형이 확인되었고, 이들의 빈도비율은 각각 39.69, 21.73 및 38.93% 이었으며, 유전자 빈도는 Am-I B와 C가 각각 0.503 및 0.497이었다.

• Journal of Oral Medicine and Pain
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• 제21권2호
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• pp.243-253
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• 1996

In order to be utilized as a database in forensic identification and parentage test, allelic frequency and genotype distribution of short tandem repeat(STR) F13B locus was analysed by polymerase chain reaction in 210 Korean adults who are not related. The results were as follows. 1. 3 alleles and 56 genotypes of F13B locus were detected and heterozygosity value was 48.6% and allelic diversity value was 0.639 and the power of discrimination was 0.804. 2. The observed each alleles and allelic frequency was 8(0.069), 9(0.193), 10(0.738). In conclusion, the allelic frequency of STR F13B locus in the Korean is considered as an useful DNA allelic profile for forensic identification, but it should be used with several other STR locus to get definitive conclusion of analysis for individual identification and parentage testing.