• Title/Summary/Keyword: sample production

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A Case Study on Manufacturing Processes for Virtual Garment Sample

  • Choi, Young Lim
    • Fashion & Textile Research Journal
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    • v.19 no.5
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    • pp.595-601
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    • 2017
  • Advances in 3D garment simulation technology contribute greatly to consumers becoming more immersed in movies and games by realistically expressing the garments the characters in the movie or game are wearing. The fashion industry has reached a point where it needs to maximize efficiency in production and distribution to go beyond time and space in order to compete on the global market. The processes of design and product development in the fashion industry require countless hours of work and consume vast resources in terms of materials and energy to repeat sample production and assessment. Therefore, the design and product development tools and techniques must aim to reduce the sample making process. Therefore, this study aims to study a case for comparing the real garment sample making process to the virtual garment sample making process. In this study, we have analysed the differences between the real and virtual garment making processes by choosing designated patterns. As we can see from the study results, the real and virtual garments generally are made through similar processes in manufacturing, while the time consumed for each shows great variation. In real garment making, scissoring and sewing require the greatest number of work hours, whereas in virtual garment making, most of the time was spent in the simulation process.

The Moderate Effect of SPC on the Relations Between Practicing JIT and Production Performance

  • Park, Jeong-Soo
    • International Journal of Quality Innovation
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    • v.10 no.1
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    • pp.107-113
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    • 2009
  • Our goal of this study is to confirm whether manufacturing companies' practicing JIT production system have positive effect on production performances and to confirm that manufacturing companies' practicing SPC shows positive moderate effect on the relation between practicing JIT and their production performances. Based on empirical study to manufacturing companies nationwide, we can conclude that taking JIT practices of sample companies has positive effect on production performances and, moreover, practicing SPC has positive moderate effect on the relation between JIT practices and production performances. These conclusion represents managerial implication that concurrent practicing JIT and SPC could generate more improved production performances.

Studies on the Productivity and the Production Structure of the Forests I. On the Productivity of Pinus rigida Plantation (삼림의 생산구조와 생산력에 대한 연구 I. 리기다소나무 조림지에 대하여)

  • 김준호
    • Journal of Plant Biology
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    • v.14 no.4
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    • pp.19-26
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    • 1971
  • The sample stand of Pinus rigida plantation was chosen from those at the Choongnam Forest Experiment Station, Choongnam. The diameter at breast height (D) and the height of tree (H) of each tree in the sample plot of 200$m^2$ were measured yearly a from 1967 through 1969. The stand was 12.7-13.4cm in mean diameter and had a stand density of 2,150 trees per ha. The trunk, branches and leaves of each sample tree were separately weighed according to the stratified clip technique. The allometric relation between D2H and dry weight of trunk (Ws), branches (Wb) and leaves (Wl) were approximated by $$W_s=0.05917 (D^2H)^{0.837}$$ $$W_0=0.00655 (D^2H)^{0.989 }$$ $$W_l=0.04466(D^2H)^{0.690}$$ From the above, the standing crops in the sample stand was estimated to be as much as 76.7, 81.7 and 88.2 tons of dry matter, above ground, per ha in 1967, 1968 and 1969, respectively. Annual net production, as the sum of the biomass newly produced during one year, was estimated at 4.97-5.47 tons per ha per year. The respiratory and the photosynthetic rate deduced from theoretical calculations were 0.045 and 0.74kg of dry matter per kg per year. Tentative estimate of annual respiratory loss was made and annual gross production was roughly estimated at 4.4-4.7 and 10.7-12.9 tons of dry matter per ha per year. The ratio of respiratory loss to gross production was approximately 36-41:1.

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A Rapid Technique for Determination of Total Disappearance of Dietary Nitrogen in the Digestive Tract Using Washed Fecal Sample after Freezing and Thawing

  • Kamel, H.E.M.;El-Waziry, A.;Sekine, J.
    • Asian-Australasian Journal of Animal Sciences
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    • v.13 no.3
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    • pp.313-316
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    • 2000
  • Three Holstein steers, fitted with ruminal and duodenal cannulas, were used in a replicated $3{\times}3$ Latin square design to determine the digestibility of dietary nitrogen in total digestive tract by three methods, 1) mobile nylon bag (MNB); 2) total fecal collection (TFC); and 3) washed fecal sample after freezing and thawing through a sieve with a pore size of $45{\mu}m$ (WFS). A basal diet of oaten hay-barley was supplemented with one of the following protein sources; soybean meal, fish meal or blood meal. Steers were fed at a level of 2% of body weight. The experimental diets were contained approximately 1.85% nitrogen. There were no differences (p>0.05) among the diets on DM, NDF and nitrogen disappearances, and the diet results were pooled to assess the methods. Total tract disappearances of dry matter and neutral detergent fiber were 61.6, 71.1 and 78.9 and 25.3, 63.2 and 64.6 for MNB, TFC and WFS methods, respectively. The lower digestibility of DM and NDF in the MNB method could be a result of low ruminal incubation time. The TFC method had the lower (p<0.05) determination of nitrogen disappearance in the total digestive tract than the MNB and WFS methods. On the other hand, nitrogen disappearance in the total digestive tract determined by the WFS technique was comparable to that in MNB technique, as there was no significant difference (p>0.05) between the methods. It is shown that the disappearance of dietary nitrogen in the total digestive tract could be estimated in the intact animals by using washed fecal sample prior to freezing and thawing.

Functional Characteristics of Kombucha Fermented with Lactic Acid Bacteria, Yeast, and Acetic Acid Bacteria Derived from Korea Traditional Foods

  • Lee, Su-Min;Lee, Jae-Yong;Yoo, Dong-Gyu;Jeon, Yu-Bin;Yoon, Ho-Sik;Kim, Cheol-Hyun
    • Journal of Dairy Science and Biotechnology
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    • v.40 no.1
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    • pp.23-34
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    • 2022
  • In this study, to determine the importance of lactic acid bacteria (LAB) in Kombucha fermentation, biological functions, such as organic acid production and anti-inflammatory and antibacterial activities, of Kombucha, with or without LAB inoculation, were evaluated. Lactobacillus paracasei DK215, Saccharomyces cerevisiae C3, and Acetobacter pasteurianus P2 were selected as the inoculants. Organic acids were measured every 3 days from the end of fermentation using HPLC; the organic acid content of LAB-inoculated Kombucha was relatively high. Samples with or without LAB inoculation showed high antibacterial activity against Escherichia coli. The MTT assay results indicated no significant difference in concentration difference and cell death. In the NO production test, compared with the uninoculated Kombucha sample, the LAB-inoculated Kombucha sample exhibited a value similar to that of the group without LPS treatment. The levels of cytokine (IL-1α, IL-6, TNF-α) production were significantly lower than those of the LPS(+) group, indicating the anti-inflammatory activity potential of the Kombucha sample. This improvement in the biological function of the LAB-inoculated Kombucha further verifies the value of LAB in the fermented food and beverage industry.

Sensitivity Analysis for a Make-to-Order Inventory-Production System with Limited Order Acceptance Level (제한된 주문허용 수준을 갖는 주문공산 재고시스템을 위한 민감도 분석)

  • Kim Eungab;Kim Jiseung
    • Journal of the Korean Operations Research and Management Science Society
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    • v.30 no.2
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    • pp.117-129
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    • 2005
  • This paper considers a make-to-order inventory-production system in which customer orders are admitted only when the number of outstanding customer orders is below a value committed by the system. We deal with general distributions for the customer order Inter-arrival, production, and replenishment lead time processes. Monotonicities of the optimal average cost with respect to these distribution parameters are established using sample path coupling arguments. When distributions are given as an exponential one, we implement a sensitivity analysis on the optimal inventory policy and show that it has monotonicities with respect to system costs using dynamic programming.

Production of Red Pigments by Monascus purpureus in Solid-state Culture

  • Lee Bum-Kyu;Piao Hai Yan;Chung Wook-Jin
    • Biotechnology and Bioprocess Engineering:BBE
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    • v.7 no.1
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    • pp.21-25
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    • 2002
  • To maximize and sustain the productivity of Monascus pigments, various environmental and nutritional parameters, such as the initial moisture content, pH, inoculum size, sample size, and nutrient supplement, that influence pigment production were evaluated in solid-state cultures as follows: initial moisture content, $50\%;$ pH, 6.0; inoculum size $1\;\times\;10^4$ spore cells $(grams\;of\;dry\;solid\;substrate)^{-1};$ sample size, 300 g. All supplementary nutrients (carbon, nitrogen, and mineral sources) added has inhibitory effects on the cell growth and red pigment production. In open tray culture the maximum biomass yield and specific productivity of red pigments were 223 mg DCW $(grams\;of\;initial\;dry\;substrate)^{-1}$ and, $47.6\;OD_{500}\;(DCW\;grams)^{-1}h^h{-1}$ respectively.

Reliability Design Based on System Performance-Cost Trade-off for Manufacturing facility

  • Hwang, Heung-Suk;Hwang, Gyu-Wan
    • International Journal of Reliability and Applications
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    • v.2 no.4
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    • pp.269-280
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    • 2001
  • The objective of this paper is to provide a model for effective implementation of costing RAM management in the design and procurement of production facility considering the system cost-performance trade-off. This research proposes a two-step approach of costing RAM design and test of system RAM for production facility. In Step 1, a static model is proposed to find an initial system configuration to meet the required performance based on system RAM and LCC and analyzes the trade-off relationships between various factors of RAM and LCC. In the second Step, we developed time and failure truncated models for system reliability test and analysis. For the computational purpose, we developed computer programs and have shown the sample results. By the sample test run, the proposed model has shown the possibilities to provide a good method to analyze system performance evaluation for both design and operational phase, This model can be applied to a wide variety of systems not only for costing RAM of the production facilities but also for the other kinds of equipment.

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A Path Specification Approach for Production Planning in Semiconductor Industry

  • Seo, Kwang-Kyu
    • Journal of the Semiconductor & Display Technology
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    • v.9 no.4
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    • pp.45-50
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    • 2010
  • This paper explores a new approach for modeling of decision-making problems that involve uncertain, time-dependent and sequence-dependent processes which can be applied to semiconductor industry. In the proposed approach, which is based on probability theory, approximate sample paths are required to be specified by probability and statistic characteristics. Completely specified sample paths are seen to be elementary and fundamental outcomes of the related experiment. The proposed approach is suitable for modeling real processes more accurately. A case study is applied to a single item production planning problem with continuous and uncertain demand and the solution obtained by the approximate path specification method shows less computational efforts and practically desirable features. The application possibility and general plan of the proposed approach in semiconductor manufacturing process is also described in the paper.

Effects of Siegesbckiae Herba on the Brain Ischemia (희렴 이 뇌허혈에 미치는 효과)

  • Han Jong Hyun;Na Han Il;Kyu Ho Kyung;Jo Kyu Won;Kim Kyung Soo
    • Journal of Physiology & Pathology in Korean Medicine
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    • v.18 no.6
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    • pp.1643-1651
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    • 2004
  • This experimental study was designed to investigate the effects of SIEGESBECKIAE HERBA extract (SHE) on the change of cerebral hemodynamics 〔regional cerebral blood flow (rCBF) and mean arterial blood pressure(MABP)〕 in normal condition and cerebral ischemic rats, and to determine the mechanism of action of SHE. This study was designed to investigate whether or not SHE inhibit lactate dehydrogenase (LDH) activity in neuronal cells and cytokines production in serum of cerebral ischemic rats. The results were as follows SHE increased rCBF significantly in a dose-dependent manner, but MABP was not changed by SHE in normal rats. The SHE-induced increase in rCBF was significantly inhibited by pretreatment with indomethacin (IDN), an inhibitor of cyclooxygenase but was increased by methylene blue (MTB), an inhibitor of guanylate cyclase. SHE inhibited lactate dehydrogenase (LDH) activity significantly in neuronal cells. rCBF was increased significantly and stably by SHE(10㎎/㎏, i.p.) during the period of cerebral reperfusion, which contrasted with the findings of rapid and marked increase in control group in ischemic rats. In serum by drawing from femoral arterial blood after middle cerebral arterial occlusion(MCAO) for 1hr and reperfusion for 1hr, the sample group was decreased IL-1β production significantly compared to that of the control group. In serum by drawing from femoral arterial blood after MCAO 1hr and reperfusion 1hr, sample group decreased TNF-α production significantly compared to that of the control grolilp. In serum by drawing from femoral arterial blood after reperfusion 1hr, sample group increased TGF-β production significantly compared to that of the control group. In serum by drawing from femoral arterial blood after MCAO for 1hr and reperfusion for 1hr, IL-10 production of the sample group was similar to that of control group. These results suggested that SHE had inhibitive effect on the brain damage by inhibited LDH activity, IL-1β and TNF-α production, but accelerated TGF-β production.