• Title/Summary/Keyword: Caser

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A Motion Analysis Study of Casers for Fish Boxes using Computer Simulation (컴퓨터 시뮬레이션을 이용한 어체 상자 제함기 동작 분석에 관한 연구)

  • Jung, Sung-Heon;Jun, Chul-Woong;Sohn, Jeong-Hyun
    • Journal of the Korean Society of Manufacturing Process Engineers
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    • v.18 no.4
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    • pp.56-61
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    • 2019
  • In this country, mackerel landing, sorting, and packing are mostly performed manually, which is time consuming and labor intensive. An unloading automation system saves time and labor by automating the landing, sorting, and packing processes. Casers are devices for manufacturing packing boxes for fish used by unloading automation systems. The caser design in this study is for mackerel packing boxes. This caser makes a packing box based on a press using the caser's slide crank. When the caser makes a packing box, the manufacturing sequence is determined by the caser's production guide and assisting rod. The caser design in this study is simulated using a multi-body dynamics program. The simulation is used to analyze the caser and to visualize the box-making sequence.

Study Comparing the Performance of Linear and Non-linear Models in Recommendation Systems (추천 시스템에서의 선형 모델과 비선형 모델의 성능 비교 연구)

  • Da-Hun Seong;Yujin Lim
    • The Transactions of the Korea Information Processing Society
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    • v.13 no.8
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    • pp.388-394
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    • 2024
  • Since recommendation systems play a key role in increasing the revenue of companies, various approaches and models have been studied in the past. However, this diversity also leads to a complexity in the types of recommendation systems, which makes it difficult to select a recommendation model. Therefore, this study aims to solve the difficulty of selecting an appropriate recommendation model for recommendation systems by providing a unified criterion for categorizing various recommendation models and comparing their performance in a unified environment. The experiments utilized MovieLens and Coursera datasets, and the performance of linear models(ADMM-SLIM, EASER, LightGCN) and non-linear models(Caser, BERT4Rec) were evaluated using HR@10 and NDCG@10 metrics. This study will provide researchers and practitioners with useful information for selecting the best model based on dataset characteristics and recommendation context.

Influence of Culture Comditions on Acid Tolerance of Lactobacillus casei YIT 9018 (배양조건에 따른 Lactobacillus casei YIT 9018의 니산성 변화)

  • Sim, Jae-Hun;Kim, Sang-Kyo;Baek, Young-Jin;Oh, Tae-Kwang;Yang, Han-Chul
    • Microbiology and Biotechnology Letters
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    • v.23 no.1
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    • pp.17-23
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    • 1995
  • We studied the influence of culture conditions on the acid tolerance of Lactobacillus casei YIT 9018 in artificial gastric juice with respect to relative amount of membrane bound ATPase and their biochemical characteristics. With raising incubation temperature from 30.5$\circ$C to 40.5$\circ$C and lengthening incubation time from exponential phase to late stationary phase, the acid tolerance of L. casei YIT 9018 was increased. As acid tolerance enhanced, C$_{18:1}$ content of membrane fatty acid was reduced and C$_{19:0 cyclo}$ was enriched but the others were not changed greatly. At high ATPase activity, proton permeability was relatively low but this phenomenon did not correspond to acid tolerance. In conclusion, it was considered that changes of C$_{18:1}$ and C$_{19:0 cyclo}$ were closely related to the acid tolerance of L. casei YIT 9018.

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Diagnostic Significance of Cold Agglutinin and Antimycoplasma Antibody for Mycoplasma pneumoniae Infection (항Mycoplasma 항체와 한냉응집소에 의한 Mycoplasma pneumoniae의 진단학적 의의)

  • Kim, Chung-Sook;Lee, Chae-Hoon;Jeon, Chang-Ho;Bae, Eun-Kyung;Hong, Seak-Il
    • Journal of Yeungnam Medical Science
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    • v.4 no.1
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    • pp.97-103
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    • 1987
  • A Study to evaluate the diagnostic significance of M. pneumoniae infection by measurements of cold agglutinin and antimycoplasma antibody titers is performed with 191 pediatric patients who have visited Yeungnam University Hospital during the period through January to July, 1987. Forty eight of 191 cases made follow up tests feasible. The results obtained are as follows : 1. It is necessary to perform routine combined measurements of cold agglutinin and antimycoplasma antibody titers for the all pediatric pneumoniae caser since a large proportion of pneumonia in children is caused by M. pneumoniae. 2. For the diagnosis of M. pneumoniae infection, measurements of cold agglutinin titers alone seems to be les significant than to check both cold agglutinin and antimycoplasma antibody titers. 3. The measurement of antimycoplasma antibody titer appeared to be more specific than cold agglutinin test in the diagnosis of M. pneumoniae infection. 4. The present study urges the necessity of follow up study of cold agglutinin and antimycoplasma antibody titers for those who initially presented with normal titers in both tests, but are clinically suspected for M. pneumoniae infection.

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