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Novel Deadlock Control for Smartphone Manufacturing Systems Using Petri Nets
Yi-Nan Lin,Sheng-Kuan Wang,Gwo-Jen Chiou,Cheng-Ying Yang,Victor R. L. Shen,Tony Tong-Ying Juang,Ting-Jui Huang 제어·로봇·시스템학회 2022 International Journal of Control, Automation, and Vol.20 No.3
Currently, the marketing strategy in the manufacturing industry is becoming more and more competitive. Thus, the production efficiency becomes the main developing trend, which many people are now pursuing. However, the automatic production might cause resource conflicts and system deadlocks. In this study, Petri net models and analysis were used to effectively avoid deadlocks and to achieve the goal of lean production. The iPhone XS device developed by Apple is now a popular product. Consequently, this paper aims to describe its manufacturing system by using Petri net models. Meanwhile, the siphon property of Petri nets can be used to detect the deadlock in the manufacturing processes and to avoid it from occurring. Two simulation software tools, WoPeD and PIPE, were applied to conduct the experiments. The experimental results have indicated that our proposed approach is more feasible and acceptable than other existing ones.
Prediction of postoperative pancreatic fistula using a nomogram based on the updated definition
Cheng-Xiang Guo,Yi-Nan Shen,Qi Zhang,Xiao-Zhen Zhang,Jun-Li Wang,Shun-Liang Gao,Jian-Ying Lou,Ri-Sheng Que,Tao Ma,Ting-Bo Liang,Xue-Li Bai 대한외과학회 2020 Annals of Surgical Treatment and Research(ASRT) Vol.98 No.2
Purpose: The International Study Group on Pancreatic Fistula’s definition of postoperative pancreatic fistula (POPF) has recently been updated. This study aimed to identify risk factors for POPF in patients having pancreaticoduodenectomy (PD) and to generate a nomogram to predict POPF. Methods: Data on 298 patients who underwent PD from March 2012 to October 2017 was retrospectively reviewed and POPF statuses were redefined. A nomogram was constructed using data from 220 patients and validated using the remaining 78 patients. Independent risk factors for POPF were identified using univariate and multivariate analyses. A predictive nomogram was established based on the independent risk factors and was compared with existing models. Results: Texture of the pancreas, size of the main pancreatic duct, portal vein invasion, and definitive pathology were the identified risk factors. The nomogram had a C-index of 0.793 and was internally validated. The nomogram performed better (C-index of 0.816) than the other most cited models (C-indexes of 0.728 and 0.735) in the validation cohort. In addition, the nomogram can assign patients into low- (less than 10%), intermediate- (10% to 30%), and high-risk (equal or higher than 30%) groups to facilitate personalized management. Conclusion: The nomogram accurately predicted POPF in patients having PD.
Han Ying-Hao,Chen Dong-Qin,Jin Mei-Hua,Jin Ying-Hua,Li Jing,Shen Gui-Nan,Li Wei-Long,Gong Yi-Xi,Mao Ying-Ying,Xie Dan-Ping,Lee Dong-Seok,Yu Li-Yun,Kim Sun-Uk,김지수,권태호,Cui Yu-Dong,Sun Hu-Nan 한국응용생명화학회 2020 Applied Biological Chemistry (Appl Biol Chem) Vol.63 No.3
Severe inflammatory reactions caused by macrophage activation can trigger a systemic immune response. In the present study, we observed the anti-inflammatory properties of hispidin on LPS induced RAW264.7 macrophage cells. Our results showed that hispidin treatment significantly reduced the production of cellular NO, IL-6 and reactive oxygen species (ROS) while has not inhibitory effect on TNF-α productions. Excitingly, hispidin treatment retains the phagocytosis ability of macrophages which enabling them to perform the function of removing foreign invaders. Signaling studies showed, hispidin treatment dramatic suppressed the LPS induced mitogen activated protein kinases (MAPK) and JAK/STAT activations. In conclusion, our findings suggest that hispidin may be a new therapeutic target for clinical treatment of macrophages-mediated inflammatory responses.