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Farah Kamil,Tang Sai Hong,Weria Khaksar,Norzima Zulkifli,Siti Azfanizam Ahmad 제어·로봇·시스템학회 2019 International Journal of Control, Automation, and Vol.17 No.1
In robotics, resolution of several difficult issues requires process intelligence. In many applications, theenvironment of a robot changes with time in a manner that has not been foreseen by its designer. Additionally,information on the environment is commonly inaccurate and incomplete, which is attributed to the restricted sensoryactivity of sensors. A new online sensor-based motion planning algorithm, which employs a fuzzy multilayerdecision controller, is proposed in this study to enhance the quality of the next position in terms of safety andoptimality. Fuzzy logic controller (FLC) utilizes the prediction and priority rules of multilayer approach for an effectiveand intelligent proposed method. Moreover, an adaptive neuro-fuzzy inference system (ANFIS) is designed,which constructs and optimizes an FLC using a given dataset of input/output variables. The ANFIS shortens thehigh runtime of fuzzy system, optimizes the parameters of the membership functions of inputs and outputs of thefuzzy-multilayer decision controller, and rearranges the rules to enhance the efficiency of the overall approach. The simulation and comparison results indicate the superiority of the proposed path planning algorithm from otherwell-known algorithms.
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Xue-Song Sun,Di-Han Liu,Sai-Lan Liu,Qiu-Yan Chen,Shan-Shan Guo,Yue-Feng Wen,Li-Ting Liu,Hao-Jun Xie,Qing-Nan Tang,Yu-Jing Liang,Xiao-Yun Li,Jin-Jie Yan,Ming-Huang Hong,Jun Ma,Lin-Quan Tang,Hai-Qiang M 대한암학회 2019 Cancer Research and Treatment Vol.51 No.4
Purpose The purpose of this study was to investigate the survival trends and patterns of failure in patients with stage II nasopharyngeal carcinoma (NPC) treated with radiotherapy (RT) and chemotherapy over the last 20 years. Materials and Methods Thirty-eight hundred and eight patients diagnosed with stage II NPC between January 1990 and December 2012 were involved in this retrospective cohort study. All patients were treated with RT. According to the main imaging techniques and RT technology, we categorized these patients into four calendar periods: 1990-1996, 1997-2002, 2003-2007, and 2008-2012. Overall survival (OS), progression-free survival (PFS), locoregional relapse-free survival (LRFS), and distant metastasis–free survival (DMFS) were served as the clinical outcome. Results After a median follow-up period of 84.7 months, we observed increasing trends in survival and disease control. The 3- and 5-year OS rates increased from 87.1% and 78.7% in the first calendar period to 97.4% and 94.5% in the last calendar period, respectively (p < 0.001). Additionally, significant increasing trends could be seen in the PFS and LRFS during the four calendar periods. In the subgroup analysis, the LRFS in patients older than 50 years at diagnosis showed greater improvement than younger patients. However, the rate of distant metastasis was stable and relatively low, as the 5-year DMFS ranged from 90.5% to 94.7% among the four calendar periods. Conclusion The survival rates in patients with stage II NPC showed increasing trends from 1990 to 2012. The advance of RT provided excellent locoregional control and enhanced OS.
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