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Corrosion and Deformity Recognition for Current Coin
Hongwei Gao,Yueqiu Jiang,Yang Yu 보안공학연구지원센터 2016 International Journal of Signal Processing, Image Vol.9 No.6
Current coins often get damaged in the current environment, such as smudginess, discoloration, corrosion, mutilation and attrition. When the damage comes to a certain degree, the continuous use of coins will be impacted. In this paper, relevant identification technologies to mutilation and corrosion which are two common defects in circulation are investigated. At first, an auto identification and quantization algorithm about mutilation area of coin surface, based on Freeman boundary tracing is designed. On the basis of binarization, the algorithm accomplishes boundary tracing and extraction and area calculation automatically after the seed point is determined which is an arbitrary point in extracting mutilation area. Secondly, a clustering method based on HIS color model is developed for auto identification of corrosion area and calculation of corrosion area and average corrosion degree. At last, the validity and practicability of the algorithms are proved by a large number of experimental results.
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Rui Han,Yueqiu Gao,Dan Shao 보안공학연구지원센터 2016 International Journal of Smart Home Vol.10 No.5
The design of urban residential buildings in cold region is different from that in low latitude region, or the design of general public buildings. The precise grasp of dwelling unit type and appearance style, effective control of building heating and thermal insulation efficiency and the implementation of the sustainable concept of low cost construction and environmental protection are dependent on the early scientific and rational design. And the building information model technology just acts as a platform for the optimization of the design. The study is based on the engineering projects; the planning, the design of building facade, collision detection optimization and the full participation of construction cost control in building information model provide a new train of thoughts and research reference for the residential design in cold region, in the context of the digital age, and to a certain extent, the study looks forward to the future urban residential design and construction industrialization prospect in the cold region . Building information modeling technology improves the design efficiency and quality with its precise data processing and analysis, avoids the defects in design and the material waste of construction and environment pollution, significantly enhancing the pre-processing level of construction structure parts, which is in line with the energy-saving environmental protection and rural environmental construction phil
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Bowu Chen,Yan Xue,Hua Jing,Xiaodong Wang,Peimin Zhu,Weiwei Hao,Man Li,Yueqiu Gao 한국한의학연구원 2023 Integrative Medicine Research Vol.12 No.2
Background: The effectiveness and safety of herbal medicine Huashibaidu granule (HSBD) in treating mild Coronavirus Disease 2019 (COVID-19) patients infected with SARS-CoV-2 remain to be identified. We aimed to evaluate the effectiveness of HSBD in mild COVID-19 patients. Methods: A prospective, non-randomized, controlled study in mild COVID-19 patients was conducted in Shanghai, China, from April 8 to May 6, 2022. Finally, 360 mild COVID-19 patients received HSBD (orally 20 g twice daily for 7 days), and 368 patients received herbal medicine placebo (orally 20 g twice daily for 7 days). The primary endpoints were the negative conversion rate of severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) and the negative conversion time. Secondary endpoints included the hospitalized days and the improvement in the clinical condition. Results: The negative conversion rate of SARS-CoV-2 at 7 days posttreatment in the HSBD group was higher than that in the control group (95.28% vs. 82.61%, P < 0.001). The median negative conversion time in the HSBD group was markedly decreased by 2 days compared with the control group (3 [3–6] vs. 5 [4–7], P < 0.001). In addition, the median hospitalized day was shortened in the HSBD group by 1 day compared with the control group (6 [4–7] vs. 7 [5–9], P < 0.001). The clinical improvement rate (275/360 [76.39%]) in the HSBD group within 7 days was significantly higher than that (203/368 [55.16%]) in the control group (P < 0.001). The improvement of symptom scores in the HSBD group was higher than that in the control group (2 [1–4] vs. 1 [1–2], P < 0.001). No severe adverse events occurred. Conclusions: Our study suggested that HSBD effectively increased the negative conversion rate of SARS-CoV-2 and shortened the negative conversion time and hospitalized days in mild COVID-19 patients. Clinical trial registration: The trial was registered at Chinese Clinical Trial Registry, ChiCTR2200058668.
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