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12 results on '"Lv, Shu-ping"'

6. Study Of The Resonant Absorber Based Of Carbon Coated EPS

Author

Zhao Yan-Bo, Lv Shu-Ping, and Liu Shun-Hua

Subjects
Materials science, Mechanics of Materials, Mechanical Engineering, General Materials Science, Carbon coating, 02 engineering and technology, Composite material, 010402 general chemistry, 021001 nanoscience & nanotechnology, 0210 nano-technology, Condensed Matter Physics, 01 natural sciences, 0104 chemical sciences
Published
2005
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8. GA's arithmetic on time-cost optimization in architecture engineering

Author

Tian-Zhenjie and Lv Shu Ping

Subjects
Network planning and design, education.field_of_study, Mathematical optimization, Schedule, Computer science, Convergence (routing), Population, Pareto principle, Algorithm design, education, Hybrid algorithm, Evolutionary computation
Abstract

In the analysis of basic optimization method of multi-objective GA, papers was proposed on the improved GA of weights that was based on an improved elitist preservation strategy. Firstly, The algorithm combined improved strategy of the (μ + λ) evolution with GA that is based on weights coefficients. Secondly, it continuously detected the population size and restarted some groups. So they could ensure the diversity of both the population and the search direction, thus ensuring the search results of the Pareto values. Simulation results had demonstrated that the improved GA and MPP model had the effectiveness and feasibility in network planning cost and schedule optimization. In order to address the existence problems that improved algorithm was running slow, we had combined the Niched-Pareto with improved algorithm. Then the result was presenting a hybrid algorithm. The simulation showed that this hybrid algorithm had certain advantages in the search effectiveness and efficiency.

Published
2011
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12. Global burden of atrial fibrillation/atrial flutter and its attributable risk factors from 1990 to 2019.

Author

Dong XJ, Wang BB, Hou FF, Jiao Y, Li HW, Lv SP, and Li FH

Subjects
Humans, Quality-Adjusted Life Years, Risk Factors, Global Burden of Disease, Incidence, Atrial Fibrillation diagnosis, Atrial Fibrillation epidemiology, Atrial Flutter diagnosis, Atrial Flutter epidemiology
Abstract

Aims: The aim of this study was to estimate the global burden of atrial fibrillation (AF)/atrial flutter (AFL) and its attributable risk factors from 1990 to 2019., Methods and Results: The data on AF/AFL were retrieved from the Global Burden of Disease Study (GBD) 2019. Incidence, disability-adjusted life years (DALYs), and deaths were metrics used to measure AF/AFL burden. The population attributable fractions (PAFs) were used to calculate the percentage contributions of major potential risk factors to age-standardized AF/AFL death. The analysis was performed between 1990 and 2019. Globally, in 2019, there were 4.7 million [95% uncertainty interval (UI): 3.6 to 6.0] incident cases, 8.4 million (95% UI: 6.7 to 10.5) DALYs cases, and 0.32 million (95% UI: 0.27 to 0.36) deaths of AF/AFL. The burden of AF/AFL in 2019 and their temporal trends from 1990 to 2019 varied widely due to gender, Socio-Demographic Index (SDI) quintile, and geographical location. Among all potential risk factors, age-standardized AF/AFL death worldwide in 2019 were primarily attributable to high systolic blood pressure [34.0% (95% UI: 27.3 to 41.0)], followed by high body mass index [20.2% (95% UI: 11.2 to 31.2)], alcohol use [7.4% (95% UI: 5.8 to 9.0)], smoking [4.3% (95% UI: 2.9 to 5.9)], diet high in sodium [4.2% (95% UI: 0.8 to 10.5)], and lead exposure [2.3% (95% UI: 1.3 to 3.4)]., Conclusion: Our study showed that AF/AFL is still a major public health concern. Despite the advancements in the prevention and treatment of AF/AFL, especially in regions in the relatively SDI quintile, the burden of AF/AFL in regions in lower SDI quintile is increasing. Since AF/AFL is largely preventable and treatable, there is an urgent need to implement more cost-effective strategies and interventions to address modifiable risk factors, especially in regions with high or increased AF/AFL burden., Competing Interests: Conflict of interest: None declared., (© The Author(s) 2023. Published by Oxford University Press on behalf of the European Society of Cardiology.)

Published
2023
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