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Quantum-Inspired Bee Colony Algorithm
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作者 Guorui Li mu sun Panchi Li 《Open Journal of Optimization》 2015年第3期51-60,共10页
To enhance the performance of the artificial bee colony optimization by integrating the quantum computing model into bee colony optimization, we present a quantum-inspired bee colony optimization algorithm. In our met... To enhance the performance of the artificial bee colony optimization by integrating the quantum computing model into bee colony optimization, we present a quantum-inspired bee colony optimization algorithm. In our method, the bees are encoded with the qubits described on the Bloch sphere. The classical bee colony algorithm is used to compute the rotation axes and rotation angles. The Pauli matrices are used to construct the rotation matrices. The evolutionary search is achieved by rotating the qubit about the rotation axis to the target qubit on the Bloch sphere. By measuring with the Pauli matrices, the Bloch coordinates of qubit can be obtained, and the optimization solutions can be presented through the solution space transformation. The proposed method can simultaneously adjust two parameters of a qubit and automatically achieve the best match between two adjustment quantities, which may accelerate the optimization process. The experimental results show that the proposed method is obviously superior to the classical one for some benchmark functions. 展开更多
关键词 QUANTUM Computing BEE COLONY Optimizing BLOCH SPHERE ROTATING Algorithm Designing
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Global,regional,and national trends in type 2 diabetes mellitus burden among adolescents and young adults aged 10–24 years from 1990 to 2021:a trend analysis from the Global Burden of Disease Study 2021 被引量:1
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作者 Si‑Te Xu mu sun Yu Xiang 《World Journal of Pediatrics》 2025年第1期73-89,共17页
Background Type 2 diabetes mellitus(T2DM)poses an escalating public health challenge among adolescents and young adults worldwide.Despite the rising incidence,comprehensive data on the burden and trends of T2DM in thi... Background Type 2 diabetes mellitus(T2DM)poses an escalating public health challenge among adolescents and young adults worldwide.Despite the rising incidence,comprehensive data on the burden and trends of T2DM in this demographic remain scarce.This study aims to evaluate the burden of T2DM among individuals aged 10–24 years globally,regionally,and nationally from 1990 to 2021.Methods Utilizing data from the Global Burden of Diseases,Injuries,and Risk Factors Study(GBD)2021,we assessed incidence rates,disability-adjusted life-years(DALYs),and average annual percentage changes(AAPCs)for T2DM in the specified age group.Analyses accounted for variations by age,sex,and socio-demographic index(SDI).Joinpoint regression analysis identified years of significant trend shifts.Results The global incidence of T2DM among adolescents and young adults rose from 56.02 per 100,000(95%UI 43.03–72.32)in 1990 to 123.86 per 100,000(95%UI 100.43–149.79)in 2021,reflecting an AAPC of 3.01(95%CI 2.78–3.23).Notable increases were recorded in 1995,2002,and 2009,with joinpoints indicating significant trend stabilization post-2010 for prevalence and DALYs.The largest relative incidence increase was observed in the 15–19 age group[AAPC 2.97(95%CI 2.71–3.24)].Although T2DM mortality was 2.4 times higher in the 15–19 age group compared to the 20–24 age group,the latter exhibited a significantly higher overall mortality rate.Regionally,Oceania recorded the highest incidence rates in 2021,while North Africa and the Middle East showed the greatest AAPCs.High-SDI countries experienced the most substantial increase in T2DM burden,with males comprising 54.8%of cases.Conclusions From 1990 to 2021,the global burden of T2DM among adolescents and young adults has markedly increased,underscoring the necessity for targeted,region-specific interventions to address this issue.The observed demographic disparities in mortality rates necessitate the implementation of age-specific strategies.Furthermore,the emergent trends in T2DM indicators warrant urgent attention to mitigate the rising burden in this vulnerable population. 展开更多
关键词 ADOLESCENT BURDEN GBD T2DM Trend analysis
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算子几何与Floquet拓扑相的指标公式
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作者 陈泽乾 孙牧 尹智 《中国科学:数学》 CSCD 北大核心 2023年第12期1597-1620,共24页
为了描述有限维量子系统的观测量几何相位以用于量子计算,Chen(2020)发展了有限维复Hilbert空间上的算子几何,即以酉算子群为全空间、以观测量空间为底空间构成的算子主G-丛上的几何.本文进一步发展无穷维可分复Hilbert空间上的算子几何... 为了描述有限维量子系统的观测量几何相位以用于量子计算,Chen(2020)发展了有限维复Hilbert空间上的算子几何,即以酉算子群为全空间、以观测量空间为底空间构成的算子主G-丛上的几何.本文进一步发展无穷维可分复Hilbert空间上的算子几何.为此,本文用无界算子理论给出无穷维观测量空间的微分结构及其上的量子联络和量子平行移动的定义,并用量子力学中的例子说明这些概念的几何意义.然后,定义无穷维量子系统的观测量几何相位并用算子几何给出它的几何表示.最后,对Floquet量子系统引进Floquet拓扑相的一个指标,证明该指标是一个整数并用观测量几何相位给出该Floquet拓扑相指标的一个局部化解析公式,它在物理上是可测量的. 展开更多
关键词 酉算子群 观测量空间 算子主G-丛 量子联络 观测量几何相位 Floquet拓扑相 指标公式
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