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钙磷基生物陶瓷材料的计算模拟进展与挑战

四川师范大学学报（自然科学版） 2025年第2期48卷 166-175页

作者：张巧徐定国四川大学化学学院四川成都610064

钙磷基生物陶瓷材料在生物医学领域,特别是骨修复和替代方面,展现出广阔的应用前景.传统的实验方法受制于漫长的时间、高昂的成本以及极端的条件而引入的计算模拟技术,在理解和优化材料的性能方面发挥了至关重要的作用.结合国内外研究... 详细信息

钙磷基生物陶瓷材料在生物医学领域,特别是骨修复和替代方面,展现出广阔的应用前景.传统的实验方法受制于漫长的时间、高昂的成本以及极端的条件而引入的计算模拟技术,在理解和优化材料的性能方面发挥了至关重要的作用.结合国内外研究和本小组近年的相关工作,总结钙磷基生物陶瓷材料的计算模拟进展和面临的诸多挑战,展望该领域的未来发展,强调通过结合先进的计算方法与实验验证,有望进一步推动钙磷基生物陶瓷材料在生物医学中的应用和发展.

关键词：生物陶瓷材料计算模拟骨组织工程羟基磷灰石

Sparse polynomial interpolation based on diversification

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Science China Mathematics 2022年第6期65卷 1147-1162页

作者： qiao-Long Huang Research Center for Mathematics and Interdisciplinary Sciences Shandong UniversityJinan 266237China

We consider the problem of interpolating a sparse multivariate polynomial over a finite field,represented with a black *** on the algorithm of Ben-Or and Tiwari(1988)for interpolating polynomials over fields with the characteristic 0,we develop a new Monte Carlo algorithm over finite fields by doing additional *** interpolate a polynomial f∈Fq[x1,...,xn]with a partial degree bound D and a term bound T,our new algorithm costs O~(nTlog^(2)q+nT√Dlogq)bit operations and uses 2(n+1)T probes to the black *** q O(n T^(2)D),it has a constant success rate to return the correct *** with the previous algorithms over a general finite field,our algorithm has better complexity in the parameters n,T and D,and is the first one to achieve the complexity of the fractional power about D,while keeping linear in n and T.A key technique is a randomization which makes all the coefficients of the unknown polynomial distinguishable,producing a diverse *** approach,called diversification,was proposed by Giesbrecht and Roche(2011).Our algorithm interpolates each variable independently by using O(T)probes,and then uses the diversification to correlate terms in different *** last,we get the exponents by solving the discrete logarithms and obtain the coefficients by solving a linear *** have implemented our algorithm in *** results show that our algorithm can be applied to the sparse polynomials with large degree within a few *** also analyze the success rate of the algorithm.

关键词： interpolation finite field diversification

Reliability and Numerical Analysis of a Robot Safety System

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Journal of Systems Science & Complexity 2019年第4期32卷 1072-1092页

作者： qiao Xing MA Dan College of Automation Harbin Engineering UniversityHarbin 150001China School of Mathematical Science Daqing Normal UniversityDaqing 163712China

This paper discusses a model for a repairable robot safety system composed of a safety component and two redundant robots according to a semi-group *** development of the model is divided into three phases:(Ⅰ)The use of pure analysis to prove the uniqueness of a classical solution to the model;(Ⅱ)The verification of this uniqueness by providing a non-negative solution to the model;and(Ⅲ)the formulation of reliability indices for the model,along with numerical examples to explain the *** existence,uniqueness,and exponential stability of the solution of the repairable robot safety system is studied using Volterra-type integral-differential-equation theory,and the spectral distribution of the ACP operator is ***,the authors propose a method to investigate the steady-state indicator of the robot safety system with the safety component working,and with or without the component revolving,to make use of the correspondence of the eigenvector to the eigenvalue *** authors show that the robot’s operation,with or without the safety component revolving and with fractional motion,is superior to that with the safety component *** novelty of the approach lies in its examination of a unique solution to the system and its exponential stability based on C0-semi-group theory,the co-final relative theory,and the functional analysis method.

关键词： Numerical analysis reliability index robot safety system stability

Attribution analysis for the failure of CMIP5 climate models to simulate the recent global warming hiatus

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Science China Earth Sciences 2017年第2期60卷 397-408页

作者： WEI Meng qiao FangLi First Institute of Oceanography State Oceanic Administration Qingdao 266061 China Laboratory for Regional Oceanography and Numerical Modeling Qingdao National Laboratory for Marine Science and Technology Qingdao 266237 China Key Laboratory of Marine Science and Numerical Modeling State Oceanic Administration Qingdao 266061 China

The Coupled Model Inter-comparison Project Phase 5 （CMIP5） contains a group of state-of-the-art climate models and represents the highest level of climate simulation thus far. However, these models significantly overestimated global mean surface temperature （GMST） during 2006-2014. Based on the ensemble empirical mode decomposition （EEMD） method, the long term change of the observed GMST time series of HadCRUT4 records during 1850-2014 was analyzed, then the simulated GMST by 33 CMIP5 climate models was assessed. The possible reason that climate models failed to project the recent global warming hiatus was revealed. Results show that during 1850-2014 the GMST on a centennial timescale rose with fluctuation, dominated by the secular trend and the multi-decadal variability （MDV）. The secular trend was relatively steady beginning in the early 20th century, with an average warming rate of 0.0883℃/decade over the last 50 years. While the MDV （with a -65-year cycle） showed 2.5 multi-decadal waves during 1850-2014, which deepened and steepened with time, the alarming warming over the last quarter of the 20th century was a result of the concurrence of the secular wanning trend and the warming phase of the MDV, both of which accounted one third of the temperature increase during 1975-1998. Recently the slowdown of global warming emerged as the MDV approached its third peak, leading to a reduction in the warming rate. A comparative analysis between the GMST time series derived from HadCRUT4 records and 33 CMIP5 model outputs reveals that the GMSTs during the historical simulation period of 1850-2005 can be reproduced well by models, especially on the accelerated global warming over the last quarter of 20th century. However, the projected GMSTs and their linear trends during 2006-2014 under the RCP4.5 scenario were significantly higher than observed. This is because the CMIP5 models confused the MDV with secular trend underlying the GMST time series, which results in a fast se

关键词： Global warming hiatus Secular trend MDV CMIP5 climate models EEMD

Temperature-responsive polymers： Synthesis, properties, and biomedical applications

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Nano Research 2018年第10期11卷 5400-5423页

作者： Shenglin qiao Hao Wang CAS Center for Excellence in Nanoscience CAS Key Laboratory for Biomedical Effects of Nanomatefials and Nanosafety National Center for Nanoscience and Technology (NCNST) Beijing 100190 China University of Chinese Academy of Sciences (UCAS) Beijing 100049 China

Interest in temperature-responsive polymers has steadily grown over the past several decades, and numerous studies have been dedicated to developing temperature sensitive polymers that can be constructed into new smart materials for biomedical applications. Phase behavior of a temperature-responsive polymer plays a pivotal role in determining its biological performance in certain conditions. In addition to the additives （such as salts and proteins） in aqueous solutions, molecular weight, molecular weight distribution, and structural or compositional factors can also significantly affect the transition temperatures of the polymers. This review comprehensively describes well-established and newly developed synthetic strategies for preparing temperature-responsive polymers. The structural and compositional parameters that affect the transition temperatures and self-assembly behavior are discussed. Finally, the biomedical applications of the temperature-responsive polymers in drug delivery, immunotherapy, tissue engineering, and diagnosis are summarized.

关键词： temperature-responsive polymer phase transition self-assembly nanomaterial nanomedicine

Signal processing method of a novel polarized array radar seeker

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Journal of Systems Engineering and Electronics 2013年第5期24卷 772-779页

作者： Lizhong Song Xiaolin qiao School of Information and Electrical Engineering Harbin Institute of Technology at Weihai

This paper proposes a novel polarized radar seeker based on the polarized antenna array. A fully polarized signal processing method for the proposed radar seeker is studied under the environments with electromagnetic interferences. A dual polarized antenna array is employed to transmit and receive the radar signals. The instantaneous polarization signal processing technique is used to detect and recognize the targets. The direction of arrival （DOA） of the target is measured through the spatial spectrum with high resolution for the polarized array radar seeker system. The fully polarized signal model of the polarized array radar seeker is formulated and a specific signal processing algorithm is expounded. The theoretical research and numerical simulation results demonstrate that the proposed radar seeker has good performances in target detection and electronic warfare. The research results can provide an effective technical approach to develop and research the new generation radar seeker.

关键词： antenna array polarized radar radar seeker direction of arrival (DOA) spatial spectrum.

Parametric study on supersonic flutter of angle-ply laminated plates using shear deformable finite element method

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Acta Mechanica Sinica 2011年第5期27卷 749-756页

作者： Wei Xia qiao Ni School of Civil Engineering and Mechanics Huazhong University of Science and Technology430074 Wuhan China MOE Key Laboratory for Strength and VibrationSchool of Aerospace Xi＇an Jiaotong University710049 Xi＇an China

The influence of fiber orientation,flow yaw angle and length-to-thickness ratio on flutter characteristics of angle-ply laminated plates in supersonic flow is studied by finite element *** structural model is established using the Reissner-Mindlin theory in which the transverse shear deformation is *** aerodynamic pressure is evaluated by the quasi-steady first-order piston *** equations of motion are formulated based on the principle of virtual *** the harmonic motion assumption,the flutter boundary is determined by solving a series of complex eigenvalue *** study shows that （1） The flutter dynamic pressure and the coalescence of flutter modes depend on fiber orientation,flow yaw angle and length-to-thickness ratio;（2） The laminated plate with all fibers aligned with the flow direction gives the highest flutter dynamic pressure,but a slight yawing of the flow from the fiber orientation results in a sharp decrease of the flutter dynamic pressure;（3） The angle-ply laminated plate with fiber orientation angle equal to flow yaw angle gives high flutter dynamic pressure,but not the maximum flutter dynamic pressure;（4） With the decrease of length-to-thickness ratio,an adverse effect due to mode transition on the flutter dynamic pressure is found.

关键词： Panel flutter Angle-ply laminates Fiber orientation Flow yaw angle Length-to-thickness ratio

The Changing of Common Priors in Sequential Auctions

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Journal of Systems Science & Complexity 2016年第5期29卷 1342-1357页

作者： qiao Heng MA Jun School of Economics Central University of Finance and Economics Business School University of International Business and Economics

In sequential auctions the phenomenon of declining prices is often observed, which in theory can be represented by a supermartingale. This paper employs the perspective that bidders' values may change over stages and the common priors are sequentially adjusted by the remaining bidders. It is shown that the declining price sequence can be explained by the adjustment of common priors between auctions. The adjustment of common priors is characterized by stochastic orders. Sufficient and necessary conditions for a supermartingale price sequence are derived.

关键词： First-price sealed-bid auction private-value paradigm sequential auctions.

Distributed sampling measurement method of network traffic in high-speed IPv6 networks

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Journal of Systems Engineering and Electronics 2007年第4期18卷 835-840页

作者： Pan qiao Pei Changxing State Key Lab. of Integrated Services Networks Xidian Univ. Xi'an 710071 P. R. China

With the advent of large-scale and high-speed IPv6 network technology, an effective multi-point traffic sampling is becoming a necessity. A distributed multi-point traffic sampling method that provides an accurate and efficient solution to measure IPv6 traffic is proposed. The proposed method is to sample IPv6 traffic based on the analysis of bit randomness of each byte in the packet header. It offers a way to consistently select the same subset of packets at each measurement point, which satisfies the requirement of the distributed multi-point measurement. Finally, using real IPv6 traffic traces, the conclusion that the sampled traffic data have a good uniformity that satisfies the requirement of sampling randomness and can correctly reflect the packet size distribution of full packet trace is proved.

关键词： network measurement traffic sampling IPv6 distributed measurement Shannon entropy