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Validation of a multi-layer approach-based ionospheric mapping function supporting PPP-AR 认领 引用
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作者 Jacek Paziewski MMainul Hoque +5 位作者 Rafal Sieradzki Olaf Frauenberger Pawel Wielgosz Narayan Dhital Grzegorz Nykiel Raul Orus Perez 《Satellite Navigation》 SCIE EI CSCD 2026年第1期263-278,I0006,共16页
One possibility to support Precise Point Positioning with integer Ambiguity Resolution(PPP-AR)is the application of slant ionospheric corrections converted using ionospheric Mapping Functions(MF)from Vertical Total El... One possibility to support Precise Point Positioning with integer Ambiguity Resolution(PPP-AR)is the application of slant ionospheric corrections converted using ionospheric Mapping Functions(MF)from Vertical Total Electron Content(VTEC).In such a case,the accuracy of the ionospheric corrections is driven by the uncertainties introduced by both VTEC and MF.Focusing on the ionospheric mapping functions,we note that a Single Layer Model(SLM)MF,which is conventionally used in GNSS positioning,is less effective for regions with high TEC gradients.Hence,in this study,we validate the performance of a new Multi-Layer(ML)approach-based ionospheric mapping function responding to the limitations of the conventional SLM MF.The new ML MF,based on the Neustrelitz Total Electron Content model,leverages the concept of dividing the ionosphere into several thin shells.Consequently,the ratio of aggregated Slant TEC(STEC)and VTECs provides the mapping factors.We validate the MF based on both PPP positioning and GNSS observation domains.We used data from nine GNSS stations distributed in three ionosphere sectors,namely high,middle,and low latitudes,with different daily patterns of the ionosphere.We report a benefit from applying the new multi-layer approach-based MF for PPP performance compared to positioning with a standard SLM.The advances are the most noticeable during the positioning initialization period and,therefore,are reflected in a faster convergence of the fixed solution by 4–10%,on average.The analysis in the GNSS observation domain based on geometry-free linear combination revealed the highest potential of the ML mapping function for the equa torial region. 展开更多
关键词 Ionosphere GNSS positioning PPP Mapping function
Multi-layer ionosphere mapping function for ground and LEO GNSS data and its performance analysis 认领 引用
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作者 Mohammed Mainul Hoque Liangliang Yuan +6 位作者 Grzegorz Nykiel Olaf Frauenberger Jacek Paziewski Rafal Sieradzki Pawel Wielgosz Narayan Dhital Raül Orús Pérez 《Satellite Navigation》 SCIE EI CSCD 2025年第3期291-310,共20页
When estimating ionospheric Total Electron Content(TEC)using Global Navigation Satellite System(GNSS)observations,one of the signifcant error sources is the mapping error introduced by slant to vertical TEC conversion... When estimating ionospheric Total Electron Content(TEC)using Global Navigation Satellite System(GNSS)observations,one of the signifcant error sources is the mapping error introduced by slant to vertical TEC conversion and vice versa.A single-layer Mapping Function(MF)based on a thin-shell assumption of the Earth’s ionosphere is commonly used for TEC conversion.However,the accuracy of single-layer MF is susceptible to the inaccurate fxing of the ionospheric single-layer height.In order to fnd a mapping approach less sensitive to the choice of ionospheric efective height we defned a multi-layer ionosphere mapping function and investigated its performance in comparison with the single-layer model.We found that the multi-layer MF outperforms the single-layer MF when computing GNSS receiver Diferential Code Biases(DCBs)especially at low latitude and equatorial regions where ionosphere is highly dynamic and difcult to model.When compared with the International GNSS Services(IGS)products,we found that the mean receiver DCB estimation is improved(closer to benchmark)by about 0.14-0.27 ns and 0.30-0.78 ns during days in 2019 and 2023,respectively.We found that the receiver DCB estimation improves for about 66-87%receivers.This is also refected in Global Ionosphere Maps(GIMs)showing better performance for the multi-layer MF when comparing with IGS GIMs.Our investigation using GNSS observations onboard Low Earth Orbiting(LEO)satellites shows that the multi-layer MF can be successfully applied in computing satellite and receiver DCBs accurately. 展开更多
关键词 GNSS Ionosphere Multi-layer mapping function Diferential code biases DCBs LEO DCBs
Causality in structural engineering: discovering new knowledge by tying induction and deduction via mapping functions and explainable artificial intelligence 认领 引用 被引量：2
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作者 M.Z.Naser 《AI in Civil Engineering》 2022年第1期82-97,共16页
Causality is the science of cause and effect.It is through causality that explanations can be derived,theories can be formed,and new knowledge can be discovered.This paper presents a modern look into establishing caus... Causality is the science of cause and effect.It is through causality that explanations can be derived,theories can be formed,and new knowledge can be discovered.This paper presents a modern look into establishing causality within structural engineering systems.In this pursuit,this paper starts with a gentle introduction to causality.Then,this paper pivots to contrast commonly adopted methods for inferring causes and effects,i.e.,induction(empiricism)and deduc-tion(rationalism),and outlines how these methods continue to shape our structural engineering philosophy and,by extension,our domain.The bulk of this paper is dedicated to establishing an approach and criteria to tie principles of induction and deduction to derive causal laws(i.e.,mapping functions)through explainable artificial intelligence(XAI)capable of describing new knowledge pertaining to structural engineering phenomena.The proposed approach and criteria are then examined via a case study. 展开更多
关键词 Causality Explainable artificial intelligence Mapping functions Knowledge discovery Structural engineering
Converging functional phenotyping with systems mapping to illuminate the genotype-phenotype associations 认领 引用 被引量：1
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作者 Ting Sun Zheng Shi +2 位作者 Rujia Jiang Menachem Moshelion Pei Xu 《Horticulture Research》 SCIE CSCD 2024年第12期144-148,共5页
Illuminating the phenotype-genotype black box under complex traits is an ambitious goal for researchers.The generation of temporally or spatially phenotypic data today has far outpaced its interpretation,due to their ... Illuminating the phenotype-genotype black box under complex traits is an ambitious goal for researchers.The generation of temporally or spatially phenotypic data today has far outpaced its interpretation,due to their highly dynamic nature depending on the environment and developmental stages.Here,we propose an integrated enviro-pheno-geno functional approach to pinpoint the major challenges of decomposing physiological traits.The strategy first features high-throughput functional physiological phenotyping(FPP)to efficiently acquire phenotypic and environmental data.It then features functional mapping(FM)and the extended systems mapping(SM)to tackle trait dynamics.FM,by modeling traits as continuous functions,can increase the power and efficiency in dissecting the spatiotemporal effects of QTLs.SM could enable reconstruction of a genotype-phenotype map from developmental pathways.We present a recent case study that combines FPP and SM to dissect complex physiological traits.This integrated approach will be an important engine to drive the translation of phenomic big data into genetic gain. 展开更多
关键词 functional mapping phenomic big data genotype phenotype associations genetic gain physiological phenotyping fpp functional physiological phenotyping physiological trait decomposition extended systems mapping
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FUZZY APPROACHING SET AND FUZZYAPPROACHING FUNCTIONAL MAPPING 认领 引用
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作者 曹纯 《Applied Mathematics and Mechanics(English Edition)》 SCIE EI 1998年第11期0-0,0-0+0-0+0-0+0-0+0,共1页
By establishing the concepts of fuzzy approaching set and fuzzy approaching functional mapping and making research on them, a new method for time series prediction is introduced.
关键词 fuzzy approaching set fuzzy approaching functional mapping,time series prediction
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Reducing systematic bias in machine learning applications to J/ψsignal extraction in high‑energy nuclear physics 认领 引用
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作者 Yan Wang Rong‑Rong Ma +2 位作者 Kai‑Feng Shen Ze‑Bo Tang Wang‑Mei Zha 《Nuclear Science and Techniques》 SCIE EI CAS CSCD 2026年第8期206-215,共10页
Machine learning techniques are increasingly used in high-energy nuclear physics because they can exploit multivariate correlations more efficiently than conventional cut-based analyses.A central challenge is the cons... Machine learning techniques are increasingly used in high-energy nuclear physics because they can exploit multivariate correlations more efficiently than conventional cut-based analyses.A central challenge is the construction of training samples that faithfully reproduce the detector response observed in data.Signal samples are usually derived from detector simulations;therefore,mismatches between simulation and data can degrade classifier performance and introduce systematic biases.This work presents two practical correction procedures,namely cumulative distribution function(CDF)mapping and a shift-andscale transformation,to align simulated signal features with those measured in data.Their performance is demonstrated with J∕ψ yield measurements in■GeV Ru+Ru and Zr+Zr collisions recorded by STAR.A set of self-consistency tests shows that these procedures substantially suppress the systematic bias associated with data-simulation discrepancies in machine-learning-based signal extraction. 展开更多
关键词 Machine learning J∕ψreconstruction Cumulative distribution function mapping Shift-and-scale
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An omnigenic interactome model to chart the genetic architecture of individual plants 认领 引用
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作者 Changjian Fa Guijia Wang +7 位作者 Wenqi Pan Yu Wang Jincan Che Ang Dong Dengcheng Yang Rongling Wu Shing-Tung Yau Lidan Sun 《Horticulture Research》 SCIE CSCD 2026年第3期385-398,共14页
Complex traits are controlled by many unknown genes,making it difficult to elucidate a global picture of the genotypephenotype map.Here,we develop a statistical mechanics model to contextualize all possible genes into... Complex traits are controlled by many unknown genes,making it difficult to elucidate a global picture of the genotypephenotype map.Here,we develop a statistical mechanics model to contextualize all possible genes into informative,dynamic,omnidirectional,and personalized idopNetworks.This model,derived from the combination of functional mapping and evolutionary game theory,can visualize and trace how genes act and interact with each other to shape the genetic architecture of complex traits.The model can estimate changes in the genotypic value of one gene due to the influence of other genes,specifically on individual subjects,surpassing traditional quantitative genetic studies that can only capture the marginal effect of a gene at the population level.We reconstruct growth idopNetworks from a genome-wide mapping data in a woody plant,mei,identifying unique genetic interaction architecture that distinguishes between fast-growing trees and slow-growing trees.We perform computer simulation to validate the statistical power of the model.IdopNetworks can disentangle the genetic control mechanisms of complex traits and provide guidance on how to alter phenotypic values of specific individuals by promoting or inhibiting the expression of interactive genes. 展开更多
关键词 Omnigenic interactome model evolutionary game theorycan functional mapping Evolutionary game theory Genotypic value visualize trace statistical mechanics model
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Some New Exact Solutions of Jacobian Elliptic Function of Petviashvili Equation 认领 引用 被引量：1
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作者 ZHANG Ling ZHANG Li-Feng +2 位作者 LI Chong-Yin WANG Tie TAN Yan-Ke 《Communications in Theoretical Physics》 SCIE CAS 2008年第6期1557-1560,共4页
By using the modified mapping method, we find new exact solutions of the Petviashvili equation. The solutions obtained in this paper include Jacobian elliptic function solutions, combined Jacobian elliptic function so... By using the modified mapping method, we find new exact solutions of the Petviashvili equation. The solutions obtained in this paper include Jacobian elliptic function solutions, combined Jacobian elliptic function solutions, soliton solutions, triangular function solutions. 展开更多
关键词 Petviashvili equation Jacobian elliptic function modified mapping method
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Dynamic Backup Sharing Scheme of Service Function Chains in NFV 认领 引用 被引量：3
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作者 Dong Zhang Zhifan Zheng +2 位作者 Xiang Lin Xiang Chen Chunming Wu 《China Communications》 SCIE CSCD 2022年第5期178-190,共13页
Service function chains(SFC)mapping takes the responsibility for managing virtual network functions(VNFs).In SFC mapping,existing solutions duplicate VNFs with redundant instances to provide high availability in respo... Service function chains(SFC)mapping takes the responsibility for managing virtual network functions(VNFs).In SFC mapping,existing solutions duplicate VNFs with redundant instances to provide high availability in response to failures.However,as a compromise,these solutions result in high resource consumption due to device maintenance.In this paper,we propose a novel method named dynamic backup sharing(DBS)that allows SFCs to dynamically share backups to reduce resource consumption.DBS formulates the problem of sharing backups among different VNFs as an integer linear programming(ILP).Thereafter,we design a novel online algorithm based on dynamic programming to solve the problem.The experimental results indicate that DBS outperforms state-ofthe-art works by reducing resource consumption and improving the number of accepted requests. 展开更多
关键词 network function virtualization service function chain mapping reliability backup sharing
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PATTERN MAPPING ON BETA-SPLINE SURFACES——BILINEAR MAPPING METHOD 认领 引用
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作者 Zhang Mandong Zhao Hongsheng Guan Rongchang Taiyuan University of Technology Taiyuan 030024, P. R. China 《Computer Aided Drafting,Design and Manufacturing》 1992年第2期27-31,共5页
Texture pattern mapping is one of the most important techniques for high quality image syn- thesis. It can largely enhance the visual richness of raster-scan images. In this paper is presented a new method of mapping ... Texture pattern mapping is one of the most important techniques for high quality image syn- thesis. It can largely enhance the visual richness of raster-scan images. In this paper is presented a new method of mapping planar texture pattern onto beta-spline curved surfaces——bilinear mapping method which can map planar texture pattern onto curved surfaces with less distortion, and also can fulfill the geometric transformation of the texture pattern on the curved surfaces by operating the pattern win- dow. It is valuable to both CAD/CAM in artistic field and computer graphics. 展开更多
关键词 texture pattern mapping mapping function Beta-spline bilinear mapping
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Balanced Functional Maps for Three-Dimensional Non-Rigid Shape Registration 认领 引用
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作者 Xu-Peng Wang Hang Lei +1 位作者 Yan Liu Nan Sang 《Journal of Electronic Science and Technology》 EI CAS CSCD 2021年第4期369-378,共10页
Three-dimensional(3D)shape registration is a challenging problem,especially for shapes under non-rigid transformations.In this paper,a 3D non-rigid shape registration method is proposed,called balanced functional maps... Three-dimensional(3D)shape registration is a challenging problem,especially for shapes under non-rigid transformations.In this paper,a 3D non-rigid shape registration method is proposed,called balanced functional maps(BFM).The BFM algorithm generalizes the point-based correspondence to functions.By choosing the Laplace-Beltrami eigenfunctions as the function basis,the transformations between shapes can be represented by the functional map(FM)matrix.In addition,many constraints on shape registration,such as the feature descriptor,keypoint,and salient region correspondence,can be formulated linearly using the matrix.By bi-directionally searching for the nearest neighbors of points’indicator functions in the function space,the point-based correspondence can be derived from FMs.We conducted several experiments on the Topology and Orchestration Specification for Cloud Applications(TOSCA)dataset and the Shape Completion and Animation of People(SCAPE)dataset.Experimental results show that the proposed BFM algorithm is effective and has superior performance than the state-of-the-art methods on both datasets. 展开更多
关键词 Functional map(FM) Laplace-Beltrami operator shape registration three-dimensional(3D)non-rigid shape.
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Mission decision-making method of multi-aircraft cooperatively attacking multi-target based on game theoretic framework 认领 引用 被引量：26
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作者 Yao Zongxin Li Ming +1 位作者 Chen Zongji Zhou Rui 《Chinese Journal of Aeronautics》 SCIE EI CAS CSCD 2016年第6期1685-1694,共10页
Coordinated mission decision-making is one of the core steps to effectively exploit the capabilities of cooperative attack of multiple aircrafts. However, the situational assessment is an essential base to realize the... Coordinated mission decision-making is one of the core steps to effectively exploit the capabilities of cooperative attack of multiple aircrafts. However, the situational assessment is an essential base to realize the mission decision-making. Therefore, in this paper, we develop a mission decision-making method of multi-aircraft cooperatively attacking multi-target based on situational assessment. We have studied the situational assessment mathematical model based on the Dempster-Shafer(D-S) evidence theory and the mission decision-making mathematical model based on the game theory. The proposed mission decision-making method of antagonized airfight is validated by some simulation examples of a swarm of unmanned combat aerial vehicles(UCAVs)that carry out the mission of the suppressing of enemy air defenses(SEAD). 展开更多
关键词 Antagonized airfight D-S evidence theory Fuzzy mapping function Game theoretic framework Mission decision-making Multi-aircraft coordination Situational assessment
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New Finite Difference Mapped WENO Schemes with Increasingly High Order of Accuracy 认领 引用 被引量：2
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作者 Jun Zhu Jianxian Qiu 《Communications on Applied Mathematics and Computation》 2023年第1期64-96,共33页
In this paper,a new type of finite difference mapped weighted essentially non-oscillatory(MWENO)schemes with unequal-sized stencils,such as the seventh-order and ninthorder versions,is constructed for solving hyperbol... In this paper,a new type of finite difference mapped weighted essentially non-oscillatory(MWENO)schemes with unequal-sized stencils,such as the seventh-order and ninthorder versions,is constructed for solving hyperbolic conservation laws.For the purpose of designing increasingly high-order finite difference WENO schemes,the equal-sized stencils are becoming more and more wider.The more we use wider candidate stencils,the bigger the probability of discontinuities lies in all stencils.Therefore,one innovation of these new WENO schemes is to introduce a new splitting stencil methodology to divide some fourpoint or five-point stencils into several smaller three-point stencils.By the usage of this new methodology in high-order spatial reconstruction procedure,we get different degree polynomials defined on these unequal-sized stencils,and calculate the linear weights,smoothness indicators,and nonlinear weights as specified in Jiang and Shu(J.Comput.Phys.126:202228,1996).Since the difference between the nonlinear weights and the linear weights is too big to keep the optimal order of accuracy in smooth regions,another crucial innovation is to present the new mapping functions which are used to obtain the mapped nonlinear weights and decrease the difference quantity between the mapped nonlinear weights and the linear weights,so as to keep the optimal order of accuracy in smooth regions.These new MWENO schemes can also be applied to compute some extreme examples,such as the double rarefaction wave problem,the Sedov blast wave problem,and the Leblanc problem with a normal CFL number.Extensive numerical results are provided to illustrate the good performance of the new finite difference MWENO schemes. 展开更多
关键词 Finite difference Mapped WENO scheme Mapping function Mapped nonlinear weight Unequal-sized stencil Extreme example
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SOLUTION OF DIFFERENT HOLES SHAPE BORDERS OF FIBRE REINFORCED COMPOSITE PLATES BY INTEGRAL EQUATIONS 认领 引用 被引量：4
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作者 LI Cheng ZHENG Yanping CHEN Zhongzhong 《Chinese Journal of Mechanical Engineering》 EI CAS 2007年第5期23-27,共5页
Accurate boundary conditions of composite material plates with different holes are founded to settle boundary condition problems of complex holes by conformal mapping method upon the nonhomogeneous anisotropic elastic... Accurate boundary conditions of composite material plates with different holes are founded to settle boundary condition problems of complex holes by conformal mapping method upon the nonhomogeneous anisotropic elastic and complex function theory. And then the two stress functions required were founded on Cauchy integral by boundary conditions. The final stress distributions of opening structure and the analytical solution on composite material plate with rectangle hole and wing manholes were achieved. The influences on hole-edge stress concentration factors are discussed under different loads and fiber direction cases, and then contrast calculates are carried through FEM. 展开更多
关键词 Fibre reinforced composite Accurate boundary conditions Mapping functions Complex hole shape Integral equations
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AN EDGE CRACK PROBLEM IN A SEMI-INFINITE PLANE SUBJECTED TO CONCENTRATED FORCES 认领 引用
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作者 CHEN Yi-zhou +1 位作者 Norio Hasebe 《Applied Mathematics and Mechanics(English Edition)》 SCIE EI 2001年第11期1279-1290,共12页
An oblique edge crack problem in a semi-infinite plane is discussed. Re concentrated forces are applied on the edge crack face, or on the line boundary of the cracked semi-infinite plane. The rational mapping function... An oblique edge crack problem in a semi-infinite plane is discussed. Re concentrated forces are applied on the edge crack face, or on the line boundary of the cracked semi-infinite plane. The rational mapping function approach is suggested to solve the boundary value problem and a solution in a closed form is obtained. Finally, several numerical examples with the calculated results are given. 展开更多
关键词 rational mapping function approach edge crack problem stress intensity factor
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Electroacupuncture at Tianshu (ST 25) for diarrhea-predominant irritable bowel syndrome using positron emission tomography Changes in visceral sensation center 认领 引用 被引量：7
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作者 Huirong Liu Li Qi +8 位作者 Xiaolong Wang Yihui Guan Chuantao Zuo Linying Tan Lingsong Yuan Xiaopeng Ma Xiaomei Wang Enhua Zhou Huangan Wu 《Neural Regeneration Research》 SCIE CAS 2010年第16期1220-1225,共6页
Previous studies have demonstrated that electroacupuncture therapy is effective in the treatment of irritable bowel syndrome. However, the precise mechanism of this therapy is unknown. The present study served to inve... Previous studies have demonstrated that electroacupuncture therapy is effective in the treatment of irritable bowel syndrome. However, the precise mechanism of this therapy is unknown. The present study served to investigate the effects of electroacupuncture therapy on treatment of patients with diarrhea-predominant irritable bowel syndrome （IBS）. We compared brain activation maps based on the changes of cerebral glucose metabolism obtained by 18-fluorodeoxyglucose positron emission tomography scanning under three conditions： resting, rectal balloon distension and rectal balloon distension plus electroacupuncture. Under the resting condition, compared with healthy controls, IBS patients displayed an increasing regional cerebral metabolic rate of glucose over a wide range： bilateral superior temporal gyrus, right middle occipital gyrus, superior frontal gyrus and bilateral middle frontal gyrus. However, there was no significant activity in the visceral pain center. Compared with the resting condition, under the rectal balloon distension condition, patients with IBS had a greater regional cerebral metabolic rate of glucose in the prefrontal cortex, left anterior cingulate cortex, postcentral gyrus, precentral gyrus and temporal gyrus. Under the rectal balloon distension plus electroacupuncture condition, stimulation by electroacupuncture at Tianshu （ST 25） manifested a decreased regional cerebral metabolic rate of glucose in the left cingulate gyrus, right insula, right caudate nucleus, fusiform gyrus and hippocampal gyrus. Electroacupuncture therapy relieved abdominal pain, distension or discomfort by decreasing glucose metabolism in the brain. 展开更多
关键词 irritable bowel syndrome functional brain mapping positron emission tomography anterior cingulate cortex electroacupuncture neural regeneration
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Use of Local Region Maps on Convolutional LSTM for Single-Image HDR Reconstruction 认领 引用
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作者 Seungwook Oh GyeongIk Shin Hyunki Hong 《Computers, Materials & Continua》 SCIE EI 2022年第6期4555-4572,共18页
Low dynamic range(LDR)images captured by consumer cameras have a limited luminance range.As the conventional method for generating high dynamic range(HDR)images involves merging multiple-exposure LDR images of the sam... Low dynamic range(LDR)images captured by consumer cameras have a limited luminance range.As the conventional method for generating high dynamic range(HDR)images involves merging multiple-exposure LDR images of the same scene(assuming a stationary scene),we introduce a learning-based model for single-image HDR reconstruction.An input LDR image is sequentially segmented into the local region maps based on the cumulative histogram of the input brightness distribution.Using the local region maps,SParam-Net estimates the parameters of an inverse tone mapping function to generate a pseudo-HDR image.We process the segmented region maps as the input sequences on long short-term memory.Finally,a fast super-resolution convolutional neural network is used for HDR image reconstruction.The proposed method was trained and tested on datasets including HDR-Real,LDR-HDR-pair,and HDR-Eye.The experimental results revealed that HDR images can be generated more reliably than using contemporary end-to-end approaches. 展开更多
关键词 Low dynamic range high dynamic range deep learning convolutional long short-term memory inverse tone mapping function
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A nested reciprocal experimental design to map the genetic architecture of transgenerational phenotypic plasticity 认领 引用 被引量：1
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作者 Jincan Che Yu Wang +3 位作者 Ang Dong Yige Cao Shuang Wu Rongling Wu 《Horticulture Research》 SCIE CSCD 2024年第8期172-181,共10页
Extensive studies have revealed the ecological and evolutionary significance of phenotypic plasticity,but little is known about how it is inherited between generations and the genetic architecture of its transgenerati... Extensive studies have revealed the ecological and evolutionary significance of phenotypic plasticity,but little is known about how it is inherited between generations and the genetic architecture of its transgenerational inheritance.To address these issues,we design a mapping study by growing Arabidopsis thaliana RILs in high-and low-light environments and further growing their offspring RILs from each maternal light environment in the same contrasting environments.This tree-like design of the controlled ecological experiment provides a framework for analysing the genetic regulation of phenotypic plasticity and its non-genetic inheritance.We implement the computational approach of functional mapping to identify specific QTLs for transgenerational phenotypic plasticity.By estimating and comparing the plastic response of leaf-number growth trajectories to light environment between generations,we find that the maternal environment affects phenotypic plasticity,whereas transgenerational plasticity is shaped by the offspring environment.The genetic architecture underlying the light-induced change of leaf number not only changes from parental to offspring generations,but also depends on the maternal environment the parental generation experienced and the offspring environment the offspring generation is experiencing.Most plasticity QTLs are annotated to the genomic regions of candidate genes for specific biological functions.Our computational-experimental design provides a unique insight into dissecting the non-genetic and genetic mechanisms of phenotypic plasticity shaping plant adaptation and evolution in various forms. 展开更多
关键词 Arabidopsis thaliana functional mapping mapping study growing arabidopsis thaliana rils environmental inheritance QTL transgenerational phenotypic plasticity genetic architecture
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Image encryption technique based on new two-dimensional fractional-order discrete chaotic map and Menezes–Vanstone elliptic curve cryptosystem 认领 引用 被引量：4
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作者 Zeyu Liu Tiecheng Xia Jinbo Wang 《Chinese Physics B》 SCIE EI CAS CSCD 2018年第3期161-176,共16页
We propose a new fractional two-dimensional triangle function combination discrete chaotic map(2D-TFCDM)with the discrete fractional difference.Moreover,the chaos behaviors of the proposed map are observed and the bif... We propose a new fractional two-dimensional triangle function combination discrete chaotic map(2D-TFCDM)with the discrete fractional difference.Moreover,the chaos behaviors of the proposed map are observed and the bifurcation diagrams,the largest Lyapunov exponent plot,and the phase portraits are derived,respectively.Finally,with the secret keys generated by Menezes-Vanstone elliptic curve cryptosystem,we apply the discrete fractional map into color image encryption.After that,the image encryption algorithm is analyzed in four aspects and the result indicates that the proposed algorithm is more superior than the other algorithms. 展开更多
关键词 chaos fractional two-dimensional triangle function combination discrete chaotic map image encryption Menezes-Vanstone elliptic curve cryptosystem
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Analytic solutions to a finite width strip with a single edge crack of two-dimensional quasicrystals 认领 引用 被引量：4
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作者 李梧 《Chinese Physics B》 SCIE EI CAS CSCD 2011年第11期404-408,共5页
In this paper, we investigate the well-known problem of a finite width strip with a single edge crack, which is useful in basic engineering and material science. By extending the configuration to a two-dimensional dec... In this paper, we investigate the well-known problem of a finite width strip with a single edge crack, which is useful in basic engineering and material science. By extending the configuration to a two-dimensional decagonal quasicrystal, we obtain the analytic solutions of modesⅠand Ⅱ using the transcendental function conformal mapping technique. Our calculation results provide an accurate estimate of the stress intensity factors K_Ⅰ and K_Ⅱ, which can be expressed in a quite simple form and are essential in the fracture theory of quasicrystals. Meanwhile, we suggest a generalized cohesive force model for the configuration to a two-dimensional decagonal quasicrystal. The results may provide theoretical guidance for the fracture theory of two-dimensional decagonal quasicrystals. 展开更多
关键词 transcendental function conformal mapping quasicrystal stress intensity factor
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