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revue Internationale de Géomatique 2023年第1期32卷 79-98页

作者： Faidance Mashauri Mokili Mbuluyo Nsalambi Nkongolo département de Géologie Facultédes Sciences et TechnologiesUniversitéde l’UéléIsiroBP 670République démocratique du Congo département de Sciences du Sol et de l’Eau Institut Facultaire des Sciences Agronomiques(IFA)de YangambiKisanganiBP 1232République démocratique du Congo département de Géologie Facultédes Sciences et TechnologiesUniversitéde KisanganiKisanganiBP 2012République démocratique du Congo Geographic Information Technology Program School of ScienceNavajo Technical UniversityCrownpointNew MexicoUSA

The most characteristic hydro-morphometric parameters controlling water flow in the Tshopo catchment have not yet been *** analysis,multiple linear regression and hierarchical ascending classification were applied to all the data in order to identify the most characteristic variables that significantly influence water flow velocity,and to group together physically similar *** results highlight the importance of topography on water *** topographical variables,namely median altitude(H50),overall gradient(dg)and specific gradient(ds),have a significant influence(p-value≤0.05)on surface water flow velocity(Ve)in the Tshopo *** opposing groups(G1 and G2)of sub-catchments were identified,on the one hand the sub-catchments belonging to the upper and middle course of the Tshopo(SBV1,SBV2,SBV3 and SBV5)and on the other the sub-catchments of the lower course(SBV6,SBV7 and SBV8).The first group is characterized by moderate relief(ds ranging from 53.19 to 73.6 m),while the second group has low relief(ds ranging from 18.1 to 29.43 m).

关键词： Hydro-morphometric parameters correlation analysis multiple linear regression hierarchical ascending classification sub-catchments Tshopo river

Utilisation du système d’information géographique et modèle numérique de terrain dans l’analyse des caractéristiques hydro-morphométriques des sous-bassins versants de la rivière Tshopo,république démocratique du Congo Use of Geographic Information System and digital Elevation Model to Analyze the Hydro-Morphometric Characteristics of the Tshopo river Sub-Catchments,democratic republic of Congo

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revue Internationale de Géomatique 2023年第1期32卷 99-122页

The analysis and quantification of hydro-morphometric characteristics are essential for better management of water resources and more effective planning of hydroelectric projects in the Tshopo ***,few studies have been carried out to assess these characteristics at the scale of this *** methodological approach consists of using Geographic Information System(GIS)software analysis tools applied to the digital Elevation Model(dEM)derived from the Advanced Land Observing Satellite(ALOS)World 3d-30m *** enabled us to automatically extract the hydrographic network and generate the Tshopo *** results of this analysis show that the Tshopo catchment area is of the order of magnitude 7.A total of 8 sub-watersheds were identified,covering an area of around 19,335 *** are elongated in shape,with a coefficient of compactness(KG)of between 1.84 and *** slopes are low,ranging from 0.84%to 3.58%.run-off velocity is generally low,with a velocity range(Ve)of 2.3 to 4.79 km/*** duration of run-off concentration(Tc)varies between 30.2 and 70.2 h in the tributaries of the *** hydrographic network is dense,with drainage densities(dd)ranging from 0.91 to 1.72 km/*** watercourses form a homogeneous dendritic network,but with local *** some places,the network can take on a parallel or rectangular shape.

关键词： Morphometry dEM GIS hypsometry hydrographic network sub-catchments Tshopo river

Average widths and optimal recovery of multivariate Besov classes in L_p(r^d)

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Chinese Science Bulletin 1998年第8期43卷 638-641页

作者： Yanjie Jiang Yongping Liu Beijing Normal Univ Dept Math Beijing 100875 Peoples R China

Some weak asymptotic results for average σ-K width and average σ_L width of the isotropic Besov classes S r pθB(r d), S r pθb(r d) and the anisotropic Besov classes S r pθB(r d), S r pθb(r d) in L p(r d) (1≤pre obtained, and the corresponding weak asymptotic optimal subspaces are identified. Furthermore, the weak asymptotic behavior of optimal recovery is established for the isotropic Besov classes S r pθB(r d) in L p(r d) (1≤p≤∞).

关键词： average dimension average width optimal recovery Besov class.

Average Widths of Sobolev-Wiener Classes with Mixed Smoothness in L_q(r^d)

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Acta Mathematica Sinica,English Series 2001年第2期17卷 305-312页

作者： He Ping WANG department of Mathematics, Capital Normal University. Beijing, 100037, P. r. China department of Mathematics Capital Normal University Beijing 100037 P. R. China

In this paper, the average σ-K width of Sobolev-Wiener classes Spqr W with mixed smooth- ness in Lq（rd） is studied for 1d the weak asymptotical behavior of these quantities is obtained.

关键词： Sobolev-Wiener classes with mixed smoothness Average σ-K width Step hyperbolic crosses

On a Class of Weak Nonhomogeneous Affine Bi-frames for reducing Subspaces of L^2(r^d)

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Acta Mathematica Sinica,English Series 2017年第10期33卷 1339-1351页

作者： Jian Ping ZHANG Yun Zhang LI College of Applied Sciences Beijing University of Technology Beijing 100124 P. R. China

For refinable functiombased affine bi-frames, nonhomogeneous ones admit fast algorithms and have extension principles as homogeneous ones. But all extension principles are based on some restrictions on refinable functions. So it is natural to ask what are expected from general refinable functions. In this paper, we introduce the notion of weak nonhomogeneous affine bi-frame （WNABF）. Under the setting of reducing subspaces of L2（rd）, we characterize WNABFs and obtain a mixed oblique extension principle for WNABFs based on general refinable functions.

关键词： Frame reducing subspace weak affine bi-frame weak nonhomogeneous affine bi-frame,extension principle

Behavior recognition algorithm based on the improved r3d and LSTM network fusion

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High Technology Letters 2021年第4期27卷 381-387页

作者： Wu Jin An Yiyuan dai Wei Zhao Bo School of Electronic and Engineering Xi’an University of Posts and TelecommunicationsXi’an 710121P.R.China

Because behavior recognition is based on video frame sequences,this paper proposes a behavior recognition algorithm that combines 3d residual convolutional neural network(r3d)and long short-term memory(LSTM).First,the residual module is extended to three dimensions,which can extract features in the time and space domain at the same ***,by changing the size of the pooling layer window the integrity of the time domain features is preserved,at the same time,in order to overcome the difficulty of network training and over-fitting problems,the batch normalization(BN)layer and the dropout layer are *** that,because the global average pooling layer(GAP)is affected by the size of the feature map,the network cannot be further deepened,so the convolution layer and maxpool layer are added to the r3d ***,because LSTM has the ability to memorize information and can extract more abstract timing features,the LSTM network is introduced into the r3d *** results show that the r3d+LSTM network achieves 91%recognition rate on the UCF-101 dataset.

关键词： behavior recognition three-dimensional residual convolutional neural network(r3d) long short-term memory(LSTM) dropout batch normalization(BN)

L^2(r^d) Approximation Capability of Incremental Constructive Feedforward Neural Networks with random Hidden Units

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Journal of Mathematical research and Exposition 2010年第5期30卷 799-807页

作者： Jin Ling LONG Zheng Xue LI dong NAN School of Mathematical Sciences Dalian University of Technology Liaoning 116024 P. R. China department of Mathematics Southeast University Jiangsu 210096 P. R. China College of Applied Science Beijing University of Technology Beijing 100022 P. R. China

This paper studies approximation capability to L^2（rd） functions of incremental constructive feedforward neural networks （FNN） with random hidden units. Two kinds of therelayered feedforward neural networks are considered： radial basis function （rBF） neural networks and translation and dilation invariant （TdI） neural networks. In comparison with conventional methods that existence approach is mainly used in approximation theories for neural networks, we follow a constructive approach to prove that one may simply randomly choose parameters of hidden units and then adjust the weights between the hidden units and the output unit to make the neural network approximate any function in L2 （rd） to any accuracy. Our result shows given any non-zero activation function g ： r＋ → r and g（｜｜x｜｜r^d） ∈ L^2（rd） for rBF hidden units, or any non-zero activation function g（x） ∈ L^2（r^d） for TdI hidden units, the incremental network function fn with randomly generated hidden units converges to any target function in L2 （r^d） with probability one as the number of hidden units n → ∞, if one only properly adjusts the weights between the hidden units and output unit.

关键词： approximation incremental feedforward neural networks rBF neural networks TdI neural networks random hidden units.

Telencephalic stab wound injury induces regenerative angiogenesis and neurogenesis in zebrafish:unveiling the role of vascular endothelial growth factor signaling and microglia

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Neural regeneration research 2025年第10期20卷 2938-2954页

作者： danielle Fernezelian Philippe rondeau Laura Gence Nicolas diotel Universitéde La réunion INSERMUMR 1188Diabète athérothrombose Thérapies Réunion Océan Indien(DéTROI)Saint PierreLa RéunionFrance

After brain damage,regenerative angiogenesis and neurogenesis have been shown to occur simultaneously in mammals,suggesting a close link between these ***,the mechanisms by which these processes interact are not well *** this work,we aimed to study the correlation between angiogenesis and neurogenesis after a telencephalic stab wound *** this end,we used zebrafish as a relevant model of neuroplasticity and brain repair ***,using the Tg(fli1:EGFP×mpeg1.1:mCherry)zebrafish line,which enables visualization of blood vessels and microglia respectively,we analyzed regenerative angiogenesis from 1 to 21 days *** parallel,we monitored brain cell proliferation in neurogenic niches localized in the ventricular zone by using *** found that after brain damage,the blood vessel area and width as well as expression of the fli1 transgene and vascular endothelial growth factor(vegfaa and vegfbb)were *** the same time,neural stem cell proliferation was also increased,peaking between 3 and 5 days post-lesion in a manner similar to angiogenesis,along with the recruitment of ***,through pharmacological manipulation by injecting an anti-angiogenic drug(Tivozanib)or Vegf at the lesion site,we demonstrated that blocking or activating Vegf signaling modulated both angiogenic and neurogenic processes,as well as microglial ***,we showed that inhibition of microglia by clodronate-containing liposome injection or dexamethasone treatment impairs regenerative neurogenesis,as previously described,as well as injury-induced *** conclusion,we have described regenerative angiogenesis in zebrafish for the first time and have highlighted the role of inflammation in this *** addition,we have shown that both angiogenesis and neurogenesis are involved in brain repair and that microglia and inflammation-dependent mechanisms activated by Vegf signaling are important contributors to

关键词： angiogenesis cerebral damage inflammation neurogenesis stab wound telencephalon vascular endothelial growth factor zebrafish

Une plongée dans les réseaux d’eau sinueux de l’Axe central de Beijing

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今日中国（法文版） 2022年第8期60卷 20-22页

作者： WANG CHONGCHEN Ecole d’ingénierie environnementale et de génie énergétique à l’Université de génie civil et d'architecture de Beijing

de même que les humains vivent au bord de l’eau,la planification urbaine dépend de l’or *** cours des 3000 ans de construction de la ville de Beijing,l’eau a été pleinement mise en valeur.

关键词： les des Beijing