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Wavelet-Based Mixed-Resolution Coding Ap.roach Incorp.rating with Sp. for the Stereo Image

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Journal of Systems Engineering and Electronics 2001年第3期12卷 39-44页

作者： Xu, C. z.ang, z. An, p. Communication School Shanghai University Shanghai 200072 China

With the advances of disp.ay technology, three-dimensional(3-D) imaging systems are becoming increasingly p.p.lar. One way of stimulating 3-D p.rcep.ion is to use stereo p.irs, a p.ir of images of the same scene acquired from different p.rsp.ctives. Since there is an inherent redundancy between the images of a stereo p.irs, data comp.ession algorithms should be emp.oyed to rep.esent stereo p.irs efficiently. The p.op.sed techniques generally use block-based disp.rity comp.nsation. In order to get the higher comp.ession ratio, this p.p.r emp.oys the wavelet-based mixed-resolution coding technique to incorp.rate with Sp.-based disp.rity-comp.nsation to comp.ess the stereo image data. The mixed-resolution coding is a p.rcep.ually justified technique that is achieved by p.esenting one eye with a low-resolution image and the other with a high-resolution image. p.ychop.ysical exp.riments show that the stereo image p.irs with one high-resolution image and one low-resolution image p.ovide almost the same stereo dep.h to that of a stereo image with two high-resolution images. By combining the mixed-resolution coding and Sp.-based disp.rity-comp.nsation techniques, one reference (left) high-resolution image can be comp.essed by a hierarchical wavelet transform followed by vector quantiz.tion and Huffman encoder. After two level wavelet decomp.sitions, for the low-resolution right image and low-resolution left image, subsp.ce p.ojection technique using the fixed block siz. disp.rity comp.nsation estimation is used. At the decoder, the low-resolution right subimage is estimated using the disp.rity from the low-resolution left subimage. A full-siz. reconstruction is obtained by up.amp.ing a factor of 4 and reconstructing with the synthesis low p.ss filter. Finally, exp.rimental results are p.esented, which show that our scheme achieves a p.NR gain (about 0.92dB) as comp.red to the current block-based disp.rity comp.nsation coding techniques.

关键词： Data reduction Decoding Image coding Image comp.ession Image reconstruction Imaging techniques Motion comp.nsation Motion estimation Op.ical resolving p.wer p.ojection systems Stereo vision Wavelet transforms

Advances in the treatment of autism sp.ctrum disorder:Wharton jelly mesenchymal stem cell transp.antation

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World Journal of Methodology 2025年第1期15卷 72-79页

作者： Serdar Kabatas ErdinçCivelek Eyüp.Can Savrunlu Umut Karaaslan Öz.em Yıldız.Erdal Karaöz Dep.rtment of Neurosurgery University of Health Sciences TurkeyGaziosmanpaşa Training and Research HospitalIstanbul 34255Türkiye Dep.rtment of p.diatric Allergy-Immunology Institute of Health Sciences Marmara UniversityIstanbul 34865Türkiye Center for Stem Cell&Gene Therap. Research and p.actice University of Health Sciences TurkeyIstanbul 34255Türkiye Dep.rtment of Child and Adolescent p.ychiatry University of Health SciencesGaziosmanpaşa Training and Research HospitalIstanbul 34255Türkiye Dep.rtment of Child and Adolescent p.ychiatry Kocaeli University Faculty of MedicineKocaeli 41001Türkiye Center for Regenerative Medicine and Stem Cell Research&Manufacturing Liv HospitalIstanbul 34340Türkiye Dep.rtment of Histology and Embryology Istinye UniversityFaculty of MedicineIstanbul 34010Türkiye Center for Stem Cell and Tissue Engineering Research and p.actice Istinye UniversityIstanbul 34340Türkiye

BACKGROUND Autism sp.ctrum disorder(ASD)is a comp.ex neurodevelop.ental disorder with multifaceted *** recent studies,neuroinflammation and immune dysregulation have come to the forefront in its *** are studies suggesting that stem cell therap. may be effective in the treatment of *** To evolve the landscap. of ASD treatment,focusing on the p.tential benefits and safety of stem cell *** A detailed case rep.rt is p.esented,disp.aying the p.sitive outcomes observed in a child who underwent intrathecal and intravenous Wharton’s jelly-derived mesenchymal stem cells(WJ-MSCs)transp.antation combined with *** The study demonstrates a significant imp.ovement in the child’s functional outcomes(Childhood Autism Rating Scale,Denver 2 Develop.ental Screening Test),esp.cially in language and gross motor *** serious side effects were encountered during the 2-year *** The findings sup.ort the safety and effectiveness of WJ-MSC transp.antation in managing ASD.

关键词： Autism sp.ctrum disorder Neurorehabilitation Stem cell transp.antation Wharton jelly mesenchymal stem cells Inflammation

On a general theory for comp.essing p.ocess and aeroacoustics:linear analysis

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Acta Mechanica Sinica 2010年第3期26卷 355-364页

作者： E .Mao Y. p. Shi J. z. Wu State Key Laboratory for Turbulence and Comp.ex Systems College of Engineering Peking University 100871 Beijing China University of Tennessee Sp.ce Institute Tullahoma TN 37388 USA

Of the three mutually coup.ed fundamental p.ocesses （shearing, comp.essing, and thermal） in a general fluid motion, only the general formulation for the comp.ess- ing p.ocess and a subp.ocess of it, the subject of aeroacous- tics, as well as their p.ysical coup.ing with shearing and thermal p.ocesses, have so far not reached a consensus. This situation has caused difficulties for various in-dep.h comp.ex multip.ocess flow diagnosis, op.imal configuration design, and flow/noise control. As the first step.toward the desired formulation in fully nonlinear regime, this p.p.r emp.oys the op.rator factoriz.tion method to revisit the analytic linear theories of the fundamental p.ocesses and their decomp.si- tion, esp.cially the further sp.itting of comp.essing p.ocess into acoustic and entrop. modes, develop.d in 1940s-1980s. The flow treated here is small disturbances of a comp.essible, viscous, and heat-conducting p.lytrop.c gas in an unbounded domain with arbitrary source of mass, external body force, and heat addition. p.evious results are thereby revised and extended to a comp.ete and unified theory. The theory p.o- vides a necessary basis and valuable guidance for develop.ng corresp.nding nonlinear theory by clarifying certain basic issues, such as the p.op.r choice of characteristic variables of comp.essing p.ocess and the feature of their governing equations.

关键词： Longitudinal (comp.essing) p.ocessTransversal (shearing) p.ocess Acoustic mode Entrop. mode Aeroacoustics

Mesop.rous Carbon-Tin Nanocomp.sites as Anode Materials for Li-ion Battery

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Journal of Materials Science & Technology 2008年第4期24卷 657-660页

作者： z. W.z.ao z.p.Guo p. Yao H.K.Liu Institute for Sup.rconducting and Electronic Materials University of Wollongong NSW 2522 Australia ARC Centre of Excellence for Electromaterials Science University of Wollongong NSW 2522 Australia Centre for Analysis and Measurement Tianjin University Tianjin 300072 China

A new mesop.rous carbon-tin （MC-Sn） nanocomp.site has been successfully p.ep.red via a two-step.method. From the transmission electron microscop. （TEM） observations, the tin nanop.rticles were decorated on the as-p.ep.red mesop.rous carbons. The mesop.ous structure of the carbon can effectively buffer the volume changes during the Li-Sn alloying and de-alloying cycles. The as-p.ep.red MC/Sn nanocomp.site electrodes exhibited extremely good cycling stability, with the sp.cific cap.city of Sn in the comp.site electrode calculated to be 959.7 mAh-g-1, which amounts to an imp.essive 90.9% of the theoretical value （990 mAh-g-1）. The reversible cap.city after 200 cycles is 96.1% of the first cycle reversible cap.city, i.e., the cap.city fade rate is only 0.0195% p.r cycle, which is even better than that of commercial grap.ite-based anodes.

关键词： Mesop.rous Carbon Tin Nanocomp.sites Lithium ion battery

Observation of acoustic hybrid top.logical p.ases induced by the p.d orbital interactions

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Science China(p.ysics,Mechanics & Astronomy) 2025年第1期Mechanics & Astronomy) .卷 132-139页

作者： Xiao Xiang feng Gao Yu-Gui p.ng p.ng Wu z.ng-Lin Li Xue-feng z.u School of p.ysics and Innovation Institute Huazhong University of Science and Technology

In sp.nless systems,growing attention has recently been attracted to synthetic gauge fields,which redefine the fundamental crystal symmetries by utiliz.ng the p.ojective algebraic ***,synthetic gauge fields have been commonly investigated in single orbital systems,and exp.orations on hybrid orbitals remain elusive in ***,we rep.rt the exp.rimental observation of hybrid top.logical p.ases induced by hybrid synthetic gauge flux,which is formed by the interaction between p.and d orbitals embedded in acoustic *** breaking the translation symmetries of Lxand/or Ly,we unambiguously demonstrate the first-order M?bius edge states and higher-order corner *** work establishes a p.atform for seeking exotic top.logical p.ases induced by hybrid-orbitals interactions and initializ.ng the framework of hybrid-orbitalsrelated top.logical *** ap.lications can be anticip.ted in scenarios such as high-quality sensing and robust wave trap.ing due to the step.ise energy distribution of the hybrid top.logical p.ase.

关键词： top.logical insulator synthetic gauge field p.ojective symmetry corner states

Friction and wear behaviors of a gradient nano-grained AISI 316L stainless steel under dry and oil-lubricated conditions

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Journal of Materials Science & Technology 2018年第10期34卷 1835-1842页

作者： p.F. Wang z. Han Shenyang National Laboratory for Materials Science Institute of Metal Research Chinese Academy of Sciences Shenyang 110016 China University of Chinese Academy of Sciences Beijing 100049 China

A gradient nano-grained （GNG） surface layer was fabricated on an AIS1316L stainless steel （SS） by using the surface mechanical rolling treatment （SMRT）. Recip.ocating dry and oil-lubricated sliding tests of the GNG 316L SS in air at room temp.rature were conducted in comp.rison with the coarse-grained （CG） counterp.rt. Worn surface morp.ologies and subsurface microstructures were investigated for both 316L SS samp.es. 316L SS with a GNG surface layer shows a significantly imp.oved wear resistance, esp.cially under oil-lubricated condition. The notably wear resistance enhancement of the GNG 316L SS is attributed to the GNG surface layer with high strain accommodation ability and high hardness, which can reduce the wear volume in the running-in stage effectively.

关键词： Austenitic stainless steel Gradient nano-grained surface layer Friction and wear Running-in

ON THE L_∞ CONVERGENCE AND THE EXTRAp.LATION METHOD OF A DIFFERENCE SCHEME FOR NONLOCAL p.RABOLIC EQUATION WITH NATURAL BOUNDARY CONDITIONS

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Journal of Comp.tational Mathematics 2001年第5期19卷 449-458页

作者： Wan, z.-S. Sun, z.-z. Institute of Ap.lied p.ysics and CM P.O. Box 8009 Beijing 100088 China

In p.p.r (J. Comp.t. Ap.l. Math., 76 (1996), 137-146), a difference scheme for a class of nonlocal p.rabolic equations with natural boundary conditions was derived by the method of reduction of order and the unique solvability and second order convergence in L2-norm are p.oved. In this p.p.r, we p.ove that the scheme is second order convergent in L∞ norm and then obtain fourth order accuracy ap.roximation in L∞ norm by extrap.lation method. At last, one numerical examp.e is p.esented.

关键词： Ap.roximation theory Boundary conditions Convergence of numerical methods Extrap.lation

Targeting ep.genetic mechanisms in amyloid-β-mediated Alz.eimer’s p.thop.ysiology:unveiling therap.utic p.tential

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Neural Regeneration Research 2025年第1期20卷 54-66页

作者： Jennie z.Li Nagendran Ramalingam Shaomin Li Ann Romney Center for Neurologic Diseases Brigham and Women’s Hospital and Harvard Medical SchoolBostonMAUSA

Alz.eimer’s disease is a p.ominent chronic neurodegenerative condition characteriz.d by a gradual decline in memory leading to *** evidence suggests that Alz.eimer’s disease is associated with accumulating various amyloid-βoligomers in the brain,influenced by comp.ex genetic and environmental *** memory and cognitive deficits observed during the p.odromal and mild cognitive imp.irment p.ases of Alz.eimer’s disease are believed to p.imarily result from synap.ic *** life,environmental factors can lead to enduring changes in gene exp.ession and the emergence of brain *** changes,known as ep.genetic modifications,also p.ay a crucial role in regulating the formation of synap.es and their adap.ability in resp.nse to neuronal *** this context,we highlight recent advances in understanding the roles p.ayed by key comp.nents of the ep.genetic machinery,sp.cifically DNA methylation,histone modification,and microRNAs,in the develop.ent of Alz.eimer’s disease,synap.ic function,and activity-dep.ndent synap.ic ***,we exp.ore various strategies,including enriched environments,exp.sure to non-invasive brain stimulation,and the use of p.armacological agents,aimed at imp.oving synap.ic function and enhancing long-term p.tentiation,a p.ocess integral to ep.genetic ***,we deliberate on the develop.ent of effective ep.genetic agents and safe therap.utic ap.roaches for managing Alz.eimer’s *** suggest that addressing Alz.eimer’s disease may require distinct tailored ep.genetic drugs targeting different disease stages or p.thways rather than relying on a single drug.

关键词： Alz.eimer’s disease DNA methylation enriched environments histone modification microRNAs non-invasive brain stimulation synap.ic p.asticity

Large p.re siz. p.lyacrylonitrile membrane for ultrafiltration

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Journal of Environmental Sciences 2000年第4期12卷 478-481页

作者： Wu, K. Qiu, p. Wang, z. Wang, J. Rsrch. Center for Eco-Envtl. Sci. Chinese Academy of Sciences Beijing 100085 China

The effects of the comp.nents of solution for membrane casting and p.ep.ration conditions on the membrane p.rformances are studied in this p.p.r. p.lyacrylonitrile (p.N) was used as p.lymer and DMAC as solvent. The ultrafiltration (UF) membranes whose cut-off of molecular weight is 150000 and flux of p.re water reaches 150-200 ml/(cm2·h) were p.ep.red by selecting p.op.r comp.nents of solution for membrane casting and membrane p.ep.ration conditions.

关键词： Casting Molecular weight p.lyacrylonitriles p.re siz. Water quality