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Triple Multimodal Cyclic Fusion and Self-Adaptive Balancing for Video Q&A Systems

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Computers, Materials & Continua 2022年第12期73卷 6407-6424页

作者： Xiliang Zhang Jin Liu yue Li Zhongdai Wu y.ken wang College of Information Engineering Shanghai Maritime UniversityShanghaiChina Shanghai Ship and Shipping Research Institute ShanghaiChina COSCO Shipping Technology Co. LTDShanghaiChina Division of Management and Education University of PittsburghBradfordUSA

Performance of Video Question and Answer(VQA)systems relies on capturing key information of both visual images and natural language in the context to generate relevant questions’***,traditional linear combinations of multimodal features focus only on shallow feature interactions,fall far short of the need of deep feature *** mechanisms were used to perform deep fusion,but most of them can only process weight assignment of single-modal information,leading to attention imbalance for different *** address above problems,we propose a novel VQA model based on Triple Multimodal feature Cyclic Fusion(TMCF)and Self-AdaptiveMultimodal Balancing Mechanism(SAMB).Our model is designed to enhance complex feature interactions among multimodal features with cross-modal information *** addition,TMCF and SAMB can be used as an extensible plug-in for exploring new feature combinations in the visual image *** experiments were conducted on MSVDQA and MSRVTT-QA *** results confirm the advantages of our approach in handling multimodal ***,we also provide analyses for ablation studies to verify the effectiveness of each proposed component.

关键词： Video question and answer systems feature fusion scaling matrix attention mechanism

New aspects of a small GTPase RAB35 in brain development and function

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Neural Regeneration Research 2025年第7期20卷 1971-1980页

作者： Ikuko Maejima ken Sato Laboratory of Molecular Traffic Institute for Molecular and Cellular RegulationGunma UniversityMaebashiJapan

In eukaryotic cells,organelles in the secretory,lysosomal,and endocytic pathways actively exchange biological materials with each other through intracellular membrane trafficking,which is the process of transporting the cargo of proteins,lipids,and other molecules to appropriate compartments via transport vesicles or *** processes are strictly regulated by various small GTPases such as the RAS-like in rat brain(RAB)protein family,which is the largest subfamily of the RAS *** of membrane trafficking affects tissue homeostasis and leads to a wide range of diseases,including neurological disorders and neurodegenerative ***,it is important to understand the physiological and pathological roles of RAB proteins in brain ***35,a member of the RAB family,is an evolutionarily conserved protein in metazoans.A wide range of studies using cultured mammalian cells and model organisms have revealed that RAB35 mediates various processes such as cytokinesis,endocytic recycling,actin bundling,and cell ***35 is also involved in neurite outgrowth and turnover of synaptic *** generated brain-specific Rab35 knockout mice to study the physiological roles of RAB35 in brain development and *** mice exhibited defects in anxiety-related behaviors and spatial ***,RAB35 is required for the precise positioning of pyramidal neurons during hippocampal development,and thereby for normal hippocampal *** contrast,layer formation in the cerebral cortex occurred superficially,even in the absence of RAB35,suggesting a predominant role for RAB35 in hippocampal development rather than in cerebral cortex *** studies have suggested an association between RAB35 and neurodegenerative diseases,including Parkinson's disease and Alzheimer's *** this review,we provide an overview of the current understanding of subcellular functions of *** also provide insights into the phys

关键词： endocytosis endosomes hippocampal development neurodegenerative diseases RAB35

Exploring the novel role of oligodendrocyte precursor cells in phagocytosis:beyond myelinogenesis

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Neural Regeneration Research 2025年第2期20卷 473-474页

作者： Gen Hamanaka ken Arai Neuroprotection Research Laboratories Departments of Radiology and NeurologyMassachusetts General Hospital and Harvard Medical SchoolCharlestownMAUSA

Roles of oligodendrocyte precursor cells in the central nervous system:Oligodendrocyte precursor cells(OPCs)have long been recognized for their critical role as precursors to oligodendrocytes,the primary myelin-producing *** precursors,OPCs mature and differentiate into oligodendrocytes,which contribute significantly to the formation of myelin sheaths around *** myelination,which is critical for the conduction of salutatory nerve impulses in the cerebral white matter,underscores the classical role of oligodendrocytes in central nervous system(CNS)***,because oligodendrocytes are differentiated cells that cannot proliferate.

关键词： critical system conduction

Elastic line deformed on a pseudo-hypersurface by an external field in pseudo-Euclidean spaces

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Science China Mathematics 2008年第2期51卷 233-240页

作者： yCESAN Ahmet ken A.Ceylan Department of Mathematics Süleyman Demirel University32260 IspartaTurkey

We derive intrinsic formulation for elastic line deformed on a pseudo-hypersurface by an external field in the pseudo-Euclidean spaces E_v^*** formulation determines elastic line deformed on a pseudo-hypersurface.

关键词： elastic line pseudo-Euclidean spaces intrinsic formulation external field 53A35 53B30 74M30

Metachronous gastric cancer after successful Helicobacter pylori eradication

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World Journal of Gastroenterology 2014年第33期20卷 11552-11559页

作者： Akiko Shiotani ken Haruma David y Graham Department of Internal Medicine Kawasaki Medical School Kurashiki 701-0192 Japan Department of Medicine Michael E DeBakey VAMC and Baylor College of Medicine Houston TX 77030 United States

The high incidence of gastric cancer in Japan initially resulted in establishment of a country-wide gastric cancer screening program to detect early and treatable cancers. In 2013 countrywide Helicobacter pylori(H. pylori) eradication was approved coupled with endoscopy to assess for the presence of chronic gastritis. Current data support the notion that cure of the infection in those with non-atrophic gastritis will prevent development of gastric cancer. However, while progression to more severe damage is halted in those who have already developed, atrophic gastritis/gastric atrophy remain at risk for subsequent development of gastric cancer. That risk is directly related to the extent and severity of atrophic gastritis. Methods to stratify cancer risk include those based on endoscopic assessment of the atrophic border, histologic grading, and non-invasive methods based on serologic testing of pepsinogen levels. Continued surveillance is required because those with atrophic gastritis/gastric atrophy retain considerable gastric cancer risk even after H. pylori eradication. Those who have already experienced a resectable early gastric cancer are among those at highest risk as metachronous lesions are frequent even after H. pylorieradication. We review the role of H. pylori and effect of H. pylori eradication indicating the incidence and the predictive factors on development of metachronous cancer after endoscopic therapy of early gastric cancer. Studies to refine risk markers to stratify for risk, surveillance methods, intervals, and duration after successful H. pylori eradication, and whether adjuvant therapy would change risk are needed.

关键词： Atrophic gastritis Pepsinogen miRNA Intestinal metaplasia Cancer prevention

Fatigue analysis of piezoelectric microdevice based on a continuum damage model

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International Journal of Smart and Nano Materials 2013年第3期4卷 179-198页

作者： Xianqiao wang ken P.Chong College of Engineering University of GeorgiaAthens 30606GAUSA Department of Mechanical and Aerospace Engineering George Washington UniversityWashington 20052DCUSA

The utilization of piezoelectric materials in MEMS devices under harsh environments has gained affordable appreciations due to its unique mechanical and electrical material ***,the reliability of MEMS devices triggered by fatigue damage remains elusive and needs to be further ***,we present a continuum constitutive model for piezoelectric materials containing a substantive amount of randomly dispersed *** constitutive equation of the piezoelectric materials with microcracks is formulated via Helmholtz free energy by combining the Kachanvo damage evolution law and the Chaboche fatigue damage development to express the fatigue damage growth.A case of the fatigue damage analysis of the piezoelectric microplate with transverse matrix cracks in the status of plane stress is presented by adopting the von Karman’s plate *** numerical schemes employed,the effect of cyclic impulsive loadings and electrical loadings on the fatigue damage and fatigue life prediction of a piezoelectric microplate is investigated and *** findings provide valuable insights into the fundamental mechanism of reliability in piezoelectric MEMS devices due to cyclic loadings,thereby offering new ways to exploit and fabricate the piezoelectric-based MEMS devices suitable for harsh conditions.

关键词： piezoelectric microplate constitutive equation fatigue analysis MEMS cyclic loading

Wear Behavior of Cold Pressed and Sintered Al_2O_3/TiC/CaF_2-Al_2O_3/TiC Laminated Ceramic Composite

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Acta Metallurgica Sinica(English Letters) 2013年第2期26卷 157-166页

作者： Xuefeng yANG Jian CHENG Peilong SONG Shouren wang Liying yANG yanjun wang ken MAO School of Mechanical Engineering University of Jinan Key Laboratory for Anisotropy and Texture of Materials of the Ministry of Education Northeastern University School of Engineering Warwick University

A novel laminated Al2O3/TiC/CaF2-Al2O3/TiC sandwich ceramic composite was fabricated through cold pressing and sintering to achieve better anti-wear performance, such as low friction coefficient and low wear rate. Al2O3/TiC/CaF2 and Al2O3/TiC composites were alternatively built layer-by-layer to obtain a sandwich structure. Solid lubricant CaF2 was added evenly into the Al2O3/TiC/CaF2 layer to reduce the friction and wear. Al2O3/TiC ceramic was also cold pressed and sintered for comparison. Friction analysis of the two ceramics was then conducted via a wear-and-tear machine. Worn surface and surface compositions were examined by scanning electron microscopy and energy dispersion spectrum, respectively. Results showed that the laminated Al2O3/TiC/CaF2-Al2O3/TiC sandwich ceramic composite has lower friction coefficient and lower wear rate than those of Al2O3/TiC ceramic alone because of the addition of CaF2 into the laminated Al2O3/TiC/CaF2-Al2O3/TiC sandwich ceramic composite. Under the friction load, the tiny CaF2 particles were scraped from the Al2O3/TiC/CaF2 layer and spread on friction pairs before falling off into micropits. This process formed a smooth, self-lubricating film, which led to better anti-wear properties. Adhesive wear is the main wear mechanism of Al2O3/TiC/CaF2 layer and abrasive wear is the main wear mechanism of Al2O3/TiC layer.

关键词： Friction and wear characteristics Wear property Ceramic-matrix compos-ites Layer manufacture Surface appearance Sliding

Multiple Impact Phenomenon in Impact Hammer Testing:Theoretical Analysis and Numerical Simulation

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Acta Mechanica Solida Sinica 2021年第6期34卷 830-843页

作者： Junyin Li ken Lin yanchao Hu yuliang yang yong wang Zhilong Huang Department of Engineering Mechanics Zhejiang UniversityHangzhou310027China Hangzhou Zhongpu Technology Co. Ltd.Hangzhou310012China Pengcheng Lab Shenzhen518055China

As conducting an impact hammer testing during experimental modal analysis,the multiple impact phenomenon must be *** is generally recognized that the multiple impact phenomenon is induced by the tester’s improper operation and can be avoided through more careful *** study theoretically and numerically investigates the whole process of the dynamical interaction between the hammer tip and the impacted structure and discovers the intrinsically physical mechanism of the multiple impact *** determination of the interacting process comes down to solve two sets of governing differential equations alternately,and the effectiveness of the theoretical analysis is validated by numerical *** dimensionless parameters governing the interacting process are recognized in the theoretical *** critical stiffness ratio for a given impacted location and the critical impacted location for a given stiffness ratio are analytically *** results can guide impact hammer testing to avoid the occurrence of multiple impact by suggesting the hammer tip and impacted locations.

关键词： Impact hammer testing Modal analysis Multiple impact Theoretical analysis Numerical simulation

EFFICIENT IMPLEMENTATION OF 3D FILTER FOR MOVING OBJECT EXTRACTION

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Journal of Electronics(China) 2007年第6期24卷 792-797页

作者： Chen ken wang Ping wang Lunyao Institute of Circuits and Systems Ningbo University Ningbo 315211 China Interphet Technology Corporation New York USA

In this paper the design and implementation of Multi-Dimensional (MD) filter, particularly 3-Dimensional (3D) filter, are presented. Digital (discrete domain) filters applied to image and video signal processing using the novel 3D multirate algorithms for efficient implementation of moving object extraction are engineered with an example. The multirate (decimation and/or interpolation) signal processing algorithms can achieve significant savings in computation and memory usage. The proposed algorithm uses the mapping relations of z-transfer functions between non-multirate and multirate mathematical expressions in terms of time-varying coefficient instead of traditional polyphase de- composition counterparts. The mapping properties can be readily used to efficiently analyze and synthesize MD multirate filters.

关键词： Image processing Multidimensional filters Multirate signal processing Decimation filters Interpolation filters Image edge detector Sub-band algorithm