matrix

摘要： Due to the high heterogeneity and complexity of water flow movement for multiple karst water-bearing mediums,the evaluation,effective development,and utilization of karst water resources are significantly limited.Matrix flow is usually laminar,whereas conduit flow is usually turbulent.The driving mechanisms of water exchange that occur between the karst conduit and its adjacent matrix are not well understood.This paper investigates the hydrodynamic characteristics and the mechanism of flow exchange in dual water-bearing mediums(conduit and matrix)of karst aquifers through laboratory experimentation and numerical simulation.A karst aquifer consisting of a matrix network and a conduit was proposed,and the relationship between the water exchange flux and hydraulic head differences generated from the laboratory experiments was analyzed.Two modes of experimental tests were performed with different fixed water level boundaries in the laboratory karst aquifer.The results indicate that the water exchange capacity was proportional to the square root of hydraulic head differences.The linear exchange term in the conduit flow process(CFP)source program was modified according to experimental results.The modified CFP and the original CFP model experimental data results were compared,and it was found that the modified CFP model had better fitting effects.These results showed that the water exchange mechanism between conduit and matrix is very important for solid-liquid interface reaction,water resource evaluation,and understanding of karst hydrodynamic behavior.

摘要： Inflammation-associated proteinase functions are key determinants of inflammatory stromal tissues deconstruction.As a specialized inflammatory pathological process,dental internal resorption(IR)includes both soft and hard tissues deconstruction within the dentin-pulp complex,which has been one of the main reasons for inflammatory tooth loss.Mechanisms of inflammatory matrix degradation and tissue resorption in IR are largely unclear.In this study,we used a combination of Cre-loxP reporter,flow cytometry,cell transplantation,and enzyme activities assay to mechanistically investigate the role of regenerative cells,odontoblasts(ODs),in inflammatory mineral resorption and matrices degradation.We report that inflamed ODs have strong capabilities of matrix degradation and tissue resorption.Traditionally,ODs are regarded as hard-tissue regenerative cells;however,our data unexpectedly present ODs as a crucial population that participates in IR-associated tissue deconstruction.Specifically,we uncovered that nuclear factor-kappa b(NF-κB)signaling orchestrated Tumor necrosis factorα(TNF-α)-induced matrix metalloproteinases(Mmps)and Cathepsin K(Ctsk)functions in ODs to enhance matrix degradation and tissue resorption.Furthermore,TNF-αincreases Rankl/Opg ratio in ODs via NF-κB signaling by impairing Opg expression but increasing Rankl level,which utterly makes ODs cell line 17IIA11(A11)become Trap^(+) and Ctsk^(+) multinucleated cells to perform resorptive actions.Blocking of NF-κB signaling significantly rescues matrix degradation and resorptive functions of inflamed ODs via repressing vital inflammatory proteinases Mmps and Ctsk.Utterly,via utilizing NF-κB specific small molecule inhibitors we satisfactorily attenuated inflammatory ODs-associated human dental IR in vivo.Our data reveal the underlying mechanisms of inflammatory matrix degradation and resorption via proteinase activities in IR-related pathological conditions.

摘要： Recent animal studies showed that isoflurane exposure may lead to the disturbance of hippocampal neurogenesis and later cognitive impairment.However,much less is known about the effect of isoflurane exposure on the neurons generated form tertiary dentate matrix of dentate gyrus,even though a great increase in granule cell population during the infantile period is principally derived from this site.To label the nascent cells from the tertiary dentate matrix of dentate gyrus,the mice were injected with bromodeoxyuridine(BrdU)on postnatal day 6(P6)and were exposed to isoflurane for 4 hat 1,8,21 day(s)and 42 day(s)after BrdU injection and the brains were collected 24 h later.The loss of different developmental stage nascent cells was assessed with BrdU,BrdU+DCX,BrdU+NeuN or BrdU+Prox-1 staining respectively.We found that the isoflurane significantly decreased the newly born(1-day old)cells and mature cells(42-day old),but not maturing cells(8-and 21-day old),suggesting isoflurane exposure exerts a neurotoxic effects on tertiary dentate matrix-originated nascent cells with an age defined pattern in mice.

摘要： 埃万特集团是一家致力于提供专业且可持续材料解决方案和服务的供应商,现已推出聚碳酸酯(PC)树脂用新型液体调色剂,即应用于PC的ColorMatrix^(^(TM))Optica^(^(TM))。PC用ColorMatrix ^(TM) Optica ^(TM)调色剂可使透明的PC树脂具有更高的透明度、颜色一致性和颜色分散性。该产品有助于树脂保持透明性,并防止颜色出现不必要的变黄和变绿现象。ColorMatrix ^(TM) Optica ^(TM)调色剂不含重金属和受限成分,且与颜料和固体色母粒等替代产品相比用量更小。

摘要： 自2021年1月1日起,易科国际正式成为美国Visionary Solutions公司在中国大陆、香港及澳门地区的总代理。Visionary Solutions公司成立于1995年,是行业领先的AV over IP技术提供商,其超低延迟的视频传输产品以IP网络为平台创建灵活、可扩展的解决方案。凭借突出的价值、高性能、灵活性和高品质,AV over IP解决方案获得用户的信赖。PacketAV™Matrix产品能够用单条CAT6网线实现4K视频、Dante™/AES67音频、控制(KVM和RS-232)及电源的传输,真正做到AV和IT的融合。

摘要： Dear editor,Fundamental matrix estimation from point correspondences is a basic problem in computer vision and robotics.It is applicable in many areas,such as visual servoing(visionbased control)and structure-from-motion when the camera is uncalibrated.

摘要： Avient推出了用于聚碳酸酯(PC)树脂的新型液体调色剂技术--ColorMatrix Optica for PC。Avient表示,ColorMatrix Optica for PC调色剂在透明PC树脂中具有卓越的视觉清晰度、色彩一致性和色彩分散性。

摘要： Medical University,Shenyang 110122,China.The mechanical microenvironment of cells is recently reported to associate with the progression of renal fibrosis.However,the mechanism has not been fully elucidated.In the present study,based on the precision measurement of atom force microscope(AFM),hydrogel substrates of various stiffness were prepared to simulate the hardness of extracellular matrix(ECM)in normal and fibrotic kidney tissue.Renal mesangial cells were then cultured on the hydrogel matrix with different hardness.

摘要： Decellularized extracellular matrix(dECM)is widely used in regenerative medicine as a scaffold material due to its unique biological activity and good biocompatility.Hydrogel is a three dimensional network structure polymer with high water content and high swelling that can simulate the water environment of human tissues,has good biocompatibility,and can exchange nutrients,oxygen,and waste with cells.At present,hydrogel is the ideal biological material for tissue engineering.In recent years,rapid development of the hydrogel theory and technology and progress in the use of dECM to form hydrogels have attracted considerable attention to dECM hydrogels as an innovative method for tissue engineering and regenerative medicine.

摘要： Diffusion-ordered nuclear magnetic resonance spectroscopy(DOSY),dubbed chromato-graphic NMR spectroscopy,can be used to simultaneously distinguish and identify the structures of components in a mixture according to their different diffusion coefficients.In order to improve the resolution of DOSY on the diffusion dimension,a lot of matrices have been developed to expand the application of this technique in mixture analysis.However,there is no matrix to detect the mixture of ionic liquids(ILs).Herein,we introduced a new matrix,poly(sodium-p-styrenesulfonate)(PSSNa),which can be used to fully separate the signals of a mixture of different ILs.The mixture of three imidazolium ILs of 1-butyl-3-methylimidazolium bromide,1-allyl-3-vinylimidazolium bromide and 1-arboxymethy-3-methylimidazolium chloride could be fully distinguished by virtue of their different interactions with PSSNa.We also investigated the influences of PSSNa amount,IL con-centration and solution pH value on the signal resolution of mixtures.This work provides a scientific reference for the analysis of the other IL analytes.

摘要： 本发明公开了一种基于MatrixProfile的时间序列变长模体挖掘方法，步骤为：1.弱标记片段提取：对时间序列分段加入弱标记，提取弱标记时间序列片段。2.长度为w的模体发现：2.1最小窗口值即w＝2时片段内字典生成：以STAMP算法为子程序，找出候选子序列存入字典。2.2全局模体发现：将所有的弱标记时间序列片段连接形成新的时间序列，在新的时间序列上利用字典进行模体发现。2.3窗口值在指定窗口值内增加时，利用下界距离找出候选子序列存入字典，减少字典生成的工作量，重复全局模体发现步骤，完成模体发现。本发明不是在整个时间序列上进行模体发现，而是通过通过连接弱标记时间序列片段形成新的时间序列，从而缩短了模体搜索空间，进而提高了模体发现的效率。

摘要： 本发明请求保护一种基于UFIM‑Matrix算法改进的不确定频繁项集营销数据挖掘算法。该方法包括：在引入前置剪枝策略，该策略只涉及到一些常数的四则运算，是一种十分高效的剪枝手段，提前删除不频繁的项，避免前期数据量过大而导致过多的空间消耗；同时在计算k‑项集期望支持度时，引入位图表，根据位图表计算出相应的项集支持度，与最小阈值minsup比较，删减不频繁项集，得到频繁项集。该方法只需要对营销数据库进行两次扫描，节省了算法的时间，同时引入前置剪枝修剪策略和位图表，提高了内存和时间。

摘要： 本发明属于建筑能耗监测系统中数据质量保障技术领域，提供一种用于修复建筑能耗监测异常数据的KNN‑Matrix方法，步骤如下：S1对建筑能耗监测系统的历史数据进行识别，找出异常数据；S2对能耗数据进行模糊量化分级，并以矩阵模型的形式计算和展示；S3根据S2过程计算的模糊量化等级、横向类别n、纵向类别m，在S1过程中识别出的异常数据位置，采用与异常数据处于相同纵向类别的历史数据中寻找的代替值作为插补值，进一步优化后的插补值作为异常数据的修复值。本发明提供了一种既能反映建筑用能的规律，也能以代码形式补充入建筑能耗监测平台中实现实时修复的建筑能耗监测异常数据修复方法。试验结果表明修复误差率低于20％。

摘要： 本发明涉及汽车电子技术，具体领域为一种触摸控制的Matrix室内灯，包括电源模块、触摸感应传感器、触摸控制模块、线性恒流驱动模块和Matrix LED模组；所述电源模块还包括滤波电路和DC‑DC降压电路，所述电源模块供电通过滤波电路和DC‑DC降压电路后分别与触摸控制模块和线性恒流驱动模块连接；所述触摸控制模块还与触摸感应传感器连接；所述触摸控制模块还与线性恒流驱动模块连接；所述线性恒流驱动模块与Matrix LED模组连接，可实现将24颗LED以阵列的方式排布，通过不同的触摸方式及顺序，可控制不同位置的LED的点亮与关闭，还可根据需要在长按时进行无极调光，控制整灯亮度。

摘要： 本发明提出了基于Matrix Pencil和全连接神经网络的声波测井成像方法，首先，根据几何模型正演结果得到阵列测井信号，随后，利用Matrix Pencil方法对阵列测井信号进行慢度‑频率曲线分析，提取低频斯通利波作为特征信号，接下来设置全连接网络参数并将得到的特征信号阵列作为样本输入全连接神经网络进行训练和验证，构建测井数据反演成像模型，实现对该模型范围内的测井数据的成像。本发明利用Matrix Pencil对阵列声波信号进行处理得到慢度‑频率关系曲线，操作简单且准确率高，并且具有较好的抗噪能力，所采用的全连接神经网络算法简单，网络架构搭建容易；本申请可以实现在复杂工况下对测井数据进行快速成像，能够为固井质量检测提供基础。

摘要： 本发明请求保护一种基于UFIM‑Matrix算法改进的不确定频繁项集营销数据挖掘算法。该方法包括：在引入前置剪枝策略，该策略只涉及到一些常数的四则运算，是一种十分高效的剪枝手段，提前删除不频繁的项，避免前期数据量过大而导致过多的空间消耗；同时在计算k‑项集期望支持度时，引入位图表，根据位图表计算出相应的项集支持度，与最小阈值minsup比较，删减不频繁项集，得到频繁项集。该方法只需要对营销数据库进行两次扫描，节省了算法的时间，同时引入前置剪枝修剪策略和位图表，提高了内存和时间。

摘要： 本发明属于建筑能耗监测系统中数据质量保障技术领域，提供一种用于修复建筑能耗监测异常数据的KNN‑Matrix方法，步骤如下：S1对建筑能耗监测系统的历史数据进行识别，找出异常数据；S2对能耗数据进行模糊量化分级，并以矩阵模型的形式计算和展示；S3根据S2过程计算的模糊量化等级、横向类别n、纵向类别m，在S1过程中识别出的异常数据位置，采用与异常数据处于相同纵向类别的历史数据中寻找的代替值作为插补值，进一步优化后的插补值作为异常数据的修复值。本发明提供了一种既能反映建筑用能的规律，也能以代码形式补充入建筑能耗监测平台中实现实时修复的建筑能耗监测异常数据修复方法。试验结果表明修复误差率低于20％。

摘要： 本实用新型涉及车灯技术领域，特别涉及一种Matrix室内灯，包括：光源模块，光源模块包括左光源和右光源，左光源和右光源均包括若干光源单元；外灯罩，外灯罩上设有分别与左光源和右光源对应的左透光区、右透光区，外灯罩上还设有触摸标识，触摸标识包括用于控制左光源亮灭的第一标识和用于控制右光源亮灭的第二标识；控制模块，控制模块与光源模块电连接，且每个光源单元可以单独制控；电容膜，电容膜设置在外灯罩内表面，电容膜至少设置在与触摸标识、左透光区和右透光区相对应的位置，电容膜与控制模块电连接，本实用新型通过单点触摸、滑动及长按等方式设定需要的照射面积和室内灯的照明强度，实现多样化照明，满足多种需求。

摘要： 本实用新型涉及汽车电子技术，具体领域为一种触摸控制的Matrix室内灯，包括电源模块、触摸感应传感器、触摸控制模块、线性恒流驱动模块和Matrix LED模组；所述电源模块还包括滤波电路和DC‑DC降压电路，所述电源模块供电通过滤波电路和DC‑DC降压电路后分别与触摸控制模块和线性恒流驱动模块连接；所述触摸控制模块还与触摸感应传感器连接；所述触摸控制模块还与线性恒流驱动模块连接；所述线性恒流驱动模块与Matrix LED模组连接，可实现将24颗LED以阵列的方式排布，通过不同的触摸方式及顺序，可控制不同位置的LED的点亮与关闭，还可根据需要在长按时进行无极调光，控制整灯亮度。

摘要： 本发明涉及自然语言处理、人工智能等领域，特别涉及一种基于enhance matrix的法律案件候选段落的选取方法及装置，方法包括对带有推理性质的法律阅读理解数据集进行处理，获取具有候选段落标注的法律数据集；将每个样本中的问题与段落分别进行连接，并通过attention操作通过Bert模型输出两个不同模型参数的段落向量矩阵，根据该两个矩阵计算相似度矩阵R；针对每个样本构建EM矩阵，并利用EM矩阵对相似度矩阵R进行增量处理；将处理后的特征输入二分类任务分类器进行训练，通过训练好的模型获取概率最高的n个段落作为候选段落；本发明提高段落选择的准确率，最大程度的减少向下游任务传递的噪音信息。