Results 31 to 40 of about 32,016 (206)

A class of G3 high precision eighth-degree Hermite interpolation splines with multiple parameters(一种多参数G3高精度的八次Hermite插值样条)

open access: yesZhejiang Daxue xuebao. Lixue ban
To address the issues of high continuity and high precision in engineering calculations, this paper introduces an eighth-degree Hermite-type interpolation spline featuring high-order continuity, high precision, and multiple parameters.
谢进(XIE Jin), 尹行(YIN Hang)
doaj   +1 more source

科研学术大数据的精准服务架构设计 [PDF]

open access: yes, 2019
【目的】研究面向科研学术大数据的精准服务架构, 解决科研学者获取精准知识服务的问题。【方法】通过分析互联网应用精准服务现状, 从数据组织、技术方法、应用场景三个方面, 归纳对比精准服务的方法, 面向科研学术生态链条设计精准服务体系。【结果】精准服务架构设计梳理关联了数据生产、技术研发、应用服务环节, 支撑了科研学术的精准搜索与推荐服务应用。【局限】该架构未与传统方法对比, 还需结合实际应用评测验证精准性提升效果。【结论】本文解决了精准服务技术方法的单一性问题, 为应用系统研发提供系统的架构支撑。
孔贝贝   +4 more
core   +1 more source

Tracing change in the public perception of plants: insights from archives and social media in China

open access: yesPLANTS, PEOPLE, PLANET, EarlyView.
As urbanization accelerates, historic gardens serve as vital cultural treasures that offer spiritual and cultural support to the public. This study proposes an innovative approach that merges historical records from the Qing Dynasty with contemporary social media data to explore changes in public perceptions of these gardens.
Dong Xu   +4 more
wiley   +1 more source

GPU-based geometry texture synthesis(基于GPU加速的几何纹理合成方法)

open access: yesZhejiang Daxue xuebao. Lixue ban, 2016
提出了一种基于GPU加速的几何纹理合成方法,以解决几何纹理合成过程中高计算量、高存储占用和高耗时等问题.首先,对样本几何纹理数据进行子块划分,并根据子块在样本中的位置关系设计可重用样本顶点数据的数据结构,优化存储以降低内存的占用率;然后,采用GPU多线程并发技术设计并行加速算法,将串行的几何纹理合成过程并行化,从而实现快速生成任意尺寸的新的几何纹理.实验结果表明,该算法不仅占用存储较少,而且在保证合成质量的同时极大地降低了几何纹理的合成耗时.
GUIYan(桂彦)   +3 more
doaj   +1 more source

Existence of nonoscillatory solutions of higher order nonlinear neutral difference equations with positive and negative coefficients and multiple variable delays(具正负系数和多变时滞的高阶非线性中立型差分方程非振动解的存在性)

open access: yesZhejiang Daxue xuebao. Lixue ban, 2022
利用Banach空间的不动点原理和不等式技巧,研究具正负系数和多变时滞的高阶非线性中立型差分方程正解的存在性,在一定条件下,建立了该方程的新的非振动准则,所得结论推广并改进了一系列已有结果。
ZHANGPing(张萍)   +2 more
doaj   +1 more source

Big Data and Research of Big data in Modern Internet Aplications [PDF]

open access: yes, 2014
据Gartner研究表明,每天我们要产生2.5QB的数据,而在目前全世界的所有的数据中,90%的数据是近2年内产生的[1]。这些数据来之与各个不同的地方,例如传感器收集到的天气的数据[2],在社交媒体网站上的帖子[3],数码相片和录像,购物产生的交易数据[4],甚至手机GPS的信号产生的地理数据[5]。那么这些数据就是所谓的大数据。 随着全球的企业,政府组织开始认识到大数据的重要性,由机器传感器或者移动设备产生的数据以一个巨大的比例膨胀。有关机构预测在接下来的五年当中,这样的数据会增长超过650 ...
林荣耀
core  

The Dependence of Properties on Structural Features in Macro/Micro Levels for PBF‐LB Fabricated Porous NiTi Alloy

open access: yesRare Metals, EarlyView.
ABSTRACT Porous NiTi alloys are widely used in biomedical and engineering fields. Using the PBF‐LB technique, the TPMS and Voronoi porous parts with a porosity of ∼67% and a minimum feature size of 0.15 ± 0.02 mm were fabricated. Although the bulk sample fabricated with the same parameters is defect‐free, μ‐CT reconstruction on the porous sample ...
Wen‐Hao Zeng   +7 more
wiley   +1 more source

Evidence-based nursing and application of Big Data (循证护理与大数据的应用)

open access: yes中西医结合护理, 2021
With the continuous progress, innovation and development of infrastructure technologies such as Internet and enterprise mobile informatization in the industrial mobile era, the development of modern information economy and society has been accelerating ...
YANG Fei (杨菲)   +4 more
doaj   +1 more source

Research of Clustering Method and Its Application for Big Data [PDF]

open access: yes, 2015
近些年来,随着计算机科学与技术的快速发展,在很多行业中产生了越来越 多的海量数据信息。聚类作为数据挖掘的一个非常受关注的分支学科,在这种情 况下得到了长足的发展,一系列经典的聚类算法被研究者提出,但目前能应用于 大数据聚类的算法不多,ApacheMahout推出的聚类算法只有5种,其中有4种 基于Kmeans算法开发的,Spark官方推出的聚类算法目前只有Kmeans。一些效 果较好的聚类算法,它们的时间复杂度比较高,开发出适应大数据聚类的难度较 大。传统的Kmeans可以用于大数据聚类 ...
汪宜东
core  

Enhanced Low‐Frequency Microwave Absorption and Corrosion Resistance of FeSiAl Using Low‐Melting‐Point Glass Phase Coatings

open access: yesRare Metals, EarlyView.
ABSTRACT This study developed a FeSiAl@LMPGP composite material to address the demand for low‐frequency electromagnetic absorption. Through controllable heat treatment, FeSiAl particles and PbO nanoparticles self‐assembled into a high‐density Mott–Schottky heterointerface structure, which exhibited a significant built‐in electric field (BIEF) effect ...
Yuqi Wang   +5 more
wiley   +1 more source

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