Results 61 to 70 of about 193,229 (203)

Spatial differentiation and influencing factors of county carbon emission performance in Zhejiang province under the background of county urbanization(县域城镇化背景下浙江省碳排放绩效的空间分异及其影响因素)

open access: yesZhejiang Daxue xuebao. Lixue ban
In the latter phase of China's urbanization trajectory, counties are poised to assume a pivotal role. Consequently, investigating the interplay between urbanization input factors and carbon emission performance holds paramount significance.
陈玉娟(CHEN Yujuan)   +3 more
doaj   +1 more source

Lithographic hotspot detection based on SVM and genetic algorithm(基于支持向量机及遗传算法的光刻热点检测)

open access: yesZhejiang Daxue xuebao. Lixue ban, 2011
提出一种基于支持向量机(SVM)及遗传算法(GA)的集成电路版图光刻热点检测方法.首先对版图样本进行离散余弦变换(DCT)以提取样本的频域特征,然后基于这些样本训练SVM分类器以实现对光刻热点的检测.为了提高光刻热点检测的精度及效率,采用遗传算法(GA)对频域特征进行选择,并同时优化SVM参数.实验结果表明,基于SVM及版图频域特征并结合遗传算法进行优化的光刻热点检测方法可以有效提高版图光刻热点的检测精度.
CAOKui-kang(曹葵康)   +2 more
doaj   +1 more source

生产统计系统分析与设计

open access: yes, 1988
本文介绍了作者在参加鞍钢线材股份有限公司计算机管理项目的开发中,如何运用结构化分析与结构化设计方法对生产统计子系统进行分析与设计;同时还对数据库的设计进行了详细讨论。它说明,在软件生命周期的系统分析和设计阶段,采用适当的软件方法,经过精心的分析和设计 ...
彭开原
core  

Co‐Teaching in a Virtual Intensive Study Language Programme: Insights From Team Ethnography

open access: yesInternational Journal of Applied Linguistics, EarlyView.
ABSTRACT As virtual study abroad becomes an increasingly important form of international education, little is known about how transnational teaching is organised and sustained across institutions. Using activity theory as an analytical framework and team ethnography as methodology, this study examines a virtual intensive study (VIS) programme delivered
Zhu Hua   +7 more
wiley   +1 more source

设备与管道保温的最优化设计方法

open access: yes, 1987
本文论述了隔热技术应用研究的重要内容之一,设备与管道保温的最优化设计方法.首先,提出了优选隔热材料的简化方法;其次,提出了变导热系数隔热材料用于输热管道与储热箱的最优化隔热设计方法,并在蒸汽管道保温应用中,取得了重大的节能和经济效益;第三,论述了输热管道多层隔热保温的最优化设计方法 ...
陆显洁, 吕筠锋, 方铎荣
core   +2 more sources

Efficient bit-parallel multiplier for finite field of trinomial using SPB and its weakly dual basis(不可约三项式有限域的高速并行比特乘法器)

open access: yesZhejiang Daxue xuebao. Lixue ban, 2010
在移位多项式的弱共轭基底的理论推导的基础上,提出了一种有限域上的并行比特乘法器的新结构.在由不可约三项式f(x)=xm+xk+ 1生成的域内,此种结构的并行比特乘法器需要m2个与门和m2 — 1个异或门.在同样的空间复杂度下,时间复杂度降低为,具有最短的关键路径.
LIDa-wei(李大为)   +2 more
doaj   +1 more source

AI foundation models in plant biology

open access: yesNew Phytologist, EarlyView.
Foundation models decode genomes, engineer proteins, phenotype crops, and drive AI agents across plant biology. This figure was created in BioRender (BioRender.com/xcmmkel). Summary Rapid technological progress has enabled plant biologists to accumulate unprecedented volumes of multi‐scale, multi‐modal data, yet this abundance of data has intensified ...
Haopeng Yu
wiley   +1 more source

Accountability in Government Use of AI: Citizen Concerns and Preferences

open access: yesPublic Administration, EarlyView.
ABSTRACT Government adoption of AI opens the “pandora's box” of accountability, a core aspect of public value. Despite the centrality of governmental AI accountability, citizens' concerns and preferences in holding governments accountable for AI usage remain poorly understood.
Naikang Feng, Yanto Chandra
wiley   +1 more source

Spatio-temporal distribution and influencing mechanism of the top 100 tourism counties(旅游百强县时空分布及其影响机制)

open access: yesZhejiang Daxue xuebao. Lixue ban
旅游业承载着人民对美好生活的向往,发展县域旅游逐渐成为推进城乡融合、助力美丽中国建设和促进共同富裕的重要抓手和有效路径。综合运用最邻近指数、核密度估计、重心模型、双变量空间自相关性和二元逻辑回归等方法,基于2019—2023年中国旅游百强县数据,分析了中国旅游百强县的时空分布和影响因素,探究了影响其进退的因素。研究表明:(1)旅游百强县总体呈“东多西少”的空间分布特征,并逐渐形成“一主(长三角)一副(川黔)”双核集聚格局;(2)自然环境因素、社会经济因素和政策规划因素等共同影响旅游百强县分布;(3 ...
魏健欣(WEI Jianxin)   +2 more
doaj   +1 more source

浅析二氧化碳灭火系统的设计[J]

open access: yes, 2011
二氧化碳灭火系统是目前应用非常广泛的一种现代化消防设备,具有设计参数完整、功能完善、工作准确可靠安装调试简单、操作维修方便等特点.适用于票据库、档案库、计算机房、图书馆、珍品库、配电房、电讯中心等重要场所的消防保护.本文着重介绍了高压管管网式全淹没二氧化碳灭火系统的原理、适用范围 ...
龚雪   +1 more
core  

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