Results 101 to 110 of about 20,289 (242)

Transient Numerical Analysis of Single Heat Pipe Failure in Heat Pipe Reactor [PDF]

open access: yes
As means to meet the needs of long-distance energy supply, safe power supply for remote areas facilities, power supply for the surface of the moon and Mars, and deep space and deep-sea exploration, the application of nuclear energy has attracted more and
HAN Ye1, , YANG Siyuan2, WEN Qinglong2, CHAI Baohua1, ZHANG Yakun1
core   +1 more source

Post-construction settlement and creep law of waste dumps [PDF]

open access: yes, 2016
The grain body creep of waste dumps including deceleration creep and constant creep was described by the Burgers model.Using the layered summation method,the vertical filling waste dump was sliced and the bottom part settled under the variable weight ...
GAO Yong-tao   +4 more
core   +1 more source

基于碳交易规制的易腐品订货决策研究 [PDF]

open access: yes, 2013
基于经济批量订货的思想,对冷链产品的制造商订货模型进一步深化,构建了不存在碳排放上限且不考虑碳交易机制、存在碳排放上限但不考虑交易机制、考虑碳交易机制订货模型,并主要通过数值分析的方法进行研究。结论表明:在不同的碳交易规制的环境下,需要对采购的策略(订货批量,订货周期)做出较大的调整来重新达到订货总成本最优,基于碳交易规制的订货模型具有更低的成本。另一方面,通过碳交易机制的方式实现有效的碳减排效果是有条件的,在不同的外界环境条件下,应该采用不同的碳规制措施和方法才能够有效降低碳排放量 ...
张庭溢, 计国君
core  

A new technique for analysis of synchronous counters constructed with flip-flops(分析由触发器构成的同步计数器的一种新方法)

open access: yesZhejiang Daxue xuebao. Lixue ban, 2011
为了简化由触发器构成的同步计数器的分析过程,提出一种简单、有效的方法.采用该方法,由计数器的逻辑电路图获得状态转移方程后,将其化成标准与或表达式,通过推导得出标准与或表达式中逻辑函数取值的规律,按照该规律,状态转移方程中次态值可直接由标准与或表达式得到,而不需要进行任何逻辑运算.通过对1个3变量计数器的分析表明,该方法省去了烦琐的计算,使得次态值的求取和真值表的创建更加快捷、方便.
YANDan-gui(严单贵)   +1 more
doaj   +1 more source

Numerical Analysis of Temperature Field of Static Grain Storage in Semi-underground Double-storey Squat Silos [PDF]

open access: yes
Grain temperature is one of the most important factors that affect the safety of grain storage. In order to reveal the distribution rule of grain storage temperature field in semi-underground double-storey squat silos(SUDSSS), the mathematical analysis ...
JIN Li-bing   +5 more
core   +1 more source

7075-T6高强铝合金方管轴心受压承载能力研究

open access: yesJianzhu Gangjiegou Jinzhan
为了研究7075-T6高强铝合金方管的轴心受压承载力,制作了9个试件进行轴心受压试验,得到了试件的极限承载力、破坏模式和荷载-轴向位移曲线。进行了试件的有限元数值分析,并将数值分析结果与试验结果对比,验证了有限元数值分析的准确性。采用有限元数值分析进行参数分析,获得了适用于7075-T6高强铝合金方管构件的整体稳定系数-相对长细比曲线,讨论了当相对长细比变化时局部屈曲对承载力的影响。结果表明,7075-T6高强铝合金方管具有一定的延性;建立的有限元模型可以精确模拟试件加载的全过程以及极限承载力 ...
刘均利   +5 more
doaj  

脑内各向异性扩散传质与吸附反应过程数值分析 [PDF]

open access: bronze, 2017
施柱 李宏顺   +3 more
openalex   +1 more source

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