Results 11 to 20 of about 20,455 (123)
Dizhen xuebao, 2020 针对传统频域法拟合人工地震波过程中迭代效率低下的问题，本文提出使用考虑迭代相关的拟合方法与考虑相位谱的拟合方法相结合的综合方法，分别以 《公路桥梁抗震设计规范》 中的设计谱和核电厂设备抗震需求谱为拟合对象，对比了改进的综合方法与传统方法的优劣。结果显示：改进的综合方法对于目标设计谱的拟合精度较传统方法有明显提升，尤其是在反应谱的高频段和低频段；改进方法对于 《公路桥梁抗震设计规范》 中设计谱的拟合效果好于对核电厂设备抗震需求谱的拟合效果。
Haoyu Xie +3 more
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Design of multivalued shift-register type counter(多值移位型计数器设计)
Zhejiang Daxue xuebao. Lixue ban, 2005 分析和讨论了基于全状态图的多值移位型计数器的设计方法，指出了当将该方法用于更多值的移位型计数器的设计时，将变得非常复杂，失去了直观性和方便性的特点.提出了多值全状态表及基于全状态表的多值移位型计数器设计方法.此方法能解决上述问题，并给出了二变量四值移位型计数器的设计实例.
WUGui-chu(吴桂初) +2 more
doaj +1 more source
Zhejiang Daxue xuebao. Lixue ban, 2001 本文总结了由D触发器构成2n进制同步计数器的设计方法，并在此基础上分析了如何用逻辑函数修改技术实现任意进制同步计数器.通过实例设计表明，推广此设计方法于任意进制的加、减法计数器具有使用方便、设计迅速等优点和一定的实用意义.
ZHENGMao-sheng(郑茂生) +2 more
doaj +1 more source
Jianzhu Gangjiegou Jinzhan, 2023 钢结构高强螺栓T形件受拉连接的设计需考虑撬力影响，设计方法比较复杂，欧洲EC3、美国AISC和中国JGJ82等规范的设计方法均采用T形件模型理论，设计原理基本一致，但高强螺栓抗拉承载力设计值取值不同，各参数及钢材强度设计值取值也略有差异，故其设计结果也存在一定差异。对中美欧规范高强螺栓T形件受拉连接设计方法进行了比较分析，结合试验结果和算例分析了各国规范设计结果的差异。并根据分析结果、美欧规范方法以及相关参考文献研究结论提出了我国JGJ82修正设计方法，使得设计结果在保证安全储备的前提下更加经济 ...
刘秀丽, 曾明, 王燕
doaj
Design of ECL flip-flop based on threshold-arithmetic algebraic system(基于阈算术代数系统的ECL触发器设计)
Zhejiang Daxue xuebao. Lixue ban, 2014 针对ECL触发器设计中存在电路结构复杂、设计过程繁琐等不足，在分析ECL电路特点和阈算术代数系统的基础上，设计出一种ECL算术运算单元电路，进而提出了基于阈算术代数系统的ECL触发器的设计方法，具体设计了 ECL二值主从型D触发器、ECL三值D锁存器以及ECL三值T触发器置数单元.采用TSMC 0. 18 µm工艺参数对所设计的电路进行HSPICE模拟，结果显示，所设计的电路具有正确的逻辑功能和良好的瞬态特性，验证了本方法的正确性.与以往的ECL触发器电路相比，本方法设计的ECL触发器电路结构有所简化 ...
YAOMaoqun(姚茂群) +1 more
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Equine Veterinary Journal, EarlyView.Abstract Background The middle conchal sinus (MCS) (ethmoidal sinus) remains one of the least understood equine paranasal compartments. Despite recognition of its involvement in sinonasal disease, disorders of the MCS often remain underdiagnosed in the absence of computed tomographic (CT) imaging due to limited anatomical understanding and challenges ...
J.‐B. Pavard +3 more
wiley +1 more source
Wildlife Letters, EarlyView.Using a 3‐year, broad‐scale camera‐trap network in western Kansas, we tested whether coyotes and American badgers exhibit spatiotemporal patterns consistent with coordinated hunting. Despite high diel activity overlap, detection‐conditioned co‐detections occurred far less frequently than expected under independence, and short‐term temporal sequencing ...
Ty J. Werdel +3 more
wiley +1 more source
Inferring alternative ecosystem states with field survey data
Methods in Ecology and Evolution, EarlyView.Abstract Many ecosystems potentially exhibit alternative stable states, where distinct states can coexist under identical environmental conditions. While simulation models have generated key hypotheses in alternative stable states theory, they often rely on scale‐free parameters disconnected from real ecosystems.
Ning Chen +10 more
wiley +1 more source
Comprehensive framework for assessing and optimizing existing research networks
Conservation Biology, EarlyView.Abstract Conservation, monitoring, and research networks, or collections of ecological research sites unified under a common mission of data collection or a research mission, are essential infrastructure for understanding large landscapes. However, most networks developed opportunistically over decades rather than through systematic design, creating ...
Alyson East +2 more
wiley +1 more source
Conservation Biology, EarlyView.Abstract The design of experiments to investigate the combined effects of multiple stressors requires exposing target organisms to multiple combinations of stressor doses. Concurrent manipulation of stressors is often infeasible with wildlife, but long‐lasting health effects allow individual health to be used as an integrator of prior stressor exposure.
Enrico Pirotta +24 more
wiley +1 more source