Results 1 to 10 of about 447 (54)

A new design method of shift counters with self-correction(能自启动的移位型计数器的新设计)

Zhejiang Daxue xuebao. Lixue ban, 2000
本文分析了移位型计数器不能自启动的原因，在此基础上提出了基于多码状态分配的能自启动的移位型计数器的设计方法.该方法避免了二次设计，具有设计简捷及电路较为简单等优点.
SONGLing-gui(宋灵贵), XUYue-hua(徐月华), CHENXie-xiong(陈偕雄)   +2 more
doaj   +1 more source

Design of self-correction in twisted ring counter based on shift registers(基于集成移位寄存器的扭环形计数器自启动设计)

Zhejiang Daxue xuebao. Lixue ban, 2013
分析了扭环形计数器工作时的状态转换过程，分析了集成移位寄存器的逻辑功能，提出了用集成移位寄存器74LS194构成扭环形计数器的一些新的设计方案，即移位寄存器的状态变化在右移移位或并行输入符合右移规律的数码、反馈实现取反循环移位的基础上，对任何一位触发器的激励函数进行逻辑修改，可实现扭环形计数器自启动设计.所述方法的创新点是提出了MSI集成移位寄存器改变应用方向的逻辑修改方法.
MAJing-min(马敬敏)
doaj   +1 more source

Design of self-correction in shift register counter based on next state Karnaugh maps(基于次态卡诺图的移位寄存器型计数器的自启动设计)

Zhejiang Daxue xuebao. Lixue ban, 2011
分析了移位寄存器型计数器工作时的状态转换过程，提出了移位寄存器型计数器的设计可在保持右移移位寄存器内部结构不变的基础上，只求解第1位触发器激励函数的设计方法.分析了触发器次态函数与激励函数的关系，提出了在次态函数卡诺图上进行激励函数最小化求解与检查无效状态所赋次态值及逻辑修改同步进行的移位寄存器型计数器自启动设计方法.
TENGXiang(腾香)
doaj   +1 more source

多级耦合静态管道混合器的结构参数与混合效率优化的评价方法

Jingshui jishu
【目的】混合是混凝过程的关键环节，会显著影响混凝效果。静态管道混合器是重要的混合设施，具有种类多、混合方式不同、型式各异等特点，且混合效率与结构参数密切相关。但静态管道混合器的结构及其优化仍缺少有效的表征方法与评价手段。本文旨在建立一种静态管道混合器结构参数与混合效率的协同优化方法，为水处理混凝工艺中混合器的设计与性能优化提供理论依据。【方法】本文构建了DN200型多级耦合静态管道混合器三维模型，采用计算流体动力学(CFD)方法分析了药液体积分数分布与流场变化规律 ...
Zhao Jiaheng, Li Xing, Chi Wenjun, Chi Guozheng   +3 more
doaj   +1 more source

[Master manipulator of vascular intervention surgical robot based on haptic feedback]. [PDF]

Sheng Wu Yi Xue Gong Cheng Xue Za Zhi
Han G, Sun Z, Tang X.
europepmc   +1 more source

[Dual-wavelength photoacoustic microscopy for evaluation of microcirculatory dysfunction and spatial heterogeneity in mice with liver fibrosis]. [PDF]

Nan Fang Yi Ke Da Xue Xue Bao
Xia Q, Qiu Y, Li H, Nie L.
europepmc   +1 more source

[Impact of ultrasonic scaling on abutment screw torque in implant restorations]. [PDF]

Beijing Da Xue Xue Bao Yi Xue Ban
Tang Y, Zhao X, Yang X, Jia H, Liu Y.
europepmc   +1 more source

[Analysis of complicating factors in endodontic microsurgery]. [PDF]

Hua Xi Kou Qiang Yi Xue Za Zhi
Tan X, Peng L, Su Q, Xu X, Yang J, Song D, Wang C, Zhang L, Ye L, Huang D.   +9 more
europepmc   +1 more source

[A Review of Archaeological Studies on Dento-maxillofacial Deformities]. [PDF]

Sichuan Da Xue Xue Bao Yi Xue Ban
Luo G, Deng D, Zhou J, Zhou C.
europepmc   +1 more source

[Petroleum ether fraction of <i>Myrica nana</i> roots relieves spasmodic abdominal pain in mice by inhibiting intestinal smooth muscle spasm]. [PDF]

Nan Fang Yi Ke Da Xue Xue Bao
Yang S, Chen W, Chen X, Tian K, Xiong Y, Sun J, Huang L, Huang X, Wang Z.   +8 more
europepmc   +1 more source