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排序方式: 共有303条查询结果,搜索用时 15 毫秒
31.
32.
冯艳娜 《可编程控制器与工厂自动化(PLC FA)》2011,(2):68-69
本文介绍了基于ARM的微机打印机的硬件、软件设计与实现。系统采用ARM7S3C44BOX芯片控制EPSON公司M一150II型打印机芯实现了微型打印功能。 相似文献
33.
Yanna Li Hongying Dong Wanlin Cao Jianwei Zhang Yanli Guo 《The Structural Design of Tall and Special Buildings》2023,32(3):e2000
In order to expand the application of high-strength recycled concrete, five full-scale square high-strength recycled concrete columns (600 × 600 mm) were tested under the experimental axial compression ratio (ACR) of 0.54. The seismic behavior of reinforced high-strength recycled aggregate concrete columns under high ACR and the effects of recycled coarse aggregate (RCA) replacement ratio and ACR on the seismic behavior were analyzed. The results showed that the high-strength recycled concrete columns have potential to collapse-resistance capacity subjected to strong earthquakes. Under the similar concrete strengths, the mechanical properties of high-strength recycled aggregate concrete columns and ordinary concrete columns were comparable even under high ACR. As the ACR increased from 0.35 to 0.54, the bearing capacity increased by up to 12.6%, while the ductility decreased by up to 32.8%. The specimens with 100% RCA were more sensitive to ACR than those with 50% RCA. A four-fold restoring force model considering the effects of axial load, reinforcement ratio, shear span, and RCA replacement ratio was established, which was in good agreement with the experimental curves. 相似文献
34.
Finely dispersed tin alloy/oxide composites were synthesized via the reduction of tin oxide by aluminum under high-energy ball-milling. The morphology and crystal structure of the resulting samples were investigated by scanning electron microscopy (SEM), transmission electron microscopy (TEM), and X-ray diffraction (XRD). The electrochemical measurements reveal that Sn3Co/Al2O3 composite has higher initial efficiency and better cycle performance than Sn/Al2O3. The Sn3Co/Al2O3 composite electrode containing LA132 binder exhibited a reversible capacity about 540 mA h g−1 with good capacity retention. On the other hand, it is found that the influence of binder type on the electrode performance is remarkable. 相似文献
35.
Wei X Wang D Yang Y Xia M Li D Li G Zhu Y Xiao Y Ling W 《Journal of the science of food and agriculture》2011,91(6):1006-1013
BACKGROUND: Cyanidin‐3‐O‐β‐glucoside (Cy‐3‐g)‐rich foods have been reported to inhibit the onset of obesity, but whether the pure anthocyanin supplementation affects obesity remains uncertain. RESULTS: Cy‐3‐g supplementation significantly reduced obesity, accumulation of fat in visceral adipose and liver tissues, and plasma triglyceride levels. Furthermore, adenosine monophosphate (AMP)‐activated protein kinase phosphorylation (pAMPK) in the skeletal muscle and visceral adipose were significantly increased by Cy‐3‐g consumption. This was followed by the activation of lipoprotein lipase (LPL) in plasma and skeletal muscle but the suppression of this enzyme in visceral adipose. LPL activation in skeletal muscle cells and its suppression in adipocytes by Cy‐3‐g were blocked by inhibition of pAMPK. CONCLUSION: Our present data thus demonstrate that Cy‐3‐g improves obesity and triglyceride metabolism in KK‐Ay mice. The underlying mechanism is found to be partly related to the activation of LPL in plasma and skeletal muscle, and inhibition of LPL in adipose tissue following the activation of pAMPK. Copyright © 2011 Society of Chemical Industry 相似文献
36.
采用1,2,4-三羧基-3-羧甲基环戊烷二酐(TCA)、4,4’-二氨基二苯甲烷(MDA)及长侧链二胺4-十二烷氧基苯甲酸酯联苯酚-3’,5’-二胺基苯甲酸酯(DBPDA)共聚制备了一系列的聚酰亚胺。并对其溶解性能、透光性能及取向性能进行了测试。结果显示,聚酰亚胺在有机溶剂中可溶,成膜后紫外透光率较高,在波长400 n... 相似文献
37.
Yanna Vogiazou Bas Raijmakers Erik Geelhoed Josephine Reid Marc Eisenstadt 《Personal and Ubiquitous Computing》2007,11(1):45-58
In this paper we present our work in the design of ubiquitous social experiences, aiming to foster group participation and spontaneous playful behaviours in a city environment. We outline our approach of design for emergence: to provide just enough of a game context and challenge for people to be creative, to extend and enrich the experience of play through their interaction in the real world. CitiTag is our mixed reality testbed, a wireless location-based multiplayer game based on the concept of playground ‘tag’. We describe the design and implementation of CitiTag and discuss results from two user studies. 相似文献
38.
39.
Ahmad Naveed Huijun Yang Yuyan Shao Jun Yang Nuli Yanna Jun Liu Siqi Shi Liwen Zhang Anjiang Ye Bing He Jiulin Wang 《Advanced materials (Deerfield Beach, Fla.)》2019,31(36)
Dendrite and interfacial reactions have affected zinc (Zn) metal anodes for rechargeable batteries many years. Here, these obstacles are bypassed via adopting an intrinsically safe trimethyl phosphate (TMP)‐based electrolyte to build a stable Zn anode. Along with cycling, pristine Zn foil is gradually converted to a graphene‐analogous deposit via TMP surfactant and a Zn phosphate molecular template. This novel Zn anode morphology ensures long‐term reversible plating/stripping performance over 5000 h, a rate capability of 5 mA cm?2, and a remarkably high Coulombic efficiency (CE) of ≈99.57% without dendrite formation. As a proof‐of‐concept, a Zn–VS2 full cell demonstrates an ultralong lifespan, which provides an alternative for electrochemical energy storage devices. 相似文献
40.
针对连续状态空间的非线性系统控制问题,提出一种基于残差梯度法的神经网络Q学习算法。该算法采用多层前馈神经网络逼近Q值函数,同时利用残差梯度法更新神经网络参数以保证收敛性。引入经验回放机制实现神经网络参数的小批量梯度更新,有效减少迭代次数,加快学习速度。为了进一步提高训练过程的稳定性,引入动量优化。此外,采用Softplus函数代替一般的ReLU激活函数,避免了ReLU函数在负数区域值恒为零所导致的某些神经元可能永远无法被激活,相应的权重参数可能永远无法被更新的问题。通过CartPole控制任务的仿真实验,验证了所提算法的正确性和有效性。 相似文献