摘要：This paper proposes a kind of programmable logic element(PLE)based on Sense-Switch pFLASH *** programming Sense-Switch pFLASH,all three-bit look-up table(LUT3)functions,partial four-bit look-up table(LUT4)functions,latch functions,and d flip flop(DFF)with enable and reset functions can be *** PLE uses a choice of operational logic(COOL)approach for the operation of logic functions,it allows any logic circuit to be implemented at any ratio of combinatorial logic to *** intrinsic property makes it close to the basic application specific integrated circuit(ASIC)cell in terms of fine granularity,thus allowing ASIC-like cell-based mappers to apply all their optimization *** measuring Sense-Switch pFLASH and PLE circuits,the results show that the“on”state driving current of the Sense-Switch pFLASH is about 245.52μA,and that the“off”state leakage current is about 0.1 *** programmable function of PLE works *** delay of the typical combinatorial logic operation AND3 is 0.69 ns,and the delay of the sequential logic operation DFF is 0.65 ns,both of which meet the requirements of the design technical index.

摘要：A numerical solution of the weight function for a two-electrode electromagnetic flowmeter was proposed. The solution was obtained by using the finite element method based on the basic equation of a traditional two-electrode electromagnetic flowmeter. The two-dimensional distribution of the weight function of the electromagnetic flowmeter obtained was verified by the analytical solution. Three-dimensional distribution of the weight function was also presented in the paper. It can be employed to analyze the sensitivity and linearity of the electromagnetic flowmeter with non-uniform magnetic field, and even to assist the design of the excitation coil pair.

摘要：Traditional tumor models do not tend to accurately simulate tumor growth in vitro or enable personalized treatment and are particularly unable to discover more beneficial targeted *** address this,this study describes the use of threedimensional(3D)bioprinting technology to construct a 3D model with human hepatocarcinoma SMMC-7721 cells(3DP-7721)by combining gelatin methacrylate(GelMA)and poly(ethylene oxide)(PEO)as two immiscible aqueous phases to form a bioink and innovatively applying fluorescent carbon quantum dots for long-term tracking of *** GelMA(10%,mass fraction)and PEO(1.6%,mass fraction)hydrogel with 3:1 volume ratio offered distinct pore-forming characteristics,satisfactorymechanical properties,and biocompatibility for the creation of the 3DP-7721 *** analysis and quantitative real-time fluorescence polymerase chain reaction(PCR)were used to evaluate the biological properties of the *** with the two-dimensional culture cell model(2D-7721)and the 3D mixed culture cell model(3DM-7721),3DP-7721 significantly improved the proliferation of cells and expression of tumor-related proteins and ***,we evaluated the differences between the three culture models and the effectiveness of antitumor drugs in the three models and discovered that the efficacy of antitumor drugs varied because of significant differences in resistance proteins and genes between the three *** addition,the comparison of tumor formation in the three models found that the cells cultured by the 3DP-7721 model had strong tumorigenicity in nude *** evaluation of the levels of biochemical indicators related to the formation of solid tumors showed that the 3DP-7721 model group exhibited pathological characteristics of malignant tumors,the generated solid tumors were similar to actual tumors,and the deterioration was *** research therefore acts as a foundation for the application of 3DP-7721 models in drug devel

摘要：基于上海数字文化产业兴趣点(POI)数据,运用ArcGIS软件,结合核密度分析、空间自相关分析、标准差椭圆分析等方法,分析上海数字文化产业空间集聚特征与空间分异格局,探讨上海数字文化产业空间分异的影响因素及其交互机制。研究发现:(1)上海数字文化产业总体集聚水平较高,区域集聚程度差异化明显;(2)上海数字文化产业在空间上呈非随机性分布,具有明显的空间自相关性,由南向北呈现出阶梯式分异格局;(3)上海数字文化产业门类集聚程度存在差异,其中应用软件开发类集聚程度最高,创意内容制造服务类类集聚程度最低。

摘要：目的基于感性设计方法对战斗机座舱开展设计研究,探究战斗机座舱的工业设计方法,以提升飞行员的操作感受和用户体验。方法对相关文献进行梳理,厘清感性设计的概念和理论来源;对装备感性设计和飞机座舱的工业设计方法进行文献回顾;针对以技术为主导的战斗机座舱设计,其外观设计受到功能的严格限制。通过构建基于创意感性的战斗机座舱感性设计方法,将“感性”思维融入战斗机座舱的工业设计程序,通过风格意象、主题分析、主题造型化等设计阶段产出设计方案,最后进行验证评估。结论根据感性设计方法对战斗机座舱开展概念设计案例实践,验证了感性设计方法的可行性,为战斗机座舱工业设计提供相应的参考建议。

摘要：为设计并且调试提供一个模拟系统平台一小自治在水下车辆(AUV ) 运动控制器，一自由(6-DOF ) 六度为推进器和鳍与附器控制的 AUV 的动态模型被检查。基于动态模型，为 AUV 运动的一个模拟系统被建立。典型运动的不同类型被模仿分析运动表演和 AUV 的可操作性。以便在 AUV 的运动表演上评估附器的影响，有或没有附器的 AUV 的模拟被执行并且比较。结果证明 AUV 有或没有附器有好可操作性。

摘要：设计源效应是指企业产品设计来源信息对消费者产品偏好和企业态度的影响。目前,专业设计师、用户和AI是三种常见的产品设计源。这三种产品设计源通过不同的作用机制对消费者心理和行为产生积极或消极的影响。其中,能力是专业设计源效应产生的作用机制,能力、权力和心理距离是用户设计源效应产生的作用机制,而价值和信息是AI设计源效应产生的作用机制。同时,设计源效应是有作用条件的,会受到消费者、产品、企业因素的约束。未来研究可以深入探讨消费者对混合设计源的反应、进一步探讨设计源效应的作用机制和作用条件。

摘要：在城市更新的时代背景下,高密度、高聚集人居环境中的口袋公园设计与改造成为景观设计领域不可忽视的问题。将可交互数字艺术与景观设计相融合,通过理论溯源,探索基于多学科交叉的数字景观设计策略——数字场景营造。再以北京市海淀区中关村口袋公园的设计实践为例,进一步检验数字场景设计策略在口袋公园设计中的优势与不足。

摘要：设计阶段的大型矿井提升机主轴承随机振动系统的设计可靠性分析因试验样本不足,无法获取振动加速度响应的完备概率信息。提出了概率信息不完备下大型矿井提升机主轴承设计可靠性分析的技术路线:滚动轴承多尺度耦合系统动力学模型-振动加速度概率密度演化-概率密度演化路径随机过程建模-振动功率谱密度的概率分布-基于条件概率的设计可靠度计算。运用已采集的工况数据驱动建立滚动轴承多尺度耦合系统动力学模型,开展了振动加速度概率密度演化研究;基于概率密度演化和Karhunen-Loève展开,提出了滚动轴承振动加速度的非平稳随机过程建模方法,获得了滚动轴承振动加速度随机序列的孪生数据;研究了大型矿井提升机主轴承振动加速度功率谱密度的概率分布,并计算了大型矿井提升机主轴承在服役时间上的设计可靠度指标。

摘要：针对我国香蕉秸秆粉碎还田作业过程中香蕉秸秆粉碎质量差,秸秆缠绕堵塞等问题,设计了一种双定刀滑切防缠式香蕉秸秆粉碎还田机。基于滑切定理,解析了粉碎刀随轴转动过程中的动态滑切角和粉碎定刀滑切角的相对作用原理,以等速螺线设计L形粉碎定刀刀刃曲线,确定了粉碎刀结构参数;对香蕉秸秆缠绕粉碎刀辊进行受力分析,设计防缠绕板并确定装配数量与结构参数;以装置前进速度、粉碎刀辊转速、防缠绕板高度为试验因素,以香蕉秸秆粉碎合格率、抛撒不均匀度和香蕉秸秆缠绕数量为评价指标进行三因素三水平正交试验,建立因素与指标的响应面数学模型。试验结果表明,最优参数组合为作业机前进速度1.5 m/s、防缠绕板高度41.6 mm、粉碎刀辊转速1800 r/min,此时香蕉秸秆粉碎合格率为93.8%,香蕉秸秆缠绕数量为26,香蕉秸秆抛撒不均匀度为12.1%。以最优组合进行田间试验验证,试验结果表明双定刀滑切防缠式香蕉秸秆粉碎还田机整机防缠性能优越,满足设计要求。