Integrated System of Solar Cells with Hierarchical NiCo2O4 Battery-Supercapacitor Hybrid Devices for Self-Driving Light-Emitting Diodes

An integrated system has been provided with a-Si/H solar cells as energy conversion device,NiCo2O4 battery-supercapacitor hybrid(BSH)as energy storage device,and light emitting diodes(LEDs)as energy utilization device.By designing three-dimensional hierarchical NiCo2O4 arrays as faradic electrode,with capacitive electrode of active carbon(AC),BSHs were assembled with energy density of 16.6 Wh kg-1,power density of 7285 W kg-1,long-term stability with 100% retention after 15,000 cycles,and rather low self-discharge.The NiCo2O4//AC BSH was charged to 1.6 V in 1 s by solar cells and acted as reliable sources for powering LEDs.The integrated system is rational for operation,having an overall efficiency of 8.1% with storage efficiency of 74.24%.The integrated system demonstrates a stable solar power conversion,outstanding energy storage behavior,and reliable light emitting.Our study offers a precious strategy to design a self-driven integrated system for highly efficient energy utilization.

A Driving Strategy Model of Self-Driving Cars

The self-driving cars are highly developed and about to meet the market, but the driving strategies and corresponding behaviors with others still need to be tested. In this paper, based on its characteristics and behaviors of manual-driving vehicles, we propose the driving strategies of manual-driving cars as well as self-driving cars. And we use the cellular automaton to simulate the traffic reality under different conditions, and to evaluate the efficiency of a road when self-driving cars are put into use. This research can be a reference by traffic planning and vehicles performance test, and further research can be designed in a model which can calculate the efficiency of a road when the percentage of self-driving cars are different.

Balance of Internal Drive, Ego and Super Ego through Self-Hypnosis

The paper discusses about the influence of Self-Hypnosis on the three important qualities determining the personality trait of an individual namely: Internal Drive (ID), Ego and Super Ego. Self-Hypnosis is a technique that regulates one’s own mind by setting attributes to achieve the basic goals in life having a wider range of variation from one individual to another. There is a constant conflict occurring in an individual’s mind between ID, Ego, and Super Ego throughout his life time till death. The paper work attempts to bring certain facts about the ID, Ego and Super Ego and how to balance between the three through Self-Hypnosis.

Dynamics of a self-propelled particle under different driving modes in a channel flow

In this paper, a model that combines the lattice Boltzmann method with the singularity distribution method is proposed to simulate a self-propelled particle swimming（exhibiting translation and rotation） in a channel flow. The results show that the velocity distribution for a self-propelled particle swimming deviates from a Maxwellian distribution and exhibits highvelocity tails. The influence of an eccentric potential doublet on the translation velocity of the particle is significant. The velocity decay process can be described using a double exponential model form. No large differences in the velocity distribution were observed for different translation Reynolds numbers, rotation Reynolds numbers, or regular intervals.

The Effect of Self-Driving Car on Urban Traffic

Based on the idea of infinitesimal analysis, we establish the basic model of relation between speed and flow. Since putting a certain amount of self-driving car will affect the average speed of mixed traffic flow, we choose the proportion of self-driving car to be a variable, denoted by k. Based on the least square method, we find two critical values of k that are 38.63% and 68.26%. When k 38.63%, the self-driving cars have a negative influence to the traffic. When 38.63% < k < 68.26%, they have a positive influence to the traffic. When k > 68.26%, they have significant improvement to the traffic capacity of the road.

Parameter Self - Learning of Generalized Predictive Control Using BP Neural Network

This paper describes the self—adjustment of some tuning-knobs of the generalized predictive controller(GPC).A three feedforward neural network was utilized to on line learn two key tuning-knobs of GPC,and BP algorithm was used for the training of the linking-weights of the neural network.Hence it gets rid of the difficulty of choosing these tuning-knobs manually and provides easier condition for the wide applications of GPC on industrial plants.Simulation results illustrated the effectiveness of the method.

Self - Crosslinking Behavior of Self - Emulsion Water - Based Polyure-thane Coating Agents

The relation between structures and properties of polyurethane are investigated by modern physical and chemical methods.The results obtained are as follows:the effects of the content of self-crosslinking agent on the properties of polyurethane,i.e.,dispersion stability,dynamical viscoelasticity and mechanical properties are discussed.It is found that the optimum molar ratio of epichlorohydrin and diethylenetriamine is 1:2.A mois-

Culture Self- Consciousness in Transmission of Chinese Philosophy from the Perspective of English Globalization -- Taking the Belt and Road Initiative for Example

The Belt and Road Initiative contains the aspiration of Chinese nation to pursue ideological freedom and desire of strengthening international exchanges and cooperation. This paper takes the Belt and Road Initiative for example,emphasizing the interpretation of the inheritance and development of Chinese culture so as to study the importance of Culture Self-Consciousness in Chinese Philosophy,in the context of English globalization. That is to say,this paper stresses the spirits and the stand of nation 's demonstration on pursuing peace,cooperation and sustainable development in the civilization continuity from traditional China to the contemporary China,with practical philosophic view.

钯-铂基双面神微马达的运动行为研究

为了研究双金属基微马达的驱动机制,利用磁控溅射技术制备聚苯乙烯(PS)@钯Pd-铂Pt双面神微马达,采用扫描电子显微镜和光学显微镜表征该微马达的结构、形貌和运动行为,并通过对比实验和数值模拟推测验证该微马达驱动机制。结果表明:PS@Pd-Pt微马达由Pd、 Pt双金属层在PS微球表面半包覆形成,具有双面神结构,直径约为2μm;PS@Pd-Pt双面神微马达在过氧化氢H_(2)O_(2)溶液中一开始朝着PS侧正向运动,随后速度逐渐减小,然后发生自发转向朝着Pd-Pt双金属侧反向运动;该微马达正向运动的驱动机制为Pt催化H_(2)O_(2)产生的非离子型自扩散泳以及Pt层厚度不均匀导致的自电泳共同作用,反向运动的机制为外部Pt与内部Pd双金属形成的自电泳作用。

聚合诱导-液晶驱动自组装制备含氟聚合物纳米纤维

含氟聚合物由于他们的低表面能、光电性能和生物相容性已经广泛用于各个领域。本文通过光引发在50℃下制备了聚甲基丙烯酸二甲氨乙酯-b-聚甲基丙烯酸2-(全氟辛基)乙酯(PDMAEMAm-b-PFMAn)纳米纤维。不同于一般的纳米纤维,得到的纳米纤维表面具有独特的凹凸起伏形似珍珠项链。通过动力学研究揭示了珍珠项链状纳米纤维的组装过程并且探究了反应温度、溶剂组成以及大分子链转移剂的聚合度对珍珠项链状纳米纤维的影响。结果表明,含氟液晶珍珠项链状纳米纤维的形成与液晶驱动力、核表面张力以及亲-疏溶剂的界面能三者的平衡关系相关。

Torsional self-excited vibration of rolling mill

The roller’s torsional self excited vibration caused by roller stick slip, and its influence on strip surface quality have been studied. Based on analysis of roller working surface stick slip, roller rotation dynamics equations have been established. The nonlinear sliding frictional resistance has been linearized, and dynamics equations have been solved according to the characteristics of stick and slip between roller and strip. The results show that: 1) with decreasing stick time t 1, torsional vibration wave pattern gradually transforms from serration into sinusoid, and frictional self excited vibration can cover all frequency components which are lower than that of free vibration; 2) stick time t 1 is directly proportional to torque increment Δ M R , and is inversely proportional to live shaft stiffness K and drive shaft rotational velocity ω ; 3) when slip time t 2 is basically steady, the longer the stick time, the larger the energy that system absorbs and discharges. As the slip time is a constant, it easily arouses strip surface shear impact and surface streaks.

长三角地区潜在自驾旅游流及网络结构特征--基于修正引力模型

基于旅游修正引力模型,构建自驾游目的地吸引力和客源地出游力综合评价指标体系,对长三角地区潜在自驾旅游流进行测度,并采用社会网络分析法探究自驾旅游流网络结构及节点特征。结果表明:1)长三角地区呈现客源地出游力“中南强,北弱”和目的地吸引力“东强西弱”格局。2)潜在自驾旅游流网络密度偏低,城市间联系不紧密,呈现明显的“核心-边缘”格局。3)南京、杭州等城市中心性高,成为自驾旅游流网络中的核心枢纽及集散中心;苏州、无锡等城市为次核心;淮北、蚌埠、阜阳等13个城市处于网络中的边缘地位。4)南京、杭州、苏州等8个城市位于网络中的结构洞位置,具有更强的控制性、独立性和更突出的区位优势。

基于“推-拉”理论的自驾越野车探险旅游动机研究

近年来,国内越野车销量增长迅速,自驾越野车探险旅游逐渐升温。这类游客比一般旅游者更多地深入偏远地区,其旅游活动对促进地方经济发展、缩小地域差距有一定意义。基于“推-拉”理论,明确了自驾越野车探险旅游的动机因子并通过问卷调查法进行定量测度与分析,同时调查了游客基本行为特征和人口统计学特征,并分析人口统计学特征对动机的影响,而后进一步分析了推力动机和拉力动机各因子之间的相关性。最后,根据分析结论提出些许可供旅游目的地规划与管理参考的意见和建议:应当进一步发挥越野车探险旅游市场对目的地经济发展的促进作用,但应将资源保护放在首位,同时需提升越野车探险旅游活动组织和开展的专业性、合理布设救援及能源补给站点,并可结合目的地具体实际实行分级、分类、分时的精细化管理制度。

Belousov-Zhabotinsky反应自振荡水凝胶材料的性能及仿生功能

材料在微观层面上的性能与其宏观功能间的关联关系,是仿生软材料研究领域的主要关注点以及材料设计的基础。以Belousov-Zhabotinsky反应自振荡水凝胶(BZ胶)为代表,这种由化学信号波驱动和调制,从而将微观构象转变和配位调节为具有宏观运动功能的软材料类型,是近年来仿生材料研究的热点之一。该类材料工作于非平衡态,其运动功能具有内驱动性、仿生性、程控性、自适应性和无缆化等特性。本文综述了BZ胶的微观分子构象、化学能-机械能的转换、流变学性能,以及用BZ胶的宏观活性材料制备的软马达的仿生运动功能设计等内容的主要研究进展,讨论了其中亟待解决的关键问题,并提出了未来可行的解决方案。

3WFZ-12型自走式高秆作物施肥喷药机的研究

采用液压折腰转向原理对自走式施肥喷药机进行了设计研究。该机1次可完成喷药12行,施肥3行;整机体积小,转弯半径小,操作方便,保养维修简单安全。整机结构配置新颖独特,使用高地隙喷药施肥通用底盘、全液压喷药系统控制和机电一体化施肥装置。驱动轮设计为前后两轮并排驱动方式,使其对土壤附着力加大,从而增加牵引力。

应变SiGe SOI p-MOSFET温度特性研究

SiGe SOI p-MOSFET在高频、高速、低功耗、抗辐射方面具有极大的优势。但二氧化硅埋层较低的热导率以及SiGe材料较低的热稳定性,使器件内部自加热效应的减弱或消除成为提高器件温度特性的关键因素。对应变SiGe SOI p-MOSFET温度特性机理进行研究,给出了三种缓解MOS-FET器件内部自加热效应的结构,并对其效果进行对比分析。结果表明:DSOI结构不适宜于低压全耗尽型SOI器件;Si3N4-DSOI结构对自加热的改善幅度较小;Si3N4埋层结构效果最好,尤其在低温领域改善更为明显。

4MZ-2(3)自走式采棉机静液压驱动应用分析

通过对 4MZ 2 (3)自走式采棉机方案特点和变量泵 -定量马达的调节性能的分析表明 ,采用静液压无级变速与机械有级变速组配的驱动方案在满足采棉机采棉作业、运输的要求下 ,实现了不同范围内的无级变速度 。

4BZ-800型荸荠收获机设计与试验

针对荸荠(Eleocharis dulcis)收获劳动强度大和可应用于实际生产的收获机具匮乏的问题,结合荸荠种植田土壤条件和现有人工收获方式,设计了一种应用于带水收获的自走式荸荠收获机。该机由行走系统、传动系统、旋转扰动装置、提升分离装置、收集装置等组成,整机传动系统分为液压传动部分和机械传动部分,液压传动部分为收获机行走系统和挖掘收获装置提供动力,可实现机具行走速度控制、挖掘收获装置高度调节、旋转扰动装置转速控制、提升分离装置转速控制,机械传动部分可为各级旋转扰动辊及提升分离装置间提供稳定的转速差,保障收获过程顺利进行。三级旋转扰动辊构成旋转扰动装置,实现对土壤和水分的充分扰动混合;齿形挖掘铲和升运链构成提升分离装置,完成荸荠果实的挖掘、果土分离、升运工作。田间试验结果显示,该机可一次性完成荸荠的挖掘、果土分离、升运、收集等工作,试验条件下该型荸荠收获机田间道路最大行驶速度为0.97m/s,田间差速转向最小转向半径为2.1 m,原地转向半径为1.3 m,最大爬坡角度为24.2°,果实挖净率为53.19%,损伤率4.21%。

DQ-600Y1连续管钻机专用顶驱装置设计

在吸收国内外先进顶驱经验的基础上,研制了DQ-600Y1连续管钻机专用顶驱装置。介绍了该顶驱的结构方案、技术参数及仿真计算,重点介绍了顶驱一体化分体游车、井架一体化的双导轨、分体式三维可调自润滑滑车等设计特色。计算结果表明,该顶驱的强度达到了设计要求,满足连续管钻机钻井工况的要求。

楔形铜基底-单层石墨烯覆层表面液滴自驱动研究

液滴在织构基底上的自驱动对于理解一些生物表面水的定向运输和自清洁具有重要意义.本文提出了一种楔形铜基底-单层石墨烯覆层结构,实现了水滴从楔形基底尖端向宽端的定向快速自驱动.运用分子动力学方法研究了液滴在织构基底上的自驱动行为,结果表明,受基底表面润湿梯度和Young-Laplace压力梯度驱动的水滴最大速度可达73.8 m/s.能量变化规律表明,液滴势能和液滴与基底之间的相互作用能存在竞争关系,使得液滴与基底之间的相互作用能有部分转化为液滴势能,部分作用于液滴驱动.从理论上给出了楔形基底上液滴的最大位移与楔形基底角度、基底润湿性和液滴表面张力之间的关系,通过分析微纳尺度楔形基底宽度的非连续线性增加对液滴自驱动的影响,解释了液滴最大位移的理论值与模拟值的差异.此外,发现了尺寸较小的液滴更易获得较大的自驱动速度,分析了高速运动的小液滴在无润湿梯度基底上的长距离减速运动对液滴位移规律的影响,明确了楔形基底两侧悬浮状态的石墨烯对增强液滴输运效率的作用机制.研究结果将对实现液滴自驱动的单层石墨烯覆盖的功能织构表面设计具有理论指导意义.