Analysis of Young Girls’Eagerness to Spend for Disney Virtual Characters Based on Marketing Mix Theory

A virtual character is a design of a fictitious creature with distinctive characteristics created by people,and Disney virtual characters are those Intellectual Property(IP)images that appeared in Disneyland and Disney movies.This investigation aimed to explore why many younger females are keen to spend money on Disney virtual characters.This paper adopted the Marketing Mix Theory strategy(product,price,placement,and promotion(4P)),and the SWOT analysis method has been utilized.This paper investigated the relationship between the 4Ps and consumers’purchasing intentions,and it turned out that unique design and effective promotion in this Disney case would promote consumers’purchase intention,while the higher price and less accessible placements affected their purchase intentions.Thus,the high price and limited places somewhat inhibit customers’desire to buy;due to the attractiveness of the product itself and the promotion on the internet,the target consumers are still willing to consume.

A new method for evaluating the firing precision of multiple launch rocket system based on Bayesian theory

How to effectively evaluate the firing precision of weapon equipment at low cost is one of the core contents of improving the test level of weapon system.A new method to evaluate the firing precision of the MLRS considering the credibility of simulation system based on Bayesian theory is proposed in this paper.First of all,a comprehensive index system for the credibility of the simulation system of the firing precision of the MLRS is constructed combined with the group analytic hierarchy process.A modified method for determining the comprehensive weight of the index is established to improve the rationality of the index weight coefficients.The Bayesian posterior estimation formula of firing precision considering prior information is derived in the form of mixed prior distribution,and the rationality of prior information used in estimation model is discussed quantitatively.With the simulation tests,the different evaluation methods are compared to validate the effectiveness of the proposed method.Finally,the experimental results show that the effectiveness of estimation method for firing precision is improved by more than 25%.

Fully Quantized Theory of Six-Wave Mixing with Matter Waves

我们证明充分使量子化的四波浪的混合罐头的那个 Wu-Yang 理论被概括到六波浪的混合并且导出描述六波浪的混合的量动力学的联合方程的分析答案。

Thermodynamic properties and mixing thermodynamic parameters of binary homogeneous metallic melts

After the investigation on the thermodynamic properties and mixingthermodynamic parameters of binary homogeneous metallic melts involving compound, peritectic as wellas solid solution, it was found that the equations of mixing free energy DELTA G^m and excess freeenergy DELTA G^(XS) of them can he expressed by the following equations: DELTA G^m = SIGMA x [SIGMAN_i DELTA G_I^(THETA) + RT(SIGMA N_j ln N_j + SIGMA N_i ln N_i )] and DELTA G^(XS) = DELTA G^m -RT(a ln a + b ln b), respectively.

Thermodynamic Properties and Mixing Thermodynamic Parameter of Binary Metallic Melt Involving Compound Formation

Based on the coexistence theory of metallic melts involving compound formation, the theoretical calculation equations of mixing thermodynamic parameters are established by giving up some empirical parameters in the associated solution model. For Fe-Al, Mn-Al and Ni-Al, the calculated results agree well with the experimental values, testifying that these equations can exactly embody mixing thermodynamic characteristics of these melts.

Bending of orthotropic plates resting on Pasternak's foundations using mixed shear deformation theory

The mixed first-order shear deformation plate theory（MFPT） is employed to study the bending response of simply-supported orthotropic plates.The present plate is subjected to a mechanical load and resting on Pasternak＇s model or Winkler＇s model of elastic foundation or without any elastic foundation.Several examples are presented to verify the accuracy of the present theory.Numerical results for deflection and stresses are presented.The proposed MFPT is shown simplely to implement and capable of giving satisfactory results for shear deformable plates under static loads and resting on two-parameter elastic foundation.The results presented here show that the characteristics of deflection and stresses are significantly influenced by the elastic foundation stiffness,plate aspect ratio and side-to-thickness ratio.

Calculation of Viscosities of Liquid Mixtures Using Eyring’s Theory in Combination with Cubic Equations of State

Cubic equations of state EOS have been combined with the absolute rate theory of Eyring to calculate viscosities of liquid mixtures. A modified Huron-Vidal gE-mixing rule is employed in the calculation and in com- parison with the van Laar and the Redlich-Kister-type mixing rule. The EOS method gives an accurate correlation of liquid viscosities with an overall average deviation less than 1% for 67 binary systems including aqueous solu- tions. It is also successful in extrapolating viscosity data over a certain temperature range using parameters obtained from the isotherm at a given temperature and in predicting viscosities of ternary solutions from binary parameters for either polar or associated systems.

GROUP THEORY ANALYSIS OF MIXED CONVECTION OVER A HORIZONTAL MOVING PLATE

In the present paper, the investigation to the mixed convective boundary layer behavior over a horizontal plate is carried our. By applying transformation group theory, the analysis of the governing equations of continuity, momentum, energy and diffusion shows the existence of similarity solution for the problem provided that the temperature and concentration at the wall are proportional to x(4/(7-5n)) and that the moving speed of the plate is proportional to x((3-n)/(7-5n)), furthermore, a set of similarity equations is obtained. The similarity equations are solved numerically by a fourth-order Runge-Kutta scheme. The numerical results obtained for velocity, temperature and concentration distributions for Pr=0.72 and various values of the parameters Sc, K-1, K-2 and K-3 reveals the influence of these parameters on the flow, and hear and mass transfer behavior.

ON THE EVOLUTION OF LARGE SCALE STRUCTURES IN THREE-DIMENSIONAL MIXING LAYERS

In this paper, several mathematical models for the large scale structures in some special kinds of mixing layers, which might be practically useful for enhancing the mixing, are proposed. First, the linear growth rate of the large scale structures in the mixing layers was calculated. Then, using the much improved weakly non-linear theory, combined with the energy method, the non-linear evolution of large scale structures in two special mixing layer configurations is calculated. One of the mixing lavers has equal magnitudes of the upstream velocity vectors, while the angles between the velocity vectors and the trailing edge were pi /2 - phi and pi /2 + phi, respectively. The other mixing layer was generated by a splitter-plate with a 45-degree-sweep trailing edge.

Thermodynamic properties and mixing thermodynamic parameters of Ba-Al,Mg-Al,Sr-Al and Cu-Al metallic melts

Application of equations of mixing thermodynamic parameters formulated on the basis of the coexistence theory of metallic melts in Ba-Al, Mg-Al, Sr-Al and Cu-Al melts leads to fruitful results that not only the evaluated mass action concentrations agree well with the measured activities, but also the calculated mixing thermodynamic parameters are quite coincident with the experimental values. Moreover, the calculated mass action concentrations strictly obey the mass action law. The evaluated mixing thermodynamic parameters have very fine regularity: the mixing free energy is composed of standard free formation energies of all compounds and chemical potentials of all structural units at equilibrium; the mixing enthalpy consists of standard formation enthalpies of all compounds; the mixing entropy is composed of standard entropies of all compounds and configuration entropies of all structural units at equilibrium. As the equations of mixing thermodynamic parameters formulated are widely applicable to metallic melts involving compound formation, they can be used as the second practical criterion to determine whether thermodynamic models of metallic melts are correctly formulated.

Phase diagrams in mixed spin-3/2 and spin-2 Ising system with two alternative layers within the effective-field theory

The phase diagrams in the mixed spin-3/2 and spin-2 Ising system with two alternative layers on a honeycomb lattice are investigated and discussed by the use of the effective-field theory with correlations. The interaction of the nearest-neighbour spins of each layer is taken to be positive （ferromagnetic interaction） and the interaction of the adjacent spins of the nearest-neighbour layers is considered to be either positive or negative （ferromagnetic or antiferromagnetic interaction）. The temperature dependence of the layer magnetizations of the system is examined to characterize the nature （continuous or discontinuous） of the phase transitions and obtain the phase transition temperatures. The system exhibits both second- and first-order phase transitions besides triple point （TP）, critical end point （E）, multicritical point （A）, isolated critical point （C） and reentrant behaviour depending on the interaction parameters. We have also studied the temperature dependence of the total magnetization to find the compensation points, as well as to determine the type of behaviour, and N-type behaviour in Neel classification nomenclature existing in the system. The phase diagrams are constructed in eight different planes and it is found that the system also presents the compensation phenomena depending on the sign of the bilinear exchange interactions.

考虑时变线阻的多储能SOC稳定均衡控制策略

在直流微电网中,由于线路阻抗大小差异的复杂化,难以保证各储能单元之间达到荷电状态(state-of-charge,SOC)均衡。为此,提出一种考虑时变线阻的SOC均衡改进控制策略。首先,通过线路阻抗和SOC幂指数构造的平衡因子来修正控制系数,提高SOC的辨识度。同时,利用输出电流来约束平衡因子,提高系统的抗扰能力。在SOC均衡之后,SOC平衡因子G变为1,此时依赖线路阻抗信息但不受线路阻抗变化影响,可平稳地保持电流分配。并且结合输出电流构造的电压补偿环节有效地解决了母线电压质量和SOC均衡控制效果之间的矛盾。其次,针对基于SOC均衡的改进控制策略易受恒功率负载影响的问题,利用混合势函数理论进行建模,得到稳定性判据,有利于保障系统的稳定运行。最后,仿真结果表明,所提出的改进下垂控制能够有效地消除线路阻抗的影响,提高电流分配精度,实现SOC均衡,并验证了在各种突发扰动及极端情况下所提控制策略的有效性和正确性。

高速公路混合交通环境下的智能网联汽车换道策略研究

为推动智能网联汽车应用落地,提出高速公路混合交通环境下智能网联汽车换道策略。首先,改进NaSch元胞自动机模型,并采用马尔科夫链算法计算道路通行能力;其次,针对目标车道为专用车道和普通车道分别建立基于车速引导的决策模型和基于博弈论的双矩阵决策模型;最后,采用多目标轨迹优化算法优化换道轨迹。结果表明:目标车道为专用车道和普通车道时,所提出的策略可分别提高换道效率6%、3.38%。

基于纽介堡方程的色纺织物颜色预测

色纺织物由多种色纤维混合织造,其颜色预测过程复杂,基于格拉斯曼色光混合理论和印刷网点的纽介堡方程,建立了便于计算的颜色预测模型。预测过程分2种情况讨论,一种是取决于表面一层色纤维,另一种是取决于最上面2层纤维相互作用。当考虑最上面2层纤维相互叠加时,相互堆叠简化为与同色堆叠或与两色堆叠。根据不同方式各自建立颜色预测模型,选出预测色差最小的模型并对其优化。结果表明:当以色纺织物最上面2层纤维堆叠组成的色元对混色织物颜色预测时,2层纤维组分不同,认为堆叠顺序对该色元颜色值无影响建立的模型预测色差最小,且对该模型中各色元占比面积系数进行一阶线性回归修正后能较好地用于色纺织物表面颜色值的预测。

基于改进等效电路模型的直流微电网大信号稳定性分析

对高阶非线性直流微电网进行简化建模是大信号稳定性分析的有效方法。传统简化模型主要关注LC滤波器和线路阻抗等参数,难以分析换流器控制参数的影响,所建立的判据存在难以准确反映直流微电网稳定域的问题。因此,该文提出直流电压下垂控制换流器的具备完整状态变量集的改进等效电路模型,相比于传统简化模型,能更准确地刻画系统低频响应特性。基于混合势理论推导了直流微电网大信号稳定判据及其稳定域,并结合LaSalle不变集定理得到能量指标,以反映系统稳定性变化趋势。建立的稳定判据可指导控制参数优化,且能拓展到多端直流微电网的大信号稳定性分析。在多场景下仿真验证了所提改进等效电路模型和大信号稳定判据的有效性。

“自动控制原理”课程思政混合式教学探索

为兼顾专业教学与思政教育,探索了“自动控制原理”课程思政的线上线下混合教学模式。明确了专业思政与课程思政之间的关系,吸收马克思主义学院的教师进入教学团队,建立思政案例库,然后将思政教育融入线上、线下各个环节,并改进课程评价方式,形成了一套“自动控制原理”课程思政的线上线下混合教学模式。多年教学实践表明,该教学模式能够取得好的教学效果。

基于统计损伤修正的冻结砂—黏混合土改进Duncan-Chang模型

为描述冻结砂—黏混合土的偏应力—应变关系,进行不同含砂量冻结砂—黏混合土的冻土三轴压缩试验。基于改进的Duncan-Chang模型(D-C模型),引入统计损伤理论,拟合三轴压缩试验结果,分别建立以Mises强度准则和应变发展为微元强度变量的统计损伤修正模型,对比计算结果与试验数据。结果表明:冻结砂—黏混合土偏应力峰值随含砂量的增加而增加,偏应力—应变曲线由应变硬化型逐渐过渡到应变软化型的临界含砂量为50%。当含砂量介于20%~60%时,基于统计损伤理论的修正改进D-C模型能有效拟合应变硬化型曲线和具有轻微应变软化现象的偏应力—应变曲线。当含砂量为90%时,基于应变发展的统计损伤修正模型的偏应力峰值与试验结果相差3%,具有较强适用性。该结果为不同微元强度变量的统计损伤修正模型提供参考。

扶阳健脾汤-滋阴养胃汤顺势给药和逆势给药对健康大鼠生理指标的影响

目的通过顺势和逆势给药大鼠扶阳健脾汤和滋阴养胃汤的研究来进一步验证中医阴阳分药分时服用方剂学理论,以及评价扶阳健脾汤和滋阴养胃汤的亚急性毒性。方法选取无特定病原体级SD大鼠48只,雌雄各半,按性别、体质量(空腹)排序,采用计算机随机法分为顺势饲喂组、逆势饲喂组、阴阳合药饲喂组和对照组,每组12只。对顺势饲喂组大鼠早上给予滋阴养胃汤颗粒制剂溶液,下午给予扶阳健脾汤颗粒制剂溶液灌胃,逆势饲喂组大鼠给药顺序与顺势饲喂组相反;阴阳合药饲喂组大鼠给予扶阳健脾汤和滋阴养胃汤合药颗粒制剂混合溶液灌胃,分早晚两次给药;给予对照组早晚灌胃等量超纯水,四组大鼠均每周给药5 d,共给药7周。分别于饲喂第1天、第10天、第20天、第30天、第45天时观察各级大鼠的皮肤毛发、行为状态、兴奋程度、激怒反应、睡眠状态、大便状态。分别于饲喂后第1周、第3周、第5周、第7周的周一、三、五测定大鼠采食量和体质量,饲喂7周后检测大鼠血液常规和血生化指标,计算脏器系数。结果饲喂第3周、第5周、第7周,顺势饲喂组日均采食量明显低于对照组;饲喂第5周、第7周,逆势饲喂组体质量明显高于对照组;饲喂7周后,顺势饲喂组和逆势饲喂组的心脏脏器系数明显低于对照组,而顺势饲喂组的脾脏脏器系数明显高于对照组;顺势饲喂组单核细胞计数明显低于对照组,顺势饲喂组和阴阳合药饲喂组的甘油三酯明显低于对照组,顺势饲喂组的血清总胆固醇明显低于对照组,顺势饲喂组、逆势饲喂组、阴阳合药饲喂组的空腹血糖明显低于对照组,顺势饲喂组、逆势饲喂组、阴阳合药饲喂组的肌酐明显高于对照组;顺势饲喂组和阴阳合药饲喂组的白蛋白明显高于对照组。结论顺势给药、逆势给药、混合给药可引起大鼠空腹血糖降低,肌酐增高;此外,顺势给药还可引起大鼠心脏脏器系数、单核细胞计数、甘油三酯、总胆固醇降低,脾脏脏器系数、白蛋白增高,表明顺势给药会促进大鼠的气血运行,有利于减少食物的摄入以及促进大鼠代谢体内的碳水化合物和蛋白质的代谢,从而进一步验证了中医阴阳分药分时服用方剂学理论。

混合边界护顶层力学模型及应用

对于直接顶板稳固性较差的矿山,通常需留设护顶层以防止直接顶板的垮塌。为了保证矿山的安全开采,确定合理的护顶层厚度至关重要。针对房柱法开采的采空区顶板进行结构力学解析,将护顶层视作四边中部自由其余部分固支的薄板,即混合边界薄板;利用功的互等法推导出混合边界薄板的挠曲面方程,构建混合边界护顶层力学模型,在此基础上得到护顶层安全厚度的计算公式。将混合边界薄板与四边固支薄板的变形情况进行对比时发现,混合边界薄板的挠度整体大于四边固支薄板挠度,混合边界自由段长度与最大挠度值呈正相关。将理论分析和数值模拟结合应用在某铝土矿No.9采场上,确定了护顶层安全厚度为1 m,验证了力学模型的准确性。

高校思政课混合式教学的困境与对策

混合式教学有利于提升思政课教师的教学能力,增强师生互动,激发教学的动态生成,提升思政课的吸引力和实效性。当前,混合式教学面临以下困境:教师参与思政课混合式教学主动性不强、在线课程建设水平不高、教师的素质和能力偏低、教学质量监控不全面和考评机制不完善等。因此,本文提出如下对策:提升任课教师的专业素质和信息化水平;积极推动“实践课堂”创新;开发优质网络教学资源,加强思政课的吸引力;加强教学质量监控和考评改革。