基于现代职教体系视角下企业办高职院校改革策略研究

在加快发展现代职业教育的进程中,企业办高职院校要把握发展方向,分析存在问题,以改革的思路和策略同步融入适应社会发展需求、校企紧密合作、产教深度融合、中高职衔接、职普沟通,体现终身教育理念,具有中国特色、世界水平的现代职业教育体系。     

基于混合蚁群遗传算法的冲压生产调度研究

针对实际冲压生产中缓冲区与机器冲突的问题,根据冲压生产调度的特点,以最小生产成本为目标,提出一种新的调度方法。建立考虑工序约束、资源约束和机器占用约束的数学模型,利用混合蚁群遗传算法对其求解,并将等待时间作为启发因子,从而提高选择概率。仿真结果表明,该方法是正确有效的。     

三网融合时代职业教育物联网技术融入探索

随着电信网、广播电视网和计算机通信网的相互渗透、互相兼容,及逐步整合,智能物流、智能交通、智能家居等物联网应用已率先进入人们的生活中,这一变化带动了物联网相关职业岗位专门人才的大量需求。从微电子、软件、信息技术方面,探讨了物联网技术在高职教育中适度融入的问题,以满足区域经济发展对人才的需求。     

高职院图书馆对大学生人文素质的培养功能刍议

随着科技的发展和技术的进步，科学文化素质得到了空前的重视，人文素质教育正在逐渐被忽视，职业技术教育的目的就是要造就全面发展的高素质人才，职业学校的图书馆应当充分利用自身的优势，发挥其人文素质教育功能。     

占道施工影响下区域路网容量计算与关键路段识别方法

为研究占道施工事件对区域路网络容量的影响,基于双层规划理论,构建了考虑路段通行能力约束的区域路网络容量计算模型,并设计了求解算法。通过VISSIM仿真软件,确定了施工区段通行能力基准值,对实际通行能力与各影响因素之间的定量关系进行分析,给出了占道施工条件下实际通行能力计算方法。结合交通流分配结果、边介值、蓄意破坏前后路网效率变化率给出了占道施工期区域关键路段识别方法。最后以哈尔滨市阿城区的路网为案例,通过手机信令数据获取得到出行需求分布,计算占道施工前后的路网容量,并对占道施工期阿城区路网进行了重要度排序。研究表明:初始条件下区域路网络容量为38 445 pcu/h,施工时为36 865 pcu/h,路网络容量值减少了4.1%。     

A3Y2Ge3O12 (A = Ca,Mg): Two novel microwave dielectric ceramics with contrasting τf and Q × f

Two garnet-structured microwave dielectric ceramics of A₃Y₂Ge₃O₁₂ (A = Ca, Mg; called CYG and MYG, respectively) were synthesized. CYG was crystallized in a normal cubic garnet structure with Ca²⁺ fully occupying the dodecahedral (A) site, whereas MYG was an inverse garnet with mixed distribution of Mg²⁺/Y³⁺ at the A site. The difference in ionic occupation resulted in anomalies in microwave dielectric properties, with dielectric constant (ε_r) = 14.1, quality factor (Q × f) = 12,600 GHz and positive temperature coefficient of resonant frequency (τ_f) =120.5 ppm/°C for MYG ceramic and ε_r = 10.8, Q × f = 97,126 GHz and τ_f = −40.6 ppm/°C for CYG ceramic. The large deviations in measured ε_r from theoretical ε_th possibly resulted from the garnet structural constraints leading to ‘rattling’ Mg²⁺ and Y³⁺ in A site of MYG. Infrared reflectivity spectra analysis revealed ion polarization contributed mostly to the permittivity of both ceramics in microwave frequency ranges.     

电子泊车系统在道路中使用的探讨

近年来城市交通快速发展 ,停车难问题成为城市发展的一个共性问题 .电子泊车在我国应用具有重要的意义 .介绍了电子泊车系统在城市道路使用中存在的问题 ,及投资与使用、开发与建设间的关系和解决方法     

The luminescence and structural characteristics of Eu-doped NaBaPO4 phosphor

Eu³⁺-doped NaBaPO₄ was prepared by a high-temperature solid-state reaction. The phase formation was confirmed by X-ray powder diffraction measurements. The laser site-selective excitation and emission spectra have been investigated in the ⁵D₀ → ⁷F₀ region by using a pulsed, tunable and narrowband dye laser. The excitation spectra corresponding to the ⁷F₀ → ⁵D₀ transition consist of two transitions at 579.6 nm Eu(I) and 578.9 nm Eu(II), indicating the Eu³⁺ ions occupy two crystallographic sites of Ba²⁺ ions. The decay lifetimes of the two Eu³⁺ sites were measured. Two crystallographic sites for Eu³⁺ ions doped in NaBaPO₄ lattice were assigned from the luminescence characteristic and structure features. Meanwhile, the charge compensation mechanism of Eu³⁺ doping in NaBaPO₄ was discussed.     

大型氮肥厂总平面布置的若干问题

结合大型氮肥厂工程设计实践,阐述了在工厂总平面布置时应注意解决的安全防护、节约能源,减少占地和环境保护等问题的方法和措施。     

Calculation of the long-range order parameter from atom probe data

In addition to the known diffraction techniques, field-ion microscopy with atom probe is well established for determining the long-range order parameter. The site occupation probabilities of the chemical species on the different sublattices may be estimated from experimental profiles. However, this evaluation method demands that the superstructure planes be identified unequivocally from the data. This condition is not fulfilled in all cases. We propose a new analytical method for which this condition need not be met.