管理层收购的理论依据及对我国实践的效应分析

管理层收购起源于资本市场相对成熟的英美国家,其理论基础是西方经济学家提出的效率提高论,代表理论有代理成本说、防御剥夺说、信息不对称性假说。文章分析了管理层收购对我国企业的正负影响,由此提出今后我国管理层收购的几点思路。     

旅游行业管理信息集成平台研究

旅游业作为直接面对消费者的行业，近年得到了迅猛的发展，旅游业的规范管理是旅游业发展的基本保证，而规范管理则需要以信息渠道畅通与共享为前提，分析了旅游行业信息化建设的现状，从旅游行业管理的角度，提出了基于计算机集成技术的旅游行业管理信息集成平台的架构，并分析了旅游行业管理信息集成平台的功能和应用关键技术。     

足球教学训练中的技术与战术关系

足球技术和战术在足球课教学中具有突出的重要地位。技术是足球训练的基础与核心，是完成战术配合及决定战术行动效能的前提和保证。它们是教学训练和竞赛中必不可少的两个重要因素。     

Low-temperature synthesis of nanocrystalline ZnGa2O4:Tb phosphors via the Pechini method

The synthesis of trivalent terbium doped ZnGa₂O₄ nanosized new phosphors by the Pechini method was reported. Well-crystallized ZnGa₂O₄:Tb³⁺ phosphors were obtained at low-temperature about 550 °C. The phosphors formed porous agglomerates which consist of spherical nanocrystallites with a uniform size at about 30 nm. The photoluminescence of the phosphors included both the luminescence of ZnGa₂O₄ host and characteristic emission of Tb³⁺, and the excitation spectra showed an energy transfer from the host lattice to the activator. The Tb³⁺ emission from the phosphors prepared by the Pechini process was more intensive than that of phosphors by solid-state reaction process.     

基于UA302H数采器的虚拟测试系统设计

本文针对计算机辅助测试问题,阐述了集成测试和虚拟仪器的巨大优势,重点介绍了一套以UA302H数据采集器为A/D转换装置的虚拟测试系统的设计与应用情况,为普通用户自行开发虚拟测试系统提供了思路.     

Effect of Ion Dose on Growth of Relaxed SiGe Layer on Ion Implantation Si Substrate

Thin strain-relaxed Si0.8Ge0.2 films (57.6 nm) on the 30 keV Ar ion implantation Si substrates for different dose (1 × 1014, 5 × 1014, 3 × 1015 cm-2) were grown by ultra high vacuum chemical vapor deposition (UHVCVD) system.Rutherford backscattering/ion channeling (RBS/C), high resolution X-ray diffraction (HRXRD), Raman spectra as well as atomic force microscopy (AFM) were used to characterize these SiGe films. Investigations by RBS/C as well as HRXRD demonstrate that these thin Sio.8Geo.2 films could indeed epitaxially grow on the Ar ion implantation Si substrates. Under low dose ( 1 × 1014 cm-2) and medium dose (5 × 1014 cm-2) implantation conditions, the relaxation extents of SiGe films are 60.6% and 63.6%, respectively. However, high dose implantation (3 × 1015 cm-2) prompt the strain in epitaxial SiGe film to be close to full relaxation status (relaxation extent of 96.6% ). On the other hand, determinations of RBS/C also indicate the crystalline quality of SiGe film grown on high dose implantation Si substrate is nearly identical to that grown on low dose (1 × 1014 cm-2) implantation Si substrate.     

功率分流式封闭行星减速器的设计研究

本文较详细地讨论了功率分流式封闭行星齿轮减速器的设计计算，文中阐述了该封闭传动的特点， 比计算，受力分析和效率计算，同时还研究报其封闭功率和功率分流等问题，因此，本文对于同类型的封闭行星减速器的设计工作具有较重要的指导意义。     

基于多维空间的商务协同要素分析

运用四维空间分析方法,引入时间压缩策略、战略成本管理、标杆管理和协同效应等原理,将网络协同商务链置于时间维、经济成本维、性能维和可持续发展维等多维空间中进行多元素分析和运筹。指出企业间资源、信息与业务的协同能力依赖于时间、成本、性能以及持续竞争优势等多个约束因素的协调。     

CIMS/CIPS中的现场总线

本文主要涉及现场总线定义，现场总线的特点，发展现场总线的必要性，现场总线的发展历程，现场总线的标准化及现场总线产品的开发等内容     

Development and Verification of the Equilibrium Strategy for Batteries in Electric Vehicles

The inconsistency of the cells in a battery pack can affect its lifespan,safety and reliability in the electric vehicles.The balanced system is an effective technique to reduce its inconsistency and improve the operating performance.A hybrid equilibrium strategy based on decision combing battery state-of-charge (SOC) and voltage has been proposed.The battery SOC is estimated through an improved least squares method.An equalization hardware in loop (HIL) platform has been constructed.Based on this HIL platform,equilibrium strategy has been verified under the constant-current-constant-voltage (CCCV) and dynamic-stress-test (DST) conditions.Experimental results indicate that the proposed hybrid equalization strategy can achieve good balance effect and avoid the overcharge and over-discharge of the battery pack at the same time.