开发区“二次创业”的全球化视角—对长江三角洲开发区“二次创业”的分析

提出了全球化和区域创新的关系问题,并以长江三角洲开发区为窗口,应用历史分析方法分析了两者之间的关系;探讨了“二次创业”的内涵,主要特点和内容;分析了长江三角洲开发区“二次创业”的特点和内容,并对上海开发区的发展提出了一些建议。     

开发区“二次创业”探讨

面对着变化了的国际、国内环境，怎样再造优势、实现“二次创业”，是各级各类开发区必须做出回答的现实课题。开发区“一次创业”本质上是优惠政策驱动型开发。这种开发方式，已经随着国家对开发区支持重点、支持方式的改变而完成了历史使命。开发区的新一轮创业，必须充分利用历史累积优势，发挥资金、人才、市场、信息、技术、体制的整合功能，实现以市场深化为本质特征的“二次创业”     

关注中国高新区聚焦“二次创业”

国家高新技术产业开发区建立以来,得到了超常规的发展,探索出一条具有中国特色的发展高新技术产业的道路。2002年是国家科技部提出国家高新技术产业开发区实施“二次创业”的起始之年,为配合“二次创业”宣传服务,本刊特邀请有关领导、学者就“二次创业”的相关问题进行研讨。     

高新区阶段发展论与"二次创业"的核心能力

国家高新技术产业开发区建立以来,得到了超常规的发展,探索出一条具有中国特色的发展高新技术产业的道路。2002年是国家科技部提出国家高新技术产业开发区实施“二次创业”的起始之年,为配合“二次创业”宣传服务,本刊特邀请有关领导、学者就“二次创业”的相关问题进行研讨。     

推动安徽省高新技术产业开发区二次创业的若干思考

进入21世纪,高新技术发展日新月异,高新技术产业已成为带动区域经济发展的主要力量,作为高新技术产业化基地的高新区建设已进入二次创业阶段.面对国内外竞争日益严峻的发展形势,本文通过对合肥、芜湖、蚌埠3个高新技术产业开发区(以下简称高新区)的调研情况进行分析探讨,提出了安徽省高新区二次创业的对策.     

"二次创业"阶段我国高新区发展水平评价指标体系研究

我国高新区发展进入“二次创业”阶段，本文针对此阶段的特点，在分析了“二次创业”过程中高新区发展水平的主要评价内容的基础上，设计了高新区发展水平的评价指标体系，讨论了评价方法。     

高新区“二次创业”发展战略与政策建议

根据高新区阶段发展理论，我国高新区“二次创业”正处在由产业主导中期阶段向创新突破阶段过渡。高新区“二次创业”过程也是园区实现“五个转变”的过程。首先，园区要从注重招商引资和优惠政策的外延式发展向主要依靠科技创新的内涵式发展转变：其次，园区要从注重硬环境建设向注重优化配置科技资源和提供优质服务的软环境转变；第三，园区要努力实现产品以国内市场为主向大力开拓国际市场转变；第四，园区要推动产业发展规模由小而分散向集中优势发展特色产业和主导产业转变；第五，园区要从逐步、积累式改革向建立适应社会主义市场经济要求和高新技术产业发展规律的新体制、新机制转变。     

江苏高新区"二次创业"的战略研究

首先分析了外部环境给江苏高新区发展带来的机遇和挑战,分析了江苏高新区实现新的发展已有的内部基础,接着在确定了江苏高新区“二次创业”的原则的基础上,提出了江苏高新区“二次创业”的目标,最后讨论了江苏高新区“二次创业”的战略。     

中国民营企业二次创业的制约因素及对策分析

本文以民营企业二次创业的相关问题作为研究对象，重点分析了可以由企业控制的制约民营企业二次创业的内部因素。并结合民营企业的特点。对二次创业提出了一些建议。     

关于进一步加强全省高新技术产业开发区业务管理工作的意见

为加快推进我省高新技术产业开发区（以下称“高新区”）“二次创业”，进一步加强高新区管理工作，推动机制和体制创新，根据《广东省高新技术产业开发区管理办法》（粤府[2002141号）和《关于高新技术产业开发区管理职能问题的通知》（粤机编办[2004]409号）以及相关工作文件精神，特提出加强高新区业务管理工作意见：     

盾构机密封舱渣土非线性本构模型参数识别

根据密封舱改性渣土的三轴压缩实验数据,建立了基于优化方法的Duncan-Chang双曲线本构模型参数反演方法。为了解决参数识别反问题解的不稳定性问题,在Gauss-Newton优化迭代算法的基础上,提出了正则化参数反演方法。实际应用结果表明,所提出的反演方法具有较快的收敛速度和较强的鲁棒性,预测的实验模型变形与实验值吻合较好。     

Electrochemical properties of LiNi<Subscript>0.5</Subscript>Mn<Subscript>1.3</Subscript>Ti<Subscript>0.2</Subscript>O<Subscript>4</Subscript>/Li<Subscript>4</Subscript>Ti<Subscript>5</Subscript>O<Subscript>12</Subscript> cells

Spinel compounds LiNi_0.5Mn_1.3Ti_0.2O₄ (LNMTO) and Li₄Ti₅O₁₂ (LTO) were synthesized by different methods. The particle sizes of LNMTO and LTO are 0.5–2 and 0.5–0.8 μm, respectively. The LNMTO/LTO cell exhibits better electrochemical properties at both a low current rate of 0.2C and a high current rate of 1C. When the specific capacity was determined based on the mass of the LNMTO cathode, the LNMTO/LTO cell delivered 137 mA·h·g⁻¹ at 0.2C and 118.2 mA·h·g⁻¹ at 1C, and the corresponding capacity retentions after 30 cycles are 88.5% and 92.4%, respectively.     

Kinetic parameters of oscillating reaction of amino acid- BrO3^——Mn^2＋-H2SO4-acetone system

In the previous papers[1—3], the oscillating reactionusing amino acids as organic substrates was studied. Inorder to obtain information about the kinetic parameters ofoscillating reaction of amino acids in amino acid- BrO3 - ?Mn2 -H2SO4-acetone sy…     

Preparation of Al<Subscript>72</Subscript>Ni<Subscript>8</Subscript>Ti<Subscript>8</Subscript>Zr<Subscript>6</Subscript>Nb<Subscript>3</Subscript>Y<Subscript>3</Subscript> amorphous powders and bulk materials

Amorphous Al₇₂Ni₈Ti₈Zr₆Nb₃Y₃ powders were successfully fabricated by mechanical alloying. The microstructure, glass-forming ability, and crystallization behavior of amorphous Al₇₂Ni₈Ti₈Zr₆Nb₃Y₃ powders were investigated by X-ray diffraction (XRD), transmission electron microscopy (TEM), and differential scanning calorimetry (DSC). The isothermal crystallization kinetics was analyzed by the Johnson–Mehl–Avrami equation. In the results, the supercooled liquid region of the amorphous alloy is as high as 81 K, as determined by non-isothermal DSC curves. The activation energy for crystallization is as high as 312.6 kJ·mol?1 obtained by Kissinger and Ozawa analyses. The values of Avrami exponent (n) imply that the crystallization is dominated by interface-controlled three-dimensional growth in the early stage and the end stage and by diffusion-controlled two- or three-dimensional growth in the middle stage. In addition, the amorphous Al₇₂Ni₈Ti₈Zr₆Nb₃Y₃ powders were sintered under 2 GPa at temperatures of 673 K and 723 K. The results show that the Vickers hardness of the compacted powders is as high as Hv 1215.     

Acid etching process for fabrication of Bi2Sr2CaCu2O8＋x stack

We adopted a new method, acid etching process, to fabricate the intrinsic Josephson junctions based on the Bi2Sr2CaCu2O8 x single crystals. By soaking the crystals into the dilute hydrochloric acid, we fabricated a junction stack successfully, and meantime made the surrounding area insulated. A certain concentration of hydrochloric acid was used to maintain the roughness of the modified layer. The cur-rent-voltage characteristic was achieved through the four terminal measurement. We could control the junctions' number by changing the concentration and the soaking time. We also found that the thick-ness of the stack was equal to the average height of the insulation layer. Such a simple, convenient and controllable fabrication method with a high yield might widen the applications of the intrinsic Joseph-son junctions.     

Investigation on high magnetoresistance Ni0.81Fe0.19 films grown on （Ni0.81Fe0.19）1-xCrx underlayers

We have fabricated Ni0.18Fe0.19 films with (Ni0.18Fe0.19)1-xCrx films as underlayers by dc magnetron sputtering, the results show that larger anisotropic magnetoresistance (△R/R) values of Ni0.18Fe0.19 films are observed using the underlayers with Cr concentration of -36 at.% at an optimum underlayer thickness of -4.4 nm, the maximum AMR value is 3.35%. The results of atomic force microscope (AFM) and X-ray diffraction (XRD) show that the △R/R enhancement is attributed to the formation of large average grain size and the strong(111)texture in the Ni0.18Fe0.19 films.     

基于遗传算法的带附加气室空气悬架多目标优化

以带附加气室的空气弹簧悬架为研究对象,按照物理模型建立带附加气室空气弹簧的数学模型,考虑到空气弹簧刚度的非线性,将该模型以空气弹簧非线性力的形式直接引入到1/4车辆模型。以提高车辆平顺性、行驶安全性及操纵稳定性的综合性能为目标,以附加气室容积为优化变量,设计带附加气室空气悬架的多目标优化模型;考虑到悬架性能各指标量在量纲与量级上的差异,对各指标量进行统一化处理,并采用线性加权和法将多目标函数转化为单目标评价函数。在MAT-LAB/Simulink中搭建系统仿真模型,采用遗传优化算法对典型工况下的最优附加气室容积进行寻优。优化结果表明,优化附加气室容积能有效提高悬架的综合性能,降低车身加速度、悬架动行程,但轮胎动载荷有所增加。     

Rolling-induced microstructure change in Zr_（65）Al_（7.5）Ni_（10）Cu_（12.5）Ag_5 bulk metallic glass

The microstructures and free-volume evolutions of as-cast and pre-annealed Zr65Al7.5Ni10Cu12.5Ag5 bulk metallic glasses during rolling deformation have been investigated. No phase transformation is detected in the as-cast/rolled specimen. However,the structural stability of the glass against plastic deformation is worse after pre-annealing,indicated by nanocrystallization in preannealed/rolled specimens with large deformation degrees. Moreover,with increasing deformation degree,the free-volume content in a pre-annealed/rolled specimen increases at a lower average rate than that in an as-cast/rolled specimen.     

Synthesis, Characterization and Calorimetry of Ni（C4H8N2O3）2Cl2

A coordination complex was synthesized from NiCl2 and dipeptide glycylglycine（GG）. It was characterized by element analysis, NMR and TG methods, and then was determined to be Ni（C4HsN2O3）2Cl2. Using an isoperibolic reaction calorimeter, the standard molar enthalpy of formation of Ni（GG）2Cl2（solid） has been determined to be -（1 674.66±2.02） kJ · mol^-1 at 298.15 K.     

Work toughening effect in Zr_（41）Ti_（14）Cu_（12.5）Ni_（10）Be_（22.5） bulk metallic glass

Work hardening is a well-known phenomenon occurring in crystalline metals during deformation,which has been widely used to increase the strength of metals although their ductility is usually reduced simultaneously. Here we report that the plastic strain of Zr41Ti14Cu12.5Ni10Be22.5 (at.%) bulk metallic glasses has been increased from 0.3% for the as-cast sample to 2.5%-8.0% for samples that have experienced pre-deformation under constrained conditions. The pre-deformed glassy alloys possess more free volume and abundant introduced shear bands,which are believed to promote the activation of shear bands in post-deformation and result in an increase in plasticity. The orientation of the pre-introduced shear bands relative to the loading direction will affect the deformation behavior of pre-deformed samples. The present results show that pre-deformation of this glassy alloy will result in work toughening. This work toughening effect can be removed by isothermal annealing at a sub-Tg (glass transition) temperature,which causes annihilation of free volume and healing of shear bands.