性质的

It mainly studies the choice of mode for competitive tender offer under different bidders' type.

首先，借鉴Perry，Wolfstetter和Zamir（2000）的有关理论，从基于两阶段密封价格投标的竞争性要约收购过程开始，讨论了其中的一些性质，结果表明，同质收购者前提下该过程不但能够获得和基于英式竞价的竞争性要约收购过程相同的期望收益，还能够克服后者存在的一些问题；随后，在异质收购者内生参与条件下就基于英式竞价和密封投标的竞争性要约收购过程进行了比较研究，得到了不同方式下收购结果的特征；最后，针对异质收购者不同知情程度的情况研究了竞争性要约收购方式的选择问题，借鉴Povel和Singh（2004）提出的机制，得到了具备"胡萝卜加大棒"性质的序贯出售过程是这种情况下控股股东的最优选择。

This text is exactly the route that attempts to explain the system changes of family firm in terms of theory of the modern agreement, utilize a series of mathematics models to strengthen the convincingness of the theory, thus achieve the goal of analyzing. After analyzing the agreement nature of the family firm. Drove through theory identification and mathematics and physics

在分析了家族企业的契约性质后，重点通过理论证明以及数理模型说明家族企业作为一个不完全契约需要建立一种有外部人力资本参与的新的企业契约，更进一步的分析引入外部人力资本后家族企业契约性质的变化及由此导致的家族企业发展的新困境，并提出建立一般性关系型激励契约以及报酬契约是克服家族企业发展障碍的现实有效选择。

This thesis has construed the functions of sights in the programming process of historical cities and its trend of development in the future through the analysis of the various changes in the evolutional process of the cities: the transformation from the unconscious sight construction to the intentional planning which embodies the character of the ruling class, the transformation from the demolishment and renewal of the sights during dynastic changes to the maintenance of its old features, and the transformation from the radial pattern to the reasonable division of regions.

全文通过从城市的演变过程中伴随的无意识的景观建设到有意识的体现统治阶级性质的布局设计；从改朝换代中的毁坏又更新到当今为了保持原有风貌及体现历史名城的特色所作的维护工作；从集中一点放射状规划城市布局到合理划分不同性质区域的各种变化来分析景观在历史名城规划进程中的作用及未来的发展趋势。

The first part presents develops of predator-prey systems and gives the model that is investigated in our paper; Chapter 2 presents the results on boundedness of solutions and permanence of system; In chapter 3, we explicitly derive a domain of attraction for the positive equilibrium of system by using Liapunov method; The local stability and the conditions that Hopf bifurcation occurs are obtained in chapter 4; In chapter 5, some explicit fomulae of the direction of Hopf bifurcation and the stability of bifurcating periodic solutions on the center manifold are determined,using normal form and center manifold introduced by Hassard et al; In chapter 6, some numerical simulations are performed to illustrate the analytical results found; Our paper ends with a brief conclusion.

全文共分七章，第1章对捕食-食饵系统的发展背景做了介绍并给出了本文研究的模型；第2章讨论了系统的保持性和解的有界性；第3章研究正平衡点的全局性质，对正平衡点的吸引域进行了精确估计；第4章研究了系统的正平衡点的局部稳定性和Hopf分支存在的条件；第5章利用规范型和中心流形定理得到了一个决定Hopf分支方向、分支周期解的稳定性及其他性质的精确公式；第6章对一个具体模型进行了数值模拟；第7章对全文进行了总结。

Then, on the basis of above achieved constituent binary results, thermodynamic properties of 10 ternary liquid alioys (Cd-Bi-Pb, Cd-Pb-Sb, Cd-Pb-Sn, Mg-In-Cd, Zn-In- Cd, Cd-Bi-Sn, In-Bi-Pb, Sn-AgPb,Zn-In.Pb, Al-Cu-Zn), 3 quaternary ones (Cd-Bi-Pb-Sn, Zn-Sn-Cd-Bi, Zn-Sn-Cd-Pb) and 1 quinary. one (Zn-Sn-Pb-Cd-Bi) are predicted. For most of investigated multicomponent systems, the calculated activities are in good with the experimental ones, and in particular for multicompoment immiscible ones, the predicted results are satisfactory and exciting. At the same time, the comparison result between the three equations shows that Wilson equation and T-K-Wilson one are more stable than NRTL one, that maybe is because NRTL equation contains a third parameter, and so ,to some degree, Wilson model and T-K-Wilson model are superior to NRTL model. And also the comparison between local composition models and other models such as Pelton- Flengas?method, Krupkowski formalism, mass action concentration model and Hoch- Arpshofen model shows that local composition models are more convenient and credible.

在此基础之上应用局部组成型模型对10个三元液态合金（包括Cd-Bi-Pb、Cd-Pb-Sb、Cd-Pb-Sn、Mg-In-Cd、Zn-In-Cd、Cd-Bi-Sn、In-Bi-Pb、Sn-Ag-Pb、Zn-In-Pb、Al-Cu-Zn），3个四元液态合金（包括Cd-Bi-Pb-Sn、Zn-Sn-Cd-Bi、Zn-Sn-Cd-Pb）和1个五元液态合金（Zn-Sn-Pb-Cd-Bi）的活度进行了预测，预测效果良好，尤其对Zn-In-Pb系和Zn-Sn-Cd-Pb等多元液-液共存体系热力学性质的预测也取得了令人满意的结果；同时对三个方程的比较分析表明：Wilson方程和T-K-Wilson方程在多元系热力学性质的预测中表现稳定，而NRTL方程由于引入了物理意义不清楚的第三参数，使得其具有不确定性和不稳定性的特点，因此Wilson方程和T-K-Wilson方程较NRTL方程更为优越；此外对局部组成型模型与其它模型（如Pelton-Flengas方程、Krupkowski方程、作用浓度模型和Hoch-Arpshofen模型）的比较表明：局部组成型模型同样是优秀的，甚至在某些方面更为简便和可靠。

From these researches as above, this paper found a new method to analysis salty soil road engineering properties by phase equilibrium theory, which provides a new angle of analysis on salty soil properties, experiment and engineering practice in these ways as follows:(1) Analysis the disadvantage of traditional salty soil experiment;(2) Analysis the disadvantage of current salty soil definition by phase equilibrium theory, and gives the chart of distinguish salty soil by the condition of hydrography and climate change;(3) Analysis the mechanics of subgrade frost boiling based on the change rule of liquid content;(4) Based on the change rule of ingredients content and volume in salty soil, analysis the mechanics of subgrade salt heaving and the restraining method by adding sodium chloride.

通过以上研究，本文初步建立了以相平衡理论为核心的盐渍土路用工程性质分析方法，该方法对盐渍土工程性质的理论分析、试验研究以及工程实践提供了新的研究思路与方法，具体体现在：(1)分析了传统的盐渍土试验存在的缺陷；(2)分析了现行盐渍土定义的不足，并以相平衡理论为基础，结合水文、气候条件的变化给出了判别盐渍土的诺谟图；(3)分析了盐渍土盐溶液含量的变化规律，并从盐渍土含液量变化规律出发，分析了盐渍土路基较非盐渍土路基翻浆严重的机理；(4)分析了盐渍土各固相含量及其体积的相变规律，并在此基础上分析盐渍土路基的盐胀机理，以及采用添加氯化钠来抑止硫酸盐盐渍土的盐胀机理

The influence of high temperature and high pressure on foaming agent's properties in opened and closed system, and influence of the change of foaming agent's properties on foaming capacity and foam stabilizing capacity are also studied. The multiple regression theory is used to establish the quantitative characteristic functions of foaming agent versus temperature and pressure. Based on the Gibbs Principle, the quantitative characterization is carried out on relation of foam system's free energy versus its surface tension, surface area and concentration, and the analysis of energy concluded that the disintegration of the foam is inconvertible. At the same time, the influence of change of foam's shape and structure on distribution of reservoir temperature and pressure is qualitatively described, and the coupling mechanism between temperature field, pressure field and chemical field is systematically expounded.

同时，研究了不封闭体系、封闭体系下高温、高压对发泡剂性质的影响，以及发泡剂性质的改变对其发泡性能、稳泡性能的影响；采用泡沫实验的相关结果，运用多元回归理论，建立温度、压力与发泡剂浓度的定量表征函数；基于Gibbs原理，对高温、高压下泡沫体系的自由能与其表面张力、体系中液体的表面积以及浓度关系进行定量化的表征研究，从能量的角度得出了泡沫衰变过程具有不可逆性；同时定性地描述了泡沫形态、结构的变化对油藏温度和压力分布的影响，系统地阐述了温度场、压力场、化学场间的耦合作用机理。

However,the removal of soil noncrystalline aluminum with DCB soultioncaused an obvious decrease of soil SSA.3.The hydroxy aluminum in the interlayer of 1.4nm intergrade mineralhad an important negative effect on the cation exchange capacity ofsoil colloids.Its removal would cause a significant increase in CEC valuesof the soil colloids.4.Free aluminum was the major carrier of phosphate adsorption of soilcolloids.Particularly,the active aluminum had a decisive effect on thecapacity of phosphate adsorption of soil colliods.5.Addition to the effects of other soil constituents on soil surfaceproperties,it was thought that the effect of soil free aluminum,especially active aluminum on soil surface properties,deserved closeattention.

焦磷酸钠、草酸铵、DCB、柠檬酸钠和NaOH提取的土壤铝对提高土壤CECv、AEC、PZC和PZNC起重要作用，尤以活性铝的作用较大。2）用草酸铵处理除去铝后，土壤比表面积变化不大或略有增加；用DCB处理除去土壤铝后，土壤SSA明显降低。3）层间羟基铝对土壤胶体的阳离子交换量有显著负贡献，用柠檬酸钠将之除去后，土壤胶体的阳离子交换量明显增加。4）土壤胶体中的游离铝是土壤胶体吸附磷的主要载体，尤其是其中的活性铝，对土壤胶体的磷吸附能力起决定性作用。5）除其它土壤组分对土壤表面性质的影响外，土壤中的游离铝、尤其是活性铝对土壤有关表面性质的影响，值得引起特别的重视。

The effect of interspace diffuse resistance for chitosanase's kinetic property is found larger than that of carrier's electrical property.

酶经固定化后所产生的空间扩散阻力对壳聚糖酶的动力学性质的影响要比在固定化过程中所用载体所带的电荷的极性对酶的动力学性质的影响大的多。

Content abstract: The article from the job category, the investment originated, the operational mechanism three aspects to differentiate and to limit the public welfare and the commercial character two kind of heterogeneity geological work; Has analyzed the geology surveying work reform background, has been clear about the reform guiding principle; Has analyzed under the traditional system the geology surveying work existence malpractice, reviewed the former reform measure; Based on this, the major issue three aspects which from the organization, the operational mechanism and must solve establishes the land resources big investigation the new system, the new mechanism; Finally, the author believed that what the deepened commercial character geology work reform is most essential cultivates the geological minerals Investment company, namely, on the one hand expanded geology investigation investment origin, on the other hand the cultivation geology investigation's subject of investment, and must strive for stock going on the market positively, widely uses the social fund, the reform commercial character geology work operational mechanism.

内容摘要：文章从工作性质、投资来源、运行机制三个方面区分和界定了公益性和商业性两类不同性质的地质工作；分析了地质勘查工作改革的背景，明确了改革的指导思想；分析了传统体制下地质勘查工作存在的弊端，回顾了以往的改革措施；在此基础上，从机构、运行机制和必须解决的重大问题三个方面建立国土资源大调查的新体制、新机制；最后，作者认为，深化商业性地质工作改革最关键的是培育地质矿产投资公司，即，一方面扩大地质勘查的投资来源，另一方面培育地质勘查的投资主体，并要积极争取股份上市，广泛利用社会资金，改革商业性地质工作的运行机制。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。