当前工程造价改革之我见

对工程造价的含义作了明确的定义，分析了工程造价的特点，提出了关于当前工程造价改革的几点建议。     

Lacunary Measures and Self-similar Probability Measures in Function Spaces

The paper deals with multifractal quantities for some types of Radon measures,especiallyself-similar probability measures,and their relations to Besov spaces.     

关于物理量极值的探讨

探讨物理量的极值,分析了几个物理量的极值和物理常数的联系。     

Symmetries of Itô and Stratonovich Dynamical Systems and Their Conserved Quantities

A new definition for the symmetries of Itô and Stratonovich dynamicalsystem is given. Determining systems of symmetries for Itô andStratonovich systems have been obtained, and their relation has beendiscussed. It has been shown that some of the Lie point symmetries ofthe Fokker–Planck equation can be constructed using the symmetries ofItô dynamical systems. Conserved quantities can be found from thesymmetries of stochastic dynamical systems which do not arise from aHamiltonian. The results have been applied to an example.     

Lie Symmetry and Conserved Quantities for Nonholonomic Vacco Dynamical Systems

In this paper the Lie symmetry and conserved quantities for nonholonomic Vacco dynamical systems are studied. The determining equation of the Lie symmetry for the system is given. The general Hojman conserved quantity and the Lutzky conserved quantity deduced from the symmetry are obtained.     

中心—焦点区分问题的I l'yashenko算法

对二维平面系统的二维系统的中心焦点区分问题 ,I l'yashenko曾建议一个算法 ,本文给出此法的详细证明 .据此 ,我们讨论了区分问题在 Arnold意义下的代数可解性与不可解性     

新疆产12种中草药中微量金属元素的测定

本文测定了新疆产新疆党参,新疆元胡等１２种中草药中十种微量金属元素的含量．结果表明这些中草药中具有显著生理活性的Ｚｎ、Ｆｅ、Ｃｕ、Ｍｎ等元素．它们的含量除了个别样品外均大于或接近于国内其它地区所产的同种中草药、根据冠心病病因的Ｚｎ／Ｃｕ值假说和微量金属元素的含量关系,新疆产１２种中草药也可用于防治冠心病．     

赤道东太平洋海表水温变化的多层次结构特征分析

以小波理论为基础来进行赤道东太平洋海表水湿变化的多层次结构特征分析,结果表明,赤道东太平洋海表水温的变化表现十分明显的多层次演变结构和突变特征,一级保留信息能较好反映从１９１年以来的历次厄尔尼诺事件和反厄尔尼诺事件,并对这些事件的强度,层次结构和突变等重要信息给予良好的表现,二,三级保留信息则分别反映了赤道东太平洋海温在另一层次里演变的结构特征,是对一级保留信息的增加和完善。     

Conductivity Studies of <Emphasis Type="Italic">n</Emphasis>-Tetrabutylammonium Tetraphenylborate in 3-Pentanone in the Temperature Range from 283.15 to 329.15 K

The molar conductivities (Λ) of solutions of n-tetrabutylammonium tetraphenylborate (NBu₄BPh₄) in 3-pentanone have been measured in the temperature range from 283.15 to 329.15 K. The conductance data have been analyzed using the Lee-Wheaton conductivity equation with the distance parameter (a) set at Bjerrum’s pairing distance, and the limiting molar conductivities (Λ_o) and the association equilibrium constants (K _A) have been derived. The limiting ion conductivities (λ_±^o) have been evaluated according to the method of Krumgalz. The λ₊ ^o values have been compared with λ₊ ^o values calculated from the empirical equation of Gill. The thermodynamic functions, Gibbs energy (Δ G _A ^o), enthalpy (Δ H _A ^o) and entropy (Δ S _A ^o) for the process of ion-pair formation as well as the activation energy of the ionic movement (ΔH ^∗) have been evaluated. The obtained results are discussed in terms of ion-ion and ion-solvent interactions.     

招标工程按工程量清单报价的探索与研究

探讨了招标工程按工程量清单报价的涵义及原因。提出了推动工程量清单报价有效实施的若干措施，指出工程量清单招标方法将有着广阔的市场环境。