酚醛树脂对NR硫化胶性能的影响

详细讨论了酚醛树脂／六亚甲基四胺用量对天然橡胶硫化胶物理机械性能及动态力学性能的影响，用电子扫描电镜（ＳＥＭ）研究了硫化胶磨耗表面状态。结果表明，随酚醛树脂用量增加，硫化胶硬度，１００％定伸应力，动态弹性模量增加，而扯断伸长率，撕裂强度及动态力学损耗（ｔａｎδ）下降。当酚醛树脂用量为５份左右时，拉伸强度，３００％定伸应力，耐磨性及耐老化性能最优，ＳＥＭ照片上磨纹最细。     

出租车牌照经营权到期后市场调查与分析研究——以湖南省娄底市城区为例

文章阐述了出租汽车在城市客运中的地位,分析了当出租汽车牌照经营权到期后市场调查与分析的重要性,并以湖南省娄底市为实例,介绍了出租汽车市场调查的内容与方法.     

On Wick product of generalized operators

Fundamental properties of Wick product of generalized operators are investigated. The annihilation and creation algebras are characterized from various points of view. Wick ordering widely used in quantum physics is interpreted as the Wick product of generalized operators.     

认识雷暴

文章介绍了雷电的产生和实质,分析了雷电对人类造成的危害和雷电对人类的用处。     

Design and implementation of DBC based on dynamic AOP

Traditional approach of design by contract, due to mixing the contract code with application code, is difficult for the extensibility and reusability of software system. This paper presents a framework named JADBC for design by contract based on Aspect-Oriented Programming (AOP) to resolve these problems. By providing a new modularized element, aspect, the framework successfully separates the contracts in design by contract, from functional codes. The implementation of this framework is based on dynamic AOP which can have the contract changed at runtime, consequently, enhancing program flexibility. JADBC framework modularizes the contracts in a clear-cut fashion that is easier to design, implement, and maintain. Biography: WEN Jing (1982–), female, Ph.D. candidate, research directions: software engineer, aspect-oriented software development.     

浅谈风积沙路基施工工艺

文章以新疆大黄山至清河高等级公路施工为例,阐述了风积沙路基的施工重点.     

双重编码理论对大学英语教学的启示——谈图示教学法在大学英语综合课课文讲解中的运用

双重编码理论认为人的大脑存在两个认知系统--语言系统和非语言系统.语言系统处理语言所传达的信息,非语言系统处理图形,知觉上的信息.教学材料中的信息如果同时通过言语和视觉两条通道输入大脑,记忆会变得容易而持久.因此,在大学英语综合课课文教学中如果教师引入图示教学法,将视觉与听觉结合起来,学生对所学内容的理解及记忆将会变得更加容易.     

Linear generalized synchronization of chaotic systems with uncertain parameters

A more general form of projective synchronization, so called linear generalized synchronization （LGS） is proposed, which includes the generalized projective synchronization （GPS） and the hybrid projective synchronization （HPS） as its special cases, Based on the adaptive technique and Lyapunov stability theory, a general method for achieving the LGS between two chaotic or hyperehaotic systems with uncertain parameters in any scaling matrix is presented. Some numerical simulations are provided to show the effectiveness and feasibility of the proposed synchronization method.     

Chiglitazar monotherapy with sitagliptin as an active comparator in patients with type 2 diabetes:a randomized,double-blind,phase 3 trial(CMAS)

Chiglitazar(Carfloglitazar)is a novel peroxisome proliferator-activated receptor(PPAR)pan-agonist that has shown promising effects on glycemic control and lipid...