Abstract:通过考虑替代品的影响,建立了对称性高技术企业协作R&D网络的三阶段博弈模型,同时在以企业利润最大化和社会福利最大化为标杆基础上,分析了同质品和异质品市场上对称性高技术企业协作R&D网络的优化条件.分析结果表明,一方面,R&D投入效益与协作联结数目在同质品与异质品市场上分别负相关与正相关;另一方面,不同的市场竞争性质导致不同的网络优化条件,同质品与异质品市场上的优化条件分别是形成中等水平协作与完全协作.

Abstract:Simulation of human motion indoors was carried out by using the computational fluid dynamic(CFD) technique with the integration of the dynamic mesh model and the rigid kinematics.The velocity distributions were obtained during the moving process.Meanwhile

Abstract:Based on a long-span prestressed concrete cable-stayed bridge of a 370m central span length under construction in China,This paper introduces firstorder solution and optimization algorithm to determine the rational construction state.Applying a spatial no

Abstract:采用纳米二氧化硅、纳米碳酸钙和有机蒙脱土3种纳米材料对环氧树脂结构胶进行改性,改性后环氧树脂结构胶的粘接强度得到显著提高.实验表明:含5%纳米二氧化硅、20%纳米碳酸钙和10%蒙脱土时,环氧树脂结构胶的钢钢抗剪强度比基体分别提高了23.2%,39.3%和63.0%.纳米二氧化硅和纳米碳酸钙的组合产生叠合效应使结构胶的钢钢抗剪强度在25℃下固化达29.3 MPa.XRD衍射实验表明,有机蒙脱土和环氧树脂能进行插层复合,其晶面间距从2.4 nm撑开至8.8 nm以上.SEM实验表明3种纳米材料在基体中能诱发大量银纹,是结构胶粘接强度得到提高的主要原因.

Abstract:Rockburst is a kind of geological catastrophe,which occurs in the underground rock engineering of high in-situ rock stresses areas.The relationship between the rockburst and its influence factors was treated as the grey system.The rockburst prediction met

Abstract:By means of the method of combining theoretic analysis with mathematic calculation,the mathematic model of medium mill's electromechanical twist vibration was established,the whole response of the system in transition process was obtained by the solution

Abstract:The standard applied modes of geometric flatness in new GPS(geometrical product specification),including the duality principle and common operation technology in new GPS system,and the expression,algorithm,data processing issues of the theoretical,specifi

Abstract:In order to describe the actual working processes of Dielectric Barrier Discharge(DBD) circuit,an analysis model of differential-difference equations was presented,based on the working modes of full bridge serial load resonant DBD circuit,which was adopte

Abstract:An algorithm of neural network with orthogonal basis functions based on recursion least square(RLS) was presented and used to analyze the harmonics of power system.The main idea was to use RLS algorithm to train the weights of neural network according to

Abstract:According to the characteristics of price series,this paper firstly set up the general ADL model according to the theory of dynamic econometrics,and obtained the ARMA short-term electricity price estimation model via the outcome of test statistics.Then we

Abstract:采用先驱体浸渍裂解(PIP)法,在碳纤维表面制备了SiC涂层.研究了涂层制备工艺对编织体抗氧化性能的影响.结果表明,经质量分数为10%的聚碳硅烷(PCS)溶液循环浸渍裂解所得样品的抗氧化性能最佳,950℃保温30 min,该样品仍有30%的剩余,较原始碳纤维的完全失重温度提高了300℃.对SiC/碳纤维等温条件下氧化反应的动力学研究表明,材料的等温氧化反应在低温阶段(450~550℃)为扩散和反应共同控制,在高温阶段(550~700℃)为反应控制.基体材料的非等温氧化过程呈现自催化特征.

Abstract:以粘土和生石灰为主要材料,制备出陶砂材料后,在其上用溶胶-凝胶法涂敷了一层TiO2薄膜,制备成TiO2陶砂光催化材料,将其应用于降解水中有机污染物.结果表明,在热处理温度为350℃条件下,制备的TiO2光催化剂水处理效果较好,可使水中有机物的TOC值降低80%以上.

Abstract:用二正丁基氧化锡和取代芳香单羧酸以1∶2摩尔比反应,合成了10个芳香型二正丁基锡双羧酸酯n-Bu2Sn(OOCAr)2(3a~3j).利用1H NMR,119Sn NMR和IR等对这些化合物进行了表征.并用X-射线单晶衍射测定了其中化合物3b和3e的晶体结构.3b和3e晶体中锡原子配位数均为6,形成了严重扭的曲八面体几何构型.3b和3e均存在分子内及分子间氢键作用,3b中氢键作用较弱,在生物体系中比3e更易释放出游离态R2Sn2 ,易与癌细胞的DNA结合,具有更好的抗癌生物活性.

Abstract:将交替拟合残差算法与HPLC-DAD(高效液相色谱-二极管阵列检测)相结合,用于复合麻醉剂中盐酸普鲁卡因和盐酸利多卡因的同时直接快速测定,两组样本中盐酸利多卡因的回收率范围分别为96.2%~101.6%和100.3%~102.3%,盐酸普鲁卡因的回收率范围分别为93.7%~110.4%和97.3%~107.9%.研究表明,交替拟合残差算法可以很好地解决HPLC中色谱和光谱的重叠问题.

Abstract:The rheological properties of polydimethylsiloxane(PDMS)/CaCO3 system was investigated in this paper.The dynamic properties of PDMS/CaCO3 system containing modified CaCO3 were determined by plane-plate rheometer,and the results showed that the tendency th

Abstract:With the case of strategic environmental assessment(SEA) of Wuhan Outline of the 11th Five-Year Plan,technical framework,indicators and methods of SEA of urban national economic and social development plan were discussed.The case study showed that the com

Abstract:Considering the high computational cost of traditional optimal design of computer experiments, the original stochastic evolutionary algorithm was improved by balancing the depth searching and broadness searching. And optimal experiment design by steps was

Abstract:This paper analyzed the internal architectures and retargeting mechanisms of GCC,and pointed out that GCC was very convenient to be retargeted because of its separate and relatively independent front end and back end.By using Nios,a processor for embedded

Abstract:Using the continuity of object's motorial,this papar combinesd prediction of movement with distance measure,and put forward a localization algorithm with prediction of movement.This algorithm doesn't need any additional hardware,and has wonderful adaptati

Abstract:This paper is devoted to the nonhomogeous nonlinear biharmonic equation with Navier boundary condition, and has proved the existence of positive solutions of this problem. Thus, we have improved the conclusions of Guo zhen - hua.

Abstract:The assumption of homoscedasticity is commonly concerned with regression analysis.Also,it is a major problem to study homo-dispersion in generalized nonlinear reproductive dispersion model.In this paper,the Score tests were carried out to test the hypothe

Abstract:Liquidity is an important index to measure the security of stock market.This paper applied the co-integration method to analyze the relationship between the capital invested by institutions and the liquidity of stock market considering macro-variables eff