需求弹性及其经济应用

文章主要阐述了需求价格弹性的概念及其在经济上的应用，分析并测定商品的需求价格弹性，对进行市场分析、确定或变动商品的价格有很大参考价值。     

Study on optimization of agent initial positions in land combat simulation

The use of computational-intelligence-based techniques in the optimization of agent initial positions in land combat simulations is studied. A novel method for the reduction of support vectors in the support vector machine (SVM) is presented. The optimization on the width of the Gaussian kernel function and the combination of the SVM with the radial basis function neural network are performed in the proposed method. Simulation results show that the proposed method can improve the running efficiency drastically compared with that using the traditional SVM with the same precision. We also summarize and present some experiences and trends in the study on the optimization problem in land combat simulation.     

Estimate of error bounds in the improved support vector regression

An estimate of a generalization error bound of the improved support vector regression(SVR)is provided based on our previous work.The boundedness of the error of the improved SVR is proved when the algorithm is applied to the function approximation.     

Inhibitory effect of the adenovirus type 5 E1A protein expressed in the yeast system on the human tumor cell growth

Adenovirus 5 type E1A as a tumor suppressor gene can inhibit tumor growth and enhance the sensitivity of chemotherapy and radiotherapy. E1A have the ability to integrate into the host genome, resulting in long-time expression that induces Rb gene inactivation and animal cells immortalization. This prompted us to select the E1A protein for treatment of cancer in order to overcome the limitations of E1A gene therapy. Thus, we firstly constructed E1A eucaryotic expression vector (pPIC9/E1A), transformated the pichia pastoris yeast cells (GS115) and screened the high-expressing recombinant strains. The positive yeast strains were cultured in the shake flask, and induced for 3 d. The crude E1A protein was purified using two steps of column chromatography on HiTrap Q and HiTrap SP. The purified E1A protein was identified by SDS-PAGE and Western blot. E1A protein was mostly located at cellular nuclear when Chariot delivered E1A protein into cells. The analysis in vitro indicated that the E1A protein arrested LN686 cell cycle at G2/M phase, and significantly inhibited the growth of LN686 tumor cells. The current studies firstly provided an experimental basis to further develop E1A protein for tumor treatment.     

理想量子气体高温条件下的相对论热容量

通过严格的理论推导,给出理想量子气体在高温条件下的相对论的状态方程、内能和热容量,并与高温条件下的非相对论结论对比,可看出相对论与非相对论两种理论的差异.     

强化大学生思想政治工作的心理学途径

思想是存在于人们头脑中有意识的主观精神，包括政治、道德、法纪等内容。从心理学的角度看，思想观念的形成是人在实践基础上的切身体验和思维活动的结果，是伴随着认识、情感、情绪、意志的转移而完成的，文章从强压大学生思想政治工作的心理学途径进行了阐述。     

Killer酵母筛选及其生理特性的研究

从自然界中筛选出一株Ｋｉｌｌｅｒ酵母６Ｂ２，对Ｋ酵母具有杀伤能力，同时对６Ｂ２野生酵母的生理特性进行了初步研究，发现该菌不仅具有样伤其他它酵母的能力，而且经发酵后可产生一类的香味物质。     

氨基酸与苯甲酰基丙烯酸酯的不对称迈克尔加成反应

研究了氨基酸与苯甲酰基丙烯酸酯的迈克尔(Michel)加成反应,提出了新的纯化方法,提高了产品纯度,并合成出4种新的不对称加成产物.本方法不但可以用于ACEI(angiotensin converting enzyme inhibitor)类药物中间体的制备,也是一种简单有效的增加不对称碳原子数量、延长碳链的重要方法.     

ρ相依序列回归函数加权核估计

讨论ρ^~相依序列非参数回归函数加权核估计的强相合性。