交错群A_p的数量刻画(英文)

证明了若p≥ 5且p与p - 2 均为素数 ,则交错群Ap 可用元的阶刻画     

Effective Factors on Forming Precision in Patternless Casting Manufacturing Technique

The patternless casting manufacturing (PCM) technique, which adopts a new concept of double scanning method, combines the principle of discreteness and deposition with resin-bonded sand technique. This paper is to evaluate the dimensional accuracy of sand mould on PCM. The two important factors-the liquid penetration rule in the space of particles and the shape and dimension of the agglomeration unit body, which influence the process parameters such as scanning speed, layer thickness, liquid flux on dimension accuracy, and surface qualities, were investigated systematically, thus the theoretical basis for these parameters was provided. Experiments on rapid manufacturing of sand mould were carried out, and the results of the free penetration and the constraint penetration well verified the relationship of the two factors and the process parameters.     

如何学好アクセント——介绍几种掌握日语アクセント的规律

长春长春白　晶长春如何学好アクセント——介绍几种掌握日语アクセント的规律@白晶$长春大学外国语学院!长春130022     

Effects of Electrochemical Treatment on the Superficial Properties of Rayon-based Carbon Fibers

The development of surface acidity on rayon-based carbon fibers during mild electrochemical treatment was investigated. Conductimetric titration was the primary method used to investigate the functionalities on the carbon fiber surface. The acidity on the surface of the untreated carbon fiber was very low, while for the treated fibers, the acidity increased significantly. Moreover, with the treatment extent proceeded, the acidity on the fiber surface also increased. SEM analysis shows electrochemical treatment under intense treatment degree caused considerable etch on the fiber surface. Cavities and grooves can be observed on the surface via the SEM microphotograph. While in a more mild treatment, electrochemical treatment didn't cause great etch on the surface of the fiber.     

预则型动态交通网络配流模型

提出卫种预测型动态交通网络配流模型，利用最优控制理论和最优化原理推出了模型最优解存在的条件，并给出最优解的经济解释，体现模型体现了道路使用者对路树的预测依赖于先进的交通信息系统和决策者的理发预测的特点，它与实际情况更为接近。     

The Relationship between the Mechanical Properties of Pure Silk Fabrics and Dress Performance

In this paper, the relationship between mechanical properties of 30 pieces of pure silk fabrics and the dress performance has been analyzed. With the methods of multifactor linear step regression and discrimination analysis, the judgment and prediction model of the performance have been established.     

中高碳钢堆焊技术的应用及研究进展

介绍了近年来堆焊技术在中高碳钢的应用和堆焊焊条的研制进展情况。     

Construction Model of Enterprise Innovation Capacity

This paper sets up the construction model of enterprise innovation capacity by analyzing the personal nature, organization, knowledge and market demand. And this paper demonstrates that enterprise innovation capacity should be based on knowledge grasped by personal and organization in the enterprise. Whether the profit can be brought by innovation is mainly decided by competition advantage from innovation capacity.     

F-117A飞机外形隐身性能的研究

本文简要地介绍了美国隐身战斗机F—117A的有关情况,并模拟了F-117A的外形,制作了模型,经雷达测试后,得出在各姿态角下的雷达散射截面,用突防理论对F—117A进行隐身性能分析。并据此得出了应加强具有隐身性能材料研究的结论。     

智能化人口-经济发展战略决策支持系统CDSS

本文提出将基于人工智能技术、运用知识和推理的专家系统与基于数字仿真技术、运用数据和模型的仿真模型体系相集成的智能化决策支持系统CDSS。CDSS用领域专家的知识选择和组合模型,完成问题的推理和系统的仿真运行。系统支持决策过程的各阶段并通过人-机界面实现定性与定量相结合的交互式决策。其系统结构对解决管理科学中非结构化问题具有普遍适用的价值。