As the first attempt,this paper proposes a model for the Chinese high school timetabling problems (CHSTPs) under the new......

在对轴承内圈滚道进行抛光时要用到抛光心轴,原抛光心轴为一体结构,使用时主要用前部锥面,如磨损后则整体报废,浪费很大。针对以上......

针对超大型、两半式绞车滚筒的加工制造,需要解决的主要问题有工艺流程的设计以及折线绳槽的加工程序编程。在保证零件质量和工艺......

基于差异Cournot双头垄断模型,主要研究创新厂商在两部制许可方式下的许可总得益与创新规模、产品替代率之间的关系,进而将其与提......

Infrared spectrum is a general quantitation method which can be used to determine the concentration of a certain compone......

The aim of this paper is to exemplify how to solve the problem of selecting a candidate up to his/her acceptance trough ......

In this paper,we consider testing the hypothesis concerning the means of two independent semicontinuous distributions wh......

Using panel data from the China Family Panel Studies for 2010,2014 and 2016,this paper uses a two-part model,with the fi......