分析了基于Spring技术医药进销存管理系统,系统使用MyEclipse8.5作为主要的开发工具和SQL Server 2008为后台数据库服务器,采用Java中的Spring的开发框架开发本系统,运用C/S架构思想的系统设计,采用结构化的开发方法开发,一共包括4个主...分析了基于Spring技术医药进销存管理系统,系统使用MyEclipse8.5作为主要的开发工具和SQL Server 2008为后台数据库服务器,采用Java中的Spring的开发框架开发本系统,运用C/S架构思想的系统设计,采用结构化的开发方法开发,一共包括4个主要模块,分别是:基本信息管理模块、业务管理管理模块、用户管理模块、业务查询模块,其中的核心模块——业务管理模块包括药品采购管理功能、药品销售管理功能、药品库存管理功能。展开更多
Piezoelectric ceramic is hard to be integrated with the normal spring structure.To address the above problem,this paper proposed a new geometry of a clip‑like spring which is very similar to binder clip in our daily l...Piezoelectric ceramic is hard to be integrated with the normal spring structure.To address the above problem,this paper proposed a new geometry of a clip‑like spring which is very similar to binder clip in our daily life.The equivalent stiffness of the designed piezoelectric clip‑like spring is thoroughly researched and discussed through the theoretical model,the finite element simulation and the experimental measurement.The results confirm the possibility of designing a compact piezoelectric clip‑like spring,and the equivalent stiffness can be tuned through the several key geometric parameters.Finally,theoretical predictions confirmed by experimental results show that the equivalent stiffness of the spring structure is as function of the instantaneous angle of the clip,this stiffness variation caused by the geometric nonlinearity can be ignored in some practical engineering applications,which means it is possible to linearize the clip‑like spring and simplify the following dynamic model of the corresponding piezoelectric oscillators.展开更多
文摘分析了基于Spring技术医药进销存管理系统,系统使用MyEclipse8.5作为主要的开发工具和SQL Server 2008为后台数据库服务器,采用Java中的Spring的开发框架开发本系统,运用C/S架构思想的系统设计,采用结构化的开发方法开发,一共包括4个主要模块,分别是:基本信息管理模块、业务管理管理模块、用户管理模块、业务查询模块,其中的核心模块——业务管理模块包括药品采购管理功能、药品销售管理功能、药品库存管理功能。
基金This work was supported by the National Natural Science Foundation of China(No.51705251)the Introduction of Talent Research Start-up Fund of Nanjing Institute of Technology(No.YKJ201960).
文摘Piezoelectric ceramic is hard to be integrated with the normal spring structure.To address the above problem,this paper proposed a new geometry of a clip‑like spring which is very similar to binder clip in our daily life.The equivalent stiffness of the designed piezoelectric clip‑like spring is thoroughly researched and discussed through the theoretical model,the finite element simulation and the experimental measurement.The results confirm the possibility of designing a compact piezoelectric clip‑like spring,and the equivalent stiffness can be tuned through the several key geometric parameters.Finally,theoretical predictions confirmed by experimental results show that the equivalent stiffness of the spring structure is as function of the instantaneous angle of the clip,this stiffness variation caused by the geometric nonlinearity can be ignored in some practical engineering applications,which means it is possible to linearize the clip‑like spring and simplify the following dynamic model of the corresponding piezoelectric oscillators.
