以农资产品为研究对象,基于农资产品标识编码技术、LINQ to SQL的数据库编程和访问技术、GPRS的信息无线传输技术和角色控制的权限动态分配,构建基于B/S架构的多层次多用户多权限的农资可信流通监管系统,为农资企业、经销商和消费者搭...以农资产品为研究对象,基于农资产品标识编码技术、LINQ to SQL的数据库编程和访问技术、GPRS的信息无线传输技术和角色控制的权限动态分配,构建基于B/S架构的多层次多用户多权限的农资可信流通监管系统,为农资企业、经销商和消费者搭建农资产品生产、流通、销售和使用的各环节信息交互平台,并以电话、网络和短信为公众提供信息查询、投诉和溯源服务。该系统具有较好的示范推广应用前景。展开更多
A tunable thermo-optic intensity-modulated switch is investigated theoretically and numerically. It is based on the infiltration of temperature-sensitive mixture liquids into index-guiding photonic crystal fibers (P...A tunable thermo-optic intensity-modulated switch is investigated theoretically and numerically. It is based on the infiltration of temperature-sensitive mixture liquids into index-guiding photonic crystal fibers (PCFs). The switching function attributes to the thermo-optic effect of the effective refractive index of the cladding. The simulation illustrates that the switch presents a tunable transition point according to the concentration of the mixture liquids, and the on-off switching functionality can be realized within a narrow temperature range of 2 ℃. The switches have wide application for innovative all-in-fiber optical communication and logic devices.展开更多
文摘以农资产品为研究对象,基于农资产品标识编码技术、LINQ to SQL的数据库编程和访问技术、GPRS的信息无线传输技术和角色控制的权限动态分配,构建基于B/S架构的多层次多用户多权限的农资可信流通监管系统,为农资企业、经销商和消费者搭建农资产品生产、流通、销售和使用的各环节信息交互平台,并以电话、网络和短信为公众提供信息查询、投诉和溯源服务。该系统具有较好的示范推广应用前景。
基金supported by the National Key Basic Research and Development Program of China(No.2010CB327801)
文摘A tunable thermo-optic intensity-modulated switch is investigated theoretically and numerically. It is based on the infiltration of temperature-sensitive mixture liquids into index-guiding photonic crystal fibers (PCFs). The switching function attributes to the thermo-optic effect of the effective refractive index of the cladding. The simulation illustrates that the switch presents a tunable transition point according to the concentration of the mixture liquids, and the on-off switching functionality can be realized within a narrow temperature range of 2 ℃. The switches have wide application for innovative all-in-fiber optical communication and logic devices.