无公害农产品认证资源共享的分布式元数据服务系统  

Distributed metadata service system of certification resource sharing of pollution-free agricultural products

作　　者：席磊[1] 张龙龙[1] 郑光[1] 张浩[1] 张建华[1] 丁保华[2] 马新明[1,3] 

机构地区：[1]河南农业大学信息与管理科学学院,郑州450002 [2]农业部农产品质量安全中心,北京100028 [3]河南农业大学农学院,郑州450002

出　　处：《农业工程学报》2012年第8期139-145,共7页Transactions of the Chinese Society of Agricultural Engineering

基　　金：国家863计划项目(2006AA10Z270)

摘　　要：为实现无公害农产品认证资源的利用共享化,该文以广域分散的无公害农产品数字化认证资源为研究对象,以实现资源访问透明性为目标,进行了认证资源元数据服务关键技术的研究。通过对认证资源的完备性与关联性特征分析,提出多层次认证资源集合模型,进行资源组织与划分;围绕认证资源和资源间关系的描述,进行元数据规范设计,提出认证资源元数据框架模型;围绕资源分布管理与服务支持,对认证资源层次结构与共享服务功能结构进行水平分割,分布部署在由中心域与资源域构成的共享服务网络中,构建了认证资源共享服务体系结构,并探讨了元数据请求与元数据分布存储的技术。研究结果表明,通过认证资源共享服务可将广域分散的资源集成为一个虚拟的认证资源库,为消费者、企业、职能技术部门和政府等服务对象提供资源统一的逻辑视图,实现资源访问的透明性,同时也可为认证工作由符合性评价向农产品质量安全市场监管进行转变提供技术支撑,具有较好的应用推广前景。In order to utilize and share the digital certification resources for pollution-free agricultural products,the research of the key technology for the metadata service of the certification resources was conducted in this paper,taking the wide-area scattered storage pollution-free agricultural products digital resources as the investigated subject and transparent access to the certification resources.Through the feature analysis of completeness and relevance of the certification resources,the multi-level model of the certification resource set was proposed to conduct the organization and division of the resources.On the basis of the certification resources organization and the relations revelation between the resources,the metadata standards were designed and the certification resources metadata frame model was presented in this paper.Based on resource allocation and management and service support,the hierarchy of the certification resources and the functional structure of the sharing service was levelly sliced and distributed in the sharing service network composed of the center domain and resource domain to construct the certification resources sharing service system structure.Moreover,the core technologies such as the metadata distributed storage,metadata request and so on also were discussed in this paper.Finally,a virtual certification resources database integrated by the wide-area scattered certification resources through the certification resources sharing service was established to provide the unified resources logical view to the service objects such as consumers,enterprises,functional technology departments,governments and achieved the transparent resources access.This research also provides the technical support for the transition of the certification work from the evaluation of conformity to the market supervision of the agricultural products quality safety and has good prospects of application and promotion.

关 键 词：农产品 网络服务 分布式数据库系统 元数据 无公害 资源共享 

分 类 号：S126[农业科学—农业基础科学] TP274[自动化与计算机技术—检测技术与自动化装置]