认知无线电的若干关键技术研究(信号与信息处理专业优秀论文) - docin.com豆丁网 统本质上是～个动态变化的系统【6】。其动态性主要体现为用 户需求和用户行为的动态变化。对于单个用户，其服务质量（Qos，Quallty ofservice）需求不仅依赖于具体的通信应用，而且随着时间动态变化：对 于无线通信网络，随着网内终端用户的随机按入或
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积极扶持合作社提高其服务质量，引导合作社的规范性建设；
Thirdly, the government should assist farmer specialized cooperatives to improve the quality of services and introduce the building of farmer specialized cooperatives' normative.
最后对认证机构如何提高其服务质量，维持良好的顾客关系提出了建议。
Finally, some recommendations are proposed for certification agencies in order to improve their service quality and remain good relationship with their clients.
知识经济时代，市场竞争异常激烈，高校图书馆要在激烈的竞争中取胜就必须提高其服务质量。
In the knowledge economy times, the market competition is very drastic. University library, which wants to win in the drastic competition, must improve its service quality.
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