This paper presents a methodology for evaluating hierarchical DDB architectures, based upon users′ pdf of mobility and call characteristics.

本文提出了一种对DDB结构的性能估计方法，其基础是用户的移动性和呼叫特性的概率分布。

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Based upon users' basic demands and with gradual expansion of data analysis and case analysis, the functional demand and the system border are finally defined.

从用户的基本需求起步，经过数据分析、用例分析的逐步扩展，最终明确了功能需求和系统边界。

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The alerts can include information about other metrics that affect the sales figures, and users can make changes based upon the data presented.

警报可以包括有关影响销售数字的其他指标的信息，用户可以基于提供的数据进行更改。

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Users might get to choose versions of the game based upon the various musical themes the band touched upon, such as the Old West, biblical legends and the cosmos.

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Based upon the theme of the image they're looking for, users can also search by whether it's a portrait, couple, or group photo and can even search for those images that are either city or landscape shots.

ENGADGET: Samsung gets official with 14.7MP TL34HD point-and-shoot

Users revolted, claiming that Facebook had violated the social compact upon which the company is based.

NEWYORKER: The Face of Facebook