Public relation is the essence of urban planning which aim is to study methods and rules in layout or coordinate on PR according to spatial relation.

城市规划本质上是“公共关系”性的，它以“空间关系”为依托，研究各种“公共关系”布局或组织协调的方法与原则。

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In this study, the problem how to use pr theory in the brand-building of the logistics industry was firstly discussed.

本文首次专门针对物流行业的品牌建设中对公关传播理论使用的问题进行研究。

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OBJECTIVE: Purpose to study the expression of P53 mutation protein, estrin receptor (er) and progestin receptor (pr) in mammary cancer and their relativity.

目的：探讨乳腺癌中P 5 3蛋白，雌激素受体(ER)，孕激素受体(PR)的表达及相关性研究。

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In January of this year a study by Fleishman Hillard, a Washington PR firm, discovered that Republicans in the House twittered more than five times as often as Democrats.

ECONOMIST: Politics and Twitter

The master researchers and PR wizkids at Edelman conduct the annual Edelman GoodPurpose Study, , which surveys the attitude of 8, 000 consumers across 16 countries in regards to social issues and the results they expect from brands and corporations.

FORBES: Net Impact's Army for Good and the Rise of the Enlightened Merchant