How is a speaker introduced at a Chinese mathematics conference?
欢迎来自南开大学的Rebecca Stones（中文叫李蓓），她将谈论＂枚举偏拉丁矩的四种方法＂．


It should be the same as other conference, I guess. Normally, the words 欢迎 somebody will be put at the last sentence. Or the session host will say "让我们欢迎" somebody, or "下面有请" somebody "上台". And if the speaker is someone that important but not all the audience know, the host will also introduce the speaker's title and achievement a little bit.

It's hard to predict other people's words, but let's try a simple:


  下面一位演讲者是来自南开大学的Rebecca Stones， 她的中文名是李蓓。她目前任教于南开大学计算机与控制工程学院，主要研究方向是xxx。曾经在xxx期刊发表过xxx论文。今天她将给大家介绍“枚举偏拉丁矩的四种方法”，让我们欢迎李蓓（有请李蓓/有请李蓓上台）。