International Research Fellow Awards: Reentrant Line Models for Use in Semiconductor Manufacturing

9971484哈森贝国际研究员奖励计划使美国科学家和工程师能够在国外进行三到二十四个月的研究。该计划的奖励为联合研究提供了机会，并利用独特或互补的设施、专业知识和国外的实验条件。该奖项将支持德克萨斯大学奥斯汀分校的John Hasenbein博士进行为期9个月的博士后研究访问，与墨西哥瓜纳华托州Victor Perez-Abreu博士指导的数学研究中心（CIMAT）的研究人员合作。本研究的重点是研究用于半导体工业的可重入线模型。半导体晶圆的生产涉及数百个步骤和工作，这些步骤和工作要经过数十台机器的高度可重复进入的路线。可重入路由是指零件在后续步骤中多次重新访问机器。对生产过程的有效控制每年可为该行业节省数百万美元。哈森拜因博士的研究将研究有助于分析和控制这些生产系统的数学工具。他将专注于随机处理网络模型。数学研究中心拥有纯数学、概率论和统计学领域的40名核心数学研究人员。它还接待了来自拉丁美洲和世界各地的许多专业访问研究人员。CIMAT举办了许多与哈森拜因博士的研究相关的研讨会、会议和短期课程。他不仅能够与来自墨西哥和其他国家的研究人员建立持久的合作关系，而且他的经验将有助于提升运筹学和相关数学建模领域的国际地位

9971484HasenbeinThe International Research Fellow Awards Program enables U.S. scientists and engineers to conduct three to twenty-four months of research abroad. The program's awards provide opportunities for joint research, and the use of unique or complementary facilities, expertise and experimental conditions abroad.This award will support a nine-month postdoctoral research visit by Dr. John Hasenbein, University of Texas, Austin to work with researchers from the Center for Mathematical Research (CIMAT), under the direction of Dr. Victor Perez-Abreu, in Guanajuato, Mexico.The focus of this research is to study reentrant line models for use in the semiconductor industry. The production of semiconductor wafers involves hundreds of steps and jobs, which traverse highly reentrant routes through scores of machines. Reentrant routing is when parts revisit machines multiple times in subsequent steps. Efficient control of the production process could save industry millions of dollars per year. Dr. Hasenbein's research will study mathematical tools that will help to analyze and control these production systems. He will focus on stochastic processing network models.The Center for Research in Mathematics has a core staff of 40 mathematical researchers in pure math, probability and statistics. It also hosts many professional visiting researchers from around Latin America and the world. CIMAT hosts numerous seminars, conferences and short courses related to Dr. Hasenbein's research. Not only will he be able to establish enduring collaborations with these researchers from Mexico and other countries, but also his experience will contribute to the elevation of the international stature of the operations research and related mathematical modeling fields.***