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BEGIN:VCALENDAR VERSION:2.0 PRODID:-//Penn Engineering Events - ECPv6.18.0//NONSGML v1.0//EN CALSCALE:GREGORIAN METHOD:PUBLISH X-WR-CALNAME:Penn Engineering Events X-ORIGINAL-URL:https://seasevents.nmsdev7.com X-WR-CALDESC:Events for Penn Engineering Events REFRESH-INTERVAL;VALUE=DURATION:PT1H X-Robots-Tag:noindex X-PUBLISHED-TTL:PT1H BEGIN:VTIMEZONE TZID:America/New_York BEGIN:DAYLIGHT TZOFFSETFROM:-0500 TZOFFSETTO:-0400 TZNAME:EDT DTSTART:20190310T070000 END:DAYLIGHT BEGIN:STANDARD TZOFFSETFROM:-0400 TZOFFSETTO:-0500 TZNAME:EST DTSTART:20191103T060000 END:STANDARD BEGIN:DAYLIGHT TZOFFSETFROM:-0500 TZOFFSETTO:-0400 TZNAME:EDT DTSTART:20200308T070000 END:DAYLIGHT BEGIN:STANDARD TZOFFSETFROM:-0400 TZOFFSETTO:-0500 TZNAME:EST DTSTART:20201101T060000 END:STANDARD BEGIN:DAYLIGHT TZOFFSETFROM:-0500 TZOFFSETTO:-0400 TZNAME:EDT DTSTART:20210314T070000 END:DAYLIGHT BEGIN:STANDARD TZOFFSETFROM:-0400 TZOFFSETTO:-0500 TZNAME:EST DTSTART:20211107T060000 END:STANDARD END:VTIMEZONE BEGIN:VEVENT DTSTART;TZID=America/New_York:20200219T150000 DTEND;TZID=America/New_York:20200219T160000 DTSTAMP:20191219T203405Z CREATED:20191219T203405Z LAST-MODIFIED:20191219T203405Z UID:2388-1582124400-1582128000@seasevents.nmsdev7.com SUMMARY:CBE Faculty Candidate Seminar: Decomposition: Exploiting Structure in Chemical Systems to Solve Challenging Decision-Making Problems" DESCRIPTION:Abstract: \nComputational optimal decision-making tools are essential for ensuring that systems are designed\, operated\, and controlled in an economic and sustainable manner. Using optimization to make decisions for chemical and energy systems is particularly challenging due to the inherent presence of nonlinear process physics\, both integer and continuous decisions\, uncertainties in important parameters\, and multiple relevant time scales. This talk addresses the method of decomposition\, which solves large\, computationally challenging decision-making problems through a set of smaller\, easier-to-solve subproblems. The first half of this talk addresses the problem of identifying smaller subproblems that make the large problem easy to solve. An algorithmic framework for automatically doing so using community detection\, a concept from network theory\, is presented. The superiority of using community-based decompositions to solve optimization problems\, compared to other intuition-based decompositions\, is showcased through an optimal model predictive control case study. The ability of the algorithm to identify subproblems when an intuitive decomposition does not exist is also demonstrated. The second part of the talk addresses the challenge of coordinating subproblems to arrive at a solution of the original problem. Here\, a branch-and-price algorithm which can solve certain classes of nonconvex mixed integer nonlinear programs (the most challenging type of optimization problem to solve) to global optimality is presented. The applicability of this algorithm to many problems of chemical engineering interest\, including process design under uncertainty\, multiperiod capacity planning\, dynamic facility location\, and task assignment to process units\, is demonstrated. URL:https://seasevents.nmsdev7.com/event/cbe-seminar-decomposition-exploiting-structure-in-chemical-systems-to-solve-challenging-decision-making-problems/ LOCATION:Wu and Chen Auditorium (Room 101)\, Levine Hall\, 3330 Walnut Street\, Philadelphia\, PA\, 19104\, United States CATEGORIES:Seminar ORGANIZER;CN="Chemical and Biomolecular Engineering":MAILTO:cbemail@seas.upenn.edu END:VEVENT END:VCALENDAR