<< Monday, February 24, 2020 >>

## Monday, February 24, 2020

### Achieve Together Practice Lab for Managers/ Supervisors

Workshop | February 24 | 9:30 a.m.-12 p.m. | University Hall, Rm#24 (basement)

Human Resources

These 2.5hr experiential learning sessions make space for managers/supervisors to practice creating and communicating goals, check-in conversations, and calibrating performance using the Achievement Criteria.

### OPT Doc Check Workshop

Workshop | February 24 | 10-11 a.m. | 60 Barrows Hall

Attend an interactive one hour workshop to review your OPT application with an international student adviser! This is a group workshop that allows you to follow along as a BIO adviser leads you through the application step by step.

During this workshop, you will go over the required documents, how to fill out forms, and most common mistakes in the application. Please bring ALL required...   More >

### Quantifying the environmental influences on human health through the lens of human-microbial interactions: Dr. Wenyu Zhou, Stanford University

Seminar | February 24 | 10-11:30 a.m. | 1205 Berkeley Way West

Abstract: Our public health is threatened by widespread complex diseases such as diabetes and cardiovascular diseases, the etiology of which cannot be fully dissected from a single perspective. The commensal microbiome, recently emerged as a "hidden organ", should not be left behind owing to its pivotal role in modulating human health...   More >

### A Computer Vision-Based Wayfinding Aid for Visually Impaired Travelers

Seminar | February 24 | 11:10 a.m.-12:30 p.m. | 489 Minor Hall

James Coughlan, Senior Scientist, Smith-Kettlewell Eye Research Institute

Wayfinding is a major challenge for visually impaired travelers, who often lack access to visual cues such as landmarks and informational signs that many travelers rely on for navigation. Indoor wayfinding is particularly challenging since the most commonly used source of location information for wayfinding, GPS, is inaccurate indoors. We describe a computer vision approach to indoor localization...   More >

### Continuum-Inspired Methods for Modeling Flowing Grains: Berkeley Fluids Seminar

Seminar | February 24 | 12-1 p.m. | 3110 Etcheverry Hall

Professor Ken Kamrin, Department of Mechanical Engineering, MIT

Abstract: Granular materials are common in everyday life but are historically difficult to model. This has direct real-world ramifications owing to the prominent role granular media play in multiple industries and in terrain dynamics. One can attempt to track every grain with discrete element methods (DEM), but realistic systems are often too large for this approach and a continuum model is...   More >

Seminar | February 24 | 12-1 p.m. | 639 Evans Hall

Lionel Fontagne, Paris School of Economics, Université Paris I Panthéon Sorbonne

Department of Economics

### SEMM Seminar: Seismic Assessment and Strengthening of Historic Buildings - Exemplary Case Studies

Seminar | February 24 | 12-1 p.m. | 502 Davis Hall

Terrence Paret, Wiss, Janney Elstner Associates, Inc.

Seismic assessment and strengthening of historic buildings present
challenges that are not present on more routine design projects. Historic projects require a re-prioritization of engineering
considerations to be successful. Sherith Israel and Hibernia Bank, two pre-1906 buildings in San Francisco epitomize that reprioritization; both projects left the historic interiors and exteriors...   More >

### Colloquium with Kuochic Huang: Do Incentivized Managers Pay Their Workers Less?

Colloquium | February 24 | 12-1 p.m. | 2521 Channing Way (Inst. for Res. on Labor & Employment), IRLE Building, Director's Room

Kuochih Huang, Institute for Research on Labor and Employment

Paper Abstract
Since the 1980s, Chief Executive Officers’ (CEO) pay has exploded, largely in the form of equity-based incentive compensation such as stock awards and options. Using a two-tiered principal-agent model, we show that aligning managers’ incentives with shareholder interests through equity-based pay can lower workers’ wages. Analyzing a sample that matches firm, manager, and worker...   More >

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### In Plenty and in Time of Need: Popular Culture and the Remapping of Barbadian Identity

Presentation | February 24 | 12 p.m. | 650 Barrows Hall

Lia T. Bascomb, Assistant Professor of African American Studies Georgia State University

A demonstration of how the unique history of Barbados
has contributed to complex relations of national,
gendered, and sexual identities, and how these identities
are represented and interpreted on a global stage

### Combinatorics Seminar: Crystals for nonsymmetric Macdonald polynomials.

Seminar | February 24 | 12:10-1 p.m. | 939 Evans Hall

Nicolle Gonzalez, MSRI and UCLA

Department of Mathematics

Nonsymmetric Macdonald polynomials were introduced independently by Opdam and Macdonald and then generalized by Cherednik. These polynomials not only generalize the two-parameter symmetric Macdonald polynomials, when specialized to $t=0$ they were shown by Sanderson and Ion to arise as characters of affine Demazure modules. In this talk, I will present a new crystal-theoretic proof of this fact...   More >

### Political Economy Seminar: "A Behavioral Theory of Discrimination in Policing"

Seminar | February 24 | 12:30-2 p.m. | 223 Moses Hall

Andrew Little, UC Berkeley

Department of Political Science

The Political Economy Seminar focuses on formal and quantitative work in the political economy field, including formal political theory.

### Achieve Together Practice Lab for Individual Contributors

Workshop | February 24 | 1:30-4 p.m. | University Hall, Rm#24 (basement)

Human Resources

These 2.5hr experiential learning sessions make space for individual contributors to practice creating and communicating goals, check-in conversations, and calibrating performance using the Achievement Criteria.

### Seminar 231, Public Finance:

Seminar | February 24 | 2-4 p.m. | 648 Evans Hall

Kristoffer Berg - "Revealing Equity Principles from the Tax System"
Santiago Garriga - "Incidence and wage effects of means-tested transfers" with Dario Tortarolo

### String-Math Seminar: Coulomb branches for quaternionic representations

Seminar | February 24 | 2-3 p.m. | 402 LeConte Hall

Constantin Teleman, UC Berkeley

Department of Mathematics

We will discuss the definition of Coulomb branches in N=4 SUSY field theories in 3 dimensions, adapting the Braverman-Finkelberg-Nakajima construction to the case of non-polarized representation. Their computation can be done by an Abelianization theorem. Time permitting, I will discuss the associated TQFT.

Workshop | February 24 | 2:30-5:30 p.m. | 177 Stanley Hall

Dr. Julie Rorrer, ColorMePhD

Turn an abstract or a research statement of your choice into a description for a wide audience using techniques in science communication.

Space is LIMITED, PLEASE REGISTER for the workshop through Eventbrite at https://tinyurl.com/slam-colormephd!

### Gašper Beguš, (Deep) Learning in Phonology

Colloquium | February 24 | 3-5 p.m. | 370 Dwinelle Hall

Department of Linguistics

### ERG Colloquium: Robert Connell: Maroon Ecology: Survival, Sovereignty, and Solar Power in the Afterlife of Slavery

Colloquium | February 24 | 3-4:30 p.m. | 101 Barker Hall

Robert Connell, University of California, Davis

Energy and Resources Group

This talk presents a socio-historical anthropology of power in the high-stakes environmental justice struggle of a Black Caribbean autonomous society. Jamaican Maroon contemporary political transformations and sovereignty aspirations stand in opposition to bauxite mining that threatens their highland forest traditional territory. Although Maroon political systems were founded in the context of...   More >

### Probabilitic Operator Algebra Seminar: Asymptotic $\varepsilon$-independence II

Seminar | February 24 | 3-4 p.m. | 748 Evans Hall

Ian Charlesworth, NSF Postdoctoral Fellow UC Berkeley

Department of Mathematics

Continuation of the February 10 seminar talk.

### Arithmetic Geometry and Number Theory RTG Seminar: Torsion points on the Catalan curve $y^n = x^d + 1$

Seminar | February 24 | 3:10-5 p.m. | 740 Evans Hall

Vishal Arul, MIT

Department of Mathematics

The goal of this talk is to classify torsion points on the curve $y^n = x^d + 1$ over the complex numbers, where $n$, $d$ are at least 2 and are coprime. This generalizes a result of Grant and Shaulis, who provide this classification for $n = 2$ and $d \ge 7$ prime. We will motivate the method by studying a theorem of Poonen and Stoll that the only torsion points on a generic hyperelliptic curve...   More >

### Differential Geometry Seminar: A curious 4-dimensional appearance of hyperbolic knots in $S^3$

Seminar | February 24 | 3:10-4 p.m. | 939 Evans Hall

Clifford Taubes, Harvard

Department of Mathematics

A 4-manifold is constructed with some curious metric properties; or maybe it is many 4-manifolds masquerading as one, which would explain why it looks curious. Anyway, knots in the 3-sphere with complete finite volume hyperbolic metrics on their complements play a role in this story.

### Dynamic Disruption Management in Airline Networks under Airport Operating Uncertainty

Seminar | February 24 | 3:30-4:30 p.m. | 3110 Etcheverry Hall

Lavanya Marla, University of Illinois Urbana-Champaign

Abstract: Operating disruptions result in enormous costs across spatial-temporal networks. For instance, air traffic disruptions result in flight delays, cancellations, passenger misconnections, creating high costs to aviation stakeholders. Businesses often design recovery plans in response to past disruptions while preparing for future disruptions. However, future disruptions often can only be...   More >

### Seminars 271 and 281, Development and International Trade and Finance: The Returns to Face-to-Face Interactions: Knowledge Spillovers in Silicon Valley

Seminar | February 24 | 4-5:30 p.m. | 648 Evans Hall

David Atkin, Massachusetts Institute of Technology

Department of Economics

### Seminar 208, Microeconomic Theory: "Behavioral Influence"

Seminar | February 24 | 4-5:30 p.m. | 639 Evans Hall

Yusufcan Masatlioglu, University of Maryland

Department of Economics

### Trend Filtering, From Univariate to Graphs, and Old and to New: Neyman Seminar

Seminar | February 24 | 4-5 p.m. | 1011 Evans Hall

Ryan Tibshirani, Carnegie Mellon University

Department of Statistics

This talk is centered around trend filtering, a relatively recent method for nonparametric regresson based on penalizing the L1 norm of discrete derivatives. We will discuss some of the unique features of this method that "make it work", and briefly cover extensions to additive models and graphs. We will finish by discussing connections to what are an old topic in numerical analysis---discrete...   More >

### Interactive proofs and quantum entanglement

Seminar | February 24 | 4-5 p.m. | Sutardja Dai Hall, Banatao Auditorium, 310

Anand Natarajan, IQIM Postdoctoral Scholar, California Institute of Technology

Interactive proof systems are a classic idea in theoretical computer science, and have led to fundamental advances in complexity theory (hardness of approximation and the PCP theorem) and cryptography. Remarkably, in quantum information, interactive proof systems with multiple provers have become an important tool for studying quantum entanglement, extending the pioneering work of Bell...   More >

### Digging Deeper: the long term impacts of agriculture on soil carbon and overall soil health

Seminar | February 24 | 4-5 p.m. | Morgan Hall, Morgan Lounge

Jessica Chiartas, University of California, Davis

In an effort to improve both environmental and agronomic outcomes, while building resilience in the face of climate change, there is growing interest in soil carbon sequestration and, overall, soil health. While there is a general consensus as to the overarching principles that promote soil carbon storage and soil health, the impact of any given practice across the range of climates, soil types,...   More >

### Analysis and PDE Seminar: Almost global well-posedness for quasilinear strongly coupled wave-Klein-Gordon systems in two space dimensions

Seminar | February 24 | 4:10-5 p.m. | 939 Evans Hall