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Carolyn Butler entrepreneur startup circular economy
Feature

A Tech Entrepreneur Shaping a Truly Circular Economy

Carolyn Butler ’18 talks about creating a blueprint for the first truly circular business model in the US apparel industry.

Guave Kelly Ifill alum career Black and brown entrepreneurship startups
Feature

A Fintech Entrepreneur Bolstering Main Street Businesses

Kelly Ifill ’17 chats about career pivots, community, and her commitment to supporting Black and brown entrepreneurs.

Biotech Entrepreneur Nina Tandon EpiBone
Feature

Biotech Entrepreneur Grows Strong Bones and a Strong Business

Nina Tandon ’12 talks about the origin of EpiBone and overcoming the challenges facing women entrepreneurs.

Press

How You Feel Depends on Where You Are

Research from Sandra Matz shows that environment shapes our moods, potentially shedding light on the impact on individuals of months of isolation at home.

Press

Stereotypes Harm Black Lives and Livelihoods, but Research Suggests Ways to Improve Things

Modupe Akinola discusses her work on stereotyping, and how research can help us overcome our biases.

Press

Levi’s Agrees to #Payup, as Advocates Demand More for Garment Workers

The retailer is well-positioned to soften the blow dealt to garment workers by the pandemic, according to Urooj Khan.

Press

Do Americans Even Need A Second Stimulus Check?

For those with the least savings, stimulus checks provided a vital source of liquidity, Michaela Pagel and R.A. Farrokhnia find.

Latest Research

Social Marginalization Motivates Indiscriminate Sharing of COVID-19 News on Social Media

Author
Youjung Jun and Gita Johar
Date
Format
Journal Article
1 / 3

We find that people who experience social marginalization are more likely to share COVID-19 news indiscriminately, that is, sharing news that is factually untrue and true, as well as news that seems surprising and unsurprising. This effect, driven by their general motivation to seek meaning, holds when people self-identify as being socially marginalized (i.e., experiencing frequent feelings of discrimination) and when they are situationally induced to feel marginalized. We demonstrate that an intervention to help people obtain a temporary sense of meaning by having high (vs. low) power can reduce indiscriminate news sharing. For socially marginalized individuals, sharing news on social media appears to reflect a need to make sense of their world and comprehend it.

Utilizing Partial Flexibility to Improve Emergency Department Flow: Theory and Implementation

Authors
Carri Chan, Vahid Sarhangian, Prem Talwai, and and Kriti Gogia
Date
Format
Journal Article
Journal
Management Science
3 / 3

Emergency Departments (EDs) typically have multiple areas where patients of different acuity levels receive treatments. In practice, different areas often operate with fixed nurse staffing levels. When there are substantial imbalances in congestion among different areas, it could be beneficial to deviate from the original assignment and reassign nurses. However, reassignments typically are only feasible at the beginning of 8-12-hour shifts, providing partial flexibility in adjusting staffing levels. In this work, we propose a stochastic queueing network model of patient flow in the ED and study an associated fluid control problem to guide the reassignment decision for two types of nursing staff. We propose a heuristic solution approach and investigate its performance both analytically and using simulation. Analytical results and simulation experiments suggest a significant reduction of waiting times in parameter regimes relevant to the ED setting. We further implement the staffing approach at a large ED. This pilot study highlights several challenges of implementing operational interventions in the ED, including the difficulty of establishing a clean statistical environment in such setting. Despite these challenges, we find that guiding reassignment decisions using our approach is associated with significant improvements to patient flow including a reduction in average total ED length-of-stay (LOS) of 1.7 hours.

Latest Webinars & Presentations

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Webinar
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Economics & Policy

Why Value Investing is Making a Comeback

Professor Tano Santos, the Faculty Director of Value Investing and Advanced Value Investing programs at Columbia Business School, outlines the reasons why value investing is returning to a period of ascendancy.

Type
Webinar
Date
Economics & Policy

What Will Drive the Global Markets in 2023?

Columbia Business School Professor Abby Joseph Cohen recently joined former Dean Glenn Hubbard to discuss the forces that could shape the economy and markets in the year ahead.

Type
Webinar
Date
Data & Business Analytics

How Can Leaders Use Data to Make Better Decisions?

Columbia Business School Professors Oded Netzer, Christopher Frank and Paul Magnone discuss their new book, Decisions Over Decimals, which offers a roadmap for effective decision-making when using data.

Type
Webinar
Date
Economics & Policy, Entrepreneurship & Innovation

5 Questions About Value Investing and Finance

Professor Tano Santos, the Faculty Director of Value Investing and Advanced Value Investing programs at Columbia Business School, discusses the school’s approach to teaching value investing and finance.

Type
Webinar
Date
Data & Business Analytics

Driving Business Efficiencies at Uber Freight

Find out how Columbia Business School graduate Bar Ifrach, PhD ’12, now senior director of applied science and head of marketplace at Uber Freight, uses data to solve high-impact business problems.

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