Coins, cards, or apps - Impact of payment methods on street parking occupancy and search times
Authors: Sena Onen Oz, Mehmet Gumus, and Wei Qi
Publication: Production and Operations Management Forthcoming, Express: first published online 9 May 2025
Managing channel profits with positive demand externalities
Authors: Long Gao, Dawei Jian, Mehmet Gumus, and Birendra K. Mishra
A budgeting resource allocation model for capacity expansion
Authors: Senay Solak, Zhuoxin Li, Mehmet Gumus and Yueran Zhuo
Managing Channel Profits with Positive Demand Externalities
Authors: Long Gao, Dawei Jian, Mehmet Gumus and Barry Mishra
Publication: Management Science, Forthcoming 2024.
Inventory Control and Learning for One-Warehouse Multistore system with Censored Demand
Authors: Recep Yusuf Bekci, Mehmet Gumus and Sentao Miao.
Publication: Operations Research, Forthcoming. Article in advance, published online: August 2, 2023.
Desautels’ event highlights innovative research and recognizes scholars
On Friday, May 13, members of the Desautels Faculty of Management gathered to celebrate the innovative and impactful research conducted by its scholars.
Fifteen professors were on hand to deliver two-minute presentations of their most interesting and research.
Online-Exclusive or Hybrid? Channel Merchandising Strategies for Ship-to-Store Implementation
Authors: N. Ertekin, Mehmet Gumus, and M.E. Nikoofal
Publication: Management Science, Forthcoming
Abstract:
An Empirical Analysis of Intra-Firm Product Substitutability in Fashion Retailing
Authors: E. Ergin, Mehmet Gumus, and N. Yang
Publication: Production and Operations Management, Forthcoming
Abstract:
Desautels professors awarded IVADO research funding
Four Desautels professors have been awarded research grants by the Institute for Data Valorization (IVADO), a Montreal-based scientific and economic data science hub. The grants will fund three two-year research projects led by Desautels professors as part of IVADO’s Fundamental Research Funding Program.
Value of Audit for Supply Chains with Hidden Action and Information
Authors: Mohammad Nikoofal, Mehmet Gumus
Publication: European Journal of Operational Research, Forthcoming
Abstract:
Supply Competition under Quality Scores: Motivations, Information Sharing and Credibility
Authors: Hedayat Alibeiki, Mehmet Gumus
Publication: International Journal of Production Economics, Forthcoming
Abstract:
Professor Mehmet Gumus awarded 2019 NSERC Discovery Grant
Mehmet Gumus, Associate Professor in Operations Management was recently awarded a 2019 NSERC Discovery Grant.
Optimizing Foreclosed Housing Acquisitions in Societal Response to Foreclosures
Authors: Senay Solak, Armagan Bayram, Mehmet Gumus, Yueran Zhuo
Publication: Operations Research, Forthcoming
Abstract:
A dramatic increase in U.S. mortgage foreclosures during and after the great economic recession of 2007-2009 had devastating impacts on the society and the economy. In response to such negative impacts, non-profit community development corporations (CDCs) throughout the U.S. utilize various resources, such as grants and lines of credit, in acquiring and redeveloping foreclosed housing units to support neighborhood stabilization and revitalization. Given that the cost of all such acquisitions far exceeds the resources accessible by these non-profit organizations, we identify socially optimal policies for CDCs in dynamically selecting foreclosed properties to target for potential acquisition as they become available over time. We evaluate our analytical results in a numerical study involving a CDC serving a major city in the U.S, and specify social return based thresholds defining selection decisions at different funding levels. We also find that for most foreclosed properties CDCs should not offer more than the asking price, and should typically consider overbidding only when the total available budget is low. Overall, comparisons of optimal policies with historical acquisition data suggest a potential improvement of around 20% in expected total impacts of the acquisitions on nearby property values. Considering a CDC with annual fund availability of $4 million for investment, this corresponds to an estimated additional value of around $280,000 for the society.
Designing Risk‐Adjusted Therapy for Patients with Hypertension
Authors: Manaf Zargoush, Mehmet Gumus, Vedat Verter, Stella S. Daskalopoulou
Publication: Production and Operations Management, Forthcoming
Abstract:
Limited guidance is available for providing patient‐specific care to hypertensive patients, although this chronic condition is the leading risk factor for cardiovascular diseases. To address this issue, we develop an analytical model that takes into account the most relevant risk factors including age, sex, blood pressure, diabetes status, smoking habits, and blood cholesterol. Using the Markov Decision Process framework, we develop a model to maximize expected quality‐adjusted life years, as well as characterize the optimal sequence and combination of antihypertensive medications. Assuming the physician uses the standard medication dose for each drug, and the patient fully adheres to the prescribed treatment regimen, we prove that optimal treatment policies exhibit a threshold structure. Our findings indicate that our recommended thresholds vary by age and other patient characteristics, for example (1) the optimal thresholds for all medication prescription are nonincreasing in age, and (2) the medications need to be prescribed at lower thresholds for males who smoke than for males who have diabetes. The improvements in quality‐adjusted life years associated with our model compare favorably with those obtained by following the British Hypertension Society's guideline, and the gains increase with the severity of risk factors. For instance, in both genders (although at different rates), diabetic patients gain more than non‐diabetic patients. Our sensitivity analysis results indicate that the optimal thresholds decrease if the medications have lower side‐effects and vice versa.
Quality at the Source or at the End? Managing Supplier Quality Under Information Asymmetry
Authors: Mohammad E. Nikoofal, Mehmet Gumus
Publication: Manufacturing & Service Operations Management, Vol. 20, No. 3, Summer 2018
Abstract:
