Sridhar Tayur

Sridhar R. Tayur
Sridhar R. Tayur
Nationality American
Alma mater Cornell University (Ph.D.)
IIT Madras (B.Tech.)
Known for Academic Capitalist
Infinitesimal Perturbation Analysis for inventory models;
Weak duality for integer programs;
Postponement with vanilla boxes;
SmartOps (Enterprise Inventory Optimization software);
OrganJet;
Ad placement in video games;
Nudge video for next-of-kin consent
Awards Member of National Academy of Engineering; INFORMS Fellow; MSOM Distinguished Fellow
Scientific career
Fields Operations Management
Operations Research
Management Science
Institutions Carnegie Mellon University

Sridhar R. Tayur is an American business professor, entrepreneur, and management thinker.[1][2] He is the Ford Distinguished Research Chair and Professor of Operations Management at the Tepper School of Business, Carnegie Mellon University, and the founder of SmartOps Corporation [3][4] and OrganJet Corporation.[5][6]

Tayur is known as an "academic capitalist,"[7] recognized for his contribution to Inventory Theory,[8] Supply Chain Management, Lean Manufacturing, Operations Strategy,[9] and Healthcare Management. He describes his own work as "research, industrial implementation, software entrepreneurship, investing in start-ups and turnarounds, and creating a social enterprise" that lies "in the intersection of math, money, and morals."[10] Tayur's work "has earned him a reputation as someone uniquely talented in identifying, and then solving, novel and timely problems confronting society," according to a 2014 Productions and Operations Management article honoring him.[11]

Education and career

Tayur attended Hyderabad Public School, Begumpet, an elite school in the state of Telangana. He earned his B. Tech in Mechanical Engineering from IIT Madras in 1986[12] and Ph.D. in Operations Research and Industrial Engineering from Cornell in 1990.

He joined Carnegie Mellon in 1991 as an assistant professor in The Graduate School of Industrial Administration (GSIA) (today known as Tepper School of Business), obtained tenure in 1996, and was promoted to full professor in 1998. He is currently Ford Distinguished Research Chair and Professor of Operations Management. Within Carnegie Mellon, he holds courtesy appointments in the Heinz College and Department of Electrical and Computer Engineering.[13] He is also Professor of Cardiology (by courtesy) at the Gerald McGinnis Center of West Penn Allegheny Health System.[14] Tayur has held visiting positions at Cornell University, Massachusetts Institute of Technology, and Stanford University.

Tayur was President (2001–2002) of the Manufacturing and Service Operations Management Society (MSOM),[15] one of the largest society of the Institute for Operations Research and the Management Sciences (INFORMS). He has served on the editorial board of Management Science, Operations Research, Manufacturing & Service Operations Management, IIE Transactions, Optimization and Engineering, and Productions and Operations Management, among others, and he is a Department Editor at Management Science, for the Entrepreneurship and Innovation Department.[16]

Tayur founded SmartOps (in 2000) and OrganJet (in 2011), and has consulted for various organizations, including Caterpillar,[4][17] ConAgra Foods,[18] Deere,[19] Flight Options,[18] General Electric,[4] GlaxoSmithKline,[8] Intel,[4] Kellogg's,[18] and Microsoft.[20] Tayur has also served as a "consultant to the firm" of McKinsey & Company in the areas of lean manufacturing and supply chain management. He is frequently quoted in popular media, including Financial Times,[21] NPR,[22] The Guardian,[23] and U.S. News & World Report.[24]

Academic work

Research

Tayur's work covers various Operations Management fields, including Supply Chain Management, Lean Manufacturing, and Healthcare. His papers have been published in Operations Research, Management Science, Manufacturing & Service Operations Management, Mathematics of Operations Research, Mathematical Programming, Queueing Systems, IIE Transactions, and Production and Operations Management, among others. Notable collaborators include INFORMS Fellows such as Robin Roundy (his Ph.D. thesis advisor), Jack Muckstadt, Paul Glasserman, and Dimitris Bertsimas; faculty colleagues Alan Scheller-Wolf, R. Ravi (INFORMS Fellow), and Ravi Kannan; and Ph.D. students Roman Kapuscinski, Pinar Keskinocak (INFORMS Fellow), and Jay Swaminathan (INFORMS Fellow).

Novel Algorithmic Methods. Tayur is recognized for his Operations Research work in developing novel algorithms for models in stochastic inventory theory (using Infinitesimal Perturbation Analysis),[25][26] integer programming (using Hilbert's Nullstellensatz, Algebraic Geometry, and Gröbner Basis Theory),[27][28] and chance constrained programs (using random walks and rapidly mixing Markov-chain theory).[29]

Manufacturing and Supply Chain Management. Tayur has developed models for kanban controlled serial lines,[30][31] for lead time quotation,[32][33] and for scheduling of capacitated multi-product systems using methods from queueing theory, stochastic models (including chance constrained programs) competitive analysis of on-line algorithms, algebraic geometry and mixed-integer linear programming.[28][34][35] Tayur's "Value of Information in Capacitated Supply Chains,"[36] published in Management Science in 1999, is among the top 20 most cited papers on supply chain management from 1995-2006"[37] and the top 30 most cited Management Science papers.[38] His work on "vanilla box" [39] and “models for supply chains in e-business”[40] is among the most popular references on supply chain management. He has also studied supply chain management of NGOs such as food banks.[41]

His current research explores how to effectively combat the dark side of global supply chains, such as child labor,[42] including understanding the potential impacts of a proposed national version of California's Supply Chain Transparency Act. He proposes several effective countermeasures to strategic counterfeiters, including those who are able to infiltrate licit supply chains.[43]

Tayur with Alvin E. Roth at White House Summit on Organ Donation (June 2016)

Healthcare Operations and Policy. At Allegheny General Hospital, Tayur has conducted clinical trials that have established the clinical benefits of genotype guided therapeutic dosing of warfarin therapy.[14] Tayur's work with Dr. Bennet Omalu, whose discovery of chronic traumatic encephalopathy (CTE) was featured in the movie Concussion,[44] applies OM methods to improve Medical Examiner Offices.[45] In the area of long-term care, Tayur has examined ways to improve the consistency of staffing and proposed an "on-call pool" approach.[46] With transplant surgeons at Massachusetts General Hospital, Tayur has analyzed liver allocation rules to better balance equity and efficiency between HCC patients and non-HCC patients.[47]

To address the fundamental problem of scarcity of supply of organs, Tayur collaborates with the New Jersey Sharing Network, part of the United Network for Organ Sharing, investigating behavioral economic approaches that will increase the consent rate of the legal next-of-kin of deceased individuals. This work attracted the attention of the White House Office of Science and Technology Policy[48][49] and was featured in the 24th Association for Multicultural Affairs in Transplantation Annual Meeting in 2016.[50] Tayur also supports finding other innovative methods to increase organ donation and supports the need for clarification to be able to conduct further research. Tayur has also engaged other researchers, transplant surgeons, and policy bodies, as well as students, by serving on the organizing committee of the 2016 Johns Hopkins Symposium on Healthcare Operations, with a theme of "When Organ Transplantation meets Operations Research," and by speaking on "Effective and Innovative Solutions to Increase Organ Donation" at the Harvard Effective Altruist Chapter.[51]

In addition to his applied work, Tayur has adopted a strategic queueing approach to investigate (1) physicians' diagnostic test-ordering behavior in outpatient settings[52] and (2) the effect of multi-listing—powered by affordable jet services (OrganJet)—on U.S. organ transplantation candidates' life expectancy and organ wastage.[53]

New Business Models. Tayur's research has analyzed new business models such as scheduling of fractional jets,[54][55] online rental models,[56] dynamic scheduling of advertisements in video games,[20] and an entrepreneurial approach to the widespread adoption of multiple listing for organ transplantation.[53][57]

Books

A group of operations management scholars met to celebrate the Handbook of Healthcare Analytics at the 2017 MSOM Annual Meeting held at University of North Carolina at Chapel Hill (June 2017).

Tayur's co-edited volume Quantitative Models for Supply Chain Management (Springer,1999), is among the most popular reference books on supply chain modeling.[58] Another, Handbook of Healthcare Analytics: Theoretical Minimum for Conducting 21st Century Research on Healthcare Operations (John Wiley & Sons, 2018), covers a wide scope of contemporary topics and provides timely access to modern analytical tools;[59] the handbook is an "important volume" that "represents some of the brightest minds in analytics research, as well as physicians and senior healthcare executives."[60]

Teaching

Tayur has won various undergraduate and MBA teaching awards, including the George Leland Bach Excellence in Teaching Award. One of Tayur's teaching cases entitled “Managing Operations in the Time-Shared Jet Business," won First Prize for the INFORMS Teaching Case Award in 2000, and another, "Patient Experience Improvement at UPMC Eye Center," won Second Prize for the same award in 2012. In his chapter on "Operations Management MBA Teaching in 21st Century Business Schools,"[61] Tayur identifies five shared shortcomings between the “Harvard approach” (case study) and “Carnegie approach” (mathematical models), suggesting a way to build on the best of both. He also notes entrepreneurship (including social enterprises) and the increased number of female MBAs as two important topics that need to be addressed more centrally in MBA education, with a goal of achieving the "higher aims" of management education beyond creating just another generation of "hired hands."

Tayur has also taught in executive education programs for various companies, including McKinsey & Company, Cisco Systems, and Schibsted.

Recognitions

Tayur was named one of the four “Masters of Supply-Chain Efficiency” by Fortune Magazine,[62] and a “Most Popular Professor” by BusinessWeek.[63] He has been ranked as one of the stellar operations management researchers.[64]

In 2012, Tayur was elected as a fellow of INFORMS for his lifetime achievements in “research on inventories and supply chain management, and developing new methodologies, implementing solutions in manufacturing, logistics and supply chains, and creating a market for enterprise inventory optimization software.” [65][note 1]

In 2017, Tayur was elected as a Distinguished Fellow of MSOM. In the same year, he was elected as a Member of the National Academy of Engineering for "developing and commercializing innovative methods to optimize supply chain systems."[66]

Awards

In the field of Healthcare Management, Tayur's paper "Imaging Room and Beyond: The Underlying Economics Behind Physicians’ Test-Ordering Behavior in Outpatient Services" won First Place in the 2012 Production and Operations Management Society (POMS) College of Healthcare Operations Management’s Best Paper Competition.[67] In 2015, he won the Pierskalla Award for Best Paper in Healthcare from INFORMS, for his paper, "OrganJet: Overcoming geographical disparities in access to deceased donor kidneys in the United States."[68]

His work with John Deere[69]—which reduced over $1B in inventory in just four years[70]—was a finalist for the Edelman Prize. His PhD students have won a number of awards, including the George Nicholson Prize in 1996 and the George B. Dantzig Dissertation Award in 2011.

Tayur's work on integer programming using Gröbner basis [28] was a finalist for the Frederick W. Lanchester Prize.

In 2018, Tayur was chosen by Indian Institute of Technology Madras as a recipient of the 2018 Distinguished Alumni Awards (DAA).[71][72][73]

“Academic Capitalist”

As a serial entrepreneur and an active promoter of monetizing Operations Research,[18] Tayur coined the term “academic capitalist.”[74][75][note 2] He is an investor in and member of the advisory boards of MitraBiotech,[76] NeoTribe Ventures,[77] Onera, VocaliD,[78][79] and Zenrez, and serves on the board of Transplant Interface.[80] He was a member of the board of directors of Orchestro,[81] a software-as-a-service based analytics platform that was later acquired by E2open.[82] Tayur is also a charter member of The Indus Entrepreneurs (TiE),[83] and has served as a mentor for TiE ScaleUp.[84] He was a member of the advisory board and a limited partner of CCG Inc. (2001-2010),[18] a private equity firm devoted to applying lean manufacturing techniques at small manufacturing firms and creating new jobs.

SmartOps

In 2000, Tayur founded the software company SmartOps Corporation,[85] after winning the First Prize in the EnterPrize Case Competition that year,[86] and served as its CEO until 2012. The company raised Series A funding within 45 days, became profitable in 2003, and has experienced revenue growth every year since its inception.[87]

Through SmartOps, Tayur also coined the phrase "fix the mix" to refer to the approach of adjusting inventory levels for various items to meet target service levels with lower overall inventory investment.[88] Several SmartOps customers, including Cabot Corporation, Celestica,[89] ConAgra, Dow Chemical Company, Johnson & Johnson,[90] Kohler Company, Lubrizol, LSI Corporation, Medtronic, PPG Industries,[91] Wyeth, have spoken about their successes with Enterprise Inventory Optimization (EIO).

SmartOps was in a revenue sharing contract agreement with SAP AG, until February 2013, when SAP AG announced that it would acquire SmartOps to "develop 'real-time supply chain' software solutions, leveraging the SAP HANA platform, which empowers customers to run their businesses in real time—to analyze, predict, react and adjust instantly."[92][93][94] Leveraging this acquisition, SAP has offered an "SAP Integrated Business Planning for Inventory" solution, allowing its clients to "manage the increased supply chain risk due to economic uncertainty, escalating customer expectations, demand volatility, and supply variability they face."[95]

Tayur has been recognized for his entrepreneurship of SmartOps Corporation by the Carnegie Science Center Award for Innovation in Information Technology,[96] and has been the subject of University of Virginia Darden School of Business's MBA Teaching case “SmartOps Corporation: Forging Smart Alliances?”[97]

OrganJet

In 2011, Tayur founded the social enterprise OrganJet Corporation, which facilities multiple listing and provides on-demand private jet transportation solutions for patients to receive organ transplantation in a wider geographic range.[98][57]

Since the founding of OrganJet, Tayur's "entrepreneurial approach to reform [the] organ waiting list" has caught the attention of Nobel Laureate Alvin E. Roth, among other preeminent economists.[57][99] In addition, OrganJet has been covered by the AOL/MAKERS initiative[100] and by the media in regions suffering from geographic disparity in waiting times for organ transplants, such as Boston,[101] Denver,[102] and Wisconsin.[103]

On August 7, 2013, it was announced that Irena Bucci, a resident of the Washington D.C. area, through the service provided by OrganJet, successfully received a kidney transplant in Pittsburgh, through the service provided by OrganJet.[104]

Tayur with Amartya Sen at Harvard Square (May 2016)

On August 20, 2013, OrganJet released a free self-service App to help chronic kidney disease patients find a low wait kidney transplant center in the US.[105]

In June 2014, OrganJet sponsored a “Transplants” campaign with Mediaplanet and USA Today aiming to increase the public's awareness of the importance of organ donation.[106]

A 2014 piece in The Atlantic, "A Private Jet Is Waiting to Take You to Your Kidney Transplant" detailed Tayur's motivation behind founding OrganJet and the company's latest developments.[1] In discussing geographic inequality in organ transplantation, a 2014 The New England Journal of Medicine article cited OrganJet as an example of mobilizing the recipients (instead of mobilizing the organs) that would face less of the "political resistance that has stood in the way of broader organ sharing to date."[107] The American Journal of Transplantation, in its February 2015 issue of "The AJT Report," mentioned Tayur and his work through OrganJet as one of "grassroots groups and organizations formed to improve the quality of life for transplant candidates, recipients, their families, and the families of organ and tissue donors."[108] Tayur and OrganJet have also been profiled in The Craft of Creativity,[26] Ars Technica,[109] Forbes,[110][111][112] and Vice News.[113]

OrganJet has been featured in research seminars in leading universities, including Cornell University, Harvard University, MIT, Stanford University,[114] and University of Chicago.[115] OrganJet has also been featured at Harvard Kennedy School's 2016 New World Social Enterprise Fellows Program,[116] where Tayur showcased OrganJet as an operational example of John Rawls's difference principle, as well as at 2017's Leadership for System Change: Delivering Social Impact at Scale Program with 40 Schwab Fellows.[117]

“Management mechanics”

Tayur posing in a Caterpillar attachment whose supply chain he designed (1998)[62][118]

In line with Herbert A. Simon's reflection that “executive centrifuges” are needed for a science of “judgment mechanics,”[119] Tayur proposed the term "management mechanics,"[120] a methodical way to conduct quantitative-model-based "management consulting" that also allows for systematic implementation of sustaintable organizational change using enterprise information technology. A wide range of "what if" analysis allows senior executives to tackle practical problems in operations management (PPOMs) in the spirit of Peter Drucker's views on Management Science.[121]

PPOMs can lie "inside the factory," "outside the factory," or in the "interfaces between the inside and the outside of the factory."[122] PPOMs in product companies (across a variety of industries) include designing rapid response supply chains,[118] optimizing product portfolios,[123] implementing a postponement strategy,[39] planning production with significant changeover times and costs,[124] reducing net landed cost in procurement,[125] optimizing working capital needs to meet service levels,[69] operating a global supply chain using S&OP process,[126] quoting accurate lead times,[127] and designing a seasonal logistics strategy through a gain sharing contract.[128] Management Mechanics helps executives make sound judgements on strategic decisions that may span multiple organizational silos in their firm or even cross firm boundaries.

In 1999, Tayur coined the term "planned spontaneity"[129] to describe firms' supply-side strategy to create and respond to consumer demands spontaneously. The term has now been used to describe a new wave of technology enterprises aiming to satisfy last-minute consumer demands.[130]

Pioneering a contract hybrid (OrganJet and GuardianWings)

In July 2012, OrganJet and GuardianWings became the first social enterprise to have a “contract hybrid,” in which a for-profit entity (OrganJet) is symbiotically integrated with a not-for-profit subsidiary (GuardianWings) sharing a common social mission of providing inclusive access to organ transplantation. [131] [132]

The notion of “Contract Hybrids,” as a new legal entity, was first proposed by Bromberger [133] as a method to obtain the best of “for-profit” and “not-for-profit” entities, and further explored by Battilana et al.[134] A 2013 Harvard Business School case titled "OrganJet and GuardianWings" (by Julie Battilana and James Weber) covers the decision process behind the organizational structure of OrganJet and GuardianWings.[5] The case has been used by University of Michigan's Ross School of Business, among other business schools, in its course "The Corporation in Society," where Tayur was interviewed by the instructor Jim Walsh.[135] Students were asked to write responses to the question "If you were Sridhar Tayur, how do you think about your aspirations to establish OrganJet and GuardianWings, change the current transplant system in America, honor your commitments to Carnegie-Mellon University, and live a full life?" [136]

In an interview with The Guardian, Tayur said that the hybrid model was more efficient than a traditional pure for-profit or not-for-profit: "It would have been much easier for me to have said it's a not-for-profit or a for-profit and satisfy the skeptics. But the primary goal of my company is to help as many people as possible get transplants quicker."[23]

Deep computing

Through SmartOps, Tayur has also explored massively parallel versions of enterprise inventory optimization (EIO) algorithms on IBM's Blue Gene. In 2005, as Blue Gene's first supply chain application,[137] the IBM-SmartOps pilot solved industrial scale problems with more than a million variables in 0.04 seconds on a "half rack" system with 512 processors.[138]

Quantum computing

Tayur created the Quantum Group at Carnegie Mellon in 2017 to study optimization problems―motivated by operations research and operations management applications―by bringing ideas and methods from algebraic geometry, geometry of numbers and algebraic topology to quantum computing. The group has conducted numerical testing on D-Wave of their new hybrid quantum-classical algorithm to compute Graver basis, which is known to be useful in many applications of non-linear integer optimization and game theory.[139][140] Based on a novel algebraic geometry framing, the Quantum Group is also developing a “Translator API” that will make quantum hardware (based on Ising Spin Glass architecture, like D-Wave) more easily accessible to the optimization community. The group is also the first to introduce Morse theory (from algebraic topology) to understand adiabatic quantum computation better.

Speeches

Tayur at Asian Pacific American Heritage Month (May 2015)

Tayur was a plenary speaker for the 2007 INFORMS Conference,[141] the 2008 MSOM Conference,[74] the 2015 POMS Annual Meeting,[75][142] and the 2017 Annual Meeting of the Decision Sciences Institute.[143] He served as the commencement speaker for South Park High School in 2008, and for Heinz College at Carnegie Mellon University in 2009.[144] Tayur has been invited to speak at various major forums, including UCLA's Marschak Colloquium, and Harvard's Igniting Innovation Summit,[145] both in 2012. His 2013 speech at Brigham Young University was titled "The Unreasonable Effectiveness of Certain Mathematical Models in Practice,"[146][147] resembling Eugene Wigner's The Unreasonable Effectiveness of Mathematics in the Natural Sciences. In his supply chain thought leader plenary at MSOM 2014, he discussed "Management Mechanics" in his talk "Virtuous Cycle: From Problem Identification to On-going Value Creation."[148] Also in 2014, Tayur delivered a Bangs Lecture titled "OR/OM Entrepreneurship in the 21st Century" at Cornell University.[149][150] He also delivered a Leadership Lecture at IIT-Madras on “Academic Capitalism in the 21st Century.”[151]

Tayur has been invited to speak on organ transplantation at various high-profile venues, including the 2016 Johns Hopkins Symposium on Healthcare Operations and the 2016 Association for Multicultural Affairs in Transplantation (AMAT) Annual Conference.

In April 2018, Tayur gave a speech on "Moonshot: Quantum Computing" during Carnegie Mellon's Alumni Reunion Weekend.[152]

Tayur has been a guest speaker for undergraduate, MBA, and MS courses at several universities including Harvard Business School, Cornell University (Engineering), MIT (both Sloan and Engineering Schools), University of Virginia Darden School of Business, and University of Michigan's Ross School of Business. In 2017, he delivered the lecture "What is Business?" to the MBA Class of 2019 at the Tepper School of Business.[153] He was a speaker for TiE StartupCon.[83] In addition to delivering speeches on research, entrepreneurship, and applications, Tayur speaks and writes about the importance and strategy of preparing business faculty for effective MBA teaching.[154] He has also participated in panels that discuss life and career success factors (including but not limited to immigrants and/or minorities), such as at a WGBH event celebrating Asian Heritage.[155]

Personal life

Tayur dodging a bullet along with Keanu Reeves in The Matrix (1999)

Tayur was born in Madras (now Chennai) in India to a Kannada-speaking family. His father was in the Indian Administrative Service. Tayur is married to Gunjan Kedia, and they have two sons. Tayur and Kedia supported Barack Obama in the 2008 Presidential election.[156]

An avid movie watcher, Tayur also enjoys attending film festivals and recreating scenes from his favorite movies with an added twist.

Philanthropy

Education. In April 2014, Carnegie Mellon University received a $1 million gift from Tayur and his wife Gunjan Kedia,[157] a Tepper alumna (MSIA ’94). This gift is was to help construct the Tepper Quadrangle that will house the new Tepper School of Business building.[158] In February 2016, Tayur launched a new Institute Chair at IIT Madras.[159][160]

Film. Tayur's charitable foundation, RAGS Family Foundation, was created to support various documentaries. The film Journey to Normal,[161] featured by The Shriver Report,[162] profiles several female veterans, including Christine Mau, who became the first woman to fly an F-35 Fighter Jet.[163] The foundation also supports Silk Screen Asian American Film Festival, one of the largest Asian film festivals in the U.S., including providing the funding for the annual People's Choice Award.[164][165][166][167][168] Through SmartOps in 2010 and the RAGS Foundation in 2013, Tayur supported "The American Revolution," a feature-length documentary film.[169][170] In 2018, he became an Executive Producer of the film.[171]

Tayur has also been a member of the Leadership Donor Group at the Brattle Film Foundation and a member of the advisory board of TrueSpark, a non-profit seeking to engage at-risk middle school youth using motion pictures.[172]

Public Television. Tayur served on the Board of Overseers and was a Ralph Lowell Society member of WGBH, in which capacity he helped bring organ donation topics to wide public awareness through the PBS-OZY collaboration late-night TV show, Point Taken.[173]

Medical Research. Since 2009, Tayur has funded neuroscience research in Dr. Beverly Davidson’s laboratory at Children's Hospital of Philadelphia (previously at University of Iowa) that utilizes RNA interference to find therapy for rare genetic disorders like SCA2. He has also supported Massachusetts General Hospital's organ transplantation research through sponsoring its "2015 Transplant Golf Classic" event.[174]

Other. Tayur has served as a policy advisor to the Polaris Project to counter human trafficking.[175] Tayur and his wife have also been long-time donors to Children International, Childreach International, CARE, Smile Train, and American Red Cross, and have supported microfinance through Kiva for several years. Through SmartOps, Tayur sponsored the 12th Social Enterprise Conference at Harvard Business School,[176] the MIT Sloan Annual Operations Simulation Competition in 2010 and 2011,[177] and the Els for Autism 2011 Golf Challenge.[178]

Quotes

From Matthew A. Cronin and Jeffrey Loewenstein’s 2018 book The Craft of Creativity:[26]

On the importance of “elegance in practical solutions”:

Elegance is not something that should be considered discretionary, but rather an intrinsic feature of a proposed solution. The tragedy in some academic circles is that they make elegance the "whole thing," losing sight of the problem to be solved, while the pragmatic sort do not have the luxury for aesthetic considerations. The intersection of elegance and effectiveness is the essential intellectual challenge.

On the impetus that led to the invention of “IPA derivatives for Inventories”:

If no one in the field [for 35 years] had been able to crack it with this approach [stochastic dynamic programming], what are the odds that one more guy is going to do it?... I thought there must be something wrong with that approach in itself... If not stochastic dynamic programming, then what?

From Daniela Lamas (Oct 29, 2014). "A Private Jet Is Waiting to Take You to Your Kidney Transplant" in The Atlantic:[1] On how doing “something new” is a joy in itself:

There's a certain self-satisfaction to being clever for its own sake. It has nothing to do whether you helped somebody or made money or got a prize. All of those things matter. But there’s this joy when you're sitting alone in your room and you say, “Aha! I thought about something in a new way.”

From the Harvard Business School Case OrganJet and GuardianWings:[5]

On why he created “OrganJet and GuardianWings”:

I like newness. It’s very important to me personally to do new things. I thought maybe my next act should be social enterprise because it was new to me, but I was a little unhappy that the social enterprise idea was already 12 years old. Then I discovered that having a for-profit operation generate funding for a non-profit organization providing the same service was quite new. So, is saving lives not good enough? I'm not saying it's not good enough. It is. Is managing logistics not good enough? It is. But doing both of those and creating a new form of social enterprise all in one? That's the trifecta.

Publications

Tayur has published more than 100 articles in peer-reviewed journals. According to Scopus, Tayur's 12 most widely-cited papers are (ordered chronologically):

  • Tayur, Sridhar (1993). "Structural Properties and a Heuristic for Kanban-Controlled Serial Lines". Management Science. 39 (11): 1347–1368. doi:10.1287/mnsc.39.11.1347.
  • Tayur, Sridhar (1993). "Computing the optimal policy for capacitated inventory models". Stochastic Models. 9 (4): 585–598. doi:10.1080/15326349308807282.
  • Glasserman, Paul; Tayur, Sridhar (1994). "The Stability of a Capacitated, Multi-Echelon Production-Inventory System Under a Base-Stock Policy". Operations Research. 42 (5): 913–925. doi:10.1287/opre.42.5.913.
  • Glasserman, Paul; Tayur, Sridhar (1995). "Sensitivity Analysis for Base-Stock Levels in Multiechelon Production-Inventory Systems". Management Science. 41 (2): 263. doi:10.1287/mnsc.41.2.263.
  • Kapuściński, Roman; Tayur, Sridhar (1998). "A Capacitated Production-Inventory Model with Periodic Demand". Operations Research. 46 (6): 899–911. CiteSeerX 10.1.1.34.8057. doi:10.1287/opre.46.6.899.
  • Swaminathan, Jayashankar; Tayur, Sridhar (1998). "Managing Broader Product Lines through Delayed Differentiation Using Vanilla Boxes". Management Science. 44 (12–Part–2): S161. CiteSeerX 10.1.1.53.4420. doi:10.1287/mnsc.44.12.S161.
  • Gavirneni, Srinagesh; Kapuscinski, Roman; Tayur, Sridhar (1999). "Value of Information in Capacitated Supply Chains". Management Science. 45 (1): 16–24. CiteSeerX 10.1.1.34.731. doi:10.1287/mnsc.45.1.16.
  • Keskinocak, Pinar; Tayur, Sridhar (2001). "Quantitative Analysis for Internet-Enabled Supply Chains". Interfaces. 31 (2): 70–89. CiteSeerX 10.1.1.201.9921. doi:10.1287/inte.31.2.70.10626.
  • Keskinocak, Pinar; Ravi, R.; Tayur, Sridhar (2001). "Scheduling and Reliable Lead-Time Quotation for Orders with Availability Intervals and Lead-Time Sensitive Revenues". Management Science. 47 (2): 264–279. doi:10.1287/mnsc.47.2.264.9836.
  • Dawande, Milind; Keskinocak, Pinar; Swaminathan, Jayashankar M; Tayur, Sridhar (2001). "On Bipartite and Multipartite Clique Problems". Journal of Algorithms. 41 (2): 388–403. doi:10.1006/jagm.2001.1199.
  • Swaminathan, Jayashankar; Tayur, Sridhar (2003). "Models for Supply Chains in E-Business". Management Science. 49 (10): 1387–1406. CiteSeerX 10.1.1.135.1689. doi:10.1287/mnsc.49.10.1387.17309.
  • Muckstadt, John; Tayur, Sridhar (2007). "A Comparison of Alternative Kanban Control Mechanisms. I. Background and Structural Results". IIE Transactions. 27 (2): 140–150. doi:10.1080/07408179508936726.

Recent journal articles:

  • Dai, Tinglong; Akan, Mustafa; Tayur, Sridhar (2017). "Imaging Room and Beyond: The Underlying Economics Behind Physicians' Test-Ordering Behavior in Outpatient Services". Manufacturing & Service Operations Management. 19 (1): 99–113. CiteSeerX 10.1.1.218.6563. doi:10.1287/msom.2016.0594.
  • Ata, Barış; Skaro, Anton; Tayur, Sridhar (2017). "OrganJet: Overcoming Geographical Disparities in Access to Deceased Donor Kidneys in the United States". Management Science. 63 (9): 2776–2794. doi:10.1287/mnsc.2016.2487.
  • Cho, Soo-Haeng; Fang, Xin; Tayur, Sridhar (2015). "Combating Strategic Counterfeiters in Licit and Illicit Supply Chains". Manufacturing & Service Operations Management. 17 (3): 273–289. CiteSeerX 10.1.1.1034.3665. doi:10.1287/msom.2015.0524.

Books:

  • Dai, Tinglong; Tayur, Sridhar, eds. (2018). Handbook of Healthcare Analytics: Theoretical Minimum for Conducting 21st Century Research on Healthcare Operations. John Wiley & Sons, Inc. ISBN 978-1-119-30094-6.
  • Tayur, Sridhar; Ganeshan, Ram; Magazine, Michael, eds. (1999). Quantitative Models for Supply Chain Management. Springer. ISBN 9780792383444.

Book chapters:

  • Dai, Tinglong; Tayur, Sridhar (2017). "The Evolutionary Trends of POM Research in Manufacturing". In Starr, M. K.; Gupta, S. K. The Routledge Companion to Production and Operations Management. London, U.K.: Routledge. pp. 647–662. ISBN 9781138919594.
  • Keskinocak, Pinar; Tayur, Sridhar (2004). "Due Date Management Policies". In Simchi-Levi, D.; Wu, D.; Shen, Z.-J. Handbook of Quantitative Supply Chain Analysis. International Series in Operations Research & Management Science. 74. pp. 485–554. CiteSeerX 10.1.1.207.722. doi:10.1007/978-1-4020-7953-5_12. ISBN 978-1-4757-1074-8. ISSN 0884-8289.
  • Kapuscinski, Roman; Tayur, Sridhar (1999). "Optimal Policies and Simulation-Based Optimization for Capacitated Production Inventory Systems". In Tayur, Sridhar; Ganeshan, Ram; Magazine, Michael. Quantitative Models for Supply Chain Management. International Series in Operations Research & Management Science. 17. pp. 7–40. doi:10.1007/978-1-4615-4949-9_2. ISBN 978-1-4613-7246-2. ISSN 0884-8289.

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Notes

  1. ↑ The importance of inventory control to economic productivity has been widely recognized, including by the Nobel-winning economist Paul Krugman, who states that, "The big productivity gains of the period from 1995 to 2005 came largely in things like inventory control" (See "The Big Meh", by Paul Krugman).
  2. ↑ "Academic Capitalist" is similar to "Scientific Entrepreneur" (See "The Scientific Life; A moral history of a late modern vocation", by Steven Shapin), and can be considered as a modern version of "craftsman-scholar" (See "The Lever of Riches; Technological Creativity and Economic Progress", by Joel Mokyr).
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