You can follow FBA’s monthly activities from the below list. The activities here are categorized as: ‘SEMINAR’, ‘THESIS DEFENSE’ and ‘OTHER’. For past seminars (between October 2010 & November 2017), please click here
Below list displays the seminars starting from December 2017 till TODAY
“Towards Collaborative Behavioral Intentions in M&A Integration”
by Professor Dr. Niels Noorderhaven
Tilburg School of Economics and Management – Department of Management
Theoretical insights into factors influencing the success of large-scale organizational change are scarce. We explore such change in the context of post-acquisition integration, where success hinges on realizing synergies while maintaining positive attitudes and behaviors of employees. We conduct an in-depth inductive study of the integration of an acquired firm to develop theory pertaining to the question how task integration management and human integration management lead to intergroup interaction processes that either engender or impede the development of organizational members’ collaborative behavioral intentions. Our study advances the M&A literature by revealing the crucial role of intergroup interaction processes. More generally, our study articulates the roles played by task-oriented and human-oriented interventions in large-scale organizational change.
“ Strategic Customers in Systems with Batch Arrivals: How Much You Can Protect Your Party ”
by Dr. Olga Bountali
Southern Methodist University – Department of Engineering Management, Information, and Systems
Customers who arrive in groups at a service or production system but are served individually are faced with a convoluted manifestation of the \ join-balk” dilemma when they try to balance the payoff obtained from service with the costs caused by waiting in the queue: if they are bound to join or balk as a group, then some of them may be forced to join so that the net benefit of the entire group is maximized. On the other hand, if separate customer entrances are allowed, then their individual interest plays the major role in their decision. In this sense, when all arriving groups act strategically, it is of interest to predict the resulting join-balk strategies under equilibrium in both cases, as well as their differences in system performance, customer throughput, total customer welfare, etc. We consider these questions in the framework of a single server Markovian queue with batch arrivals and random batch sizes. We explicitly consider two cases with respect to the entrance decision rules: the 0-1 case, in which the entire batch (i.e., all its customers) decides to either join or balk, and the partial case, where the batch is allowed to join partially (i.e., only a fraction of the customers decides to join). We analyze and compare how the customers behave in equilibrium under both rules and the corresponding implications on the social welfare.
“CEO Incentives and Bank Risk over the Business Cycle”
by Tanseli Savaşer
Assistant Professor of Finance – Faculty of Business Administration
Due to government guarantees provided to financial firms, bank shareholders have a natural preference for risky lending, taking excessive risks at the expense of debt holders and taxpayers (risk shifting). We propose and test a joint hypothesis that these risk-shifting incentives become more prominent as economic conditions deteriorate and that shareholder’s increased risk appetite leads to a stronger relationship between managerial risk-taking incentives and bank risk in a contracting economy. Consistent with this hypothesis, we find that the same level of pay-for-risk incentives given to a CEO leads to higher bank risk during economic downturns. This is because shareholders’ increased risk preference is passed on to the manager (through stock-based compensation) increasing the sensitivity of bank risk to CEO pay-for-risk incentives. Our results suggest that holding sufficiently high amount of bank capital limits this effect, making the CEO compensation-bank risk relationship less sensitive to the underlying macroeconomic environment.
“Show Us Your Shorts!”
by Bige Kahraman Alper
Oxford Said Business School
What is the impact of greater publicity in the shorting market on informational efficiency? To answer this, we exploit rule amendments in U.S. securities markets which increased the frequency of public disclosure of short interest. Greater publicity can potentially improve or deteriorate informational efficiency. We find that with more frequent disclosure, short-sellers’ private information is incorporated into prices faster, improving informational efficiency. We also document significant market reactions to short interest announcements, suggesting investor learning, and furthermore, increases in short-sellers’ returns and reductions in their holding periods.
“Occupational Specialization, Job Mobility, and Transition to Self-Employment”
by Görkem Aksaray
Emory University – Organization & Management
Some occupations are prevalent across a wider range of industries than others. This paper compares how occupational specialization by industry affects the mobility of workers within and across industries. Empirical results suggest that occupational specialization increases the probability of finding a job in the same industry while hurting chances of changing industries after involuntary termination. However, it increases the probability of voluntarily transitioning to self-employment in another industry. These findings provide support for self-employment as a mechanism for overcoming structural barriers to inter-industry mobility.
“Access to Public Capital Markets and Employment Growth”
by Merih Sevilir
Indiana University – Kelley School of Business
We use the context of initial public offerings (IPOs) as a laboratory to examine the link between access to public capital markets, and the consequent relaxation of the financial constraints of firms, and their long-term employment decisions. To address endogeneity issues, we use a novel data set of private firms and investigate employment growth in IPO firms relative to two control groups: First, a matched sample of private firms that never file for an IPO, and second, a group of private firms that file for an IPO but eventually withdraw their offering due to exogenous reasons. We show that employment growth increases after going public relative to each control group and the effect of access to public capital markets on human capital investment is not temporary but more persistent. The most likely channel for the observed employment dynamics is relaxation of financial constraints, allowing newly public firms to access both equity and debt markets for funding investment in human capital. Overall, these results highlight the importance of public capital markets for job creation over long-term horizons.
“Sustainability transitions: Learnings from demand and supply side perspectives”
by Emrah Karakaya
KTH Royal Institute of Technology – Industrial Economics and Management
How do innovations diffuse in societies and organizations? How do sustainability transitions of industries happen? In order to shed some lights on these fundamental questions, this seminar aims at bringing insights from different theoretical perspectives. To do so, first, the seminar provides a brief overview of diffusion of innovations theory (Hägerstrand 1967; Rogers 1962), which is a demand-side perspective, and technological innovation systems approach (Carlsson and Stankiewicz 1991; Hekkert et al. 2007), which has a supply-side focus. Second, it discusses two distinct empirical cases. The first case focuses on the diffusion of solar photovoltaic systems among households in Germany while the second case explains the story of a hydrogen based technology in iron and steel industry in Sweden. By doing so, the seminar tries to create an opportunity the discuss the dynamics behind transitions towards more sustainable production and consumption.
“The Role of Complexity in Supply Chain Contract and Parameter Selection”
by Dr. Özge Tuncel
PhD Singapore University Singapore University of Technology and Design (SUTD) – Industrial Engineering and Operations Management
It has been established in the prior literature that human subjects fail to optimize parameters for two-parameter efficient/coordinating contracts, such as the buyback and revenue-sharing contracts, due to their complexity or cognitive burden. However, they can optimize the inefficient single-parameter wholesale price contract. Therefore, there is a trade-off between using efficient but complex contracts, and using simpler but inefficient contracts. We set out to identify whether the minimum order quantity (MOQ) contract, often used in business-to-business settings, can mitigate the tradeoff by inducing less cognitive burden than other coordinating contracts. We find that (i) subjects perform significantly better with the MOQ contract compared to other coordinating contracts, both in terms of supply chain performance and their own payoff; (ii) the MOQ contract induces lower cognitive burden than other coordinating contracts; (iii) cognitive burden associated with more complex contracts can be reduced with tools that are designed to lessen complexity and with learning; (iv) when given a choice, subjects choose the MOQ contract more frequently over other types of contracts and they favor the MOQ contract even more as they learn more about the contacts.
“Utilizing Management Technology Advantages in Cross-Border Acquisitions”
by Tolga Demir
Stockholm School of Economics – PhD in Finance
A growing literature documents that management quality accounts for an important portion of the differences in productivity across firms and countries. One route through which management practices could affect productivity is through mergers and acquisitions. In this paper, I investigate the role of management quality on cross- border acquisition activities and outcomes. I find that cross-border deal volume is positively associated with management quality differences across countries and firms. Firms with better management practices are more likely to be the acquirers. Acquisition premia paid to the target are positively related to the difference in management quality between the acquirer and target firms. Managers of the target firm are more likely to quit when the acquiring firm has better management practices. Lastly, target firms are less likely to be divested post-acquisition when acquirer firms have better management practices. My results indicate that management as a strategic intangible asset plays an important role in the cross-border acquisition plans, activities and outcomes.
“Optimal Monetary Policy under Recursive Preferences and the Term Structure of Equity and Bond Risk Premia”
by Atanu Kumar Paul
Carneige Mellon University, Ph.D. Finance
I build a New Keynesian asset pricing model with optimal monetary policy and Epstein-Zin preferences that accounts for some of the stylized facts concerning the term structures of equity and bond risk premia. The model-implied term structure of equity risk premia and its volatility are downward sloping, the term structure of bond risk premia is upward sloping, and the term structure of Sharpe ratios on dividend strips is downward sloping. Under Epstein-Zin preferences, the central bank amplifies short- and long-run productivity shocks to maximize surprise utility in an optimal monetary policy setting by making the output gap procyclical with respect to these shocks. The output gap gradually falls after a positive short- or long-run productivity shock so short-horizon output and dividends are more procyclical than medium-horizon output and dividends. Under the optimal monetary policy, the weight on the difference between inflation and its target in the loss function is large so inflation closely tracks the inflation target, which is persistent and responds negatively to long-run productivity shocks. This makes long-horizon price levels more countercyclical than short-horizon price levels with respect to the long-run productivity shock.
“Variance Dynamics in Term Structure Models”
by Çisil Sarısoy
Kellogg School of Management, Ph.D in Finance
I design a novel specification test for diagnosing the adequacy of affine term structure models to describe the observed yield variance dynamics, and derive the associated limit theory necessary for carrying out the test. The test statistic utilizes model–free estimators of instantaneous variances based on intraday data as well as model-free prices of variance swaps. Hence, it enables a direct testing of variance dynamics, independent of any specific modeling assumptions. I implement the test statistic in Eurodollar futures and options markets and find that affine term structure models cannot accommodate the yield variance dynamics observed in the data, especially during the crisis period of 2008–2010. However, a logarithmic affine specification of variances provides a remarkably improved fit.
“An Experimental Study of Newsvendor Decisions under Incomplete Information”
by Ayşe Kocabıyıkoğlu
Sabanci University, Ph.D in Management
We present an experimental study of newsvendor decisions under incomplete information. We observe that orders deviate from normative benchmarks when decision makers have incomplete information, and this tendency is stronger when information about the demand distribution is not available. This pattern is reflected in profits: subjects capture at most 81% of earnings they could have incurred if they ordered the normative quantity in high-margin settings; the corresponding percentage is 50% in low-margin settings. Our results also suggest decision variability is not affected by the type or amount of information available. Comparison with benchmarks with full and no information reveal, when the underlying demand distribution is not known, the availability of price and cost information significantly improves decisions, whereas when demand information is available, not knowing price or cost does not hurt decisions. We also consider the impact of information on profits; in our study the improvement in profits with any type of information (price, cost, demand) depends on the information set available to the decision maker, and more information does not necessarily lead to better performance.
“Market Formation, Emotional Economy, and Politics: Kurdish Music Casettes”
by Prof. Dr. Güliz Ger & Dr. Alev P. Kuruoğlu
Bilkent University & Southern Denmark University
We will present the theoretical development of our published article titled “An emotional economy of mundane objects” and then, very briefly, Alev’s yet-unpublished article on market formation and politics, both of which were based on the same fieldwork. Our published article illuminates the affective potentialities of objects. We examine the circulation of Kurdish music cassettes in Turkey during the restrictive and strife-laden period of the 1970s, 1980s, and 1990s. We find that the practices comprising circulation – recording, hiding, playing, and exchanging cassettes – constituted tactical resistance and generated communal imaginaries. We illuminate the “emotional economy” that is animated by a mundane object: the cassette, through its circulation, becomes saturated with emotions, establishes shared emotional repertoires, and habituates individuals and collectives into common emotional dispositions. Cassettes thus play a part in shaping and reinforcing an emotional habitus that accompanies the emergence of a sense of “us,” the delineation of the “other,” and the relationship between the two. The article thus demonstrates the entwinement of materiality and emotions and how this entwinement generates emotional structures that shape and perpetuate the imagining of community as well as the enactment of resistance. We will end with the to-be-revised article which moves from the above pre-market dynamics to market formation.
“Did Europe Move in the Right Direction on E-Waste Legislation?”
by Shumail Mazahir Muhammad
Ph.D. in Management – HEC Paris, France
This paper presents an analytical framework of the product take back legislation in the context of product reuse. We characterize existing and proposed forms of E-waste legislation and compare their environmental and economic performance. Using stylized models, we analyze an OEM’s decision about new and remanufactured product quantity in response to the legislative mechanism. We focus on the 2012 waste electrical and electronic equipment directive in Europe, where the policy-makers intended to create additional incentives for the product reuse. Through a comparison to the original 2002 version of the directive, we find that these incentives translate into improved environmental outcomes only for a limited set of products. We also study a proposed policy that advocates a separate target for the product reuse. Our analysis reveals that from an environmental standpoint, the recast version is always dominated either by the original policy or by the one that advocates a separate target for the product reuse. We show that the benefits of a separate reuse target scheme can be fully replicated with the aid of fiscal levers. Our main message is that there cannot be a single best environmental policy that is suitable for all products. Therefore, the consideration of product attributes is essential in identification of the most appropriate policy tool. This can be done either by the implementation of different policies on each product category or by implementation of product based target levels.
“ADVERTISING’S LONG-TERM IMPACT ON BRAND PRICE ELASTICITY ACROSS BRANDS AND CATEGORIES”
by Assoc. Prof. Berk Ataman
Koç University Faculty of Economics and Administrative Sciences – Marketing
Advertising often aims at creating and reinforcing brand differentiation, which should translate into reduced price competition. But to what extent does it do so, what is the route through which this effect of advertising materializes, and what are the boundary conditions? The authors develop a Hierarchical Dynamic Linear Model that links advertising to brand price elasticity directly and indirectly through consideration and preference mindset metrics. The model accommodates dynamic dependencies in mindset metrics and explains cross-sectional variation as a function of brand and category characteristics. Model estimation on six and a half years of data for 350 brands in 39 categories shows that advertising decreases price elasticity for the average brand, both directly and indirectly, mainly through consideration. The effect through main brand preference is much smaller. The decrease in price elasticity is more pronounced for less expensive and low-quality brands and in complex and frequently purchased product categories. Monetary gains from this increased pricing power are especially pronounced for expensive brands in complex and frequently purchased categories. The findings thus help managers demonstrate the benefits of advertising in sustaining brand performance.
“A profit-maximization location-capacity model for designing a service system with risk of service interruptions”
by Pooya Hoseinpour
Ph.D. in Industrial Engineering & Management Systems – McGill University
This paper considers the design of an immobile service system in which each facility’s service process is subject to the risk of interruptions. The location-capacity decisions and allocations are simultaneously made to maximize the difference between the service provider’s profit and the sum of customers’ transportation and waiting costs. An efficient Lagrangian-based solution algorithm is developed, which solves large-sized instances with up to 50 service facilities and 500 customers in a few seconds. Several sensitivity analyses and managerial insights are presented. The model is also applied to a case study on a logistics network design problem in the zinc mining industry.
‘No Shelter from the Storm? Hurricane Sandy and Commercial Real Estate Values’
by Erkan Yönder
Ph.D. in Finance, Maastricht University
We use micro-level data to study how investors price hurricane risk in the US commercial real estate market. Using Hurricane Sandy as a natural experiment, we find that properties exposed to hurricane risk experience 4 to 21 percent lower price appreciation post-Sandy as compared to their pre-Sandy counterparts matched on locational hurricane risk exposure. This price effect dissipates over time but, in the cross-section, it extends beyond areas immediately affected by the disaster to similar locations that have not yet experienced a hurricane strike, such as Massachusetts. We also document that the price effect of hurricane risk operates through mainly discount rates. Lastly, we present evidence for contagion effects from locally important occupiers adversely affected by Sandy to the value of unrelated properties nearby. A placebo test for Chicago confirms our results.
“Equity Crowdfunding Opportunities among Start-up Companies”
by Betül Açıkgöz
Assistant Professor of Accounting – Bozok University,
Faculty of Economics and Administrative Sciences
The startup companies who need financial sources usually apply credits, subsidies or grants from government agencies, angel investors or joint ventures. Crowdfunding is a kind of financial support from masses to accomplish a project such as an audio album, a software program, a social responsibility movement or a product design. This could be in the form of a reward, charity activity, equity or debt. Equity crowdfunding is a recent method to finance the operations of newly established startup companies. Startup companies who have bright ideas but lacking of funds to carry out their projects are in need of financial sources. To clear away the financial challenges, equity crowdfunding provides little amounts of funds from a number of investors. In this kind of financing, the financial institutions such as banks are eliminated. The creditor and the startup company meets on the internet platform. Although it is a very new application in Turkey, the crowdfunding is of very broad use in the US and Europe. This study aims to measure of perceptions of startup companies about the crowdfunding and the contribution on the new investments.
“What has driven the expansion of the peer-to-peer lending”
by Prof. Olena Havrylchyk
University of Paris Panthéon-Sorbonne
Peer-to-peer (P2P) lending platforms are online intermediaries that match lenders with borrowers. We use data from the two leading P2P lending platforms on the US consumer credit market, Prosper and Lending Club, to explore the main drivers of the expansion of demand for P2P credit. We exploit the heterogeneity in local credit markets at the county level to test three main hypotheses: 1) global financial crisis; 2) competition and barriers to entry; and 3) learning costs. We find that P2P lending platforms have partly substituted for banks in counties that were more affected by the financial crisis. High market concentration and high branch density appear to deter the entry and expansion of the P2P lending. Finally, we find a positive impact of variables that are correlated with lower learning costs, such as education, population density, high share of young population, as well as important spatial interactions.
“Understanding Anomalies Using Insider Trading”
by Prof. Dr. Nejat Seyhun
Ph.D. in Finance, University of Rochester
Many studies show that future stock returns are predictable. These findings are consistent with either mispricing or risk. We use a large backward-extended insider trading database from 1975 to 2014 to construct anomaly-specific measures of mispricing that are designed to be unrelated to risk. We find mispricing is corrected shortly after insider trading becomes public when the direction of insider trading agrees with the anomaly. Mispricing completely disappears when the direction of insider trading disagrees with the anomaly, and mispricing is modest when there is no insider trading. We conclude that mispricing is an important component of the predictive ability of all thirteen anomalies we consider. Our evidence also indicates that insiders improve market efficiency through information not only about mispricing itself, but also about when mispricing will be corrected.
“City Logistics Systems”
by Prof. Dr. Haldun Süral
We provide an overview of challenges appeared in the real-life applications of City logistics (CL) systems and CL studies in the literature. Coordination of stakeholders and consolidation of goods are the key elements of CL. Consolidation takes place at city distribution centers (CDC). Freight arrives to CDC through diﬀerent modes. Goods are processed and consolidated based on demands and are dispatched to be distributed to the customers. This is how the single-echelon systems work. In the multi-echelon systems, there are satellites between CDCs and customers and goods of the higher echelon vehicles are trans-docked to the next echelon vehicles without staging. Varieties of CL freight systems and some analytic results will be presented.
“Institutions’ Investment Horizon, Herding, and long Term Returns”
by M.Sabeeh Iqbal
Ph.D Candidate, Bilkent University
The financial institutions have the tendency to herd but their herding may be informational or behavioral depending upon the type of institutions. Short horizon institutions trade on superior information unlike long horizon institutions which trade on stale information (or behavioral reasons). Therefore, herding by different institutions have different price implications for securities. We find that herding by long horizon institutions is negatively related to long horizon returns and herding by short horizon institutions have insignificant impact on long horizon returns. Our results are robust to various control variables which are known to affect returns, to sub-periods, and to use of returns of different horizons as dependent variable. These evidence suggest that short/long horizon institutions’ herding is informational/behavioral.
“Optimal Procurement from Multiple Contracts in Agricultural Processing: Implications for Biomass Commercialization”
by Assoc. Prof. Onur Boyabatlı
Singapore Management University
This paper examines the procurement strategy of an agricultural processor that sources a commodity input from two quantity-flexibility contracts to produce a commodity output and a byproduct in the presence of input and output spot price uncertainties. We characterize the optimal procurement volume from these contracts (and the subsequent processing, input spot procurement, output spot transactions) and perform sensitivity analysis to investigate how spot price correlation affects the processor’s optimal procurement strategy and profitability. We show that, in contrast to the common understanding in the literature that comes from studies that ignore contract procurement, a higher spot price correlation increases the processor’s profitability in the presence of contract procurement. Using our modeling framework, we also examine the impact of commercializing byproduct as biomass on the procurement strategy and profitability of the processor. While the processor optimally procures only from a single contract (single-sourcing) before the biomass commercialization, the processor may optimally source from two contracts (dual-sourcing) after the commercialization. Using a calibration based on the palm industry, we show that failing to update procurement strategy after commercialization leads to a significant profit loss, and this profit loss is higher when biomass demand is sufficiently high. To understand the environmental implications of biomass commercialization, we characterize the expected greenhouse gas (GHG) emissions of the processor—which is new to the literature—and examine how commercialization affects the expected GHG emissions.
“RHETORICAL INVESTIGATION OF MANAGERIAL LEGITIMATIONS: STUDYING ARGUMENTS ON ALLEGEDLY UNFAIR CAREER ADVANCEMENT DECISIONS”
by Rasim Serdar Kurdoğlu
University of Leicester
This present study offers a new theoretical view on organisational justice, and then empirically applies it to study fairness of career advancement decisions in organizations. Theoretically, it challenges the concept of procedural justice in organizations by drawing on Hayek’s liberal justice theory. It then introduces a new understanding of interactional justice derived from Perelman and his colleague’s argumentation theory. Accordingly, eristic modes of legitimations (preposterous reasoning to win the argument) are considered to be a breach of interactional justice, which is crucial to enable economic exchanges without deception. For applying these theoretical views in an empirical investigation, 15 interviews were conducted with former employees who claimed that their promotions were denied unfairly. In addition, 21 interviews were conducted with HRM professionals to elicit their general views on career advancement decisions. The consequent rhetorical analysis indicates that raising unfairness concerns can be futile and destructive when managerial authorities are in eristic mode of discussion which instigates malevolent political strives within organizations. Breach of interactional justice is found to be conducive to various inefficiencies for organizations as well as for individual careers.
“Managing Capital Market Frictions via Cost-Reduction Investments”
by Fehmi Tanrısever
Bilkent University – Faculty of Business Administration
Problem definition: We examine how the presence of capital market frictions influences the decision to invest in production cost reduction and the resulting production volume. This investment can increase the firm’s cash flow by increasing the profit margin, but it can also decrease the firm’s risk-free cash reserves and thus affect its exposure to capital market frictions.
Academic / Practical Relevance: Process improvement aimed at production cost reduction has generated myriad of theoretical questions about efficient investment options and capacity choices. From a managerial perspective, process improvement is a fundamental concern in operations strategy. Nevertheless, its analysis typically excludes financial constraints by assuming a perfect capital market.
Methodology: We formulate a two-stage profit maximization model in which a capital-constrained firm commits to a cost-reduction investment in the first stage in anticipation of its production decision in the second stage of this two-stage decision process. The firm considers capital market frictions when making decisions at each stage, while considering uncertainty in demand for its offering and in reducing its unit production cost.
Results: When a firm faces small initial capital and low pre-investment unit production costs, it can benefit from investing in production cost reduction in the presence of capital market frictions more so than in their absence. Moreover, uncertainty in the production cost reduction mitigates the impact of market frictions on the net benefit (i.e., additional profit), whereas demand uncertainty decreases the feasible parameter space where investing in production cost reduction is optimal.
Managerial Implications: A firm’s decision to invest in production cost reduction affects its operational and financial capabilities. Managers should thus consider this investment as an operational hedge not only against the uncertainty of matching supply and demand, but against exposure to capital market frictions and the resulting financial risk.
Keywords: cost-reduction investment, operational hedging, capital market frictions, OM-finance interface
“Financial Consequences of Political Uncertainty: The Arab Spring”
by A. Başak Tanyeri
Bilkent University – Faculty of Business Administration
We investigate how political unrest affects assets prices in the context of Arab Spring. Abnormal returns in major stock-market indices of Arab Spring countries average -1 percent on key days of Arab Spring where Egypt is the country most affected. Abnormal changes in credit default spreads average 1 percent with Saudi Arabia experiencing the most significant spike. The stock market reaction is more pronounced around local protests when compared to protests in neighboring countries. The significant reaction to region-wide protests indicates a spill-over with protests in neighboring countries affecting investors’ perception of local political instability and the pricing of assets.
JEL: G23, G34
Keywords: Political uncertainty, Arab Spring, regional spill-overs.
“Optimal Assortment Planning for Firms Using Transshipments”
by Nagihan Çömez Dolgan
İstanbul Şehir University
Transshipments may help firms to satisfy customer demand timely and at a lower cost then receiving emergency shipments from upper echelon supplier in case of stock unavailability. While the effects of considering transshipments along with inventory decisions are extensively investigated, transshipments may also affect more strategic level decisions such as assortment planning. In this study, our objective is to find the optimal assortments in a centralized system, where firms can utilize transshipments for the products they don’t keep. We use an exogenous demand model and consider the settings where an assortment capacity constraint at each firm is present or not. If a product is not carried by any of the firms, then it is considered that a customer can be willing to substitute his/her demand with another product, which can be either directly satisfied from the firms’s inventory or by transshipment. We shed light on optimal firm assortments when transshipments are utilized.
“Audit Fees and CEO Network Centrality”
by Mohamad Mazboudi
American University of Beirut
We introduce the well-established concept of social network centrality to the auditing literature. We argue that CEO network centrality increases the CEO bargaining power in audit fee negotiations since high network centrality brings influence and power to CEOs within their social networks. We find that audit fees are lower in firms managed by CEOs with high network centrality. This is slightly more pronounced when a firm constitutes a greater share of an auditor’s industry clientele. Interestingly, we also find that audit quality does not deteriorate when audit fees are lower if the firms have more central CEOs. We further document the influence high-centrality CEOS have on the audit decisions of their social peers. For example, we show that less central (i.e., peripheral) CEOs are likely to hire auditors that do work for firms with CEOs enjoying high levels of network centrality. Together these results suggest that high network centrality reflects a bargaining power CEOs can use to lower their audit fees.
Keywords: Audit fees; Bargaining power; Social networks; Network centrality.
JEL Classification: L 14; M 41; M 42
“A New Integrated Clustering and Routing Algorithm for an Inventory Routing Problem”
by Ali Ekici
Inventory Routing Problem (IRP) arises from vendor-managed inventory business settings where the supplier is responsible for replenishing the inventories of its customers over a planning horizon. In IRP, the supplier makes the routing and inventory decisions together to improve the overall performance of the system. More specifically, the supplier decides (i) when to replenish each customer, (ii) how much to deliver to each customer, and (iii) how to route delivery vehicles between the depot and the customers. In this talk, we present a heuristic framework that integrates clustering and routing phases for an inventory routing problem where the supplier’s goal is to minimize total transportation cost over a planning horizon while avoiding stock-outs at the customer locations. In the clustering phase, we partition the customer set into clusters such that a single vehicle serves each cluster. In the routing phase, we develop the delivery schedule for each cluster. The novelty of the proposed approach is that it takes the three main decisions (when to deliver, how much to deliver and how to route) into account when partitioning the customer set and forming the delivery schedule for each cluster. We compare the proposed solution approach against the ones in the literature and obtain significantly better results in terms of both the number of instances that have been solved and the quality of the solution found. Since the proposed clustering approach is quite generic, we foresee that it can be used for other routing algorithms as well.
Ali Ekici is an Associate Professor in the Department of Industrial Engineering at Ozyegin University. He holds PhD and MS degrees in Industrial and Systems Engineering from Georgia Institute of Technology, and BS degrees in Industrial Engineering and Mathematics from Middle East Technical University. His research experience and interests are in the field of health and humanitarian logistics, disease spread modeling, vehicle/inventory routing and scheduling/packing applications. He has published in prestigious journals including MSOM, Transportation Science, Naval Research Logistics and Computers & Operations Research. His research is supported by TUBITAK grants.
“Revealing Private Information in a Patent Race”
by Pavel Kocourek
In this paper I study dynamic and strategic aspects of R&D rivalry. I consider a patent race in which the first firm to make two consecutive breakthroughs wins the prize. A breakthrough arrives with instantaneous probability equal to the firm’s R&D effort level, and its arrival is observed privately. A firm varies its effort as it updates its belief about the rival’s progress. I find that a firm drops its effort over time until its first breakthrough arrives, in which case the effort jumps up and keeps increasing until one of the players patents. Further, I investigate whether a firm would want to reveal success in order to discourage its rival. I find that a firm never reveals if its rival has, and is first to reveal when a breakthrough is hard to achieve. When breakthroughs arrive quickly the firm prefers secrecy to revelation. For intermediate levels of research difficulty firm’s revelation behavior entails randomization or delay. Interestingly, when there are more than two players, equilibrium always entails revelation.
“The Joint Effect of Unionization and Economy-wide Shocks on Industry M&A Activity”
by Şerif Aziz Şimşir
We examine the effect of labor unionization on industry-level takeover activity after negative economy-wide shocks. Focusing on the 2008 financial crisis, we find that the merger intensities drop significantly during the post-crisis period. However, the degree of unionization in an industry attenuates the negative effect of the financial crisis on merger activity. Prior literature shows that unionization tends to lower takeover activity. Our results indicate that, in times of economy-wide crises, this adverse effect is weakened since we also document a similar pattern after the 2001 recession. In contrast to economy-wide crises, industry-level economic shocks do not lead to a relative increase in M&A activity for unionized industries.
“Designing an Intervention Strategy for Public-interest Goods: The California Electric Vehicle Market Case”
by Ece Zeliha Demirci
Eindhoven University of Technology
Public-interest goods are known as goods with positive externalities, allowing the consumers as well as others who do not pay for them benefit from their consumption. Health related goods, such as vaccines, or products with less carbon emissions are well known examples. Wider adoption of such goods are generally ensured via the intervention of a central authority in their supply chain. The main goal of the central authority is to design and fund an intervention scheme so that decisions of the channel are in line with the benefit of society. In this study, we explore the intervention problem for a public-interest good by considering a system composed of a retailer and a central authority. The central authority regulates the system by two intervention tools applied simultaneously: (i) investing in demand-increasing strategies; and (ii) rebates. We introduce a model that determines a social welfare maximizing intervention scheme and further investigate the model. Finally, we conduct a case study for California’s electric vehicle market and validate our findings by a detailed analysis of the results.
Bio: Dr. Ece Zeliha Demirci received her B.S., M.S., and Ph.D. degrees from Industrial Engineering Department of Bilkent University. Currently, she is a postdoctoral researcher at the Industrial Engineering and Innovation Sciences Department of Eindhoven University of Technology. Her research interests are supply chain management, sustainable operations, inventory theory, maintenance and spare parts planning.
“Do sharing economy firms refuse to share? Information asymmetries and consumer safety in short-term accommodation platforms”
by Burçin Güçlü
Universitat Ramon Llull
This study investigates the effect of information asymmetries on consumer safety in the context of sharing economy platforms. In view of the negative effect of information asymmetries on consumer choice via moral hazard, adverse selection, and monopoly power, we aim to understand whether sharing economy platforms decrease consumer safety through asymmetric information. Empirically, we use i) secondary data from Inside Airbnb portal with descriptive information on the availability of Airbnb’s safety amenities in Amsterdam, ii) primary data we collected through R on Airbnb’s safety amenities listings to assess the change in customers’ accrued value with lack of safety amenities and asymmetry of information, and iii) data from a survey experiment to capture the effect of increased safety information on consumer choice. We find that asymmetry in safety information leads the customer to choose the less safe short-term accommodation, and conclude that consumers pick safer short-term accommodations when provided with full safety information. While secondary data highlight the limitations of Airbnb in providing full safety information to customers, our primary data analysis confirms the decline in customer value in case of lack of safety amenities and asymmetry of information. We share further implications of our study for (government) intervention to counteract asymmetry of information, and company policy to insure consumer safety in short-term accommodation rentals.
Keywords: sharing economy platforms, consumer safety, consumer choice, asymmetric information, Airbnb.
“How Do Regulatory Costs Affect M&A Decisions and Outcomes”
by Barış İnce
In this paper, I look into the relation between fixed regulatory costs and M&A decisions. Regulations introduce significant fixed costs, and add to operating leverage. Regulatory operating leverage, introduced by Ince and Ozsoylev (2018), quantifies the ratio of fixed regulatory costs within a firm’s cost structure. I document that regulatory operating leverage increases implied cost of equity, and decreases operating margin, hence decreases a firm’s value. Economies of scale decrease exposure to regulatory fixed costs, therefore large firms are less exposed to the negative value implications of regulatory operating leverage. This creates a motive for large firms with high regulatory operating leverage to acquire other firms in the same industry that are exposed to similar regulations. Since regulatory operating leverage is constraining for small firms, it increases the likelihood of a small firm being a target. Moreover, as the merger results in a decline in the acquirer’s regulatory operating leverage, it is value increasing.
“Managing Election Campaign with the Power of Analytical Modeling and Heuristics”
by Masoud Shahmanzari
We present a Granular Skewed Variable Neighborhood Tabu Search (GSVNTS) for the Roaming Salesman Problem (RSP). RSP is a multi-period and selective version of the traveling salesman problem involving a set of cities with time-dependent rewards. It is defined over a fixed planning horizon referred to as the campaign period. Each city can be visited on any day for reward collection while a subset of cities can be visited multiple times, though with diminishing rewards after the first visit. The goal is to determine an optimal campaign schedule consisting of either open or closed daily tours that maximize the total net benefit while respecting the maximum tour duration and the necessity to return to the campaign base frequently. RSP arises in several applications including touristic trip planning, planning of client visits by company representatives, and election logistics. A differentiating feature of the RSP is that there exist no fixed depots and daily tours do not have to start and end at the same city. We formulate RSP as a mixed integer linear programming problem in which we capture as many real-world aspects as possible. We also present a hybrid metaheuristic algorithm which can be classified as a Variable Neighborhood Search (VNS) with Tabu Search conditions. The initial feasible solution is constructed via a novel two-phase matheuristic approach which decomposes the original problem into as many subproblems as the number of days. Next, this initial solution is improved using the proposed local search procedure. The concept of granularity is incorporated into the developed algorithm to prevent non-promising moves and thereby reduce the computing time of the neighborhood search. On the other hand, the concept of skewedness modifies the basic VNS so as to explore deeper neighborhoods of the current solution by accepting nonimproving moves which lead to far enough neighboring solutions. We consider a set of 95 cities in Turkey and a campaign period of 40 days as our largest problem instance. Computational results on actual distance and travel time data show that the developed algorithm GSVNTS can find near-optimal solutions in reasonable CPU times.
“Product Market Competition and the Value of Diversification”
by Cansu İskenderoğlu
This paper examines how industry concentration affects the value of diversification and explores the strategic value of agency problems in product markets for concentrated conglomerates.
I find that conglomerates that operate mainly in concentrated industries have higher diversification values. Consistent with agency theories, agency problems, on average,lead to greater diversification discount. In contrast, agency problems in concentrated conglomerates create strategic advantage and lead to greater diversification values consistent with the notion that these conglomerates can credibly commit to their industries in case of competitive threats. Using import tariff reductions as exogenous competitive shocks, I show that concentrated conglomerates experience significant decline in their valuations when they are hit by competitive shocks and they respond more aggressively to competitive shocks in order to defend their market positions in less-competitive industries.
“Learning from Many: Partner Exposure and Team Familiarity in Fluid Teams”
by Zeynep Akşin Karaesmen
In services where teams come together for short collaborations, managers are often advised to strive for high team familiarity so as to improve coordination and, consequently, performance. However, inducing high team familiarity, by keeping team membership intact, can limit workers’ opportunities to acquire useful knowledge and alternative practices from exposure to a broader set of partners. We introduce an empirical measure for prior partner exposure and estimate its impact (along with that of team familiarity) on operational performance using data from the London Ambulance Service. Our analysis focuses on ambulance transports involving new paramedic recruits, where exogenous changes in team membership enable clean identification of the performance effect. Specifically, we investigate the impact of prior partner exposure on time spent during patient pick-up at the scene and patient handover at the hospital. We find that the effect varies with the process characteristics. For the patient pick-up process, which is less standardized, greater partner exposure directly improves performance. For the more standardized patient handover process, this beneficial effect is triggered beyond a threshold of sufficient individual experience. In addition, we find that the beneficial performance impact of prior partner exposure is amplified during periods of high workload, for both processes. Finally, a counterfactual analysis based on our estimates shows that a team formation strategy emphasizing partner exposure outperforms one that emphasizes team familiarity by about 9.2% in our empirical context.
Co-authors: Sarang Deo, Indian School of Business, Jonas Oddur Jonasson, MIT Sloan School of Management, Kamalini Ramdas, London Business School
“A high frequency analysis of the information content of trading volume”
by Khaladdin Rzayev
The University of Edinburgh
We propose a state space modelling approach for decomposing high frequency trading volume into liquidity-driven and information-driven components. Based on a set of high frequency S&P 500 stocks data, we show that informed trading increases pricing efficiency by reducing volatility, illiquidity and toxicity/adverse selection during periods of non-aggressive trading. We observe that our estimated informed trading component of volume is a statistically significant predictor for one-second stock returns; however, it is not a significant predictor for one-minute stock returns. This disparity is explained by high frequency trading activity, which leads to the elimination of pricing inefficiencies at high frequencies.
JEL Classification: G12; G14; G15
Keywords: trading volume; expected component; unexpected component; volatility; liquidity; market toxicity, unobserved components time series models; high-frequency data.
“The Self-Conscious Consumer: Understanding and Mitigating Consumer Embarrassment”
by Nilüfer Aydınoğlu
Embarrassment is a pervasive emotion with much impact on everyday motivations and behavior, including consumption contexts. The purchase, consumption, and even disposal of certain ‘sensitive’ products (e.g., contraceptives, pornography, hemorrhoid cream, disease tests, etc.) often lead to feelings of consumer embarrassment with possible adverse consequences for the consumer landscape. Marketers have attempted to offer personal and/or undisclosed modes of purchase to help mitigate the negative effects of consumer embarrassment such as online purchasing or self-checkout systems. Such marketing practices reflect an understanding of embarrassment as a ‘public’ emotion, and do not fully mitigate embarrassment. We build on recent research in acknowledging the private aspects of consumer embarrassment as well, and examine how its adverse consequences for consumer well-being can be mitigated.
We adopt the view of embarrassment as a self-conscious emotion which is characterized by: i) awareness of the emotional state, ii) deliberation and cognitive elaboration; and iii) self-reflection. Accordingly, we propose and demonstrate through multiple experiments that cognitive load (i.e., reduced deliberation) dampens embarrassment. We also show process evidence for the effect of deliberation on embarrassment and behavioral responses through self-appraisal. In doing so, we offer a fuller model for consumer embarrassment that considers the nature of the consumption context with a focus on deliberation and appraisal. As such, we are able to provide important theoretical contributions to the conceptualization of embarrassment in consumer psychology, as well as suggesting directly usable managerial insight toward mitigating the adverse
“Can capital adjustment costs explain the decline in investment-cash flow sensitivity”
by Shushu Liao
Lancaster University Management School
It is well documented that since at least 1960s investment-cash flow (I-CF) sensitivity had been decreasing over time to disappear almost completely by late 2000s. We demonstrate that this pattern is consistent with the observed evolution of the capital adjustment costs in a neoclassical investment model with costly external financing. In particular, we estimate the magnitude of the capital adjustment cost parameter across different periods and show that the decreasing pattern of the I-CF sensitivity can be explained by the gradually increasing costs of capital adjustment. Consistent with the prior literature, we find no evidence of financial frictions being able to significantly contribute to the observed time-series pattern. The main results are further corroborated in a robustness analysis, which exploits the cross-industry and cross-country variation of capital adjustment costs. More generally, our results demonstrate that I-CF sensitivity should only be interpreted as a joint measure of real and financial frictions.
“50 million nanostores: researching mom-and-pops in emerging economies”
by Jan C. Farnsoo
Kuehne Logistic University
Virtually all research on retail operations has been focused on organized retail: retail chains or online retail brands that operate a more or less centrally controlled and operated network of outlets. In most countries of the world, however, the majority of retail sales is realized in independent, family operated stores. While there is a large variety of these stores, we denote these stores by the generic name nanostores. In this talk, I will outline the major characteristics of nanostores, their store and supply chain operations, and their specific institutional context which leads to very different research questions and operational challenges. I will illustrate some of the research work we have conducted over the past years in this domain using formal modeling, qualitative analysis, and field experimentation. I will conclude by discussing some recent developments, in particular related to the entry of new technologies and new hard-discount formats entering into this traditional channel.
About the speaker:
Jan C. Fransoo is Professor of Operations Management & Logistics at Kuehne Logistics University in Hamburg, Germany. He also serves as the University’s Dean of Research and Member of the Executive Board. He joined KLU in 2018 following a tenure of 22 years at Eindhoven University of Technology in the Netherlands, where he still holds a courtesy professorship in its School of Industrial Engineering. Fransoo holds a Master of Science degree in Industrial Engineering and a Doctor of Philosophy degree in Operations Management and Logistics, both from Eindhoven University of Technology. Professor Fransoo’s research studies operations, logistics, and supply chain management decision making in the retail, chemical, food, pharmaceutical and transport industries. His current research focuses in particular on retail distribution and channel management in developing markets, on intermodal container transport, and on sustainability and social responsibility in supply chains. His recent co-edited books include “Reaching 50 Million Nanostores: Retail Distribution in Emerging Megacities” and “Sustainable Supply Chains: A Research-Based Textbook on Operations and Strategy”. Fransoo has published both modeling and empirical research in over 120 academic journal articles and book chapters, in journals such as Management Science, Production and Operations Management, Operations Research, Manufacturing & Service Operations Management, European Journal of Operational Research, and Journal of Operations Management. He is Associate Editor of multiple journals, including Operations Research, Production and Operations Management, and Decision Sciences Journal. More details, including a full publication list and his blogposts, can be found on https://www.janfransoo.com/
“Spanning Tests for Markowitz Stochastic Dominance”
by Nikolas Topaloglou
Athens University of Economics and Business
We derive properties of the cdf of random variables defined as saddle-type points of real valued continuous stochastic processes. This facilitates the derivation of the first-order asymptotic properties of tests for stochastic spanning given some stochastic dominance relation. We define the concept of Markowitz stochastic dominance spanning, and develop an analytical representation of the spanning property. We construct a non-parametric test for spanning based on subsampling, and derive its asymptotic exactness and consistency. The spanning methodology determines whether introducing new securities or relaxing investment constraints improves the investment opportunity set of investors driven by Markowitz stochastic dominance. In an application to standard data sets of historical stock market returns, we reject market portfolio Markowitz efficiency as well as two-fund separation. Hence,we find evidence that equity management through base assets can outperform the market, for investors with Markowitz type preferences.
Key words and phrases: Saddle-Type Point, Markowitz Stochastic Dominance, Spanning Test, Linear and Mixed integer programming, reverse S-shaped utility.
JEL Classification: C12, C14, C44, C58, D81, G11.
“How Do Sponsorships Work?”
by Barış Erman Depecik
Bilkent University, Faculty of Business Administration
Partnerships with major sports franchises have become an increasingly utilized marketing communications tool. Yet, progress in measuring and assessing sponsorship’s business impact has been marginal and there is an unmet need for more sophisticated measurement and valuation practices. To identify the various ways through which the sponsored brand may be affected in the long-run, we investigate how sales and market response parameters evolve over time in response to a partnership between a brand and a major sports franchise. A canonical form of hierarchical multivariate dynamic linear model is developed and applied to partnership deals of National Football League and Major League Baseball franchises. The model links partnerships to sales and market response parameters directly and indirectly through their impact on own and competitive mindset metrics. The model controls for competitive reactions and performance feedback in marketing and accommodates dynamic dependencies in mindset metrics. The results indicate that a sponsored brand experiences (i) a direct gain in baseline sales and (ii) indirect gains due to an increased effectiveness for its marketing mix instruments and a reduced cross-sensitivity to rival firms’ marketing activities. The magnitudes of the effects are contingent on team performance, star power of the roster, sponsorship type (title vs. team), and the level of categorical exclusivity. Our findings imply that any analysis of sponsorship return must account for indirect benefits of sponsorship on market response parameters and sponsors should carefully consider synergies between different promotional mix elements to maximize indirect benefits
“Wealth Loss and Entrepreneurial Entry”
by Görkem Aksaray
This paper explores the relationship between loss aversion and venture creation. We model a loss averse individual who is risk averse in the domain of gains, but risk seeking in domain of losses. The model predicts that the individual is more likely to transition from wage-employment to entrepreneurship following losses in wealth. In empirical tests, consistent with the model, we find that individuals who recently experienced losses are more likely to become self-employed. Furthermore, we decompose the change in wealth into expected and unexpected components. Only the latter affects the likelihood of self-employment. This relationship is distinct from the positive association between level of wealth and entrepreneurial entry documented in the prior literature. Our finding that potential entrepreneurs are loss averse has implications for the understanding of new ventures.
“Nurturing a Culture of Teaching Excellence in Universities”
by Emin Çivi
Nurturing a culture of teaching excellence in universities through creating sense of community teaching and research have long been considered two of the primary functions of universities. But even though many of today’s universities consistently and very publicly repeat the common rhetoric that teaching and research “are coequals”, one often encounters opposing views both in personal experience and in the relevant literature. In this talk, Dr. Çivi will share his initiatives and efforts to get across-the-board recognition of the value of effective teaching in a university setting.
Bio: Emin Çivi is a 3M National Teaching Fellow and Professor of Marketing at the University of New Brunswick, Saint John, Canada. He is currently teaching at the Faculty of Business Administration in Bilkent University as a visiting professor.
“Enacting Internal Market Orientation as a dynamic capability for improving NSD team performance and resource configuration”
by Achilleas Boukis
University of Sussex
As further empirical insights are necessary regarding how service firms can best reconfigure the resources available to new service development (NSD) teams. This study enquires how the management of the NSD team and team dynamics affect team members’ perceptions of resource configuration and proposes Internal Market Orientation (IMO) as a dynamic capability (DC) which enables service firms to improve the management of their NSD teams. Results also indicate that IMO adoption improves NSD team dynamics via improved team trust, conflict resolution and a better team climate, subsequently leading to improvements in perceived resource adequacy and competence. Also, service innovativeness and task conflict affect negatively perceived resource adequacy and competence. Overall, this work provides substantial implications for the DC, internal marketing and NSD areas and a number of theoretical and practical implications on how NSD teams should be managed towards better resource configuration.
Bio – Dr Achilleas Boukis is a Lecturer in Marketing at Sussex University, UK. Achilleas holds a PhD from Strathclyde University, UK (2014) and his main research interests lie within the services marketing, branding and innovation management areas. Achilleas has published his research in academic journals such as Journal of Business Research, European Management Review, Services Industries Journal, and Journal of Services Marketing. Achilleas has been awarded the Harry Kroto Research Fellowship (University of Sussex, 2018) and was the Highly Commended Award winner of Emerald/EFMD Outstanding Doctoral Research Awards (European Journal of Marketing, 2014).
“Bounded Rationality in Clearing Service Systems”
by Pelin Gülşah Canbolat
In this work, we consider a clearing service system where customers arrive according to a Poisson process, and decide to join the system or to balk in a boundedly rational manner. We assume that all customers in the system are served at once when the server is available and times between consecutive services are independently and identically distributed random variables. Using logistic quantal-response functions to model bounded rationality, we first characterize customer utility and system revenue for fixed price and degree of rationality, then solve the pricing problem of a revenue-maximizing system administrator. The analysis of the resulting expressions as functions of the degree of rationality yields several insights including: (i) For an individual customer, it is best to be perfectly rational if the price is fixed; however, when customers have the same degree of rationality and the administrator prices the service accordingly, a finite nonzero degree of rationality uniquely maximizes customer utility, (ii) System revenue grows arbitrarily large as customers tend to being irrational, (iii) Social welfare is maximized when customers are perfectly rational, (iv) In all cases, at least 78% of social welfare goes to the administrator. We also explore the extension of these results to the case where customers are heterogeneous with respect to the degree of rationality.
Research & Publication Seminars
by Gazi İslam
Grenoble Ecole de Management
Organizing Material: A Research Agenda for the “Material Turn” in Organizational Scholarship
Organizational scholarship has been increasingly concerned with the material and aesthetic properties of work. As evidenced by a rapid growth in visual, spatial and object-centered approaches, as well as discussions of embodied cognition and affect, organizational scholarship has been characterized as going through a “material turn”. By acknowledging the materiality of organizing, such scholarship has addressed some of the limitations of purely discursive or cognitive approaches, while offering avenues for studying the impacts of novel technological and material artefacts in organizations. This presentation will discuss the possibilities for current thinking around the material turn in organizing, presenting an ongoing research agenda around different aspects of materiality. I will discuss the theoretical and methodological challenges around defining sites of study, analysing and interpreting data, and theorizing materiality Based on a brief description of my own research agenda around materiality at work, I reflect on the challenges and possibilities of this agenda in organizational scholarship.
Publishing in Management and Organization Studies- Contexts, Paradigms, Communities
The purpose of this talk is to discuss publishing experiences and strategies in organizational scholarship. Drawing on personal experiences in publishing, as well as experience as Section Editor at Journal of Business ethics and editorial board member of Organization Research Methods, Journal of Management, Organization, Journal of Organizational Behavior, and Management Decision, and Organization Theory, I will share some of my own observations around academic research and publishing, including: International mobility and publishing, Academic communities and audiences, the relation between methodological choices and publishing, and the evolving nature of academic visibility. The format is meant to be interactive, with ample time for discussion, questions and debate.
“Order Fulfillment Policies for Ship-from-Store Implementation in Omni-Channel Retailing”
by Bahriye Cesaret
One of the recent trends in omni-channel retailing is ship-from-store which allows a retailer to fulfill online orders by using inventory from a nearby brick-and-mortar store. The benefits of this relatively new fulfillment model include faster delivery, lower transportation costs, higher in-stock probability, increased sales and customer satisfaction, etc. Despite its many benefits, this fulfillment model introduces many new operational challenges to the retailer, including the need to identify from which location to fulfill an online order when it arrives. Best Buy, Macy’s, and Walmart are some of the retailers that successfully integrate ship-from-store into their fulfillment strategies. In this study, we consider a retailer having both online and store operations, with each channel carrying its own inventory. Store orders are fulfilled from store inventories, whereas an online order can be shipped either from an online fulfillment center or from any other store location that maximizes the retailer’s overall profit. Our study investigates dynamic fulfillment decisions: from which location to fulfill an online order when it arrives. We incorporate the uncertainty both in demand and in the cost of shipment to individual customers. We develop a stochastic dynamic framework and characterize the optimal cross-channel fulfillment policy. Due to the optimal policy being computationally intractable for large-sized problems, we construct an intuitive heuristic policy to guide the retailers in their fulfillment decisions. Our computational experiments indicate that the proposed heuristic method is both computationally efficient and effective for the cross-channel fulfillment problem.
Bahriye Cesaret is an Assistant Professor at the Faculty of Business at Özyeğin University. She received her B.S. in Industrial Engineering (2008) from Istanbul Technical University, and M.S. in Industrial Engineering (2010) from Koç University. In 2010, she joined the Ph.D. program in Management Science at the University of Texas at Dallas (UTD). During her pursuit of Ph.D., she earned an M.B.A. (2013) and an M.S. degree in Supply Chain Management (2013) from UTD. She completed her Ph.D. in Management Science (with a concentration in Operations Management) in 2015. She received an ‘Outstanding Student Teacher Award’ from the Naveen Jindal School of Management for the academic year 2013-2014. Her current research lies in two main streams: Behavioral and Retail Operations Management
“Quantification of System Reliability using the Survival Signature”
by Frank Coolen
The survival signature  is a summary of the system structure function which is sufficient for several goals in system reliability quantification. In particular for larger systems which consist of just a few types of components, the survival signature may provide huge efficiency gains for the analysis. We will present an introductory overview of the survival signature. We will address its computation and approximation, its use for efficient simulation,and generalizations for phased-mission systems and for multiple systems (or system functions) sharing components. We will discuss ongoing research and further challenges.
 FPA Coolen, T. Coolen-Maturi (2012). Generalizing the signature to systems with multiple types of components. In: Complex Systems and Dependability, W. Zamojski et al. (eds). Springer, Berlin, pp. 115-130
Frank Coolen is Professor of Statistics at the Department of Mathematical Sciences,Durham University, UK. He completed his PhD at Eindhoven University of Technology in The Netherlands in 1994, after which he joined Durham University. His main areas of research are Nonparametric Predictive Inference, Imprecise Probability Theory, and System Reliability. He has published about 250 journal and conference papers. He is member of the editorial boards of 9 journals in Statistics and Reliability,and has supervised about 20 PhD students to completion, with about 10 further students working under his supervision at the moment. He regularly serves on Conference Committees and Research Funding Panels.
“Perspectives on Sustainable Logistics and Return Policies”
by M.Ali Ülkü
A product may be returned for a variety of reasons, including the product having poor functionality, being damaged during shipment, or simply prompting regret for an impulsive purchase. As a risk-reliever for consumer’s purchasing decision, especially for online sales, almost all retailers provide lenient returns policies. Add to this, a returns policy that comes with a product may signal a higher product quality and may enhance sales. However, such lenient return policies, if abused by the consumers, may mar supply chain profitability. In this talk, drawing on my past publications and ongoing research related to sustainable logistics and consumer (post-purchase) behavior, I will elaborate on insights into how various retailer’s return policies may impact supply chain decisions and sustainability.
M. Ali Ülkü is a Professor and the Director of the Centre for Research in Sustainable Supply Chain Analytics, in the Rowe School of Business at Dalhousie University in Halifax, NS, Canada. He received his Ph.D. in Management Sciences from the University of Waterloo, M.Sc. in Operations Research from Çukurova University, and B.Sc. in Industrial Engineering from Bilkent University. Prior to his academic career, he worked as a productivity consultant at Anadolu Efes. Dr. Ülkü’s writings include the theoretical modeling of sustainable supply chain and logistics systems, operations-marketing interface, and mathematical modeling of consumer behavior. He published in such journals as Annals of Operations Research, European Journal of Operational Research, International Journal of Production Economics, Journal of Business Research, Journal of Cleaner Production, and Service Science. He served as the Program Chair for the 2018 Conference of the Canadian Operational Research Society. Dr. Ülkü taught at various universities in Turkey, Canada, and the USA. A recipient of the 2007 Exceptional Teaching Award at the University of Waterloo, Dr. Ülkü is an avid supporter of “the science and the teaching of the better.” During Spring 2019, Prof. Dr. Ülkü was a visiting professor at the Faculty of Business Administration, Bilkent University.
“Dividends and Option Prices ”
by Prof. Nejat Seyhun
Ross School of Business – University of Michigan
We seek to measure the effects of dividends on option prices. Individual stock options are American type and unprotected from dividends. Option holders are expected to anticipate the dividend payments during the life of the option and price the option accordingly. Consequently, as long as dividends are anticipated, in an efficient market, dividend payments should not affect option prices. On the other hand, unexpected dividend changes should result in wealth gains and losses for option holders. In this paper we test to see if investors form proper expectations about the dividend policy and take into account both expected and unexpected changes in dividends in pricing options. Our findings indicate that unexpected dividend changes affect option prices, while expected dividend changes do not affect option prices.
“THE HIDDEN FIGURES IN FASHION: DIVERSITY ISSUE”
by Lena Çavuşoğlu
Izmir University of Economics
Prior research has emphasized how the fashion industry creates a burden on women to measure their self-worth with the ideal standards of beauty defined by the industry. In a fashion scene dominated by Caucasian looks, this burden becomes even more substantial for women from different ethnic, racial, religious, or cultural backgrounds and women in different age groups and socioeconomic classes and with differing physical abilities, to name a few. As such, investigating the fashion consumption experiences of a diverse group of women, the social and psychological consequences of underrepresentation, and the perspectives of fashion producers on diversity becomes crucial. With a qualitative inquiry, this study employs the triangulation of data collection techniques, including 58 semi-structured, in-depth interviews with both fashion consumers and producers, observation, and secondary research, as well as interpretive analysis and content analysis through Netnography (via Instagram posts under the hashtag #fashiondiversity). The first theoretical contribution of this research is the revelation of a perception gap between fashion producers and consumers regarding what diversity means, as well as the extension of the types of diversity that were previously ignored in the literature. Second, through using the social capital framework to understand the consumption experiences of diverse consumers, the study highlights the impact of virtual communities and the role of different fashion constituents regarding a possible institutional-level change towards increased diversity or cultural homogeneity. Ultimately, through this study, I hope to contribute to a change towards increased inclusivity, a redefining the beauty standards, and the preventions of the industry from engaging in practices that lead to the exclusion of specific female groups.
“Lending Cycles and Real Outcomes”
by Orkun Saka
University of Sussex
We use data on the universe of credit in Turkey to document a strong political lending cycle. State-owned banks systematically adjust their lending around local elections compared with private banks in the same province. There is considerable tactical redistribution: state-owned banks increase credit in politically competitive provinces which have an incumbent mayor aligned with the ruling party, but reduce it in similar provinces with an incumbent mayor from the opposition parties. This effect only exists in corporate lending as opposed to consumer loans, suggesting that tactical redistribution targets job creation to increase electoral success. Political lending influences real outcomes as credit-constrained opposition areas suffer drops in employment and firm sales. There is substantial misallocation of financial resources as credit constraints most affect provinces and industries with high initial efficiency.