Séminaires

SOCIAL BIAS IN ONLINE PRODUCT RATINGS

Informations Systems and Operations Management

Intervenant : Michael Zhang
Professeur Associé , Hong Kong University of Science and Technology

3 décembre 2014 - HEC Paris - Campus Jouy en Josas - Bâtiment S - Salle 126 - De 14h00 à 15h30


We investigate social influence between online friends in online book ratings with rating and social-network data from a popular online rating website in China. Our methodology exploits the dynamic feature of online social networks and offers a unique method for identifying the presence of social influence while accounting for rater similarity in online book ratings. On average, rating similarity between friends is about 1.9 times higher with social influence. We further discuss the impacts of user-­ and book-characteristics on the focal users’ susceptibility to social influence from their online friends. We find that social influence is stronger for older and more popular books and for users who have smaller online social networks. Underscoring an important feature of social media, we also find that more recent friends’ ratings have more significant influence.

Bio: Professor Michael Zhang is an Associate Professor of Information Systems, Business Statistics and Operations Management at the Hong Kong University of Science and Technology, and an affiliated faculty at MIT Center for Digital Business. He holds a PhD in Management from MIT Sloan School of Management, an MSc in Management, a BE in Computer Science and a BA in English from Tsinghua University. Before joining the academia, he worked as an analyst for an investment bank, and as an international marketing manager for a high-­tech company. He holds a US patent, and started a social network company. Professor Zhang’s research interests are on issues related to creation, dissemination and processing of information in business and management contexts. His works study pricing of information goods, online word-­of-mouth, online advertising, incentives of creation
in open source and open content projects, and use of information in financial markets. His research has appeared in American Economic Review (AER), Management Science, Journal of Marketing (JM), MIS Quarterly (MISQ), Information Systems Research (ISR), Journal of MIS (JMIS), Decision Support Systems (DSS), and Journal of Interactive Marketing. He has also been actively involved in professional services, including serving as an Associate Editor for Information Systems Research (ISR), a Guest Associate Editor for MIS Quarterly, and a member of the editorial boards of Production and Operations Management (POM) and Electronic Commerce Research and Applications.

The Impact of Manufacturer SPIFFs on a Supply Chain with Retailer-hired Sales Agent

Informations Systems and Operations Management

Intervenant : Neda Ebrahim Khanjari
Assistant Professor in Management , The School of Business, Rutgers University

3 octobre 2014 - HEC Paris - Campus Jouy en Josas - Bâtiment S - Salle S119 - De 10h30 à 12h00


In many industries, manufacturers pay commissions to retailer-hired sales agents to boost the demand for the manufacturers' products, and this type of payments are often called sales incentive fund (spiff). In this paper, we study the implications on the supply chain performance when a retailer hires sales agents but a manufacturer may obtain the capability to directly pay commissions to the retailer's sales agents. We show that when a manufacturer obtains the capability to pay spiffs directly to retailer-hired sales agents, the exact value of the wholesale price charged by the manufacturer to the retailer does not affect the equilibrium profits of the supply chain members, the effort level of retailer-hired sales agents, and the retail price of the retailer. In addition, when the manufacturer's wholesale price is exogenous, the retailer always benefits when the manufacturer obtains the capability to pay spiffs to retailer-hired sales agents, but the manufacturer benefits only if the manufacturer's wholesale price is large enough. Furthermore, we show that while spiff payments may not be necessary to help improve the supply chain performance when the manufacturer's wholesale price is exogenous, when the manufacturer's wholesale price is endogenous, having the capability of paying spiffs directly to retailer-hired sales agents by the manufacturer can increase the the supply chain's profit but decreases the manufacturer's profit. Consequently, if the manufacturer and the retailer can work out a transfer payment plan when the manufacturer builds its capability to directly reward retailer-hired sales agents, the manufacturer can invest in its capability of rewarding retailer-hired sales agents directly to coordinate the supply chain. In this case, the retail price charged by the retailer would become the same as the price charged by an integrated channel.

GREEN SUPPLY CHAIN MANAGEMENT: ORGANISATIONAL IMPLICATIONS AND POLICY INSIGHTS FROM THE AUSTRALIAN CARBON TAXING

Informations Systems and Operations Management

Intervenant : Behnam Fahimnia
Professeur Associé en Management de la Supply Chain , The University of Sidney Business School

23 juin 2014 - HEC - Bâtiment S - Salle S122 - De 11h00 à 12h30


Carbon emissions are receiving greater scrutiny in many countries due to international forces to reduce anthropogenic global climate changes. Having the world's highest per capita carbon dioxide emissions, Australia has debated the merits of introducing various governmental carbon policies for over two decades. Various Australian studies on the economic implications of carbon pricing focused on whether a determined tax rate on carbon emissions is more effective than free market trading. Initial simulation results revealed that a carbon tax in Australia can cut emissions across the economy effectively, but will cause a mild economic contraction. In 2011, for the first time in Australian history, carbon pricing legislation passed the Australian Federal Parliament and as a result a carbon tax was introduced in July 2012. Since then, empirical policy investigations have tended to focus on the impact of the scheme on the national economy and emission reductions.
From an organisational perspective, the focus has been placed on how best to respond to the new carbon regulatory policy and jointly improve the organisational economic and environmental performance. In particular, determining how the scheme would influence supply chain decisions; for example, when and on what supply chain processes to invest to minimise the economic impacts of the scheme while concurrently improving the emission performance. Using a set of supply chain planning and optimisation case studies, this presentation will discuss our empirical findings on the organisational implications of carbon taxing in Australia and the related policy insights that can be gained from these outcomes.

SUPERSTAR SUBSIDIARIES AND INNOVATION IN MULTINATIONAL COMPANIES

Informations Systems and Operations Management

Intervenant : Ivo Zander
Professor and Head of the Entrepreneurship Department , Uppsala University

12 juin 2014 - Ecole des Mines de Paris - 60 Bd Saint-Michel 75006 Paris - De 17h00 à 19h00


A multinational corporation MNC can be modeled as a network of differentiated units internationally dispersed.
However, there are variations in the technological and strategic contributions of the subsidiaries. Among them, some take on strategic roles for the MNC globally and play a crucial role in designing new technology of significant importance for the development of the entire group. A very small number have consistent and highly significant technological contributions to the multinational group. We label them “superstar subsidiaries”.
Based on the evolution of two foreign subsidiaries of two Swedish multinational companies - the German subsidiary of ball bearing manufacturer SKF and the U.S. subsidiary of agricultural equipment producer Alfa Laval- the presentation will highlight what differentiates superstar subsidiaries from others in the multinational company, and in particular the origins and underlying drivers of these differences. A longitudinal investigation into the technological, business, and organizational development of both firms suggests that a number of factors need to coincide for a foreign subsidiary to develop superstar status. These factors include large and munificent local markets, high relative profitability, autonomy within the overall multinational group, as well as dynamic interrelationships between these factors.

Skill Archetypes of Successful IT Project Managers: A Repertory Grid Investigation

Informations Systems and Operations Management

Intervenant : Dr Felix B TAN
Professor of Information Systems and Head - Department of Business Information Systems - Faculty of Business and Law , Université de Technology Auckland Nouvelle Zélande

7 mai 2014 - Salle du Conseil bâtiment V - De 14h00 à 15h30


Both the academic and practitioner literature agree that competent Information Technology (IT) project management plays an important role in IT project success. Although effective project management is critical to better project outcomes, little empirical research has investigated skill requirements for IT Project Managers (PMs). This study addresses this gap by asking nineteen practicing IT PMs to describe the characteristics of both competent and incompetent IT PMs. A semi-structured interview method known as the repertory grid technique is used to elicit these skills. These skills are further sorted into nine skill categories: client management, communication, general management, leadership, personal integrity, planning and control, problem solving, systems development, and team development. This study complements existing research by providing a richer understanding of several skills which were narrowly defined (e.g., client management, planning and control, and problem solving) and by introducing two new skill categories which had not been previously discussed (e.g., personal integrity and team development). Analysis of the individual repertory grids reveals four distinct ways in which study participants combined skill categories to form skill archetypes for effective IT PMs. We describe these four skill archetypes -- general manager, problem solver, client representative, and balanced – and discuss how this knowledge can be useful for practitioners, researchers, and educators. The presentation concludes with suggestions for future research

Dr Felix B Tan is Professor of Information Systems and Head of the Business Information Systems department in the Faculty of Business and Law at Auckland University of Technology, New Zealand. He served as the Editor-in-Chief of the Journal of Global Information Management from 1998-2012. He was on the Council of the Association for Information Systems between 2003 and 2005.

Dr. Tan is internationally known for his work in the global IT field. His research interests fall broadly in 2 categories: IT user behavior and the management of IS. Dr Tan has published in MIS Quarterly, Information & Management, Information Systems Journal, Journal of Information Technology, IEEE Transactions on Engineering Management, International Journal of Electronic Commerce, Communications of the AIS, Communications of the ACM as well as other journals and refereed conference proceedings.

Contacts  


Informations Systems and Operations Management


Campus HEC Paris
1, rue de la Libération
78351 Jouy-en-Josas cedex
France

Faculté  

Woonam HWANG

Informations Systems and Operations Management

Voir le CV

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