Documents disponibles écrits par cet auteur

Information goods vs. industrial goods / Roy Jones in Management science, Vol. 57 N° 1 (Janvier 2011) 

Public ISBD [article]  in Management science > Vol. 57 N° 1 (Janvier 2011) . - pp. 164-176 Titre : Information goods vs. industrial goods : Cost structure and competition Type de document : texte imprimé Auteurs : Roy Jones, Auteur ; Haim Mendelson, Auteur Année de publication : 2011 Article en page(s) : pp. 164-176 Note générale : Management Langues : Anglais (eng) Mots-clés : Information  goods  Convex  development  cost  Product  and  price  competition Index. décimale : 658 Organisation des entreprises. Techniques du commerce Résumé : We study markets for information goods and find that they differ significantly from markets for traditional industrial goods. Markets for information goods in which products are vertically differentiated lack the segmentation inherent in markets for industrial goods. As a result, a monopoly will offer only a single product. Competition leads to highly concentrated information-good markets, with the leading firm behaving almost like a monopoly even with free entry and without network effects. We study how the structure of the firms' cost functions drives our results. DEWEY : 658 ISSN : 0025-1909 En ligne : http://mansci.journal.informs.org/cgi/content/abstract/57/1/164 [article] Information goods vs. industrial goods : Cost structure and competition [texte imprimé] / Roy Jones, Auteur ; Haim Mendelson, Auteur . - 2011 . - pp. 164-176. Management Langues : Anglais (eng) in Management science > Vol. 57 N° 1 (Janvier 2011) . - pp. 164-176 Mots-clés : Information  goods  Convex  development  cost  Product  and  price  competition Index. décimale : 658 Organisation des entreprises. Techniques du commerce Résumé : We study markets for information goods and find that they differ significantly from markets for traditional industrial goods. Markets for information goods in which products are vertically differentiated lack the segmentation inherent in markets for industrial goods. As a result, a monopoly will offer only a single product. Competition leads to highly concentrated information-good markets, with the leading firm behaving almost like a monopoly even with free entry and without network effects. We study how the structure of the firms' cost functions drives our results. DEWEY : 658 ISSN : 0025-1909 En ligne : http://mansci.journal.informs.org/cgi/content/abstract/57/1/164

Information transmission and the bullwhip effect / Robert L. Bray in Management science, Vol. 58 N° 5 (Mai 2012) 

Public ISBD [article]  in Management science > Vol. 58 N° 5 (Mai 2012) . - pp. 860-875 Titre : Information transmission and the bullwhip effect : An empirical investigation Type de document : texte imprimé Auteurs : Robert L. Bray, Auteur ; Haim Mendelson, Auteur Année de publication : 2012 Article en page(s) : pp. 860-875 Note générale : Management Langues : Anglais (eng) Mots-clés : Bullwhip  effect  Martingale  model  of  forecast  evolution  Production  smoothing  Bullwhip  decomposition  Demand  uncertainty Résumé : The bullwhip effect is the amplification of demand variability along a supply chain: a company bullwhips if it purchases from suppliers more variably than it sells to customers. Such bullwhips (amplifications of demand variability) can lead to mismatches between demand and production and hence to lower supply chain efficiency. We investigate the bullwhip effect in a sample of 4,689 public U.S. companies over 1974–2008. Overall, about two-thirds of firms bullwhip. The sample's mean and median bullwhips, both significantly positive, respectively measure 15.8% and 6.7% of total demand variability. Put another way, the mean quarterly standard deviation of upstream orders exceeds that of demand by $20 million. We decompose the bullwhip by information transmission lead time. Estimating the bullwhip's information-lead-time components with a two-stage estimator, we find that demand signals firms observe with more than three-quarters' notice drive 30% of the bullwhip, and those firms observe with less than one-quarter's notice drive 51%. From 1974–1994 to 1995–2008, our sample's mean bullwhip dropped by a third. DEWEY : 658 ISSN : 0025-1909 En ligne : http://mansci.journal.informs.org/content/58/5/860.abstract [article] Information transmission and the bullwhip effect : An empirical investigation [texte imprimé] / Robert L. Bray, Auteur ; Haim Mendelson, Auteur . - 2012 . - pp. 860-875. Management Langues : Anglais (eng) in Management science > Vol. 58 N° 5 (Mai 2012) . - pp. 860-875 Mots-clés : Bullwhip  effect  Martingale  model  of  forecast  evolution  Production  smoothing  Bullwhip  decomposition  Demand  uncertainty Résumé : The bullwhip effect is the amplification of demand variability along a supply chain: a company bullwhips if it purchases from suppliers more variably than it sells to customers. Such bullwhips (amplifications of demand variability) can lead to mismatches between demand and production and hence to lower supply chain efficiency. We investigate the bullwhip effect in a sample of 4,689 public U.S. companies over 1974–2008. Overall, about two-thirds of firms bullwhip. The sample's mean and median bullwhips, both significantly positive, respectively measure 15.8% and 6.7% of total demand variability. Put another way, the mean quarterly standard deviation of upstream orders exceeds that of demand by $20 million. We decompose the bullwhip by information transmission lead time. Estimating the bullwhip's information-lead-time components with a two-stage estimator, we find that demand signals firms observe with more than three-quarters' notice drive 30% of the bullwhip, and those firms observe with less than one-quarter's notice drive 51%. From 1974–1994 to 1995–2008, our sample's mean bullwhip dropped by a third. DEWEY : 658 ISSN : 0025-1909 En ligne : http://mansci.journal.informs.org/content/58/5/860.abstract