Search results for "Collusion"
showing 10 items of 20 documents
Testing price-fixing agreements in a multimarket context: The European case of vitamin C
2007
In this paper, we suggest a method to test price-fixing agreements. Prices fixed to multiple shipments are decomposed into a set of destination market effects and time effects in order to allow us to perform an analysis of residuals. We examine the pricing behavior of vitamin C in the European destination markets of German exports. We explore two different periods: January 1991–August 1995 and September 1995–September 2001. Empirical results on the first period, which are consistent with our knowledge obtained from firms’ confessions about illegal agreements, contrast notably with those obtained on the more recent period.
A Further Note on Endogenous Spillovers in a Non-tournament R&D Duopoly
2008
This note considers the paper of Poyago-Theotoky (1999) on strategic R&D with endogenous spillovers. It proves through an example that, under R&D collusion, optimality sometimes requires either minimal or asymmetric spillovers. It also provides a simple sufficient condition for optimal spillovers between colluding firms to involve maximal spillovers (i.e., complete sharing of information).
Modalità collusive del convivere nelle organizzazioni. Un contributo empirico mediante l’Analisi Emozionale del Testo.
2009
il contributo esplora empiricamente le modalità collusive entro contesti organizzativi, attraverso l'utilizzo di un modello di lettura psicodinamica del testo.
Mafiosi, politici, pentiti
2007
La ricerca sociologica in tema di criminalità organizzata di tipo mafioso, si caratterizza per un vuoto teorico che riguarda la figura dei collaboratori di giustizia. Personaggi ingombranti per tutti – per i magistrati, per i politici, per i mafiosi irriducibili, per i loro stessi familiari – sembra che per gli ex-uomini d’onore non vi siano possibilità di reinserimento in una condizione di vita normale. Nonostante la loro riconosciuta utilità, difficilmente si riesce a non considerarli ancora come mafiosi e a non nutrire nei loro confronti perplessità e sospetti. Questo, e altro, emerge dai risultati di una indagine sulla percezione sociale dei collaboratori di giustizia in Sicilia, che me…
Environmental taxation, information precision, and information sharing
2022
We analyze how environmental taxes should be optimally levied when the regulators and firms face costs uncertainties in a Stackelberg-Cournot game. We allow linear-quadratic payoffs functions coupled with an affine information structure encompassing common and private information with noisy signals. In the first period, the regulator chooses the intensity of emissions taxes in order to reduce externalities. In the second period, facing industry-related and firm-specific shocks, firms compete in the marketplace as Cournot rivals and choose outputs. We show that, given costs uncertainties with non-uniform quality of signals across firms, the regulator sets differentiated tax policy. We also e…
Are Low Prices Compromises Collusion Guarantees? An Experimental Analysis of Price Matching Policies
2001
In this paper we experimentally test the ability of Price-Matching Guarantees (PMG) to rise prices above the competitive level. We implement three different treatments of symmetric duopolies to check the effect of PMG both as a market institution and as a business strategy. In the absence of any low-price guarantee, prices get close to the Bertrand-Nash equilibrium although in the 50 rounds of the experiment no full convergence is obtained. The existence of PMG as an institution in a market where firms decide only about prices results in a clear collusive outcome as all markets quickly and fully converge to the collusive prediction. If we allow subjects to decide whether they adopt price ma…
Secure Group Communication Using Fractional Public Keys
2010
Published version of a paper presented at the ARES '10 International Conference on Availability, Reliability, and Security (c) 2010 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/ republishing this material for advertising or promotional purposes, creating new collective works for resale or redistribution to servers or lists, or reuse of any copyrighted components of this work in other works. Paper also available from the publisher:http://dx.doi.org/10.1109/ARES.2010.13 In this paper, we present the novel concept of fractional public keys and an efficient zero-round multi-party Diffie-Hellman key agreement sc…
Mafia e comitati di affari. Edilizia, appalti ed energie rinnovabili in provincia di Trapani
2011
“Me lo offre un caffè?”: Una ricerca qualitativa sulla ‘collusione di strada’ a Palermo [“Would you offer me a coffee?”: A qualitative research on ‘s…
2016
Il presente lavoro si propone come studio pilota sulla collusione in terre di mafia. I suoi oggetti di interesse sono Palermo e i “suoi” posteggiatori “abusivi”, figure oggi aggrovigliate al panorama geo-politico della città di cui parlano le strade, gli accadimenti mediatici e la cronaca giudiziaria del capoluogo siciliano. Ci siamo in tal senso chiesti: chi sono questi soggetti sociali? E quali sono le motivazioni della loro presenza ipertrofica in una città come Palermo? Grazie ai dati raccolti attraverso 21 “interviste da strada”, possiamo affermare che il problema è complesso e, come afferma Leoluca Orlando, riguarda posteggiatori e posteggianti, in uno stretto intreccio di collusioni …
The manipulation of Euribor: An analysis with machine learning classification techniques
2022
The manipulation of the Euro Interbank Offered Rate (Euribor) was an affair which had a great impact on in ternational financial markets. This study tests whether advanced data processing techniques are capable of classifying Euribor panel banks as either manipulating or non-manipulating on the basis of patterns found in quotes submissions. For this purpose, panel banks’ daily contributions have been studied and monthly variables obtained that denote different contribution patterns for Euribor panel banks. Thus, in accordance with the court verdict, banks are categorized as manipulating and non-manipulating and Machine Learning classification techniques such as Supervised Learning, Anomaly …