Rudolph Lepke's Kunst-Auctions-Haus : ein Beitrag zur Geschichte des Berliner Kunsthandels /

Mode of access: Internet.

Le trésor de la curiosité : tiré des catalogues de ventes de tableaux, dessins, estampes, livres, marbres, bronzes, ivoires, terres cuites, vitraux, médailles, armes, porcelaines, meubles, émaux, lacques et autres objets d'art /

Mode of access: Internet.

[Catalogues of sales]

Description based on: 6th Oct. 1975/7th Oct. 1975.

Catalogue des tableaux anciens des écoles espagnole, italienne, flamande & hollandaise : composant la galerie de M. Le Mis. de Salamanca, vente en son Hôtel, à Paris, rue de la Victoire, 50, les lundi 3, mardi 4, mercredi 5 et jeudi 6 juin a deux heures précises; Charles Pillet, commissaire-priseur.

Mode of access: Internet.

Citation auctions as a method to improve selection of scientific papers

This paper describes the basis of citation auctions as a new approach to selecting scientific papers for publication. Our main idea is to use an auction for selecting papers for publication through - differently from the state of the art - bids that consist of the number of citations that a scientist expects to receive if the paper is published. Hence, a citation auction is the selection process itself, and no reviewers are involved. The benefits of the proposed approach are two-fold. First, the cost of refereeing will be either totally eliminated or significantly reduced, because the process of citation auction does not need prior understanding of the paper's content to judge the quality of its contribution. Additionally, the method will not prejudge the content of the paper, so it will increase the openness of publications to new ideas. Second, scientists will be much more committed to the quality of their papers, paying close attention to distributing and explaining their papers in detail to maximize the number of citations that the paper receives. Sample analyses of the number of citations collected in papers published in years 1999-2004 for one journal, and in years 2003-2005 for a series of conferences (in a totally different discipline), via Google scholar, are provided. Finally, a simple simulation of an auction is given to outline the behaviour of the citation auction approach

Egalitarian behaviour in multi unit combinatorial auctions

En entornos donde los recursos son precederos y la asignación de recursos se repite en el tiempo con el mismo conjunto o un conjunto muy similar de agentes, las subastas recurrentes pueden ser utilizadas. Una subasta recurrente es una secuencia de subastas donde el resultado de una subasta puede influenciar en las siguientes. De todas formas, este tipo de subastas tienen problemas particulares cuando la riqueza de los agentes esta desequilibrada y los recursos son precederos. En esta tesis se proponen algunos mecanismos justos o equitativos para minimizar los efectos de estos problemas. En una subasta recurrente una solución justa significa que todos los participantes consiguen a largo plazo sus objetivos en el mismo grado o en el grado más parecido posible, independientemente de su riqueza. Hemos demostrado experimentalmente que la inclusión de justicia incentiva a los bidders en permanecer en la subasta minimizando los problemas de las subastas recurrentes.

Modeling bidding competitiveness and position performance in multi-attribute construction auctions

Currently, multi-attribute auctions are becoming widespread awarding mechanisms for contracts in construction, and in these auctions, criteria other than price are taken into account for ranking bidder proposals. Therefore, being the lowest-price bidder is no longer a guarantee of being awarded, thus increasing the importance of measuring any bidder’s performance when not only the first position (lowest price) matters. Modeling position performance allows a tender manager to calculate the probability curves related to the more likely positions to be occupied by any bidder who enters a competitive auction irrespective of the actual number of future participating bidders. This paper details a practical methodology based on simple statistical calculations for modeling the performance of a single bidder or a group of bidders, constituting a useful resource for analyzing one’s own success while benchmarking potential bidding competitors.

Quick abnormal-bid-detection method for construction contract auctions

Noncompetitive bids have recently become a major concern in both public and private sector construction contract auctions. Consequently, several models have been developed to help identify bidders potentially involved in collusive practices. However, most of these models require complex calculations and extensive information that is difficult to obtain. The aim of this paper is to utilize recent developments for detecting abnormal bids in capped auctions (auctions with an upper bid limit set by the auctioner) and extend them to the more conventional uncapped auctions (where no such limits are set). To accomplish this, a new method is developed for estimating the values of bid distribution supports by using the solution to what has become known as the German Tank problem. The model is then demonstrated and tested on a sample of real construction bid data, and shown to detect cover bids with high accuracy. This paper contributes to an improved understanding of abnormal bid behavior as an aid to detecting and monitoring potential collusive bid practices.

A Multilevel Model with Time Series Components for the Analysis of Tribal Art Prices

In the present work we perform an econometric analysis of the Tribal art market. To this aim, we use a unique and original database that includes information on Tribal art market auctions worldwide from 1998 to 2011. In Literature, art prices are modelled through the hedonic regression model, a classic fixed-effect model. The main drawback of the hedonic approach is the large number of parameters, since, in general, art data include many categorical variables. In this work, we propose a multilevel model for the analysis of Tribal art prices that takes into account the influence of time on artwork prices. In fact, it is natural to assume that time exerts an influence over the price dynamics in various ways. Nevertheless, since the set of objects change at every auction date, we do not have repeated measurements of the same items over time. Hence, the dataset does not constitute a proper panel; rather, it has a two-level structure in that items, level-1 units, are grouped in time points, level-2 units. The main theoretical contribution is the extension of classical multilevel models to cope with the case described above. In particular, we introduce a model with time dependent random effects at the second level. We propose a novel specification of the model, derive the maximum likelihood estimators and implement them through the E-M algorithm. We test the finite sample properties of the estimators and the validity of the own-written R-code by means of a simulation study. Finally, we show that the new model improves considerably the fit of the Tribal art data with respect to both the hedonic regression model and the classic multilevel model.

Auctions law and practice

This is the new edition of the leading work on the law and practice of auctions. The book looks at every aspect of auction practice from the economics of auction sales and restrictions on trading to criminal and other liabilities of the auctioneer. There is also a chapter on VAT. There have been important recent developments in the field of consumer protection and the book has been substantially revised to reflect these. In addition to general updating the new edition considers the practice of online auctions for the first time. There is also a section on looted art . The book continues to draw on case law from other common law jurisdictions.

Autoethnography : critical appreciation of an emerging art

In this article, the author discusses how she applied autoethnography in a study of the design of hypermedia educational resources and shows how she addressed problematic issues related to autoethnographic legitimacy and representation. The study covered a 6-year period during which the practitioner’s perspective on the internal and external factors influencing the creation of three hypermedia CD-ROMs contributed to an emerging theory of design. The author highlights the interrelationship between perception and reality as vital to qualitative approaches and encourages researchers to investigate their reality more fully by practicing the art of autoethnography.