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Ohne Zusammenfassung     

Sampling method for monitoring the alternative accommodation market

Tourism is an extremely competitive industry where effective destination management is necessary to compete. One of the main destination management stakeholders is the hotel industry. Since the advent of the Internet websites that facilitate the sharing economy, the hotel industry has had to compete with an alternative accommodation market. This alternative market is difficult to monitor as there is no official data. Current research works on developing methods for calculating tourism metrics for a destination based on digital footprint with the objective of offering figures to complement official statistics. The objective of our research is to develop a method to monitor the alternative accommodation market based on data collected from Airbnb. This paper reports the results of the first step: the design of a sampling method for data scraping from this website that provides a representative sample of the accommodation offer of the Basque Country distributed through it and its prices. The results show that the length-of-stay (LOS) parameter of the queries to the website is key to obtaining a representative sample of the accommodation offered through this channel. A sampling method based on the representative values of LOS inferred from a data sample is proposed.     

Further empirical evidence on block transactions below the MBR: the Spanish market

There is a relatively unknown market for partial control or corporate influence in Spanish listed firms, where the control transaction size is below the legal threshold that triggers a mandatory tender offer, as this kind of deal looks for exercising some degree of control, but not a full control. The goal of this paper is to go further in its empirical analysis by exploring its distinguishing features, using as the criterion to define its transactions obtaining a seat in the board of directors. We find that these deals are mainly located in the segment of the market of large trades where the rules for private negotiations are easier to implement; the size of the block is relatively large and it is negotiated as a whole block. Besides, the most common buyer has no previous stake in the firm. We find no evidence that the buyers pay, in median, for a seat on the board of directors, but the variability of the premiums for those blocks is higher and shows that buyers that had no control position in the target firm pay more for being among largest shareholders (partial control) and less for not being among them (influence).     

Consistency of some tests for multivariate normality

Summary We prove that the tests of Cs?rgő (1986) and of Baringhaus and Henze (1988) for multivariate normality, both based on the empirical characteristic function, are consistent. Work partially supported by the Hungarian National Foundation for Scientific Research, Grants No. 1808/86 and 457/88.     

Change Point Analysis based on Empirical Characteristic Functions

Test procedures for detection of a change in the distribution of a sequence of independent observations based on empirical characteristic functions are developed and their limit properties are studied. Theoretical results are accompanied by a simulation study.The work of the first author was partially supported by grants GAČR 201/03/0945 and MSM 113200008     

A KKM-result and an application for binary and non-binary choice functions

Summary. By generalizing the classical Knaster-Kuratowski-Mazurkiewicz Theorem, we obtain a result that provides sufficient conditions to ensure the non-emptiness of several kinds of choice functions. This result generalizes well-known results on the existence of maximal elements for binary relations (Bergstrom [4]; Walker [16]; Tian [15]), on the non-emptiness of non-binary choice functions (Nehring [12]; Llinares and Sánchez [9]) and on the non-emptiness of some classical solutions for tournaments (top cycle and uncovered set) on non-finite sets. Received: December 29, 1999; revised version: October 18, 2001