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531.
Francesco De Sinopoli 《Games and Economic Behavior》2001,34(2):270
In this paper we prove that for generic (noncooperative) voting games under plurality rule the set of equilibria that induce a mixed distribution over the outcomes (i.e., with two or more candidates elected with positive probability) is finite and, furthermore, each of these equilibria is regular. From that we deduce the finiteness of the set of equilibrium distributions over outcomes. Furthermore we offer an example (S. Govindan and A. McLennan, 1997, “On the Generic Finiteness of Equilibrium Outcome Distributions in Game Forms,” mimeo) that shows the impossibility of extending such results to a general framework, even just to voting games. Journal of Economic Literature Classification Numbers: C72, D72. 相似文献
532.
On loss functions and ranking forecasting performances of multivariate volatility models 总被引:1,自引:0,他引:1
The ranking of multivariate volatility models is inherently problematic because when the unobservable volatility is substituted by a proxy, the ordering implied by a loss function may be biased with respect to the intended one. We point out that the size of the distortion is strictly tied to the level of the accuracy of the volatility proxy. We propose a generalized necessary and sufficient functional form for a class of non-metric distance measures of the Bregman type which ensure consistency of the ordering when the target is observed with noise. An application to three foreign exchange rates is provided. 相似文献
533.
Advances in information technology (IT) have prompted tremendous growth in security issues for companies. Increasingly, cyberattacks represent a threat to companies and national security; to prevent them, firms should routinely perform risk assessments of their IT infrastructure and employees. This article highlights the importance of open-source intelligence (OSINT) tools in conducting risk assessments to prevent cyberattacks. More specifically, we performed a vulnerability assessment on the critical infrastructure of a company operating on the U.S. electrical grid. We successfully profiled the company’s network software, hardware, and key IT personnel—using OSINT—and detailed potential vulnerabilities associated with these findings. The results of our study provide empirical evidence for the efficacy of OSINT in improving the security posture of organizations. Our research findings were subsequently used to produce tactical and strategic recommendations for organizations based on the use of OSINT to identify vulnerabilities, mitigate risks, and formulate more robust security policies to prevent cyberattacks. 相似文献
534.
Leoncini Riccardo Marzucchi Alberto Montresor Sandro Rentocchini Francesco Rizzo Ugo 《Small Business Economics》2019,52(4):891-904
Small Business Economics - This paper investigates the relationship between green/non-green technologies and firm growth. By combining the literature on eco-innovations, industrial organisation and... 相似文献
535.
Francesco Pizzitutti Stephen J. Walsh Ronald R. Rindfuss Reck Gunter Diego Quiroga Rebecca Tippett 《Journal of Sustainable Tourism》2017,25(8):1117-1137
This paper presents a decision-support system based on a system dynamics model designed to examine tourism management in the Galapagos Islands. A participatory approach was used to integrate the views of multiple stakeholders in the Galapagos Islands and to build an understandable, graphical representation of the impacts of tourism and residential population growth. Each subsystem is examined through hypotheses involving three scenarios of tourism growth that are associated with different residential population expansions. A number of integrative and linked social-ecological effects in our model have been shown to severely shock the natural environment of the Galapagos and saturate the capacity of several socio-economic subsystems. Major concerns of the expanding human dimension in the Galapagos are represented by (1) the growing number of introduced species that threaten the Islands’ unique natural environment, and (2) the rapid saturation of the Galapagos National Park's tourism reception capacity. The model relies upon real data to specify rules, relationships, and rates of exchange that are derived through statistical functions and/or functions specified in theory or practice. The presented decision-support system is a quantitative scenario-planning tool that can be used by policy-makers to achieve an enhanced understanding of the Galapagos Islands as a coupled human–natural system. 相似文献
536.
This article studies the dynamic response of labor input to neutral technology shocks. It uses benchmark dynamic, stochastic, general equilibrium models enriched with labor market search and matching frictions and investment‐specific technological progress that enables a new, agnostic, identification scheme based on sign restrictions on a structural vector autoregression (SVAR). The estimation supports an increase of labor input in response to neutral technology shocks. This finding is robust across different perturbations of the SVAR model. 相似文献
537.
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539.
Emanuel Bagna Mauro Bini Ron Bird Francesco Momentè Francesco Reggiani 《Journal of International Financial Management & Accounting》2010,21(2):161-186
The scope of this is paper is to provide new empirical evidence on the value relevance of employee stock options (ESOs) in Europe. We show, empirically, that the market participants when pricing a firm's equity place approximately the same valuation weights on the ESO‐deferred compensation expense (the so called “ESO asset”) and the compensation option liability (the so called “ESO liability”). Our empirical findings support the theoretical work of Ohlson and Penman who suggest that the deferred compensation expense be treated as a contra‐liability. The second contribution of our work rests on the nature of the ESO expense. We show that the distinction between persistent and non‐persistent ESO expenses is of critical importance for the market participants. Accordingly, an improved accounting disclosure should assist the investors in assessing the long‐term goals of the ESO plans at the firm level. 相似文献
540.
Monica Billio Roberto Casarin Francesco Ravazzolo Herman K. Van Dijk 《Journal of Applied Econometrics》2016,31(7):1352-1370
The proposed panel Markov‐switching VAR model accommodates changes in low and high data frequencies and incorporates endogenous time‐varying transition matrices of country‐specific Markov chains, allowing for interconnections. An efficient multi‐move sampling algorithm draws time‐varying Markov‐switching chains. Using industrial production growth and credit spread data, several important data features are obtained. Three regimes appear, with slow growth becoming persistent in the eurozone. Turning point analysis indicates the USA leading the eurozone cycle. Amplification effects influence recession probabilities for Eurozone countries. A credit shock results in temporary negative industrial production growth in Germany, Spain and the USA. Core and peripheral countries exist in the eurozone. Copyright © 2016 John Wiley & Sons, Ltd. 相似文献