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71.
Questionnaires eliciting the absolutist vs relativist perception of poverty are administered to 1941 undergraduate students in eight countries - Bolivia, Brazil, Italy, Kenya, Laos, Sweden, Switzerland and the UK. We find that the perception of poverty expressed by a large fraction of respondents exhibits both absolutist and relativist concerns, with the former components prevailing over the latter. High-income countries exhibit a significantly more pronounced relativist attitude. Personal characteristics such as past experience of material hardship and relative standard of living play a germane role in shaping respondents’ views. 相似文献
72.
Cellini Marco Pisacane Lucio Crescimbene Massimo Di Felice Fabio 《Public Organization Review》2021,21(4):815-833
Public Organization Review - Of all the socio-economic changes caused by the Covid-19 pandemic, the disruption to workforce organizations will probably leave the largest indelible mark. The way... 相似文献
73.
Borroni Claudio Giovanni De Capitani Lucio 《AStA Advances in Statistical Analysis》2022,106(4):573-607
AStA Advances in Statistical Analysis - This paper deals with the estimation of kurtosis on large datasets. It aims at overcoming two frequent limitations in applications: first, Pearson's... 相似文献
74.
Maximum likelihood estimation of a spatial model typically requires a sizeable computational capacity, even in relatively small samples, and becomes unfeasible in very large datasets. The unilateral approximation approach to spatial model estimation (suggested in Besag 1974) provides a viable alternative to maximum likelihood estimation that reduces substantially the computing time and the storage required. In this article, we extend the method, originally proposed for conditionally specified processes, to simultaneous and to general bilateral spatial processes over rectangular lattices. We prove the estimators’ consistency and study their finite-sample properties via Monte Carlo simulations. 相似文献
75.
Lucio Bertoli-Barsotti 《Statistical Methods and Applications》2001,10(1-3):99-112
Basing on two well-known characterization results on stochastic dominance and continuous majorization relation, the ordering-preserving property-with respect to Lorenz ordering-is deduced for a wide class of families of functionals on a class of distributions. As a consequence the isotonicity ofZ Zenga concentration index is deduced as an immediate application of a characterization result, in particular of the first degree stochastic dominance relation. Moreover it is also shown that a classical inequality by Fan and Lorenz is a basic reference for the determination of a wide class of Lorenz ordering-preserving functionals. Isotonicity ofZ could also be seen as a straighforward application of Fan and Lorenz inequality. 相似文献
76.
Gossip is informal talking about colleagues. Taking a social network perspective, we argue that group boundaries and social status in the informal workplace network determine who the objects of positive and negative gossip are. Gossip networks were collected among 36 employees in a public child care organization, and analyzed using exponential random graph modeling (ERGM). As hypothesized, both positive and negative gossip focuses on colleagues from the own gossiper's work group. Negative gossip is relatively targeted, with the objects being specific individuals, particularly those low in informal status. Positive gossip, in contrast, is spread more evenly throughout the network. 相似文献
77.
Jeffrey L. Derevensky Ph.D. Rina Gupta M.A. Giuseppe Della Cioppa B.A. 《Journal of gambling studies / co-sponsored by the National Council on Problem Gambling and Institute for the Study of Gambling and Commercial Gaming》1996,12(1):49-66
Although it has been determined that gambling is a popular activity amongst the young, there seems to be a lack of studies examining developmental differences in children's gambling behavior. This study examines developmental differences in children's blackjack gambling behavior. One hundred and four students (51 males; 53 females) from grades 4, 6, and 8 completed a questionnaire examining their gambling behavior in general and individually played a computerized blackjack game with the following data being recorded: percentage of accuracy, amounts of money bet, gross winnings, percentage of wins, number of hands played, and end balance. Findings revealed few developmental differences in prevalence and frequency of gambling behavior and performance on a blackjack task. Males were found to wager greater amounts of money and have larger gross winnings than females on the blackjack task. Furthermore, males were more likely to view gambling as involving both large amounts of skill and luck, thus suggesting an illusion of control for gambling activities. The results are discussed from a cognitive developmental perspective.This research was partially supported by a grant from the McGill University Social Science Computer Committee. The authors would like to thank the administration, staff, and students in T.H. Bowes, Prince Charles, Souvenir, Gerald McShane, Our Lady of Pompei, Pierrefond Comprehensive High School, and Western Laval High School, for their participation and cooperation in this study.This is a revision of a paper presented at the Ninth International Conference on Gambling and Risk-Taking, Las Vegas, 1994. 相似文献
78.
In this paper, we estimate indices of technological catch-up for a sample of 52 countries through the FDH approach with variable
scaling parameters proposed in Kerstens and Vanden Eeckaut (1999). We show that this technique has significant advantages
for the international comparisons of productivity and, more generally, wherever the assumption of convexity for the production
set is not likely to be appropriate.
We want to thank Laurens Cherchye, Hal Fried, Kristian Kerstens and an anonymous referee for useful comments on preceding
versions of this paper. The usual disclaimer applies. Financial support from the MURST, Italy, is gratefully acknowledged. 相似文献
79.
In this paper we analyse the performances of a novel approach to modelling non-linear conditionally heteroscedastic time series
characterised by asymmetries in both the conditional mean and variance. This is based on the combination of a TAR model for
the conditional mean with a Constrained Changing Parameters Volatility (CPV-C) model for the conditional variance. Empirical
results are given for the daily returns of the S&P 500, NASDAQ composite and FTSE 100 stock market indexes. 相似文献
80.
In this paper the class of Bilinear GARCH (BL-GARCH) models is proposed. BL-GARCH models allow to capture asymmetries in the
conditional variance of financial and economic time series by means of interactions between past shocks and volatilities.
The availability of likelihood based inference is an attractive feature of BL-GARCH models. Under the assumption of conditional
normality, the log-likelihood function can be maximized by means of an EM type algorithm. The main reason for using the EM
algorithm is that it allows to obtain parameter estimates which naturally guarantee the positive definiteness of the conditional
variance with no need for additional parameter constraints. We also derive a robust LM test statistic which can be used for
model identification. Finally, the effectiveness of BL-GARCH models in capturing asymmetric volatility patterns in financial
time series is assessed by means of an application to a time series of daily returns on the NASDAQ Composite stock market
index. 相似文献