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91.
Nancy Christie Bruno Dyck Janet Morrill Ross Stewart 《Business and Society Review》2013,118(3):383-411
The purpose of this article is to discuss and provide an alternative, less materialist–individualist approach to interpret the four assumptions of generally accepted accounting principles: economic entity, unit measure, periodic reporting, and going concern. The article draws from and builds on arguments first developed by Weber and Aristotle to demonstrate how a materialist–individualist moral point of view influences the conventional interpretation of the four basic assumptions for generally accepted accounting principles. We then propose an ideal‐type conceptual framework upon which to critique mainstream accounting theory and to develop alternative accounting theory that balances multiple forms of well‐being (including financial, but also social, physical, spiritual, and ecological well‐being) for multiple stakeholders (including owners, employees, customers, suppliers, competitors, neighbors, future generations, and so forth). 相似文献
92.
The impact of the media on people's risk perception was assessed by comparing risk ratings obtained from African villagers without access to the media with risk ratings obtained from African city-dwellers with access to the media and risk ratings obtained from French participants. The overall mean risk judgment observed among the Togolese villagers was lower than the mean rating observed among the Togolese city-dwellers, and lower than the mean rating observed among the French. The linear association observed between the Togolese villagers' ratings and the Togolese city-dweller ratings and the French ratings was moderate. The impact of the media on risk perception was estimated to be an increase of about 15% of the overall mean ratings, and to about 31% of the variance of the mean ratings. This impact was independent of educational level. 相似文献
93.
The purpose of this paper is to develop influence diagnostics for AR(1) models under the innovative and the data perturbation schemes. There are four main contributions. First, we derive analytical expressions for the slope and curvature statistics. Second, we establish a relationship between the slope and curvature showing that the standardised slope and standardised curvature are equal for the innovative perturbation scheme, and these vectors are nearly identical for several values of the autoregressive parameter, for the data perturbation scheme. Third, we present a connection between the influence statistics and the tests for outlier detection. Fourth, for the innovative perturbation scheme, we derive the asymptotic distribution of a new influence statistic, whereas for the data perturbation scheme, the distribution of the influence statistics is obtained via Monte Carlo simulation. We additionally discuss practical guidelines for the use of local influence statistics, which are illustrated on a chemical process data set. 相似文献
94.
95.
Quantile regression models are a powerful tool for studying different points of the conditional distribution of univariate response variables. Their multivariate counterpart extension though is not straightforward, starting with the definition of multivariate quantiles. We propose here a flexible Bayesian quantile regression model when the response variable is multivariate, where we are able to define a structured additive framework for all predictor variables. We build on previous ideas considering a directional approach to define the quantiles of a response variable with multiple outputs, and we define noncrossing quantiles in every directional quantile model. We define a Markov chain Monte Carlo (MCMC) procedure for model estimation, where the noncrossing property is obtained considering a Gaussian process design to model the correlation between several quantile regression models. We illustrate the results of these models using two datasets: one on dimensions of inequality in the population, such as income and health; the second on scores of students in the Brazilian High School National Exam, considering three dimensions for the response variable. 相似文献
96.
Test statistics for checking the independence between the innovations of several time series are developed. The time series models considered allow for general specifications for the conditional mean and variance functions that could depend on common explanatory variables. In testing for independence between more than two time series, checking pairwise independence does not lead to consistent procedures. Thus a finite family of empirical processes relying on multivariate lagged residuals are constructed, and we derive their asymptotic distributions. In order to obtain simple asymptotic covariance structures, Möbius transformations of the empirical processes are studied, and simplifications occur. Under the null hypothesis of independence, we show that these transformed processes are asymptotically Gaussian, independent, and with tractable covariance functions not depending on the estimated parameters. Various procedures are discussed, including Cramér–von Mises test statistics and tests based on non‐parametric measures. The ranks of the residuals are considered in the new methods, giving test statistics which are asymptotically margin‐free. Generalized cross‐correlations are introduced, extending the concept of cross‐correlation to an arbitrary number of time series; portmanteau procedures based on them are discussed. In order to detect the dependence visually, graphical devices are proposed. Simulations are conducted to explore the finite sample properties of the methodology, which is found to be powerful against various types of alternatives when the independence is tested between two and three time series. An application is considered, using the daily log‐returns of Apple, Intel and Hewlett‐Packard traded on the Nasdaq financial market. The Canadian Journal of Statistics 40: 447–479; 2012 © 2012 Statistical Society of Canada 相似文献
97.
On Recalling ANT 总被引:2,自引:0,他引:2
Bruno Latour 《The Sociological review》1998,46(S):15-25
This paper explores one after the other the four difficulties of actor-network theory, that is the words 'actor', 'network' and 'theory'—without forgetting the hyphen. It tries to refocus the originality of what is more a method to deploy the actor's own world building activities than an alternative social theory. Finally, it sketches some of its remaining potential. 相似文献
98.
A typical problem of the seasonal adjustment procedures arises when the series to be adjusted is subject to structural breaks.
In fact, using the full span of the series can result in a biased estimation of the “true” seasonally adjusted series, with
unclear evidence showed by the usual diagnostic tests. In these cases the researcher has to decide where to cut-off the observed
series to obtain a homogeneous span; this is generally performed by a simple visual inspection of the graph of the series
and/or using a-priori information about the occurrence of the break. In this paper we propose a statistical criterion based
on a distance measure between filters, evaluating its performance with Monte Carlo experiments.
The first results of this work have been presented at the XL scientific meeting of the Italian statistical society, Florence,
26–28 April 2000, benefiting of the discussion arisen there; a preliminary version of this paper circulated as ISAE working
paper No. 21/2001 with the title “The Choice of Time Interval in Seasonal Adjustment: Characterization and Tools”. We thank
an anonymous referee for precious suggestions. The authors are solely responsible of any remaining error. 相似文献
99.
A spatiotemporal model for Mexico City ozone levels 总被引:9,自引:1,他引:8
Gabriel Huerta Bruno Sansó Jonathan R. Stroud 《Journal of the Royal Statistical Society. Series C, Applied statistics》2004,53(2):231-248
Summary. We consider hourly readings of concentrations of ozone over Mexico City and propose a model for spatial as well as temporal interpolation and prediction. The model is based on a time-varying regression of the observed readings on air temperature. Such a regression requires interpolated values of temperature at locations and times where readings are not available. These are obtained from a time-varying spatiotemporal model that is coupled to the model for the ozone readings. Two location-dependent harmonic components are added to account for the main periodicities that ozone presents during a given day and that are not explained through the covariate. The model incorporates spatial covariance structure for the observations and the parameters that define the harmonic components. Using the dynamic linear model framework, we show how to compute smoothed means and predictive values for ozone. We illustrate the methodology on data from September 1997. 相似文献
100.
Ery Arias-Castro Bruno Pelletier Venkatesh Saligrama 《Journal of nonparametric statistics》2018,30(2):448-471
Despite a substantial literature on nonparametric two-sample goodness-of-fit testing in arbitrary dimensions, there is no mention there of any curse of dimensionality. In fact, in some publications, a parametric rate is derived. As we discuss below, this is because a directional alternative is considered. Indeed, even in dimension one, Ingster, Y. I. [(1987). Minimax testing of nonparametric hypotheses on a distribution density in the l_p metrics. Theory of Probability & Its Applications, 31(2), 333–337] has shown that the minimax rate is not parametric. In this paper, we extend his results to arbitrary dimension and confirm that the minimax rate is not only nonparametric, exhibits but also a prototypical curse of dimensionality. We further extend Ingster's work to show that the chi-squared test achieves the minimax rate. Moreover, we show that the test adapts to the intrinsic dimensionality of the data. Finally, in the spirit of Ingster, Y. I. [(2000). Adaptive chi-square tests. Journal of Mathematical Sciences, 99(2), 1110–1119], we consider a multiscale version of the chi-square test, showing that one can adapt to unknown smoothness without much loss in power. 相似文献