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1.
We use a simple graphical approach to represent Social Welfare Functions that satisfy Independence of Irrelevant Alternatives
and Anonymity. This approach allows us to provide simple and illustrative proofs of May's Theorem, of variants of classic
impossibility results, and of a recent result on the robustness of Majority Rule due to Maskin (1995). In each case, geometry
provides new insights on the working and interplay of the axioms, and suggests new results including a new characterization
of the entire class of Majority Rule SWFs, a strengthening of May's Theorem, and a new version of Maskin's Theorem.
Received: 31 July 1999/Accepted: 27 March 2001 相似文献
2.
We study the problem of ranking sets of options in terms of freedom of choice. We propose a framework in which both the diversity of the options and the preferences of the agent over the options do play a role. We formulate some axioms that reflect these two aspects of freedom and we study their logical implications. Two different criteria for ranking sets are characterized, which generalize some of the rankings proposed so far in the literature. 相似文献
3.
Oja (1983) examined various ways of measuring location, scatter, skewness, and kurtosis for multivariate distributions. Among other measures of location, he introduced a generalised median known in this paper under the name of the Oja median. In our study of the existence of that median, we show that Oja's definition can only be applied to distributions having a mean. In dimension d θ 2, we establish that the usual method of extension breaks down, which raises the question of the validity of the concept as a notion of median. Two fundamental theoretical properties of that median are also considered: uniqueness and consistency. 相似文献
4.
Antonio Strati 《Human Relations》1998,51(11):1379-1402
This article describes organizational symbolismfrom a sociology of knowledge perspective and considersboth the theoretical and extra-theoretical bases of thesymbolic approach. It illustrates the distinctive principles of the symbolic approach withrespect to other methods used in the study oforganizations, the concepts on which it is based, andthe organizational issues on which it has shedsignificant light. Symbolist studies of organizations haverefocused scholarly attention on the multidisciplinaryunderstanding of the logos, ethos, and pathos oforganizational life. They have done so by stressing the production of knowledge tout court, rather thanconcerning themselves with the applicability of theorganizational knowledge acquired by this approach formanagerial purposes. Organizational symbolism is described in the article as a fluctuatingand emerging social construction whose growth and spreadhas been fostered by support within academia. 相似文献
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Abstract. In this paper a new algorithm is proposed in order to produce an automatic dynamic compound estimator of the labour force based on an interactive scheme. The proposed algorithm, JARES, is based on the probability estimator of Jaynes based on the notion of maximum entropy of a given probability distribution with a constraint on the average of an external information. The iterative scheme is based on the solution of a set of linear equations which represent the algebraic relationships between the weights and the estimates. 相似文献
9.
Igor Esnaola Albert Ses Iratxe Antonio‐Agirre Lorea Azpiazu 《Journal of research on adolescence》2020,30(Z1):100-114
The purpose of this research was to analyze the development of self‐concept during adolescence. Participants included 484 teenagers (226 boys and 258 girls) from middle‐class families in the Basque Country region of Spain (Mage = 14.99, SD = 1.81 in Time 1 and Mage = 15.64, SD = 1.80 in Time 2). Longitudinal analysis found differences in the general school dimension. Six dimensions (math, verbal, general school, physical abilities, parent relationships and same‐sex relationships) reported a linear trend with a decreasing monotonic pattern; self‐esteem fit a cubic trend and physical appearance a quadratic trend line. Males showed higher means in self‐esteem, math, physical abilities, physical appearance, emotional stability and parent relationships; and females had higher values in verbal and general school. 相似文献
10.
Nuria Infante-Torres Milagros Molina-Alarcón Ana Rubio-Álvarez Julián Rodríguez-Almagro Antonio Hernández-Martínez 《Women and birth : journal of the Australian College of Midwives》2018,31(5):e318-e324