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31.
A de Finetti-Kolmogoroff-Nagumo type integral representation theorem for generalized means on masses
We point out that the Consistency, Continuity and Associativity properties of an extended realvalued functionalm on masses are the basic notions to get a de Finetti-Kolmogoroff-Nagumo type integral representation ofm.
Work performed under the auspices of the National Group for Sthocastic Models and Mathematical Statistics (M.R.S.T. 40%) and G.N.A.F.A. of C.N.R. 相似文献
Riassunto Come è noto il teorema di de Finetti-Kolmogoroff-Nagumo formisce una rappresentazione integrale di particolari funzionali reali, detti medie, definiti per funzioni di ripartizione che distribuiscono l'intera massa su un prefissato intervallo chiuso e limitato dell'asse reale.Nel lavoro [2] gli autori hanno esteso la nozionc di media, considerata ancora come funzionale reale, dalle funzioni di ripartizione alle masse (misure finitamente additive limitate e non negative). In questo modo, estendendo ad essa le usuali proprictà (internalità, associatività, etc.), sono riusciti a provare un teorema di rappresentazione integrale analogo a quello di de Finctti-Kolmogoroff-Nagumo per medie continue ed associative definite su opportuni insiemi di masse tight (cio prive di masse aderenti a – e+).In questo lavoro, naturale prosccuzione del preccedente, si prendono invecc in considerazione medic generalizzate (cioè medie che possono assumere valori reali oppure anche i valori – c+) e masse non neccssariamente tight. Si fa allora vedere che le nozioni di consistenza, continuità e associatività per un funzionale a valori nella retta compatta e definito sulle masse non nulle, sono condizioni caratteristiche per ottencre una sua rappresentazione integrale del tipo de Finctti-Kolmogoroff-Nagumo. Si prova inoltre che, a differenza della media ariumetica, le medic generalizzate continue ed associative possono assumere valori non reali solamente su opportune masse non tight.
Work performed under the auspices of the National Group for Sthocastic Models and Mathematical Statistics (M.R.S.T. 40%) and G.N.A.F.A. of C.N.R. 相似文献
32.
Bruno De Borger 《European Journal of Political Economy》1997,13(4):765-781
The purpose of this paper is to investigate the impact of externalities on pricing decisions by a public or a private regulated firm selling both final and intermediate goods. The externalities generate feedbacks in demand that affect both consumers and producers. The model is very general in that it does not impose constant returns to scale on private production, allows for distributional effects of both the publicly determined prices and private sector profits, and captures the general equilibrium effects of public pricing. Socially optimal pricing rules are derived, and the relation of the results with previous models of pricing in the presence of externalities is investigated. 相似文献
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In 2001, the European Commission proposed replacing the currentsystem of taxation of multinational companies by the taxationof a consolidated base, computed at the level of all the Europeanentities of a multinational enterprise, and then distributedfor taxation purposes among the various jurisdictions in whichthese entities operate, according to pre-established criteria.In this article, we propose a discussion, especially focusingon two related issues, the choice of the formula and the compositionof the consolidating areaeither the entire European Union(EU) or some Member States within an Enhanced Cooperation Agreement,as well as on their impact on the size and distribution of taxrevenue and economic activity, and on the intensity of tax competition.Our tentative policy conclusion is that the reform deservessupport provided that (i) the formula puts emphasis on criteriathat the firm may not too easily manipulate, (ii) the activitiesof the multijurisdictional enterprise are enough mobile, (iii)the consolidation is made compulsory within the consolidatingarea and (iv) the consolidating area protects its capacity toactually levy tax by adopting a crediting system vis-à-visthe rest of the world. (JEL code: H32, H73, H87) 相似文献
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Social media? Get serious! Understanding the functional building blocks of social media 总被引:1,自引:0,他引:1
Jan H. Kietzmann Kristopher Hermkens Ian P. McCarthy Bruno S. Silvestre 《Business Horizons》2011,(3):156
Traditionally, consumers used the Internet to simply expend content: they read it, they watched it, and they used it to buy products and services. Increasingly, however, consumers are utilizing platforms—such as content sharing sites, blogs, social networking, and wikis—to create, modify, share, and discuss Internet content. This represents the social media phenomenon, which can now significantly impact a firm's reputation, sales, and even survival. Yet, many executives eschew or ignore this form of media because they don’t understand what it is, the various forms it can take, and how to engage with it and learn. In response, we present a framework that defines social media by using seven functional building blocks: identity, conversations, sharing, presence, relationships, reputation, and groups. As different social media activities are defined by the extent to which they focus on some or all of these blocks, we explain the implications that each block can have for how firms should engage with social media. To conclude, we present a number of recommendations regarding how firms should develop strategies for monitoring, understanding, and responding to different social media activities. 相似文献
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ABSTRACT Creating meaningful brand names for international markets can be particularly challenging because translation may distort intended meaning. To mitigate this issue, marketers can imbue meaning into a brand name with sound symbolism, which refers to the direct linkage between sound and meaning. The aim of this article is to examine whether sound symbolism effects are maintained after translating a brand name from English to Hindi. Results of an empirical study with Hindi-speaking subjects indicate that the sound–meaning relationship can persist after translation. A primary contribution is that sound symbolism can help create global brand names with consistent meaning across languages. 相似文献
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The purpose of this paper is to elaborate on previous research that deals with the implications of alternative housing concepts for the estimation of the welfare effects of housing programs. We compare one housing concept, which defines housing in terms of a composite good housing services with an alternative in which housing is treated as a bundle of attributes. We extend the analysis in the literature by concentrating on welfare measures that are applicable to a much broader class of government programs than those that have been discussed before. We focus in the Hicksian surplus measures which are particularly suited to handle structure in which constraints on quantity are impused. In the theoretical sections we rigorously show that the Hicksian surplus measures of welfare change based on the composite good housing services will be biased whenever a housing program imposes restrictions on the consumption of attributes. The direction of the bias depends on the nature of the program. Empirical work confirms the predictions of the theoretical analysis. 相似文献
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