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61.
Non-linear SUR and ITSUR techniques are proposed for the estimation of the APT and the CAPM when the factors are observed. These techniques estimate all of the parameters of the model simultaneously and directly impose the model's non-linear parameter restrictions. 相似文献
62.
63.
This paper presents an analysis of bluffing in labor negotiations from legal, economic, and ethical perspectives. It is argued that many forms of bluffing in labor negotiations are legal and economically advantageous, but that they typically constitute lying. Nevertheless it is argued that it is generally morally acceptable to bluff given a typical labor-management relationship where one's negotiating partner is familiar with and most likely employing bluffing tactics him/herself. We also consider whether it is an indictment of our present negotiating practices and our economic system as a whole that, given the harsh realities of the marketplace, bluffing is usually morally acceptable. 相似文献
64.
We investigate whether dividends convey information about the risk of a company by examining the reaction of implied volatility in the option market to the announcement of a dividend initiation. Implied volatility decreases after the announcement and the magnitude of the decline in volatility is positively related to both the magnitude of cumulative abnormal returns (CAR) in the equity markets and the size of the dividend. Additionally, firms with weaker (stronger) corporate governance experience larger (smaller) declines in implied volatility. Cross sectional analysis shows that a one-standard deviation decline in measures of risk increases the 2-day CAR by 74–137 basis points. Our results suggest that dividend initiations signal declining firm risk. 相似文献
65.
Jenny A. Minier 《Southern economic journal》2001,67(4):996-1009
A frequent assertion of economists and political scientists is that democracy is a normal good, or that higher incomes lead citizens to “desire” more democracy. This assertion, however, has been difficult to test directly. I introduce a data set of democratic movements, and use it to address the relationship between income and the demand for democracy. Logit analysis of the estimated probability that a democratic movement occurs in an authoritarian country suggests that this probability is increasing in income per capita up to a level of approximately $5000. Unlike previous results, this does not suggest that all countries will become democratic once they pass some income threshold. 相似文献
66.
In this paper, the authors respond to comments made by Franke and Andrews on their earlier paper, published in issue 22(1) of the International Journal of Advertising. 相似文献
67.
Cannabis, Alcohol and Cigarettes: Substitutes or Complements? 总被引:1,自引:0,他引:1
This paper uses individual level data from the National Drug Strategy Household Surveys to estimate the price responsiveness of participation in cannabis, alcohol and cigarette use. In addition to own price effects, we estimate cross price effects and the impact of decriminalizing cannabis use. We find that participation is responsive to own prices. There is some evidence that cannabis is a substitute for alcohol and a complement to cigarettes, and that alcohol and cigarettes are complements. The liberalization of cannabis laws in South Australia may have led to a temporary increase in cannabis use among the over-30 age group. 相似文献
68.
Conceptual Knowledge Markup Language: An introduction 总被引:1,自引:0,他引:1
Conceptual Knowledge Markup Language (CKML) is an application of XML. Earlier versions of CKML followed rather exclusively
the philosophy of Conceptual Knowledge Processing (CKP), a principled approach to knowledge representation and data analysis
that “advocates methods and instruments of conceptual knowledge processing which support people in their rational thinking,
judgment and acting and promote critical discussion”. The new version of CKML continues to follow this approach, but also
incorporates various principles, insights and techniques from Information Flow (IF), the logical design of distributed systems.
Among other things, this allows diverse communities of discourse to compare their own information structures, as coded in
logical theories, with that of other communities that share a common generic ontology. CKML incorporates the CKP ideas of
concept lattice and formal context, along with the IF ideas of classification (= formal context), infomorphism, theory, interpretation
and local logic. Ontology Markup Language (OML), a subset of CKML that is a self-sufficient markup language in its own right,
follows the principles and ideas of Conceptual Graphs (CG). OML is used for structuring the specifications and axiomatics
of metadata into ontologies. OML incorporates the CG ideas of concept, conceptual relation, conceptual graph, conceptual context,
participants and ontology. The link from OML to CKML is the process of conceptual scaling, which is the interpretive transformation
of ontologically structured knowledge to conceptual structured knowledge.
This revised version was published online in August 2006 with corrections to the Cover Date. 相似文献
69.
This article examines friendships and social networks in the context of amateur women’s football. Studies of intimacies and friendships tend to situate women’s same-sex friendships around emotional support. The aim of this research seeks to account for more depth in understanding diversity in female friendships. The traditionally masculine (football) environment is peculiarly distinctive because it contrasts with traditional spaces found in private, domestic context that have traditionally associated with the formation and negotiation of ‘feminine’ friendship identities. Utilising 10 narrative interviews, the paper examines social and friendship networks in two main areas. Firstly, although non-traditional social groupings were evident, it was apparent that some participants had to negotiate a dual private/public role. Secondly, there were friendships based on sociability and these were integral to the connectedness of groups not defined by conventionally gendered roles, defined by emotional ties, but instead on collective interest focused around playing sport. These groupings are of interest because they are contrary to conventionality that frame emotional femininity, and foreground social activities that accentuate cultural complexities rather than confine friendship groups in terms of either masculine or feminine cultural practices. Drawing on the grounded experiences of female football players, we found that female friendships are much more layered and complex than represented in broader cultural discourse. 相似文献
70.
Kent Matthews 《Economic Affairs》1993,13(2):11-14
The rise of unemployment to close to three million recalls memories of the dole queues of the 1930s. Kent Matthews, of the Cardiff Business School, explores the analogies between the unemployment of the 1930s and the 1990s. 相似文献