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81.
82.
ABSTRACT. Analysis of social interactions has recently become an important area of economic research, and the focus of researchers in this area has increasingly shifted toward dynamic models. In one recent contribution, Brueckner and Smirnov (2007) analyze the evolution of population attributes in an exceedingly simple model, where an agent's attributes at time t are equal to the average attribute value among his acquaintances. The pattern of acquaintances in the population is determined by the social network, and Brueckner and Smirnov (BS) explore the effect of network characteristics on the convergence of population attributes over time. They show that some simple sufficient conditions on the network structure ensure convergence to a "melting-pot" equilibrium where attributes are uniform across agents. The present paper provides a generalization of BS's analysis, allowing for a more general form of the rule governing the evolution of population attributes. The analysis shows that BS's previous conclusions continue to hold under this generalization, while also providing a result that can be applied more generally to other models. 相似文献
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84.
Thomas Ott Frank Swiaczny Anita Höhn 《Standort - Zeitschrift für angewandte Geographie》2002,26(2):63-69
Am Beispiel einer touristischen Image- bzw. Marktuntersuchung besch?ftigt sich der vorliegende Aufsatz mit den M?glichkeiten
zur internet-basierten Datenerhebung im Rahmen empirischer Forschungsprojekte. Die Ergebnisse einer auf einer Zufallsauswahl
basierenden schriftlichen Befragung mit Postversand und einer Befragung im Internet werden hierzu miteinander verglichen und
ihre Eignung für die gew?hlte Zielsetzung bewertet. Die Darstellung erfolgt anhand des konkreten Fallbeispiels des Projektes
„Stuttgart Regio: Touristische Infrastruktur- und Marketing-Analyse.” 相似文献
85.
The focus of this article is on product innovations introduced by firms (establishments) and the collaborations they enter into with other firms and organizations in carrying out this activity. The theoretical framework combines innovation theories with the literature on regional innovation systems and the knowledge-based economy. Empirically we have investigated characteristics of collaboration among manufacturing establishments in the region of East Gothia in Sweden, with specific focus on the number of employees involved in the innovation projects, mechanisms of knowledge transfer between organizations, as well as financing and patenting in relation to product innovations. 相似文献
86.
In previous research, entrepreneurs' social networks are expected to influence entrepreneurial success because they give access to resources. This is confirmed in this study. In most research it is also believed that network features such as strength of ties determine to a great extent what kind of resources the entrepreneur receives. Although this last assumption has important implications for entrepreneurship research and for practice, the validity of the assumption has not been put to the test in previous research. The analysis of data from an empirical study of entrepreneurs in Norway gives at best partial support for the assumption. Contrary to what should be expected, the results indicate that strong ties are important channels for information and that weak ties give access to finance. 相似文献
87.
Milena Benovska‐Sabkova Tobias Köllner Tünde Komáromi Agata Ładykowska Detelina Tocheva Jarrett Zigon 《Anthropology today》2010,26(1):16-21
The article addresses the revival of Russian Orthodoxy as a prominent domain in the lives of many Russians. The six authors are interested in the underlying question: What makes Russian Orthodoxy a relevent and modern source of morality and identity? The circumstances of this branch of Christianity significantly differ from what has been discussed in recent years as ‘the anthropology of Christianity’. The article proposes a thematic approach in order to connect the exploration of Russian Orthodoxy to the study of other denominations. A key‐area is the disctinctive articulation between continuity and change, which is crucial to the understanding of some branches of Protestantism as well. 相似文献
88.
Páll Björnsson 《Scandinavian journal of history》2013,38(3-4):298-300
This paper explores the role of personal networks and social capital in the assimilation of individuals into the elite of 18th‐century England. In it, I draw on the letterbooks of two merchants from north‐west England to assess the ways in which individuals accessed established networks and thus augmented their social status and business opportunities. In particular, I examine how networks were articulated, and consider their impact on both the social standing of the individual merchant and the construction of a shared culture amongst merchants. It is therefore possible to see business networking as an important counterpart to polite sociability in the construction of an expanded elite. 相似文献
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90.
Bernadett Bajnóczi Gabriella Schöll-Barna Nándor Kalicz Zsuzsanna Siklósi George H. Hourmouziadis Fotis Ifantidis Aikaterini Kyparissi-Apostolika Maria Pappa Rena Veropoulidou Christina Ziota 《Journal of archaeological science》2013,40(2):874-882
Determination of the source of Spondylus objects is essential for the interpretation of Late Neolithic exchange systems and the social role of shell ornaments. We performed stable isotope analysis combined with cathodoluminescence microscopy study on ornaments (beads, bracelets) made of Spondylus shells excavated at the Aszód-Papi földek archaeological site in Hungary, to define their origin. For comparison Spondylus finds from Neolithic sites of Greece, modern Spondylus shells from the Aegean and the Adriatic, as well as fossil Spondylus and Ostrea shells from the Carpathian Basin were also examined. Oxygen isotope composition of Spondylus finds from Aszód ranges between ?1.9 and 2.1‰ and overlaps with the oxygen isotope range of shell objects from other Neolithic sites. Modern Spondylus shells from the Aegean and the Adriatic show overlapping δ18O values with one another and with the Neolithic objects; while recent shells of the Black Sea clearly are separate isotopically from the Mediterranean ones and most of archaeological artefacts. Spondylus shells from the Aszód site have Mediterranean origin; their source can be the Aegean or the Adriatic. Based on a former strontium isotope study the use of fossil Spondylus shells is excluded as raw material used for ornaments, however, in recent years the use of fossil shells was reintroduced. The shell ornaments from Aszód-Papi földek and the fossil oyster shells collected from the Carpathian Basin exhibit some overlapping oxygen isotope values; however, cathodoluminescence microscopy indicates that the Spondylus objects retained their original aragonite material. Diagenetic calcite, which occurs typically in the fossil shells, was not detected in the ornaments suggesting that the studied objects were made of recent shells. Calcitic parts observed in some Spondylus objects are not related to fossilisation. 相似文献