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The global telecommunications changed from a number of co-operating national monopolies offering a restricted range of services to a competitive, growing market with players of many types and sizes, offering a large range of services. How can vertically integrated incumbents align themselves and their systems to best compete in this environment? Business patterns and enterprise modelling offer a tool to model a large organization as a number of smaller enterprises that can compete with and co-operate with smaller specialist players in the market. In order to identify enterprises, this paper proposes that there are only a limited number of types of enterprise (manufacturer, service supplier, reseller, that these enterprise types can only interact in a limited number of ways (component supply, aggregation supply, resell supply, trading, end-supply and commission). With the use of examples, this paper illustrates these types of enterprise and enterprise relationships, and how they can be combined to build both internal and external supply chains, and discusses some of the conclusions that can be drawn from this analysis.  相似文献   
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The following personal reflections are in honour of Michael and all that he contributed to our lives. And, we honour Brigitte a key member of the group who died in 2006. Mem, Sue and Veronica, December 2008.  相似文献   
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The study deals with the relationship of population’ to historical processes. Six aspects are selected for consideration: (1) The pattern of demographic factors which help to cause the persistence of particular human physical types in given localities. (2) Social control to maintain population within subsistence limits. (3) The conditions in which such control breaks down. (4) Migration. (5) Major trends in population history. (6) The influence of population on historical development.  相似文献   
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This article proposes a classification of motivations for collective action based in three of Tetlock's (2002) metaphors of social functionalism (i.e., people as intuitive economists, politicians, and theologians). We use these metaphors to map individual- and group-based motivations for collective action from the literature onto the distinction between individuals who are strongly or weakly identified with their social group. We conclude that low identifiers can be best understood as intuitive economists (supported by both early and recent work on collective action), whereas high identifiers can be best thought of as intuitive politicians or theologians (as recent work on social identity has started to explore). Interestingly, our classification reveals a remarkable lack of attention for the intuitive theologian's motivation for collective action. We therefore develop new hypotheses for future research, and derive recommendations for policy and practice from our analysis.  相似文献   
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Bootstrap tests: how many bootstraps?   总被引:3,自引:0,他引:3  
In practice, bootstrap tests must use a finite number of bootstrap samples. This means that the outcome of the test will depend on the sequence of random numbers used to generate the bootstrap samples, and it necessarily results in some loss of power. We examine the extent of this power loss and propose a simple pretest procedure for choosing the number of bootstrap samples so as to minimize experimental randomness. Simulation experiments suggest that this procedure will work very well in practice.  相似文献   
27.
Risk Factors for Gambling Problems: An Analysis by Gender   总被引:1,自引:0,他引:1  
Differences in problem gambling rates between males and females suggest that associated risk factors vary by gender. Previous combined analyses of male and female gambling may have obscured these distinctions. This study aimed to develop separate risk factor models for gambling problems for males and for females, and identify gender-based similarities and differences. It analysed data from the largest prevalence study in Victoria Australia (N = 15,000). Analyses determined factors differentiating non-problem from at-risk gamblers separately for women and men, then compared genders using interaction terms. Separate multivariate analyses determined significant results when controlling for all others. Variables included demographics, gambling behaviour, gambling motivations, money management, and mental and physical health. Significant predictors of at-risk status amongst female gamblers included: 18–24 years old, not speaking English at home, living in a group household, unemployed or not in the workforce, gambling on private betting, electronic gaming machines (EGMs), scratch tickets or bingo, and gambling for reasons other than social reasons, to win money or for general entertainment. For males, risk factors included: 18–24 years old, not speaking English at home, low education, living in a group household, unemployed or not in the workforce, gambling on EGMs, table games, races, sports or lotteries, and gambling for reasons other than social reasons, to win money or for general entertainment. High risk groups requiring appropriate interventions comprise young adults, especially males; middle-aged female EGM gamblers; non-English speaking populations; frequent EGM, table games, race and sports gamblers; and gamblers motivated by escape.  相似文献   
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Carlo Levi's classic book Christ Stopped at Eboli provides unique insights into rural conditions in a village in Basilicata, southern Italy, in the 1930s, a time when objective documentation on Italian rural economic and social life was largely suppressed by Fascism. Levi's narrative is systematically analysed under the following heads: the relationship of the rural South to the central authorities in Rome; the character of the landscape around Levi's village of Aliano; economic life; social structure; social conditions, including poverty, health and education; emigration and return migration. The concluding discussion focuses on Levi's interpretation of the nature and causes of the ‘southern problem’ and his views of Basilicatan peasant culture.  相似文献   
30.
The present study advances research on union status and health by providing a first look at alcohol use differentials among different‐sex and same‐sex married and cohabiting individuals using nationally representative population‐based data (National Health Interview Surveys 1997–2011, N = 181,581). The results showed that both same‐sex and different‐sex married groups reported lower alcohol use than both same‐sex and different‐sex cohabiting groups. The results further revealed that same‐sex and different‐sex married individuals reported similar levels of alcohol use, whereas same‐sex and different‐sex cohabiting individuals reported similar levels of alcohol use. Drawing on marital advantage and minority stress approaches, the findings suggest that it is cohabitation status—not same‐sex status—that is associated with elevated alcohol rates.  相似文献   
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