Monopoly Pricing of Social Goods

We analyse the roles of network connectivity and topology on the monopoly pricing of network goods which enable social interaction between consumers. Connectivity between network members induces the well-known network externalities effect, while the topological effect is caused by the incompleteness of the social network’s linkage, and it has not been previously recognised in this context. We find that the topological effect counteracts, and dominates, the connectivity effect by reducing the monopoly’s capacity to extract consumer surplus. Our results are seen to hold in real cases of social network businesses. The monopolist benefits from price discrimination based on consumers’ social connections, but this has a social cost as consumer surplus loss is higher than the increase in profits, with the highly connected consumers being the primary losers. Therefore, privacy policies restricting excessive social profiling and tracking can have an antitrust role too. Our approach also extends the theory of multi-sided markets in relation to the underlying relations graph of different market sides.     

开发核电站的维修策略

介绍开发核电站维修策略的方法,并以Loviisa发电厂为例.还说明了根据风险的大小进行设备分类的方法以及人为差错的分析和防止.     

Benzodiazepines and falling injuries in the elderly

Abstract

Objective: To investigate the use of benzodiazepines (BD) in relation to the risk of falling injuries in an elderly population (65 yrs. or older)

Design: An unmatched case-control study. Setting: The town of Pori, Finland

Participants: 380 subjects aged 65 years or over, who presented for medical treatment due to a fall during the 12 months from Sept. 1987 to Aug. 1988, and 342 controls, 65 years or older, selected from the population register. The control subjects were examined according to a schedule that corresponded in time (time of day, day of the week and month) to the time-distribution of falls in an earlier study

Outcome measure: All falls leading to medical treatment. BD use was determined from the serum, and the type of BD was determined by interviews and controlled from patient records

Results: We found a tendency toward a dose-response relationship between the serum BD concentration and the occurrence of falling injury. The risk of faling injury related to short-acting BDs was increased 5-fold and that for other BDs 2-fold compared to the risk among those without any BD in the serum. Conclusion: The results indicate that BD use is associated with falls in the elderly, and that short-acting BDs seem to be associated with falls more often. The results suggest caution in the use of BDs in the elderly.     

Volunteer Tourism: Postmodern Pilgrimage?

Volunteer tourism is very close to modern backpacking tourism but when the motive basis is concerned, it can be considered a clearly separate form of tourism. Thus new viewpoints must be utilised. In this study the discussion was expanded towards premodern tourism and postmodern theories were utilised. To strengthen the theoretical ideas, two example destinations in Indian Himalayas were selected. The rise of so-called alternative tourism is one aspect of postmodernity in tourism. Volunteer tourism belongs to the group but it also differs remarkably from the other members. These differences are connected here with traditional pilgrimage, which represents probably the oldest type of tourism. While pilgrims are searching for enlightenment by conducting pilgrimages to particular sites, volunteer tourists follow their altruistic motives and reach their aspiration level in sacred liminoid. Altruistic tourism will most likely grow in the future. In addition to this, traditional pilgrimage has also been changing. Contemporary pilgrimages include behaviour which has traditionally been typical to conventional tourism. Thus the convergence of traditional pilgrimage towards leisure tourism and the birth of volunteer tourism represents the blend of premodern and postmodern – a trend which was started by the help of modernity but finally occurred in postmodernity.     

Dynamics of Export Market Entry and Exit*

We apply discrete time duration models to explain the duration until new plants start to export and the duration until exit from the export markets, using data on Finnish manufacturing plants. Plants that are large, young, highly productive, and with high‐capital intensity are likely to enter the export market earlier and to survive in the export market longer. Foreign ownership increases chances of export entry, especially for small and low human capital plants, and decreases the risk of export failure for large, high‐productivity plants. The upper and lower tails of the productivity distribution are represented by plants that start exporting and those that are exiting, respectively.     

Structural change in Finnish manufacturing: The theory of the aggregation of production functions and an empirical analysis with a plant-level panel

In this paper, structural change in the Finnish manufacturing industries is studied using the theory of the aggregation of production functions and longitudinal plant-level data for the period from 1980 to 2005. To characterise the nature of structural change in 12 industries, we examine the invariance of aggregate production functions over time. Aggregate production functions need not be estimated because, according to the theory of the aggregation of production functions, the invariance can be analysed by investigating the stability of capacity density functions, which describe the distribution of value added in these industries. Even though the shapes of aggregate production functions alter over time in most industries, there are differences in timing and in the degree of turbulence across industries. The analysis confirms that in some industries (e.g., the paper industry) the late 1980s marked the beginning of a period of relatively strong structural change. The food and communications equipment manufacturing industries are examples of industries for which the 1990s was a period of turbulence.     

Job security and employee well-being: Evidence from matched survey and register data

We examine the effects of establishment- and industry-level labor market turnover on employees' well-being. The linked employer-employee panel data contain both survey information on employees' subjective well-being and comprehensive register-based information on job and worker flows. We test for the existence of compensating wage differentials by explaining wages and job satisfaction with average uncertainties, measured by an indicator for a high excessive turnover (churning) rate. The results are consistent with the theory of compensating wage differentials, since high uncertainty increases real wages, but high uncertainty has no effect on job satisfaction while not controlling for wages.     

Intangible investment in people and productivity

Organizational activity, information and communication technology work, and research and development (R&D) can be classified as work that creates intangible capital. We measure the returns to these three types of labor input by accounting for differences in their productivity compared with other labor inputs using Finnish firm-level data from 1998 to 2008. We apply a novel idea to use hiring as one proxy for productivity and demand shocks. We find that organizational workers increase total factor productivity and improve the profitability of high-productivity firms. R&D workers account for a large share of intangible capital; however, the returns to R&D are low. Investments in organizational competence are more likely to result in more rapid productivity growth. Firms with performance-related pay or domestically owned firms with extensive foreign activities have been among the highest performers with respect to the use of organizational work.