We use the results of the policies, appropriation and competitiveness in Europe (PACE) 1993 survey of Europe's largest firms to explore the effect of proximity on knowledge flows from affiliated firms, suppliers, customers, joint ventures, competitors and public research organisations to innovative firms. The focus is on the last. First, we find that public science is among the most important sources of technical knowledge for the innovative activities of Europe's largest industrial firms. Then, after comparing the PACE results with the Community Innovation Survey II (1997) and the Carnegie Mellon Survey (1994), we use the unique information from the PACE survey on the geographic location of knowledge sources and the methods used to access them to develop an econometric analysis of proximity and location. The importance of proximity for sourcing knowledge from public research increases with the quality and output of domestic public research organisations and the importance given to public science by the respondents. It declines with an increase in the firm's R&D expenditure, activity in the North American market and the importance to the firm of codified basic research results. Surprisingly, firms that find informal contacts to be an important method for acquiring public research results are more likely to find proximity less important, even though proximity allows firms to access tacit knowledge. This effect is primarily limited to European countries, suggesting the development of a 'European Research Area'.Public research, Knowledge flows, Proximity, Innovation,
A review of the health effects of relative humidity in indoor environments suggests that relative humidity can affect the incidence of respiratory infections and allergies. Experimental studies on airborne-transmitted infectious bacteria and viruses have shown that the survival or infectivity of these organisms is minimized by exposure to relative humidities between 40 and 70%. Nine epidemiological studies examined the relationship between the number of respiratory infections or absenteeism and the relative humidity of the office, residence, or school. The incidence of absenteeism or respiratory infections was found to be lower among people working or living in environments with mid-range versus low or high relative humidities. The indoor size of allergenic mite and fungal populations is directly dependent upon the relative humidity. Mite populations are minimized when the relative humidity is below 50% and reach a maximum size at 80% relative humidity. Most species of fungi cannot grow unless the relative humidity exceeds 60%. Relative humidity also affects the rate of offgassing of formaldehyde from indoor building materials, the rate of formation of acids and salts from sulfur and nitrogen dioxide, and the rate of formation of ozone. The influence of relative humidity on the abundance of allergens, pathogens, and noxious chemicals suggests that indoor relative humidity levels should be considered as a factor of indoor air quality. The majority of adverse health effects caused bLy relative humidity would be minimized by maintaining indoor levels between 40 and 60%. This would require humidification during winter in areas with cold winter climates. Humidification should preferably use evaporative or steam humidifiers, as cool mist humidifiers can disseminate aerosols contaminated with allergens.
A review of the health effects of relative humidity in indoor environments suggests that relative humidity can affect the incidence of respiratory infections and allergies. Experimental studies on airborne-transmitted infectious bacteria and viruses have shown that the survival or infectivity of these organisms is minimized by exposure to relative humidities between 40 and 70%. Nine epidemiological studies examined the relationship between the number of respiratory infections or absenteeism and the relative humidity of the office, residence, or school. The incidence of absenteeism or respiratory infections was found to be lower among people working or living in environments with mid-range versus low or high relative humidities. The indoor size of allergenic mite and fungal populations is directly dependent upon the relative humidity. Mite populations are minimized when the relative humidity is below 50% and reach a maximum size at 80% relative humidity. Most species of fungi cannot grow unless the relative humidity exceeds 60%. Relative humidity also affects the rate of offgassing of formaldehyde from indoor building materials, the rate of formation of acids and salts from sulfur and nitrogen dioxide, and the rate of formation of ozone. The influence of relative humidity on the abundance of allergens, pathogens, and noxious chemicals suggests that indoor relative humidity levels should be considered as a factor of indoor air quality. The majority of adverse health effects caused by relative humidity would be minimized by maintaining indoor levels between 40 and 60%. This would require humidification during winter in areas with cold winter climates. Humidification should preferably use evaporative or steam humidifiers, as cool mist humidifiers can disseminate aerosols contaminated with allergens.
This article explores the link between the organization of work and innovation by developing national aggregate indicators for the EU member states of organizational forms and innovation modes (how firms innovate). The organizational indicators are constructed from the Third European Survey of Working Conditions results for 8081 salaried employees in 2000. The innovation mode indicators are calculated using the results of the third Community Innovation Survey (CIS-3) for innovation activities between 1998 and 2000. The analysis shows that in nations where work is organized to support high levels of discretion in solving complex problems firms tend to be more active in terms of innovations developed through their in-house creative efforts. In countries where learning and problem solving on the job are more constrained, and little discretion is left to the employee, firms tend to engage in a supplier-dominated innovation strategy. Their technological renewal depends more on the absorption of innovations developed elsewhere. These patterns remain when we divide the economies into manufacturing and services. The results suggest that in order to understand national systems of innovation, it is necessary to bring the mode of organization of work into the analysis. Early conceptions of national innovation systems were built upon an analysis of interactive learning between producers and users. Now the analysis needs to be founded also on an understanding of how people interact and learn at the workplace in different national economies. The results also suggest that European policy efforts to improve innovation performance as part of the revised Lisbon strategy would benefit from a stronger focus on the diffusion of innovative forms of work organization. A step in this direction would be to develop indicators of work organization that could be directly linked to innovation performance.
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