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Tessaleno Devezas Francisco Cristovão L. de Melo Maria Luisa Gregori Maria Cristina V. Salgado Joana R. Ribeiro Christian B.C. Devezas 《Technological Forecasting and Social Change》2012,79(5):963-985
This article is geared toward shedding some more light on what may be the next space race and its contours.Space flight is undoubtedly a human achievement of the second half of the 20th century, and probably the most audacious one of the past century. The space race started suddenly in the 1950s and has grown explosively during the following two decades, but decreased steadily after the 1970s. After the 1990s, however, we have seen a shy rebirth of space-related activities, when many other actors (states) entered the stage, adding up to the agonizing role of the two-actor piece that we have witnessed during the so-called Cold War.The opening years of the 21st century provided a more complex narrative for space exploration. At the start of the new millennium a new technosphere [1] emerged, dominated by what is used to be called as the Information and Communications Technologies (ICT), with the Internet playing the leading role among the bandwagon of technological novelties that appeared during the twilight of space activities. In despite of the fact that artificial satellites represent the very backbone of the global communications system, space activities seem to play a secondary role amidst the apparently accelerated rate of change concerning the technological systems of the present technosphere. But, as it is demonstrated in this paper, things are changing, and very probably a renewed space race will unfold in the coming decades.A question may be placed: what happened? Why the Earth stood still with regard to the race toward the cosmos? Answer: futurists, even prestigious ones like Herman Kahn and Arthur Clarke, did not consider the existence of socioeconomic long waves (Kondratieff waves, or K-waves for short) with their two decades long economic downturn, which has contributed to the deceleration of space-related activities.Analyzing the worldwide evolving scenario of space-related activities during the last eighty years under the framework of the succeeding K-waves and applying some technological forecasting tools, namely the logistic analysis, technological surveillance and intensive data mining, scrutinizing more than 7500 events occurred in the period 1930–2010 related with space activities, it is demonstrated that the space race like the one that we have witnessed until now is a natural growth process that has saturated at the dawn of this century. The same analysis demonstrates that a new growth process in this field might be nowadays under way with contours very different from that imagined by futurists and science fiction writers sixty years ago. Also the main trends in the usage of launching vehicles and satellites are framed and discussed in this paper. 相似文献
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The aim of this article is to analyze the effect of a uniform minimum wage in Poland on youth employment in regional labor markets and to determine in which of the regions the effect is significant. The analyses are based on NUTS2 level in 1999–2012. The results point to a statistically insignificant parameter of minimum wage variable for the whole sample. However, after allowing the minimum wage parameter to vary across regions, we find that the relatively high ratio of minimum to average wages could be the factor limiting youth employment growth in less-developed regions in the southeast of Poland. 相似文献
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Aleksandra Živaljević Živko Mitrović Maja Petković 《The Service Industries Journal》2013,33(5):516-541
Numerous studies have shown that implemented models for quality assurance or improvement in healthcare facilities differ, even those models that are based on the same guidelines, i.e. standards, regulations or concepts. The cause of diversity in implemented quality models could be found in the process of translating guidelines into the implemented model for quality assurance or improvements in healthcare facilities, while neglecting processes of healthcare facilities that are not clinical processes, but still responsible for the quality of healthcare services. Therefore, this research recommends a conceptual model that should be a link between guidelines, implemented models and mathematical models derived from the conceptual model, which could provide a means of evaluating quality values of any part of the healthcare organization. 相似文献
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Derek R. Avery Sabrina D. Volpone Robert W. Stewart Aleksandra Luksyte Morela Hernandez Patrick F. McKay Michelle R. Hebl 《人力资源管理》2013,52(2):175-193
Organizations must target talented applicants, who will often be demographically diverse, to attract the most competent and competitive workforce possible. Despite the bottom‐line implications of attracting the best and brightest, surprisingly little is known about how and why diversity recruitment strategies affect recruitment outcomes (e.g., job‐pursuit intentions). To gain insight into this question, we conducted an initial experimental study (N = 194) to test the premise that other‐group orientation moderates the relationship between perceived organizational value of diversity and job‐pursuit intentions. In a follow‐up experiment (N = 255), identity affirmation was examined as the mediating mechanism for the interaction observed in the first study. Mediated moderation analyses supported the proposed model. Collectively, the studies indicate that job seekers high in other‐group orientation are more intent on pursuing employment with organizations deemed to value diversity because they feel that their salient identities are likely to be affirmed. No such indirect effect is present for those lower in other‐group orientation. 相似文献
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Krzysztof Kompa Aleksandra Matuszewska-Janica 《International Advances in Economic Research》2009,15(1):59-70
The Warsaw Stock Exchange (WSE) has been operating in present form for 15 years. WSE is regarded as an “emerging market”.
We can observe that it is still developing (in order to become “developed market”). The level of development is often analyzed
with reference to the efficiency of the market. We can say that the capital market is efficient if the prices at the market
fully reflect all available information. The aim of the presented research is to analyze the current situation at the Warsaw
Stock Exchange. Particularly we investigate the weak form of efficiency using selected statistical tests. The research is
based on actual data concerning daily observations of shares at the Warsaw Stock Exchange transformed to the logarithmic rates
of return, considering the period 2000–2006 and subperiods: the bear market, stagnation and the bull market.
相似文献
Aleksandra Matuszewska-Janica (Corresponding author)Email: |
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The majority of research concentrates exclusively on the objectives of governments, profit entities or non‐profit organizations, while a significant number of organizations are hybrids. One form of these hybrids is the social enterprise. This paper theoretically describes social enterprises taking into consideration their main aims. Based on the ‘earned income’ school of thought, the principal‐agent theory and considering the nature of social enterprises’ activities we propose the objective functions of their owners (principals) and managers (agents). The maximization problem of the social enterprise is defined as the weighted average of the utilities of two groups of stakeholders who have an influence on the degree of the realization of the social mission and business orientations. We point out the direction which social enterprises should follow in order to obtain the highest value of their objective functions. The desired state for social enterprises should be one in which they reinvest all surpluses in the process of their mission realization and their profit is slightly higher than the required level by the principal's contract. 相似文献
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Aleksandra Parteka 《Review of World Economics》2010,145(4):615-640
This paper contributes to the literature on the evolution of overall specialisation along the process of economic development
by simultaneously estimating ‘specialisation curves’ emerging from fully comparable employment and export statistics in a
sample of 32 economies (1980–2000). We apply semiparametric estimation methods, which allow us to combine the flexibility
of the estimation with the inclusion of country-specific effects, demonstrating that their omission can be the source of contradictions
in nonparametrically revealed patterns of diversification along the path of growth. We find no strong support for a U-shaped
pattern (which is very sensitive to the methodological setting applied) but rather a robust tendency towards manufacturing
despecialisation in the initial phase of economic growth that is confirmed both by export and employment specialisation patterns. 相似文献
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