Mattia Olivero, Matteo Ferrai, Piero Pantaleone, Ivan Perkovic, Antonella D’Amato, David Moroni, Pierluigi Perugini and Matteo Tirelli
This activity dealt with the thermal analysis of the launch vehicle Vega C through a lumped parameter model. The Vega C is the upgrade of the actual launch vehicle Vega within the…
Abstract
Purpose
This activity dealt with the thermal analysis of the launch vehicle Vega C through a lumped parameter model. The Vega C is the upgrade of the actual launch vehicle Vega within the Vega Consolidation and Evolution Program, whose objective is to develop a consolidated – hence the C – version of the Vega by 2020. The main aim of the study was verifying the thickness of the external thermal protection of the launch vehicle, such that the structure and equipment temperatures were kept within their operating ranges.
Design/methodology/approach
The analysis has been performed by means of ESATAN–TMS during a time-frame that included the stand-by on ground phase and a flight phase up to the separation of the second stage from the third one. Two operating conditions have been considered, i.e. the worst hot and worst cold cases. The study has been divided as follows: geometry definition through spatial discretization; application of materials and optical properties; application of thermal loads; thermal analysis; and post-processing of the results in ThermNV.
Findings
It was concluded that the calculated temperatures were within the supposed project specifications, while their trends reflected the expected behavior.
Originality/value
During the flight phase, the mutual separation of the investigated stages has been explicitly modelled through a routine specifically developed for this purpose. Therefore, the submodels of each stage have been disabled at the correct instant according to the known time-sheet.
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What I will call the generic theory basically affirms that there often exists a disparity between the intentions of the actors and the outcome of their actions that gives rise to…
Abstract
What I will call the generic theory basically affirms that there often exists a disparity between the intentions of the actors and the outcome of their actions that gives rise to side-effects that are neither expected nor predictable.4 Unintended consequences are “incongruent” consequences, because what is in place in this case is a disparity between an action's original purpose and its results (Ermolaeva & Ross, 2011). This occurs because whenever we carry out our intentions in a complex world, there will be countless side-effects that could only partly be foreseen; most of the outcome depends on a series of combined reactions of a largely random nature. In other words, the interplay of forces and circumstances are so numerous and complex that it is impossible to consider all possible outcomes in advance. We can therefore say that any action has immediate effects – to some extent intentional and predictable – along with remote side-effects that are not necessarily intended or predictable. By acting we (intentionally) bring about certain things, while (unintentionally) provoking other things.
David Emanuel Andersson, Dieter Bögenhold and Marek Hudik
The purpose of this paper is to explore the entrepreneurial and policy consequences of the structural changes associated with postindustrialization.
Abstract
Purpose
The purpose of this paper is to explore the entrepreneurial and policy consequences of the structural changes associated with postindustrialization.
Design/methodology/approach
The approach uses Schumpeterian and institutional theories to predict the consequences of postindustrialization on four types of innovative markets: global mass markets; global niche markets; local mass markets and local niche markets.
Findings
The paper makes two key predictions. First, global mass markets will account for most cost-cutting process innovations. Second, niche markets, whether global or local, will provide the bulk of product innovations. Opportunities for product innovations in niche markets multiply both as the result of a more complex economy and as the result of heterogeneous preferences of consumers with divergent learning trajectories.
Social implications
The key implication of the theoretical pattern prediction of this paper is that there are increasing opportunities for entrepreneurs to introduce novelties that cater to niche demands, and this includes new lifestyle communities. The increasing diversity of values and preferences implies that one-size-fit-all policies are becoming increasingly inimical to the entrepreneurial discovery of higher-valued resource uses.
Originality/value
This paper takes a standard prediction of entrepreneurial theories – that innovations become more common with an increase in economy-wide product complexity – and extends this to increasing complexity on the consumption side. With increases in opportunities for learning, consumers diverge and develop disparate lifestyles. The resultant super-diversity, which multiplies consumption niches to a much greater extent than what ethnicity-based diversity indices would imply, makes it more difficult to achieve consensus about the desirability of public policies.
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In “An Austrian Theory of Spatial Land,” Fred E. Foldvary addresses the disregard of spatial issues in basic Austrian economic theory as formulated by Carl Menger (1871) and…
Abstract
In “An Austrian Theory of Spatial Land,” Fred E. Foldvary addresses the disregard of spatial issues in basic Austrian economic theory as formulated by Carl Menger (1871) and elaborated upon by Ludwig von Mises (1940). Foldvary shows that Johann Heinrich von Thünen (1826) and Henry George (1879/1884), in particular, serve to fill these gaps in the classical Austrian theory of the market process. Moreover, a theory that incorporates spatial land leads to the conclusion that Austrian business cycle theory is incomplete: The “malspeculation” that accompanies urbanization whenever capital and labor rather than land are the main sources of tax revenue will have to be added to the malinvestment that is caused by expansionary monetary policies.
Chung‐Shing Lee, J. Thad Barnowe and David E. McNabb
Presents the findings of a cross‐cultural analysis of perceived risks of environmental, technological, and societal problems. An international sample of 295 undergraduate and…
Abstract
Presents the findings of a cross‐cultural analysis of perceived risks of environmental, technological, and societal problems. An international sample of 295 undergraduate and graduate students at three US universities and the National Taiwan University was surveyed. The study was designed to test two hypotheses: first, that today’s university students have grown numb to threat warnings and second, that differences in cultural and political contexts result in variation in the way societies perceive environmental issues and social concerns. Analysis of variance tests identified a number of significant differences in the way US and Asian university students perceive environmental risks, despite the many similarities in the university‐student cultures of both regions.
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There is no argument among serious researchers that a mongoloid stock first colonized the New World from Asia. Nor is there controversy about the fact that these continental…
Abstract
There is no argument among serious researchers that a mongoloid stock first colonized the New World from Asia. Nor is there controversy about the fact that these continental pioneers used the Bering Land Bridge that then connected the Asian Far East with Alaska.– Gerald F. Shields, et al.American Journal of Genetics (1992)
Political Science in the United States has focused too much on variable-oriented, quantitative methods and thus lost its ability to ask “big questions.” Stein Rokkan (d. 1979) was…
Abstract
Political Science in the United States has focused too much on variable-oriented, quantitative methods and thus lost its ability to ask “big questions.” Stein Rokkan (d. 1979) was an eminent comparativist who asked big questions and provided such qualitative tools as conceptual maps, grids, and clustered comparisons. Ibn Khaldun (d. 1406), arguably the first social scientist, also asked big questions and provided a universal explanation about the dialectical relationship between nomads and sedentary people. This article analyzes to what extent Ibn Khaldun's concepts of asabiyya and sedentary culture help understand the rise and fall of the Muslim civilization. It also explores my alternative, class-based perspective in Islam, Authoritarianism, and Underdevelopment. Moreover, the article explores how Rokkan's analysis of cultural, geographical, economic, and religio-political variations within Western European states can provide insights to the examination of such variations in the Muslim world.
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David Emanuel Andersson and James A. Taylor
The market is not the only spontaneous order. Hayek himself drew attention to language and English common law as other examples, noting that they had first been identified as such…
Abstract
The market is not the only spontaneous order. Hayek himself drew attention to language and English common law as other examples, noting that they had first been identified as such by Scottish Enlightenment philosophers such as Adam Smith and Adam Ferguson. Hence, such orders “are made with equal blindness to the future; and nations stumble upon establishments, which are indeed the results of human action, but not the execution of any human design” (Ferguson, 1782, sec. II). In the 20th century, Michael Polanyi used the term spontaneous order for the polycentric feedback system that explains the growth of scientific knowledge (Polanyi, 1962).