17,750 research outputs found
Fat handles and phase portraits of Non Singular Morse-Smale flows on S^3 with unknotted saddle orbits
In this paper we build Non-singular Morse-Smale flows on S^3 with unknotted
and unlinked saddle orbits by identifying fat round handles along their
boundaries. This way of building the flows enables to get their phase
portraits. We also show that the presence of heteroclinic trajectories imposes
an order in the round handle decomposition of these flows; this order is total
for NMS flows composed of one repulsive, one attractive and n unknotted saddle
orbits, for n >1.Comment: 15 page
Apollo experience report: Lunar module electrical power subsystem
The design and development of the electrical power subsystem for the lunar module are discussed. The initial requirements, the concepts used to design the subsystem, and the testing program are explained. Specific problems and the modifications or compromises (or both) imposed for resolution are detailed. The flight performance of the subsystem is described, and recommendations pertaining to power specifications for future space applications are made
Investment and Instability
Although recent research has repeatedly found a negative association between investment and political instability, the existence and direction of causality between these two variables has not yet been investigated. This paper empirically tests for a causal and negative long-run relationship between political instability to investment. It finds that there is a robust causal relation from instability to investment, and that it is positive. In other words, an increase in political instability Granger causes an increase in investment. We identify three different theories that can explain this result.http://deepblue.lib.umich.edu/bitstream/2027.42/39721/3/wp337.pd
Who is Afraid of Political Instability?
An unstable macroeconomic environment is often regarded as detrimental to economic growth. Among the sources contributing to such instability, the literature has assigned most of the blame to political issues. This paper empirically tests for a causal and negative long-term relation between political instability and economic growth, but finds no evidence of such a relationship. Sensitivity analysis indicates that there is a contemporaneous negative relationship and that, in the long run and ignoring institutional factors, the Sub-Saharan Africa group plays the determining role in steering this relationship into causal and negative.http://deepblue.lib.umich.edu/bitstream/2027.42/39710/3/wp326.pd
Investment and Instability
Although recent research has repeatedly found a negative association between investment and political instability, the existence and direction of causality between these two variables has not yet been investigated. This paper empirically tests for a causal and negative long-run relationship between political instability to investment. It finds that there is a robust causal relation from instability to investment, and that it is positive. In other words, an increase in political instability Granger causes an increase in investment. We identify three different theories that can explain this result.political instability, aggragate investment, Granger causality
Who is Afraid of Political Instability?
An unstable macroeconomic environment is often regarded as detrimental to economic growth. Among the sources contributing to such instability, the literature has assigned most of the blame to political issues. This paper empirically tests for a causal and negative long-term relation between political instability and economic growth, but finds no evidence of such a relationship. Sensitivity analysis indicates that there is a contemporaneous negative relationship and that, in the long run and ignoring institutional factors, the Sub-Saharan Africa group plays the determining role in steering this relationship into causal and negative.economic growth, political instability
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