Current National Space Security Trends and Implications for the Future

2002 ◽  
Author(s):  
Frank P. Todd
2000 ◽  
Vol 176 ◽  
pp. 41-45
Author(s):  
Laurent Eyer

AbstractESA and NASA are studying projects having a tremendous return on variable star research. Other national space agencies are also studying or developing projects of smaller costs but with impressive returns. The projects range from global Galactic surveys like the ESA mission GAIA which will give photometric time series for about 1 billion stars, to detailed pulsation-mode studies like the CNES mission COROT which could reach a photometric precision lower than 1 ppm. The presentation will emphasize the future astrometric, asteroseismological and planet detection missions.


Urban Studies ◽  
2019 ◽  
Vol 57 (1) ◽  
pp. 198-217 ◽  
Author(s):  
Mike Hodson ◽  
Andrew McMeekin ◽  
Julie Froud ◽  
Michael Moran

In a context of globalisation, the emergence of city-regions and the politics and dynamics of their constitution has been debated for almost two decades. Recent writings have extended this focus to seeing city-regions as a geopolitical project of late capitalism where the state takes a critical role in the re-design of city-regions to make them amenable to international competition and to secure strategic inward investments in the built environment and infrastructure. We explore this issue in the context of state redesign of sub-national space in England and focus on Greater Manchester, as the de facto exemplar of ‘devolution’ to English city-regions. We argue that though re-scaling in Greater Manchester is a long-term historical process this has been punctuated by the UK state’s process of ‘devolution’ since 2014, this has involved a re-design and formalisation of Greater Manchester’s governing arrangements. It has also involved invoking a long dormant role for city-regional planning in articulating the future design of the material city-region over the next two decades as an attempt to formalise and continue a pre-existing, spatially selective growth trajectory by new means. Yet, the disruption of new hard governing arrangements also provides challenges to that trajectory. This produces tensions between, on the one hand, the pursuit of a continuity politics of growth through agglomeration, material transformation of the city-region and narrow forms of urban governance and, on the other hand, a more disruptive politics of the future of the city-region, its material transformation and how it is governed. These tensions are producing new political possibilities and spaces in the transformation of Greater Manchester. The implications of this are discussed.


1961 ◽  
Vol 13 ◽  
pp. 29-41
Author(s):  
Wm. Markowitz
Keyword(s):  

A symposium on the future of the International Latitude Service (I. L. S.) is to be held in Helsinki in July 1960. My report for the symposium consists of two parts. Part I, denoded (Mk I) was published [1] earlier in 1960 under the title “Latitude and Longitude, and the Secular Motion of the Pole”. Part II is the present paper, denoded (Mk II).


1978 ◽  
Vol 48 ◽  
pp. 387-388
Author(s):  
A. R. Klemola
Keyword(s):  

Second-epoch photographs have now been obtained for nearly 850 of the 1246 fields of the proper motion program with centers at declination -20° and northwards. For the sky at 0° and northward only 130 fields remain to be taken in the next year or two. The 270 southern fields with centers at -5° to -20° remain for the future.


Author(s):  
Godfrey C. Hoskins ◽  
Betty B. Hoskins

Metaphase chromosomes from human and mouse cells in vitro are isolated by micrurgy, fixed, and placed on grids for electron microscopy. Interpretations of electron micrographs by current methods indicate the following structural features.Chromosomal spindle fibrils about 200Å thick form fascicles about 600Å thick, wrapped by dense spiraling fibrils (DSF) less than 100Å thick as they near the kinomere. Such a fascicle joins the future daughter kinomere of each metaphase chromatid with those of adjacent non-homologous chromatids to either side. Thus, four fascicles (SF, 1-4) attach to each metaphase kinomere (K). It is thought that fascicles extend from the kinomere poleward, fray out to let chromosomal fibrils act as traction fibrils against polar fibrils, then regroup to join the adjacent kinomere.


Author(s):  
Nicholas J Severs

In his pioneering demonstration of the potential of freeze-etching in biological systems, Russell Steere assessed the future promise and limitations of the technique with remarkable foresight. Item 2 in his list of inherent difficulties as they then stood stated “The chemical nature of the objects seen in the replica cannot be determined”. This defined a major goal for practitioners of freeze-fracture which, for more than a decade, seemed unattainable. It was not until the introduction of the label-fracture-etch technique in the early 1970s that the mould was broken, and not until the following decade that the full scope of modern freeze-fracture cytochemistry took shape. The culmination of these developments in the 1990s now equips the researcher with a set of effective techniques for routine application in cell and membrane biology.Freeze-fracture cytochemical techniques are all designed to provide information on the chemical nature of structural components revealed by freeze-fracture, but differ in how this is achieved, in precisely what type of information is obtained, and in which types of specimen can be studied.


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