An Open Elite

Author(s):  
Walter W. Powell ◽  
Jason Owen-Smith

This chapter follows the trajectory of the life sciences into the present day, focusing on the larger question of industry or field evolution. In a field characterized by “gales of creative destruction,” the chapter considers how some types of organizations have managed to retain a position of centrality even as others exit and many newcomers arrive. It analyzes the emergence of a core group of organizations, diverse in form and function, which they label an “open elite.” The animating question is why this group of organizations, which constituted a structural backbone of the field, did not become ossified gatekeepers but remained active in expansive exploration. The answer is found in their multiconnectivity—the multiple, independent pathways that link research-focused organizations in a wide array of different activities.

2000 ◽  
Vol 151 (4) ◽  
pp. 945-950 ◽  
Author(s):  
Justine Kiessling ◽  
Sven Kruse ◽  
Stefan A. Rensing ◽  
Klaus Harter ◽  
Eva L. Decker ◽  
...  

It has been a long-standing dogma in life sciences that only eukaryotic organisms possess a cytoskeleton. Recently, this belief was questioned by the finding that the bacterial cell division protein FtsZ resembles tubulin in sequence and structure and, thus, may be the progenitor of this major eukaryotic cytoskeletal element. Here, we report two nuclear-encoded plant ftsZ genes which are highly conserved in coding sequence and intron structure. Both their encoded proteins are imported into plastids and there, like in bacteria, they act on the division process in a dose-dependent manner. Whereas in bacteria FtsZ only transiently polymerizes to a ring-like structure, in chloroplasts we identified persistent, highly organized filamentous scaffolds that are most likely involved in the maintenance of plastid integrity and in plastid division. As these networks resemble the eukaryotic cytoskeleton in form and function, we suggest the term “plastoskeleton” for this newly described subcellular structure.


Author(s):  
Leon Chai

This chapter charts the debates in the Romantic period on medicine and its related life sciences. Medicine seemed the most promising candidate to generate advances; or, at least, the rationalization of the vital by medical science could be taken further than by other sciences. The more empirical study of uniquely vital process in Paris would yield more results than the formally more direct but methodologically immature confrontation of the vital by Paris’s main rival, Montpellier. Paris maintained controversy within its own approach, and medicine had to reconcile competing hierarchies of form and function. Nonetheless, it was the generative capacity of these initiatives that made what we call nineteenth-century science possible. And that, you might say, was their Romantic legacy.


Author(s):  
Patricia G. Arscott ◽  
Gil Lee ◽  
Victor A. Bloomfield ◽  
D. Fennell Evans

STM is one of the most promising techniques available for visualizing the fine details of biomolecular structure. It has been used to map the surface topography of inorganic materials in atomic dimensions, and thus has the resolving power not only to determine the conformation of small molecules but to distinguish site-specific features within a molecule. That level of detail is of critical importance in understanding the relationship between form and function in biological systems. The size, shape, and accessibility of molecular structures can be determined much more accurately by STM than by electron microscopy since no staining, shadowing or labeling with heavy metals is required, and there is no exposure to damaging radiation by electrons. Crystallography and most other physical techniques do not give information about individual molecules.We have obtained striking images of DNA and RNA, using calf thymus DNA and two synthetic polynucleotides, poly(dG-me5dC)·poly(dG-me5dC) and poly(rA)·poly(rU).


2011 ◽  
Author(s):  
Scott Fluke ◽  
Russell J. Webster ◽  
Donald A. Saucier

2013 ◽  
Author(s):  
Joshua Wilt ◽  
William Revelle

Author(s):  
Barbara Schönig

Going along with the end of the “golden age” of the welfare state, the fordist paradigm of social housing has been considerably transformed. From the 1980s onwards, a new paradigm of social housing has been shaped in Germany in terms of provision, institutional organization and design. This transformation can be interpreted as a result of the interplay between the transformation of national welfare state and housing policies, the implementation of entrepreneurial urban policies and a shift in architectural and urban development models. Using an integrated approach to understand form and function of social housing, the paper characterizes the new paradigm established and nevertheless interprets it within the continuity of the specific German welfare resp. housing regime, the “German social housing market economy”.


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