4,620 research outputs found
Perspective: a New England approach to preserving open space
New England is known for the beauty of its natural landscape and the political independence of its cities and towns. Can we devise policies to preserve both?Land use ; New England
What’s Wrong with McCloskey on the Earth Charter
This note responds to Deirdre McCloskey's 2002 critique of the Earth Charter by arguing that the concepts of sustainability, intergenerational equity and political democracy are essential to an understanding of that international manifesto.
Balanced and Imbalanced Societal Norms About Working: A Comparison of Four National Labor Markets at Two Time Points
Two normative orientations: work as an obligation/duty versus work as an entitlement/right are compared among representative samples from the American, German, Belgian, and Japanese labor force exploring four domains: Work itself\u27, Meaningful work , Work Improvements , and Care for the Future at two points in time. Results reveal: Stability over time, and significant differences related to age, occupational group membership, and country
How Working is Defined: Structure and Stability
[Excerpt] Multidimensional scaling of statements that identify when individuals consider an activity in which one is engaged to be working was conducted on representative samples of the employed labor forces in Belgium, Germany, Japan and the USA at the time period 1982-83 and again at the time period 1989-92. Representative labor force samples of the employed labor forces in East Germany, Bulgaria, the Czech Republic, Hungary, Poland, Slovakia and Beijing, China studied at the time period 1991-92 were subjected to the same MDS analysis. The results provide strong support that one dominant dimension underlying the way in which people define working ranges from individual cost to social contribution. Individuals who define working in burden and/or constraint terms emphasize costs to the individual. Individuals who define working largely in responsibility and exchange terms emphasize reciprocal exchange relations between the individual and the organization/society. Individuals who define working largely in social contribution terms emphasize the social benefits of working. The work definition structures found in each of the four countries with replication samples are quite stable over time. In total, the work definition responses of over 18,000 individuals were studied
Study of techniques for the reduction of creep in plated wire memories Final report, 28 Jun. 1967 - 28 Aug. 1968
Magnetization reversal in thin films of plated wire memory element
Morphological heterogeneity of HeLa cell mitochondria visualized by a modified diaminobenzidine staining technique
The diaminobenzidine (DAB) technique for the ultrastructural localization of sites of cytochrome c oxidase activity in animal tissues has been adapted to the visualization of mitochondria in animal cells growing in culture. The modified technique allows the staining of mitochondria in all cells in coverslip preparatins for light microscopy. Electron microscopy of thin sections of material treated by this method has revealed that all mitochondrial profiles within a cell (and only these) are stained and they exhibit a well preserved size and internal structure. Coverslip cultures of synchronized and unsynchronized HeLa (F-315) cells stained with the DAB reaction were examined under oil immersion. In the majority of the cells, mitochondria were recognized as discrete bodies in the thinner peripheral portion of the cytoplasm. This observation indicates that in a large proportion of HeLa F-315 cells, at least under the growth conditions used here, the mitochondrial complement is dividied into distinct organelles. This examination also revealed a considerable morphological heterogeneity of mitochondria, which exhibited an ovoid or short rod-like or, less frequently, long filamentous shape, with some evidence of branching. The variability in mitochondrial morphology appeared to be far more prounced between different cells than within individual cells; this cellular heterogeneity was not related in any obvious way to cell-cycle-dependent changes
Models of the diffuse radar backscatter from Mars
The topographies of several debris flow units near the Mount St. Helens Volcano were measured at lateral scales of millimeters to meters in September 1990. The objective was to measure the surface roughness of the debris flows at scales smaller than, on the order of, and larger that the radar wavelength of common remote sensing radars. A laser profiling system and surveying instruments were used to obtain elevation data for square areas that varied in size from 10 to 32 cm. The elevation data were converted to estimates of the power spectrum of surface roughness. The conversions were based upon standard periodogram techniques, and upon a modified spectral estimation technique that was developed
Mammals of Southwestern Arkansas Part II. Rodents
This study investigated the composition and habitat affinities of the mammalian fauna of southwestern Arkansas. The study area was comprised of the 21 counties located south and/or west of and including Pulaski County. The previously existing data set pertaining to the mammals of Arkansas was notably incomplete and this study area in particular, was poorly known mammalogically. Specimens were collected by standard trapping and salvage methods throughout the study area. The mammals considered during this study were limited to those species meeting a set of criteria designed to eliminate species that had been introduced or artificially maintained. This study has accumulated records of 25 species of rodents; over 1500 specimens have been recorded; and a total of 95 new county records have been documented
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