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Annual Environmental Monitoring Report of the Lawrence Berkeley Laboratory, 1980
No full textThe Environmental Monitoring Program of the Lawrence Berkeley Laboratory is described. Data on air and water sampling and continuous radiation monitoring for 1980 are presented, and general trends are discussed
Declarative specification of template-based textual editors
No full textSyntax discoverability has been a crucial advantage of structure editors for new users of a language. Despite this advantage, structure editors have not been widely adopted. Nevertheless, the Cheetah system, developed at Capgemini, leverages a structure editor to aid domain experts modeling tax-benefit rules in a domain specific language. The structure editor suffers from a lack of free form editing and conversions from/to plain text. The Spoofax language workbench, developed at Delft University of Technology, uses a textual editor, which is syntax-aware due to immediate parsing and analyses. In this thesis we describe a migration from Cheetah to Spoofax, which aims to bring the advantages of text editing to the tax-benefit rule modeling language. During the migration, we experienced that current text-based language workbenches, such as Spoofax, require redundant specification of the ingredients for a template-based editor, which is detrimental to the quality of syntactic completion, as consistency and completeness of the definition cannot be guaranteed. We describe the design and implementation of a specification language for syntax definition based on templates. It unifies the specification of parser, pretty printer and template-based editor. We evaluate the template language by application to the tax-benefit rule modeling language and a language for mobile web applications.Software Engineering Research GroupComputer ScienceElectrical Engineering, Mathematics and Computer Scienc
Robert G.E. Murray: the consummate editor
No full textN/AThe presentation of the authors' names and (or) special characters in the title of the pdf file of the accepted manuscript may differ slightly from what is displayed on the item page. The information in the pdf file of the accepted manuscript reflects the original submission by the author
Merging and auto-generation of vortices in wall bounded flows
No full textFor channel flow, we explore how a hairpin eddy may reach a threshold strength required to produce additional hairpins by means of auto-generation. This is done by studying the interaction of two eddies with different initial strengths (but both below the threshold strength), initial sizes and initial streamwise spacing between them. The numerical procedure followed is similar to Zhou et al. (1999). The two eddies were found to merge into a single strongereddy in case of a larger upstream and a smaller downstream eddy placed within a certain initial streamwise separation distance. Subsequently, the resulting stronger eddy was observed to auto-generate new eddies. Merging of eddies thus is a viable explanation for the creation of the threshold strength eddies.Fluid Mechanic
Auto-generation by interaction of weak eddies
No full textFor channel flow, we explore how the interaction of weak eddies produces additional eddies by means of auto-generation. This is done by DNS of two eddies with different initial strengths, initial sizes and initial stream-wise spacing between them. The numerical procedure followed is similar to Zhou et al[1]. The two eddies merge into a single stronger eddy when a larger upstream and a smaller downstream eddy are placed within a certain initial stream-wise separation distance. Subsequently, the resulting stronger eddy is observed to auto-generate new eddies. The non-merging cases with small initial stream wise separation also auto-generate. The auto-generation is characterized by a rapid lift-up of an initial eddy, which blocks the incoming flow and leads to shear- layer roll-up and formation of a new eddy. The same sequence of events is observed in a fully developed turbulent boundary layer[2].Fluid MechanicsMulti Phase System
IF WAR COMES TOMORROW: THE CONTOURS OF FUTURE ARMED CONFLICT
No full textThe concept of future war and the controversial concept of a revolution in military affairs represent concepts and an evolving debate that could easily be perceived to be a pure American concept. The fact however is that Russian thinking on military theory and practice contains a strong line of thinking and concurrent ideas on this issue. The Russians have traditionally held strong and original thoughts on military theory and practice of which the deep operations theory and their views on building their maritime power are but two examples. In this publication much of their future thinking is being articulated and expressed by general Gareev. As the author, his experiences and visions originate from a military career spanning more than fifty years. His views, theories and future perspectives are placed into context by Jacob Kipp who relates the future contours constructed by Gareev to national and international security before presentation of the original ideas of Gareev. The first chapter is a thorough introduction by the editor into the world of Russian thinking and in particular that of general Gareev. In his efforts to familiarise the reader with the author, the issues as well as the concept of a revolution in military affairs and the Russian response, Kipp sets the stage for Gareev's more abstract thoughts on future war. As a publication translated from Russian on a topic not generally well known, this introductory chapter is of much value.</p
Alan F. Clark
No full textALAN F. CLARK
Inducted: 2011
Citation:
For research and leadership excellence in cryogenic properties of materials, superconductivity, and electrical and magnetic standards
Tenure: 1964-2004
Birth: 1936, Milwaukee, Wisconsin
Education:
University of Wisconsin, BS (Physics), 1958
University of Wisconsin, MS (Nuclear Engineering), 1959
University of Michigan, PhD (Nuclear Science), 1964
Positions held:
National Research Council Postdoctoral Associate, NBS (Boulder), 1964-1966
Physicist, Cryogenics Division, Institute for Basic Standards (Boulder), 1966-1977
Leader, Thermophysical Properties of Solids Group, Thermophysical Properties Division, NML (Boulder), 1978-1980
Leader, Superconductor & Magnetic Measurement Group, Electromagnetic Technology Div., NEL (Boulder), 1981-1987
Liaison Scientist, Office of Naval Research, London, UK, (1988-1989)
Leader, Fundamental Electrical Measurements Group, Electricity Division, EEEL (Gaithersburg), 1989-1998
Deputy Chief, Optoelectronics Division, EEEL (Boulder), 1998-2000
Chief, Magnetic Technology Division, EEEL (Boulder), 2001-2003
Chief, Materials Reliability Division, MSEL (Boulder), 2004
Honors:
US Department of Commerce Silver Medal (1987)
Fellow, American Physical Society (1988)
Fellow, Institute of Electrical and Electronics Engineers (1995)
Chairman and President of Board of Directors, Applied Superconductivity Conference
Memberships:
IEEE Transactions on Applied Superconductivity, Editor-in-Chief (1994–1997)
Cryogenics, Americas Editor (1982–1994), Advisory Editor (1977–1981)
Superconductivity, Advisory Editor (1987–1998)
Advances in Cryogenic Engineering—Materials, Plenum, Co-Editor, (1975–1988)
International Cryogenic Monographs, Plenum, Co-Editor (1978–2005)
Materials at Low Temperatures, American Society for Metals, Co-Editor and author (1983)
Founded and chaired: International Cryogenic Materials Conference, International Critical Currents Conference, APS Instrument and Measurement Science Topical Group, Joseph F. Keithley Award Committee, IEEE Committee on Superconductivity, and ASTM B01.08 Committee on Superconductors
Publications:
More than 150 publications and a patent including:
Clark, A.F., Zimmerman, N.M., Williams, E.R., Amar, A., et. al., “Application of Single Electron Tunneling: Precision Capacitance Ratio Measurements,” Appl. Phys. Lett. 66, 2588 (1995)
Early, E.A., Clark, A.F., and Char, K., “Half-Integral Constant Voltage Steps in High-Tc Grain Boundary Junctions,” Appl. Phys. Lett. 62, 3357 (1993)
Moreland, J., Clark, A.F., Goodrich, L.F., Ku, H.C., and Shelton, R.N., “Tunneling Spectroscopy of a La-Sr-Cu-O Break Junction: Evidence for Strong Coupling Superconductivity,” Phys. Rev. B 35, 8711 (1987)
Ekin, J.W., Fickett, F.R., and Clark, A.F., “Effect of Stress on the Critical Current of NbTi Multifilamentary Composite Wire,” Adv. Cryo. Eng. 22, 449 (1977)
Clark, A.F., Childs, G.E., and Wallace, G.H., “Electrical Resistivity of Some Engineering Alloys at Low Temperatures,” Cryogenics 10, 295 (1970)
Clark, A.F., “Low Temperature Thermal Expansion of Some Metallic Alloys,” Cryogenics 8, 282 (1968
Phylogenomics of vertebrate serpins
No full textKumar A. Phylogenomics of vertebrate serpins. Bielefeld (Germany): Bielefeld University; 2010.The serpins constitute a superfamily of proteins that fold into a conserved tertiary structure and employ a sophisticated, irreversible suicide-mechanism of inhibition. More than 6000 serpins have been identified, occurring in all three forms of the life - the eukaryotes, the prokaryotes and the archea. Vertebrate serpins can be conveniently classified into six groups (V1 - V6), based on three independent biological features - gene organization, diagnostic amino acid sites and rare indels. In the present work, the phylogenetic relationships of serpins from Nematostella vectensis, Strongylocentrotus purpuratus, Ciona intestinalis, four fish species, frog, chicken and mammals were investigated, using gene architecture analyses and stringent criteria for identification of orthologs. With some deviations, all vertebrate serpin genes fit into one of the six exon/intron gene classes previously identified, dating the existence and maintenance of these gene organizations before or close to the divergence of fishes. Group V1 and V2 gene families underwent rapid adaptive radiation along the lineages leading to mammals as indicated by an up to nine-fold increased number of family members, accompanied by a rapid functional diversification. In contrast, gene groups V3 to V6 display a rather conservative evolution with little changes since the divergence of fishes and the other vertebrates. The orthology assessment indicates that all vertebrates are equipped with a subset of strongly conserved serpins with functions that can be clearly correlated with basic vertebrate-specific physiology.
None of serpin genes from C. intestinalis shares a common exon-intron architecture organisation with any of the vertebrate serpin gene classes, nor was it possible to identify orthologs of vertebrates. The lack of gene architecture similarity and the complete absence of orthology between urochordate and vertebrate serpins indicate that major changes with bursts of character acquisition must have occurred during evolution of serpins in the time interval separating urochordates from chordates, indicating massive intron gains or losses and events providing C and N-terminal sequence extensions characteristic for today's vertebrate serpins. Lancelets and sea urchin genomes, in contrast, share one orthologous serpin with vertebrates. Rare genomic characters are used to show that orthologs of neuroserpin, a prominent representative of vertebrate group V3 serpin genes, exist in early diverging deuterostomes and probably also in cnidarians, indicating that the origin of a mammalian serpin can be traced back far in the history of eumetazoans. A C-terminal address code assigning association with secretory pathway organelles is present in all neuroserpin orthologs, suggesting that supervision of cellular export/import routes by antiproteolytic serpins is an ancient trait.
Phylogenomic comparisons show that, after establishment of canonical exon-intron patterns in the serpin superfamily at the dawn of vertebrate evolution, multiple intron acquisition events have occurred during diversification of a lineage of actinopterygian fishes. The novel introns were acquired within a limited time interval (on an evolutionary timescale), and no such events were observed in other groups of vertebrates. Examination of the sequences flanking the intron insertion points revealed that the genetic requirements for acquisition of novel introns might be less stringent than previously suggested. Finally, we argue that genome compaction, a phenomenon associated with the fish lineage depicting preferential intron gain, might promote intron acquisition
Human-Accelerated Environmental Change
No full text(Abstract taken from 1991-1992 Distinguished Scientist Lecture Program).
Dr. Likens obtained a B.S. degree from Manchester College in 1957, and his MS. and Ph.D. degrees from the University of Wisconsin, Madison in 1959 and 1962. An instructor and associate professor at Dartmouth College (1963-1969), Dr. Likens moved to Cornell University in 1969, where he was promoted to full professor in 1972 and appointed Charles A. Alexander Professor of Biological Sciences in 1983. Before joining the New York Botanical Garden, Dr. Likens was Chairman of the Section of Ecology and Systematics at Cornell. In addition to his roles with the Botanical Garden, Dr. Likens retains faculty appointments at Yale University (Professor of Biology), Cornell (Adjunct Professor of Ecology and Systematics), and Rutgers University (Professor in the Graduate Field of Ecology). Dr. Likens is a member of the National Academy of Sciences, the American Academy of Arts and Sciences, and the Royal Swedish
Academy of Sciences (foreign member). He is a Fellow of the American Association for the Advancement of Science, a recipient of both a NATO Senior Fellowship and a Guggenheim Fellowship, and the first recipient of the G.E. Hutchinson Award for excellence in research. In addition to numerous other prizes and awards, Dr. Likens has received five honorary doctorates. His work: Dr. Likens is an ecologist best known for his discovery of acid rain in North America. He is a co-director of the Hubbard Brook Ecosystem Study, a multidisciplinary ecological analysis of forest, stream, and lake ecosystems in the White Mountains of New Hampshire. An advisor at state, national, and international levels on the ecological effects of air pollution and acid rain, Dr. Likens is author, co-author, or editor of over 300 research articles and ten books.
Gene E. Likens is Vice President of the New York Botanical Garden, and Director of the Institute of Ecosystem Studies at the Mary Flagler Cary Arboretum, Millbrook, New York.https://digitalcommons.bard.edu/dsls_1991_1992/1001/thumbnail.jp
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