Browsing FAS Scholarly Articles by Title
Now showing items 2623-2642 of 18292
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The Complex X‐Ray Absorbers of NGC 3516 Observed by BEPPOSAX
(IOP Publishing, 2000)In this paper we present the analysis of two broadband (0.1-150 keV) BeppoSAX observations of the Seyfert 1 galaxy NGC 3516. The two observations were taken 4 months apart, on 1996 November 8 and 1997 March 12. We report ... -
Complexation of Flavonoids with Iron: Structure and Optical Signatures
(American Chemical Society, 2008) -
Complexes of Native Ubiquitin and Dodecyl Sulfate Illustrate the Nature of Hydrophobic and Electrostatic Interactions in the Binding of Proteins and Surfactants
(American Chemical Society (ACS), 2011)A previous study, using capillary electrophoresis (CE) [J. Am. Chem. Soc.2008, 130, 17384–17393], reported that six discrete complexes of ubiquitin (UBI) and sodium dodecyl sulfate (SDS) form at different concentrations ... -
Complexities in Prognostication in Advanced Cancer
(American Medical Association (AMA), 2003)Predicting survival and disclosing the prediction to patients with advanced disease, particularly cancer, is among the most difficult tasks that physicians face. With the de-emphasis of prognosis in favor of diagnosis and ... -
The Complexity of Computing the Optimal Composition of Differential Privacy
(Springer Science + Business Media, 2015)In the study of differential privacy, composition theorems (starting with the original paper of Dwork, McSherry, Nissim, and Smith (TCC’06)) bound the degradation of privacy when composing several differentially private ... -
The Complexity of Counting in Sparse, Regular, and Planar Graphs
(Society for Industrial and Applied Mathematics, 2001)We show that a number of graph-theoretic counting problems remain NP-hard, indeed #P-complete, in very restricted classes of graphs. In particular, we prove that the problems of counting matchings, vertex covers, independent ... -
Complexity, Parsing, and Factorization of Tree-Local Multi-Component Tree-Adjoining Grammar
(Massachusetts Institute of Technology Press (MIT Press), 2010)Tree-Local Multi-Component Tree-Adjoining Grammar (TL-MCTAG) is an appealing formalism for natural language representation because it arguably allows the encapsulation of the appropriate domain of locality within its ... -
A Complexity-of-Strategic-Behavior Comparison Between Schulze's Rule and Ranked Pairs
(American Association for Artificial Intelligence, 2012)Schulze's rule and ranked pairs are two Condorcet methods that both satisfy many natural axiomatic properties. Schulze's rule is used in the elections of many organizations, including the Wikimedia Foundation, the Pirate ... -
Complexity: An energetics agenda
(Wiley-Blackwell, 2004) -
Compliance with International Agreements
(Annual Reviews, 1998)The study of compliance with international agreements has gained momentum over the past few years. Since the conclusion of World War II, this research agenda had been marginalized by the predominance of realist approaches ... -
Complications Dawn for Kinetochore Regulation by Aurora
(Proceedings of the National Academy of Sciences, 2012)Organisms must faithfully segregate their chromosomes during cell division; mistakes in this process can be costly and even fatal to the organism (1, 2). During mitosis, replicated chromosomes attach to the spindle, a ... -
The Complications of Controlling Agency Time Discretion: FDA Review Deadlines and Postmarket Drug Safety
(Wiley-Blackwell, 2011)Public agencies have discretion on the time domain, and politicians deploy numerous policy instruments to constrain it. Yet little is known about how administrative procedures that affect timing also affect the quality of ... -
Component-Based Syntheses of Trioxacarcin A, DC-45-A1, and Structural Analogs
(2014)The trioxacarcins are polyoxygenated, structurally complex natural products that potently inhibit the growth of cultured human cancer cells. Here we describe syntheses of trioxacarcin A, DC-45-A1, and structural analogs ... -
A Composite of Multiple Signals Distinguishes Causal Variants in Regions of Positive Selection
(American Association for Advancement of Science, 2010)The human genome contains hundreds of regions whose patterns of genetic variation indicate recent positive natural selection, yet for most the underlying gene and the advantageous mutation remain unknown. We developed a ... -
Composite Quasar Spectra from the Sloan Digital Sky Survey
(IOP Publishing, 2001)We have created a variety of composite quasar spectra using a homogeneous data set of over 2200 spectra from the Sloan Digital Sky Survey (SDSS). The quasar sample spans a redshift range of 0.044 ≤ z ≤ 4.789 and an absolute ... -
Composite reverberation mapping
(Oxford University Press, 2012)Reverberation mapping offers one of the best techniques for studying the inner regions of quasi-stellar objects (QSOs). It is based on cross-correlating continuum and emission-line light curves. New time-resolved optical ... -
Composition and Regulation of Maternal and Zygotic Transcriptomes Reflects Species Specific Reproductive Mode
(BioMed Central, 2010)Background Early embryos contain mRNA transcripts expressed from two distinct origins; those expressed from the mother's genome and deposited in the oocyte (maternal) and those expressed from the embryo's genome after ... -
Composition dependence of Schottky Barrier Heights and Bandgap Energies of GaNxAs1−x Synthesized by Ion Implantation and Pulsed-Laser Melting
(American Institute of Physics, 2008)We present a systematic investigation on the band structure of the GaN<sub>x</sub>As<sub>1−x</sub> alloys synthesized using nitrogen ion implantation followed by pulsed-laser melting and rapid thermal annealing. The evolution ... -
Composition of Zero-Knowledge Proofs with Efficient Provers
(Springer Verlag, 2010)We revisit the composability of different forms of zero-knowledge proofs when the honest prover strategy is restricted to be polynomial time (given an appropriate auxiliary input). Our results are: 1.) When restricted to ...