UScholar Works
 
Filters: Date: "1998" Collection: "ir_uspace"
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CreatorTitleDescriptionSubjectDate
26 Gardner, Reed M.Blood Pressue MonitoringBiomedical Informatics1998
27 Golden, Kenneth M.Broad spectral, interdisciplinary investigation of the electromagnetic properties of sea iceThis paper highlights the interrelationship of research completed by a team of investigators and presented in the several individual papers comprising this Special Section on the Office of Naval Research (ONR), Arlington, VA, Sponsored Sea Ice Electromagnetics Accelerated Research Initiative (ARI).Scattering; Radiation; EM1998
28 Baehr, WolfgangCalcium-sensitive particulate guanylyl cyclase as a modulator of cAMP in olfactory receptor neuronsThe second messengers cAMP and inositol-1,4,5-triphosphate have been implicated in olfaction in various species. The odorant-induced cGMP response was investigated using cilia preparations and olfactory primary cultures. Odorants cause a delayed and sustained elevation of cGMP. A component of this c...Calcium-Binding Proteins; Nerve Tissue Proteins; Rats, Sprague-Dawley1998
29 Ehleringer, James R.Carbon isotope dynamics in Abies amabilis stands in the CascadesCarbon isotope ratios (d13C) of canopy air and carbon isotope discrimination at the ecosystem level were studied in three montane Pacific silver fir (Abies amabilis (Dougl. ex Loud.) Dougl. ex J. Forbes) stands, an old-growth and two younger stands. Spatial and temporal variations of canopy CO2 con...Carbon isotopes; Pacific silver fir; Carbon budget; Soil respiration; Cascade Mountains1998
30 Ehleringer, James R.Carbon isotope ratios of Atacama Desert plants reflect hyperaridity of region in northern ChileLeaf carbon isotope ratios were measured on plants from the coastal portions of the Atacama Desert at Pan de Azucar and Paposo, Chile. Most species possessed C3 photosynthesis, although there were several CAM species, indications of some facultative CAM species, and only one C4 species. The carbon i...Atacama Desert; Carbon isotope ratio; Intercellular carbon dioxide concentration; Hyperaridity1998
31 Riloff, Ellen M.Case study in using linguistic phrases for text categorization on the WWWMost learning algorithms that arc applied to text categorization problems rely on a bag-of-words document representation, i.e., each word occurring in the document is considered as a separate feature. In this paper, we investigate the use of linguistic phrases as input features for text categoriz...Learning algorithms; Text categorization; Linguistic phrases; Information extraction patterns; AutoSlog-TS1998
32 Gardner, Reed M.Clinical Information Systems: Their Application in the ICUBiomedical Informatics1998
33 Dailey, Andrew T.Complement depletion reduces macrophage infiltration and activation during Wallerian degeneration and axonal regenerationAfter peripheral nerve injury, macrophages infiltrate the degenerating nerve and participate in the removal of myelin and axonal debris, in Schwann cell proliferation, and in axonal regeneration. In vitro studies have demonstrated the role serum complement plays in both macrophage invasion and activ...1998
34 Nelson, DonaldConstraint Jacobians for constant-time inverse kinematics and assembly optimizationAn algorithm for the constant-time solution of systems of geometric constraint equations is presented in this work. constraint equations and their Jacobians may be used in conjunction with other numerical methods to solve for a variety of kinematics, dynamics, and assembly optimization problems. The...Constant-time; Inverse kinematics; Constraint Jacobians1998
35 Myers, Chris J.Covering conditions and algorithms for the synthesis of speed-independent circuitsAbstract-This paper presents theory and algorithms for the synthesis of standard C-implementations of speed-independent circuits. These implementations are block-level circuits which may consist of atomic gates to perform complex functions in order to ensure hazard freedom. First, we present Boolean...1998
36 Vardeny, Zeev ValentineCylindrical micolasers and light emitting devices from conducting polymersSubstantially improved, photopumped polymer lasers are demonstrated using microrings and microdisks of various diameters D ranging from 5 to 200 mm. Various cavity-dependent laser modes were observed, which for D,10 mm were dominated by a single longitudinal mode with linewidth of less than 1 Å. Th...Cylindrical micolasers; OLED; Photopumped polymer lasers; Microrings; Microdisks; Microlasers1998
37 Chuaqui, Miguel BasimDanza del OcasoDanza del Ocaso (Dusk Dance) is a dance for three instruments, which evolves from a simple catchy humming tune shared by the three, in a Latin American inspired dancing 7/8 meter, to a complex contrapuntal texture, in a more abstract atonal language. Running throughout is the notion of transformati...Dusk Dance; Latin American; Three instruments1998
38 Chuaqui, Miguel BasimDanza del OcasoDanza del Ocaso (Dusk Dance) is a dance for three instruments, which evolves from a simple catchy humming tune shared by the three, in a Latin American inspired dancing 7/8 meter, to a complex contrapuntal texture, in a more abstract atonal language. Running throughout is the notion of transformati...Dusk Dance; Latin American; Three instruments1998
39 Gopalakrishnan, GaneshDecomposing the proof of correctness of pipelined microprocessorsWe present a systematic approach to decompose and incrementally build the proof of correctness of pipelined microprocessors. The central idea is to construct the abstraction function using completion functions, one per unfinished instruction, each of which specify the effect (on the observables) of ...Pipelined microprocessors; Proof of correctness1998
40 Carter, John B.Design alternatives for shared memory multiprocessorsIn this paper. we consider the design alternatives available for building the next generation DSM machine (e.g., the choice of memory architecture, network technology, and amount and location of per-node remote data cache). To investigate this design space, we have simulated six applications on a wi...Shared memory multiprocessors1998
41 Vardeny, Zeev ValentineDouble-modulation electro-optic sampling for pump-and-probe ultrafast correlation measurementsWe describe a novel electro-optic double-modulation (DM) sampling technique for ultrafast transient spectroscopy, which is characterized by a superior signal-to-noise ratio compared to that of a regular single-modulation technique. DM is achieved by a combined effect of a radio-frequency modulation,...Double-modulation; Electro-optic sampling; Ultrafast transient spectroscopy; Pump; Probe1998
42 Gesteland, Raymond F.; Letsou, Anthea; Ivanov, Ivaylo P.; Simin, Karl; Atkins, John F.Drosophila gene for antizyme requires ribosomal frameshifting for expression and contains an intronic gene for snRNP Sm D3 on the opposite strandPreviously, a Drosophila melanogaster sequence with high homology to the sequence for mammalian antizyme (ornithine decarboxylase antizyme) was reported. The present study shows that homology of this coding sequence to its mammalian antizyme counterpart also extends to a 5* open reading frame (ORF...Ornithine decarboxylase antizyme; Binding proteins1998
43 Gesteland, Raymond F.; Atkins, John F.; Ingram, Jennifer A.; Kelly, Paul J.; Grentzmann, GuidoDual-luciferase reporter system for studying recoding signalsA new reporter system has been developed for measuring translation coupling efficiency of recoding mechanisms such as frameshifting or readthrough. A recoding test sequence is cloned in between the renilla and firefly luciferase reporter genes and the two luciferase activities are subsequently measu...Amino Acid Sequence; Genes, Reporter; HIV; Antizyme; Translation1998
44 Zimmer, ZacharyEducational attainment and transitions in functional status among older TaiwaneseThere is a lengthy history of research examining the relationship between socioeconomic status and health and mortality in Western societies (Antonovsky 1967; Fox 1989; Williams and Collins 1995). Almost unanimously, these investigations show that those with high socioeconomic status are advantaged ...Educational attainment; Functional status; Older Taiwanese1998
45 Gesteland, Raymond F.; Alam, Steve L.; Nelson, Chad; Felden, Brice; Atkins, John F.Effects of 3'-terminal phosphates in RNA produced by ribozyme cleavageDuring the course of a structural investigation of a selenocysteine insertion element from rat Type 1 iodothyronine 59-deiodinase (D1 SECIS), we wished to prepare milligram quantities of an RNA that comprised the upper stem/loop of this RNA structure (41 nt; Fig+ 1A)+ This stem/loop is a stimul...In vitro runoff transcription; RNA; Trans-acting ribozymes1998
46 Davidson, Diane W.Effects of trenching on growth and survival of planted Shorea parvifolia seedlings under pioneer stands in a logged-over forestEffects of trenching on growth and survival of planted Shorea parvifolia seedlings under pioneer stands in a logged-over forest. We conducted an experiment to determine the value of trenching in reducing potentially negative effects of root competition on growth of Shorea parvifolia seedlings plant...Shorea parvifolia; Trenching; Dipterocarp seedlings; Enrichment planting; Pioneer stands; Root competition; Soil compaction; Sabah1998
47 Riloff, Ellen M.Empirical approach to conceptual case frame acquisitionConceptual natural language processing systems usually rely on case frame instantiation to recognize events and role objects in text. But generating a good set of case frames for a domain is time-consuming, tedious, and prone to errors of omission. We have developed a corpus-based algorithm for a...Conceptual case frame acquisition; Case frame instantiation; Corpus-based algorithm1998
48 Gondolo, PaoloEvidence for "sterile neutrino" dark matter?I show that it may be possible to explain the present evidence for a gamma-ray emission from the galactic halo as due to halo WIMP annihilations. Not only the intensity and spatial pattern of the halo emission can be matched but also the relic density of the candidate WIMP can be in the cosmologica...Sterile neutrino; WIMP; Weakly interacting massive particles; Annihilations; Z boson; Higgs sector1998
49 Vardeny, Zeev Valentine; Taylor, P. CraigExcitation energy dependence of photoinduced absorption in intrinsic a-Si:HWe have studied subgap absorption of intrinsic a-Si:H induced by below- and above-gap photoexcitation. We find very similar photoinduced subgap absorption spectra when excited with 2.4 eV or 1.2 eV light. Both spectra exhibit a power-law dependence on laser intensity ?T ~ 1a, where a is 0.5 and 0.7...Intrinsic a-Si:H; Subgap absorption; Photoinduced absorption; Gap photoexcitation; Photomodulation; Electronic states1998
50 Furse, Cynthia M.Faster than fourier -- ultra-efficient time-to-frequency domain conversions for FDTDTwo highly efficient methods of computing magnitude and phase from time-domain data are demonstrated. These methods, based on solution of linear equations, are found to be equally accurate and more efficient than Fourier transform methods (DIT and FFT) for limited numbers of Frequencies. These metho...Finite-difference time-domain method; FDTD; Fourier transform methods; Sine wave magnitude; Sine wave phase1998
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