cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Detecting the Highest Redshift (z > 8) QSOs in a Wide, Near Infrared Slitless Spectroscopic Survey
Creators: name: Roche, Nathan
name: Franzetti, Paolo
name: Garilli, Bianca
name: Zamorani, Giovanni
name: Cimatti, Andrea
name: Rossetti, Emanuel
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We investigate the prospects of extending observations of high redshift QSOs to z>8 by means of a very wide-area near-infrared slitless spectroscopic survey, e.g. the planned survey with the European Space Agency's Euclid telescope. For any QSOs at z>8.06 the strong Lyman-alpha line will enter the wavelength range of the Euclid near-infrared spectrometer and imaging photometer (NISP). We perform a detailed simulation of Euclid NISP slitless spectroscopy (with the parameters of the wide survey) in an artificial field containing QSO spectra at all redshifts up to z=12. The simulation spectra are analysed with an automated redshift finder, and a detection rate estimated as a function of H magnitude and redshift. Spectroscopic identification of QSOs would reach deeper limits for the redshift ranges where either H-alpha (0.678.06) is visible. Furthermore, if photometrically-selected z>8 spectra can be re-examined and re-fitted to minimize the effects of spectral contamination, the QSO detection rate in the Lyman-alpha window will be increased by an estimated 60% and will then be better here than at any other redshift, with an effective limit H=21.5. With an extrapolated rate of QSO evolution, we predict the Euclid wide (15000 sq. deg.) spectroscopic survey will identify 20-35 (19-33 with a small correction for lineless objects) very luminous QSOs at z>8.06.
description: 16 pages, 19 figures, accepted for publication in MNRAS
An integrated system for dextrous manipulation
Creators: name: Allen, Peter K.
name: Michelman, Paul
name: Roberts, Kenneth S.
Publisher: name: Columbia University
Year: 1989
Subjects: Robotics

description: The authors describe an integrated system for dextrous manipulation using a Utah-MIT hand that makes it possible to look at the higher levels of control in a number of grasping and manipulation tasks. The system consists of a number of low-level system primitives for integrated hand and robotic arm movement, tactile sensors mounted on the fingertips, sensing primitives to utilize joint position, tendon force and tactile array feedback, and a high-level programming environment that allows task level scripts to be created for grasping and manipulation tasks are described that have been implemented with this system.
Active Learning for SAT Solver Benchmarking
Creators: name: Fuchs, Tobias
name: Bach, Jakob
name: Iser, Markus
Publisher: name: Springer Nature Switzerland AG
Year: 2023
Subjects: Propositional satisfiability
benchmarking
active learning

description: Benchmarking is a crucial phase when developing algorithms. This also applies to solvers for the SAT (propositional satisfiability) problem. Benchmark selection is about choosing representative problem instances that reliably discriminate solvers based on their runtime. In this paper, we present a dynamic benchmark selection approach based on active learning. Our approach predicts the rank of a new solver among its competitors with minimum runtime and maximum rank prediction accuracy. We evaluated this approach on the Anniversary Track dataset from the 2022 SAT Competition. Our selection approach can predict the rank of a new solver after about 10 % of the time it would take to run the solver on all instances of this dataset, with a prediction accuracy of about 92 %. We also discuss the importance of instance families in the selection process. Overall, our tool provides a reliable way for solver engineers to determine a new solver’s performance efficiently.
Usefulness of functional splicing analysis to confirm precise disease pathogenesis in Diamond-Blackfan anemia caused by intronic variants in RPS19
Creators: name: Takafuji, Satoru
name: Mori, Takeshi
name: Nishimura, Noriyuki
name: Yamamoto, Nobuyuki
name: Uemura, Suguru
name: Nozu, Kandai
name: Terui, Kiminori
name: Toki, Tsutomu
name: Ito, Etsuro
name: Muramatsu, Hideki
name: Takahashi, Yoshiyuki
name: Matsuo, Masafumi
name: Yamamura, Tomohiko
name: Iijima, Kazumoto
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Biochemistry
subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: Cancer
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Diamond-Blackfan anemia (DBA) is mainly caused by pathogenic variants in ribosomal proteins and 22 responsible genes have been identified to date. The most common causative gene of DBA is RPS19 [NM_001022.4]. Nearly 180 RPS19 variants have been reported, including three deep intronic variants outside the splicing consensus sequence (c.72-92A > G, c.356 + 18G > C, and c.411 + 6G > C). We also identified one case with a c.412-3C > G intronic variant. Without conducting transcript analysis, the pathogenicity of these variants is unknown. However, it is difficult to assess transcripts because of their fragility. In such cases, in vitro functional splicing assays can be used to assess pathogenicity. Here, we report functional splicing analysis results of four RPS19 deep intronic variants identified in our case and in previously reported cases. One splicing consensus variant (c.411 + 1G > A) was also examined as a positive control. Aberrant splicing with a 2-bp insertion between exons 5 and 6 was identified in the patient samples and minigene assay results also identified exon 6 skipping in our case. The exon 6 skipping transcript was confirmed by further evaluation using quantitative RT-PCR. Additionally, minigene assay analysis of three reported deep intronic variants revealed that none of them showed aberrant splicing and that these variants were not considered to be pathogenic. In conclusion, the minigene assay is a useful method for functional splicing analysis of inherited disease.
Issues in building intelligent grasping systems
Creators: name: Allen, Peter K.
Publisher: name: Columbia University
Year: 1990
Subjects: Robotics
Artificial intelligence

description: Intelligent robotic systems will need to have the capability to grasp, recognize, inspect and manipulate objects. Our experience in building an intelligent system with these capabilities has forced us to confront a number of important issues that we have found to be important in building an intelligent grasping system. The issues are 1) the need for multiple sensing capability in hands, 2) synchronization of actuation devices, and 3) coordinated contact movement on a surface. We demonstrate how these issues are overcome with an example of haptic sensing with our Utah/MIT hand system.
Finding proto-spectroscopic binaries: Precise multi-epoch radial velocities of 7 protostars in rho-Ophiuchus
Creators: name: Almeida, P. Viana
name: Melo, C.
name: Santos, N. C.
name: Figueira, P.
name: Sterzik, M.
name: Gameiro, J. F.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The formation of spectroscopic binaries (SB) may be a natural byproduct of star formation. The early dynamical evolution of multiple stellar systems after the initial fragmentation of molecular clouds leaves characteristic imprints on the properties of young, multiple stars. The discovery and the characterization of the youngest SB will allow us to infer the mechanisms and timescales involved in their formation. Our work aims to find spectroscopic companions around young stellar objects (YSO). We present a near-IR high-resolution (R ~ 60000) multi-epoch radial velocity survey of 7 YSO in the star forming region (SFR) rho-Ophiuchus. The radial velocities of each source were derived using a two-dimensional cross-correlation function, using the zero-point established by the Earth's atmosphere as reference. More than 14 spectral lines in the CO (0-2) bandhead window were used in the cross-correlation against LTE atmospheric models to compute the final results. We found that the spectra of the protostars in our sample agree well with the predicted stellar photospheric profiles, indicating that the radial velocities derived are indeed of stellar nature. Three of the targets analyzed exhibit large radial velocity variations during the three observation epochs. These objects - pending further confirmation and orbital characteristics - may become the first evidence for proto-spectroscopic binaries, and will provide important constraints on their formation. Our preliminary binary fraction (BF) of ~71% (when merging our results with those of previous studies) is in line with the notion that multiplicity is very high at young ages and therefore a byproduct of star formation
Local P Violation Effects and Thermalization in QCD: Views from Quantum Field Theory and Holography
Creators: name: Zhitnitsky, Ariel R.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Lattice (hep-lat)
subject: Nuclear Experiment (nucl-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We argue that the local violation of P and CP invariance in heavy ion collisions and the universal thermal aspects observed in high energy collisions are in fact two sides of the same coin, and both are related to quantum anomalies of QCD. We argue that the low energy relations representing the quantum anomalies of QCD are saturated by coherent low dimensional vacuum configurations as observed in Monte Carlo lattice studies. The thermal spectrum and approximate universality of the temperature with no dependence on energy of colliding particles in this framework is due to the fact that the emission results from the distortion of these low dimensional vacuum sheets rather than from the colliding particles themselves. The emergence of the long- range correlations of P odd domains (a feature which is apparently required for explanation of the asymmetry observed at RHIC and LHC) is also a result of the same distortion of the QCD vacuum configurations. We formulate the corresponding physics using the effective low energy effective Lagrangian. We also formulate the same physics in terms of the dual holographic picture when low-dimensional sheets of topological charge embedded in 4d space, as observed in Monte Carlo simulations, are identified with D2 branes. Finally, we argue that study of these long range correlations in heavy ion collisions could serve as a perfect test of a proposal that the observed dark energy in present epoch is a result of a tiny deviation of the QCD vacuum energy in expanding universe from its conventional value in Minkowski spacetime.
description: final version to appear in Nucl.Phys. A
Penning-Trap Mass Measurements of the Neutron-Rich K and Ca Isotopes: Resurgence of the N = 28 Shell Strength
Creators: name: Lapierre, A.
name: Brodeur, M.
name: Brunner, T.
name: Ettenauer, S.
name: Finlay, P.
name: Gallant, A. T.
name: Simon, V. V.
name: Delheij, P.
name: Lunney, D.
name: Ringle, R.
name: Savajols, H.
name: Dilling, J.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: We present Penning-trap mass measurements of neutron-rich 44,47-50K and 49,50Ca isotopes carried out at the TITAN facility at TRIUMF-ISAC. The 44K mass measurement was performed with a charge-bred 4+ ion utilizing the TITAN EBIT, and agrees with the literature. The mass excesses obtained for 47K and 49,50Ca are more precise and agree with the values published in the 2003 Atomic Mass Evaluation (AME'03). The 48,49,50K mass excesses are more precise than the AME'03 values by more than one order of magnitude. For 48,49K, we find deviations by 7 sigma and 10 sigma, respectively. The new 49K mass excess lowers significantly the two-neutron separation energy at the neutron number N=30 compared with the separation energy calculated from the AME'03 mass-excess values, and thus, increases the N=28 neutron-shell gap energy at Z=19 by approximately 1 MeV.
description: 6 pages, 5 figures, accepted for PRC
Tracking the fate of ambient SO2 using sulfur isotopes, oxidant mixing ratios, and hydrocarbon mixtures.
Creators: name: Amiri, Neda
Publisher: name: Science
Year: 2019
Subjects: subject: Atmospheric Science

description: Field measurements for SO2 and the formation of sulfate were investigated in the presence of high concentrations of hydrocarbons in the Athabasca oil sands region to help understand sulfate formation pathways and its environmental impacts (Chapter 2). Results indicated the potential importance of SO2 oxidation in TMI-catalyzed pathway in the region during summer which has not been shown before. Oxidation of SO2 with sCIs is shown to be important in the atmosphere and evidence of the importance of this pathway is observed in the Athabasca oil sands region. The sulphur isotope fractionation factor for oxidation of SO2 with sCIs is investigated for the first time in a series of laboratory studies. Measurements of the sulfur isotope fractionation factor for SO2 oxidation with sCIs formed from limonene at 25°C are presented in chapter 3 and α found to be (34)α_sCI=0.992±0.002. Preliminary data for ∆33S and ∆36S during SO2 oxidation with sCIs were 0.061±0.02 ‰ and -0.87±0.02 ‰, respectively. A 1D box model was performed based on the fractionation factor for SO2 oxidation by sCIs. The results suggest that the sCI pathway may contribute 25% of SO2 oxidation in the atmosphere. Since the Athabasca oil sands region is known to have high emissions of hydrocarbons as well as SO2, investigating the relationship between hydrocarbons and sulfur compounds is of great interest in this region. Sulphate, SO2, and hydrocarbon concentration measurements in the Athabasca oil sands region as part of the JOSM program were used to determine possible sCIs precursors in the region and the role of particles acidity in SOA formation (chapter 4). In addition to monoterpenes, styrene also showed positive correlation with F(s) and can be a precursor to sCIs. Simultaneous data for sulfate and organic compounds in aerosols showed that acid catalyzed enhancement may be an important process for sulfate to ammonium ratio less than 3.
The asymptotic behavior of globally smooth solutions of bipolar non-isentropic compressible Euler-Maxwell system for plasma
Creators: name: Wang, Shu
name: Feng, Yuehong
name: Li, Xin
Publisher: name: arXiv
Year: 2012
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: The bipolar non-isentropic compressible Euler-Maxwell system is investigated in $R^3$ in the present paper, and the $L^q$ time decay rate for the global smooth solution is established. It is shown that the total densities, total temperatures and magnetic field of two carriers converge to the equilibrium states at the same rate $(1+t)^{-3/2+3q/2}$ in $L^q$ norm. But, both the difference of densities and the difference of temperatures of two carriers decay at the rate $(1+t)^{-2-\frac{1}{q}}$, and the velocity and electric field decay at the rate $(1+t)^{-3/2+\frac{1}{2q}}$. This phenomenon on the charge transport shows the essential difference between the non-isentropic unipolar Euler-Maxwell and the bipolar isentropic Euler-Maxwell system.
description: 27pages
title: Towards a theoretical framework for studying “pressure” in the EU constitutional order
Creators: name: Gadbled, Robin
Publisher: name: Forum Transregionale Studien e.V.
Year: 2023
Subjects: subject: Europarecht
subject: Rechtsnorm
subject: 94
subject: 340.09

description: This paper develops a theoretical framework for the study of “pressure” in EU constitutional legal scholarship. Pressure is understood as a promise of consequences unless certain requirements are complied with. This encompasses both conditionality mechanisms and long-standing EU constitutional mechanics relying on a diversity of legal provisions, including for motions of censure, for veto powers, for sanctions, or for the discontinuation of financial assistance. While pressure is not law per se, it can be an object of law, and often appears as the product of careful EU constitutional design by the Masters of the Treaties. However, requirements backed by pressure have a different structure than requirements backed by EU legal obligations, which comes with important implications concerning the adequacy of the constitutional safeguards provided for by EU law to constrain its uses, notably by EU institutions on Member States.
description: Working Papers, Forum Transregionale Studien, vol. 12/2023
Sequential Cross-Validated Bandwidth Selection Under Dependence and Anscombe-Type Extensions to Random Time Horizons
Creators: name: Steland, Ansgar
Publisher: name: arXiv
Year: 2012
Subjects: subject: Probability (math.PR)
subject: Statistics Theory (math.ST)
subject: Applications (stat.AP)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences
subject: 60G10, 62G08, 62L12

description: To detect changes in the mean of a time series, one may use previsible detection procedures based on nonparametric kernel prediction smoothers which cover various classic detection statistics as special cases. Bandwidth selection, particularly in a data-adaptive way, is a serious issue and not well studied for detection problems. To ensure data adaptation, we select the bandwidth by cross-validation, but in a sequential way leading to a functional estimation approach. This article provides the asymptotic theory for the method under fairly weak assumptions on the dependence structure of the error terms, which cover, e.g., GARCH($p,q$) processes, by establishing (sequential) functional central limit theorems for the cross-validation objective function and the associated bandwidth selector. It turns out that the proof can be based in a neat way on \cite{KurtzProtter1996}'s results on the weak convergence of \ito integrals and a diagonal argument. Our gradual change-point model covers multiple change-points in that it allows for a nonlinear regression function after the first change-point possibly with further jumps and Lipschitz continuous between those discontinuities. In applications, the time horizon where monitoring stops latest is often determined by a random experiment, e.g. a first-exit stopping time applied to a cumulated cost process or a risk measure, possibly stochastically dependent from the monitored time series. Thus, we also study that case and establish related limit theorems in the spirit of \citet{Anscombe1952}'s result. The result has various applications including statistical parameter estimation and monitoring financial investment strategies with risk-controlled early termination, which are briefly discussed.
DEP Bulletin:Volume 37 Issue 9
Creators: name: No Name Supplied
Publisher: name: No Publisher Supplied
Year: 2013

description: The DEP bulletin is a semi-monthly publication of the New Jersey Department of Environmental Protection. It contains a list of construction permit applications recently filed or acted upon by the Department along with a calendar of events of interest, a schedule of public hearings, and Environmental Impact Statements acted upon during the period.
Real-time visual servoing
Creators: name: Allen, Peter K.
name: Yoshimi, Billibon
name: Timcenko, Aleksandar
Publisher: name: Columbia University
Year: 1991
Subjects: Robotics

description: A real-time tracking algorithm in conjunction with a predictive filter to allow real-time visual servoing of a robotic arm that is tracking a moving object is described. The system consists of two calibrated (but unregistered) cameras that provide images to a real-time, pipeline-parallel optic-flow algorithm that can robustly compute optic-flow and calculate the 3-D position of a moving object at approximately 5-Hz rates. These 3-D positions of the moving object serve as input to a predictive kinematic control algorithm that uses an α-β-γ filter to update the position of a robotic arm tracking the moving object. Experimental results are presented for the tracking of a moving model train in a variety of different trajectories.
Cost-effectiveness of screening and treatment for schistosomiasis among refugees coming to Canada
Creators: name: Webb, John Angus
Publisher: name: Cumming School of Medicine
Year: 2019
Subjects: subject: Economics
subject: Health Sciences
subject: Public Health

description: Background: Depending on their countries of origin, between 12% and 73% of resettled refugees and asylum seekers from endemic countries are infected with schistosomiasis when they arrive in Canada. Many are asymptomatic, but they are at risk for complications that may develop decades later. In Canada, clinicians previously practiced watchful waiting, treating patients if they developed symptoms; but in 2011 new guidelines recommended screening and treatment instead. In the United States, refugees from Africa are presumptively treated for schistosomiasis before they leave their country of origin. The cost-effectiveness of screening or presumptive treatment for schistosomiasis has never been studied. Methods: We constructed a decision-tree model to examine the cost-effectiveness of three management strategies: watchful waiting; screening and treatment; and presumptive treatment. We obtained model data from the literature and other sources, predicting deaths and chronic complications caused by schistosomiasis; as well as costs, and net monetary benefit. Results: Presumptive treatment was cost-saving if the prevalence of schistosomiasis in the target population was greater than 2.4%. In our base case analysis, presumptive treatment was associated with an increase of 0.15 quality-adjusted life years and a cost savings of $383 per person, compared to watchful waiting. It was also more effective and less costly than screening and treatment. Interpretation: Presumptive treatment for schistosomiasis among recently resettled refugees and asylum claimants to Canada is less costly and more effective than watchful waiting or screening and treatment, in groups with prevalence greater than 2.4%. Our results support a revision of the current Canadian guidelines.
Organización de colecciones digitales de imágenes con Tropy
Creators: name: García Bendezú, Luis
Publisher: name: Zenodo
Year: 2023

description: Presentación en PDF del taller "Organización de colecciones digitales de imágenes con Tropy" desarrollado en la Universidad de Antioquia (Colombia) el 15 de septiembre de 2023 por el expositor Luis García Bendezú.
Mechanisms of transcription modulation by low concentrations of rifampicin in Salmonella typhimurium
Creators: name: Yim, Grace
Publisher: name: University of British Columbia
Year: 2011

description: Screening of a S. typhimurium promoter-luxCDABE fusion library revealed that the antibiotic rifampicin modulated transcription of a subset of the fusions. This thesis examines promoter sequences of three down-modulated (fliA, flgK, invF) and three up-modulated (spvA, traS, STM3595) promoters in an effort to elucidate the mechanisms by which sub-minimal inhibitory concentrations of rifampicin modulate transcription. Reverse transcriptase polymerase chain reaction was used as a second method to examine expression in response to rifampicin and the results were consistent with reporter data. Transcription modulation was abolished in a strain carrying a rifampicin resistance mutation in the gene for the beta subunit of RNA polymerase suggesting that rifampicin effects are mediated by its binding to RNA polymerase. Transcription modulation of the selected genes was observed after cells were treated with several antimicrobials; the effects on transcription differed from those of rifampicin. DNA deletion studies of two promoters for genes involved in flagellar biosynthesis, PfliA and PflgK, showed that ~50 bp fragments containing the δ²⁸-dependent promoters were sufficient to observe rifampicin mediated down-modulation in culture. For PinvF, a promoter specific activator binding site was required for down-modulation. In vitro transcription from PinvF and PflgK was hypersensitive to rifampicin when compared to a control. The results indicate that the selectivity of rifampicin mediated down-modulation reflects variation in the direct interaction of rifampicin with different promoter:RNA polymerase complexes. In contrast to the down-modulated promoters, factors others than rifampicin and RNA polymerase holoenzyme may be involved in up-modulation. Transcription up-modulation from the promoters for STM3595 and traS could not be shown in vitro. In vivo, time course assays of rifampicin induced transcription up-modulation showed a lag period between rifampicin addition and induction. Use of spent media containing rifampicin was not able to shorten the lag phase, suggesting that an intracellular rather than a secreted factor was involved. DNA deletion studies suggested that nucleotides downstream of the transcription start site were involved with up-modulation. A potential intrinsic terminator was found in the untranslated region of the STM3595 transcript, suggesting that transcription attenuation may be involved in rifampicin mediated up-modulation.
title: Гарантии обеспечения прав членов семьи и защита семейных отношений в Российской Федерации
Creators: name: ELS IPR BOOKS
Publisher: name: Северо-Кавказский федеральный университет
Year: 2024

description: В коллективной монографии сделана попытка исследования механизма гарантий в процессе обеспечения прав членов семьи и защиты семейных отношений в России, истории современных взглядов на правозащитное движение. Исследованы существующие и предложены эффективные инструменты взаимодействия государства и общества с участием бизнеса в осуществлении демографической политики страны. Рассмотрен процесс правозащитной деятельности в механизме защиты материнства, отцовства и детства на примере Ставропольского края, а также правовой защиты детей с ограниченными возможностями, оставшимися без попечения родителей и детей мигрантов. Адресована преподавателям юридических институтов и университетов, аспирантам, магистрантам и всем интересующимся проблемами гарантий обеспечения прав всех членов семьи в стране и деятельностью правозащитного механизма в Российской Федерации.
Fourth virial coefficients of asymmetric nonadditive hard-disc mixtures
Creators: name: Saija, Franz
name: Santos, Andrés
name: Yuste, Santos B.
name: de Haro, Mariano López
Publisher: name: arXiv
Year: 2012
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: The fourth virial coefficient of asymmetric nonadditive binary mixtures of hard disks is computed with a standard Monte Carlo method. Wide ranges of size ratio ($0.05\leq q\leq 0.95$) and nonadditivity ($-0.5\leq Δ\leq 0.5$) are covered. A comparison is made between the numerical results and those that follow from some theoretical developments. The possible use of these data in the derivation of new equations of state for these mixtures is illustrated by considering a rescaled virial expansion truncated to fourth order. The numerical results obtained using this equation of state are compared with Monte Carlo simulation data in the case of a size ratio $q=0.7$ and two nonadditivities $Δ=\pm 0.2$.
description: 9 pages, 7 figures; v2: section on equation of state added; tables moved to supplementary material (http://jcp.aip.org/resource/1/jcpsa6/v136/i18/p184505_s1#artObjSF)
Main Street with Church Steeple, April 10, 1938
Creators: name: Unknown
Publisher: name: Unknown
Year: 1938
Subjects: Sag Harbor
Photographs
Buildings
Churches
Steeples
Main Street
Business districts
Stores & shops
Automobiles

description: This photograph shows the church steeple on April 10, 1938 not long before the hurricane knocked over the steeple. The view is from the foot of Main Street, looking up from near the current roundabout, north of the American Hotel, closer to the bridge to North Haven. streetlights in the middle of the traffic island are visible as are many local businesses.
Stellar Populations of UV-Selected Active Galactic Nuclei Host Galaxies at z ~ 2 - 3
Creators: name: Hainline, Kevin N.
name: Shapley, Alice E.
name: Greene, Jenny E.
name: Steidel, Charles C.
name: Reddy, Naveen A.
name: Erb, Dawn K.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We use stellar population synthesis modeling to analyze the host galaxy properties of a sample of 33 UV-selected, narrow-lined active galactic nuclei (AGNs) at z ~ 2 - 3. In order to quantify the contribution of AGN emission to host galaxy broadband spectral energy distributions (SEDs), we use the subsample of 11 AGNs with photometric coverage spanning from rest-frame UV through near-IR wavelengths. Modeling the SEDs of these objects with a linear combination of stellar population and AGN templates, we infer the effect of the AGN on derived stellar population parameters. We also estimate the typical bias in derived stellar populations for AGNs lacking rest-frame near-IR wavelength coverage, and develop a method for inferring the true host galaxy properties. We compare AGN host galaxy properties to those of a sample of UV-selected, star-forming non-AGNs in the same redshift range, including a subsample carefully matched in stellar mass. Although the AGNs have higher masses and SFRs than the full non-active sample, their stellar population properties are consistent with those of the mass-selected sample, suggesting that the presence of an AGN is not connected with the cessation of star-formation activity in star-forming galaxies at z ~ 2 - 3. We suggest that a correlation between M_BH and galaxy stellar mass is already in place at this epoch. Assuming a roughly constant Eddington ratio for AGNs at all stellar masses, we are unable to detect the AGNs in low-mass galaxies because they are simply too faint.
description: 30 pages, 16 figures, ApJ accepted. Replaced with accepted version
Computer Security Research with Human Subjects: Risks, Benefits and Informed Consent
Creators: name: Johnson, Maritza Lupe
name: Bellovin, Steven Michael
name: Keromytis, Angelos D.
Publisher: name: Columbia University
Year: 2011
Subjects: Computer science

description: Computer security research frequently entails studying real computer systems and their users; studying deployed systems is critical to understanding real world problems, so is having would-be users test a proposed solution. In this paper we focus on three key concepts in regard to ethics: risks, benefits, and informed consent. Many researchers are required by law to obtain the approval of an ethics committee for research with human subjects, a process which includes addressing the three concepts focused on in this paper. Computer security researchers who conduct human subjects research should be concerned with these aspects of their methodology regardless of whether they are required to by law, it is our ethical responsibility as professionals in this field. We augment previous discourse on the ethics of computer security research by sparking the discussion of how the nature of security research may complicate determining how to treat human subjects ethically. We conclude by suggesting ways the community can move forward.
Constraints and tests of the OPERA superluminal neutrinos
Creators: name: Bi, Xiao-Jun
name: Yin, Peng-Fei
name: Yu, Zhao-Huan
name: Yuan, Qiang
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The superluminal neutrinos detected by OPERA indicates Lorentz invariance violation (LIV) of the neutrino sector at the order of $10^{-5}$. We study the implications of the result in this work. We find that such a large LIV implied by OPERA data will make the neutrino production process $π\to μ+ ν_μ$ kinematically forbidden for neutrino energy greater than about 5 GeV. The OPERA detection of neutrinos at 40 GeV can constrain the LIV parameter to be smaller than $3\times 10^{-7}$. Furthermore the neutrino decay in the LIV framework will modify the neutrino spectrum greatly. The atmospheric neutrino spectrum measured by IceCube can constrain the LIV parameter to the level of $10^{-12}$. The future detection of astrophysical neutrinos of Galactic sources is expected to be able to give even stronger constraint on the LIV parameter of neutrinos.
description: 5 pages (2 column), 4 figures; published in Phys. Rev. Lett
DEP Bulletin:Volume 37 Issue 10
Creators: name: No Name Supplied
Publisher: name: No Publisher Supplied
Year: 2013

description: The DEP bulletin is a semi-monthly publication of the New Jersey Department of Environmental Protection. It contains a list of construction permit applications recently filed or acted upon by the Department along with a calendar of events of interest, a schedule of public hearings, and Environmental Impact Statements acted upon during the period.
e-NeXSh: Achieving an Effectively Non-Executable Stack and Heap via System-Call Policing
Creators: name: Kc, Gaurav S.
name: Keromytis, Angelos D.
Publisher: name: Columbia University
Year: 2005
Subjects: Computer science

description: We present e-NeXSh, a novel security approach that utilises kernel and LIBC support for efficiently defending systems against process-subversion attacks. Such attacks exploit vulnerabilities in software to override its program control-flow and consequently invoke system calls, causing out-of-process damage. Our technique defeats such attacks by monitoring all LIBC function and system-call invocations, and validating them against process-specific information that strictly prescribes the permissible behaviour for the program (unlike general sandboxing techniques that require manually maintained, explicit policies, we use the program code itself as a guideline for an implicit policy). Any deviation from this behaviour is considered malicious, and we halt the attack, limiting its damage to within the subverted process. We implemented e-NeXSh as a set of modifications to the Linux-2.4.18-3 kernel and a new user-space shared library (e-NeXSh.so). The technique is transparent, requiring no modifications to existing libraries or applications. e-NeXSh was able to successfully defeat both code-injection and LIBC-based attacks in our effectiveness tests. The technique is simple and lightweight, demonstrating no measurable overhead for select UNIX utilities, and a negligible 1.55% performance impact on the Apache Web server.
title: 'Piteous overthrows' : pity and identity in early modern English literature
Creators: name: Johnson, Toria Anne
Publisher: name: University of St Andrews
Year: 2013

description: This thesis traces the use of pity in early modern English literature, highlighting in particular the ways in which the emotion prompted personal anxieties and threatened Burckhardtian notions of the self-contained, autonomous individual, even as it acted as a central, crucial component of personal identity. The first chapter considers pity in medieval drama, and ultimately argues that the institutional changes that took place during the Reformation ushered in a new era, in which people felt themselves to be subjected to interpersonal emotions – pity especially – in new, overwhelming, and difficult ways. The remaining three chapters examine how pity complicates questions of personal identity in Renaissance literature. Chapter Two discusses the masculine bid for pity in courtly lyric poetry, including Philip Sidney’s Astrophil and Stella and Barnabe Barnes’s Parthenophil and Parthenophe, and considers the undercurrents of vulnerability and violation that emerge in the wake of unanswered emotional appeals. This chapter also examines these themes in Spenser’s The Faerie Queene and Sidney’s Arcadia. Chapter Three also picks up the element of violation, extending it to the pitiable presentation of sexual aggression in Lucrece narratives. Chapter Four explores the recognition of suffering and vulnerability across species boundaries, highlighting the use of pity to define humanity against the rest of the animal kingdom, and focusing in particular on how these questions are handled by Shakespeare in The Tempest and Ben Jonson, in Bartholomew Fair. This work represents the first extended study of pity in early modern English literature, and suggests that the emotion had a constitutive role in personal subjectivity, in addition to structuring various forms of social relation. Ultimately, the thesis contends that the early modern English interest in pity indicates a central worry about vulnerability, but also, crucially, a belief in the necessity of recognising shared, human weakness.
Sensing and describing 3-D structure
Creators: name: Allen, Peter K.
Publisher: name: Columbia University
Year: 1986
Subjects: Robotics

description: Discovering the three dimensional structure of an object is important for a variety of robot tasks. Single sensor systems such as machine vision systems cannot reliably compute three dimensional structure in unconstrained environments. Active, exploratory tactile sensing can be used to complement passive stereo vision data to derive robust surface and feature descriptions of objects. The control for tactile sensing is provided by the vision system which provides regions of interest that the tactile system can explore. The descriptions of surfaces and features are accurate and can be used in a later matching phase against a model data base of objects to identify the object and its position and orientation in space.
Haptic object recognition using a multi-fingered dextrous hand
Creators: name: Allen, Peter K.
name: Roberts, Kenneth S.
Publisher: name: Columbia University
Year: 1989
Subjects: Robotics
Artificial intelligence

description: The use of a dextrous, multifingered hand for high-level object recognition tasks is considered. The paradigm is model-based recognition in which the objects are modeled and recovered as superquadratics, which are shown to have a number of important attributes that make them well suited for such a task. Experiments have been performed to recover the shape of objects using sparse contacts point data from the hand with promising results. The authors also propose an approach to using tactile data in conjunction with the dextrous hand to build a library of grasping and exploration primitives that can be used in recognizing and grasping more complex multipart objects.
Production of Massive Color-Octet Vector Bosons at Next-to-Leading Order
Creators: name: Chivukula, R. Sekhar
name: Farzinnia, Arsham
name: Foadi, Roshan
name: Simmons, Elizabeth H.
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We report the first complete calculation of QCD corrections to the production of a massive color-octet vector boson. Our next-to-leading-order (NLO) calculation includes both virtual corrections as well as corrections arising from the emission of gluons and light quarks, and we demonstrate the reduction in factorization-scale dependence relative to the leading-order approximation used in previous hadron collider studies. We show that the QCD NLO corrections to coloron production are as large as 30%, and that the residual factorization scale-dependence is reduced to of order 2%. We also calculate the K-factor and the p_T spectrum for coloron production, since these are valuable for comparison with experiment. Our results apply directly to the production of the massive color-octet vector bosons in axigluon, topcolor, and coloron models, and approximately to the production of KK gluons in extra-dimensional models or color-octet technivector mesons in technicolor models.
description: 23 pages, 35 pdf figures included. Added discussion of PT spectrum, tables of values of K-factor, and references
The Effect of DNS Delays on Worm Propagation in an IPv6 Internet
Creators: name: Kamra, Abhinav
name: Feng, Hanhua
name: Misra, Vishal
name: Keromytis, Angelos D.
Publisher: name: Columbia University
Year: 2005
Subjects: Computer science

description: It is a commonly held belief that IPv6 provides greater security against random-scanning worms by virtue of a very sparse address space. We show that an intelligent worm can exploit the directory and naming services necessary for the functioning of any network, and we model the behavior of such a worm in this paper. We explore via analysis and simulation the spread of such worms in an IPv6 Internet. Our results indicate that such a worm can exhibit propagation speeds comparable to an IPv4 random-scanning worm. We develop a detailed analytical model that reveals the relationship between network parameters and the spreading rate of the worm in an IPv6 world. We also develop a simulator based on our analytical model. Simulation results based on parameters chosen from real measurements and the current Internet indicate that an intelligent worm can spread surprising fast in an IPv6 world by using simple strategies. The performance of the worm depends heavily on these strategies, which in turn depend on how secure the directory and naming services of a network are. As a result, additional work is needed in developing detection and defense mechanisms against future worms, and our work identifies directory and naming services as the natural place to do it.
Pitch-based emphasis detection for characterization of meeting recordings
Creators: name: Kennedy, Lyndon S.
name: Ellis, Daniel P. W.
Publisher: name: Columbia University
Year: 2003
Subjects: Electrical engineering
Artificial intelligence

description: The automatic extraction of key utterances in spoken data has emerged as an interesting and difficult topic in automatic speech recognition. "Emphasis" or "excitement" may be a useful identifier for these utterances of interest. We undertake the task of reliably and automatically identifying emphasized or excited utterances in natural speech in a meeting setting. We start by endeavoring to establish reliable ground truth emphasis labels by using several hand-labelers. The results show that human listeners can reliably identify emphasized utterances in meeting recordings. We then build an automatic emphasis detection system, which uses normalized pitch as its only acoustic predictor. The results show that this pitch-based emphasis detection scheme can distinguish between non-emphasized and emphasized utterances with an accuracy of 92% when ambiguous cases are excluded, a rate comparable to human interlabeler agreement.
The Role of Empagliflozin in Cardiac Fibroblast-Mediated Extracellular Matrix Remodeling
Creators: name: Kang, Sean
Publisher: name: Cumming School of Medicine
Year: 2019
Subjects: subject: Fibroblast
subject: Medicine and Surgery

description: Empagliflozin, a sodium-glucose cotransporter-2 (SGLT2) inhibitor, has shown remarkable reductions in cardiovascular mortality and heart failure admissions (EMPA-REG OUTCOME). However, the mechanism underlying the heart failure protective effects of empagliflozin remains largely unknown. Cardiac fibroblasts play an integral role in the progression of structural cardiac remodelling and heart failure, in part, by regulating extracellular matrix (ECM) homeostasis. Thus, in this study we sought to determine if empagliflozin has a direct effect on human cardiac fibroblast-mediated ECM remodelling. Empagliflozin attenuated myofibroblast activation as determined by collagen gel contraction and α-smooth muscle actin (α-SMA) characterization. Examination with confocal microscopy revealed cell morphology indicative of a quiescent phenotype and an attenuation of local ECM remodelling by these fibroblasts in response to empagliflozin. Furthermore, gene expression profiling indicated suppression of critical pro-fibrotic markers by empagliflozin. Taken together, we provide critical insights into the profound clinical benefits of empagliflozin on cardiac failure and mortality.
High impact polypropylene - structure evolution and impact on reaction
Creators: name: Plata Acevedo, Miguel Angel
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2018
Subjects: subject: Polypropylenherstellung
subject: Massepolymerisation
subject: Gasphasenpolymerisation
subject: Homopolymerisation
subject: Copolymerisation
subject: 620

description: Diese Arbeit untersucht die Auswirkungen von Reaktionsbedingungen, insbesondere der Prepo auf die Morphologie und wie diese die Prozesskinetik in der Polymerisation von heterophasischem Polypropylen beeinflussen. Nach Erreichen von Reproduzierbarkeit und Referenzaktivitäten wurde ein Screening über den Einfluss von Polymerisationsbedingungen auf die Morphologie durchgeführt. Die Ergebnisse zeigen, dass Prepo erforderlich ist um gute Aktivitäten zu erhalten. Die Zugabe von Ethylen während der Prepo ist eine Methode zur Einstellung der Morphologie. Dadurch wird die Schüttdichte verringert und die Porosität erhöht. Sorptions-Messungen zeigen für Proben mit geringerer Schüttdichte schnellere Stoffaustauschraten. Die Aktivität während der Homopolymerisation wird durch die Zugabe von Ethylen bei der Prepoly nicht beeinflusst. Kristallinität wird dadurch auch nicht beeinflusst. Während der Copolymerisation zeigten die Proben mit Ethylen in der Prepo geringere Aktivitäten auf. Es gibt Hinweise darauf, dass der Ethyleneinbau in der Copo bei Proben mit Ethylen während der Prepolymerisation etwas höher ist. Simulationsrechnungen zeigen, dass die Proben mit Ethylen in der Prepo die Stofftransportbeschränkungen für Ethylen in der Copo reduzieren. Dadurch kann das Potential des Katalysators für den Ethyleneinbau besser genutzt werden.
description: This work focuses on the effect of reaction conditions, in particular prepolymerization, on the particle morphology and how morphology influences process kinetics in the polymerization of heterophasic polypropylene. After establishing reproducibility and reference activity levels, a screening of the effect of homo and prepolymerization conditions on morphology was performed. Results showed for both catalysts studied, that prepo is required in order to obtain good activity and that addition of ethylene during prepolymerization is an effective handle to adjust the morphology. By addition of ethylene, bulk density of the resulting polymer is reduced and porosity is increased. Sorption measurements reveal for samples with lower bulk density faster mass-transfer rates. Activity in the matrix stage is for both catalysts basically not affected by ethylene in the prepo. Crystallinity of the homopolymers is not affected by ethylene in the prepo step. During the rubber-phase, the samples with ethylene in the prepo showed lower activities. There are indications that ethylene incorporation in the rubber step is higher for samples with ethylene during the prepolymerization. Simulation studies show that samples with ethylene in the prepo reduce the mass-transfer limitations for ethylene in the heco-stage, which helps to better exploit the catalyst capabilities for ethylene incorporation.