cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Details of magnetic polarity transitions recorded in a high deposition rate deep-sea core
Creators: name: Opdyke, Neil D.
name: Kent, Dennis V.
name: Lowrie, William
Publisher: name: Columbia University
Year: 1973
Subjects: subject: Oceanography
subject: FOS: Earth and related environmental sciences

description: Measurements of the NRM of a 26 m long deep-sea core from the southern Indian Ocean indicated the presence of three transitions of magnetic polarity which have been identified as the upper and lower Jaramillo and the upper Olduvai on the basis of micropaleontological criteria. Detailed studies of the magnetic reversals were made in view of the high deposition rates (~9 cm/10^3 yr) present over sections of the core. The NRM was found stable against alternating fields. Magnetic mineralogy studies indicated the presence of titanomagnetite and magnetite which probably have not undergone any significant low-temperature oxidation. The three polarity changes had the following features in common: (1) presence of intermediate directions of magnetization; (2) a pronounced drop in the intensity of magnetization; (3) the drop in intensity of magnetization was coincident with the large directional fluctuations. Measurements of saturation isothermal and anhysteretic remanence, and bulk susceptibility, show that the decrease in NRM intensity associated with each polarity change is not due to a low concentration of the magnetic minerals. The best estimate for the duration of a polarity transition is approximately 4600 yr. There is evidence for both eastward and westward drift of the non-dipole field, which appears to be dominant during the polarity transition interval. The data presented here support a model of a reversing field in which the main dipole field decays to a low value and then builds up in the opposite direction.
title: ACT Score Declines: Looking for the Source
Creators: name: Atkin, Thomas Edward
Publisher: name: Utah State University
Year: 1979

description: During the last 15 years there has been a well documented decline in achievement test scores. Declines have been documented on both the American College Testing Program (ACT) and the Scholastic Aptitude Test (SAT). An increased interest in t he score declines and their possible explanations has also taken place in the last 10 years. The explanation for the declines fit under four main headings: (1) problems with the tests, (2) changes in the testing population, (3) changes in society, and (4) changes in the schools. The purpose of this study was to begin with the test itself and check for possible score drift between two forms of the ACT, a 1977 ACT form and a form 5 to 7 years older than that.
The sample population consisted of 242 juniors at Logan High School, Logan, Utah, and 153 juniors at Skyview High School, Smithfield, Utah, during the 1976-77 school year. These samples represent 83% of the Logan High junior population and 50% of the Skyview High junior class. All subjects took the two forms of the ACT mentioned above.
In analyzing the data from the major samples with a two-tailed t test, it was found that there was a significant difference in the two tests. The largest difference was found on the mathematics subtest; the difference being that students scored higher on the older forms, not only on the mathematics subtest, but on the other subtests, also. A two-way analysis of variance with repeated measures was used to check for variance due to sex of subjects and form of test and their interractions. The findings were consistent with those of the t test. It was found that the mathematics scores varied due to the form of the test. The only sex difference was that females' standard scores were higher than males' on the English subtests of both ACT forms.
This study found a significant difference between an older ACT form and a 1977 ACT form as measured by subjects' scores on both. The findings of this research indicate that the test itself may be a partial cause of the current ACT score declines.
Implement : drawn
Creators: name: Edwards, Tim James
Publisher: name: University Of Tasmania
Year: 2023

description: Through the discipline of sculpture, the project explores the nature and purpose of hand tools as a significant technological extension of humans. The exegesis firstly establishes the utilitarian function of the hand tool in its historical context. It is then argued that the possession and use of tools can be perceived as a form of fetishism. The term fetishism in this context describes a certain satisfaction that arises from the look and the handling and use of hand tools. It also refers to the gratification involved in the process of using tools to create or realise a sculptural form. The intent of tool use in manufacturing, domestic activities and artistic creation is to make the 'significant object'. These processes always create a marginalised 'leftover' or residue. The value and significance of different forms of residues as signposts or traces of an interaction is investigated in the context of artistic practice and interpretation, discussed in terms of the work of Long, Cragg and others. In the context of this visual art exploration the residue has come to be seen as the significant result of intentional action. The outcome of this research is realised in a visual art exhibition. In these artworks the notion and form of tool residue has gained its own distinct identity as a concept. As in the exegesis, the visual art element of this project also interprets the historical and fetishist constructs of the hand tool by specifically focusing on the leftover residue from the process of manufacturing. The residue that has influenced the form of the sculptures in this thesis is, by its very nature, free of intentional imagery and as such contains the freedom and gesture of the verb `to draw'. The exhibition Implement; drawn references the idea of how line mediates space and as a consequence the residue has become important as an informing device for moving line or a sculptural body through space.
Daily, seasonal, and annual relationships between air and subsurface temperatures
Creators: name: Smerdon, Jason E.
name: Pollack, Henry N.
name: Cermak, Vladimir
name: Enz, John W.
name: Kresl, Milan
name: Safanda, Jan
name: Wehmiller, John F.
Publisher: name: Columbia University
Year: 2006
Subjects: Paleoclimatology
Earth temperature
Atmosphere
Climatic changes

description: Inversions of borehole temperature profiles that reconstruct past ground surface temperature (GST) changes have been used to estimate historical changes in surface air temperature (SAT). Paleoclimatic interpretations of GST reconstructions are based on the assumption that GST and SAT changes are closely coupled over decades, centuries, and longer. This assumption has been the subject of some debate because of known differences between GST and SAT at timescales of hours, days, seasons, and years. We investigate GST and SAT relationships on daily, seasonal, and annual timescales to identify and characterize the principal meteorological changes that lead to short-term differences between GST and SAT and consider the effects of those differences on coupling between the two temperatures over much longer time periods. We use observational SAT and subsurface data from Fargo, North Dakota; Prague, Czech Republic; Cape Henlopen State Park, Delaware; and Cape Hatteras National Seashore, North Carolina. These records comprise intradaily observations that span parts of one or two decades. We compare subsurface temperature observations to calculations from a conductive subsurface model driven with daily SAT as the surface boundary condition and show that daily differences exist between observed and modeled subsurface temperatures. We also analyze year-to-year spectral decompositions of daily SAT and subsurface temperature time series and show that dissimilarities between mean annual GST and SAT are attributable to differences in annual amplitudes of the two temperature signals. The seasonal partitioning of these amplitude differences varies from year to year and from site to site, responding to variable evapotranspiration and cryogenic effects. Variable year-to-year differences between mean annual GST and SAT are closely estimated using results from a multivariate regression model that associates the partial influences of seasonal meteorological conditions with the attenuation of annual GST amplitudes.
title: Auf dem Weg zu 100 Prozent Open Access
title: Bound for one-hundred percent Open Access
title: Fünf Jahre DFG-geförderter Publikationsfonds und die Entwicklung notwendiger Infrastruktur an der Universität Potsdam
titleType: Subtitle
title: DFG-sponsored publication funding and the development of infrastructure needed at Potsdam University – five years on
titleType: Subtitle
Creators: name: Thomas, Linda
Publisher: name: Universität Potsdam
Year: 2020

description: Die Universität Potsdam verwaltet seit 2015 einen DFG-geförderten Publikationsfonds. In den Publikationsjahren 2015 und 2017 wurden Outputanalysen durchgeführt. Open Access ist seit 2018 ein zentraler Bestandteil des Mittelverteilungsmodells. Der Artikel thematisiert die zentralen Erkenntnisse der letzten fünf Jahre und illustriert die entstandene Infrastruktur. Außerdem werden aktuelle Herausforderungen und mögliche Lösungsansätze der Transformation auf dem Weg hin zu 100 Prozent Open Access thematisiert.
description: Since 2015, the University of Potsdam has been managing a publication fund sponsored by the German Research Foundation. Output analyses were carried out for the publication years 2015 and 2017. Open Access has been a key component of the fund distribution model since 2018. The article discusses key findings of the past five years and explains the infrastructure created for the task. It also discusses current challenges and possible approaches to paving the way for 100 percent Open Access publications.
DNA Damage Signaling is a Biomarker and Target for Therapy in Human Papillomavirus Oropharyngeal Cancer
Creators: name: Bogard, Ryan  D
Publisher: name: University of Illinois at Chicago
Year: 2022
Subjects: Uncategorized

description: Head and neck cancer (HNC) is a common form of cancer seen worldwide. There are estimates of more than 600,000 cases per year. In the US, the prevalence of oral HPV infection has steadily risen. The human papillomavirus has been linked with increasing incidence of oropharyngeal cancer. HPV is known to infect the basal cells of stratified epithelia. HPV accesses this tissue through breaks within the mucosa. The proteins E6 and E7 are high risk associated HPV proteins that bind to p53 and Rb tumor suppressors. This causes the degradation of these proteins which allows for increased cell cycle progression. HPV replication can activate the DNA damage response. HPV can activate the ataxia telangiectasia mutated (ATM) protein. This causes phosphorylation of multiple downstream protein targets such as checkpoint kinase 2 (Chk2). In order for HPV to replicate, ATM activation is required. Double stranded breaks in DNA cause activation of ATM. This may be caused by HPV replication stress. This study demonstrated that ATM activation as well as double strand DNA breaks are significantly correlated with HPV+ oropharyngeal cancers. Due to the importance of ATM activation for proper HPV replication, we hypothesized that the inhibition of the ATM protein may be useful as a drug therapy target for HPV+ oropharyngeal cancers. ATM inhibition was found to increase the amount of double strand DNA breaks at replication foci in HNC cell lines. The inhibition of ATM was found to block the cell cycle progression at G2/M phase. This inhibition also was shown to alter the regulatory protein expression seen with in the cell cycle which causes widespread apoptosis. The study showed that implanted tumors were able to produce HPV virion particles. It also showed that inhibition of ATM prevented further cancer cell growth in vivo. This was due to initiation of apoptosis. The inhibition of the E6 protein resulted in apoptosis and cell cycle inhibition in human HPV+ cancer cell lines. This model is based on double strand DNA break signaling which appears to be an important biomarker of HPV+ head and neck cancer. The goal is to therapeutically inhibit this DNA break signaling in order to improve treatment outcomes in vivo.
The Computational Power of Minkowski Spacetime
Creators: name: Biamonte, Jacob D.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Quantum Physics (quant-ph)
subject: Computational Complexity (cs.CC)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: The Lorentzian length of a timelike curve connecting both endpoints of a classical computation is a function of the path taken through Minkowski spacetime. The associated runtime difference is due to time-dilation: the phenomenon whereby an observer finds that another's physically identical ideal clock has ticked at a different rate than their own clock. Using ideas appearing in the framework of computational complexity theory, time-dilation is quantified as an algorithmic resource by relating relativistic energy to an $n$th order polynomial time reduction at the completion of an observer's journey. These results enable a comparison between the optimal quadratic \emph{Grover speedup} from quantum computing and an $n=2$ speedup using classical computers and relativistic effects. The goal is not to propose a practical model of computation, but to probe the ultimate limits physics places on computation.
description: 6 pages, LaTeX, feedback welcome
ВOЛЕЙБOЛ КAК СРЕДСТВO ФИЗИЧЕСКOГO ВOСПИТAНИЯ СТAРШИХ ШКOЛЬНИКOВ
Creators: name: Рустaмoв, Лaзизбек
name: Мaхмудoв, Шoхжaхoн
Publisher: name: Zenodo
Year: 2023

description: В дaннoй стaтье рaссмaтривaется реaлизaция пoтенциaлa зaнятий вoлейбoлoм в урoчнoй и внеурoчнoй деятельнoсти  сoздaет блaгoприятные услoвия для физическoгo вoспитaния стaрших шкoльникoв.
title: The Use of Symbolic Modeling On Generalized Imitation In Children
Creators: name: Anderson, Emmett G.
Publisher: name: Utah State University
Year: 1979

description: Ten experimentally naive children between the ages of six and eight served in three generalized imitation experiments using symbolic models. Subjects were presented videotaped behaviors to imitate via closed circuit television, and their responses were mechanically defined, recorded, and reinforced in an effort to control social influences from the presence of the experimenter. In Experiment 1, imitation of three behaviors was reinforced and imitation of a fourth behavior was never reinforced for four subjects. Two other subjects received noncontingent reinforcement. The following independent variables were tested: (1) the presence and absence of an experimenter, (2) instructions to "Do that," and (3) contingent and noncontingent reinforcement.
Results of Experiment 1 demonstrated the apparatus could be used to produce and maintain generalized imitation, even in the absence of the experimenter, so long as differential reinforcement was available. ''Do that'' instructions were not necessary, and the presence of the experimenter served to maintain imitation when contingent reinforcement was not available.
In Experiment 2, four subjects produced generalized imitation in the absence of both a n experimenter and any instructions with two reinforced and two nonreinforced imitations.
Using the same four subjects in Experiment 3, congruent, incongruent, and "Do what you want" instructions given before sessions demonstrated that instructions could override the effect of reinforcers or produce differential responding in most subjects. When given a choice to imitate or not imitate, subjects continued generalized imitation.
The data tend to support the theory that imitation is itself a response class, and the effect of instructions is to divide that response class into a class of imitated responses and a class of instruction-following responses. The influence of instructions, even in the absence of an adult experimenter, was obvious.
Neutrino oscillations: deriving the plane-wave approximation in the wave-packet approach
Creators: name: Lychkovskiy, Oleg
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The plane-wave approximation is widely used in the practical calculations concerning neutrino oscillations. A simple derivation of this approximation starting from the neutrino wave-packet framework is presented.
description: Presented at the 36th ITEP Winter School of Physics, session "Particle Physics", February 8-16, 2008, Otradnoe, Russia
Chaitin Ωnumbers and halting problems
Creators: name: Tadaki, Kohtaro
Publisher: name: arXiv
Year: 2009
Subjects: subject: Logic (math.LO)
subject: Computational Complexity (cs.CC)
subject: Information Theory (cs.IT)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences

description: Chaitin [G. J. Chaitin, J. Assoc. Comput. Mach., vol.22, pp.329-340, 1975] introduced Ωnumber as a concrete example of random real. The real Ωis defined as the probability that an optimal computer halts, where the optimal computer is a universal decoding algorithm used to define the notion of program-size complexity. Chaitin showed Ωto be random by discovering the property that the first n bits of the base-two expansion of Ωsolve the halting problem of the optimal computer for all binary inputs of length at most n. In the present paper we investigate this property from various aspects. We consider the relative computational power between the base-two expansion of Ωand the halting problem by imposing the restriction to finite size on both the problems. It is known that the base-two expansion of Ωand the halting problem are Turing equivalent. We thus consider an elaboration of the Turing equivalence in a certain manner.
description: 17 pages, LaTeX2e, no figures. This is an earlier full version of the paper that will appear in the Proceedings of Computability in Europe 2009, Heidelberg, Germany, July 19 - 24, 2009
Gaussian Belief Propagation Solver for Systems of Linear Equations
Creators: name: Shental, Ori
name: Siegel, Paul H.
name: Wolf, Jack K.
name: Bickson, Danny
name: Dolev, Danny
Publisher: name: arXiv
Year: 2008
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences
subject: E.5

description: The canonical problem of solving a system of linear equations arises in numerous contexts in information theory, communication theory, and related fields. In this contribution, we develop a solution based upon Gaussian belief propagation (GaBP) that does not involve direct matrix inversion. The iterative nature of our approach allows for a distributed message-passing implementation of the solution algorithm. We also address some properties of the GaBP solver, including convergence, exactness, its max-product version and relation to classical solution methods. The application example of decorrelation in CDMA is used to demonstrate the faster convergence rate of the proposed solver in comparison to conventional linear-algebraic iterative solution methods.
description: 5 pages, 2 figures, appeared in the 2008 IEEE International Symposium on Information Theory, Toronto, July 2008
Adaptive optimization of discrete stochastic systems
Creators: name: Gracovetsky, Serge Alain
Publisher: name: University of British Columbia
Year: 2011

description: The general theory of stochastic optimal control is based on determining a control which minimizes an expected cost. However, the use of minimum expected cost as a design objective is arbitrary. A direct consequence of this choice is the need for extensive statistical information. If the required statistical data is not available or not accurate, the controller is suboptimum. The thesis begins with the investigation of the conventional method of solution and proposes an interpretation of the solution which introduces a different approach. This approach does not use the expected cost as design objective. The suggested new criterion is based on a trade-off between deterministic optimization and a cost penalty for estimation error. In order to have a basis of comparison with the conventional method, the proposed adaptive stochastic controller is compared with the standard stochastic optimal controller for a linear discrete system associated with linear measurements, additive noise and quadratic cost. The basic feature of the proposed method is the introduction of an adaptive filter gain which enters the proposed cost index algebraically and couples the controller with the estimator. Unlike the conventional Kalman-Bucy filter gain, the proposed gain is a scalar independent of the second and higher order moments of noise distributions. Simulation is carried out on second and fifth order linear systems with gaussian and non gaussian noises distributions. There is a moderate cost increase of 1% to 12%. The method is then extended to nonlinear systems. A general solution of the nonlinear problem is formulated and a complete investigation of the properties of the solution is given for different cases. Stability of the expected tracking error of the filter is guaranteed by introducing bounds on the filter gain. Problems arising from the use of suboptimum structures for the control are examined and discussed. It is shown that for a class of systems the proposed method has a particularly attractive form. As in the linear case, the required statistical information is limited to the expected values of the noises, and the expected value of the initial state of the system. Simulation executed on second order systems indicates a cost decrease of 1% to 20% when compared with the method using an extended Kalman-Bucy filter.
Additional file 3 of Taxonomic status of grey-headed Yellow Wagtails breeding in western China
Creators: name: Hellquist, Alexander
name: Friberg, Fredrik
name: Haldén, Petter
name: Schmidt, Peter
name: Ma, Ming
name: Jun, Gou
name: Olsson, Urban
name: Alström, Per
Publisher: name: figshare
Year: 2021
Subjects: subject: Genetics
subject: FOS: Biological sciences
subject: Evolutionary Biology
subject: Environmental Sciences not elsewhere classified
subject: Ecology
subject: Immunology
subject: FOS: Clinical medicine
subject: Cancer

description: Additional file 3: Table S2. URLs for photos of 39 grey-headed Yellow Wagtails in Xinjiang published online and included in the analysis of plumage. Table S3. URLs for recordings of 25 grey-headed Yellow Wagtails in Xinjiang published online and included in the analysis of vocalisations.
BRST invariance and de Rham-type cohomology of 't Hooft-Polyakov monopole
Creators: name: Hong, Soon-Tae
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We exploit the 't Hooft-Polyakov monopole to define closed algebra of the quantum field operators and the BRST charge $Q_{BRST}$. In the first-class configuration of the Dirac quantization, by including the $Q_{BRST}$-exact gauge fixing term and the Faddeev-Popov ghost term, we find the BRST invariant Hamiltonian to investigate the de Rham-type cohomology group structure for the monopole system. The Bogomol'nyi bound is also discussed in terms of the first-class topological charge defined on the extended internal 2-sphere.
description: 8 pages
Paleomagnetism of the Silurian-Devonian Andreas redbeds: Evidence for an Early Devonian supercontinent?
Creators: name: Miller, John D.
name: Kent, Dennis V.
Publisher: name: Columbia University
Year: 1988
Subjects: subject: Geology
subject: FOS: Earth and related environmental sciences

description: Two components of magnetization were isolated in the Silurian-Devonian Andreas redbeds of the central Appalachians of Pennsylvania (lat 40.75 degrees N, long 75.78 degrees W): a thermally distributed, synfolding B component, and a thermally discrete, pre-Alleghenian-age folding C component. The C component mean direction and associated pole position correspond to a Silurian-Devonian paleolatitude for the Andreas location of about 35 degrees S, which, in conjunction with Early Devonian results from Gondwana, is consistent with an Early Devonian supercontinent configuration.
Paleomagnetism of the Upper Ordovician Juniata Formation of the central Appalachians revisited again
Creators: name: Miller, John D.
name: Kent, Dennis V.
Publisher: name: Columbia University
Year: 1989
Subjects: subject: Geophysics
subject: FOS: Earth and related environmental sciences

description: Two components of magnetization were isolated in the Upper Ordovician Juniata Formation sampled in the area of the Pennsylvania salient. The thermally distributed, reversed polarity B component was most likely acquired during Alleghenian deformation, and although it is poorly grouped, it is similar to other Appalachian synfolding magnetizations. The pre-Alleghenian age C magnetization is entirely of normal polarity and shows a difference in declinations between the mean magnetizations isolated on the northern and southern limbs of the salient of 24° ± 23°. This anomaly is consistent with the sense and magnitude of declination anomalies observed in pre-Alleghenian magnetizations isolated in other throughgoing Appalachian red beds of Silurian, Devonian, and early Carboniferous age. The mean inclination of -44.7° suggests a paleolatitude of about 26°S for the central Appalachians in the Late Ordovician. This paleolatitude fits a trend of southward motion of North America from the Ordovician to the Early Devonian, followed by northward drift through the remainder of the Paleozoic.
title: The Relationship Between Personality as Measured by the Minnesota Multiphasic Personality Inventory and Interest as Measured by the Kuder Preference Record
Creators: name: Knudsen, Robert Glen
Publisher: name: Utah State University
Year: 1965

description: Counselors frequently use batteries of psychological tests in helping students to select appropriate educational and occupational choices. The task of interpreting scores on a battery of tests to students is not at any time a simple undertaking. The trend toward emphasis on the importance of the relationship among the various scores in a battery of tests, has further complicated test interpretation.
Vocational choice theories suggest an interrelationship between vocational interests and personality characteristics. They further suggest that different educational majors and occupations require different types of vocational interest and personality characteristics. Two tests, The Minnesota Multiphasic Personality Inventory (hereafter referred to as the MMPI) and the Kuder Preference Record-Vocational (hereafter referred to as the Kuder), are frequently used to help students make educational and occupational choices.
To help counselors make better interpretations, a number of research studies, using the MMPI and Kuder to determine the relationship of measured interest to measured personality traits have been conducted. The results of these studies have tended to disagree. Some studies have found no significant relationships between the two variables; while others have found significant relationships. There have also been many research studies, using the MMPI and Kuder, to determine personality and interest differences among the different college majors. These studies, too, have disagreed.
Because of these limitations, there appears to be a need for a more systematic and dependable method of establishing relationships among the MMPI and Kuder, and of interpreting the patterns which are formed by those relationships.
Helical magnetorotational instability in a Taylor-Couette flow with strongly reduced Ekman pumping
Creators: name: Stefani, Frank
name: Gerbeth, Gunter
name: Gundrum, Thomas
name: Hollerbach, Rainer
name: Priede, Jānis
name: Rüdiger, Günther
name: Szklarski, Jacek
Publisher: name: arXiv
Year: 2009
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: The magnetorotational instability (MRI) is thought to play a key role in the formation of stars and black holes by sustaining the turbulence in hydrodynamically stable Keplerian accretion discs. In previous experiments the MRI was observed in a liquid metal Taylor-Couette flow at moderate Reynolds numbers by applying a helical magnetic field. The observation of this helical MRI (HMRI) was interfered with a significant Ekman pumping driven by solid end-caps that confined the instability only to a part of the Taylor-Couette cell. This paper describes the observation of the HMRI in an improved Taylor-Couette setup with the Ekman pumping significantly reduced by using split end-caps. The HMRI, which now spreads over the whole height of the cell, appears much sharper and in better agreement with numerical predictions. By analyzing various parameter dependencies we conclude that the observed HMRI represents a self-sustained global instability rather than a noise-sustained convective one.
description: 30 pages, 22 figures, submitted to PRE
Miocene stable isotopic stratigraphy and magnetostratigraphy of Buff Bay, Jamaica
Creators: name: Miller, Kenneth G.
name: Wright, James D.
name: Van Fossen, Mickey C.
name: Kent, Dennis V.
Publisher: name: Columbia University
Year: 1994
Subjects: Geology, Stratigraphic

description: Previously reported biostratigraphic relationships from middle-upper Miocene sections exposed near Buff Bay, Jamaica (18°N, tropical bioprovince), differ from the subtropical North Atlantic (Sites 563 and 558). Time scales for this interval rely on correlations established at these subtropical sites, and the differences with the tropical section have implications to global correlations. Planktonic foraminiferal Zones N13 and N15 are thick at Buff Bay but are virtually absent at Sites 563 and 558; nannofossil Zone NN9 is associated with Zone N15 and uppermost Zone N14 at Buff Bay but is associated with Zone N16 at the other sites. Magnetostratigraphic data presented here further complicate the interpretation: Zone NN9 is associated with a thick normal magnetozone at Sites 563 and 558; at Buff Bay, it is associated with a thick reversed magnetozone. Although a secondary magnetization at Buff Bay makes it difficult to identify confidently Miocene normal magnetozones, the thick reversed magnetozone most likely represents the paleomagnetic field and correlates with Chron C5r. The magnetobiostratigraphic relationships require either diachrony of taxa or two mutually exclusive hiatuses in Jamaica and the North Atlantic. We address this problem by analyzing benthic foraminiferal δ^18O and δ^13C from the Buff Bay section. These isotopic data allow us to evaluate three hypotheses that reconcile the magneto-, bio-, and isotopic stratigraphic data and conclude that the first and last occurrences of five taxa were diachronous by ~0.3-0.5 m.y. between tropical and subtropical locations. This requires revised age estimates for late middle to early late Miocene biostratigraphic datum levels. We suggest that the ranges of several taxa are useful for endemic tropical or subtropical zonations, but correlations between the low and midlatitudes were affected by an increase in latitudinal thermal gradients during the late middle Miocene. However, we admit that further studies are needed before this issue is resolved.
UBVRI observations of the flickering of RS Ophiuchi at Quiescence
Creators: name: Zamanov, R. K.
name: Boeva, S.
name: Bachev, R.
name: Bode, M. F.
name: Dimitrov, D.
name: Stoyanov, K. A.
name: Gomboc, A.
name: Tsvetkova, S. V.
name: Slavcheva-Mihova, L.
name: Spassov, B.
name: Koleva, K.
name: Mihov, B.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We report observations of the flickering variability of the recurrent nova RS Oph at quiescence on the basis of simultaneous observations in 5 bands (UBVRI). RS Oph has flickering source with (U-B)_0=-0.62 \pm 0.07, (B-V)_0=0.15 \pm 0.10, (V-R)_0=0.25 \pm 0.05. We find for the flickering source a temperature T_fl = 9500 \pm 500 K, and luminosity L_fl = 50 - 150 L_sun (using a distance of d=1.6kpc). We also find that on a (U-B) vs (B-V) diagram the flickering of the symbiotic stars differs from that of the cataclysmic variables. The possible source of the flickering is discussed. The data are available upon request from the authors and on the web www.astro.bas.bg/~rz/RSOph.UBVRI.2010.MNRAS.tar.gz.
description: 7 pages, MNRAS (accepted)
The MAJORANA DEMONSTRATOR: An R&D project towards a tonne-scale germanium neutrinoless double-beta decay search
Creators: name: Henning, Reyco
Publisher: name: arXiv
Year: 2009
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: The MAJORANA collaboration is pursuing the development of the so-called MAJORANA DEMONSTRATOR. The DEMONSTRATOR is intended to perform research and development towards a tonne-scale germanium-based experiment to search for the neutrinoless double-beta decay of Ge-76. The DEMONSTRATOR can also perform a competitive direct dark matter search for light WIMPs in the 1-10 GeV/c^2 mass range. It will consist of approximately 60-kg of germanium detectors in an ultra-low background shield located deep underground at the Sanford Underground Laboratory in Lead, SD. The DEMONSTRATOR will also perform background and technology studies, and half of the detector mass will be enriched germanium. This talk will review the motivation, design, technology and status of the DEMONSTRATOR.
description: CIPANP 2009 Conference Proceedings
Additional file 1 of The oldest unvaccinated Covid-19 survivors in South America
Creators: name: de Castro, Mateus V.
name: Silva, Monize V. R.
name: Naslavsky, Michel S.
name: Scliar, Marilia O.
name: Nunes, Kelly
name: Passos-Bueno, Maria Rita
name: Castelli, Erick C.
name: Magawa, Jhosiene Y.
name: Adami, Flávia L.
name: Moretti, Ana I. S.
name: de Oliveira, Vivian L.
name: Boscardin, Silvia B.
name: Cunha-Neto, Edecio
name: Kalil, Jorge
name: Jouanguy, Emmanuelle
name: Bastard, Paul
name: Casanova, Jean-Laurent
name: Quiñones-Vega, Mauricio
name: Sosa-Acosta, Patricia
name: de Guedes, Jéssica S.
name: de Almeida, Natália P.
name: Nogueira, Fábio C. S.
name: Domont, Gilberto B.
name: Santos, Keity S.
name: Zatz, Mayana
Publisher: name: figshare
Year: 2022
Subjects: subject: Immunology
subject: FOS: Clinical medicine

description: Supplementary Material 1
Infinite Hankel Block Matrices, Extremal Problems
Creators: name: Sakhnovich, Lev
Publisher: name: arXiv
Year: 2009
Subjects: subject: Spectral Theory (math.SP)
subject: Optimization and Control (math.OC)
subject: FOS: Mathematics
subject: 15A57, 47B10

description: In this paper we use the matrix analogue of eigenvalue $ρ_{min}^{2}$ to formulate and to solve the extremal Nehary problem. When $ρ_{min}$ is a scalar, our approach coincides with Adamjan-Arov-Krein approach.
On the Profinite Distinguishability of Hyperbolic Dehn Fillings of Finite-Volume 3-Manifolds
Creators: name: Rapoport, Paul Yushin
Publisher: name: University of Illinois at Chicago
Year: 2022
Subjects: Uncategorized

description: We use model theory to study relative profinite rigidity of 3-manifold groups and show that given any residually finite group Γ with finite character variety and single-cusped finite volume hyperbolic 3-manifold M, cofinitely many Dehn fillings M_p/q are profinitely distinguishable from Γ.
The Hubble Effective Potential
Creators: name: Janssen, T. M.
name: Miao, S. P.
name: Prokopec, T.
name: Woodard, R. P.
Publisher: name: arXiv
Year: 2009
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We generalize the effective potential to scalar field configurations which are proportional to the Hubble parameter of a homogeneous and isotropic background geometry. This may be useful in situations for which curvature effects are significant. We evaluate the one loop contribution to the Hubble Effective Potential for a massless scalar with arbitrary conformal and quartic couplings, on a background for which the deceleration parameter is constant. Among other things, we find that inflationary particle production leads to symmetry restoration at late times.
description: 32 pages, 6 figures, version 2 published in JCAP with some typoes corrected and two additional references
title: The Teaching Machine as a Study Aid at the College Level
Creators: name: Cragun, John R.
Publisher: name: Utah State University
Year: 1961

description: One of the most interesting and challenging problems to confront those interested in the learning process in recent years is the entire area of the self-instructional device, or "teaching machine." The idea of the teaching machine is not new, for Pressey (49) in 1926 wrote concerning a device he had developed, and at the same time indicated that he had had such a device in mind for "a number of years." After this introduction by Pressey, the teaching machine movement lay dormant for several years with only an occasional article written that had any direct relationship to this area. This was not to last indefinitely, however, because during the past ten years the interest has gradually been growing to the point that at the present time this movement demands consideration.
It is difficult to identify precisely why this has been the case, but a few reasons might be suggested. The demand on education is greater now than it has ever been before (47, 57): there are more people wanting education, there are more students receiving education, the percentage of school-age persons participating is increasing, and the teacher-pupil ratio is not remaining at a desirable level. To further intensify this problem, much more is being demanded. from education in the general areas of curriculum and desired levels of competence. Since this presents the educational system with the obvious task of keeping abreast of these demands, the educator has been forced to search for more effective and efficient methods of instruction. Glaser (28) in his review suggests that the trend is toward closer cooperation and coordination of effort between "educational psychology" and the "science of learning." The experimentalist and the learning theorist are working more closely together on training and learning problems than they ever have before. A final reason for this increased interest, according to Holland (31), is that in the past the interest has been largely on the device itself, but in recent years this has shifted to focus upon the fact that a person's behavior can be altered in situations outside of the laboratory by the application and utilization of certain psychological principles. These same principles can be incorporated in the teaching machine.
Not only is this movement intriguing, but it presents a great challenge, for there are a great number of problems, first to be identified, and second to be solved. From all indications this interest will not dissipate, but rather will become more universal with widespread implications for the student, the teacher, the administrator, the psychologist, and the parent (4, 18, 47). The implications are not confined to t hose associated with a school setting, for as Skinner (57) indicates there is additional application in home study, industrial training, military training, and special education of the exceptional individual. No doubt there are others but this will serve to illustrate the potentially wide-spread effects.
Stationary models for the extra-planar gas in disc galaxies
Creators: name: Marinacci, F.
name: Fraternali, F.
name: Ciotti, L.
name: Nipoti, C.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The kinematics of the extra-planar neutral and ionised gas in disc galaxies shows a systematic decline of the rotational velocity with height from the plane (vertical gradient). This feature is not expected for a barotropic gas, whilst it is well reproduced by baroclinic fluid homogeneous models. The problem with the latter is that they require gas temperatures (above $10^5$ K) much higher than the temperatures of the cold and warm components of the extra-planar gas layer. In this paper, we attempt to overcome this problem by describing the extra-planar gas as a system of gas clouds obeying the Jeans equations. In particular, we consider models having the observed extra-planar gas distribution and gravitational potential of the disc galaxy NGC 891: for each model we construct pseudo-data cubes and we compare them with the HI data cube of NGC 891. In all cases the rotational velocity gradients are in qualitative agreement with the observations, but the synthetic and the observed data cubes of NGC 891 show systematic differences that cannot be accommodated by any of the explored models. We conclude that the extra-planar gas in disc galaxies cannot be satisfactorily described by a stationary Jeans-like system of gas clouds.
description: 14 pages, 7 figures, accepted for pubblication in MNRAS
Magnetostratigraphy and biostratigraphy of the Carnian/Norian boundary interval from the Pizzo Mondello section (Sicani Mountains, Sicily)
Creators: name: Muttoni, Giovanni
name: Kent, Dennis V.
name: Di Stefano, P.
name: Gullo, M.
name: Nicora, Alda
name: Tait, J.
name: Lowrie, William
Publisher: name: Columbia University
Year: 2001
Subjects: Geology, Stratigraphic

description: The 146.5 m-thick Upper Triassic limestone section at Pizzo Mondello in the Sicani Mountains of western Sicily is characterized by high quality of exposure, accessibility, and stratigraphic continuity. Magnetostratigraphic results delineate 12 normal and reverse polarity magnetozones, labelled successively from the base upwards as PM1n, PM1r, PM6n, PM6r. The Carnian/Norian boundary, based on conodont biostratigraphy, falls somewhere in the PM3n to PM5n interval which corresponds to the E14n to E16n magnetozone interval in the Newark reference sequence of polarity reversals. Comparison of magnetobiostratigraphic data from the Newark basin, Pizzo Mondello and other Late Triassic marine sections available from the literature suggests the existence of a reduction in sedimentation rate in the Tethyan marine domain at around the Carnian/Norian boundary. Although the Newark and the expanded Pizzo Mondello sections correlate well with each other, correlation with the condensed Kavur Tepe and Scheiblkogel sections is unsatisfactory. A re-interpretation of the Kavur Tepe results suggests that the section is younger than its previous correlation with the Newark section, and that it was deposited in the northern instead of the southern hemisphere. Most of the condensed Tethyan marine sections are seen to be highly discontinuous, as evidenced by concantenated conodont total range zones.
Validity of Equation-of-Motion Approach to Kondo Problem in the Large-$N$ limit
Creators: name: Qi, Yunong
name: Zhu, Jian-Xin
name: Ting, C. S.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The Anderson impurity model for Kondo problem is investigated for arbitrary orbit-spin degeneracy $N$ of the magnetic impurity by the equation of motion method (EOM). By employing a new decoupling scheme, a set self-consistent equations for the one-particle Green function are derived and numerically solved in the large-$N$ approximation. For the particle-hole symmetric Anderson model with finite Coulomb interaction $U$, we show that the Kondo resonance at the impurity site exists for all $N \geq 2$. The approach removes the pathology in the standard EOM for N=2, and has the same level of applicability as non-crossing approximation. For N=2, an exchange field splits the Kondo resonance into only two peaks, consist with the result from more rigorous numerical renormalization group (NRG) method. The temperature dependence of the Kondo resonance peak is also discussed.
description: 4 pages, 2 eps figures
Towards a better definition of the Middle Triassic magnetostratigraphy and biostratigraphy in the Tethyan realm
Creators: name: Muttoni, Giovanni
name: Kent, Dennis V.
name: Meco, Selam
name: Balini, Marco
name: Nicora, Alda
name: Rettori, Roberto
name: Gaetani, Maurizio
name: Krystyn, Leopold
Publisher: name: Columbia University
Year: 1998
Subjects: subject: Geophysics
subject: FOS: Earth and related environmental sciences

description: Magnetostratigraphic and biostratigraphic data for the Middle Triassic (Anisian) were obtained from the Han-Bulog facies in the Nderlysaj section from the Albanian Alps and the Dont and Bivera formations in the Dont–Monte Rite composite section from the Dolomites region of northern Italy. The Nderlysaj section is biochronologically bracketed between the late Bithynian and early Illyrian substages (i.e., late-early and early-late Anisian), whereas the Dont–Monte Rite section comprises the late Pelsonian and the early Illyrian substages. The data from Nderlysaj and Dont–Monte Rite, in conjunction with already published data, allow us to construct a nearly complete composite geomagnetic polarity sequence tied to Tethyan ammonoid and conodont biostratigraphy from the late Olenekian (late-Early Triassic) to the late Ladinian (late-Middle Triassic). New conodont data require revision of the published age of the Vlichos section (Greece).
Sensitive detection of photoexcited carriers by resonant tunneling through a single quantum dot
Creators: name: Vdovin, E. E.
name: Makarovsky, O.
name: Patane, A.
name: Eaves, L.
name: Khanin, Yu. N.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We show that the resonant tunnel current through a single energy level of an individual quantum dot within an ensemble of dots is strongly sensitive to photoexcited holes that become bound in the close vicinity of the dot. The presence of these holes lowers the electrostatic energy of the quantum dot state and switches the current carrying channel from fully open to fully closed with a high on/off ratio (> 50). The device can be reset by means of a bias voltage pulse. These properties are of interest for charge sensitive photon counting devices.
description: 5 pages, 4 figures
Subglacial sediments: A regional geological template for ice flow in West Antarctica
Creators: name: Studinger, Michael
name: Bell, Robin E.
name: Blankenship, Donald D.
name: Finn, Carol A.
name: Arko, Robert A.
name: Morse, David L.
name: Joughin, Ian
Publisher: name: Columbia University
Year: 2001
Subjects: subject: Hydrology
subject: Submarine geology
subject: Geophysics
subject: FOS: Earth and related environmental sciences

description: We use aerogeophysical data to estimate the distribution of marine subglacial sediments and fault“bounded sedimentary basins beneath the West Antarctic Ice Sheet (WAIS). We find that significant ice flow occurs exclusively in regions covered by subglacial sediments. The onsets and lateral margins of ice streams coincide with the limit of marine sediments. Lateral margins are also consistently linked with fault“bounded basins. We predict that the inland migration of ice streams B and C 1 towards the ice divide outside the region covered by marine or rift sediments is unlikely. The subglacial geology has the potential to modulate the dynamic evolution of the ice streams and the WAIS.