cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
2019-JACCimaging-FEMRIstressTesting.pdf
Creators: name: Nguyen, Kim-Lien
name: Shao, Jiaxin
name: Ghodrati, Vahid
name: A. Ajijola, Olujimi
name: Dharmakumar, Rohan
name: Paul Finn, J.
name: Hu, Peng
Publisher: name: Health Research Alliance
Year: 2019
Subjects: classificationCode: 320101
subject: Cardiology (incl. cardiovascular diseases)

description: T1 mapping is a promising technique to indirectly assess myocardial blood volume changes during vasodilator-induced stress, but native T1 reactivity (defined as the percent change in T1 between rest and vasodilator-induced stress) has a small amplitude and narrow dynamic range. Ferumoxytol, as an intravascular magnetic resonance imaging contrast agent has potential to enhance the amplitude and dynamic range of myocardial T1 reactivity. We aim to compare vasodilator-induced variations in native relative to ferumoxytol-enhanced (FE) myocardial T1 reactivity and to assess the FE T1 reactivity in normal, remote, and ischemic myocardium. We found that vasodilator stress testing with FE T1 reactivity shows early promise in swine models of inducible hypoperfusion and is feasible in patients with IHD.
Virtual Amalgamation of Relatively Quasiconvex Subgroups
Creators: name: Martinez-Pedroza, Eduardo
name: Sisto, Alessandro
Publisher: name: arXiv
Year: 2012
Subjects: subject: Geometric Topology (math.GT)
subject: Group Theory (math.GR)
subject: FOS: Mathematics
subject: 20F65, 20F67

description: For relatively hyperbolic groups, we investigate conditions guaranteeing that the subgroup generated by two relatively quasiconvex subgroups $Q_1$ and $Q_2$ is relatively quasiconvex and isomorphic to $Q_1 \ast_{Q_1 \cap Q_2} Q_2$. The main theorem extends results for quasiconvex subgroups of word-hyperbolic groups, and results for discrete subgroups of isometries of hyperbolic spaces.
description: 7 pages, 1 figure
Syntaxonomical revision of the Triseto flavescentis-Polygonion bistortae alliance in the Carpathians
Creators: name: Hegedüšová, Katarína
name: Korzeniak, Joanna
name: Májeková, Jana
name: Stoica, Adrian
name: Coldea, Gheorghe
name: Kuzemko, Anna
name: Budzhak, Vasyl
name: Tokaryuk, Alla
name: Chorney, Illya
name: Škodová, Iveta
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Microbiology
subject: FOS: Biological sciences
subject: Cell Biology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology
subject: 69999 Biological Sciences not elsewhere classified

description: This phytosociological study of the Carpathian species-rich mesophilous mountain hay meadows (Triseto flavescentis-Polygonion bistortae alliance, Molinio-Arrhenatheretea class) presents the first unified large-scale classification system in four countries: Slovakia, Poland, Romania, and Ukraine. The starting dataset contained relevés of the Molinio-Arrhenatheretea, Mulgedio-Aconitetea and Nardetea strictae classes. Numerical classification and semi-supervised classification by K-means method were used for the analyses. An electronic expert system and diagnostic species for grassland vegetation served for identification of a priori groups in K-means method. The final dataset contained 612 relevés. Altitude, climatic data and Ellenberg indicator values were used for ecological differentiation of syntaxa. The main gradients in floristic composition were analysed by Detrended Correspondence Analysis. Finally, the eight well-differentiated associations and one newly described association were determined: Campanulo glomeratae-Geranietum sylvatici, Geranio sylvatici-Trisetetum flavescentis, Crepido mollis-Agrostietum capillaris, Geranio-Alchemilletum crinitae, Alchemillo-Deschampsietum caespitosae, Phyteumo (orbicularis)-Trifolietum pratensis, Astrantio-Trisetetum flavescentis, Trollio altissimi-Knautietum dipsacifoliae and Violo declinatae-Agrostietum capillaris ass. nova. The differences in vegetation diversity of mountain hay meadows between particular countries were confirmed: Alchemillo-Deschampsietum caespitosae occurs in all studied territories, Campanulo glomeratae-Geranietum sylvatici occurs predominantly in Slovakia and the newly described association Violo declinatae-Agrostietum capillaris ass. nova could be found only in Ukraine.
Additional file 1 of The role of dosimetry and biological effects in metastatic castration–resistant prostate cancer (mCRPC) patients treated with 223Ra: first in human study
Creators: name: Sciuto, Rosa
name: Rea, Sandra
name: Ungania, Sara
name: Testa, Antonella
name: Dini, Valentina
name: Tabocchini, Maria Antonella
name: Patrono, Clarice
name: Soriani, Antonella
name: Palma, Valentina
name: Marconi, Raffaella
name: Strigari, Lidia
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Cell Biology
subject: Pharmacology
subject: Biotechnology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Cancer

description: Additional file 1: Fig. S1.
The first ALMA view of IRAS 16293-2422: Direct detection of infall onto source B and high-resolution kinematics of source A
Creators: name: Pineda, Jaime E.
name: Maury, Anaëlle J.
name: Fuller, Gary A.
name: Testi, Leonardo
name: García-Appadoo, Diego
name: Peck, Alison B.
name: Villard, Eric
name: Corder, Stuartt A.
name: van Kempen, Tim A.
name: Turner, Jean L.
name: Tachihara, Kengo
name: Dent, William
Publisher: name: arXiv
Year: 2012
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Aims: We focus on the kinematical properties of a proto-binary to study the infall and rotation of gas towards its two protostellar components. Methods: We present ALMA Science Verification observations with high-spectral resolution of IRAS 16293-2422 at 220.2 GHz. The wealth of molecular lines in this source and the very high spectral resolution offered by ALMA allow us to study the gas kinematics with unprecedented detail. Results: We present the first detection of an inverse P-Cygni profile towards source B in the three brightest lines. The line profiles are fitted with a simple two-layer model to derive an infall rate of 4.5x10^-5 Msun/yr. This infall detection would rule-out the previously suggested possibility that source B is a T Tauri star. A position velocity diagram for source A shows evidence for rotation with an axis close to the line-of-sight.
description: Accepted by A&A Letters. 4 pages, 3 figures, 3 appendices (one for Tables, one for additional figures). This second version includes small language modifications and changes to keep the letter within the 4 page limit
The M.I.G.A. and Its Mission
Creators: name: Terasawa, Yoshio
Publisher: name: Columbia University
Year: 1990
Subjects: Economics
Finance

description: It is my good fortune to be heading a new institution dedicated to the global pursuit of economic and social progress. The Multilateral Investment Guarantee Agency (MIGA) was formally constituted as an affiliate of the World Bank in April 1988. Its basic purpose is to promote the flow of investment resources for productive purposes to developing countries by offering long-term political risk insurance, and by providing advisory and consultative services.
The Complexity of Two-Point Boundary-Value Problems With Piecewise Analytic Data
Creators: name: Werschulz, Arthur G.
Publisher: name: Columbia University
Year: 1993
Subjects: Computer science

description: Previous work on the ϵ-complexity of elliptic boundary-value problems Lu = f assumed that the class F of problem elements f was the unit ball of a Sobolev space. In a recent paper, we considered the case of a model two-point boundary-value problem, with F being a class of analytic functions. In this paper, we ask what happens if F is a class of piecewise analytic functions. We find that the complexity depends strongly on how much a priori information we have about the breakpoints. If the location of the breakpoints is known, then the "-complexity is proportional to lnï¼ˆϵ-1ï¼‰, and there is a finite element p-method (in the sense of Babuska) whose cost is optimal to within a constant factor. If we know neither the location nor the number of breakpoints, then the problem is unsolvable for ϵ less than sqroot(2). If we know only that there are b equal or greater than 2 breakpoints, but we don't know their location, then the ϵ-complexity is proportional to bϵ-1, and a finite element h-method is nearly optimal. . In short, knowing the location of the breakpoints is as good as knowing that the problem elements are analytic, whereas only knowing the number of breakpoints is no better than knowing that the problem elements have a bounded derivative in the L2 sense.
Electron velocity distribution instability in magnetized plasma wakes and artificial electron mass
Creators: name: Hutchinson, I. H.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Space Physics (physics.space-ph)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: The wake behind a large object (such as the moon) moving rapidly through a plasma (such as the solar wind) contains a region of depleted density, into which the plasma expands along the magnetic field, transverse to the flow. It is shown here that (in addition to any ion instability) a bump-on-tail which is unstable appears on the electrons' parallel velocity distribution function because of the convective non-conservation of parallel energy. It arises regardless of any non-thermal features on the external electron velocity distribution. The detailed electron distribution function throughout the wake is calculated by integration along orbits; and the substantial energy level of resulting electron plasma (Langmuir) turbulence is evaluated quasilinearly. It peaks near the wake axis. If the mass of the electrons is artificially enhanced, for example in order to make numerical simulation feasible, then much more unstable electron distributions arise; but these are caused by the unphysical mass ratio.
description: Submitted to Journal of Geophysical Research
title: Epidemien in Niederösterreich
Creators: name: Krapfenbauer, Andreas
Year: 2023

description: Diese Arbeit befasst sich mit epidemischen Krankheiten in Niederösterreich im Zeitraum von 1849 bis 1879. Dazu wird besonders die Cholera in den Städten Gmünd und Laa an der Thaya untersucht und deren besonderen Verbreitungsweg dargestellt. Mit Hilfe einer aggregativen Analyse werden die Datensätze der Kirchenmatrikel analysiert, um die besonderen Faktoren von Einfluss des Alters, Geschlechts und Standes auf die Choleraverbreitung hervorzuheben. Vertiefend dazu werden Tages und medizinische Zeitungen untersucht, die die epidemischen Ereignisse und medizinischen Fortschritte beschreiben. Dadurch werden vier spezifische Choleraepidemien 1849, 1855, 1866, 1873 ersichtlich, die sich durch unterschiedliche Faktoren und Bevölkerungsgruppen auszeichnen. Durch den Vergleich der Bewohnerinnen von Gmünd und Laa wird hervorgehoben, welche Faktoren eine Choleraausbreitung begünstigen und welche überregionalen Einflüsse in den Epidemiejahren eine besondere Rolle spielen. Diese Einflüsse kommen zum Vorschein in den Revolutionen von 1849, im österreichischen-preußischen Krieg von 1866 und der Wiener Weltausstellung von 1873. Weitere spezielle Faktoren für die Mortalitätsraten in dieser Zeit betreffen eine hohe Sterblichkeit von Findlingen aus dem Wiener Findlingshaus, sowie medizinische und sanitäre Neuerungen, die unter anderem durch die internationalen medizinischen Kongresse erreicht wurden.
description: This thesis focuses on epidemical diseases in Lower Austria in the time of 1849 to 1879. For this purpose especially the cholera in the cities of Gmünd and Laa an der Thaya will be analyzed and the path of spread will be shown. With the help of an aggregative analysis the church registers will be studied, this will emphazise the influence of age, sex and social standing on the spread of cholera. Further daily and medical journals will be examined, which describe the evolution of the medical understanding of diseases and cholera at that time. Through this method four different cholera epidemics could be established, 1849, 1855, 1866, 1873. In every year different kind of factors and populations influenced the cholera epidemic. By the comparison of the cities of Gmünd and Laa different factors for the spreading emerged and it lead to a better understanding of nation /continentalwide epidemic influences. These influences come across in the revolution of 1849, the Austrian-Prussian war of 1866 and the world exposition in Vienna in 1873. Further interesting factors for the mortality in this time were high numbers of foundlings children from the foundlingshouse in Vienna, aswell as medical and hygenical modernization efforts by the international medical Congresses.
Additional file 2 of The role of dosimetry and biological effects in metastatic castration–resistant prostate cancer (mCRPC) patients treated with 223Ra: first in human study
Creators: name: Sciuto, Rosa
name: Rea, Sandra
name: Ungania, Sara
name: Testa, Antonella
name: Dini, Valentina
name: Tabocchini, Maria Antonella
name: Patrono, Clarice
name: Soriani, Antonella
name: Palma, Valentina
name: Marconi, Raffaella
name: Strigari, Lidia
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Cell Biology
subject: Pharmacology
subject: Biotechnology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Cancer

description: Additional file 2: Supplementary notes.
Analysis of hematopoiesis from human pluripotent stem cells
Creators: name: Kardel, Melanie Dawn
Publisher: name: University of British Columbia
Year: 2011

description: Human embryonic stem (ES) or induced pluripotent stem (iPS) cells have the potential ability to generate all of the cell types in the body. If their differentiation into relevant cell types of interest can be effectively controlled, they are attractive for developmental studies, disease modelling, drug testing, and advancing regenerative medicine. The generation of hematopoietic cells from human ES/iPS cells has been reported, but is highly variable and often inefficient. My specific objective in this thesis was to more fully characterize the process whereby hematopoietic cells are generated from primitive pluripotent precursors, to understand current limitations, and to design improvements that would increase the yield and reproducibility of hematopoietic cell generation. I first examined the effect of the conditions used to maintain the undifferentiated starting population of ES/iPS cells on their hematopoietic cell differentiation ability. The results showed that the initial maintenance conditions used do have a significant influence on the subsequent number and consistency of hematopoietic cells generated. In addition, I found that this process is separately influenced by optimization of sequentially manipulated (early and late) differentiation steps. Analysis of individual EBs revealed a previously unappreciated heterogeneity of hematopoietic output from single EBs in vitro. Even under the most optimal conditions studied, it was found that the majority of EBs did not generate any hematopoietic colony-forming cells (CFCs). This suggested that only a limited number of the initial ES/iPS cells were contributing to the hematopoietic progenitor cell output under these conditions. To investigate this latter phenomenon further, I developed a lentiviral system to track the subsequent hematopoietic progeny of marked undifferentiated or early differentiating ES/iPS cells. The use of this approach confirmed that few of the starting ES/iPS cells contribute to the hematopoietic output of individual EBs. Together these studies suggest that the genesis of hematopoietic progenitors from pluripotent precursors remains limited by multiple factors. Further studies to characterize cell types intermediate between fully pluripotent cells and those with hematopoietic activity are needed to define more rigorously and optimize the use of this strategy for various medical applications.
Effects of power conservation, wireless coverage and cooperation on data dissemination among mobile devices
Creators: name: Papadopouli, Maria
name: Schulzrinne, Henning G.
Publisher: name: Columbia University
Year: 2001
Subjects: Computer science

description: This paper presents 7DS, a novel peer-to-peer data sharing system. Peers can be either mobile or stationary. 7DS is an architecture, a set of protocols and an implementation enabling the exchange of data among peers that are not necessarily connected to the Internet. It runs as an application complementary to other data access approaches (such as via base stations or info-stations). It anticipates the information needs of users and fulfills them by searching for information among peers. We evaluate via extensive simulations the effectiveness of our system in data dissemination for mobile devices. We model several general data dissemination approaches and investigate the effect of the wireless coverage range,network size, query mechanism, cooperation strategy among the mobile hosts and power conservation with a large number of user mobility scenarios. Using theory from random walks and random environments and diffusion of controlled processes, we model one of these data dissemination schemes and show that the analysis confirms the simulation results for this scheme.
What is the complexity of volume calculation?
Creators: name: Werschulz, Arthur G.
name: Wozniakowski, Henryk
Publisher: name: Columbia University
Year: 2000
Subjects: Computer science

description: We study the worst case complexity of computing ε-approximations of volumes of d-dimensional regions g([0, 1]d ), by sampling the function g. Here, g is an s times continuously differentiable injection from [0, 1]d to R d , where we assume that s ≥ 1. Since the problem can be solved exactly when d = 1, we concentrate our attention on the case d ≥ 2. This problem is a special case of the surface integration problem studied in [12]. Let c be the cost of one function evaluation. The results of [12] might suggest that the ε- complexity of volume calculation should be proportional to c(1/ε) d/s when s ≥ 2. However, using integration by parts to reduce the dimension, we show that if s ≥ 2, then the complexity is proportional to c(1/ε) (d−1)/s . Next, we consider the case s = 1, which is the minimal smoothness for which our volume problem is well-defined. We show that when s = 1, an ε-approximation can be computed with cost proportional to at most c(1/ε) (d−1)d/2 . Since a lower bound proportional to c(1/ε) d−1 holds when s = 1, it follows that the complexity in the minimal smoothness case is proportional to c(1/ε) when d = 2, and that there is a gap between the lower and upper bounds when d ≥ 3.
A Repository for a CARE Environment
Creators: name: Bunter, Toni A.
Publisher: name: Columbia University
Year: 1993
Subjects: Computer science

description: Repositories in CASE hold information about the development process and the structure of developing software. The migration or reuse of CASE repositories for CARE (Computer Aided Re-Engineering) is not adequate for the reengineering process. The main reasons for its inadequacy are the emptiness of such repositories and the nature of the process itself. In the following report we will define a CARE architecture, from the reengineering point of view, and derive a structure of a repository appropriate to the reengineering process.
Computing prime factors with a Josephson phase qubit quantum processor
Creators: name: Lucero, Erik
name: Barends, Rami
name: Chen, Yu
name: Kelly, Julian
name: Mariantoni, Matteo
name: Megrant, Anthony
name: O'Malley, Peter
name: Sank, Daniel
name: Vainsencher, Amit
name: Wenner, James
name: White, Ted
name: Yin, Yi
name: Cleland, Andrew N.
name: Martinis, John M.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: A quantum processor (QuP) can be used to exploit quantum mechanics to find the prime factors of composite numbers[1]. Compiled versions of Shor's algorithm have been demonstrated on ensemble quantum systems[2] and photonic systems[3-5], however this has yet to be shown using solid state quantum bits (qubits). Two advantages of superconducting qubit architectures are the use of conventional microfabrication techniques, which allow straightforward scaling to large numbers of qubits, and a toolkit of circuit elements that can be used to engineer a variety of qubit types and interactions[6, 7]. Using a number of recent qubit control and hardware advances [7-13], here we demonstrate a nine-quantum-element solid-state QuP and show three experiments to highlight its capabilities. We begin by characterizing the device with spectroscopy. Next, we produces coherent interactions between five qubits and verify bi- and tripartite entanglement via quantum state tomography (QST) [8, 12, 14, 15]. In the final experiment, we run a three-qubit compiled version of Shor's algorithm to factor the number 15, and successfully find the prime factors 48% of the time. Improvements in the superconducting qubit coherence times and more complex circuits should provide the resources necessary to factor larger composite numbers and run more intricate quantum algorithms.
description: 5 pages, 3 figures
Qubit Complexity of Continuous Problems
Creators: name: Papageorgiou, Anargyros
name: Traub, Joseph F.
Publisher: name: Columbia University
Year: 2005
Subjects: Computer science

description: The number of qubits used by a quantum algorithm will be a crucial computational resource for the foreseeable future. We show how to obtain the classical query complexity for continuous problems. We then establish a simple formula for a lower bound on the qubit complexity in terms of the classical query complexity.
Additional file 1 of The impact of childhood RSV infection on children's and parents' quality of life: a prospective multicenter study in Spain
Creators: name: Díez-Gandía, Eva
name: Gómez-Álvarez, Carla
name: López-Lacort, Mónica
name: Muñoz-Quiles, Cintia
name: Úbeda-Sansano, Isabel
name: Díez-Domingo, Javier
name: Orrico-Sánchez, Alejandro
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Biotechnology
subject: Science Policy
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: 60506 Virology
subject: FOS: Biological sciences
subject: Computational Biology

description: Additional file 1: Annex S1. Electronic case report form (eCRF). Annex S2. Questionnaire used for the study (english version). Annex S3. Resource consumption—related questions. Annex S4. Questionnaire ratings by dimension. Annex S5. HRQoL scores by age group and dimension. Annex S6. Prices used in the healthcare resource consumption estimations.
Remedies in the WTO: An economic perspective
Creators: name: Bagwell, Kyle
Publisher: name: Columbia University
Year: 2007
Subjects: Economics

description: The WTO dispute settlement system represents a major achievement of the Uruguay Round. By most accounts, this system has worked very well. In the ongoing dispute settlement understanding (DSU) review, WTO Members are considering proposals that might lead to further improvements in the functioning of the dispute settlement system. Many of these proposals concern different kinds of remedies that might be used in response to a violation. An evaluation of proposals for remedy reform requires a perspective as to the purpose of the WTO. In this essay, I describe and then apply the terms-of-trade theory of trade agreements. I argue that this theory offers a coherent interpretation of the purpose and design of the WTO. The theory also offers novel insights with respect to proposed reforms of the WTO remedy system.
Geometrical frustration of an extended Hubbard diamond chain in the quasi-atomic limit
Creators: name: Rojas, Onofre
name: de Souza, S. M.
name: Ananikian, N. S.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We study the geometrical frustration of extended Hubbard model on diamond chain, where vertical lines correspond to the hopping and repulsive Coulomb interaction terms between sites, while the rest of them represent only the Coulomb repulsion one. The phase diagrams at zero temperature show quite curious phases: five types of frustrated states and four types of non-frustrated ones, ordered antiferromagnetically. Although decoration transformation was derived to spin coupling systems, this approach can be applied to electron coupling ones. Thus the extended Hubbard model can be mapped onto another effective extended Hubbard model in atomic limit with additional three and four-body couplings. This effective model is solved exactly through transfer matrix method. In addition, using the exact solution of this model we discuss several thermodynamic properties away from half filled band, such as chemical potential behavior, electronic density, entropy, where we study the geometrical frustration, consequently we investigate the specific heat as well.
description: 11 pages, 11 figures
Asymptotically safe gravity as a scalar-tensor theory and its cosmological implications
Creators: name: Cai, Yi-Fu
name: Easson, Damien A.
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study asymptotically safe gravity with Einstein-Hilbert truncation taking into account the renormalization group running of both gravitational and cosmological constants. We show the classical behavior of the theory is equivalent to a specific class of Jordan-Brans-Dicke theories with vanishing Brans-Dicke parameter, and potential determined by the renormalization group equation. The theory may be reformulated as an $f(R)$ theory. In the simplest cosmological scenario, we find large--field inflationary solutions near the Planck scale where the effective field theory description breaks down. Finally, we discuss the implications of a running gravitational constant to background dynamics via cosmological perturbation theory. We show that compatibility with General Relativity requires contributions from the running gravitational constant to the stress energy tensor to be taken into account in the perturbation analysis.
description: 8 pages, 2 figures, version published on PRD
Dimensional stability of single-site and ziegler-natta ethylene copolymers in rotational molding
Creators: name: Medina, Arturo
Publisher: name: University of Calgary
Year: 2007

description: Bibliography: p. 99-114
description: Rotational molding, also known as rotomolding or rotational casting, is a process for manufacturing hollow seamless articles using polymer in powder form. Experiments were carried out on a bench-scale uniaxial rotational molding machine to evaluate and compare the dimensional stability of single-site and Ziegler-catalyzed ethylene copolymers in rotational molding applications. The experimental trials were conducted to determine the effect of processing conditions on the part's warpage and shrinkage. The rapid cooling of the mold using a water spray resulted in greater warpage. Under such conditions, molded parts made using the single-site resins showed less warpage compared to the Zieglercatalyzed copolymers with otherwise comparable densities. The Ziegler-catalyzed copolymers were characterized by a faster crystallization rate and were shown to generate larger crystallinity gradients through the part thickness during the cooling process. Second to temperature gradients, crystallinity gradients are a leading cause for the development of residual stresses and causing warpage. Differences in the crystallization rates between single-site and Ziegler-catalyzed copolymers were explained based on their intermolecular comonomer distributions. Evaluating the effects of changes in the heating time or the oven temperature on the dimensional stability of molded parts was not as straightforward. The impact of these factors on the evolution of the temperature gradient across the melt as well as on the kinetics of crystallization needs to be evaluated and should account for structural changes in the material molecular structure due to degradation reactions as well as for the evolution of stiffness during the solidification process.
Reproducibility in Information Retrieval
Creators: name: Ferro, Nicola
Publisher: name: Zenodo
Year: 2019
Subjects: reproducibility
information retrieval
evaluation

description: This talk discusses the challenges for reproducible science in the field of Information Retrieval (IR), which has a strong and long-lived experimental tradition.

After a brief introduction on reproducibility in general, we will go into the details of the challenges specific to IR, both organizational and cultural. We will also present the results of a survey conducted with the IR research community about the possibility of introducing badges to validate the "reproducibility level" of published research.
description: {"references": ["Ferro, N., Fuhr, N., and Rauber, A. (2018). Introduction to the Special Issue on Reproducibility in Information Retrieval: Evaluation Campaigns, Collections, and Analyses.  ACM Journal of Data and Information Quality (JDIQ), 10(3):9:1-9:4", "Ferro, N., Fuhr, N., and Rauber, A. (2018). Introduction to the Special Issue on Reproducibility in Information Retrieval: Tools and Infrastructures. ACM Journal of Data and Information Quality (JDIQ), 10(4):14:1-14:4", "Ferro, N. and Kelly, D. (2018). SIGIR Initiative to Implement ACM Artifact Review and Badging. SIGIR Forum, 52(1):4-10", "Ferro, N. (2017). Reproducibility Challenges in Information Retrieval Evaluation. ACM Journal of Data and Information Quality (JDIQ), 8(2):8:1-8:4", "Ferro, N., Fuhr, N., J\u00e4rvelin, K., Kando, N., Lippold, M., and Zobel, J. (2016). Increasing Reproducibility in IR: Findings from the Dagstuhl Seminar on \"Reproducibility of Data-Oriented Experiments in e-Science\". SIGIR Forum, 50(1):68-82."]}
Logical Embeddings for Minimum Congestion Routing in Lightwave Networks
Creators: name: Yener, Bulent
name: Boult, Terrance E.
Publisher: name: Columbia University
Year: 1993
Subjects: Computer science

description: The problem considered in this paper is motivated by the independence between logical and physical topology in Wavelength Division Multiplexing WDM based local and metropolitan lightwave networks. This paper suggests logical embeddings of digraphs into multihop lightwave networks to maximize the throughput under nonuniform traffic conditions. Defining congestion as the maximum flow carried on any link, two perturbation heuristics are presented to find a good logical embedding on which the routing problem is solved with minimum congestion. A constructive proof for a lower bound of the problem is given, and obtaining an optimal solution for integral routing is shown to be NP-Complete. The performance of the heuristics is empirically analyzed on various traffic models. Simulation results show that our heuristics perform on the average from a computed lower bound Since this lower bound is not quite tight we suspect that the actual performance is better In addition we show that 5%-20% performance improvements can be obtained over the previous work.
Do households resort to child labor to cope with income shocks?
Creators: name: Beegle, Kathleen
name: Dehejia, Rajeev H.
name: Gatti, Roberta
Publisher: name: Columbia University
Year: 2002
Subjects: Economics

description: Using four rounds of panel household data from the Kagera region of Tanzania, we show that transitory income shocks - measured by the value of crop lost by farming households - lead to significantly increased child labor. A one standard deviation increase in the shock is associated with a 10% increase in mean child working hours. Moreover, we find that households with collateralizable assets - which we interpret as a proxy for access to credit - are better able to offset the effects of income shocks. This evidence supports the view that credit market imperfections are an important determinant of child labor.
Dynamical simulations of electroweak baryogenesis with fermions
Creators: name: Saffin, Paul M.
name: Tranberg, Anders
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We perform real-time numerical lattice simulations of a one-family version of the Standard Model. We model the quantum fermions using the ensemble method and treat the bosonic scalar and non-abelian gauge fields classically. Our main interest is electroweak baryogenesis, and we test the approach by considering Standard Model baryon number violation through the chiral anomaly, a truly quantum phenomenon. We find that the method correctly reproduces the anomaly, and perform the first dynamical simulations of electroweak baryon number violation including fermions.
description: 21 pages, 7 figures
Computer literacy of final year baccalaureate nursing students
Creators: name: McKee, Tanya
Publisher: name: Nursing
Year: 2007

description: Bibliography: p. 82-86
description: New nurses require computer literacy skills; however, it is unclear what skills they actually have upon graduation. The purpose of this exploratory cross sectional study was to determine the computer literacy of graduating nursing students and to compare these skills to those of already employed nurses (RNs). Study methods included an online survey and skill assessment that identified students' actual computer skills. Eighty-one University of Calgary graduating nursing students participated. Ninety-three percent (n = 75) of students met Calgary Health Region criteria for computer literacy compared to 39% of employed nurses. However, improvement was needed in skills related to Internet, PowerPoint and using E-mail. Self-rated skill was not a good predictor of actual computer skill. Enrolment in an accelerated program, younger age, and longer time using computers were associated with computer literacy (p <.05). Results suggest areas for nursing education curriculum development and for in­ service training by employers.
Solution of Ulam's Problem on Binary Search with Four Lies
Creators: name: Auletta, Vincenzo
name: Negro, Alberto
name: Parlati, Giuseppe
Publisher: name: Columbia University
Year: 1993
Subjects: Computer science

description: In this paper we determine the minimal number of yes-no queries needed to find an unknown integer between 1 and 1000000 if at most four of the answers may be erroneous.
An Approach for Distributed Query Processing in Marvel: Concepts and Implementation
Creators: name: Bunter, Toni A.
Publisher: name: Columbia University
Year: 1993
Subjects: Computer science

description: This work displays an approach for the query processing of Marvel rules upon a distributed Marvel object base. Rules and rest rules run simultaneously on different subenvironments, synchronized by a coordinating subenvironment. Instead of transmitting objects, the showed method transmits images. The concept of lazy calling is introduced.
Strategy and science fiction: Britain and the invasion scares, 1905-1909
Creators: name: McCrae, Meighen Sarah C.
Publisher: name: University of Calgary
Year: 2007

description: Bibliography: p. 133-139
description: This thesis examines the relationship between journalism, 'future war' literature, strategic studies and government defence policy in Britain from 1905 to 1909. It is an analysis of the discourse created by a small group of men, concerned with British national efficiency caused by the challenges Germany posed to Britain's political and economic position in the world. It assesses the similarities in the visions promulgated by strategic publicists and fiction writers and their attempts to raise concerns over national defence with the objective of affecting government policy. It illuminates the blurred line between fact and fiction, through the case studies of The Times military journalist, Charles a Court Repington, and 'future war' writer, William Le Queux by exploring how and why these two men both used a vision of invasion to advocate a larger army.
Additional file 1 of Highly efficient generation of sheep with a defined FecBB mutation via adenine base editing
Creators: name: Zhou, Shiwei
name: Ding, Yige
name: Liu, Jiao
name: Liu, Yao
name: Zhao, Xiaoe
name: Li, Guanwei
name: Zhang, Chenguang
name: Li, Chao
name: Wang, Ying
name: Kalds, Peter
name: Gao, Yawei
name: Zong, Bo
name: Huang, Xiaoyu
name: Huang, Shuhong
name: Yu, Honghao
name: Kou, Qifang
name: Petersen, Bjoern
name: Huang, Xingxu
name: Wang, Xiaolong
name: Ma, Baohua
name: Chen, Yulin
Publisher: name: figshare
Year: 2020
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 1. Table S1. sgRNA of target sites. Table S2. Oligonucleotides for generating transcription of sgRNA expression vectors. Table S3. Primers for genotyping and amplifying Cas9/sgRNA targeted BMPR1B fragment. Table S4. Detailed summary of the lambs generated with ABEmax-mediated base editing. Table S5. Primers for genotyping and amplifying predicted off-target site fragments. Table S6. List of predicted off-target sites.
Micromechanical Model for Self-Organized Impurity Nanorod Arrays in Epitaxial YBCO Films
Creators: name: Shi, Jack J.
name: Wu, Judy Z.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: A micromechanical model based on the theory of elasticity has been developed to study the configuration of self-assembled impurity nanostructures in high temperature superconducting YBCO films. With the calculated equilibrium strain and elastic energy of the impurity doped film, a phase diagram of lattice mismatches $vs.$ elastic constants of the dopant was obtained for the energetically-preferred orientation of impurity nanorods. The calculation of the nanorod orientation and the film lattice deformation has yielded an excellent agreement with experimental measurements.
Spectrum of single-photon emission and scattering in cavity optomechanics
Creators: name: Liao, Jie-Qiao
name: Cheung, H. K.
name: Law, C. K.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We present an analytic solution describing the quantum state of a single photon after interacting with a moving mirror in a cavity. This includes situations when the photon is initially stored in a cavity mode as well as when the photon is injected into the cavity. In addition, we obtain the spectrum of the output photon in the resolved-sideband limit, which reveals spectral features of the single-photon strong-coupling regime in this system. We also clarify the conditions under which the phonon sidebands are visible and the photon-state frequency shift can be resolved.
description: 5 pages, 5 figures
The scalar bi-spectrum during preheating in single field inflationary models
Creators: name: Hazra, Dhiraj Kumar
name: Martin, Jerome
name: Sriramkumar, L.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In single field inflationary models, preheating refers to the phase that immediately follows inflation, but precedes the epoch of reheating. During this phase, the inflaton typically oscillates at the bottom of its potential and gradually transfers its energy to radiation. At the same time, the amplitude of the fields coupled to the inflaton may undergo parametric resonance and, as a consequence, explosive particle production can take place. A priori, these phenomena could lead to an amplification of the super-Hubble scale curvature perturbations which, in turn, would modify the standard inflationary predictions. However, remarkably, it has been shown that, although the Mukhanov-Sasaki variable does undergo narrow parametric instability during preheating, the amplitude of the corresponding super-Hubble curvature perturbations remain constant. Therefore, in single field models, metric preheating does not affect the power spectrum of the large scale perturbations. In this article, we investigate the corresponding effect on the scalar bi-spectrum. Using the Maldacena's formalism, we analytically show that, for modes of cosmological interest, the contributions to the scalar bi-spectrum as the curvature perturbations evolve on super-Hubble scales during preheating is completely negligible. Specifically, we illustrate that, certain terms in the third order action governing the curvature perturbations which may naively be expected to contribute significantly are exactly canceled by other contributions to the bi-spectrum. We corroborate selected analytical results by numerical investigations. We conclude with a brief discussion of the results we have obtained.
description: v1: 15 pages, 4 figures; v2: 15 pages, 4 figures, discussion and references added, to appear in Phys. Rev. D
On the Long-Term Implications of Database Machine Research
Creators: name: Shaw, David Elliot
Publisher: name: Columbia University
Year: 1981
Subjects: Computer science
Information science
Database management--Computer programs
Operating systems (Computers)
Information retrieval

description: It is argued that the long-term import of current research on specialized hardware for database management may extend far beyond what is now considered the immediate province of database management systems. In particular, the potential support which "database machines may provide for very high level mechanisms for the description of information processing tasks is considered and exemplified with an operational system for knowledge-based information retrieval.
Signaling and entry deterrence: A multi-dimensional analysis
Creators: name: Bagwell, Kyle
Publisher: name: Columbia University
Year: 2006
Subjects: Economics

description: This paper considers a long-standing question in the field of Industrial Organization: Can an incumbent firm price and advertise so as to deter entry that otherwise would be profitable? For the most part, the first economists to consider this question give affirmative answers. Braithwaite (1928) and Robinson (1933) offer early informal remarks in support of the view that advertising has an entry-deterrence effect. Bain (1949) provides an early argument that an incumbent may deter entry by limit pricing (i.e., by pricing below the monopoly price), and Williamson (1963) later develops an analogous argument that an incumbent can deter entry by committing to a low price and a high advertising level. Important early empirical contributions by Bain (1956) and Comanor and Wilson (1967, 1974) offer inter-industry evidence that is broadly consistent with the hypothesis that advertising by established firms generates an entry barrier.
Molecular genetic analysis of seed coat mucilage mutants of arabidopsis thaliana
Creators: name: Huang, Jun
Publisher: name: University of British Columbia
Year: 2011

description: During differentiation, the Arabidopsis seed coat epidermal cells produce copious amounts of mucilage that is extruded from the seed coat upon imbibition. Mucilage is composed primarily of pectin, a polysaccharide that is a main component of the cell wall. For this reason, the Arabidopsis seed coat is a good system for studying the biosynthesis, secretion and modification of pectin. Mutants with mucilage defects can be used to identify genes involved in the production of pectin. Mucilage-Modified mutants, including mum1, mum2 and mum4, were identified using screens of EMS mutagenized plants. Both mum1 and mum2 lack the ability to release the mucilage when mature seeds are imbibed. MUM2 encodes a β-galactosidase that modifies the mucilage structure in the apoplast. I have cloned the MUM1 gene and shown it to encode a putative transcription factor LEUNIG_HOMOLOG (LUH). Cellular localization and transcriptional assay results suggest that LUH/MUM1 is a nuclear-localized, transcriptional activator. LUH/MUM1 is expressed in all the tissues examined including the seed coat. qRT PCR data suggest that LUH/MUM1 is expressed throughout seed coat development, reaching peak expression late in differentiation. MUM2 expression in the luh/mum1 mutant was reduced dramatically, relative to that of wild type. Over-expression of MUM2 could partially rescue the mum1 phenotype. These data suggest that LUH/MUM1 is a positive regulator of MUM2. qRT PCR data revealed a similar expression level of LUH/MUM1 in wild type compared to plants homozygous for mutations in several genes encoding regulators of seed coat mucilage, namely APETALA2, TRANSPARENT TESTA GLABRA1 (TTG1), TTG2 and GLABRA2. Thus the LUH/MUM1-MUM2 regulatory pathway appears to be independent of other transcription factors known to regulate aspects of seed coat mucilage biology. Mutations in the MUM4 gene result in seeds that release little mucilage. A mum4 mutant was mutagenized and resulting M2 progeny screened for modifier mutants. Ten enhancers (mum4 enhancer (men)) and ten suppressors (mum4 suppressors (msu)) mutants were isolated and partially characterized genetically and phenotypically. Further studies are needed to characterize these mutants.
Meeting online friends: personal relationships in the 21st century
Creators: name: Luft, Christine
Publisher: name: University of Calgary
Year: 2007

description: Bibliography: p. 92-94
description: There is not yet an extensive body of academic research on how internet friendships move to the realm of face-to-face friendships. This research explores the experiences of people who have met their internet friends in person. It explores how online relationships make the transition to offline relationships, and what the experience of meeting a friend is like for individuals. A grounded theory approach to the phenomenon is used generate rich data from which new ideas concerning internet friendships arise. This thesis explores how individuals engage with a number of discourses surrounding the Internet and internet friendships.
On the Cost of Transitive Closures in Relational Databases
Creators: name: Li, Zhe
name: Ross, Kenneth A.
Publisher: name: Columbia University
Year: 1993
Subjects: Computer science

description: We consider the question of taking transitive closures on top of pure relational systems (Sybase and Ingres in this case). We developed three kinds of transitive closure programs, one using a stored procedure to simulate a built-in transitive closure operator, one using the C language embedded with SQL statements to simulate the iterated execution of the transitive closure operation, and one using Floyd's matrix algorithm to compute the transitive closure of an input graph. By comparing and analyzing the respective performances of their different versions in terms of elapsed time spent on taking the transitive closure, we identify some of the bottlenecks that arise when defining the transitive closure operator on top of existing relational systems. The main purpose of the work is to estimate the costs of taking transitive closures on top of relational systems, isolate the different cost factors (such as logging, network transmission cost, etc.), and identify some necessary enhancements to existing relational systems in order to support transitive closure operation efficiently. We argue that relational databases should be augmented with efficient transitive closure operators if such queries are made frequently.