cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Yield and Solidification of Yield-Stress Materials in Rigid Networks and Porous Structures
Creators: name: Sochi, Taha
Publisher: name: figshare
Year: 2014
Subjects: Applied Physics
Mechanics

description: In this paper, we address the issue of threshold yield pressure of yield-stress materials in rigid networks of interconnected conduits and porous structures subject to a pressure gradient. We compare the results as obtained dynamically from solving the pressure field to those obtained statically from tracing the path of the minimum sum of threshold yield pressures of the individual conduits by using the threshold path algorithms. We refute criticisms directed recently to our previous findings that the pressure field solution generally produces a higher threshold yield pressure than the one obtained by the threshold path algorithms. Issues related to the solidification of yield stress materials in their transition from fluid phase to solid state have also been investigated and assessed as part of the investigation of the yield point.
The Yield Condition in the Mobilization of Yield-Stress Materials in Distensible Tubes
Creators: name: Sochi, Taha
Publisher: name: figshare
Year: 2014
Subjects: Applied Physics

description: In this paper we investigate the yield condition in the mobilization of yield-stress materials in distensible tubes. We discuss the two possibilities for modeling the yield-stress materials prior to yield: solid-like materials and highly-viscous fluids and identify the logical consequences of these two approaches on the yield condition. As part of this investigation we derive an analytical expression for the pressure field inside a distensible tube with a Newtonian flow using a one-dimensional Navier-Stokes flow model in conjunction with a pressure-area constitutive relation based on elastic tube wall characteristics.
The continuum emission spectrum of Hf 2-2 near the Balmer limit and the ORL versus CEL abundance and temperature discrepancy
Creators: name: Sochi, Taha
Publisher: name: figshare
Year: 2014
Subjects: subject: Computational Physics
subject: Atomic Physics
subject: Interstellar and Intergalactic Matter
subject: 20104 Galactic Astronomy
subject: FOS: Physical sciences
subject: Cosmology
subject: Astrophysics
subject: Planetary Science
subject: Extragalactic Astronomy

description: The continuum spectrum of the planetary nebula Hf 2-2 close to the Balmer discontinuity is modelled in the context of the long-standing problem of the abundance and temperature discrepancy found when analysing optical recombination lines and collisionally excited forbidden lines in nebulae. Models are constructed using single and double Maxwell–Boltzmann distributions as well as κ-distributions for the energies of the free electrons. New results for the necessary continuum and line emission coefficients are presented calculated with κ-distributed energies. The best fit to the observed continuum spectrum is found to be a model comprising two components with dramatically different temperatures and with a Maxwell–Boltzmann distribution of electron energies. On the basis of a χ2 analysis, this model is strongly favoured over a model with κ-distributed electron energies.
Collision strengths for nebular [O III] optical and infrared lines
Creators: name: Sochi, Taha
Publisher: name: figshare
Year: 2014
Subjects: subject: Interstellar and Intergalactic Matter
subject: Astrophysics
subject: Planetary Science
subject: 20104 Galactic Astronomy
subject: FOS: Physical sciences
subject: Atomic Physics

description: We present electron collision strengths and their thermally averaged values for the nebular forbidden lines of the astronomically abundant doubly ionized oxygen ion, O2+, in an intermediate coupling scheme using the Breit–Pauli relativistic terms as implemented in an R-matrix atomic scattering code. We use several atomic targets for the R-matrix scattering calculations including one with 72 atomic terms. We also compare with new results obtained using the intermediate coupling frame transformation method. We find spectroscopically significant differences against a recent Breit-Pauli calculation for the excitation of the [O III] λ4363 transition but confirm the results of earlier calculations.
Additional file 2 of Longitudinal changes in device-measured physical activity from childhood to young adulthood: the PANCS follow-up study
Creators: name: Husøy, Anders
name: Kolle, E.
name: Steene-Johannessen, J.
name: Dalene, K.E.
name: Andersen, L. B.
name: Ekelund, U.
name: Anderssen, S. A.
Publisher: name: figshare
Year: 2024
Subjects: subject: Medicine
subject: Physiology
subject: FOS: Biological sciences
subject: Environmental Sciences not elsewhere classified
subject: Science Policy
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Mental Health

description: Supplementary Material 2
Multi-Scale Parameterisation of a Myocardial Perfusion Model Using Whole-Organ Arterial Networks
Creators: name: Sochi, Taha
Publisher: name: figshare
Year: 2014
Subjects: Hematology
Computational Biology
Biological Engineering
Biological Techniques
Cardiology
Anatomy

description: A method to extract myocardial coronary permeabilities appropriate to parameterise a continuum porous perfusion model using the underlying anatomical vascular network is developed. Canine and porcine whole-heart discrete arterial models were extracted from high-resolution cryomicrotome vessel image stacks. Five parameterisation methods were considered that are primarily distinguished by the level of anatomical data used in the definition of the permeability and pressure-coupling fields. Continuum multicompartment porous perfusion model pressure results derived using these parameterisation methods were compared quantitatively via a root-mean-square metric to the Poiseuille pressure solved on the discrete arterial vasculature. The use of anatomical detail to parameterise the porous medium significantly improved the continuum pressure results. The majority of this improvement was attributed to the use of anatomically-derived pressure-coupling fields. It was found that the best results were most reliably obtained by using porosity-scaled isotropic permeabilities and anatomically- derived pressure-coupling fields. This paper presents the first continuum perfusion model where all parameters were derived from the underlying anatomical vascular network.
Additional file 3 of Longitudinal changes in device-measured physical activity from childhood to young adulthood: the PANCS follow-up study
Creators: name: Husøy, Anders
name: Kolle, E.
name: Steene-Johannessen, J.
name: Dalene, K.E.
name: Andersen, L. B.
name: Ekelund, U.
name: Anderssen, S. A.
Publisher: name: figshare
Year: 2024
Subjects: subject: Medicine
subject: Physiology
subject: FOS: Biological sciences
subject: Environmental Sciences not elsewhere classified
subject: Science Policy
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Mental Health

description: Supplementary Material 3
Using the Euler-Lagrange variational principle to obtain flow relations for generalized Newtonian fluids
Creators: name: Sochi, Taha
Publisher: name: figshare
Year: 2014
Subjects: Applied Physics

description: The Euler–Lagrange variational principle is used to obtain analytical and numerical flow relations in cylindrical tubes. The method is based on minimizing the total stress in the flow duct using the fluid constitutive relation between stress and rate of strain. Newtonian and non-Newtonian fluid models, which include power law, Bingham, Herschel– Bulkley, Carreau, and Cross, are used for demonstration.
Recognition and Exploitation of Gate Structure in SAT Solving
Creators: name: Iser, Markus
Publisher: name: Karlsruhe
Year: 2020
Subjects: SAT Solving
Propositional Logic
Structure
Algorithms
NP Completeness

description: In der theoretischen Informatik ist das SAT-Problem der archetypische Vertreter der Klasse der NP-vollständigen Probleme, weshalb effizientes SAT-Solving im Allgemeinen als unmöglich angesehen wird. Dennoch erzielt man in der Praxis oft erstaunliche Resultate, wo einige Anwendungen Probleme mit Millionen von Variablen erzeugen, die von neueren SAT-Solvern in angemessener Zeit gelöst werden können. Der Erfolg von SAT-Solving in der Praxis ist auf aktuelle Implementierungen des Conflict Driven Clause-Learning (CDCL) Algorithmus zurückzuführen, dessen Leistungsfähigkeit weitgehend von den verwendeten Heuristiken abhängt, welche implizit die Struktur der in der industriellen Praxis erzeugten Instanzen ausnutzen. In dieser Arbeit stellen wir einen neuen generischen Algorithmus zur effizienten Erkennung der Gate-Struktur in CNF-Encodings von SAT Instanzen vor, und außerdem drei Ansätze, in denen wir diese Struktur explizit ausnutzen. Unsere Beiträge umfassen auch die Implementierung dieser Ansätze in unserem SAT-Solver Candy und die Entwicklung eines Werkzeugs für die verteilte Verwaltung von Benchmark-Instanzen und deren Attribute, der Global Benchmark Database (GBD).
title: Les effets du travail coopératif en dyade sur les mécanismes de comparaison sociale
title: Les effets du travail coopératif en dyade sur les mécanismes de comparaison sociale
titleType: AlternativeTitle
Creators: name: Lengrand, Leslie
name: Rol, Alexia
Publisher: name: Unknown
Year: 0
Subjects: subject: comparaison sociale
subject: pédagogie coopérative
subject: identification descendante
subject: différenciation ascendante
subject: élèves
subject: cibles de comparaison

description: La comparaison sociale est un phénomène irrépressible et commun à tous les individus: elle prend naissance dans le fait que l’individu cherche constamment ses ressemblances ou différences avec la cible de comparaison qu’il choisit. Il existe 4 mécanismes qui découlent de cette théorie selon que l’élève choisisse une cible ascendante ou descendante (jugée meilleure ou moins bonne que lui) à laquelle il s’identifie ou de laquelle il se différencie (se trouve semblable ou différent): l’identification ascendante, la différenciation ascendante, l’identification descendante et la différenciation descendante. La classe est un environnement où les élèves sont régulièrement évalués, ce qui va favoriser la comparaison sociale chez les élèves, surtout dans un climat compétitif. Ces comparaisons peuvent entraîner des réponses défavorables chez certains élèves, lorsqu’ils utilisent des mécanismes d’identification descendante et de différenciation ascendante. L’objectif de notre recherche est alors d’observer si le travail coopératif, qui met les élèves en interdépendance, leur permet de diminuer l’utilisation des mécanismes néfastes pour eux. Notre expérimentation porte sur 36 élèves et consiste à mesurer la comparaison sociale chez des élèves quelques semaines avant de leur faire effectuer une tâche coopérative puis immédiatement après l’avoir terminée (par le biais du même questionnaire). Nos résultats ne valident pas notre hypothèse, toutefois, nous observons une diminution de l’utilisation du mécanisme d’identification descendante, bien que celle-ci ne soit pas significative. En revanche, il existe une corrélation positive entre l’identification descendante et la différenciation ascendante. Nous observons également que les élèves qui ont travaillé en binôme utilisent davantage l’identification ascendante après avoir effectué la tâche coopérative, ce qui peut les conduire à améliorer leurs compétences. Il aurait été intéressant de répéter ces tâches coopératives et les mesures de comparaison sociale pour observer s’il existait un effet sur le plus long terme dû à l'entraînement de ce type de tâches.
Additional file 4 of Longitudinal changes in device-measured physical activity from childhood to young adulthood: the PANCS follow-up study
Creators: name: Husøy, Anders
name: Kolle, E.
name: Steene-Johannessen, J.
name: Dalene, K.E.
name: Andersen, L. B.
name: Ekelund, U.
name: Anderssen, S. A.
Publisher: name: figshare
Year: 2024
Subjects: subject: Medicine
subject: Physiology
subject: FOS: Biological sciences
subject: Environmental Sciences not elsewhere classified
subject: Science Policy
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Mental Health

description: Supplementary Material 4
Electron temperatures and free-electron energy distributions of nebulae from C II dielectronic recombination lines
Creators: name: Sochi, Taha
Publisher: name: figshare
Year: 2014
Subjects: Astrophysics
Atomic Physics
Stellar Astronomy

description: A recently generated theoretical line list of C II dielectronic recombination lines together with observational data gathered from the literature is used to investigate the electron temperature in a range of astronomical objects, mainly planetary nebulae. The electron temperature is obtained by a least-squares optimization using all the reliable observed lines in each object. In addition, the subset of lines arising directly from autoionizing states is used to directly determine the free electron energy distribution which is then compared with various theoretical possibilities. The method described here can potentially determine whether there are departures from Maxwell– Boltzmann distributions in some nebulae, as has been recently proposed. Using published observations of the three planetary nebulae where the relevant lines are recorded, we find that the data are best matched by Maxwell–Boltzmann distributions but that the uncertainties are sufficiently large at present that κ-distributions or two-component nebular models are not excluded.
Newtonian Flow in Converging-Diverging Capillaries
Creators: name: Sochi, Taha
Publisher: name: figshare
Year: 2014
Subjects: Applied Physics

description: The one-dimensional Navier-Stokes equations are used to derive analytical expressions for the relation between pressure and volumetric flow rate in capillaries of five different converging-diverging axisymmetric geometries for Newtonian fluids. The results are compared to previously derived expressions for the same geometries using the lubrication approximation. The results of the one-dimensional Navier-Stokes are identical to those obtained from the lubrication approximation within a nondimensional numerical factor. The derived flow expressions have also been validated by comparison to numerical solutions obtained from discretization with numerical integration. Moreover, they have been certified by testing the convergence of solutions as the converging-diverging geometries approach the limiting straight geometry.
Sensitive Data Interest Group Road Map, 2022
Creators: name: Spreadborough, K
name: Michalewicz, A
name: Burton, N
name: Kristan, K
name: Zhou, B
name: Sensitive Data Interest Group Co-Chairs
name: Sensitive Data Interest Group Community
Publisher: name: Zenodo
Year: 2022

description: This Roadmap has been written for an RDA specific audience. It is intended to state the 2022 aim of the Sensitive Data IG for its group members, and to provide a summary of activities for future members/the wider RDA community. For more information on the Sensitive Data Interest Group, please visit our page here: https://www.rd-alliance.org/groups/sensitive-data-interest-group
New program with new approach for spectral data analysis
Creators: name: Sochi, Taha
Publisher: name: figshare
Year: 2014
Subjects: Crystallography
Computational Physics

description: This article presents a high-throughput computer program, called EasyDD, for batch processing, analyzing and visualizing of spectral data; particularly those related to the new generation of synchrotron detectors and X-ray powder diffraction applications. This computing tool is designed for the treatment of large volumes of data in reasonable time with affordable computational resources. A case study in which this program was used to process and analyze powder diffraction data obtained from the ESRF synchrotron on an alumina- based nickel nanoparticle catalysis system is also presented for demonstration. The development of this computing tool, with the associated protocols, is inspired by a novel approach in spectral data analysis.
Methods for analyzing resonances in atomic scattering
Creators: name: Sochi, Taha
Publisher: name: figshare
Year: 2014
Subjects: Astrophysics
Atomic Physics
Stellar Astronomy

description: Resonances, which are also described as autoionizing or quasi-bound states, play an important role in the scattering of atoms and ions with electrons. The current article is an overview of the main methods, including a recently proposed one, that are used to find and analyze resonances.
A computationally efficient framework for the simulation of cardiac perfusion using a multi-compartment Darcy porous-media flow model
Creators: name: Sochi, Taha
Publisher: name: figshare
Year: 2014
Subjects: Computational Biology
Cardiology
Biological Engineering
Anatomy
Hematology

description: We present a method to efficiently simulate coronary perfusion in subject-specific models of the heart within clinically relevant time frames. Perfusion is modelled as a Darcy porous-media flow, where the permeability tensor is derived from homogenization of an explicit anatomical representation of the vasculature. To account for the disparity in length scales present in the vascular network, in this study, this approach is further refined through the implementation of a multi-compartment medium where each compartment encapsulates the spatial scales in a certain range by using an effective permeability tensor. Neighbouring compartments then communicate through distributed sources and sinks, acting as volume fluxes. Although elegant from a modelling perspective, the full multi-compartment Darcy system is computationally expensive to solve. We therefore enhance computational efficiency of this model by reducing the N-compartment system of Darcy equations to N pressure equations, and N subsequent projection problems to recover the Darcy velocity. The resulting ‘reduced’ Darcy formulation leads to a dramatic reduction in algebraic-system size and is therefore computationally cheaper to solve than the full multi-compartment Darcy system. A comparison of the reduced and the full formulation in terms of solution time and memory usage clearly highlights the superior performance of the reduced formulation. Moreover, the implementation of flux and, specifically, impermeable boundary conditions on arbitrarily curved boundaries such as epicardium and endocardium is straightforward in contrast to the full Darcy formulation. Finally, to demonstrate the applicability of our methodology to a personalized model and its solvability in clinically relevant time frames, we simulate perfusion in a subject-specific model of the left ventricle.
Dielectronic recombination lines of C+
Creators: name: Sochi, Taha
Publisher: name: figshare
Year: 2014
Subjects: Atomic Physics

description: The present paper presents atomic data generated to investigate the recombination lines of C ii in the spectra of planetary nebulae. These data include energies of bound and autoionizing states, oscillator strengths and radiative transition probabilities, autoionization probabilities, and recombination coefficients. The R-matrix method of electron scattering theory was used to describe the C2+ plus electron system.
The Regulatory Network of Pseudomonas aeruginosa
Creators: name: Galán-Vásquez, Edgardo
name: Luna, Beatriz
name: Martínez-Antonio, Agustino
Publisher: name: figshare
Year: 2014
Subjects: subject: 60114 Systems Biology
subject: FOS: Biological sciences
subject: Computational Biology
subject: Microbiology
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Here we report for the first time the compend of gene regulatory network of Pseudomonas aeruginosa. The regulatory network consists of 690 genes and 1020 regulatory interactions between their products (12% of total genes: 54% sigma and 16% of transcription factors). This complex interplay makes the third largest regulatory network of those reported in bacteria. The entire network is enriched for activating interactions and, peculiarly, self-activation seems to occur more prominent for transcription factors (TFs), which contrasts with other biological networks where self-repression is dominant. The network contains a giant component of 650 genes organized into 11 hierarchies, encompassing important biological processes, such as, biofilms formation, production of exopolysaccharide alginate and several virulence factors, and of the so-called quorum sensing regulons.
Dynamical Modeling of the Cell Cycle and Cell Fate Emergence in Caulobacter crescentus
Creators: name: Quiñones-Valles, César
name: Sánchez-Osorio, Ismael
name: Martínez-Antonio, Agustino
Publisher: name: figshare
Year: 2014
Subjects: subject: 60114 Systems Biology
subject: FOS: Biological sciences
subject: Computational Biology
subject: Biological Engineering
subject: Microbiology

description: The division of Caulobacter crescentus, a model organism for studying cell cycle and differentiation in bacteria, generates two cell types: swarmer and stalked. To complete its cycle, C. crescentus must first differentiate from the swarmer to the stalked phenotype. An important regulator involved in this process is CtrA, which operates in a gene regulatory network and coordinates many of the interactions associated to the generation of cellular asymmetry. Gaining insight into how such a differentiation phenomenon arises and how network components interact to bring about cellular behavior and function demands mathematical models and simulations. In this work, we present a dynamical model based on a generalization of the Boolean abstraction of gene expression for a minimal network controlling the cell cycle and asymmetric cell division in C. crescentus.
Structural comparison of biological networks based on dominant vertices
Creators: name: Galán-Vásquez, Edgardo
name: Luna, Beatriz
name: Ugalde, Edgardo
name: Martínez-Antonio, Agustino
Publisher: name: figshare
Year: 2014
Subjects: subject: 60114 Systems Biology
subject: FOS: Biological sciences
subject: Computational Biology
subject: Biological Engineering
subject: Microbiology

description: It is the aim of the present paper to introduce a mathematical tool to compare networks not only with regard to their topological structure, but also in their dynamical capabilities. For this reason we aim to propose a pseudo-distance between networks, built around the notions of determination and dominancy, concepts recently introduced in the context of regulatory dynamics on networks. We use our proposed pseudo-distance to compare networks from the following bacteria: E. coli, B. subtilis, P. aeruginosa, M. tuberculosis, S. aureus and C. glutamicum. We also use this pseudo-distance to compare these real bacterial networks with equivalent homogeneous, scale-free and geometric three dimensional random networks. We found that even when bacterial networks are characterized with different levels of detail, have different sizes and represent different aspects of the organisms, the proposed pseudo-distance captures all these characteristics, and indicates how similar they are or not from random networks.
The role of arginine and tryptophan metabolism in sepsis
Creators: name: Darcy, Christabelle Jean
Publisher: name: Charles Darwin University
Year: 2010

description: A better understanding of the pathophysiology of sepsis is required to improve current treatments. The bioavailability of two amino acids, arginine and tryptophan, can help regulate both microvascular and immune function. The aim of this thesis was to investigate the role of inflammation and amino acid bioavailability in the pathophysiology of sepsis. The methodology presented in this thesis shows that HPLC is an effective way to accurately measure amino acids and their metabolites in plasma from sepsis patients. Furthermore, results from a time-course experiment demonstrated that plasma needs to be promptly separated from blood after collection in order to obtain reliable measurements of arginine. We found that increased circulating neutrophil counts were associated with increased plasma arginase activity, and decreased plasma arginine concentrations in sepsis. Furthermore we found that arginine bioavailability to nitric oxide synthase was further reduced by increased concentrations of asymmetric dimethylarginine in patients with septic shock. The ratio of arginine to asymmetric dimethylarginine was associated with decreased microvascular reactivity and increased inflammation in sepsis. We found that sepsis patients have decreased plasma tryptophan and increased plasma kynurenine concentrations, suggesting increased indoleamine 2,3- dioxygenase activity. An increased ratio of kynurenine to tryptophan was associated with decreased microvascular reactivity, increased inflammation and circulating T cell lymphopenia. Finally, we identified circulating activated granulocytes with a myeloid derived suppressor cell phenotype in septic shock patients which impair T cell signalling, partly via arginine depletion. The percentage of myeloid derived suppressor cells in sepsis was directly associated with plasma interleukin-6 concentrations. In summary, these findings demonstrate that systemic inflammation in sepsis is associated with both decreased amino acid bioavailability and increased circulating myeloid derived suppressor cells. Decreased amino acid bioavailability may contribute to endothelial and immune dysfunction in sepsis. Therapies which improve amino acid bioavailability may be potential adjunctive treatments in sepsis.
Escherichia coli transcriptional regulatory network
Creators: name: Martínez-Antonio, Agustino
Publisher: name: figshare
Year: 2014
Subjects: subject: 60114 Systems Biology
subject: FOS: Biological sciences
subject: Computational Biology
subject: Microbiology

description: In this review are presented several structural and functional aspects of their transcriptional regulatory network constituted by transcription factors and target genes. The network discussed here represent to 1531 genes and 3421 regulatory interactions. This network shows a power-law distribution with a few global regulators and most of genes poorly connected. 176 of genes in the network correspond to transcription factors, which form a sub-network of seven hierarchical layers where global regulators tend to be set in superior layers while local regulators are located in the lower ones.
Mechanisms and Controls of DNA Replication in Bacteria
Creators: name: Martínez-Antonio, Agustino
Publisher: name: figshare
Year: 2014
Subjects: subject: 60114 Systems Biology
subject: FOS: Biological sciences
subject: Computational Biology
subject: Microbiology

description: In this chapter we will focus our discussion on the mechanisms and controls that conduct DNA replication in bacteria, including the components, functions and regulation of replication machinery. Most of our discourse will consider this biological process in Escherichia coli but when possible we will compare it to other bacterial models, mainly Bacillus subtilis and Caulobacter crescentus as examples of organisms with asymmetrical cell division.
Hierarchical dynamics of a transcription factors network in E. coli
Creators: name: Martínez-Antonio, Agustino
name: Velázquez-Ramirez, David
name: Sánchez-Mondragón, Joel
name: Santillán, Moisés
Publisher: name: figshare
Year: 2014
Subjects: subject: 60114 Systems Biology
subject: FOS: Biological sciences
subject: Computational Biology
subject: Biological Engineering
subject: Microbiology

description: In the present work we study the transcription-factor regulatory network that controls the synthesis of flagella in E. coli. Our objective is to address how the transcription-factor dynamics (in terms of their promoter activities and associated rates) correlate with their positions in the hierarchical organization of this regulatory network. Our results suggest that global-regulator promoters express at higher rates than those of local regulators, particularly when the bacterial populations are actively growing. Furthermore, promoter activity decreases together with the rate of cellular division. And finally, local-regulator promoters reach their maximal activity later than global-regulator promoters do. In summary, our results suggest a strong correlation between promoter activities and their hierarchical organization in this particular regulatory network.
Share or Split: Understand Allocation of Tutor Attention Across Students via Discourse in Small-Group Tutoring
Creators: name: Zhang, Qingyang
Publisher: name: Stanford Digital Repository
Year: 2024
Subjects: Tutoring
Education Data Science
Instructional Attention
Natural language processing

description: Tutoring is a vital educational tool and a tu- tor’s attention is a crucial teaching resource for promoting more equitable and effective learn- ing. In small group tutoring, instructors pro- vide individualized attention to foster authentic engagement and mastery learning. In the mean- time, instructing multiple students requires the tutor to skillfully direct their attention to fa- cilitate collective learning and ensure equity among students. In this study, we develop a "split or share" (SoS) framework to measure instructional attention in small group settings. We apply natural language processing methods to automatically identify whom an instructor talks to and fine-tune a classier to achieve per- formance comparable to human categorization. Our findings reveal that tutors spend an average of 37.60% of their speaking time addressing both students simultaneously, suggesting that tutors split their attention across students to a certain degree in 2:1 sessions. Substantial varia- tion across sessions and tutors indicates diverse pedagogical styles and potential inequities in student engagement. Linguistic analyses show that tutors use subject-specific and task-related words when addressing both students, and more spoken assent or affect but also technical man- agement words when addressing individual stu- dents. Our approach highlights the potential of computational linguistics in making inferences about cognitive constructs like attention and providing a more fine-grained understanding of instructional practice.
Cadenas de ADN bajo representación de pseudocolores mediante imágenes digitales RGB
Creators: name: Martínez-Antonio, Agustino
Publisher: name: figshare
Year: 2014
Subjects: subject: 60114 Systems Biology
subject: FOS: Biological sciences
subject: Computational Biology

description: Una molécula de ADN puede ser representada por una secuencia de letras, siendo posibles 4 letras diferentes A, C, G y T, estas representan las bases nitrogenadas que forman el ADN: Adenina. Citosina, Guanina y Timina. Aqui proponemos una representación visual y que facilite el análisis de información contenido en estas secuencias. La representación propuesta permite visualizar la distribución de las bases nitrogenadas en la cadena de ADN sin alterar su distribución y preservando toda la información que contiene. Para demostrar que de dicha representación es posible extraer información, a las imágenes de un conjunto de genes de bacterias, se les aplicó reconocimiento de patrones, en base a un proceso de clasificación, para reconstruir una taxonomía como lo hacen los algoritmos para hacer filogenia molecular.
Correspondence, Joan S. McKinley and T. Bayles Minuse, September 1955
Creators: name: Minuse, T. Bayles
name: McKinley, Joan S.
Publisher: name: Unknown
Year: 1955
Subjects: Stony Brook
Tickets
Theatrical productions
Correspondence

description: These letters are between T. Bayles Minuse and Mrs. Jones S. Mckinley in September 1955, in regards to a refund for tickets.
A new approach to synchrotron energy-dispersive X-ray diffraction computed tomography
Creators: name: Sochi, Taha
Publisher: name: figshare
Year: 2014
Subjects: Crystallography
Applied Physics

description: A new data collection strategy for performing synchrotron energy-dispersive X-ray diffraction computed tomography has been devised. This method is analogous to angle-dispersive X-ray diffraction whose diffraction signal originates from a line formed by intersection of the incident X-ray beam and the sample. Energy resolution is preserved by using a collimator which defines a small sampling voxel. This voxel is translated in a series of parallel straight lines covering the whole sample and the operation is repeated at different rotation angles, thus generating one diffraction pattern per translation and rotation step. The method has been tested by imaging a specially designed phantom object, devised to be a demanding validator for X-ray diffraction imaging. The relative strengths and weaknesses of the method have been analysed with respect to the classic angle-dispersive technique. The reconstruction accuracy of the method is good, although an absorption correction is required for lower energy diffraction because of the large path lengths involved. The spatial resolution is only limited to the width of the scanning beam owing to the novel collection strategy. The current temporal resolution is poor, with a scan taking several hours. The method is best suited to studying large objects (e.g. for engineering and materials science applications) because it does not suffer from diffraction peak broadening effects irrespective of the sample size, in contrast to the angle dispersive case.
Cadenas de ADN bajo representación de pseudocolores mediante imágenes digitales RGB
Creators: name: Martínez-Antonio, Agustino
Publisher: name: figshare
Year: 2015
Subjects: subject: 60114 Systems Biology
subject: FOS: Biological sciences
subject: Computational Biology

description: Una molécula de ADN puede ser representada por una secuencia de letras, siendo posibles 4 letras diferentes A, C, G y T, estas representan las bases nitrogenadas que forman el ADN: Adenina. Citosina, Guanina y Timina. Aqui proponemos una representación visual y que facilite el análisis de información contenido en estas secuencias. La representación propuesta permite visualizar la distribución de las bases nitrogenadas en la cadena de ADN sin alterar su distribución y preservando toda la información que contiene. Para demostrar que de dicha representación es posible extraer información, a las imágenes de un conjunto de genes de bacterias, se les aplicó reconocimiento de patrones, en base a un proceso de clasificación, para reconstruir una taxonomía como lo hacen los algoritmos para hacer filogenia molecular.
Engineering Escherichia coli K12 MG1655 to use starch
Creators: name: Rosales-Colunga, Luis M.
name: Martínez-Antonio, Agustino
Publisher: name: figshare
Year: 2014
Subjects: subject: 60114 Systems Biology
subject: FOS: Biological sciences
subject: Biotechnology
subject: Biological Engineering
subject: Microbiology

description: We engineered an E. coli strain capable of using starch as a substrate. The genetic design employed the native capability of the bacterium to use maltodextrins as a carbon source plus expression and secretion of its endogenous α -amylase, AmyA, in an adapted background. Biomass production improved using 35% dissolved oxygen and pH 7.2 in a controlled bioreactor.
A core circuit, formed by a subset of regulatory interactions involving five global transcription factors (FIS, HNS, IHF, RpoS and GadX), has been identified by correlating information from the well- established transcriptional regulatory network of Esche
Creators: name: Martínez-Antonio, Agustino
Publisher: name: figshare
Year: 2014
Subjects: subject: 60114 Systems Biology
subject: FOS: Biological sciences
subject: Computational Biology

description: Una molécula de ADN puede ser representada por una secuencia de letras, siendo posibles 4 letras diferentes A, C, G y T, estas representan las bases nitrogenadas que forman el ADN: Adenina. Citosina, Guanina y Timina. Aqui proponemos una representación visual y que facilite el análisis de información contenido en estas secuencias. La representación propuesta permite visualizar la distribución de las bases nitrogenadas en la cadena de ADN sin alterar su distribución y preservando toda la información que contiene. Para demostrar que de dicha representación es posible extraer información, a las imágenes de un conjunto de genes de bacterias, se les aplicó reconocimiento de patrones, en base a un proceso de clasificación, para reconstruir una taxonomía como lo hacen los algoritmos para hacer filogenia molecular.
Implementing alcohol harm reduction interventions in an Australian Indigenous context
Creators: name: Whitty, Megan
Publisher: name: Charles Darwin University
Year: 2017

description: Implementing alcohol misuse interventions in the Northern Territory is challenging and the role of evaluation in this process ill defined. Indigenous Australians are at higher-risk of premature death and disability from alcohol misuse than the general population. The aim of this study is to investigate the dissemination of alcohol harm-reduction research into practice settings. This program of research was designed to provide important new information on the quality and direction of dissemination studies with a view to improving future implementation efforts in this field. Implementation science models and frameworks offer the potential to bridge current knowledge gaps. The primary objectives were to determine: (a)the scope and nature of the evidence that underpins implementation within the literature; (b) detail of the implementation contexts; and (c), methods for facilitating implementation and improving outcomes. A combination of research approaches were employed including a systematic review using a validated appraisal tool and narrative synthesis. Two mixed methods case studies were also conducted. Both explored in detail the process of implementing alcohol interventions; one in a tertiary care setting, the other in the context of a holistic community-action approach. The Promoting Action on Research Implementation in Health Services (PARIHS) framework provided an overarching conceptual framework and post hoc reference guide. Key findings are that there is a lack of quality research that is culturally inclusive, and inconsistencies in the evaluation and reporting of implementation outcomes. In addition, the role of facilitator and the facilitators’ ability to rectify contextual impediments to implementation, particularly at the macro level, is generally undervalued. There is a need for both funding bodies and researchers to prioritise the conduct of robust implementation research studies. Maximal contextual support and demonstrated Indigenous involvement needs to be tied into funding allocation.
Regulatory switches for hierarchical use of carbon sources in E. coli
Creators: name: Pérez-Alfaro, Ruth
name: Galán-Vásquez, Edgardo
name: Santillán, Moisés
name: Martínez-Antonio, Agustino
Publisher: name: figshare
Year: 2014
Subjects: subject: 60114 Systems Biology
subject: FOS: Biological sciences
subject: Computational Biology
subject: Biological Engineering
subject: Microbiology

description: In this work we study the preferential use of carbon sources in the bacterium Escherichia coli. To that end we engineered transcriptional fusions of the reporter gene gfpmut2, downstream of transcription-factor promoters,and analyzed their activity under several conditions. The chosen transcription factors are known to regulate catabolic operons associated to the consumption of alternative sugars. The obtained results indicate the following hierarchical order of sugar preference in this bacterium: glucose > arabinose > sorbitol > galactose. Further dynamical results allowed us to conjecture that this hierarchical behavior might be operated by at least the following three regulatory strategies: 1) the coordinated activation of the corresponding operons by the global regulator catabolic repressor protein (CRP), 2) their asymmetrical responses to specific and unspecific sugars and, 3) the architecture of the associated gene regulatory networks.
Life history correlations and trade-offs resulting from selection for dispersal in Tribolium castaneum
Creators: name: Pointer, Michael
Publisher: name: Zenodo
Year: 2024
Subjects: Tribolium
dispersal
behaviour
Artificial selection

description: Dispersal is an important facet of the life history of many organisms and is therefore subject to selective pressure, but does not evolve in isolation. Across nature, there are examples of dispersal syndromes, life history strategies in which suites of traits coevolve, and covary with dispersal in combinations that serve to maximise fitness in a given ecological context. The red rust flour beetle, Tribolium castaneum, is a model organism and globally significant post-harvest pest that relies on dispersal to reach new patches of ephemeral habitat. Dispersal behaviour in Tribolium has a strong genetic basis. However, a robust understanding of the relationship between dispersal and other life-history components, which could elucidate evolutionary processes and allow pest managers to control their spread and reduce the impact of infestation, is currently lacking. Here we use highly replicated lines of T. castaneum previously artificially selected for divergent small-scale dispersal propensity, to robustly test several important life history components: reproductive strategy, development time, and longevity. As predicted, we find that a suite of important changes as a result of our selection on dispersal; high dispersal propensity is associated with a lower number of longer mating attempts by males, lower investment in early-life reproduction by females, slower development of later-laid offspring and longer female lifespan. These findings indicate that correlated intraspecific variation in dispersal and related traits may represent alternative life history strategies in T. castaneum. We therefore suggest that pest management efforts to mitigate the species' agro-economic impact should consider the eco-evolutionary dynamics within multiple life histories. The benefits of doing so could be felt both through improved targeting of efforts to reduce spread, and also in forecasting how the selection pressures applied through pest management are likely to affect pest evolution.
description: Funding provided by: Biotechnology and Biological Sciences Research CouncilCrossref Funder Registry ID: https://ror.org/00cwqg982Award Number:
Dynamic X-Ray Diffraction Computed Tomography Reveals Real-Time Insight into Catalyst Active Phase Evolution
Creators: name: Sochi, Taha
Publisher: name: figshare
Year: 2014
Subjects: Crystallography
Applied Physics

description: Metals and metal oxides anchored to porous support materials are widely used as heterogeneous catalysts in a number of important industrial chemical processes. These catalysts owe their activity to the formation of unique metal/metal oxide support interactions, typically resulting in highly dispersed actives stabilized in a particular electronic or coordination state. They are employed in fixed-bed reactors as extruded or pelletized millimeter-sized “catalyst bodies” minimizing pressure drops along the length of the reactor. Since the efficiency of the whole catalytic system depends on the behavior and efficiency of the catalyst body per se, its design has very great importance. Crucial to this design is an understanding of the factors which influence the distribution and nature of the active phase during preparation. The type of desired distribution is very much dependant on catalytic process and required products; for example, an egg-shell distribution (as opposed to uniform, egg-white, or egg-yolk), where the active phase is located at the edges of the catalyst body, can be favored if the product forms readily.
The flow of power-law fluids in axisymmetric corrugated tubes
Creators: name: Sochi, Taha
Publisher: name: figshare
Year: 2014
Subjects: subject: Applied Physics
subject: Mechanical Engineering
subject: FOS: Mechanical engineering

description: In this article we present an analytical method for deriving the relationship between the pressure drop and flow rate in laminar flow regimes, and apply it to the flow of power-law fluids through axially-symmetric corrugated tubes. The method, which is general with regard to fluid and tube shape within certain restrictions, can also be used as a foundation for numerical integration where analytical expressions are hard to obtain due to mathematical or practical complexities. Five converging–diverging geometries are used as examples to illustrate the application of this method.
Slip at Fluid-Solid Interface
Creators: name: Sochi, Taha
Publisher: name: figshare
Year: 2014
Subjects: Applied Physics

description: The “no-slip” is a fundamental assumption and generally-accepted boundary condition in rheology, tribology, and fluid mechanics with strong experimental support. The violations of this condition, however, are widely recognized in many situations, especially in the flow of non-Newtonian fluids. Wall slip could lead to large errors and flow instabilities, such as sharkskin formation and spurt flow, and hence complicates the analysis of fluid systems and introduces serious practical difficulties. In this article, we discuss slip at fluid-solid interface in an attempt to highlight the main issues related to this diverse complex phenomenon and its implications.
Computational techniques for efficient conversion of image files from area detector
Creators: name: Sochi, Taha
Publisher: name: figshare
Year: 2014
Subjects: Crystallography
Applied Physics

description: Area detectors are used in many scientific and technological applications such as particle and radiation physics. Thanks to the recent technological developments, the radiation sources are becoming increasingly brighter and the detectors become faster and more efficient. The result is a sharp increase in the size of data collected in a typical experiment. This situation imposes a bottleneck on data processing capabilities, and could pose a real challenge to scientific research in certain areas. This article proposes a number of simple techniques to facilitate rapid and efficient extraction of data obtained from these detectors. These techniques are successfully implemented and tested in a computer program to deal with the extraction of X-ray diffraction patterns from EDF image files obtained from CCD detectors.
Comparison of the X-Ray Performance of Small Pixel CdTe and CZT Detectorss
Creators: name: Sochi, Taha
Publisher: name: figshare
Year: 2014
Subjects: Crystallography
Applied Physics

description: The Rutherford Appleton Laboratory has built a small pixel detector for spectroscopic measurements of high energy X-rays using CdTe and CdZnTe. The detector has an array of 20x20 pixels on a 250μm pitch with each pixel bonded to a separate channel on an application specific integrated circuit (ASIC). Each channel in the ASIC contains a charge preamplifier, leakage current compensation circuit, shaping amplifier and peak hold circuit. In recent years there has been an increase in the availability of high quality CdTe and CdZnTe material and the contacting technology required for low leakage current small pixel devices. The energy resolution and stability of the X-ray performance of 1mm thick CdTe with Aluminum Schottky contact pixels and 2mm thick CdZnTe grown by travelling heater method (THM) are measured. The CdTe detectors had an energy resolution of 1 to 1.1keV at 75keV. The THM CdZnTe had an energy resolution of 1.3keV at 75keV. The stability of the performance was measured over a 12 hour exposure with the detectors biased to -500V and held at 25 ºC. The CdZnTe exhibited stable performance whereas the CdTe suffered from bias induced polarization, the onset of which was delayed by cooling the detectors to 12ºC.