cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Determinación normal o gaussiana de la resistencia del concreto a través de métodos no destructivos
Creators: name: Castro Gutierrez, Elkin
name: Ortega Zambrano, Henry Manuel
name: Covo, Alvaro (Director)
Publisher: name: Universidad de Cartagena
Year: 1998
Subjects: Hormigón
Hormigón - Pruebas

description: Tesis (Ingeniero Civil) -- Universidad de Cartagena. Facultad de Ciencias E Ingeniería. Programa de Ingeniería Civil. 1998.
description: El presente estudio tiene por objeto comprobar el tipo de distribución de frecuencias que presentan los métodos no destructivos, ya sea para una lectura o numero de rebote (esclerométro) o para un rango de velocidad (pundit).
Energy spectrum, exchange interaction and gate crosstalk in a pair of double-quantum-dot system: a molecular orbital calculation
Creators: name: Yang, Xu-Chen
name: Wang, Xin
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We present a theoretical study of a four-electron four-quantum-dot system based on molecular orbital methods, which hosts a pair of singlet-triplet spin qubits. We explicitly take into account of the admixture of electron wave functions in all dots, and have found that this mixing of wave functions has consequences on the energy spectrum, exchange interaction and the gate crosstalk of the system. Specifically, we have found that when the two singlet-triplet qubits are close enough, some of the states are no longer dominated by the computational basis states and the exchange interaction can not simply be understood as the energy difference between the singlet and triplet states. Using the Hund-Mulliken calculation of the Hubbard parameters, we characterize the effective exchange interaction of the system and have found good agreement with results calculated by taking energy differences where applicable. We have studied the two commonly conceived schemes coupling two qubits, the exchange and capacitive coupling, and have found that when the inter-qubit distance is at certain intermediate values, the two kinds of coupling are comparable in strength, complicating analyses of the evolution of the two qubits. We also investigate the gate crosstalk in the system due to the quantum mechanical mixing of electron states and have found that while this effect is typically very weak, it should not be ignored if the spacing between the qubits are similar to or less than the distance between the double dots that constitute the qubit.
description: 11 pages, 6 figures
Civilization and duality in the Heracles myth
Creators: name: Dunn, Joseph
Publisher: name: La Trobe
Year: 2023

description: Submission note: A thesis submitted in total fulfilment of the requirements for the degree of Masters of History to the School of Humanities and Social Sciences, La Trobe University, Bundoora.

This thesis will discuss the character of the mythic hero Heracles within various, primarily Greek, texts between the Iliad (eighth or seventh century BCE) and the Bibliotheca (first or second century CE). Heracles is commonly depicted in these texts in two ways. First, as a civilizer, his action benefitting humanity and the gods by defeating dangerous creatures and people; and second as a brutish and uncivilized individual who frequently breaks social taboos, commits violent and impious acts. The thesis will argue not only this dichotomy in the depiction of Heracles, but also that these two sides to Heracles’ persona are strongly related to one another, as it is Heracles’ uncivilized nature that makes him so successful in fighting the uncivilized. To argue this case, the thesis will be structured into four chapters, each one addressing a common element of Heracles’ myth and discussing how it contributes to his persona as an uncivilized civilizer. The first chapter will address Heracles’ early life, including his conception, birth and youth. This chapter will deal with Heracles’ relation to the civilized and will show what a destructive force Heracles can be in a civilized setting. The second chapter will discuss Heracles’ practice of archery and how it represents his status as a social outcast. The third chapter will continue this theme, discussing Heracles’ empathetic connection to the animals that he fights, and is particularly focused around the Nemean Lion whose skin he wears as a cloak. The fourth and final chapter will discuss Heracles’ death and his apotheosis. Here it will be argued that Heracles’ death represents his ultimate redemption, in so far as his persona is divided between his uncivilized self, who appears as a ghost in Hades, and his civilizer self, who is rewarded with immortality and divinity on Olympus.
Large deformation and instability of soft hollow cylinder with surface effects
Creators: name: Wu, Jian
name: Liu, Mingchao
name: Wang, Zhenyu
name: Chen, C. Q.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Surface stress, which is always neglected in classical elastic theories, has recently emerged as a key role in the mechanics of highly deformable soft solids. In this paper, the effect of surface stress on the deformation and instability of soft hollow cylinder are analyzed. By incorporating surface energy density function into the constitutive model of a hyper-elastic theory, explicit solutions are obtained for the deformation of soft hollow cylinder under the conditions of uniform pressure loading and geometric everting. It is found that surface tension evidently alters the deformation of the soft cylinder. Specifically, the surface stiffness resists the deformation, but the residual surface stress is inclined to larger deformation. Effects of surface stress on the instability of the soft hollow cylinder is also explored. For both the pressure loading and geometric everting conditions, significant changes in critical condition of the creases are found by varying the surface parameter. The results in this work reveal that surface energy obviously influences both the deformation and the instability of soft hollow cylinder at finite deformation. The obtained results will be helpful for understanding and predicting the mechanical behavior of soft structures accurately.
description: 27 pages, 7 figures
The implications of large binding energies of massive stripped core collapse supernova progenitors on the explosion mechanism
Creators: name: Shishkin, Dmitry
name: Soker, Noam
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We examine the binding energies of massive stripped-envelope core collapse supernova (SECCSN) progenitors with the stellar evolution code MESA, and find that the jittering jets explosion mechanism is preferred for explosions where carbon-oxygen cores with masses of $>20 M_\odot$ collapse to leave a neutron star (NS) remnant. We calculate the binding energy at core collapse under the assumption that the remnant is a NS. Namely, stellar gas above mass coordinate of $~1.5-2.5 M_\odot$ is ejected in the explosion. We find that the typical binding energy of the ejecta of stripped-envelope progenitors with carbon-oxygen core masses of $M_{CO} > 20 M_\odot$ is $E_{bind}>2 \times 10^{51} erg$. We claim that jets are most likely to explode such cores as jet-driven explosion mechanisms can supply high energies to the explosion. We apply our results to SN 2020qlb, which is a SECCSN with a claimed core mass of $~30-50 M_\odot$, and conclude that the jittering jets explosion mechanism best accounts for such an explosion that leaves a NS.
description: Accepted for publication in MNRAS
Constraints on Clumps in the Representative Wind of the WN8 Wolf-Rayet star HD96548 = WR40 with Simultaneous Broadband Light and Linear-Polarisation Variability
Creators: name: Ignace, Richard
name: Moffat, Anthony
name: Robert, Carmelle
name: Drissen, Laurent
Publisher: name: arXiv
Year: 2022
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We report precision ground-based broadband optical intensity and linear-polarisation light-curves for the sky's brightest WN8 star, WR40. WN8 stars are notorious for their high level of variability, stemming from stochastic clumps in their strong winds that are slower and less hot than the winds of most other Wolf-Rayet (WR) stars. We confirm previous results that many WR stars display an amplitude of variability that is an order-of-magnitude higher in photometry than in polarimetry. For the first time, the unique nature of near simultaneity of our photometric and polarimetric observations of WR40 allows us to check whether the two types of variability show correlated behaviour, of which we find none. Assuming simple temporal functions for the brightness and polarisation of individual clumps, a model for simulated light curves is found to reproduce the properties of the observations, specifically the absence of correlation between photometric and polarimetric variations, the ratio of standard deviations for photometric and polarimetric variability, and the ratio of the average intrinsic polarisation relative to its standard deviation. Mapping the solution for time variability to a spatial coordinate suggests that the wind clumps of WR40 are free-free emitting in addition to light scattering.
description: to appear in MNRAS
title: CSF-1 und/oder Interleukin-34 in der Pathogenese des systemischen Lupus erythematodes
Creators: name: Menke, Julia
name: Schmitt, Sabine
name: Weinmann, Arndt
name: Schwarting, Andreas
Publisher: name: German Medical Science GMS Publishing House
Year: 2015
Subjects: subject: 610 Medical sciences; Medicine

description: Einleitung: CSF-1 der Ligand des CSF-1 Rezeptors (CSF-1R) ist ein bedeutender Faktor für die Entwicklung, Differenzierung und Proliferation von Makrophagen (Mø). Unsere Vorarbeiten konnten zeigen, dass 1) CSF-1-defiziente MRL-Faslpr Mäuse vor der Lupusnephritis geschützt sind 2) [zum vollständigen Text gelangen Sie über die oben angegebene URL]
description: 43. Kongress der Deutschen Gesellschaft für Rheumatologie (DGRh); 29. Jahrestagung der Deutschen Gesellschaft für Orthopädische Rheumatologie (DGORh); 25. wissenschaftliche Jahrestagung der Gesellschaft für Kinder- und Jugendrheumatologie (GKJR)
title: Ein neues computergestütztes Werkzeug für die Dokumentation von radiologischen Gelenkveränderungen bei rheumatoider Arthritis – erste Ergebnisse
Creators: name: Langer, Alexander
name: Pfeil, Alexander
name: Renz, Diane
name: Böttcher, Joachim
name: Langer, Hans-Eckhard
Publisher: name: German Medical Science GMS Publishing House
Year: 2015
Subjects: subject: 610 Medical sciences; Medicine

description: Einleitung: Die radiographische Progression ist ein zentraler Outcome-Parameter bei der rheumatoiden Arthritis (RA)1. Das manuelle Scoren von Gelenkveränderungen mit den etablierten Verfahren (z.B. dem Sharp-Score) ist jedoch sehr zeitaufwendig und benötigt durchschnittlich etwa 30 Minuten[zum vollständigen Text gelangen Sie über die oben angegebene URL]
description: 43. Kongress der Deutschen Gesellschaft für Rheumatologie (DGRh); 29. Jahrestagung der Deutschen Gesellschaft für Orthopädische Rheumatologie (DGORh); 25. wissenschaftliche Jahrestagung der Gesellschaft für Kinder- und Jugendrheumatologie (GKJR)
Bose-Einstein-condensed scalar field dark matter and the gravitational wave background from inflation: new cosmological constraints and its detectability by LIGO
Creators: name: Li, Bohua
name: Shapiro, Paul R.
name: Rindler-Daller, Tanja
Publisher: name: arXiv
Year: 2016
Subjects: 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 consider an alternative cold dark matter candidate, ultralight bosons ($m>10^{-22}$eV) described by a complex scalar field (SFDM) with global U(1) symmetry, with comoving particle number density conserved after particle production during standard reheating. We allow for repulsive self-interaction. In a Lambda-SFDM universe, SFDM starts relativistic, evolving from stiff (w=1) to radiation-like (w=1/3), becoming nonrelativistic (w=0) at late times. Thus, a stiff-SFDM-dominated era precedes the familiar radiation-dominated era. SFDM particle mass $m$ and quartic self-interaction strength λ, are therefore constrained by cosmological observables, N_{eff}, the effective number of neutrino species during BBN, and z_{eq}, the matter-radiation equality redshift. Since the stochastic gravitational wave background (SGWB) from inflation is amplified during the stiff-SFDM-dominated era, it can also contribute a radiationlike component large enough to affect these observables. Remarkably, this amplification makes this SGWB detectable by current GW experiments, e.g., aLIGO/Virgo and LISA, for Lambda-SFDM models satisfying cosmological constraints, for a range of reheat temperatures T_{re} and currently allowed values of tensor-to-scalar ratio $r$. For given r and $λ/(mc^2)^2$, the marginally-allowed Lambda-SFDM model for each T_{re} has the smallest m that satisfies cosmological constraints. For example, for marginally-allowed models with r=0.01 and $λ/(mc^2)^2=10^{-18}$eV$^{-1}$cm$^3$, null detection by the aLIGO O1 run excludes 8.75*10^3
description: 54 pages, 13 figures, 2 tables, revised and resubmitted to Physical Review D. This version expanded the manuscript to take into account the implications on the SGWB from the recent release of the Advanced LIGO O1 data run. Typos fixed. References added
title: Molecular characterization of extracellular vesicles from apoptotic and activated lymphocytes
Creators: name: Tucher, Christine
name: Heyder, Petra
name: Krienke, Stefan
name: Lorenz, Hanns-Martin
name: Schiller, Martin
Publisher: name: German Medical Science GMS Publishing House
Year: 2015
Subjects: subject: 610 Medical sciences; Medicine

description: Introduction: The release of different types of extracellular vesicles (EV) is observed after cellular activation or apoptosis induction. A role for EV in the pathogenesis of autoimmune diseases has been discussed. Microvesicles (MV) are a type of EV which are released from the outer cellular membrane[for full text, please go to the a.m. URL]
description: 43. Kongress der Deutschen Gesellschaft für Rheumatologie (DGRh); 29. Jahrestagung der Deutschen Gesellschaft für Orthopädische Rheumatologie (DGORh); 25. wissenschaftliche Jahrestagung der Gesellschaft für Kinder- und Jugendrheumatologie (GKJR)
Dynamic contact angle hysteresis in liquid bridges
Creators: name: Shi, Zhang
name: Zhang, Yi
name: Liu, Mingchao
name: Hanaor, Dorian A. H.
name: Gan, Yixiang
Publisher: name: arXiv
Year: 2017
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: This work presents a combined experimental and theoretical study of dynamic contact angle hysteresis using liquid bridges under cyclic compression and stretching between two identical plates. Under various loading rates, contact angle hysteresis for three different liquids was measured by examination of advancing and receding angles in liquid bridges, and the capillary forces were recorded. It is found that, for a given liquid, the hysteretic phenomenon of the contact angle is more pronounced at higher loading rates. By unifying the behaviour of the three liquids, power-law correlations were proposed to describe the relationship between the dynamic contact angle and the capillary number for advancing and receding cases. It is found that the exponents of obtained power-law correlations differ from those derived through earlier methods (e.g., capillary rise), due to the different kinematics of the triple-line. The various hysteretic loops of capillary force in liquid bridges under varied cyclic loading rates were also observed, which can be captured quantitatively by the prediction of our developed model incorporating the dynamic contact angle hysteresis. These results illustrate the importance of varying triple-line geometries during dynamic wetting and dewetting processes, and warrant an improved modelling approach for higher level phenomena involving these processes, e.g., multiphase flow in porous media and liquid transfer between surfaces with moving contact lines.
description: 24 pages, 6 figures
Propuesta de intervención social orientada a la inclusión de la población en condición de discapacidad auditiva en la ciudad de Cartagena.
Creators: name: Herrera Rodríguez, Karen Margarita
name: Simanca Palencia, Sandra Sugeys
Publisher: name: Universidad de Cartagena
Year: 2012
Subjects: Trabajo social

description: Tesis (Trabajador(a) Social) -- Universidad de Cartagena. Facultad de Ciencias Sociales y Educación. Programa de Trabajo Social, 2012
description: Desde nuestra postura de profesionales de las ciencias sociales y como producto de la experiencia de práctica realizada en el marco de la formación de trabajadoras y trabajadores sociales, en donde se tuvo la oportunidad de adentramos a las condiciones de vida en que vive la población con limitaciones auditivas en el distrito de Cartagena, quienes se ven enfrentados a constantes comportamientos de exclusión social, política, cultural y económica, convirtiéndose en el disparador para que se asumiera como uno de nuestros retos el diseño de una propuesta de intervención encaminada hacia la inclusión de estos sujetos sociales garantes de derechos, ejercicio que posibilito la validación del proceso de enseñanza y aprendizaje en que nos formamos.
Management control practices, people and power relations: case studies of two universities
Creators: name: Seneviratne, Chaturika Priyadarshani
Publisher: name: La Trobe
Year: 2023

description: Submission note: A thesis submitted in total fulfilment of the requirements for the degree of Doctor of Philosophy to the Department of Accounting and Data Analytics, La Trobe Business School, La Trobe University, Bundoora.
Testbed for Functional Safety-Relevant Wireless Communication Based on IO-Link Wireless and 5G
Creators: name: Doebbert, Thomas R.
name: Beuster, Henry
name: Fischer, Florian
name: Merli, Dominik
name: Scholl, Gerd
Publisher: name: arXiv
Year: 2022
Subjects: subject: Cryptography and Security (cs.CR)
subject: Systems and Control (eess.SY)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: In the field of industrial production automation, wireless networks support highly flexible manufacturing processes and enable technologies to set-up new production chains and future software businesses. The IO-Link Wireless (IOLW) protocol is an already established energy-efficient and cost-effective communication standard for smart sensor devices on the industrial shop floor, whereas the mobile communication standard 5G will be mainly applied for medium and long-range wireless communication applications promising low latency times and high reliability. Therefore, 5G with the coming enhancement of deterministic ultra-Reliable Low-Latency Communication (uRLLC) is combined with the robustness and low-latency performance characteristics of IO-Link Wireless. Features of both technologies are highly beneficial to realize even highly demanding safety-related applications. The presented testbed shall qualify wireless functional safety communication with respect to its Residual Error Probability (REP) and quantify the Probability of Failure per Hour (PFH).
title: Rescue of chondrocytic phenotype using small peptides to inhibit canonical WNT/β-catenin signaling
Creators: name: Held, Annelena
name: Glas, Adrian
name: Dietrich, Laura
name: Grossmann, Tom N.
name: Pap, Thomas
name: Bertrand, Jessica
Publisher: name: German Medical Science GMS Publishing House
Year: 2015
Subjects: subject: 610 Medical sciences; Medicine

description: Introduction: In osteoarthritis (OA), chondrocytes undergo hypertrophic differentiation. During OA, the matrix is remodeled, including down-regulation of genes such as Acan and Col2a1. One of the signaling pathways involved in chondrocyte differentiation is the canonical WNT/β-catenin signaling[for full text, please go to the a.m. URL]
description: 43. Kongress der Deutschen Gesellschaft für Rheumatologie (DGRh); 29. Jahrestagung der Deutschen Gesellschaft für Orthopädische Rheumatologie (DGORh); 25. wissenschaftliche Jahrestagung der Gesellschaft für Kinder- und Jugendrheumatologie (GKJR)
La revista digital como estrategia didáctica para fortalecer la escritura colaborativa en estudiantes de grado quinto de la Institución Educativa Felidia en Santiago de Cali
Creators: name: Ruiz Barona, Katherine
Publisher: name: Universidad de Cartagena
Year: 2021
Subjects: subject: Tecnología educativa
subject: Innovaciones educativas
subject: Sitios web educativos
subject: Escritura - Enseñanza

description: En este trabajo se pretende fortalecer la escritura colaborativa a partir de la creación de una revista digital utilizando la metodología acción participativa, en una población muestra de 25 estudiantes del grado quinto de básica primaria de la Institución Educativa Rural Felidia, en Santiago de Cali. Con quienes a través de encuentros sincrónicos por la aplicación WhatsApp, se fueron desarrollando las fases de diagnóstico y puesta en escena del proceso escritor co-creativo de la revista digital. Es así como, para determinar los niveles de escritura y la revisión de experiencias significativas implementadas por los docentes, se hizo necesario el uso de cuestionarios en línea, que facilitaran el análisis de la información recogida. En la siguiente fase, se dio espacio a la etapa creativa de diseño colaborativo desde la creación de un blog colectivo y un libro infantil digital, que coadyuvaron a la creación del bosquejo final de la revista digital, mostrando al final el impacto positivo de la implementación de la propuesta didáctica en las competencias escritoras de los estudiantes, así como en la comunidad en general.
Production and Characterization of Oil from Brassica Nigra Seeds Using the Solvent Extraction Method
Creators: name: Getachew, Chane
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2018

description: The objective of this study was the production and characterization of oil from Brassica Nigra seeds using the soxhlet extraction method were undertaken. In the soxhlet extraction a n-hexane was chosen to determine the effect of extraction time (2,4 and 6 hours), extraction temperature (65,70 and 75℃) and solid to solvent ratio (0.08,0.1 and 0.12) on yield of extraction oil. Firstly, the oil extract was characterized by density, moisture content, specific gravity, viscosity and refractive index, saponification value, iodine value, acid value, peroxide value and the results were compared with literature. The results showed that there is no difference from the seed oil extract from the Brassica nigra seeds which was producing in other parts of the world. therefore, the extraction and physicochemical properties of seed oil from Brassica nigra seed using a soxhlet extraction method has been carried out. A Box-Behnken Design (BBD) was applied to extraction process using Design Expert software and linear regression model was obtained growing the individual effect of extraction time, solid to solvent ratio and extraction temperature as parameter and their interaction in the entire extraction process. For the soxhlet extraction, the maximum oil yield has been determined as 46.205% after the extraction time of 2 hours with solid to solvent ratio (0.12g/mL) at extraction temperature of 70℃ and the minimum oil yield 34.97% was found at the extraction time of 4 hours with extraction temperature of 65℃ at solid to solvent ratio (0.08 g/mL). Therefore, increasing solid to solvent ratio, extraction temperature and decreasing extraction time will increase the amount of oil extracted.the selected seed oil properties (specific gravity,viscosity, density, Saponification Value, Acid Value, Iodine Value, Peroxide Value and refractive index) of the extracted oil were determined and the result of characterization of the oil indicated that the viscosity at 21ºC ( 9.16*10^-6 m2/s) and specific gravity at 20℃ ( 0.89346), density(0.8891g/cm3), Saponification Value(172.788 mgKOH/gm), Acid Value(2.992 ), Iodine Value(95.26), Peroxide Value(2.14) and refractive index(1.45504) .
Bounds on transport from hydrodynamic stability
Creators: name: Gavassino, L.
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Mathematical Physics (math-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: It was recently shown that the dispersion relations describing singularities of retarded two-point functions in causal quantum field theories always satisfy the fundamental inequality $\mathfrak{Im} \, ω\leq |\mathfrak{Im} \, k|$, and that several rigorous bounds on transport coefficients follow directly from such inequality. Here, we prove that the same inequality, $\mathfrak{Im} \, ω\leq |\mathfrak{Im} \, k|$, is a necessary condition for a fluid theory to be covariantly stable (i.e. stable in all frames of reference). Hence, the same bounds on transport that follow from causality in quantum field theory also emerge as stability conditions within relativistic hydrodynamics. This intimate connection between bounds from causality and bounds from stability stems from the fact that covariant stability is possible only in the presence of causality. As a quick application, we show that fluids with luminal speed of sound have vanishing viscosities.
description: 6 pages, 2 figures
Gray codes and symmetric chains
Creators: name: Gregor, Petr
name: Jäger, Sven
name: Mütze, Torsten
name: Sawada, Joe
name: Wille, Kaja
Publisher: name: arXiv
Year: 2018
Subjects: subject: Combinatorics (math.CO)
subject: Discrete Mathematics (cs.DM)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences

description: We consider the problem of constructing a cyclic listing of all bitstrings of length $2n+1$ with Hamming weights in the interval $[n+1-\ell,n+\ell]$, where $1\leq \ell\leq n+1$, by flipping a single bit in each step. This is a far-ranging generalization of the well-known middle two levels problem (the case $\ell=1$). We provide a solution for the case $\ell=2$, and we solve a relaxed version of the problem for general values of $\ell$, by constructing cycle factors for those instances. The proof of the first result uses the lexical matchings introduced by Kierstead and Trotter, which we generalize to arbitrary consecutive levels of the hypercube. The proof of the second result uses symmetric chain decompositions of the hypercube, a concept known from the theory of posets. We also present several new constructions of such decompositions based on lexical matchings. In particular, we construct four pairwise edge-disjoint symmetric chain decompositions of the $n$-dimensional hypercube for any $n\geq 12$.
The modern epidemiology of infective endocarditis
Creators: name: Athan, Eugene
Publisher: name: Monash University
Year: 2017
Subjects: Uncategorized

description: The contemporary picture of infective endocarditis (IE) commonly affects elderly patients with extensive health care contact, often involving prosthetic valves, cardiac devices and is caused by Staphylococci, in particular, Staphylococcus aureus predominates. Health care association (HCA) now accounts for about half of all cases of IE; in particular those caused by S. aureus, coagulase negative Staphylococci and involving prosthetic valves and cardiac devices. Predisposing factors include intravascular devices, hemo-dialysis and the timing of procedures such as implantation of cardiac devices. There is now significant evidence that a high proportion of patients with Staphylococcus aureus bacteremia (SAB) in fact have IE and that this can only reliably be detected by performing transoesophageal echocardiography (TOE). Health care associated infection (HCA) is increasingly recognised and may be potentially preventable through meticulous attention to asepsis, intravascular catheter device care and in selected populations, with topical skin asepsis or antibiotic prophylaxis. This requires further prospective controlled studies. Cardiac devices are increasingly implanted worldwide and carry an early infection risk related to the implantation procedure, but also longer term through inter-current blood stream infections. The potential for prevention by antibiotic and other modifiable risk factors requires further study. Increasingly other organisms such as Enterococci and Candida species fungal infections are being reported. Novel anti-fungal agents such as Caspofungin and the other echinocandins have improved the outcome for patients with fungal IE who are deemed unsuitable for surgical intervention, however larger trials are needed. Despite increased age and co-morbidities surgical treatment such as valve replacement and cardiac device removal is performed successfully and increasingly in over half of all cases of IE. Parenteral antibiotic therapy is increasingly being delivered safely at home (HITH) in stable and carefully selected patients. A detailed economic evaluation of home care would be of further value. Over the last 12 years the research that I and my collaborators have led has significantly contributed to the medical literature demonstrating significant changes in the epidemiology of IE in the early 21st century. We have identified key patient risk factors in the health care setting which will better enable clinicians worldwide to better manage and prevent IE. There needs to be closer attention to aseptic technique, intravascular device care and early removal. We have emphasised the increasing role of novel antimicrobials to optimise treatment in drug resistant infections and finally the importance of early definitive surgery and device removal in complex cases.
Eternal non-Markovianity: from random unitary to Markov chain realisations
Creators: name: Megier, Nina
name: Chruściński, Dariusz
name: Piilo, Jyrki
name: Strunz, Walter T.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The theoretical description of quantum dynamics in an intriguing way does not necessarily imply the underlying dynamics is indeed intriguing. Here we show how a known very interesting master equation with an always negative decay rate [eternal non-Markovianity (ENM)] arises from simple stochastic Schrödinger dynamics (random unitary dynamics). Equivalently, it may be seen as arising from a mixture of Markov (semi-group) open system dynamics. Both these approaches lead to a more general family of CPT maps, characterized by a point within a parameter triangle. Our results show how ENM quantum dynamics can be realised easily in the laboratory. Moreover, we find a quantum time-continuously measured (quantum trajectory) realisation of the dynamics of the ENM master equation based on unitary transformations and projective measurements in an extended Hilbert space, guided by a classical Markov process. Furthermore, a Gorini-Kossakowski-Sudarshan-Lindblad (GKSL) representation of the dynamics in an extended Hilbert space can be found, with a remarkable property: there is no dynamics in the ancilla state. Finally, analogous constructions for two qubits extend these results from non-CP-divisible to non-P-divisible dynamics.
description: 14 pages, 2 figures, with supplementary material
Becoming somebody: A constructivist grounded theory of marginalised young people re-engaging with education through an alternative school
Creators: name: Hobbs, Carmel Maree
Publisher: name: La Trobe
Year: 2023

description: Submission note: A thesis submitted in total fulfilment of the requirements for the degree of Doctor of Philosophy to the School of Psychology and Public Health, College of Science, Health and Engineering, La Trobe University, Bundoora.

Thesis with publications.

Early school leaving exacerbates social marginalisation and limits a young person’s life chances. In Australia, one in five young people do not complete school. A growing body of evidence highlights that multiple and complex factors contribute to educational disengagement and re-engagement. However, there is only limited research on the ways in which young people themselves articulate the processes involved in their disengagement and re-engagement with education over time. Using a constructivist grounded theory approach, this study examines the experiences of students attending The Kardinia School1 , an alternative education setting in Melbourne, Victoria. Data were gathered through interviews with students and parents, an online survey of students, a focus group with six staff, and approximately 200 hours of participant observation. The findings of this study highlight the significance of relational and affective processes in facilitating student educational engagement and inclusion. Themes of care, belonging and trust were central to students’ narratives about their experiences of both disengagement and re-engagement in school. Students experienced a shift in their views of themselves and their future as they moved from facing an uncertain future, to finding their place in a school where they felt accepted and cared for, a process many students described as ‘becoming somebody’. This positive experience of social inclusion at Kardinia helped students to build a sense of hope for their future in all aspects of social life – employment, family and community. The findings demonstrate the benefit of the social justice approach to education central to The Kardinia School model in creating an emotional and social foundation that is necessary for students to build and maintain engagement in education. Keywords: Alternative education, becoming somebody, belonging, care, engagement, hope, inclusion, marginalised, social inclusion, social justice, trust.
title: Proinflammatory receptor switch from Gαs to Gαi signaling in mixed RA synovial cells caused by the interaction of PDE4 and β-arrestin
Creators: name: Jenei-Lanzl, Zsuzsa
name: Zwingenberg, Janika
name: Lowin, Torsten
name: Anders, Sven
name: Straub, Rainer H.
Publisher: name: German Medical Science GMS Publishing House
Year: 2015
Subjects: subject: 610 Medical sciences; Medicine

description: Introduction: In chronic inflammation, prevention of cAMP degradation by phosphodiesterase-4 (PDE4) inhibition can be anti-inflammatory therapy. However, PDE4 inhibition was not effective in rheumatoid arthritis (RA). Recent studies demonstrated that PDE4/β-arrestin interaction at β-adrenoceptors[for full text, please go to the a.m. URL]
description: 43. Kongress der Deutschen Gesellschaft für Rheumatologie (DGRh); 29. Jahrestagung der Deutschen Gesellschaft für Orthopädische Rheumatologie (DGORh); 25. wissenschaftliche Jahrestagung der Gesellschaft für Kinder- und Jugendrheumatologie (GKJR)
Creating photon-number squeezed strong microwave fields by a Cooper-pair injection laser
Creators: name: Koppenhöfer, Martin
name: Leppäkangas, Juha
name: Marthaler, Michael
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The use of artificial atoms as an active lasing medium opens a way to construct novel sources of nonclassical radiation. An example is the creation of photon-number squeezed light. Here we present a design of a laser consisting of multiple Cooper-pair transistors coupled to a microwave resonator. Over a broad range of experimentally realizable parameters, this laser creates photon-number squeezed microwave radiation, characterized by a Fano factor $F \ll 1$, at a very high resonator photon number. We investigate the impact of gate-charge disorder in a Cooper-pair transistor and show that the system can create squeezed strong microwave fields even in the presence of maximum disorder.
description: extended and revised version, equivalent to the published article. 11 pages, 3 figures
Multifractal analysis of financial markets
Creators: name: Jiang, Zhi-Qiang
name: Xie, Wen-Jie
name: Zhou, Wei-Xing
name: Sornette, Didier
Publisher: name: arXiv
Year: 2018
Subjects: subject: Statistical Finance (q-fin.ST)
subject: FOS: Economics and business

description: Multifractality is ubiquitously observed in complex natural and socioeconomic systems. Multifractal analysis provides powerful tools to understand the complex nonlinear nature of time series in diverse fields. Inspired by its striking analogy with hydrodynamic turbulence, from which the idea of multifractality originated, multifractal analysis of financial markets has bloomed, forming one of the main directions of econophysics. We review the multifractal analysis methods and multifractal models adopted in or invented for financial time series and their subtle properties, which are applicable to time series in other disciplines. We survey the cumulating evidence for the presence of multifractality in financial time series in different markets and at different time periods and discuss the sources of multifractality. The usefulness of multifractal analysis in quantifying market inefficiency, in supporting risk management and in developing other applications is presented. We finally discuss open problems and further directions of multifractal analysis.
description: A review paper contains 145 pages
Electronic Supplementary Material from Resilience and stability of a pelagic marine ecosystem
Creators: name: Lindegren, Martin
name: Checkley, David M.
name: Ohman, Mark D.
name: Koslow, J. Anthony
name: Goericke, Ralf
Publisher: name: The Royal Society
Year: 2023
Subjects: subject: Ecology
subject: FOS: Biological sciences
subject: 60114 Systems Biology

description: Tables S1-S9; Figure S1-S6; Supplementary references
Intrinsic coherent acoustic phonons in indirect band gap semiconductors Si and GaP
Creators: name: Ishioka, Kunie
name: Rustagi, Avinash
name: Hoefer, Ulrich
name: Petek, Hrvoje
name: Stanton, Christopher J.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We report on the intrinsic optical generation and detection of coherent acoustic phonons at (001)-oriented bulk Si and GaP without metallic phonon transducer structures. Photoexcitation by a 3.1-eV laser pulse generates a normal strain pulse within the $\sim$100-nm penetration depth in both semiconductors. The subsequent propagation of the strain pulse into the bulk is detected with a delayed optical probe as a periodic modulation of the optical reflectivity. Our theoretical model explains quantitatively the generation of the acoustic pulse via the deformation potential electron-phonon coupling and detection in terms of the spatially and temporally dependent photoelastic effect for both semiconductors. Comparison with our theoretical model reveals that the experimental strain pulses have finite build-up times of 1.2 and 0.4 ps for GaP and Si, which are comparable with the time required for the photoexcited electrons to transfer to the lowest X valley through intervalley scattering. The deformation potential coupling related to the acoustic pulse generation for GaP is estimated to be twice as strong as that for Si from our experiments, in agreement with a previous theoretical prediction.
description: 9 pages, 8 figures
Institucionalización de la adopción
Creators: name: Arrieta Roncallo, Janneth
Publisher: name: Universidad de Cartagena
Year: 1979
Subjects: Derecho de familia
Adopción

description: Tesis (Abogado) -- Universidad de Cartagena. Facultad de Derecho y Ciencias Políticas, 1979.
description: Importancia del fenómeno jurídico de la adopción que crea derechos y obligaciones como los sucesorales, las alimentarias, las mutua ayuda, esperando crear verdader4os hogares con origen en la ley y la voluntad, ya que no lo es en la naturaleza humana.
Determinación del grado de compresibilidad y resistencia inconfinada de suelos cohesivos remoldeados
Creators: name: Ruiz Castro, Sergio
name: Yemail Barragan, Freddy
name: Covo Torres, Alvaro (Director)
Publisher: name: Universidad de Cartagena
Year: 2002
Subjects: Consolidación

description: Tesis (Ingeniero Civil). - - Universidad de Cartagena. Facultad de Ciencias E Ingeniería. Programa de Ingeniería Civil, 2002.
description: El presente estudio tiene por objeto determinar el grado de compactaciòn mínimo requerido para suelos cohesivos, de tal manera que soporten los esfuerzos a que van a ser sometidos bajo la aplicación de una carga; teniendo en cuenta las normas ASTM D4767 y los requerimientos del proyecto de ingeniería.
Client aptitude for cognitive behaviour therapy: the development and evaluation of a new measure
Creators: name: Lambrou, Maria
Publisher: name: La Trobe
Year: 2023

description: Submission note: Submitted in partial fulfilment of the requirements for the degree of Doctor of Clinical Psychology to the Department of Psychology and Public Health, School of Psychology and Counselling, La Trobe University, Victoria.

As an extension of Beck’s cognitive theory of psychopathology (Beck and Haigh, 2014; Beck et al., 1979) Cognitive Behaviour Therapy (CBT) proponents have theorised that change is enacted in CBT via cognitive change (Mennin, Ellard, Fresco, and Gross, 2013). Although clients arguably play the most important role in implementing this change process (Kazantzis, Dattilio, and Dobson, in press), research relating to individual differences and therapeutic change, which highlights the active role of clients, is limited (Bohart and Wade, 2013). The body of research conducted by the writer involved the development and subsequent psychometric evaluation of the Client Aptitude for Cognitive Behaviour Therapy (CACBT) observer scale, which was designed to examine client, in-session behavioural expressions of a range of cognitive abilities of posited relevance to CBT processes and outcomes. Grounded in the findings of the literature reviews that were conducted as a part of the present research, the CA-CBT scale assesses basic cognitive abilities, higher-order cognitive processes, aspects of emotional intelligence and interpersonal functioning Scale development and evaluation included thorough pilot testing and a stepped process of expert review, wherein 27 subject-matter experts provided feedback on a draft of the CA-CBT scale via an online questionnaire, using a process consistent with the Delphi method. In order to assess the development of the construct of interest over time, and its relationship to within- and post- treatment outcomes (i.e., next session and 0-, 6-, 12-, 18- , and 24- months follow-ups) the finalised CA-CBT scale was used to rate 49 early and 44 late sessions of a CBT for a depression condition from a previous component analysis (Jacobson et al. 1996). The results of this study indicated (i) that client aptitude significantly increased over the course of CBT, and (ii) that there were no significant relationships between early or late client aptitude and within- and post- treatment outcomes, after controlling for depression symptomatology and after accounting for multiple comparisons.
Highly sensitive macro-scale diamond magnetometer operated by dynamical decoupling sequence with coplanar waveguide resonator
Creators: name: Masuyama, Yuta
name: Mizuno, Kousuke
name: Ozawa, Hayato
name: Ishiwata, Hitoshi
name: Hatano, Yuji
name: Ohshima, Takeshi
name: Iwasaki, Takayuki
name: Hatano, Mutsuko
Publisher: name: arXiv
Year: 2018
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Ultimate sensitivity for quantum magnetometry using nitrogen-vacancy (NV) centers in diamond is limited by number of NV centers and coherence time. Microwave irradiation with a high and homogeneous power density for a large detection volume is necessary to achieve highly sensitive magnetometer. Here, we demonstrate a microwave resonator to enhance the power density of the microwave field and an optical system with a detection volume of 1.4e-3 mm$^3$. The strong microwave field enables us to achieve 48 ns Rabi oscillation which is sufficiently faster than the phase relaxation time of NV centers. This system combined with a decoupling pulse sequence, XY16, extends the spin coherence time (T2) up to 27 times longer than that with a spin echo method. Consequently, we obtained an AC magnetic field sensitivity of 10.8 pT/Hz$^{1/2}$ using the dynamical decoupling pulse sequence.
Few-electron atomic ions in non-relativistic QED: the Ground state energy
Creators: name: Turbiner, Alexander V.
name: Vieyra, Juan Carlos Lopez
name: Olivares-Pilon, Horacio
Publisher: name: arXiv
Year: 2018
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Following detailed analysis of relativistic, QED and mass corrections for helium-like and lithium-like ions with static nuclei for $Z \leq 20$ the domain of applicability of Non-Relativistic QED (NRQED) is localized for ground state energy. It is demonstrated that for both helium-like and lithium-like ions with $Z \leq 20$ the finite nuclear mass effects do not change 4-5 significant digits (s.d.), and the leading relativistic and QED effects leave unchanged 3-4 s.d. in the ground state energy. It is shown that the non-relativistic ground state energy can be interpolated with accuracy not less than 13 s.d. for $Z \leq 12$, and not less than 12 s.d. for $Z \leq 50$ for helium-like as well as for $Z \leq 20$ for lithium-like ions by a compact meromorphic function in $λ=\sqrt{Z-{Z_B}}$ ($Z_B$ is the 2nd critical charge, see {TLO:2016}), $P_9(λ)/Q_5(λ)$. It is found that the Majorana formula - a second degree polynomial in $Z$ with two free parameters - and a fourth degree polynomial in $λ$ (a generalization of the Majorana formula) reproduce the ground state energy of the helium-like and lithium-like ions for $Z \leq 20$ in the domain of applicability of NRQED, thus, at least, 3 s.d. It is noted that $\gtrsim 99.9\%$ of the ground state energy is given by the variational energy for properly optimized trial function of the form of (anti)-symmetrized product of three (six) screened Coulomb orbitals for two-(three) electron system with 3 (7) free parameters for $Z \leq 20$, respectively. It may imply that these trial functions are, in fact, {\it exact} wavefunctions in non-relativistic QED, thus, the NRQED effective potential can be derived. It is shown that the sum of relativistic and QED effects in leading approximation - 3 s.d. - for both 2 and 3 electron systems is interpolated by 4th degree polynomial in $Z$ for $Z \leq 20$.
description: 32 pages, 4(6) figures, 6 tables, 35 references, final version to be published at Annals of Physics