cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Political themes in Joseph Conrad’s Under Western Eyes and Thomas Mann’s Doktor Faustus
Creators: name: Cobley, Evelyn Margot
Publisher: name: University of British Columbia
Year: 2010

description: This thesis focuses on the political themes of Thomas Mann's Doktor Faustus and Joseph Conrad's Under Western Eyes; it explores in particular the similarities in their treatment of political material. Because of their distinct aims and concerns, art and politics approach social reality in different ways. Topical political discourse especially tends to simplify and systematize life, whereas literature retains and emphasizes its complexities and ambiguities. An examination of Thomas Mann's and Joseph Conrad's non-fictional writings and biographical background indicates that the two authors held political views which were often biased and simplistic. Their fiction, however, mirrors political reality in all its complexity. Doktor Faustus and Under Western Eyes present and dramatize political problems without offering solutions or one-sided views. Through Adrian Leverkühn and Razumov, the essentially demonic nature of the German and Russian national character is investigated. Leverkühn is the symbol and culmination of Germany's cultural history, and his pact with the devil is a metaphor for Germany's movement towards Nazism. Razumov is a typical Russian whose fate embodies the dilemma of a country torn between cynical autocracy and lawless revolution. However, Leverkühn’s and Razumov's involvement with the anti-rational and demonic is not unequivocally condemned. The novels also bring out forcibly the sterility and complacency of Western civilization. Western values are represented by the narrators, Zeitblom and the language teacher, whose criticism of Leverkühn and Razumov is always tinged with their own humanistic tradition. While Mann and Conrad offer an indictment of political systems which threaten the freedom of the individual, they also express a deep-seated scepticism of all political solutions.
The origin of the Guitar pulsar
Creators: name: Tetzlaff, Nina
name: Neuhaeuser, Ralph
name: Hohle, Markus M.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Among a sample of 140 OB associations and clusters, we want to identify probable parent associations for the Guitar pulsar (PSR B2224+65) which would then also constrain its age. For this purpose, we are using an Euler-Cauchy technique treating the vertical component of the galactic potential to calculate the trajectories of the pulsar and each association into the past. To include errors we use Monte-Carlo simulations varying the initial parameters within their error intervals. The whole range of possible pulsar radial velocities is taken into account during the simulations. We find that the Guitar pulsar most probably originated from the Cygnus OB3 association ~0.8 Myr ago inferring a current radial velocity of v_r~-30 km/s, consistent with the inclination of its bow shock.
description: 4 pages, 1 figure, 3 tables
Density and spin response function of a normal Fermi gas at unitarity
Creators: name: Stringari, S.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Using Landau theory of Fermi liquids we calculate the dynamic response of both a polarized and unpolarized normal Fermi gas at zero temperature in the strongly interacting regime of large scattering length. We show that at small excitation energies the {\it in phase} (density) response is enhanced with respect to the ideal gas prediction due to the increased compressibility. Viceversa, the {\it out of phase} (spin) response is quenched as a consequence of the tendency of the system to pair opposite spins. The long wavelength behavior of the static structure factor is explicitly calculated. The results are compared with the predictions in the collisional and superfluid regimes. The emergence of a spin zero sound solution in the unpolarized normal phase is explicitly discussed.
description: 4 pages, 2 figures
Synthetic strategies of new molecular
paramagnetic mechanically-interlocked
complexes
Creators: name: Casati, Costanza <1984>
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2011
Subjects: CHIM/06 Chimica organica

description: Supramolecular chemistry is a multidisciplinary field which impinges on other disciplines, focusing
on the systems made up of a discrete number of assembled molecular subunits. The forces
responsible for the spatial organization are intermolecular reversible interactions.
The supramolecular architectures I was interested in are Rotaxanes, mechanically-interlocked
architectures consisting of a "dumbbell shaped molecule", threaded through a "macrocycle" where
the stoppers at the end of the dumbbell prevent disassociation of components and catenanes, two or
more interlocked macrocycles which cannot be separated without breaking the covalent bonds.
The aim is to introduce one or more paramagnetic units to use the ESR spectroscopy to investigate
complexation properties of these systems cause this technique works in the same time scale of
supramolecular assemblies.
Chapter 1 underlines the main concepts upon which supramolecular chemistry is based, clarifying
the nature of supramolecular interactions and the principles of host-guest chemistry.
In chapter 2 it is pointed out the use of ESR spectroscopy to investigate the properties of organic
non-covalent assemblies in liquid solution by spin labels and spin probes. The chapter 3 deals with
the synthesis of a new class of p-electron-deficient tetracationic cyclophane ring, carrying one or
two paramagnetic side-arms based on 2,2,6,6-tetramethylpiperidine-N-oxyl (TEMPO) moiety.
In the chapter 4, the Huisgen 1,3-dipolar cycloaddition is exploited to synthesize rotaxanes having
paramagnetic cyclodextrins as wheels.
In the chapter 5, the catalysis of Huisgen’s cycloaddition by CB[6] is exploited to synthesize
paramagnetic CB[6]-based [3]-rotaxanes.
In the chapter 6 I reported the first preliminary studies of Actinoid series as a new class of
templates in catenanes’ synthesis. Being f-block elements, so having the property of expanding the
valence state, they constitute promising candidates as chemical templates offering the possibility to
create a complex with coordination number beyond 6.
Triple-level Model Inferred Collaborative Network Architecture for Video Deraining
Creators: name: Mu, Pan
name: Liu, Zhu
name: Liu, Yaohua
name: Liu, Risheng
name: Fan, Xin
Publisher: name: arXiv
Year: 2021
Subjects: subject: Image and Video Processing (eess.IV)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: Video deraining is an important issue for outdoor vision systems and has been investigated extensively. However, designing optimal architectures by the aggregating model formation and data distribution is a challenging task for video deraining. In this paper, we develop a model-guided triple-level optimization framework to deduce network architecture with cooperating optimization and auto-searching mechanism, named Triple-level Model Inferred Cooperating Searching (TMICS), for dealing with various video rain circumstances. In particular, to mitigate the problem that existing methods cannot cover various rain streaks distribution, we first design a hyper-parameter optimization model about task variable and hyper-parameter. Based on the proposed optimization model, we design a collaborative structure for video deraining. This structure includes Dominant Network Architecture (DNA) and Companionate Network Architecture (CNA) that is cooperated by introducing an Attention-based Averaging Scheme (AAS). To better explore inter-frame information from videos, we introduce a macroscopic structure searching scheme that searches from Optical Flow Module (OFM) and Temporal Grouping Module (TGM) to help restore latent frame. In addition, we apply the differentiable neural architecture searching from a compact candidate set of task-specific operations to discover desirable rain streaks removal architectures automatically. Extensive experiments on various datasets demonstrate that our model shows significant improvements in fidelity and temporal consistency over the state-of-the-art works. Source code is available at https://github.com/vis-opt-group/TMICS.
description: Accepted at IEEE Transactions on Image Processing
1963-1968. Dall'avvento dell'amministrazione di Lyndon B. Johnson al Trattato di Non-Proliferazione. gli Stati Uniti, la Francia, la NATO e l'Europa agli esordi della distensione. Storia di una "non-crisi" transatlantica e della riorganizzazione dell'Alleanza.
Creators: name: Organtini, Chiara <1979>
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2011
Subjects: M-STO/04 Storia contemporanea

description: The aim of this proposal is to explain the paradigm of the American foreign policy during the Johnson Administration, especially toward Europe, within the NATO framework, and toward URSS, in the context of the détente, just emerged during the decade of the sixties. During that period, after the passing of the J. F. Kennedy, President L. B. Johnson inherited a complex and very high-powered world politics, which wanted to get a new phase off the ground in the transatlantic relations and share the burden of the Cold war with a refractory Europe. Known as the grand design, it was a policy that needed the support of the allies and a clear purpose which appealed to the Europeans. At first, President Johnson detected in the problem of the nuclear sharing the good deal to make with the NATO allies. At the same time, he understood that the United States needed to reassert their leadeship within the new stage of relations with the Soviet Union. Soon, the “transatlantic bargain” became something not so easy to dealt with. The Federal Germany wanted to say a word in the nuclear affairs and, why not, put the finger on the trigger of the atlantic nuclear weapons. URSS, on the other hand, wanted to keep Germany down. The other allies did not want to share the onus of the defense of Europe, at most the responsability for the use of the weapons and, at least, to participate in the decision-making process. France, which wanted to detach herself from the policy of the United States and regained a world role, added difficulties to the manage of this course of action. Through the years of the Johnson’s office, the divergences of the policies placed by his advisers to gain the goal put the American foreign policy in deep water. The withdrawal of France from the organization but not from the Alliance, give Washington a chance to carry out his goal. The development of a clear-cut disarm policy leaded the Johnson’s administration to the core of the matter. The Non-proliferation Treaty signed in 1968, solved in a business-like fashion the problem with the allies. The question of nuclear sharing faded away with the acceptance of more deep consultative role in the nuclear affairs by the allies, the burden for the defense of Europe became more bearable through the offset agreement with the FRG and a new doctrine, the flexible response, put an end, at least formally, to the taboo of the nuclear age. The Johnson’s grand design proved to be different from the Kennedy’s one, but all things considered, it was more workable. The unpredictable result was a real détente with the Soviet Union, which, we can say, was a merit of President Johnson.
Multi Scale Investigation of Surface Topography of Ball Python (Python Regius) Shed Skin in Comparison to Human skin
Creators: name: Abdel-Aal, H. A.
name: Mansori, M. El
name: Mezghani, S.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Biological Physics (physics.bio-ph)
subject: FOS: Physical sciences

description: Constructing a surface that is an integral part of the function of tribosystems (deterministic surface) is an intriguing goal. Inspirations for such surfaces come from studying natural systems and deducing design rules. The major attraction is that natural systems, while functionally complex, are, in general, of optimized shape and performance. It is further believed that functional complexity of natural systems is what affords natural species to morph continuously to adapt with the operating environment. One bio-species that is of interest is the Ball Python. This is because such a species continuously slides against various surfaces, many of which are deemed tribologically hostile, without sustaining much damage. Much of the success of that species in adapting to its environment is attributed to surface design features. In that respect, studying these features and how do they contribute to the control of friction and wear is very attractive. This paper is a step in this direction. In this work we apply a multi scale surface characterization approach to study surface design features of the Python Regius. The focus is on those features that are typically used to assess the performance of high quality lubricating surfaces. To this end, topographical features are studied by SEM and through White Light Interferrometery (WLI). We probe the roughness of the surface on multi scale and as a function of location within the body. In addition we draw a comparison of these features to those of human skin.
IoT to monitor people flow in areas of public interest
Creators: name: Perri, Damiano
name: Simonetti, Marco
name: Bordini, Alex
name: Cimarelli, Simone
name: Gervasi, Osvaldo
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computers and Society (cs.CY)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: The unexpected historical period we are living has abruptly pushed us to loosen any sort of interaction between individuals, gradually forcing us to deal with new ways to allow compliance with safety distances; indeed the present situation has demonstrated more than ever how critical it is to be able to properly organize our travel plans, put people in safe conditions, and avoid harmful circumstances. The aim of this research is to set up a system to monitor the flow of people inside public places and facilities of interest (museums, theatres, cinemas, etc.) without collecting personal or sensitive data. Weak monitoring of people flows (i.e. monitoring without personal identification of the monitored subjects) through Internet of Things tools might be a viable solution to minimize lineups and overcrowding. Our study, which began as an experiment in the Umbria region of Italy, aims to be one of several answers to automated planning of people's flows in order to make our land more liveable. We intend to show that the Internet of Things gives almost unlimited tools and possibilities, from developing a basic information process to implementing a true portal which enables business people to connect with interested consumers.
description: International Conference on Computational Science and Its Applications, ICCSA 2021
Supplementary files from Three-dimensional geometric morphometric analysis of the skull of Protoceratops andrewsi supports a socio-sexual signalling role for the ceratopsian frill
Creators: name: Knapp, A.
name: Knell, R. J.
name: D. W. E. Hone
Publisher: name: The Royal Society
Year: 2021
Subjects: subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: 40308 Palaeontology (incl. Palynology)
subject: FOS: Earth and related environmental sciences

description: Additional plots, tables, and descriptive information for analyses.
Position reconstruction of acoustic sources with the AMADEUS Detector
Creators: name: Richardt, C.
name: Anton, G.
name: Graf, K.
name: Hoessl, J.
name: Katz, U.
name: Lahmann, R.
name: Neff, M.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: This article focuses on techniques for position reconstruction of acoustic point sources with the AMADEUS setup consisting of 36 acoustic sensors in the Mediterranean Sea. The direction reconstruction of an acoustic point source utilizes the information of the 6 small-volume hydrophone clusters of AMADEUS individually. Source position reconstruction is then done by combining the directional information of each cluster. The algorithms for direction and position reconstruction are explained and demonstrated using data taken in the deep sea.
description: 4 pages, 7 figures, to appear in the proceedings of the 3rd International Workshop on the Acoustic and Radio EeV Neutrino detection Activities, Rome, Italy
Initial-state temperature of light meson emission source from squared momentum transfer spectra in high-energy collisions
Creators: name: Wang, Qi
name: Liu, Fu-Hu
name: Olimov, Khusniddin K.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: Nuclear Experiment (nucl-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The squared momentum transfer spectra of light mesons, $π^0$, $π^+$, $η$, and $ρ^0$, produced in high-energy virtual photon-proton ($γ^{*} p$) $\rightarrow {\rm meson + nucleon}$ process in electron-proton ($ep$) collisions measured by the CLAS Collaboration are analyzed by the Monte Carlo calculations, where the transfer undergoes from the incident $γ^*$ to emitted meson or equivalently from the target proton to emitted nucleon. In the calculations, the Erlang distribution from a multi-source thermal model is used to describe the transverse momentum spectra of emitted particles. Our results show that the average transverse momentum ($\langle p_T\rangle$) and the initial-state temperature ($T_i$) increase from lower squared photon virtuality ($Q^2$) and Bjorken variable ($x_B$) to higher one. This renders that the excitation degree of emission source, which is described by $\langle p_T\rangle$ and $T_i$, increases with increasing of $Q^2$ and $x_B$.
description: 17 pages, 6 figures. Frontiers in Physics, accepted
Edging towards an understanding of CH/CH$_2$ on nano-diamonds: Regular and semi-regular polyhedra and diamond network models
Creators: name: Jones, A. P.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Nano-diamonds have been observed in only a handful of circumstellar regions $10-100$\,\tiny{ A.U.} from moderately bright stars ($T_{\rm eff} \sim 8,000-10,000$\,K). They have also been extracted from primitive meteorites; some of these are clearly pre-solar, that is to say that they formed far from the solar system and therefore traversed the interstellar medium, where they must exist but, because we see no evidence of them, must be extremely well hidden. Our goal is to understand if it is possible to constrain the sizes and shapes of nano-diamonds in circumstellar media using the observed ratio, [CH]/[CH$_2$], of their surface CH$_2$ and CH infrared bands at $\simeq 3.43\,μ$m and $\simeq 3.53\,μ$m, respectively. We calculated the CH and CH$_2$ abundances on nano-diamonds using two approaches. The first assumes regular and semi-regular polyhedra (tetrahedra, octahedra, and cubes and their truncated forms). The second uses a diamond bonding network to derive the structures of tetrahedral and octahedral particles, and their truncated variants, and also of spherical nano-diamonds. As a function of the particle size and shape, and for the two different calculation methods, we derived the relative abundance ratio [CH]/[CH$_2$], which can then be weighted by their laboratory-measured infrared band intensities. The two methods give good agreement and indicate that the spread in values, over the different particle forms, is more that an order of magnitude for any size. We conclude that the ratio [CH]/[CH$_2$], and their infrared band ratio, strongly depend upon particle size and shape. For a given shape or size, the ratio can vary by more than an order of magnitude. It may therefore be difficult to constrain nano-diamond sizes using the observed $3-4\,μ$m spectra alone. James Webb Space Telescope (JWST) mid-infrared spectra may help, but only if bands are size-specific.
description: 24 pages, 10 figures, 7 tables
Studio e sviluppo di un motore a 2 tempi diesel veloce di nuova concezione per applicazioni automobilistiche
Creators: name: De Marco, Carlo Arturo <1978>
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2008
Subjects: ING-IND/08 Macchine a fluido

description: The Department of Mechanical and Civil Engineering (DIMeC) of the University of Modena and Reggio Emilia is developing a new type of small capacity HSDI 2-Stroke Diesel engine (called HSD2), featuring a specifically designed combustion system, aimed to reduce weight, size and manufacturing costs, and improving pollutant emissions at partial load. The present work is focused on the analysis of the combustion and the scavenging process, investigated by means of a version of the KIVA-3V code customized by the University of Chalmers and modified by DIMeC. The customization of the KIVA-3V code includes a detailed combustion chemistry approach, coupled with a comprehensive oxidation mechanism for diesel oil surrogate and the modeling of turbulence/chemistry interaction through the PaSR (Partially Stirred Reactor) model.
A four stroke automobile Diesel engine featuring a very close bore size is taken as a reference, for both the numerical models calibration and for a comparison with the 2-Stroke engine. Analysis is carried out trough a comparison between HSD2 and FIAT 1300 MultiJet in several operating conditions, at full and partial load. Such a comparison clearly demonstrates the effectiveness of the two stroke concept in terms of emissions reduction and high power density. However, HSD2 is still a virtual engine, and experimental results are needed to assume the reliability of numerical results.
title: Second-look US tras RM de mama: revisión, seguimiento y actitud a seguir en lesiones con apariencia de baja probabilidad de malignidad por US
Creators: name: Cárdenas Rodríguez, María
Publisher: name: Sociedad Española de Radiología Médica
Year: 2014
Subjects: subject: Ultrasound
subject: MR
subject: Breast

description: Objetivo docente
Revisión del tema
Conclusiones
Bibliografía
description: Objetivo docente:
La RM de mama presenta una alta sensibilidad para el diagnóstico del Cáncer de mama.
Para el radiólogo,
muchas de las lesiones que se visulizan en la RM de mama resultan un verdadero desafio localizarlas por US.
Se ha realizado una revisión del...
title: Lesiones tumorales del hombro
Creators: name: Milán Rodríguez, María Milagros
Publisher: name: Sociedad Española de Radiología Médica
Year: 2014
Subjects: subject: Extremities
subject: Musculoskeletal bone
subject: Musculoskeletal soft tissue
subject: Conventional radiography
subject: CT
subject: MR
subject: Neoplasia

description: Objetivo docente
Revisión del tema
Conclusiones
Bibliografía
description: Objetivo docente:
El objetivo de nuestro trabajo es analizar la apariencia radiológica de los tumores que afectan al hombro,
incluyendo tanto las lesiones óseas como las que afectan a tejidos blandos,
y mostrar algunas de las características histológicas de los...
DETECTION AND ASSOCIATION OF SELECTED VIRULENCE ASSOCIATED GENES AND ANTIBIOTIC RESISTANCE GENES WITH PHYLOGENETIC GROUP IN AVIAN PATHOGENIC ESCHERICHIA COLI FROM COMMERCIAL CHICKENS IN NEPAL
Creators: name: REBANTA KUMAR BHATTARAI
name: HOM BAHADUR BASNET
name: ISHWARI PRASAD DHAKAL
name: BHUMINAND DEVKOTA
Publisher: name: Zenodo
Year: 2024
Subjects: Antibiotic Resistance Gene, Chicken, Colibacillosis, Phylogenetic Groups, Univariate Analysis, Virulence-Associated Genes.

description: Abstract

The poultry industry faces a significant challenge from avian pathogenic Escherichia coli (APEC), posing a threat to food safety chains and resulting in substantial financial losses. We aim to investigate the association of genotypic and phenotypic resistance with the phylogenetic group and virulence genotype in APEC isolated from clinical cases of colibacillosis in commercial broiler, layer, and breeder chickens. We used logistic regression to identify associations among resistance and susceptibility to antibiotic agents, virulence and phylogenetic groups of APEC isolates. The study revealed a significant association between resistance or susceptibility to antibiotic agents (neomycin, ceftriaxone, chloramphenicol, cotrimoxazole and doxycycline) with the phylogenetic groups of APEC isolates, particularly with a high association with phylogenetic group B1. The phylogenetic groups C, D, and E clade were associated with levofloxacin, cotrimoxazole, and doxycycline susceptibility. The most prevalent virulence associated genes (VAGs) (fimH, issa, traTa, sit.chr., kpsII, issb, and cvi.cva) in APEC were equally associated with all phylogenetic groups. The carriage of these prevalent genes were significantly associated with phylogenetic group D and E (16 gene out of 57 tested). Additionally, the carriage of sfa.foc was significantly associated with B2. qnrA genes and tetB genes were significantly associated with isolates positive for VAGs. Commercial broiler, layer, and breeder chickens in Nepal harbored APEC with varying susceptibility to the tested antimicrobials, with the majority being resistant to commonly used antibiotics. Most APEC isolates from these chickens may act as reservoirs for antibiotic resistance genes (ARGs), with the colistin resistant gene mcr1 being the most predominantly detected gene. The work highlights the importance of exploring the interconnections between virulence genotype, genetic background, and antimicrobial resistance (AMR) in APEC strains. It is noteworthy that ARGs and phenotypic resistance alone may not determine AMR due to their inverse relationship, indicating that these chickens could be potential reservoirs for antibiotic resistant APEC. Such insights are crucial for addressing challenges related intriguing VAGs, AMR of poultry production, as well as ensuring food safety and public health.
title: Adecuación de la RM de columna lumbar
Creators: name: Rebollo García, Natividad
Publisher: name: Sociedad Española de Radiología Médica
Year: 2014
Subjects: subject: Management
subject: Musculoskeletal spine
subject: MR
subject: Cost-effectiveness

description: Objetivos
Material y método
Resultados
Conclusiones
Bibliografía
description: Objetivos:
El objetivo general de nuestro trabajo es valorar la adecuación de la solicitud de la RM lumbar en paciente con clínica de lumbalgia realizadas en nuestra unidad. Como objetivos específicos: · Determinar si la RM lumbar cumple criterios de...
title: TRATAMIENTO LOCORREGIONAL DEL CARCINOMA HEPATOCELULAR INICIAL Y MUY INICIAL. Análisis de supervivencia.
Creators: name: Sanmartino, Susana
Publisher: name: Sociedad Española de Radiología Médica
Year: 2014
Subjects: subject: Neoplasia
subject: Chemoembolisation
subject: Ablation procedures
subject: Percutaneous
subject: Catheter arteriography
subject: Interventional vascular
subject: Interventional non-vascular
subject: Liver

description: Objetivos
Material y método
Resultados
Conclusiones
Bibliografía
description: Objetivos:
Analizar las características de los pacientes con CHC inicial y muy inicial,
según la clasificación para el tratamiento del carcinoma hepatocelular (CHC) del grupo del Hospital Clínico de Barcelona,
BCLC-A y BCLC-0,
tratados con ablación por...
GEOTECHNICAL GROUND INVESTIGATION AND PILE-FOUNDATION INTERACTION FOR HUB RIVER BRIDGE
Creators: name: Dr. AMANULLAH MARRI
name: Dr. GUL MUHAMMAD
name: SHAISTA JABEEN ABBASI
name: SHOAIB AKHTER
Publisher: name: Zenodo
Year: 2024
Subjects: Bridge Pile Analysis, Load Bearing Capacity On Rock Beds, Hub River Bridge, Pile Response to Loading, Composite Soil Conditions.

description: Abstract

This research paper presents a comprehensive geotechnical site investigation and analysis of pile-foundation interaction for the Hub River Bridge. The site under consideration is characterized by alluvial deposits overlying a continuous bedrock, with distinct variations in soil composition and scouring phenomena. The top 15.0 meters of soil on either abutment side comprises predominantly alluvial deposits, transitioning into weak sandstone from depths ranging between 15.0 and 45.0 meters. In the middle portion of the bridge, the alluvial deposit extends up to 5.0 meters, succeeded by weak sandstone reaching depths of 45.0 meters. The presence of scouring has been observed, indicating potential challenges in foundation stability. The proposed foundation depth is determined based on pile diameter considerations, ranging from 0.75 meters to 2.0 meters. The design parameters aim to accommodate a service load of 950 tons. The study incorporates a thorough analysis of the subsurface conditions, considering the variations in soil types and potential scouring effects. Additionally, the paper addresses the implications of different pile diameters on the foundation design, ensuring structural integrity and load-bearing capacity. The bridge piles undergo analysis and length determination using the All Pile software. This software facilitates a comprehensive examination of pile behaviour and foundation interaction, ensuring that the designed piles meet the specified load requirements. The utilization of All Pile software allows for a precise and efficient design process, considering the complex geological conditions and variations in soil types. The findings from this research contribute valuable insights into the geotechnical considerations and pile-foundation interaction for the Hub River Bridge, aiding in the development of optimal foundation designs for safe and resilient infrastructure in similar geological settings.
A derivation of nano-diamond optical constants: Here be nano-diamonds
Creators: name: Jones, A. P.
name: Ysard, Nathalie
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: % context {Nano-diamonds are an enticing and enigmatic dust component yet their origin is still unclear. They have been unequivocally detected in only a few astronomical objects, yet they are the most abundant of the pre-solar grains, both in terms of mass and number.} %aims {Our goal is to derive a viable set of nano-diamond optical constants and optical properties to enable their modelling in any type of astrophysical object where, primarily, the local (inter)stellar radiation field is well-determined.} % methods {The complex indices of refraction, $m(n,k)$, of nano-diamonds, constrained by available laboratory measurements, were calculated as a function of size, surface hydrogenation, and internal (dis)order, using the THEMIS a-C(:H) methodology optEC$_{\rm (s)}$(a).} % results {To demonstrate the utility of the optical properties (the efficiency factors $Q_{\rm ext}$, $Q_{\rm sca}$, and $Q_{\rm abs}$), calculated using the derived $m(n,k)$ data, we show that nano-diamonds could be abundant in the interstellar medium (ISM) and yet remain undetectable there.} % conclusions {The derived optical constants provide a means to explore the existence and viability of nano-diamonds in a wide range of astronomical sources. Here we show that up to a few percent of the available carbon budget could be hidden in the form of nano-diamonds in the diffuse ISM, in abundances comparable to the pre-solar nano-diamond abundances in primitive meteorites.}
description: 17 pages, 8 figures, 4 tables
Synthesis and characterization of implants for bone substitutions made of biomedical apatites containing silicon
Creators: name: Sprio, Simone <1970>
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2008
Subjects: CHIM/03 Chimica generale e inorganica

description: In the last decades the development of bone substitutes characterized by a superior biomimetism has become of particular interest, owing to the increasing economic and societal impact of the bone diseases.
In the present work of research the development of bone substitutes characterized by improved biomimetism, has been faced in a chemical, structural and morphological perspective.
From a chemical point of view, it has been developed the synthesis of hydroxyapatite powders, exhibiting multiple ionic substitutions in both cationic and anionic sites, so to simulate the chemical composition of the natural bone. Particular emphasis has been given to the effect of silicon on the chemical-physical and solubility properties of the obtained hydroxyapatites.
From a structural point of view, it has been developed the synthesis of ceramic composite materials, based on hydroxyapatite and calcium silicates, employed both as a reinforcing phase, to raise the mechanical strength of the composite compared to hydroxyapatite, and as a bioactive phase, able to increase the bioactivity properties of the whole ceramic.
Finally the unique morphological features of the bone were mimicked by taking inspiration by Nature, so that native wood structures were treated in chemical and thermal way to obtain hydroxyapatite porous materials characterized by the same morphology as the native wood.
The results obtained in the present work were positive in all the three different areas of investigation, so to cover the three different aspects of biomimetism, chemical, structural and morphological. Anyway, only at the convergence of the three different fields it is possible to find out the best solutions to develop the ideal bone-like scaffold. Thus, the future activity should be devoted to solve the problems at the borderline between the different research lines, which hamper this convergence and in consequence, the achievement of a bone scaffold able to mimic the various aspects exhibited by the bone tissue
A generalization of Apostol's Möbius functions of order k
Creators: name: Bege, Antal
Publisher: name: arXiv
Year: 2009
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 11N37; 11A25

description: Apostol's Mobius functions of order k are generalized to depend on a second integer parameter m. Asymptotic formulas are obtained for the partial sums of these generalized functions.
Opción Consultores National Survey: Uruguay March 2012
Creators: name: Opción Consultores, In Bogliaccini, Juan, And Queirolo Rosario Laboratorio De Opinión Pública And Redes Sociales En Uruguay Collection (Social Networks And Public Opinion Lab Collection)
Publisher: name: Roper Center for Public Opinion Research
Year: 2021

description: 2014 general election; vote for or against parties; Colorado Party; National Party; Frente Amplio (a leftist political coalition); Independent Party; vote for or against candidates; government priorities; trade relations with Argentina; public safety/crime; education; labor and retirement conditions; lower taxes; state reform; trade barriers imposed by Argentina and Brazil; lowering the age of criminal accountability; 2009 general election; José Mujica (Frente Amplio); Luis Lacalle Pou (National Party); Pedro Bordaberry (Colorado Party); Pablo Mieres (Independent Party); personal financial situation; the economy. National Agency for Research and Innovation (ANII) Collection.
Relativistic-flying laser focus by a laser-produced parabolic plasma mirror
Creators: name: Jeong, Tae Moon
name: Bulanov, Sergei V.
name: Valenta, Petr
name: Korn, Georg
name: Esirkepov, Timur Zh.
name: Koga, James K.
name: Pirozhkov, Alexander S.
name: Kando, Masaki
name: Bulanov, Stepan S.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: The question of electromagnetic field intensification towards the values typical for strong field Quantum Electrodynamics is of fundamental importance. One of the most promising intensification schemes is based on the relativistic-flying mirror concept, which shows that the electromagnetic radiation reflected by the mirror will be frequency up-shifted by a factor of 4 gamma^2 (gamma: the Lorentz factor of the mirror). In laser-plasma interactions, such a mirror travels with relativistic velocities and typically has a parabolic form, which is advantageous for light intensification. Thus, a relativistic-flying parabolic mirror reflects the counter-propagating radiation in a form of focused and flying electromagnetic wave with a high frequency. The relativistic-flying motion of the laser focus makes the electric and magnetic field distributions of the focus complicated, and the mathematical expressions describing the field distributions of the focus is important. We present analytical expressions describing the field distribution formed by an ideal flying mirror having a perfect reflectance over the entire surface and wavelength range. The peak field strength of an incident laser pulse with a center wavelength of lambda_0 and an effective beam radius of w_e is enhanced by a factor proportional to gamma^3 (w_e/lambda_0) in the relativistic limit. Electron-positron pair production is investigated in the context of invariant fields based on the enhanced electromagnetic field. The pair production rate under the relativistic-flying laser focus is modified by the Lorentz gamma-factor and the beam radius-wavelength ratio (w_e/lambda_0). We show that the electron-positron pairs can be created by colliding two counter-propagating relativistic-flying laser focuses in vacuum, each of which is formed when a 180 TW laser pulse is reflected by a relativistic-flying parabolic mirror with a gamma = 12.2.
A Study of Magnetized White Dwarf + Helium Star Binary Evolution to Type Ia Supernovae
Creators: name: Cui, Zhe
name: Li, Xiang-Dong
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The white dwarf (WD) + helium (He) star binary channel plays an important role in the single degenerate scenario for the progenitors of type Ia supernovae (SNe Ia). Previous studies on the WD + main sequence star evolution have shown that the magnetic fields of WDs may significantly influence their accretion and nuclear burning processes. In this work we focus on the evolution of magnetized WD + He star binaries with detailed stellar evolution and binary population synthesis (BPS) calculations. In the case of magnetized WDs, the magnetic fields may disrupt the inner regions of the accretion disk, funnel the accretion flow onto the polar caps, and even confine helium burning within the caps.We find that, for WDs with sufficiently strong magnetic fields, the parameter space of the potential SN Ia progenitor systems shrinks toward shorter orbital periods and lower donor masses compared with that in the non-magnetized WD case. The reason is that the magnetic confinement usually works with relatively high mass transfer rates, which can trigger strong wind mass loss from the WD, thus limiting the He-rich mass accumulation efficiency. The surviving companion stars are likely of low-mass at the moment of the SN explosions, which can be regarded as a possible explanation for the non-detection of surviving companions after the SNe or inside the SN remnants. However, the corresponding birthrate of Galactic SNe Ia in our high-magnetic models is estimated to be ~(0.08-0.13) * 10^{-3} yr^{-1}( ~0.17-0.28 * 10^{-3}yr^{-1} for the non-magnetic models), significantly lower than the observed Galactic SN Ia birthrate.
description: 25 pages, 15 figures
Log canonical thresholds on Gorenstein canonical del Pezzo surfaces
Creators: name: Park, Jihun
name: Won, Joonyeong
Publisher: name: arXiv
Year: 2009
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 14J26, 14J17

description: We classify all the effective anticanonical divisors on weak del Pezzo surfaces. Through this classification we obtain the smallest number among the log canonical thresholds of effective anticanonical divisors on a given Gorenstein canonical del Pezzo surface.
description: 28 pages. Minor mistakes have been corrected
THE IMPACT OF CORPORATE SOCIAL RESPONSIBILITY AND BRAND IMAGE ON STUDENTS' DECISION-MAKING IN VIETNAM'S HIGHER EDUCATION POST-COVID-19 PANDEMIC
Creators: name: BICH-HANG VUONG
name: HSIN-KUANG CHI
name: BA-ANH NGUYEN
name: DANG ANH LUC
name: HUY MACH TRAN
name: DO HOANG LINH
Publisher: name: Zenodo
Year: 2024
Subjects: Corporate Social Responsibility, Brand Image, Decision-Making, Higher Education, Vietnam, Post-COVID-19.

description: Abstract

This study investigates the critical role of corporate social responsibility (CSR) and brand image in influencing students' decision-making in Vietnam's higher education sector post-COVID-19. Given the intangible nature of educational services, prospective students often rely on specific criteria, with brand image being a significant factor in their school selection process. The research aims to illustrate how CSR initiatives not only attract students but also enhance their university experience, strengthen their resumes, and improve future career prospects. Using quantitative methods, data were collected through a structured survey distributed to high school and first-year university/college students across North, Central, and Southern Vietnam, with a significant focus on the rapidly developing Southern region, particularly Ho Chi Minh City. The analysis revealed a diverse respondent profile with a predominance of first-year university students. Structural Equation Modeling (SEM) results demonstrated significant positive impacts of CSR on brand image and on students' decision-making, while brand image itself significantly influenced students' choices. These findings underscore the importance of robust CSR strategies and a strong brand image in enhancing students' educational experiences and career readiness, providing valuable insights for higher education institutions in Vietnam to attract and retain students in the post-pandemic era.
Observing ram pressure at work in intermediate redshift clusters with MUSE: the case of Abell 2744and Abell 370
Creators: name: Moretti, A.
name: Radovich, M.
name: Poggianti, B. M.
name: Vulcani, B.
name: Gullieuszik, M.
name: Werle, A.
name: Bellhouse, C.
name: Bacchini, C.
name: Fritz, J.
name: Soucail, G.
name: Richard, J.
name: Franchetto, A.
name: Tomicic, N.
name: Omizzolo, A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Ram pressure stripping has been proven to be effective in shaping galaxy properties in dense environments at low redshift. The availability of MUSE observations of a sample of distant (z$\sim 0.3-0.5$) clusters has allowed to search for galaxies subject to this phenomenon at significant lookback times. In this paper we describe how we discovered and characterized 13 ram-pressure stripped galaxies in the central regions of two intermediate redshift (z$\sim$0.3-0.4) clusters, A2744 and A370, using the MUSE spectrograph. Emission line properties as well as stellar features have been analyzed to infer the presence of this gas--only stripping mechanism, that produces spectacular ionized gas tails (H$_α$ and even more astonishing [OII](3727,3729) departing from the main galaxy body. The inner regions of these two clusters reveal the predominance of such galaxies among blue star-forming cluster members, suggesting that ram-pressure stripping was even more effective at intermediate redshift than in today's Universe. Interestingly, the resolved [OII]/H$_α$ line ratio in the stripped tails is exceptionally high compared to that in the disks of these galaxies, (which is comparable to that in normal low-z galaxies), suggesting lower gas densities and/or an interaction with the hot surrounding ICM.
description: Accepted for publication on ApJ
EFFECTIVENESS OF PROGRESSIVE MUSCLE RELAXATION AND GUIDED IMAGERY ON STRESS DEPRESSION AND ANXIETY AMONG ELDERLY IN SELECTED OLD AGE HOMES AT KANYAKUMARI DISTRICT, TAMIL NADU
Creators: name: Dr. S. Sheeja
name: Dr. Annie Chandra S
Publisher: name: Zenodo
Year: 2024
Subjects: Geriatric Depression, Stress, Anxiety, Progressive Muscle Relaxation, Guided Imagery.

description: Abstract

Depression is one of the most common psychological conditions during the normal course of life with so much of losses and disappointments. The American Psychiatric Association's Diagnostic and Statistical Manual of Mental Disorders (DSM-IV) defines late-life depression as depressive symptoms in adults older than 65 years of age. They have also viewed that depression in later life has serious consequences including increased health costs, distress to caregivers, amplified disabilities, increased morbidity, and suicide.The present study aims to assess the effectiveness of progressive muscle relaxation and guided imagery on stress, depression, and anxiety among the elderly in selected old age homes in Kanyakumari district.The conceptual framework of the study was based on Roy’s adaptation model. The research approach used was quantitative and the research design was a quasi-experimental design with a non-equivalent control group. The dependent variables were stress, anxiety, and depression associated with the elderly and the independent variables were progressive muscle relaxation and guided imagery.The study was conducted in two selected old-age homes. A total of two hundred elderly (100 for each Group I and Group I) were chosen for this study.Data were collected using a self-administered questionnaire on Demographic variables and the Daily Record of Symptoms scale. Data analysis showed that after the intervention the mean knowledge score increased from 49.8±8.4to 78.8±8.5. Regarding the manifestations associated with PMS in post-test I and II, no symptoms were seen among 70.6% and 73.6% of subjects, respectively, and none had moderateor severe symptoms in the intervention group. However, in the control group, 80.45 subjects had mild, 18.4% had moderate and 0.6% had severe symptoms. It can be concluded that the lifestyle modification technique is one of the easy, cost-effective, and simple non-pharmacological interventions to solve the problems of subjects with PMS.
Binary Planetary Nebulae Nuclei towards the Galactic Bulge. I. Sample Discovery, Period Distribution and Binary Fraction
Creators: name: Miszalski, B.
name: Acker, A.
name: Moffat, A. F. J.
name: Parker, Q. A.
name: Udalski, A.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Binarity has been hypothesised to play an important, if not ubiquitous, role in the formation of planetary nebulae (PNe). Yet there remains a severe paucity of known binary central stars required to test the binary hypothesis and to place strong constraints on the physics of the common-envelope (CE) phase of binary stellar evolution. Large photometric surveys offer an unrivalled opportunity to efficiently discover many binary central stars. We have combined photometry from the OGLE microlensing survey with the largest sample of PNe towards the Galactic Bulge to systematically search for new binaries. A total of 21 periodic binaries were found thereby more than doubling the known sample. The orbital period distribution was found to be best described by CE population synthesis models when no correlation between primary and secondary masses is assumed for the initial mass ratio distribution. A comparison with post-CE white dwarf binaries indicates both distributions are representative of the true post-CE period distribution with most binaries exhibiting periods less than one day. An estimated close binary fraction of 12--21% is derived and is the first robust and independent validation of the prevailing 10--15% fraction estimated by Bond (2000). This suggests that binarity is not a precondition for the formation of PNe and that close binaries do not play a dominant role in the shaping of nebular morphologies. Systematic effects and biases of the survey are discussed with implications for future photometric surveys.
description: Accepted for publication in A&A