cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
A secure and auditable logging infrastructure based on a permissioned blockchain
Creators: name: Putz, Benedikt
name: Menges, Florian
name: Pernul, Günther
Publisher: name: Universität Regensburg
Year: 2019
Subjects: subject: ; Log management; Secure logging; Log auditing; Permissioned blockchain; Digital forensics
subject: 004 Informatik
subject: 330 Wirtschaft

description: Information systems in organizations are regularly subject to cyber attacks targeting confidential data or threatening the availability of the infrastructure. In case of a successful attack it is crucial to maintain integrity of the evidence for later use in court. Existing solutions to preserve integrity of log records remain cost-intensive or hard to implement in practice. In this work we present a new infrastructure for log integrity preservation which does not depend upon trusted third parties or specialized hardware. The system uses a blockchain to store non-repudiable proofs of existence for all generated log records. An open-source prototype of the resulting log auditing service is developed and deployed, followed by a security and performance evaluation. The infrastructure represents a novel software-based solution to the secure logging problem, which unlike existing approaches does not rely on specialized hardware, trusted third parties or modifications to the logging source. (C) 2019 Elsevier Ltd. All rights reserved.
description: The accepted manuscript will be available here 24 months after publication (Elsevier embargo). Until then, please retrieve the document from the DOI/ScienceDirect
ASSESSING THE INFLUENCE OF TRANSFORMATIONAL LEADERSHIP ON COMMITMENT AND CREATIVITY: A STUDY OF SELF-EFFICACY AS A MEDIATING FACTOR IN PRIVATE ENGLISH MEDIUM SCHOOLS IN BANGALORE, INDIA
Creators: name: SHIBU JACOB
name: Dr. SATHA PHONGSATHA
Publisher: name: Zenodo
Year: 2024
Subjects: Transformational Leadership, Self-Efficacy, Commitment and Creativity.

description: Abstract 

Leadership plays a pivotal role in the success of any organization, particularly in achieving its vision, mission, objectives, and goals. This principle holds true in educational settings as well. Previous studies have demonstrated that effective transformational leadership significantly boosts the confidence and efficacy of followers within a school environment. Such leadership not only connects followers' sense of self-efficacy to their work environment but also integrates the collective identity of the organization, fostering a committed and creative engagement among the staff. Transformational leaders serve as role models, inspiring their followers to emulate their behaviors and attitudes. They challenge their followers to take greater ownership of their efforts, encouraging them to understand their own strengths and weaknesses. This understanding allows leaders to align followers with tasks that enhance their effectiveness and contribute to the overall success of the organization. Given this context, the present study investigates the impact of transformational leadership on teacher effectiveness among faculty members in secondary and higher secondary schools in Bangalore, India. The study identifies a positive relationship between transformational leadership and self-efficacy, which in turn leads to increased creativity and commitment among teachers. The findings suggest that transformational leadership not only enhances individual teacher performance but also accelerates the overall innovation and dedication within the educational institution. Through this research, we aim to provide insights into how transformational leadership can be leveraged to improve teacher effectiveness, ultimately contributing to the advancement of educational standards and student outcomes in Bangalore.
On weak solutions for fourth-order problems involving the Leray-Lions type operators
Creators: name: Kefi, K.
name: Repovš, D. D.
name: Saoudi, K.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Analysis of PDEs (math.AP)
subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: 35J20, 35J60, 35G30, 35J35, 46E35

description: We investigate existence and multiplicity of weak solutions for fourth-order problems involving the Leray-Lions type operators in variable exponent spaces and improve a result of Bonanno and Chinnì (2011). We use variational methods and apply a multiplicity theorem of Bonanno and Marano (2010).
THE INFLUENCE OF DIGITAL MARKETING ON DECISION MAKING THROUGH PERCEIVED VALUE AND HOSPITAL BRAND IMAGE AT UNHAS MAKASSAR HOSPITAL
Creators: name: Andini Rezki Wulandari
name: Syahrir A. Pasinringi
name: Indahwaty Sidin
name: Irwandy
name: Nurmala Sari
name: Abdul Rahman Kadir
Publisher: name: Zenodo
Year: 2024
Subjects: Digital Marketing, Hospital Brand Image, Perceived Value, Patient Decision Making.

description: Abstract

Background. Healthcare in the digital era increasingly relies on digital marketing strategies to attract and retain patients. In the midst of increasingly fierce competition, hospitals need to build a strong brand image and create value felt by patients through various digital channels. Objective. This study aims to evaluate the influence of Digital Marketing on patient decision making at UNHAS Makassar Hospital, with Hospital Brand Image and Perceived Value as mediating variables. Method. The research method uses a quantitative approach with a cross-sectional design, data was collected from patients via questionnaires from 104 respondents. Data analysis was carried out using pathway analysis. Results. The research results show that Digital Marketing significantly influences the Hospital Brand Image with an estimated value of 0.643 and a Perceived Value of 0.678. Hospital Brand Image has a significant influence on decision making with an estimated value of 0.296, while Perceived Value has an influence of 0.289. Digital Marketing also directly influences decision making with an estimated value of 0.333. Apart from the direct influence, there is an indirect influence through Hospital Brand Image (estimate 0.190) and Perceived Value (estimate 0.196). Conclusion. These findings confirm that a strong Digital Marketing strategy can strengthen a hospital's brand image and increase the value perceived by patients, which ultimately influences their decisions.
Information loss in local dissipation environments
Creators: name: Metwally, Nasser
Publisher: name: arXiv
Year: 2009
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The sensitivity of entanglement to the thermal and squeezed reservoirs' parameters is investigated regarding entanglement decay and what is called sudden-death of entanglement, ESD, for a system of two qubit pairs. The dynamics of information is investigated by means of the information disturbance and exchange information. We show that for squeezed reservoir, we can keep both of the entanglement and information survival for a long time. The sudden death of information is seen in the case of thermal reservoir.
NOVEL TECHNIQUES FOR CONVERGENCE OF THE YOSIDA VARIATIONAL INCLUSION INCLUDING RESOLVENT EQUATION PROBLEM
Creators: name: ARIFUZZAMAN
name: S. S. IRFAN
name: SALEHIN FERDOUS KADER
name: ABDUR RAHMAN
name: FEEROZ BABU
Publisher: name: Zenodo
Year: 2024

description: Abstract

This work examines the issue of inclusion in a real-ordered Hilbert space, specifically focusing on the Yosida approximation operator, and XOR-operator. This topic is known as the Yosida variational inclusion problem. Our study primarily centers on examining the rapid convergence of the Yosida variational inclusion problem and the resolvent equation problem. Several algorithms have been enhanced to address both issues. We prove the existence and convergence of solutions for both problems. Two mathematical models are presented to demonstrate the efficacy of the approach.
Consequences of Pure Point Diffraction Spectra for Multiset Substitution Systems
Creators: name: Lee, Jeong-Yup
name: Moody, Robert V.
name: Solomyak, Boris
Publisher: name: arXiv
Year: 2009
Subjects: subject: Metric Geometry (math.MG)
subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: 52C23; 37B50

description: There is a growing body of results in the theory of discrete point sets and tiling systems giving conditions under which such systems are pure point diffractive. Here we look at the opposite direction: what can we infer about a discrete point set or tiling, defined through a primitive substitution system, given that it is pure point diffractive? Our basic objects are Delone multisets and tilings, which are self-replicating under a primitive substitution system of affine mappings with a common expansive map $Q$. Our first result gives a partial answer to a question of Lagarias and Wang: we characterize repetitive substitution Delone multisets that can be represented by substitution tilings using a concept of "legal cluster". This allows us to move freely between both types of objects. Our main result is that for lattice substitution multiset systems (in arbitrary dimensions) being a regular model set is not only sufficient for having pure point spectrum--a known fact--but is also necessary. This completes a circle of equivalences relating pure point dynamical and diffraction spectra, modular coincidence, and model sets for lattice substitution systems begun by the first two authors of this paper.
description: 36 pages
ANALYZING STUDENT LEARNING DIFFICULTIES, AND PROBLEM-SOLVING IN FIRST YEAR ELECTRICITY COURSES, CASE OF MOROCCAN UNIVERSITY
Creators: name: Mohammed Benyahya
name: Mohammed Bouziani Idrissi
name: Ali Ouasri
name: Hassan Zarrok
name: Nadia Dkhirech
name: Hassan Oudda
name: Abdelkader Zarrouk
Publisher: name: Zenodo
Year: 2024
Subjects: Electricity, Student Performance, Learning Difficulties, Problem Solving, Scientific Programs, Gender, Moroccan University.

description: Abstract

This study investigated academic challenges among 490 first-year Moroccan university students, focusing on their competency in solving electricity problems and the associated difficulties in applying mathematical concepts. Using a Conceptual Survey of Electricity and Magnetism-inspired performance tests, reliability was ensured through difficulty and discrimination indices, with a survey gathering qualitative insights. Over 35% scored below 4/10 in overall academic achievement, emphasizing the robust relationships between mathematics, electricity, and overall success. Specific hurdles have emerged in applying mathematical concepts to electricity problem solving. Multiple Correspondence Analysis revealed complex links between challenges in mathematics, physics, and the French language, influencing students' grasp of electricity concepts. The study concludes that gender minimally affects electricity module success, underscoring the need to address mathematical barriers to enhanced academic achievement.
Toponym Resolution on Historical Serial Sources
Creators: name: Sen, Dennis
Publisher: name: Zenodo
Year: 2021
Subjects: Toponym

description: Various challenges are present in the resolution of toponyms from historical serial sources, where problems range from spelling errors to incorrect information. In this thesis, such problems are identified, design decisions for a resolution system are made, applicable heuristics from all over literature are gathered and complemented, the implementation of such a system is described, the implemented system’s result is evaluated towards actual problems for toponym resolution, and the system is compared to other available systems regarding employed heuristics. It is found that Data Matching heuristics, in combination with heuristics from various works towards toponym resolution, are capable of solving such problems; depending on the set of data, above 90% recall, precision, and accuracy can be reached when allowing an error tolerance of 20km. To evaluate the system, gold standard files were produced on lines of historical serial sources dated 1870 and 1914, spanning 800 cases. It is assumed by the author that the system result is, in many cases, actually of higher quality than this identification by hand.
INVESTIGATING ATTITUDES, SUBJECTIVE NORMS, AND PERCEIVED BEHAVIOURAL CONTROL ON CHINESE UNIVERSITY STUDENTS' PURCHASE INTENTIONS TOWARDS AoFeI ANIME DERIVATIVES
Creators: name: YUESHI MA
name: Dr. JULIA WIRZA BINTI MOHD ZAWAWI
name: Dr. ZULKIFLI MOHAMAD
name: ZIJUN WANG
Publisher: name: Zenodo
Year: 2024
Subjects: Attitude, Subjective Norms, Perceived Behavior Control, AoFei Animation Derivatives, Purchase Intention.

description: Abstract

The success of AoFei anime is not only the result of the change of media technology, but also the inevitable trend of the development of mass communication. However, existing research lacks a discussion of the communication mechanism of AoFei anime derivatives, especially for the explanation of the purchase intention of secondary users. Therefore, this study aims to identify the effects of attitudes, subjective norms, and perceived behavioural control on Chinese college students' purchase intentions of AoFei anime derivatives based on the framework of the Theory of Plans and Behaviours. The sample for this quantitative study was 453 students from three universities in China. The instrument of the study was a structured questionnaire, and descriptive statistics and linear regression analyses were conducted through SPSS 27.0. The study concluded that attitudes, subjective norms, and perceived behavioural control significantly influenced Chinese university students' purchase intentions towards AoFei anime derivatives. Attitude had the highest level of influence, followed by perceived behavioural control, and subjective norms had the lowest. The structure of this study helps to extend the TPB framework and provides effective suggestions for relevant audiences who love anime works.
The B-L/Electroweak Hierarchy in Heterotic String and M-Theory
Creators: name: Ambroso, Michael
name: Ovrut, Burt
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: E8 x E8 heterotic string and M-theory, when compactified on a Calabi-Yau threefold admitting an SU(4) vector bundle with Wilson lines, can give rise to the exact MSSM spectrum with three right-handed neutrino chiral superields, one per family. Rank preserving Wilson lines require that the standard model group be augmented by a gauged U(1)_B-L. Since there are no fields in this theory for which 3(B-L) is an even, non-zero integer, the gauged B-L symmetry must be spontaneously broken at a low scale, not too far above the electroweak scale. It is shown that in these heterotic standard models, the B-L symmetry can be broken, with a phenomenologically viable B-L/electroweak hierarchy, by at least one right-handed sneutrino acquiring a vacuum expectation value. This is explicitly demonstrated, in a specific region of parameter space, using a renormalization group analysis and soft supersymmetry breaking operators. The vacuum state is shown to be a stable, local minimum of the potential and the resultant hierarchy is explicitly presented in terms of tan[beta].
description: 16 pages; typos fixed, analysis generalized
prose: A Python framework for modular astronomical images processing
Creators: name: Garcia, Lionel J.
name: Timmermans, Mathilde
name: Pozuelos, Francisco J.
name: Ducrot, Elsa
name: Gillon, Michaël
name: Delrez, Laetitia
name: Wells, Robert D.
name: Jehin, Emmanuël
Publisher: name: arXiv
Year: 2021
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: To reduce and analyze astronomical images, astronomers can rely on a wide range of libraries providing low-level implementations of legacy algorithms. However, combining these routines into robust and functional pipelines requires a major effort which often ends up in instrument-specific and poorly maintainable tools, yielding products that suffer from a low-level of reproducibility and portability. In this context, we present prose, a Python framework to build modular and maintainable image processing pipelines. Built for astronomy, it is instrument-agnostic and allows the construction of pipelines using a wide range of building blocks, pre-implemented or user-defined. With this architecture, our package provides basic tools to deal with common tasks such as automatic reduction and photometric extraction. To demonstrate its potential, we use its default photometric pipeline to process 26 TESS candidates follow-up observations and compare their products to the ones obtained with AstroImageJ, the reference software for such endeavors. We show that prose produces light curves with lower white and red noise while requiring less user interactions and offering richer functionalities for reporting.
Production of heavy isotopes in transfer reactions by collisions of $^{238}$U+$^{238}$U
Creators: name: Feng, Zhao-Qing
name: Jin, Gen-Ming
name: Li, Jun-Qing
Publisher: name: arXiv
Year: 2010
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The dynamics of transfer reactions in collisions of two very heavy nuclei $^{238}$U+$^{238}$U is studied within the dinuclear system (DNS) model. Collisions of two actinide nuclei form a super heavy composite system during a very short time, in which a large number of charge and mass transfers may take place. Such reactions have been investigated experimentally as an alternative way for the production of heavy and superheavy nuclei. The role of collision orientation in the production cross sections of heavy nuclides is analyzed systematically. Calculations show that the cross sections decrease drastically with increasing the charged numbers of heavy fragments. The transfer mechanism is favorable to synthesize heavy neutron-rich isotopes, such as nuclei around the subclosure at N=162 from No (Z=102) to Db (Z=105).
description: 4 pages, 4 figures
Dynamic thermal performance of building components and application to the experimental and theoretical analysis of a ventilated façade
Creators: name: Marinosci, Cosimo <1974>
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2011
Subjects: ING-IND/11 Fisica tecnica ambientale

description: The general aim of this work is to contribute to the energy performance assessment of ventilated
façades by the simultaneous use of experimental data and numerical simulations.
A significant amount of experimental work was done on different types of ventilated façades with
natural ventilation. The measurements were taken on a test building.
The external walls of this tower are rainscreen ventilated façades. Ventilation grills are located at
the top and at the bottom of the tower.
In this work the modelling of the test building using a dynamic thermal simulation program (ESP-r)
is presented and the main results discussed.
In order to investigate the best summer thermal performance of rainscreen ventilated skin façade a
study for different setups of rainscreen walls was made. In particular, influences of ventilation grills,
air cavity thickness, skin colour, skin material, orientation of façade were investigated.
It is shown that some types of rainscreen ventilated façade typologies are capable of lowering the
cooling energy demand of a few percent points.
New molecular approaches to control rhabdomyosarcoma onset and metastasis in preclinical systems
Creators: name: Ianzano, Marianna Lucia <1982>
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2011
Subjects: MED/04 Patologia generale

description: Rhabdomyosarcoma is the most common soft tissue sarcoma of childhood. The aim of this study was to identify molecular events involved in rhabdomyosarcoma onset for the development of new therapeutic approaches against specific molecular targets. 
 BALB-p53neu mice develop pelvic rhabdomyosarcoma and combines the activation of HER-2/neu oncogene with the inactivation of an allele of p53 oncosuppressor gene. 
Gene expression profiling led to the identification of genes potentially involved in rhabdomyosarcoma genesis and therefore of candidate targets. The pattern of expression of p53, HER-2/neu, CDKN2A/p19ARF and IGF-2 suggested that these alterations might be involved in gender-, site- and strain-specific development of rhabdomyosarcoma. Other genes such as CDKN1A/p21 might be involved. The role of IGF-2, CDKN2A/p19ARF and CDKN1A/p21 in tumor growth was investigated with siRNA in murine rhabdomyosarcoma cells. Silencing of p19ARF and p21 induced inhibition of growth and of migration ability, indicating a possible pro-tumor and pro-metastatic role in rhabdomyosarcoma in absence of p53. In addition the autocrine IGF-2/IGF-1R loop found in early phases of cancer progression strengthens its key role in sustaining rhabdomyosarcoma growth. 
As rhabdomyosarcoma displays defective myogenic differentiation, a therapeutic approach aimed at enhancing myogenic differentiation of rhabdomyosarcoma cells. Forced expression of myogenin was able to restore myogenic differentiation, significantly reduced cell motility and impaired tumor growth and metastatic spread. IL-4 treatment increased rhabdomyosarcoma cell growth, decreased myogenin expression and promoted migration of cells lacking myogenin.
Another approach was based on small kinase inhibitors. Agents specifically targeting members of the HER family (Lapatinib), of the IGF system (NVP-AEW541) or downstream signal transducers (NVP-BEZ235) were investigated in vitro in human rhabdomyosarcoma cell lines as therapeutic anti-tumor and anti-metastatic tools. The major effects were obtained with NVP-BEZ235 treatment that was able to strongly inhibit cell growth in vitro and showed anti-metastatic effects in vivo.
Greedy navigational cores in the human brain
Creators: name: heszberger, Zalan
name: Majdan, Andras
name: Biro, Andras
name: Gulyas, Andras
name: Balazs, Laszlo
name: Nemeth, Vilmos
name: Biro, Jozsef
Publisher: name: arXiv
Year: 2021
Subjects: subject: Biological Physics (physics.bio-ph)
subject: FOS: Physical sciences

description: Greedy navigation/routing plays an important role in geometric routing of networks because of its locality and simplicity. This can operate in geometrically embedded networks in a distributed manner, distances are calculated based on coordinates of network nodes for choosing the next hop in the routing. Based only on node coordinates in any metric space, the Greedy Navigational Core (GNC) can be identi ?ed as the minimum set of links between these nodes which provides 100% greedy navigability. In this paper we perform results on structural greedy navigability as the level of presence of Greedy Navigational Cores in structural networks of the Human Brain.
Hungry hosts? Refugee camps and host community nutritional outcomes in subSaharan Africa
Creators: name: Anti, Sebastian
name: Salemi, Colette
name: Anti, Sebastian
name: Salemi, Colette
Publisher: name: Unknown
Year: 2021
Subjects: subject: Food Security and Poverty
subject: Refugee impacts
subject: Regional migration
subject: nutrition and food security

description: We examine nutritional outcomes in host communities exposed to refugee camps within a multi-country difference-in-differences framework across sub-Saharan Africa (SSA). Our study uses new spatially explicit data on refugee camps in SSA merged with the Demographic and Health Surveys to estimate the cross-country average treatment effect of camps. To test against bias in the coefficients of interest under staggered treatment timing, we use a diagnostic test to evaluate treatment effect homogeneity. We find that being within 10 kilometers of a camp decreases children’s weight-for-age z-scores by 10 percent of the sample mean. Children with married household heads experience improved nutrition outcomes near camps. We consider adult loss of employment and worsening child health as explanatory mechanisms: we find no significant evidence of worsening child health or a reduction in employment opportunities. We argue that rising child malnutrition among hosts is due to the changing composition of the host population or to price shocks under localized price dispersal.
description: Job Market Paper - University of Minnesota, Department of Applied Economics, PhD Program
Sustainability indicators for environmental management and decision making
Creators: name: Benini, Lorenzo <1982>
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2011
Subjects: FIS/07 Fisica applicata (a beni culturali, ambientali, biologia e medicina)

description: The general objective of this research is to explore theories and methodologies of sustainability indicators, environmental management and decision making disciplines with the operational purpose of producing scientific, robust and relevant information for supporting system understanding and decision making in real case studies. Several tools have been applied in order to increase the understanding of socio-ecological systems as well as providing relevant information on the choice between alternatives. These tools have always been applied having in mind the complexity of the issues and the uncertainty tied to the partial knowledge of the systems under study. Two case studies with specific application to performances measurement (environmental performances in the case of the K8 approach and sustainable development performances in the case of the EU Sustainable Development Strategy) and a case study about the selection of sustainable development indicators amongst Municipalities in Scotland, are discussed in the first part of the work. In the second part of the work, the common denominator among subjects consists in the application of spatial indices and indicators to address operational problems in land use management within the territory of the Ravenna province (Italy). The main conclusion of the thesis is that a ‘perfect’ methodological approach which always produces the best results in assessing sustainability performances does not exist. Rather, there is a pool of correct approaches answering different evaluation questions, to be used when methodologies fit the purpose of the analysis. For this reason, methodological limits and conceptual assumptions as well as consistency and transparency of the assessment, become the key factors for assessing the quality of the analysis.
Asymmetric aminocatalysis: a modern strategy for molecules, challenges and life
Creators: name: Pesciaioli, Fabio <1982>
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2011
Subjects: CHIM/06 Chimica organica

description: The studies conducted during my Phd thesis were focused on two different directions:

1. In one case we tried to face some long standing problems of the asymmetric aminocatalysis as the activation of encumbered carbonyl compounds and the control of the diastereoisomeric ratio in the diastero- and enantioselective construction of all carbon substituted quaternary stereocenters adjacent a tertiary one. In this section (Challenges) was described the asymmetric aziridination of ,-unsaturated ketones, the activation of ,-unsaturated -branched aldehydes and the Michael addition of oxindoles to enals and enones.
For the activation via iminium ion formation of sterically demanding substrates, as ,-unsaturated ketones and ,-unsaturated -branched aldehydes, we exploited a chiral primary amine in order to overcome the problem of the iminium ion formation between the catalyst and encumbered carbonylic componds.
For the control of diastereoisomeric ratio in the diastero- and enantioselective construction of all carbon substituted quaternary stereocenters adjacent a tertiary one we envisaged that a suitable strategy was the Michael addition to 3 substituted oxindoles to enals activated via LUMO-lowering catalysis.
In this synthetic protocol we designed a new bifunctional catalyst with an amine moiety for activate the aldehyde and a tioureidic fragment for direct the approach of the oxindole.
This part of the thesis (Challenges) could be considered pure basic research, where the solution of the synthetic problem was the goal itself of the research.

2. In the other hand (Molecules) we applied our knowledge about the carbonylic compounds activation and about cascade reaction to the synthesis of three new classes of spirooxindole in enantiopure form.
The construction of libraries of these bioactive compounds represented a scientific bridge between medicinal chemistry or biology and the asymmetric catalysis.
The effect of the energy functional on the pasta-phase properties of catalysed neutron stars
Creators: name: Thi, H. Dinh
name: Fantina, A. F.
name: Gulminelli, F.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Nuclear pasta, that is an inhomogeneous distribution of nuclear matter characterised by non-spherical clustered structures, is expected to occur in a narrow spatial region at the bottom of the inner crust of neutron stars, but the width of the pasta layer is strongly model dependent. In the framework of a compressible liquid-drop model, we use Bayesian inference to analyse the constraints on the sub-saturation energy functional and surface tension imposed by both ab-initio chiral perturbation theory calculations and experimental measurements of nuclear masses. The posterior models are used to obtain general predictions for the crust-pasta and pasta-core transition with controlled uncertainties. A correlation study allows extracting the most influential parameters for the calculation of the pasta phases. The important role of high-order empirical parameters and the surface tension is underlined.
description: 15 pages, 11 figures. Contribution to the EPJ A topical issue "CompOSE: a repository for Neutron Star Equations of State and Transport Properties"
Deeply Virtual Compton Scattering and its Beam Charge Asymmetry in e^\pm p Collisions at HERA
Creators: name: H1 Collaboration
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: A measurement of elastic deeply virtual Compton scattering gamma* p -> gamma p using e^+ p and e^- p collision data recorded with the H1 detector at HERA is presented. The analysed data sample corresponds to an integrated luminosity of 306 pb^-1, almost equally shared between both beam charges. The cross section is measured as a function of the virtuality Q^2 of the exchanged photon and the centre-of-mass energy W of the gamma* p system in the kinematic domain 6.5 < Q^2 < 80 GeV^2, 30 < W < 140 GeV and |t| < 1 GeV^2, where t denotes the squared momentum transfer at the proton vertex. The cross section is determined differentially in t for different Q^2 and W values and exponential t-slope parameters are derived. Using e^+ p and e^- p data samples, a beam charge asymmetry is extracted for the first time in the low Bjorken x kinematic domain. The observed asymmetry is attributed to the interference between Bethe-Heitler and deeply virtual Compton scattering processes. Experimental results are discussed in the context of two different models, one based on generalised parton distributions and one based on the dipole approach.
description: Revised version, accepted by journal, 21 pages, 6 figures, 4 tables
On the Origin of Gamma-ray Flares from Bright Fermi Blazars
Creators: name: Paliya, Vaidehi S.
name: Boettcher, Markus
name: Gurwell, Mark
name: Stalin, C. S.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The origin of gamma-ray flares observed from blazars is one of the major mysteries in jet physics. We have attempted to address this problem following a novel spectral energy distribution (SED) fitting technique that explored the flaring patterns identified in the broadband SEDs of two gamma-ray bright blazars 3C 279 (z=0.54) and 3C 454.3 (z=0.86), using near-simultaneous radio-to-gamma-ray observations. For both sources, the gamma-ray flux strongly correlates with the separation of the SED peaks and the Compton dominance. We propose that spectral hardening of the radiating electron population and/or enhancement of the Doppler factor can naturally explain these observations. In both cases, magnetic reconnection may play a pivotal role in powering the luminous gamma-ray flares.
description: ApJS, in press
Ethics-Based Auditing of Automated Decision-Making Systems: Intervention Points and Policy Implications
Creators: name: Mokander, Jakob
name: Axente, Maria
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computers and Society (cs.CY)
subject: FOS: Computer and information sciences
subject: C.4; C.5; J.2; K.4; K.5; K.6

description: Organisations increasingly use automated decision-making systems (ADMS) to inform decisions that affect humans and their environment. While the use of ADMS can improve the accuracy and efficiency of decision-making processes, it is also coupled with ethical challenges. Unfortunately, the governance mechanisms currently used to oversee human decision-making often fail when applied to ADMS. In previous work, we proposed that ethics-based auditing (EBA), i.e. a structured process by which ADMS are assessed for consistency with relevant principles or norms, can (a) help organisations verify claims about their ADMS and (b) provide decision-subjects with justifications for the outputs produced by ADMS. In this article, we outline the conditions under which EBA procedures can be feasible and effective in practice. First, we argue that EBA is best understood as a 'soft' yet 'formal' governance mechanism. This implies that the main responsibility of auditors should be to spark ethical deliberation at key intervention points throughout the software development process and ensure that there is sufficient documentation to respond to potential inquiries. Second, we frame ADMS as parts of larger socio-technical systems to demonstrate that to be feasible and effective, EBA procedures must link to intervention points that span all levels of organisational governance and all phases of the software lifecycle. The main function of EBA should therefore be to inform, formalise, assess, and interlink existing governance structures. Finally, we discuss the policy implications of our findings. To support the emergence of feasible and effective EBA procedures, policymakers and regulators could provide standardised reporting formats, facilitate knowledge exchange, provide guidance on how to resolve normative tensions, and create an independent body to oversee EBA of ADMS.
description: Artificial Intelligence, Auditing, Automated Decision-Making, Ethics, Governance, Policy, Sociotechnical systems
ROS generate dalle NAD(P)H ossidasi nella segnalazione redox in linee cellulari leucemiche
Creators: name: Vieceli Dalla Sega, Francesco <1979>
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2011
Subjects: BIO/10 Biochimica

description: Discovery of  the Nox family has led to the concept that ROS are “intentionally” generated and are biologically functional in various cell types. Over the last decades, ROS have been shown to be involved in several physiological and pathological processes and ROS producing enzymes have been suggested as a target for drug development. The mechanism involved in the prosurvival effect of cytokines on the human acute myeloid leukaemia cell lines M07e and B1647 is investigated. A decrease in intracellular reactive oxygen species (ROS) content, glucose transport activity and cell survival was observed in the presence of inhibitors of plasma membrane ROS sources, such as DPI and apocynin, and by small interference RNA for NOX2 in M07e cells. Furthermore, Nox generated ROS are required to sustain B1647 cell viability and proliferation; in fact, antioxidants such as EUK-134 or Nox inhibitors and siRNA direct cells to apoptotic cell death, suggesting that manipulation of cellular NOX2 and NOX4 could affect survival of leukemic cells. Moreover, hydrogen peroxide has been long thought to be freely diffusible but recent evidence suggest that specific mammalian aquaporin homologues (AQP8) possess the capacity to channel H2O2 across membrane. In this thesis is shown that inhibition of aquaporins diminishes intracellular ROS accumulation either when H2O2 is produced by Nox enzymes or when is added exogenously to the medium. These data suggest that specific inhibition of Nox enzymes and AQP8 could be an interesting novel anti-leukemic strategy.
Supplementary methods, analyses, figures and tables from The neural correlates of grandmaternal caregiving
Creators: name: Rilling, James K.
name: Gonzalez, Amber
name: Lee, Minwoo
Publisher: name: The Royal Society
Year: 2021
Subjects: subject: Neuroscience
subject: Evolutionary Biology
subject: FOS: Biological sciences

description: This file provides supplementary methods, analyses, tables and figures
CHECKLIST OF FUNGAL SPECIES ASSOCIATED WITH SAFFRON PLANTS (CROCUS SATIVUS L.)
Creators: name: Najoua Mouden
name: Samah Ourras
name: Mhammed Elouark
name: Ismail El Aymani
name: Moulay Abdelaziz El Alaoui
name: Amina Ouazzani Touhami
name: Allal Douira
Publisher: name: Zenodo
Year: 2024
Subjects: Inventory, Endophytes, Fungi, Saffron, Morocco.

description: Abstract

Over the past years, a wealth of studies has shown that saffron plants (Iridaceae) are subjected to intense fungal colonisation. Saffron (Crocus sativus) are perennial, monocotyledonous plants mainly restricted to the temperate areas and represents an economically important crop producing the world’s costliest spice. The inventory of fungi associated with saffron is an essential step to explore the fungal diversity and fill the gaps in knowledge of diverse and understudied assemblage related to saffron. In this regard, the data collected from the literature for the diversity of saffron fungi have been revisited and updated here to realize a first inventory list on fungal organisms globally reported. It includes 137 species belonging to four phylums Ascomycota, Basidiomycota, Mucoromycota and Oomycota. Fusarium is the most common genus, with 26 species, followed by Aspergillus and Penicillium, with 15 and 17 species, respectively. The bulk of mycobiome often found in the cormosphere, roots, and rhizosphee suggest they might be involved in corms diseases development, however certains are known to be opportunists and others have a key role in corm protection.  In conclusion, throughout this bibliographic inventory, we can point out a great diversity of fungi distinguishing the mycoflora of saffron that grow under appropriate environmental conditions and alerts us to the presence of several sources of infection in saffron fields for this perennial plant.
Astrophysics of dense quark matter in compact stars
Creators: name: Sedrakian, Armen
Publisher: name: arXiv
Year: 2009
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Massive neutron stars may harbor deconfined quark matter in their cores. I review some recent work on the microphysics and the phenomenology of compact stars with cores made of quark matter. This includes the equilibrium and stability of non-rotating and rapidly rotating stars, gravitational radiation from deformations in their quark cores, neutrino radiation and dichotomy of fast and slow cooling, and pulsar radio-timing anomalies.
description: 10 pages, 4 figures, presented at the XXVI Max Born Symposium ``Three days of strong interactions'', Wroclaw, Poland, 9-11 July, 2009
Path Integral Complexity and Kasner singularities
Creators: name: Caputa, Pawel
name: Das, Diptarka
name: Das, Sumit R.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We explore properties of path integral complexity in field theories on time dependent backgrounds using its dual description in terms of Hartle-Hawking wavefunctions. In particular, we consider boundary theories with time dependent couplings which are dual to Kasner-AdS metrics in the bulk with a time dependent dilaton. We show that holographic path integral complexity decreases as we approach the singularity, consistent with earlier results from holographic complexity conjectures. Furthermore, we find examples where the complexity becomes universal i.e., independent of the Kasner exponents, but the properties of the path integral tensor networks depend sensitively on this data.
description: 33 pages, 4 figures
A New Application of the Astrometric Method to Break Severe Degeneracies in Binary Microlensing Events
Creators: name: Chung, Sun-Ju
name: Park, Byeong-Gon
name: Ryu, Yoon-Hyun
name: Humphrey, Andrew
Publisher: name: arXiv
Year: 2009
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: When a source star is microlensed by one stellar component of a widely separated binary stellar components, after finishing the lensing event, the event induced by the other binary star can be additionally detected. In this paper, we investigate whether the close/wide degeneracies in binary lensing events can be resolved by detecting the additional centroid shift of the source images induced by the secondary binary star in wide binary lensing events. From this investigation, we find that if the source star passes close to the Einstein ring of the secondary companion, the degeneracy can be easily resolved by using future astrometric follow-up observations with high astrometric precision. We determine the probability of detecting the additional centroid shift in binary lensing events with high magnification. From this, we find that the degeneracy of binary lensing events with a separation of $\lesssim 20.0$ AU can be resolved with a significant efficiency. We also estimate the waiting time for the detection of the additional centroid shift in wide binary lensing events. We find that for typical Galactic lensing events with a separation of $\lesssim 20.0$ AU, the additional centroid shift can be detected within 100 days, and thus the degeneracy of those events can be sufficiently broken within a year.
description: 13 pages, 4 figures, 1 table, accepted for publication in ApJ
Quantum state transfer through a qubit network with energy shifts and fluctuations
Creators: name: Casaccino, Andrea
name: Lloyd, Seth
name: Mancini, Stefano
name: Severini, Simone
Publisher: name: arXiv
Year: 2009
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study quantum state transfer through a qubit network modeled by spins with XY interaction, when relying on a single excitation. We show that it is possible to achieve perfect transfer by shifting (adding) energy to specific vertices. This technique appears to be a potentially powerful tool to change, and in some cases improve, transfer capabilities of quantum networks. Analytical results are presented for all-to-all networks and all-to-all networks with a missing link. Moreover, we evaluate the effect of random fluctuations on the transmission fidelity.
description: 6 pages, 3 figures
Quantum properties of the codirectional three-mode Kerr nonlinear coupler
Creators: name: El-Orany, Faisal A. A.
name: Abdalla, M. Sebawe
name: Perina, Jan
Publisher: name: arXiv
Year: 2009
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We investigate the quantum properties for the codirectional three-mode Kerr nonlinear coupler. We investigate single-, two- and three-mode quadrature squeezing, Wigner function and purity. We prove that this device can provide richer nonclassical effects than those produced by the conventional coupler, i.e. the two-mode Kerr coupler. We show that it can provide squeezing and the quadrature squeezing exhibiting leaf-revival-collapse phenomenon in dependence on the values of the interaction parameters. In contrast to the conventional Kerr coupler two different forms of cat states can be simultaneously generated in the waveguides. We deduce conditions required for the complete disentanglement between the components of the system.
description: 23 pages, 6 figures
Strong decays of $N^{*}(1535)$ in an extended chiral quark model
Creators: name: An, Chun-Sheng
name: Zou, Bing-Song
Publisher: name: arXiv
Year: 2009
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The strong decays of the $N^{*}(1535)$ resonance are investigated in an extended chiral quark model by including the low-lying $qqqq\bar{q}$ components in addition to the $qqq$ component. The results show that these five-quark components in $N^{*}(1535)$ contribute significantly to the $N^{*}(1535)\to Nπ$ and $N^{*}(1535)\to Nη$ decays. The contributions to the $Nη$ decay come from both the lowest energy and the next-to-lowest energy five-quarks components, while the contributions to the $Nπ$ decay come from only the latter one. Taking these contributions into account, the description for the strong decays of $N^{*}(1535)$ is improved, especially, for the puzzling large ratio of the decays to $Nη$ and $Nπ$.
description: 6 pages, 1 figure
The Sociological Writing According to Abdelkebir KHATIBI "Tattooed Memory" –as Model- Socio-Semiotics Approch
Creators: name: Dr. Abdelkader HOMIDA
Publisher: name: Zenodo
Year: 2024
Subjects: Writing, Semiotics, Tattooed Memory, Abdelkebir KHATIBI, Charles Sanders PEIRCE.

description: Abstract

This article aims to question the theme of “writing linked to the social” and the vision towards what is written in the intellectual text in Abdelkebir KHATIBI, through a socio-semiotic approach, based on the trilogy of Charles Sanders Peirce: the representation, communication, and meaning. Indeed, the application of such a semiotic approach can reveal to us the importance of the theme studied and help us treat the subject with a precise and scientific treatment that responds to a major problem represented in the way in which the theme appeared through our use of his autobiographical story entitled “Tattooed Memory”.
Uniform shrinking and expansion under isotropic Brownian flows
Creators: name: Baxendale, Peter
name: Dimitroff, Georgi
Publisher: name: arXiv
Year: 2009
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 37H10; 60H10

description: We study some finite time transport properties of isotropic Brownian flows. Under a certain nondegeneracy condition on the potential spectral measure, we prove that uniform shrinking or expansion of balls under the flow over some bounded time interval can happen with positive probability. We also provide a control theorem for isotropic Brownian flows with drift. Finally, we apply the above results to show that under the nondegeneracy condition the length of a rectifiable curve evolving in an isotropic Brownian flow with strictly negative top Lyapunov exponent converges to zero as $t\to \infty$ with positive probability.
The profile of bubbling solutions of a class of fourth order geometric equations on 4-manifolds
Creators: name: Weinstein, Gilbert
name: Zhang, Lei
Publisher: name: arXiv
Year: 2008
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 35J60, 53B21

description: We study a class of fourth order geometric equations defined on a 4-dimensional compact Riemannian manifold which includes the Q-curvature equation. We obtain sharp estimates on the difference near the blow-up points between a bubbling sequence of solutions and the standard bubble.
title: Urgencias en pacientes oncológicos: papel del radiólogo.
Creators: name: Gómez Jiménez, Estibaliz
Publisher: name: Sociedad Española de Radiología Médica
Year: 2014
Subjects: subject: Ultrasound
subject: CT-Angiography
subject: CT
subject: Oncology
subject: Emergency
subject: Abdomen

description: Objetivo docente
Revisión del tema
Conclusiones
Bibliografía
description: Objetivo docente:
Revisar y clasificar las complicaciones urgentes mas frecuentes de los pacientes oncológicos. Conocer las características radiológicas de las complicaciones más...