cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Crossed Andreev reflection in diffusive contacts
Creators: name: Brinkman, A.
name: Golubov, A. A.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Crossed Andreev reflection in multiterminal structures in the diffusive regime is addressed within the quasiclassical Keldysh-Usadel formalism. The elastic cotunneling and crossed Andreev reflection of quasiparticles give nonlocal currents and voltages (depending on the actual biasing of the devices) by virtue of the induced proximity effect in the normal metal electrodes. The magnitude of the nonlocal processes is found to scale with the square of the barrier transparency and to decay exponentially with interface spacing. Nonlocal cotunneling and crossed Andreev conductances are found to contribute equally to the nonlocal current, which is of relevance to the use of normal metal-superconducting heterostructures as sources of entanglement.
Scattering Poles Near the Real Axis for Two Strictly Convex Obstacles
Creators: name: Iantchenko, Alexei
Publisher: name: arXiv
Year: 2007
Subjects: subject: Analysis of PDEs (math.AP)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: To study the location of poles for the acoustic scattering matrix for two strictly convex obstacles with smooth boundaries, one uses an approximation of the quantized billiard operator $M$ along the trapped ray between the two obstacles. Using this method Ikawa and G{é}rard established the existence of parallel rows of poles in a strip $Im z\leq c$ as $Re z$ tends to infinity. Assuming that the boundaries are analytic and the eigenvalues of Poincar{é} map are non-resonant we use the Birkhoff normal form for $M$ to improve this result and to get the complete asymptotic expansions for the poles in any logarithmic neighborhood of real axis.
FOOD CONSUMPTION PATTERNS AND NUTRITIONAL ADEQUACY OF STUNTING TODDLERS IN THE COASTAL AREA OF SERAM BEACH IN THE WESTERN PART OF MALUKU
Creators: name: Zasendy Rehena
name: Grace Jeny Wakanno
name: Yohana Djurumana
name: Trixie Leunupun
name: Mersy Delty Kainama
Publisher: name: Zenodo
Year: 2024
Subjects: Stunting, Food Consumption Patterns, Nutritional Adequacy, Toddlers.

description: Abstract

Stunting is a chronic nutritional problem that has an impact on the growth and development of toddlers. One of the causes of stunting is food consumption patterns, including the type of food ingredients and nutritional adequacy. The aim of this research is to determine food consumption patterns and the relationship between toddler nutritional adequacy and the incidence of stunting in the coastal area of West Seram, Maluku. The type of research is analytical observational research with a cross sectional approach which was carried out from July to August 2023. The sample was 156 toddlers, which was calculated using the Lemeshow formula. The sampling technique is purposive sampling. The instruments in this research were a 24 hour recall form and microtoice. Data on types of food ingredients were analyzed descriptively and nutritional adequacy data using the chi-square test. The results of the descriptive analysis show that the main type of food consumed by stunted and non-stunted toddlers is rice, vegetables are leaves (cassava), animal food is fresh fish and only a few consume fruit and milk as well as snacks. The chi-quare test results showed that energy adequacy (p=0.004), Vitamin A (p=0.002), zinc (p=0.001 and calcium (p=0.033) were related to the incidence of stunting in toddlers. Protein adequacy (p=0.211) and iron (p=0.067) is not related. It can be concluded that energy adequacy, Vitamin A, Zinc and Calcium are related, while protein and iron adequacy are not related to the incidence of stunting in children under five in the West Seram Coastal area.
Η σχέση του εργασιακού πάθους με τις εργασιακές στάσεις και συμπεριφορές
Creators: name: Καραγιάννη, Ελένη Αθανασίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2020
Subjects: Αρμονικό εργασιακό πάθος
Εργασιακή ικανοποίηση
Εργασιακή φωνή
Harmonious work passion
Job satisfaction
Working voice

description: Σκοπός της παρούσας διπλωματικής εργασίας, είναι η μελέτη της σχέσης του εργασιακού πάθους με τις εργασιακές στάσεις και συμπεριφορές των εργαζόμενων στο Γενικό Νοσοκομείο Θεσσαλονίκης «Γ. Παπανικολάου». Αυτή η μελέτη ερεύνησε τις στάσεις 100 εργαζόμενων από διάφορα τμήματα του νοσοκομείου που ασχολούνται με διοικητικά θέματα έτσι ώστε να ανακαλυφθούν οι συσχετίσεις του αρμονικού εργασιακού πάθους με την εργασιακή τους ικανοποίηση καθώς και την εργασιακή τους φωνή. Τα ευρήματα της έρευνας αποδεικνύουν ότι το αρμονικό εργασιακό πάθος των εργαζόμενων συσχετίζεται θετικά με τις παραπάνω μεταβλητές, προάγει την εργασιακή τους ικανοποίηση καθώς επίσης και την εργασιακή φωνή των εργαζόμενων. Τέλος, επισημαίνονται κάποιες πρακτικές εφαρμογές για τον οργανισμό ώστε να επιφέρει ή να διατηρηθεί το αρμονικό πάθος των νεοεισαχθέντων ή αρχαιότερων εργαζόμενων του νοσοκομείου για την δημιουργία θετικού κλίματος, ανατροφοδότησης και ικανοποίησης, με σκοπό να δημιουργηθεί ένα πιο θετικό κλίμα ενθάρρυνσης της επικοινωνίας και αύξησης της εργασιακής φωνής με πιο άμεσο τρόπο απέναντι στα καθημερινά προβλήματα που δύναται να προκύψουν από τις διάφορες συμπεριφορές, διαδικασίες κτλ.
description: The purpose of this diploma thesis is to study the relationship between working attitudes and behaviors of the employees in the General Hospital of Thessaloniki “G. Papanikolaou”. This research studied 100 employees from sever departments of the hospital which are involved in managerial positions so as to discover the correlation between harmonious work passion, job satisfaction and employee voice. The finding of the research proves that harmonious work passion increases employees’ job satisfaction and employee voice. Finally, some practical implementations are pointed out concerning the hospital, in order to increase or maintain harmonious work passion of new entries or old entries employees of the hospital, to create a positive work climate, with feedback and satisfaction, which may encourage communication and increase employee voice to be directly opposite to everyday problems that may arise from the different behaviors, processes etc.
A high-fidelity numerical study on the propulsive performance of pitching flexible plates
Creators: name: Li, Guojun
name: Kemp, Gael
name: Jaiman, Rajeev Kumar
name: Khoo, Boo Cheong
Publisher: name: arXiv
Year: 2021
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: In this paper, we numerically investigate the propulsive performance of three-dimensional pitching flexible plates with varying flexibility and trailing edge shapes. To eliminate the effect of other geometric parameters, only the trailing edge angle is varied from 45° (concave), 90° (rectangular) to 135° (convex) while maintaining the constant area of the flexible plate. We examine the impact of the frequency ratio f* defined as the ratio of the natural frequency of the flexible plate to the actuated pitching frequency. Through our numerical simulations, we find that the global maximum mean thrust occurs near f*=1 corresponding to the resonance condition. However, the optimal propulsive efficiency is achieved around f*=1.54 instead of the resonance condition. While the convex plate with low and high bending stiffness values shows the best performance, the rectangular plate with moderate bending stiffness is the most efficient propulsion configuration. Through dynamic mode decomposition, we find that the passive deformation can help in redistributing the pressure gradient thus improving the efficiency and thrust production. A momentum-based thrust evaluation approach is adopted to link the instantaneous vortical structures with the time-dependent thrust. When the vortices detach from the trailing edge, the instantaneous thrust shows the largest values due to the strong momentum change and convection process. Moderate flexibility and convex shape help transfer momentum to the fluid, thereby improving thrust generation and promoting the transition from drag to thrust. The increase of the trailing edge angle can broaden the range of flexibility that produces positive mean thrust.
Mapping the Electromagnetic Fields of Heavy-Ion Collisions with the Breit-Wheeler Process
Creators: name: Brandenburg, James Daniel
name: Zha, Wangmei
name: Xu, Zhangbu
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Ultra-relativistic heavy-ion collisions are expected to produce the strongest electromagnetic fields in the known Universe. These highly-Lorentz contracted fields can manifest themselves as linearly polarized quasi-real photons that can interact via the Breit-Wheeler process to produce lepton anti-lepton pairs. The energy and momentum distribution of the produced dileptons carry information about the strength and spatial distribution of the colliding fields. Recently it has been demonstrated that photons from these fields can interact even in heavy-ion collisions with hadronic overlap, providing a purely electromagnetic probe of the produced medium. In this review we discuss the recent theoretical progress and experimental advances for mapping the ultra-strong electromagnetic fields produced in heavy-ion collisions via measurement of the Breit-Wheeler process.
description: updated, v2 was incorrect manuscript and metadata
LEGALISING DRUGS OF ABUSE: THE LE CHATELIER THOUGHT EXPERIMENT
Creators: name: Gibbons, Simon
Publisher: name: Journal of Natural Products Discovery
Year: 2023

description: Background
There is currently much debate on legalising some psychoactive materials such as Cannabis. This could stabilise policing costs, reduce crime, generate tax revenue and control sale by registration of outlets. Such outcomes are valuable, but legalisation may have unintended consequences that are deleterious to society or have no effects on crime or user’s health. Here, I propose that behaviour following changes to control of possession and supply may have outcomes that could be predicted by the equilibrium law proposed by Henry Le Chatelier. This law describes a system moving in such a way as to remove the constraints placed upon it.
Aims
The purpose of this opinion paper is to follow Le Chatelier’s Principle (LCP) as a thought experiment to predict the outcomes (products) of drug consumption (reactants) when factors influencing this consumption (conditions) are changed. If this equilibrium law can be applied to human behaviour, it may have value to predict the outcomes of these conditions and assess whether they are positive or injurious. It must be noted that the views expressed here are solely those of the author.
Methods
Pubmed, ScienceDirect, SpringerLink and Google were used for literature searches and “drugs” will be used for drugs of abuse and distinct from medicinal drugs, apart from methadone and heroin (diamorphine).
Results
Applying LCP predicts that drug use may not necessarily decrease, but availability, poor health and criminal activity may increase use. The businesses behind drug treatment and illegal distribution have too much financial incentive to halt operations.
Conclusion
Organisations recommending legislative changes to drug control should conduct thought experiments to horizon scan for unintended consequences, that may be costly and deleterious to society. Governments often focus too heavily on the evidence base as the sole driver for change. However, common sense drawn from opinion from these experiments may lead to wisdom.
Keywords; War on drugs, legalisation, Le Chatelier’s Principle, psychoactive substances
description: Journal of Natural Products Discovery, Vol. 2 No. 3 (2023)
Emancipation & Renewal: English Catholicism in the Nineteenth Century
Creators: name: Yielding, Cheryl E.
Publisher: name: Old Dominion University Libraries
Year: 1982

description: English Catholics faced great difficulties and divisions in the nineteenth century. The chief problems were obtaining civil rights and the right to provide their children with a religious education, prejudice, the restoration of the hierarchy for more efficient government, and the split between Ultramontanes and Liberals. The influx of Irish added to these problems.

This thesis is concerned only with the English Catholics and those Irish Catholics living in England. The "Irish Question" is not dealt with, as the Irish Catholics had different problems and needs than their English brethren. The major emphasis is the prejudice encountered by English Catholics and the restoration of the hierarchy.
Spitzer Observations of High Redshift QSOs
Creators: name: Hines, D. C.
name: Krause, O.
name: Rieke, G. H.
name: Fan, X.
name: Blaylock, M.
name: Neugebauer, G.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We have observed 13 z >= 4.5 QSOs using the Multiband Imaging Photometer for Spitzer, nine of which were also observed with the Infrared Array Camera. The observations probe rest wavelengths ~ 0.6-4.3 micron, bracketing the local minimum in QSO spectral energy distributions (SEDs) between strong optical emission associated directly with accretion processes and thermal emission from hot dust heated by the central engine. The new Spitzer photometry combined with existing measurements at other wavelengths shows that the SEDs of high redshift QSOs (z >= 4.5) do not differ significantly from typical QSOs of similar luminosity at lower redshifts (z
description: 1 eps figure
Deep unsupervised 3D human body reconstruction from a sparse set of landmarks
Creators: name: Madadi, Meysam
name: Bertiche, Hugo
name: Escalera, Sergio
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: In this paper we propose the first deep unsupervised approach in human body reconstruction to estimate body surface from a sparse set of landmarks, so called DeepMurf. We apply a denoising autoencoder to estimate missing landmarks. Then we apply an attention model to estimate body joints from landmarks. Finally, a cascading network is applied to regress parameters of a statistical generative model that reconstructs body. Our set of proposed loss functions allows us to train the network in an unsupervised way. Results on four public datasets show that our approach accurately reconstructs the human body from real world mocap data.
Gate-tunable electron interaction in high-κ dielectric films
Creators: name: Kondovych, Svitlana
name: Luk'yanchuk, Igor
name: Baturina, Tatyana I.
name: Vinokur, Valerii M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The two-dimensional (2D) logarithmic character of Coulomb interaction between charges and the resulting logarithmic confinement is a remarkable inherent property of high dielectric constant (high-$κ$) thin films with far reaching implications. Most and foremost, this is the charge Berezinskii-Kosterlitz-Thouless transition with the notable manifestation, low-temperature superinsulating topological phase. Here we show that the range of the confinement can be tuned by the external gate electrode and unravel a variety of electrostatic interactions in high-$κ$ films. We find that by reducing the distance from the gate to the film, we decrease the spatial range of the 2D long-range logarithmic interaction, changing it to predominantly dipolar or even to exponential one at lateral distances exceeding the dimension of the film-gate separation. Our findings offer a unique laboratory for the in-depth study of topological phase transitions and related phenomena that range from criticality of quantum metal- and superconductor-insulator transitions to the effects of charge-trapping and Coulomb scalability in memory nanodevices.
description: 8 pages, 2 figures, 1 table
Fame Emerges as a Result of Small Memory
Creators: name: Bingol, Haluk
Publisher: name: arXiv
Year: 2006
Subjects: subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: Computers and Society (cs.CY)
subject: Multiagent Systems (cs.MA)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: A dynamic memory model is proposed in which an agent ``learns'' a new agent by means of recommendation. The agents can also ``remember'' and ``forget''. The memory size is decreased while the population size is kept constant. ``Fame'' emerged as a few agents become very well known in expense of the majority being completely forgotten. The minimum and the maximum of fame change linearly with the relative memory size. The network properties of the who-knows-who graph, which represents the state of the system, are investigated.
description: 7 pages, 5 figures
Two Real Scalar WIMP Model in the Assisted Freeze-Out Scenario
Creators: name: Sáez, Bastián Díaz
name: Möhling, Kilian
name: Stöckinger, Dominik
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study a simple dark matter model given by two interacting real singlet scalars, with only one of them coupled to the Higgs. The model therefore presents a minimal assisted-freeze-out framework: both scalars contribute to the dark matter relic density, but only one of them takes part in the elastic scattering with nuclei. This reduces the expected interaction rate in direct detection experiments in such a way that the model in some regions of the parameter space may evade XENON1T constraints. We explore the model under theoretical (perturbativity, stability potential and unitarity) and experimental constraints (Higgs to invisible, relic density, direct detection), with the use of the narrow-width-approximation near the Higgs resonance to calculate the average annihilation cross section. We show that the model is viable in the Higgs resonance region and for scalar singlets masses of hundreds of GeV, although the model becomes highly constrained at high energies.
Η επιλογή των μικρού μήκους και ευρείας διαμέτρου οδοντικών εμφυτευμάτων (τύπου Bicon) στην αποκατάσταση ελλειμματικών οπισθίων περιοχών της κάτω γνάθου. Πρόδρομη κλινική μελέτη. Χειρουργικό στάδιο
Creators: name: Παναγιώτου, Ελένη Ζήση
Publisher: name: Aristotle University of Thessaloniki
Year: 2020
Subjects: Μικρού μήκους εμφυτεύματα
Μερική νωδότητα
Αρχική σταθερότητα εμφυτεύματος
Bicon
Implant stability
Short implants

description: Τα μικρού μήκους οδοντικά εμφυτεύματα μπορούν να αποτελέσουν μία εναλλακτική λύση στις διαδικασίες οστικής αναγέννησης σε περιοχές της φατνιακής ακρολοφίας με μειωμένο ύψος οστού. Σκοπός της παρούσας κλινικής μελέτης ήταν να αναλυθούν τα ποσοστά επιβίωσης των εμφυτευμάτων (SDI ≤ 6,5 mm) της εταιρείας Bicon, χωρίς καμία διαδικασία αύξησης ή αναγέννησης οστού, παρακολουθούμενα για μία περίοδο 12 μηνών. Επιλέχθηκαν 7 ασθενείς με τουλάχιστον δύο γειτονικά ελλείποντα οπίσθια δόντια. Τοποθετήθηκαν 19 εμφυτεύματα μήκους ≤ 6,5mm της εταιρείας Bicon. Πραγματοποιήθηκε χειρουργική προσέγγιση δύο σταδίων και τοποθετήθηκαν μονήρεις στεφάνες για τη φόρτιση των εμφυτευμάτων. Τα αποτελέσματα περιλάμβαναν διάφορες κλινικές παραμέτρους, όπως η σταθερότητα του εμφυτεύματος (τιμές Periotest, PTVs) και οι μεταβολές του ύψους του οστού, που αξιολογήθηκαν 3, 6 και 12 μήνες μετά την τοποθέτησή τους. Δεν παρουσιάστηκε καμία απώλεια εμφυτεύματος έως και 12 μήνες μετά. Δεν παρατηρήθηκε στατιστικώς σημαντική διαφορά στις κλινικές ή ακτινογραφικές παραμέτρους, εκτός από τις PTVs (p<0,05) και τις τιμές του επιπέδου του οστού. Η χρήση των μικρού μήκους εμφυτευμάτων συνδέθηκε με εξαιρετικά κλινικά και ακτινολογικά αποτελέσματα 12 μηνών, εμφανίζοντας όλο και καλύτερη σταθερότητα σε όλα τα διαστήματα αξιολόγησης.
description: Short dental implants can be an alternative solution to bone augmentation procedures at the sites of reduced alveolar bone. The purpose of this clinical trial was to analyze the survival rates of implants (Bicon®) (SDI ≤ 6.5 mm), without any bone augmentation or regeneration procedures with a period of 12 months follow-up. Seven patients with two adjacent missing posterior teeth were recruited. 19 Bicon® implants with ≤ 6.5mm length were placed. A two-stage surgical approach and single crowns were used for implant placement and loading. Outcomes included peri-implant clinical parameters, implant stability (Periotest values; PTVs) and peri-implant bone changes, which were assessed at baseline, 3, 6 and 12 months post-loading. There was no implant loss up to 12 months post-loading. No signiﬁcant difference, in the clinical or radiographic parameters, was observed, except for PTVs (p < 0.05) and bone level values. The use of short dental implants was associated with excellent 12 months clinical and radiographic outcomes, presenting an increasing stability throughout evaluation intervals.
On the No-ghost Theorem in String Theory
Creators: name: Furuuchi, Kazuyuki
name: Ohta, Nobuyoshi
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We give a simple proof of the no-ghost theorem in the critical bosonic string theory by using a similarity transformation.
description: 5 pages, v2: a note added and a ref. added, v3: minor refinement of wording, published version
Bibliometrics in practice: how to generate reports for institutions - v2.0 / 2019
Creators: name: Torres-Salinas, Daniel
Publisher: name: Zenodo
Year: 2019
Subjects: bibliometrics
scientometrics
research evaluation
university level

description: In an institutional context and at a professional level, one of our main tasks is to carry out bibliometric reports. These studies are essential because they are used by managers to make decisions (distribution of funds, recruitment of personnel, planning of research lines, etc.). In this talk we will explain how to make a global bibliometric report of an institution, we use as a case study the University of Granada. We focus on these topics: 1) General considerations: target, selection of indicators, objectives, etc.); 2) what sources of information can be used; 3) How to contextualize and interpret the indicators; 4) How to compare the results with other institutions (Benchmarking); 5) How to make graphs and tables; and 6) Dissemination of results and data.
description: {"references": ["Torres-Salinas, Daniel . Indicadores y estad\u00edsticas de investigaci\u00f3n ugr'18. DOI:10.5281/zenodo.1462772"]}
Atmospheric characterization of hot Jupiters using hierarchical models of Spitzer observations
Creators: name: Keating, Dylan
name: Cowan, Nicolas B.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: The field of exoplanet atmospheric characterization is trending towards comparative studies involving many planetary systems, and using Bayesian hierarchical modelling is a natural next step. Here we demonstrate two use cases. We first use hierarchical modelling to quantify variability in repeated observations by reanalyzing a suite of ten Spitzer secondary eclipse observations of the hot Jupiter XO-3b. We compare three models: one where we fit ten separate eclipse depths, one where we use a single eclipse depth for all ten observations, and a hierarchical model. By comparing the Widely Applicable Information Criterion of each model, we show that the hierarchical model is preferred over the others. The hierarchical model yields less scatter across the suite of eclipse depths -- and higher precision on the individual eclipse depths -- than does fitting the observations separately. We find that the hierarchical eclipse depth uncertainty is larger than the uncertainties on the individual eclipse depths, which suggests either slight astrophysical variability or that single eclipse observations underestimate the true eclipse depth uncertainty. Finally, we fit a suite of published dayside brightness measurements for 37 planets using a hierarchical model of brightness temperature vs irradiation temperature. The hierarchical model gives tighter constraints on the individual brightness temperatures than the non-hierarchical model. Although we tested hierarchical modelling on Spitzer eclipse data of hot Jupiters, it is applicable to observations of smaller planets like hot neptunes and super earths, as well as for photometric and spectroscopic transit or phase curve observations.
description: 11 pages, 7 figures. Accepted for publication by MNRAS. Updated analysis to use the correctly calculated brightness temperature uncertainties from Baxter (2020). Conclusions in second half of paper changed slightly compared to previous version to reflect the new analysis
Quantum back-reaction of the superpartners in a large-N supersymmetric hybrid model
Creators: name: Baacke, J.
name: Kevlishvili, N.
name: Pruschke, J.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Astrophysics (astro-ph)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study the supersymmetric hybrid model near and after the end of inflation. As usual, we reduce the model to a purely scalar hybrid model on the level of the classical fields. But on the level of quantum fluctuations and their backreaction we take into account all superpartners of the waterfall field in a large-N approximation. The evolution after slow roll displays two phases with a different characteristic behaviour of the classical and fluctuation fields. We find that the fluctuations of the pseudoscalar superpartner are of particular importance in the late time phase. The motion of the waterfall field towards its classical expectation value is found to be very slow and suggests a rather flat potential and a stochastic force.
description: 37 pages 19 figures
Repensar Scriptorium
Creators: name: Martí-Lahera, Yohannis
name: Puerta-Díaz, Mirelys
Publisher: name: Zenodo
Year: 2017
Subjects: repositorio institucional, scriptorium, Universidad de La Habana, acceso abierto

description: Se describe el punto de partida, evolución y situación actual del Repositorio Institucional de Tesis de la Universidad de La Habana, Cuba.
Additional file 5 of Human menstrual blood-derived stem cells mitigate bleomycin-induced pulmonary fibrosis through anti-apoptosis and anti-inflammatory effects
Creators: name: Chen, Xin
name: Wu, Yi
name: Wang, Yanling
name: Chen, Lijun
name: Zheng, Wendi
name: Zhou, Sining
name: Xu, Huikang
name: Li, Yifei
name: Yuan, Li
name: Xiang, Charlie
Publisher: name: figshare
Year: 2020
Subjects: subject: Biochemistry
subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Physiology
subject: Pharmacology
subject: Biotechnology
subject: Chemical Sciences not elsewhere classified
subject: Ecology
subject: Immunology
subject: FOS: Clinical medicine
subject: Developmental Biology
subject: Marine Biology
subject: Cancer
subject: Hematology

description: Additional file 5.
The N2K Consortium VI: Doppler Shifts Without Templates and Three New Short-Period Planets
Creators: name: Johnson, John A.
name: Marcy, Geoffrey W.
name: Fischer, Debra A.
name: Laughlin, Gregory
name: Butler, R. Paul
name: Henry, Gregory W.
name: Valenti, Jeff A.
name: Ford, Eric B.
name: Vogt, Steven S.
name: Wright, Jason T.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present a modification to the iodine cell Doppler technique that eliminates the need for an observed stellar template spectrum. For a given target star, we iterate toward a synthetic template spectrum beginning with an existing spectrum of a similar star. We then perturb the shape of this first-guess template to match the program observation of the target star taken through an iodine cell. The elimination of a separate template observation saves valuable telescope time, a feature that is ideally suited for the quick-look strategy employed by the ``Next 2000 Stars'' (N2K) planet search program. Tests using Keck/HIRES spectra indicate that synthetic templates yield a short-term precision of 3 m/s and a long-term, run-to-run precision of 5 m/s. We used this new Doppler technique to discover three new planets: a 1.5 Mjup planet in a 2.1375 d orbit around HD 86081; a 0.71 Mjup planet in circular, 26.73 d orbit around HD 224693; and a Saturn-mass planet in an 18.179 d orbit around HD 33283. The remarkably short period of HD 86081b bridges the gap between the extremely short-period planets detected in the OGLE survey and the 16 Doppler-detected hot jupiters (P < 15 d), which have an orbital period distribution that piles up at about three days. We have acquired photometric observations of two of the planetary host stars with the automated photometric telescopes at Fairborn Observatory. HD 86081 and HD 224693 both lack detectable brightness variability on their radial velocity periods, supporting planetary-reflex motion as the cause of the radial velocity variability. HD 86081 shows no evidence of planetary transits in spite of a 17.6% transit probability.
description: 39 pages, 12 figures, 8 tables (ApJ Accepted)
Shape-velocity correlation defines polarization in migrating cell simulations
Creators: name: Thomas, Gilberto L.
name: Fortuna, Ismael
name: Perrone, Gabriel C.
name: Graner, François
name: de Almeida, Rita M. C.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Biological Physics (physics.bio-ph)
subject: FOS: Physical sciences

description: Cell migration plays essential roles in development, wound healing, diseases, and in the maintenance of a complex body. Experiments in collective cell migration generally measure quantities such as cell displacement and velocity. The observed short-time diffusion regime for mean square displacement in single-cell migration experiments on flat surfaces calls into question the definition of cell velocity and the measurement protocol. Theoretical results in stochastic modeling for single-cell migration have shown that this fast diffusive regime is explained by a white noise acting on displacement on the direction perpendicular to the migrating cell polarization axis (not on velocity). The prediction is that only the component of velocity parallel to the polarization axis is a well-defined quantity, with a robust measurement protocol. Here, we ask whether we can find a definition of a migrating-cell polarization that is able to predict the cell's subsequent displacement, based on measurements of its shape. Supported by experimental evidence that cell nucleus lags behind the cell center of mass in a migrating cell, we propose a robust parametrization for cell migration where the distance between cell nucleus and the cell's center of mass defines cell shape polarization. We tested the proposed methods by applying to a simulation model for three-dimensional cells performed in the CompuCell3D environment, previously shown to reproduce biological cells kinematics migrating on a flat surface.
Neutrino Signals from Solar Neutralino Annihilations in Anomaly Mediated Supersymmetry Breaking Model
Creators: name: Liu, Jia
name: Yin, Peng-fei
name: Zhu, Shou-hua
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The lightest neutralino, as the dark matter candidate, can be gravitationally captured by the Sun. In this paper, we studied the high energy neutrino signals from solar neutralino annihilations in the core of the Sun in the anomaly mediated supersymmetry (SUSY) breaking (AMSB) model. Based on the event-by-event monte carlo simulation code WimpSim, we studied the detailed energy and angular spectrum of the final muons at large neutrino telescope IceCube. More precisely we simulated the processes since the production of neutrino via neutralino annihilation in the core of the Sun, neutrino propagation from the Sun to the Earth, as well as the converting processes from neutrino to muon. Our results showed that in the AMSB model it is possible to observe the energetic muons at IceCube, provided that the lightest neutralio has relatively large higgsino component, as a rule of thumb $ N_{13}^2 + N_{14}^2 > 4%$ or equivalently $ σ_{SD} > 10^{- 5} pb$. Especially, for our favorable parameters the signal annual events can reach 102 and the statistical significance can reach more than 20. We pointed out that the energy spectrum of muons may be used to distinguish among the AMSB model and other SUSY breaking scenarios.
description: 26 pages, 11 figures;V2 references added;V3 value of m_t,g-2(muon),b->sgamma updated;V4 version to appear in PRD, a typo corrected
Electrooptic mach-zehnder modulators in gallium arsenide
Creators: name: Tsou, Benny Pen-Cheng
Publisher: name: University of British Columbia
Year: 2008

description: External travelling-wave modulators, utilizing the electrooptic effect, are one class of devices currently being investigated for converting electrical signals to optical signals in applications involving high-speed data transmission. Modulators fabricated on semiconductor substrates, such as GaAs and InP, are particularly attractive in that there exists the possibility of monolithic integration of these devices with other optoelectronic components. The bandwidths of this type of modulator are limited by the velocity mismatch between the microwave and the optical wave, where, in these compound semiconductors, the microwave has the greater phase velocity. To eliminate this problem, a slow-wave electrode structure has been developed in our laboratory in which the phase velocity of the microwave is reduced to match the phase velocity of the optical wave. In this thesis, modulators, based on the integrated optics version of the Mach-Zehnder interferometer, using GaAs substrates, were modelled and fabricated for use with these slow-wave electrodes. The variational method, effective-index method, and beam propagation method were used to model the propagation of light in these devices, and, hence, obtaining the necessary design parameters for these devices. Based on these numerical simulations, modulators were designed and fabricated in AlGaAs epitaxial layers, grown on GaAs substrates by the metal organic chemical vapour deposition technique. Optical attenuation in the waveguides was measured. Parameters such as the half-wave voltage, intrinsic bias, extinction ratio, and microwave indices of the electrodes were measured. The extinction ratio, for most devices, was greater than 99%. The half-wave voltage and the microwave indices, which could be calculated theoretically, were found to be in good agreement with the measured values.
Comparison of Heavy-Ion Transport Simulations: Mean-field Dynamics in a Box
Creators: name: Colonna, Maria
name: Zhang, Ying-Xun
name: Wang, Yong-Jia
name: Cozma, Dan
name: Danielewicz, Pawel
name: Ko, Che Ming
name: Ono, Akira
name: Tsang, Manyee Betty
name: Wang, Rui
name: Wolter, Hermann
name: Xu, Jun
name: Zhang, Zhen
name: Chen, Lie-Wen
name: Cheng, Hui-Gan
name: Elfner, Hannah
name: Feng, Zhao-Qing
name: Kim, Myungkuk
name: Kim, Youngman
name: Jeon, Sangyong
name: Lee, Chang-Hwan
name: Li, Bao-An
name: Li, Qing-Feng
name: Li, Zhu-Xia
name: Mallik, Swagata
name: Oliinychenko, Dmytro
name: Su, Jun
name: Song, Taesoo
name: Sorensen, Agnieszka
name: Zhang, Feng-Shou
Publisher: name: arXiv
Year: 2021
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Within the transport model evaluation project (TMEP) of simulations for heavy-ion collisions, the mean-field response is examined here. Specifically, zero-sound propagation is considered for neutron-proton symmetric matter enclosed in a periodic box, at zero temperature and around normal density. The results of several transport codes belonging to two families (BUU-like and QMD-like) are compared among each other and to exact calculations. For BUU-like codes, employing the test particle method, the results depend on the combination of the number of test particles and the spread of the profile functions that weight integration over space. These parameters can be properly adapted to give a good reproduction of the analytical zero-sound features. QMD-like codes, using molecular dynamics methods, are characterized by large damping effects, attributable to the fluctuations inherent in their phase-space representation. Moreover, for a given nuclear effective interaction, they generally lead to slower density oscillations, as compared to BUU-like codes. The latter problem is mitigated in the more recent lattice formulation of some of the QMD codes. The significance of these results for the description of real heavy-ion collisions is discussed.
Rolling tachyon in anti-de Sitter space-time
Creators: name: Israel, Dan
name: Rabinovici, Eliezer
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the decay of the unstable D-particle in three-dimensional anti-de Sitter space-time using worldsheet boundary conformal field theory methods. We test the open string completeness conjecture in a background for which the phase space available is only field-theoretic. This could present a serious challenge to the claim. We compute the emission of closed strings in the AdS(3) x S^3 x T^4 background from the knowledge of the exact corresponding boundary state we construct. We show that the energy stored in the brane is mainly converted into very excited long strings. The energy stored in short strings and in open string pair production is much smaller and finite for any value of the string coupling. We find no "missing energy" problem. We compare our results to those obtained for a decay in flat space-time and to a background in the presence of a linear dilaton. Some remarks on holographic aspects of the problem are made.
description: JHEP style, 45 pages, one figure; v2: typos corrected, references added, version to appear in JHEP
Η επίδραση των λοιμωδών νοσημάτων στον άνθρωπο
Creators: name: Τζωρτζίδου, Ζωή Ιωάννη
Publisher: name: Aristotle University of Thessaloniki
Year: 2020
Subjects: Λοιμώδη νοσήματα
Ζωοανθρωπονόσοι
Λεϊσμανίαση
Infectious diseases
Zoonoses
Leishmaniasis

description: Σκοπός της παρούσας εργασίας είναι η μελέτη των λοιμωδών νοσημάτων και η επίδραση τους στον άνθρωπο. Το βασικό ερώτημα που τίθεται είναι κατά πόσο τα μεταδοτικά αυτά νοσήματα εγκυμονούν κινδύνους στις μέρες μας, όσο και μελλοντικά. Η μεθοδολογία που ακολουθείται είναι η ανασκόπηση της σχετικής βιβλιογραφίας (άρθρα, εκθέσεις, εικόνες, εγχειρίδια). Αρχικά αναφέρονται τα λοιμώδη νοσήματα γενικά, η επίπτωσή τους, τα επιδημιολογικά τους χαρακτηριστικά, καθώς και οι λοιμώδεις παράγοντες που ευθύνονται για την εξάπλωση τους. Στη συνέχεια γίνεται αναφορά στην ανοσοποιητική ικανότητα του ανθρώπου, καθώς και στις παρεμβάσεις που γίνονται για να διακόψουν την εξάπλωσή των μεταδοτικών αυτών νοσημάτων. Τέλος, περιγράφονται οι κύριες ζωανθρωπονόσοι, νοσήματα τα οποία μεταδίδονται από τα ζώα στον άνθρωπο και αναπτύσσεται διεξοδικότερα η λεϊσμανίαση.
description: The purpose of this study is to study infectious diseases and their impact on humans. The key question is whether these communicable diseases pose risks now and in the future. The methodology used is to review the relevant literature (articles, reports, images, manuals). Initially, infectious diseases are generally mentioned, their incidence, their epidemiological characteristics as well as the infectious agents responsible for their spread. The following is a reference to the human immune system and the interventions to stop the spread of these communicable diseases. Finally, the main zoonoses are described, diseases that are transmitted from animals to humans and that leishmaniasis develops more thoroughly.
A Search for Dense Gas in Luminous Submillimeter Galaxies with the 100-m Green Bank Telescope
Creators: name: Greve, T. R.
name: Hainline, L. J.
name: Blain, A. W.
name: Smail, Ian
name: Ivison, R. J.
name: Papadopoulos, P. P.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report deep K-band (18-27GHz) observations with the 100-m Green Bank Telescope of HCN(1-0) line emission towards the two submillimeter-selected galaxies (SMGs) SMMJ02399-0136 (z=2.81) and SMMJ16359+6612 (z=2.52). For both sources we have obtained spectra with channel-to-channel rms noise of <=0.5mJy, resulting in velocity-integrated line fluxes better than < 0.1 Jy km/s, although we do not detect either source. Such sensitive observations -- aided by gravitational lensing of the sources -- permit us to put upper limits of L_HCN(1-0) < 2x10^10 K km/s pc^2 on the intrinsic HCN(1-0) line luminosities of the two SMGs. The far-infrared (FIR) luminosities for all three SMGs with sensitive HCN(1-0) observations to date are found to be consistent with the tight FIR-HCN luminosity correlation observed in Galactic molecular clouds, quiescent spirals and (ultra) luminous infrared galaxies in the local Universe. Thus, the observed HCN luminosities remain in accordance with what is expected from the universal star formation efficiency per dense molecular gas mass implied by the aforementioned correlation, and more sensitive observations with today's large aperture radio telescopes hold the promise of detecting HCN(1-0) emission in similar objects in the distant Universe.
description: 16 pages, 2 figures, 1 table. Accepted for publication in The Astronomical Journal
Multiperiodic magnetoplasmonic gratings fabricated by the pulse force nanolithography
Creators: name: Lutsenko, Savelii V.
name: Kozhaev, Mikhail A.
name: Borovkova, Olga V.
name: Kalish, Andrey N.
name: Temiryazev, Alexei G.
name: Dagesyan, Sarkis A.
name: Berzhansky, Vladimir N.
name: Shaposhnikov, Alexander N.
name: Kuzmichev, Alexei N.
name: Belotelov, Vladimir I.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We propose a novel technique for the magnetoplasmonic nanostructures fabrication based on the pulse force nanolithography method. It allows one to create the high-quality magnetoplasmonic nanostructures that have lower total losses than the gratings made by the electron beam lithography. The method provides control of the SPP excitation efficiency by varying the grating parameters such as the scratching depth or the number of the scratches in a single period. The quality of the plasmonic gratings was estimated by means of the transverse magneto-optical Kerr effect that is extremely sensitive to the finesse of a plasmonic structure.
Testing the reliability of weak lensing cluster detections
Creators: name: Pace, Francesco
name: Maturi, Matteo
name: Meneghetti, Massimo
name: Bartelmann, Matthias
name: Moscardini, Lauro
name: Dolag, Klaus
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We study the reliability of dark-matter halo detections with three different linear filters applied to weak-lensing data. We use ray-tracing in the multiple lens-plane approximation through a large cosmological simulation to construct realizations of cosmic lensing by large-scale structures between redshifts zero and two. We apply the filters mentioned above to detect peaks in the weak-lensing signal and compare them with the true population of dark matter halos present in the simulation. We confirm the stability and performance of a filter optimized for suppressing the contamination by large-scale structure. It allows the reliable detection of dark-matter halos with masses above a few times 1e13 M_sun/h with a fraction of spurious detections below ~10%. For sources at redshift two, 50% of the halos more massive than ~7e13 M_sun/h are detected, and completeness is reached at ~2e14 M_sun/h.
description: 14 pages, 13 figures, accepted on A&A
Top-k Probable Triangle Discovery in Uncertain Graphs
Creators: name: Κασσιάνος, Βασίλειος Νικολάου
Publisher: name: Aristotle University of Thessaloniki
Year: 2020
Subjects: Πιθανοτικοί Γράφοι
Ανακάλυψη κορυφαίων τριγώνων
Ομαδοποίηση Γράφων
Uncertain Graphs
Top-k triangles Discovery
Graph Clustering

description: Η ανακάλυψη τριγώνων είναι ένα σημαντικό εργαλείο στην εξορυξη γράφων, το οποιο συν- δέεται με πιο πολύπλοκες διαδικασίες εξόρυξης όπως η ανακάλυψη πυκνών υπογράφων, η ανίχνευση κοινοτήτων, η ανίχνευση ενοχλητικής αλληλογραφίας και πολλά άλλα. Το πρόβλημα του μετρήματος τριγώνων έχει μελετηθεί διεξοδικά στη βιβλιογραφία. ́Ομως, σε πολλές σημαντικές εφαρμογές, οι γράφοι χαρακτηρίζονται από αβεβαιότητα, που εισάγει επιπλέον δυσκολίες στη διαδικασία εξόρυξης. Οι ακμές αυτών των γράφων περιέχουν μια τιμή πιθανότητας, η οποία όσο υψηλότερη είναι, τόσο πιο πιθανό είναι η ακμή να περι- έχεται στον γράφο. Σε αυτή τη διπλωματική, επικεντρωνόμαστε στο στην ανακάλυψη των κορυφαίων-κ πιθανών τριγώνων σε αβέβαιους γράφους. Επιπλέον, χρησιμοποιούμε πιθανά τρίγωνα ως εργαλείο μια διαδιακσίας προ-ομαδοποίησης για την βελτίωση των α- ποτελεσμάτων αλγορίθμων ομαδοποίησης αβέβαιων γράφων. Προσφέρουμε μια μελέτη αξιολόγησης βασισμενη σε φυσικούς γράφους, δείχνοντας ότι οι προτεινόμενες τεχνικές είναι αποδοτικές και κλιμακώνονται ικανοποιητικά σε σχέση με το μέγεθος του γράφου. Επιπλέον, χρησιμοποιούμε έναν αλγόριθμο ομαδοποίησης, τον pkwikcluster, για να δε- ίξουμε τη βελτίωση στα αποτελέσματα της τεχνικής προ-ομαδοποίησής μας, σε σχέση με τον σκέτο αλγόριθμο.
description: Triangle discovery is an important graph mining tool, which is strongly related to more complex mining tasks such as dense subgraph discovery, community detection, spam detection and many more. The problem of triangle listing or triangle counting has been studied well in the literature. However, in many important applications, graphs are characterized by uncertainty, which introduces additional difficulties in the mining process. The edges of these graphs are assigned with a probability value, the higher the probability value, the more probable is that the edge is present in the graph. In this thesis, we focus on the discovery of the k most probable triangles in uncertain graphs. We also use probable triangles as a pre-clustering tool to improve the results of uncertain graph clustering algorithms. We offer a evaluation study based on real-world graphs showing that the proposed techniques are efficient and scale well with respect to the size of the input graph. We also use a clustering algorithm for uncertain graphs, pkwikcluster, to show the improved results of the pre-clustering technique compared to the bare algorithm.
Current vortices in hexagonal graphene quantum dots
Creators: name: Gomes, Eudes
name: Moraes, Fernando
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Newly synthesized nanostructures of graphene appear as a promising breeding ground for new technology. Therefore, it is important to identify the role played by the boundary conditions in their electronic features. In this contribution we use the non-equilibrium Green's function method coupled to tight-binding theory to calculate and compare the current patterns of hexagonal graphene quantum dots, with contacts placed at different edge locations. Our results reveal the formation of current vortices when the symmetry of the contact geometry is in conflict with the symmetries of the quantum dot. The presence of current vortices suggests the use of graphene quantum dots as nanomagnets or magnetic nanosensors.
description: New figures were added: which are figs. 9, 10 and 11. New sections were added, which are: Sec. IV A, B, C and D