cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
350 Micron Observations of Local Luminous Infrared Galaxies and the Temperature Dependence of the Emissivity Index
Creators: name: Yang, M.
name: Phillips, T. G.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report 350micron observations of 18 nearby luminous infrared galaxies (LIRGs), using the Submillimeter High Angular Resolution Camera II (SHARC-II) mounted on the Caltech Submillimeter Observatory (CSO) 10.4m telescope. Combining our 350micron flux measurements with the existing far-infrared (far-IR) and submillimeter (submm) data, we fit a single-temperature model to the spectral energy distributions (SEDs), and find the dust temperatures, emissivity indices and far-IR luminosities having sample medians of Td = 39.4+-7.9K, beta = 1.6+-0.3 and log(Lfir/Lsolar) = 11.2+-0.6. An empirical inverse Td-beta correlation, best described by Td = 9.86E9^(1/(4.63 + beta)), is established for the local LIRG sample, which we argue can be explained by the intrinsic interdependence between the dust temperature and grain emissivity index as physical parameters, as well as variations in grain properties in the the interstellar medium (ISM).
description: (22 pages in preprint format, 3 tables, 5 figures, accepted for publication in ApJ)
Electronic transport in two-dimensional strained Dirac materials under multi-step Fermi velocity barrier: transfer matrix method for supersymmetric systems
Creators: name: Phan, Anh-Luan
name: Le, Dai-Nam
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In recent years, graphene and other two-dimensional Dirac materials like silicene, germanene, etc. have been studied from different points of view: from mathematical physics, condensed matter physics to high energy physics. In this study, we utilize both supersymmetric quantum mechanics (SUSY-QM) and transfer matrix method (TTM) to examine electronic transport in two-dimensional Dirac materials under the influences of multi-step deformation as well as multi-step Fermi velocity barrier. The effects of multi-step effective mass and multi-step applied fields are also taken into account in our investigation. Results show the possibility of modulating the Klein tunneling of Dirac electron by using strain or electric field.
description: 22 pages, 7 figures, published on European Physical Journal B
Example poster for CS20.5: How to upload to Zenodo
Creators: name: Günther, Hans Moritz
Publisher: name: Zenodo
Year: 2021
Subjects: Instructions for conferences

description: Your Abstract here. This poster is NOT a poster template – you all know how to design posters better than I do. This purpose of this presentation is simply to have a pdf file that I can upload to Zenodo so that I can screenshot the process and prepare the webpages on how to upload.
 Note that the text in the pdf has a good size for a normal poster, but is small when the poster is reduced in size to fit the screen. Thus, I will also generate a slide version as PNG that has less detail and can be used as thumbnail on the website.
Additional file 1 of Electronic informed consent criteria for research ethics review: a scoping review
Creators: name: Yusof, Mohd Yusmiaidil Putera Mohd
name: Teo, Chin Hai
name: Ng, Chirk Jenn
Publisher: name: figshare
Year: 2022
Subjects: Medicine
Biotechnology
Science Policy

description: Additional file 1. Standardized Charting Form.
What does it mean to be a survivor? The identity and stigmatisation of Ebola survivors in Monrovia, Liberia
Creators: name: Venables, Emilie
name: Pellecchia, Umberto
name: Kourdi, Yasmine Al
name: Bergh, Rafael Van Den
name: Decroo, Tom
Publisher: name: F1000Research
Year: 2015

description: The Ebola epidemic in Liberia has had a huge impact on individuals and communities. Community perceptions about Ebola can affect the efficiency of Ebola interventions and cause the stigmatisation of patients, health-care workers and survivors. The experiences of those who are considered ‘survivors’ of Ebola cannot be ignored.

Qualitative research was used to explore the following questions:

How do Ebola survivors in Monrovia feel about the identity that has been given to them?

How do survivors of Ebola influence community perceptions of the virus?

What kind of challenges and stigmatisation do survivors of Ebola experience?

What kind of interventions are required to reduce the stigma?

A better understanding of the Ebola virus will lead to the harmonisation of messages relating to both survivors and to the potential sexual transmission of Ebola. Information around Ebola survivors needs to be communicated beyond authority figures and community leaders. Psycho-social and health promotional teams need to provide ongoing assistance to survivors, their families and communities through outreach activities and through supporting survivor’s organisations.
Exploring the barriers and enablers to ART initiation for HIV-positive pregnant women in a PMTCT Option B+ programme in Shiselweni, Swaziland
Creators: name: Lobenguni Simelane-Mahlinza
name: Horter, Shona
name: Velibanti Dlamini
name: Zanele Thabede
name: Velloza, Jennifer
name: Kourline, Tatiana
name: Kerschberger, Bernhard
name: Rusch, Barbara
Publisher: name: F1000Research
Year: 2015

description: ‘Treatment as Prevention’ strategies have received increasing interest and attention in recent years, and the use of antiretroviral therapy (ART) to prevent the transmission of HIV from mother to child represents the first proof of concept of a TasP strategy. Initiation of pregnant women on ART both improves maternal clinical outcomes and reduces infant infections. Option B+ provides lifelong ART to pregnant women regardless of their CD4 count, which is now recommended within WHO 2013 guidelines due to evidenced benefits of this option above others. However, little is known about women’s views regarding lifelong ART when ineligible for treatment under standard guidelines (i.e. CD4>350), and the factors influencing their initiation of ART (or not).Our findings suggest that women could be more likely to initiate lifelong ART under prevention of mother-to-child transmission (PMTCT) B+ when they have full information about the treatment programme and the value it can bring to both themselves as individuals, and to their unborn children. Peer support and partner support also influence their choice to initiate. Main barriers to ART initiation were partner non-disclosure and fears about confidentiality breaches by health practitioners. These findings may not be generalizable to other contexts, as is inherent in qualitative research. However they provide key insights into women’s views on Option B+ in high HIV prevalence settings, which should be considered in future programmatic activity.
Predicting a new resonance as charmed-strange baryonic analog of $D_{s0}^*(2317)$
Creators: name: Luo, Si-Qiang
name: Chen, Bing
name: Liu, Xiang
name: Matsuki, Takayuki
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: By an unquenched quark model, we predict a charmed-strange baryon state, namely, the $Ω_{c0}^d(1P,1/2^-)$. Its mass is predicted to be 2945 MeV, which is below the $Ξ_c\bar{K}$ threshold due to the nontrivial coupled-channel effect. So the $Ω_{c0}^d(1P,1/2^-)$ state could be regraded as the analog of the charmed-strange meson $D_{s0}^*(2317)$. It is a good opportunity for the running Belle II experiment to search for this state in the $Ω_c^{(*)}γ$ mass spectrum experiment in the future.
description: 8 pages, 2 tables and 3 figures. Accepted by PRD
The XMM-Newton Optical Monitor Survey of the Taurus Molecular Cloud
Creators: name: Audard, Marc
name: Briggs, Kevin
name: Grosso, Nicolas
name: Guedel, Manuel
name: Scelsi, Luigi
name: Bouvier, Jerome
name: Telleschi, Alessandra
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The Optical Monitor (OM) on-board XMM-Newton obtained optical/ultraviolet data for the XMM-Newton Extended Survey of the Taurus Molecular Cloud (XEST), simultaneously with the X-ray detectors. With the XEST OM data, we aim to study the optical and ultraviolet properties of TMC members, and to do correlative studies between the X-ray and OM light curves. In particular, we aim to determine whether accretion plays a significant role in the optical/ultraviolet and X-ray emissions. The Neupert effect in stellar flares is also investigated. Coordinates, average count rates and magnitudes were extracted from OM images, together with light curves with low time resolution (a few kiloseconds). For a few sources, OM FAST mode data were also available, and we extracted OM light curves with high time resolution. The OM data were correlated with Two Micron All Sky Survey (2MASS) data and with the XEST catalogue in the X-rays. The XEST OM catalogue contains 2,148 entries of which 1,893 have 2MASS counterparts. However, only 98 entries have X-ray counterparts, of which 51 of them are known TMC members and 12 additional are TMC candidates. The OM data indicate that accreting stars are statistically brighter in the U band than non-accreting stars after correction for extinction, and have U-band excesses, most likely due to accretion. The OM emission of accreting stars is variable, probably due to accretion spots, but it does not correlate with the X-ray light curve, suggesting that accretion does not contribute significantly to the X-ray emission of most accreting stars. In some cases, flares were detected in both X-ray and OM light curves and followed a Neupert effect pattern, in which the optical/ultraviolet emission precedes the X-ray emission of a flare, whereas the X-ray flux is proportional to the integral of the optical flux.
description: Accepted by A&A, to appear in a special section/issue dedicated to the XMM-Newton Extended Survey of the Taurus Molecular Cloud (XEST). Version with higher resolution figures available at this http://www.issibern.ch/teams/Taurus/papers.html
Η συμβολή της τεχνολογίας της πληροφορίας στην καταγραφή και διάχυση δεδομένων και πεπραγμένων της Δασικής Υπηρεσίας
Creators: name: Καλτσίδου, Χρυσή Γεωργίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2018
Subjects: Δασικές υπηρεσίες
Διαδίκτυο
Πληροφορική
Forestry services
IT services
Technology contribution

description: Η χρήση της τεχνολογίας και οι δυνατότητες που προσφέρει η πληροφορική, συντελεί στην καλύτερη λειτουργία και οργάνωση των Δασικών Υπηρεσιών. Μέσω αυτών αυξάνεται η παραγωγικότητα του ανθρώπινου δυναμικού και βελτιώνεται η υφιστάμενη κατάσταση στον τομέα της διαχείρισης και διοίκησης των δασών και των δασικών εκτάσεων. Σκοπός της παρούσας εργασίας είναι η διερεύνηση της συμβολής της πληροφορικής και του διαδικτύου στην αξιοποίηση τους από τις δασικές υπηρεσίες. Για τον σκοπό αυτό, πραγματοποιήθηκε επίσκεψη στις δασικές υπηρεσίες του νομού Πέλλας, στις οποίες ανήκει η Διεύθυνση Δασών Πέλλας, δύο Δασαρχεία και ένα Δασονομείο, καθώς και πολυάριθμα Δασοφυλάκεια. Το μεθοδολογικό πλαίσιο που χρησιμοποιήθηκε ήταν η δημιουργία και έπειτα η συμπλήρωση ενός ερωτηματολογίου από τους εργαζόμενους των δασικών υπηρεσιών. Η συγκέντρωση των πληροφοριών που καταγράφηκαν είναι αποτέλεσμα τόσο των απαντήσεων που δόθηκαν στο ερωτηματολόγιο όσο και των συνεντεύξεων από τους εργαζομένους κατά τη διάρκεια των επί τόπου επισκέψεων. Τα αποτελέσματα της έρευνας έδειξαν ότι η χρήση των νέων τεχνολογιών της πληροφορικής είναι απαραίτητη για την καθημερινή λειτουργία των υπηρεσιών, και παρόλη τη σχετικά ικανοποιητική υπάρχουσα κατάσταση, παραμένουν διάφορα προβλήματα που απαιτούν βελτίωση
description: The use of technology and informatic technology enables a better operation and organization of Forestry Services. Thus, it is possible to increase the productivity of human resources and improve the existing situation in the field of forest management and administration.The purpose of this paper is to research the contribution of information technology and the Internet, and their use by the forestry services. The research was carried out at the forestry services of the prefecture of Pella, which includes the Forestry Directorate of Pella and numerous Forest Offices.The methodological framework used was the creation and then the completion of a questionnaire by forestry workers. The collection of the information recorded is the result of both the replies given to the questionnaire and the interviews made by the workers during the on-site visits.The results of this research showed that the use of new IT technologies is essential for the day-to-day operation of services. Despite the relatively satisfactory state of affairs, various problems remain and require the development of improved methods
Η εικόνα του εαυτού παιδιών προσχολικής ηλικίας και η σχέση της με την Αναπτυξιακή Διαταραχή Κινητικού Συντονισμού
Creators: name: Μακρογιαννάκη, Ιωάννα Νικολάου
Publisher: name: Aristotle University of Thessaloniki
Year: 2018
Subjects: Αυτοαντίληψη
Κινητική ανάπτυξη
Αυτοεκτίμηση
Self-image
Self-perception
Motor development

description: Σκοπός της παρούσας μελέτης ήταν η διερεύνηση της αυτοαντίληψης παιδιών προσχολικής ηλικίας και η σχέση της με την Αναπτυξιακή Διαταραχή Κινητικού Συντονισμού (ΑΔΚΣ). Πραγματοποιήθηκε αξιολόγηση της αυτοαντίληψης σε ακαδημαϊκούς και μη ακαδημαϊκούς παράγοντες, καθώς επίσης και η πιθανή συσχέτισή της με την ΑΔΚΣ. Το δείγμα αποτέλεσαν 200 παιδιά (104 αγόρια 96 κορίτσια), προσχολικής ηλικίας (μέσο όρο ηλικίας 5 ετών) τα οποία φοιτούσαν σε έντεκα προσχολικές τάξεις, των πόλεων του νομού Θεσσαλονίκης και Ηρακλείου. Για τη συλλογή των δεδομένων και για την αξιολόγηση της αυτοαντίληψης και της κινητικής ανάπτυξης των παιδιών, χρησιμοποιήθηκαν δύο τεστ (ένα για την εικόνα του εαυτού και ένα για την κινητική ανάπτυξη) τα οποία επιδόθηκαν μια φορά στο κάθε παιδί. Τα αποτελέσματα της έρευνας έδειξαν ότι υπάρχει υψηλή θετική συσχέτιση της αυτοαντίληψης με την ΑΔΚΣ στα παιδιά προσχολικής ηλικίας. Τα παιδιά που εμφάνιζαν χαμηλό δείχτη αυτοαντίληψης, φάνηκε να έχουν και χαμηλό σκορ ΑΔΚΣ στο κινητικό τεστ. Αντιθέτως τα παιδιά με υψηλή αυτοαντίληψη δεν φάνηκε να παρουσιάζουν υψηλότερο σκορ και στο κινητικό τεστ
description: The main objective of this study was to investigate the self-perception of pre-schoolers (5 year olds) and its relationship with Developmental Coordination Disorder (DCD). This research examined self-perception in academic and non-academic terms, as well as the possible correlation with DCD. The sample consisted of 200 pre-schoolers (104 boys, 96 girls) attending eleven preschool classes in the cities of Thessaloniki and Heraklion. For the collection of data and the assessment of self-perception and developmental coordination in children, two tests were used (one for self- image and one for developmental coordination) which were given to each child once. The results of the survey showed that there is a high, positive correlation of self-perception with lower scores and DCD in pre-schoolers. The children who had a low self-perception indicator, also had lower score and DCD, while the children had also higher scores in movement test
Additional file 2 of Incidence and risk factors of surgical site infection following colorectal surgery in China: a national cross-sectional study
Creators: name: Zhang, Xufei
name: Wang, Zhiwei
name: Chen, Jun
name: Wang, Peige
name: Luo, Suming
name: Xu, Xinjian
name: Mai, Wei
name: Li, Guangyi
name: Wang, Gefei
name: Wu, Xiuwen
name: Ren, Jianan
Publisher: name: figshare
Year: 2020
Subjects: Medicine
Biotechnology
Cancer
Science Policy
Mental Health

description: Additional file 2.
Ανάλυση δεδομένων με ομομορφική κρυπτογράφηση
Creators: name: Σακελλαρίου, Γεώργιος Διονυσίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2018
Subjects: Ανάλυση Δεδομένων
Ομομορφική Κρυπτογραφία
Συσταδοποίηση
Data Analytics
Homomorphic Encryption
Clustering

description: Η συνεισφορά της ανάλυσης δεδομένων είναι εύλογη σε πολλά επιστημονικά πεδία, ωστόσο σε πολλές περιπτώσεις οι απαιτήσεις υπολογιστικής ισχύος και αποθηκευτικού χώρου είναι ανασταλτικός παράγοντας για την ανάλυση των δεδομένων σε ιδιωτικό επίπεδο. Μία προφανής λύση είναι η ανάθεση της ανάλυσης των δεδομένων σε παρόχους υπηρεσιών επεξεργασίας και αποθήκευσης, αλλά αυτή με δεδομένη την αξία των δεδομένων, δημιουργεί ζητήματα προστασίας της ιδιωτικότητας αυτών. Ο σκοπός της διπλωματικής ήταν η κρυπτογραφημένη ανάλυση δεδομένων. Στο πλαίσιο αυτό μελετήθηκαν συστήματα που επεκτείνουν τρέχοντα ΣΔΒΔ, ώστε να καταστήσουν εφικτή την εκτέλεση ερωτημάτων πάνω σε κρυπτογραφημένα δεδομένα, αποσκοπώντας στον προσδιορισμό των δυνατοτήτων τους σε εφαρμογές ανάλυσης δεδομένων. Έπειτα, μελετήθηκε η εφαρμογή ομομορφικής κρυπτογραφίας στην ανάλυση δεδομένων και ειδικά στην κατασκευή του αλγορίθμου K-means, με απώτερο σκοπό να τονιστούν τα προβλήματα που πρέπει ένα ομομορφικό σχήμα κρυπτογραφίας να ξεπεράσει, για να αξιοποιηθεί από αλγορίθμους της ανάλυσης δεδομένων. Επιπρόσθετα και βασιζόμενοι στα αποτελέσματα της μελέτης μας, προτείναμε μία νέα προσέγγιση για τον υπολογισμό του Κ-means στην πλευρά του διακομιστή καθώς επίσης και ένα νέο θεωρητικό μοντέλο επιτιθέμενου. Τέλος, αναπτύξαμε τέσσερις διαφορετικές εκδοχές της προτεινόμενης προσέγγισης υπολογισμού του K-means και διεξήγαμε έναν αριθμό πειραμάτων αξιολόγησης της απόδοσης, με σκοπό την αξιολόγηση της προσέγγισής μας
description: The data analytics contribution is significant in many scientific domains, however in many cases the required processing and memory demands are limiting factor for individual data analytics. An obvious solution is the outsourcing of data analytics to cloud storage and cloud computing providers but given the fact that most of the data are valuable, privacy issues are raised. The aim of the presented thesis was the study of data analytics over encrypted data. We examined systems that extent current DBMS to perform operations over encrypted data, in order to determine their capabilities on data analytics. Then, we examined the application of homomorphic encryption in data analytics and especially in the implementation of K-means algorithm. Our aim was to highlight the issues that an efficient homomorphic scheme has to overcome in algorithms of data analytics. Furthermore, based on our study, we proposed a new approach of server-side computation of K-means and a new adversary model (curious but auditable). Finally, we developed four different versions of our server-side K-means approach and we performed a number of performance evaluation experiments, in order to evaluate our new approach
A secular theory of coplanar, non-resonant planetary system
Creators: name: Migaszewski, Cezary
name: Gozdziewski, Krzysztof
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present the secular theory of coplanar $N$-planet system, in the absence of mean motion resonances between the planets. This theory relies on the averaging of a perturbation to the two-body problem over the mean longitudes. We expand the perturbing Hamiltonian in Taylor series with respect to the ratios of semi-major axes which are considered as small parameters, without direct restrictions on the eccentricities. Next, we average out the resulting series term by term. This is possible thanks to a particular but in fact quite elementary choice of the integration variables. It makes it possible to avoid Fourier expansions of the perturbing Hamiltonian. We derive high order expansions of the averaged secular Hamiltonian (here, up to the order of 24) with respect to the semi-major axes ratio. The resulting secular theory is a generalization of the octupole theory. The analytical results are compared with the results of numerical (i.e., practically exact) averaging. We estimate the convergence radius of the derived expansions, and we propose a further improvement of the algorithm. As a particular application of the method, we consider the secular dynamics of three-planet coplanar system. We focus on stationary solutions in the HD 37124 planetary system.
description: 14 pages, 4 figures, MATHEMATICA file expansion.m, accepted to Monthly Notices of the Royal Astronomical Society. (minor corrections of symbols)
Malaria in bone. Hunting for Hemozoin
Creators: name: Schats, Rachel
name: Dalenbout, Hans
name: Heijs, Bram
Publisher: name: Zenodo
Year: 2019

description: Malaria is known to have had—and still has—a massive impact on health. Although currently absent in the Netherlands, written records indicate that the disease was endemic, mainly in the Dutch coastal regions, from the 17th to the mid-20th century. It is likely that the disease was present in the medieval period as well, considering the environmental circumstances (e.g., low lying marshes and a high abundance of brackish water). However, as a result of the paucity of historical information concerning disease in this period, it is currently only speculative whether malaria was a medieval disease as well. This poster will present and discuss a new method to study the occurrence and impact of malaria in the medieval Netherlands. This method, pioneered by Dr. Jamie Inwood at Yale University and further developed by the authors, focuses on the detection of hemozoin, a waste product of the parasite, using MALDI-TOF-MS (matrix-assisted laser desorption/ionization time-of-flight mass spectrometry). Results of the initial research, using synthetic hemozoin, various MALDI-matrices, and different solvents, show that high-intensity signals of the characteristic 616 m/z peak can be obtained at low amounts. This suggests that the improved protocol is an effective and efficient way to detect archaeological hemozoin as amounts in human skeletal remains are likely to be low. Future research will apply this method to medieval bone samples to detect malaria in skeletal remains and in doing so will be able to study the spread and impact of medieval malaria.
Additional file 1 of Incidence and risk factors of surgical site infection following colorectal surgery in China: a national cross-sectional study
Creators: name: Zhang, Xufei
name: Wang, Zhiwei
name: Chen, Jun
name: Wang, Peige
name: Luo, Suming
name: Xu, Xinjian
name: Mai, Wei
name: Li, Guangyi
name: Wang, Gefei
name: Wu, Xiuwen
name: Ren, Jianan
Publisher: name: figshare
Year: 2020
Subjects: Medicine
Biotechnology
Cancer
Science Policy
Mental Health

description: Additional file 1.
A high precision angular encoder based on capacitive coupling
Creators: name: Sankey, Todd
Publisher: name: University of British Columbia
Year: 2009

description: A method for measuring angular position based on sensing electrostatic fields is described. A device is presented which uses this method to achieve a resolution of 10 radians and is fabricated entirely from common electronic components mounted on printed circuit board. The angular sensor consists of two coplanar, coaxial disks, one static and the other freely rotating. An electrostatic field is generated by Nr active radiator electrodes on the static disk. Nm passive modifier electrodes on the rotating disk determine the magnitude of the signals measured by a detector circuit for each of the radiators. Nr The relationship between Nr and Nm is chosen to be Nm = Nr/2 +1 which produces a vernier effect between the two disks. This effect determines the relationship between successive signals measured at a given rotor position. This relationship is shown to be most easily analyzed using Fourier analysis because the angle of the rotor can be entirely determined from phase of the single frequency component at ώ = π - 2π/Nr. Also presented are the effects of two different kinds of misalignment of the sensor: an offset in the centres of rotation of the disks and a tilt in the axes of rotation. The errors are characterized and a method for measuring and reducing their impact is shown. Several tests of the sensor are presented and the results analyzed. A device simulator is used to examine the effect of changing the physical parameters of the sensor. A laser and spot detector are employed to test the accuracy of the sensor in measuring very small rotations. The repeatability of the sensor is examined by attaching the rotor to a stepper motor. Finally the current design is extrapolated to suggest possibilities for a more precise sensor or a sensor better suited to different environments.
Split States, Entropy Enigmas, Holes and Halos
Creators: name: Denef, Frederik
name: Moore, Gregory W.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We investigate degeneracies of BPS states of D-branes on compact Calabi-Yau manifolds. We develop a factorization formula for BPS indices using attractor flow trees associated to multicentered black hole bound states. This enables us to study background dependence of the BPS spectrum, to compute explicitly exact indices of various nontrivial D-brane systems, and to clarify the subtle relation of Donaldson-Thomas invariants to BPS indices of stable D6-D2-D0 states, realized in supergravity as "hole halos". We introduce a convergent generating function for D4 indices in the large CY volume limit, and prove it can be written as a modular average of its polar part, generalizing the fareytail expansion of the elliptic genus. We show polar states are "split" D6-anti-D6 bound states, and that the partition function factorizes accordingly, leading to a refined version of the OSV conjecture. This differs from the original conjecture in several aspects. In particular we obtain a nontrivial measure factor g_{top}^{-2} e^{-K} and find factorization requires a cutoff. We show that the main factor determining the cutoff and therefore the error is the existence of "swing states" -- D6 states which exist at large radius but do not form stable D6-anti-D6 bound states. We point out a likely breakdown of the OSV conjecture at small g_{top} (in the large background CY volume limit), due to the surprising phenomenon that for sufficiently large background Kahler moduli, a charge N Q supporting single centered black holes of entropy ~ N^2 S(Q) also admits two-centered BPS black hole realizations whose entropy grows like N^3 at large N.
description: 150 pages, 21 figures. Save a tree, read onscreen. v2: references added and note added
Measuring C-odd correlations at lepton-proton and photon-proton collisions
Creators: name: Ahmadov, A. I.
name: Bystritskiy, Yu. M.
name: Kuraev, E. A.
name: Zemlyanaya, E.
name: Shishkina, T. V.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We consider the charge-odd correlations (COC) in cross sections of processes of production of charged particles. The cases of a muonic pair and pion systems $π^{+}π^{-},π^{+}π^{-}π^{0}$ are considered in detail for electron-proton or photon-proton collisions in the proton fragmentation region kinematics. COC arise from interference of amplitudes which describe the different mechanisms of charged leptons (pions) creation. One of them corresponds to production of particles in the charge-odd state (one virtual photon or vector meson annihilation to this system of particles) and the other corresponds to the charge-even state of produced particles (creation by two photons). COC for muon-antimuon pair creation have a pure QED nature and can be considered as a normalization process. The processes with pion production are sensitive to some characteristics of proton wave functions and, besides, can be used for checking the anomalous and normal parts of the effective pionic lagrangian. Three electromagnetic currents operator matrix element can be measured in photon-proton interactions with lepton pair production. For this aim a charge-odd combination of cross sections can be constructed as a conversion of leptonic 3-rank tensor with hadronic ones. These experiments can be considered as an alternative to deep virtual Compton scattering.
description: 13 pages, 3 figures
Experimental entanglement characterization of two-rebit states
Creators: name: Prasannan, Nidhin
name: De, Syamsundar
name: Barkhofen, Sonja
name: Brecht, Benjamin
name: Silberhorn, Christine
name: Sperling, Jan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We characterize entanglement subject to its definition over real and complex, composite quantum systems. In particular, a method is established to assess quantum correlations with respect to a selected number system, illuminating the deeply rooted, yet rarely discussed question of why quantum states are described via complex numbers. With our experiment, we then realize two-photon polarization states that are entangled with respect to the notion of two rebits, comprising two two-level systems over real numbers. At the same time, the generated states are separable with respect to two complex qubits. Among other results, we reconstruct the best approximation of the generated states in terms of a real-valued, local expansion and show that this yields an incomplete description of our data. Conversely, the generated states are shown to be fully decomposable in terms of tensor-product states with complex wave functions. Thereby, we probe paradigms of quantum physics with modern theoretical tools and experimental platforms that are relevant for applications in quantum information science and technology and connected to the fundamentals of the quantum description of nature.
description: Version close to published letter in PRA, including supplemental material
Additional file 2 of Electronic informed consent criteria for research ethics review: a scoping review
Creators: name: Yusof, Mohd Yusmiaidil Putera Mohd
name: Teo, Chin Hai
name: Ng, Chirk Jenn
Publisher: name: figshare
Year: 2022
Subjects: Medicine
Biotechnology
Science Policy

description: Additional file 2. Search strategy for the databases.
Superfluidity in a Three-flavor Fermi Gas with SU(3) Symmetry
Creators: name: He, Lianyi
name: Jin, Meng
name: Zhuang, Pengfei
Publisher: name: arXiv
Year: 2006
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: Superconductivity (cond-mat.supr-con)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We investigate the superfluidity and the associated Nambu-Goldstone modes in a three-flavor atomic Fermi gas with SU(3) global symmetry. The s-wave pairing occurs in flavor anti-triplet channel due to the Pauli principle, and the superfluid state contains both gapped and gapless fermionic excitations. Corresponding to the spontaneous breaking of the SU(3) symmetry to a SU(2) symmetry with five broken generators, there are only three Nambu-Goldstone modes, one is with linear dispersion law and two are with quadratic dispersion law. The other two expected Nambu-Goldstone modes become massive with a mass gap of the order of the fermion energy gap in a wide coupling range. The abnormal number of Nambu-Goldstone modes, the quadratic dispersion law and the mass gap have significant effect on the low temperature thermodynamics of the matter.
description: 9 pages, 2 figures, published version
Dynamics of photo-excited Cs atoms attached to helium nanodroplets
Creators: name: Rendler, Nicolas
name: Scognamiglio, Audrey
name: Dulitz, Katrin
name: Stienkemeier, Frank
name: Barranco, Manuel
name: Pí, Marti
name: Halberstadt, Nadine
Publisher: name: arXiv
Year: 2021
Subjects: subject: Atomic and Molecular Clusters (physics.atm-clus)
subject: FOS: Physical sciences

description: We present an experimental study of the dynamics following the photo-excitation and subsequent photo-ionization of single Cs atoms on the surface of helium nanodroplets. The dynamics of excited-Cs-atom desorption and re-adsorption as well as CsHe exciplex formation are measured using femtosecond pump-probe velocity-map-imaging spectroscopy and ion-time-of-flight spectrometry. The timescales for the desorption of excited Cs atoms off helium nanodroplets as well as the timescales for CsHe exciplex formation are experimentally determined for the 6p states of Cs. For the 6p $^2Π_ {1/2}$ state, our results confirm that the excited Cs atoms only desorb from the nanodroplet when the excitation wavenumber is blue-shifted from the $6p\,^2Π_ {1/2} \leftarrow 6s\,^2Σ_ {1/2}$ resonance. Our results suggest that the dynamics following excitation to the 6p $^2Π_ {3/2}$ state can be described by an evaporation-like desorption mechanism, whereas the dynamics arising from excitation to the 6p $^2Σ_ {1/2}$ state is indicative for a more impulsive desorption process. Furthermore, our results suggest a helium-induced spin-orbit relaxation from the the 6p $^2Σ_ {1/2}$ state to the 6p $^2Π_ {1/2}$ state. Our findings largely agree with the results of time-dependent $^4$He-density-functional theory (DFT) simulations published earlier [Coppens et al., Eur. Phys. J. D 73, 94 (2019)].
Study of half harmonic plasma waves in CO laser-plasma interactions
Creators: name: Zhu, Yueqiang
Publisher: name: University of British Columbia
Year: 2009

description: Half harmonic plasma waves, which can be generated by the two plasmon decay (TPD) and stimulated Raman scattering (SRS) instabilities in the regions with plasma density near nc/4, are studied experimentally in the interactions of an intense (I l≤10¹⁴W/cm²) CO₂ laser beam with an underdense plasma. The plasma is produced by focusing the CO₂ laser pulse (2 ns FWHM) onto a stabilized laminar nitrogen gas jet flowing from a Laval nozzle into low pressure helium. The plasma waves were investigated with ruby laser Thomson scattering. The absolute TPD and SRS instabilities were observed at pump intensities greater than 1.3 x 10¹³ W/cm² for a plasma with a density scale length of 2400 µm and an electron temperature of 300 eV. The difference predicted by the theory between plasma waves generated by the two plasma decay instability and those due to the stimulated Raman scattering deduced from theory are experimentally confirmed. Two plasmon decay is found to dominate the generation of half harmonic plasma waves. The TPD plasma waves appear in series of up to 8 bursts. The intensity distribution of the unsaturated TPD plasma waves is determined to be well described by linear theory. The intensity distribution of the saturated TPD plasma waves is shown to be governed by the saturation and quenching mechanisms. The angular distribution of ( 3/2)ω₀ emission deduced from the intensity distribution of the saturated TPD plasmons agrees well with the experimental results. The experimental evidence shows that the coupling of plasma waves to ion acoustic waves and the steepening of the density profile are the dominant saturation and quenching mechanism for the TPD instability.
Nematic response revealed by coherent phonon oscillations in BaFe$_2$As$_2$
Creators: name: Lee, Min-Cheol
name: Kwak, Inho
name: Lee, Yeongseon
name: Lee, Bumjoo
name: Park, Byung Cheol
name: Wolf, Thomas
name: Noh, Tae Won
name: Kim, Kyungwan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We investigate coherent phonon oscillations of BaFe$_2$As$_2$ using optical pump-probe spectroscopy. Time-resolved optical reflectivity shows periodic modulations due to $A_{1g}$ coherent phonon of $c$-axis arsenic vibrations. Optical probe beams polarized along the orthorhombic $a$- and $b$-axes reveal that the initial phase of coherent oscillations shows a systematic deviation as a function of temperature, although these oscillations arise from the same $c$-axis arsenic vibrations. The oscillation-phase remains anisotropic even in the tetragonal structure, reflecting a nematic response of BaFe$_2$As$_2$. Our study suggests that investigation on the phase of coherent phonon oscillations in optical reflectivity can offer unique evidence of a nematic order strongly coupled to a lattice instability.
description: 5 pages, 4 figures
Ανάλυση μεθόδων πρόβλεψης κατανάλωσης φυσικού αερίου
Creators: name: Παπαγεωργίου, Θωμάς Παύλου
Publisher: name: Aristotle University of Thessaloniki
Year: 2018
Subjects: Πρόβλεψη κατανάλωσης
Χρονοσειρές
Ανάπτυξη εφαρμογών ανάλυσης δεδομένων
Prediction of consumption
Time series
Development of data analysis applications

description: Αντικείμενο της παρούσας διπλωματικής εργασίας είναι η ανάλυση μεθόδων πρόβλεψης κατανάλωσης φυσικού αερίου. Θα δούμε τις διαδικασίες που πρέπει να ακολουθηθούν έτσι ώστε να καταλήξουμε σε ορθή και έγκυρη πρόβλεψη κατανάλωσης. Γίνετε αναφορά στο πρόβλημα της πρόβλεψης κατανάλωσης αερίου και τον λόγω που οι εταιρίες παροχής αερίου πρέπει να είναι ακριβείς. Η πρόβλεψη κατανάλωσης αεριού βασίζεται στις χρονοσειρές, θα παρατηρήσουμε τρόπους ανάλυσης χρονοσειρών και μοντέλα πρόβλεψης αυτών. Επίσης παρουσιάζονται τρόποι ανάπτυξης εφαρμογών και ανάλυσης δεδομένων ενός τέτοιου προβλήματος. Τέλος γίνετε αναφορά στην χρησιμότητα του business intelligence και σε διάφορα επιχειρηματικά μοντέλα.
description: The subject of this thesis is the analyze methods for forecasting natural gas consumption. We will see the procedures to be followed to arrive at a correct and valid consumption forecast. Be aware of the problem of forecasting gas consumption and why gas suppliers need to be precise. The prediction of gas consumption is based on time series, we will observe ways of analyzing time series and models for predicting them. Also presented are ways of developing applications and analyzing data of such a problem. Finally, be aware of the usefulness of business intelligence and various business models.
BALRoGO: Bayesian Astrometric Likelihood Recovery of Galactic Objects -- Global properties of over one hundred globular clusters with Gaia EDR3
Creators: name: Vitral, Eduardo
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: We present BALRoGO: Bayesian Astrometric Likelihood Recovery of Galactic Objects, a public code to measure the centers, effective radii, and bulk proper motions of Milky Way globular clusters and Local Group dwarf spheroidals, whose data are mixed with Milky Way field stars. Our approach presents innovative methods such as surface density fits allowing for strong interloper contamination and proper motion fits using a Pearson VII distribution for interlopers, instead of classic Gaussian-mixture recipes. We also use non-parametric approaches to represent the color-magnitude diagram of such stellar systems based in their membership probabilities, previously derived from surface density and proper motion fits. The robustness of our method is verified by comparing its results with previous estimates from the literature as well as by testing it on mock data from N-body simulations. We applied BALRoGO to Gaia EDR3 data for over one hundred Milky Way globular clusters and nine Local Group dwarf spheroidals, and we provide positions, effective radii, and bulk proper motions. Finally, we make our algorithm available as an open source software.
description: 16 pages, 10 figures, 2 tables, accepted for publication in MNRAS
Transient Zitterbewegung of charge carriers in graphene and carbon nanotubes
Creators: name: Rusin, Tomasz M.
name: Zawadzki, Wlodek
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Observable effects due to trembling motion (Zitterbewegung, ZB) of charge carriers in bilayer graphene, monolayer graphene and carbon nanotubes are calculated. It is shown that, when the charge carriers are prepared in the form of gaussian wave packets, the ZB has a transient character with the decay time of femtoseconds in graphene and picoseconds in nanotubes. Analytical results for bilayer graphene allow us to investigate phenomena which accompany the trembling motion. In particular, it is shown that the transient character of ZB in graphene is due to the fact that wave subpackets related to positive and negative electron energies move in opposite directions, so their overlap diminishes with time. This behavior is analogous to that of the wave packets representing relativistic electrons in a vacuum.
description: 7 pages, 3 figures, augmented version
Symmetry decomposition of negativity of massless free fermions
Creators: name: Murciano, Sara
name: Bonsignori, Riccarda
name: Calabrese, Pasquale
Publisher: name: arXiv
Year: 2021
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider the problem of symmetry decomposition of the entanglement negativity in free fermionic systems. Rather than performing the standard partial transpose, we use the partial time-reversal transformation which naturally encodes the fermionic statistics. The negativity admits a resolution in terms of the charge imbalance between the two subsystems. We introduce a normalised version of the imbalance resolved negativity which has the advantage to be an entanglement proxy for each symmetry sector, but may diverge in the limit of pure states for some sectors. Our main focus is then the resolution of the negativity for a free Dirac field at finite temperature and size. We consider both bipartite and tripartite geometries and exploit conformal field theory to derive universal results for the charge imbalance resolved negativity. To this end, we use a geometrical construction in terms of an Aharonov-Bohm-like flux inserted in the Riemann surface defining the entanglement. We interestingly find that the entanglement negativity is always equally distributed among the different imbalance sectors at leading order. Our analytical findings are tested against exact numerical calculations for free fermions on a lattice.
description: 48 pages, 7 figures
Ενεργοποίηση του εγκάρσιου κοιλιακού μυός κατά την εκτέλεση επιλεγμένων ασκήσεων του πυρήνα της σπονδυλικής στήλης
Creators: name: Γιάννενα, Ειρήνη Χρυσοβαλάντου Κωνσταντίνου
Publisher: name: Aristotle University of Thessaloniki
Year: 2018
Subjects: Εγκάρσιος κοιλιακός μυός
Υπερηχογράφημα
Κοιλιακή σύσπαση
Transverse abdominal muscles
Ultrasound
Abdominal contraction

description: Είναι γενικά αποδεκτό ότι η δραστηριότητα του εγκάρσιου κοιλιακού μυός επηρεάζει τη σταθεροποίηση του κορμού και τη σταθερότητα της σπονδυλικής στήλης. Σκοπός της παρούσας έρευνας είναι η αξιολόγηση της ενεργοποίησης του εγκάρσιου κοιλιακού μυός μέσω της μέτρησης της εγκάρσιας διατομής του, μέσα από τρεις διαφορετικές θέσεις με την χρήση υπερηχογραφήματος, εξετάζοντας και την συμμετρία(δεξιά και αριστερή πλευρά). Όλοι οι συμμετέχοντες πραγματοποίησαν τέσσερις διαφορετικές θέσεις, από τις οποίες η πρώτη πραγματοποιήθηκε σε θέση ηρεμίας, η δεύτερη με σύσπαση του εγκάρσιου κοιλιακού μυός(TRA), η τρίτη πραγματοποιώντας σύσπαση του TRA με άρση λεκάνης (γέφυρα) και η τέταρτη με ταυτόχρονη σύσπαση του TRA, άρση λεκάνης και τοποθέτηση βάρους στη λεκάνη. Δεν υπήρξαν διαφορές στην συμμετρία των αθλητών και μη αθλητών ούτε στην ενεργοποίηση του TRA. Συμπερασματικά, οι ασκήσεις που ενεργοποιούν περισσότερο τον TRA είναι η κοιλιακή σύσπαση και η σύσπαση με άρση λεκάνης.
description: It is generally accepted that transverse abdominal muscle (TRA) activity affects the stabilization of the trunk and the stability of the vertebral column. The purpose of the present study is to evaluate the activation of the TRA by measuring its transversal cross section through three different positions with using ultrasonography by examining the symmetry ( right and left). All participants took four different positions, the first being in a calm position, the second with a contraction of a TRA , the third contraction of TRA and bridge stretch and weight loading in the pelvis. There were not differences in the share of athletes and non- athletes or in the activation of TRA. Consequently, the exercises that trigger more TRA are abdominal contraction and abdominal contraction with simultaneous bridge stretch.
Galaxy Zoo: The large-scale spin statistics of spiral galaxies in the Sloan Digital Sky Survey
Creators: name: Land, Kate
name: Slosar, Anze
name: Lintott, Chris
name: Andreescu, Dan
name: Bamford, Steven
name: Murray, Phil
name: Nichol, Robert
name: Raddick, M. Jordan
name: Schawinski, Kevin
name: Szalay, Alex
name: Thomas, Daniel
name: Vandenberg, Jan
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We re-examine the evidence for a violation of large-scale statistical isotropy in the distribution of projected spin vectors of spiral galaxies. We have a sample of $\sim 37,000$ spiral galaxies from the Sloan Digital Sky Survey, with their line of sight spin direction confidently classified by members of the public through the online project Galaxy Zoo. After establishing and correcting for a certain level of bias in our handedness results we find the winding sense of the galaxies to be consistent with statistical isotropy. In particular we find no significant dipole signal, and thus no evidence for overall preferred handedness of the Universe. We compare this result to those of other authors and conclude that these may also be affected and explained by a bias effect.
description: Accepted for publication in MNRAS. 8 pages, 5 figures
Cosmology with Love: Measuring the Hubble constant using neutron star universal relations
Creators: name: Chatterjee, Deep
name: R., Abhishek Hegade K.
name: Holder, Gilbert
name: Holz, Daniel E.
name: Perkins, Scott
name: Yagi, Kent
name: Yunes, Nicolás
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Gravitational-wave cosmology began in 2017 with the observation of the gravitational waves emitted in the merger of two neutron stars, and the coincident observation of the electromagnetic emission that followed. Although only a $30\%$ measurement of the Hubble constant was achieved, future observations may yield more precise measurements either through other coincident events or through cross correlation of gravitational-wave events with galaxy catalogs. Here, we implement a new way to measure the Hubble constant without an electromagnetic counterpart and through the use of the binary Love relations. These relations govern the tidal deformabilities of neutron stars in an equation-of-state insensitive way. Importantly, the Love relations depend on the component masses of the binary in the source frame. Since the gravitational-wave phase and amplitude depend on the chirp mass in the observer (and hence redshifted) frame, one can in principle combine the binary Love relations with the gravitational-wave data to directly measure the redshift, and thereby infer the value of the Hubble constant. We implement this approach in both real and synthetic data through a Bayesian parameter estimation study in a range of observing scenarios. We find that for the LIGO/Virgo/KAGRA design sensitivity era, this method results in a similar measurement accuracy of the Hubble constant to those of current-day, dark-siren measurements. For third generation detectors, this accuracy improves to $\lesssim 10\%$ when combining measurements from binary neutron star events in the LIGO Voyager era, and to $\lesssim 2\%$ in the Cosmic Explorer era.
description: accepted in PRD