cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Magnetic activity in the HARPS M-dwarf sample. The rotation-activity relationship for very low-mass stars through R'HK
Creators: name: Astudillo-Defru, Nicola
name: Delfosse, Xavier
name: Bonfils, Xavier
name: Forveille, Thierry
name: Lovis, Christophe
name: Rameau, Julien
Publisher: name: arXiv
Year: 2016
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Atmospheric magnetic fields in stars with convective envelopes heat stellar chromospheres. Starting with the historical Mount Wilson monitoring program, CaH&K lines have been widely used to trace stellar magnetic activity, and as a proxy for rotation period and consequently for stellar age. Monitoring stellar activity has also become essential in filtering out false-positives due to magnetic activity in extra-solar planet surveys. The Ca H&Kemission is traditionally quantified through the R'HK-index, which compares the chromospheric flux in the doublet to the overall bolometric flux of the star. Much work has been done to characterize this index for FGK-dwarfs, but M-dwarfs were left out of these analyses and no calibration of their Ca ii H&K emission to an R'HK exists to date. We set out to characterize the magnetic activity of the low and very low-mass stars by providing a calibration of the R'HK-index that extends to the realm of M-dwarfs, and by evaluating the relation between R'HK and the rotation period. We calibrated the bolometric and photospheric factors for M-dwarfs to properly transform the S-index into the R'HK. We monitored magnetic activity through the Ca ii H&K emission lines in the HARPS M-dwarf sample. The R'HK index, like the fractional X-ray luminosity L_X/Lbol, shows a saturated correlation with rotation, with saturation setting in around a ten days rotation period. Above that period, slower rotators show weaker Ca ii activity, as expected. Under that period, the R'HK index saturates to ~10^-4. Stellar mass modulates the Ca ii activity, with R'HK showing a constant basal activity above 0.6Msun and then decreasing with mass between 0.6Msun and the fully-convective limit of 0.35Msun. Short-term variability of the activity correlates with its mean level, stars with higher R'HK index show larger R'HK variability, as previously observed for earlier spectral types.
description: Accepted for publication in A&A. 21 pages, 10 figures, 6 tables
Universality classes of order parameters composed of many body bound states
Creators: name: Tsvelik, A. M.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: This theoretical paper discusses microscopic models giving rise to special types of order in which conduction electrons are bound together with localized spins to create composite order parameters. It is shown that composite order is related to the formation of a spin liquid with gapped excitations carrying quantum numbers which are a fraction of those of electron. These spin liquids are special in the sense that their formation necessarily involves spin degrees of freedom of both the conduction and the localized electrons. A detailed description of such spin liquid states is presented with a special emphasize on a demonstration of their robustness against local perturbations preserving the Lie group symmetry and the translational invariance.
description: 14 pages, 1 figure, replaced by the published version, Phys. Rev. B 94, 205141 (2016)
Macroetra damara Londt 1994
Creators: name: Londt, Jason G. H.
Publisher: name: Zenodo
Year: 1994
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Asilidae
Macroetra
Macroetra damara

description: damara sp. n Antennal style minute, situated subterminally (ie. segment 3 projecting beyond style and associated seta); tarsomere I not greatly enlarged and equal in length to all other tarsomeres combined......................................................................... 2 First two antennal segments yellowish; dorsocentral macrosetae extending well anterior oftransverse suture; abdomen blackish; ♂ genitalia as in Figs 40-42..... . Material (NMSA - Type 1104): NAMIBIA: 8 ♂ (HT & PT) 1 ♀ (PT): ' Namibia 26.iii. l984 / 54 km S Khorixas. Road 176. 2043'S: 14 49'E / Londt & Stuckenberg / Roadside grass and / flowers, sandy area.' (BMNH - 1 ♂ PT); 1 ♂ (PT), 15 km W Usakos, 21°58'S: 15°30'E, 28.iii.1984, Londt & Stuckenberg; 1 ♂ (PT), 87 km SE Otjiworongo, 21 °03'S:17°1 O'E, 19.iii. l984, Stuckenberg & Londt; 2 d' 3 ♀ (PT), Kamanyab [19°38'S: 14°50'E], ii. I925, Mus. Exped. (SAMC); 1 ♂ 1 ♀ (PT), Kaross, ii. l 925, Mus. Exped. (SAMC); 1 ♀ (PT), Otjituo [19°40'S: 18°36'E], i.1920, Tucker (BMNH). Etymology: from Damaraland.
description: Published as part of Londt, Jason G. H., 1994, Afrotropical Asilidae (Diptera) 25. A key to the genera of the subfamily Stenopogoninae with new synonymy and descriptions of six new genera, pp. 71-96 in ANNALS OF THE NATAL MUSEUM 35 on page 84, DOI: 10.5281/zenodo.8360701
Non-Kondo many-body physics in a Majorana-based Kondo type system
Creators: name: van Beek, Ian J.
name: Braunecker, Bernd
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We carry out a theoretical analysis of a prototypical Majorana system, which demonstrates the existence of a Majorana-mediated many-body state and an associated intermediate low-energy fixed point. Starting from two Majorana bound states, hosted by a Coulomb-blockaded topological superconductor and each coupled to a separate lead, we derive an effective low-energy Hamiltonian, which displays a Kondo-like character. However, in contrast to the Kondo model which tends to a strong- or weak-coupling limit under renormalization, we show that this effective Hamiltonian scales to an intermediate fixed point, whose existence is contingent upon teleportation via the Majorana modes. We conclude by determining experimental signatures of this fixed point, as well as the exotic many-body state associated with it.
description: published version
Microscopic mechanism of ultrashort-pulse laser ablation of metals: a molecular dynamics study incorporating electronic entropy effects
Creators: name: Tanaka, Yuta
name: Tsuneyuki, Shinji
Publisher: name: arXiv
Year: 2023
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The microscopic mechanism of metal ablation induced by ultrashort laser pulse irradiation is investigated. A two-temperature model scheme combined with molecular dynamics (TTM-MD) is developed to incorporate electronic entropy effects into the simulation of metal ablation while satisfying the energy conservation law. Simulation with the TTM-MD scheme reveals that ultrashort laser pulse irradiation near the ablation threshold causes high-energy ion emission and sub-nanometer depth ablation, as observed experimentally, due to the electronic entropy effect. It is also shown that the electronic entropy effect is also significant in spallation.
description: 13 pages, 18 figures
Rural representation of the surveillance, epidemiology, and end results database
Creators: name: Lund, J.L.
name: Herb, J.
name: Holmes, M.
name: Stitzenberg, K.
name: Wolff, R.
name: McDaniel, P.
Publisher: name: Springer Science and Business Media Deutschland GmbH
Year: 2021

description: Purpose: SEER data are widely used to study rural–urban disparities in cancer. However, no studies have directly assessed how well the rural areas covered by SEER represent the broader rural United States. Methods: Public data sources were used to calculate county level measures of sociodemographics, health behaviors, health access and all cause cancer incidence. Driving time from each census tract to nearest Commission on Cancer certified facility was calculated and analyzed in rural SEER and non-SEER areas. Results: Rural SEER and non-SEER counties were similar with respect to the distribution of age, race, sex, poverty, health behaviors, provider density, and cancer screening. Overall cancer incidence was similar in rural SEER vs non-SEER counties. However, incidence for White, Hispanic, and Asian patients was higher in rural SEER vs non-SEER counties. Unadjusted median travel time was 53 min (IQR 34–82) in rural SEER tracts and 54 min (IQR 35–82) in rural non-SEER census tracts. Linear modeling showed shorter travel times across all levels of rurality in SEER vs non-SEER census tracts when controlling for region (Large Rural: 13.4 min shorter in SEER areas 95% CI 9.1;17.6; Small Rural: 16.3 min shorter 95% CI 9.1;23.6; Isolated Rural: 15.7 min shorter 95% CI 9.9;21.6). Conclusions: The rural population covered by SEER data is comparable to the rural population in non-SEER areas. However, patients in rural SEER regions have shorter travel times to care than rural patients in non-SEER regions. This needs to be considered when using SEER-Medicare to study access to cancer care.
Assessment of Long Acting and Permanent Contraceptive Methods Utilization and Associated Factors among Female Antiretroviral Therapy Attendees in Gondar Town, North West Ethiopia, 2014
Creators: name: Demessew, Yordanos
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2014

description: Background: The prevalence of unintended pregnancy is high among HIV-positive women. Although there is higher motivation among HIV-positive women to avoid unintended pregnancy and desire for use of highly effective contraception, long acting and permanent contraceptive methods usage remained low. Preventing unintended pregnancy among women living with HIV is an important component of prevention of mother-to –child transmission (PMTCT), yet only a little is known about LAPMs use among women who are on ART in Gondar town, North West Ethiopia. Objective: To determine long acting and permanent contraceptive methods utilization and associated factors among female antiretroviral therapy attendees in Gondar town, North West Ethiopia, 2014 Method: Institution based cross-sectional study was conducted by interviewing 480 women of reproductive age (15–49years) that were selected using systematic random sampling technique from a list of ART attendees in government health facilities. Structured and pretested Interviewer administered questionnaire was used to obtain information from the respondents. Descriptive, bivariate, and multivariate methods were used to analyze utilization of LAPMs and the factors associated with LAPMs utilization. Result: Two hundred fifty six (85.0%) of the sexually active women were using some modern form of contraception. The current utilization rate of LAPMs (alone or with condom) was 62(24.1%). Women who had high knowledge [AOR=2.59, 95% CI [1.04, 6.45] and ever had been pregnant since the commencement of ART [AOR= 2.68, 95%CI [1.21, 5.93] had an increased odds of using LAPMs. Moreover, those women who had discussion about family planning with health care provider [AOR=2.69, 95% CI [1.18, 6.15] were more likely to use LAPMs. Conclusion and recommendation: The finding discloses that the general usage of contraceptive amongst sexually active women on ART was high though specific usage of LAPMs was found to be low. Based on the finding, there is a need to improve the implementation of integrated Family Planning service with ART service and improve counseling service that emphasized on LAPMs use
Ferromagnetism and Metal-Insulator transition in F-doped LaMnO3
Creators: name: Yadav, Ekta
name: Ghising, Pramod
name: Rajeev, K. P.
name: Hossain, Z.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We present our studies on polycrystalline samples of fluorine doped LaMnO3 (LaMnO3-yFy). LaMnO2.5F0.5 exhibits remarkable magnetic and electrical properties. It shows ferromagnetic and metallic behavior with a high Curie temperature of ~ 239 K and a high magnetoresistance of -64. This drastic change in magnetic properties in comparison to pure LaMnO3 is ascribed to the presence of mixed-valence Mn ions driven by the F-doping at the O-sites, which enables double exchange (DE) in LMOF. Furthermore, the resistivity data exhibits two resistivity peaks at 239 K and 213 K, respectively. Our results point towards the possibility of multiple double exchange hopping paths of two distinct resistances existing simultaneously in the sample below 213 K.
Macroetra cera Londt 1994, sp. n.
Creators: name: Londt, Jason G. H.
Publisher: name: Zenodo
Year: 1994
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Asilidae
Macroetra
Macroetra cera

description: cera sp. n. First two antennal segments red-brown to black; dorsocentral macrosetae not extending well anterior of transverse suture (perhaps one pair only); abdomen variable, but frequently with orange dorsal parts; d genitalia as in Figs 37-39..... Material (NMSA - Type 1105): NAMIBIA: 2 ♂ (HT & PT): ' South West Africa 2617Cd / Bethanien Dist. 45 km. W. 1 Seeheim, 800 m. 19-ii-1974 1 ME Irwin, sandy river bank'; 3 ♂ 1 ♀ (PT), 54 km S Khorixas, 20043'S:14°49'E, 26.iii.1984, Londt & Stuckenberg; I ♂ 2? ♀ (PT), Keetmanshoop Dis!, Narubis, nr, Lowen River, 2618Dc, 20-ii-1974, Irwin; 1 cf (PT), Keetmanshoop Dis! 17 km / N. Griinau, 2718Bc, 30.i. 1974, Irwin; 1 cf (PT), Omaruru Dist., 50 km NW Omaruru, 211 SBa, S. ii.1974, Irwin; I cf (PT), near Seeheim [26°49'S: 17°47'E], \ 9.ii.1974, Lyneborg (ZMUC). SOUTH AFRICA: Cape Province: I cf 1 <;:> (PT), 26 km N Kenhardt, 2921 Aa, 29. i.1974, Irwin. Etymology: Gr. n. kem;a - antenna (refers to antennal form).
description: Published as part of Londt, Jason G. H., 1994, Afrotropical Asilidae (Diptera) 25. A key to the genera of the subfamily Stenopogoninae with new synonymy and descriptions of six new genera, pp. 71-96 in ANNALS OF THE NATAL MUSEUM 35 on pages 84-85, DOI: 10.5281/zenodo.8360701
EPR [i.e. electron paramagnetic resonance] analysis and site symmetry
Creators: name: Lowrey., Ross
Publisher: name: Monash University
Year: 2021

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Flux pinning in Type II superconductors
Creators: name: Lowe., Don
Publisher: name: Monash University
Year: 2021

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Bootstrapping Non-Invertible Symmetries
Creators: name: Lin, Ying-Hsuan
name: Shao, Shu-Heng
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Using the numerical modular bootstrap, we constrain the space of 1+1d CFTs with a finite non-invertible global symmetry described by a fusion category $\mathcal{C}$. We derive universal and rigorous upper bounds on the lightest $\mathcal{C}$-preserving scalar local operator for fusion categories such as the Ising and Fibonacci categories. These numerical bounds constrain the possible robust gapless phases protected by a non-invertible global symmetry, which commonly arise from microscopic lattice models such as the anyonic chains. We also derive bounds on the lightest $\mathcal{C}$-violating local operator. Our bootstrap equations naturally arise from a "slab construction", where the CFT is coupled to the 2+1d Turaev-Viro TQFT, also known as the Symmetry TFT.
description: 28 pages + references
Role of structure in the alpha and beta dynamics of a simple glass-forming liquid
Creators: name: Fragiadakis, D.
name: Roland, C. M.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: The elusive connection between dynamics and local structure in supercooled liquids is an important piece of the puzzle in the unsolved problem of the glass transition. The Johari-Goldstein beta relaxation, ubiquitous in glass-forming liquids, exhibits mean properties that are strongly correlated to the long-time alpha dynamics. However, the former comprises simpler, more localized motion, and thus has perhaps a more straightforward connection to structure. Molecular dynamics simulations were carried out on a two-dimensional, rigid diatomic molecule (the simplest structure exhibiting a distinct beta process) to assess the role of the local liquid structure on both the Johari-Goldstein beta and the alpha relaxation. Although the average properties for these two relaxations are correlated, there is no connection between the beta and alpha properties of a given (single) molecule. The propensity for motion at long times is independent of the rate or strength of a molecule's beta relaxation. The mobility of a molecule averaged over many initial energies, a measure of the influence of structure, was found to be heterogeneous, with clustering at both the beta and alpha timescales. This heterogeneity is less extended spatially for the beta than for the alpha dynamics, as expected; however, the local structure is the more dominant control parameter for the beta prcoess. In the glassy state, the arrangement of neighboring molecules determines entirely the relaxation properties, with no discernible effect from the particle momenta.
description: 9 pages, 8 figures
Supervised topological data analysis for MALDI mass spectrometry imaging applications
Creators: name: Klaila, Gideon
name: Vutov, Vladimir
name: Stefanou, Anastasios
Publisher: name: arXiv
Year: 2023
Subjects: subject: Machine Learning (stat.ML)
subject: Machine Learning (cs.LG)
subject: Signal Processing (eess.SP)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Background: Matrix-assisted laser desorption/ionization mass spectrometry imaging (MALDI MSI) displays significant potential for applications in cancer research, especially in tumor typing and subtyping. Lung cancer is the primary cause of tumor-related deaths, where the most lethal entities are adenocarcinoma (ADC) and squamous cell carcinoma (SqCC). Distinguishing between these two common subtypes is crucial for therapy decisions and successful patient management. Results: We propose a new algebraic topological framework, which obtains intrinsic information from MALDI data and transforms it to reflect topological persistence. Our framework offers two main advantages. Firstly, topological persistence aids in distinguishing the signal from noise. Secondly, it compresses the MALDI data, saving storage space and optimizes computational time for subsequent classification tasks. We present an algorithm that efficiently implements our topological framework, relying on a single tuning parameter. Afterwards, logistic regression and random forest classifiers are employed on the extracted persistence features, thereby accomplishing an automated tumor (sub-)typing process. To demonstrate the competitiveness of our proposed framework, we conduct experiments on a real-world MALDI dataset using cross-validation. Furthermore, we showcase the effectiveness of the single denoising parameter by evaluating its performance on synthetic MALDI images with varying levels of noise. Conclusion: Our empirical experiments demonstrate that the proposed algebraic topological framework successfully captures and leverages the intrinsic spectral information from MALDI data, leading to competitive results in classifying lung cancer subtypes. Moreover, the frameworks ability to be fine-tuned for denoising highlights its versatility and potential for enhancing data analysis in MALDI applications.
description: 22 pages, 10 figures
Μοντελοποίηση και μελέτη λειτουργίας οπτικού δικτύου XG-PON
Creators: name: Πιμίσχος, Ιωάννης Μιχαήλ
Publisher: name: Aristotle University of Thessaloniki
Year: 2022
Subjects: Οπτικά Δίκτυα
XG-PON (Παθητικό Οπτικό Δίκτυο)
OMNeT++
Optical Networks
XG-PON (10Gigabit - Passive Optical Network)

description: Η παρούσα διπλωματική εργασία έχει ως σκοπό την μελέτη και ανάλυση ενός οπτικού δικτύου XG-PON ως προς την απόδοσή του και η διεκπεραίωσή της πραγματοποιήθηκε σε συνεργασία με την NOKIA Ελλάδας. Η μέτρηση της απόδοσης γίνεται με βάση τις παραμέτρους: τη ρυθμαπόδοση του δικτύου, την μέση χρονική καθυστέρηση από άκρο σε άκρο και την τυπική της απόκλιση (timing jitter). Μια ακόμα παράμετρος που επιδρά στο δίκτυο είναι το σημείο κορεσμού ή συμφόρησης του δικτύου, όπου για υψηλά επίπεδα κίνησης η απόδοση του δικτύου επηρεάζεται άμεσα. Η υλοποίηση του XG-PON δικτύου έγινε με την χρήση του λογισμικού προσομοίωσης OMNeT++ ακολουθώντας τις συστάσεις του πρωτοκόλλου G.987 του οργανισμού ITU-Τ. Τα αποτελέσματα που θα παρουσιαστούν έχουν προκύψει για συνδεσμολογίες των 2,16,32,64 και 128 μονάδων ONU και έχουν ως σκοπό να αναδείξουν τα σημεία της βέλτιστης λειτουργίας του δικτύου, αλλά και τα σημεία όπου προκύπτει μεγάλη συμφόρηση με αποτέλεσμα να υπάρχουν συνέπειες στη διατήρηση της ποιότητας των υπηρεσιών σε υψηλά επίπεδα
description: The aim of this diploma thesis is to study and analyze the performance of a XG-PON network. The performance of the XG-PON network has been evaluated for a number of different network parameters, concluding to relevant metrics like throughput, mean end-to-end delay and standard deviation (jitter). Another parameter that affects the network is the congestion point of the network, which can have an important impact on the network performance. The implementation of the XG-PON network was done using the OMNeT ++ simulation software and following the recommendations of the G.987 protocol of the ITU-T. The results that will be presented have been obtained for XG-PON networks with 2,16,32,64 and 128 ONU units and aim to highlight the points of optimal operation of the network, but also the points where there is great network congestion, thus affecting the quality of services
Classifying orbits of low and high energy stars in axisymmetric disk galaxies
Creators: name: Zotos, Euaggelos E.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: The ordered or chaotic character of orbits of stars moving in the meridional $(R,z)$ plane of an analytic axisymmetric time-independent disk galaxy model with an additional spherically symmetric central nucleus is investigated. Our aim is to determine how the total energy influences the orbital structure of the galaxy. For this purpose we monitor how the percentage of chaotic orbits as well as the rates of orbits composing the main regular families evolve as a function of the value of the energy. In order to distinguish with certainty between chaotic and ordered motion we use the SALI method in extensive sets of initial conditions of orbits. Moreover, a spectral method is applied for identifying the various regular families and also for recognizing the secondary resonances that bifurcate from them. Our numerical computations suggest that for low energy levels the observed amount of chaos is high and the orbital content is rather poor, while for high energy levels, corresponding to global motion, regular motion dominates and many secondary higher resonances emerge. We also compared our results with previous related work.
description: Published in Baltic Astronomy journal. arXiv admin note: previous paper with related context: arXiv:1501.06699
hpc.bw benchmark report 2022–2024
Creators: name: Preuß, Hauke
name: De Nayer, Guillaume
name: Das Sharma, Amartya
name: Jarmatz, Piet
name: Leinen, Willi Günter
name: Jafari, Vahid
name: Horn, Ruben
name: Breuer, Michael
name: Fink, Andreas
name: Neumann, Philipp
Publisher: name: UB HSU
Year: 2024
Subjects: subject: dtec.bw
subject: High performance computing
subject: HPC
subject: 004 Informatik

description: In the scope of the dtec.bw project hpc.bw, innovative HPC hardware resources were procured to investigate their performance for HSU-relevant compute-intensive software. Benchmarks for different software packages were conducted, and respective results are reported and documented in the following, considering the Intel Xeon architecture used in the HPC cluster HSUper, AMD EPYC 7763 and ARM FX700.
Πρόληψη της χρήσης ψυχοδραστικών ουσιών στο χώρο εργασίας
Creators: name: Δημητριάδου, Ευδοξία Κωνσταντίνου
Publisher: name: Aristotle University of Thessaloniki
Year: 2022
Subjects: χρήση ψυχοδραστικών ουσιών
πρωτογενής πρόληψη
χρήση στο χώρο εργασίας
substance use
primary prevention
substance use at workplace

description: Ο χώρος εργασίας είναι ένα σημαντικό αλλά αναξιοποίητο έως σήμερα πεδίο εφαρμογής πρόληψης χρήσης ψυχοδραστικών ουσιών. Oι περισσότεροι χρήστες ψυχοδραστικών ουσιών συμμετέχουν στην αγορά εργασίας, η χρήση ψυχοδραστικών ουσιών επηρεάζει αρνητικά την υγεία, ασφάλεια και παραγωγικότητα, χώρος εργασίας μπορεί να λειτουργήσει ως σημείο προσέγγισης γονέων με σκοπό την πρόληψη της χρήσης ουσιών από τα παιδιά τους και τέλος, η εργασία μπορεί να είναι ένας από τους αιτιολογικούς ή επιβαρυντικούς παράγοντες της χρήσης ψυχοδραστικών ουσιών. Η συγκεκριμένη μελέτη δεν αρκείται σε απλή παράθεση παρεμβάσεων καθολικής, επικεντρωμένης και ενδεδειγμένης πρόληψης στο χώρο εργασίας, αλλά προβαίνει στη διερεύνηση του θεωρητικού της υπόβαθρου, των ερευνητικών δεδομένων αποτελεσματικότητας που την καθιστούν επιστημονικά τεκμηριωμένη και του ρόλου της ως εξωτερικού κινήτρου για αλλαγή. Η υιοθέτηση αυτών των παρεμβάσεων πρόληψης στο χώρο εργασίας από την ελληνικούς αρμόδιους φορείς λαμβάνοντας υπόψη την εθνική νομοθεσία καθώς και τα εμπόδια υλοποίησής τους θα συνδράμει στην αλλαγή νοοτροπίας πρόληψης και στη διεύρυνση των συστημάτων πρόληψης στο πλαίσιο της φιλοσοφίας της πρόσφατης έννοιας της συνηγορίας
description: The workplace is an important but still unutilized field of substance use prevention. Most users are working adults, the substance use adversely affects health, safety and productivity, the workplace can serve as a place where parents can be reached aiming at their children’s substance use prevention. and lastly, workplace can be one of the causal or contributing factors of substance use. This study not only refers to universal, selective and indicated prevention interventions at workplace, but also analyses its theoretical background, research data on effectiveness that render it evidence-based and its role as external motivation for change. The adoption of these prevention practices at workplace by the greek institutions taking into account the national legislation as well as the barriers to their implementation will help towards a change of prevention culture and contribute to expansion of prevention systems
Understanding and identifying immortal-time bias in surgical health services research: An example using surgical resection of stage IV breast cancer
Creators: name: Strassle, P.D.
name: Reeder-Hayes, K.E.
name: Jackson, B.E.
name: Lund, J.L.
name: Greenup, R.A.
name: Deal, A.M.
name: Baggett, C.D.
Publisher: name: Elsevier Ltd
Year: 2021

description: This article presents an overview of how to recognize and address the challenges of immortal time bias using surgical resection of the primary tumor for stage IV female breast cancer patients as a real world example. Surgical health services researchers are increasingly utilizing observational data to assess associations between treatments and outcomes, especially since some procedures are unable to be evaluated through randomized controlled trials. However, the results of many of these studies may be affected by the presence of immortal-time bias, which exists when treatment does not occur on Day 0 of the study. This bias can result in researchers overestimating a treatment benefit, or even observe a treatment benefit when none exists. In this paper, we describe what immortal-time bias is, the challenges it presents, and how to recognize and address it using the real-world example of surgical resection of the primary tumor for stage IV breast cancer throughout. In our example, we guide researchers and illustrate how the early studies, which did not account for immortal-time bias, suggested a protective benefit of surgery, and how these results were supplanted by more recent studies through identifying and addressing immortal-time bias in their design and analyses
Determinants and Causes of Adult Mortality in Butajira
Creators: name: Lulu, Kidest
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2000

description: Information on adult mortality is essentially non-existent in Ethiopia as in the rest of subSaharan Africa. This nested case-control study was conducted with the aim of assessing sociodemographic and behavioural factors associated with adult death in Butajira, Ethiopia. All deaths in the age-group 15-49 years during 1995-99 were taken as cases and unmatched controls of age 15-49 years were selected randomly from the computerized demographic surveillance database. Data were collected by lay interviewers using a simpli fied verbal autopsy questionnaire. Crude and adjusted odds ratio with 95% confidence interval were calculated to determine associations. Causes of death were diagnosed using an "expert algorithm" programmed into a computer. A total of 515 deaths and 1507 controls were interviewed. The major determinants of mortality identified are age-groups 30-39 and 40-49 years (OR 2.99, 95%CI 1.91-4.71 and OR 4.01, 95%CI 2A9-6A6), male sex (OR 1 A6, 95%CI 1.09-1.95), living in a rural lowland area (OR 1.54, 95%CI 1.03-231), single marital status (OR 1.63, 95%CI 1.13-2.35), having no educated person in the family (OR 1.91 , 95%CI 1.11-3.29), being unemployed (OR 1 AO, 95%CI 1.01-1.82), and poor and very poor perceived economic status (OR 1.97, 95%CI IJ 1-2.94 and OR 2.98, 95%CI 173-5.13). The major causes of death observed were acute febri le illnesses (25.2%), liver diseases (11.3%), diarrhoeal diseases (11.1 %), tuberculosis (9.7%) and HIY/AIDS (7A%). Communicable diseases accounted for 60.8% of the deaths. The factors associated with mortality and the high level of mortality from communicable diseases reflect the poor socioeconomic development of the country and inadequate coverage VI as a whole in education, health and poverty allevi ation . Therefore, eff0I1s should be directed at planning and implementing cost-effective interventions to decrease morbidity and mortality particularly from communicable diseases. Emphasis needs to be given also to poverty alleviation programmes.
Phosphorus sources, forms and mobility in the Latrobe River catchment
Creators: name: Lovell., Belinda
Publisher: name: Monash University
Year: 2021

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Microphontes Londt 1994, gen. n.
Creators: name: Londt, Jason G. H.
Publisher: name: Zenodo
Year: 1994
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Asilidae
Microphontes

description: Microphontes gen. n. Type species: Microphontes whittingtoni sp, n. Description: Small, brown-yellow, silver-gold pruinose stenopogonine asilids with the following combination of characters: Head (Fig. 43): blackish; clearly wider than high in anterior view. Antenna: yellow; scape same length as pedicel, segment 3 ca. twice as long as scape and pedicel combined, style terminal, small, cylindrical with spine-like seta. Mystax shiny white, confined to lower/of plane face; palpi 2-segmented, Thorax: mesonotum with 3 broad, black, longitudinal bands (central one reaching anterior margin); postmetacoxal area membranous; anepimeral bristle absent; ca, 3-4 pairs marginal scutellar macrosetae, disc bare. Wing (Fig. 44): ca. 3 mm long, transparent, immaculate, uniform rnicrotrichial cover, C extends around entire wing margin, cells m] and cup open at wing margin. Legs: pulvilli and empodia well developed. Abdomen: ♂ terminalia rotated through 90--180°; ♂ epandrial lobes separate (hardly touching basally); hypandrium moderately developed with elongate, triangular mediodistallobe. Etymology: Gr. m. mikros - small + phontes - slayer (refers to the small size of this assassin fly).
description: Published as part of Londt, Jason G. H., 1994, Afrotropical Asilidae (Diptera) 25. A key to the genera of the subfamily Stenopogoninae with new synonymy and descriptions of six new genera, pp. 71-96 in ANNALS OF THE NATAL MUSEUM 35 on page 86, DOI: 10.5281/zenodo.8360701
Static and rotating solutions for Vector-Galileon theories
Creators: name: Cisterna, Adolfo
name: Hassaine, Mokhtar
name: Oliva, Julio
name: Rinaldi, Massimiliano
Publisher: name: arXiv
Year: 2016
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider a particular truncation of the generalized Proca field theory in four dimensions for which we construct a static and axisymmetric rotating black hole "stealth solutions", namely solutions with (Anti) de Sitter or Kerr metric but non-trivial vector field. The static configuration is promoted to a backreacting black hole with asymptotic (Anti) de Sitter behavior by turning on a nonlinear electrodynamic source given as a fixed power of the Maxwell invariant. Finally we extend our solutions to arbitrary dimensions.
A platform for in situ synthesis in a STEM
Creators: name: Dyck, Ondrej
name: Lupini, Andrew R.
name: Jesse, Stephen
Publisher: name: arXiv
Year: 2023
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The engineering of quantum materials requires the development of tools able to address various synthesis and characterization challenges. These include the establishment and refinement of growth methods, material manipulation, and defect engineering. Material modification at the atomic level will be a key enabling factor for the engineering of quantum materials where desired phenomena are critically determined by local atomic structures. Successful use of scanning transmission electron microscopes (STEMs) for atomic scale material manipulation has opened the door for a transformed view of what can be accomplished using electron-beam-based strategies. However, serious obstacles exist on the pathway from possibility to practical reality. One such obstacle is the in situ delivery of atomized material in the STEM to the region of interest for further fabrication processes. Here, we present progress on this front with a view toward performing synthesis (deposition and growth) processes in a scanning transmission electron microscope. An in situ thermal deposition platform is presented, tested, and deposition and growth processes are demonstrated. In particular, we show that isolated Sn atoms can be evaporated from a filament and caught on the nearby sample, demonstrating atomized material delivery. This platform, and future variations, are envisioned to facilitate real-time atomic resolution imaging of growth processes and open new pathways toward atomic fabrication.
Transition metal catalysed additions of small molecules to alkenes and alkynes
Creators: name: Lovel., Graig Gordon
Publisher: name: Monash University
Year: 2021

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Magnitude of common enteric bacteria and their Antimicrobial susceptibility pattern among governmental school children in a de-worming setting at Sululta, North Shewa, Oromia, Ethiopia.
Creators: name: Mesfin, Abiyot
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2017

description: Back ground: Current de-worming programs focus solely on reducing the morbidity caused by helminthes and often fail to monitor for indirect consequences of treatment on other pathogens. As human health reflects integrated impact of infectious agents to which hosts are exposed, it is crucial to monitor for unintended effects of mass drug treatments in co-infected populations. Objective: To assess the magnitude of common enteric bacteria and their antimicrobial susceptibility patterns among governmental school children in a setting of mass de-worming Methods: A school based cross sectional study was conducted in three primary schools from April to June 2017 in Sululta, Oromia, Ethiopia. A structured questionnaire was used for data collection on socio-demographic characteristics of parents as well as for children. A total of 249 de-wormed and 88 non de-wormed school children were enrolled. Stool specimen was collected and cultured on primary isolation media and antimicrobial susceptibility patterns were done for bacteria with CLSI guideline. Data was entered and analyzed using SPSS version 21. Results: Overall prevalence of enteric pathogen (intestinal parasite and bacterial) was 112(33.2%).From theses, 34(10.1%) were bacterial, 33(9.8%) were protozoa and 46(26.1%) were helminthes. 83 (33.3%) of the pathogens were from de-wormed group, of which 25(10%) were bacteria, 27(10.8%) protozoa and 31(12.4%) were of helminthes origins. The rest 29(32.9%) were detected from non de-wormed group which were 9(10.2%) bacteria, 5(6%) protozoa and 15(17%) helminthes). No statistically significant difference was noted between de-wormed and non-de-wormed groups with isolated bacteria. The dominant bacterial isolates were Salmonella spp. and E.coli O157 from pathogenic one and the least one was Shigella spp. All isolates showed 100% resistance to Ampicilin (10μg), but susceptible to nalidixic acid, Ciprofloxacin and cefteriaxone. Conclusion: Overall prevalence of enteric bacteria was 34(10.1%) and magnitude of the common enteric pathogens among de-wormed and non de-wormed school children was relatively similar. Antibiotics like nalidixic acid, Ciprofloxacin and cefteriaxone are active against isolated pathogenic bacteria. Broad surveillance is needed to see the effect of mass de-worming and rational use of antibiotics should be encouraged.
Microphontes safra Londt 1994
Creators: name: Londt, Jason G. H.
Publisher: name: Zenodo
Year: 1994
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Asilidae
Microphontes
Microphontes safra

description: safra sp, n. Abdomen elongate (clearly longer than wings; most tergites longer than wide in dorsal view); gonocoxite at least 2 times longer than deep in lateral view; ♂ genitalia as in Figs 48-50................................................................... Material (NMSA - Type 1106): NAMIBIA: 1 ♂ (HT) 2 ♀ (PT): ' South West Africa 2516Ac / Maltahohe Dist. Aandster / Farm, 1000 m. 16-II-1974 / ME Irwin, vegetated dune / and grassland'; 1 ♂ (PT), Maltahohe Dist., Aandster Farm, 2515Bd, 17.ii. l974, Lyneborg (ZMUC). Etymology: Ar. safra - yellow (refers to overall yellowish coloration).
description: Published as part of Londt, Jason G. H., 1994, Afrotropical Asilidae (Diptera) 25. A key to the genera of the subfamily Stenopogoninae with new synonymy and descriptions of six new genera, pp. 71-96 in ANNALS OF THE NATAL MUSEUM 35 on page 86, DOI: 10.5281/zenodo.8360701
Capabilities of long-baseline experiments in the presence of a sterile neutrino
Creators: name: Dutta, Debajyoti
name: Gandhi, Raj
name: Kayser, Boris
name: Masud, Mehedi
name: Prakash, Suprabh
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Assuming that there is a sterile neutrino, we ask what then is the ability of long-baseline experiments to i) establish that neutrino oscillation violates CP, ii) determine the three-neutrino mass ordering, and iii) determine which CP-violating phase or phases are the cause of any CP violation that may be observed. We find that the ability to establish CP violation and to determine the mass ordering could be very substantial. However, the effects of the sterile neutrino could be quite large, and it might prove very difficult to determine which phase is responsible for an observed CP violation. We explain why a sterile neutrino changes the long-baseline sensitivities to CP violation and to the mass ordering in the ways that it does. We note that long-baseline experiments can probe the presence of sterile neutrinos in a way that is different from, and complementary to, the probes of short-baseline experiments. We explore the question of how large sterile-active mixing angles need to be before long-baseline experiments can detect their effects, or how small they need to be before the interpretation of these experiments can safely disregard the possible existence of sterile neutrinos.
description: Published in JHEP, 24 pages, 12 figures, IH results added
Ανάπτυξη και επικύρωση αναλυτικής μεθόδου για τον προσδιορισμό της ιστιδίνης σε ανθρώπινο σίελο με την υγρή χρωματογραφία υψηλής πίεσης σε συνδιασμό με παραγωγοποίηση μετά τη στήλη
Creators: name: Γκαντίρη, Αννα Μαρία Απόστολου
Publisher: name: Aristotle University of Thessaloniki
Year: 2022
Subjects: Χρωματογραφία
Παραγωγοποίηση μετά τη στήλη
Ιστιδίνη
Chromatography
Post-column derivatization
Histidine

description: Στην παρούσα έρευνα περιγράφεται η ανάπτυξη, βελτιστοποίηση, επικύρωση και εφαρμογή μιας πλήρως αυτοματοποιημένης μεθόδου για τον για τον προσδιορισμό της ενδογενούς ιστιδίνης σε ανθρώπινο σίελο, με την τεχνική της υγρής χρωματογραφίας υψηλής πίεσης. Η ιστιδίνη διαχωρίστηκε από το υπόστρωμα του σιέλου με χρωματογραφία κατιοντοανταλλαγής και ανιχνεύθηκε φθορισμομετρικά μετά από on-line, ειδική αντίδραση παραγωγοποίησης μετά τη στήλη (PCD) με ο-φθαλαλδεΰδη (OPA). Η ιστιδίνη αντιδρά με την οφθαλαλδεΰδη (ΟΡΑ) σε ελαφρώς αλκαλικό περιβάλλον, απουσία πυρηνόφιλου αντιδραστηρίου, για να σχηματίσει ένα φθορίζον παράγωγο. Οι μεταβλητές της αντίδρασης παραγωγοποίησης μετά την στήλη βελτιστοποιήθηκαν χρησιμοποιώντας Πειραματικό Σχεδιασμό Box–Behnken για να επιτευχθεί η μέγιστη ευαισθησία. Η επικύρωση της μεθόδου πραγματοποιήθηκε χρησιμοποιώντας την έννοια του συνολικού σφάλματος (total-error). Η γραμμικότητα βρέθηκε στην περιοχή των 0,5–5,0 μΜ με όριο ανίχνευσης LOD 50 nM. Η απουσία της επίδρασης του υποστρώματος επέτρεψε την επεξεργασία πραγματικών δειγμάτων μετά από ελάχιστη προκατεργασία. Χρησιμοποιήθηκαν προσομοιώσεις Monte Carlo και ανάλυση ικανότητας για τη διερεύνηση της ανθεκτικότητας της αντίδρασης της παραγωγοποίησης. Διερευνήθηκε επίσης η στρατηγική δειγματοληψίας, η προετοιμασία του δείγματος και η σταθερότητα. Δεκαεπτά δείγματα σάλιου αναλύθηκαν με επιτυχία με τα επίπεδα ιστιδίνης να κυμαίνονται από 2,7–19,5 μΜ.
description: Τhe present study reports a simple and reliable method for the determination of endogenous histidine in human saliva, using the technique of high pressure liquid chromatography, was optimized and validated during the present study. Histidine was separated from the saliva matrix by cation exchange chromatography and detected fluorimetrically after on-line, specific post-column derivatization (PCD) reaction with o-phthalaldehyde. Histidine reacts with ophthalmaldehyde (OPA) in a slightly alkaline environment, in the absence of a nucleophilic reagent, to form a fluorescent derivative. The chemical and instrumental variables of the post-column reaction were optimized using Box–Behnken experimental design to achieve maximum sensitivity. Method validation was carried out employing the total-error concept. Histidine could be analyzed reliably in the range of 0.5–5.0 μΜ, with an LOD of 50 nM. The absence of matrix effect enables the use of the aqueous calibration curve for quantification. Monte Carlo simulations and capability analysis were used to investigate the ruggedness of the PCD reaction. The sampling strategy, sample preparation and stability were also investigated. Seventeen saliva samples were successfully analyzed with histidine levels being in the range of 2.7–19.5 μΜ.
Paramater Optimization for Manipulator Motion Planning using a Novel Benchmark Set
Creators: name: Gaebert, Carl
name: Kaden, Sascha
name: Fischer, Benjamin
name: Thomas, Ulrike
Publisher: name: arXiv
Year: 2023
Subjects: subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: Sampling-based motion planning algorithms have been continuously developed for more than two decades. Apart from mobile robots, they are also widely used in manipulator motion planning. Hence, these methods play a key role in collaborative and shared workspaces. Despite numerous improvements, their performance can highly vary depending on the chosen parameter setting. The optimal parameters depend on numerous factors such as the start state, the goal state and the complexity of the environment. Practitioners usually choose these values using their experience and tedious trial and error experiments. To address this problem, recent works combine hyperparameter optimization methods with motion planning. They show that tuning the planner's parameters can lead to shorter planning times and lower costs. It is not clear, however, how well such approaches generalize to a diverse set of planning problems that include narrow passages as well as barely cluttered environments. In this work, we analyze optimized planner settings for a large set of diverse planning problems. We then provide insights into the connection between the characteristics of the planning problem and the optimal parameters. As a result, we provide a list of recommended parameters for various use-cases. Our experiments are based on a novel motion planning benchmark for manipulators which we provide at https://mytuc.org/rybj.
description: 9 pages