cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Consistently faster and smaller compressed bitmaps with Roaring
Creators: name: Lemire, Daniel
name: Ssi-Yan-Kai, Gregory
name: Kaser, Owen
Publisher: name: arXiv
Year: 2016
Subjects: subject: Databases (cs.DB)
subject: FOS: Computer and information sciences

description: Compressed bitmap indexes are used in databases and search engines. Many bitmap compression techniques have been proposed, almost all relying primarily on run-length encoding (RLE). However, on unsorted data, we can get superior performance with a hybrid compression technique that uses both uncompressed bitmaps and packed arrays inside a two-level tree. An instance of this technique, Roaring, has recently been proposed. Due to its good performance, it has been adopted by several production platforms (e.g., Apache Lucene, Apache Spark, Apache Kylin and Druid). Yet there are cases where run-length encoded bitmaps are smaller than the original Roaring bitmaps---typically when the data is sorted so that the bitmaps contain long compressible runs. To better handle these cases, we build a new Roaring hybrid that combines uncompressed bitmaps, packed arrays and RLE compressed segments. The result is a new Roaring format that compresses better. Overall, our new implementation of Roaring can be several times faster (up to two orders of magnitude) than the implementations of traditional RLE-based alternatives (WAH, Concise, EWAH) while compressing better. We review the design choices and optimizations that make these good results possible.
Who Belongs? Becoming Tribal Members in the South
Creators: name: Adams, Mikaëla M.
Publisher: name: University of North Carolina at Chapel Hill
Year: 2012

description: As a third race in the Jim Crow South, Indians struggled to maintain their political sovereignty and separate identity in the face of racial legislation and discrimination. To protect their status as tribal members and to defend their resources from outsiders, Indians developed membership criteria that reflected their older notions of kinship and culture, but also the new realities of a biracial world. This dissertation examines the responses of four southeastern Indian peoples to the problem of defining who legally belonged to Indian tribes. Although the Pamunkeys, Catawbas, Eastern Band of Cherokees, and Florida Seminoles dealt with similar questions regarding reservation residency, cultural affinity, intermarriage, blood, and race, each developed different requirements for tribal membership based on their unique histories and relationships with federal and state officials. The varying experiences of these southeastern tribes belie the notion of an essential Indian, and instead show that membership in a tribe is a historically-constructed and constantly-evolving process.
Gravity and On-Shell Probe Actions
Creators: name: Ferrari, Frank
name: Rovai, Antonin
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In any gravitational theory and in a wide class of background space-times, we argue that there exists a simple, yet profound, relation between the on-shell Euclidean gravitational action and the on-shell Euclidean action of probes. The probes can be, for instance, charged particles or branes. The relation is tightly related to the thermodynamic nature of gravity. We provide precise checks of the relation in several examples, which include both asymptotically flat and asymptotically AdS space-times, with particle, D-brane and M-brane probes. Perfect consistency is found in all cases, including in a highly non-trivial example including α'-corrections.
description: 45 pages, 1 figure; v2: list of references updated; v3: typos corrected, a few explanations and a remark on bubbling geometries added, published version
Diagnosis: The Buck Starts Here, the Role of Diagnosis in Three Areas of Modern Medicine
Creators: name: Nair, Prashant
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2009

description: This thesis examines the role of diagnosis—traditional and molecular—in three areas of medicine: personalized cancer treatment, treatment of infectious diseases and treatment of controversial disorders lacking unambiguous physiological bases. The thesis uses a mix of statistics, expert interviews and patient anecdotes to address in the form of three feature stories three aspects pertinent to the role of diagnosis in modern medicine. The first story addresses the challenges to developing diagnostic markers for truly personalized cancer therapy. The second story features a recent advance in molecular diagnostics that has transformed the treatment of infectious diseases, especially hitherto-unknown viral infections. The third story illustrates the plight of patients suffering from disorders whose very existence is controversial and for which doctors are unable to provide clear-cut diagnoses.
New hadron configuration: The double-gluon hybrid state
Creators: name: Chen, Hua-Xing
name: Chen, Wei
name: Zhu, Shi-Lin
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Lattice (hep-lat)
subject: Nuclear Experiment (nucl-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: This is the first study on the double-gluon hybrid, which consists of one valence quark and one valence antiquark together with two valence gluons. We concentrate on the one with the exotic quantum number $J^{PC} = 2^{+-}$ that conventional $\bar q q$ mesons can not reach. We apply QCD sum rule method to evaluate its mass to be $2.26^{+0.20}_{-0.25}$ GeV, and study its possible decay patterns. Especially, its three-meson decay patterns are generally not suppressed severely compared to two-meson decay patterns, so the $S$-wave three-meson decay channels $f_1ωπ/f_1ρπ$ can be useful in identifying its nature, which is of particular importance to the direct test of QCD in the low energy sector.
description: 5 pages, 3 figures, 1 table, revised version to be published in PRD
Position de l'Université de Lorraine sur les accords dits transformants
Creators: name: Bassinet, Aricia
name: Bouchet-Moneret, Florence
name: Delacour, Hélène
name: Dreyer, Erwin
name: Hahusseau, Rudy
name: Lentretien, Celia
name: Lutz, Jean-François
name: Maire, Laure-Hélène
name: Ramdani, Karim
name: Sadowska, Jozefina
Publisher: name: Zenodo
Year: 2023
Subjects: Publications scientifiques
Accords transformants
Science ouverte
Edition scientifique
Open access

description: Le texte émane du Comité opérationnel publications ouvertes (COPO) de l’Université de Lorraine (UL) et a été validé par le Comité de pilotage de la Science Ouverte ainsi que par le Conseil scientifique de l'établissement. Il a également fait l'objet d'une présentation au Conseil d'Administration.
 Il s'inscrit dans la stratégie Science Ouverte de l’établissement.
Examining the association between maternal and infant diet as a basis for early life obesity prevention
Creators: name: Kay, Melissa
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2017

description: Obesity continues to be a problem in the U.S. Of particular concern is the epidemic of early childhood obesity. Currently, 8.1% of infants and toddlers are considered obese, with rates higher among non-Hispanic black (NHB) compared to non-Hispanic white (NHW) children. Child diet and food preferences are shaped during infancy and evidence indicates infants are consuming foods and beverages associated with obesity. A significant predictor of child diet is maternal diet, but little is known about this relationship during infancy. Observational studies have suggested that infant feeding strategies such as breastfeeding and role modeling can influence infant diet, but few interventions focus on these modifiable practices during infancy. This study fills a gap in child obesity research by focusing on the development of diet during the first two years of life and uniquely targeting maternal dietary intake as a modifiable factor. Using two unique datasets, this study 1) examines maternal diet and explores predictors of intake; 2) determines the longitudinal association between maternal and infant diet and factors that moderate this relationship; and 3) examines barriers and facilitators to healthy eating during the first two years postpartum among mothers participating in a family-based obesity prevention trial.
The Analytic Renormalization Group
Creators: name: Ferrari, Frank
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: Finite temperature Euclidean two-point functions in quantum mechanics or quantum field theory are characterized by a discrete set of Fourier coefficients $G_{k}$, $k\in\mathbb Z$, associated with the Matsubara frequencies $ν_{k}=2πk/β$. We show that analyticity implies that the coefficients $G_{k}$ must satisfy an infinite number of model-independent linear equations that we write down explicitly. In particular, we construct "Analytic Renormalization Group" linear maps $\mathsf A_μ$ which, for any choice of cut-off $μ$, allow to express the low energy Fourier coefficients for $|ν_{k}|
description: 52 pages, 25 figures; v2: a few comments and explanations added
Detectability of the cross-correlation between CMB lensing and stochastic GW background from compact object mergers
Creators: name: Capurri, Giulia
name: Lapi, Andrea
name: Baccigalupi, Carlo
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The anisotropies of the Stochastic Gravitational-Wave Background (SGWB) produced by merging compact binaries constitute a possible new probe of the Large-Scale Structure (LSS). However, the significant shot noise contribution caused by the discreteness of the GW sources and the poor angular resolution of the instruments hamper the detection of the intrinsic anisotropies induced by the LSS. In this work, we investigate the potential of cross-correlating forthcoming high precision measurements of the SGWB energy density and the Cosmic Microwave Background (CMB) lensing convergence to mitigate the effect of shot noise. Combining a detailed model of stellar and galactic astrophysics with a novel framework to distribute the GW emitters in the sky, we compute the auto- and cross-correlation power spectra for the two cosmic fields, evaluate the shot noise contribution and predict the signal-to-noise ratio. The results of our analysis show that the SGWB energy density correlates significantly with the CMB lensing convergence and that the cross-correlation between these two cosmic fields reduces the impact of instrumental and shot noise. Unfortunately, the S/N is not high enough to detect the intrinsic SGWB anisotropies. Nevertheless, a network composed of both present and future generation GW interferometers, operating for at least 10 yrs, should be able to measure the shot noise contribution.
description: Improved treatment of intrumental noise. Acceped for publication in Universe Letters. 19 pages, 8 figures
Equilibrium properties of the mixed state in superconducting niobium in a transverse magnetic field: Experiment and theoretical model
Creators: name: Kozhevnikov, V.
name: Valente-Feliciano, A. -M.
name: Curran, P. J.
name: Richter, G.
name: Volodin, A.
name: Suter, A.
name: Bending, S.
name: Van Haesendonck, C.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Equilibrium magnetic properties of the mixed state in type-II superconductors were measured with high purity bulk and film niobium samples in parallel and perpendicular magnetic fields using dc magnetometry and scanning Hall-probe microscopy. Equilibrium magnetization data for the perpendicular geometry were obtained for the first time. It was found that none of the existing theories is consistent with these new data. To address this problem, a theoretical model is developed and experimentally validated. The new model describes the mixed state in an averaged limit, i.e. %without detailing the samples' magnetic structure and therefore ignoring interactions between vortices. It is quantitatively consistent with the data obtained in a perpendicular field and provides new insights on properties of vortices. % and the entire mixed state. At low values of the Ginzburg-Landau parameter, the model converts to that of Peierls and London for the intermediate state in type-I superconductors. It is shown that description of the vortex matter in superconductors in terms of a 2D gas is more appropriate than the frequently used crystal- and glass-like scenarios.
description: 8 pages, 9 figures
Δικαιοπρακτική ικανότητα των ατόμων με άνοια
Creators: name: Μουρατίδης, Ηλίας Βασιλείου
Publisher: name: Aristotle University of Thessaloniki
Year: 2023
Subjects: Δικαιοπρακτική ικανότητα
Άνοια
Αριστοτέλειο Πανεπιστήμιο Θεσσαλονίκης
Legal capacity
Dementia
Aristotle University of Thessaloniki

description: Στο πλαίσιο της παρούσας μεταπτυχιακής εργασίας επιχειρείται η παρουσίαση και αναλυτική εξέταση του ζητήματος της δικαιοπρακτικής ικανότητας των ατόμων με άνοια. Πιο συγκεκριμένα, εκκινώντας από τη θεωρητική προσέγγιση των θεμελιωδών εννοιών της δικαιοπρακτικής ικανότητας και της δικαιοπρακτικής ανικανότητας υπό το πρίσμα των Γενικών Αρχών του Αστικού Δικαίου, μελετάμε τα ζητήματα της ακυρότητας της δήλωσης βούλησης υπό το πρίσμα του άρθρου 131 ΑΚ, στις περιπτώσεις που ο επιχειρών μία δικαιοπραξία, κατά το χρονικό σημείο διατύπωσης της δήλωσης βούλησης, δεν είχε συνείδηση των πράξεων του ή ευρισκόταν σε ψυχική ή διανοητική διαταραχή, η οποία συνέβαλε στο σημαντικό περιορισμό της λειτουργίας της βούλησής του. Επιπροσθέτως, στο πλαίσιο της παρούσας εργασίας θα ερευνηθεί το ζήτημα των δικαιοπραξιών, που επιχειρούνται από ηλικιωμένα άτομα, ενώ ταυτοχρόνως θα εξετάζεται η σχέση μεταξύ του φυσιολογικού γήρατος και της άνοιας. Τέλος εξετάζονται τα ειδικότερα ζητήματα, που ανακύπτουν την έλλειψη δικαιοπρακτικής ικανότητας ατόμων που πάσχουν από άνοια, ιδίως δε η θέση ενός ατόμου με άνοια σε καθεστώς δικαστικής συμπαράστασης, τα νομιμοποιούμενα προς κατάθεση σχετικής αίτησης πρόσωπα, η διαδικασία ενώπιον του καθ’ ύλην και κατά τόπον αρμόδιου δικαστηρίου, ο διορισμός δικαστικού συμπαραστάτη καθώς και το ζήτημα της άρσης της ήδη κηρυχθείσας δικαστικής συμπαράστασης.
description: In the context of this postgraduate thesis, the presentation and detailed examination of the issue of the legal capacity of persons with dementia is attempted. More specifically, starting from the theoretical approach of the fundamental concepts of legal capacity and legal incapacity in the light of the General Principles of Civil Law,we study the issues of the invalidity of the declaration of will in the light of article 131 of the Civil Code, in cases where the legal entity, at the time of formulation of the declaration of will, was not aware of his actions or was in a mental or intellectual disorder, which contributed to the significant limitation of the function of his will. In addition, the present work will investigate the issue of legal acts, attempted by older people, while at the same time examining the relationship between normal aging and dementia. Finally, the more specific issues that arise from the lack of legal capacity of persons suffering from dementia are examined, in particular the position of a disabled person in a regime of legal aid,the persons entitled to file a relevant application, the procedure before the substantive and locally competent court, the appointment of a legal assistant as well as the issue of the removal of the already declared legal aid.
Προδιαθεσικοί παράγοντες υπασβεστιαιμίας μετά από ολική θυρεοειδεκτομή- συστηματική ανασκόπηση βιβλιογραφίας
Creators: name: Μανιατάκος, Βασίλειος Πέτρου
Publisher: name: Aristotle University of Thessaloniki
Year: 2023
Subjects: Υπασβεστιαιμία
Υποπαραθυρειδισμός
Ολική θυρεοειδεκτομή
Hypocalcemia
Hypoparathyroidism
Total thyroidectomy

description: Εισαγωγή: Μια από τις συχνότερες επιπλοκές της ολικής θυρεοειδεκτομής είναι η μετεγχειρητική υπασβεστιαιμία. Η πρόβλεψή της με την εκτίμηση συγκεκριμένων προγνωστικών παραγόντων θεωρείται ιδιαίτερης σημασίας για την μείωση της θνητότητας και της διάρκειας νοσηλείας. Σκοπός της παρούσας μελέτης είναι η συστηματική ανασκόπηση της υπάρχουσας βιβλιογραφίας που αφορά στην αξιολόγηση προγνωστικών παραγόντων για μετεγχειρητική υπασβεστιαιμία.Mέθοδος: Διενεργήθηκε συστηματική ανασκόπηση 97 μελετών. Οι προγνωστικοί παράγοντες που εξετάσθηκαν περιλαμβάνουν βιοχημικές παραμέτρους όπως επίπεδα ασβεστίου, παραθορμόνης (PTH), 25-υδροξυ-βιταμίνης D, κλινικές και χειρουργικές παραμέτρους όπως: τύπος επέμβασης, αναγνώριση παραθυρεοειδών αδένων, επανεπέμβαση, μέγεθος παρασκευάσματος θυρεοειδούς αδένα και παράγοντες του ασθενούς όπως: το φύλο και η ηλικία. Συμπεράσματα: Ο προσδιορισμός της περιεγχειρητικής τιμής PTH, της βιταμίνης D και του μετεγχειρητικού ασβεστίου αποτελούν χρήσιμους προγνωστικούς παράγοντες μετεγχειρητικής υπασβεστιαιμίας. Άλλοι παράγοντες όπως το γυναικείο φύλο, η μεγάλη ηλικία και η αναγνώριση λιγότερων από δύο παραθυρεοειδών αδένων διεγχειρητικά φαίνεται να διαδραματίζουν επίσης σημαντικό ρόλο στην εμφάνιση υπασβεστιαιμίας αλλά οφείλουν να διερευνηθούν περαιτέρω.
description: Introduction: One of the most frequent post-thyroidectomy complications is hypocalcaemia. Prediction of hypocalcaemia by assessing specific predictive factors is of outmost importance in order to reduce morbidity and duration of hospitalisation. The aim of the study is the systematic review of literature in predictive factors related to postoperative hypocalcaemia. Methods: Systematic literature review of Pubmed and Cochrane Library databases was performed and the quality of the articles included was assessed using NOS scale. Results: A systematic review of 97 studies was performed. The predictive factors that were examined included biochemical parameters, such as: calcium levels, parathyroid hormone (PTH) levels, 25-hydroxy-vitamin D, clinical and surgical parameters, such as: type of surgery, identification of less than two parathyroid glands, reoperation, size of thyroid gland and patient-related factors, such as: gender and age. Conclusion : Measurements of perioperative PTH levels, postoperative calcium levels and vitamin D levels are important predictive factors of postoperative hypocalcaemia. Other factors such as female gender, older age and identification of less than two parathyroid glands during surgery are related to the development of hypocalcaemia as well, but need to be further investigated.
Higher Chern classes in Iwasawa theory
Creators: name: Bleher, F. M.
name: Chinburg, T.
name: Greenberg, R.
name: Kakde, M.
name: Pappas, G.
name: Sharifi, R.
name: Taylor, M. J.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 11R23, 11R34, 18F25

description: We begin a study of m-th Chern classes and m-th characteristic symbols for Iwasawa modules which are supported in codimension at least m. This extends the classical theory of characteristic ideals and their generators for Iwasawa modules which are torsion, i.e., supported in codimension at least 1. We apply this to an Iwasawa module constructed from an inverse limit of p-parts of ideal class groups of abelian extensions of an imaginary quadratic field. When this module is pseudo-null, which is conjecturally always the case, we determine its second Chern class and show that it has a characteristic symbol given by the Steinberg symbol of two Katz p-adic L-functions.
description: 50 pages
The impact of disclosure on health outcomes in HIV-infected Nigerian children
Creators: name: Odiachi, Angela
Publisher: name: University of North Carolina at Chapel Hill Graduate School
Year: 2015
Subjects: Public health
Macroecology

description: AIM: The study aimed to determine the prevalence, age and main agent of disclosure among Nigerian children on antiretroviral treatment. The study also sought to elicit barriers to, and facilitators of disclosure, and the context and process of disclosure. METHODS: In this cross-sectional, facility-based study, a semi-structured questionnaire was administered to 110 parents/caregivers of children ≥ 6 years, to determine child’s disclosure status. This was followed by a more detailed interview with 15 parent/caregivers of disclosed children. CD4, viral load, opportunistic infections and adherence information were also extracted from medical records for all 110 children. RESULTS: The mean age (SD) of the children in the study was 10.15 (2.97) years, with a median (range) of 9.50 (6 – 18) years. According to parents/caregivers’ accounts 34 (30.9%) children knew they were living with HIV, while 74 (67.3%) did not know. Mean age (SD) at disclosure was 10.47 (2.62) years, with a median (range) of 10.00 (6 - 17) years. Most of the children (79.4%) were disclosed at home by their parent(s)/caregiver. The rest were disclosed at the hospital: five were disclosed by a health care provider, while two were accidental disclosure. The most common reasons for disclosure were related to adherence issues – either to help prepare the children to take their medicines or that the child had refused to take his/her medicines (39.4%). This was followed by the child asking a lot of questions related to his/her health, frequent visits to the hospital, or why s/he was taking a lot of medicines even though s/he did not feel ill (27.3%). Most parents/ caregivers did not disclose because the child was considered too young (84.0%) or will not be able to keep their HIV status a secret (10.7%). Disclosure was mostly unplanned and a one-off event. Children’s reaction to disclosure ranged from no reaction to shock and crying. Multivariate logistic regression showed that only child’s age was a statistically significant predictor of status disclosure (OR 1.69, p=0.002; 95% CI 1.21 – 2.34). The study did not show any association between disclosure and other child and parent/caregiver characteristics. There was no association between disclosure and self-reported adherence (p=0.615).
A Wilsonian Energy-Momentum Tensor
Creators: name: Rosten, Oliver J.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: For local conformal field theories, it is shown how to construct an expression for the energy-momentum tensor in terms of a Wilsonian effective Lagrangian. Tracelessness implies a single, unintegrated equation which enforces both the Exact Renormalization Group equation and its partner encoding invariance under special conformal transformations.
description: v3: Published version - 36 pages, various clarifications
Hemogenic Endothelium within the Zebrafish Caudal Hematopoietic Tissue illustrates the Common Ties of the Vascular and Hematopoietic Systems
Creators: name: Woolls, Melissa Jo
Publisher: name: University of North Carolina at Chapel Hill
Year: 2013

description: Hemogenic endothelium involves the specification of a hematopoietic stem cell (HSC) from an existing endothelial cell. It, along with common developmental origins, co-regulation, and shared niches are examples of the close ties the hematopoietic and endothelial lineages share in development. As a significant portion of total HSCs are generated via a hemogenic endothelium intermediate, modulation of this pathway is expected to impact both hematopoietic and endothelial development. Currently, our understanding of how endothelial cells transition to the HSC lineage is still limited. We found that non-aortic endothelial cells, specifically venous endothelial cells, are capable of undergoing the transition to an HSC lineage, suggesting that the hemogenic capacity is a more general characteristic of endothelial cells then previously appreciated. When we analyzed these cells further, we found that they were positive for venous specific markers and well as hematopoietic transcription factors. Further, we identified a potential homolog of Platelet Endothelial Cell Adhesion Molecule 1 (PECAM1) in zebrafish and characterized its expression during development. We found that this molecule is expressed in a manner consistent with PECAM1 and is involved in flow-dependent process. Finally, we find that loss of this PECAM1-like molecule is capable of modulating hematopoiesis, suggesting that the vascular and hematopoietic share common machinery responsible for the observed response to blood flow.
Quasi-periodicity and multi-scale resonators for the reduction of seismic vibrations in fluid-solid systems
Creators: name: Carta, Giorgio
name: Movchan, Alexander B.
name: Argani, Luca P.
name: Bursi, Oreste S.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences
subject: 74F10

description: This paper presents a mathematical model for an industry-inspired problem of vibration isolation applied to elastic fluid-filled containers. A fundamental problem of suppression of vibrations within a finite-width frequency interval for a multi-scale fluid-solid system has been solved. We have developed a systematic approach employing full fluid-solid interaction and dispersion analysis, which can be applied to finite and periodic multi-scale systems. The analytical findings are accompanied by numerical simulations, including frequency response analyses and transient regime computations.
description: 33 pages, 20 figures
From John Polidori to Anne Rice: The Nomadic Nature of the Vampire and the Impact of Geography on the Vampiric Idiosyncrasy
Creators: name: Σδρόλια, Μαγδαληνή Αποστόλου
Publisher: name: Aristotle University of Thessaloniki
Year: 2023
Subjects: Βρικόλακες
Γεωγραφία
Νομαδικότητα
Vampires
Geography
Nomadism

description: This thesis will examine the figure of the vampire as a nomadic creature and its constant transformation based on the behavioral and psychological impact of place and the role of the temporal context. More specifically, I will attempt to pinpoint the divergent depictions of the vampires featured in literary novels, building my study on the vampire’s ambivalent identity, as it is depicted both as a folkloric “product”, born by a cluster of specific values and morals, seemingly “tied” to a specific motherland but also – given their nomadic tendencies– as a creature which is forced to adapt to the personal and national disposition of each “topos” they choose to inhabit. For this purpose, I will be using popular gothic novels, featuring vampires, in order to investigate multiple approaches, regarding different types of vampiric nomadism, the growing power of the motherland over the creature, and, finally, the impact of time and space on its portrayal.
description: Αυτή η διατριβή θα εξετάσει τη φιγούρα του βαμπίρ ως νομαδικού πλάσματος και τη συνεχή μεταμόρφωσή του με βάση τη συμπεριφορική και ψυχολογική επίδραση του τόπου, όπως και τον ρόλο του χρονικού πλαισίου. Πιο συγκεκριμένα, θα επιχειρήσω να εντοπίσω τις διάφορες απεικονίσεις των βρικολάκων που εμφανίζονται στα λογοτεχνικά μυθιστορήματα, χτίζοντας τη μελέτη μου στην αμφίθυμη ταυτότητα του βρικόλακα, καθώς απεικονίζεται και ως λαογραφικό ‘προϊόν’, που γεννιέται από ένα σύμπλεγμα συγκεκριμένων αξιών και ηθών, φαινομενικά ‘εξαρτώμενο’ από μια συγκεκριμένη πατρίδα αλλά και – δεδομένων των νομαδικών του τάσεων – ως πλάσμα που αναγκάζεται να προσαρμοστεί στον πολιτισμικό χαρακτήρα κάθε τόπου που επιλέγει, προσωρινά, να κατοικήσει. Για το σκοπό αυτό, θα χρησιμοποιήσω δημοφιλή γοτθικά μυθιστορήματα, προκειμένου να διερευνήσω πολλαπλές προσεγγίσεις, σχετικά με διαφορετικούς τύπους βαμπιρικής νομαδικότητας, την αυξανόμενη δύναμη της πατρίδας πάνω στο πλάσμα και, τέλος, την επίδραση του χρόνου και του χώρου στην απεικόνισή του.
Predicting the past, current, and future climate niche distribution of Tetragonula iridipennis Smith 1854 (Apidae: Meliponini) across the Indomalayan realm: insights into the impact of climate change
Creators: name: Ghassemi-Khademi, Taghi
name: Khosravi, Rasoul
name: Silva, Daniel Paiva
name: Kandemir, Irfan
name: Krutmuang, Patcharin
name: Sadeghi, Saber
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology
subject: 69999 Biological Sciences not elsewhere classified
subject: Plant Biology

description: The distribution range of many bee species in Asia has been affected by changing climates. Ecological niche models (ENMs) have many applications for predicting the effects of such changes in climate conditions on the future species range. Tetragonula iridipennis Smith, 1854 (Apidae: Meliponini) is a tropical stingless bee distributed in some parts of the Indomalayan realm. This species is one of the most critical keystone bee pollinators across its range. We predicted its paleodistribution, current, and future ranges across the Indomalayan realm. We used the maximum entropy method to build our models in seven periods, from the last interglacial until 2070. The isothermality was the most determinant climate factor affecting the climate niche of the species. Our predictions showed that in the last glacial maximum and previous interglacial periods the extent of the climatically suitable habitats of the species was probably broader than in the current scenario. The climatic suitability of the existing range will be expanded geographically in some parts of southeast Asia and northern India by 2070 under climate scenarios. The lack of significant climate niche divergence among the populations studied, except for Indonesia-Sri Lanka, results in uniformity of the climate conditions across the species’ range and recent range expansion. With the projected spatial patterns of the climate niche of the species, future management efforts for the effective conservation of the species will be facilitated by identifying potentially suitable habitats and areas where it is more likely to survive.
Boundedness and decay of scalar waves at the Cauchy horizon of the Kerr spacetime
Creators: name: Hintz, Peter
Publisher: name: arXiv
Year: 2015
Subjects: subject: Analysis of PDEs (math.AP)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: Primary 58J47, Secondary 35L05, 35P25, 83C57

description: Adapting and extending the techniques developed in recent work with Vasy for the study of the Cauchy horizon of cosmological spacetimes, we obtain boundedness, regularity and decay of linear scalar waves on subextremal Reissner-Nordström and (slowly rotating) Kerr spacetimes, without any symmetry assumptions; in particular, we provide simple microlocal and scattering theoretic proofs of analogous results by Franzen. We show polynomial decay of linear waves relative to a Sobolev space of order slightly above $1/2$. This complements the generic $H^1_{\mathrm{loc}}$ blow-up result of Luk and Oh.
description: 31 pages, 9 figures. v2 is the published version, with minor improvements
Acute Effects of Posture Shirt Use on Scapular Kinematics and Rounded Shoulder Posture in College Students
Creators: name: Manor, John Peter
Publisher: name: University of North Carolina at Chapel Hill
Year: 2013

description: Context: Rounded shoulder posture and altered scapular kinematics can contribute to shoulder pain. Corrective techniques such as manual therapy and exercise are shown to correct poor biomechanics and rounded shoulder posture, but there is little evidence to suggest corrective garments such as posture shirts effectively treat rounded shoulder posture or poor scapular kinematics. Objectives: To determine the acute effects of posture shirt use on scapular kinematics and rounded shoulder posture in college students. Design: Repeated measures intervention study with counterbalanced conditions. Setting: Sports Medicine Research Laboratory. Participants: Twenty-one members of the general student body of a university, between 18 and 25 years old, with a forward shoulder angle (FSA) greater than 52°, no history of upper extremity surgery, scoliosis, active shoulder pain, or shoulder pain in the last three months that restricted participation for greater than three consecutive days. Interventions: Photographic posture assessment and biomechanical analysis of elevation tasks first under a control condition, second by either a sham condition or treatment condition; third, under another control condition and finally, the last condition (treatment or sham), counterbalanced to the first. Main Outcome Measures: Forward shoulder angle (FSA), calculated from lateral photograph, and scapular position and orientation collected through electromagnetic motion analysis during an elevation task. Results: Forward shoulder angle was decreased relative to the control condition while wearing the sham shirt (p=0.007) but not the posture shirt. There was a significant increase in scapular protraction at 90° (Conclusions: Application of posture shirts does not acutely alter forward shoulder angle or scapular kinematics, while application of a sham shirt may decrease forward shoulder angle at rest and increase scapular protraction at increased angles of humeral elevation.
title: Введение в инноватику
title: Учебное пособие
titleType: Subtitle
Creators: name: Асаул А.Н.
name:  Асаул В.В.
name:  Асаул Н.А.
name:  Фалтинский Р.А.
Publisher: name: Институт проблем экономического возрождения
Year: 2010

description: Дается системное представление об основах организации инновационной деятельности. Последовательно рассматриваются содержание профессиональной подготовки бакалавра по направлению «Инноватика» и система непрерывной подготовки кадров, способных коммерциализировать технологии (инноваторов). Излагаются сущность инноватики и процессов инновационной деятельности; вопросы коммерциализации нововведений, управления интеллектуальной собственностью, трансфера технологий. Приводятся тесты позволяющие выявить уровень знаний; задания и контрольные вопросы; предлагаются темы рефератов. В конце каждой главы дается список литературы. Предназначена для студентов, аспирантов и преподавателей, может быть полезным предпринимателям, интересующимся инновационной деятельностью.
description: Given the system representation about bases of organization of innovative activities. Consistently analyzes the content of professional training of bachelors in the direction "innovation" and the system of continuous training, able to commercialize the technology (the innovators). Presents the essence of innovation and process of innovation; commercialization of innovation, intellectual property management, technology transfer. Are tests allowing to identify the level of knowledge; assignments and quizzes; themes of the essays. At the end of each Chapter list of references. Designed for students and teachers, can be useful to entrepreneurs interested in innovation.
Pollination efficiency and foraging behaviour of honey bees and flies to onion Allium cepa L.
Creators: name: Divija, S. D.
name: Jayanthi, P. D. Kamala
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Neuroscience
subject: Biotechnology
subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: Ecology
subject: Sociology
subject: FOS: Sociology
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: 60506 Virology

description: Bees and flies are the most common visitors to onion flowers in Karnataka, but evidence for their pollination efficiency is lacking. Hence, experiments on pollination efficiency and behavioral observations were recorded using four bees (Apidae: Hymenoptera) and two flies (Syrphidae: Diptera) species visiting onion flowers (Allium cepa L.) at the experimental fields of ICAR-Indian Institute of Horticultural Research, Bengaluru, Karnataka, India (13.13°N; 77.49°E) during 2020-2021. Pollinator effectiveness (PE) is measured as pollen deposition on stigmas per visit. Honey bees and flies mainly collect nectar and stingless bees mainly pollen (81.90%), bringing the latter into intimate contact with the stigma more frequently. Stingless bees, honey bees and flies were often seen foraging together on the same umbel, and no antagonistic interactions were observed. The rock bee (Apis dorsata) deposited a maximum number (34.60) of pollen on stigma per visit followed by the stingless bee (24.45). The flowers pollinated by bees had a higher seed set percentage; the weight of 1000 seeds and the average number of seeds/umbels were higher compared to flowers deprived of pollinators. The results allowed us to conclude that bees are the effective pollinators of onions. Further work is needed to determine the optimum bee population required for maximizing the seed yield in onion.
Cucurbit crops in temperate Australia are visited more by native solitary bees than by stingless bees
Creators: name: Nacko, Scott
name: Hall, Mark
name: Spooner-Hart, Robert
name: Cook, James
name: Bernauer, Olivia
name: Riegler, Markus
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Cell Biology
subject: Biotechnology
subject: Ecology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: Plant Biology

description: The propagation and management of stingless bees for pollination services is a growing industry in Australia, but we need to better understand in which crops and environments these pollinators are most useful. We investigated the potential of two Australian stingless bee species, Tetragonula carbonaria and Tetragonula hockingsi, to pollinate cucumber and watermelon crops in both field and protected cropping (greenhouse or polytunnel) environments. We recorded floral visitation rates and fruit yield in cucumber and watermelon and characterized the assemblage of wild pollinators visiting both field-grown crops. Of 229 surveys of cucumber flowers and 144 surveys of watermelon flowers in field experiments where T. carbonaria colonies were deployed, no stingless bees were recorded visiting cucumber flowers, and only one was recorded visiting watermelon flowers. Visitor assemblages in both crops were dominated by the introduced Apis mellifera, with a high number of native solitary halictid bees also visiting watermelon flowers. In a no-choice experiment, stingless bee (T. carbonaria and T. hockingsi) visits to watermelon flowers in a polytunnel occurred after four days but were low in number at first, compared to a greenhouse experiment where visits to cucumber flowers occurred only after 22 days and resulted in poor fruit set. In fact, T. hockingsi more readily collected fungal spores than pollen from cucumbers. Our results indicate that T. carbonaria and T. hockingsi do not make major contributions to the pollination of cucumber and watermelon, but other native flower visitors, including halictid bees, may be important pollinators of these crops.
Correlated expression of phenotypic and extended phenotypic traits across stingless bee species: worker eye morphology, foraging behaviour, and nest entrance architecture
Creators: name: Segers, Francisca H. I. D.
name: Grüter, Christoph
name: Menezes, Cristiano
name: Mateus, Sidnei
name: Ratnieks, Francis L. W.
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology
subject: 69999 Biological Sciences not elsewhere classified

description: Stingless bees are the most species-rich group of eusocial bees and show great diversity in behaviour, ecology, nest architecture, colony size, and worker morphology. How this variation relates to varying selection pressures and constraints is not well understood. Variation can be caused by selection acting on behavioural or morphological traits, both alone and in correlation across traits. Here we tested whether behavioural and morphological traits important for foraging and defence are linked to nest-entrance architecture, an extended phenotype relevant to both foraging and nest defence. Using 23 species we investigated whether eye size, nest entrance size, landing behaviour and foraging method show cross-species correlations. A phylogenetically-controlled comparative analysis revealed that species with relatively smaller eyes build relatively larger entrances, which in turn are associated with faster landing approaches and fewer landing errors by foragers, both of which could reduce predation risk. Concerning foraging, mass-recruiting species have c. 10-times larger entrance holes than species with a solitary foraging strategy. Larger entrances could help species with mass recruitment to rapidly increase forager traffic or mount a strong defensive response when under attack. Our results show that studying correlations among different traits helps understand phenotypic diversity in species rich groups.
Morphometric and genetic analyses show differentiation of the widely distributed stingless bee Nannotrigona perilampoides (Hymenoptera: Meliponini) across geographic regions in Mexico
Creators: name: Urueña, Álvaro
name: Martínez-López, Vicente
name: de Jesús May-Itzá, William
name: Quezada-Euán, José Javier Guadalupe
name: De la Rúa, Pilar
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Evolutionary Biology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology

description: Stingless bees are a diverse group of insects that contribute a wealth of fauna to Central America, as well as being important pollinators. Colonies of these stingless bees are managed and transported unregulated across geographic regions on the basis that they are native species. Populations of Nannotrigona perilampoides, one of the most common stingless bee species in Mexico and Central America, are separated by several geographical barriers that may act as obstacles to gene flow. In addition, their biological and reproductive characteristics make them susceptible to variation among their populations. In this work, we combined morphometric and molecular analyses (through cox1, 16S, ITS1 and ITS2 sequencing) to test whether there is a differentiation between distant populations of N. perilampoides separated by the Sierra Madre Mountain complex. Analyses of wing geometric morphometrics and sequence variation of a fragment of the 16S gene revealed significant differences between populations. These differences show a pattern of isolation by distance, and the possible effect of the Sierra Madre as a biogeographical barrier. The results suggest that N. perilampoides may be composed of distinct evolutionary units and that colony exchange among regions should be restricted to preserve the diversity of this species.
Raiding the Toolbox - Techniques for Assessing Historical, High-Resolution Records of Coastal and Estuarine Sediment Erosion, Transport and Sedimentation
Creators: name: Elliott, Emily
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2017

description: Estuaries act as a buffers to material transport from terrestrial to oceanic environments. Characterizing mechanisms of erosion, transport and deposition within estuaries is crucial for understanding material flux to the marine environment and compositional transformations. However, obtaining multi-decadal high-resolution records of sediment flux, source, and composition within estuaries is a major challenge in coastal research due to dynamic processes that actively erode, resuspend and/or rework the sedimentary record. For this reason, estuarine sedimentology has dominantly focused on either long-term (decadal to millennial) records that show constant sedimentation rates often matching the rate of sea-level rise, or short-term (multi-year to decadal) studies that show variable sedimentation rates associated with events. This dissertation presents a monthly record of estuarine sedimentation that spans ~40 years within a highly accreting mini-basin, Cape Lookout Bight (CLB), NC, utilizing existing and newly-developed methods. This long-term high-resolution record is used to identify the dominant physical drivers of sediment flux within the estuary. Chapter 1 of this dissertation uses the lithologic and the long-term geochronology of this basin to determine its formation and sediment sources through time. Chapter 2 presents and tests the efficacy of a modified uni-directional time-integrated mass suspended-sediment sampler for use within the bi-directional flow of a tidal (estuarine) environment. Modified collectors are then used to verify the dominant estuarine sediment source to the CLB basin. Chapter 3 applies and tests different geochronological models for excess Pb-210 within the estuarine system, showing the strengths and weaknesses of each model application within our system, and presents a method for applying tempestite horizons for increased resolution and accuracy of estuarine geochronologies. Finally, Chapter 4 uses this established high-resolution multi-decadal geochronology, along with historical physical data obtained for the system, to identify sediment source and drivers of sediment transport within the estuary to the coastal ocean through time. This study identifies multiple sedimentation events that are triggered by conditions that have a recurrence interval of ~1 year (+/- 0.5) and advances our understanding of how storms, and therefore climate change may impact sediment erosion, transport and deposition within the coastal zone.
Spin-resolved spectroscopy of helical Andreev bound states
Creators: name: Calzona, Alessio
name: Trauzettel, Björn
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We propose a versatile setup that allows performing spin-resolved spectroscopy of helical Andreev bound states, proving their existence and therefore the topological nature of the Josephson junction that hosts them. The latter is realized on the helical edge of a 2D topological insulator, proximitized with two superconducting electrodes. The spectroscopic analysis is enabled by a quantum point contact, which couples the junction with another helical edge acting as a spin-sensitive prove. By means of straightforward transport measurements, it is possible to detect the particular spin structure of the helical Andreev bound state and to shine light on the mechanism responsible for their existence, i.e. the presence of protected Andreev reflection within the Josephson junction. We discuss the robustness of this helical Andreev spectrometer with respect to processes that weaken spin to charge conversion.
description: 6 pages, 3 figures + SM (10 pages, 3 figures)