cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Ρήξη του πρόσθιου χιαστού συνδέσμου στον αναπτυσσόμενο σκελετό: θεραπευτικές επιλογές και χειρουργικές τεχνικές. Συστηματική ανασκόπηση
Creators: name: Νικολαΐδου, Αναστασία Κωνσταντίνου
Publisher: name: Aristotle University of Thessaloniki
Year: 2023
Subjects: ΠΧΣ
Πρόσθιος χιαστός σύνδεσμος
Παιδιά
Έφηβος
Ανώριμος
Θεραπεία
Χειρουργική
Μη Χειρουργική
Μη-Χειρουργική
ACL
Anterior cruciate ligament
Children
Adolescent
Premature
Treatment
Surgical
Nonsurgical
Non-surgical

description: Σε αντίθεση με την αντιμετώπιση των κακώσεων του ΠΧΣ στους ενήλικες, υπάρχει διαφωνία σχετικά με τη θεραπεία μιας ρήξης ΠΧΣ σε έναν σκελετικά ανώριμο ασθενή. Υπάρχουν μελέτες που δείχνουν ότι η συντηρητική αντιμετώπιση οδηγεί σε σημαντική αστάθεια της άρθρωσης, με συνοδές κακώσεις σε μηνίσκους και χόνδρους. Η χειρουργική αποκατάσταση μιας ρήξης ενέχει τον κίνδυνο τρώσης των συζευκτικών χόνδρων, με συνέπεια τη δημιουργία ανομοιομορφίας μήκους κάτω άκρων. Σκοπός αυτής της εργασίας είναι να παρουσιάσει όλες τις θεραπευτικές επιλογές που περιγράφονται στη διεθνή βιβλιογραφία σχετικά με την αποκατάσταση των ρήξεων του ΠΧΣ στους ανήλικους ασθενείς. Εξετάσαμε τις ενδείξεις τόσο της συντηρητικής όσο και της χειρουργικής αποκατάστασης. Στη συνέχεια παραθέσαμε αναλυτικά όλες τις χειρουργικές τεχνικές που έχουν περιγραφεί για την αποκατάσταση μιας ρήξης ΠΧΣ σε παιδιά. Τέλος, προτείναμε έναν θεραπευτικό αλγόριθμο, βάσει των χαρακτηριστικών της ρήξης, της σκελετικής ηλικίας του ασθενούς και το υπολειπόμενο της ανάπτυξης.
description: In contrast to the treatment of ACL injuries in adults, the management of ACL tears in the skeletally immature patient remains controversial. Several studies show that conservative treatment could result in severe instability, as well as concomitant meniscal and chondral injuries. Reconstruction of a torn ACL carries the risk of damaging the open growth plates and consequently creating lower limb length discrepancies. The aim of the present thesis is to review the recent literature and present all the treatment options available for ACL ruptures in skeletally immature patients. We investigated the indications for conservative and for surgical treatment. Furthermore, we analysed all the surgical techniques available for the reconstruction of a torn ACL in children. Finally, we suggested a treatment algorithm based on the characteristics of the rupture, the patient's skeletal age and the remaining skeletal growth.
Βιβλιογραφική ανασκόπηση των συστημάτων προεγχειρητικής αξιολόγησης των παραγόντων κινδύνου για την φακοθρυψία
Creators: name: Νικολάου, Παρασκευάς Νίκου
Publisher: name: Aristotle University of Thessaloniki
Year: 2023
Subjects: Φακοθρυψία
Συστήματα προεγχειρητικής αξιολόγησης
Παράγοντες κινδύνου
Phacoemulsification
Preoperative evaluation systems
Risk factors

description: Ο στόχος αυτής της εργασίας είναι να γίνει μια βιβλιογραφική ανασκόπηση των συστημάτων προεγχειρητικής αξιολόγησης των κινδύνων για τη φακοθρυψία. Μετά από αναζήτηση μέσω διαδικτύου σε Google Scholar και PubMed συγκεντρώθηκε βιβλιογραφία για μελέτη και επεξεργασία. Στην εργασία συμπεριλήφθηκαν βιβλιογραφικές πηγές δημοσιευμένες από το 2003 έως και σήμερα (2023). Μερικές από αυτές είναι πηγές που αναφέρονται σε δημιουργία και εφαρμογή συστημάτων αξιολόγησης και βαθμονόμησης των προεγχειρητικών παραγόντων κινδύνου σε κλινικές μελέτες. Οι υπόλοιπες είναι δημοσιεύσεις μελετών που αξιολογούν και συγκρίνουν αυτά τα υφιστάμενα συστήματα. Στην συντριπτική πλειοψηφία των βιβλιογραφικών αναφορών επιβεβαιώνεται η πεποίθηση πως η χρήση συστημάτων αξιολόγησης μειώνει τις διεγχειρητικές και μετεγχειρητικές επιπλοκές ενώ τα υψηλά σκορ ρίσκου συσχετίστηκαν με υψηλότερη συχνότητα επιπλοκών, μεγαλύτερο χειρουργικό χρόνο, περισσότερες επιπρόσθετες επεμβάσεις και μείωση της τελικής οπτικής οξύτητας. Σε αρκετές αναφέρεται ο σημαντικός τους ρόλος στην εκπαίδευση των ειδικευομένων και στη σωστή κατανομή των περιστατικών στους χειρουργούς. Τα συστήματα προεγχειρητικής αξιολόγησης των κινδύνων στη φακοθρυψία είναι πολύ σημαντικά και καλό θα ήταν να εφαρμόζονται στην καθημερινή κλινική πράξη αφού φαίνεται να ωφελούν τόσο τους χειρουργούς αλλά πρωτίστως τους ασθενείς.
description: The aim of this paper is to perform a literature review of preoperative risk assessment systems for phacoemulsification. After an internet search in Google Scholar and PubMed literature was collected for study and editing. Bibliographic sources published from 2003 to the present (2023) were included in the work. Some of these are sources that refer to the creation and implementation of systems for evaluating and calibrating preoperative risk factors in clinical studies. The rest are published studies that evaluate and compare these existing systems. Many of literature reports, the belief is confirmed that the use of assessment systems reduces intraoperative and postoperative complications, while high risk scores were associated with a higher frequency of complications, longer surgical time, more additional operations, and a decrease in final visual acuity. Several mention their important role in the training of specialists and in the correct distribution of cases to surgeons. Preoperative risk assessment systems in phacoemulsification are very important and should be implemented in daily clinical practice since they seem to benefit both surgeons and primarily patients.
Searching for outliers in the Chandra Source Catalog
Creators: name: Swarm, Dustin K.
name: DeRoo, Casey T.
name: Liu, Yanan
name: Watkins, Samantha
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Astronomers are increasingly faced with a deluge of information, and finding worthwhile targets of study in the sea of data can be difficult. Outlier identification studies are a method that can be used to focus investigations by presenting a smaller set of sources that could prove interesting because they do not follow the trends of the underlying population. We apply a principal component analysis (PCA) and an unsupervised random forest algorithm (uRF) to sources from the Chandra Source Catalog v.2 (CSC2). We present 119 high-significance sources that appear in all repeated applications of our outlier identification algorithm (OIA). We analyse the characteristics of our outlier sources and cross-match them with the SIMBAD data base. Our outliers contain several sources that were previously identified as having unusual or interesting features by studies. This OIA leads to the identification of interesting targets that could motivate more detailed study.
MYC.A.M. (My Customizable and Accesible Museum). Personalizzazione e accessibilità dei beni culturali grazie alla realtà aumentata
Creators: name: Gargano, Alessandra
Publisher: name: Universita degli studi di Salerno
Year: 2021
Subjects: subject: M-PED/03 DIDATTICA E PEDAGOGIA SPECIALE
subject: Realtà aumentata
subject: Personalizzazione
subject: Beni culturali

description: 2018 - 2019
description: In the last few years, the theme of accessibility has been the driving force of profound changes, which have revolutionized society and culture represents one of the crucial areas both for the central role it plays in the growth of the individual and society, and for the advanced state of development that accessibility has reached in the cultural sphere. Starting from the consideration that each individual is characterized by multiple facets, in order to create a combination of accessibility and culture, it is not necessary to create unique solutions for everyone, but to think of them on the basis of the characteristics specific to each type of user, in order to satisfy even the less obvious needs, aware of the fact that it is necessary to intervene for the maximum autonomy of the individuals, who show different needs based on their evolutionary condition, age, physical, sensorial and cognitive abilities, training, culture and experience. Therefore, the idea is to develop an augmented reality APP with accessibility and customization features and therefore can be adapted to the needs of each individual user. Once he has framed a reference work with his mobile device, he will be able to access accessible and connected knowledge bases contained in the semantic web. The target is to demonstrate that the knowledge bases currently available can be used to create differentiated paths adapted to the needs of individual users. [edited by Author]
Non-Hodgkin lymphoma (NHL) subtypes defined by common translocations: Utility of fluorescence in situ hybridization (FISH) in a case–control study
Creators: name: Cerhan, James R.
name: Dunphy, Cherie H.
name: Dorsey, Kathleen C.
name: Schroeder, Jane C.
name: Baric, Ralph S.
name: Rothman, Nathaniel
name: Olshan, Andrew F.
name: Huang, Wen-Yi
name: Blair, Aaron
name: Chang, Cindy M.
name: Cantor, Kenneth P.
name: Dent, Georgette A.
name: Lynch, Charles F.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2010

description: We used fluorescence in situ hybridization (FISH) assays to identify t(14;18) translocations in archival paraffin-embedded tumor sections from non-Hodgkin lymphoma (NHL) cases enrolled in a population-based study. t(14;18) was identified in 54% of 152 cases, including 39% of diffuse large cell lymphomas (26 of 66 cases) and 84% of follicular lymphomas (36 of 43 cases). Eighty-seven percent of t(14;18)-positive cases and 57% of t(14;18)-negative cases expressed bcl-2. FISH assays detected twice as many t(14;18)-positive follicular lymphomas as PCR assays. Overall, study findings support the use of FISH assays to detect t(14;18) in archival tumor samples for epidemiologic studies of NHL subtypes.
A K-band spectral mini-survey of Galactic B[e] stars
Creators: name: Liermann, A.
name: Schnurr, O.
name: Kraus, M.
name: Kreplin, A.
name: Arias, M. L.
name: Cidale, L. S.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present a mini-survey of Galactic B[e] stars mainly undertaken with the Large Binocular Telescope (LBT). B[e] stars show morphological features with hydrogen emission lines and an infrared excess, attributed to warm circumstellar dust. In general, these features are assumed to arise from dense, non-spherical, disk-forming circumstellar material in which molecules and dust can condensate. Due to the lack of reliable luminosities, the class of Galactic B[e] stars contains stars at very different stellar evolutionary phases like Herbig AeBe, supergiants or planetary nebulae. We took near-infrared long-slit K-band spectra for a sample of Galactic B[e] stars with the LBT-Luci I. Prominent spectral features, such as the Brackett gamma line and CO band heads are identified in the spectra. The analysis shows that the stars can be characterized as evolved objects. Among others we find one LBV candidate (MWC314), one supergiant B[e] candidate with 13CO (MWC137) and in two cases (MWC623 and AS 381) indications for the existence of a late-type binary companion, complementary to previous studies. For MWC84, IR spectra were taken at different epochs with LBT-Luci I and the GNIRS spectrograph at the Gemini North telescope. The new data show the disappearance of the circumstellar CO emission around this star, previously detectable over decades. Also no signs of a recent prominent eruption leading to the formation of new CO disk emission are found during 2010 and 2013.
description: 10 pages, 7 figures, 4 tables, accepted for publication in MNRAS (in press)
Operational Definitions of Sexual Orientation and Estimates of Adolescent Health Risk Behaviors
Creators: name: Matthews, Derrick D.
name: Blosnich, John R.
name: Farmer, Grant W.
name: Adams, Brian J.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2014

description: Increasing attention to the health of lesbian, gay, and bisexual (LGB) populations comes with requisite circumspection about measuring sexual orientation in surveys. However, operationalizing these variables also requires considerable thought. This research sought to document the consequences of different operational definitions of sexual orientation by examining variation in health risk behaviors.
Electrostatic correlation induced ion condensation and charge inversion in multivalent electrolytes
Creators: name: Agrawal, Nikhil R.
name: Wang, Rui
Publisher: name: arXiv
Year: 2022
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The study of the electrical double layer lies at the heart of colloidal and interfacial science. The standard mean-field Poisson-Boltzmann (PB) theory is incapable of modeling many phenomena originated from ion correlation. An important example is charge inversion or overcharging of electrical double layers in multivalent electrolyte solutions. Existing theories aiming to include correlations cannot capture the nonmonotonic dependence of charge inversion on salt concentration because they have not systematically accounted for the inhomogeneous nature of correlations from surface to the bulk and the excluded volume effect of ions and solvent molecules. In this work, we modify the Gaussian renormalized fluctuation theory by including the excluded volume effect to study ion condensation and charge inversion. A boundary layer approach is developed to accurately model the giant difference in ion correlations between the condensed layer near the surface and the diffuse layer outside. The theory is used to study charge inversion in multivalent electrolytes and their mixtures. We predict a surface charge induced formation of a three-dimensional condensed layer, which is necessary but not sufficient for charge inversion. The value of the effective surface potential is found to depend non-monotonically on the bulk salt concentration. Our results also show a non-monotonic reduction in charge inversion in monovalent and multivalent electrolyte mixtures. Our work is the first to qualitatively reproduce experimental and simulation observations and explains the underlying physics.
Θυροειδής Αδένας και Περιβάλλον
Creators: name: Ουζουνίδου, Αναστασία Λεωνίδα
Publisher: name: Aristotle University of Thessaloniki
Year: 2023
Subjects: Θυροειδής Αδένας
Τοξικοί Περιβαλλοντικοί Παραγόντες
Thyroid Gland
Enviromental Toxical Factors

description: Από παλιά έχει γίνει γνωστό ότι η μόλυνση του περιβάλλοντος (αέρας, νερά, έδαφος) έχει βλαπτική επίδραση στην ανθρώπινη υγεία. Μεταξύ των τοξικών επιδράσεων αναφέρεται η διαταραχή της ανδρικής και της γυναικείας γονιμότητας, η αλλεργία, η διαταραχή της θυρεοειδικής λειτουργίας και η αύξηση των κακοήθων νεοπλασιών. Οι διάφορες μελέτες που έχουν πραγματοποιηθεί έχουν αποκαλύψει ένα ευρύ φάσμα τοξικών ουσιών του περιβάλλοντος που επηρεάζουν την παραγωγή, το μεταβολισμό και τη δράση των θυρεοειδικών ορμονών. Οι περισσότεροι από αυτούς τους παράγοντες, σε επαρκείς δόσεις, παρεμβαίνουν στη λειτουργία του θυρεοειδούς και η επίδρασή τους μπορεί να ανιχνευθεί από αύξηση της TSH στον ορό ή μείωση της θυροξίνης (Τ4) ή από την Τ3. Τώρα αναγνωρίζεται, πως ορισμένοι από αυτούς τους παράγοντες μπορεί επίσης να επηρεάσουν τον ρυθμιστικό άξονα υποθαλάμου-υπόφυσης-θυρεοειδούς και να συσχετιστούν με μειωμένη συγκέντρωση Τ4 ή Τ3 στον ορό, αλλά με φυσιολογικό εύρος TSH. Μελέτες που έχουν γίνει σε ζώα και σε ανθρώπους, ειδικά εκείνες που εξετάζουν την ανάπτυξη του εγκεφάλου, δείχνουν πως υπάρχει πιθανότητα διακοπής της τοπικής παραγωγής θυρεοειδικής ορμόνης ή της δράσης της, αυτό ωστόσο είναι δύσκολο να ανιχνευθεί από τα επίπεδα των κυκλοφορούντων θυρεοειδικών ορμονών. Υπάρχουν επίσης ορισμένοι παράγοντες, όπως τα πολυχλωριωμένα διφαινύλια (PCBs), που μπορεί να δρα ενδογενώς ως αγωνιστής της θυρεοειδικής ορμόνης. Η πρόκληση είναι να προσδιοριστεί το αντίκτυπο που θα υπάρξει σε συγκεκριμένες λειτουργίες του θυρεοειδή λόγω της έκθεσης ενός ατόμου σε οποιοδήποτε περιβαλλοντικό τοξικό παράγοντα.
description: It has long been known that the pollution of the environment (air, water, soil) has harmful effects on human health. Toxic effects include male and female fertility disorders, allergies, thyroid dysfunction, and increase the reveal of malignant neoplasms. Various studies have revealed a wide range of environmental toxins that affect the production, metabolism and action of thyroid hormones. Most of these agents, in sufficient doses, interfere with thyroid function and their effect can be detected by an increase of the serums TSH levels or a decrease in the levels of thyroxine (T4) or T3. Animal and human studies, especially those looking at brain development, suggest that the disruption of local thyroid hormone production or action is possible, but is difficult to detect from circulating thyroid hormone levels. There are also some agents, such as polychlorinated biphenyls (PCBs), that can act endogenously as thyroid hormone antagonists. The challenge is to determine the impact on specific thyroid functions due to an individual's exposure to any environmental toxicant.
Bayesian variable selection for the Cox regression model with missing covariates
Creators: name: Kim, Sungduk
name: Chen, Ming-Hui
name: Ibrahim, Joseph G.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2008

description: In this paper, we develop Bayesian methodology and computational algorithms for variable subset selection in Cox proportional hazards models with missing covariate data. A new joint semi-conjugate prior for the piecewise exponential model is proposed in the presence of missing covariates and its properties are examined. The covariates are assumed to be missing at random (MAR). Under this new prior, a version of the Deviance Information Criterion (DIC) is proposed for Bayesian variable subset selection in the presence of missing covariates. Monte Carlo methods are developed for computing the DICs for all possible subset models in the model space. A Bone Marrow Transplant (BMT) dataset is used to illustrate the proposed methodology.
Modelling the magnetic activity & filtering radial velocity curves of young Suns: the weak-line T Tauri star LkCa 4
Creators: name: Donati, J. -F.
name: Hebrard, E.
name: Hussain, G.
name: Moutou, C.
name: Grankin, K.
name: Boisse, I.
name: Morin, J.
name: Gregory, S. G.
name: Vidotto, A. A.
name: Bouvier, J.
name: Alencar, S. H. P.
name: Delfosse, X.
name: Doyon, R.
name: Takami, M.
name: Jardine, M. M.
name: Fares, R.
name: Cameron, A. C.
name: Menard, F.
name: Dougados, C.
name: Herczeg, G.
name: collaboration, the MaTYSSE
Publisher: name: arXiv
Year: 2014
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We report results of a spectropolarimetric and photometric monitoring of the weak-line T Tauri star LkCa4 within the MaTYSSE programme, involving ESPaDOnS at the Canada-France-Hawaii Telescope. Despite an age of only 2Myr and a similarity with prototypical classical T Tauri stars, LkCa4 shows no evidence for accretion and probes an interesting transition stage for star and planet formation. Large profile distortions and Zeeman signatures are detected in the unpolarized and circularly-polarized lines of LkCa4 using Least-Squares Deconvolution (LSD), indicating the presence of brightness inhomogeneities and magnetic fields at the surface of LkCa4. Using tomographic imaging, we reconstruct brightness and magnetic maps of LkCa4 from sets of unpolarized and circularly-polarized LSD profiles. The large-scale field is strong and mainly axisymmetric, featuring a ~2kG poloidal component and a ~1kG toroidal component encircling the star at equatorial latitudes - the latter making LkCa4 markedly different from classical TTauri stars of similar mass and age. The brightness map includes a dark spot overlapping the magnetic pole and a bright region at mid latitudes - providing a good match to the contemporaneous photometry. We also find that differential rotation at the surface of LkCa4 is small, typically ~5.5x weaker than that of the Sun, and compatible with solid-body rotation. Using our tomographic modelling, we are able to filter out the activity jitter in the RV curve of LkCa4 (of full amplitude 4.3km/s) down to a rms precision of 0.055km/s. Looking for hot Jupiters around young Sun-like stars thus appears feasible, even though we find no evidence for such planets around LkCa4.
description: MNRAS in press (11 pages, 8 figures, 2 tables)
Additive transformation models for clustered failure time data
Creators: name: Zeng, Donglin
name: Cai, Jianwen
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2010

description: We propose a class of additive transformation risk models for clustered failure time data. Our models are motivated by the usual additive risk model for independent failure times incorporating a frailty with mean one and constant variability which is a natural generalization of the additive risk model from univariate failure time to multivariate failure time. An estimating equation approach based on the marginal hazards function is proposed. Under the assumption that cluster sizes are completely random, we show the resulting estimators of the regression coefficients are consistent and asymptotically normal. We also provide goodness-of-fit test statistics for choosing the transformation. Simulation studies and real data analysis are conducted to examine the finite-sample performance of our estimators.
Partir de ese dolor. Educación rural, precariedad y poder territorial: Pensar y sentir desde y con el corazón de la tierra
Creators: name: Canaza-Choque, Franklin Américo
Publisher: name: figshare
Year: 2022
Subjects: subject: 130302 Comparative and Cross-Cultural Education
subject: FOS: Educational sciences
subject: 130201 Creative Arts, Media and Communication Curriculum and Pedagogy
subject: 130202 Curriculum and Pedagogy Theory and Development
subject: 130299 Curriculum and Pedagogy not elsewhere classified
subject: 130203 Economics, Business and Management Curriculum and Pedagogy
subject: 220202 History and Philosophy of Education
subject: FOS: Philosophy, ethics and religion
subject: 130205 Humanities and Social Sciences Curriculum and Pedagogy (excl. Economics, Business and Management)
subject: 130207 LOTE, ESL and TESOL Curriculum and Pedagogy (excl. Maori)

description: Se analiza y discute a un nivel teórico, sobre aquella educación rural, de las limitaciones que la postergan y las fallas estructurales que la acompañan en el trayecto de poder educar en tiempos en donde su espacio tanto fuera como adentro se han visto amenazados. En esa línea, una primera discusión orbita dentro de las aulas, de aquello que se enseña con el discurso pedagógico como verdadero y real, y que pese a la existencia de barreras y muros que vedan el aprendizaje, los estudiantes no solo luchan diariamente por comprender lo que se les está enseñando dentro de esas cuatro paredes casi quebradas por el olvido. Sino que, un segundo altercado, no menos importante, descansa una vez que se sale de esas fronteras. Por esas regiones alejadas y poco accesibles se encuentran las zonas de sacrificio, espacios donde el capital en su versión más amplia ha imprimido enormes descargas de desocupación y daño territorial. La misma que sugiere a la escuela rural en el marco de las relaciones de poder y de lucha contra-hegemónica, pensar y sentir desde y con el corazón de la tierra. Una que provoca ser otro desafío no muy apartado de su propia realidad.
Attestation Mechanisms for Trusted Execution Environments Demystified
Creators: name: Ménétrey, Jämes
name: Göttel, Christian
name: Khurshid, Anum
name: Pasin, Marcelo
name: Felber, Pascal
name: Schiavoni, Valerio
name: Raza, Shahid
Publisher: name: arXiv
Year: 2022
Subjects: subject: Cryptography and Security (cs.CR)
subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: FOS: Computer and information sciences

description: Attestation is a fundamental building block to establish trust over software systems. When used in conjunction with trusted execution environments, it guarantees the genuineness of the code executed against powerful attackers and threats, paving the way for adoption in several sensitive application domains. This paper reviews remote attestation principles and explains how the modern and industrially well-established trusted execution environments Intel SGX, Arm TrustZone and AMD SEV, as well as emerging RISC-V solutions, leverage these mechanisms.
description: This publication incorporates results from the VEDLIoT project, which received funding from the European Union's Horizon 2020 research and innovation programme under grant agreement No 957197. arXiv admin note: substantial text overlap with arXiv:2204.06790
Additive–multiplicative rates model for recurrent events
Creators: name: Wu, Yuanshan
name: Zhou, Haibo
name: Liu, Yanyan
name: Cai, Jianwen
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2010

description: Recurrent events are frequently encountered in biomedical studies. Evaluating the covariates effects on the marginal recurrent event rate is of practical interest. There are mainly two types of rate models for the recurrent event data: the multiplicative rates model and the additive rates model. We consider a more flexible additive–multiplicative rates model for analysis of recurrent event data, wherein some covariate effects are additive while others are multiplicative. We formulate estimating equations for estimating the regression parameters. The estimators for these regression parameters are shown to be consistent and asymptotically normally distributed under appropriate regularity conditions. Moreover, the estimator of the baseline mean function is proposed and its large sample properties are investigated. We also conduct simulation studies to evaluate the finite sample behavior of the proposed estimators. A medical study of patients with cystic fibrosis suffered from recurrent pulmonary exacerbations is provided for illustration of the proposed method.
How to structure citations data and bibliographic metadata in the OpenCitations accepted format
Creators: name: Massari, Arcangelo
name: Heibi, Ivan
Publisher: name: arXiv
Year: 2022
Subjects: subject: Digital Libraries (cs.DL)
subject: FOS: Computer and information sciences

description: The OpenCitations organization is working on ingesting citation data and bibliographic metadata directly provided by the community (e.g., scholars and publishers). The aim is to improve the general coverage of open citations, which is still far from being complete, and use the provided metadata to enrich the characterization of the citing and cited entities. This paper illustrates how the citation data and bibliographic metadata should be structured to comply with the OpenCitations accepted format.
description: 5 pages, submitted to JCDL 2022
Spin-orbit excitons and electronic configuration of the $5d^4$ insulator Sr$_3$Ir$_2$O$_7$F$_2$
Creators: name: Porter, Zach
name: Sarte, Paul M.
name: Petersen, Thorben
name: Upton, Mary H.
name: Hozoi, Liviu
name: Wilson, Stephen D.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Here we report on the low-energy excitations within the paramagnetic spin-orbit insulator Sr$_3$Ir$_2$O$_7$F$_2$ studied via resonant inelastic X-ray scattering, \textit{ab initio} quantum chemical calculations, and model-Hamiltonian simulations. This material is a unique $d^{4}$ Ir$^{5+}$ analog of Sr$_3$Ir$_2$O$_7$ that forms when F ions are intercalated within the SrO layers spacing the square lattice IrO$_{6}$ bilayers of Sr$_3$Ir$_2$O$_7$. Due to the large distortions about the Ir$^{5+}$ ions, our computations demonstrate that a large single-ion anisotropy yields an $S$=1 ($L{\approx}$1, $J{\approx}$0) ground state wave function. Weakly coupled, excitonic modes out of the $S_z$=0 ground state are observed and are well-described by a phenomenological spin-orbit exciton model previously developed for $3d$ and $4d$ transition metal ions. The implications of our results regarding the interpretation of previous studies of hole-doped iridates close to $d^{4}$ fillings are discussed.
description: 6 pages, 3 figures
Οι πρωτοβυζαντινοί αμφορείς από το Ευπαλίνειο Όρυγμα της Σάμου: Μια επανεξέταση
Creators: name: Παπαποστόλου, Φώτης Αντωνίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2023
Subjects: Σάμος
Ευπαλίνειο Όρυγμα
Αμφορείς
Samos
Eupalinos Tunnel
Amphorae

description: Το 19ο και 20ο αιώνα, το Γερμανικό Αρχαιολογικό Ινστιτούτο Αθηνών πραγματοποίησε ανασκαφές εντός του Ευπαλίνειου Ορύγματος στο νησί της Σάμου. Οι ανασκαφικές εργασίες διέκριναν μια μεγάλη φάση χρήσης του ορύγματος κατά την πρωτοβυζαντινή περίοδο, η οποία χρονολογήθηκε στον 7ο αιώνα μ.Χ. λόγω των πολυάριθμων νομισμάτων Φωκά, Ηρακλείου και Κώνσταντα Β’. Οι ανασκαφείς υποστήριξαν ότι το όρυγμα του Ευπαλίνου χρησιμοποιήθηκε ως τόπος καταφυγής κατά το α΄και γ΄τέταρτο του 7ου αιώνα, με αφορμή τις περσικές και μετέπειτα αραβικές επιδρομές. Στο πλαίσιο αυτής της ερμηνείας ο Hautumm παρουσίασε την τυπολογία των πρωτοβυζαντινών αμφορέων και χρονολόγησε το υλικό αυστηρά στο α΄και γ΄τέταρτο του 7ου αιώνα. Η παρούσα εργασία έχει σκοπό να επανεξετάσει τους συγκεκριμένους αμφορείς και να προτείνει μια νέα τυπολογία βασισμένη στα στοιχεία της νέας έρευνας. Επιπλέον, αναφέρονται προβληματισμοί σχετικά με την τεκμηρίωση των επιδρομών στη Σάμο κατά τον 7ο αιώνα και στην μέθοδο χρονολόγησης της πρωτοβυζαντινής φάσης του Ευπαλίνειου Ορύγματος. Εν συνεχεία επιχειρείται να δοθεί μια νέα ερμηνεία χρήσης και χρονολόγησης της πρωτοβυζαντινής φάσης του Ευπαλίνειου Ορύγματος μέσα από το υλικό που μελετήθηκε. Τέλος, γίνεται λόγος για τα εμπορικά δίκτυα και τις επαφές του νησιού μέσα από τη διάδοση των κεραμικών τύπων.
description: In the 19th and 20th centuries, the German Archaeological Institute of Athens carried out excavations inside the Eupalinos Tunnel at the island of Samos. The excavations revealed many findings, dating to the early byzantine period and especially to the 7th century AD, due to the numerous coins of Phocas, Heraclius and Constans II. The excavators supported that the tunnel was used as a refuge place in the first and third quarter of the 7th century in order to protect the inhabitants from the persian and later arab raids. Hautumm presented the typology of the early byzantine amphorae and he dated the material strictly to the first and third quarter of the 7th century. The aim of the thesis is the reexamination of these amphorae and the new typology based on the new data. In addition, the present work mentions the problems regarding the documentation of the raids on Samos during the 7th century and the method of dating the early byzantine phase of the Eupalinος Tunnel. Subsequently, an attempt is made to give a new interpretation of use and dating of the early byzantine phase of the Eupalinos Tunnel through the material studied. Finally there is a reference about the trade networks of Samos through the dissemination of ceramic types.
$\mathcal{PT}$ Symmetric Hamiltonian Model and Exactly Solvable Potentials
Creators: name: Yeşiltaş, Özlem
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Searching for non-Hermitian (parity-time)$\mathcal{PT}$-symmetric Hamiltonians \cite{bender} with real spectra has been acquiring much interest for fourteen years. In this article, we have introduced a $\mathcal{PT}$ symmetric non-Hermitian Hamiltonian model which is given as $\hat{\mathcal{H}}=ω(\hat{b}^\dagger\hat{b}+\frac{1}{2})+ α(\hat{b}^{2}-(\hat{b}^\dagger)^{2})$ where $ω$ and $α$ are real constants, $\hat{b}$ and $\hat{b^\dagger}$ are first order differential operators. Moreover, Pseudo-Hermiticity that is a generalization of $\mathcal{PT}$ symmetry has been attracting a growing interest \cite{mos}. Because the Hamiltonian $\mathcal{H}$ is pseudo-Hermitian, we have obtained the Hermitian equivalent of $\mathcal{H}$ which is in Sturm- Liouville form leads to exactly solvable potential models which are effective screened potential and hyperbolic Rosen-Morse II potential. $\mathcal{H}$ is called pseudo-Hermitian, if there exists a Hermitian and invertible operator $η$ satisfying $\mathcal{H^\dagger}=η\mathcal{H} η^{-1}$. For the Hermitian Hamiltonian $h$, one can write $h=ρ\mathcal{H} ρ^{-1}$ where $ρ=\sqrtη$ is unitary. Using this $ρ$ we have obtained a physical Hamiltonian $h$ for each case. Then, the Schrödinger equation is solved exactly using Shape Invariance method of Supersymmetric Quantum Mechanics \cite{susy1}. Mapping function $ρ$ is obtained for each potential case.
description: Conference Proceeding
Joint covariate-adjusted score test statistics for recurrent events and a terminal event
Creators: name: Song, Rui
name: Cai, Jianwen
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2010

description: Recurrent events data are frequently encountered and could be stopped by a terminal event in clinical trials. It is of interest to assess the treatment efficacy simultaneously with respect to both the recurrent events and the terminal event in many applications. In this paper we propose joint covariate-adjusted score test statistics based on joint models of recurrent events and a terminal event. No assumptions on the functional form of the covariates are needed. Simulation results show that the proposed tests can improve the efficiency over tests based on covariate unadjusted model. The proposed tests are applied to the SOLVD data for illustration.
Islamic and capitalist economies: Comparison using econophysics models of wealth exchange and redistribution
Creators: name: Kato, Takeshi
Publisher: name: arXiv
Year: 2022
Subjects: subject: Theoretical Economics (econ.TH)
subject: Multiagent Systems (cs.MA)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Economics and business
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences
subject: 91B43, 91B70, 62P20

description: Islamic and capitalist economies have several differences, the most fundamental being that the Islamic economy is characterized by the prohibition of interest (riba) and speculation (gharar) and the enforcement of Shariah-compliant profit-loss sharing (mudaraba, murabaha, salam, etc.) and wealth redistribution (waqf, sadaqah, and zakat). In this study, I apply new econophysics models of wealth exchange and redistribution to quantitatively compare these characteristics to those of capitalism and evaluate wealth distribution and disparity using a simulation. Specifically, regarding exchange, I propose a loan interest model representing finance capitalism and riba and a joint venture model representing shareholder capitalism and mudaraba; regarding redistribution, I create a transfer model representing inheritance tax and waqf. As exchanges are repeated from an initial uniform distribution of wealth, wealth distribution approaches a power-law distribution more quickly for the loan interest than the joint venture model; and the Gini index, representing disparity, rapidly increases. The joint venture model's Gini index increases more slowly, but eventually, the wealth distribution in both models becomes a delta distribution, and the Gini index gradually approaches 1. Next, when both models are combined with the transfer model to redistribute wealth in every given period, the loan interest model has a larger Gini index than the joint venture model, but both converge to a Gini index of less than 1. These results quantitatively reveal that in the Islamic economy, disparity is restrained by prohibiting riba and promoting reciprocal exchange in mudaraba and redistribution through waqf. Comparing Islamic and capitalist economies provides insights into the benefits of economically embracing the ethical practice of mutual aid and suggests guidelines for an alternative to capitalism.
description: 17 pages, 7 figures
The Semileptonic $\overline{B}\longrightarrow Dl\overlineν$ and $\overline{B_{s}}\longrightarrow D_{s}l\overlineν$ Decays in Isgur-Wise Approach
Creators: name: Hassanabadi, H.
name: Rahmani, S.
name: Zarrinkamar, S.
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We consider a combination of linear confining and Hulthén potentials in the Hamiltonian and via the perturbation approach, report the corresponding Isgure-Wise function parameters. Next, we investigate the Isgur-Wise Function for $\overline{B}\longrightarrow Dl\overlineν$ and $\overline{B_{s}}\longrightarrow D_{s}l\overlineν$ semileptonic decays and report the decay width, branching ratio and $|V_{cb}|$ CKM matrix element. A comparison with other models and experimental values is included.
description: any comment is welcome
Semiparametric proportional means model for marker data contingent on recurrent event
Creators: name: Zeng, Donglin
name: Cai, Jianwen
name: Pan, Wenqin
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2010

description: In many biomedical studies with recurrent events, some markers can only be measured when events happen. For example, medical cost attributed to hospitalization can only incur when patients are hospitalized. Such marker data are contingent on recurrent events. In this paper, we present a proportional means model for modelling the markers using the observed covariates contingent on the recurrent event. We also model the recurrent event via a marginal rate model. Estimating equations are constructed to derive the point estimators for the parameters in the proposed models. The estimators are shown to be asymptotically normal. Simulation studies are conducted to examine the finite-sample properties of the proposed estimators and the proposed method is applied to a data set from the Vitamin A Community Trial.
Una lente sull’incendio delle Navi romane di Nemi
Creators: name: Altamura, Flavio;Paolucci, Stefano
Publisher: name: La Rivista di Engramma
Year: 2023
Subjects: Second World War
Nemi ships
Alban Hills
Protection of Works of Art

description: In this article we present a summary of the research method and of the results of our work L’incendio delle navi di Nemi. Indagine su un cold case della Seconda guerra mondiale (Grottaferrata: Passamonti, 2023), which investigates and reconstructs the etiology of the disaster that occurred at Nemi, Central Italy, on May 31, 1944, when the two ships of the Emperor Caligula were lost forever due to a fire which had broken out in the museum that housed them. Our scientific and historiographical analysis led us to believe that the blaze was accidentally started by Allied artillery shells, and not deliberately set by the German soldiers as established by the official enquiry in 1944. We also offer further insights and reflections on the topic and its impact on public opinion and the scientific community.
Bayesian local influence for survival models
Creators: name: Ibrahim, Joseph G.
name: Zhu, Hongtu
name: Tang, Niansheng
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2011

description: The aim of this paper is to develop a Bayesian local influence method (Zhu et al. 2009, submitted) for assessing minor perturbations to the prior, the sampling distribution, and individual observations in survival analysis. We introduce a perturbation model to characterize simultaneous (or individual) perturbations to the data, the prior distribution, and the sampling distribution. We construct a Bayesian perturbation manifold to the perturbation model and calculate its associated geometric quantities including the metric tensor to characterize the intrinsic structure of the perturbation model (or perturbation scheme). We develop local influence measures based on several objective functions to quantify the degree of various perturbations to statistical models. We carry out several simulation studies and analyze two real data sets to illustrate our Bayesian local influence method in detecting influential observations, and for characterizing the sensitivity to the prior distribution and hazard function.
Soft striped magnetic fluctuations competing with superconductivity in Fe_{1+x}Te
Creators: name: Stock, C.
name: Rodriguez, E. E.
name: Sobolev, O.
name: Rodriguez-Rivera, J. A.
name: Ewings, R. A.
name: Taylor, J. W.
name: Christianson, A. D.
name: Green, M. A.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Neutron spectroscopy is used to investigate the magnetic fluctuations in Fe_{1+x}Te - a parent compound of chalcogenide superconductors. Incommensurate "stripe-like" excitations soften with increased interstitial iron concentration. The energy crossover from incommensurate to stripy fluctuations defines an apparent hour-glass dispersion. Application of sum rules of neutron scattering find that the integrated intensity is inconsistent with an S=1 Fe^{2+} ground state and significantly less than S=2 predicted from weak crystal field arguments pointing towards the Fe^{2+} being in a superposition of orbital states. The results suggest that a highly anisotropic order competes with superconductivity in chalcogenide systems.
description: (7 pages and 8 pages supplementary information, to be published in Physical Review B)
Two-terminal source coding with common sum reconstruction
Creators: name: Adikari, Tharindu
name: Draper, Stark
Publisher: name: arXiv
Year: 2022
Subjects: subject: Information Theory (cs.IT)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: We present the problem of two-terminal source coding with Common Sum Reconstruction (CSR). Consider two terminals, each with access to one of two correlated sources. Both terminals want to reconstruct the sum of the two sources under some average distortion constraint, and the reconstructions at two terminals must be identical with high probability. In this paper, we develop inner and outer bounds to the achievable rate distortion region of the CSR problem for a doubly symmetric binary source. We employ existing achievability results for Steinberg's common reconstruction and Wyner-Ziv's source coding with side information problems, and an achievability result for the lossy version of Korner-Marton's modulo-two sum computation problem.
description: This paper was presented at the IEEE International Symposium on Information Theory (ISIT), Helsinki, Finland, June 2022
Marginal hazard regression for correlated failure time data with auxiliary covariates
Creators: name: Zhou, Haibo
name: Cai, Jianwen
name: Yuan, Zhongshang
name: Liu, Yanyan
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2012

description: In many biomedical studies, it is common that due to budget constraints, the primary covariate is only collected in a randomly selected subset from the full study cohort. Often, there is an inexpensive auxiliary covariate for the primary exposure variable that is readily available for all the cohort subjects. Valid statistical methods that make use of the auxiliary information to improve study efficiency need to be developed. To this end, we develop an estimated partial likelihood approach for correlated failure time data with auxiliary information. We assume a marginal hazard model with common baseline hazard function. The asymptotic properties for the proposed estimators are developed. The proof of the asymptotic results for the proposed estimators is nontrivial since the moments used in estimating equation are not martingale-based and the classical martingale theory is not sufficient. Instead, our proofs rely on modern empirical theory. The proposed estimator is evaluated through simulation studies and is shown to have increased efficiency compared to existing methods. The proposed methods are illustrated with a data set from the Framingham study.
Craters in Maps given by Spaceborne Digital Elevation Models
Creators: name: Sparavigna, Amelia Carolina
Publisher: name: Zenodo
Year: 2022
Subjects: Craters
Google Earth
Spaceborne Digital Elevation Models
Satellite imagery
Libya
Sudan
Arabia

description: In the proposed discussion we stress the possibility to use maps from Spaceborne Digital Elevation Models (DEMs) to analyse the topography of craters or crater-like structures. The Digital Elevation Model here used is that proposed by Yamazaki, Ikeshima, Tawatari, Yamaguchi, O'Loughlin, Neal, Sampson, Kanae and Bates, in the Geophysical Research Letters, 2017, and implemented at the web site it-ch.topographic-map.com . Crater-like structures can be observed in visible satellite images, but elevation profiles are fundamental to understand their geological nature. Here we will show that the DEM maps are able to easily evidence the elevation features, giving the possibility of a first remote analysis of them.
Καταγραφή των Αυτοκτονιών στο Βορειοελλαδικό Χώρο τα Έτη 2005-2014
Creators: name: Πλουσίου, Αναστασία Νικολάου
Publisher: name: Aristotle University of Thessaloniki
Year: 2023
Subjects: subject: Αυτοκτονία
subject: Ιατροδικαστική Υπηρεσία
subject: Ψυχολογία
subject: Suicide
subject: Forensic Service
subject: Psychology
subject: FOS: Psychology

description: Σκοπός της διατριβής ήταν η μελέτη των αυτοκτονιών στο Βορειοελλαδικό χώρο σε χρονικό εύρος μιας δεκαετίας. Εξετάσαμε τα δεδομένα και τα αποτελέσματα ερευνών αυτοχειρίας προηγούμενων ετών και διαφορετικών πολιτισμών, ενώ μελετήσαμε τις ιατροδικαστικές εκθέσεις της Ιατροδικαστικής Υπηρεσίας Θεσσαλονίκης και επιλέξαμε να συμπεριλάβουμε στην έρευνα μόνο τις αυτοκτονίες. Στη συνέχεια παρουσιάσαμε αναλυτικά τα στατιστικά στοιχεία των αποτελεσμάτων των ιατροδικαστικών εκθέσεων αυτών των αυτοκτονιών, καθώς και τους δείκτες που διαμορφώνουν το φαινόμενο της αυτοκτονίας, (φύλο, ηλικία, εθνικότητα, υγεία, καταγωγή, τρόπος αυτοκτονίας, τόπος αυτοκτονίας, προηγούμενες απόπειρες αυτοκτονίας). Ακόμη αναφερθήκαμε αναλυτικά στις αιτίες της αυτοκτονίας, οι οποίες διαμόρφωσαν το συγκεκριμένο δείγμα ατόμων και μας απασχόλησε η κατανόηση των παραγόντων που υποβόσκουν αυτών των αιτιών, όπως η ομοιόσταση και ο κιρκαδικός ρυθμός. Ένα άλλο θέμα που θίξαμε ήταν οι μελλοντικές παρεμβάσεις που θα πρέπει να γίνουν και η αλλαγή του τρόπου αντιμετώπισης του φαινομένου της αυτοχειρίας, με απώτερο σκοπό την εξάλειψή του. Ασχοληθήκαμε επιπλέον με την ιστορική διάσταση του φαινομένου της αυτοχειρίας και διαπιστώσαμε την παρουσία του από την αρχαιότητα μέχρι σήμερα.
description: The aim of the present thesis was the study of suicides in north Greece in a time range of a decade. We examined the data and the results of studies of suicide of different and past civilizations, while we also studied the forensic examinations of Thessaloniki’s Forensic Service and we chose to include only suicides in this research. Then we presented analytically the statistical data of the results of these suicides, as well the indexes that configure the suicide phenomenon (gender, age, nationality, health, ancestry, the way of suicide, the place of suicide, suicide attempts in the past). Furthermore, we analyzed the reasons of suicide that configured this sample of people concerning the comprehension of the factors that lurking of these reasons, as the hemeostasis and the circadian rate. We also examined the future interventions that must occur and the change of the way we confront the suicide phenomenon, with ultimate aim the phenomenon erasing. Another aim of this study was to examine the historical dimension of the suicide phenomenon and then we realised that this exists from past till these days.