cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Cognitive tests aid in clinical differentiation of Alzheimer's disease versus Alzheimer's disease with Lewy body disease: Evidence from a pathological study
Creators: name: Azar, Martina
name: Chapman, Silvia
name: Gu, Yian
name: Leverenz, James B.
name: Stern, Yaakov
name: Cosentino, Stephanie
Publisher: name: Columbia University
Year: 2020
Subjects: Cognition disorders--Testing
Alzheimer's disease
Lewy body dementia

description: Introduction: Clinical differentiation between Alzheimer's disease (AD) and AD with Lewy body disease (LBD) is relatively imprecise. The current study examined pathologically confirmed group differences in neuropsychological functioning, and the classification ability of specific tests. Methods: Fifty‐one participants with postmortem diagnoses of AD (n = 34) and AD plus LBD (n = 17) were drawn from the Predictors Study. One‐way analyses of variance (ANOVAs) and χ2 analyses examined group differences in neuropsychological performance. Binary logistic regressions examined predictive utility of specific tests for pathological diagnosis. Results: Individuals with AD had better visuoconstruction (P = .006), phonemic fluency (P = .08), and processing speed than AD plus LBD (P = .013). No differences were found in memory, naming, semantic fluency, or set‐switching. Processing speed and visuoconstruction predicted pathologic group (P = .03). Discussion: Processing speed and visuoconstruction predicted postmortem diagnosis of AD versus AD plus LBD. Current results offer guidance in the selection and interpretation of neuropsychological tests to be used in the differential diagnosis of early dementia.
The Ultraviolet/optical variability of steep-spectrum radio quasars: the change in accretion rate ?
Creators: name: Gu, Minfeng
name: Li, Shuang-Liang
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Context. The steep-spectrum radio quasars (SSRQs) are powerful radio sources, with thermal emission from accretion disk and jet nonthermal emission likely both contributing in the Ultraviolet (UV)/optical luminosity, however the former may play a dominant role. While the UV/optical variability of SSRQs has been poorly studied, little is known on the mechanism of their variability. Aims. We investigate the mechanism of the UV/optical variability of SSRQs. Methods. A sample of eighteen SSRQs has been established in SDSS Stripe 82 region in our previous works, in which the flux and spectral variability have been studied. In this work, we construct the flux-flux diagram using SDSS u and i multi-epoch data for these eighteen SSRQs. The standard accretion disk model is used to fit the flux-flux variations, in order to explore the variability mechanism. Results. The model fit to flux-flux diagram are tuned with fixed black hole mass and varying accretion rate. We found that the flux-flux diagram of all our SSRQs can be qualitatively described by the standard accretion disk model with change of the accretion rate. Although non-thermal jet power-law emission can also qualitatively reproduce the variability, the reasonable accretion rates and black hole masses required to fit the flux-flux variations suggest that a disk emission with variable accretion rate is a plausible description of the data.
description: 9 pages, 2 figures, 1 table, accepted to A&A, title changed
Dependence Clusters in Alzheimer Disease and Medicare Expenditures: A Longitudinal Analysis From the Predictors Study
Creators: name: Zhu, Carolyn W.
name: Lee, Seonjoo
name: Ornstein, Katherine A.
name: Cosentino, Stephanie
name: Gu, Yian
name: Andrews, Howard F.
name: Stern, Yaakov
Publisher: name: Columbia University
Year: 2020
Subjects: Alzheimer's disease
Dementia--Patients--Care
Medicare
Medical care, Cost of--Evaluation

description: Introduction: Dependence in Alzheimer disease has been proposed as a holistic, transparent, and meaningful representation of disease severity. Modeling clusters in dependence trajectories can help understand changes in disease course and care cost over time. Methods: Sample consisted of 199 initially community-living patients with probable Alzheimer disease recruited from 3 academic medical centers in the United States followed for up to 10 years and had ≥2 Dependence Scale recorded. Nonparametric K-means cluster analysis for longitudinal data (KmL) was used to identify dependence clusters. Medicare expenditures data (1999-2010) were compared between clusters. Results: KmL identified 2 distinct Dependence Scale clusters: (A) high initial dependence, faster decline, and (B) low initial dependence, slower decline. Adjusting for patient characteristics, 6-month Medicare expenditures increased over time with widening between-cluster differences. Discussion: Dependence captures dementia care costs over time. Better characterization of dependence clusters has significant implications for understanding disease progression, trial design and care planning.
title: Ανάλυση συστήματος συμπαραγωγής με αεριοστρόβιλο και μονάδα ανάκτησης θερμότητας καυσαερίων
title: Gas turbine conceptual analysis of a cogeneration system, with a heat recovery steam generation
titleType: AlternativeTitle
Creators: name: Σαμπάνης, Νικόλαος
Publisher: name: Πανεπιστήμιο Δυτικής Αττικής
Year: 2022
Subjects: Μονάδες ανάκτησης θερμότητας
Κύκλος Brayton
Αεριοστρόβιλος
Φυσικό αέριο
Θερμότητα
Θερμοκρασία καύσης
Μεταφορά θερμότητας
Εναλλάκτες θερμότητας

description: Η παρούσα διπλωματική εργασία εκπονήθηκε με σκοπό να μελετήσουμε ένα σύστημα συμπαραγωγής και να αναλύσουμε τα επιμέρους στοιχεία που την αποτελούν. Τα τελευταία χρόνια έχει παρατηρηθεί μεγάλη αύξηση των συστημάτων αυτών λόγω των ευκολιών που παρέχει και λόγω του ότι είναι φιλικό προς το περιβάλλον σε σύγκριση με αλλά συστήματα παραγωγής ηλεκτρικής ενέργειας. Στη συγκεκριμένη εργασία θα μελετήσουμε την εγκατάσταση αεριοστροβίλου. Θα αναλύσουμε τις συνθήκες που επικρατούν σε ένα αεριοστρόβιλο και θα γνωρίσουμε τα επιμέρους εξαρτήματά τους. Επίσης θα δούμε τους θερμοδυναμικούς νόμους που εφαρμόζονται. Αξίζει να σημειωθεί ότι θα δούμε και θα εξηγήσουμε τις συνθήκες που επικρατούν μέσα στο χώρο καύσης ενός αεριοστροβίλου καθώς και τους περιορισμούς τους οποίους έχουμε. Ένα άλλο σημαντικό κομμάτι που έχει το συγκεκριμένο σύστημα, είναι η μονάδα ανάκτησης θερμότητας καυσαερίων (HRSG). Θα δούμε και θα αναλύσουμε πως η ενέργεια που περιέχεται στα καυσαέρια, αντί να φύγει στο περιβάλλον σαν θερμότητα, μπορούμε να την χρησιμοποιήσουμε προς όφελος μας.
The failure of pressurized thin-walled cylinders
Creators: name: Gloria, Ruben M.
Publisher: name: California Institute of Technology
Year: 1957
Subjects: Aeronautics

description: NOTE:  Text or symbols not renderable in plain ASCII are indicated by [...]. Abstract is included in .pdf document.

The object of this research was to find significant parameters in the failure of thinwalled internally pressurized cylinders. The following tests were made: (a) original crack length variation; (b) crack angle variation; (c) variation of velocity of penetration and (d) shape of a penetrating object; (e) cycling of internal pressure; and (f) change of loading media. The corresponding results were as follows: 2 (a) the crack length parameter [...] was found to bear importantly on the failing pressure of prepunctured cylinders; (b) an increase in failing pressure was achieved by changing the crack angle, originally parallel to the cylinder axis, to a perpendicular position; (c) explosive pressure level increased with decreased projectile velocity; (d) nondimensional explosive level increased with increased projectile sharpness, cylinder thickness and diameter; (e) pressure cycling tests revealed relatively fast crack growth during the first part of the life, followed by stabilization, and suceeded by another fast growth and failure; (f) a change from air to water as loading media made no effect on the static failing pressure of prepunctured cylinders.

The following tests are recommended: (a) determination of a parameter more generalized than [...] involving cylinder length; (b) more crack angle tests to obtain a family of [...] curves for various crack lengths from which effective crack lengths may be obtained; (c) explosive level runs using higher velocity and true conical projectiles; (d) pressure cycling tests to find the effect of cycling stress level on crack propagation; and (e) crack propagation by vibration, using different loading media.
Stability Analysis for Cosmic-Ray Heating of Cool Cores in Galaxy Clusters
Creators: name: Fujita, Yutaka
name: Kimura, Sota
name: Ohira, Yutaka
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We study the heating of the cool cores in galaxy clusters by cosmic-rays (CRs) accelerated by the central active galactic nuclei (AGNs). We especially focus on the stability of the heating. The CRs stream with Alfvén waves in the intracluster medium (ICM) and heat the ICM. First, assuming that the heating and radiative cooling is balanced, we search steady state solutions for the ICM and CR profiles of clusters by solving a boundary value problem. The boundary conditions are set so that the solutions are consistent with observations of clusters. We find steady state solutions if the magnetic fields are strong enough and the association between the magnetic fields and the ICM is relatively weak. Then, we analyse the stability of the solutions via a Lagrangian perturbation analysis and find that the solutions are globally stable. We confirm the results by numerical simulations. Using the steady state solutions as the initial conditions, we follow the evolution of the profiles for 100 Gyr. We find that the profiles do not evolve on time scales much larger than cluster lifetimes. These results, as well as consistency with observations of radio mini-halos, suggest that the CR heating is a promising mechanism to solve the so-called "cooling flow problem".
description: Accepted for publication in MNRAS
title: Η μερισματική πολιτική των ναυτιλιακών εταιρειών
title: Dividend policy of shipping companies
titleType: AlternativeTitle
Creators: name: Καράμπελας, Οδυσσέας
Publisher: name: Πανεπιστήμιο Δυτικής Αττικής
Year: 2022
Subjects: Μερισματική απόδοση
Ναυτιλία
Ναυτιλιακές εταιρείες
Μερισματική πολιτική
Shipping
Shipping companies
Dividend policy
Dividend yield

description: Την μερισματική πολιτική των ναυτιλιακών επιχειρήσεων αφορά η συγκεκριμένη διπλωματική διατριβή. Πιο αναλυτικά, η παρούσα διπλωματική διατριβή σχετίζεται με τον εντοπισμό της μερισματικής πολιτικής που ακολουθούν οι εταιρείες, λαμβάνοντας όμως ως παράδειγμα την περίπτωση ενός συγκεκριμένου αριθμού ελληνικών ναυτιλιακών εταιρειών, οι οποίες όμως είναι εισηγμένες σε ξένα χρηματιστήρια. Στην παρούσα διπλωματική εργασία, οι ελληνικές ναυτιλιακές επιχειρήσεις που εξετάζονται είναι η Costamare, η Danaos shipping, η Tsakos Energy Navigation, η Navios Maritime, η Diana shipping, η Star bulk carriers, και η Dorian LPG. Όπως αναφέρθηκε και παραπάνω, οι επιλεγμένες ναυτιλιακές εταιρείες είναι εισηγμένες σε ξένα χρηματιστήρια, όπως στο χρηματιστήριο του Λονδίνου και το χρηματιστήριο της Νέας Υόρκης. Επιπρόσθετα, πραγματοποιείται ανάλυση των αναφερόμενων ελληνικών ναυτιλιακών εταιρειών σύμφωνα με την μερισματική απόδοση αυτών των ναυτιλιακών επιχειρήσεων που καταγράφεται το χρονικό διάστημα 2014 έως και το 2020, το ποσοστό των διανεμόμενων κερδών στο ίδιο χρονικό διάστημα (2014 – 2020), καθώς και τα κέρδη.
Bygones in a public project
Creators: name: Haita-Falah, Corina
Publisher: name: Universität Kassel
Year: 2021
Subjects: subject: 330
subject: Öffentliches Gut
subject: Rückmeldung
subject: Verhalten
subject: Unterstützung
subject: Experiment

description: European Union (EU) Horizon 2020 program, action ERC-2014-STG, Project HUCO, grant number 636746; Gefördert im Rahmen des Projekts DEAL
Wilhelm Pfaffel / Michael Lobe, Praxis des lateinischen Sprachunterrrichts - Tipps für einen vitalen Lateinunterricht
Creators: name: Lütke Börding, Cornelia
Publisher: name: Forum Classicum
Year: 2017

description: Rezension zu: Wilhelm Pfaffel / Michael Lobe, Praxis des lateinischen Sprachunterrrichts - Tipps für einen vitalen Lateinunterricht. Bamberg 2016. (ISBN 978-3-7661-8006-3)
description: Forum Classicum, Nr. 3 (2016): Forum Classicum
How large is the contribution of cosmic web to $Ω_Λ$ ? A preliminary study on a novel inhomogenous model
Creators: name: Viaggiu, Stefano
name: Montuori, Marco
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The distribution of matter in the universe shows a complex pattern, formed by cluster of galaxies, voids and filaments denoted as cosmic web. Different approaches have been proposed to model such structure in the framework of the general relativity. Recently, one of us has proposed a generalization ($Λ$FB model) of the Fractal Bubble model, proposed by Wiltshire, which accounts for such large scale structure. The $Λ$FB model is an evolution of FB model and includes in a consistent way a description of inhomogeneous matter distribution and a $Λ$ term. Here we analyze the $Λ$FB model focusing on the relation between cosmological parameters. The main result is the consistency of $Λ$CDM model values for $Ω_{\Lambda0}$ ($\approx 0.7$) and $Ω_{k0}$ ($|Ω_{k0}|
description: Final version published in IJMPD
Women have worse cognitive, functional, and psychiatric outcomes at hospital discharge after cardiac arrest
Creators: name: Agarwal, Sachin
name: Presciutti, Alex
name: Verma, Jayati
name: Pavol, Marykay A.
name: Anbarasan, Deepti
name: Brodie, Daniel
name: Rabbani, Leroy E.
name: Roh, David
name: Park, Soojin
name: Claassen, Jan
name: Stern, Yaakov
Publisher: name: Columbia University
Year: 2018
Subjects: Cardiac arrest
Women
Cognition
Mental health
Heart--Diseases--Patients

description: Aim: To examine gender differences among cardiac arrest (CA) survivors’ cognitive, functional, and psychiatric outcomes at discharge. Methods: This is a prospective, observational cohort of 187 CA patients admitted to Columbia University Medical Center, considered for Targeted Temperature Management (TTM), and survived to hospital discharge between September 2015 and July 2017. Patients with sufficient mental status at hospital discharge to engage in the Repeatable Battery for Neuropsychological Status (RBANS), Modified Lawton Physical Self-Maintenance Scale (M-PSMS), Cerebral Performance Category Scale (CPC), Center for Epidemiological Studies Depression Scale (CES-D), and Post-Traumatic Stress Disorder Checklist – Civilian Version (PCL-C) were included. Fisher’s exact, Wilcoxon Rank Sum, and regression analysis were utilized. Results: 80 patients (38% women, 44% white, mean age 53 ± 17 years) were included. No significant gender differences were found for age, race, Charlson Comorbidity Index, premorbid CPC or psychiatric diagnoses, arrest related variables, discharge CPC, or PCL-C scores. Women had significantly worse RBANS (64.9 vs 74.8, p = .01), M-PSMS (13.6 vs 10.6, p = .02), and CES-D (22.8 vs 14.3, p = .02) scores. These significant differences were maintained in multivariate models after adjusting for age, initial rhythm, time to return of spontaneous circulation, and TTM. Conclusions: Women have worse cognitive, functional, and psychiatric outcomes at hospital discharge after cardiac arrest than men. Identifying factors contributing to these differences is of great importance in cardiac arrest outcomes research.
Ultra-processed food consumption and adult obesity risk: a systematic review and dose-response meta-analysis
Creators: name: Moradi, Sajjad
name: Entezari, Mohammad Hassan
name: Mohammadi, Hamed
name: Jayedi, Ahmad
name: Lazaridi, Anastasia-Viktoria
name: Kermani, Mohammad ali Hojjati
name: Miraghajani, Maryam
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Cell Biology
subject: Physiology
subject: FOS: Biological sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: Science Policy

description: We performed this systematic review and meta-analysis to evaluate observational studies assessing the association between ultra-processed food (UPF) consumption and the risk of overweight, obesity, and abdominal obesity in the general population. We searched the databases PubMed/MEDLINE, Scopus, Embase, and ISI Web of Science from inception until December 2020. Data were extracted from 12 studies (nine cross-sectional and three cohort studies). Odds ratio (OR) were pooled using a random-effects model. UPF consumption was associated with an increased risk of obesity (OR = 1.55; 95% CI: 1.36, 1.77; I2 = 55%), overweight (OR = 1.36; 95% CI: 1.14, 1.63; I2 = 73%), and abdominal obesity (OR = 1.41; 95% CI: 1.18, 1.68; I2 = 62%). Furthermore, every 10% increase of UPF consumption in daily calorie intake was associated with a 7%, a 6%, and a 5% higher risk of overweight, obesity, and abdominal obesity, respectively. Dose-response meta-analysis of cross-sectional studies showed a positive linear association between UPF consumption and abdominal obesity. There was also a positive linear association between UPF consumption and risk of overweight/obesity in the analysis of cross-sectional studies and a positive monotonic association in the analysis of cohort studies. Our study suggests that UPF consumption is associated with an increased risk of excess weight or abdominal obesity.
Thermal entanglement in an orthogonal dimer-plaquette chain with alternating Ising-Heisenberg coupling
Creators: name: Paulinelli, H. G.
name: de Souza, S. M.
name: Rojas, Onofre
Publisher: name: arXiv
Year: 2013
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: In this paper we explore the entanglement in orthogonal dimer-plaquette Ising-Heisenberg chain, assembled between plaquette edges, also known as orthogonal dimer plaquettes. The quantum entanglement properties involving an infinite chain structure are quite important, not only because the mathematical calculation is cumbersome but also because real materials are well represented by infinite chain. Using the local gauge symmetry of this model, we are able to map onto a simple spin-1 like Ising and spin-1/2 Heisenberg dimer model with single effective ion anisotropy. Thereafter this model can be solved using the decoration transformation and transfer matrix approach. First, we discuss the phase diagram at zero temperature of this model, where we find five ground states, one ferromagnetic, one antiferromagnetic, one triplet-triplet disordered and one triplet-singlet disordered phase, beside a dimer ferromagnetic-antiferromagnetic phase. In addition, we discuss the thermodynamic properties such as entropy, where we display the residual entropy. Furthermore, using the nearest site correlation function it is possible also to analyze the pairwise thermal entanglement for both orthogonal dimers, additionally we discuss the threshold temperature of the entangled region as a function of Hamiltonian parameters. We find quite interesting thin reentrance threshold temperature for one of the dimers, and we also discuss the differences and similarities for both dimers.
description: 7 pages,8 figures
Increasing the sensitivity of functional status assessment in the preclinical range (normal to mild cognitive impairment): Exploring the IADL-Extended approach
Creators: name: Fieo, Robert A.
name: Stern, Yaakov
Publisher: name: Columbia University
Year: 2018
Subjects: Cognition
Dementia
Dementia--Diagnosis

description: Background/Aims: Dementia exhibits an insidious onset consisting of cognitive, behavioral, and functional impairment. We explored a functional continuum that extends assessment beyond the clinical instrumental activities of daily living (IADL) range and into advanced activities of daily living. Methods: We examined the predictive power (Cox regression; n = 2,471) of a unidimensional IADL-extended (IADL-x) scale for incident mild cognitive impairment (MCI). We also examined “time to MCI” as an outcome measure. Results: Each additional task endorsed on the IADL-x hierarchy (e.g., endorsing participation in 6 vs. 5 activities) resulted in a 10% reduction in MCI risk (HR 0.90, 95% CI 0.85–0.94, p < 0.001). For the fully adjusted model the risk reduction dropped to 6%. The odds of incident MCI within 2 years (for those below the median IADL-x total score) was 2.5 times higher (OR 2.60, 95% CI 1.52–4.4, p < 0.001) and 2 times higher for incident MCI within the next 5 years (OR 1.93, 95% CI 1.76–3.2, p < 0.01). Conclusion: The IADL-x metric appears to be a valid approach for determining the risk of MCI based on one’s position along a formal hierarchy of function.
Crucial aspects of the initial mass function (I): The statistical correlation between the total mass of an ensemble of stars and its most massive star
Creators: name: Cervino, Miguel
name: Romann-Zuniga, Carlos
name: Luridiana, Valentina
name: Bayo, Amelia
name: Sanchez, Nestor
name: Perez, Enrique
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Our understanding of stellar systems depends on the adopted interpretation of the IMF, phi(m). Unfortunately, there is not a common interpretation of the IMF, which leads to different methodologies and diverging analysis of observational data.We study the correlation between the most massive star that a cluster would host, mmax, and its total mass into stars, M, as an example where different views of the IMF lead to different results. We assume that the IMF is a probability distribution function and analyze the mmax-M correlation within this context. We also examine the meaning of the equation used to derive a theoretical M-char_mmax relationship, N x int[Char_mmax-mup] phi(m) dm = 1 with N the total number of stars in the system, according to different interpretations of the IMF. We find that only a probabilistic interpretation of the IMF, where stellar masses are identically independent distributed random variables, provides a self-consistent result. Neither M nor N, can be used as IMF scaling factors. In addition, Char_mmax is a characteristic maximum stellar mass in the cluster, but not the actual maximum stellar mass. A -Char_mmax correlation is a natural result of a probabilistic interpretation of the IMF; however, the distribution of observational data in the N (or M)-cmmax plane includes a dependence on the distribution of the total number of stars, N (and M), in the system, Phi(N), which is not usually taken into consideration. We conclude that a random sampling IMF is not in contradiction to a possible mmax-M physical law. However, such a law cannot be obtained from IMF algebraic manipulation or included analytically in the IMF functional form. The possible physical information that would be obtained from the N (or M)-mmax correlation is closely linked with the Phi(M) and Phi(N) distributions; hence it depends on the star formation process and the assumed.
description: Accepted by A&A; 16 pages, 10 figures
2021 ISMIR MSS Challenge - ByteMSS team - pretrained model
Creators: name: Haohe Liu
Publisher: name: Zenodo
Year: 2021

description: The model I submitted in the 2021 ISMIR MSS Challenge with 2nd performance on the vocal score and 5th performance on the overall score on Leaderboard A. AIcrowd | Music Demixing Challenge @ISMIR 2021 | Leaderboards
description: {"references": ["Liu, H., Xie, L., Wu, J., & Yang, G. (2020). Channel-wise subband input for better voice and accompaniment separation on high resolution music. arXiv preprint arXiv:2008.05216."]}
Robust spin fluctuations and $s\pm$ pairing in the heavily electron doped iron-based superconductors
Creators: name: Suzuki, Katsuhiro
name: Usui, Hidetomo
name: Kuroki, Kazuhiko
name: Iimura, Soshi
name: Sato, Yoshiyasu
name: Matsuishi, Satoru
name: Hosono, Hideo
Publisher: name: arXiv
Year: 2013
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We theoretically study the spin fluctuation and superconductivity in La1111 and Sm1111 iron-based superconductors for a wide range of electron doping. When we take into account the band structure variation by electron doping, the hole Fermi surface originating from the $d_{X^2-Y^2}$ orbital turns out to be robust against electron doping, and this gives rise to large spin fluctuations and consequently $s\pm$ pairing even in the heavily doped regime. The stable hole Fermi surface is larger for Sm1111 than for La1111, which can be considered as the origin of the apparent difference in the phase diagram.
description: 4 pages, 4 figures
Ανάλυση του κλάδου τυποποιημένου ελαιόλαδου στην Ελλάδα
Creators: name: Τσιλιγιάννης, Χρήστος
Publisher: name: Πανεπιστήμιο Πειραιώς
Year: 2022
Subjects: subject: Ελαιόλαδο
subject: Ελληνική αγορά
subject: Εμπόριο
subject: Προοπτικές

description: Η Ελλάδα θεωρείται διαχρονικά η τρίτη ισχυρότερη παραγωγική δύναμη ελαιόλαδου στη διεθνή αγορά και ενισχύει διαρκώς το ανταγωνιστικό της πλεονέκτημα εστιάζοντας στην παραγωγή και την πώληση προϊόντων υψηλής ποιότητας ελαιόλαδου. Τα ιδιαίτερα χαρακτηριστικά της γης, συνδυαστικά με τις κλιματολογικές συνθήκες που επικρατούν στον ελλαδικό χώρο έχουν αναδείξει την Ελλάδα σε μία από τις ηγέτιδες δυνάμεις της παγκόσμιας αγοράς του ελαιόλαδου. Δυστυχώς, η ελλιπής οργάνωση, η μη τυποποίηση του, ο κατακερματισμός της γης και η ημι-καθετοποίηση της παραγωγής αποτελούν ανασταλτικούς παράγοντες για την περαιτέρω ανάπτυξη του κλάδου. Οι συγκεκριμένες συνθήκες έχουν ως επακόλουθο την στασιμότητα της ανάπτυξης του κλάδου σε συνδυασμό με την μείωση του μεριδίου αγοράς του σε διεθνές επίπεδο.
Crucial aspects of the initial mass function (II): The inference of total quantities from partial information on a cluster
Creators: name: Cervino, Miguel
name: Romann-Zuniga, Carlos
name: Bayo, Amelia
name: Luridiana, Valentina
name: Sanchez, Nestor
name: Perez, Enrique
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: In a probabilistic framework of the interpretation of the initial mass function (IMF), the IMF cannot be arbitrarily normalized to the total mass, M, or number of stars, N, of the system. Hence, the inference of M and N when partial information about the studied system is available must be revised. (i.e., the contribution to the total quantity cannot be obtained by simple algebraic manipulations of the IMF). We study how to include constraints in the IMF to make inferences about different quantities characterizing stellar systems. It is expected that including any particular piece of information about a system would constrain the range of possible solutions. However, different pieces of information might be irrelevant depending on the quantity to be inferred. In this work we want to characterize the relevance of the priors in the possible inferences. Assuming that the IMF is a probability distribution function, we derive the sampling distributions of M and N of the system constrained to different types of information available. We show that the value of M that would be inferred must be described as a probability distribution Phi[M; m_a, N_a, Phi(N)] that depends on the completeness limit of the data, m_a, the number of stars observed down to this limit, N_a, and the prior hypothesis made on the distribution of the total number of stars in clusters, Phi(N).
description: Accepted by A&A; 9 pages
[Heft 123/4 (2016) der Zeitschrift Gymnasium / Heft 159/2 (2016) der Zeitschrift Rheinisches Museum für Philologie / Heft 144/3 (2016) der Zeitschrift Hermes ...]
Creators: name: Weise, Stefan
Publisher: name: Forum Classicum
Year: 2017

description: [nicht vorhanden / not available]
description: Forum Classicum, Nr. 4 (2016): Forum Classicum
The historical progression from ADL scrutiny to IADL to advanced ADL: assessing functional status in the earliest stages of dementia
Creators: name: Fieo, Robert A.
name: Zahodne, Laura B.
name: Tang, Ming X.
name: Manly, Jennifer J.
name: Cohen, Ron
name: Stern, Yaakov
Publisher: name: Columbia University
Year: 2018
Subjects: Cognition
Dementia
Dementia--Diagnosis

description: Background: Decrements in instrumental activities (IADL) have been observed in the prodromal phase of dementia. Given the long predementia stage in neurodegenerative diseases, it has been proposed that subtle functional changes may precede clinical IADL impairment. Incorporating more challenging advanced ADLs (eg, volunteer work) into the assessment process may increase the sensitivity of functional measures, thus expanding the window for monitoring or interventions. Methods: Longitudinal cohort study was used (follow-ups, 18–24 month), with subjects aged 60 and older (n = 3,635). To elucidate the relationship between cognitive ability and functional status we employed an IADL scale with an extended range (ADL-extended; includes IADL but also more challenging advanced ADLs) that meets item response theory properties of dimensionality, monotonicity, and item hierarchy. Procedures involved (a) a dynamic change model employed to inspect the temporal relationship between ADL-extended and cognitive status and (b) Cox proportional hazards to assess the risk of incident dementia based on ADL-extended scores. Results: Growth curve modeling: baseline ADL-extended was significantly associated with all four cognitive domains investigated. Worse baseline ADL-extended was associated with more rapid declines in speed/executive function, and worse baseline memory was associated with more rapid declines in ADL-extended; a concurrent association was found for language and ADL-extended. Cox model: the risk of dementia was decreased for each additional ADL-extended item endorsed (hazard ratio [HR], 0.85; 95% confidence interval = 0.81–0.90). Conclusions: An increased risk of dementia could be observed in the ADL-extended items, which reflects an area of the functional continuum beyond IADL competencies.
Kai Brodersen/Bernhard Zimmermann (Hgg.), Kleines Lexikon historischer Personen der griechischen Antike / Kai Brodersen/Bernhard Zimmerm)ann (Hg, Kleines Lexikon historischer Personen der römischen Antike. Basisbibliothek Antike
Creators: name: Schmitz, Dietmar
Publisher: name: Forum Classicum
Year: 2017

description: Rezension zu:

Kai Brodersen/Bernhard Zimmermann (Hgg.), Kleines Lexikon historischer Personen der griechischen Antike. Basisbibliothek Antike. Verlag: J.B.Metzler, Stuttgart 2016, 160 S. (ISBN 978-3-476-02703-0);

Kai Brodersen/Bernhard Zimmerm)ann (Hg, Kleines Lexikon historischer Personen der römischen Antike. Basisbibliothek Antike. Verlag: J.B.Metzler, Stuttgart 2016, 160 S. (ISBN 978-3-476-02708-5)
description: Forum Classicum, Nr. 4 (2016): Forum Classicum
Ο ρόλος των πληροφοριακών συστημάτων στη διαχείριση και τη λειτουργία ενός σύγχρονου φαρμακείου
Creators: name: Αγρίδη, Αικατερίνη
Publisher: name: Πανεπιστήμιο Πειραιώς
Year: 2022
Subjects: subject: Πληροφοριακά συστήματα
subject: Φαρμακείο

description: Η τεχνολογία εξελίσσεται με γρήγορους ρυθμούς και επηρεάζει την δραστηριότητα των ανθρώπων σε όλα τα επίπεδα. Ο ψηφιακός μετασχηματισμός αφορά όλους τους κλάδους της οικονομίας και ο φαρμακευτικός κλάδος είναι ένας από αυτούς. Ωστόσο, η εξοικείωση των ατόμων δεν συμβαδίζει με την τεχνολογική ανάπτυξη. Σήμερα ο χώρος του φαρμακείου είναι ένας χώρος που συνδυάζει την παροχή επιστημονικών γνώσεων και την κοινωνική στήριξη των ασθενών, ενώ ταυτόχρονα είναι και μια εμπορική επιχείρηση. Ο φαρμακοποιός – μεταξύ των άλλων – χρειάζεται να είναι ένας αποτελεσματικός μάνατζερ. Στο πλαίσιο αυτό, η τεχνολογία και ο ψηφιακός μετασχηματισμός μπορούν να βοηθήσουν. Σκοπός της παρούσας έρευνας είναι η διερεύνηση του ρόλου των πληροφοριακών συστημάτων στη διαχείριση και λειτουργία ενός σύγχρονου φαρμακείου. Η πρωτογενής έρευνα διενεργήθηκε με τη χρήση ερωτηματολογίου το οποίο αναρτήθηκε στο διαδίκτυο. Συγκεντρώθηκαν 54 κατάλληλα για χρήση ερωτηματολόγια. Ο βαθμός αξιοπιστίας των απαντήσεων ελέγχθηκε και βρέθηκε ιδιαίτερα υψηλός (συντελεστής Conbach Alpha: 81,3%). Οι συμμετέχοντες είναι εξοικειωμένοι και χρησιμοποιούν τις νέες τεχνολογίες, κυρίως στην αναζήτηση πληροφοριών και στα μέσα κοινωνικής δικτύωσης, ενώ δεν είναι ιδιαίτερα εξοικειωμένοι στη χρήση πληροφοριακών συστημάτων όπως τα ERP / CRM. Ωστόσο, τα φαρμακεία δεν αναπτύσσουν προγράμματα loyalty. Επίσης, μόνο το 20% των φαρμακείων του δείγματος διαθέτουν ηλεκτρονικό κατάστημα. Η εκπαίδευση αποτελεί βασική προϋπόθεση αλλά και πρόκληση, ιδιαίτερα για τις παλαιότερες γενιές. Η ανάλυση συσχέτισης μεταξύ των ερωτήσεων που αναφέρονται στη χρήση και τα αποτελέσματα της χρήσης των πληροφοριακών συστημάτων με τις ερωτήσεις που αναφέρονται στη συνολική λειτουργία του φαρμακείου, τη σχέση με τους πελάτες, τη δημιουργία αξίας στους πελάτες και στην ανάπτυξη ανταγωνιστικού πλεονεκτήματος, φανέρωσε ότι υπάρχει στατιστικά σημαντική, θετική συσχέτιση μεταξύ της χρήσης & αποτελεσματικότητας και όλων των υπολοίπων μεταβλητών, σε επίπεδο στατιστικής σημαντικότητας 95%.
Polygenic score for sleep duration. Association with cognition
Creators: name: Tsapanou, Angeliki
name: Gao, Yizhe
name: Stern, Yaakov
name: Barral Rodriguez, Sandra M.
Publisher: name: Columbia University
Year: 2020
Subjects: Cognition
Sleep
Brain--Aging

description: Study objectives: Age-related changes in sleep include a reduction in total sleep time and a greater incidence of sleep disorders, and are also an integral part of neurodegenerations. In the present study, we aimed to: a) identify common genetic variants that may influence self-reported sleep duration, and b) examine the association between the identified genetic variants and performance in different cognitive domains. Methods: A sample of 197 cognitively healthy participants, aged 20–80 years, mostly non-Hispanic Whites (69%), were selected from the Reference Abilities Neural Network and the Cognitive Reserve study. Each participant underwent an evaluation of sleep function and assessment of neuropsychological performance on global cognition and four different domains (memory, speed of processing, fluid reasoning, language). Published GWAS summary statistics from a Polygenic Score (PS) for sleep duration in a large European ancestry cohort (N = 30,251) were used to derive a PS in our study sample. Multivariate linear models were used to test the associations between the PS and sleep duration and cognitive performance. Age, sex, and education were used as covariates. Secondary analyses were conducted in three age-groups (young, middle, old). Results: Higher PS was linked to longer sleep duration and was also associated with better performance in global cognition, fluid reasoning, speed of processing, and language, but not memory. Results especially for fluid reasoning, language, and global cognition were driven mostly by the young group. Conclusions: Our study replicated the previously reported association between sleep-PS and longer sleep duration. We additionally found a significant association between the sleep-PS and cognitive function. Our results suggest that common genetic variants may influence the link between sleep duration and cognitive health.
Personality‐cognition associations across the adult life span and potential moderators: Results from two cohorts
Creators: name: Simon, Sharon Sanz
name: Lee, Seonjoo
name: Stern, Yaakov
Publisher: name: Columbia University
Year: 2020
Subjects: Cognition
Brain--Aging
Personality
Gender identity

description: Objective: Personality and cognitive abilities have been previously linked. However, there are inconsistencies regarding whether this relationship varies as a function of age, and a lack of evidence on whether gender contributes to this relation, particularly across the adulthood. Therefore, this study investigated the association between personality and cognition across the adult life span, accounting for age and gender. Methods: We examined the association between personality and cognition in two large samples (Sample 1: N = 422; Sample 2: N = 549) including young, middle‐aged and older adults. Participants completed personality scales and several cognitive measures related to reasoning, language, memory and speed of processing. Structural equation modeling was applied in order to investigate associations between personality and cognition, and moderation of age and gender within this relationship. We also conducted a mini‐meta‐analysis procedure in order to examine personality‐cognition associations, combining results from the two samples. Results: Openness was the main trait associated with cognitive performance; however, Extraversion, Conscientiousness, and Neuroticism were also independently associated with cognition. Age and gender did not consistently moderate personality‐cognition in each sample, but the mini‐metanalysis showed that gender moderated Conscientiousness‐cognition associations. Conclusions: We provided robust evidence of personality‐cognition associations across the adult life span, which was not consistently moderated by age, but in part by gender.
Conserved Charge Fluctuations and Susceptibilities in Strongly Interacting Matter
Creators: name: Shi, Shuzhe
name: Liao, Jinfeng
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Theory (hep-th)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We study the conserved charge fluctuations, as quantified by the corresponding susceptibilities, in strongly interacting matter as motived by the quark-gluon plasma. Using the gauge-gravity correspondence approach, we study the patterns of conserved charge fluctuations in two types of holographic models for QCD, the D4/D8 and the D3/D7 models. We compute and compare the quark number susceptibilities in both models and find an interesting common feature of the two: at very strong coupling higher order susceptibilities are suppressed and the conserved charge fluctuations become purely Guassian. In light of the state-of-the-art lattice QCD results we also discuss what we can learn from these susceptibilities about the underlying degrees of freedom in the $1\sim 2T_c$ quark-gluon plasma and examine the viability of different ideas such as holography, quasi-particles, as well as bound states. From analyzes of second order susceptibilities we conclude that the bound states exist and are important in the $1\sim 2T_c$ region. We further construct and make predictions for several ratios of fourth-order susceptibilities that can sensitively reveal such bound states.
description: 24 pages, 12 figures, new references included
Διερεύνηση των επιπτώσεων της κλιματικής αλλαγής σε επιλεγμένες χώρες
Creators: name: Παππά, Καλλιόπη
Publisher: name: Πανεπιστήμιο Πειραιώς
Year: 2022
Subjects: subject: Κλίμα
subject: Κλιματική αλλαγή
subject: Ρύποι
subject: Διοξείδιο του άνθρακα
subject: Αποτύπωμα άνθρακα
subject: Θερμοκρασία

description: Το κλίμα της Γης δεν ήταν ποτέ σταθερό και συνεχώς μεταβαλλόταν. Στα τεσσεράμισι δισεκατομμύρια χρόνια της ζωής της γης το κλίμα έχει μεταβληθεί πολλές φορές καθώς οι παράμετροι που το επηρεάζουν έχουν υποστεί σημαντικές διακυμάνσεις. Όμως σήμερα όταν γίνεται αναφορά στην κλιματική αλλαγή, δεν εννοείται η μεταβολή του κλίματος από φυσικούς παράγοντες όπως συνέβαινε στο παρελθόν αλλά οι αλλαγές που παρατηρούνται στο κλίμα από την ανθρώπινη παρέμβαση στο φυσικό περιβάλλον. Η παγκόσμια άνοδος της θερμοκρασίας της ατμόσφαιρας και των θαλασσών, η άνοδος της στάθμης της θάλασσας και το λιώσιμο των πάγων αποτελούν ατράνταχτες αποδείξεις της κλιματικής αλλαγής. Η επιδείνωση της κλιματικής αλλαγής επιβαρύνει διαφορετικά κάθε χώρα του πλανήτη και οι δυσμενείς επιπτώσεις επηρεάζουν την σύνθεση, την ανθεκτικότητα ή την παραγωγικότητα των οικοσυστημάτων αλλά και την λειτουργία των κοινωνικοοικονομικών παραγόντων για την ανθρώπινη υγεία και ευημερία. Η παρούσα εργασία εξετάζει το φαινόμενο της κλιματικής και τις παγκόσμιες επιπτώσεις που παρουσιάζονται στην αγροτική γη. Συγκεκριμένα, εξετάζει τον τρόπο με τον οποίο οι παγκόσμιες εκπομπές ρύπων διοξειδίου του άνθρακα επηρεάζουν την έκταση της αγροτικής γης σε διάφορες περιοχές σε όλο τον πλανήτη. Για την ολοκλήρωση της στατιστικής ανάλυσης των δεδομένων χρησιμοποιήθηκε το λογισμικό IBM SPSS STATISTICS. Το αξιοποιούμενο υλικό της παρούσας εργασίας πηγάζει από επιστημονικά άρθρα, από σχετικής θεματολογίας συγγράμματα και από τις επίσημες ιστοσελίδες.
О ПРИОРИТЕТАХ РАЗВИТИЯ СТРАТЕГИИ ИССЛЕДОВАНИЙ ЗАСУШЛИВЫХ ЗЕМЕЛЬ МИРА
Creators: name: МАГОМЕДОВ Р.А.
name: КОТЕНКО М.Е.
name: ГРИНЧЕНКО О.С.
name: МАМАЕВ С.А.
name: ЗАЛИБЕКОВ З.Г.
Publisher: name: Аридные экосистемы
Year: 2020
Subjects: ДЕГРАДАЦИЯ ПОЧВ
НОВЫЙ ЭТАП
СТРАТЕГИЯ ИССЛЕДОВАНИЙ
УСТОЙЧИВОЕ РАЗВИТИЕ
СОЦИАЛЬНО-ЭКОНОМИЧЕСКИЕ ПРИОРИТЕТЫ
«ЗЕЛЕНАЯ ЭКОНОМИКА»
ПЕРЕСМОТР КОНЦЕПЦИИ
ОПУСТЫНИВАНИЕ
ИЗМЕНЕНИЕ КЛИМАТА
LAND DEGRADATION
NEW STAGE
RESEARCH STRATEGIES
STABLE DEVELOPMENT
SOCIAL-ECONOMIC PRIORITIES
GREEN ECONOMY
CONCEPTION REVISION
DESERTIFICATION
CLIMATE CHANGE

description: Оценка мирового состояния опустынивания подчеркивает необходимость информации, характеризующей глобальное движение аридной деградации и ущерба, который она наносит. В условиях климатического потепления, которое отмечается в настоящее время, все новые регионы будут подвергаться засухе, ослабляя устойчивость деградируемых земель. Вместе с тем в засушливых регионах с большой интенсивностью увеличивается частота засухи. Прилагаемые усилия ученых и практиков, результаты которых отражены в журнале «Аридные экосистемы» за истекший 25-летний период, позволили получить итоговую информацию о закономерностях деградации почв растительности и животного мира. Опираясь на достижения науки по проблеме антропогенной динамики процессов опустынивания и формирования ресурсоведческого потенциала отдельных компонентов аридных экосистем, необходимо сделать обоснованный подход к стратегии и обозначить методы реализации представленных концепций, программ, проектов. Обобщения теоретических положений восстановления продуктивности, устойчивости почвенного покрова позволили представить фундаментальную разработку исследования засушливых земель мира в виде самостоятельной концепции «зеленой экономики». Ее главным отличием является дифференциация действий человеческого фактора на блоки: природного и медико-биологического. Неотъемлемой частью второго блока является оценка влияния социального положения людей, проживающих в условиях усиления засухи, суховеев и климатического потепления.
Sleep and the aging brain. A multifaceted approach
Creators: name: Tsapanou, Angeliki
name: Scarmeas, Nikolaos
name: Stern, Yaakov
Publisher: name: Columbia University
Year: 2020
Subjects: Sleep
Cognition
Brain--Aging
Dementia

description: In the current review we provide a theoretical background on studies examining the association between sleep and brain function. We focus on the association between sleep and cognitive performance, cognitive changes over time and incident dementia as well. We then present some data on the link between sleep and subjective cognitive complaints, in participants without any objective clinical cognitive decline. We conclude with investigating the association between sleep and brain biomarkers, by highlighting the importance of specific genes and specific brain regions' morphometry. The role of sleep is vital in maintaining a healthy aging brain, and multiple factors should be taken under account when investigating this association.
Das Capsien-Problem im westlichen Mittelmeergebiet
Creators: name: Obermaier, Hugo
Publisher: name: Germania : Anzeiger der Römisch-Germanischen Kommission des Deutschen Archäologischen Instituts
Year: 2017

description: [nicht erschienen / not available]
description: Germania : Anzeiger der Römisch-Germanischen Kommission des Deutschen Archäologischen Instituts, Bd. 18, Nr. 3 (1934)
Non-monotonic residual entropy in diluted spin ice: a comparison between Monte Carlo simulations of diluted dipolar spin ice models and experimental results
Creators: name: Lin, T.
name: Ke, X.
name: Thesberg, M.
name: Schiffer, P.
name: Melko, R. G.
name: Gingras, M. J. P.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Spin ice materials, such as Dy2Ti2O7 and Ho2Ti2O7, have been the subject of much interest for over the past fifteen years. Their low temperature strongly correlated state can be mapped onto the proton disordered state of common water ice and, consequently, spin ices display the same low temperature residual Pauling entropy as water ice. Interestingly, it was found in a previous study [X. Ke {\it et. al.} Phys. Rev. Lett. {\bf 99}, 137203 (2007)] that, upon dilution of the magnetic rare-earth ions (Dy^{3+} and Ho^{3+}) by non-magnetic Yttrium (Y^{3+}) ions, the residual entropy depends {\it non-monotonically} on the concentration of Y^{3+} ions. In the present work, we report results from Monte Carlo simulations of site-diluted microscopic dipolar spin ice models (DSIM) that account quantitatively for the experimental specific heat measurements, and thus also for the residual entropy, as a function of dilution, for both Dy2Ti2O7 and Ho2Ti2O7. The main features of the dilution physics displayed by the magnetic specific heat data are quantitatively captured by the diluted DSIM up to, and including, 85% of the magnetic ions diluted (x=1.7). The previously reported departures in the residual entropy between Dy2Ti2O7 versus Ho2Ti2O7, as well as with a site-dilution variant of Pauling's approximation, are thus rationalized through the site-diluted DSIM. For 90% (x=1.8) and 95% (x=1.9) of the magnetic ions diluted, we find a significant discrepancy between the experimental and Monte Carlo specific heat results. We discuss some possible reasons for this disagreement.
description: 10 pages, 4 figures