cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Cosmic Shear from Scalar-Induced Gravitational Waves
Creators: name: Sarkar, Devdeep
name: Serra, Paolo
name: Cooray, Asantha
name: Ichiki, Kiyotomo
name: Baumann, Daniel
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Weak gravitational lensing by foreground density perturbations generates a gradient mode in the shear of background images. In contrast, cosmological tensor perturbations induce a non-zero curl mode associated with image rotations. In this note, we study the lensing signatures of both primordial gravitational waves from inflation and second-order gravitational waves generated from the observed spectrum of primordial density fluctuations. We derive the curl mode for galaxy lensing surveys at redshifts of 1 to 3 and for lensing of the cosmic microwave background (CMB) at a redshift of 1100. We find that the curl mode angular power spectrum associated with secondary tensor modes for galaxy lensing surveys dominates over the corresponding signal generated by primary gravitational waves from inflation. However, both tensor contributions to the shear curl mode spectrum are below the projected noise levels of upcoming galaxy and CMB lensing surveys and therefore are unlikely to be detectable.
description: 5 Pages, 4 Figures, Submitted to PRD
Decentralized Collaborative Inertial Tracking
Creators: name: Diallo, Alpha
name: Garbinato, Benoit
Publisher: name: arXiv
Year: 2024
Subjects: subject: Emerging Technologies (cs.ET)
subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: Networking and Internet Architecture (cs.NI)
subject: Signal Processing (eess.SP)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Although people spend most of their time indoors, outdoor tracking systems, such as the Global Positioning System (GPS), are predominantly used for location-based services. These systems are accurate outdoors, easy to use, and operate autonomously on each mobile device. In contrast, Indoor Tracking Systems~(ITS) lack standardization and are often difficult to operate because they require costly infrastructure. In this paper, we propose an indoor tracking algorithm that uses collected data from inertial sensors embedded in most mobile devices. In this setting, mobile devices autonomously estimate their location, hence removing the burden of deploying and maintaining complex and scattered hardware infrastructure. In addition, these devices collaborate by anonymously exchanging data with other nearby devices, using wireless communication, such as Bluetooth, to correct errors in their location estimates. Our collaborative algorithm relies on low-complexity geometry operations and can be deployed on any recent mobile device with commercial-grade sensors. We evaluate our solution on real-life data collected by different devices. Experimentation with 16 simultaneously moving and collaborating devices shows an average accuracy improvement of 44% compared to the standalone Pedestrian Dead Reckoning algorithm.
description: ACCEPTED FOR PUBLICATION AND PRESENTED IN EAI MOBIQUITOUS 2023
NEMESIS: Exoplanet Transit Survey of Nearby M-Dwarfs in TESS FFIs I
Creators: name: Feliz, Dax L.
name: Plavchan, Peter
name: Bianco, Samantha N.
name: Jimenez, Mary
name: Collins, Kevin I.
name: Alvarado, Bryan Villarreal
name: Stassun, Keivan G.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: In this work, we present the analysis of 33,054 M-dwarf stars located within 100 parsecs in the Transiting Exoplanet Survey Satellite (TESS) Full Frame Images (FFIs) of the observed sectors 1 to 5. We present a new pipeline called NEMESIS which was developed to extract detrended photometry and perform transit searches of single sector data in TESS FFIs. As many M-dwarfs are faint and are not observed with a 2 minute cadence by TESS, FFI transit surveys can give an empirical validation of how many planets are missed by using the 30 minute cadence data. In this work, we detected 183 threshold crossing events and present 29 planet candidates for sectors 1 to 5, 24 of which are new detections. Our sample contains orbital periods ranging from 1.25 to 6.84 days and planetary radii from 1.26 to 5.31 Earth radii. With the addition of our new planet candidate detections along with previous detections observed in sectors 1 to 5, we calculate an integrated occurrence rate of 2.49 +/- 1.58 planets per star for the period range between [1,9] days and planet radius range between [0.5,11] Earth radii. We project an estimated yield of 122 +/- 11 transit detections of nearby M-dwarfs. 23 of our new candidates have Signal to Noise ratios > 7, Transmission Spectroscopy Metrics > 38 and Emission Spectroscopy Metrics > 10. We provide all of our data products for our planet candidates through the Filtergraph data visualization service located at https://filtergraph.com/NEMESIS.
description: 19 pages, 16 figures and 3 tables. Published in The Astronomical Journal
Πολυμερή υδροξυπροπυλομεθυλοκυτταρίνης(HPMC) και προγραμματισμός αποδέσμευσης φαρμάκων από δισκία συνδυασμού με υδρόφοβο συστατικό
Creators: name: Καρύδας, Θεόδωρος Γ.
Publisher: name: Aristotle University of Thessaloniki
Year: 2004
Subjects: Πολυμερή υδροξυπροπυλομεθυλοκυτταρίνης
Διάχυση-διόγκωση-διάβρωση
Διαβρεκτικότητα
Ρόφηση-εκρόφηση
HPMC
Diffusion-swelling-erosion
Wettability
Sorption-desorption

description: Στη μελέτη αυτή εξετάστηκε η επίδραση του μεγέθους τεμαχιδίων και της χημικής υποκατάστασης των διαφορετικών ειδών των πολυμερών της υδροξυπροπυλομεθυλοκυτταρίνης(HPMC) στην προσφόρηση και την κατανομή της υγρασίας. Εξετάστηκε, επίσης, η ύπαρξη σχέσης μεταξύ της ρόφησης και εκρόφησης της υγρασίας και των χαρακτηριστικών συμπίεσης(δισκιοποίηση) μερικών HPMC πολυμερών με διαφορετικό μέγεθος τεμαχιδίων, βαθμό χημικής(μεθοξυ-/υδροξυπροποξυ-) υποκατάστασης και μοριακό μέγεθος(ιξώδες). Τέλος, υπολογίστηκαν οι πιθανές μεταβολές των χαρακτηριστικών της συμπίεσης(δείκτης συμπιεστότητας και παράμετροι εξίσωσης Heckel) κατά τη δισκιοποίηση των HPMC πολυμερών μετά από αποθήκευσή τους σε διαφορεικές σχετικές υγρασίες περιβάλλοντος(%RH). Ακόμα, εξετάστηκε η επίδραση της διαλυτότητας και διαβρεκτικότητας των δραστικών συστατικών, της σύστασης του φορέα της μήτρας(αναλογία μάζας δραστικού/υδρόφιλου/υδρόφοβου συστατικού), του μεγέθους τεμαχιδίων, του βαθμού χημικής υποκατάστασης και του μοριακού μεγέθους των υδρόφιλών HPMC πολυμερών στην αποδέσμευση των δραστικών συστατικών. Επιχειρήθηκε, επίσης, η ανάλυση της διαδοχής των διαδικασιών /μηχανισμών της ενυδάτωσης(διόγκωσης) και διάβρωσης των δισκίων και η συσχέτισή τους με την αποδέσμευση των δραστικών φαρμακευτικών συστατικών, καθώς και η ποσοτική εκτίμηση της σχετικής συνεισφοράς των μηχανισμών διάχυσης του δραστικού συστατικού και της διάβρωσης της μήτρας στην αποδέσμευση
description: In the present work it was considered appropriate to see whether the moisture sorption and distribution is a affected by the particle by the particle size and chemical nature of the different grades of hydroxy propylmethycellolose(HPMC) polymers. Furthermore, evaluation is attempted for the possible alterations in the compaction characteristics, namely the compressibility index and the Heckel parameters during compression of HPMC polymers after their storage of various environmental relative humidities(%RH). Finally, the in-vitro release is investigated for drugs differing in solubility and wettability from matrices comprising hydrophobic emvelop and HPMC polymers as hydrophilic(gel-forming) components. The effect of the radio of drug/hydrophilic/hydrophobic components, as well as, HPMC grade(chemical or methoxy-/hydropropoxy-substitution and molecular size) and particle size on the release are evaluated and elucidated. Particularly, the sequence of hydration(swelling) and matrix erosion mechanisms is examined and correlated to the drug release
Self-assembly of mixed surfactants sodium dodecylsulfate and polyethylene glycol dodecyl ether in aqueous solutions
Creators: name: Teixeira, Juliano F.
name: Quintão, Juliana Silva
name: Oliveira, Kairon M.
name: Teixeira, Alvaro V. N. C.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The thermodynamic behavior of mixed systems containing the anionic surfactant sodium dodecyl sulfate (SDS) and the nonionic surfactant polyethylene glycol dodecyl ether (Brij L4) in aqueous solutions was investigated. Electrical conductivity and interfacial tension measurements were employed to investigate the concentration-dependent properties of these surfactant mixtures. Two main experiments were conducted: i) constant ratio experiment: the overall surfactant concentration was varied while maintaining a fixed ratio between SDS and Brij L4. It was shown that the critical micelle concentration (CMC) determined from electrical conductivity measurements does not indicate the formation of the first mixed micelles as observed using tensiometry, but the point from which the adsorption of counterions by the existing micelles became important. By using the Regular Solution Theory (RST), it was found that the interaction between SDS and Brij L4 is synergistic, driven by dipole-ion interactions of the hydrophilic regions of the two surfactants. ii) Fixed SDS concentration while increase the Brij L4 concentration: the resulting electrical conductivity exhibited non-trivial behavior which complexity arose from simultaneous phenomena of incorporation of free SDS molecules into the micelles as Brij L4 concentration increased, leading to a decrease in electrical conductivity; liberation of some adsorbed counterions from the mixed micelles to the solution, which increases the conductivity and increase of viscosity due to Brij L4 further addition that leads to a sequential decrease in electrical conductivity.
description: 15 pages, 8 figures. Supplementary Information included
In vitro screening of crude extracts and pure metabolites obtained from marine invertebrates for the treatment of breast cancer
Creators: name: Stingl, John
Publisher: name: University of British Columbia
Year: 2008

description: Fifteen samples of crude extracts and pure metabolites obtained from marine invertebrates collected from the offshore waters of British Columbia, Papua New Guinea and Sri Lanka had previously been shown to exert cytotoxic activity in the in vitro L1210 leukemic bioassay. For this thesis, these samples were screened for in vitro cytotoxic activity against the drug-sensitive breast tumor cell lines MCF-7, T-47D, ZR-75-1 and MDA-MB-231; the multidrug-resistant and P-glycoprotein (Pgp)-positive breast tumorcell lines MCF-7 Adr and MDA-A1r; and normal and malignant human breast epithelial cells (HBEC) in primary culture. Eight samples exhibited significant [drug concentration resulting in a 50% decrease in cell growth as compared withcontrols (ED50), < 25 gg/ml] dose-dependent cytotoxicity against the drug-sensitive cell lines; the ED50 values wereas low as 0.004 gg/ml. Five of the 8 samples exhibited significant cytotoxicity against the multidrug-resistant cell lines; the ED50 values were as low as 0.0006 pg/ml. Incubation of the MCF-7 Adr cells with varying concentrations of compounds in the presence of Adriamycin demonstrated that none of the compounds tested appeared to interfere with Pgp function. Results obtained using HBEC in primary culture showed a wide range of chemosensitivities for a given drug against tissue taken from different patients, demonstrating the uniqueness of the response of different individuals to chemotherapy.
Ανάπτυξη μεθόδων επίλυσης εξισώσεων πληθυσμιακών ισοζυγίων: εφαρμογή σε ασυνεχείς και συνεχείς σωματιδιακές διεργασίες
Creators: name: Ρούσσος, Αβραάμ Ι.
Publisher: name: Aristotle University of Thessaloniki
Year: 2004
Subjects: Πληθυσμιακά ισοζύγια
Αριθμητικές μέθοδοι
Πεπερασμένα στοιχεία
Συνεχείς διεργασίες
Ασυνεχείς διεργασίες
Population balanes
Numerical methods
Finite elements
Continuous processes
Batch processes

description: Αντικείμενο της παρούσας διατριβής αποτελεί η ανάπτυξη και εφαρμογή διαφόρων αριθμητικών μεθόδων για την επίλυση της εξίσωσης πληθυσμιακού ισοζυγίου(Ε.Π.Ι.) σε διεργασίες διεσπαρμένων σωματιδίων. Η συμπεριφορά των υπό μελέτη μεθόδων αξιολογείται σε διάφορα προβλήματα με πυρήνωση, συσσωμάτωση και αύξηση μεγέθους σωματιδίων ως προς την ακρίβεια των αποτελεσμάτων, αλλά και ως προς τον απαιτούμενο υπολογιατικό χρόνο για τη σύγκλιση. Η ακρίβεια μιας μεθόδου ελέγχεται με απευθείας σύγκριση των υπολογιζόμενων αριθμητικών κατανομών μεγέθους σωματιδίων και των αντίστοιχων ροπών τους, με διαθέσιμες αναλυτικές λύσεις. Στόχο της μελέτης αποτελεί η αναγνώριση των περιοχών εφαρμοσιμότητας της κάθε μεθόδου, ο προσδιορισμός των πλεονεκτημάτων και περιορισμών που τη χαρακτηρίζουν, αλλά και η διερεύνηση των δυνατοτήτων βελτίωσης της απόδοσή της
description: The present study focuses on the development and application of different numerical methods for the solution of the population balance equation(PBE) in particulate processes. The performance(i.e. accuracy, stability and CPU requirements) of the developed techniques is investigated in various test problems with particle nucleation, aggreation and growth. The accuracy of a method is evaluated through direct comparison of the calculated particle size distributions anf their respective moments with analytical solutions that are available in literature. The scope of this work is to identify the regions of applicability of a method, to reveal its relative advantages and disadvantages as well as to investigate the potential techniques for improving its performance
Cluster structure of EU-15 countries derived from the correlation matrix analysis of macroeconomic index fluctuations
Creators: name: Gligor, M.
name: Ausloos, M.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences

description: The statistical distances between countries, calculated for various moving average time windows, are mapped into the ultrametric subdominant space as in classical Minimal Spanning Tree methods. The Moving Average Minimal Length Path (MAMLP) algorithm allows a decoupling of fluctuations with respect to the mass center of the system from the movement of the mass center itself. A Hamiltonian representation given by a factor graph is used and plays the role of cost function. The present analysis pertains to 11 macroeconomic (ME) indicators, namely the GDP (x1), Final Consumption Expenditure (x2), Gross Capital Formation (x3), Net Exports (x4), Consumer Price Index (y1), Rates of Interest of the Central Banks (y2), Labour Force (z1), Unemployment (z2), GDP/hour worked (z3), GDP/capita (w1) and Gini coefficient (w2). The target group of countries is composed of 15 EU countries, data taken between 1995 and 2004. By two different methods (the Bipartite Factor Graph Analysis and the Correlation Matrix Eigensystem Analysis) it is found that the strongly correlated countries with respect to the macroeconomic indicators fluctuations can be partitioned into stable clusters.
The Boundary-Spanning Mechanisms of Nobel Prize Winning Papers
Creators: name: Sebastian, Yakub
name: Chen, Chaomei
Publisher: name: arXiv
Year: 2021
Subjects: subject: Digital Libraries (cs.DL)
subject: FOS: Computer and information sciences

description: The breakthrough potentials of research papers can be explained by their boundary-spanning qualities. Here, for the first time, we apply the structural variation analysis (SVA) model and its affiliated metrics to investigate the extent to which such qualities characterize a group of Nobel Prize winning papers. We find that these papers share remarkable boundary-spanning traits, marked by exceptional abilities to connect disparate and topically-diverse clusters of research papers. Further, their publications exert structural variations on the scale that significantly alters the betweenness centrality distributions of existing intellectual space. Overall, SVA not only provides a set of leading indicators for describing future Nobel Prize winning papers, but also broadens our understanding of the similar prize-winning properties that may have been overlooked among other regular publications.
description: 27 pages, 8 figures, 9 tables. Submitted to Frontiers in Research Metrics and Analytics
The Effects of Halo Assembly Bias on Self-Calibration in Galaxy Cluster Surveys
Creators: name: Wu, Hao-Yi
name: Rozo, Eduardo
name: Wechsler, Risa H.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Self-calibration techniques for analyzing galaxy cluster counts utilize the abundance and the clustering amplitude of dark matter halos. These properties simultaneously constrain cosmological parameters and the cluster observable-mass relation. It was recently discovered that the clustering amplitude of halos depends not only on the halo mass, but also on various secondary variables, such as the halo formation time and the concentration; these dependences are collectively termed assembly bias. Applying modified Fisher matrix formalism, we explore whether these secondary variables have a significant impact on the study of dark energy properties using the self-calibration technique in current (SDSS) and the near future (DES, SPT, and LSST) cluster surveys. The impact of the secondary dependence is determined by (1) the scatter in the observable-mass relation and (2) the correlation between observable and secondary variables. We find that for optical surveys, the secondary dependence does not significantly influence an SDSS-like survey; however, it may affect a DES-like survey (given the high scatter currently expected from optical clusters) and an LSST-like survey (even for low scatter values and low correlations). For an SZ survey such as SPT, the impact of secondary dependence is insignificant if the scatter is 20% or lower but can be enhanced by the potential high scatter values introduced by a highly correlated background. Accurate modeling of the assembly bias is necessary for cluster self-calibration in the era of precision cosmology.
description: 13 pages, 5 figures, replaced to match published version
Stable norms of non-orientable surfaces
Creators: name: Balacheff, Florent
name: Massart, Daniel
Publisher: name: arXiv
Year: 2007
Subjects: subject: Differential Geometry (math.DG)
subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: 37J50, 53C20, 53C23

description: We study the stable norm on the first homology of a closed, non-orientable surface equipped with a Riemannian metric. We prove that in every conformal class there exists a metric whose stable norm is polyhedral. Furthermore the stable norm is never strictly convex if the first Betti number of the surface is greater than two.
Investigating the Strategic Nature of Supply Functions in Oligopoly
Creators: name: Delbono, Flavio
name: Lambertini, Luca
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2015
Subjects: SECS-P/01 Economia politica

description: We show that supply functions cannot be classified as either strategic complements or substitutes according to the twofold criterion advanced by Bulow et al. (1985). This is because while the slope of the best reply is univocally positive, this is not the case with the sign of the cross derivative of marginal profit. We first show this discrepancy in the original Klemperer and Meyer (1989) setting, and then in a linear-quadratic model of differentiated duopoly.
We further confirm and strengthen our result by proving that the game in supply functions is neither supermodular nor submodular.
Price equilibrium and willingness to pay in a vertically differentiated mixed duopoly
Creators: name: Benassi, Corrado
name: Castellani, Massimiliano
name: Mussoni, Maurizio
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2015
Subjects: SECS-P/01 Economia politica

description: In the framework of a vertically differentiated mixed duopoly, with uncovered market and costless quality choice, we study the existence of a price equilibrium when a welfare-maximizing public firm producing low quality goods competes against a profit-maximizing private firm producing high quality goods. We show that a price equilibrium exists if the quality spectrum is wide enough vis à vis a measure of the convexity of the distribution of the consumers' willingness to pay, and that such equilibrium is unique if this sufficient condition is tightened. Log-concavity of the income distribution is inconsistent with the existence of equilibrium.
Questions: Childhood and Tribe Life
Creators: name: Girado, Luther
name: Hammond, Jon
name: Hicks, Lucille
name: Grant, Laura
name: Turner, Julie
name: Bohna, Lois Conner
name: Marine, Mandy
name: Tex, Carly
name: Tex, Julie
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2021
Subjects: subject: xaw

description: This file consists of questions and responses from the native speakers regarding childhood and tribe life. Questions asked include: When you were a child, what was your favorite food? Did you use baby baskets? If so, who made them? Describe a typical day at school? Do you have any superstitions or taboos? Tell us about the man who carves logs with a chainsaw in Tehachapi. What did you think about our trip yesterday? Who did you see at Twin Oaks yesterday? Lucille- Tell us about how you lost and found the battery for your phone. Did the tribe have winter or summer homes, or migrate with the seasons? Do you have any stories about Bigfoot? Did you have ceremonies for birth, mourning, and coming of age? Do you still do them? What clans do you have? Were there other tribes and did you get together for celebrations? How did your tribe determine leadership? Do you have Indian names? When did the family leave the ranch at Lorraine? What did you do during the holidays (Christmas, Easter)? Was there a time that you stopped using the language? For how long and why? What do you like most about teaching the language? When you were young did the river ever flood the ranch? How are you feeling today? How was your drive to Laura's house? Did it rain at your house last night? Did you get snow this morning?
L'evoluzione delle politiche culturali in Italia tra centro e periferia con uno sguardo alla Francia (1959-1975)
The evolution of cultural policies in Italy on a national and local level and a nod to France (1959-1975)
Creators: name: Di Giangirolamo, Gianluigi <1979>
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2015
Subjects: M-STO/04 Storia contemporanea

description: L’obiettivo di questo studio è comprendere come si sia evoluto il concetto di bene culturale in Italia nella seconda metà del Novecento. Pertanto si ritiene rilevante l’analisi delle vicende storiche e politiche sulla gestione, valorizzazione e tutela del patrimonio culturale. In particolare si focalizza l’attenzione sullo sviluppo delle politiche pubbliche in Italia tra la fine degli anni Sessanta e la prima metà degli anni Settanta. Un momento che si definisce come un punto cardine del dibattito e delle azioni politiche che prendono avvio, in Italia, nel periodo post-unitario. Passaggi centrali di questo processo si considerano l’istituzione del Ministero per i Beni Culturali e Ambientali e le prime iniziative regionali nel campo della cultura. Ed è proprio nel rapporto tra centro e periferia che emerge una nuova attenzione ai beni culturali e all’elaborazione di politiche in questo campo. Al fine di uno sguardo europeo, nell’evoluzione delle politiche culturali, si considera peculiare il caso francese, con la creazione del Ministero degli Affari Culturali, alla fine degli anni Cinquanta.
description: The aim of this study is to understand how the concept of cultural heritage in Italy developed during the second half of the Twentieth Century. Therefore the analysis of historical and political events on the management, development and protection of cultural heritage is considered relevant. The attention is focused especially on the development of public policies in Italy between the late Sixties and the first half of the Seventies. This period can be defined as a summit of the debate and policies that in Italy began, after the Unification. The establishment of the Ministry of Cultural Heritage and the first regional initiatives in the field of culture, are the central passages of this process. In this way, in the relationship between national and local organization appears a new attention to the development of cultural policies. Finally, for a European look in the evolution of cultural policies  the case of France is considered peculiar for the creation of the Ministry of Cultural Affairs, in the late Fifties.
Σύνθεση και μελέτη συμπυκνωμένων αζα-και διαζα-κυκλοαλκανο[b]ινδολίων και πολυκυκλικών παραγώγων της 1,2,3,4-τετραϋδρο-β-καρβολίνη
Creators: name: Βλάχου, Χριστίνα Π.
Publisher: name: Aristotle University of Thessaloniki
Year: 2004

description: Σκοπός της παρούσας διδακτορικής διατριβής είναι η σύνθεση και μελέτη τετρα- και πεντακυκλικών β-καρβολινικών παραγώγων, καθώς και συμπυκνωμένων αζα-και διαζα-κυκλοαλκανο[b]ινδολίων. Περιγράφεται μια επιτυχής συνθετική πορεία προς πεντακυκλικά ινδολο[2,3-a] κινολιζινικά. Η μεθοδολογία περιλαμβάνει ενδομοριακές αντιδράσειςκυκλοποίησης με ενδιάμεσο σχηματισμό Ν-ακυλο-ιμινιακών ιόντων. Επίσης περιγράφεται η συνθετική πορεία προς διενυνο-β-καρβολινικά παράγωγα, τα οποία χρησιμοποιούνται ως υποστρώματα σε ενδομοριακές αντιδράσεις ολεφινικής μετάθεσης καταλυόμενες από καταλύτες του Ru. Με θρυπταμίνη ως πρώτη ύλη συντίθενται συμπυκνωμένα αλακυκλοοκτανο και γεφυρωμένα αζα-κυκλοεννεανο[5,4-b] ινδόλια. Εξαϋδρο-1,3-διαλοκινο[5,6-b]ινδόλια συντίθενται μέσω αντιδράσεων κυκλοποίησης κατάλληλων ινδολικών παραγώγων με ενδιάμεσο σχηματισμό Ν-ακυλο-ιμινιακών ιόντων
description: The present thesis is concerned with the synthesis and study of the structure of certain tetra- abd pentacyclic b-carboline ring systems, as well as fused aza-and diaza-cycloalkano[b]indole derivatives. An effective route to pentacyclic indole[2,3-a]quinolizine ring systems is described, which involves N-acyliminium ion cyclization reactions. The synthetic route to certain dienyne-b-carboline derivatives is described. These compounds are used as substrates in intramolecular tandem Ru-catalyzed olefin metathesis reactions. Fused azacyclooctan and bridged aza-cyclononane[5,4-b]indole derivatives are synthesized, using tryptamine as starting material. N-acyliminium ion cyclization reactions of certain indole derivatives leads to hexahydro-1,3-diazocino[5,6-b]indoles
Inverse Scattering Problem for Vector Fields and the Cauchy Problem for the Heavenly Equation
Creators: name: Manakov, S. V.
name: Santini, P. M.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: We solve the inverse scattering problem for multidimensional vector fields and we use this result to construct the formal solution of the Cauchy problem for the second heavenly equation of Plebanski, a scalar nonlinear partial differential equation in four dimensions relevant in General Relativity, which arises from the commutation of multidimensional Hamiltonian vector fields.
description: 15 pages, submitted to Phisics Letters A. This paper replaces nlin.SI/0512043
Ανάπτυξη βιοαποικοδομήσιμων πολυμερών και νέων σύνθετων υλικών
Creators: name: Τσέρκη, Βαρβάρα Θ.
Publisher: name: Aristotle University of Thessaloniki
Year: 2004
Subjects: Αλειφατικοί πολυεστέρες
Λιγνινοκυτταρινικές πρώτες ύλες
Aliphatic polyesters
Lignocellulosic materials

description: Σκοπός της παρούσας διατριβής ήταν η ανάπτυξη πλήρης βιοποικοδομήσιμων πολυμερών και στη συνέχεια σύνθετων υλικών, τα οποία προκύπτουν κατά την ενσωμάτωση λιγνινοκυτταρινικών πρώτων υλών σε βιοαποικοδομήσιμη πολυμερική μήτρα. Πραγματοποιήθηκε σύνθεση και χαρακτηρισμός βιοαποικοδομήσιμων πολυεστέρων από βουτανοδιόλη 1,4 και ηλεκτρικό και αδιπικό διμεθυλεστέρα. Στόχος ήταν η συσχέτιση της σύστασης των πολυεστέρων με τις αντίστοιχες θερμικές και μηχανικές τους ιδιότητες, όπως επίσης και με τη βιοαποικοδομησιμότητα τους. Για την παρασκευή των σύνθετων υλικών χρησιμοποιήθηκαν τρία παραπροϊόντα βιομηχανιών σε μορφή μικροσωματιδίων και τρεις λιγνινοκυτταρικές ίνες. Με στόχο την αντιμετώπιση του προβλήματος της μη συμβατότητας μεταξύ των δυο συστατικών, πραγματοποιήθηκε σύνθεση και χαρακτηρισμός συμβατοποιητών, όπως επίσης και τροποποίηση και χαρακτηρισμός των πρώτων υλών με οξικό και προπιονικό ανυδρίτη. Ακολούθησε μελέτη της επίδρασης της τροποποίησης των ινών στη διεπιφάνεια ίνας/πολυμερούς με εφαρμογή της δοκιμής θραυσματοποίησης απλής ίνας και τέλος παρασκευή και χαρακτηρισμός σύνθετων υλικών με χρήση τροποποιημένων και μη προσθέτων και ινών και με προσθήκη συμβατοποιητή
description: The scope of the present study was the development of biodegradable polyesters and composite materials with the incorporation of lignocellulosic fibers et series of aliphatic homopolyesters and copolyesters was prepared from 1,4 butanediol and dimethylesters succunic and adipic acids through a two-step process of transesterification and polycondensation. In order to produce polyesters with high molecular weight 1,6, hexamethylene diiscyonote was used as chain extender. In order to improve the interface between polymer and lignocellulosic materials, maleic anhydride-grafted polyester was synthesized as a compotibilizer and characterized. The chemical modification of lignocellulosic materials with acetic and propionic anhydride, was also studied, as an alternative method in order to improve the compatibility with the matrix. Finally the production and characterization of cost effective and tottaly biodegradable aliphetic polyester/lignocellulosic composites was achieved. The effect of the compatibilizer and the surface treatments of the lignocellulosic materials on the mechanical properties, hydrophilicity and biodegredation of the composites were investigated
Η επίδραση των αθλητικών χρησμών του Μαντείου των Δελφών στην εδραίωση και ανάπτυξη των αρχαίων ολυμπιακών αγώνων: (συνεπικουρία των αλλων μαντείων)
Creators: name: Γιαννάκη, Σωτηρία Θ.
Publisher: name: Aristotle University of Thessaloniki
Year: 2003

description: Ο άνθρωπος αναζητά απαντήσεις στα αιώνια και αγωνιώδη ερωτήματά του, πως θα αποφύγει τα γηρατειά, το θάνατο και πως θα προσεγγίσει το μεταφυσικό, καταφεύγοντας στην πρόνοια του Θεού. Συμβουλεύεται λοιπόν τους εκπροσώπους του Θεού(Πυθία, μάντεις), που μέσω της μαντικής κατευνάζουν την αγωνία του. Ολα, σχεδόν, τα αγωνιστικά κέντρα βρίσκονταν μέσα σε ιερά και μαντεία, με πρώτους θεατές τους ίδιους τους Θεούς. Τα μαντεία συμβούλευαν, για τον εξευμενισμό της οργής της θεότητας, να οργανώνονται γυμνικοί και ιππικοί αγώνες. Παράλληλα, σφυρηλατείτο το πνεύμα ομόνοιας και ενότητας του ελληνικού στοιχείου, δια της ιδρύσεως αγώνων. Ετσι, τα αγαθά της θεϊκής διάθεσης, αγώνας, άσκηση, μουσική, απόκτησαν ιερή ταυτότητα, ενώ παράλληλα ιεροποιήθηκε και θεοποιήθηκε το αποτέλεσμα της αγωνιστικής εκδήλωσης, η Νίκη καθώς και το βραβείο των αθλητών. Πρωταγωνιστικό ρόλο στις αγωνιστικές εκδηλώσεις με ιερό χαρακτήρα προς τιμή των Θεών, διαδραμάτισε το Μαντείο των Δελφών, εισάγοντας μια γιγαντιαία νέα κοσμοθεωρία, την Εκεχερία. Η λειτουργία του Μαντείου των Δελφών τον 9ο π.Χ. αιώνα, επισφραγίζεται με την αναστολή των Ολυμπιακών Αγώνων και η παρακμή αυτούη(362 μ.Χ.) συμπίπτει με την κατάργηση των Ολυμπιακών Αγώνων το 393 μ.Χ.. Η παράλληλη ιστορική πορεία του Μαντείου των Δελφών και της λειτουργίας των Αρχαίων Ολυμπιακών Αγώνων, δηλώνει ότι η θρησκεία εγκόλπωσε και στήριξε το φαινόμενο των Αρχαίων Ολυμπιακών Αγώνων
description: Man, in the pursuit of answers to his perpetual and agonizing questions concerning the old age, death and the metaphysical, he turns to the divine providence. Thus, he consults the representatives of God(Pythia, oracles), who can appease his agonies through foretelling. Almost all athletic centers of ancient Greece were located inside temples and oracles, with gods being the first spectators; oracles advised the organisation of nude and equestrian games in order to propitiate gods' wrath. At the same time the introduction of games formed a spirit of peace and unity among Greeks. Game, exercise and music became goods of gods' desire and obtained a holly identity. The results of athletic competition, Victory and the prize of the athletes were also sacred and deified. The Oracle of Delphi played a leading role to the athletic events in honour of the gods, introducing Truce, a great new ideology. The operation of Delphi Oracle at 9th century B.C. is corroborated with the rise of Olympic Games, and its decline (362 A.C.) coincides with the abolition of the Olympic Games in 393 A.C. The parallel historicall course of Delphi Oracle with the operation of the ancient Olympic Games denotes that religion had adopted and supported the phenomenon of Ancient Olympic Games
Extraction of a second power-law tail of the density distribution in simulated clouds
Creators: name: Marinkova, L.
name: Veltchev, T.
name: Girichidis, Ph.
name: Donkov, S.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The emergence and development of a power-law tail (PLT) at the high-density end of the observed column-density distribution is thought to be indicative for advanced evolution of star-forming molecular clouds. As shown from many numerical simulations, it corresponds to a morphologically analogous evolution of the mass-density distribution (\rhopdf). The latter may display also a second, shallower PLT at the stage of collapse of the first formed protostellar cores. It is difficult to estimate the parameters of a possible second PLT due to resolution constraints. To address the issue, we extend the method for the extraction of single PLTs from arbitrary density distributions suggested by Veltchev et al.(2019) to detect a second PLT. The technique is elaborated through tests on an analytic \rhopdf{} and applied to a set of hydrodynamical high-resolution simulations of isothermal self-gravitating clouds. In all but one case two PLTs were detected -- the first slope is always steeper and the second one is typically $\partial \ln V /\ln ρ\sim -1$. These results are in a good agreement with numerical and theoretical works and do suggest that the technique extracts correctly double PLTs from smooth PDFs.
description: 9 pages, 4 figures, accepted for publication in AN
Elderberry Jelly (Final)
Creators: name: Girado, Luther
name: Hammond, Jon
name: Hernandez, Betty
name: Grant, Laura
name: Turner, Julie
name: Durham, Kim
name: GrantSmith, Amanda
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2021
Subjects: subject: xaw

description: The finished, edited movie, Making Elderberry jelly in Laura's backyard.
An Ultra-High Time Resolution Cosmic Ray Detection Mode for the Murchison Widefield Array
Creators: name: Williamson, A.
name: James, C. W.
name: Tingay, S. J.
name: McSweeney, S. J.
name: Ord, S. M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: The radio-wavelength detection of extensive air showers (EAS) initiated by cosmic-ray interactions in the Earth's atmosphere is a promising technique for investigating the origin of these particles and the physics of their interactions. The Low Frequency Array (LOFAR) and the Owens Valley Long Wavelength Array (OVRO-LWA) have both demonstrated that the dense cores of low frequency radio telescope arrays yield detailed information on the radiation ground pattern, which can be used to reconstruct key EAS properties and infer the primary cosmic-ray composition. Here, we demonstrate a new observation mode of the Murchison Widefield Array (MWA), tailored to the observation of the sub-microsecond coherent bursts of radiation produced by EAS. We first show how an aggregate 30.72 MHz bandwidth (3072x 10 kHz frequency channels) recorded at 0.1 ms resolution with the MWA's voltage capture system (VCS) can be synthesised back to the full bandwidth Nyquist resolution of 16.3 ns. This process, which involves `inverting' two sets of polyphase filterbanks, retains 90.5% of the signal-to-noise of a cosmic ray signal. We then demonstrate the timing and positional accuracy of this mode by resolving the location of a calibrator pulse to within 5 m. Finally, preliminary observations show that the rate of nanosecond radio-frequency interference (RFI) events is 0.1 Hz, much lower than that found at the sites of other radio telescopes that study cosmic rays. We conclude that the identification of cosmic rays at the MWA, and hence with the low-frequency component of the Square Kilometre Array, is feasible with minimal loss of efficiency due to RFI.
description: 9 pages, 8 figures. To be published in the Journal of Astronomical Instrumentation
ESTUDO DA RESPOSTA DA CULTURA DA VINHA À APLICAÇÃO DE DOIS PRODUTOS COMPOSTADOS À BASE DE RSU’S E LAMAS DE ETAR
Creators: name: Ferreira, Mafalda
name: Marques, António
Publisher: name: Revista UIIPS
Year: 2019

description: A preocupação com o aumento da produção de subprodutos orgânicos em diversas atividades humanas tem levado ao aproveitamento e utilização desses materiais na agricultura. O objetivo deste trabalho foi avaliar o efeito da aplicação de doses crescentes de dois produtos compostados à base de RSU’s (A) e lamas de ETAR (B) na produção da cultura da vinha. O ensaio foi realizado nos anos de 2015 a 2017 na Escola Superior Agrária de Santarém, Quinta do Quinto. O delineamento experimental utilizado foi o de blocos casualizados, com quatro tratamentos (0; 12,5.t ha-1; 25 t ha-1; 37,5 t ha-1) e quatro repetições. A produção foi avaliada a partir do peso dos cachos de uvas. A aplicação da dose de 37,5 t ha-1, conduziu a aumentos de produção de 7654 kg ha-1 (produto A) e de 9803 kg ha-1 (produto B), correspondendo respetivamente a incrementos de 204 kg e de 261 kg de uvas por tonelada de produto aplicado. A produção foi maior em 2015 e menor em 2017, justificando-se essa diferença pela variação das condições climáticas entre anos.
description: Revista UIIPS, Vol 7 No 1 (2019): International Congress of the IPSantarém Research Unit - Part I
Dictionary between scattering matrix and Keldysh formalisms for quantum transport driven by time-periodic fields
Creators: name: Arrachea, Liliana
name: Moskalets, Michael
Publisher: name: arXiv
Year: 2006
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We present the relation between the Floquet scattering matrix and the non-equilibrium Green's function formalisms to transport theory in noninteracting electronic systems in contact to reservoirs and driven by time-periodic fields. We present a translation formula that expresses the Floquet scattering matrix in terms of a Fourier transform of the retarded Green's function. We prove that such representation satisfies the fundamental identities of tran sport theory. We also present the ``adiabatic'' approximation to the dc-current in the language of the Keldysh formalism.
description: 15 pages
Kerala under Haidar Ali and Tipu Sultan
Creators: name: Kareem, C. K. Abdul
Publisher: name: Zenodo
Year: 2021

description: Kareem, C. K. Kerala Under Haidar Ali and Tipu Sultan. PhD Aligarh Muslim University, 1968 Haidar Ali, -- Nawab of Mysore, -- approximately 1722-1782. Tipu Sultan, Fath ʻAli, -- Nawab of Mysore, -- 1753-1799. Kerala (India) -- History.
description: Subsequently published Kareem, C. K. Kerala Under Haidar Ali and Tipu Sultan. Ernakulam: Kerala History Association, 1973.
How does the Polar Dust affect the Correlation between Dust Covering Factor and Eddington Ratio in Type 1 Quasars Selected from the Sloan Digital Sky Survey Data Release 16?
Creators: name: Toba, Yoshiki
name: Ueda, Yoshihiro
name: Gandhi, Poshak
name: Ricci, Claudio
name: Burgarella, Denis
name: Buat, Veronique
name: Nagao, Tohru
name: Oyabu, Shinki
name: Matsuhara, Hideo
name: Hsieh, Bau-Ching
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We revisit the dependence of covering factor (CF) of dust torus on physical properties of active galactic nuclei (AGNs) by taking into account an AGN polar dust emission. The CF is converted from a ratio of infrared (IR) luminosity contributed from AGN dust torus ($L_{\rm IR}^{\rm torus}$) and AGN bolometric luminosity ($L_{\rm bol}$), by assuming a non-linear relation between luminosity ratio and intrinsic CF. We select 37,181 type 1 quasars at $z < 0.7$ from the Sloan Digital Sky Survey Data Release 16 quasar catalog. Their $L_{\rm bol}$, black hole mass ($M_{\rm BH}$), and Eddington ratio ($λ_{\rm Edd}$) are derived by spectral fitting with QSFit. We conduct spectral energy distribution decomposition by using X-CIGALE with clumpy torus and polar dust model to estimate $L_{\rm IR}^{\rm torus}$ without being affected by the contribution of stellar and AGN polar dust to IR emission. For 5720 quasars whose physical quantities are securely determined, we perform a correlation analysis on CF and (i) $L_{\rm bol}$, (ii) $M_{\rm BH}$, and (iii) $λ_{\rm Edd}$. As a result, anti-correlations for CF-$L_{\rm bol}$, CF-$M_{\rm BH}$, and CF-$λ_{\rm Edd}$ are confirmed. We find that incorporating the AGN polar dust emission makes those anti-correlations stronger which are compared to those without considering it. This indicates that polar dust wind provably driven by AGN radiative pressure is one of the key components to regulate obscuring material of AGNs.
description: 20 pages, 14 figures, and 4 tables, accepted for publication in ApJ. Physical properties (e.g., BH mass, Eddington ratio, IR luminosity) of 37,181 quasars at z < 0.7 selected from the SDSS DR16 will be available as a Machine-readable table
Working for tips in restaurants: problematic aspects of the achievement principle
Creators: name: Tavares, Tony
Publisher: name: University of British Columbia
Year: 2008

description: In capitalist economies, wages are rationalized by the achievement principle. Managers do the assessing. In restaurants, tips are the main reward of a server's performance. Customers do the assessing. In both cases, there are problematic assumptions that there can be just and ascriptive-free criteria for assessing performance or "capable" authorities for those assessments. Tipping makes those assumptions even more problematic because of the transfer of the assessing authority to the customer.
Motivation and involvement in learning english for academic purposes
Creators: name: Κανταρίδου, Ζωή Κ.
Publisher: name: Aristotle University of Thessaloniki
Year: 2004

description: Η παρούσα εργασία ερευνά το θέμα των κινήτρων στην εκμάθηση της αγγλικής για ακαδημαϊκούς σκοπούς στο πανεπιστήμιο. Συγκεκριμένα, ερευνά την επίδραση του προγράμματος σπουδών, του αγγλικού επιπέδου των φοιτητών και της εμπλοκής στη μάθηση πάνω στα κίνητρα των φοιτητών, στη χρήση στρατηγικών και στην επίδοση στην αγγλική για ακαδημαϊκούς σκοπούς. Τα αποτελέσματα έδειξαν ότι τα κίνητρα προσωπικότητας δεν επηρεάζονται από το πρόγραμμα σπουδών. Αντίθετα, η εμπλοκή των φοιτητών στη μάθηση επηρεάζει σημαντικά τα κίνητρα των φοιτητών για το συγκεκριμένο μάθημα. Συνεπώς η διδασκαλία της αγγλικής για ακαδημαϊκούς σκοπούς πρέπει να παρέχει το πλαίσιο που θα στηρίξει τον περιορισμένο σ'αυτήν την ηλικία εσωτερικό αυτο-έλεγχο των φοιτητών. Εξωτερικοί κανόνες που διατηρούν την εμπλοκή των φοιτητών στη μάθηση μπορούν να τους παρέχουν ικανότητες και δεξιότητες που θα τους διευκολύνουν στη ζωή τους μακροπρόθεσμα
description: The present study seeks to investigate the issue of motivation in the context of EAP syllabus, level of english and involvement in learning on students' motivation, strategy use and performance in EAP. The results indicated that students' trait motivation remains largely unaffected by the EAP syllabus. On the contrary, involvement in learning significantly affects students' state motivation. An important implication for EAP teaching is to provide a framework to support students' limited at this age internal regulation resources. External regulation that maintains students' involvement in learning will equip students with abilities and skills that facilitate their lives in the long run
Doping dependence of thermopower and thermoelectricity in strongly correlated systems
Creators: name: Mukerjee, Subroto
name: Moore, J. E.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The search for semiconductors with high thermoelectric figure of merit has been greatly aided by theoretical modeling of electron and phonon transport, both in bulk materials and in nanocomposites. Recent experiments have studied thermoelectric transport in ``strongly correlated'' materials derived by doping Mott insulators, whose insulating behavior without doping results from electron-electron repulsion, rather than from band structure as in semiconductors. Here a unified theory of electrical and thermal transport in the atomic and ``Heikes'' limit is applied to understand recent transport experiments on sodium cobaltate and other doped Mott insulators at room temperature and above. For optimal electron filling, a broad class of narrow-bandwidth correlated materials are shown to have power factors (the electronic portion of the thermoelectric figure of merit) as high at and above room temperature as in the best semiconductors.
description: 4 pages, 4 figures
Αλγεβρική σημαντική γραφημάτων
Creators: name: Καλαμπάκας, Αντώνιος
Publisher: name: Aristotle University of Thessaloniki
Year: 2004
Subjects: Μαγμοειδές
Αναγνωρισιμότητα
Συντακτική πολυπλοκότητα
Magmoid
Recogizability
Syntax complexity

description: Δίνεται λύση στο πρόβλημα που αφορά στην ύπαρξη και κατασκευή ενός πεπερασμένου συνόλου εξισώσεων τέτοιο ώστε δυο εκφράσεις να παριστάνουν το ίδιο γράφημα αν-ν η μια προκύπτει από την άλλη με χρήση αυτών των εξισώσεων
description: The magmoid of hypergraphs labelled over a finite doubly vanked alphabet is characterized as the quotient of the frel magmoid genertled by this alphabet divided by a finite set of equations. Thus a relevant open problem posed by Εngelfried and Veveijken is being solved