cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Το νοσολογικό μοντέλο της εξάρτησης στην Ελλάδα
Creators: name: Πορταρινού, Αναστασία Μαρία Στέλιου
Publisher: name: Aristotle University of Thessaloniki
Year: 2020
Subjects: νοσολογικό μοντέλο της εξάρτησης
βιοεξουσία
κανονικοποίηση
disease concept of addiction
biopower
normalization

description: Η εργασία αυτή επικεντρώνεται στην ανάδειξη της ιστορικότητας της έννοιας της εξάρτησης από ψυχοτρόπες ουσίες και στον τρόπο με τον οποίο ιστορικές κοινωνικές και πολιτισμικές διαστάσεις αποτυπώνονται επάνω στην ερμηνεία της έννοιας της εξάρτησης και στις θεραπευτικές πρακτικές. Για το σκοπό αυτό, μελετάται αρχικά η εμφάνιση του νοσολογικού μοντέλου της εξάρτησης στα κράτη της Δύσης , καθώς και ο τρόπος εγκαθίδρυσής του. Έπειτα, εξετάζεται η ανάδυση του νοσολογικού μοντέλου στον ελλαδικό χώρο ως αποτέλεσμα παγκόσμιων και εγχώριων οικονομικών μεταβολών, αλλά και μεταβολών στην κοινωνική σκέψη, που σημειώνονται εκείνη την εποχή. Αντλώντας από το έργο του Μισέλ Φουκώ, και τις έννοιες της βιοεξουσίας και της κανονικοποίησης γίνεται μία προσπάθεια ανάδειξης του τρόπου με τον οποίο οι εξαρτημένοι τέθηκαν μεταξύ ποινικού και ιατρικού ελέγχου και πως αυτό συνέβαλε και αποτυπώνεται σήμερα στις πρακτικές διαχείρισης του ζητήματος
description: This thesis focuses on highlighting the historical perspective of the addiction concept and the way in which culturally and historically specific ideas about addiction translate into particular forms of therapy. For this purpose, first, I analyze the emergence of the disease concept of addiction in the West. Then, I will explore the emergence of the disease concept of addiction specifically in Greece as a result of global and domestic socioeconomic changes that are taking place during the 19th and the 20th century. Using Foucault’s concepts of biopower and normalization I will try to examine how addicts were placed between the medical and penal control and how this approach contributed and is reflected nowadays in the establishment of new therapeutic approaches
Flavor separation of the Boer-Mulders function from unpolarized $π^- p$ and $π^- D$ Drell-Yan processes
Creators: name: Lu, Zhun
name: Ma, Bo-Qiang
name: Schmidt, Ivan
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We show that measuring the $\cos 2ϕ$ angular dependence in unpolarized Drell-Yan processes with $π^-$ beams colliding on proton and deuteron targets can determine the ratio of the Boer-Mulders functions for $d$ and $u$ quarks inside the proton $h_1^{\perp,d}/h_1^{\perp,u}$, which is still lack of theoretical constraint. The comparison of the $\cos 2 ϕ$ asymmetries measured in unpolarized $π^- p$ and $π^- D$ Drell-Yan processes, which are accessible at CERN by the COMPASS collaboration, can help to discriminate whether $h_1^\perp$ effects or QCD vacuum effects are preferred by data.
description: 10 pages, 2 figures, published in Physics Letters B
Neutrino As The Dark Force
Creators: name: Orlofsky, Nicholas
name: Zhang, Yue
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We point out a novel role for the Standard Model neutrino in dark matter phenomenology where the exchange of neutrinos generates a long-range potential between dark matter particles. The resulting dark matter self interaction could be sufficiently strong to impact small-scale structure formation, without the need of any dark force carrier. This is a generic feature of theories where dark matter couples to the visible sector through the neutrino portal. It is highly testable with improved decay rate measurements at future $Z$, Higgs, and $τ$ factories, as well as precision cosmology.
description: 6 pages, 2 figures; v2: added Lyman-alpha and references
MATCH: An MPI Fault Tolerance Benchmark Suite
Creators: name: Guo, Luanzheng
name: Georgakoudis, Giorgis
name: Parasyris, Konstantinos
name: Laguna, Ignacio
name: Li, Dong
Publisher: name: arXiv
Year: 2021
Subjects: subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: FOS: Computer and information sciences

description: MPI has been ubiquitously deployed in flagship HPC systems aiming to accelerate distributed scientific applications running on tens of hundreds of processes and compute nodes. Maintaining the correctness and integrity of MPI application execution is critical, especially for safety-critical scientific applications. Therefore, a collection of effective MPI fault tolerance techniques have been proposed to enable MPI application execution to efficiently resume from system failures. However, there is no structured way to study and compare different MPI fault tolerance designs, so to guide the selection and development of efficient MPI fault tolerance techniques for distinct scenarios. To solve this problem, we design, develop, and evaluate a benchmark suite called MATCH to characterize, research, and comprehensively compare different combinations and configurations of MPI fault tolerance designs. Our investigation derives useful findings: (1) Reinit recovery in general performs better than ULFM recovery; (2) Reinit recovery is independent of the scaling size and the input problem size, whereas ULFM recovery is not; (3) Using Reinit recovery with FTI checkpointing is a highly efficient fault tolerance design. MATCH code is available at https://github.com/kakulo/MPI- FT- Bench.
Rheological Study of Transient Networks with Junctions of Limited Multiplicity
Creators: name: Indei, Tsutomu
Publisher: name: arXiv
Year: 2006
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Viscoelastic and thermodynamic properties of transient gels comprised of telechelic polymers are theoretically studied. We extend classical theories of transient networks so that correlations among polymer chains through the network junctions are taken into account. This extension enables us to investigate how rheological quantities, such as viscosity and elastic modulus, are affected by the association equilibrium conditions, and how these quantities are related to the aggregation number of junctions. We present a theoretical model of transient networks with junctions comprised of variable number of hydrophobic groups on the chain ends. Elastically effective chains are defined as the chains whose both ends are associated with end groups on other chains. It is shown that the dynamic shear moduli are well described in terms of the Maxwell model characterized by a single relaxation time and the high-frequency plateau modulus as in the classical theories, but the reduced dynamic shear moduli depend on the polymer concentration and temperature through the reduced concentration c given as a combination of the association constant and the volume fraction of end groups. The plateau modulus and the zero-shear viscosity rise nonlinearly with increasing c when c is small, but they are proportional to c for higher c. The relaxation time also increases as c increases due to the presence of pairwise junctions at small c.
description: 24 pages, 17 figures
Silica based immunoassays for a covalently attached antigen
Creators: name: Melzak, Kathryn
Publisher: name: University of British Columbia
Year: 2008

description: An immunoassay was developed using a monoclonal antibody and anantigen covalently immobilized on silica, showing that silica is a potentially useful assay substrate. Silica beads prepared from tetraethyl orthosilicate (0.78 pmdiameter) and fused quartz slides were thoroughly cleaned and modified with 3-aminopropyltriethoxysilane. Amine groups on the modified slides and beads were used for carbodiimide mediated coupling to carboxyl groups on a peptide antigen. High surface concentrations of antigen were achieved. Antibody binding to the antigen-modified beads and slides was measured using an iodinated monoclonal antibody. The equilibrium constant for the antibody binding on the beads was ten times higher than on the flat silica, but the maximum amount bound was lower. Immunoassays performed using a second enzyme-labelled antibody to detect the monoclonal antibody bound to the silica permitted detection of the antigen at 10-8 M using the modified beads and at10-7 M using the slides.
Superconductivity of incoherent electrons in Yukawa-SYK model
Creators: name: Classen, Laura
name: Chubukov, Andrey
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study a model of $N$ fermions in a quantum dot, coupled to $M$ bosons by a disorder-induced complex Yukawa coupling (Yukawa-SYK model), in order to explore the interplay between non-Fermi liquid and superconductivity in a strongly coupled, (quantum-)critical environment. We analyze the phase diagram of the model for an arbitrary complex interaction and arbitrary ratio of $N/M$, with special focus on the two regimes of non-Fermi-liquid behavior: an SYK-like behavior with a power-law frequency dependence of the fermionic self-energy and an impurity-like behavior with frequency independent self-energy. We show that the crossover between the two. can be reached by varying either the strength of the fermion-boson coupling or the ratio $M/N$. We next argue that in both regimes the system is unstable to superconductivity if the strength of time-reversal-symmetry-breaking disorder is below a certain threshold. We show how the corresponding onset temperatures vary between the two regimes. We argue that the superconducting state is highly unconventional with an infinite set of minima of the condensation energy at $T=0$, corresponding to topologically different gap functions. We discuss in detail similarities and differences between this model and the model of dispersion-full fermions tuned to a metallic quantum-critical point, with an effective singular dynamical interaction $V(Ω) \propto 1/|Ω|^γ$ (the $γ-$model).
description: 17+6 pages, 13+1 figures
Quantum coding theorem from privacy and distinguishability
Creators: name: Horodecki, Michal
name: Lloyd, Seth
name: Winter, Andreas
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We prove direct quantum coding theorem for random quantum codes. The problem is separated into two parts: proof of distinguishability of codewords by receiver, and that of indistinguishability of codewords by environment (privacy). For a large class of codes, only privacy has to be checked.
description: Presented at the NATO ARW "Quantum Communication and Security", 10-13 September 2006, Gdansk, Poland; final version to appear in OSID special issue
Native Learning Styles: Shorthand for Instructional Adaptations?
Creators: name: Sawyer, Don
Publisher: name: Canadian Journal of Native Education
Year: 2021

description: A discussion about Native learning styles in the literature is reviewed, and it is argued that the term is ambiguous, and that several of the studies and propositions about Native learning styles go beyond cognitive and interactional categories to further confuse the issue. Nonetheless, the literature can provide some general indications for teachers, not in defining attributions or characteristics of Native learners, but in suggesting things that teachers might be sensitive to, in order to accommodate to a specific situation.
description: Canadian Journal of Native Education, Vol. 18 No. 1 (1991)
Forecasting Health and Wellbeing for Shift Workers Using Job-role Based Deep Neural Network
Creators: name: Yu, Han
name: Itoh, Asami
name: Sakamoto, Ryota
name: Shimaoka, Motomu
name: Sano, Akane
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Shift workers who are essential contributors to our society, face high risks of poor health and wellbeing. To help with their problems, we collected and analyzed physiological and behavioral wearable sensor data from shift working nurses and doctors, as well as their behavioral questionnaire data and their self-reported daily health and wellbeing labels, including alertness, happiness, energy, health, and stress. We found the similarities and differences between the responses of nurses and doctors. According to the differences in self-reported health and wellbeing labels between nurses and doctors, and the correlations among their labels, we proposed a job-role based multitask and multilabel deep learning model, where we modeled physiological and behavioral data for nurses and doctors simultaneously to predict participants' next day's multidimensional self-reported health and wellbeing status. Our model showed significantly better performances than baseline models and previous state-of-the-art models in the evaluations of binary/3-class classification and regression prediction tasks. We also found features related to heart rate, sleep, and work shift contributed to shift workers' health and wellbeing.
description: In: Wireless Mobile Communication and Healthcare. MobiHealth 2020
New Dipole Penguin Contribution to K --> pi pi decays
Creators: name: Eeg, Jan O.
name: Kumericki, Kresimir
name: Picek, Ivica
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We point out that the standard chromomagnetic penguin dipole operator has a counterpart corresponding to off-shell momenta for external quarks. By employing the chiral quark model, we show that this new dipole penguin operator has the same bosonisation as the standard Q_6 operator. Accordingly, this new operator enlarges by ~ 5 % the referent Q_6 contribution, which gives the dominant contribution to the CP-violating ratio epsilon'/epsilon and also gives an important contribution to the Delta I = 1/2 amplitude.
description: 17 pages, 1 PS figure, LaTeX, corresponds to published version
Calibration of bias and scatter involved in cluster mass measurements using optical weak gravitational lensing
Creators: name: Grandis, Sebastian
name: Bocquet, Sebastian
name: Mohr, Joseph J.
name: Klein, Matthias
name: Dolag, Klaus
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Cosmological inference from cluster number counts is systematically limited by the accuracy of the mass calibration, i.e. the empirical determination of the mapping between cluster selection observables and halo mass. In this work we demonstrate a method to quantitatively determine the bias and uncertainties in weak-lensing mass calibration. To this end, we extract a library of projected matter density profiles from hydrodynamical simulations. Accounting for shear bias and noise, photometric redshift uncertainties, mis-centering, cluster member contamination, cluster morphological diversity, and line-of-sight projections, we produce a library of shear profiles. Fitting a one-parameter model to these profiles, we extract the so-called \emph{weak lensing mass} $M_\text{WL}$. Relating the weak-lensing mass to the halo mass from gravity-only simulations with the same initial conditions as the hydrodynamical simulations allows us to estimate the impact of hydrodynamical effects on cluster number counts experiments. Creating new shear libraries for $\sim$1000 different realizations of the systematics, provides a distribution of the parameters of the weak-lensing to halo mass relation, reflecting their systematic uncertainty. This result can be used as a prior for cosmological inference. We also discuss the impact of the inner fitting radius on the accuracy, and determine the outer fitting radius necessary to exclude the signal from neighboring structures. Our method is currently being applied to different Stage~III lensing surveys, and can easily be extended to Stage~IV lensing surveys.
description: 20 pages, 12 figures, 3 tables, 2 appendices
Grammatical elicitation: Epistemic indefinites and raising
Creators: name: Yegon, Kiplangat
name: Bossi, Madeline
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2022
Subjects: subject: sgc

description: One .mp4 file and one .pdf file. Elicitation of syntactic properties of epistemic indefinites (e.g. possession, co-occurrence with demonstratives). Elicitation of different embedding verbs with raising out of the embedded clause.
Η κοινωνική ταυτότητα των μελών της κοινότητας του ευαγγελιστή Μάρκου
Creators: name: Τριανταφυλλίδου, Μαρία Αννα Ιωάννη
Publisher: name: Aristotle University of Thessaloniki
Year: 2020
Subjects: ευαγγελιστής Μάρκος
ταυτότητα
κοινότητα
evangelist Mark
identity
community

description: Σκοπός της μεταπτυχιακής μελέτης ήταν η έρευνα και η μελέτη της κοινωνικής ταυτότητας των μελών της κοινότητας του ευαγγελιστή Μάρκου. Εξετάσαμε την έννοια της ταυτότητας και τα βασικά χαρακτηριστικά που τη διέπουν καθώς και τις προεκτάσεις της. Στη συνέχεια παρουσιάσαμε αναλυτικά τη διάσταση της θεωρίας της ταυτότητας καθώς και όλες εκείνες τις επιστημονικές θεωρίες πάνω στις οποίες βασίζεται η θεωρία της ταυτότητας. Ακόμη αναφερθήκαμε στα μέλη της κοινότητας του ευαγγελιστή Μάρκου και προσπαθήσαμε να καταλήξουμε σε συμπεράσματα. Ένα άλλο θέμα που μας απασχόλησε ήταν η εφαρμογή της θεωρίας της ταυτότητας πάνω στο ευαγγέλιο του Μάρκου και η θεολογική της προσέγγιση. Ακόμη θίξαμε το κοινωνικό πλαίσιο του ευαγγελίου και προσπαθήσαμε να το εντάξουμε στη χώρο-χρονική μας συνάφεια
description: The aim of postgraduate study was to research the social identity of the members of evangelist Mark’s community. We examined the concept of identity and the main characteristics and its extensions that govern it. Then we presented in detail the dimension of the theory of identity as well as all those scientific theories on which is based the theory of identity. Also we talked about the evangelist Mark’s communities and tried to reach conclusions. Another issue that concerned us was the application of the theory of identity on evangelist Mark and its theological approach. We also touched upon the social context of Marks gospel and tried to integrate the gospel to space-temporal coherence
Threat Actor Type Inference and Characterization within Cyber Threat Intelligence
Creators: name: Mavroeidis, Vasileios
name: Hohimer, Ryan
name: Casey, Tim
name: Jøsang, Audun
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cryptography and Security (cs.CR)
subject: FOS: Computer and information sciences

description: As the cyber threat landscape is constantly becoming increasingly complex and polymorphic, the more critical it becomes to understand the enemy and its modus operandi for anticipatory threat reduction. Even though the cyber security community has developed a certain maturity in describing and sharing technical indicators for informing defense components, we still struggle with non-uniform, unstructured, and ambiguous higher-level information, such as the threat actor context, thereby limiting our ability to correlate with different sources to derive more contextual, accurate, and relevant intelligence. We see the need to overcome this limitation in order to increase our ability to produce and better operationalize cyber threat intelligence. Our research demonstrates how commonly agreed upon controlled vocabularies for characterizing threat actors and their operations can be used to enrich cyber threat intelligence and infer new information at a higher contextual level that is explicable and queryable. In particular, we present an ontological approach to automatically inferring the types of threat actors based on their personas, understanding their nature, and capturing polymorphism and changes in their behavior and characteristics over time. Such an approach not only enables interoperability by providing a structured way and means for sharing highly contextual cyber threat intelligence but also derives new information at machine speed and minimizes cognitive biases that manual classification approaches entail.
Variable VHE gamma-ray emission from Markarian 501
Creators: name: al, J. Albert et
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The blazar Markarian 501 (Mrk 501) was observed at energies above 0.10 TeV with the MAGIC telescope from May through July 2005. The high sensitivity of the instrument enabled the determination of the flux and spectrum of the source on a night-by-night basis. Throughout our observational campaign, the flux from Mrk 501 was found to vary by an order of magnitude. Intra-night flux variability with flux-doubling times down to 2 minutes was observed during the two most active nights, namely June 30 and July 9. These are the fastest flux variations ever observed in Mrk 501. The ~20-minute long flare of July 9 showed an indication of a 4 +/- 1 min time delay between the peaks of F(<0.25 TeV) and F(>1.2 TeV), which may indicate a progressive acceleration of electrons in the emitting plasma blob. The flux variability was quantified for several energy ranges, and found to increase with the energy of the gamma-ray photons. The spectra hardened significantly with increasing flux, and during the two most active nights, a spectral peak was clearly detected at 0.43 +/- 0.06 TeV and 0.25 +/- 0.07 TeV, respectively for June 30 and July 9. There is no evidence of such spectral feature for the other nights at energies down to 0.10 TeV, thus suggesting that the spectral peak is correlated with the source luminosity. These observed characteristics could be accommodated in a Synchrotron-Self-Compton (SSC) framework in which the increase in gamma-ray flux is produced by a freshly injected (high energy) electron population.
description: 51 pages, 28 figures. Published in ApJ. Changes with respect to V2: Corrected few typos in text, add few references and change format of some figures (2,14,16,17,19,21) so that they can be seen more clearly when printed without colors
MOARD: Modeling Application Resilience to Transient Faults on Data Objects
Creators: name: Guo, Luanzheng
name: Li, Dong
Publisher: name: arXiv
Year: 2021
Subjects: subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: FOS: Computer and information sciences

description: Understanding application resilience (or error tolerance) in the presence of hardware transient faults on data objects is critical to ensure computing integrity and enable efficient application-level fault tolerance mechanisms. However, we lack a method and a tool to quantify application resilience to transient faults on data objects. The traditional method, random fault injection, cannot help, because of losing data semantics and insufficient information on how and where errors are tolerated. In this paper, we introduce a method and a tool (called MOARD) to model and quantify application resilience to transient faults on data objects. Our method is based on systematically quantifying error masking events caused by application-inherent semantics and program constructs. We use MOARD to study how and why errors in data objects can be tolerated by the application. We demonstrate tangible benefits of using MOARD to direct a fault tolerance mechanism to protect data objects.
description: arXiv admin note: text overlap with arXiv:1705.00267
The chemistry of thujone : new enantioselective syntheses of Ambrox[Registered trade mark] and Epi-Ambrox
Creators: name: Cirera, Carles
Publisher: name: University of British Columbia
Year: 2008

description: This thesis is concerned with the development of a new synthetic approach to(-)-Ambrox® (2) and epi-Ambrox (3) using thujone (1) as an enantiopure building block. Thujone (1), a readily available starting material obtained from Western red cedar, can be efficiently converted to D-cyperone (144), which can be chemically elaborated to obtain the key intermediate, enone 143. As a model study for the synthesis of racemic 2 and 3, a synthetic sequence starting with a cyclohexanone derivative has also been developed to afford the racemic intermediate143. Acid catalyzed Robinson annelation of 2-methylcyclohexanone with1-chloropentan-3-one gave enone 165. Methylation of 165 to 166 with methyl iodide and potassium tert-amylate proceeded in high yield. Wolff-Kishner reduction of 166 gave 167which was then oxidized to racemic 143 with sodium dichromate. At this stage, enantiopure 143, obtained via 144, from thujone (1) was prepared and compared with racemic 143. A novel method for the transposition of the carbonyl function in enantiopure 143 to the isomeric enantiopure enone 172 was developed. Treatment of 143 with manganese(III) acetate allowed introduction of an acetoxy function at the C8 position, to afford a mixture of isomers (185 and 186 4:1 ratio) in excellent yield (86 %). Reduction of 185and 186 with lithium aluminum hydride provided a mixture of alcohols, which without separation, was treated with p-toluenesulfonic acid to yield 172. This 3 step process, 143to 172, could be performed without isolation of intermediates and in an overall yield of64 %. Stereoselective alkylation of 172 with ethyl iodoacetate yielded compound 201exclusively with entry of the side chain in an axial orientation. Hydrogenation of 201 to205 and then ketalization, afforded 215. Reduction of the ester, protection of the alcohol functionality, and deprotection of the carbonyl, finally gave compound 219 in excellent yields. Reaction of 219 with the cerium chloride-methyllithium reagent gave 220, which yielded, after hydrogenolysis, diol 221. p-Toluenesulfonic acid catalyzed cyclization ofdiol 221 provided the potent ambergris odorant (-)-epi-Ambrox (3). Epimerization of the side chain in 219 with sodium methoxide in methanol gave compound 225 which was further converted into (-)-Ambrox® (2) by an identical sequence as for (-)-epi-Ambrox (3).
Potential of colors for determining age and metallicity of stellar populations
Creators: name: Li, Zhongmu
name: Han, Zhanwen
name: Zhang, Fenghui
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Colors are usually not used for constraining stellar populations because they are thought to have the well-known agemetallicity degeneracy, but some recent works show that colors can also be used. A simple stellar population synthesis model is widely used, but there is no analysis for its colors. We try to find colors that can potentially be used to determine the age and metallicity of stellar populations by the standard model. Principal component analysis and relative sensitive parameter techniques are used in this work. As a result, U-K, U-H, U-J, B-K, B-H, U-I, B-J, and V-K are found to be more important for studying populations than others. Pairs of colors such as B-K and B-V are found to be able to disentangle the stellar age-metallicity degeneracy via the high-resolution model, while pairs such as U-K and R-I may be used instead when the low-resolution model is used. Furthermore, the u-g and r-i colors of the low-resolution model seem to have the same potential, but there are no such colors for the high-resolution one. In conclusion, some colors have been shown to have the potential to determine the age and metallicity of stellar populations, but relative metallicity and age sensitivities of colors in different stellar population synthesis models are usually different. In addition, minor star formations will make star systems look younger and more metal rich than their dominating populations.
description: Accepted for publication in A&A, 6 pages, 7 figures
A Graph-based Method for Session-based Recommendations
Creators: name: Delianidi, Marina
name: Salampasis, Michail
name: Diamantaras, Konstantinos
name: Siomos, Theodosios
name: Katsalis, Alkiviadis
name: Karaveli, Iphigenia
Publisher: name: arXiv
Year: 2021
Subjects: subject: Information Retrieval (cs.IR)
subject: FOS: Computer and information sciences
subject: E.2; H.2; K.1

description: We present a graph-based approach for the data management tasks and the efficient operation of a system for session-based next-item recommendations. The proposed method can collect data continuously and incrementally from an ecommerce web site, thus seemingly prepare the necessary data infrastructure for the recommendation algorithm to operate without any excessive training phase. Our work aims at developing a recommender method that represents a balance between data processing and management efficiency requirements and the effectiveness of the recommendations produced. We use the Neo4j graph database to implement a prototype of such a system. Furthermore, we use an industry dataset corresponding to a typical e-commerce session-based scenario, and we report on experiments using our graph-based approach and other state-of-the-art machine learning and deep learning methods.
description: Preprint version of the paper, the original paper is published on ACM DL. 6 pages, 1 figure, 1 table
Semidefinite Representation of the $k$-Ellipse
Creators: name: Nie, Jiawang
name: Parrilo, Pablo A.
name: Sturmfels, Bernd
Publisher: name: arXiv
Year: 2007
Subjects: subject: Algebraic Geometry (math.AG)
subject: Optimization and Control (math.OC)
subject: FOS: Mathematics

description: The $k$-ellipse is the plane algebraic curve consisting of all points whose sum of distances from $k$ given points is a fixed number. The polynomial equation defining the $k$-ellipse has degree $2^k$ if $k$ is odd and degree $2^k{-}\binom{k}{k/2}$ if $k$ is even. We express this polynomial equation as the determinant of a symmetric matrix of linear polynomials. Our representation extends to weighted $k$-ellipses and $k$-ellipsoids in arbitrary dimensions, and it leads to new geometric applications of semidefinite programming.
description: 16 pages, 5 figures
Testing one-loop galaxy bias: joint analysis of power spectrum and bispectrum
Creators: name: Eggemeier, Alexander
name: Scoccimarro, Román
name: Smith, Robert E.
name: Crocce, Martin
name: Pezzotta, Andrea
name: Sánchez, Ariel G.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present a joint likelihood analysis of the real-space power spectrum and bispectrum measured from a variety of halo and galaxy mock catalogs. A novel aspect of this work is the inclusion of nonlinear triangle configurations for the bispectrum, made possible by a complete next-to-leading order ("one-loop") description of galaxy bias, as is already common practice for the power spectrum. Based on the goodness-of-fit and the unbiasedness of the parameter posteriors, we accomplish a stringent validation of this model compared to the leading order ("tree-level") bispectrum. Using measurement uncertainties that correspond to an effective survey volume of $6\,(\mathrm{Gpc}/h)^3$, we determine that the one-loop corrections roughly double the applicable range of scales, from $\sim 0.17\,h/\mathrm{Mpc}$ (tree-level) to $\sim 0.3\,h/\mathrm{Mpc}$. This converts into a $1.5 - 2$x improvement on constraints of the linear bias parameter at fixed cosmology, and a $1.5 - 2.4$x shrinkage of uncertainties on the amplitude of fluctuations $A_s$, which clearly demonstrates the benefit of extracting information from nonlinear scales despite having to marginalize over a larger number of bias parameters. Besides, our precise measurements of galaxy bias parameters up to fourth order allow for thorough comparisons to coevolution relations, showing excellent agreement for all contributions generated by the nonlocal action of gravity. Using these relations in the likelihood analysis does not compromise the model validity and is crucial for obtaining the quoted improvements on $A_s$. We also analyzed the impact of higher-derivative and scale-dependent stochastic terms, finding that for a subset of our tracers the former can boost the performance of the tree-level model with constraints on $A_s$ that are only slightly degraded compared to the one-loop model.
description: 33 pages, 13 figures, supporting Mathematica notebook available at https://doi.org/10.5281/zenodo.4529886, Python package for Delaunay binning correction available at https://github.com/aegge/BispTools
Whole Language For Native Students
Creators: name: Zarry, Len
Publisher: name: Canadian Journal of Native Education
Year: 2021

description: Some of the basic premises of the whole language approach in teaching are discussed, including an emphasis on language experience; the requirement for relevance to the child’s experience; and the requirement for the teacher to model by being an active learner and collaborator, and by incorporting children’s choices in content among reading resources. The author states that this approach in teaching and learning is consistent with Native learning styles, because it is a holistic approach. A bibliography of recent commentary, explanation, criticism, and research about the whole language approach is appended.
description: Canadian Journal of Native Education, Vol. 18 No. 1 (1991)
Long range propagation of ultrafast, ionizing laser pulses in a resonant nonlinear medium
Creators: name: Demeter, G.
name: Moody, J. T.
name: Aladi, M.
name: Bachmann, A. -M.
name: Batsch, F.
name: Braunmuller, F.
name: Djotyan, G. P.
name: Fedosseev, V.
name: Friebel, F.
name: Gessner, S.
name: Granados, E.
name: Guran, E.
name: Huther, M.
name: Kedves, M. A.
name: Martyanov, M.
name: Muggli, P.
name: Oz, E.
name: Panuganti, H.
name: Raczkevi, B.
name: Verra, L.
name: Della Porta, G. Zevi
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optics (physics.optics)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: We study the propagation of 0.05-1 TW power, ultrafast laser pulses in a 10 meter long rubidium vapor cell. The central wavelength of the laser is resonant with the $D_2$ line of rubidium and the peak intensity in the $10^{12}-10^{14} ~W/cm^2$ range, enough to create a plasma channel with single electron ionization. We observe the absorption of the laser pulse for low energy, a regime of transverse confinement of the laser beam by the strong resonant nonlinearity for higher energies and the transverse broadening of the output beam when the nonlinearity is saturated due to full medium ionization. We compare experimental observations of transmitted pulse energy and transverse fluence profile with the results of computer simulations modeling pulse propagation. We find a qualitative agreement between theory and experiment that corroborates the validity of our propagation model. While the quantitative differences are substantial, the results show that the model can be used to interpret the observed phenomena in terms of self-focusing and channeling of the laser pulses by the saturable nonlinearity and the transparency of the fully ionized medium along the propagation axis.
description: 12 pages, 10 Figures
Fundamental questions relating to ion conduction in disordered solids
Creators: name: Dyre, Jeppe C.
name: Maass, Philipp
name: Roling, Bernhard
name: Sidebottom, David L.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: A number of basic scientific questions relating to ion conduction in homogeneously disordered solids are discussed. The questions deal with how to define the mobile ion density, what can be learned from electrode effects, what is the ion transport mechanism, the role of dimensionality, and what are the origins of the mixed-alkali effect, of time-temperature superposition, and of the nearly-constant loss. Answers are suggested to some of these questions, but the main purpose of the paper is to draw attention to the fact that this field of research still presents several fundamental challenges.
description: Reports on Progress in Physics, to appear
Η έννοια της κυριαρχίας και η πρόσληψή της από τους Έλληνες δημοσιολόγους μέχρι τον μεσοπόλεμο
Creators: name: Μανωλίδης, Δημήτριος Γεωργίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2020
Subjects: Κυριαρχία
Νικόλαος Σαρίπολος
Αλέξανδρος Σβώλος
Sovereignty
Nikolaos Saripolos
Alexandros Svolos

description: Με την παρούσα διπλωματική εργασία επιχειρείται η διερεύνηση της πρόσληψης της έννοιας της κυριαρχίας από τους Έλληνες δημοσιολόγους μέχρι και την περίοδο του μεσοπολέμου. Μέσα από τη διαδικασία αυτή, σκοπός είναι να αναδειχθεί το ευρύ φάσμα σημασιοδοτήσεων που απέκτησε η κυριαρχία σε συνάρτηση με τη συγκεκριμένη ιστορική εποχή και τη διαφορετική μεθοδολογία και φιλοσοφία που χαρακτηρίζει τον εκάστοτε επιστήμονα που την εξετάζει. Μια τέτοια γνώση είναι χρήσιμη ιδίως εν όψει της διαρκούς επικαιρότητας που απέκτησε η έννοια με τη διακήρυξη του τέλους της κυριαρχίας των εθνικών κρατών στο φόντο των πλανητικών και περιφερειακών εξελίξεων των τελευταίων δεκαετιών. Παράλληλα όμως μέσα από την εξέταση μιας τόσο πολυεδρικής έννοιας δίνεται η ευκαιρία της επαφής με σημαντικές όψεις του έργου των θεμελιωτών του εγχωρίου δημοσίου δικαίου. Ειδικότερα, στο πρώτο μέρος εξετάζεται η ανάδειξη της κυριαρχίας στη νεωτερικότητα και η επεξεργασία της από ορισμένους σημαίνοντες στοχαστές όπως ο Jean Bodin, ο Thomas Hobbes και ο Jean Jacque Rousseau. Κατόπιν, στο δεύτερο μέρος σκιαγραφείται η ανάπτυξη της έννοιας από τρία διαδοχικά ρεύματα δημοσιολόγων: το ρεύμα του φυσικού δικαίου, το ρεύμα του νομικού θετικισμού και το ρεύμα της κριτικής στον νομικισμό. Μεταξύ αυτών βρίσκονται δεσπόζουσες προσωπικότητες όπως ο Νικόλαος Ι. Σαρίπολος, ο Νικόλαος Ν. Σαρίπολος και ο Αλέξανδρος Σβώλος
description: The present thesis attempts to examine the conception of sovereignty by the Greek public law theorists until the interwar era. This process aims to emphasize on the multiple meanings of the concept, in accordance to the concrete historical circumstances, as well as the different method and philosophical approach of the various contemporary theorist. Such a cognizance proves useful and relevant, in particular due to the professed ending of national state sovereignty, as a consequence of the global and regional developments of the recent decades. In addition to this, such a multi-faceted notion provides the opportunity to examine the most important aspects of the work of the founders of the domestic public law. Specifically, the first part highlights the emergence of the modern sovereignty, under the processing of significant thinkers like Jean Bodin, Thomas Hobbes and Jean Jacque Rousseau. The second part foreshadows the evolution of the notion through three consecutive currents of public legal thought; natural law, legal positivism and legalism critique. Among them, dominant personalities arise, such as Nikolaos I. Saripolos, Nikolaos N. Saripolos and Alexandros Svolos
On the nature of the 35-day cycle in HZ Her/Her X-1
Creators: name: Shakura, N. I.
name: Kolesnikov, D. A.
name: Postnov, K. A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Regular variations of the pulse period of Her X-1 with X-ray flux observed by Fermi-GBM are examined. We argue that these regular variations result from the free precession of the neutron star in Her X-1.
description: 2 figures, to be published in Astronomy Reports
Optical signatures of quantum phase transitions in a light-matter system
Creators: name: Jarrett, Timothy C.
name: Olaya-Castro, Alexandra
name: Johnson, Neil F.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Information about quantum phase transitions in conventional condensed matter systems, must be sought by probing the matter system itself. By contrast, we show that mixed matter-light systems offer a distinct advantage in that the photon field carries clear signatures of the associated quantum critical phenomena. Having derived an accurate, size-consistent Hamiltonian for the photonic field in the well-known Dicke model, we predict striking behavior of the optical squeezing and photon statistics near the phase transition. The corresponding dynamics resemble those of a degenerate parametric amplifier. Our findings boost the motivation for exploring exotic quantum phase transition phenomena in atom-cavity, nanostructure-cavity, and nanostructure-photonic-band-gap systems.
description: 4 pages, 4 figures
Lexical and grammatical elicitation: Epistemic indefinites
Creators: name: Kipkoech, Linus
name: Bossi, Madeline
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2022
Subjects: subject: sgc

description: One .mp4 file and one .pdf file. Elicitation of different epistemic indefinite noun forms. Exploration of how -yan interacts with other nominal suffixes.
Higher-derivative Lorentz-breaking dispersion relations: a thermal description
Creators: name: Filho, A. A. Araújo
name: Petrov, A. Yu.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: This paper is devoted to study the thermal aspects of a photon gas within the context of Planck-scale-modified dispersion relations. We study the spectrum of radiation and the correction to the \textit{Stefan$-$Boltzmann} law in different cases when the Lorentz symmetry is no longer preserved. Explicitly, we examine two models within the context of CPT$-$even and CPT$-$odd sectors respectively. To do so, three distinct scenarios of the Universe are considered: the Cosmic Microwave Background (CMB), the electroweak epoch, and the inflationary era. Moreover, the equations of state in these cases turn out to display a dependence on Lorentz-breaking parameters. Finally, we also provide for both theories the analyses of the Helmholtz free energy, the mean energy, the entropy and the heat capacity.
description: 24 pages, 13 figures
Photochemistry of dibenzobarrelenes and [alpha]-adamantyl acetophenones in both the solution and crystalline state
Creators: name: Yang, Jie
Publisher: name: University of British Columbia
Year: 2008

description: Six di- and mono- aryl substituted dibenzobarrelene derivatives were synthesized for studies of the di-n-methane rearrangement in both solution and the solid state. The starting materials and their photoproducts were characterized by spectroscopic methods. The photoproduct ratios of these dibenzobarrelene derivatives in the di-it-methanere arrangement, in both the solution and solid state, were determined. Based on the X-ray crystal structures and Molecular Mechanics calculations (MMX), the regioselectivities of these dibenzobarrelene substrates in the multi-channel di-n-methane rearrangement were discussed in terms of electronic effects and intramolecular steric effects. A series of a-adamantyl acetophenone derivatives were synthesized for the structure-reactivity correlation studies in the solid state Norrish type II photoreactions. The structure assignments of both the starting substrates and the diastereomeric photoproducts were primarily based on NMR techniques, such as HETCOR and NOE experiments. The X-ray crystal structures of four a-adamantyl acetophenones were determined, and their solid state reactivities were discussed relative to the proposed ideal geometric requirements for hydrogen abstraction. Chiral crystals of carboxylic acid-amine salts were synthesized for solid state asymmetric induction studies. Some of these chiral salts were made from a prochiral, carboxylic acid group-containing a-adamantyl acetophenone (119) and optically pure chiral amines. The solid state photolyses of these chiral salts afforded photoproducts in optially active form (12%-97% e.e.). The solid state structure-reactivity was discussed based on X-ray crystal structures of crystals of these starting chiral salts. The absolute configuration correlation between a chiral crystalline salt 169n and its major photoproduct 159s was established, which revealed that salt 169n reacted stereospecifically via a topochernically allowed pathway to give a single diastereomer of photoproduct 159s. A macrocyclic diketone 108b was synthesized. It was found that this diketone did not undergo the Norrish type II reaction in the crystalline state. The hydrogen abstraction geometry of this diketone was analysed based on its crystal structure, and the distances between 7-hydrogens and the carbonyl oxygens were found to be beyond the proposed maximum abstracting distance of 3.0 A. Pyrazinone 197 and pyrazinethione 199 were synthesized for the solid state [4 +4] photocycloaddition reactions. It was found that pyrazinone 197 gave high optical yield of the photoproduct 198 (95% e.e.); this result was discussed based on the crystal structure of the substrate 197. Pyrazinethione 199 was found photochemically unreactive.
Συσχέτιση Γενικής Διδακτικής και Εκπαιδευτικού (Διδακτικού) Σχεδιασμού
Creators: name: Παπαδοπούλου, Ελπίδα Ιωάννη
Publisher: name: Aristotle University of Thessaloniki
Year: 2020
Subjects: Γενική Διδακτική
Εκπαιδευτικός Σχεδιασμός
Διδακτικό μοντέλο
General Didactics
Instructional Design
Didactic Model

description: Σκοπός της διατριβής ήταν να διερευνηθεί τυχόν συσχέτιση μεταξύ της Γενικής Διδακτικής και του Εκπαιδευτικού (Διδακτικού) Σχεδιασμού με απώτερο στόχο την εξέταση, αφενός το κατά πόσο οι δύο αυτές προσεγγίσεις έχουν κοινά σημεία αλλά και αφετέρου το κατά πόσο μπορούν, μελλοντικά, να ενοποιηθούν, προκειμένου να υπάρξει ένα αποτελεσματικό και αποδοτικό πλαίσιο οργάνωσης της διδασκαλίας. Ακόμη, επιμέρους στόχοι της εργασίας αποτέλεσαν η εξέταση της πρακτικής εφαρμογής των δύο αυτών προσεγγίσεων στη Χημική εκπαίδευση αλλά και στην εκπαίδευση γενικότερα. Αρχικά, προσεγγίστηκαν εννοιολογικά οι δύο αυτές μέθοδοι και αναφέρθηκαν οι σημαντικότεροι σταθμοί που συνέβαλαν στην ιστορική ανάπτυξη και διαμόρφωσή τους. Στη συνέχεια, παρουσιάστηκαν αντιπροσωπευτικά διδακτικά μοντέλα καθώς και νέες τάσεις της κάθε μεθοδολογίας. Η διερεύνηση περί ύπαρξης ενδεχόμενης μελλοντικής συσχέτισης των δύο προσεγγίσεων ήταν θετική αφού παρουσιάστηκαν τρεις πιθανές προτάσεις όπου θα μπορούσε να υπάρξει αλληλεπίδραση. Ωστόσο, η βιβλιογραφική επισκόπηση έδειξε ότι η πιθανότητα κοινής πορείας μεταξύ τους βρίσκεται ακόμη σε πρώιμο στάδιο, γεγονός που τονίζει, ως ένα βαθμό, τη σημασία της συγκεκριμένης διατριβής αλλά και την ανάγκη για περαιτέρω μελλοντική έρευνα
description: The main purpose of this thesis was to investigate possible correlation between General Didactics and Instructional Design, in order to examine whether these two approaches share common features as well as to determine whether they could integrate in the future, providing in that way an effective and efficient framework for teaching planning. Moreover, this study focused on the practical application of these two methods in Science Education and in the field of Education in general. Initially, the terminology of these approaches was given and then the most important landmarks that contributed in their historical development were described. Next, the most representative didactic models of General Didactics and Instructional Design as well as the most current trends of the aforementioned approaches were demonstrated. The investigation of the possibility for future correlation between the two methods was indeed positive since the present thesis revealed three potential suggestions whereas General Didactics and Instructional Design could interact. However, the literature review showed that a common future is still in its infancy, which to a certain degree points out the significance of this thesis, but also indicates the need for further research on this topic