cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Αλληλεπιδράσεις μικροθρεπτικών συστατικών και βοτάνων με φαρμακευτικές ουσίες
Creators: name: Σκουλικαρίτης, Λεωνίδας Γεωργίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2019
Subjects: Κλινική Φαρμακολογία-Καταγραφή
Βιομηχανική φαρμακολογία
Clinical pharmacology-Reference
Industrial pharmacology

description: Όσο αυξάνονται το προσδόκιμο ζωής και η γήρανση του πληθυσμού, τόσο θα αυξάνονται και οι ανάγκες για μια καλύτερη ενημέρωση από τις νεότερες ηλικίες για την αξία του διαχρονικού υγιεινού τρόπου ζωής μέσα από την καθημερινή σωματική άσκηση, τη σωστή διατροφή και το κατάλληλο φυσικό, κοινωνικό και προσωπικό περιβάλλον, έτσι ώστε το γήρας να μην είναι πλέον συνώνυμο των ασθενειών, της αδυναμίας και της ανικανότητας. Οι άνθρωποι ζουν περισσότερο αλλά με περισσότερες ασθένειες έχοντας ανάγκη καθημερινές θεραπείες, φαρμακευτικές ή άλλες. Παράλληλα, η ανεπάρκεια της καθημερινής πρόσληψης των απαραίτητων μικροθρεπτικών συστατικών, οι οποίες σχετίζονται, και ιδιαίτερα σε μεγαλύτερες ηλικίες, με τη λειτουργική έκπτωση του ανθρώπινου οργανισμού, οδηγεί στην ανάγκη κάλυψης της καθημερινής πρόσληψής τους μέσω των τροφών ή μέσω συμπληρωματικών επιλογών διατροφής. Συνεπώς, η ταυτόχρονη χρήση και χορήγηση φαρμακευτικών ουσιών και μικροθρεπτικών συστατικών και βοτάνων θα είναι ολοένα και περισσότερο απαραίτητη, όπως απαραίτητη θα είναι και η γνώση για τις ενδεχόμενες αλληλεπιδράσεις των φαρμακευτικών ουσιών με τα μικροθρεπτικά συστατικά και βότανα. Η παρούσα εργασία σκοπό έχει να ερευνήσει το παραπάνω θέμα των αλληλεπιδράσεων με τη συνολική συγχορήγηση και λήψη ουσιών μέσα από τη διαθέσιμη βιβλιογραφία
description: As the life expectancy and the aging of the population increase, the need for better information from the younger age on the value of the healthy lifestyle through daily physical exercise, proper nutrition and appropriate physical, social and personal environment so that old age is no longer a synonym of illness, weakness and disability. People live longer but with more illnesses in need of daily medication or other treatments At the same time, the inadequacy of the daily intake of the necessary micronutrients, which are associated, especially in older age, with the functional reduction of the human organism, leads to the need to cover their daily intakes through food or through supplemental dietary choices. Consequently, the simultaneous use and administration of pharmaceuticals and micronutrients and herbs will become increasingly necessary, as knowledge about the potential interactions of drugs with micronutrients and herbs will also be necessary. The present study aims to investigate the above issue of interactions with the overall co-administration and intake of substances through the available literature
Minimal $k$-inflation in light of the conformal metric-affine geometry
Creators: name: Mikura, Yusuke
name: Tada, Yuichiro
name: Yokoyama, Shuichiro
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We motivate a minimal realization of slow-roll $k$-inflation by incorporating the local conformal symmetry and the broken global $\mathrm{SO}(1,1)$ symmetry in the metric-affine geometry. With use of the metric-affine geometry where both the metric and the affine connection are treated as independent variables, the local conformal symmetry can be preserved in each term of the Lagrangian and thus higher derivatives of scalar fields can be easily added in a conformally invariant way. Predictions of this minimal slow-roll $k$-inflation, $n_\mathrm{s}\sim 0.96$, $r\sim 0.005$, and $c_\mathrm{s}\sim 0.03$, are not only consistent with current observational data but also have a prospect to be tested by forthcoming observations.
description: 8 pages, 1 figure, v2:published version, references added, v3:reference added
RECAST: Enabling User Recourse and Interpretability of Toxicity Detection Models with Interactive Visualization
Creators: name: Wright, Austin P
name: Shaikh, Omar
name: Park, Haekyu
name: Epperson, Will
name: Ahmed, Muhammed
name: Pinel, Stephane
name: Chau, Duen Horng
name: Yang, Diyi
Publisher: name: arXiv
Year: 2021
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: Computation and Language (cs.CL)
subject: Machine Learning (cs.LG)
subject: Social and Information Networks (cs.SI)
subject: FOS: Computer and information sciences

description: With the widespread use of toxic language online, platforms are increasingly using automated systems that leverage advances in natural language processing to automatically flag and remove toxic comments. However, most automated systems -- when detecting and moderating toxic language -- do not provide feedback to their users, let alone provide an avenue of recourse for these users to make actionable changes. We present our work, RECAST, an interactive, open-sourced web tool for visualizing these models' toxic predictions, while providing alternative suggestions for flagged toxic language. Our work also provides users with a new path of recourse when using these automated moderation tools. RECAST highlights text responsible for classifying toxicity, and allows users to interactively substitute potentially toxic phrases with neutral alternatives. We examined the effect of RECAST via two large-scale user evaluations, and found that RECAST was highly effective at helping users reduce toxicity as detected through the model. Users also gained a stronger understanding of the underlying toxicity criterion used by black-box models, enabling transparency and recourse. In addition, we found that when users focus on optimizing language for these models instead of their own judgement (which is the implied incentive and goal of deploying automated models), these models cease to be effective classifiers of toxicity compared to human annotations. This opens a discussion for how toxicity detection models work and should work, and their effect on the future of online discourse.
description: 26 pages, 5 figures, CSCW '21
Imaging and Spectroscopy of Ultra Steep Spectrum Radio Sources
Creators: name: Bornancini, Carlos G.
name: De Breuck, Carlos
name: de Vries, Wim
name: Croft, Steve
name: van Breugel, Wil
name: Rottgering, Huub
name: Minniti, Dante
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present a sample of 40 Ultra Steep Spectrum (USS, $α\leq -1.3$, $S_ν\propto ν^α$) radio sources selected from the Westerbork in the Southern Hemisphere (WISH) catalog. The USS sources have been imaged in K--band at the Cerro Tololo Inter-American Observatory (CTIO) and with the Very Large Telescope at Cerro Paranal. We also present VLT, Keck and Willian Herschel Telescope(WHT) optical spectroscopy of 14 targets selection from 4 different USS samples. For 12 sources, we have been able to determine the redshifts, including 4 new radio galaxies at z > 3. We find that most of our USS sources have predominantly small (6'') radio sizes and faint magnitudes (K~18). The mean K-band counterpart magnitude is $\bar{K}$=18.6. The expected redshift distribution estimated using the Hubble K-z diagram has a mean of $\bar{z}_{exp}$$\sim$2.13, which is higher than the predicted redshift obtained for the SUMSS-NVSS sample and the expected redshift obtained in the 6C$^{**}$ survey. The compact USS sample analyzed here may contain a higher fraction of galaxies which are high redshift and/or are heavily obscured by dust. Using the 74, 352 and 1400 MHz flux densities of a sub-sample, we construct a radio colour-colour diagram. We find that all but one of our USS sources have a strong tendency to flatten below 352 MHz. We also find that the highest redshift source from this paper (at z=3.84) does not show evidence for spectral flattening down to 151 MHz. This suggests that very low frequency selected USS samples will likely be more efficient to find high redshift galaxies.
description: Accepted for publication in MNRAS, 14 pages including 44 PostScript figures and 4 tables. Version with all figures available from http://www.eso.org/~cdebreuc/papers.html
A Robust and Accurate Approach to Detect Process Drifts from Event Streams
Creators: name: Lu, Yang
name: Chen, Qifan
name: Poon, Simon
Publisher: name: arXiv
Year: 2021
Subjects: subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: Business processes are bound to evolve as a form of adaption to changes, and such changes are referred as process drifts. Current process drift detection methods perform well on clean event log data, but the performance can be tremendously affected by noises. A good process drift detection method should be accurate, fast, and robust to noises. In this paper, we propose an offline process drift detection method which identifies each newly observed behaviour as a candidate drift point and checks if the new behaviour can signify significant changes to the original process behaviours. In addition, a bidirectional search method is proposed to accurately locate both the adding and removing of behaviours. The proposed method can accurately detect drift points from event logs and is robust to noises. Both artificial and real-life event logs are used to evaluate our method. Results show that our method can consistently report accurate process drift time while maintaining a reasonably fast detection speed.
Living with facial disfigurement : a phenomenological study of individuals after radical surgery for head and neck cancer
Creators: name: Whitehouse, Kathryn Jane Cline
Publisher: name: University of British Columbia
Year: 2008

description: Head and neck cancer comprises four percent of all cancers. Clearly, individuals diagnosed with this type of cancer must cope not only with the diagnosis of cancer and the related fears, but also with the apprehension associated with the acquired facial disfigurement and related functional impairment resulting from the radical surgical treatment. A review of the literature revealed that nursing research which focusses on understanding people's perceptions and experiences with facial disfigurement after having had radical surgery for head and neck cancer is nonexistent. The impact of this type of cancer and its social implications must be far-reaching considering the emphasis placed on appearance, particularly by people in North American society. This study addressed the need for an increased understanding of the lived experiences of individuals with this type of acquired facial disfigurement. The purpose of this phenomenological study was to explore and describe the perspectives and experiences of people living with facial disfigurement following surgery for head and neck cancer. In addition, the study examined and described the meaning of the disfigurement for these individuals and the impact of their altered facial appearance on their interpersonal relationships and functional abilities. Four men and four women volunteers were selected as participants for the study from among patients being seen at the British Columbia Cancer Agency. Data collection and analysis occurred concurrently by means of indepth interviews, guided by open-ended questions. Field notes and the audio-taped interviews, which were transcribed verbatim, yielded the data for analyses. Two principal themes constitute the research findings: loss and stigma. All of the participants experienced numerous, compound losses as a result of radical head and neck surgery. During the immediate postoperative period, the losses were primarily functional, but as recovery proceeded, the losses became more social in nature. The second theme, stigma, which is an attribute considered by others as discrediting, was experienced by the participants throughout the entire recovery period. Stigma protracted the illness experience and multiplied the losses, particularly social losses. In order to cope with their situations, the participants developed several coping strategies to deal with the losses and stigma associated with cancer and facial disfigurement. The findings are discussed in conjunction with relevant literature. Implications for nursing practice and education are identified. Recommendations are made for future research based on this study.
Approximation and learning by greedy algorithms
Creators: name: Barron, Andrew R.
name: Cohen, Albert
name: Dahmen, Wolfgang
name: DeVore, Ronald A.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Statistics Theory (math.ST)
subject: FOS: Mathematics
subject: 62G07, 41A46, 41A63, 46N30 (Primary)

description: We consider the problem of approximating a given element $f$ from a Hilbert space $\mathcal{H}$ by means of greedy algorithms and the application of such procedures to the regression problem in statistical learning theory. We improve on the existing theory of convergence rates for both the orthogonal greedy algorithm and the relaxed greedy algorithm, as well as for the forward stepwise projection algorithm. For all these algorithms, we prove convergence results for a variety of function classes and not simply those that are related to the convex hull of the dictionary. We then show how these bounds for convergence rates lead to a new theory for the performance of greedy algorithms in learning. In particular, we build upon the results in [IEEE Trans. Inform. Theory 42 (1996) 2118--2132] to construct learning algorithms based on greedy approximations which are universally consistent and provide provable convergence rates for large classes of functions. The use of greedy algorithms in the context of learning is very appealing since it greatly reduces the computational burden when compared with standard model selection using general dictionaries.
description: Published in at http://dx.doi.org/10.1214/009053607000000631 the Annals of Statistics (http://www.imstat.org/aos/) by the Institute of Mathematical Statistics (http://www.imstat.org)
Exotic Image Formation in Strong Gravitational Lensing by Clusters of Galaxies -- II: Uncertainties
Creators: name: Meena, Ashish Kumar
name: Ghosh, Agniva
name: Bagla, J. S.
name: Williams, L. L. R.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Due to the finite amount of observational data, the best-fit parameters corresponding to the reconstructed cluster mass have uncertainties. In turn, these uncertainties affect the inferences made from these mass models. Following our earlier work, we have studied the effect of such uncertainties on the singularity maps in simulated and actual galaxy clusters. The mass models for both simulated and real clusters have been constructed using grale. The final best-fit mass models created using grale give the simplest singularity maps and a lower limit on the number of point singularities that a lens has to offer. The simple nature of these singularity maps also puts a lower limit on the number of three image (tangential and radial) arcs that a cluster lens has. Hence, we estimate the number of galaxy sources giving rise to the three image arcs, which can be observed with the James Webb Space Telescope (JWST). We find that we expect to observe at least 20-30 tangential and 5-10 radial three-image arcs in the Hubble Frontier Fields cluster lenses with the JWST.
description: 15 pages, 7 figures. Accepted in MNRAS
Continuum Percolation and Stochastic Epidemic Models on Poisson and Ginibre Point Processes
Creators: name: Katori, Machiko
name: Katori, Makoto
Publisher: name: arXiv
Year: 2021
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The most studied continuum percolation model in two dimensions is the Boolean model consisting of disks with the same radius whose centers are randomly distributed on the Poisson point process (PPP). We also consider the Boolean percolation model on the Ginibre point process (GPP), which is a typical repelling point process realizing hyperuniformity. We think that the PPP approximates a disordered configuration of individuals, while the GPP does a configuration of citizens adopting a strategy to keep social distancing in a city in order to avoid contagion. We consider the SIR models with contagious infection on supercritical percolation clusters formed on the PPP and the GPP. By numerical simulations, we studied dependence of the percolation phenomena and the infection processes on the PPP- and the GPP-underlying graphs. We show that in a subcritical regime of infection rate the PPP-based models show emergence of infection clusters on clumping of points which is formed by fluctuation of uncorrelated Poissonian statistics. On the other hand, the cumulative numbers of infected individuals in processes are suppressed in the GPP-based models.
description: v4: bibtex, 30 pages, 11 figures. Final version for publication in Physica A
Phonological elicitation: Vowel quality, length, and glottal stop
Creators: name: Sales, Henry
name: Bertet, Denis
name: Garvin, Karee
name: Michael, Lev
name: Scott, Tessa
name: Wilbanks, Eric
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2021
Subjects: subject: mam

description: Transcription of various vocalic contrasts conflated in the orthography, with focus on narrow transcription of glottalization, length, and vowel quality. Second half of audio is cut off due to technical error. Lead elicitor and scribe: Karee Garvin. Clean copy: Eric Wilbanks.
Η συγκατάθεση στην επεξεργασία προσωπικών δεδομένων στα μέσα κοινωνικής δικτύωσης
Creators: name: Ναθαναηλίδης, Κωνσταντίνος Ευαγγέλου
Publisher: name: Aristotle University of Thessaloniki
Year: 2019
Subjects: Μέσα κοινωνικής δικτύωσης
Συγκατάθεση
Ιδιωτικότητα
Social media
Consent
Privacy

description: Οι υπηρεσίες κοινωνικής δικτύωσης, δημιουργώντας διαδικτυακές κοινότητες από ανθρώπους με κοινά ενδιαφέροντα και δραστηριότητες, έχουν γίνει ιδιαιτέρως δημοφιλείς στις μέρες μας. Οι υπηρεσίες αυτές λειτουργούν ψηφιακά και προσφέρουν διάφορους τρόπους επικοινωνίας και διάδρασης στους εγγεγραμμένους χρήστες τους μέσα από τα προσωπικά τους προφίλ. Αναμφίβολα τα μέσα κοινωνικής δικτύωσης αποτελούν μία νέα μορφή εκκοινώνισης και επικοινωνίας, ιδιαιτέρως ανάμεσα στους νέους και όχι μόνο. Ταυτόχρονα όμως, οι υπηρεσίες αυτές προσδίδουν και μια καινούργια διάσταση στην έννοια του «προσωπικού χώρου», δημιουργώντας σοβαρές ανησυχίες σχετικά με την παραβίαση της ιδιωτικότητας των χρηστών τους, των οποίων τα προσωπικά δεδομένα δημοσιοποιούνται στο διαδίκτυο με πρωτοφανή τρόπο και ποσότητα. Μέσα από την παρούσα εργασία επιχειρείται να ερμηνευθεί η συγκατάθεση των χρηστών ως νόμιμος λόγος επεξεργασίας των προσωπικών τους δεδομένων. Διευκρινίζεται η φύση της συγκατάθεσης, πως αυτή πρέπει να παρέχεται σύμφωνα με τον ΓΚΠΔ και υπό ποιες προϋποθέσεις, αναλύονται οι συνέπειες της έλλειψης της και πως αυτή διαφοροποιείται μεταξύ ανηλίκων και ενηλίκων. Στη συνέχεια, γίνεται λόγος για τα δημοφιλέστερα μέσα κοινωνικής δικτύωσης, τον τρόπο λειτουργίας τους καθώς και κατά πόσο τηρούνται οι όροι της συγκατάθεσης των χρηστών. Τέλος, προτείνονται μέτρα αντιμετώπισης των προβλημάτων που ανακύπτουν
description: Social networking services have become particularly popular nowadays by creating online communities with people sharing common interests and activities. Such services operate virtually and offer different ways of communicating and interacting with their registered users through their personal profiles. Undoubtedly, the social media comprise a new form of communication and socializing, especially among young people as well as other target groups. At the same time, however, these services add a new dimension to the concept of "personal space", creating serious concerns about the violation of their users’ privacy, since their personal data are published on the Internet in an unprecedented way and quantity. The following dissertation is an attempt to interpret users' consent as a legitimate reason for processing their personal data. Furthermore, it clarifies the nature of the consent, suggesting that it must be provided according to the GTPR and under what conditions it should be carried out, as well as elaborates on the consequences of the lack of consent and explains the way it differs between minors and adults. The issues consequently discussed include the most popular social media tools, the way they function as well as whether the terms of user consent are respected. Finally, measures are proposed in order to address the problems that may arise
Quantitative Characterization of Combinatorial Transcriptional Control of the Lactose Operon of E. coli
Creators: name: Kuhlman, T. E.
name: Zhang, Z.
name: Saier, M. H.
name: Hwa, T.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Molecular Networks (q-bio.MN)
subject: FOS: Biological sciences

description: It is the goal of systems biology to understand the behavior of the whole in terms of the knowledge of the parts. This is hard to achieve in many cases due to the difficulty of characterizing the many constituents and their complex web of interactions involved in a biological system. The lac promoter of E. coli offers a possibility of confronting system-leve properties of transcriptional regulation with the known biochemistry of the molecular constituents and their mutual interactions. Such confrontations can reveal previously unknown constituents and interactions, as well as offering new insight into how the components work together as a whole. Here we study the combinatorial control of the lac promoter by the regulators LacR and CRP. A previous in vivo study [Setty et al., PNAS 100: 7702-7 (2003)] found gross disagreement between the observed promoter activites and the expected behavior based on the known molecular mechanisms. We repeated the study by identifying and removing several extraneous factors which significantly modulated the expression of the lac promoter. Through quantitative, systematic characterization of promoter activity for a number of key mutants and guided by the thermodynamic model of transcriptional gene regulation, we are able to account for the combinatorial control of the lac promoter quantitatively, in terms of a cooperative interaction between CRP and LacR-mediated DNA looping. Specifically, our analysis indicates that the sensitivity of the inducer response results from LacR-mediated DNA looping, which is significantly enhanced by CRP.
Electromagnetic neutrino properties: new constraints and new effects
Creators: name: Studenikin, Alexander
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The electromagnetic properties of neutrinos have attracted considerable attention from researchers for many decades (see [1] for a review). However, until recently, there was no indication in favour of nonzero electromagnetic properties of neutrinos either from laboratory experiments with ground-based neutrino sources or from observations of astrophysical neutrino fluxes. The situation changed after the XENON collaboration reported [2] results of the search for new physics with low-energy electronic recoil data recorded with the XENON1T detector. The results show an excess of events over the known backgrounds in the recoil energy which, as one of the possible explanations, admit the presence of a sizable neutrino magnetic moment, the value of which is of the order of the existing laboratory limitations. In these short notes we give a brief introduction to neutrino electromagnetic properties and focus on the most important constraints on neutrino magnetic moments, charge radii and millicharges from the terrestrial experiments and astrophysical considerations. The promising new possibilities for constraining neutrino electromagnetic properties in future experiments are also discussed.
description: 6 pages in LaTex, based on the presentation at the 40th International Conference on High Energy Physics (ICHEP 2020), Prague, Czech Republic, 28 July - 6 August 2020. arXiv admin note: substantial text overlap with arXiv:1912.12497, arXiv:1912.12501
Κατασκευές της προσφυγικής «κρίσης» στον Κοινοβουλευτικό Διάλογο για την Ασφάλεια: Ρητορικές Χρήσεις και Κοινωνικοπολιτικές Συνέπειες
Creators: name: Αναγνωστοπούλου, Δήμητρα Αθανασίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2019
Subjects: προσφυγική «κρίση»
ασφάλεια
πρακτικές διακυβέρνησης
refugee "crisis"
security
governmentality

description: Στην παρούσα εργασία μελετώνται οι κατασκευές της «προσφυγικής κρίσης», οι ρητορικές τους χρήσεις και οι δυνητικές ευρύτερες κοινωνικοπολιτικές τους συνέπειες. Για το σκοπό αυτό αναλύθηκαν με βάση τις αρχές της Ρητορικής Ψυχολογίας και της Κριτικής Κοινωνικής Λογοψυχολογίας κείμενα από την προ ημερησίας διατάξεως συζήτηση που διεξήχθη στη Βουλή με θέμα την «Ασφάλεια των πολιτών» την 20η Απριλίου 2016. Η ανάλυση επικεντρώθηκε στα αποσπάσματα λόγου εκπροσώπων της Κυβέρνησης και της Αξιωματικής Αντιπολίτευσης. Από αυτήν τη διαδικασία προέκυψαν τρεις θεματικοί άξονες στη βάση των οποίων αναπτύχθηκε η επιχειρηματολογία των δύο κομμάτων. Ο πρώτος αφορά στην κατασκευή της έννοιας της «κρίσης» με όρους αριθμητικούς ή ποσοτικούς, γενικότερα. Ο δεύτερος αφορά στις κατασκευές των πρακτικών διακυβέρνησης που εφαρμόστηκαν σχετικά με το προσφυγικό από την Κυβέρνηση, αφ’ ενός, με κριτήρια ασφάλειας και οικονομικά, αφ’ ετέρου, με όρους ρεαλισμού και ανθρωπισμού. Ο τρίτος αφορά στη σύνδεση της «προσφυγικής κρίσης» με την έννοια της ασφάλειας και της διακινδύνευσης. Τα αποτελέσματα της ανάλυσης συζητήθηκαν αναφορικά με τη χρήση των ρητορικών κατασκευών της έννοιας της «κρίσης» στον πολιτικό λόγο για το προσφυγικό, ιδιαίτερα τη σύνδεση της «προσφυγικής κρίσης» με την ασφάλεια, καθώς και τις κοινωνικοπολιτικές προεκτάσεις της σύνδεσης αυτής ως προς τις πρακτικές διακυβέρνησης που νομιμοποιούνται μέσω της «εκλογίκευσης»
description: The present study explores the constructions of refugee "crisis" in parliamentary discourse, their rhetorical use in regards to security and possible sociopolitical implications. The analytic corpus consists of the proceedings of the pre-agenda debate on the subject "Citizen’s Security" which took place on the 20th of April 2016. Adopting an approach informed by the rhetorical psychology and critical discursive social psychology, the analysis focused on the discourses of the Government’s and the Opposition’s parliamentarians and indicated that their arguments articulated around three main thematic categories. The first one regards the constructions of "crisis" concept and "refugee crisis" in numerical and quantitative terms. The second one concerns the constructions of the governmental means applied to "refugee crisis" either on the basis of economic criteria and security or in terms of realism and humanitarianism. The third thematic category includes arguments constructing "refugee crisis" as a "security" or "risk management" issue. Findings are discussed in relation to the uses of "crisis" as rhetorical construction in the political debate regarding refugee issues, especially the securitization of "refugee crisis" and the sociopolitical implications in regards to legitimating governmentality of refugees on the basis of rationalization
A Cohort Study of Entry Level Librarians and the Academic Job Search
Creators: name: Reed, Jason B.
name: Carroll, Alexander J.
name: Jahre, Benjamin
Publisher: name: Digital Repository at the University of Maryland
Year: 2015
Subjects: entry level academic librarians
LIS graduates
academic job search process
LIS education
academic libraries

description: Previous studies have examined the challenges faced by those seeking a professional position within academic libraries, as well as the skills and qualities preferred by Library and Information Science (LIS) employers. However, less attention has been paid to the common approaches, characteristics and experiences of first-time job seekers who successfully find employment within academic libraries. This paper presents the findings of a cohort study that investigated the academic job search process for entry level professionals. The cohort was comprised of graduates of the University of North Carolina at Chapel Hill’s School of Information and Library Science (UNC SILS) who completed their degrees between May 2011 and May 2013, and who were working within academic libraries when the study was conducted. The study used in-depth, qualitative interviews to ask participants to share the experiences of their initial job search. Topics addressed within these interviews included: supplementing classroom training with relevant library experience, finding job postings, creating application materials that capture a search committee’s attention, preparing for phone and on-campus interviews, and negotiating a job offer. The results of this study will help LIS students, recent graduates, and others seeking their first professional position in an academic library improve their candidacies by drawing on the collective experiences of this cohort of recent graduates. The results will also be useful for new library professionals, hiring officials, and LIS educators who mentor LIS students by providing insights in how candidates approach and prepare for the application and interview processes.
Discrete path integral approach to the trace formula for regular graphs
Creators: name: Mnev, Pavel
Publisher: name: arXiv
Year: 2006
Subjects: subject: Mathematical Physics (math-ph)
subject: Combinatorics (math.CO)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We give a new proof of the trace formula for regular graphs. Our approach is inspired by path integral approach in quantum mechanics, and calculations are mostly combinatorial.
description: 8 pages, no figures
Ultra-stable Free-Space Laser Links for a Global Network of Optical Atomic Clocks
Creators: name: Gozzard, David R.
name: Howard, Lewis A.
name: Dix-Matthews, Benjamin P.
name: Karpathakis, Skevos
name: Gravestock, Charles
name: Schediwy, Sascha W.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: A global network of optical atomic clocks will enable unprecedented measurement precision in fields including tests of fundamental physics, dark matter searches, geodesy, and navigation. Free-space laser links through the turbulent atmosphere are needed to fully exploit this global network, by enabling comparisons to airborne and spaceborne clocks. We demonstrate frequency transfer over a 2.4 km atmospheric link with turbulence similar to that of a ground-to-space link, achieving a fractional frequency stability of 6.1E-21 in 300 s of integration time. We also show that clock comparison between ground and low Earth orbit will be limited by the stability of the clocks themselves after only a few seconds of integration. This significantly advances the technologies needed to realize a global timescale network of optical atomic clocks.
description: 18 pages, 9 figures
Identification and cloning of the genes required for production of the adhesive holdfast organelle of the marine Caulobacter MCS6
Creators: name: Yun, Chanyoung
Publisher: name: University of British Columbia
Year: 2008

description: Caulobacters produce an organelle called a holdfast which allows the bacterium to firmly attach to surfaces. Tn5 insertion mutagenesis was used to identify genes affecting holdfast production or function in the marine strain MCS6. 12,000 Tn5- insertion mutants were produced and screened for adhesion defects by a newly developed assay involving the growth of cultures in polystyrene microtitre dish wells and detection of attached cells by staining with crystal violet. Among adhesion-defective mutants, those with multiple polar (pleiotropic) defects were excluded and the remainder were examined for the ability of Wheat Germ agglutinin to label the holdfast region, a feature of the wild-type holdfast. 41 mutants were isolated that produced no detectable or synthesized a reduced amount of holdfast. Southern blot and pulsed field gel electrophoresis (PFGE) analyses of these mutants indicated 11 unique sites of Tn5 insertion, clustered in three regions of the genome. In addition, 71 mutants were found that did not adhere to polystyrene or adhered poorly yet still produced a holdfast organelle as judged by Wheat Germ agglutinin binding. Southern blot and PFGE analyses of 15 of these mutants showed eight Tn5 insertion sites clustered in two regions of the genome. Glass slides treated with silane chemicals (producing surfaces with varying degrees of hydrophobicity and/or hydrophilicity) were used to attempt characterization of this phenotype; unexpectedly no generic pattern of differences in binding was found between the mutants and wild-type Caulobacters. In particular, no reduction in the ability of the mutants to bind to hydrophobic surfaces was noted; this might have been expected considering the inability to bind polystyrene. As a means of confirming their unique location and character of each genomic region, representatives of all 5 clusters were chosen and the Tn5-interrupted regions were cloned. The gene segments obtained were in turn used as probes to identify corresponding holdfast-related chromosome regions in a cosmid library of wild-type MCS6 DNA. Positive cosmid clones were transferred into the Tn5 -derived holdfast-defective mutants by conjugation. Among 6 groups tested, 4 of them showed almost full complementation, one showed poor complementation; for one group no complementation was obtained. In sum, several genetic regions responsible for holdfast mediated attachment in marine Caulobacter MCS6 were identified by Tn5 insertion mutagenesis. They were located at several discrete locations on the genome and, via the cloned segments obtained, are now accessible for further genetic analysis.
Star Cluster Demographics. I. A General Framework and Application to the Antennae Galaxies
Creators: name: Whitmore, Bradley C.
name: Chandar, Rupali
name: Fall, S. Michael
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present a framework for understanding the demographics of star cluster systems, and develop a toy model which incorporates a universal initial power law mass function, selected formation histories, selected disruption laws, and a convolution with common artifacts and selection effects found in observational data. The model confirms that the observed correlation between the brightest young cluster in a galaxy and the total number of young clusters can be understood as a statistical size-of-sample effect, rather than a difference in the physical process responsible for the formation of the clusters. A comparison is made between different cluster disruption laws and it is shown that the break in the dN/dτdiagram used to determine the parameters in the Boutloukos & Lamers model may be produced by incompleteness near the breakpoint. A model of the Antennae galaxies is developed and compared with the observational data. An important component of our model is the use of a "two-stage" disruption process, with a very high "infant mortality" rate for the clusters with ages less than \approx10^8 yrs (i.e., roughly 80%-90% are lost each factor of ten in time, τ, independent of mass), and two-body relaxation, which becomes the dominant disruption mechanism at older ages, preferentially removing the lower mass clusters. Hence, in our model, stars from the dissolved clusters form the field population. We note that a 90% infant mortality rate for each factor of ten in τ(i.e., dN/dτ\propto τ^{-1}) is consistent with all measured young cluster populations, including those in the Antennae, Small Magellanic Cloud, and the Milky Way.
description: 49 pages, 15 figures, 2 tables; accepted for publication in AJ. V2 corrects formatting in references
1-loop matching of a thermal Lorentz force
Creators: name: Laine, M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: Studying the diffusion and kinetic equilibration of heavy quarks within a hot QCD medium profits from the knowledge of a coloured Lorentz force that acts on them. Starting from the spatial components of the vector current, and carrying out two matching computations, one for the heavy quark mass scale ($M$) and another for thermal scales ($\sqrt{MT}$, $T$), we determine 1-loop matching coefficients for the electric and magnetic parts of a Lorentz force. The magnetic part has a non-zero anomalous dimension, which agrees with that extracted from two other considerations, one thermal and the other in vacuum. The matching coefficient could enable a lattice study of a colour-magnetic 2-point correlator.
description: 21 pages. v2: clarifications added
Probing the ISM Near Star Forming Regions with GRB Afterglow Spectroscopy: Gas, Metals, and Dust
Creators: name: Prochaska, Jason X.
name: Chen, Hsiao-Wen
name: Dessauges-Zavadsky, Miroslava
name: Bloom, Joshua S.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We study the chemical abundances of the interstellar medium surrounding high z gamma-ray bursts (GRBs) through analysis of the damped Lya systems (DLAs) identified in afterglow spectra. These GRB-DLAs are characterized by large HI column densities N(HI) and metallicities [M/H] spanning 1/100 to nearly solar, with median [M/H]>-1. The majority of GRB-DLAs have [M/H] values exceeding the cosmic mean metallicity of atomic gas at z>2, i.e. if anything, the GRB-DLAs are biased to larger metallicity. We also observe (i) large [Zn/Fe] values (>+0.6) and sub-solar Ti/Fe ratios which imply substantial differential depletion, (ii) large a/Fe ratios suggesting nucleosynthetic enrichment by massive stars, and (iii) low C^0/C^+ ratios (<10^{-4}). Quantitatively, the observed depletion levels and C^0/C^+ ratios of the gas are not characteristic of cold, dense HI clouds in the Galactic ISM. We argue that the GRB-DLAs represent the ISM near the GRB but not gas directly local to the GRB (e.g. its molecular cloud or circumstellar material). We compare these observations with DLAs intervening background quasars (QSO-DLAs). The GRB-DLAs exhibit larger N(HI) values, higher a/Fe and Zn/Fe ratios, and have higher metallicity than the QSO-DLAs. We argue that the differences primarily result from galactocentric radius-dependent differences in the ISM: GRB-DLAs preferentially probe denser, more depleted, higher metallicity gaslocated in the inner few kpc whereas QSO-DLAs are more likely to intersect the less dense, less enriched, outer regions of the galaxy. Finally, we investigate whether dust obscuration may exclude GRB-DLA sightlines from QSO-DLA samples; we find that the majority of GRB-DLAs would be recovered which implies little observational bias against large N(HI) systems.
description: 16 pages, 9 figures. Submitted to ApJ
Grammatical elicitation: Predicate focus, ergative extraction morphology, focused directionals
Creators: name: Sales, Henry
name: Wilbanks, Eric
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2021
Subjects: subject: mam

description: Includes short exploration of various conditions in which ergative extraction (-t) is expected but not observed, and an investigation of the possibility of focusing directional elements. The last quarter of the audio file is missing due to technical error.
Quantum-access security of the Winternitz one-time signature scheme
Creators: name: Majenz, Christian
name: Manfouo, Chanelle Matadah
name: Ozols, Maris
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Cryptography and Security (cs.CR)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Quantum-access security, where an attacker is granted superposition access to secret-keyed functionalities, is a fundamental security model and its study has inspired results in post-quantum security. We revisit, and fill a gap in, the quantum-access security analysis of the Lamport one-time signature scheme (OTS) in the quantum random oracle model (QROM) by Alagic et al.~(Eurocrypt 2020). We then go on to generalize the technique to the Winternitz OTS. Along the way, we develop a tool for the analysis of hash chains in the QROM based on the superposition oracle technique by Zhandry (Crypto 2019) which might be of independent interest.
description: 45 pages. v2: Full version accompanying published version, various improvements
Populism: a shapeshifting ghost
Creators: name: Yaman, Ilker Ahmed
Publisher: name: Aristotle University of Thessaloniki
Year: 2019
Subjects: Λαϊκισμός
Ιδεολογία
Discourse
Populism
Idelology

description: Of all “-isms” in the political science lexicon and in the journalistic discourse, populism easily distinguishes itself from others. We usually know what’s liberalism, socialism or feminism and we are able to identify who belongs to their ideological communities. However, when it comes to populism, confusion arises to pin down the concept. Neither scholarly consensus exist for the definition of populism, nor there is a common agreement on the ideological ingredients derived from the populist perspective. Closely related, populism is often asserted pejoratively and used extremely liberally. This is to the extent that populism does not get into a debate as to what the core meanings and theories of the concept are. To be more precise, the concept of populism has long been in an intellectual torture chamber from which it could not have managed to escape yet. This is an interesting phenomenon because populism was first introduced to the vocabulary as a self-descriptive term used by the adherents of the populist movement in the United States in the late 1800s. Almost at the same time, through in a different continent, an analogous political movement emerged onto stage in Russia and the members of this ideological community called themselves ‘narodniks’. Today, there is no doubt about the term ‘narodnik’ serving as a Russian equivalent of ‘populist’ and ‘narodchivesto’ that translate as ‘populism’. Having this knowledge in mind, a prominent question arises; “how is it possible that populism has become a pejorative concept?” The answer to this question is the consideration of this dissertation. It first undertakes a profound comparative analysis of the ideologies of these two political movements. Remaining in the realm of ideological debates, it then identifies the roles of intellectuals in the pejoration of the concept of populism. With these findings, the present dissertation hopes to give an accurate account to those who dedicate their endeavors to save populism from its conceptual slipperiness and assign it a genuine meaning.
description: Ο λαϊκισμός είναι μια έννοια που έχει δημιουργήσει μεγάλη σύγχυση στην κατανόηση της. Δεν υπάρχει επιστημονική συναίνεση για τον ορισμό του λαϊκισμού, ούτε υπάρχει κοινή συμφωνία για τα ιδεολογικά συστατικά που προέρχονται από τη λαϊκιστική προοπτική. Σε στενό συσχετισμό, ο λαϊκισμός συχνά χρησιμοποιείται υποτιμητικά και με έντονο φιλελεύθερο περιεχόμενο. Η παρούσα διατριβή ελπίζει να δώσει έναν ακριβή απολογισμό σε εκείνους που αφιερώνουν τις προσπάθειές τους για να σώσουν τον λαϊκισμό από την εννοιολογική ολίσθηση του και να του αναθέσουν ένα γνήσιο νόημα.
GRBs Neutrinos as a Tool to Explore Quantum Gravity induced Lorentz Violation
Creators: name: Jacob, Uri
name: Piran, Tsvi
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Lorentz Invariance Violation (LIV) arises in various quantum-gravity theories. As the typical energy for quantum gravity is the Planck mass, $M_{pl}$, LIV will, most likely, be manifested at very high energies that are not accessible on Earth in the foreseeable future. One has to turn to astronomical observations. Time of flight measurement from different astronomical sources set current limits on the energy scale of possible LIV to $> 0.01 M_{pl}$ (for n=1 models) and $> 10^{-9} M_{pl}$ (for n=2). According to current models Gamma-Ray Bursts (GRBs) are accompanied by bursts of high energy ($\gsim 100$TeV) neutrinos. At this energy range the background level of currently constructed neutrino detectors is so low that a detection of a single neutrino from the direction of a GRB months or even years after the burst would imply an association of the neutrino with the burst and will establish a measurement of a time of flight delay. Such time of flight measurements provide the best way to observe (or set limits) on LIV. Detection of a single GRB neutrino would open a new window on LIV and would improve current limits by many orders of magnitude.
Missing Molecular Hydrogen and the Physical Conditions of GRB Host Galaxies
Creators: name: Tumlinson, Jason
name: Prochaska, Jason X.
name: Chen, Hsiao-Wen
name: Dessauges-Zavadsky, Miroslava
name: Bloom, Joshua S.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We examine the abundance of molecular hydrogen (H2) in the spectra of gamma ray burst afterglows (GRBs). In nearby galaxies H2 traces the cold neutral medium (CNM) and dense molecular star-forming interstellar gas. Though H2 is detected in at least half of all sightlines towards hot stars in the Magellanic Clouds and in ~25% of damped Lya systems toward quasars, it is not detected in any of the five GRB environments with a similar range of neutral hydrogen column and metallicity. We detect no vibrationally-excited H2 that would imply the GRB itself has photodissociated its parent molecular cloud, so such models are ruled out unless the parent cloud was
description: 7 pg, 3 color figures. Submitted to ApJ
Phases of supersolids in confined dipolar Bose-Einstein condensates
Creators: name: Zhang, Yong-Chang
name: Pohl, Thomas
name: Maucher, Fabian
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: Dipolar Bose-Einstein condensates represent a powerful platform for the exploration of quantum many-body phenomena arising from long-range interactions. A series of recent experiments has demonstrated the formation of supersolid states of matter. Subsequent theoretical works have shown that quantum fluctuations can affect the underlying phase transition and may lead to the emergence of supersolids with various lattice structures in dipolar condensates. In this work we explore the signatures of such different geometries in confined finite condensates. In addition to previously found triangular lattices, our analysis reveals a rich spectrum of states, from honeycomb patterns and ring structures to striped supersolids. By optimizing relevant parameters we show that transitions between distinct supersolids should be observable in current experiments.
description: 8 pages, 8 figures