cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
3. Condorcet, Kelsen et la règle de majorité
Creators: name: Pasquino, Pasquale
Publisher: name: GISI - UniTO
Year: 2018

description: Il sera question ici – entre histoire de la pensée, droit constitutionnel et théorie politique – de la règle ou du principe de majorité en tant que règle d’arrêt, en entendant par cette expression (que je dois à mon collègue Philippe Urfalino) la règle qui clôt un processus de délibération collective et qui aboutit à une décision laquelle s’impose au groupe concerné par celle-ci. Si l’on discute de règles d’arrêt, on peut commencer par la règle de majorité: 50%+1, celle dont on a le plus souvent discuté. Je vais m’occuper de cette question en proposant le commentaire de deux textes célèbres (l'un de Condorcet, l'autre de Kelsen) qui portent sur la règle de majorité et sur ses propriétés; entre autres car ces deux textes, en même temps importants et difficiles, sont l’objet d’interprétations pas toujours convaincantes.
description: Journal of Interdisciplinary History of Ideas, Vol 7, No 14 (2018)
Character of the structural and magnetic phase transitions in the parent and electron doped BaFe2As2 compounds
Creators: name: Kim, M. G.
name: Fernandes, R. M.
name: Kreyssig, A.
name: Kim, J. W.
name: Thaler, A.
name: Bud'ko, S. L.
name: Canfield, P. C.
name: McQueeney, R. J.
name: Schmalian, J.
name: Goldman, A. I.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We present a combined high-resolution x-ray diffraction and x-ray resonant magnetic scattering (XRMS) study of as-grown BaFe2As2. The structural/magnetic transitions must be described as a two-step process. At T_S = 134.5 K we observe the onset of a second-order structural transition from the high-temperature paramagnetic tetragonal structure to a paramagnetic orthorhombic phase, followed by a discontinuous step in the structural order parameter that is coincident with a first-order antiferromagnetic (AFM) transition at T_N = 133.75 K. These data, together with detailed high-resolution x-ray studies of the structural transition in lightly doped Ba(Fe{1-x}Co{x})2As2 and Ba(Fe{1-x}Rh{x})2As2 compounds, show that the structural and AFM transitions do, in fact, occur at slightly different temperatures in the parent BaFe2As2 compound, and evolve towards split secondorder transitions as the doping concentration is increased. We estimate the composition for the tricritical point for Co-doping and employ a mean-field approach to show that our measurements can be explained by the inclusion of an anharmonic term in the elastic free energy and magneto-elastic coupling in the form of an emergent Ising-nematic degree of freedom.
description: 10 pages, 11 figures; accepted for publication in Phys. Rev. B
5. Book Reviews
Creators: name: Soliani, Riccardo
name: Randone, Lucia
name: Pasini, Enrico
Publisher: name: GISI - UniTO
Year: 2018

description: Reviews of Pisanelli, Condorcet et Adam Smith. Réformes économiques et progrés social au siècle des Lumières, 2018; Matino, Klestinec eds., Art, Faith and Medicine in Tintoretto’s Venice, 2018; Holmberg, The Maurists’ Unfinished Encyclopedia, 2017.
description: Journal of Interdisciplinary History of Ideas, Vol 7, No 14 (2018)
Schulleitungsmonitor Schweiz 2021 – Kurzbericht
Creators: name: Tulowitzki, Pierre
name: Pietsch, Marcus
name: Berger, Jörg
name: Grigoleit, Ella
name: Sposato, Gloria
Publisher: name: Pädagogische Hochschule FHNW
Year: 2022
Subjects: Schulleitung
Schulentwicklung

description: Schulleitungen spielen eine grosse Rolle für die Organisation und Entwicklung von Schulen. Gleichzeitig gibt es kaum gesicherte Erkenntnisse aus der Schweiz zu dieser zentralen Position: Warum ergreifen die Schulleitungen diese Tätigkeit? Was (de)motiviert sie in ihrem Beruf? Welche Rolle spielen individuelle und strukturelle Bedingungsfaktoren für ihr Engagement? Wie gelingt ihnen der Spagat zwischen Stabilität und Veränderung? Wie gestaltet sich die Zusammenarbeit im Kollegium? Erleben sie sich als pädagogisch wirksam? Um die oben genannten Fragen zu beantworten, wurde der Schulleitungsmonitor Schweiz ins Leben gerufen. Der Schulleitungsmonitor Schweiz ist ein Kooperationsprojekt vom VSLCH, CLACESO und der PH FHNW, welches von der HEP Vaud unterstützt wird. Ziel ist es, Erkenntnisse darüber zu erhalten, wer die Schulleitenden sind, wie es ihnen geht, wie sie Schulbetrieb, pädagogische Arbeit und Schülerinnen und Schülern unterstützen und wie sich ihre Profession entwickelt.
Transiting exoplanets from the CoRoT space mission XIV. CoRoT-11b: a transiting massive "hot-Jupiter" in a prograde orbit around a rapidly rotating F-type star
Creators: name: Gandolfi, D.
name: Hébrard, G.
name: Alonso, R.
name: Deleuil, M.
name: Guenther, E. W.
name: Fridlund, M.
name: Endl, M.
name: Eigmüller, P.
name: Csizmadia, Sz.
name: Havel, M.
name: Aigrain, S.
name: Auvergne, M.
name: Baglin, A.
name: Barge, P.
name: Bonomo, A. S.
name: Bordé, P.
name: Bouchy, F.
name: Bruntt, H.
name: Cabrera, J.
name: Carpano, S.
name: Carone, L.
name: Cochran, W. D.
name: Deeg, H. J.
name: Dvorak, R.
name: Eislöffel, J.
name: Erikson, A.
name: Ferraz-Mello, S.
name: Gazzano, J. -C.
name: Gibson, N. P.
name: Gillon, M.
name: Gondoin, P.
name: Guillot, T.
name: Hartmann, M.
name: Hatzes, A.
name: Jorda, L.
name: Kabath, P.
name: Léger, A.
name: Llebaria, A.
name: Lammer, H.
name: MacQueen, P. J.
name: Mayor, M.
name: Mazeh, T.
name: Moutou, C.
name: Ollivier, M.
name: Pätzold, M.
name: Pepe, F.
name: Queloz, D.
name: Rauer, H.
name: Rouan, D.
name: Samuel, B.
name: Schneider, J.
name: Stecklum, B.
name: Tingley, B.
name: Udry, S.
name: Wuchterl, G.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: The CoRoT exoplanet science team announces the discovery of CoRoT-11b, a fairly massive hot-Jupiter transiting a V=12.9 mag F6 dwarf star (M*=1.27 +/- 0.05 Msun, R*=1.37 +/- 0.03 Rsun, Teff=6440 +/- 120 K), with an orbital period of P=2.994329 +/- 0.000011 days and semi-major axis a=0.0436 +/- 0.005 AU. The detection of part of the radial velocity anomaly caused by the Rossiter-McLaughlin effect shows that the transit-like events detected by CoRoT are caused by a planet-sized transiting object in a prograde orbit. The relatively high projected rotational velocity of the star (vsini=40+/-5 km/s) places CoRoT-11 among the most rapidly rotating planet host stars discovered so far. With a planetary mass of mp=2.33+/-0.34 Mjup and radius rp=1.43+/-0.03 Rjup, the resulting mean density of CoRoT-11b (rho=0.99+/-0.15 g/cm^3) can be explained with a model for an inflated hydrogen-planet with a solar composition and a high level of energy dissipation in its interior.
description: 15 pages, 13 figures, accepted for publication in A&A
Edge States at the Interface between Monolayer and Bilayer Graphene
Creators: name: Hu, Zi-Xiang
name: Ding, Wenxin
Publisher: name: arXiv
Year: 2011
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The electronic property of monolayer-bilayer hybrid graphene with a zigzag interface is studied by both the Dirac equation and numerical calculation. There are two types of zigzag interface stacks. The dispersion and local density of states behave quit differently along the interface at the Fermi energy due to the different locations of the edge state. We hope our study can give some insights in the understanding of the transport and STM experiments.
description: 8 pages, 8 figures
Power line communications in vehicles : channel measurements and impedance matching networks
Creators: name: TaheriNejad, Nima
Publisher: name: University of British Columbia
Year: 2015

description: In today's Electric Vehicles (EVs) and conventional Combustion Engine Vehicles(CEVs), data communication between electronic control units is accomplished by sending communication signals over dedicated wires. The space requirement, weight, and installation costs for these wires can become significant, especially in electric vehicles of the future, which are highly sophisticated electronic systems. This has motivated research and development activities in the area of Vehicular Power Line Communication (VPLC). VPLC systems reuse power wires inside a vehicle for data communication purposes. Thus, they eliminate the need for extra wires dedicated to communication. However, there are several impediments to overcome in order to achieve a reliable and robust VPLC. Many of these challenges originate from inherent properties of current wirings in vehicles, which are not designed with communication in mind. Therefore, to develop suitable data transmission equipments, a good understanding of the communication channel characteristics is essential. Considering the importance of proper characterization as a first step towards the design and deployment of VPLC systems, in this work, we have tried to contribute to the available body of knowledge on channel characterization for VPLC in EVs and CEVs. As tangible contributions, we present methodology and results of two measurement campaigns in this thesis. The main outcomes of this part of our research are quantitative statements about Channel Transfer Functions and Access Impedance for two vehicles and discussions of our results in the context of VPLC system design. Building on the results of these measurements, an adaptive impedance matching system is designed to improve the power transmission between VPLC devices and the vehicular power line network, and consequently improve the Signal-to-Noise Ratio (SNR) of the communication system. The adaptive impedance matching system is first behaviorally described in VHDL-AMS and simulated using Cadence™ and then for each unit a circuit design compatible for implementation on an Integrated Circuit (IC) platform is suggested. Tested against the challenges of VPLC observed in our measurement campaigns, the proposed system proved to be capable of significantly improving the reliability of communication over power wires in vehicle.
Lukewarm black holes in quadratic gravity
Creators: name: Matyjasek, Jerzy
name: Zwierzchowska, Katarzyna
Publisher: name: arXiv
Year: 2011
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Perturbative solutions to the fourth-order gravity describing spherically-symmetric, static and electrically charged black hole in an asymptotically de Sitter universe is constructed and discussed. Special emphasis is put on the lukewarm configurations, in which the temperature of the event horizon equals the temperature of the cosmological horizon.
1 - Editorial
Creators: name: Albertone, Manuela
Publisher: name: GISI - UniTO
Year: 2018

description: Dans ce numéro très riche et varié, nos lecteurs n’hésiteront pas à trouver un fil rouge, qui représente l’esprit de notre revue : Condorcet. L’interdisciplinarité de sa réflexion rend sa rencontre une évidence et une nécessité pour les spécialistes des idées du XVIIIe siècle. Le Condorcet économiste, étudié par une jeune chercheuse de la pensée économique, est discuté dans la section des comptes-rendus. Le Condorcet, théoricien de la science sociale à l’époque des Lumières, est analysé par un réputé philosophe la politique, dans un article, qui renvoie à l’actualité des considérations sur la nécessité et les imperfections du principe de majorité.

Le prochain numéro présentera les résultats du séminaire qui a eu lieu à l’Université de Turin le 17 octobre 2018, en collaboration aussi avec le GISI, sur la représentation des entités naturelles. Il offrira le dialogue entre un juriste, un historien et un philosophe.
description: Journal of Interdisciplinary History of Ideas, Vol 7, No 14 (2018)
Derivation of an integral of Boros and Moll via convolution of Student t-densities
Creators: name: Berg, Christian
name: Vignat, Christophe
Publisher: name: arXiv
Year: 2010
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics
subject: 33C05, 60E07

description: We show that the evaluation of an integral considered by Boros and Moll is a special case of a convolution result about Student t-densities obtained by the authors in 2008.
A LEARNING AUTOMATA-BASED APPROACH FOR DYNAMIC LOAD BALANCING IN MANET
Creators: name: Asgaria, Maryam
Publisher: name: TUENGR Group
Year: 2019
Subjects: Load balancing
MANET
Optimal route
Node energy
Energy saving
MANET simulation.

description: International Transaction Journal of Engineering, Management, & Applied Sciences & Technologies, 10, 3, 319-328
C-GOALS: Chandra observations of a complete sample of luminous infrared galaxies from the IRAS Revised Bright Galaxy Survey
Creators: name: Iwasawa, K.
name: Sanders, D. B.
name: Teng, Stacy H.
name: U, Vivian
name: Armus, L.
name: Evans, A. S.
name: Howell, J. H.
name: Komossa, S.
name: Mazzarella, J. M.
name: Petric, A. O.
name: Surace, J. A.
name: Vavilkin, T.
name: Veilleux, S.
name: Trentham, N.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present X-ray data for a complete sample of 44 luminous infrared galaxies (LIRGs), obtained with the Chandra X-ray Observatory. These are the X-ray observations of the high luminosity portion of the Great Observatory All-sky LIRG Survey (GOALS), which includes the most luminous infrared selected galaxies, log (Lir/Lsun) > 11.73, in the local universe, z < 0.088. X-rays were detected from 43 out of 44 objects, and their arcsec-resolution images, spectra, and radial brightness distributions are presented. With a selection by hard X-ray colour and the 6.4 keV iron line, AGN are found in 37% of the objects, with higher luminosity sources more likely to contain an AGN. These AGN also tend to be found in late-stage mergers. The AGN fraction would increase to 48% if objects with mid-IR [Ne V] detection are included. Double AGN are clearly detected only in NGC 6240 among 24 double/triple systems. Other AGN are found either in single nucleus objects or in one of the double nuclei at similar rates. Objects without conventional X-ray signatures of AGN appear to be hard X-ray quiet, relative to the X-ray to far-IR correlation for starburst galaxies, as discussed elsewhere. Most objects also show extended soft X-ray emission, which is likely related to an outflow from the nuclear region, with a metal abundance pattern suggesting enrichment by core collapse supernovae, as expected for a starburst.
description: Accepted for publication in A&A, 30 pages, 15 figures, Large PDF file (~8 MB) of extensive image figures can be downloaded from http://goals.ipac.caltech.edu/publications.html
Rate of Convergence and Tractability of the Radial Function Approximation Problem
Creators: name: Fasshauer, Gregory E.
name: Hickernell, Fred J.
name: Woźniakowski, Henryk
Publisher: name: arXiv
Year: 2010
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: 65D15, 68Q17, 41A25, 41A63

description: This article studies the problem of approximating functions belonging to a Hilbert space $H_d$ with an isotropic or anisotropic Gaussian reproducing kernel, $$ K_d(\bx,\bt) = \exp\left(-\sum_{\ell=1}^dγ_\ell^2(x_\ell-t_\ell)^2\right) \ \ \ \mbox{for all}\ \ \bx,\bt\in\reals^d. $$ The isotropic case corresponds to using the same shape parameters for all coordinates, namely $γ_\ell=γ>0$ for all $\ell$, whereas the anisotropic case corresponds to varying shape parameters $γ_\ell$. We are especially interested in moderate to large $d$.
A Global Study of the Behaviour of Black Hole X-ray Binary Discs
Creators: name: Dunn, Robert
name: Fender, Rob
name: Koerding, Elmar
name: Belloni, Tomaso
name: Merloni, Andrea
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We investigate the behaviour of the accretion discs in the outbursts of the low-mass black-hole X-ray binaries (BHXRB), an overview of which we have presented previously. Almost all of the systems in which there are sufficient observations in the most disc dominated states show a variation of the disc luminosity with temperature close to L ~\propto T^4. This in turn implies that in these states, the disc radius, R_in, and the colour correction factor, f_col, are almost constant. Deviations away from the T^4 law are observed at the beginning and end of the most disc dominated states, during the intermediate states. Although these could be explained by an inward motion of the accretion disc, they are more likely to be the result of an increase in the value of f_col as the disc fraction decreases. By comparing the expected and observed disc luminosities, we place approximate limits on the allowed distances and masses of the BHXRB system. In a number of cases, the measured distances and masses of the BHXRB system indicate that it is possible that the black hole may be spinning.
description: Accepted for publication in MNRAS, 28 pages, 5 Figures, 4 Tables. If you are interested in using any of the data in this and the previous paper, then please contact the authors
Caloric restriction in the context of reduced insulin
Creators: name: Dionne, Derek Alcide
Publisher: name: University of British Columbia
Year: 2015

description: Therapeutic benefits of caloric restriction (CR) on clinical outcomes in the treatment of neurodegenerative disease, cancer, cardiovascular disease, and diabetes have been found. Studies indicate the positive health outcomes produced by CR may involve cellular nutrient-sensing pathways including insulin/insulin-like growth factor 1 signalling. CR has been reported to have significant effects on glucose metabolism and body composition: lowering fasting blood glucose and insulin, improving glucose tolerance, insulin sensitivity and decreasing energy expenditure and body fat. However, it is not clear which, if any, of the effects of CR are due to the lowering of circulating insulin. To determine which CR effects are a function of circulating insulin-dependent mechanisms we placed female Ins1+/-:Ins2-/- mice and Ins1+/+:Ins2-/- littermate controls on either a chow diet ad libitum (AL) or on a CR diet where they were fed 60% of what their genotype-matched littermate controls ate daily. All mice were singly housed and CR mice fed at night. With the onset of CR, body mass in both genotypes fell and reached a new equilibrium by 20 weeks of age. As expected, mice on CR had lower fasting, fed plasma glucose and improved glucose tolerance when compared to AL controls. We observed a more rapid return to baseline glucose post-insulin injection in mice on CR and no difference in glucose-stimulated insulin secretion compared to AL littermates. CR was able to prevent an age-dependent decline in fasting insulin of Ins1+/-:Ins2-/- mice. Ins1+/+:Ins2-/- and Ins1+/-:Ins2-/- on CR also exhibited increased plasma leptin, glucose-dependent insulinotropic peptide, subcutaneous white and intrascapular brown adipose tissue size compared to the AL controls. The endocrine milieu created in these very low insulin mice appears to disrupt several well-established effects of CR on body composition, insulin and insulin sensitivity.
Double blinding-attack on entanglement-based quantum key distribution protocols
Creators: name: Adenier, Guillaume
name: Basieva, Irina
name: Khrennikov, Andrei Yu.
name: Ohya, Masanori
name: Watanabe, Noboru
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We propose a double blinding-attack on entangled-based quantum key distribution protocols. The principle of the attack is the same as in existing blinding attack except that instead of blinding the detectors on one side only, Eve is blinding the detectors of both Alice and Bob. In the BBM92 protocol, the attack allows Eve to get a full knowledge of the key and remain undetected even if Alice and Bob are using 100% efficient detectors. The attack can be easily extended to Ekert protocol, with an efficiency as high as 85.3%.
description: 4 pages
The targum (1876:Mar.)
Creators: name: No Name Supplied
Publisher: name: Targum Association
Year: 1876

description: Some University historians indicate that the Targum was first published as an annual in 1867, but of this we have no extant evidence. In January 1869, the Targum as we now know it, made its appearance as a monthly paper that concerned itself with student “literary contributions” and college news as well as serving as a vehicle for bringing news to alumni and the general public. The newspaper, which originally was for sale, varied in frequency over the years as did its title (The Targum, Rutgers Targum, Rutgers Daily Targum, and Daily Targum). The newspaper has continuously been published since 1869 with the exception of 19 months during the second world war, between February 1944 and October 1945. The Targum was published by the students of Rutgers College, and later Rutgers University—New Brunswick represented through the years as the Targum Association, Rutgers Targum Association, and Rutgers College Targum. As a student organization, the Targum operated under the oversight of the dean of students and student government but in October 1980, the Targum became an independent college paper.
Diffusion-induced bistability of driven nanomechanical resonators
Creators: name: Atalaya, J.
name: Isacsson, A.
name: Dykman, M. I.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We study nanomechanical resonators with frequency fluctuations due to diffusion of absorbed particles. The diffusion depends on the vibration amplitude through inertial effect. We find that, if the diffusion coefficient is sufficiently large, the resonator response to periodic driving displays bistability. The lifetime of the coexisting vibrational states scales exponentially with the diffusion coefficient. It also displays a characteristic scaling dependence on the distance to bifurcation points.
description: 4 pages, 3 figures
Nonlinear Schrödinger equation with unbounded or vanishing potentials: solutions concentrating on lower dimensional spheres
Creators: name: Bonheure, Denis
name: Di Cosmo, Jonathan
name: Van Schaftingen, Jean
Publisher: name: arXiv
Year: 2010
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: We study positive bound states for the semiclassical stationary nonlinear Schrödinger equation. We are especially interested in solutions which concentrate on a lower dimensional sphere. We adopt a purely variational approach which allows us to consider broader classes of potentials than those treated in previous works. For example, the potentials might be singular at the origin or vanish superquadratically at infinity.
Effects of elastic and inelastic NN scattering cross sections on pion-/pion+ ratios in heavy-ion collisions at intermediate energies
Creators: name: Yong, Gao-Chan
Publisher: name: arXiv
Year: 2010
Subjects: subject: Nuclear Theory (nucl-th)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Based on the isospin-dependent Boltzmann-Uehling-Uhlenbeck transport model and the scaling model according to nucleon effective mass, effects of elastic and inelastic NN scattering cross sections on pion-/pion+ in the neutron-rich reaction of Ca48+Ca48 at a beam energy of 400 MeV/nucleon are studied. It is found that cross-section effects of both NN elastic and inelastic scatterings affect Delta_1232, pion- and pion+ production, as well as the value of pion-/pion+.
description: 5 pages, 4 figures, in production
Hydrogen Fuel Cell Drones Against Battery Drones: Last Mile Delivery Perspective
Creators: name: Ragupathi, Jayasurya
Publisher: name: Purdue University Graduate School
Year: 2023
Subjects: Industrial engineering

description: Hydrogen fuel cells are an abundant and cleaner source of energy, making them an attractive option for powering transportation systems. Hydrogen fuel cell drones are a new type of drone that generates energy from fuel cells for flight and expels heat and water vapor as byproducts. Compared to battery-powered drones, hydrogen fuel cell drones have better endurance and payload capacity due to their higher energy density, making them more efficient for eCommerce delivery. This research compares the performance of hydrogen and battery delivery drones for both drone-only and truck-drone last-mile delivery systems. A mixed integer programming model has been formulated to minimize the total delivery time for small to medium customer instances using the two-echelon vehicle routing problem, where drones are launched from the truck to serve one or more customers. The study conducted a comparative analysis by varying different parameters of drones on multiple sets of customer instances from real-world data to determine the best choice of drones for different scenarios. The results of the analysis show that hydrogen fuel cell drones have significant delivery advantages over typical battery drones in terms of delivery time and efficiency. Additionally, a sensitivity analysis was conducted to demonstrate the impacts of different parameters on the objective function of the delivery systems.
Leibnizian, Robinsonian, and Boolean Valued Monads
Creators: name: Kutateladze, S. S.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Logic (math.LO)
subject: FOS: Mathematics
subject: 46S20, 03H05

description: This is an overview of the present-day versions of monadology with some applications to vector lattices and linear inequalities.
description: This is a talk prepared for the 20th St. Petersburg Summer Meeting in Mathematical Analysis, June 24-29, 2011
เจตคติของนักเรียนที่มีต่อการเรียนคณิตศาสตร์ โดยใช้โครงงาน: กรณีศึกษาโรงเรียน    บ้านสระประดู่ สังกัดสำนักงานเขตพื้นที่การศึกษาประถมศึกษาเพชรบูรณ์ เขต 3
Creators: name: โชติกา  กิตติกรณิศ
Publisher: name: Siam Technology College,Bangkok,Thailand
Year: 2018
Subjects: เจตคติของนักเรียน, การเรียนคณิตศาสตร์โดยใช้โครงงาน

description: วารสารนวัตกรรมและเทคโนโลยีการเรียนรู้วิทยาลัยเทคโนโลยีสยาม, 1, 2, 21
Modulation of insulin signalling and calcium homeostasis by endosomes in pancreatic beta-cells
Creators: name: Albrecht, Tobias
Publisher: name: University of British Columbia
Year: 2015

description: Disrupted pancreatic β-cell function is a key event in the pathogenesis of diabetes mellitus, a metabolic disorder resulting in elevated blood sugar levels. β-cells are responsible for the secretion of insulin, which promotes the uptake of blood glucose into peripheral tissue. Additionally, autocrine insulin signalling contributes to the maintenance of properly functioning β-cells. Upon insulin binding, the insulin receptor tyrosine kinase is activated and recruits insulin receptor substrates to its intracellular domain. These substrates can activate two major signalling branches, the Akt branch and the Ras/Erk branch. Both signalling branches are suggested to be involved in the maintenance of β-cell function and survival. Interestingly, results from experiments in adipose-like cell lines demonstrate, that endocytic vesicles can act as signalling hubs potentially directing insulin receptor signals between the Erk and Akt branches. Endosomes have also been suggested as organelles that are capable of buffering the rapid influx of calcium into β-cells following glucose stimulation thus avoiding calcium-induced β-cell death. These findings highlight endosomes as important organelles involved in the maintenance of β-cell function. This thesis examines the role of endosomes in autocrine insulin signalling and their involvement in calcium homeostasis. To observe the impact of endocytosis on autocrine insulin signalling, a novel fluorescent protein-labeled insulin receptor construct was developed and validated, revealing that tyrosine-phosphorylated caveolin-1 (Cav1) participates in insulin receptor internalization in β-cells. Remarkably, this process was found to bias insulin signalling towards the Erk branch in vitro and in vivo. As a functional consequence, reduction of Cav1 activity inhibited Erk signalling and was associated with increased β-cell apoptosis and decreased β-cell mass in mice lacking Cav1. The role of endosomes in β-cell calcium buffering was elucidated by creating a genetically encoded calcium sensor specifically localized to the lumen of endosomes and estimating calcium levels in defined endosome sub-populations. Indeed, endosomes accumulate calcium during glucose stimulation. Together, this work highlights endosomes as hubs for autocrine insulin signalling and contributors to the calcium homeostasis in the glucose response of β-cells.
Korovkin-type Theorems and Approximation by Positive Linear Operators
Creators: name: Altomare, Francesco
Publisher: name: arXiv
Year: 2010
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: 41A36, 46E05, 47B65

description: This survey paper contains a detailed self-contained introduction to Korovkin-type theorems and to some of their applications concerning the approximation of continuous functions as well as of L^p-functions, by means of positive linear operators. The paper also contains several new results and applications. Moreover, the organization of the subject follows a simple and direct approach which quickly leads both to the main results of the theory and to some new ones.
Trust-based spectrum and energy efficient collaborative spectrum sensing in cognitive radio networks
Creators: name: Mousavifar, Seyed Ali
Publisher: name: University of British Columbia
Year: 2015

description: Cognitive radio (CR) is a promising technology designed to improve the utilization of lightly used portions of the licensed spectrum while ensuring no undue interference with incumbent users (IUs). CR networks (CRNs) employ collaborative spectrum sensing (CSS) methods to discover spectrum opportunities. Spectrum and energy overhead costs play important roles in the efficiency of CSS in CRNs. A trust-based energy efficient CSS (EE-CSS) protocol is proposed. The protocol achieves energy efficiency by reducing the total number of sensing reports exchanged between the secondary users (SUs) and the fusion center (FC) in the presence of misbehaving SUs (MSUs). The steady-state and transient behavior of the average number of sensing reports and trust values of SUs in EE-CSS are analyzed and compared to those in traditional CSS (T-CSS). The impact of link outages on the global false alarm (FA) probabilities, ℚf, and the global miss detection (MD) probabilities, ℚmd, in EE-CSS and T-CSS is also analyzed. A centralized trust-based collusion attack strategy, in conjunction with integer linear programming, is proposed to compromise the decision of the FC in EE-CSS. The proposed strategy aims to attack only when it is likely to alter the decision of the FC. A mitigating scheme, based on the cross-correlation of sensing reports, is proposed to identify SUs with abnormal behaviors and to eliminate them from the decision making process at the FC. We also propose a trust-based spectrum and energy efficient CSS (SEE-CSS) scheme for the IEEE 802.22 standard wireless regional area network (WRAN). The proposed scheme aims to reduce the number of urgent coexistence situation (UCS) notifications transmitted from customer premise equipment (CPE) nodes to the WRAN base station (BS). The UCS messages inform the BS of the presence of active IUs on the licensed spectrum. We adapt the collusion attack strategy for SEE-CSS and apply the cross-correlation method at the BS to mitigate against the collusion attack. The results show that while ℚf and ℚmd are kept the same in T-CSS and SEE-CSS, the SEE-CSS protocol is more energy and spectrum efficient.
On the Eavesdropper's Correct Decision in Gaussian and Fading Wiretap Channels Using Lattice Codes
Creators: name: Ernvall-Hytönen, Anne-Maria
name: Hollanti, Camilla
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cryptography and Security (cs.CR)
subject: FOS: Computer and information sciences

description: In this paper, the probability of Eve the Eavesdropper's correct decision is considered both in the Gaussian and Rayleigh fading wiretap channels when using lattice codes for the transmission. First, it is proved that the secrecy function determining Eve's performance attains its maximum at y=1 on all known extremal even unimodular lattices. This is a special case of a conjecture by Belfiore and Solé. Further, a very simple method to verify or disprove the conjecture on any given unimodular lattice is given. Second, preliminary analysis on the behavior of Eve's probability of correct decision in the fast fading wiretap channel is provided. More specifically, we compute the truncated inverse norm power sum factors in Eve's probability expression. The analysis reveals a performance-secrecy-complexity tradeoff: relaxing on the legitimate user's performance can significantly increase the security of transmission. The confusion experienced by the eavesdropper may be further increased by using skewed lattices, but at the cost of increased complexity.
description: 5 pages. Submitted to ITW 2011
Scalar Moduli, Wall Crossing and Phenomenological Predictions
Creators: name: Bellucci, Stefano
name: Tiwari, Bhupendra Nath
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We present the scalar moduli stabilization from the perspective of the real intrinsic geometry. In this paper, we describe the physical nature of the vacuum moduli fluctuations of an arbitrary Fayet configuration. For finitely many abelian scalar fields, we show that the framework of the real intrinsic geometry investigates the mixing between the marginal and threshold vacua. Interestingly, we find that the phenomena of wall crossing and the search of the stable vacuum configurations, pertaining to $D$-term and $F$-term scalar moduli, can be accomplished for the abelian charges. For given vacuum expectation values of the moduli scalars, we provide phenomenological aspects of the vacuum fluctuations and phase transitions in the supersymmetry breaking configurations.
description: 9 pages, 1 figure, Keywords: Wall Crossings, Intrinsic Geometry, Moduli Configurations, Vacuum Stabilization, $D$-term potential, $F$-term potential, Fayet Model, Scalar Phenomenologies. PACS: String Theory: 11.25.-w; Gauge Theory: 47.20,Ky; Field Theory: 11.27.+d; Intrinsic Geometry: 2.40.-Ky; Algebraic Geometry: 2.10.-v; Statistical Fluctuation: 5.40.-a; Flow Instability: 47.29.Ky
Supernova Feedback Keeps Galaxies Simple
Creators: name: Chakraborti, Sayan
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Galaxies evolve continuously under the influence of self-gravity, rotation, accretion, mergers and feedback. The currently favored cold dark matter cosmological framework, suggests a hierarchical process of galaxy formation, wherein the present properties of galaxies are decided by their individual histories of being assembled from smaller pieces. However, recent studies have uncovered surprising correlations among the properties of galaxies, to the extent of forming a one-parameter set lying on a single fundamental line. It has been argued in the literature that such simplicity is hard to explain within the paradigm of hierarchical galaxy mergers. One of the puzzling results, is the simple linear correlation between the neutral hydrogen mass and the surface area, implying that widely different galaxies share very similar neutral hydrogen surface densities. In this work we show that self-regulated star formation, driven by the competition between gravitational instabilities and mechanical feedback from supernovae, can explain the nearly constant neutral hydrogen surface density across galaxies. We therefore recover the simple scaling relation observed between the neutral hydrogen mass and surface area. This result furthers our understanding of the surprising simplicity in the observed properties of diverse galaxies.
description: 5 pages, 1 figure, accepted for publication in ApJ
Entanglement-annihilating and entanglement-breaking channels
Creators: name: Moravčíková, Lenka
name: Ziman, Mario
Publisher: name: arXiv
Year: 2010
Subjects: subject: Quantum Physics (quant-ph)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We introduce and investigate a family of entanglement-annihilating channels. These channels are capable of destroying any quantum entanglement within the system they act on. We show that they are not necessarily entanglement breaking. In order to achieve this result we analyze the subset of locally entanglement-annihilating channels. In this case, the same local noise applied on each subsystem individually is less entanglement annihilating (with respect to multi-partite entanglement) as the number of subsystems is increasing. Therefore, the bipartite case provides restrictions on the set of local entanglement-annihilating channels for the multipartite case. The introduced concepts are illustrated on the family of single-qubit depolarizing channels.
description: 2 figures, comments welcome
The extent of dust in NGC 891 from Herschel/SPIRE images
Creators: name: Bianchi, Simone
name: Xilouris, Emmanuel
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We analyse Herschel/SPIRE images of the edge-on spiral galaxy NGC 891 at 250, 350 and 500 micron. Using a 3D radiative transfer model we confirm that the dust has a radial fall-off similar to the stellar disk. The dust disk shows a break at about 12 kpc from the center, where the profile becomes steeper. Beyond this break, emission can be traced up to 90% of the optical disk in the NE side. On the SW, we confirm dust emission associated with the extended, asymmetric HI disk, previously detected by the Infrared Space Observatory (ISO). This emission is marginally consistent with the large diffuse dust disk inferred from radiative transfer fits to optical images. No excess emission is found above the plane beyond that of the thin, unresolved, disk.
description: Letter accepted for publication in A&A; final version after shortening and language editing
Large Highly-Ionized Nebulae Around Ultra-luminous X-ray Sources
Creators: name: Moon, Dae-Sik
name: Harrison, Fiona A.
name: Cenko, S. Bradley
name: Shariff, Jamil A.
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present the results of deep optical spectroscopic observations using the LRIS spectrograph on the Keck I 10-m telescope of three ultra-luminous X-ray sources (ULXs), Ho IX X-1; M81 X-6; and Ho II X-1. Our observations reveal the existence of large (100 - 200 pc diameter) highly-ionized nebulae, identified by diffuse He II (4686 Angstrom) emission, surrounding these sources. Our results are the first to find highly-ionized nebulae of this extent, and the detection in all three objects indicates this may be a common feature of ULXs. In addition to the extended emission, Ho IX X-1 has an unresolved central component containing about one-third of the total He II flux, with a significant velocity dispersion of ~ 370 km/s, suggestive of the existence of a photo-ionized accretion disk or an extremely hot early-type stellar counterpart. Most of the He II emission appears to be surrounded by significantly more extended Hbeta emission, and the intensity ratios between the two lines, which range from 0.12 - 0.33, indicate that photo-ionization is the origin of the He II emission. Sustaining these extended nebulae requires substantial X-ray emission, in the range ~ 10^{39} - 10^{40} ergs/s, comparable to the measured X-ray luminosities of the sources. This favors models where the X-ray emission is isotropic, rather than beamed, which includes the interpretation that ULXs harbor intermediate-mass black holes.
description: Accepted for publication in ApJ Letters
An Experimental Proposal to Test Dynamic Quantum Non-locality with Single-Atom Interferometry
Creators: name: Zhu, Shi-Liang
name: Xue, Zheng-Yuan
name: Zhang, Dan-Wei
name: Duan, Lu-Ming
Publisher: name: arXiv
Year: 2010
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Quantum non-locality based on the well-known Bell inequality is of kinematic nature. A different type of quantum non-locality, the non-locality of the quantum equation of motion, is recently put forward with connection to the Aharonov-Bohm effect [Nature Phys. 6, 151 (2010)]. Evolution of the displacement operator provides an example to manifest such dynamic quantum non-locality. We propose an experiment using single-atom interferometry to test such dynamic quantum non-locality. We show how to measure evolution of the displacement operator with clod atoms in a spin-dependent optical lattice potential and discuss signature to identify dynamic quantum non-locality under a realistic experimental setting.
description: 4 pages
Using the Project Eddie Module “Paleoclimate and Ocean Biogeochemistry” in the Upper-Division Undergraduate Course “Climate and the Earth System”
Creators: name: Zanazzi, Alessandro
Publisher: name: QUBES Educational Resources
Year: 2023

description: Students explore and compare datasets on modern nutrient concentrations and productivity, as well as paleo datasets to try to answer the question: “How does primary productivity influence global climate at glacial-interglacial timescales?”
Di-lepton production in p+p collisions at $\sqrt{s_{_{NN}}} = 200$ GeV from STAR
Creators: name: Ruan, Lijuan
Publisher: name: arXiv
Year: 2010
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: The di-electron analysis for 200 GeV p+p collisions is presented in this article. The cocktail simulations of di-eletrons from light flavor meson decays and heavy flavor decays are reported and compared with data. The perspectives for di-lepton measurements in Au+Au collisions are discussed.
description: 4 pages, 2 figures, Hard Probes 2010 proceedings
Bayesian inference from photometric redshift surveys
Creators: name: Jasche, Jens
name: Wandelt, Benjamin D.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We show how to enhance the redshift accuracy of surveys consisting of tracers with highly uncertain positions along the line of sight. Photometric surveys with redshift uncertainty delta_z ~ 0.03 can yield final redshift uncertainties of delta_z_f ~ 0.003 in high density regions. This increased redshift precision is achieved by imposing an isotropy and 2-point correlation prior in a Bayesian analysis and is completely independent of the process that estimates the photometric redshift. As a byproduct, the method also infers the three dimensional density field, essentially super-resolving high density regions in redshift space. Our method fully takes into account the survey mask and selection function. It uses a simplified Poissonian picture of galaxy formation, relating preferred locations of galaxies to regions of higher density in the matter field. The method quantifies the remaining uncertainties in the three dimensional density field and the true radial locations of galaxies by generating samples that are constrained by the survey data. The exploration of this high dimensional, non-Gaussian joint posterior is made feasible using multiple-block Metropolis-Hastings sampling. We demonstrate the performance of our implementation on a simulation containing 2.0 x 10^7 galaxies. These results bear out the promise of Bayesian analysis for upcoming photometric large scale structure surveys with tens of millions of galaxies.
description: 17 pages, 12 figures
Nachhaltige Sicherung von digitalem Kulturgut
Creators: name: Wildi, Tobias
Publisher: name: Zenodo
Year: 2021
Subjects: Digital Preservation
Sustainability
Cultural Heritage Protection

description: Verschiedene Aspekte von Nachhaltigkeit in der digitalen Archivierung. Die Präsentation fokussiert in erster Linie auf nachhaltige digitale Objekte.
3D visualization of micrometer sized structures in technical materials via Micro-CT and FIB/SEM - incl. tomographic datasets and video files of a microfluidic probe
Creators: name: Thomann, Yi
name: Thomann, Ralf
Publisher: name: Zenodo
Year: 2022
Subjects: FIB-SEM
micro CT
microfluidic
microelectronic

description: Abstract: This is a method and application note, in which we present one of our works on the characterization of interior structures via µ-CT (micro–computed tomography) and FIB/SEM (focused ion beam/scanning electron microscopy). As an example, we selected the characterization of a microfluidic device (probe). Both µ-CT (micro-tomography) and FIB/SEM cross sectioning methods are applied. For the µ-CT part, the main workflow includes: - µ-CT scanning (creating projection x-ray shadow images in different angles)
 - tomographic data processing and
 - 3D tomographic visualization. The µ-CT is a prioritized tomography method, especially when micrometer sized structures are the main interest. Thanks to the well-developed instruments and software, the method is quite straightforward. The machine takes a series of x-ray shadow images by rotating the object by 360° or 180° in free selectable steps. This set of pictures is then reconstructed into a new set of tomographic slices. However, we find that the post-processing work on the tomography datasets remains quite challenging. The objective of this work is the 3D visualization, which gives us a direct deeper look into the interior of the material and the structure. One of these post processing works is the segmentation, which specifies different structural or material components within the tomography dataset. After a successful segmentation, we colored and visualized the structures in 3D, which is described in detail for our example below. For the FIB/SEM part, we simply present cross-sectional images showing resolutions beyond the limit of the µ-CT method. While µ-CT shows a resolution limit in micrometer dimensions, the FIB/SEM method is able to resolve structures down to a few nanometers and supplies therefore finer structural details. On the other hand, FIB-SEM with a gallium ion beam is quite limited to the characterization of small selected areas, especially compared to µ-CT, which gives us a large structural overview in 3D. Therefore, both methods complement each other very well.