cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Analysis of variability of TW Hya as observed by MOST and ASAS in 2009
Creators: name: Siwak, Michal
name: Rucinski, Slavek M.
name: Matthews, Jaymie M.
name: Pojmanski, Grzegorz
name: Kuschnig, Rainer
name: Guenther, David B.
name: Moffat, Anthony F. J.
name: Sasselov, Dimitar
name: Weiss, Werner W.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: As a continuation of our previous studies in 2007 and 2008, new photometric observations of the T Tauri star TW Hya obtained by the MOST satellite and the ASAS project over 40 days in 2009 with temporal resolution of 0.2 days are presented. A wavelet analysis of the combined MOST-ASAS data provides a rich picture of coherent, intermittent, variable-period oscillations, similarly as discovered in the 2008 data. The periods (1.3 - 10 days) and systematic period shortening on time scales of weeks can be interpreted within the model of magneto-rotationally controlled accretion processes in the inner accretion disk around the star. Within this model and depending on the assumed visibility of plasma parcels causing the oscillations, the observed shortest-period oscillation period may indicate the stellar rotation period of 1.3 or 2.6 d, synchronized with the disk at 4.5 or 7.1 solar radii, respectively.
description: Accepted to MNRAS
Additional file 1 of How parents experience their adolescent’s disclosure of previous sexual abuse: a qualitative study
Creators: name: Mauny, Philippe
name: Guessoum, Sélim Benjamin
name: Moro, Marie Rose
name: Radjack, Rahmeth
name: Carretier, Émilie
Publisher: name: figshare
Year: 2023
Subjects: Medicine
Neuroscience
Biological Sciences not elsewhere classified
Cancer
Science Policy
Mental Health

description: Supplementary Material 1: Semi-structured interview guide
Smooth Contractive Embeddings and Application to Feynman Formula for Parabolic Equations on Smooth Bounded Domains
Creators: name: Baur, Benedict
name: Conrad, Florian
name: Grothaus, Martin
Publisher: name: arXiv
Year: 2010
Subjects: subject: Functional Analysis (math.FA)
subject: Mathematical Physics (math-ph)
subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: We prove two assumptions made in an article by Ya.A. Butko, M. Grothaus, O.G. Smolyanov concerning the existence of a strongly continuous operator semigroup solving a Cauchy-Dirichlet problem for an elliptic differential operator in a bounded domain and the existence of a smooth contractive embedding of a core of the generator of the semigroup into the space $C_c^{2,α}(\R^n)$. Based on these assumptions a Feynman formula for the solution of the Cauchy-Dirichlet problem is constructed in the article mentioned above. In this article we show that the assumptions are fulfilled for domains with $C^{4,α}$-smooth boundary and coefficients in $C^{2,α}$.
Why do Chinese international students attend the University of British Columbia : push and pull factors
Creators: name: Jiang, Qiu Qiong
Publisher: name: University of British Columbia
Year: 2014

description: Globalization is regarded as the context and facilitating force for the increasingly enhanced internationalization of higher education around the world. As a response to globalization, the internationalization of higher education takes places in various forms and practices in different countries. In contemporary era, international student mobility is by far the main form of cross-border education in the world. In existing relevant literature, the push and pull model is employed by many researchers as the theoretical framework to investigate the motives of international students, the host countries and higher education institutions. There are approximately three million international students studying outside of their home countries (IEE, 2010). China has become the largest source country of international students among these three-million international students. Most of the study-abroad Chinese students from mainland China went to pursue overseas higher education after 1999 when the Chinese government began to enforce the university expansion policy in mainland China. However, few researchers gave attention to this unprecedented out-going heat among Chinese students in the past decade. The purpose of this study was to investigate the factors inspiring a large number of Chinese students to study abroad after the 1999 reform in the Chinese higher education sector. The push and pull model was employed as the theoretical framework in this study. A semi-structure one-on-one interview was used as the research method to collect inquired information. Nine Chinese international students who are currently studying at the University of British Columbia were recruited as the research participants. The research results show that there are both shared and individual motives inspiring these nine students to decide on undertaking overseas higher education based on their personal academic, economic and social background.
Additional file 3 of Functional and structural characteristics of HLA-B*13:01-mediated specific T cells reaction in dapsone-induced drug hypersensitivity
Creators: name: Jiang, Haiqin
name: Wang, Chuang-Wei
name: Wang, Zhaoxi
name: Dai, Yufei
name: Zhu, Yanping
name: Lee, Yun-Shien
name: Cao, Yang
name: Chung, Wen-Hung
name: Ouyang, Songying
name: Wang, Hongsheng
Publisher: name: figshare
Year: 2022
Subjects: subject: Immunology
subject: FOS: Clinical medicine

description: Additional file 3: Table S1. TCR primers used in RT-PCR analysis.
BCS-BEC crossover in spatially modulated fermionic condensates
Creators: name: Sedrakian, Armen
Publisher: name: arXiv
Year: 2011
Subjects: subject: Nuclear Theory (nucl-th)
subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: Several novel multi-component fermionic condensates show universal behavior under imbalance in the number of fermionic species. Here I discuss their phase structure, thermodynamics, and the transition from the weak (BCS) to strong (BEC) coupling regime. The inhomogeneous superconducting phases are illustrated on the example of the Fulde-Ferrell phase which appears in the weak coupling regime, at low temperatures and large asymmetries. The inhomogeneous phases persist through the crossover up to (and possibly beyond) the transition to the strong coupling regime.
description: 6 pages, 6 figures. to appear in Journal of Physics: Conference Series (JPCS); contribution to "Many-body correlations from dilute to dense nuclear systems (MBC2011)"
Presentation of the Nordic Infrastructure Collaboration on Earth System Tools project (NICEST2) at AHM2022
Creators: name: Fouilloux, Anne
Publisher: name: Zenodo
Year: 2022
Subjects: climate
earth system modelling
FAIR
container

description: A short presentation of the NICEST2 project (Nordic Infrastructure Collaboration on Earth System Tools) for the NeIC All-hands meeting (AHM) 2022. The NeIC All-hands meeting (AHM) is the annual event at NeIC where people working on NeIC projects come together across projects and teams.
description: This presentation was produced for the NICEST2 project, that is supported by the Nordic e-Infrastructure Collaboration (NeIC), which is part of NordForsk.
Two-state free Brownian motions
Creators: name: Anshelevich, Michael
Publisher: name: arXiv
Year: 2010
Subjects: subject: Operator Algebras (math.OA)
subject: Probability (math.PR)
subject: FOS: Mathematics
subject: Primary 46L53, Secondary 46L54, 60G51, 60H05

description: In a two-state free probability space $(A, ϕ, ψ)$, we define an algebraic two-state free Brownian motion to be a process with two-state freely independent increments whose two-state free cumulant generating function is quadratic. Note that a priori, the distribution of the process with respect to the second state $ψ$ is arbitrary. We show, however, that if $A$ is a von Neumann algebra, the states $ϕ, ψ$ are normal, and $ϕ$ is faithful, then there is only a one-parameter family of such processes. Moreover, with the exception of the actual free Brownian motion (corresponding to $ϕ= ψ$), these processes only exist for finite time.
description: 21 pages
Multiplexed fluidic plunger mechanism for the measurement of red blood cell deformability
Creators: name: Myrand-Lapierre, Marie-Eve
Publisher: name: University of British Columbia
Year: 2015

description: Red blood cell (RBC) deformability plays an important role in the pathology of various diseases, including malaria, hemoglobinopathies, and micronutrient deficiencies. Specifically, in malaria, the analysis of RBC deformability presents new approaches for detecting infections and for rapidly evaluating the response to drugs by patients. A key challenge, however, is that the infected RBCs represent only a small subpopulation of clinical blood specimens. Therefore effective detection of infection and analysis require methods that can measure a large number of individual RBCs. Traditional technologies for measuring RBC deformability either cannot evaluate single cells to identify diseased subpopulations or do not have sufficient measurement throughput to detect rare subpopulations. In additions, they require delicate experiments, expensive equipment, and skilled technicians. To address these issues, we developed a new microfluidic mechanism, known as the Multiplexed Fluidic Plunger (MFP), to measure RBC deformability using many microscale-tapered constrictions in parallel. The deformability of each RBC is determined by the threshold pressure required to squeeze the cell through a constriction. Our mechanism overcomes a key challenge where the pressure applied to each cell is dependent on the presence or absence of other cells and thereby produces in an inconsistent measurement result. We devised a mechanism to avoid this error and showed that a consistent measurement is obtained independent of constrictions occupancy. Furthermore, the sensitivity of the MFP device is comparable or superior to existing techniques since it can distinguish control and 0.0005% glutaraldehyde-treated RBCs (p<0.005). The high sensitivity of this mechanism, potential low production cost, and simplified experimental procedures facilitates its application in a clinical context such as in areas where malaria is endemic. Therefore, we further determined the deformability profiles of RBCs parasitized by P. falciparum (concentrations ranging from 1-16%). The MFP device was able to detect the deformability of RBCs with a parasitemia as low as 1.8% and can therefore potentially be used to evaluate the parasitemia of infected samples.
Parameterized Complexity Results in Symmetry Breaking
Creators: name: Walsh, Toby
Publisher: name: arXiv
Year: 2010
Subjects: subject: Artificial Intelligence (cs.AI)
subject: Computational Complexity (cs.CC)
subject: FOS: Computer and information sciences
subject: I.2.3

description: Symmetry is a common feature of many combinatorial problems. Unfortunately eliminating all symmetry from a problem is often computationally intractable. This paper argues that recent parameterized complexity results provide insight into that intractability and help identify special cases in which symmetry can be dealt with more tractably
description: Invited talk at IPEC 2010, 5th International Symposium on Parameterized and Exact Computation, December 13-15, 2010, Chennai, India http://www.imsc.res.in/ipec
Additional file 1 of Determinants of willingness to pay for community-based health insurance scheme among households in rural community of southern Ethiopia
Creators: name: Abebe, Yonas
name: Belayneh, Fanuel
Publisher: name: figshare
Year: 2023
Subjects: subject: Medicine
subject: Environmental Sciences not elsewhere classified
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Cancer
subject: Science Policy

description: Additional file 1: Questionnaire for research on Determinants of willingness to pay for community-based health insurance scheme among households in rural community of southern Ethiopia, 2020
Response of the polaron system consisting of an impurity in a Bose-Einstein condensate to Bragg spectroscopy
Creators: name: Casteels, W.
name: Tempere, J.
name: Devreese, J. T.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We expand the existing polaron response theory, expressed within the Mori-Zwanzig projection operator formalism applicable for the transfer of arbitrary energy and zero momentum, to the case of finite momentum exchange. A general formula is then derived which can be used to calculate the response of a system to a probe that transfers both momentum and energy to the system. The main extension of the existing polaron response theory is the finite momentum exchange which was not needed until now since it is negligible for optical absorption. However, this formalism is needed to calculate the response of the polaronic system consisting of an impurity in a Bose-Einstein condensate to Bragg spectroscopy. We show that the well-known features that appear in the optical absorption of the solid state Fröhlich polaron are also present in the Bragg response of the BEC-impurity polaron. The f-sum rule is written in a form suitable to provide an independent consistency test for our results. The effect of lifetime broadening on the BEC-impurity spectrum is examined. The results derived here are discussed in the framework of an experimental realization consisting of a lithium impurity in a sodium condensate.
description: 20 pages, 6 figures
PT symmetry, Cartan decompositions, Lie triple systems and Krein space related Clifford algebras
Creators: name: Guenther, Uwe
name: Kuzhel, Sergii
Publisher: name: arXiv
Year: 2010
Subjects: subject: Mathematical Physics (math-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Gauged PT quantum mechanics (PTQM) and corresponding Krein space setups are studied. For models with constant non-Abelian gauge potentials and extended parity inversions compact and noncompact Lie group components are analyzed via Cartan decompositions. A Lie triple structure is found and an interpretation as PT-symmetrically generalized Jaynes-Cummings model is possible with close relation to recently studied cavity QED setups with transmon states in multilevel artificial atoms. For models with Abelian gauge potentials a hidden Clifford algebra structure is found and used to obtain the fundamental symmetry of Krein space related J-selfadjoint extensions for PTQM setups with ultra-localized potentials.
description: 11 pages
Rein Einasto välipäevik nr 13
Creators: name: Einasto, Rein
Publisher: name: Tallinna Tehnikaülikooli Geoloogia Instituut
Year: 1974
Subjects: Silurian
Estonia
Saaremaa
outcrops
drill cores
geological descriptions

description: Field notebook with descriptions of Silurian outcrops and drill cores in Saaremaa (From years 1974, 1976, 1982, 1990)
Deep Hα Observations of NGC 253: a Very Extended and Possibly Declining Rotation Curve?
Creators: name: Hlavacek-Larrondo, J.
name: Carignan, C.
name: Daigle, O.
name: de Denus-Baillargeon, M. -M.
name: Marcelin, M.
name: Epinat, B.
name: Hernandez, O.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: This study presents a deep Hα kinematical analysis of the Sculptor Group galaxy NGC253. The Fabry-Perot data were taken with the 36-cm Marseille Telescope in La Silla, Chile, using an EMCCD detector. Typical emission measures of ~0.1 cm^-6 pc are reached. The observations allow the detection of the Diffuse Ionized Gas component through [N II] emission at very large radii of 11.5', 12.8' and 19.0', on the receding side of the galaxy. No Hα emission is observed at radii larger than the neutral component (11.5'). The very extended rotation curve confirms previous results and shows signs of a significant decline, on the order of 30 per cent vmax . Using the rotation data, mass models are constructed with and without the outer [N II] data points, and similar results are found. The declining part of the rotation curve is very well modeled, and seems to be truly declining.
description: Accepted for publication in MNRAS. 16 pages, 10 figures, 4 tables
Rein Einasto välipäevik nr 15
Creators: name: Einasto, Rein
Publisher: name: Tallinna Tehnikaülikooli Geoloogia Instituut
Year: 1977
Subjects: Silurian
Ukraina
Podolia
outcrops
geological descriptions

description: Field notebook with descriptions of Silurian outcrops in Podolia, Ukraina
Hybrid neutron stars based on a modified PNJL model
Creators: name: Blaschke, David
name: Berdermann, Jens
name: Lastowiecki, Rafal
Publisher: name: arXiv
Year: 2010
Subjects: subject: Nuclear Theory (nucl-th)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We discuss a three-flavor Nambu--Jona-Lasinio (NJL) type quantum field theoretical approach to the quark matter equation of state (EoS) with scalar diquark condensate, isoscalar vector mean field and Kobayashi-Maskawa-'t Hooft (KMT) determinant interaction. While often the diquark and vector meson couplings are considered as free parameters, we will fix them here to their values according to the Fierz transformation of a one-gluon exchange interaction. In order to estimate the effect of a possible change in the vacuum pressure of the gluon sector at finite baryon density we exploit a recent modification of the Polyakov-loop NJL (mPNJL) model which introduces a parametric density dependence of the Polyakov-loop potential also at T=0, thus being relevant for compact star physics. We use a Dirac-Brueckner-Hartree-Fock (DBHF) EoS for the hadronic matter phase and discuss results for mass-radius relationships following from a solution of the TOV equations for such a hybrid EoS in the context of observational constraints from selected objects.
description: 6 pages, 2 figures
January 2022 NICEST2 newsletter
Creators: name: Fouilloux, Anne
Publisher: name: Zenodo
Year: 2022
Subjects: earth system model
climate
nordic
nicest2

description: The January 2022 NICEST2 Newsletter is out and available here (HTML and pdf format). Below is a short summary: FAIR for Climate Science in the Nordics The NeIC-NICEST2 staff attended the Metadata for Machines workshop (M4M) organized by EOSC-Nordic for the Climate Community and it was a great success! Diagnostics for Earth System Modelling We are inviting researchers, Research Software Engineers that use or develop diagnostics tools for Earth System Models to fill out our survey: https://forms.gle/AxS7apMXKw6Po5iu5 Lumi and NICEST2: a joint interest for joint resources Our first experience with EuroHPC has been a success and we believe that having joint access to Lumi would benefit the NeIC-NICEST2 staff, and more generally the Nordic climate community. Upcoming seminar series on the use of GPUs in the field of climate Science Our next seminar series will be dedicated to GPUs and Climate science and we are gathering a list of potential presenters. (email jeani-at-uio-no).
description: Thie newsletter was produced for the NICEST2 project, that is supported by the Nordic e-Infrastructure Collaboration (NeIC), which is part of NordForsk.
The Crab pulsar seen with Aqueye at Asiago Cima Ekar Observatory
Creators: name: Zampieri, L.
name: Germanà, C.
name: Barbieri, C.
name: Naletto, G.
name: Čadež, A.
name: Capraro, I.
name: Di Paola, A.
name: Facchinetti, C.
name: Occhipinti, T.
name: Ponikvar, D.
name: Verroi, E.
name: Zoccarato, P.
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: We are developing fast photon-counter instruments to study the rapid variability of astrophysical sources by time tagging photon arrival times with unprecedented accuracy, making use of a Rubidium clock and GPS receiver. The first realization of such optical photon-counters, dubbed Aqueye (the Asiago Quantum Eye), was mounted in 2008 at the 182cm Copernicus Observatory in Asiago. Aqueye observed the Crab pulsar several times and collected data of extraordinary quality that allowed us to perform accurate optical timing of the Crab pulsar and to study the pulse shape stability on a timescale from days to years with an excellent definition. Our results reinforce the evidence for decadal stability of the inclination angle between the spin and magnetic axis of the Crab pulsar. Future realizations of our instrument will make use of the Galileo Global Navigation Satellite System (GNSS) time signal.
description: 11 pages, 3 figures. To appear in Advances in Space Research, volume 47(2) - January 15, 2011; first volume of the Galileo Special Issue "Scientific applications of Galileo and other Global Navigation Satellite Systems"
Algorithm of Reading
Creators: name: Milena Tsvetkova
Publisher: name: Zenodo
Year: 2015
Subjects: subject: Reading
subject: Reading Skills
subject: Educational Personnel/education
subject: Educational sciences
subject: FOS: Educational sciences
subject: Psychology, Educational
subject: Educational Technology/instrumentation
subject: Cognitive psychology
subject: Cognitive Psychology
subject: Cognitive Dissonance
subject: Cognitive Science

description: Milena Tsvetkova from Sofia University tested her presentation "reading algorithm". This shows that reading has six phases: perception, understanding the significance, realizing of the meaning,  interpretation, self-transforming and influence on external behavior. The main thesis is that reading is the most difficult to master cultural practice. The second phase is of key importance -understanding when reading. The conclusion is that it is necessary to rethink the concept of reading so that it is adequate to modern technologies.

Note: Downloadable document is in Bulgarian.
description: A report of the National Round Table "Reading with understanding - the way to the development of educational skills", which opens the initiative of the national campaign "Fun Summer Reading 2015" Sofia, American Center, Metropolitan Library, 05/27/2015
Artificial atoms can do more than atoms: Deterministic single photon subtraction from arbitrary light fields
Creators: name: Honer, Jens
name: Löw, Robert
name: Weimer, Hendrik
name: Pfau, Tilman
name: Büchler, Hans Peter
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study the interplay of photons interacting with an artificial atom in the presence of a controlled dephasing. Such artifical atoms consisting of several independent scatterer can exhibit remarkable properties superior to single atoms with a prominent example being a superatom based on Rydberg blockade. We demonstrate that the induced dephasing allows for the controlled absorption of a single photon from an arbitrary incoming probe field. This unique tool in photon-matter interaction opens a way for building novel quantum devices and several potential applications like a single photon transistor, high fidelity n-photon counters, or for the creation of non-classical states of light by photon subtraction are presented.
description: 4 pages, 4 figures
Application of elastic mid-IR-laser-light scattering for non-destructive inspection in microelectronics
Creators: name: Kalinushkin, V. P.
name: Yuryev, V. A.
name: Astafiev, O. V.
name: Buzynin, A. N.
name: Bletskan, N. I.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Some possible applications of the low-angle mid-IR-light scattering technique and some recently developed on its basis methods for non-destructive inspection and investigation of semiconductor materials and structures are discussed in the paper. The conclusion is made that the techniques in question might be very useful for solving a large number of problems regarding defect investigations and quality monitoring both in research laboratories and the industry of microelectronics
description: MRS Spring Meeting, San Francisco, USA, 17-21 April 1995
Rein Einasto välipäevik nr 22
Creators: name: Einasto, Rein
Publisher: name: Tallinna Tehnikaülikooli Geoloogia Instituut
Year: 1984
Subjects: Silurian
Estonia
drill cores
geological descriptions

description: Field notebook with descriptions of Silurian in drill cores around Rapla; Silurian in Tartu 453 drill core
Exact Results on Potts Model Partition Functions in a Generalized External Field and Weighted-Set Graph Colorings
Creators: name: Shrock, Robert
name: Xu, Yan
Publisher: name: arXiv
Year: 2010
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We present exact results on the partition function of the $q$-state Potts model on various families of graphs $G$ in a generalized external magnetic field that favors or disfavors spin values in a subset $I_s = \{1,...,s\}$ of the total set of possible spin values, $Z(G,q,s,v,w)$, where $v$ and $w$ are temperature- and field-dependent Boltzmann variables. We remark on differences in thermodynamic behavior between our model with a generalized external magnetic field and the Potts model with a conventional magnetic field that favors or disfavors a single spin value. Exact results are also given for the interesting special case of the zero-temperature Potts antiferromagnet, corresponding to a set-weighted chromatic polynomial $Ph(G,q,s,w)$ that counts the number of colorings of the vertices of $G$ subject to the condition that colors of adjacent vertices are different, with a weighting $w$ that favors or disfavors colors in the interval $I_s$. We derive powerful new upper and lower bounds on $Z(G,q,s,v,w)$ for the ferromagnetic case in terms of zero-field Potts partition functions with certain transformed arguments. We also prove general inequalities for $Z(G,q,s,v,w)$ on different families of tree graphs. As part of our analysis, we elucidate how the field-dependent Potts partition function and weighted-set chromatic polynomial distinguish, respectively, between Tutte-equivalent and chromatically equivalent pairs of graphs.
description: 39 pages, 1 figure
Rein Einasto välipäevik nr 23
Creators: name: Einasto, Rein
Publisher: name: Tallinna Tehnikaülikooli Geoloogia Instituut
Year: 1980
Subjects: Silurian
Kaliningrad Oblast
Podolia
outcrops
drill cores
geological descriptions

description: Field notebook with descriptions of Silurian in drill cores  Kaliningrad Oblast, outcrops and drill cores Podolia (years 1980-1983)
Rein Einasto välipäevik nr 24
Creators: name: Einasto, Rein
Publisher: name: Tallinna Tehnikaülikooli Geoloogia Instituut
Year: 1985
Subjects: Ordovician
Estonia
Osmussaar Island
outcrops
geological descriptions

description: Field notebook with descriptions of Ordovician in Osmussaar Island, Estonia. Impressions of trips years 1985, 1999, 2009
Focus on food : a study of food culture among Vancouver secondary school students
Creators: name: Shulhan, Stephanie
Publisher: name: University of British Columbia
Year: 2014

description: The industrial model of agriculture and food systems has led to environmental and soil degradation, loss of biodiversity, and an increase in the prevalence and availability of inexpensive processed foods that are high in calories and fats but low in micro-nutrients (Lang & Heasman, 2002; Muller, Schoonover, & Wallinga, 2007). The transition to a healthier and more sustainable food system will require increased involvement from various stakeholders participating constructively in all aspects of the food system. Promoting this kind of food citizenship among young people, in venues such as public schools, holds great potential for facilitating broader food systems change (Rojas et al., 2011). To do this requires an understanding of young peoples’ current eating and food-related practices and the influences on those practices, including the deeper meanings ascribed to different types of food selections and behaviours. The Focus on Food study reported here seeks to understand food culture among grade 9 and 10 students in Vancouver, as well as how they frame their food choices. I conducted small semi-structured focus groups during which student participants discussed their lunch selections and typical eating behaviours, their perceived influences on those behaviours, and their experiences and opinions about various ways of eating that resonated with them. The study found that participants often framed food as either “good” (usually harmless) or “bad” (often coinciding with being harmful) products. Most participants said that they valued natural foods and ingredients, whereas they were suspicious of those that seemed artificial or unfamiliar. Participants described attempts to avoid or resist “bad” foods and to seek out “good” ones, and many wanted more information about and/or control over the foods available to them. Some participants expressed dissatisfaction with disengaged eating experiences (like fast food consumption), and said that they would prefer more engaged food experiences, such as preparing and enjoying their own “good” food. Initiatives to promote healthy, sustainable, and enjoyable eating should continue to engage students in constructive and hands-on food-related learning activities, during which they can acquire skills and knowledge while positively contributing to human and ecological health.
High-angular resolution observations of methanol in the infrared dark cloud core G11.11-0.12P1
Creators: name: Gomez, Laura
name: Wyrowski, Friedrich
name: Pillai, Thushara
name: Leurini, Silvia
name: Menten, Karl M.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Recent studies suggest that infrared dark clouds (IRDCs) have the potential of harboring the earliest stages of massive star formation and indeed evidence for this is found toward distinct regions within them. We present a study with the Plateau de Bure Interferometer of a core in the archetypal filamentary IRDC G11.11-0.12 at few arcsecond resolution to determine its physical and chemical structure. The data consist of continuum and line observations covering the C34S 2-1 line and the methanol 2_k-1_k v_t=0 lines at 3mm and the methanol 5_k-4_k v_t =0 lines at 1mm. Our observations show extended emission in the continuum at 1 and 3 mm. The methanol 2_k-1_k v_t=0 emission presents three maxima extending over 1 pc scale (when merged with single-dish short-spacing observations); one of the maxima is spatially coincident with the continuum emission. The fitting results show enhanced methanol fractional abundance (~3x10^-8) at the central peak with respect to the other two peaks, where it decreases by about an order of magnitude (~4-6x10^-9). Evidence of extended 4.5 microns emission, "wings" in the CH3OH 2_k-1_k spectra, and CH3OH abundance enhancement point to the presence of an outflow in the East-West direction. In addition, we find a gradient of ~4 km/s in the same direction, which we interpret as being produced by an outflow(s)-cloud interaction.
description: Accepted for publication to A&A
HEAT - a low energy enhancement of the Pierre Auger Observatory
Creators: name: Meurer, C.
name: Scharf, N.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The High Elevation Auger Telescopes (HEAT) are three tiltable fluorescence telescopes which represent a low energy enhancement of the fluorescence telescope system of the southern site of the Pierre Auger Observatory in Argentina. The Pierre Auger Observatory is a hybrid cosmic ray detector consisting of 24 fluorescence telescopes to measure the fluorescence light of extensive air showers complemented by 1600 water Cherenkov detectors to determine the particle densities at ground. In this configuration air showers with a primary energy of 10^18 eV and above are investigated. By lowering the energy threshold by approximately one order of magnitude down to a primary energy of 10^17 eV, HEAT provides the possibility to study the cosmic ray energy spectrum and mass composition in a very interesting energy range, where the transition from galactic to extragalactic cosmic rays is expected to happen. The installation of HEAT was finished in 2009 and data have been taken continuously since September 2009. Within these proceedings the HEAT concept is presented. First data already demonstrate the excellent complement of the standard Auger fluorescence telescopes by HEAT.
description: To appear in the proceedings of 22nd European Cosmic Ray Symposium (ECRS 2010), Turku, Finland, 3-6 Aug 2010
The dynamo bifurcation in rotating spherical shells
Creators: name: Morin, Vincent
name: Dormy, Emmanuel
Publisher: name: arXiv
Year: 2010
Subjects: subject: Geophysics (physics.geo-ph)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: We investigate the nature of the dynamo bifurcation in a configuration applicable to the Earth's liquid outer core, i.e. in a rotating spherical shell with thermally driven motions. We show that the nature of the bifurcation, which can be either supercritical or subcritical or even take the form of isola (or detached lobes) strongly depends on the parameters. This dependence is described in a range of parameters numerically accessible (which unfortunately remains remote from geophysical application), and we show how the magnetic Prandtl number and the Ekman number control these transitions.
description: 16 pages, 14 figures
Seismic demands on gravity-load columns of reinforced concrete shear wall buildings
Creators: name: Bazargani, Poureya
Publisher: name: University of British Columbia
Year: 2014

description: In shear wall buildings, walls serve as the seismic force resisting system while the gravity-load system consists of columns that are primarily designed to carry the weight of the building through frame action and are not detailed for seismic ductility. Design codes require the gravity-load system to be checked for deformation compatibility as the building deforms laterally. The process of checking the columns for adequate deformability still requires more work. In addition to flexural deformations, components such as shear strain and rotation of the foundation contribute significantly to lateral deformations in the wall plastic hinge zone. Shear strains in flexural shear walls are analytically shown to be a result of large vertical tensile strains in areas with inclined cracks. Based on this theory, a simple design-oriented method for estimating shear strain profile of flexural shear walls is formulated, the accuracy of which is verified against experimental results from works of other researchers. Rotation of shear wall foundations is studied through performing about 2000 Nonlinear Time-History Analysis (NTHA) considering the nonlinear interaction between the foundation and the underlying soil. Behaviour of shear walls accounting for foundation rotation is explained with emphasis on relative wall to foundation strengths. A simple method for obtaining the monotonic foundation moment-rotation response is formulated which is then used in a simple step-by-step method for estimating foundation rotation in a given shear wall building. Curvature demand on columns pushed to a given wall deformation profile is studied using a structural analysis algorithm specifically designed for the task. In the absence of wall shear strain or significant foundation rotation, column curvature demand is found to remain close to the wall maximum curvature. Wall shear strain and foundation rotation are found to cause severe increase to column curvature demand. In a parametric study on column curvature demand, parameters including wall length, column length, height of column plastic hinge zone, first storey height, fixity of the column at grade level, and the effect of members framing into the column are studied. Several simple expressions for estimating column curvature demand are derived that can be implemented in design.
Dynamical description of vesicle growth and shape change
Creators: name: Morris, Richard G.
name: Fanelli, Duccio
name: McKane, Alan J.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Biological Physics (physics.bio-ph)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: We systematize and extend the description of vesicle growth and shape change using linear nonequilibrium thermodynamics. By restricting the study to shape changes from spheres to axisymmetric ellipsoids, we are able to give a consistent formulation which includes the lateral tension of the vesicle membrane. This allows us to generalize and correct a previous calculation. Our present calculations suggest that, for small growing vesicles, a prolate ellipsoidal shape should be favored over oblate ellipsoids, whereas for large growing vesicles oblates should be favored over prolates. The validity of this prediction is examined in the light of the various assumptions made in its derivation.
description: 6 pages
Investigating variation of latitudinal stellar spot rotation and its relation to the real stellar surface rotation
Creators: name: Korhonen, H.
name: Elstner, D.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: In this work the latitude dependent stellar spot rotation is investigated based on dynamo models. The maps of the magnetic pressure at the surface from the dynamo calculations are treated similarly to the temperature maps obtained using Doppler imaging techniques. A series of snapshots from the dynamo models are cross-correlated to obtain the shift of the magnetic patterns at each latitude and time point. The surface differential rotation patterns obtained from the snapshots of the dynamo calculations show in all studied cases variability over the activity cycle. In the models using only the large scale dynamo field the measured rotation patterns are only at times similar to the input rotation law. This is due to the spot motion being mainly determined by the geometric properties of the large scale dynamo field. In the models with additional small scale magnetic field the surface differential rotation measured from the model follows well the input rotation law. The results imply that the stellar spots caused by the large scale dynamo field are not necessarily tracing the stellar differential rotation, whereas the spots formed from small scale fields trace well the surface flow patterns. It can be questioned whether the large spots observed in active stars could be caused by small scale fields. Therefore, it is not clear that the true stellar surface rotation can be recovered using measurements of large starspots, which are currently the only ones that can be observed.
description: 8 pages, 10 figures, accepted for publication in A&A
The Role of Crystal Symmetry in the Magnetic Instabilities of $β$-YbAlB$_4$ and $α$-YbAlB$_4$
Creators: name: Tompsett, D. A.
name: Yin, Z. P.
name: Lonzarich, G. G.
name: Pickett, W. E.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Density functional theory methods are applied to investigate the properties of the new superconductor $β$-YbAlB$_4$ and its polymorph $α$-YbAlB$_4$. We utilize the generalized gradient approximation + Hubbard U (GGA+U) approach with spin-orbit(SO) coupling to approximate the effects of the strong correlations due to the open $4f$ shell of Yb. We examine closely the differences in crystal bonding and symmetry of $β$-YbAlB$_4$ and $α$-YbAlB$_4$. The in-plane bonding structure amongst the dominant itinerant electrons in the boron sheets is shown to differ significantly. Our calculations indicate that, in both polymorphs, the localized 4$f$ electrons hybridize strongly with the conduction sea when compared to the related materials YbRh$_{2}$Si$_{2}$ and YbB$_{2}$. Comparing $β$-YbAlB$_4$ to the electronic structure of related crystal structures indicates a key role of the 7-member boron coordination of the Yb ion in $β$-YbAlB$_4$ in producing its enhanced Kondo scale and superconductivity. The Kondo scale is shown to depend strongly on the angle between the B neighbors and the Yb ion, relative to the $x-y$ plane, which relates some of the physical behavior to structural characteristics.
description: 9 pages, 9 figures, 2 tables
Rein Einasto välipäevik nr 28
Creators: name: Einasto, Rein
Publisher: name: Tallinna Tehnikaülikooli Geoloogia Instituut
Year: 1994
Subjects: Silurian
Gotland
meetings
excursions
outcrops
short notes
observations

description: Field notebook with short notes of Silurian in outcrops of Gotland
Aasa Aaloe välipäevik nr 3
Creators: name: Aaloe, Aasa
Publisher: name: Tallinna Tehnikaülikooli Geoloogia Instituut
Year: 1970
Subjects: Estonia
Leningrad Oblast
Ordovician
Kukruse stage
oil shale deposit
productive beds
drill cores
geological descriptions

description: Field notebook with description of oil shale productive beds in oil shale mines of Estonian and Leningrad Oblast, and Kukruse Stage in drill cores Estonia
Lattice QCD at finite temperature and density
Creators: name: Ejiri, Shinji
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study the phase structure of QCD at finite temperature and density by numerical simulations on a lattice. The most important point for the numerical study at finite density is treatment of the sign problem. We propose a method to avoid the sign problem, which is based on a cumulant expansion of the complex phase in the density of state method combined with the reweighting method. Using the method, we study the critical point terminating a first order phase transition line in lattice QCD at high temperature and density.
description: 6 pages, 4 figures, talk presented at the YITP workshop on "New Frontiers in QCD 2010", March 1-19, 2010, Kyoto, Japan
A Comparison Between Lucky Imaging and Speckle Stabilization for Astronomical Imaging
Creators: name: Keremedjiev, M.
name: Eikenberry, S. S.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: The new technique of Speckle Stabilization has great potential to provide optical imaging data at the highest angular resolutions from the ground. While Speckle Stabilization was initially conceived for integral field spectroscopic analyses, the technique shares many similarities with speckle imaging (specifically shift-and-add and Lucky Imaging). Therefore, it is worth comparing the two for imaging applications. We have modeled observations on a 2.5-meter class telescope to assess the strengths and weaknesses of the two techniques. While the differences are relatively minor, we find that Speckle Stabilization is a viable competitor to current Lucky Imaging systems. Specifically, we find that Speckle Stabilization is 3.35 times more efficient (where efficiency is defined as signal-to-noise per observing interval) than shift-and-add and able to detect targets 1.42 magnitudes fainter when using a standard system. If we employ a high-speed shutter to compare to Lucky Imaging at 1% image selection, Speckle Stabilization is 1.28 times more efficient and 0.31 magnitudes more sensitive. However, when we incorporate potential modifications to Lucky Imaging systems we find the advantages are significantly mitigated and even reversed in the 1% frame selection cases. In particular, we find that in the limiting case of Optimal Lucky Imaging, that is zero read noise {\it and} photon counting, we find Lucky Imaging is 1.80 times more efficient and 0.96 magnitudes more sensitive than Speckle Stabilization. For the cases in between, we find there is a gradation in advantages to the different techniques depending on target magnitude, fraction of frames used and system modifications.
description: 21 page, 6 figures. Accepted for publication in PASP
Dp-branes, NS5-branes and U-duality from nonabelian (2,0) theory with Lie 3-algebra
Creators: name: Honma, Yoshinori
name: Ogawa, Morirou
name: Shiba, Shotaro
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We derive the super Yang-Mills action of Dp-branes on a torus T^{p-4} from the nonabelian (2,0) theory with Lie 3-algebra. Our realization is based on Lie 3-algebra with pairs of Lorentzian metric generators. The resultant theory then has negative norm modes, but it results in a unitary theory by setting VEV's of these modes. This procedure corresponds to the torus compactification, therefore by taking a transformation which is equivalent to T-duality, the Dp-brane action is obtained. We also study type IIA/IIB NS5-brane and Kaluza-Klein monopole systems by taking other VEV assignments. Such various compactifications can be realized in the nonabelian (2,0) theory, since both longitudinal and transverse directions can be compactified, which is different from the BLG theory. We finally discuss U-duality among these branes, and show that most of the moduli parameters in U-duality group are recovered. Especially in D5-brane case, the whole U-duality relation is properly reproduced.
description: 1+26 pages