cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Control Scheme for Polarization Circulation Speed Meter Using a Dual-Retardation Waveplate
Creators: name: Nishino, Yohei
name: Akutsu, Tomotada
name: Aso, Yoichi
name: Tomaru, Takayuki
Publisher: name: arXiv
Year: 2023
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: In interferometric gravitational wave detectors, quantum radiation pressure noise, which is a back action of the measurement, will limit their sensitivities at low frequencies. Speed meters are one of the solutions to reduce the back action noise and improve the sensitivities, and furthermore, they can surpass the standard quantum limit over a wide range of frequencies. The Polarization Circulation Speed Meter is the latest incarnation of the speed meter concept in the sense that it requires a slight modification in the conventional interferometer designs; however, its control scheme has not been developed. The main difficulty is the length and alignment control of the cavity formed by the polarization circulation mirror and the input test masses, whose round-trip phase shift should be kept to $π$. In this article, we propose a new control scheme using a dual-retardation waveplate, called Dual-Retardance Control (DRC). In addition, we compare the shot noise level of the DRC to another simpler scheme by dithering. Finally, we design the experimental setup for the demonstration of the DRC and show the expected results through the transfer function measurement.
description: 9 pages, 8 figures, 3 tables
Effect of tendon mechanical properties on force steadiness in young and old adults
Creators: name: Arefin, Sharmin
Publisher: name: University of British Columbia
Year: 2015

description: The contribution of the tendon to age-related differences in elbow flexor force steadiness has not been studied. The purpose of this study was to investigate the effect of tendon compliance on force steadiness in young compared with old males during sustained submaximal isometric elbow flexion contractions. Force steadiness and tendon properties were measured in ten young (22.4 ± 3.7 years; 166.9 ± 11.8 cm; 74.3 ± 13.2 kg), and ten old (77.3 ± 5.3 years; 168.9 ± 14.1 cm; 84.6 ± 13.5 kg) healthy physically active males at 6 submaximal forces of 2.5%, 5%, 10%, 20%, 40%, and 60% maximal voluntary contraction (MVC). Muscle-tendon characteristics were assessed by ultrasonography and force steadiness with an isometric dynamometer. Young and old did not differ in height, weight, muscle-tendon, and bone parameters (p > 0.05). The main findings of the present study were that a) Young were ~20.4% (p < 0.001) stronger than old and this was not due to a difference in voluntary activation (p > 0.05), b) Young were steadier (1.1 ± 1.0 CV % MVC) than old (1.9 ± 1.5 CV % MVC) across the 6 submaximal forces (p < 0.001), c) Tendon mechanical properties such as stress (p > 0.07, n²= 0.19), stiffness (p > 0.07, n²= 0.17), and Young’s Modulus (p > 0.07, n²= 0.17) were moderately less in old than young, and d) Tendon mechanical properties become stiffer as force increases (p < 0.05). Tendon displacement, strain, and stress were correlated with force steadiness (p < 0.001). These data suggest that tendon properties are one of the primary factors contributing to differences in steadiness across submaximal forces, and these mechanical properties contribute modestly to age-related differences.
Proton -- Lambda Correlations in Central Pb+Pb Collisions at sqrt(s_{NN}) = 17.3 GeV
Creators: name: Anticic, T.
name: Baatar, B.
name: Barna, D.
name: Bartke, J.
name: Beck, H.
name: Betev, L.
name: Bialkowska, H.
name: Blume, C.
name: Bogusz, M.
name: Boimska, B.
name: Book, J.
name: Botje, M.
name: Buncic, P.
name: Cetner, T.
name: Christakoglou, P.
name: Chung, P.
name: Chvala, O.
name: Cramer, J.
name: Eckardt, V.
name: Fodor, Z.
name: Foka, P.
name: Friese, V.
name: Gazdzicki, M.
name: Grebieszkow, K.
name: Hohne, C.
name: Kadija, K.
name: Karev, A.
name: Kolesnikov, V.
name: Kowalski, M.
name: Kresan, D.
name: Laszlo, A.
name: Lacey, R.
name: van Leeuwen, M.
name: Mackowiak, M. K.
name: Makariev, M.
name: Malakhov, A.
name: Mateev, M.
name: Melkumov, G.
name: Mitrovski, M.
name: Mrowczynski, St.
name: Nicolic, V.
name: Palla, G.
name: Panagiotou, A.
name: Peryt, W.
name: Pluta, J.
name: Prindle, D.
name: Puhlhofer, F.
name: Renfordt, R.
name: Roland, C.
name: Roland, G.
name: Rybczynski, M.
name: Rybicki, A.
name: Sandoval, A.
name: Schmitz, N.
name: Schuster, T.
name: Seyboth, P.
name: Sikler, F.
name: Skrzypczak, E.
name: Slodkowski, M.
name: Stefanek, G.
name: Stock, R.
name: Strobele, H.
name: Susa, T.
name: Szuba, M.
name: Utvic, M.
name: Varga, D.
name: Vassiliou, M.
name: Veres, G.
name: Vesztergombi, G.
name: Vranic, D.
name: Wlodarczyk, Z.
name: Wojtaszek-Szwarc, A.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The momentum correlation between protons and lambda particles emitted from central Pb+Pb collisions at sqrt(s_{NN}) = 17.3 GeV was studied by the NA49 experiment at the CERN SPS. A clear enhancement is observed for small relative momenta (q_{inv} < 0.2 GeV). By fitting a theoretical model, which uses the strong interaction between the proton and the lambda in a given pair, to the measured data a value for the effective source size is deduced. Assuming a static Gaussian source distribution we derive an effective radius parameter of R_G = 3.02 \pm 0.20$(stat.)^{+0.44}_{-0.16}(syst.) fm.
description: 14 pages, 9 figures, submitted to Phys. Rev. C
Interpretation eines komplexen genetischen Befundes mit Blick auf die neurologische und klinische Symptomatik
Creators: name: Daas, Nina-Marie
Publisher: name: Universität Rostock
Year: 2019
Subjects: subject: 610 Medical sciences Medicine

description: Die Arbeit beschäftigt sich damit, eine Übersicht der genetischen und phänotypischen Merkmale des Patienten F.H., welcher durch eine verzögerte Entwicklung und morphologische Stigmatat auffiel, zu erarbeiten und mit den in der Literatur beschriebenen Fällen zu vergleichen. Anhand der Ergebnisse wird versucht, aus dem komplexen Phänotyp ein schlüssiges Bild zu schaffen und anhand des Wissens über die Funktion der betroffenen Gene eine grobe Einschätzung über den zukünftigen Verlauf der Entwicklung des Patienten und mögliche Komplikationen zu geben.
Transverse spin asymmetries for W-production in proton-proton collisions
Creators: name: Metz, A.
name: Zhou, J.
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We study parity-even and parity-odd polarization observables for the process $p \, p \to l^{\pm} \, X$, where the lepton comes from the decay of a $W$-boson. By using the collinear twist-3 factorization approach, we consider the case when one proton is transversely polarized, while the other is either unpolarized or longitudinally polarized. These observables give access to two particular quark-gluon-quark correlation functions, which have a direct relation to transverse momentum dependent parton distributions. We present numerical estimates for RHIC kinematics. Measuring, for instance, the parity-even transverse single spin correlation would provide a crucial test of our current understanding of single spin asymmetries in the framework of QCD.
description: 10 pages
Multicultural counselling self-efficacy among school counsellors in British Columbia
Creators: name: Adams, Cynthia
Publisher: name: University of British Columbia
Year: 2015

description: Across Canada, schools are serving an increasingly multicultural student population, one with diverse and sometimes unfamiliar experiences and worldviews. Despite this fact, very little research has been conducted on school counsellor multicultural self-efficacy in Canada. To address this gap, a survey research design was used to assess the level of multicultural self-efficacy among a sample of school counsellors (N = 226) in British Columbia. This study also sought to identify the demographic and workplace variables that contribute to higher levels of multicultural counselling self-efficacy among school counsellors in British Columbia. In addition, the study examined the relative contribution of years of experience versus caseload diversity, and the impact of high levels of multicultural training on the relationship between self-efficacy and years of experience. The School Counselor Multicultural Self-Efficacy Scale (SCMES; Holcomb-McCoy, Harris, Hines, & Johnston, 2008) measured self-efficacy across six factors. Results suggest that BC school counsellors have moderate to high levels of multicultural counselling self-efficacy across all six factors of the SCMES. Hierarchical regression analyses were used to identify the unique contributions of specific predictor variables to specific SCMES factors. Three distinct patterns emerged. In Pattern #1, graduate-level multicultural training courses, and frequency of cross-cultural sessions were the most influential predictors. In Pattern #2, multicultural training alone exerted the greatest influence. However, in Pattern #3, teaching experience and community setting combined with graduate-level multicultural training as significant contributors to a single factor: Factor 3 (Developing Cross-Cultural Relationships). Factor 3 plays an important and unique role in subsequent analyses. The implications of these findings for counsellor training and practice, and suggestions for further research are discussed.
Supplementary Results for ‘Landscape response to normal fault linkage: Insights from numerical modeling’
Creators: name: Chuanqi He
name: Ci-Jian Yang
name: Rao, Gang
name: Duna C. Roda-Boluda
name: Yuan, Xiao-Ping
name: Yang, Rong
name: Gao, Lin
name: Zhang, Li
Publisher: name: figshare
Year: 2020
Subjects: subject: Geology
subject: FOS: Earth and related environmental sciences
subject: 40402 Geodynamics
subject: 40601 Geomorphology and Regolith and Landscape Evolution
subject: 40604 Natural Hazards
subject: 40310 Sedimentology
subject: Solid Earth Sciences
subject: 40312 Structural Geology
subject: 40607 Surface Processes
subject: 40313 Tectonics

description: The files go with the manuscript of He et al. Landscape response to normal fault linkage: Insights from numerical modeling. Earth and Planetary Science Letters (Under consideration). The raw data underlying Figs. 3, 5, 7, S2–S5, and S8 are provided as a Raw Data file. The Raw Data file, topographies (in Figs. 2, 4, 6, S6), erosion rates (in Figs. 1, 4, 6, S6), and Movies 1–4 were deposited in figshare. Besides, a MATLAB script (BE10_Concentration.m) and a readme file were also deposited at figshare. Based on the result of the Accelerator Mass Spectrometry measurement, this script can export 10Be concentration and its uncertainties.
Longitudinal studies on tooth replacement in the leopard gecko
Creators: name: Wong, Andrew Carlton Edward
Publisher: name: University of British Columbia
Year: 2015

description: The leopard gecko is an emerging reptilian model for the molecular basis of indefinite tooth replacement. Here we characterize the tooth replacement frequency and pattern of tooth loss in the normal adult gecko. We chose to perturb the system of tooth replacement by activating the Wingless signaling pathway (Wnt). Misregulation of Wnt leads to supernumerary teeth in mice and humans. We hypothesized by activating Wnt signaling with LiCl, tooth replacement frequency would increase. To measure the rate of tooth loss and replacement, weekly dental wax bites of 3 leopard geckos were taken over a 35-week period. The present/absent tooth positions were recorded. During the experimental period, the palate was injected bilaterally with NaCl (control) and then with LiCl. The geckos were to be biological replicates. Symmetry was analyzed with parametric tests (repeated measures ANOVA, Tukey’s post-hoc), while time for emergence and total absent teeth per week were analyzed with non-parametric tests (Kruskal-Wallis ANOVA, Mann-Whitney U post-hoc and Bonferroni Correction). The average replacement frequency was 6-7 weeks and posterior-to-anterior waves of replacement were formed. Right to left symmetry between individual tooth positions was high (>80%) when all teeth were included but dropped to 50% when only absent teeth were included. Two animals were followed for 14 weeks after NaCl injections and 14 weeks after LiCl injections. NaCl did not affect the replacement dentition but LiCl delayed and disrupted the pattern of replacement. The phenotypes were more severe for one animal including 1) increased time before emergence, 2) increased total number of absent teeth per week, 3) a greater effect on anterior teeth and 4) disruption of symmetry. The most affected period began 7 weeks post LiCl injection. At the end of the study, in vitro CT scans of both animals revealed normal patterns of unerupted teeth however there was bone loss in one animal. Gecko tooth replacement is rapid enough to be useful for longitudinal studies. Between-animal variation is high when studying individual teeth therefore each animal should be used as its own control. Future work includes increasing the biological replicates and detailed molecular studies to confirm the effect of LiCl.
title: Student Insights Report, Fall 2019
Creators: name: The Center for Student Analytics
Publisher: name: Utah State University
Year: 2019

description: For the past three years, the staff of the Center for Student Analytics have worked to discover and expose meaningful, data-informed insights into what helps students succeed at Utah State University. The following pages highlight 20 of the most useful insights we found provided here in small sets that will be useful to students, faculty, staff, university leadership, parents, and even prospective students. As you explore this report, we encourage you to see the student data as a window into USU itself. While big data helps us understand how individual students are performing, it tells us a great deal more about the health of USU as an institution—an Aggie community working diligently to cultivate opportunities for student learning, discovery, and engagement.
What a Two Solar Mass Neutron Star Really Means
Creators: name: Lattimer, James M.
name: Prakash, M.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The determination of neutron star masses is reviewed in light of a new measurement of 1.97 M$_\odot$ for PSR J1614-2230 and an estimate of 2.4 M$_\odot$ for the black widow pulsar. Using a simple analytic model related to the so-called maximally compact equation of state, model-independent upper limits to thermodynamic properties in neutron stars, such as energy density, pressure, baryon number density and chemical potential, are established which depend upon the neutron star maximum mass. Using the largest well-measured neutron star mass, 1.97 M$_\odot$, it is possible to show that the energy density can never exceed about 2 GeV, the pressure about 1.3 GeV, and the baryon chemical potential about 2.1 GeV. Further, if quark matter comprises a significant component of neutron star cores, these limits are reduced to 1.3 GeV, 0.9 GeV, and 1.5 GeV, respectively. We also find that the maximum binding energy of any neutron star is about 25% of the rest mass. Neutron matter properties and astrophysical constraints additionally imply an upper limit to the neutron star maximum mass of about 2.4 M$_\odot$. A measured mass of 2.4 M$\odot$ would be incompatible with hybrid star models containing {\it significant} proportions of exotica in the form of hyperons, Bose condensates or quark matter.
description: 26 pages, 4 figures and 2 tables. To appear in Gerry Brown's Festschrift; Editor: Sabine Lee (World Scientific)
Magnetic Amplification at Yb3+ "Designer Defects" in the van der Waals Ferromagnet, CrI3
Creators: name: Pressler, Kimo
name: Snoeren, Thom J.
name: Walsh, Kelly M.
name: Gamelin, Daniel R.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The two-dimensional (2D) van der Waals ferromagnet CrI3 has been doped with the magnetic optical impurity Yb3+ to yield materials that display sharp multi-line Yb3+ photoluminescence (PL) controlled by the magnetism of CrI3. Magneto-PL shows that Yb3+ magnetization is pinned to the magnetization of CrI3. An effective internal field of ~10 T at Yb3+ is estimated, attributed to strong in-plane Yb3+-Cr3+ superexchange coupling. The anomalously low energy of Yb3+ PL in CrI3 reflects relatively high Yb3+-I- covalency, contributing to Yb3+-Cr3+ superexchange coupling. The Yb3+ PL energy and linewidth both reveal the effects of spontaneous zero-field CrI3 magnetic ordering within 2D layers below TC, despite the absence of net magnetization in multilayer samples. These results illustrate the use of optical impurities as "designer defects" to introduce unique functionality to 2D magnets.
description: submitted to Nano Letters
High Rate CO2 Photoreduction Using Flame Annealed TiO2 Nanotubes
Creators: name: Kar, Piyush;; Zeng, Sheng;; Zhang, Yun; Vahidzadeh, Ehsan;; Manuel, Ajay P.;; Kisslinger, Ryan;; Alam, Kazi M,;; Thakur, Ujwal K.,; Mahdi, Najia;; Kumar, Pawan;; Shankar, Karthik
Publisher: name: University of Alberta Libraries
Year: 2018

Abstract
Opioid maintenance treatment retention and perceptions of care among long-term opioid dependent men and women
Creators: name: Palis, Heather Nadine
Publisher: name: University of British Columbia
Year: 2015

description: Background: Opioid dependence is a chronic relapsing disease with a number of related harms. Despite the proven effectiveness of opioid maintenance many men and women are not engaged or retained in this treatment. Accounting for patient perceptions of their interactions with health care providers may offer important evidence as to meeting gender specific heath and treatment needs of this population. Objective: This thesis investigates access to health care and addiction treatment services among long-term opioid dependent men and women. Factors associated with retention to opioid maintenance treatment are explored among participants and stratified by gender. Perceptions of encounters with health care providers as potentially offensive, degrading, or abusive are considered. Finally, the feasibility of sharing study findings with long-term opioid users are explored. Methods: The Gender Matters in the Health of Long-term Opioid Users study is a descriptive cross-sectional study of long-term opioid users in the Downtown Eastside of Vancouver. Descriptive variables were explored and logistic regression models were built to determine associations between independent variables and the opioid maintenance treatment retention and perceived abuse in health care outcomes. Two formats of sharing study findings with participants were piloted and participant perceptions of study findings and the meeting formats were gathered. Results: Rates of opioid maintenance treatment retention were similar among men and women while factors associated with retention differed by gender. Half of participants reported perceived abuse in health care, which was associated with childhood maltreatment and psychological health problems. The majority of participants felt it was important for participants to be involved in knowledge translation, while few had previously had the opportunity to do so. Conclusions: Gender, along with other structural factors have strong implications for the appropriateness and success of the treatment and models of care provided to opioid-dependent men and women. Patient histories and perspectives must be accounted for to determine suitable treatments and to ensure health care encounters are not perceived as offensive, degrading, or abusive. The involvement of participants in knowledge translation can serve as a means of empowering participants and accounting for patient voice in recommendations for service provision and policy.
title: The Innovation Delta: A Model for Collaborative Decision Making
Creators: name: Colver, Mitchell
Publisher: name: Utah State University
Year: 2019

description: In a fast-paced, high reward professional environment, it is easy to engage in haphazard, if not well-meaning, solution seeking. While there are many resources that aid the decision-making process, it is all too common to fall back on our own perceptions and biases as an exclusive decision-making tool, leading to ill-formed solutions.
The Innovation Delta reminds the decision maker to rely on at least three sources of information to triangulate on a viable solution: personal Reflection, formal and informal Evaluation practices, and Emulation of others who have already discovered solutions that may be appropriate.
Kinetic reconstruction of free energies as a function of multiple order parameters
Creators: name: Goswami, Yagyik
name: Sastry, Srikanth
Publisher: name: arXiv
Year: 2023
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: A vast array of phenomena, ranging from chemical reactions to phase transformations, are analysed in terms of a free energy surface defined with respect to a single or multiple order parameters. Enhanced sampling methods are typically used, especially in the presence of large free energy barriers, to estimate free energies using biasing protocols and sampling of transition paths. Kinetic reconstructions of free energy barriers of intermediate height have been performed, with respect to a single order parameter, employing the steady state properties of unconstrained simulation trajectories when barrier crossing is achievable with reasonable computational effort. Considering such cases, we describe a method to estimate free energy surfaces with respect to multiple order parameters from a steady state ensemble of trajectories. The approach applies to cases where the transition rates between pairs of order parameter values considered is not affected by the presence of an absorbing boundary, whereas the macroscopic fluxes and sampling probabilities are. We demonstrate the applicability of our prescription on different test cases of random walkers executing Brownian motion in order parameter space with an underlying (free) energy landscape and discuss strategies to improve numerical estimates of the fluxes and sampling. We next use this approach to reconstruct the free energy surface for supercooled liquid silicon with respect to the degree of crystallinity and density, from unconstrained molecular dynamics simulations, and obtain results quantitatively consistent with earlier results from umbrella sampling.
title: Why do you go to College? Shaping Student Beliefs and Success. A Dissertation Summary.
Creators: name: Colver, Mitchell
Publisher: name: Utah State University
Year: 2018

description: Students enter the realm of higher education with a wide variety of beliefs about the purposes of attending university, which often relate to or reveal their various motivations for pursuing a post-secondary education. Research demonstrates that some student motivations align more fully with intrinsic factors, such as the love of learning or quest for excellence, while other student motivations align with extrinsic factors, such as vocational preparedness and monetary incentives (Vallerand et al., 1989). Using a Bourdieusienne lens, this study sought to place these student motivations in the larger sociocultural context and argue for greater opportunities for democratic equity in post-secondary environments. Relying on Self-Determination Theory, the study investigated the relationship between student academic motivations and longitudinal academic performance at a four-year, research oriented university in the United States. More importantly, the study sought to determine if institutional interventions, specifically incoming student orientation and a first-year experience (FYE) course, were valuable in helping align student motivations with the central values of higher education. Using the Academic Motivation Scale for College (AMS-C) across two years, the study employed a Latent Profile Analysis (LPA) and Latent Transition Analysis (LTA) to extract several profiles or “types” of student motivation and examined developmental variability of these profiles across time. Students who shifted from a more controlled to a more autonomous motivational profile in connection with institutional intervention demonstrated the highest levels of first-year academic performance and retention.  However, these results diminished during the second academic year. Implications for practice suggest the importance of providing students with a values-based intervention to enhance autonomy-oriented academic motivation and to do so in a manner that sustains this enhancement throughout the academic career.
Dynamic Radius Jet Clustering Algorithm
Creators: name: Mukhopadhyaya, Biswarup
name: Samui, Tousik
name: Singh, Ritesh K.
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The study of standard QCD jets produced along with fat jets, which may appear as a result of the decay of a heavy particle, has become an essential part of collider studies. Current jet clustering algorithms, which use a fixed radius parameter for the formation of jets from the hadrons of an event, may be inadequate to capture the differing radius features. In this work, we develop an alternative jet clustering algorithm that allows the radius to vary dynamically based on local kinematics and distribution in the $η$-$ϕ$ plane inside each evolving jet. We present the usefulness of this dynamic radius clustering algorithm through two Standard Model processes, and thereafter illustrate it for a scenario beyond the Standard Model at the 13 TeV LHC.
description: 33 pages, 13 figures, 2 tables
Star formation in bright-rimmed clouds and cluster associated with W5 E H{\sc ii} region
Creators: name: Chauhan, Neelam
name: Pandey, A. K.
name: Ogura, K.
name: Jose, J.
name: Ojha, D. K.
name: Samal, M. R.
name: Mito, H.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The aim of this paper is to present the results of photometric investigations of the central cluster of the W5 E region as well as a follow-up study of the triggered star formation in and around bright-rimmed clouds (BRCs). We have carried out wide field $UBVI_c$ and deep $VI_c$ photometry of the W5 E H{\sc ii} region. A distance of $\sim$2.1 kpc and a mean age of $\sim$1.3 Myr have been obtained for the central cluster. The young stellar objects (YSOs) associated with the region are identified on the basis of near-infrared and mid-infrared observations. We confirmed our earlier results that the average age of the YSOs lying on/inside the rim are younger than those lying outside the rim. The global distribution of the YSOs shows an aligned distribution from the ionising source to the BRCs. These facts indicate that a series of radiation driven implosion processes proceeded from near the central ionising source towards the periphery of the W5 E H{\sc ii} region. We found that, in general, the age distributions of the Class II and Class III sources are the same. This result is apparently in contradiction with the conclusion by Bertout, Siess & Cabrit (2007) and Chauhan et al. (2009) that classical T Tauri stars evolve to weak-line T Tauri stars. The initial mass function of the central cluster region in the mass range $0.4 \le M/M_\odot \le 30$ can be represented by $Γ= -1.29 \pm 0.03$. The cumulative mass functions indicate that in the mass range $0.2 \le M/M_\odot \le 0.8$, the cluster region and BRC NW have more low mass YSOs in comparison to BRCs 13 and 14.
description: 43 pages, 17 figures, accepted for publication in MNRAS
Universal gravity-driven isothermal turbulence cascade in disk galaxies
Creators: name: Fensch, Jérémy
name: Bournaud, Frédéric
name: Brucy, Noé
name: Dubois, Yohan
name: Hennebelle, Patrick
name: Rosdahl, Joakim
Publisher: name: arXiv
Year: 2023
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: While interstellar gas is known to be supersonically turbulent, the injection processes of this turbulence are still unclear. Many studies suggest a dominant role of gravitational instabilities. However, their effect on galaxy morphology and large-scale dynamics vary across cosmic times, in particular due to the evolution of the gas fraction of galaxies. In this paper, we propose numerical simulations to follow the isothermal turbulent cascade of purely gravitationally-driven turbulence from its injection scale down to 0.095 pc for a gas-poor spiral disk and a gas-rich clumpy disk. To this purpose, and to lift the memory-footprint technical lock of sufficiently resolving the interstellar medium of a galaxy, we developed an encapsulated zoom method that allows us to probe self-consistently the self-generated turbulence cascade over three orders of magnitude on spatial scales. We follow this cascade for 10 Myrs. We find that the turbulent cascade follows the same scaling laws in both setups. Namely, in both cases the turbulence is close to equipartition between its compressive and solenoidal modes, the velocity power spectrum follows the Burgers' scaling and the density power spectrum is rather shallow, with a power-law slope of -0.7. Last, gravitationally-bound substructures follow a mass distribution with a -1.8 slope, similar to that of CO clumps. These simulations thus suggest a universality of gravity-driven isothermal turbulent cascade in disk galaxies across cosmic time.
description: 12 pages, 13 figures. Accepted for publication in A&A
A detection system to measure muon-induced neutrons for direct Dark Matter searches
Creators: name: Kozlov, V. Yu.
name: Armengaud, E.
name: Augier, C.
name: Benoit, A.
name: Berge, L.
name: Besida, O.
name: Blumer, J.
name: Broniatowski, A.
name: Brudanin, V.
name: Chantelauze, A.
name: Chapellier, M.
name: Chardin, G.
name: Charlieux, F.
name: Collin, S.
name: Defay, X.
name: De Jesus, M.
name: Di Stefano, P.
name: Dolgorouki, Y.
name: Domange, J.
name: Dumoulin, L.
name: Eitel, K.
name: Gascon, J.
name: Gerbier, G.
name: Gros, M.
name: Hannawald, M.
name: Herve, S.
name: Juillard, A.
name: Kluck, H.
name: Lemrani, R.
name: Loaiza, P.
name: Lubashevskiy, A.
name: Marnieros, S.
name: Navick, X. -F.
name: Olivieri, E.
name: Pari, P.
name: Paul, B.
name: Rozov, S.
name: Sanglard, V.
name: Scorza, S.
name: Semikh, S.
name: Torrento-Coello, A. S.
name: Vagneron, L.
name: Verdier, M-A.
name: Yakushev, E.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: Muon-induced neutrons constitute a prominent background component in a number of low count rate experiments, namely direct searches for Dark Matter. In this work we describe a neutron detector to measure this background in an underground laboratory, the Laboratoire Souterrain de Modane. The system is based on 1 m3 of Gd-loaded scintillator and it is linked with the muon veto of the EDELWEISS-II experiment for coincident muon detection. The system was installed in autumn 2008 and passed since then a number of commissioning tests proving its full functionality. The data-taking is continuously ongoing and a count rate of the order of 1 muon-induced neutron per day has been achieved.
description: Accepted for publication in Astroparticle Physics; 14 pages, 10 figures
Heterogeneous ice nucleation : laboratory freezing results and testing different schemes to describe ice nucleation in atmospheric models
Creators: name: Wheeler, Michael James
Publisher: name: University of British Columbia
Year: 2015

description: Ice nucleation occurs throughout the atmosphere. Some atmospheric ice particles are formed through nucleation on insoluble atmospheric aerosols known as ice nuclei (IN). The abundance and chemical composition of these IN affect the properties of clouds and in turn the radiative balance of the Earth through the indirect effect of IN on climate. The indirect effect of IN on climate is one of the least understood topics in climate change. A better understanding of ice nucleation and better capabilities to parameterize ice nucleation are needed to improve the predictions of the effect of IN on climate. Using a temperature and humidity controlled flow cell coupled to an optical microscope, the ice nucleation properties of three different mineral dust particles are examined in two different freezing modes. Results showed that the freezing ability of supermicron dust particles is lower than that of submicron dust particles of the same type. These freezing results along with literature freezing results of nine biological aerosol particles are used to evaluate different schemes used to parameterize ice nucleation in atmospheric models. These schemes are evaluated based on the ability to reproduce the laboratory freezing results. It was found that a single parameter scheme based on classical nucleation theory was unable to reproduce the freezing results of all particles studied. However, more complex schemes were able to reproduce the freezing results. The results in this thesis can be used by atmospheric modellers to improve predictions of mixed-phase and ice clouds and climate change.
Orbit quantization in a retarded harmonic oscillator
Creators: name: López, Álvaro G.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: We study the dynamics of a damped harmonic oscillator in the presence of a retarded potential with state-dependent time-delayed feedback. In the limit of small time-delays, we show that the oscillator is equivalent to a Liénard system. This allows us to analytically predict the value of the first Hopf bifurcation, unleashing a self-oscillatory motion. We compute bifurcation diagrams for several model parameter values and analyse multistable domains in detail. Using the Lyapunov energy function, two well-resolved energy levels represented by two coexisting stable limit cycles are discerned. Further exploration of the parameter space reveals the existence of a superposition limit cycle, encompassing two degenerate coexisting limit cycles at the fundamental energy level. When the system is driven very far from equilibrium, a multiscale strange attractor displaying intrinsic and robust intermittency is uncovered.
Biological roles of cellular glyceraldehyde-3-phosphate dehydrogenase in the hepatitis C virus life cycle
Creators: name: Raj, Meera
Publisher: name: University of British Columbia
Year: 2015

description: The hijacking and manipulation of host cell biosynthetic pathways by human viruses are shared molecular events that are essential for the viral life cycle. Because of increasing evidence of the importance of human glyceraldehyde-3-phosphate dehydrogenase (GAPDH) in host secretory pathway functions, I hypothesized that this multifunctional enzyme could contribute to life cycles of two Flaviviridae members, hepatitis C virus (HCV) and dengue virus (DENV). The first aim of this project was to investigate whether GAPDH is a host factor that regulates the life cycle steps of HCV in human hepatoma Huh-7.5.1 cells. I used short interfering RNA (siRNA)-mediated silencing of GAPDH both pre- and post-HCV infection in Huh-7.5.1 cells to demonstrate that reducing GAPDH protein abundance inhibits primary HCV infection and production and/or release of infectious HCV virus particles. Exogenous expression of V5-tagged human GAPDH, pre- and post-infection, increases the viral infectivity of HCV-infected Huh-7.5.1 cell supernatants, suggesting a predominant role of GAPDH during the post-replication steps of the HCV life cycle. Finally, siRNA-mediated GAPDH suppression in human Huh-7.5.1 cells also significantly inhibited primary DENV-2 infection. In the second aim, I further investigated the diverse functions of GAPDH in human hepatoma cells by performing differential expression profiling of total cellular proteins by quantitative proteomics in two GAPDH knockdown Huh-7-derived cell lines (67D2 and 67b3) and the parental Huh-7 cell line. First, I successfully established GAPDH knockdown Huh-7-derived cell lines using short hairpin RNA (shRNA) lentivirus particles. Second, I demonstrated that the stable shRNA-mediated GAPDH silencing in Huh-7 cells inhibits primary HCV infection and the production of infectious HCV virus particles. Using a quantitative proteomics strategy based on triplex dimethyl labeling and nano-liquid chromatography-tandem mass spectrometry, I determined the cellular proteins deregulated in 67D2 and 67B3 cells. Bio-informatic analysis of the differentially expressed proteins revealed a robust compensatory effect in molecular functions associated with enzymatic activities and “acting binding” in response to the silencing of GAPDH in 67D2 and 67D3 cells.
Acting like a state : the politics of foreign labor admission in Japan and Taiwan
Creators: name: Kalicki, Konrad
Publisher: name: University of British Columbia
Year: 2022

description: This doctoral dissertation examines the contentious issue of international labor migration in an ever more competitive global environment. It seeks to explain why similarly advanced economies opt for different admission schemes for supplementary foreign manpower. Specifically, it examines why Japan and Taiwan – two cases that share many structural features – have adopted divergent admission mechanisms for foreign unskilled/low-skilled workers. Since the late 1980s, Japan has turned to thinly disguised labor importation channels, while Taiwan has relied on official guest-worker schemes. By examining the path of policy-making in these empirically neglected states, this study explains in theoretical terms the reasons behind adopting such divergent institutional arrangements for recruiting supplementary overseas labor. Injecting an explicit political science perspective into international migration research, it explores how preferences and autonomous interests of the state leave an imprint on the content of labor importation policy. The study argues that pressures to internationalize the Japanese and Taiwanese domestic labor markets were, at base, filtered by two interrelated factors: the state’s perception of security risks involved in admitting particular groups of migrants (be they co-ethnics or others) and inter-ministerial bargaining over authority in this policy area within the state apparatus, mediated by the state’s institutional structure. This state-centered perspective contributes to the understanding of the politics of labor importation in East Asia in particular, and to the comparative scholarship of immigration in general.
FERMENTED MILK PRODUCTS USING VEGETABLE FILLINGS
Creators: name: Solomon, A.M.
Publisher: name: Colloquium-journal
Year: 2020
Subjects: proand prebiotics
Sinbacterium
Bifidobacterium
Lactobacterium
vegetable fillers
biological value.

description: Fermented milk products are known for their useful qualities. Products obtained in as a result of exposure of milk to beneficial bacteria, have a strengthening effect on the immune system, they also able to regulate bowel function, can be used as a prophylactic against colds and allergies. fermented milk products have an important advantage, which is the fact that it is transferred and absorbed is better than milk for most people, thanks to the fact that the constituents of milk are already partially starters fermented by microflora. In this work the composition of proand prebiotics, the influence of bifido-stimulating component and a stabilizing system on quality indicators of fermented dairy dessert products are scientifically justified. In addition, the technologies of fermented milk desserts are developed, based on consortium of bifidobacteria and lactobacilli using bifidobacteria growth stimulants, fruit and cereal fillers increasing nutrition and biological value of dessert products that form their organoleptic properties. The need to expand the range of the MDFP range is dictated today by the demographic situation in Ukraine (part of the elderly people in the general structure of the population is 20.5%, according to the forecasts of the Institute of Gerontology of the Academy of Medical Sciences of Ukraine until 2050 it will grow to 38.1%), an increase in the number of people with cardiovascular diseases, (up to 24.5 and 3.8%, respectively), the spread of secondary immunodeficient conditions complicated by gastrointestinal disturbances to half of the country's population. Therefore, the development of a new assortment of scientifically based MDFP technologies enriched with the complexes of lactoid cultures of bifidobacteria, biologically active substances (BAА), prebiotics is relevant for Ukraine and needs to be addressed.
Detection of noise-corrupted sinusoidal signals with Josephson junctions
Creators: name: Filatrella, Giovanni
name: Pierro, Vincenzo
Publisher: name: arXiv
Year: 2010
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: FOS: Physical sciences

description: We investigate the possibility of exploiting the speed and low noise features of Josephson junctions for detecting sinusoidal signals masked by Gaussian noise. We show that the escape time from the static locked state of a Josephson junction is very sensitive to a small periodic signal embedded in the noise, and therefore the analysis of the escape times can be employed to reveal the presence of the sinusoidal component. We propose and characterize two detection strategies: in the first the initial phase is supposedly unknown (incoherent strategy), while in the second the signal phase remains unknown but is fixed (coherent strategy). Our proposals are both suboptimal, with the linear filter being the optimal detection strategy, but they present some remarkable features, such as resonant activation, that make detection through Josephson junctions appealing in some special cases.
description: 22 pages, 13 figures
JUSTIFICATION OF FUNCTIONAL CONNECTION OF EFFICIENCY CRITERIA AND RATING OF OCCUPATIONAL SAFETY OF ENTERPRISE
Creators: name: Zaikina D.Р.
Publisher: name: Colloquium-journal
Year: 2020
Subjects: occupational safety
injury
business profits
functional connection

description: As the title implies the article describes parameters that influence the occupational safety and the amount of profit of enterprise. Attempts are made to describe mathematically of functional connection of efficiency criteria and rating of occupational safety of enterprise. On the example of mining enterprise PJSC «Kryv-baszalizrudkom», optimal and maximum amount of profit and the value of efficiency of occupational health and safety management systems have been determined. It is concluded that in order to select the optimal solu-tion, the economic mechanisms of measures to improve occupational safety should be determined primarily by the economic expression of the social importance of occupational safety.
LIPID METABOLISM PARAMETERS IN LAYING HENS WITH HEPATOSIS
Creators: name: Yaremchuk, V.Y.
name: Slivinska, L.G.
name: Lukashchuk, B.O.
Publisher: name: Colloquium-journal
Year: 2020
Subjects: laying hens
hepatosis
liver
blood serum
cholesterol
triglycerides
lipoproteins.

description: The article presents the results of lipid metabolism assessment in laying hens with determination of new hepatospecific tests for the diagnosis of functional and morphological changes in the liver. To achieve this goal, two groups of clinically healthy laying hens (control, n = 10) and two groups of laying hens with hepatosis (ex-perimental, n = 10) of the cross "Lohmann Brown" aged 224 and 300 days were formed. The evaluation criteria were the results of biochemical analysis of the blood serum. The level of lipoproteins (cholesterol, HDL, LDL, VLDL, triglycerides) and bile acids were determined. According to the results, the most informative diagnostic criterion to determine the nature and extent of the pathological process is a significant reduction in total cholesterol, the content of which in the experimental groups from the control groups in the two age groups with a high degree of reliability (p <0.001). An increased concentration of triglycerides in the serum in laying hens was established aged 224 days (27.4%; p <0.001) and 300 days (21.3%; p <0.001) comparing to the group of clinically healthy, which indicates an increase in their synthesis and development of fatty liver disease. In addition, increased of other lipid profile parameters in laying hens with hepatosis was established. At 224 days of age, the content of HDL, LDL and VLDL by 4.9 %, 60.5 % and 52 % compared to the control group. In laying hens aged 300 days, these parameters in the experimental group were also increased. Namely, HDL by 8.3%, LDL 13.9% and VLDL 25.6%, respectively, compared to the control group of this age. Such changes occur when the increase in lipogenesis exceeds the ability to synthesize and secrete lipoproteins. Increase serum concentration of bile acids in laying hens aged 224 days in 2.3 times and 300 days 2.1 times was established. It indicates a violation of the secretion of bile acids by hepatocytes and a decrease in the func-tional capacity of the liver. Basing on the results of research, changes in the lipid spectrum of the blood are an important additional diagnostic evaluation criterion of the liver functional state disorders in laying hens with hepatosis.
Boson mixing and flavor vacuum in the expanding Universe: a possible candidate for the dark energy
Creators: name: Capolupo, Antonio
name: Quaranta, Aniello
Publisher: name: arXiv
Year: 2023
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We analyze the boson mixing in curved spacetime and compute the expectation value of the energy-momentum tensor of bosons on the flavor vacuum in spatially flat Friedmann-Lemaitre-Robertson-Walker metrics. We show that the energy-momentum tensor of the flavor vacuum behaves as the effective energy-momentum tensor of a perfect fluid. Assuming a fixed de Sitter background, we show that the equation of state can assume values in the interval [-1, 1], and, in the flat spacetime limit has a value -1, which is the one of the dark energy. The results here presented show that vacuum of mixed bosons like neutrino super-partners, can represent a possible component of the dark energy of the Universe.
description: 19 pages, 2 figures
METHODS OF TEACHING THE USE OF ALGORITHMIC LANGUSGES-VBA IN SOLVING SOME PROBLEMS IN HIGH SCHOOL MATHEMATICS LESSONS.
Creators: name: Bashirova G., I.
Publisher: name: Colloquium-journal
Year: 2020
Subjects: Costants
Data Types
Directives
Events
Functions
Groups
Indexes/Lists
Methods
Miscellaneous
Objects
Operators
Properties
Statements.

description: This article dedicated to learning how to create effective software systems using all the capabilities of the Algorithmic Language.