cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Neutrino condensates at center of galaxies as background for the MSW mechanism
Creators: name: Capozziello, S.
name: Iovane, G.
name: Lambiase, G.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The possibility is explored that neutrino condensates, possible candidates for the explanation of very massive objects in galactic centers, could act as background for the Mikheyev-Smirnov-Wolfeinstein mechanism responsible of neutrino oscillations. Assuming a simple neutrino star model with constant density, the lower limit of the mass squared difference of neutrino oscillations is inferred. Consequences on neutrino asymmetry are discussed.
description: 5 pages, to appear in Mod. Phys. Lett. A
Perceived social variables related to physical activity levels in university students
Creators: name: Espinosa-Méndez, Claudia
name: Kluka, Darlene
name: Aguilar-Enríquez, Rodrigo
name: San Martin-Rodríguez, Sebastian
Publisher: name: The Health & Fitness Journal of Canada
Year: 2022

description: Purpose: The aim of this research was to analyze the social variables related to the level of physical activity with university students in Mexico. Methods: A cross-sectional study was conducted, in which an ad hoc survey was applied where data of study variables were collected: level of physical activity and social influences (parents, friends, teachers, neighborhood). The sample consisted of 400 university students (268 men and 132 women) between the ages of 16 and 30 years. Results: Descriptive and qualitative relationship analysis through crosstabs (chi square), using variable recoding showed that 75% of the respondents were at moderate to high physical activity levels, showing a positive relationship between the level of physical activity and the perception of it with friends (X2 .04), as well as dependent on parents and friends to encourage physical activity and that the neighborhood in which they live is safe (X2 .05) without difference between men and women. No positive associations were found relative to the importance that parents gave to physical activity or if they were physically active prior to, not linked to the existence of recreation areas near homes or if neighbors were physically active. There was also no link between the level of physical activity and the influence of teachers relative to physical activity encouragement. Conclusion: A higher level of physical activity exists when parents and friends encourage the person and when friends participate together in a safe neighborhood. Teachers, recreation areas near home, neighbors, and family members participating in physical activity show no influence on the level of physical activity of the person.
description: The Health & Fitness Journal of Canada, Vol. 14 No. 3 (2021): Proceedings from the 8th International Society for Physical Activity and Health Congress
Magnetization steps in a diluted Heisenberg antiferromagnetic chain: Theory and experiments on TMMC:Cd
Creators: name: Paduan-Filho, A.
name: Oliveira,, N. F.
name: Bindilatti, V.
name: Foner, S.
name: Shapira, Y.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Condensed Matter (cond-mat)
subject: FOS: Physical sciences

description: A theory for the equilibrium low-temperature magnetization M of a diluted Heisenberg antiferromagnetic chain is presented. The magnetization curve, M versus B, is calculated using the exact contributions of finite chains with 1 to 5 spins, and the "rise and ramp approximation" for longer chains. Some non-equilibrium effects that occur in a rapidly changing B, are also considered. Specific non-equilibrium models based on earlier treatments of the phonon bottleneck, and of spin flips associated with cross relaxation and with level crossings, are discussed. Magnetization data on powders of TMMC diluted with cadmium [i.e., (CH_3)_4NMn_xCd_(1-x)Cl_3, with 0.16<=x<=0.50 were measured at 0.55 K in 18 T superconducting magnets. The field B_1 at the first MST from pairs is used to determine the NN exchange constant, J, which changes from -5.9 K to -6.5 K as x increases from 0.16 to 0.50. The magnetization curves obtained in the superconducting magnets are compared with simulations based on the equilibrium theory. Data for the differential susceptibility, dM/dB, were taken in pulsed magnetic fields (7.4 ms duration) up to 50 T, with the powder samples in a 1.5 K liquid-helium bath. Non-equilibrium effects, which became more severe as x decreased, were observed. The non-equilibrium effects are tentatively interpreted using the "Inadequate Heat Flow Scenario," or to cross-relaxation, and crossings of energy levels, including those of excited states.
description: 16 pages, 14 figures
Abdominal obesity and its association with physical inactivity in Panamanian college students
Creators: name: Caballero, Luis
name: López, Alba
name: Silva, Gonzalo
Publisher: name: The Health & Fitness Journal of Canada
Year: 2022

description: Background: Abdominal obesity (AO) is an independent risk factor for cardiovascular disease. Physical inactivity (PI) has been determined by the World Health Organization (WHO) as a risk factor for obesity. Purpose: To assess the association between AO and PI in Panamanian college students. Methods: The sample comprises 374 college students, (263 women, 161 men; median age 20 years) from five different cities of a private university in Panamá. Every participant of the study signed written consent. The Global Physical Activity Questionnaire from WHO was utilized to collect data. AO was established as a waist circumference ≥80 cm in women and ≥90 cm in men. U Mann-Whitney and Chi-squared tests were used to compare differences by sex. Descriptive, as well as bivariate and multivariate analysis, were realized using logistic regression models. Results: 33.84% of participants had AO (no statistically significant difference was found by sex). 52.11% of women and 22.36% of men (<0.0001) showed PI. Men reported higher medians of minutes/week in occupational (<0.0001), leisure-time (<0.0001) and transport-related physical activity (<0.0150). After adjusting by gender, age and socioeconomic level, AO was associated with PI (OR: 1.762, IC 95%: 1.O40 – 2.985, p=0.035). Conclusions: Women reported higher levels of PI than men did. Students who evidenced PI were more likely to have AO. It is important to implement strategies to promote physical activity, especially in women, to avoid future cardiovascular risk. Funding: Study founded by Santo Tomás University and Del Istmo University (Project code: 1924011).
description: The Health & Fitness Journal of Canada, Vol. 14 No. 3 (2021): Proceedings from the 8th International Society for Physical Activity and Health Congress
Investigating Sensitive Issues in Class Through Randomized Response Polling
Creators: name: Genest, Christian
name: Hanley, James A.
name: Bhatnagar, Sahir R.
Publisher: name: Taylor & Francis
Year: 2024
Subjects: subject: Genetics
subject: FOS: Biological sciences
subject: Ecology
subject: Immunology
subject: FOS: Clinical medicine
subject: Biological Sciences not elsewhere classified
subject: Science Policy
subject: Plant Biology

description: This article provides an introduction to randomized response polling, a technique which was designed to allow for questioning on sensitive issues while protecting the respondent’s privacy and avoiding social desirability bias. It is described in terms that are suitable for presentation and use in any classroom environment. Instructions for plain users are included, along with the results of a small in-class implementation. The underpinnings of the method, which are laid out for the statistically savvy, illustrate the tradeoff between data acquisition and privacy protection. A few suitable references are also included for those who wish to dig further into the subject. Supplementary materials for this article are available online.
Prevalence of chronic non-communicable diseases in fitness centres users in Colombia
Creators: name: Avila, Andrea
name: Garcia Villamil, Shanen
name: Camargo Pinto, Leonardo
name: Sarmiento Rincón, Alejandro
Publisher: name: The Health & Fitness Journal of Canada
Year: 2022

description: Background: The failure to achieve the recommended amounts of physical activity increases the risk of developing non-communicable diseases (NCDs), yet around 43% of the world population is not sufficiently active. Health clubs and fitness centres (HCFC) are an interesting option to practice physical activity but little is known about the presence of users with NCDs. Purpose: To assess the prevalence of NCDs in members of 91 fitness centres that attended first-time medical consultation during 2019. Methodology: A cross-sectional descriptive study was conducted based on data collected through monthly self-report by medical doctors at a fitness company during 2019. Results: By December 2019, the number of members was 208.147 nationwide. The medical department evaluate 20.423 (9.8%) users in first-time visits from which 58 (0.2%) were between 13 and 15 years old, 1896 (9.2%) were 16 to 35, 2414 (9.8%) were 36 to 49 and 3829 (18.7%) were above 50 years old. 2702 (13.2%) reported high blood pressure, 169 (0.8%) reported coronary heart disease, 2262 (11%) were obese and 1991 (9.7%) had overweight, 325 (1.5%) reported dyslipidaemia and 748 (3.6%) diabetes. Conclusion: There is scarce information related to users with NCDs training in fitness centres. HCFC are places that represent a great opportunity to promote regular physical activity in individuals with NCDs. There is a need for HCFC to increase their participation as public health promoters. Funding: Bodytech is a Colombian HCFC with 91 facilities nationwide. Their services include physical training and free medical support by sports medicine physicians, physiotherapists and nutritionists.
description: The Health & Fitness Journal of Canada, Vol. 14 No. 3 (2021): Proceedings from the 8th International Society for Physical Activity and Health Congress
Collimated Outflow Formation via Binary Stars. 3-D Simulations of AGB Wind and Disk Wind Interactions
Creators: name: Garcia-Arredondo, F.
name: Frank, Adam
Publisher: name: arXiv
Year: 2003
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present three-dimensional hydrodynamic simulations of the interaction of a slow wind from an asymptotic giant branch(AGB) star and a jet blown by an orbiting companion. The jet or "Collimated Fast Wind" is assumed to originate from an accretion disk which forms via Bondi accretion of the AGB wind or Roche lobe overflow. We present two distinct regimes in the wind-jet interaction determined by the ratio of the AGB wind to jet momentum flux. Our results show that when the wind momentum flux overwhelms the flux in the jet a more dis-ordered outflow outflow results with the jet assuming a corkscrew pattern and multiple shock structures driven into the AGB wind. In the opposite regime the jet dominates and will drive a highly collimated narrow waisted outflow. We compare our results with scenarios described by Soker & Rappaport (2000) and extrapolate the structures observed in PNe and Symbiotic stars.
description: 22 pages, 8 figures, submitted to ApJ
Superstatistics, escort distributions, and applications
Creators: name: Beck, Christian
Publisher: name: arXiv
Year: 2003
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Superpositions of different statistics on different time or spatial scales (in short, superstatistics) can naturally lead to an effective description by nonextensive statistical mechanics. We first discuss the role of escort distributions within the superstatistical framework, and then briefly describe recent physical applications of this concept to turbulent and pattern forming systems.
description: 7 pages, 2 figures. Based on invited talk at LAWNP03 (Salvador)
Non-equilibrium phase transitions in $(1+1)$-dimensional quantum cellular automata with controllable quantum correlations
Creators: name: Gillman, Edward
name: Carollo, Federico
name: Lesanovsky, Igor
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Motivated by recent progress in the experimental development of quantum simulators based on Rydberg atoms, we introduce and investigate the dynamics of a class of $(1+1)$-dimensional quantum cellular automata. These non-equilibrium many-body models, which are quantum generalisations of the Domany-Kinzel cellular automaton, possess two key features: they display stationary behaviour and non-equilibrium phase transitions despite being isolated systems. Moreover, they permit the controlled introduction of local quantum correlations, which allows for the impact of quantumness on the dynamics and phase transition to be assessed. We show that projected entangled pair state tensor networks permit a natural and efficient representation of the cellular automaton. Here, the degree of quantumness and complexity of the dynamics is reflected in the difficulty of contracting the tensor network.
description: 9 pages, 6 figures; v2 - version accepted for publication
Methods and Problems of Teaching the Scientifically Gifted Junior High School Student
Creators: name: Bickford, Anita
Publisher: name: American University
Year: 2023

description: "For almost two centuries it has been recognized that Science is essential to the education of children in a democracy." It is a vital part of the education program, and increased emphasis has been put upon the role of science in our society. The gifted students are usually the future leaders of tomorrow's society, and the schools must make an extra effort to see that they are able to fulfill their obligations as future citizens. "Life for America's millions has been enriched immeasurable by the use to which the abilities of a few thousand gifted Americans have been put."
Methods and Problems of Teaching the Scientifically Gifted Junior High School Student
Creators: name: Bickford, Anita
Publisher: name: ProQuest
Year: 2023
Subjects: classificationCode: 39
subject: Education
classificationCode: 3904
subject: Specialist studies in education

description: "For almost two centuries it has been recognized that Science is essential to the education of children in a democracy." It is a vital part of the education program, and increased emphasis has been put upon the role of science in our society. The gifted students are usually the future leaders of tomorrow's society, and the schools must make an extra effort to see that they are able to fulfill their obligations as future citizens. "Life for America's millions has been enriched immeasurable by the use to which the abilities of a few thousand gifted Americans have been put."
A graph model for the evolution of specificity in humoral immunity
Creators: name: Flores, L. E.
name: Aguilar, E. J.
name: Barbosa, V. C.
name: de Carvalho, L. A. V.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Cell Behavior (q-bio.CB)
subject: FOS: Biological sciences

description: The immune system protects the body against health-threatening entities, known as antigens, through very complex interactions involving the antigens and the system's own entities. One remarkable feature resulting from such interactions is the immune system's ability to improve its capability to fight antigens commonly found in the individual's environment. This adaptation process is called the evolution of specificity. In this paper, we introduce a new mathematical model for the evolution of specificity in humoral immunity, based on Jerne's functional, or idiotypic, network. The evolution of specificity is modeled as the dynamic updating of connection weights in a graph whose nodes are related to the network's idiotypes. At the core of this weight-updating mechanism are the increase in specificity caused by clonal selection and the decrease in specificity due to the insertion of uncorrelated idiotypes by the bone marrow. As we demonstrate through numerous computer experiments, for appropriate choices of parameters the new model correctly reproduces, in qualitative terms, several immune functions.
Economics of Helicopter Operation in Scheduled Local Air Service
Creators: name: Reizenstein, Howard Hollander
Publisher: name: American University
Year: 2023

description: In the past few years it has become increasingly evident that the 13 American local service or "feeder" air carriers must secure a type of aircraft better suited to their needs than the ... DC-3 two-engined fixed-wing aircraft. Many members of the industry believe that transport-type helicopters, capable of arrival and departure from points located close to metropolitan centers, would enable the carriers to offer faster and more attractive short-haul air service than is now possible with the DC-3.
Secure Water Supply for UBC Vancouver Campus : Final Design Report
Creators: name: Chen, Zihao
name: Gu, Enyu
name: Hu, Jiachen
name: Han, Mingda
name: Wu, Chen
name: Wu, Jiehang
Publisher: name: The University of British Columbia
Year: 2018

description: The Iron Head Ltd. (IHL) has been contracted with SEEDS (Social Ecological Economic Development Studies) Sustainability Program to work towards a better water supply system. The design includes a 450mm ductile iron water main underneath University Boulevard; two 600mm ductile iron pipe underneath Wesbrook Mall; and two storage tanks that have a total combined volume of 12,600 m3. This report summarizes the design progress and critical outcomes after the preliminary design. Some of the highlights are as follows: total flow in the distribution system is 153 L/s; the highest and lowest pressure in distribution system is at 205.5 psi and 49 psi respectively; the structure system of the concrete storage tank consists of a slab-beam-column system with walls. More details about our design can be found in the attached report. The new cost estimation of the whole project is $15,198,386, which includes $13,923,961 for the storage and auxiliary facility construction, and $1,274,425 for the pipeline replacement. The project construction will commence on May 1st, 2018, and the substantial completion will be achieved on Feb. 12th, 2019, with the full operation coming up on Mar. 26th, 2019. Disclaimer: “UBC SEEDS provides students with the opportunity to share the findings of their studies, as well as their opinions, conclusions and recommendations with the UBC community. The reader should bear in mind that this is a student project/report and is not an official document of UBC. Furthermore readers should bear in mind that these reports may not reflect the current status of activities at UBC. We urge you to contact the research persons mentioned in a report or the SEEDS Coordinator about the current status of the subject matter of a project/report.”
Physical activity levels and dietary patterns of Brazilians living in Canada
Creators: name: Schwartz, Juliano
name: Perotto, Maira Botelho
name: Bredin, Shannon
name: Oh, Paul
name: Rhodes, Ryan
name: Zanzin, Mariana De Assis
name: Couto, Emanuel
name: Botteon, Malcon
name: Gaytán-González, Alejandro
name: Markman, Flavia
name: Warburton, Darren
Publisher: name: The Health & Fitness Journal of Canada
Year: 2022

description: Background: The health benefits of routine physical activity and good dietary practices are clear. While Canada is a multi-cultural nation that welcomes immigrants from around the world, little is known about lifestyle behaviours of South Americans living in the country. Purpose: To examine levels of physical activity and fruit and vegetable consumption patterns of South American immigrants from Brazil, living in Vancouver. Methods: Recruited through social media postings, 84 Brazilians (68% women), aged 21-57 y (mean ± SD = 35 ± 6 y), reported their amount of moderate to vigorous physical activity (MVPA) and daily produce consumption. Results: A total of 76 (90.5%) participants did not meet the World Health Organization (WHO) guidelines on physical activity of a minimum of 150 minutes of MVPA per week. Also, 77 (91.5%) participants did not meet the recommendations of a combined consumption of a minimum of five servings of fruits and vegetables per day, as per the WHO global action plan for the prevention and control of chronic diseases. Conclusion: The vast majority of the participants reported low levels of physical activity and a suboptimal diet. These results emphasize the need for culturally appropriate initiatives to promote healthy lifestyle behaviours within this population. Funding: This work was supported by funding from CAPES (grant 2185-15-6), the Canadian Institutes of Health Research (CIHR IA5-156528), and the Natural Sciences and Engineering Research Council of Canada (NSERC RGPIN-2018-04613).
description: The Health & Fitness Journal of Canada, Vol. 14 No. 3 (2021): Proceedings from the 8th International Society for Physical Activity and Health Congress
Secure Water Supply for UBC
Creators: name: Cheng, Jordan
name: Garmaeva, Oiuna
name: Gu, Kevin
name: Hsu, Andy
name: Song, James
name: Zhuang, Carol
Publisher: name: The University of British Columbia
Year: 2018

description: GTEN Engineering Consultants are pleased to present the final technical design for the UBC Water Supply System in the following report. It is important to supply safe drinking water in all situations, especially with the growth of the UBC campus. Currently, the primary supply of water cannot be guaranteed in all emergency situations from the primary water mains connecting to the Sasamat Reservoir. The purpose of this report is to provide a technical design that meets all design criteria and requirements and provide the details required for the construction of the two water storage tanks. In response to UBC’s concerns, the objective is to secure the water supply in the event of a failure of the current supply system, and the demand for the future population growth by a introducing water storage solution. The key considerations and issues for developing designs include an increasing population, infrastructure constraints, soil geology, materials, technical guidelines, cost, environmental issues, and community impacts. The final design of the Water Supply System consists of two separate storage tanks with capacities of 9,000,000 L and 6,125,000 L. The first tank is located under University Village field, and the second tank is located under Rashpal Dhillon Track and Field Oval. The storage capacity provides drinking water to 24,000 people for up to three days. Two separate tanks allow a more resilient life to the community. Construction will begin on April 23rd, 2018 and be completed by July 5th, 2018. The total cost of the project of the selected design is $5,200,000, which includes the cost of initial planning as well as the completion of construction. Disclaimer: “UBC SEEDS provides students with the opportunity to share the findings of their studies, as well as their opinions, conclusions and recommendations with the UBC community. The reader should bear in mind that this is a student project/report and is not an official document of UBC. Furthermore readers should bear in mind that these reports may not reflect the current status of activities at UBC. We urge you to contact the research persons mentioned in a report or the SEEDS Coordinator about the current status of the subject matter of a project/report.”
Impacts of COVID-19 on Indigenous Communities in Canada
Creators: name: Benji, Jocelyn
name: Tomasky, Gemma
name: Kaufman, Kai
name: Miles, Rosalin
Publisher: name: The Health & Fitness Journal of Canada
Year: 2022

description: Background: The coronavirus disease (COVID-19) is an infectious and potentially deadly virus with growing research examining the mechanism of outbreak and community spread. It is commonly spread through respiratory droplets. This virus has caused a global pandemic declared on March 11, 2020, which has initiated and continues to cause negative health and wellness effects worldwide. This pandemic had led to a closure of social infrastructures, local businesses, and financial instability. Purpose: The purpose of this literature review was to explore the experiences and responses to COVID-19 for Indigenous communities in Canada, specifically looking at the physical health and wellness in these communities. Methods: A literature review was first conducted in March 2020, and was updated in June, 2021. Results: An infographic was created after a review of the literature. Many Indigenous communities in Canada experience the disproportional effects from historical and ongoing health pandemics due to factors such as social determinants of health, the effects of intergenerational trauma, and systemic racism. Indigenous communities have found strengths in community-led initiatives that focus on promoting overall spiritual, mental, physical, and emotional wellbeing. Conclusion: Indigenous communities in Canada are successfully persevering through the COVID-19 pandemic by maintaining culturally relevant connections with family-centered and land-based approaches to physical health and wellness that have been practiced for generations. Funding: Not applicable
description: The Health & Fitness Journal of Canada, Vol. 14 No. 3 (2021): Proceedings from the 8th International Society for Physical Activity and Health Congress
Photoionized OVI absorbers toward the bright QSO HE 0515-4414
Creators: name: Levshakov, S. A.
name: Agafonova, I. I.
name: Reimers, D.
name: Baade, R.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report on detailed Monte Carlo inversion analysis of five OVI systems from the spectrum of the bright quasar HE 0515-4414 (z_e = 1.71). The associated system at z_a = 1.697 with the neutral hydrogen column density N(HI)= 4.4 10^{13} cm^{-2} shows pronounced absorption from highly ionized transitions of CIII, CIV, NV, OVI, SiIV, and probably SVI. We found that only a power law type ionizing spectrum (J_nu propto nu^{-1.5}) is consistent with the observed sample of the line profiles, i.e. the system is definitely intrinsic. The relative metal abundances give almost the solar pattern and the metallicity of about 5 times solar. The system originates in a thin shell of the line-of-sight thickness L <= 16 pc. Two OVI systems at z_a = 1.674 ([C/H] = -1.6) and 1.602 ([O/H] = -1.1), arising in intervening halos, have linear sizes of L = 3-14 kpc and 17 kpc, respectively. Absorption systems at z_a = 1.385 ([C/H] = -0.3, L = 1.7-2.5 kpc) and z_a = 1.667 ([C/H] = -0.5, L = 1 kpc) exhibit characteristics very similar to that observed in metal-enriched high velocity clouds in the Milky Way.These systems are probably embedded in extremely metal-poor halos with [C/H] < -2.4 (z_a = 1.667) and [C/H] < -3.7 (z_a = 1.385). We also found two additional extremely metal-poor Ly-alpha systems at z_a = 1.500 and 1.681 with, respectively, N(HI) = 1.7 10^{15} and 1.8 10^{15} cm^{-2} and [C/H] < -4.0 and 10^5 K is negligible in these systems.
description: 16 pages, including 11 PostScript figures. Accepted for publication in A&A
Numerical method for the projected Gross--Pitaevskii equation in an infinite rotating 2D Bose gas
Creators: name: Doran, R.
name: Billam, T. P.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We present a method for evolving the projected Gross-Pitaevskii equation in an infinite rotating Bose-Einstein condensate, the ground state of which is a vortex lattice. We use quasi-periodic boundary conditions to investigate the behaviour of the bulk superfluid in this system, in the absence of boundaries and edge effects. We also give the Landau gauge expression for the phase of a BEC subjected to these boundary conditions. Our spectral representation uses the eigenfunctions of the one-body Hamiltonian as basis functions. Since there is no known exact quadrature rule for these basis functions we approximately implement the projection associated with the energy cut-off, but show that by choosing a suitably fine spatial grid the resulting error can be made negligible. We show how the convergence of this model is affected by simulation parameters such as the size of the spatial grid and the number of Landau levels. Adding dissipation, we use our method to find the lattice ground state for $N$ vortices. We can then perturb the ground-state, in order to investigate the melting of the lattice.
description: Version 2, updated 3rd September 2020. 14 pages, 8 figures
Quenched chirality in RbNiCl$_3$
Creators: name: Rheinstädter, Maikel C.
name: McIntyre, Garry J.
name: Enderle, Mechthild
Publisher: name: arXiv
Year: 2004
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: The critical behaviour of stacked-triangular antiferromagnets has been intensely studied since Kawamura predicted new universality classes for triangular and helical antiferromagnets. The new universality classes are linked to an additional discrete degree of freedom, chirality, which is not present on rectangular lattices, nor in ferromagnets. However, the theoretical as well as experimental situation is discussed controversially, and generic scaling without universality has been proposed as an alternative scenario. Here we present a careful investigation of the zero-field critical behaviour of RbNiCl$_3$, a stacked-triangular Heisenberg antiferromagnet with very small Ising anisotropy. From linear birefringence experiments we determine the specific heat exponent $α$ as well as the critical amplitude ratio $A^+/A^-$. Our high-resolution measurements point to a single second order phase transition with standard Heisenberg critical behaviour, contrary to all theoretical predictions. From a supplementary neutron diffraction study we can exclude a structural phase transition at T$_N$. We discuss our results in the context of other available experimental results on RbNiCl$_3$ and related compounds. We arrive at a simple intuitive explanation which may be relevant for other discrepancies observed in the critical behaviour of stacked-triangular antiferromagnets. In RbNiCl$_3$ the ordering of the chirality is suppressed by strong spin fluctuations, yielding to a different phase diagram, as compared to e.g.\@ CsNiCl$_3$, where the Ising anisotropy prevents these fluctuations.
The effect of contact torques on porosity of cohesive powders
Creators: name: Bartels, Guido
name: Unger, Tamas
name: Kadau, Dirk
name: Wolf, Dietrich E.
name: Kertesz, Janos
Publisher: name: arXiv
Year: 2004
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The porosity of uniaxially compacted cohesive powders depends on the applied stress (including gravity). The case, where these stresses are weak, is considered. The compaction results in a porosity which is a function of sliding, rolling and torsion friction. By contact dynamics simulations it is shown that the influences of contact torques (static rolling and torsion friction) on the porosity are significant and approximately additive. The relevance for nano-powder pressure sintering is discussed.
description: 5 pages, 5 figures
Reducing urban traffic congestion due to localized routing decisions
Creators: name: Li, Bo
name: Saad, David
name: Lokhov, Andrey Y.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Optimization and Control (math.OC)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: Balancing traffic flow by influencing drivers' route choices to alleviate congestion is becoming increasingly more appealing in urban traffic planning. Here, we introduce a discrete dynamical model comprising users who make their own routing choices on the basis of local information and those who consider routing advice based on localized inducement. We identify the formation of traffic patterns, develop a scalable optimization method for identifying control values used for user guidance, and test the effectiveness of these measures on synthetic and real-world road networks.
Economics of Helicopter Operation in Scheduled Local Air Service
Creators: name: Reizenstein, Howard Hollander
Publisher: name: ProQuest
Year: 2023
Subjects: classificationCode: 3509
subject: Transportation, logistics and supply chains
classificationCode: 38
subject: Economics

description: In the past few years it has become increasingly evident that the 13 American local service or "feeder" air carriers must secure a type of aircraft better suited to their needs than the ... DC-3 two-engined fixed-wing aircraft. Many members of the industry believe that transport-type helicopters, capable of arrival and departure from points located close to metropolitan centers, would enable the carriers to offer faster and more attractive short-haul air service than is now possible with the DC-3.
What They Remember May Not Be What They Understand: A Study of Mnemonic Recall and Performance by Introductory Statistics Students
Creators: name: Mocko, Megan
name: Wagler, Amy E.
name: Lesser, Lawrence M.
name: Francis, Wendy S.
name: Blush, Jennifer M.
name: Schleicher, Karly
name: Barrientos, Patricia S.
Publisher: name: Taylor & Francis
Year: 2024
Subjects: subject: Ecology
subject: FOS: Biological sciences
subject: Biological Sciences not elsewhere classified
subject: Science Policy

description: A large-scale (n = 1323) survey of mnemonic recall, self-reported familiarity, cued explanation, and application by introductory statistics students was conducted at a large research university in the southeastern United States. The students were presented 14 mnemonics during the fall 2017 term. Different nonoverlapping cohorts of students were asked at different time points to complete a survey about mnemonic use. At each time point, the students were asked to recall any mnemonic that they remembered, explain the mnemonic when cued, self-report their degree of familiarity, and apply the mnemonic. Of the 14 mnemonics, acronym-type mnemonics were recalled more frequently, but longer phrase-type mnemonics were explained and applied more often. These findings suggest that instructors should provide scaffolding to move a student from recalling a mnemonic to using a mnemonic toward successful completion of the statistics problem at hand.
ВЛИЯНИЕ СТЕПЕНИ УПЛОТНЕНИЯ ЭЛЕКТРОДОВ НА УДЕЛЬНУЮ ЕМКОСТЬ УГЛЕРОДНЫХ АНОДНЫХ МАТЕРИАЛОВ ЛИА
Creators: name: Шкиндеров, Максим
Publisher: name: ООО Цифра
Year: 2025
Subjects: lithium-ion battery
electrode
chemical power source
литий-ионный аккумулятор
электрод
химический источник тока

description: Международный научно-исследовательский журнал, Выпуск 4 (154) 2025
Anomalous electromagnetic moments of $τ$ lepton in $γγ\to τ^+ τ^-$ reaction in Pb+Pb collisions at the LHC
Creators: name: Dyndal, Mateusz
name: Klusek-Gawenda, Mariola
name: Schott, Matthias
name: Szczurek, Antoni
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We discuss the sensitivity of the $γγ\to τ^+ τ^-$ process in ultraperipheral Pb+Pb collisions on the anomalous magnetic ($a_τ$) and electric ($d_τ$) moments of $τ$ lepton at LHC energies. We derive the corresponding cross sections by folding the elementary cross section with the heavy-ion photon fluxes and considering semi-leptonic decays of both $τ$ leptons in the fiducial volume of ATLAS and CMS detectors. We present predictions for total and differential cross sections, and for the ratios to $γγ\to e^+ e^- (μ^+ μ^-$) process. These ratios allow to cancel theoretical and experimental uncertainties when performing precision measurement of $a_τ$ at the LHC. The expected limits on $a_τ$ with existing Pb+Pb dataset are found to be better by a factor of two comparing to current best experimental limits and can be further improved by another factor of two at High Luminosity LHC.
description: 18 pages, 10 figures, the second version contains a study of the spin correlation effect
An S2 Fluorescence Model for Interpreting High-Resolution Cometary Spectra. I. Model Description and Initial Results
Creators: name: Reylé, C.
name: Boice, D. C.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: A new versatile model providing S2 fluorescence spectrum as a function of time is developed with the aim of interpreting high resolution cometary spectra. For the S2 molecule, it is important to take into account both chemical and dynamic processes because S2 has a short lifetime and is confined in the inner coma where these processes are most important. The combination of the fluorescence model with a global coma model allows for the comparison with observations of column densities taken through an aperture and for the analysis of S2 fluorescence in different parts of the coma. Moreover, the model includes the rotational structure of the molecule. Such a model is needed for interpreting recent high spectral resolution observations of cometary S2. A systematic study of the vibrational-rotational spectrum of S2 is undertaken, including relevant effects, such as non-equilibrium state superposition and the number density profile within the coma due to dynamics and chemistry, to investigate the importance of the above effects on the scale length and abundance of S2 in comets.
description: 20 pages, 7 figures
Delinquency and Its Prevention by the School
Creators: name: Mortazavi, Shamsi
Publisher: name: American University
Year: 2023

description: Delinquency is prevalent in every nation in the world. The problem is evident both in the up-to-sixteen year old age group as well as in the sixteen to twenty-one year group (or older). Teeters and Rememann have shown that in the U.S.A. 54.8 percent of delinquents are less than twenty-one years of age.Delinquency starts when youth finds some insecurity during his earlier years and when parents and school officials fail to diagnose or treat this and other behavior patterns as pre-delinquent manifestations.The probglem of delinquency is an old one. It has always been an indigenous disease of society.
Additional file 3 of Examining user fee reductions in public primary healthcare facilities in Kenya, 1997–2012: effects on the use and content of antenatal care
Creators: name: Dennis, Mardieh L.
name: Benova, Lenka
name: Goodman, Catherine
name: Barasa, Edwine
name: Abuya, Timothy
name: Campbell, Oona M. R.
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Cell Biology
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology
subject: FOS: Biological sciences
subject: Cancer
subject: Science Policy
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: Cardiology

description: Additional file 3. Mean gestational age calculations.
Delinquency and Its Prevention by the School
Creators: name: Mortazavi, Shamsi
Publisher: name: ProQuest
Year: 2023
Subjects: classificationCode: 39
subject: Education
classificationCode: 3904
subject: Specialist studies in education

description: Delinquency is prevalent in every nation in the world. The problem is evident both in the up-to-sixteen year old age group as well as in the sixteen to twenty-one year group (or older). Teeters and Rememann have shown that in the U.S.A. 54.8 percent of delinquents are less than twenty-one years of age.Delinquency starts when youth finds some insecurity during his earlier years and when parents and school officials fail to diagnose or treat this and other behavior patterns as pre-delinquent manifestations.The probglem of delinquency is an old one. It has always been an indigenous disease of society.
Microscopic theory for nematic fractional quantum Hall effect
Creators: name: Yang, Bo
Publisher: name: arXiv
Year: 2020
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We analyse various microscopic properties of the nematic fractional quantum Hall effect (FQHN) in the thermodynamic limit, and present necessary conditions required of the microscopic Hamiltonians for the nematic FQHE to be robust. Analytical expressions for the degenerate ground state manifold, ground state energies, and gapless nematic modes are given in compact forms with the input interaction and the corresponding ground state structure factors. We relate the long wavelength limit of the neutral excitations to the guiding center metric deformation, and show explicitly the family of trial wavefunctions for the nematic modes with spatially varying nematic order near the quantum critical point. For short range interactions, the dynamics of the FQHN is completely determined by the long wavelength part of the ground state structure factor. The special case of the FQHN at $ν=1/3$ is discussed with new theoretical insights from the Haffnian parent Hamiltonian, leading to a number of rigorous statements and experimental implications.
description: 9 pages, 5 figures, published version, comments very welcome
Additional file 2 of Metabolic profiling and scavenging activities of developing circumscissile fruit of psyllium (Plantago ovata Forssk.) reveal variation in primary and secondary metabolites
Creators: name: Patel, Manish Kumar
name: Mishra, Avinash
name: Santlal Jaiswar
name: Bhavanath Jha
Publisher: name: figshare
Year: 2020
Subjects: subject: Biochemistry
subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: Developmental Biology
subject: Plant Biology

description: Additional file 2: Table S2. Basic chemical structure of metabolites identified in developing fruits of psyllium.
From talking dogs to personalized medicine: The weird and wonderful history of inheritance and pharmacogenomics from pups to people
Creators: name: Shaw, Pamela L
Publisher: name: DigitalHub. Galter Health Sciences Library
Year: 2015
Subjects: subject: dogs
subject: pharmacogenomics
subject: canine evolution
subject: Dogs
subject: Pharmacogenetics
subject: Inheritance Patterns
subject: Models, Animal
subject: Dogs
subject: Pharmacogenomics
subject: FOS: Medical biotechnology
subject: Pharmacogenetics--Animal models

description: A presentation made at the Medical Library Association annual conference in May 2015. The topic was the importance of the dog as a model in inheritance and disease.
description: presentation_location: Austin, Texas, United States
The effectiveness of an Indigenous led, community-based physical activity intervention on cardio-metabolic health in Indigenous adults
Creators: name: Bredin, Shannon
name: De Faye, Amanda
name: Foulds, Heather
name: Miles, Rosalin
name: Warburton, Darren
Publisher: name: The Health & Fitness Journal of Canada
Year: 2022

description: Background: Despite the growing awareness of the health disparities faced by Indigenous communities in Canada, limited research exists on how to enhance the cardio-metabolic health of Indigenous peoples in culturally appropriate ways. Purpose: To evaluate the effectiveness of an Indigenous led, community-based walking and running physical activity (PA) program on improving health-related physical fitness and other risk factors for cardio-metabolic disease. Methods: A total of 87 adults (44.6 ± 14.9 yr) of varying health status, PA, and fitness levels participated. Six Indigenous communities in the province of British Columbia co-led the 13-wk PA intervention including weekly running and walking sessions delivered by Indigenous community members. Aerobic fitness (6 min walk test), grip strength, PA behaviour (Godin-Shephard Leisure-Time Physical Activity Questionnaire), waist circumference, blood pressure, and fasting total cholesterol, high density lipoprotein, glucose, and A1C were assessed pre-and post-training. Complete post-training data was available in 52 (60%) participants. Results: With training (Mean ± SD) there were significant improvements in aerobic fitness (26.9 ± 8.0 vs. 29.1 ± 8.3 mL/kg/min), PA (% Active 27.5% vs. 39.2%), grip strength (60.9 ± 21.3 vs. 66.2 ± 21.5 kg), waist circumference (112.2 ± 19.2 vs. 109.5 ± 16.1 cm), and mean arterial blood pressure (99.4 ± 22.9 vs. 93.6 ± 16.4 mmHg), respectively. The greatest changes (p<0.05) in health-related physical fitness were seen in the participants starting the program within the lowest fitness category. There were no significant changes in lipid lipoprotein profile or markers of glucose homeostasis. Conclusions: An Indigenous led, community-based PA program was effective at improving the cardio-metabolic profile of Indigenous adults. This work supports the importance of community-based, participatory, Indigenous led health and wellness interventions. Funding: Study funded by Canadian Institutes of Health Research Grant #IA5-156528.
description: The Health & Fitness Journal of Canada, Vol. 14 No. 3 (2021): Proceedings from the 8th International Society for Physical Activity and Health Congress
Metallicity, planetary formation and migration
Creators: name: Livio, M.
name: Pringle, J. E.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Recent observations show a clear correlation between the probability of hosting a planet and the metallicity of the parent star. Since radial velocity surveys are biased, however, towards detecting planets with short orbital periods, the probability-metallicity correlation could merely reflect a dependence of migration rates on metallicity. We investigated the possibility, but find no basis to suggest that the migration process is sensitive to the metallicity. The indication is, therefore, that a higher metallicity results in a higher probability for planet formation.
description: 4 pages
Additional file 1 of Metabolic profiling and scavenging activities of developing circumscissile fruit of psyllium (Plantago ovata Forssk.) reveal variation in primary and secondary metabolites
Creators: name: Patel, Manish Kumar
name: Mishra, Avinash
name: Santlal Jaiswar
name: Bhavanath Jha
Publisher: name: figshare
Year: 2020
Subjects: subject: Biochemistry
subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: Developmental Biology
subject: Plant Biology

description: Additional file 1: Table S1. Amino-acid composition of developing fruiting body of psyllium.