cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Structure and superconductivity of two different phases of Re3W
Creators: name: Biswas, P. K.
name: Lees, M. R.
name: Hillier, A. D.
name: Smith, R. I.
name: Marshall, W. G.
name: Paul, D. McK.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Two superconducting phases of Re3W have been found with different physical properties. One phase crystallizes in a non-centrosymmetric cubic (alpha-Mn) structure and has a superconducting transition temperature, Tc, of 7.8 K. The other phase has a hexagonal centrosymmetric structure and is superconducting with a Tc of 9.4 K. Switching between the two phases is possible by annealing the sample or remelting it. The properties of both phases of Re3W have been characterized by powder neutron diffraction, magnetization, and resistivity measurements. The temperature dependence of the lower and the upper critical fields have been measured for both phases. These are used to determine the penetration depths and the coherence lengths for these systems.
description: 6 pages, to appear in Physical Review B
Characterization and Multiscale Modeling of the Mechanical Properties for FDM-Printed Copper-Reinforced PLA Composites
Creators: name: Özen, Arda
name: Ganzosch, Gregor
name: Völlmecke, Christina
name: Auhl, Dietmar
Publisher: name: Technische Universität Berlin
Year: 2022
Subjects: subject: 540 Chemie und zugeordnete Wissenschaften
subject: additive manufacturing
subject: multiscale homogenization
subject: polymer composites
subject: finite element method
subject: fused deposition modeling
subject: machine learning
subject: digital image correlation
subject: FDM

description: Additive manufacturing is an emerging technology and provides high design flexibility to customers. Fused deposition modeling (FDM) is an economical and promising additive manufacturing method. Due to its many advantages, FDM received great attention in recent years, and comprehensive studies are being undertaken to investigate the properties of FDM-printed polymers and polymer composites. As a result of the manufacturing technology employed in FDM, inner structures are changed with different process parameters, and thus, anisotropic properties are observed. Moreover, composite filaments such as particle- or fiber-reinforced polymers already have anisotropy before FDM printing. In this study, we investigate the effect of different process parameters, namely layer thickness and raster width on FDM-printed copper-reinforced poly(lactic acid) (PLA). Mechanical characterizations with a high-resolution camera are carried out for analyzing the deformation behaviors. Optical microscopy characterizations are performed to observe the mesostructural changes with various process parameters. Scanning electron microscopy (SEM) and an energy-dispersive X-ray spectroscopy (EDS) analysis are conducted for investigating the microstructure, specifically, copper particles in the PLA matrix. A 2D digital image correlation code with a machine learning algorithm is applied to the optical characterization and SEM-EDS images. In this way, micro- and mesostructural features, as well as the porosity ratios of the specimens are investigated. We prepare the multiscale homogenization by finite element method (FEM) simulations to capture the material’s response, both on a microscale and a mesoscale. We determined that the mesostructure and, thereby, the mechanical properties are significantly changed with the aforementioned process parameters. A lower layer thickness and a greater raster width led to a higher elasticity modulus and ultimate tensile strength (UTS). The optical microscopy analysis verified this statement: Decreasing the layer thickness and increasing the raster width result in larger contact lines between adjacent layers and, hence, lower porosity on the mesoscale. Realistic CAD images were prepared regarding the mesostructural differences and porosity ratios. Ultimately, all these changes are accurately modeled with mesoscale and multiscale simulations. The simulation results are validated by laboratory experiments.
Discretization of asymptotic line parametrizations using hyperboloid patches
Creators: name: Huhnen-Venedey, Emanuel
name: Rörig, Thilo
Publisher: name: arXiv
Year: 2011
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics

description: Two-dimensional affine A-nets in 3-space are quadrilateral meshes that discretize surfaces parametrized along asymptotic lines. The characterizing property of A-nets is planarity of vertex stars, so for generic A-nets the elementary quadrilaterals are skew. We classify the simply connected affine A-nets that can be extended to continuously differentiable surfaces by gluing hyperboloid surface patches into the skew quadrilaterals. The resulting surfaces are called "hyperbolic nets" and are a novel piecewise smooth discretization of surfaces parametrized along asymptotic lines. It turns out that a simply connected affine A-net has to satisfy one combinatorial and one geometric condition to be extendable - all vertices have to be of even degree and all quadrilateral strips have to be "equi-twisted". Furthermore, if an A-net can be extended to a hyperbolic net, then there exists a 1-parameter family of such C^1-surfaces. It is briefly explained how the generation of hyperbolic nets can be implemented on a computer. The article uses the projective model of Pluecker geometry to describe A-nets and hyperboloids.
description: 27 pages, 17 figures
Tests of gravitational-wave birefringence with the open gravitational-wave catalog
Creators: name: Wang, Yi-Fan
name: Brown, Stephanie M.
name: Shao, Lijing
name: Zhao, Wen
Publisher: name: Ridge, NY : American Physical Society
Year: 2022
Subjects: subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: We report the results of testing gravitational-wave birefringence using the largest population of gravitational-wave events currently available. Gravitational-wave birefringence, which can arise from the effective field theory extension of general relativity, occurs when the parity symmetry is broken, causing the left- and right-handed polarizations to propagate following different equations of motion. We perform Bayesian inference on the 94 events reported by the 4th-Open Gravitational-wave Catalog (4-OGC) using a parity-violating waveform. We find no evidence for a violation of general relativity in the vast majority of events. However, the most massive event, GW190521, and the second most massive event, GW191109, show intriguing nonzero results for gravitational-wave birefringence. We find that the probability of association between GW190521 and the possible electromagnetic (EM) counterpart reported by Zwicky Transient Facility (ZTF) is increased when assuming birefringence. Excluding GW190521 and GW191109, the parity-violating energy scale is constrained to MPV>0.05 GeV at 90% credible interval, which is an improvement over previous results from twelve events by a factor of five. We discuss the implications of our results on modified gravity and possible alternative explanations such as waveform systematics. More detections of massive binary black hole mergers from the upcoming LIGO/Virgo/KAGRA run will shed light on the true origin of the apparent birefringence.
Compositions
Creators: name: Ritter, Martin
Publisher: name: University of British Columbia
Year: 2009

description: This thesis consist of six original compositions, which were performed on Feb. 7, 08; April 16, 08; March 21, 09; April 13, 08; Sept. 26, 08; April 7, 09. The total duration of the works is approximately 50 minutes. The compositions are: Annabel Lee, Na Krstu Sam Te Nasao, Summer’s Day Winder’s Night, Breathless, Fall Fanfare, Say What?
Socio-economic classification of prairie towns in 1971
Creators: name: Welling, Steven Lawrence
Publisher: name: University of Calgary
Year: 1977
Subjects: subject: HC 117 P8 W44 1977 Microfiche
subject: Prairie Provinces - Economic conditions
subject: Prairie Provinces - Social conditions
subject: Cities and towns - Prairie Provinces

description: Bibliography: p. 115-119.
The Turbulence Spectrum of Molecular Clouds in the Galactic Ring Survey: A Density-Dependent PCA Calibration
Creators: name: Roman-Duval, Julia
name: Federrath, Christoph
name: Brunt, Christopher
name: Heyer, Mark
name: Jackson, James
name: Klessen, Ralf
Publisher: name: arXiv
Year: 2011
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Turbulence plays a major role in the formation and evolution of molecular clouds. The problem is that turbulent velocities are convolved with the density of an observed region. To correct for this convolution, we investigate the relation between the turbulence spectrum of model clouds, and the statistics of their synthetic observations obtained from Principal Component Analysis (PCA). We apply PCA to spectral maps generated from simulated density and velocity fields, obtained from hydrodynamic simulations of supersonic turbulence, and from fractional Brownian motion fields with varying velocity, density spectra, and density dispersion. We examine the dependence of the slope of the PCA structure function, alpha_PCA, on intermittency, on the turbulence velocity (beta_v) and density (beta_n) spectral indexes, and on density dispersion. We find that PCA is insensitive to beta_n and to the log-density dispersion sigma_s, provided sigma_s < 2. For sigma_s>2, alpha_PCA increases with sigma_s due to the intermittent sampling of the velocity field by the density field. The PCA calibration also depends on intermittency. We derive a PCA calibration based on fBms with sigma_s<2 and apply it to 367 CO spectral maps of molecular clouds in the Galactic Ring Survey. The average slope of the PCA structure function, =0.62\pm0.2, is consistent with the hydrodynamic simulations and leads to a turbulence velocity exponent =2.06\pm0.6 for a non-intermittent, low density dispersion flow. Accounting for intermittency and density dispersion, the coincidence between the PCA slope of the GRS clouds and the hydrodynamic simulations suggests beta_v~1.9, consistent with both Burgers and compressible intermittent turbulence.
Modeling of the mechanical properties of fused deposition modeling (FDM) printed fiber reinforced thermoplastic composites by asymptotic homogenization
Creators: name: Özen, Arda
name: Auhl, Dietmar
Publisher: name: Technische Universität Berlin
Year: 2022
Subjects: subject: 540 Chemie und zugeordnete Wissenschaften
subject: Fused deposition modeling
subject: FDM
subject: Finite Element Method
subject: FEM
subject: fiber-reinforced polymer composites

description: Fused deposition modeling (FDM) is a low-cost additive manufacturing method with moderate tolerances and high design flexibility. Ample studies are being undertaken for modeling the mechanical properties of FDM by using the Finite Element Method (FEM). The process technique of FDM results in anisotropic inner structures that are affected by the chosen manufacturing parameters. Moreover, composite filaments, such as fiber-reinforced polymers, have anisotropy even in filament form before FDM printing. These anisotropic effects are needed to be examined and incorporated for an adequate model. In order to speed up the design stage, we aim to prepare a practical method for simulating the mechanical properties of FDM-printed fiber-reinforced polymer composites. In this work, we computed the homogenized material properties for various fiber lengths, fiber volume percentages, and fiber orientations by asymptotic homogenization at the microscale. Then, mesoscale simulations are carried out through FEM simulations by incorporating the influences of process parameters. In this way, we demonstrate the effect of various micro- and mesostructural features on the homogenized properties step by step.
DEVELOPMENT OF THE CHILD'S GIFTEDNESS AND INTELLIGENCE IN DIFFERENT PERIODS
Creators: name: Joukova, Elena
name: Bogoyavlenskaya, Diana
Publisher: name: Материалы Международного психологического форума «Ребенок в цифровом мире»
Year: 2022
Subjects: giftedness
intelligence
development
virtual technologies

description: Abstract: Relevance. The integration of modern technologies in all spheres of life makes psychologists study the influence of new conditions on the development of child's personality. The aim of the study was to compare the levels of intelligence and giftedness within the same educational institution in samples with a time difference from 3 to 23 years. The level of intelligence was assessed by the success of mastering the activity by solving the problem. Giftedness was defined as the ability to create, which is understood as the development of one's own initiative. Research methods and sampling. The method "Creative field", presented in the method "Animals in the circus" (Bogoyavlenskaya D.B.) allowed exploration of the level of intelligence and giftedness. The samples were groups of children aged 6 and 9 years: preschoolers in 1997 33 people, 2016 61 people, junior schoolchildren: 1999 21 people, 2014 – 53 people, 2018 28 people, 2022 18 people. The main results. In 1997, preschool children with intellectual problems accounted for 5%, with 23% gifted children. In 2016, we see an increase in "problem" children up to 26% and a decrease in the manifestations of giftedness up to 5%. In 1999, only 1% of primary school-age children could not master the activity. Over the next 13 years, the percentage of intellectual problems increases with a clear decrease in the manifestations of giftedness. Conclusion. Comparing the indicators of different time epochs, we see a decrease in the manifestations of giftedness and an increase in the number of "problem" children. The influence of virtual technologies due to their maximum expansion and competition with the necessary areas of child development through their replacement or substitution may be the reason for the differences identified.
Layer Number Determination and Thickness-dependent Properties of Graphene Grown on SiC
Creators: name: Zhu, Wenjuan
name: Dimitrakopoulos, Christos
name: Freitag, Marcus
name: Avouris, Phaedon
Publisher: name: arXiv
Year: 2011
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The electronic properties of few-layer graphene grown on the carbon-face of silicon carbide (SiC) are found to be strongly dependent on the number of layers. The carrier mobility is larger in thicker graphene because substrate-related scattering is reduced in the higher layers. The carrier density dependence of the mobility is qualitatively different in thin and thick graphene, with the transition occurring at about 2 layers. The mobility increases with carrier density in thick graphene, similar to multi-layer graphene exfoliated from natural graphite, suggesting that the individual layers are still electrically coupled in spite of reports recording non-Bernal stacking order in C-face grown graphene. The Hall coefficient peak value is reduced in thick graphene due to the increased density of states. A reliable and rapid characterization tool for the layer number is therefore highly desirable. To date, AFM height determination and Raman scattering are typically used since the optical contrast of graphene on SiC is weak. However, both methods suffer from low throughput. We show that the scanning electron microscopy (SEM) contrast can give similar results with much higher throughput.
GLOBAL EKOLOGIK MUAMMOLAR VA ULARNI HAL QILISHNING HUQUQIY VOSITALARI
Creators: name: Ibroximov, Ulug'bek
Publisher: name: Zenodo
Year: 2023

description: Yer yuzida sanoat, ishlab chiqarish va boshqa omillar ta'sirida homashyoga bo'lgan talab soat sayin ortmoqda. Ushbu homashyo Yer yuzasida tabiiy ravishda paydo bo'lib, undan foydalanishda global ekologik inqiroz keltirib chiqaryapti. Ya'ni, sanoat va ishlab chiqarish suv manbaalarining ifloslanishiga, o'rmon daraxtlarining kesilishiga, aholi yashayotgan  katta hududlarni sanoat va maishiy soha chiqindilari axlatxonasiga aylanishiga, odamlarning tartib asosida va nooqilona boshqariladigan tabiiy resurslariga sababchi bo'lmoqda. Natijada, milliardlab aholi, toza ichimlik suvi iste'mol qilmaslik, oziq-ovqat tanqisligi, toza bo'lmagan ekologik hududlarda yashashga majbur bo'lmoqda. Statistika ma'lumotlari ham ushbu sabablar yuzasidan, Yer yuzida har soniyada bir nechta odam vafot etayotganini tasdiqlaydi.
What lurks below the last plateau: Experimental studies of the 0.7 x 2e^2/h conductance anomaly in one-dimensional systems
Creators: name: Micolich, A. P.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The integer quantized conductance of one-dimensional electron systems is a well understood effect of quantum confinement. A number of fractionally quantized plateaus are also commonly observed. They are attributed to many-body effects, but their precise origin is still a matter of debate, having attracted considerable interest over the past 15 years. This review reports on experimental studies of fractionally quantized plateaus in semiconductor quantum point contacts and quantum wires, focusing on the 0.7 x 2e^2/h conductance anomaly, its analogs at higher conductances, and the zero bias peak observed in the d.c. source-drain bias for conductances less than 2e^2/h.
description: Topical Review for J. Phys.: Condens. Matter, published version available at http://iopscience.iop.org/0953-8984/23/44/443201/ Document is 131 pages, 43 figures
Service centre change in metropolitan hinterlands: a case study of Calgary and Saskatoon, 1951-1971
Creators: name: Gyuse, Timothy Terver Iwokwagh
Publisher: name: University of Calgary
Year: 1974
Subjects: subject: HF 5430.6 C34 G97 1974 Microfiche
subject: Shopping centers - Alberta - Calgary
subject: Shopping centers - Saskatchewan - Saskatoon
subject: Central business districts - Alberta - Calgary
subject: Central business districts - Saskatchewan - Saskatoon

description: Bibliography: p. 141-147.
Improved all-sky search method for continuous gravitational waves from unknown neutron stars in binary systems
Creators: name: Covas, P. B.
name: Prix, R.
Publisher: name: Ridge, NY : American Physical Society
Year: 2022
Subjects: subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: Continuous gravitational waves from spinning deformed neutron stars have not been detected yet and are one of the most promising signals for future detection. All-sky searches for continuous gravitational waves from unknown neutron stars in binary systems are the most computationally challenging search type. Consequently, very few search algorithms and implementations exist for these sources, and only a handful of such searches have been performed so far. In this paper, we present a new all-sky binary search method, BinarySkyHouF, which extends and improves upon the earlier BinarySkyHough method and which was the basis for a recent search [Covas et al., Astrophys. J. Lett. 929, L19 (2022)AJLEEY2041-821310.3847/2041-8213/ac62d7]. We compare the sensitivity and computational cost to the previous method, showing that it is both more sensitive and computationally efficient, which allows for broader and more sensitive searches.
Self-amplified Cherenkov radiation from a relativistic electron in a waveguide partially filled with a laminated material
Creators: name: Grigoryan, L. Sh.
name: Mkrtchyan, A. R.
name: Khachatryan, H. F.
name: Arzumanyan, S. R.
name: Wagner, W.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Accelerator Physics (physics.acc-ph)
subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences

description: The radiation from a relativistic electron uniformly moving along the axis of cylindrical waveguide filled with laminated material of finite length is investigated. Expressions for the spectral distribution of radiation passing throw the transverse section of waveguide at large distances from the laminated material are derived with no limitations on the amplitude and variation profile of the layered medium permittivity and permeability. Numerical results for layered material consisting of dielectric plates alternated with vacuum gaps are given. It is shown that at a special choice of problem parameters, Cherenkov radiation generated by the relativistic electron inside the plates is self-amplified. The visual explanation of this effect is given and a possible application is discussed.
description: 8 pages, 4 figures,1 table, the paper is accepted for publication in the Journal of Physics: Conference Series
Moontime in Eagle Creek : stories for sustainability
Creators: name: Sheinin, Aliette Karina
Publisher: name: University of British Columbia
Year: 2009

description: The most common and influential approaches to sustainability in contemporary western society have been science-based. Consequently, sustainable living is usually defined in generalized, universalized, and quantified terms. While science is important for sustainable living, science alone cannot incorporate critical, yet specific, places, times, and events. Sustainable living in one country may not be sustainable in another, sustainable living right now may not be so in the future, sustainable living for me may not be sustainable for you, for example. What’s more, science itself is embedded in and reproduces place-, time-, and event-specific dimensions. Negotiating these dimensions of life into our understanding and practice of sustainability is imperative. In contrast to science, narrative seeks to construct and reflect knowledge of place-, time-, and event-specific dimensions of life; narrative as a mode of knowing is concrete, contextualized, specific, personally convincing, circular, imaginistic, interpersonal and emotive. Narrative, as well, is a process of knowledge construction, a way of coming to know place(s), time(s), and event(s). The goal of this dissertation is to negotiate, humbly, both science and narrative. My hope is that this work, as arts-based research, can expand our possibility(ies) for new ways of knowing and living sustainably. My negotiation between science and narrative takes place in Eagle Creek, a 2.21km long creek in West Vancouver, British Columbia. Eagle Creek begins from a reservoir and flows through forested municipal land, undeveloped private land, and developed residential land before discharging into the Pacific Ocean. Originally, I set out to investigate sustainability issues surrounding Eagle Creek’s role in drinking water and power generation, recreation, and salmon spawning. What I discovered in my research was far from what I expected. This is a story about those surprises. My hope is that in this story is an opportunity for you to negotiate, for yourself, new ways of knowing sustainability and living it, wherever, whenever, and however it may be for you. To the lives of our dreams!
Towards a temporal network analysis of interactive WiFi users
Creators: name: Zhang, Yan
name: Wang, Lin
name: Zhang, Yi-Qing
name: Li, Xiang
Publisher: name: arXiv
Year: 2012
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Social and Information Networks (cs.SI)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Complex networks are used to depict topological features of complex systems. The structure of a network characterizes the interactions among elements of the system, and facilitates the study of many dynamical processes taking place on it. In previous investigations, the topological infrastructure underlying dynamical systems is simplified as a static and invariable skeleton. However, this assumption cannot cover the temporal features of many time-evolution networks, whose components are evolving and mutating. In this letter, utilizing the log data of WiFi users in a Chinese university campus, we infuse the temporal dimension into the construction of dynamical human contact network. By quantitative comparison with the traditional aggregation approach, we find that the temporal contact network differs in many features, e.g., the reachability, the path length distribution. We conclude that the correlation between temporal path length and duration is not only determined by their definitions, but also influenced by the microdynamical features of human activities under certain social circumstance as well. The time order of individuals' interaction events plays a critical role in understanding many dynamical processes via human close proximity interactions studied in this letter. Besides, our study also provides a promising measure to identify the potential superspreaders by distinguishing the nodes functioning as the relay hub.
description: 6 pages, 6 figures
DIFFERENT TYPES OF OBESITY IN CHILDREN AND THEIR RELATION TO PHYSICAL FITNESS LEVEL
Creators: name: Musálek, Martin
Publisher: name: Материалы Международного психологического форума «Ребенок в цифровом мире»
Year: 2022
Subjects: obesity in children
human health
children

description: has shown that excess body fat or a high BMI in the general population relates to metabolic, functional, genetic, or oncological problems. Nevertheless, in the last two decades, several studies have pointed to the fact that some types of obesity need not be based on a high BMI. One of the most discussed is normal-weight obesity. Normal-weight obesity, characterized by excessive body fat combined with average body mass index (BMI), seems to have serious health outcomes from childhood and, therefore, is a new challenge in the methodology of obesity. In a series of studies, we demonstrated concrete differences in anthropometry and body composition profile, as well as differences in aspects of physical fitness between normal-weight obese, overweight obese, and normal-weight non-obese children from preschool age till middle school. Our findings showed that normal-weight obese children were as bad, or even worse, in physical fitness level than obese peers, pointing to the necessity of developing a unified methodology for identifying normal-weight obese (hidden) children for the pediatrics system.
Polarization of graphene in a strong magnetic field beyond the Dirac cone approximation
Creators: name: Yuan, Shengjun
name: Roldán, Rafael
name: Katsnelson, Mikhail I.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: In this paper we study the excitation spectrum of graphene in a strong magnetic field, beyond the Dirac cone approximation. The dynamical polarizability is obtained using a full $π$-band tight-binding model where the effect of the magnetic field is accounted for by means of the Peierls substitution. The effect of electron-electron interaction is considered within the random phase approximation, from which we obtain the dressed polarization function and the dielectric function. The range of validity of the Landau level quantization within the continuum approximation is studied, as well as the non-trivial quantization of the spectrum around the Van Hove singularity. We further discuss the effect of disorder, which leads to a smearing of the absorption peaks, and temperature, which activates additional inter-Landau level transitions induced by the Fermi distribution function.
description: 11 pages, 10 figures
Strength and behaviour of corner and edge column-slab connections in reinforced concrete flat plates
Creators: name: Zaghlool, Ezz El-Din Ramzy Fathalla
Publisher: name: University of Calgary
Year: 1971
Subjects: subject: TA 683.5 S6 Z342 1971 Microfilm
subject: Concrete slabs
subject: Plates (Engineering)
subject: Reinforced concrete construction

description: Bibliography: p. 350-362.
description: The object of this investigation was to study experimentally the strength and behaviour of the corner and edge column-slab connections in reinforced concrete flat plates under different loading conditions. The view was to obtain data useful for establishing a method for analysis of these connections. Two test programmes involving tests on nineteen full size connections were conducted to study their strength and behaviour under load. The main variables included were: concrete strength, ratio of column width to the effective depth of the slab, the reinforcement ratio, ratio of bending moment to axial shear and condition of loading i.e. monotonic or reversed. A theoretical method for the analysis of a corner or an edge connection subjected to the effect of bending moment or combined axial load and bending moment was developed which takes into account the effects of the above mentioned variables. The method checked successfully against the test results of the writer and those of other investigators in the following cases. 1. Corner connection subjected to uni-axial bending moment about one major axis of the column cross section only. 2. Corner connection subjected to symmetrical bi-axial bending moment . 3. Edge connection subjected to bending moment in a plane perpendicular to the free edge of the slab. 4. Corner connection subjected to combined axial load and symmetrical bi-axial bending moment. 5. Corner connection subjected to combined axial load and bending moment about one major axis of the column cross section only. 6. Edge connection subjected to combined axial load and bending moment in a plane perpendicular to the free edge of the slab only.
Current advances in seagrass research: A review from Viet Nam
Creators: name: Nguyen, Xuan-Vy
name: Phan, Thi Thuy Hang
name: Cao, Van-Luong
name: Nguyen Nhat, Nhu-Thuy
name: Nguyen, Trung-Hieu
name: Nguyen, Xuan-Thuy
name: Lau, Va-Khin
name: Hoang, Cong-Tin
name: Nguyen-Thi, My-Ngan
name: Nguyen, Hung Manh
name: Dao, Viet-Ha
name: Teichberg, Mirta
name: Papenbrock, Jutta
Publisher: name: Lausanne : Frontiers Media
Year: 2022
Subjects: subject: degradation
subject: distribution
subject: diversity
subject: ecosystem services
subject: seagrass
subject: taxonomy
subject: Dewey Decimal Classification::500 | Naturwissenschaften::570 | Biowissenschaften, Biologie

description: Seagrass meadows provide valuable ecosystem services but are fragile and threatened ecosystems all over the world. This review highlights the current advances in seagrass research from Viet Nam. One goal is to support decision makers in developing science-based conservation strategies. In recent years, several techniques were applied to estimate the size of seagrass meadows. Independent from the method used, there is an alarming decline in the seagrass area in almost all parts of Viet Nam. Since 1990, a decline of 46.5% or 13,549 ha was found. Only in a few protected and difficult-to-reach areas was an increase observed. Conditions at those sites could be investigated in more detail to make suggestions for conservation and recovery of seagrass meadows. Due to their lifestyle and morphology, seagrasses take up compounds from their environment easily. Phytoremediation processes of Thalassia hemprichii and Enhalus acoroides are described exemplarily. High accumulation of heavy metals dependent on their concentration in the environment in different organs can be observed. On the one hand, seagrasses play a role in phytoremediation processes in polluted areas; on the other hand, they might suffer at high concentrations, and pollution will contribute to their overall decline. Compared with the neighboring countries, the total Corg stock from seagrass beds in Viet Nam was much lower than in the Philippines and Indonesia but higher than that of Malaysia and Myanmar. Due to an exceptionally long latitudinal coastline of 3,260 km covering cool to warm water environments, the seagrass species composition in Viet Nam shows a high diversity and a high plasticity within species boundaries. This leads to challenges in taxonomic issues, especially with the Halophila genus, which can be better deduced from genetic diversity/population structures of members of Hydrocharitaceae. Finally, the current seagrass conservation and management efforts in Viet Nam are presented and discussed. Only decisions based on the interdisciplinary cooperation of scientists from all disciplines mentioned will finally lead to conserve this valuable ecosystem for mankind and biodiversity.
Gluon Saturation in QCD at High Energy: Beyond Leading Logarithms
Creators: name: Beuf, Guillaume
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Progresses towards the calculation and the understanding of NLO/NLL contributions to Deep Inelastic Scattering at low x with gluon saturation are being reviewed.
description: 3 pages, to appear in the proceedings of PANIC 11 (July 24th--29th, 2011, at MIT, Cambridge, MA, USA)
DIGITAL EDUCATIONAL ENVIRONMENT: OPPORTUNITIES AND RISKS
Creators: name: Shalina, Olga
name: Buzina, Tatyana
Publisher: name: Материалы Международного психологического форума «Ребенок в цифровом мире»
Year: 2022
Subjects: digital educational environment
automation
digitalization
psychological risks

description: Abstract: The digital environment is a place for recreation, communication, and education. Digital factors are replacing traditional, cultural, and historical factors of personal identity. Education and socialization become processes that take place within the "informational" (M. Castels) society. The development of the digital educational environment (particular, the Moscow Electronic School project) involves technical improvement and new functional capabilities: • Educational portals are filled with materials, programs, plans, tasks, and control forms. • Students and teachers’ personal cabinets are the open source of information. • Portfolio systems allow monitoring of the individual educational trajectories of students.• Communication systems between students, parents, teachers, administration, 12 and government organizations. The basis of these functional capabilities is the principle of open information i.e., the possibility to monitor results by students themselves, their parents, and educational organizations. Further digitalization of education is to expand into the development of tools for monitoring educational results and automated systems for assessing the safety and effectiveness of educational programs. However, digitalization of education is somewhat an area of "uncertainty" (A.G. Asmolov), in which methodological and value awareness do not always keep up with the development of technology. Teachers and psychologists face a number of points to discuss: •The problem of information surplus and special skills for work with the "informational neurosis". • The problem of "psychological exploration" (A.P. Nazaretyan) and the culture of using of digital technologies. • The problem of minimizing the role of a person and live communication. • The ethical problem of the fundamental possibility of automation and digitalization of moral and ethical education of young people, highlighting the need for an open and professional discussion to select areas for automation and digitalization within the education system.
Secondary emission from synthetic opal infiltrated by colloidal gold and glycine
Creators: name: Dovbeshko, G.
name: Fesenko, O.
name: Boyko, V.
name: Romanyuk, V.
name: Gorelik, V.
name: Moiseyenko, V.
name: Sobolev, V.
name: Shvalagin, V.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Optics (physics.optics)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences
subject: 78-05

description: A comparison of the secondary emission (photoluminescence) and Bragg reflection spectra of photonic crystals (PC), namely, synthetic opals, opals infiltrated by colloidal gold, glycine, and a complex of colloidal gold with glycine is performed. The infiltration of colloidal gold and a complex of colloidal gold with glycine into the pores of PC causes a short-wavelength shift (about 5-15 nm) of the Bragg reflection and increases the intensity of this band by 1.5-3 times. In photoluminescence, the infiltration of PC by colloidal gold and colloidal gold with glycine suppresses the PC emission band near 375-450 nm and enhances the shoulder of the stop-zone band of PC in the region of 470-510 nm. The shape of the observed PC emission band connected with defects in synthetic opal is determined by the type of infiltrates and the excitation wavelength. Possible mechanisms of the effects are discussed.
DIGITAL SHIFTS AND "HICKEY SYNDROME"
Creators: name: Leshkevich, Tatiana
Publisher: name: Материалы Международного психологического форума «Ребенок в цифровом мире»
Year: 2022
Subjects: digital norms
hickeys
digital loneliness

description: Abstract: The significance of this topic relates to the adoption of network practices and AI as a basis for the functioning of all segments of life, including the child's world. At the same time, the need for 4 existence in a hybrid world, which includes real interaction, remains. The main goal of the study is to show that the digital shifts that interfere with the socialization of children occur as computerized interactions are forcing the cultural and anthropological values of the pre-digital stage to the periphery. The methodological strategy includes comparative analysis. The main results include the fixation of "new" norms and values of digital existence. The function of "content viewer" and "network practices agent" becomes dominant. Life “face to the screen” determines natures of thinking, in which cause-and-effect relationships and holistic perceptions of information are lost. The level of meaningfulness of information is reduced, and the ability for critical thinking, which is necessary for the realization of personal potential, disappears. There is not only a loss of independence and increase in social immaturity, but also the fundamental helplessness is instilled when the gadget is not at hand. In conclusion, we emphasize that, firstly, digital life, providing simulated analogues of real life, leads to digital loneliness. The rapid development of digital technologies points to the trend of the global spread of the “hikikomori syndrome”. Secondly, the desire to transfer active abilities to the Network is accompanied by the transfer of gamification to real life. A child gamer prefers video games to communication with real friends and adults, forming a strong gambling addiction. Thirdly, the forms of networked communication that permeate the entire school culture, which is built on digital technologies, are fraught with new risks and vulnerabilities
Tracking the energies of one-dimensional subband edges in quantum point contacts using dc conductance measurements
Creators: name: Micolich, A. P.
name: Zülicke, U.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The semiconductor quantum point contact has long been a focal point for studies of one-dimensional electron transport. Their electrical properties are typically studied using ac conductance methods, but recent work has shown that the dc conductance can be used to obtain additional information, with a density-dependent Landé effective g-factor recently reported [T.-M. Chen et al, Phys. Rev. B 79, 081301 (2009)]. We discuss previous dc conductance measurements of quantum point contacts, demonstrating how valuable additional information can be extracted from the data. We provide a comprehensive and general framework for dc conductance measurements that provides a path to improving the accuracy of existing data and obtaining useful additional data. A key aspect is that dc conductance measurements can be used to map the energy of the 1D subband edges directly, giving new insight into the physics that takes place as the spin-split 1D subbands populate. Through a re-analysis of the data obtained by Chen et al, we obtain two findings. The first is that the 2-down subband edge closely tracks the source chemical potential when it first begins populating before dropping more rapidly in energy. The second is that the 2-up subband populates more rapidly as the subband edge approaches the drain potential. This second finding suggests that the spin-gap may stop opening, or even begin to close again, as the 2-up subband continues populating, consistent with recent theoretical calculations and experimental studies.
description: Published version available at http://iopscience.iop.org/0953-8984/23/36/362201 15 pages, 3 figures
Activist participation, mobilization and movement - media interactions : three studies of the British Columbia environmental movement
Creators: name: Malinick, Todd Edward
Publisher: name: University of British Columbia
Year: 2009

description: In recent decades, social movements have been one of the most productive avenues of sociological inquiry. Environmental movements in particular have received significant attention from movement scholars. This manuscript-based dissertation contains five chapters examining different theoretical propositions relating to a single social movement: the environmental movement to protect old growth forests of British Columbia, Canada, during the highly contentious 1990s. An introductory chapter provides a background discussion and brief literature review; a concluding chapter summarizes the results and discusses how the individual manuscripts tie together. In between, three studies test and extend theoretical propositions concerning the roles of sociodemographics, values, social networks, framing, and movement-media interactions, as they relate to this particular social movement. The first study compares and contrasts the environmental movement and its pro-forestry countermovement in terms of sociodemographic and value-based factors affecting participation. A significant contribution from this manuscript is the atypical treatment of ‘participation’— instead of simply taking group membership or rates of involvement in group sponsored activities as indicators of ‘participation’, both aspects are explored, revealing different underlying processes. This study also challenges the existing premise that postmaterialism is a strictly environmental value, showing members of the countermovement also possess strong postmaterialist values. Social movement researchers have long touted the significance of social networks in facilitating the mobilization process. The conventional wisdom is that ties to existing activists increases the likelihood of recruitment into movements, fostering greater levels of participation. The second study tests an adapted version of a well-accepted model of social movement mobilization (Klandermans and Oegema 1987; Kiandermans 2004), emphasizing multiple possible pathways to mobilization, highlighting the role media exposure plays in the recruitment process. The third study focuses on media coverage of social movements by examining how certain factors (gender, leadership, radicalism, and social network centrality) affected the likelihood that an activist was cited in the print-news media. This analysis is innovative in linking network and frame analysis. Results show that the network centrality of the activist is the strongest predictor of rates of citation. This result counters some existing explanations concerning the way media covers social movement activities.
Self-Energy Effects on the Low- to High-Energy Electronic Structure of SrVO3
Creators: name: Aizaki, S.
name: Yoshida, T.
name: Yoshimatsu, K.
name: Takizawa, M.
name: Minohara, M.
name: Ideta, S.
name: Fujimori, A.
name: Gupta, K.
name: Mahadevan, P.
name: Horiba, K.
name: Kumigashira, H.
name: Oshima, M.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The correlated electronic structure of SrVO3 has been investigated by angle-resolved photoemission spectroscopy using in-situ prepared thin films. Pronounced features of band renormalization have been observed: a sharp kink ~60 meV below the Fermi level (EF) and a broad so-called "high-energy kink" ~0.3 eV below EF as in the high-Tc cuprates although SrVO3 does not show magnetic fluctuations. We have deduced the self-energy in a wide energy range by applying the Kramers-Kronig relation to the observed spectra. The obtained self-energy clearly shows a large energy scale of ~0.7 eV which is attributed to electron-electron interaction and gives rise to the ~0.3 eV "kink" in the band dispersion as well as the incoherent peak ~1.5eV below EF. The present analysis enables us to obtain consistent picture both for the incoherent spectra and the band renormalization.
description: 5 pages, 3 figures
Theoretical investigation of the selective catalytic reduction of nitrogen oxides with ammonia on Fe/H-ZSM5
Creators: name: Brüggemann, Till
Publisher: name: Verlag Dr. Hut
Year: 2012
Subjects: classificationCode: 660
subject: Technische Chemie

description: Die selektive katalytische Reduktion (SCR) von NOx (x=1, 2) mit Ammoniak am Fe/HZSM5 wurde mittels der Dichtefunktionaltheorie (DFT) und mikrokinetischer Modellierung untersucht. Das H/N/O Reaktionssystem ist in die Oxidation von NO zu NO2, die schnelle und die NO2 SCR und die Oxidation von Ammoniak (SCO) unterteilt. Der Einfluss von zwei aktiven Zentren, Brønstedsäuren und mononukleare Eisenzentren, wird diskutiert.
description: The selective catalytic reduction (SCR) of NOx (x=1, 2) with ammonia on Fe/H-ZSM5 has been investigated by means of the Density Functional Theory (DFT) and microkinetic modeling. The reactive H/N/O system is divided into the subsystems oxidation of NO to NO2, the fast and the NO2 SCR and the oxidation of ammonia (SCO). The influence of two different active sites, Brønsted acids and mononuclear iron sites, is discussed.
Role of momentum transfer in the quenching of Gamow-Teller strength
Creators: name: Marketin, T.
name: Martínez-Pinedo, G.
name: Paar, N.
name: Vretenar, D.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Nuclear Theory (nucl-th)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: The relativistic proton-neutron quasiparticle random phase approximation (pn-RQRPA) is applied in the calculation of the L=0 strength in charge-exchange reactions on $^{48}$Ca, $^{90}$Zr, $^{208}$Pb and nuclei in the Sn isotopic chain. The microscopic theoretical framework is based on the relativistic Hartree-Bogoliubov (RHB) model for the nuclear ground state. The calculation is fully self-consistent, i.e. the same interaction is used both in the RHB equations that determine the quasiparticle basis, and in the matrix equations of the pn-RQRPA. The inclusion of the higher-order terms that include the effect of finite momentum transfer, primarily the isovector spin monopole (IVSM) term, in the transition operator shifts a portion of the strength to the high-energy region above the Gamow-Teller (GT) resonance. The total strength is slightly enhanced in nuclei with small neutron-to-proton ratio but remains unchanged with increasing neutron excess. Based on the strength obtained using the full L=0 transition operator in the pn-RQRPA calculation, we have estimated the impact of the IVSM on the strength measured in the charge-exchagne reactions on $^{90}$Zr and found that the data are consistent with the Ikeda sum rule.
description: 23 pages, 7 figures, 3 tables, submitted to Physical Review C