cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Limiting spectral distribution of a new random matrix model with dependence across rows and columns
Creators: name: Pfaffel, Oliver
name: Schlemm, Eckhard
Publisher: name: arXiv
Year: 2012
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics

description: We introduce a random matrix model where the entries are dependent across both rows and columns. More precisely, we investigate matrices of the form $\X=(X_{(i-1)n+t})_{it}\in\R^{p\times n}$ derived from a linear process $X_t=\sum_j c_j Z_{t-j}$, where the $\{Z_t\}$ are independent random variables with bounded fourth moments. We show that, when both $p$ and $n$ tend to infinity such that the ratio $p/n$ converges to a finite positive limit $y$, the empirical spectral distribution of $p^{-1}\X\X^{\T}$ converges almost surely to a deterministic measure. This limiting measure, which depends on $y$ and the spectral density of the linear process $X_t$, is characterized by an integral equation for its Stieltjes transform. The matrix $p^{-1}\X\X^{\T}$ can be interpreted as an approximation to the sample covariance matrix of a high-dimensional process whose components are independent copies of $X_t$.
description: 14 pages
Coexistence of different base periodicities in prokaryotic genomes as related to DNA curvature, supercoiling, and transcription
Creators: name: Kravatskaya, G. I.
name: Kravatsky, Y. V.
name: Chechetkin, V. R.
name: Tumanyan, V. G.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantitative Methods (q-bio.QM)
subject: FOS: Biological sciences

description: We analyzed the periodic patterns in E. coli promoters and compared the distributions of the corresponding patterns in promoters and in the complete genome to elucidate their function. Except the three-base periodicity, coincident with that in the coding regions and growing stronger in the region downstream from the transcriptions start (TS), all other salient periodicities are peaked upstream of TS. We found that helical periodicities with the lengths about B-helix pitch ~10.2-10.5 bp and A-helix pitch ~10.8-11.1 bp coexist in the genomic sequences. We mapped the distributions of stretches with A-, B-, and Z- like DNA periodicities onto E.coli genome. All three periodicities tend to concentrate within non-coding regions when their intensity becomes stronger and prevail in the promoter sequences. The comparison with available experimental data indicates that promoters with the most pronounced periodicities may be related to the supercoiling-sensitive genes.
description: 23 pages, 6 figures, 2 tables
Magnetic enhancement of baryon confinement modeled via a deformed Skyrmion
Creators: name: Chen, Shi
name: Fukushima, Kenji
name: Qiu, Zebin
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We discuss the baryon properties under a strong magnetic field. We adopt the Skyrme model and calculate the magnetic field dependence of the mass and the pressure distribution in the soliton. We elucidate a magnetically induced contribution to the pressure sum rule and interpret it as an extra confining force. We also quantize the soliton to estimate the difference between the proton and the neutron and find a simple relation between the pressure and the mass differences.
description: 15 pages, 4 figures
Ensuring Sustainability: The Vital Role of Environmental Audits in Shrimp Aquaculture
Creators: name: A. Jackqulin Wino*., V. Ezhilarasi., S. Selvaraj., Cheryl Antony., R. Jeya Shakila., P. Ruby
Publisher: name: the fish world a monthly magazine
Year: 2024

description: Shrimp aquaculture has rapidly grown to become a major sector in the global seafood industry, providing employment and economic benefits. However, it also brings significant environmental challenges like habitat degradation, pollution, and resource overuse. An environmental audit offers a structured and systematic assessment of shrimp farms, ensuring their operations align with sustainable practices. This article explores the importance of environmental audits in shrimp aquaculture, their methods, and the role of environmental auditors in promoting sustainability and compliance with environmental standards.
Averaging the AGN X-ray spectra from deep Chandra fields
Creators: name: Falocco, S.
name: Carrera, F. J.
name: Corral, A.
name: Laird, E.
name: Nandra, K.
name: Barcons, X.
name: Page, M. J.
name: Digby-North, J.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The X-ray spectra of Active Galactic Nuclei (AGN) carry the signatures of the emission from the central region, close to the Super Massive Black Hole (SMBH). For this reason, the study of deep X-ray spectra is a powerful instrument to investigate the origin of their emission. The emission line most often observed in the X-ray spectra of AGN is Fe K. It is known that it can be broadened and deformed by relativistic effects if emitted close enough to the central SMBH. In recent statistical studies of the X-ray spectra of AGN samples, it is found that a narrow Fe line is ubiquitous, while whether the broad features are as common is still uncertain. We present here the results of an investigation on the characteristics of the Fe line in the average X-ray spectra of AGN in deep Chandra fields. The average spectrum of the AGN is computed using Chandra spectra with more than 200 net counts from the AEGIS, Chandra Deep Field North and Chandra Deep Field South surveys. The sample spans a broader range of X-ray luminosities than other samples studied with stacking methods up to z=3.5. We analyze the average spectra of this sample using our own averaging method, checking the results against extensive simulations. Subsamples defined in terms of column density of the local absorber, luminosity and z are also investigated. We found a very significant Fe line with a narrow profile in all our samples and in almost all the subsamples that we constructed. The equivalent width (EW) of the narrow line estimated in the average spectrum of the full sample is 74 eV. The broad line component is significantly detected in the subsample of AGN with L<1.43 1E44 cgs and z<0.76, with EW=108 eV. We concluded that the narrow Fe line is an ubiquitous feature of the X-ray spectra of the AGN up to z=3.5.The broad line component is significant in the X-ray spectra of the AGN with low luminosity and low z.
description: 17 pages, 23 figures, accepted for publication in Astronomy & Astrophysics. Replacements in the bibliography: Iwasawa K., Mainieri V., Brusa M., et al., 2011, arXiv:1111.2447v1 (previously: Iwasawa et al 2011, in preparation); Mateos S., Carrera F.J., Page M.J., et al., 2010, \aap, 510, A35 (previously: Mateos S., Warwick R.S., Carrera F.J., et al., 2008, \aap, 492, 51)
The Influence of Atmospheric Scattering and Absorption on Ohmic Dissipation in Hot Jupiters
Creators: name: Heng, Kevin
Publisher: name: arXiv
Year: 2012
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Atmospheric and Oceanic Physics (physics.ao-ph)
subject: FOS: Physical sciences

description: Using semi-analytical, one-dimensional models, we elucidate the influence of scattering and absorption on the degree of Ohmic dissipation in hot Jovian atmospheres. With the assumption of Saha equilibrium, the variation in temperature is the main driver of the variations in the electrical conductivity, induced current and Ohmic power dissipated. Atmospheres possessing temperature inversions tend to dissipate most of the Ohmic power superficially, at high altitudes, whereas those without temperature inversions are capable of greater dissipation deeper down. Scattering in the optical range of wavelengths tends to cool the lower atmosphere, thus reducing the degree of dissipation at depth. Purely absorbing cloud decks (in the infrared), of a finite extent in height, allow for localized reductions in dissipation and may reverse a temperature inversion if they are dense and thick enough, thus greatly enhancing the dissipation at depth. If Ohmic dissipation is the mechanism for inflating hot Jupiters, then variations in the atmospheric opacity (which may be interpreted as arising from variations in metallicity and cloud/haze properties) and magnetic field strength naturally produce a scatter in the measured radii at a given strength of irradiation. Future work will determine if these effects are dominant over evolutionary effects, which also contribute a scatter to the measured radii.
description: Accepted by ApJ Letters. 5 pages, 5 figures
Experimental study of the inverse cascade in gravity wave turbulence
Creators: name: Deike, Luc
name: Laroche, Claude
name: Falcon, Eric
Publisher: name: arXiv
Year: 2011
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Chaotic Dynamics (nlin.CD)
subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences

description: We perform experiments to study the inverse cascade regime of gravity wave turbulence on the surface of a fluid. Surface waves are forced at an intermediate scale corresponding to the gravity-capillary wavelength. In response to this forcing, waves at larger scales are observed. The spectrum of their amplitudes exhibits a frequency-power law at high enough forcing. Both observations are ascribed to the upscale wave action transfers of gravity wave turbulence. The spectrum exponent is close to the value predicted by the weak turbulence theory. The spectrum amplitude is found to scale linearly with the mean injected power. We measure also the distributions of the injected power fluctuations in the presence of upscale (inverse) transfers or in the presence of a downscale (direct) cascade in gravity wave turbulence.
description: in press in EPL (2011)
von Neumann algebras in JT gravity
Creators: name: Kolchmeyer, David K.
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We quantize JT gravity with matter on the spatial interval with two asymptotically AdS boundaries. We consider the von Neumann algebra generated by the right Hamiltonian and the gravitationally dressed matter operators on the right boundary. We prove that the commutant of this algebra is the analogously defined left boundary algebra and that both algebras are type II$_\infty$ factors. These algebras provide a precise notion of the entanglement wedge away from the semiclassical limit. We comment on how the factorization problem differs between pure JT gravity and JT gravity with matter.
description: 35 pages + appendices. v2: typos fixed, appendix added
Parameter-free ansatz for inferring ground state wave functions of even potentials
Creators: name: Flego, S. P.
name: Plastino, A.
name: Plastino, A. R.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Physics (quant-ph)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: Schrödinger's equation (SE) and the information-optimizing principle based on Fisher's information measure (FIM) are intimately linked, which entails the existence of a Legendre transform structure underlying the SE. In this comunication we show that the existence of such an structure allows, via the virial theorem, for the formulation of a parameter-free ground state's SE-ansatz for a rather large family of potentials. The parameter-free nature of the ansatz derives from the structural information it incorporates through its Legendre properties.
Locus of control, rigidity, and life satisfaction amoung elderly British subjects
Creators: name: Fisher Reinsch, Deborah A.
Publisher: name: University of Calgary
Year: 1979
Subjects: subject: HQ 1064 G7 F56 1979 Microfiche
subject: Aged - Great Britain
subject: Aged - Psychology
subject: Control (Psychology)

description: Bibliography: p. 38-41.
Direct Observation of the Faraday Rotation Using Radially-Polarized Twisted Light
Creators: name: Tambag, Fatma
name: Koksal, Koray
name: Yildiz, Fikret
name: Babiker, Mohamed
Publisher: name: arXiv
Year: 2023
Subjects: subject: Optics (physics.optics)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: A novel experimental technique for the realisation of the optical Faraday effect using Laguerre- Gaussian (LG) light is described. The experiment employs a zero-order vortex half-wave retarder to generate a radially or azimuthally-polarised LG doughnut beam. The light emerging from the retarder then passes through a linear polariser, which gives rise to two intensity lobes, with the orientation of the intensity gap between the two lobes pointing parallel (perpendicular) to the polarization direction of the radially (azimuthally) polarised beam. To complete the Faraday set up, the light traverses a material subject to a magnetic field, before passing through a final linear polariser, which results in a visible rotation of the lobes pattern. This technique exhibits the Faraday effect readily visually, without further elaborate steps to detect changes in the light intensity. The degree of rotation of the plane of polarisation is determined directly by the visibly clear change in the orientation of the intensity gap between the lobes.
description: 4 figures
A Deterministic approach to the design of reinforced concrete beams and slabs
Creators: name: Price, Patrick St. J.
Publisher: name: University of Calgary
Year: 1972
Subjects: subject: TA 683.5 B3 P74 1971 Microfilm
subject: Concrete beams
subject: Concrete slabs
subject: Reinforced concrete construction

description: Bibliography: p. 181-188.
Bell inequalities with continuous angular variables
Creators: name: Borges, Carolina V. S.
name: Milman, Perola
name: Keller, Arne
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We consider bipartite quantum systems characterized by a continuous angular variable θ\in [-π, π[, representing, for instance, the position of a particle on a circle. We show how to reveal non-locality on this type of system using inequalities similar to CHSH ones, originally derived for bipartite spin 1/2 like systems. Such inequalities involve correlated measurement of continuous angular functions and are equivalent to the continuous superposition of CHSH inequalities acting on bidimensional subspaces of the infinite dimensional Hilbert space. As an example, we discuss in detail one application of our results, and we derive inequalities based on orientation correlation measurements. The introduced Bell-type inequalities open the perspective of new and simpler experiments to test non locality on a variety of quantum systems described by continuous variables.
Divalent and Trivalent Manganese Mixture Inhalation as a Parkinson Disease Model
Creators: name: Ordoñez-Librado, José Luis
name: Gutierrez-Valdez, Ana Luisa
name: Montiel-Flores, Enrique
name: Vianey Rodríguez-Lara
name: Reynoso-Erazo, Leonardo
name: Tron-Alvarez, Rocío
name: Avila-Costa, Maria Rosa
Publisher: name: Zenodo
Year: 2021
Subjects: Parkinson's disease experimental model
manganese inhalation
motor behavior
Tyrosine Hydroxylase
L/DOPA

description: The present study examines the effects of divalent and trivalent Manganese (Mn2+/Mn3+) mixture inhalation on mice to obtain a novel animal model of Parkinson disease (PD) inducing bilateral and progressive dopaminergic cell death, correlate those alterations with motor disturbances, and determine whether L-DOPA treatment improves the behavior, to ensure that the alterations are of dopaminergic origin. CD-1 male mice inhaled a mixture of Manganese chloride and Manganese acetate, one hour twice a week for five months. Before Mn exposure, animals were trained to perform motor function tests and were evaluated each week after the exposure. By the end of Mn exposure, 10 mice were orally treated with 7.5 mg/kg L-DOPA. After 5 months of Mn mixture inhalation, striatal dopamine content decreased 71%, the SNc showed important reduction in the number of TH-immunopositive neurons, mice developed akinesia, postural instability and action tremor; these motor alterations were reverted with L-DOPA treatment. Our data provide evidence that Mn2+/Mn3+ mixture inhalation produces similar morphological, neurochemical and behavioral alterations to those observed in PD providing a useful experimental model for the study of this neurodegenerative disease. Therefore, we consider that the inhalation of MnCl2/Mn(OAc)3 mixture could be an appropriate PD model.
Kernel Free Boundary Integral Method for 3D Stokes and Navier Equations on Irregular Domains
Creators: name: Zhao, Zhongshu
name: Dong, Haixia
name: Ying, Wenjun
Publisher: name: arXiv
Year: 2023
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics

description: A second-order accurate kernel-free boundary integral method is presented for Stokes and Navier boundary value problems on three-dimensional irregular domains. It solves equations in the framework of boundary integral equations, whose corresponding discrete forms are well-conditioned and solved by the GMRES method. A notable feature of this approach is that the boundary or volume integrals encountered in BIEs are indirectly evaluated by a Cartesian grid-based method, which includes discretizing corresponding simple interface problems with a MAC scheme, correcting discrete linear systems to reduce large local truncation errors near the interface, solving the modified system by a CG method together with an FFT-based Poisson solver. No extra work or special quadratures are required to deal with singular or hyper-singular boundary integrals and the dependence on the analytical expressions of Green's functions for the integral kernels is completely eliminated. Numerical results are given to demonstrate the efficiency and accuracy of the Cartesian grid-based method.
องค์ประกอบทางเคมีและความเป็นพิษของเปลือกมะม่วงพันธุ์พื้นเมืองจังหวัดสระแก้วต่อหนอนกระทู้ผัก
Creators: name: ปรินทร เต็มญารศิลป์
Publisher: name: สถาบันวิจัยและพัฒนา มหาวิทยาลัยเทคโนโลยีราชมงคลธัญบุรี
Year: 2023
Subjects: Spodoptera litura
Mangifera Indica Linn
phytochemical
antioxidant activity

description: Journal of Applied Research on Science and Technology (JARST), 22, 1, 13-26
Freedom to prioritize : a solution to the conflicts of identity?
Creators: name: Afsahi, Afsoun
Publisher: name: University of British Columbia
Year: 2009

description: Are feminism and multiculturalism inherently irreconcilable? Over the past few years many scholars have focused on and attempted to offer remedies to the apparent tension within liberal societies in regards to upholding both the principles of sexual equality and cultural protection. The question addressed in this paper is whether there is any way to guarantee gender equality without infringing upon the rights of different cultures, destroying the deeply-valued and entrenched notions of multiculturalism and ethic diversity, and engaging in what would be termed as neo-colonialism and imperial universalism? Drawing on the scholarly works including those by Okin, Benhabib, Eisenberg, Song, Shachar, and Phillips, I argue for a new model – placed within a larger discourse of deliberative democracy- based on the acknowledgement of the plurality of identities of single individuals within groups and facilitating the potential of prioritization of identities by individuals within groups as a possible solution to the problems that arise not out of feminism or multiculturalism nor in their apparent incompatibility with each other, but by a clash of these identities and the exclusion of women from the discourse which would have otherwise highlighted the plurality of identities.
Sex and age differences in attitude toward the concepts "male", "female", "male athelete", "female athelete"
Creators: name: Vickers, Joan
Publisher: name: University of Calgary
Year: 1976
Subjects: subject: GV 706.8 V52 1976 Microfiche
subject: Sports - Social aspects
subject: Sports - Psychological aspects
subject: High school students - Attitudes

description: Bibliography: p. 84-90.
Interference minimization in physical model of wireless networks
Creators: name: Aslanyan, Hakob
Publisher: name: arXiv
Year: 2011
Subjects: subject: Data Structures and Algorithms (cs.DS)
subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: Interference minimization problem in wireless sensor and ad-hoc networks is considered. That is to assign a transmission power to each node of a network such that the network is connected and at the same time the maximum of accumulated signal straight on network nodes is minimum. Previous works on interference minimization in wireless networks mainly consider the disk graph model of network. For disk graph model two approximation algorithms with $O(\sqrt{n})$ and $O((opt\ln{n})^{2})$ upper bounds of maximum interference are known, where $n$ is the number of nodes and $opt$ is the minimal interference of a given network. In current work we consider more general interference model, the physical interference model, where sender nodes' signal straight on a given node is a function of a sender/receiver node pair and sender nodes' transmission power. For this model we give a polynomial time approximation algorithm which finds a connected network with at most $O((opt\ln{n})^{2}/β)$ interference, where $β\geq 1$ is the minimum signal straight necessary on receiver node for successfully receiving a message.
Kinematics of the inner thousand AU region around the young massive star AFGL 2591-VLA3: a massive disk candidate?
Creators: name: Wang, K. -S.
name: van der Tak, F. F. S.
name: Hogerheijde, M. R.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: [Context] Recent detections of disks around young high-mass stars support the idea of massive star formation through accretion rather than coalescence, but the detailed kinematics in the equatorial region of the disk candidates is not well known, which limits our understanding of the accretion process. [Aims] This paper explores the kinematics of the gas around a young massive star with millimeter-wave interferometry to improve our understanding of the formation of massive stars though accretion. [Methods] We use Plateau de Bure interferometric images to probe the environment of the nearby (~1 kpc) and luminous (~20000 Lsun) high-mass (10-16 Msun) young star AFGL 2591-VLA3 in continuum and in lines of HDO, H218O and SO2 in the 115 and 230 GHz bands. Radiative transfer calculations are employed to investigate the kinematics of the source. [Results] At ~0.5" (500 AU) resolution, the line images clearly resolve the velocity field of the central compact source (diameter of ~ 800 AU) and show linear velocity gradients in the northeast-southwest direction. Judging from the disk-outflow geometry, the observed velocity gradient results from rotation and radial expansion in the equatorial region of VLA3. Radiative transfer calculations suggest that the velocity field is consistent with sub-Keplerian rotation plus Hubble-law like expansion. The line profiles of the observed molecules suggest a layered structure, with HDO emission arising from the disk mid-plane, H218O from the warm mid-layer, and SO2 from the upper disk. [Conclusions] We propose AFGL 2591-VLA3 as a new massive disk candidate, with peculiar kinematics. The rotation of this disk is sub-Keplerian, probably due to magnetic braking, while the stellar wind may be responsible for the expansion of the disk. The expansion motion [...]
description: 13 pages, 14 figures and 7 tables. accepted to A&A
Transitional cluster dynamics in a model for delay-coupled chemical oscillators
Creators: name: Keane, Andrew
name: Neff, Alannah
name: Blaha, Karen
name: Amann, Andreas
name: Hövel, Philipp
Publisher: name: arXiv
Year: 2023
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics

description: Cluster synchronization is a fundamental phenomenon in systems of coupled oscillators. Here, we investigate clustering patterns that emerge in a unidirectional ring of four delay-coupled electrochemical oscillators. A voltage parameter in the experimental set-up controls the onset of oscillations via a Hopf bifurcation. For a smaller voltage, the oscillators exhibit simple, so-called primary, clustering patterns, where all phase differences between each set of coupled oscillators are identical. However, upon increasing the voltage, additional secondary states, where phase differences differ, are detected. Previous work on this system saw the development of a mathematical model that explains how the existence, stability, and common frequency of the experimentally observed cluster states can be accurately controlled by the delay time of the coupling. In this study, we revisit the mathematical model of the electrochemical oscillators to address open questions by means of bifurcation analysis. Our analysis reveals how the stable cluster states, corresponding to experimental observations, lose their stability via an assortment of bifurcation types. The analysis further reveals a complex interconnectedness between branches of different cluster types; in particular, we find that each secondary state provides a continuous transition between certain primary states. These connections are explained by studying the phase space and parameter symmetries of the respective states. Furthermore, we show that it is only for a larger value of the voltage parameter that the branches of secondary states develop intervals of stability. Otherwise, for a smaller voltage, all the branches of secondary states are completely unstable and therefore hidden to experimentalists.
description: 13 pages, 14 figures
การประมาณค่าผลผลิตของข้าวโพดเลี้ยงสัตว์ด้วยภาพถ่ายทางอากาศร่วมกับดัชนีพืชพรรณ NDVI
Creators: name: ภูมิชัย ตรัยดลานนท์
Publisher: name: สถาบันวิจัยและพัฒนา มหาวิทยาลัยเทคโนโลยีราชมงคลธัญบุรี
Year: 2023
Subjects: Aerial mapping
UAVs
NDVI
multi-wavelength photograph
maize yield estimation

description: Journal of Applied Research on Science and Technology (JARST), 22, 1, 27-39
Metaprogramming Applied to Numerical Problems
Creators: name: Mulansky, Mario
name: Ahnert, Karsten
Publisher: name: arXiv
Year: 2011
Subjects: subject: Computational Physics (physics.comp-ph)
subject: Mathematical Software (cs.MS)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: From the discovery that the template system of C++ forms a Turing complete language in 1994, a programming technique called Template Metaprogramming has emerged that allows for the creation of faster, more generic and better code. Here, we apply Template Metaprogramming to implement a generic Runge-Kutta scheme that can be used to numerically solve ordinary differential equations. We show that using Template Metaprogramming results in a significantly improved performance compared to a classical implementation.
description: 4 pages,2 figures,3 listings
ความสัมพันธ์ของความยากของงานและการทํางานหลายอย่างพร้อมกันต่อประสิทธิภาพในการควบคุมแขนหุ่นยนต์
Creators: name: ชลาลัย วงเวียน
Publisher: name: สถาบันวิจัยและพัฒนา มหาวิทยาลัยเทคโนโลยีราชมงคลธัญบุรี
Year: 2023
Subjects: Multitasking
Performance
Robot arm control
Mathematics test
NASA-TLX

description: Journal of Applied Research on Science and Technology (JARST), 22, 1, 40-49
Non-Gaussianity in the warm k-inflation
Creators: name: Shen, Chao-Qun
name: Zhang, Xiao-Min
name: Peng, Zhi-Peng
name: Liu, He
name: Li, Xi-Bin
name: Chu, Peng-Cheng
Publisher: name: arXiv
Year: 2023
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: This paper presents and investigates non-Gaussian perturbations for the warm k-inflation model that is driven by pure kinetic energy. The two complementary components of the overall non-Gaussianity are the three-point and four-point correlations. The intrinsic non-Gaussian component, denoted as the nonlinear parameter f_{NL}^{int}, is rooted in the three-point correlation for the inflaton field. Meanwhile, the δN part non-Gaussianity, denoted as f_{NL}^{δN}, is the contribution attributed to the four-point correlation function of the inflaton field. In this paper, the above two components in warm k-inflation are individually computed and analyzed. Then, comparisons and discussions between them are conducted, and the non-Gaussian theoretical results are compared with experimental observations to determine the range of model parameters within the allowable range of observation.
Rapid population synthesis of black-hole high-mass X-ray binaries: implications for binary stellar evolution
Creators: name: Romero-Shaw, Isobel M.
name: Hirai, Ryosuke
name: Bahramian, Arash
name: Willcox, Reinhold
name: Mandel, Ilya
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We conduct binary population synthesis to investigate the formation of wind-fed high-mass X-ray binaries containing black holes (BH-HMXBs). We evolve multiple populations of high-mass binary stars and consider BH-HMXB formation rates, masses, spins and separations. We find that systems similar to Cygnus X-1 likely form after stable Case A mass transfer (MT) from the main sequence progenitors of black holes, provided such MT is characterised by low accretion efficiency, $β\lesssim 0.1$, with modest orbital angular momentum losses from the non-accreted material. Additionally, efficient BH-HMXB formation relies on a new simple treatment for Case A MT that allows donors to retain larger core masses compared to traditional rapid population-synthesis assumptions. At solar metallicity, our Preferred model yields $\mathcal{O}(1)$ observable BH-HMXBs in the Galaxy today, consistent with observations. In this simulation, $8\%$ of BH-HMXBs go on to merge as binary black holes or neutron star-black hole binaries within a Hubble time; however, none of the merging binaries have BH-HMXB progenitors with properties similar to Cygnus X-1. With our preferred settings for core mass growth, mass transfer efficiency and angular momentum loss, accounting for an evolving metallicity, and integrating over the metallicity-specific star formation history of the Universe, we find that BH-HMXBs may have contributed $\approx2$--$5$ BBH merger signals to detections reported in the third gravitational-wave transient catalogue of the LIGO-Virgo-KAGRA Collaboration. We also suggest MT efficiency should be higher during stable Case B MT than during Case A MT.
description: 17 pages, 10 figures
Marking land, producing markets : the making of a rural Guatemalan land market
Creators: name: Gould, Kevin
Publisher: name: University of British Columbia
Year: 2009

description: Markets are often conceptualized as disembodied and removed from daily life. Set against this view, this dissertation examines particular processes through which a market is formed. What are the conditions of possibility for this market? What practices are carried out in its name? How do such practices help to constitute meanings and materialities of subjects and territories? Drawing on archival research, interviews, and twenty months (2003-2005) as a participant observer, this dissertation explores these questions by tracing the emergence of a specific market: a market for rural land in Northern Guatemala. I begin by recounting how World Bank experts succeed in linking a series of rationales, procedures, and experiences into a policy instrument capable of making land markets. I then describe how during nearly five hundred of years of agrarian struggle, rural land and land claiming subjects have come into being in the northern Guatemalan department (province) of Petén. To understand how these rural territories and subjects became articulated with the Bank’s land policy instrument, I examine the making of World Bank-financed land policy in Guatemala during the 1990s. I document the visions and practices of consultants, planners, economists, and government officials as they operationalize the policy. By the early 2000s, the work of creating a land market in Petén consists largely of efforts to make state-sanctioned private property rights in land. To create these rights, technicians working for agrarian institutions distribute legal documents to land claimants, demarcate and map thousands of land claims, and struggle over the costs, responsibilities, and risks of property-rights making. While policy makers claim that this process merely formalizes existing arrangements, I argue that the work of technicians constitutes subjects and territories according to a performative logic. Specifically, I contend that the making of rural property rights constitutes land claimants as individualized national subjects, produces landscapes as national, uncontested and naturally divided into private claims, and contributes to effacing historical and recent processes of dispossession. These results underscore the importance of unearthing the hidden arrangements through which markets are made.
Eruption of a Magnetic Flux Rope in a Comprehensive Radiative Magnetohydrodynamic Simulation of flare-productive active regions
Creators: name: Chen, Feng
name: Rempel, Matthias
name: Fan, Yuhong
Publisher: name: arXiv
Year: 2023
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Radiative magnetohydrodynamic simulation includes sufficiently realistic physics to allow for the synthesis of remote sensing observables that can be quantitatively compared with observations. We analyze the largest flare in a simulation of the emergence of large flare-productive active regions described by Chen et al. The flare releases $4.5\times10^{31}$ erg of magnetic energy and is accompanied by a spectacular coronal mass ejection. Synthetic soft X-ray flux of this flare reaches M2 class. The eruption reproduces many key features of observed solar eruptions. A pre-existing magnetic flux rope is formed along the highly sheared polarity inversion line between a sunspot pair and is covered by an overlying multi-pole magnetic field. During the eruption, the progenitor flux rope actively reconnects with the canopy field and evolves to the large-scale multi-thermal flux rope that is observed in the corona. Meanwhile, the magnetic energy released via reconnection is channeled down to the lower atmosphere and gives rise to bright soft X-ray post-flare loops and flare ribbons that reproduce the morphology and dynamic evolution of observed flares. The model helps to shed light on questions of where and when the a flux rope may form and how the magnetic structures in an eruption are related to observable emission properties.
description: 13 Pages, 6 figures, accepted for publication in ApJL
The brightness temperatures of the main Galactic radio-loops at 22 MHz
Creators: name: Urošević, D.
name: Jovanović, V. Borka
Publisher: name: arXiv
Year: 2011
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The average brightness temperatures and surface brightnesses at 22 MHz are derived for the four main Galactic radio-continuum loops (Loops I, II, III and IV, hereafter radio-loops). Also the radio-continuum spectra for the radio-loops are presented. Adding the average brightness temperatures at 22 MHz derived here with the average brightness temperatures derived from spectra published previously at 408, 820 and 1420 MHz we obtained clearly non-thermal spectral indices for all radio-loops. Our derived spectral indices are slightly shallower than those measured by previous works.
description: 11 pages, 2 tables, 9 figures. Accepted for publication in Open Astronomy Journal
A Golgi study of retinal morphogenesis in the rat
Creators: name: Spaulding, Kathryn Marie
Publisher: name: University of Calgary
Year: 1978
Subjects: subject: QL 737 R6 S62 1978 Fiche
subject: Rats - Physiology
subject: Eye
subject: Retina
subject: Golgi apparatus

description: Bibliography: p. 94-98.
2004 Venezuelan Presidential Recall Referendum (2004 PRR): A Statistical Analysis from the Point of View of Electronic Voting Data Transmissions
Creators: name: Martín, Isbelia
Publisher: name: arXiv
Year: 2012
Subjects: subject: Methodology (stat.ME)
subject: FOS: Computer and information sciences

description: Statistical comparisons of electoral variables are made between groups of electronic voting machines and voting centers classified by types of transmissions according to the volume of traffic in incoming and outgoing data of machines from and toward the National Electoral Council (CNE) totalizing servers. One unexpectedly finds two types of behavior in wire telephony data transmissions and only one type where cellular telephony is employed, contravening any reasonable electoral normative. Differentiation in data transmissions arise when comparing number of incoming and outgoing data bytes per machine against total number of votes per machine reported officially by the CNE. The respective distributions of electoral variables for each type of transmission show that the groups classified by it do not correspond to random sets of the electoral universe. In particular, the distributions for the NO percentage of votes per machine differ statistically across groups. The presidential elections of 1998, 2000 and the 2004 Presidential Recall Referendum (2004 PRR) are compared according to the type of transmissions in 2004 PRR. Statistically, the difference between the empirical distributions of the 2004 PRR NO results and the 2000 Chavez votes results by voting centers is not significant.
description: Published in at http://dx.doi.org/10.1214/10-STS350 the Statistical Science (http://www.imstat.org/sts/) by the Institute of Mathematical Statistics (http://www.imstat.org)
The close AGN reference survey (CARS) : Discovery of a global [C II] 158 µm line excess in AGN HE 1353−1917
Creators: name: Smirnova-Pinchukova, I.
name: Husemann, B.
name: Busch, G.
name: Appleton, P.
name: Bethermin, M.
name: Combes, F.
name: Croom, S.
name: Davis, T.A.
name: Fischer, C.
name: Gaspari, M.
name: Groves, B.
name: Klein, R.
name: O’Dea, C.P.
name: Pérez-Torres, M.
name: Scharwächter, J.
name: Singha, M.
name: Tremblay, G.R.
name: Urrutia, T.
Publisher: name: Les Ulis : EDP Sciences
Year: 2019
Subjects: subject: Galaxies: Seyfert
subject: Galaxies: star formation
subject: Infrared: ISM
subject: ISM: jets and outflows
subject: 520

description: The [C ii]λ158 µm line is one of the strongest far-infrared (FIR) lines and an important coolant in the interstellar medium of galaxies that is accessible out to high redshifts. The excitation of [C ii] is complex and can best be studied in detail at low redshifts. Here we report the discovery of the highest global [C ii] excess with respect to the FIR luminosity in the nearby AGN host galaxy HE 1353−1917. This galaxy is exceptional among a sample of five targets because the AGN ionization cone and radio jet directly intercept the cold galactic disk. As a consequence, a massive multiphase gas outflow on kiloparsec scales is embedded in an extended narrow-line region. Because HE 1353−1917 is distinguished by these special properties from our four bright AGN, we propose that a global [C ii] excess in AGN host galaxies could be a direct signature of a multiphase AGN-driven outflow with a high mass-loading factor.
Resonant production of dark photons from axion without a large coupling
Creators: name: Kitajima, Naoya
name: Takahashi, Fuminobu
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Dark photons could be produced resonantly by the oscillating axion field in the early universe. This resonant production mechanism has been used in various contexts, including dark photon dark matter and primordial magnetic field production. However, for this resonant production to work in an expanding universe, a large axion-dark photon coupling is required, which is not easy to realize in terms of model building and requires the introduction of many charged fermions and/or the complex clockwork mechanism. In this paper, we present a new scenario that efficiently produces dark photons from the axion with a much smaller coupling. This is possible by modifying the dynamics of axion and significantly delaying the onset of oscillations, as in the so-called trapped misalignment mechanism. As a specific example, we consider models in which dark photon production occurs efficiently despite the small axion-dark photon coupling by temporally trapping an axion in a wrong minimum and releasing it after the Hubble parameter becomes much smaller than the axion mass. In this scenario, it is expected that the polarization asymmetry of dark photons and gravitational waves generated from dark photons will be significantly reduced.
description: 16 pages, 5 figures
Creative process, tradition, convention: their interrelatedness in the visual arts
Creators: name: Hruby, Malenka Eleonora Emilie
Publisher: name: University of Calgary
Year: 1976
Subjects: subject: N 7428 H78 1976 Microfiche
subject: Creation (Literary, artistic, etc.)
subject: Art

description: Bibliography: p. 30-32.
description: The purpose of the study was to investigate the concepts of creative process, tradition, and convention, in the visual arts, and to inquire into their interrelatedness. The study provides working definitions for each of the concepts under consideration and thorough inquiry into their individual natures. The interrelatedness of the concepts has been examined in some aspects of 20th century thought, particularly in relation to the field of visual art. The research consisted of an investigation of the related literature in the fields of art history, art criticism, psychology, philosophy, and science, and inferences have been drawn from each. The conclusions show that there is a definite interrelatedness between the creative process, tradition, and convention as defined in the study; that most advanced creative innovations have to be articulated in a traditional language in order to be understood and appreciated. In addition, it was felt that tradition is subject to scrutiny each time it interrelates with the creative process. Cumulative in nature, tradition constantly broadens its basis to accommodate innovations. Convention results when the successful outcome of such interrelating becomes arrested and perpetuated.
Multiproxy-Dataset for core 5053-4 (HSPDP-CHB-1A)
Creators: name: Viehberg, Finn
name: Just, Janna
name: Dean, Jonathan
name: Wagner, Bernd
name: Franz, Sven Oliver
name: Klasen, Nicole
name: Asfawossen Asrat
name: Leng, Melanie
name: Rethemeyer, Janet
name: Milodowski, Antoni
name: Schäbitz, Frank
Publisher: name: CRC806-Database
Year: 2016

description: Chew Bahir
Sorting Algorithms with Restrictions
Creators: name: Aslanyan, Hakob
Publisher: name: arXiv
Year: 2011
Subjects: subject: Data Structures and Algorithms (cs.DS)
subject: FOS: Computer and information sciences

description: Sorting is one of the most used and well investigated algorithmic problem [1]. Traditional postulation supposes the sorting data archived, and the elementary operation as comparisons of two numbers. In a view of appearance of new processors and applied problems with data streams, sorting changed its face. This changes and generalizations are the subject of investigation in the research below.
Behrens, Gustav, Bodenurkunden aus Rheinhessen : Bildheft zur Vor- und Frühgeschichte Rheinhessens ; I. Die vorrömische Zeit
Creators: name: Steiner, Paul
Publisher: name: Trierer Zeitschrift - Archäologie und Kunst des Trierer Landes und seiner Nachbargebiete
Year: 2020

description: Rezension zu: Behrens, Gustav, Bodenurkunden aus Rheinhessen : Bildheft zur Vor- und Frühgeschichte Rheinhessens ; I. Die vorrömische Zeit. Mainz, 1927. 80 S., III Taf.
description: Trierer Zeitschrift - Archäologie und Kunst des Trierer Landes und seiner Nachbargebiete, Bd. 2 Nr. 4 (1927): Trierer Zeitschrift : Vierteljahreshefte für Geschichte und Kunst des Trierer Landes und seiner Nachbargebiete
การส่งเสริมการท่องเที่ยวเชิงนันทนาการหลังสถานการณ์โควิด-19 ในพื้นที่อำเภอหัวหินด้วยการใช้เทคโนโลยีความจริงเสริมร่วมกับเทคโนโลยีสารสนเทศภูมิศาสตร์
Creators: name: อังคณา จัตตามาศ
Publisher: name: สถาบันวิจัยและพัฒนา มหาวิทยาลัยกาฬสินธุ์
Year: 2023
Subjects: เทคโนโลยีความจริงเสริม
เทคโนโลยีสารสนเทศภูมิศาสตร์
การท่องเที่ยวเชิงนันทนาการ
การส่งเสริมการท่องเที่ยว

description: วารสารวิทยาศาสตร์ เทคโนโลยี และนวัตกรรม มหาวิทยาลัยกาฬสินธุ์, 2, 1, 16-36
A Strategy for planning curriculum change in a teacher education programme at a church agency teachers' college in Papua New Guinea
Creators: name: Pitman, Kaye
Publisher: name: University of Calgary
Year: 1977
Subjects: subject: LB 2278 P3 P58 1977 Microfiche
subject: Teachers, Training of - Papua New Guinea
subject: Balob Teachers' College, Papua New Guinea
subject: Curriculum change - Papua New Guinea

description: Bibliography: p. 70-72.
Stress regulation in association with gender and gender role self-concept
Creators: name: Schmidt, Laura
name: Ditzen, Beate
name: Neubauer, Andreas
name: Stoffel, Martin
name: Sieverding, Monika
name: Zintel, Stephanie
Publisher: name: Open Science Framework
Year: 2022
Subjects: subject: Social and Behavioral Sciences
subject: Psychology
subject: FOS: Psychology

description: Stress is a risk factor for many psychological and physical diseases. Women often report more subjective stress than men. We hypothesize that for men, admitting having stress contradicts a male self-concept. However, self-reported subjective stress and physiological stress parameters sometimes differ. Not self-reporting stress does not necessarily mean that one is not stressed. We are looking at subjective and physiological stress parameters in both a standardized laboratory test (Trier Social Stress Test; TSST) and in participants’ daily lives (ecological momentary assessment) in association with gender and gender role self-concept.
Gaussian Quantum Information
Creators: name: Weedbrook, Christian
name: Pirandola, Stefano
name: Garcia-Patron, Raul
name: Cerf, Nicolas J.
name: Ralph, Timothy C.
name: Shapiro, Jeffrey H.
name: Lloyd, Seth
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The science of quantum information has arisen over the last two decades centered on the manipulation of individual quanta of information, known as quantum bits or qubits. Quantum computers, quantum cryptography and quantum teleportation are among the most celebrated ideas that have emerged from this new field. It was realized later on that using continuous-variable quantum information carriers, instead of qubits, constitutes an extremely powerful alternative approach to quantum information processing. This review focuses on continuous-variable quantum information processes that rely on any combination of Gaussian states, Gaussian operations, and Gaussian measurements. Interestingly, such a restriction to the Gaussian realm comes with various benefits, since on the theoretical side, simple analytical tools are available and, on the experimental side, optical components effecting Gaussian processes are readily available in the laboratory. Yet, Gaussian quantum information processing opens the way to a wide variety of tasks and applications, including quantum communication, quantum cryptography, quantum computation, quantum teleportation, and quantum state and channel discrimination. This review reports on the state of the art in this field, ranging from the basic theoretical tools and landmark experimental realizations to the most recent successful developments.
description: 51 pages, 7 figures, submitted to Reviews of Modern Physics