cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Implementing welfare-to-work schemes in British Columbia
Creators: name: Spence, Robin Kirsten
Publisher: name: University of British Columbia
Year: 2009

description: The successful implementation of the Canada/British Columbia Agreement to Enhance the Employability of Social Assistance Recipients (the “SAR”, or Four Corner” Agreement) can be explained by a revised version of Mazmanian and Sabatier’s 1983 theory of implementation. This framework is also able to account for some of the limitations that the initiative faced. The analysis of the SAR Agreement is placed in the context of the on-going dilemma of work and welfare and in the evolving ideological climate in the B.C. welfare system from an ideology of redistribution, to one of liberal developmentalism, emphasizing opportunity before work. The case-study provides a history of the implementation of the SAR Agreement in B.C. at both the policy-formulation and field levels of government, and gives an overview of the agreement and its results. This information is gained through reports, government documents and interviews with officials involved in the SAR Agreement. Application of the revised theory of implementation to the agreement illuminates the ingredients critical to the success of the SAR initiative in British Columbia. Among the most important determinants of success were the intensive cooperation between federal and provincial agencies, the amount of discretion given to local officials when combined with the expertise and resources of those officials, the correct causal theory underlying most project designs, and the flexibility of the agreement respond to past successes and failures. The agreement was limited by the lack of general guidelines to provide officials with a sense of direction, by the possibility of conflicting goals of outside agencies, and by problems with the invalid causal theory underlying a few programs.
Emulating heavy fermions in twisted trilayer graphene
Creators: name: Ramires, Aline
name: Lado, Jose L.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Twisted van der Waals materials have been shown to host a variety of tunable electronic structures. Here we put forward twisted trilayer graphene (TTG) as a platform to emulate heavy fermion physics. We demonstrate that TTG hosts extended and localized modes with an electronic structure that can be controlled by interlayer bias. In the presence of interactions, the existence of localized modes leads to the development of local moments, which are Kondo coupled to coexisting extended states. By electrically controlling the effective exchange between local moments, the system can be driven from a magnetic into a heavy fermion regime, passing through a quantum critical point. Our results put forward twisted graphene multilayers as a platform for the realization of strongly correlated heavy fermion physics in a purely carbon-based platform.
description: 7 pages, 4 figures
Experience of archaeological didactics and museal interaction on the Palaeolithic of the Pradis Plateau (Pordenone, Italy)
Creators: name: Romandini, Matteo
name: Del Missier, Flavio
name: Cescutti, Giuliano
name: Aviani, Chiara
name: Terlato, Gabriele
name: Scaramucci, Sem
name: Léone, Aurélié
name: Zunnui, Elisa
name: Carrara, Lisa
name: Peresani, Marco
Publisher: name: Università degli Studi di Ferrara
Year: 2015

description: The “Museo della Grotta” was opened to the public in 2001, in the small mountain village of Pradis (Clauzetto). Since that year, the activity of the museum has been deeply bound to the scientific research carried out by the University of Ferrara on the prehistoric sites of Clusantin and Rio Secco caves. In last years, the museum and the Municipal administration launched many new cultural and educational activities such as: the “Prehistory Days”, conferences and courses for local guides. Nowadays the museum activities of cultural enhancement of the territory and scientific research represent a key attraction to the Pradis Valley, acting in this scenario as a promotion hub for the whole territory.
description: Annali online della Didattica e della Formazione Docente, Vol 7, N° 10 (2015): Musei e didattica
Neuroprotective effect of anti-inflammatory drug in rats Parkinson's disease model
Creators: name: Vezheeva, Olga A.
name: Professor Valeriy G. Sergeyev
Publisher: name: F1000Research
Year: 2015

description: Introduction of rAAV reduces the number of dopaminergic neurons in the substantia nigra  and significantly increased number of microglial cells. This allows us to consider the possibility of pharmacological inhibition of microglial cells as a therapeutic strategy for the treatment of PD.
The high-density limit of two-electron systems: Results from the extended Overhauser approach
Creators: name: Gori-Giorgi, Paola
name: Savin, Andreas
Publisher: name: arXiv
Year: 2007
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: The ``extended Overhauser model'' [Overhauser, Can. J. Phys. 1995, 73, 683] for the calculation of the spherically and system-averaged pair density (APD) has been recently combined with the Kohn-Sham equations to yield realistic APD and correlation energies. In this work we test this approach in the high-density (weakly-correlated) limit of the He isoelectronic series and of the Hooke's atom isoelectronic series. Unlike many of the commonly used energy functionals, the Overhauser approach yields accurate correlation energies for both series.
description: To appear in J. Chem. Theory and Comput
Detection of Acute Kidney Injury by a creatinine-based electronic system for hospitalized patients in Chile; Comparison with clinical detection
Creators: name: J. Vicente
name: W. Uribe
name: L. Michea
name: R. Torres
Publisher: name: F1000Research
Year: 2015

description: Acute Kidney Injury is much higher than currently thought. An automatic AKI detection system prevents diagnosis leaks.
Additional file 4 of Comparative analyses of three complete Primula mitogenomes with insights into mitogenome size variation in Ericales
Creators: name: Wei, Lei
name: Liu, Tong-Jian
name: Hao, Gang
name: Ge, Xue-Jun
name: Yan, Hai-Fei
Publisher: name: figshare
Year: 2022
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 4: FigureS4. Average coverage of MTPTs and their plastid counterparts.
Time-reversal symmetry-breaking charge order in a kagome superconductor
Creators: name: Mielke, C.
name: Das, D.
name: Yin, J. -X.
name: Liu, H.
name: Gupta, R.
name: Jiang, Y. -X.
name: Medarde, M.
name: Wu, X.
name: Lei, H. C.
name: Chang, J. J.
name: Dai, P.
name: Si, Q.
name: Miao, H.
name: Thomale, R.
name: Neupert, T.
name: Shi, Y.
name: Khasanov, R.
name: Hasan, M. Z.
name: Luetkens, H.
name: Guguchia, Z.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The kagome lattice, the most prominent structural motif in quantum physics, benefits from inherent nontrivial geometry to host diverse quantum phases, ranging from spin-liquid phases, topological matter to intertwined orders, and most rarely unconventional superconductivity. Recently, charge sensitive probes have suggested that the kagome superconductors AV_3Sb_5 (A = K, Rb, Cs) (A = K, Rb, Cs) exhibit unconventional chiral charge order, which is analogous to the long-sought-after quantum order in the Haldane model or Varma model. However, direct evidence for the time-reversal symmetry-breaking of the charge order remains elusive. Here we utilize muon spin relaxation to probe the kagome charge order and superconductivity in KV_3Sb_5. We observe a striking enhancement of the internal field width sensed by the muon ensemble, which takes place just below the charge ordering temperature and persists into the superconducting state. Remarkably, the muon spin relaxation rate below the charge ordering temperature is substantially enhanced by applying an external magnetic field. We further show the multigap nature of superconductivity in KV_3Sb_5 and that the T_c/lambda_{ab}^{-2} ratio is comparable to those of unconventional high-temperature superconductors. Our results point to time-reversal symmetry breaking charge order intertwining with unconventional superconductivity in the correlated kagome lattice.
description: 22 pages, 11 figures
Ideal switching effect in periodic spin-orbit coupling structures
Creators: name: Gong, S. J.
name: Yang, Z. Q.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: An ideal switching effect is discovered in a semiconductor nanowire with a spatially-periodic Rashba structure. Bistable `ON' and `OFF' states can be realized by tuning the gate voltage applied on the Rashba regions. The energy range and position of `OFF' states can be manipulated effectively by varying the strength of the spin-orbit coupling (SOC) and the unit length of the periodic structure, respectively. The switching effect of the nanowire is found to be tolerant of small random fluctuations of SOC strength in the periodic structure. This ideal switching effect might be applicable in future spintronic devices.
description: 4 pages and 4 figures
"ANNALI ONLINE DELLA DIDATTICA E DELLA FORMAZIONE DOCENTE" (vol. 9, n. 13/2017) (fascicolo completo)
Creators: name: Thiene, A Cura Di Arianna
name: Marescotti, Elena
Publisher: name: Università degli Studi di Ferrara
Year: 2017

description: Annali online della Didattica e della Formazione Docente, Vol 9, N° 13 (2017): La scuola al tempo dei social network
Additional file 8 of Comparative analyses of three complete Primula mitogenomes with insights into mitogenome size variation in Ericales
Creators: name: Wei, Lei
name: Liu, Tong-Jian
name: Hao, Gang
name: Ge, Xue-Jun
name: Yan, Hai-Fei
Publisher: name: figshare
Year: 2022
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 8: Figure S8. Correlation of NUMT length and Ericales mitogenome size.
Best subset selection, persistence in high-dimensional statistical learning and optimization under $l_1$ constraint
Creators: name: Greenshtein, Eitan
Publisher: name: arXiv
Year: 2007
Subjects: subject: Statistics Theory (math.ST)
subject: FOS: Mathematics
subject: 62C99 (Primary)

description: Let $(Y,X_1,...,X_m)$ be a random vector. It is desired to predict $Y$ based on $(X_1,...,X_m)$. Examples of prediction methods are regression, classification using logistic regression or separating hyperplanes, and so on. We consider the problem of best subset selection, and study it in the context $m=n^α$, $α>1$, where $n$ is the number of observations. We investigate procedures that are based on empirical risk minimization. It is shown, that in common cases, we should aim to find the best subset among those of size which is of order $o(n/\log(n))$. It is also shown, that in some ``asymptotic sense,'' when assuming a certain sparsity condition, there is no loss in letting $m$ be much larger than $n$, for example, $m=n^α, α>1$. This is in comparison to starting with the ``best'' subset of size smaller than $n$ and regardless of the value of $α$. We then study conditions under which empirical risk minimization subject to $l_1$ constraint yields nearly the best subset. These results extend some recent results obtained by Greenshtein and Ritov. Finally we present a high-dimensional simulation study of a ``boosting type'' classification procedure.
description: Published at http://dx.doi.org/10.1214/009053606000000768 in the Annals of Statistics (http://www.imstat.org/aos/) by the Institute of Mathematical Statistics (http://www.imstat.org)
Elastic Positron-Proton Scattering at Low Q$^2$
Creators: name: Hague, Tyler J.
name: Dutta, Dipangkar
name: Higinbotham, Douglas W.
name: Bai, Xinzhan
name: Gao, Haiyan
name: Gasparian, Ashot
name: Gnanvo, Kondo
name: Khachatryan, Vladimir
name: Khandaker, Mahbub
name: Liyanage, Nilanga
name: Pasyuk, Eugene
name: Peng, Chao
name: Xiong, Weizhi
name: Zhou, Jingyi
Publisher: name: arXiv
Year: 2021
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Systematic differences in the the proton's charge radius, as determined by ordinary atoms and muonic atoms, have caused a resurgence of interest in elastic lepton scattering measurements. The proton's charge radius, defined as the slope of the charge form factor at Q$^2$=0, does not depend on the probe. Any difference in the apparent size of the proton, when determined from ordinary versus muonic hydrogen, could point to new physics or need for the higher order corrections. While recent measurements seem to now be in agreement, there is to date no high precision elastic scattering data with both electrons and positrons. A high precision proton radius measurement could be performed in Hall B at Jefferson Lab with a positron beam and the calorimeter based setup of the PRad experiment. This measurement could also be extended to deuterons where a similar discrepancy has been observed between the muonic and electronic determination of deuteron charge radius. A new, high precision measurement with positrons, when viewed alongside electron scattering measurements and the forthcoming MUSE muon scattering measurement, could help provide new insights into the origins of the proton radius puzzle, and also provide new experimental constraints on radiative correction calculations.
description: 9 pages, 8 figures. arXiv admin note: substantial text overlap with arXiv:2007.15081
Copertina e Frontespizio (Vol. 9, n. 14/2017)
Creators: name: Redazione, La
Publisher: name: Università degli Studi di Ferrara
Year: 2018

description: ---
description: Annali online della Didattica e della Formazione Docente, Vol 9, N° 14 (2017): Strategie e metodologie didattiche in Matematica e nelle Scienze
High Performance Direct Gravitational N-body Simulations on Graphics Processing Units
Creators: name: Zwart, Simon Portegies
name: Belleman, Robert
name: Geldof, Peter
Publisher: name: arXiv
Year: 2007
Subjects: subject: Performance (cs.PF)
subject: FOS: Computer and information sciences

description: We present the results of gravitational direct $N$-body simulations using the commercial graphics processing units (GPU) NVIDIA Quadro FX1400 and GeForce 8800GTX, and compare the results with GRAPE-6Af special purpose hardware. The force evaluation of the $N$-body problem was implemented in Cg using the GPU directly to speed-up the calculations. The integration of the equations of motions were, running on the host computer, implemented in C using the 4th order predictor-corrector Hermite integrator with block time steps. We find that for a large number of particles ($N \apgt 10^4$) modern graphics processing units offer an attractive low cost alternative to GRAPE special purpose hardware. A modern GPU continues to give a relatively flat scaling with the number of particles, comparable to that of the GRAPE. Using the same time step criterion the total energy of the $N$-body system was conserved better than to one in $10^6$ on the GPU, which is only about an order of magnitude worse than obtained with GRAPE. For $N\apgt 10^6$ the GeForce 8800GTX was about 20 times faster than the host computer. Though still about an order of magnitude slower than GRAPE, modern GPU's outperform GRAPE in their low cost, long mean time between failure and the much larger onboard memory; the GRAPE-6Af holds at most 256k particles whereas the GeForce 8800GTF can hold 9 million particles in memory.
description: Submitted to New Astronomy
"ANNALI ONLINE DELLA DIDATTICA E DELLA FORMAZIONE DOCENTE" (vol. 9, n. 14/2017)
Creators: name: Redazione, La
Publisher: name: Università degli Studi di Ferrara
Year: 2018

description: ---
description: Annali online della Didattica e della Formazione Docente, Vol 9, N° 14 (2017): Strategie e metodologie didattiche in Matematica e nelle Scienze
Conservation laws for Electron Vortices in Strong-Field Ionisation
Creators: name: Kang, Yuxin
name: Pisanty, Emilio
name: Ciappina, Marcelo
name: Lewenstein, Maciej
name: Faria, Carla Figueira de Morisson
name: Maxwell, Andrew S
Publisher: name: arXiv
Year: 2021
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Optics (physics.optics)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We investigate twisted electrons with a well defined orbital angular momentum, which have been ionised via a strong laser field. By formulating a new variant of the well-known strong field approximation, we are able to derive conservation laws for the angular momenta of twisted electrons in the cases of linear and circularly polarised fields. In the case of linear fields, we demonstrate that the orbital angular momentum of the twisted electron is determined by the magnetic quantum number of the initial bound state. The condition for the circular field can be related to the famous ATI peaks, and provides a new interpretation for this fundamental feature of photoelectron spectra. We find the length of the circular pulse to be a vital factor in this selection rule and, employing an effective frequency, we show that the photoelectron OAM emission spectra is sensitive to the parity of the number of laser cycles. This work provides the basic theoretical framework with which to understand the OAM of a photoelectron undergoing strong field ionisation.
description: 11 pages, 4 figures and 44 equations. Publication prepared for the EPJ D Topical Issue: Quantum Aspects of Attoscience
Environment and the cosmic evolution of star formation
Creators: name: Sheth, Ravi K.
name: Jimenez, Raul
name: Panter, Ben
name: Heavens, Alan
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present a mark correlation analysis of the galaxies in the Sloan Digital Sky Survey using weights provided by MOPED. The large size of the sample permits statistically significant statements about how galaxies with different metallicities and star formation histories are spatially correlated. Massive objects formed a larger fraction of their stars at higher redshifts and over shorter timescales than did less massive objects (sometimes called down-sizing). We find that those galaxies which dominated the cosmic star formation at z~3 are predominantly in clusters today, whereas galaxies which dominate the star formation at z~0 inhabit substantially lower mass objects in less dense regions today. Hence, our results indicate that star formation and chemical enrichment occured first in the denser regions of the Universe, and moved to less dense regions at later times.
description: 4 pages, 4 figures, submitted to ApJL
Variable Inflaton Equation of State and Reheating
Creators: name: Di Marco, Alessandro
name: Pradisi, Gianfranco
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We explore the consequences of a time-dependent inflaton Equation-of-State (EoS) parameter in the context of the post-inflationary perturbative Boltzmann reheating. In particular, we numerically solve the perturbative coupled system of Boltzmann equations involving the inflaton energy density, the radiation energy density and the related entropy density and temperature of the produced particle thermal bath. We exploit reasonable Ansätze for the EoS and discuss the robustness of the Boltzmann system. We also comment on the possible microscopic origin related to a time dependent inflaton potential, discussing the consequences on a preheating stage and the related (primordial) gravitational waves.
description: 16 pages, 6 figures, minor corrections, references added. Version conformal to the published one
Molecular-Sized Outward-Swinging Gate: Experiment and Theoretical Analysis of a Locally Nonchaotic Barrier
Creators: name: Qiao, Yu
name: Shang, Zhaoru
name: Kou, Rui
Publisher: name: arXiv
Year: 2021
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences
subject: 82M31, 82M37

description: We investigate the concept of molecular-sized outward-swinging gate, which allows for entropy decrease in an isolated system. The theoretical analysis, the Monte Carlo simulation, and the direct solution of governing equations all suggest that under the condition of local nonchaoticity, the probability of particle crossing is asymmetric. It is demonstrated by an experiment on a nanoporous membrane one-sidedly surface-grafted with bendable organic chains. Remarkably, through the membrane, gas spontaneously and repeatedly flows from the low-pressure side to the high-pressure side. While this phenomenon seems counterintuitive, it is compatible with the principle of maximum entropy. The locally nonchaotic gate interrupts the probability distribution of the local microstates, and imposes additional constraints on the global microstates, so that entropy reaches a nonequilibrium maximum. Such a mechanism is fundamentally different from Maxwell's demon and Feynman's ratchet, and is consistent with microscopic reversibility. It implies that useful work may be produced in a cycle from a single thermal reservoir. A generalized form of the second law of thermodynamics is proposed.
description: 19 figures, 1 table
The minimal important difference for St. George’s Respiratory Questionnaire in patients with severe COPD
Creators: name: Welling, Jorrit
Publisher: name: F1000Research
Year: 2015

description: What is the minimal important difference for SGRQ in patients with severe COPD?
We hypothesize that the currently accepted MID for the SGRQ will not stand and will prove to be larger than 4 SGRQ units.
Self-consistent solution for proximity effect and Josephson current in ballistic graphene SNS Josephson junctions
Creators: name: Black-Schaffer, Annica M.
name: Doniach, Sebastian
Publisher: name: arXiv
Year: 2008
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We use a tight-binding Bogoliubov-de Gennes (BdG) formalism to self-consistently calculate the proximity effect, Josephson current, and local density of states in ballistic graphene SNS Josephson junctions. Both short and long junctions, with respect to the superconducting coherence length, are considered, as well as different doping levels of the graphene. We show that self-consistency does not notably change the current-phase relationship derived earlier for short junctions using the non-selfconsistent Dirac-BdG formalism but predict a significantly increased critical current with a stronger junction length dependence. In addition, we show that in junctions with no Fermi level mismatch between the N and S regions superconductivity persists even in the longest junctions we can investigate, indicating a diverging Ginzburg-Landau superconducting coherence length in the normal region.
description: 8 pages, 6 figures
ТЕХНОЛОГИЯ ТАЪЛИМИ ЎҚИТУВЧИЛАРИНИ ДИЗАЙНЕРЛИК ҚОБИЛИЯТЛАРИ РИВОЖЛАНТИРИШДА ЎҚИТИШНИНГ ТАЪЛИМ МЕТОДЛАРИ  УЙҒУНЛИГИНИ ТАЪМИНЛАШ
Creators: name: Сатволдиева, Малохатхон
Publisher: name: Zenodo
Year: 2024

description: Технология таълим ўқитувчиларини дизайнерлик қобилиятларини ривожлантиришда ўқитишнинг таълим методларидан фойдаланиш усуллари, анъанавий хамда ноанъанавий  методларни самараси,  4 поғонали меддодларни қўллашда замонавий технологик усуллар, амалиётни ташкил этиш, дизайнерликни ривожлантириш жараёнлари ва натижалари уйғунлигини таъминлашдан иборат.
Investigation on pharmacokinetic profile of Kaempferol Nanosuspension (KNS)
Creators: name: Yew, Sheng Qian
Publisher: name: F1000Research
Year: 2015

description: Will the bioavailability of kaempferol nanosuspension be improved compared to pure kaempferol in male sprague dawley rats?
Kaempferol nanosuspension with smaller particle size (451 nm) was effectively produced using the high-pressure homogenization method.
Physicochemical characteristic of kaempferol nanosuspension confirmed that the structure integrity was maintained after homogenization despite a significant reduction in particle size.
A multivariate empirical Bayes statistic for replicated microarray time course data
Creators: name: Tai, Yu Chuan
name: Speed, Terence P.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Statistics Theory (math.ST)
subject: FOS: Mathematics
subject: 62M10 (Primary) 62C12, 92D10 (Secondary)

description: In this paper we derive one- and two-sample multivariate empirical Bayes statistics (the $\mathit{MB}$-statistics) to rank genes in order of interest from longitudinal replicated developmental microarray time course experiments. We first use conjugate priors to develop our one-sample multivariate empirical Bayes framework for the null hypothesis that the expected temporal profile stays at 0. This leads to our one-sample $\mathit{MB}$-statistic and a one-sample $\widetilde{T}{}^2$-statistic, a variant of the one-sample Hotelling $T^2$-statistic. Both the $\mathit{MB}$-statistic and $\widetilde{T}^2$-statistic can be used to rank genes in the order of evidence of nonzero mean, incorporating the correlation structure across time points, moderation and replication. We also derive the corresponding $\mathit{MB}$-statistics and $\widetilde{T}^2$-statistics for the one-sample problem where the null hypothesis states that the expected temporal profile is constant, and for the two-sample problem where the null hypothesis is that two expected temporal profiles are the same.
description: Published at http://dx.doi.org/10.1214/009053606000000759 in the Annals of Statistics (http://www.imstat.org/aos/) by the Institute of Mathematical Statistics (http://www.imstat.org)
Global regularity results for non-homogeneous growth fractional problems
Creators: name: Giacomoni, Jacques
name: Kumar, Deepak
name: Sreenadh, K.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: This article concerns with the global Hölder regularity of weak solutions to a class of problems involving the fractional $(p,q)$-Laplacian, denoted by $(-Δ)^{s_1}_{p}+(-Δ)^{s_2}_{q}$, for $1
Editoriale / Paulo Freire (1921-1997): suggestioni per la scuola e gli insegnanti di oggi e di domani
Creators: name: Marescotti, Elena
Publisher: name: Università degli Studi di Ferrara
Year: 2021

description: ---
description: Annali online della Didattica e della Formazione Docente, Vol 13, N° 22 (2021): Miscellanea
Multidimensional Biomarker Research on the Efficacy of Human Umbilical Cord Mesenchymal Stem Cell Therapy for Aging
Creators: name: 夏璐(Lu Xia)
Publisher: name: CNGB
Year: 2024
Subjects: Raw sequence reads
Metabolome
Multispecies
Medical

description: The current study collectively advance our understanding of how MSCs exert systemic protective effects against aging-related degeneration and support further exploration into their role within the microbiome-metabolite framework for developing effective treatments for age-related conditions.
Heart rate variability and autonomic status in patients with diabetes mellitus type 2
Creators: name: Zavgorodnya, Kateryna
Publisher: name: F1000Research
Year: 2015

description: According to WHO almost 50% of diabetes affected patients have the same degree of neuropathy.
Diabetic neuropathy is associated with a 20% increase in the number of patients visiting hospitals.
The results of HRV analysis, cardiovascular tests and VASS scores were indicative of the autonomic nervous system impairment in diabetic patients.
Kerr effect in tilted nodal loop semimetals
Creators: name: Ekström, Johan
name: Hasdeo, Eddwi H.
name: Farias, M. Belén
name: Schmidt, Thomas L.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We investigate the optical activity of tilted nodal loop semimetals. We calculate the full conductivity matrix for a band structure containing a nodal loop with possible tilt in the $x-y$ plane, which allows us to study the Kerr rotation and ellipticity both for a thin film and a bulk material. We find signatures in the Kerr signal that give direct information about the tilt velocity and direction, the radius of the nodal loop and the internal chemical potential of the system. These findings should serve as guide to understanding optical measurements of nodal loop semimetals and as an additional tool to characterize them.
description: 9 pages, 8 figures
Insegnare la cittadinanza sostenibile. Significati e prospettive sull’educazione civica
Creators: name: Bornatici, Sara
Publisher: name: Università degli Studi di Ferrara
Year: 2021

description: Abstract – Which directions should prefigure training courses offered to teachers who approach the teaching of civic education in schools of all levels, as required by Law 92/2019, follow? What are the most urgent challenges teachers face when training younger generations to live according to the perspective of global citizenship and to promote an authentic cultural change? The results of the research-action CIVES (Citizens Towards Sustainability) which has involved through a training course about one hundred teachers among different schools in the city of Brescia, suggest some guidelines of rethinking teachers training according to a perspective of sustainability. The essay identifies in working together, in building networks with the territory and in facing the challenge of combining, according to a transdisciplinary approach, the environment, economic progress and the common good, three drivers to promote a full human development. Riassunto – Quali direzioni di senso devono prefigurare gli itinerari formativi proposti ai docenti che si accostano all’insegnamento dell’educazione civica, come previsto dalla Legge 92/2019, nelle scuole di ogni ordine e grado? Quali sono le sfide più urgenti con cui gli insegnanti si devono confrontare per formare le giovani generazioni a vivere nella prospettiva della cittadinanza globale e promuovere un autentico cambiamento culturale? Gli esiti della ricerca-azione CIVES (CIttadini VErso la Sostenibilità), che ha coinvolto in un percorso formativo circa cento docenti in servizio negli istituti scolastici bresciani, suggeriscono alcune direttrici di senso per ripensare la formazione dei docenti secondo la prospettiva della sostenibilità. Il saggio individua nel lavorare insieme, nella costruzione di reti con il territorio e nella sfida di coniugare, secondo un approccio transdisciplinare, ambiente, progresso economico e bene comune tre orizzonti per promuovere uno sviluppo pienamente umano. Keywords – education, training, sustainability, teachers, global citizenship Parole chiave – educazione, formazione, sostenibilità, insegnanti, cittadinanza globale
description: Annali online della Didattica e della Formazione Docente, Vol 13, N° 22 (2021): Miscellanea
title: Colour change kinetics of pumpkin (Cucurbita moschata) slices during convective air drying and bioactive compounds of the dried products
Creators: name: Chikpah, Solomon Kofi
name: Korese, Joseph Kudadam
name: Sturm, Barbara
name: Hensel, Oliver
Publisher: name: KOBRA Universität Kassel
Year: 2022
Subjects: subject: bioactive compounds
subject: colour change kinetics
subject: convective air drying
subject: effective moisture diffusivity
subject: pumpkin
classificationCode: 630
subject: 630
classificationCode: Bioaktive Verbindungen
subject: Bioaktive Verbindungen
classificationCode: Farbwechsel
subject: Farbwechsel
classificationCode: Kinetik
subject: Kinetik
classificationCode: Trockenlebensmittel
subject: Trockenlebensmittel
classificationCode: Lufttrocknung
subject: Lufttrocknung
classificationCode: Konvektionstrocknung
subject: Konvektionstrocknung
classificationCode: Kürbis
subject: Kürbis

description:
The high contents of bioactive compounds make the pumpkin fruit an important crop for the development of novel functional foods for improving food security, nutrition and health. This study investigated the effect of drying air temperatures (50, 60 and 70 °C) and slice thicknesses (3 and 5 mm) on the drying behaviour, colour change kinetics and bioactive compounds content of the dried pumpkin slices. The effective moisture diffusivity of pumpkin increased from 2.860 × 10−10 to 9.815 × 10−10 m²/s as drying temperature increased while activation energy values ranged between 47.14 and 51.60 kJ/mol. After the drying process, Lightness (L) and yellowness (b) values of pumpkin decreased from 74.61 ± 1.18 to 56.50–70.15 and 61.95 ± 2.03 to 51.90–56.10, respectively whereas redness (a) and total colour difference (ΔE) increased from 8.47 ± 0.09 to 9.98–11.07 and 0 to 10.01–17.12, respectively. Changes in L and b values during drying were adequately predicted by the first-order reaction kinetics while a and ΔE followed zero-order reaction kinetics (R² = 0.9765 to 0.9978). The reaction rate constants for colour change greatly depended on the drying air temperature. Contents of β-carotene, ascorbic acid, total phenols, flavonoids and antioxidant activity of the dried pumpkins varied between 43.80 and 58.15 μg g−1, 37.62–50.13 mg/100g, 109.60–155.92 mg GAE/100g, 49.68–67.74 mg kaempferol/100g and 61.45–80.72%, respectively. Predominantly, an increase in pumpkin slice thickness prolonged drying time and caused a greater loss of bioactive compounds and antioxidant activity. Moreover, β-carotene and ascorbic acid contents were higher in 60 °C dried pumpkin than those dried at 50 °C and 70 °C. Nonetheless, increasing the drying air temperature increased the total phenolic compounds and flavonoid contents in dried pumpkin products. The study results could be useful for the food industry and further research work.
Hedging with options on commodity futures contracts: a safety-first versus expected utility approach
Creators: name: Gaspar, Victor J.
Publisher: name: University of British Columbia
Year: 2009

description: This study evaluates how a decision-maker (such as a farmer) facing output price risk might use futures contracts and or option contracts on those futures to hedge against any potential financial risk attributed to volatile output prices. Two behavioral models are assumed in this study. One where the decision-maker behaves as an expected utility maximizer and one where the decisions made are based upon safety-first rules. The expected utility model in this study is based on the general utility function defined in an article by Lapan, Moschini, and Hanson (1991). The safety-first model is essentially that of Telser (1955), but enhanced to include option contracts as an additional hedging tool. Both decision-making processes have a single-period time horizon. At the beginning of the period an agent enters the futures and option markets and places a hedge. At the end of the period, the agent offsets his/her futures position and sells the commodity in the spot market. The single-period model is formulated such that a hedger can speculate on the futures price bias, but not the volatility of the option price. Results from the two competing models were derived from parameters calculated using a forecast error method on canola data spanning a ten year period (1981-90) obtained from the Winnipeg Commodity Exchange. Optimal hedging results for the two models were derived under varying levels of basis risk, futures and spot price volatilities, and risk aversion. In general, results from the expected utility model suggest that under increased volatility, uncertainty, or aversion to risk leads to a reduced open speculative position when a positive futures price bias exists. Most interestingly, unlike the comparative static results derived by Lapan, Moschini, and Hanson suggesting that if a speculative motive exists then options are used, the results from this study’s simulations suggest that the use of options are negligible. Results from assuming a safety-first decision-maker indicate that options are always used when speculating on the direction of futures price bias. When positive futures price biases increase in size, so do the futures and options positions. The opposite occurs when the bias is decreased or downward. Two major conclusions can be drawn from the safety-first results. Firstly, optimal hedging positions seem quite sensitive to “small” variations in the parameters levels. Secondly, due to the multitude of revenue distributions available from combining futures and option (which were unobtainable from using only futures) there is a possibility of very extreme outcomes even though the expected or average outcome meets the decision-maker’s “ safety” requirements.
Additional file 7 of Comparative analyses of three complete Primula mitogenomes with insights into mitogenome size variation in Ericales
Creators: name: Wei, Lei
name: Liu, Tong-Jian
name: Hao, Gang
name: Ge, Xue-Jun
name: Yan, Hai-Fei
Publisher: name: figshare
Year: 2022
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 7: Figure S7. The newly identified gene clusters of each Ericales mitogenome. The red cell indicates the existence of one specific gene cluster.
Real-Time Ellipse Detection for Robotics Applications
Creators: name: Keipour, Azarakhsh
name: Pereira, Guilherme A. S.
name: Scherer, Sebastian
Publisher: name: arXiv
Year: 2021
Subjects: subject: Robotics (cs.RO)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Image and Video Processing (eess.IV)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: We propose a new algorithm for real-time detection and tracking of elliptic patterns suitable for real-world robotics applications. The method fits ellipses to each contour in the image frame and rejects ellipses that do not yield a good fit. The resulting detection and tracking method is lightweight enough to be used on robots' resource-limited onboard computers, can deal with lighting variations and detect the pattern even when the view is partial. The method is tested on an example application of an autonomous UAV landing on a fast-moving vehicle to show its performance indoors, outdoors, and in simulation on a real-world robotics task. The comparison with other well-known ellipse detection methods shows that our proposed algorithm outperforms other methods with the F1 score of 0.981 on a dataset with over 1500 frames. The videos of experiments, the source codes, and the collected dataset are provided with the paper at https://theairlab.org/landing-on-vehicle .
description: Accepted to RA-L and IROS 2021
Estimating Be Star Disk Radii using H-alpha Emission Equivalent Widths
Creators: name: Grundstrom, Erika D.
name: Gies, Douglas R.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present numerical models of the circumstellar disks of Be stars, and we describe the resulting synthetic H-alpha emission lines and maps of the wavelength-integrated emission flux projected onto the sky. We demonstrate that there are monotonic relationships between the emission line equivalent width and the ratio of the angular half-width at half maximum of the projected disk major axis to the radius of the star. These relationships depend mainly upon the temperatures of the disk and star, the inclination of the disk normal to the line of sight, and the adopted outer boundary for the disk radius. We show that the predicted H-alpha disk radii are consistent with those observed directly through long baseline interferometry of nearby Be stars (especially once allowance is made for disk truncation in binaries and for dilution of the observed H-alpha equivalent width by continuum disk flux in the V-band).
description: 12 pages, 2 figures, ApJL in press
Verification of asymptotic homogenization method developed for periodic architected materials in strain gradient continuum
Creators: name: Yang, Hua
name: Abali, Bilen Emek
name: Müller, Wolfgang H.
name: Barboura, Salma
name: Li, Jia
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computational Engineering, Finance, and Science (cs.CE)
subject: FOS: Computer and information sciences

description: Strain gradient theory is an accurate model for capturing the size effect and localization phenomena. However, the challenge in identification of corresponding constitutive parameters limits the practical application of the theory. We present and utilize asymptotic homogenization herein. All parameters in rank four, five, and six tensors are determined with the demonstrated computational approach. Examples for epoxy carbon fiber composite, metal matrix composite, and aluminum foam illustrate the effectiveness and versatility of the proposed method. The influences of volume fraction of matrix, the stack of RVEs, and the varying unit cell lengths on the identified parameters are investigated. The homogenization computational tool is applicable to a wide class materials and makes use of open-source codes in FEniCS. We make all of the codes publicly available in order to encourage a transparent scientific exchange.
Theoretical Study of Isotope Production in The Peripheral Heavy-ion Collision 136Xe + Pb at 1 GeV/nucleon
Creators: name: Imal, H.
name: Ogul, R.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Nuclear Theory (nucl-th)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: We have studied the fragment yields emitted from the fragmentation of excited projectile nuclei in peripheral collisions of 136Xe+Pb at 1 GeV/nucleon, and measured with the high-resolution magnetic spectrometer, the Fragment Separator (FRS) of GSI. The mass, charge and isotope distributions of nuclear fragments formed in the reactions were calculated within a statistical ensemble approach and compared to the experimental data. The ensemble of excited projectilelike source nuclei were created in the framework of a previous analysis of similar reactions performed at 600 MeV/nucleon (ALADIN-experiments, GSI). In addition, the ensemble of the low-excited compound nuclei is involved in the analysis. The overall agreement between theory and experiment was very satisfactory in reproducing the experimental data of isotope yields measured in the heavy-ion collisions. It is confirmed that a broad range of elements can be reproduced within a universal statistical disintegration of the excited projectile residues.
description: 12 pages, 2 figures and one table. arXiv admin note: text overlap with arXiv:0806.3455, arXiv:1912.09277, arXiv:nucl-th/0510081 by other authors
Sul tempo educante. Torsioni e distorsioni della temporalità formativa post-2020
Creators: name: Bufalino, Giambattista
name: D'Aprile, Gabriella
name: Strongoli, Raffaella C.
Publisher: name: Università degli Studi di Ferrara
Year: 2021

description: Abstract – The current historical and cultural context has accelerated pedagogical reflection on the impact of the pandemic emergency on learning processes, necessitating ongoing adaptation. Based on this premise, this contribution proposes an innovative reflection on one of the structural and foundational aspects of the pedagogical device - temporality in education - through a critical lens that differs from the most traditional educational paradigms. Two unusual cultural elaborations of temporality, Kronos and Kairos, will be presented with the goal of redefining and rethinking the concept of time, which should be promoted authentically, a time "debt" inspired by kairology. Based on these developments, the contribution advances an innovative perspective to reconsider a slow time of educating and learning in nature. Riassunto – La congiuntura storico-culturale attuale ha imposto un’accelerazione alla riflessione pedagogica e didattica sull’impatto che l’emergenza pandemica ha avuto sul terreno dei processi formativi e di apprendimento, chiamati a un continuo adattamento e ripensamento di tempi e spazi dell’educazione. Su tale premessa, questo contributo propone, medianti chiavi critico-interpretative distanti dai più convenzionali paradigmi educativi, una riflessione su uno degli aspetti strutturali e fondativi del dispositivo pedagogico, quello della temporalità in educazione. In maniera precipua, saranno presentate due peculiari elaborazioni culturali della temporalità - Kronos e Kairos - con l’intento di ridefinire e ripensare le coordinate di orientamento di un tempo che possa dirsi autenticamente educativo ed educante, un tempo “debito”, di ispirazione kairologica. Su tali sviluppi, il contributo avanza una prospettiva per configurare un tempo lento dell’educare e dell’apprendere in natura. Parole chiave – tempo educante, Kairos, educazione alla lentezza, apprendimento, educazione in natura Keywords – educating time, Kairos, slow education, learning, education in nature
description: Annali online della Didattica e della Formazione Docente, Vol 13, N° 22 (2021): Miscellanea
Implementation of an alternative method for assessing competing risks: restricted mean time lost
Creators: name: Wu, Hongji
name: Yuan, Hao
name: Yang, Zijing
name: Hou, Yawen
name: Chen, Zheng
Publisher: name: arXiv
Year: 2021
Subjects: subject: Applications (stat.AP)
subject: Methodology (stat.ME)
subject: FOS: Computer and information sciences

description: In clinical and epidemiological studies, hazard ratios are often applied to compare treatment effects between two groups for survival data. For competing risks data, the corresponding quantities of interest are cause-specific hazard ratios (cHRs) and subdistribution hazard ratios (sHRs). However, they both have some limitations related to model assumptions and clinical interpretation. Therefore, we recommend restricted mean time lost (RMTL) as an alternative that is easy to interpret in a competing risks framework. Based on the difference in restricted mean time lost (RMTLd), we propose a new estimator, hypothetical test and sample size formula. The simulation results show that the estimation of the RMTLd is accurate and that the RMTLd test has robust statistical performance (both type I error and power). The results of three example analyses also verify the performance of the RMTLd test. From the perspectives of clinical interpretation, application conditions and statistical performance, we recommend that the RMTLd be reported with the HR in the analysis of competing risks data and that the RMTLd even be regarded as the primary outcome when the proportional hazard assumption fails. The R code (crRMTL) is publicly available from Github (https://github.com/chenzgz/crRMTL.1). Keywords: survival analysis, competing risks, hazard ratio, restricted mean time lost, sample size, hypothesis test
description: The R code (crRMTL) is publicly available from Github (https://github.com/chenzgz/crRMTL.1)
Theory of measurement crosstalk in superconducting phase qubits
Creators: name: Kofman, A. G.
name: Zhang, Q.
name: Martinis, J. M.
name: Korotkov, A. N.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We analyze the crosstalk error mechanism in measurement of two capacitively coupled superconducting flux-biased phase qubits. The damped oscillations of the superconducting phase after the measurement of the first qubit may significantly excite the second qubit, leading to its measurement error. The first qubit, which is highly excited after the measurement, is described classically. The second qubit is treated both classically and quantum-mechanically. The results of the analysis are used to find the upper limit for the coupling capacitance (thus limiting the frequency of two-qubit operations) for a given tolerable value of the measurement error probability.
description: 16 pages, Revtex; minor changes in the text and figures