cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Suburb-to-suburb commuting and transit planning : a case study of Surrey, B.C.
Creators: name: Murray, Peter S.
Publisher: name: University of British Columbia
Year: 2008

description: Rapid growth in suburb-to-suburb commuting has created a problem for transit providers: the dispersed commuting patterns are very difficult to serve with transit, and are characterized by low transit use. This thesis aims to determine which markets have the best potential for transit, and what factors could increase this potential. Surrey, B.C. is typical of the rapidly growing areas where suburb-to-suburb commuting is most prevalent. Commuting between Surrey and other suburban areas has increased sharply in recent years. A detailed examination of commuting patterns within Surrey revealed the highly dispersed nature of the work trip flows; the only flows which were concentrated to any degree were those between nodes with relatively high population and employment densities. A correlation was found between density, especially employment density, and transit use. Inter-nodal trips, which already have the greatest transit use among suburb-to-suburb trips, will be a key market for transit in the suburbs. Inter-nodal express service would help to address complaints that suburb-to-suburb transit service is too slow and indirect. Trips to and from the nodes will also be an important market. Intra-nodal trips, which presently have low transit use, form another key market which could possibly be served by a paratransit shuttle service. In Surrey, efforts have begun to address the issue of suburb-to-suburb transit in a comprehensive manner, but there has been little substantive progress to date. The case study results were used to develop a conceptual framework for suburb-to-suburb transit planning which could then be applied to other suburban areas facing similar problems. The framework calls for a wide array of transit and paratransit services, each filling a different market niche, which can be combined to create an integrated but flexible system. This system must be reinforced with land use strategies to promote greater densities, and more pedestrian and transit friendly design. Transportation demand management must also be used to encourage transit use by increasing the costs of driving an automobile. This three-pronged, comprehensive approach should allow transit to compete successfully in some suburban markets.
Density-functional formulations for quantum chains
Creators: name: Alcaraz, Francisco C.
name: Capelle, Klaus
Publisher: name: arXiv
Year: 2007
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We show that a lattice formulation of density-functional theory (DFT), guided by renormalization-group concepts, can be used to obtain numerical predictions of energy gaps, spin-density profiles, critical exponents, sound velocities, surface energies and conformal anomalies of spatially inhomogeneous quantum spin chains. To this end we (i) cast the formalism of DFT in the notation of quantum-spin chains, to make the powerful methods and concepts developed in {\em ab initio} DFT available to workers in this field; (ii) explore to what extent simple local approximations in the spirit of the local-density approximation (LDA), can be used to predict critical exponents and conformal anomalies of quantum spin models; (iii) propose and explore various nonlocal approximations, depending on the size of the system, or on its average density in addition to the local density. These nonlocal functionals turn out to be superior to LDA functionals.
description: 7 figures, 5 tables
Additional file 5 of Investigating the mechanism of Xian-ling-lian-xia-fang for inhibiting vasculogenic mimicry in triple negative breast cancer via blocking VEGF/MMPs pathway
Creators: name: Li, Feifei
name: Shi, Youyang
name: Zhang, Yang
name: Yang, Xiaojuan
name: Wang, Yi
name: Jiang, Kexin
name: Hua, Ciyi
name: Wu, Chunyu
name: Sun, Chenping
name: Qin, Yuenong
name: Liu, Sheng
Publisher: name: figshare
Year: 2022
Subjects: Biophysics
Biochemistry
Cell Biology
Molecular Biology
Pharmacology
Biotechnology
Chemical Sciences not elsewhere classified
Biological Sciences not elsewhere classified
Developmental Biology
Cancer

description: Additional file 5: Table S5 Target protein docking results for compounds
¿Sabía usted que el alcanfor en pomadas o ungüento, cuando se ingiere, lo puede llevar al más allá?
Creators: name: Centro de Información de Medicamentos de la Universidad Nacional
Publisher: name: Zenodo
Year: 2024

description: El alcanfor es un compuesto terpénico derivado del árbol de alcanfor (Cinnamomum camphora). Tiene propiedades antiinflamatorias, antitusivas, analgésicas, antiespasmódicas, antisépticas y descongestionantes. Aunque su uso terapéutico es tópico o inhalado, se conoce que hay personas que lo utilizan por vía oral. Esto ha causado intoxicaciones.

Aquí presentamos información sobre este producto natural, los riesgos asociados al uso por vía oral, y algunas recomendaciones.
Witnessing entanglement in quantum magnets using neutron scattering
Creators: name: Scheie, A.
name: Laurell, Pontus
name: Samarakoon, A. M.
name: Lake, B.
name: Nagler, S. E.
name: Granroth, G. E.
name: Okamoto, S.
name: Alvarez, G.
name: Tennant, D. A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We demonstrate how quantum entanglement can be directly witnessed in the quasi-1D Heisenberg antiferromagnet KCuF$_3$. We apply three entanglement witnesses --- one-tangle, two-tangle, and quantum Fisher information --- to its inelastic neutron spectrum, and compare with spectra simulated by finite-temperature density matrix renormalization group (DMRG) and classical Monte Carlo methods. We find that each witness provides direct access to entanglement. Of these, quantum Fisher information is the most robust experimentally, and indicates the presence of at least bipartite entanglement up to at least 50 K, corresponding to around 10% of the spinon zone-boundary energy. We apply quantum Fisher information to higher spin-S Heisenberg chains, and show theoretically that the witnessable entanglement gets suppressed to lower temperatures as the quantum number increases. Finally, we outline how these results can be applied to higher dimensional quantum materials to witness and quantify entanglement.
description: 9 pages and 5 figures, four pages and six figures of appendices, and five pages supplemental information
Deep Learning for High-Impedance Fault Detection: Convolutional Autoencoders
Creators: name: Rai, Khushwant
name: Hojatpanah, Farnam
name: Ajaei, Firouz Badrkhani
name: Grolinger, Katarina
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: Signal Processing (eess.SP)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: High-impedance faults (HIF) are difficult to detect because of their low current amplitude and highly diverse characteristics. In recent years, machine learning (ML) has been gaining popularity in HIF detection because ML techniques learn patterns from data and successfully detect HIFs. However, as these methods are based on supervised learning, they fail to reliably detect any scenario, fault or non-fault, not present in the training data. Consequently, this paper takes advantage of unsupervised learning and proposes a convolutional autoencoder framework for HIF detection (CAE-HIFD). Contrary to the conventional autoencoders that learn from normal behavior, the convolutional autoencoder (CAE) in CAE-HIFD learns only from the HIF signals eliminating the need for presence of diverse non-HIF scenarios in the CAE training. CAE distinguishes HIFs from non-HIF operating conditions by employing cross-correlation. To discriminate HIFs from transient disturbances such as capacitor or load switching, CAE-HIFD uses kurtosis, a statistical measure of the probability distribution shape. The performance evaluation studies conducted using the IEEE 13-node test feeder indicate that the CAE-HIFD reliably detects HIFs, outperforms the state-of-the-art HIF detection techniques, and is robust against noise.
Uso de Medicamentos Antirretrovirales en la Prevención del VIH: Profilaxis Pre- Exposición y Profilaxis Post- Exposición
Creators: name: Centro de Información de Medicamentos de la Universidad Nacional
Publisher: name: Zenodo
Year: 2024

description: Los medicamentos para el VIH no solo se usan para tratamiento de pacientes infectados, sino también para la prevención en personas en riesgo. Colombia cuenta con estrategias de prevención de la transmisión del VIH en las que se administran medicamentos antirretrovirales. 

La primera estrategia va encaminada a personas que no están infectadas pero que por sus actividades o conductas están en riesgo de adquirir VIH. Se conoce como la Profilaxis Pre- Exposición. 

La segunda se dirige a personas que en las últimas horas se enfrentaron a una situación que las puso en riesgo de contagio con VIH. Esta es la Profilaxis Post- Exposición. 

A continuación, presentamos información sobre estas estrategias.
Breakdown of the few-level approximation in collective systems
Creators: name: Kiffner, M.
name: Evers, J.
name: Keitel, C. H.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The validity of the few-level approximation in dipole-dipole interacting collective systems is discussed. As example system, we study the archetype case of two dipole-dipole interacting atoms, each modelled by two complete sets of angular momentum multiplets. We establish the breakdown of the few-level approximation by first proving the intuitive result that the dipole-dipole induced energy shifts between collective two-atom states depend on the length of the vector connecting the atoms, but not on its orientation, if complete and degenerate multiplets are considered. A careful analysis of our findings reveals that the simplification of the atomic level scheme by artificially omitting Zeeman sublevels in a few-level approximation generally leads to incorrect predictions. We find that this breakdown can be traced back to the dipole-dipole coupling of transitions with orthogonal dipole moments. Our interpretation enables us to identify special geometries in which partial few-level approximations to two- or three-level systems are valid.
¿Sabía usted que el consumo de Cannabis o sus productos derivados en combinación con diferentes medicamentos puede potenciar los efectos adversos?
Creators: name: Centro de Información de Medicamentos de la Universidad Nacional
Publisher: name: Zenodo
Year: 2024

description: Los productos de origen natural también pueden afectar su salud. En el caso del cannabis, cuando se usa al tiempo con medicamentos tan comunes como los antihistamínicos o el acetaminofén,  hay riesgo de que aumenten los efectos adversos. Las afectaciones pueden ser aún peores cuando se combinan con opioides. Y así hay varios medicamentos cuyo uso concomitante con cannabis es riesgoso.

Aquí se listan interacciones comunes con cannabis.
Acessibilidade dos repositórios digitais para deficientes visuais
Creators: name: Araujo, Aline Karoline Da Silva
Publisher: name: Cadernos BAD
Year: 2022

description: Pretende-se discorrer sobre a importância do movimento Open Access (Acesso Aberto) para a disponibilização da literatura acadêmica e científica, sem restrição (quando legais) de acesso, uso e disseminação, tornando-se, assim, uma ferramenta relevante para os deficientes visuais, pois o acesso livre à informação científica não representa apenas a promoção de acesso ao seu conteúdo, mas também a eliminação das barreiras que dão acesso a ele. Apresenta brevemente as origens do termo “repositórios digitais”, seus tipos e características. Tem como objetivo principal verificar a acessibilidade para deficientes visuais das páginas Web de dois repositórios institucionais da região Nordeste do Brasil: a Biblioteca Digital de Monografias da Universidade Federal do Rio Grande do Norte e a Biblioteca Digital de Teses e Dissertações da Universidade Federal Rural do Semi-árido. Utiliza como metodologia a pesquisa bibliográfica, com levantamento de literatura que trata sobre o tema abordado em diferentes tipos de fontes, e a pesquisa exploratória, que se utilizará de observação e da análise para identificar como ocorre a acessibilidade à informação para deficientes visuais na amostra de pesquisa, buscando-se também, caso seja necessário, sugerir possíveis alterações na situação pesquisada. Para o levantamento de dados, pretende-se fazer uso da ferramenta AccessMonitor, um validador automático disponibilizado pela Fundação para a Ciência e Tecnologia (FCT) de Portugal, que verificará a aplicação das diretrizes de acessibilidade das telas iniciais dos repositórios, levando em consideração as diretrizes de acessibilidade criadas pelo World Wide Web Consortium (W3C) e a utilização de dois dos atributos e recomendações propostos por Vechiato e Vidotti (Acessibilidade e Usabilidade) para analisar a encontrabilidade da informação em ambientes informacionais digitais. Pretende-se responder ao problema de pesquisa de como ocorre a acessibilidade informacional para os deficientes visuais nos dois repositórios institucionais pesquisados, e propor, se for o caso, caminhos para potencializar o acesso à informação pelos deficientes visuais nessas bases de dados on-line. É inegável o importante papel da Ciência Aberta, através dos repositórios digitais, em especial dos repositórios institucionais, na democratização da informação e do conhecimento científico institucional. No entanto, para que estes repositórios cumpram completamente a sua função de oferecer acesso a qualquer usuário, independentemente da sua limitação ou deficiência, eles precisam apresentar uma acessibilidade Web apropriada. O cerne de meu interesse acadêmico está em buscar formas de que a informação científica esteja ao alcance dos cidadãos com deficiência visual nesses repositórios brasileiros pesquisados. Palavras-chave: Acesso aberto; Acessibilidade Web – Repositórios institucionais; Deficientes visuais – Inclusão digital.
description: Cadernos BAD, N.º 1-2 (2021): Atas da 12ª Conferência Luso-Brasileira de Ciência Aberta (ConfOA)
Perturbative benchmark models for a dark shower search program
Creators: name: Knapen, Simon
name: Shelton, Jessie
name: Xu, Dong
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We provide five benchmark hidden valley models with perturbative parton showers, which span a wide range of dark shower phenomenology. We consider production through an $s$-channel, heavy mediator, which can be identified with the SM Higgs. By assuming a set of well-motivated decay portals, one can moreover fix both the branching ratios of the dark mesons and set a lower bound on their lifetime. We provide a public python tool which can be used to generate self-consistent PYTHIA 8 cards for our benchmark models.
description: 17 pages, 10 figures, python code available at https://gitlab.com/simonknapen/dark_showers_tool Journal version. Compared to v1, a conceptual error was corrected related to the interpretation of the pythia hadronization module. Conclusions unchanged
The adjusted Viterbi training for hidden Markov models
Creators: name: Lember, Jüri
name: Koloydenko, Alexey
Publisher: name: arXiv
Year: 2008
Subjects: subject: Computation (stat.CO)
subject: FOS: Computer and information sciences

description: The EM procedure is a principal tool for parameter estimation in the hidden Markov models. However, applications replace EM by Viterbi extraction, or training (VT). VT is computationally less intensive, more stable and has more of an intuitive appeal, but VT estimation is biased and does not satisfy the following fixed point property. Hypothetically, given an infinitely large sample and initialized to the true parameters, VT will generally move away from the initial values. We propose adjusted Viterbi training (VA), a new method to restore the fixed point property and thus alleviate the overall imprecision of the VT estimators, while preserving the computational advantages of the baseline VT algorithm. Simulations elsewhere have shown that VA appreciably improves the precision of estimation in both the special case of mixture models and more general HMMs. However, being entirely analytic, the VA correction relies on infinite Viterbi alignments and associated limiting probability distributions. While explicit in the mixture case, the existence of these limiting measures is not obvious for more general HMMs. This paper proves that under certain mild conditions, the required limiting distributions for general HMMs do exist.
description: Published in at http://dx.doi.org/10.3150/07-BEJ105 the Bernoulli (http://isi.cbs.nl/bernoulli/) by the International Statistical Institute/Bernoulli Society (http://isi.cbs.nl/BS/bshome.htm)
Gabapentinoides: Necesidad de dar un buen uso ante su potencial de abuso.
Creators: name: Centro de Información de Medicamentos de la Universidad Nacional
name: Aponte-Gonzalez, Johanna
name: Mesa, Yuly Susana
Publisher: name: Zenodo
Year: 2024

description: La pregabalina y la gabapentina son dos fármacos con estructura análoga al GABA, que actúan como depresores del sistema nervioso al reducir la excitabilidad neuronal por la disminución en la liberación de neurotransmisores mediada por calcio. Es por eso que ocupan un lugar en el tratamiento tanto de las convulsiones como del dolor. Mientras pueden ser vistos como una opción de ‘bajo riesgo’ para manejo del dolor, en medio de una crisis de opioides, hay voces alrededor del mundo que alertan sobre su potencial mal uso y abuso, así como la utilización en prácticas recreativas. En este reporte se presenta una corta revisión de los gabapentinoides, sus beneficios y potenciales riesgos.
Probing the bright exciton state in twisted bilayer graphene via resonant Raman scattering
Creators: name: DeCapua, Matthew C.
name: Wu, Yueh-Chun
name: Taniguchi, Takashi
name: Watanabe, Kenji
name: Yan, Jun
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The band structure of bilayer graphene is tunable by introducing a relative twist angle between the two layers, unlocking exotic phases, such as superconductor and Mott insulator, and providing a fertile ground for new physics. At intermediate twist angles around 10°, highly degenerate electronic transitions hybridize to form excitonic states, a quite unusual phenomenon in a metallic system. We probe the bright exciton mode using resonant Raman scattering measurements to track the evolution of the intensity of the graphene Raman G peak, corresponding to the E2g phonon. By cryogenically cooling the sample, we are able to resolve both the incoming and outgoing resonance in the G peak intensity evolution as a function of excitation energy, a prominent manifestation of the bright exciton serving as the intermediate state in the Raman process. For a sample with twist angle 8.6°, we report a weakly temperature dependent resonance broadening $γ$ ${\approx}$ 0.07 eV. In the limit of small inhomogeneous broadening, the observed $γ$ places a lower bound for the bright exciton scattering lifetime at 10 fs in the presence of charges and excitons excited by the light pulse for Raman measurement, limited by the rapid exciton-exciton and exciton-charge scattering in graphene.
description: 9 pages, 3 figures, 2 supplemental figures, appearing in Applied Physics Letters
Observation of a short-lived pattern in the solar chromosphere
Creators: name: Wöger, F.
name: Wedemeyer-Böhm, S.
name: Schmidt, W.
name: von der Lühe, O.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: In this work we investigate the dynamic behavior of inter-network regions of the solar chromosphere. We observed the chromosphere of the quiet Sun using a narrow-band Lyot filter centered at the Ca II K 2v emission peak with a bandpass of 0.3A. We achieved a spatial resolution of on average 0.7" at a cadence of 10s. In the inter-network we find a mesh-like pattern that features bright grains at the vertices. The pattern has a typical spatial scale of 1.95" and a mean evolution time scale of 53s with a standard deviation of 10s. A comparison of our results with a recent three-dimensional radiation hydrodynamical model implies that the observed pattern is of chromospheric origin. The measured time scales are not compatible with those of reversed granulation in the photosphere although the appearance is similar. A direct comparison between network and inter-network structure shows that their typical time scales differ by at least a factor of two. The existence of a rapidly evolving small-scale pattern in the inter-network regions supports the picture of the lower chromosphere as a highly dynamical and intermittent phenomenon.
description: Letter A&A 4 pages 5 figures
Deep learning estimation of complex reverberant wave fields by a programmable metasurface
Creators: name: Frazier, Benjamin W.
name: Antonsen, Thomas M.
name: Anlage, Steven M.
name: Ott, Edward
Publisher: name: arXiv
Year: 2021
Subjects: subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: Electromagnetic environments are becoming increasingly complex and congested, creating a growing challenge for systems that rely on electromagnetic waves for communication, sensing, or imaging, particularly in reverberating environments. The use of programmable metasurfaces provides a potential means of directing waves to optimize wireless channels on-demand, ensuring reliable operation and protecting sensitive electronic components. Here we introduce a technique that combines a deep learning network with a binary programmable metasurface to shape waves in complex reverberant electromagnetic environments, in particular ones where there is no direct line of sight. We applied this technique for wavefront reconstruction and control, and accurately determined metasurface configurations based on measured system scattering responses in a chaotic microwave cavity. The state of the metasurface that realizes desired electromagnetic wave field distribution properties was successfully determined even in cases previously unseen by the deep learning algorithm. Our technique is enabled by the reverberant nature of the cavity, and is effective with a metasurface that covers only $\sim$1.5\% of the total cavity surface area.
Integer-only Zero-shot Quantization for Efficient Speech Recognition
Creators: name: Kim, Sehoon
name: Gholami, Amir
name: Yao, Zhewei
name: Lee, Nicholas
name: Wang, Patrick
name: Nrusimha, Aniruddha
name: Zhai, Bohan
name: Gao, Tianren
name: Mahoney, Michael W.
name: Keutzer, Kurt
Publisher: name: arXiv
Year: 2021
Subjects: subject: Audio and Speech Processing (eess.AS)
subject: Computation and Language (cs.CL)
subject: Sound (cs.SD)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: End-to-end neural network models achieve improved performance on various automatic speech recognition (ASR) tasks. However, these models perform poorly on edge hardware due to large memory and computation requirements. While quantizing model weights and/or activations to low-precision can be a promising solution, previous research on quantizing ASR models is limited. In particular, the previous approaches use floating-point arithmetic during inference and thus they cannot fully exploit efficient integer processing units. Moreover, they require training and/or validation data during quantization, which may not be available due to security or privacy concerns. To address these limitations, we propose an integer-only, zero-shot quantization scheme for ASR models. In particular, we generate synthetic data whose runtime statistics resemble the real data, and we use it to calibrate models during quantization. We apply our method to quantize QuartzNet, Jasper, and Conformer and show negligible WER degradation as compared to the full-precision baseline models, even without using any data. Moreover, we achieve up to 2.35x speedup on a T4 GPU and 4x compression rate, with a modest WER degradation of <1% with INT8 quantization.
Experimental continuous-variable entanglement from a phase-difference-locked optical parametric oscillator
Creators: name: Jing, Jietai
name: Feng, Sheng
name: Bloomer, Russell
name: Pfister, Olivier
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We observed continuous-variable entanglement between the bright beams emitted above threshold by an ultrastable optical parametric oscillator, classically phase-locked at a frequency difference of 161.8273240(5) MHz. The amplitude-difference squeezing is -3 dB and the phase-sum one is -1.35 dB. Besides proving entanglement in a new physical system, the phase-locked OPO, such unprecedented frequency-difference stability paves the way for transferring entanglement between different optical frequencies and densely implementing continuous-variable quantum information in the frequency domain.
description: 4 pages, 4 figures, submitted for publication
Loschmidt echoes in two-body random matrix ensembles
Creators: name: Pizorn, Iztok
name: Prosen, Tomaz
name: Seligman, Thomas H.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Fidelity decay is studied for quantum many-body systems with a dominant independent particle Hamiltonian resulting e.g. from a mean field theory with a weak two-body interaction. The diagonal terms of the interaction are included in the unperturbed Hamiltonian, while the off-diagonal terms constitute the perturbation that distorts the echo. We give the linear response solution for this problem in a random matrix framework. While the ensemble average shows no surprising behavior, we find that the typical ensemble member as represented by the median displays a very slow fidelity decay known as ``freeze''. Numerical calculations confirm this result and show, that the ground state even on average displays the freeze. This may contribute to explanation of the ``unreasonable'' success of mean field theories.
description: 9 pages, 5 figures (6 eps files), RevTex; v2: slight modifications following referees' suggestions
Noise-resistant Landau-Zener sweeps from geometrical curves
Creators: name: Zhuang, Fei
name: Zeng, Junkai
name: Economou, Sophia E.
name: Barnes, Edwin
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Landau-Zener physics is often exploited to generate quantum logic gates and to perform state initialization and readout. The quality of these operations can be degraded by noise fluctuations in the energy gap at the avoided crossing. We leverage a recently discovered correspondence between qubit evolution and space curves in three dimensions to design noise-robust Landau-Zener sweeps through an avoided crossing. In the case where the avoided crossing is purely noise-induced, we prove that operations based on monotonic sweeps cannot be robust to noise. Hence, we design families of phase gates based on non-monotonic drives that are error-robust up to second order. In the general case where there is an avoided crossing even in the absence of noise, we present a general technique for designing robust driving protocols that takes advantage of a relationship between the Landau-Zener problem and space curves of constant torsion.
description: 13 pages, 11 figures; v3: final published version
Alerta Sanitaria: Tratamiento fraudulento para el cáncer: Oncovix/ Oncocit / Oncocel USA
Creators: name: Centro de Información de Medicamentos de la Universidad Nacional
name: Aponte-Gonzalez, Johanna
name: Rodriguez, Karla Geraldine
Publisher: name: Zenodo
Year: 2024

description: El producto ONCOVIX está siendo comercializado en Latinoamérica como una “terapia emergente” frente al cáncer. Sin embargo, esta no cuenta con el soporte técnico y legal para su distribución y por lo tanto se considera fraudulento. Aquí se presenta la alerta sanitaria.
REA sobre Covid-19
Creators: name: Dos Santos Souza Da Silva, Lucas
name: Da Silva Prudencio, Dayanne
Publisher: name: Cadernos BAD
Year: 2022

description: Trata-se de mapeamento a produção de recursos educacionais abertos (REA) sobre Covid-19 desenvolvida por bibliotecários e bibliotecas universitárias brasileiras. Os recursos mapeados foram indexados e armazenados no Repositório REA COVID. Trata-se de pesquisa de caráter bibliográfico (quanto aos meios) e também de campo (quanto à fonte de coleta dos dados), exploratória- descritiva (quanto ao seu objetivo), e, do ponto de vista da análise dos dados e demonstração dos resultados com abordagem qualitativa. Utilizou questionário estruturado. Os resultados parciais evidenciam que durante a pandemia de Covid-19 os bibliotecários engajaram-se em iniciativas de promoção de pesquisa e recursos educacionais abertos sobre o novo coronavírus e que tem participado como coprodutores da comunidade de conhecimento na área da saúde, objetivando contribuir com o progresso científico e com o atendimento das demandas relacionadas à saúde pública.
description: Cadernos BAD, N.º 1-2 (2021): Atas da 12ª Conferência Luso-Brasileira de Ciência Aberta (ConfOA)
Pressure on charged domain walls and additional imprint mechanism in ferroelectrics
Creators: name: Mokry, P.
name: Tagantsev, A. K.
name: Fousek, J.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The impact of free charges on the local pressure on a charged ferroelectric domain wall produced by an electric field has been analyzed. A general formula for the local pressure on a charged domain wall is derived considering full or partial compensation of bound polarization charges by free charges. It is shown that the compensation can lead to a very strong reduction of the pressure imposed on the wall from the electric field. In some cases this pressure can be governed by small nonlinear effects. It is concluded that the free charge compensation of bound polarization charges can lead to substantial reduction of the domain wall mobility even in the case when the mobility of free charge carriers is high. This mobility reduction gives rise to an additional imprint mechanism which may play essential role in switching properties of ferroelectric materials. The effect of the pressure reduction on the compensated charged domain walls is illustrated for the case of 180-degree ferroelectric domain walls and of 90-degree ferroelectric domain walls with the head-to-head configuration of the spontaneous polarization vectors.
description: subm. to PRB. This verion is extended by appendix
Characterization of the variability in the O+B eclipsing binary HD 165246
Creators: name: Johnston, Cole
name: Aimar, Nicolas
name: Abdul-Masih, Michael
name: Bowman, Dominic. M.
name: White, Tim R.
name: Hawcroft, Calum
name: Sana, Hugues
name: Sekaran, Sanjay
name: Dsilva, Karan
name: Tkachenko, Andrew
name: Aerts, Conny
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: O-stars are known to experience a wide range of variability mechanisms originating at both their surface and their near-core regions. Characterization and understanding of this variability and its potential causes are integral for evolutionary calculations. We use a new extensive high-resolution spectroscopic data set to characterize the variability observed in both the spectroscopic and space-based photometric observations of the O+B eclipsing binary HD~165246. We present an updated atmospheric and binary solution for the primary component, involving a high level of microturbulence ($13_{-1.3}^{+1.0}\,$km\,s$^{-1}$) and a mass of $M_1=23.7_{-1.4}^{+1.1}$~M$_{\odot}$, placing it in a sparsely explored region of the Hertzsprung-Russell diagram. Furthermore, we deduce a rotational frequency of $0.690\pm 0.003\,$d$^{-1}$ from the combined photometric and line-profile variability, implying that the primary rotates at 40\% of its critical Keplerian rotation rate. We discuss the potential explanations for the overall variability observed in this massive binary, and discuss its evolutionary context.
description: Accepted for publication in Monthly Notices of the Royal Astronomical Society, 14 pages, 10 figures, 6 tables, 1 appendix (4 additional figures)
Metastable Helium Reveals an Extended Atmosphere for the Gas Giant HAT-P-18b
Creators: name: Paragas, Kimberly
name: Vissapragada, Shreyas
name: Knutson, Heather A.
name: Oklopčić, Antonija
name: Chachan, Yayaati
name: Greklek-McKeon, Michael
name: Dai, Fei
name: Tinyanont, Samaporn
name: Vasisht, Gautam
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: The metastable helium line at 1083 nm can be used to probe the extended upper atmospheres of close-in exoplanets and thus provide insight into their atmospheric mass loss, which is likely to be significant in sculpting their population. We used an ultranarrowband filter centered on this line to observe two transits of the low-density gas giant HAT-P-18b, using the 200" Hale Telescope at Palomar Observatory, and report the detection of its extended upper atmosphere. We constrain the excess absorption to be $0.46\pm0.12\%$ in our 0.635 nm bandpass, exceeding the transit depth from the Transiting Exoplanet Survey Satellite (TESS) by $3.9σ$. If we fit this signal with a 1D Parker wind model, we find that it corresponds to an atmospheric mass loss rate between $8.3^{+2.8}_{-1.9} \times 10^{-5}$ $M_\mathrm{J}$/Gyr and $2.63^{+0.46}_{-0.64} \times 10^{-3}$ $M_\mathrm{J}$/Gyr for thermosphere temperatures ranging from 4000 K to 13000 K, respectively. With a J magnitude of 10.8, this is the faintest system for which such a measurement has been made to date, demonstrating the effectiveness of this approach for surveying mass loss on a diverse sample of close-in gas giant planets.
description: accepted for publication in ApJL
Near-Infrared Coronal Line Observations of Dwarf Galaxies hosting AGN-driven Outflows
Creators: name: Bohn, Thomas
name: Canalizo, Gabriela
name: Veilleux, Sylvain
name: Liu, Weizhe
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We have obtained Keck NIR spectroscopy of a sample of nine M$_\star$ $
description: 31 pages, 18 Figures, 13 Tables. Accepted by ApJ
Εμπορία από απόσταση αγαθών και υπηρεσιών και συμβάσεις εκτός εμπορικού καταστήματος
Creators: name: Κουβελά, Ευθυμία
Publisher: name: Aristotle University of Thessaloniki
Year: 2020
Subjects: Συμβάσεις
Εξ αποστάσεως
Εκτός εμπορικού καταστήματος
Contracts
Distance
Off- premises

description: Σκοπός της διατριβής ήταν η μελέτη του θέματος της εμπορίας αγαθών και υπηρεσιών από απόσταση καθώς και του θέματος των συμβάσεων εκτός εμπορικού καταστήματος. Εξετάσαμε τις έννοιες του «καταναλωτή» και του «προμηθευτή», δηλαδή των συμβαλλόμενων μερών, έννοιες θεμελιώδεις, καθώς ορίζουν το υποκειμενικό πεδίο των εν λόγω συμβάσεων. Στη συνέχεια παρουσιάσαμε αναλυτικά το πεδίο εφαρμογής των ανωτέρω συμβάσεων, τις εξαιρέσεις από το πεδίο εφαρμογής, ορισμένες ειδικότερες περιπτώσεις αυτών, καθώς και τον τρόπο κατάρτισής τους. Ακόμη αναφερθήκαμε αναλυτικά στις υποχρεώσεις ενημέρωσης του καταναλωτή από τον προμηθευτή, με γνώμονα την προστασία του πρώτου. Τις διακρίναμε στις υποχρεώσεις ενημέρωσης στο προσυμβατικό στάδιο και στις υποχρεώσεις ενημέρωσης στο συμβατικό στάδιο, ενώ εκθέσαμε και τις συνέπειες παράβασης αυτών. Ένα άλλο θέμα που θίξαμε ήταν το δικαίωμα υπαναχώρησης που έχει ο καταναλωτής και παρουσιάσαμε τις έννομες συνέπειες της υπαναχώρησης (υποχρεώσεις καταναλωτή και προμηθευτή), αλλά και τις εξαιρέσεις από το δικαίωμα αυτό. Τέλος, κάναμε μία σύντομη αναφορά στη διεθνή δικαιοδοσία και το εφαρμοστέο δίκαιο στις καταναλωτικές διαφορές, ενώ επιχειρήσαμε και μία αποτίμηση των νέων διατάξεων για την προστασία του καταναλωτή, οι οποίες επέφεραν αξιοσημείωτες αλλαγές σε πολλές διατάξεις του ισχύοντος νόμου.
description: The aim of the present thesis was the study of the distance commerce of goods and off- premises contracts. We examined the meaning of "consumer" and "supplier", namely the parties involved, fundamental meanings, as they define the subjective scope of these contracts. Then we presented in detail the scope of application of the afore mentioned contracts, the exceptions from the scope, some specific cases of these, as well as the way of their preparation. Furthermore, we analyzed the obligations of informing the consumer by the supplier, with a view to protect the consumer. We distinguished them between the information obligations at the pre-contractual stage and the information obligations in the conventional stage, while we also presented the consequences of their violation. We also examined the right of withdrawal of the consumer, we presented the legal consequences of withdrawing (obligations of the consumer and the supplier), and the exceptions to this right. Finally, we made a brief reference to international jurisdiction and applicable law in consumer disputes, while we also attempted an assessment of the new provisions on consumer protection, which brought about significant changes in many provisions on the current law.
Grammatical elicitation: Verb paradigms
Creators: name: Palacio, Frank
name: Robertson, Allegra
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2022
Subjects: subject: cab

description: Includes grammaticality judgements and elicited dialogue in a story about hüdütü, mostly focused on stative and active verbs in future contexts. Verbs are elicited with positive and negative polarity, and in declarative and interrogative moods.
Landscaping CP-violating BSM scenarios
Creators: name: Bakshi, Supratim Das
name: Chakrabortty, Joydeep
name: Englert, Christoph
name: Spannowsky, Michael
name: Stylianou, Panagiotis
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We consider a wide range of UV scenarios with the aim of informing searches for CP violation at the TeV scale using effective field theory techniques. We demonstrate that broad theoretical assumptions about the nature of UV dynamics responsible for CP violation map out a small subset of relevant operators at the TeV scale. Concretely, this will allow us to reduce the number of free parameters that need to be considered in experimental investigations, thus enhancing analyses' sensitivities. In parallel, reflecting the UV dynamics' Wilson coefficient hierarchy will enable a streamlined theoretical interpretation of such analyses in the future. We demonstrate a minimal approach to analysing CP violation in this context using a Monte Carlo study of a combination of weak boson fusion Higgs and electroweak diboson production, which provide complementary information on the relevant EFT operators.
description: 22 pages, 6 figures, 1 table; v2 accepted by NPB, 7 figures, 3 tables
Οι άδειες των κρατουμένων
Creators: name: Γκαμάγκα, Αικατερίνη Κωνσταντίνου
Publisher: name: Aristotle University of Thessaloniki
Year: 2020
Subjects: Άδειες
Κρατούμενοι
Σωφρονιστική
Prison leave
Prisoners
Penitentiary

description: Η παρούσα εργασία ασχολείται με τη μελέτη του ελληνικού νομοθετικού πλαισίου των προσωρινών αδειών εξόδου των ενήλικων κρατουμένων στην Ελλάδα από τα καταστήματα κράτησης. Εκκινώντας από την ιστορική αναδρομή και την ένταξη των αδειών στο ελληνικό σωφρονιστικό σύστημα, στη συνέχεια μελετώνται οι δικαιοπολιτικοί λόγοι ύπαρξης του θεσμού, η νομική τους φύση και τα τυχόν μειονεκτήματα τους. Επιπροσθέτως παρατίθενται τα είδη των αδειών, ο σκοπός, η διάρκεια και οι προϋποθέσεις χορήγησης τους, ενώ εξετάζεται και σε ποιο βαθμό υλοποιούνται στην πράξη οι νομοθετικές προβλέψεις. Τέλος, μέσα από την παρουσίαση ερευνητικών δεδομένων για την εφαρμογή του θεσμού, καθώς και πορισμάτων φορέων για την εφαρμογή τους και πιο πρόσφατων δεδομένων, όπως αυτά αποτυπώθηκαν στον ηλεκτρονικό τύπο, επιχειρείται μία συνολική αποτίμηση του θεσμού.
description: The present thesis scrutinizes the greek legal framework of adult prisoners temporary releases from prison. The study begins with a historical overview, starting with the establishment of the institution mentioned above in the greek correctional system, followed by an inspection of the policy reasons behind such a measure, its legal nature as well as any potential disadvantages. Furthermore, the classification of prisoner leaves is presented alongside with the purpose of each type, its duration and the conditions for granting it, while it is also examined to what extent the legal implementation of the aforementioned measure is enforced. Finally yet importantly, by featuring research data on the implementation of the institution, the findings of bodies, and, lastly, more recent data captured via internet sources, this study attempts to carry out an overall evaluation of the institution of prisoner leaves.
A characterization of the product of the rational numbers and complete Erdős space
Creators: name: Hernández-Gutiérrez, Rodrigo
name: Zaragoza, Alfredo
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Topology (math.GN)
subject: FOS: Mathematics
subject: 54F65, 54F50, 54A10, 54B20, 54H05

description: Erdős space $\mathfrak{E}$ and complete Erdős space $\mathfrak{E}_c$ have been previously shown to have topological characterizations. In this paper, we provide a topological characterization of the topological space $\mathbb{Q}\times\mathfrak{E}_c$, where $\mathbb{Q}$ is the space of rational numbers. As a corollary, we show that the Vietoris hyperspace of finite sets $\mathcal{F}(\mathfrak{E}_c)$ is homeomorphic to $\mathbb{Q}\times\mathfrak{E}_c$. We also characterize the factors of $\mathbb{Q}\times\mathfrak{E}_c$. An interesting open question that is left open is whether $σ{\mathfrak{E}_c}^ω$, the $σ$-product of countably many copies of $\mathfrak{E}_c$, is homeomorphic to $\mathbb{Q}\times\mathfrak{E}_c$.
H-alpha Observations of a Large Sample of Galaxies at z~2: Implications for Star Formation in High Redshift Galaxies
Creators: name: Erb, Dawn K.
name: Steidel, Charles C.
name: Shapley, Alice E.
name: Pettini, Max
name: Reddy, Naveen A.
name: Adelberger, Kurt L.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Using H-alpha spectra of 114 rest-frame UV-selected galaxies at z~2, we compare inferred star formation rates (SFRs) with those determined from the UV continuum luminosity. After correcting for extinction using standard techniques based on the UV continuum slope, we find excellent agreement between the indicators, with = 31 Msun/yr and = 29 Msun/yr. The agreement between the indicators suggests that the UV luminosity is attenuated by an typical factor of ~4.5 (with a range from no attenuation to a factor of ~100 for the most obscured object in the sample), in good agreement with estimates of obscuration from X-ray, radio and mid-IR data. The H-alpha luminosity is attenuated by a factor of ~1.7 on average, and the maximum H-alpha attenuation is a factor of ~5. In agreement with X-ray and mid-IR studies, we find that the SFR increases with increasing stellar mass and at brighter K magnitudes, to ~ 60 Msun/yr for galaxies with K<20; the correlation between K magnitude and SFR is much stronger than the correlation between stellar mass and SFR. All galaxies in the sample have SFRs per unit area Sigma_SFR in the range observed in local starbursts. We compare the instantaneous SFRs and the past average SFRs as inferred from the ages and stellar masses, finding that for most of the sample, the current SFR is an adequate representation of the past average. There is some evidence that the most massive galaxies (M_star >10^11 Msun) have had higher SFRs in the past.
description: 14 pages, 7 figures, 1 table. Accepted for publication in ApJ
Μελέτη ευαισθησίας της επίδρασης των μεταβολών των συγκεντρώσεων του μεθανίου (CH4) και των ενώσεων που καταστρέφουν το όζον (ODS), στις συγκεντρώσεις του όζοντος Ο3 στην ατμόσφαιρα της προβιομηχανικής περιόδου
Creators: name: Καραγιάννης, Ιωάννης Κωνσταντίνου
Publisher: name: Aristotle University of Thessaloniki
Year: 2020
Subjects: Κλιματικός εξαναγκασμός
Μεθάνιο και όζον
Υδρατμοί στη στρατόσφαιρα και μεθάνιο
CMIP6
Methane and water vapor in stratosphere
Methane and ozone

description: Στην παρούσα διπλωματική εργασία έγινε διερεύνηση της ευαισθησίας που παρουσιάζει το κλιματικό σύστημα της Γής , και ειδικότερα της ατμόσφαιρας της, όταν διαταράξουμε τη σύστασή της με τη μορφή δύο κλιματικών εξαναγκασμών . Ο πρώτος μετέβαλε τις συγκεντρώσεις του μεθανίου CH4 και ο δεύτερος τις συγκεντρώσεις των ODS (Ozone Depleting Substances) ,ώστε να προσομοιάσουν την ατμόσφαιρα του 2014 σε συγκεντρώσεις των αντίστοιχων ενώσεων. Με τη βοήθεια των αποτελεσμάτων (data) αυτών των κλιματικών εξαναγκασμών που παίρνουμε από τις προσομοιώσεις του AerChemMIP (CMIP6 Project) υπολογίζουμε και απεικονίζουμε γραφικά τις διαφορές και εποχικές διακυμάνσεις που προκύπτουν στις συγκεντρώσεις του όζοντος (O3) καθώς και άλλων παραμέτρων όπως της ειδικής υγρασίας ώστε να κατανοήσουμε τις αλλαγές στη χημική σύνθεση της ατμόσφαιρας μεταξύ παρελθοντικών και μελλοντικών καταστάσεων .
description: In the present dissertation, the sensitivity of the Earth's climate system, particularly its atmosphere, was investigated while disturbing its composition in the form of two climatic compulsions. The former changed the concentrations of methane CH4 and the latter the concentrations of ODS (Ozone Depleting Substances), to simulate the atmosphere of 2014 in concentrations of the corresponding compounds. With the help of the results of these climate compulsions (data) that we get from the simulations of AerChemMIP (CMIP6 Project) we calculate and graphically depict the differences and seasonal variations that occur in the concentrations of ozone (O3) as well as other parameters, such as specific humidity, in order to understand the changes in the chemical composition of the atmosphere between past and future cases.
Repository Supplementary Material | Review Article: Uncovering the Applications, Developments, and Future Research Directions of the Open-Source Energy Modelling System (OSeMOSYS): A Systematic Literature Review
Creators: name: Plazas-Niño, Fernando
name: Tan, Naomi
name: Foster, Vivien
name: Howells, Mark
name: Quirós-Tortós, Jairo
Publisher: name: Zenodo
Year: 2024

description: Supplementary material about the review article titled Uncovering the Applications, Developments, and Future Research Directions of the Open-Source Energy Modelling System (OSeMOSYS): A Systematic Literature Review

This material has been produced under the Climate Compatible Growth (CCG) programme, which brings together leading research organizations and is led out of the STEER centre, Loughborough University. CCG is funded by UK aid from the UK government. However, the views expressed herein do not necessarily reflect the UK government's official policies.