cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Prototipagem da paisagem - Relevo da APA da Baleia Franca
Creators: name: Quoos, João Henrique
name: Figueiró, Adriano Severo
Publisher: name: figshare
Year: 2023
Subjects: Conservation and biodiversity
Ecology not elsewhere classified
Oceanography not elsewhere classified

description: Maquete de relevo em impressão 3D ou usinagem CNC da Área de Proteção Ambiental da Baleia Franca.
Post-Newtonian effects in N-body dynamics: Relativistic precession and conserved quantities in hierarchical triple systems
Creators: name: Will, Clifford M.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Conventional approaches to incorporating general relativistic effects into the dynamics of N-body systems containing central black holes, or of hierarchical triple systems with a relativistic inner binary, may not be adequate when the goal is to study the evolution of the system over a timescale related to relativistic secular effects, such as the precession of the pericenter. For such problems, it may necessary to include post-Newtonian "cross terms" in the equations of motion in order to capture relativistic effects consistently over the long timescales. Cross terms are post-Newtonian (PN) terms that explicitly couple the two-body relativistic perturbations with the Newtonian perturbations due to other bodies in the system. In this paper, we show that the total energy and the normal component of total angular momentum of a hierarchical triple system is manifestly conserved to Newtonian order over the relativistic pericenter precession timescale of the inner binary if and only if PN cross-term effects in the equations of motion are taken carefully into account.
description: 10 pages, submitted to Classical and Quantum Gravity for a focus issue on Galactic Centers
Maquete de Relevo da APA da Baleia Franca
Creators: name: Quoos, João Henrique
name: Figueiró, Adriano Severo
Publisher: name: figshare
Year: 2023
Subjects: Conservation and biodiversity
Ecology not elsewhere classified
Oceanography not elsewhere classified

description: Maquete de relevo em impressão 3D ou usinagem CNC da Área de Proteção Ambiental da Baleia Franca.
Análisis de ondas internas solitarias usando imágenes de radar de apertura sintética del Golfo de Tehuantepec /
Creators: name: Esquivel Traba, Bernardo
Publisher: name: Universidad Autónoma de Baja California.
Year: 2022
Subjects: subject: Olejaje Imágenes SAR||Olejaje Imágenes SAR Tehuantepec, Golfo de||Oceanografía costera||Sensores remotos||Oceanografía costera Maestría||Tesis
subject: GC211.2 E86 2008

description: En imágenes de satélite de radar de apertura sintética (SAR y ASAR, por sus siglas en ingles) del Golfo de Tehuantepec (GT), frecuentemente se observan señales de ondas internas solitarias (OIS), la mayoría se encuentra sobre la plataforma continental propagándose hacia la costa en distintas direcciones.
The stories we share: An Indigenous experience in education
Creators: Kreisberg Ulrich, Jethro
Publisher: name: University of Alberta Library
Year: 2022

Indigenous people of Turtle Island continue to struggle with colonialism ever since first contact with Europeans in 1492. The lasting effect of colonialization provides Indigenous students with many obstacles and challenges in our Canadian education system. In particular, the dark legacy of Residential Schools and the Sixties Scoop has caused irreparable damage to the survivors of those assimilative systems and their children. It is because of the Truth and Reconciliation Commission and the 94 Calls to Action that school administrators and teachers are becoming more aware of the systemic racism that exists in education. This theoretical and reflexive research will engage in a deep exploration of my story, as a Plains Cree/ nehiyaw Sixties Scoop Survivor and Catholic school teacher, in the context of the available literature around Indigeneity and Canadian education. I investigate and unpack the mechanisms of systemic racism in our education system and how it is holding back Indigenous families, students, and teachers from fully participating in an education system that honours all Ways of Knowing and Being. By employing an ethic of care and critique, we can begin the healing process for both Indigenous families and educators to rebuild trust in our education system. Using academic literature and my own life story as an Indigenous student, teacher, and now graduate student, I sought to learn from my own experiences. In keeping with the teachings of the Medicine Wheel, I employed a holistic, inclusive approach under the guidance of an Elder and Knowledge Keeper throughout the process.
PENGARUH SOSIAL-POLITIK DAN INTELEKTUAL DALAM PEMBENTUKAN NEO-SUFISME IMAM AL-GHAZALI
Creators: name: Arafah Pramasto
Publisher: name: figshare
Year: 2020
Subjects: subject: 220403 Islamic Studies
subject: FOS: Philosophy, ethics and religion
subject: 220407 Studies in Religious Traditions (excl. Eastern, Jewish, Christian and Islamic Traditions)
subject: 210310 Middle Eastern and African History
subject: FOS: History and archaeology
subject: 220315 Philosophy of Religion
subject: 220499 Religion and Religious Studies not elsewhere classified

description: Tasawuf atau yang dikenal juga sebagai ‘Sufisme’ merupakan istilah yang baru dikenal pada abad ke-III hijriah. Sufisme kerap dianggap sebagai suatu bentuk kehidupan yang rendah dalam masyarakat karena dituduh mengajarkan asketisme ekstrim. Kesan itu lebih disebabkan oleh dua faktor utama sejarah Islam yang berpengaruh pada Sufisme. Pertama, munculnya pemerintahan despotik sejak zaman berdirinya Umayyah. Kedua, puncak kemajuan fisik dan intelektual era Abbasiyah. Sufisme yang menjadi simbol perlawanan pada penguasa dan hedonisme keduniawian lalu berubah menjadi semakin melembaga dan diindikasi terpengaruh oleh gagasan-gagasan kontroversial. Sebagai contohnya ialah Tasawuf dianggap sebagai bid’ah dan sesat karena dikaitkan dengan eksistensi tokoh Al-Hallaj dengan gagasan Wahdat Al-Wujudnya. Di masa kemajuan intelektual Islam itu, Imam Al-Ghazali, cendekiawan yang menguasai berbagai bidang ilmu, selanjutnya memilih menjadi seorang Sufi. Al-Ghazali yang kini karya-karyanya banyak beredar di Indonesia, berhasil menggagaskan sintesis antara mistisisme dan syariat, yang kemudian oleh seorang pemikir Islam modern bernama Fazlur Rahman diidentifikasi sebagai “Neo-Sufisme.”
A narrative inquiry into the experiences of elementary school-based counsellors amidst a pandemic
Creators: Lastiwka, Athanasia Nancy
Publisher: name: University of Alberta Library
Year: 2022

According to Youth Mental Health Canada, approximately 1.2 million Canadian children and adolescents are experiencing mental health issues. Yet less than 20% of Canadian students will receive or have access to adequate mental health care and treatment for their illness. As the demand for mental health support continues to grow amidst a pandemic, schools will be assigned the daunting task of addressing mental health issues with students. With the overwhelming demand for services, school-based counsellors will be stretched, exhausted and at risk for burnout. This narrative inquiry aims to attend to the experiences of school-based counsellors amidst a pandemic as they strive to support the mental health needs of children and families in schools. As a school-based counsellor, I narratively inquire into my experiences while also attending to the experiences of two other school-based counsellor participants. This research offers insight into how administrators, policymakers, school districts, communities, and governments can better support school-based counsellors in schools, particularly during a pandemic. By attending to the lived experiences of school-based counsellors, this, in turn, supports students, families, staff, and communities who rely on school-based counsellors as essential front-line professionals.
Reconfigurable anisotropy and functional transformations with VO$_{2}$-based metamaterial electric circuits
Creators: name: Savo, Salvatore
name: Zhou, You
name: Castaldi, Giuseppe
name: Moccia, Massimo
name: Galdi, Vincenzo
name: Ramanathan, Shriram
name: Sato, Yuki
Publisher: name: arXiv
Year: 2014
Subjects: subject: Optics (physics.optics)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We demonstrate an innovative multifunctional artificial material that combines exotic metamaterial properties and the environmentally responsive nature of phase change media. The tunable metamaterial is designed with the aid of two interwoven coordinate-transformation equations and implemented with a network of thin film resistors and vanadium dioxide ($VO_{2}$). The strong temperature dependence of $VO_{2}$ electrical conductivity results in a relevant modification of the resistor network behavior, and we provide experimental evidence for a reconfigurable metamaterial electric circuit (MMEC) that not only mimics a continuous medium but is also capable of responding to thermal stimulation through dynamic variation of its spatial anisotropy. Upon external temperature change the overall effective functionality of the material switches between a "truncated-cloak" and "concentrator" for electric currents. Possible applications may include adaptive matching resistor networks, multifunctional electronic devices, and equivalent artificial materials in the magnetic domain. Additionally, the proposed technology could also be relevant for thermal management of integrated circuits
Coarse-grained Modeling of DNA Curvature
Creators: name: Freeman, Gordon S.
name: Hinckley, Daniel M.
name: Lequieu, Joshua P.
name: Whitmer, Jonathan K.
name: de Pablo, Juan J.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Biological Physics (physics.bio-ph)
subject: Chemical Physics (physics.chem-ph)
subject: Biomolecules (q-bio.BM)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: Modeling of DNA-protein interactions is a complex process involving many important time and length scales. This can be facilitated through the use of coarse-grained models which reduce the number of degrees of freedom and allow efficient exploration of binding configurations. It is known that the local structure of DNA can significantly affect its protein-binding properties (i.e. intrinsic curvature in DNA-histone complexes). In a step towards comprehensive DNA-protein modeling, we expand the 3SPN.2 coarse-grained model to include intrinsic shape, and validate the refined model against experimental data including melting temperature, local flexibility, persistence length, and minor groove width profile.
description: 9 pages, 6 figures
Presentation for the workshop "An open science taster"
Creators: name: Sliwinski, Edward
name: Flynn, Katherine
name: Hristozova, Nevena
name: Gil, Alba
name: Mayor, Luis
name: Ciolacu, Luminita
Publisher: name: Zenodo
Year: 2021
Subjects: Open science, open repository, open publication, education, training, open data, FAIR data

description: Powerpoint support for an introductory workshop on Open Science, with hands-on activities. This workshop was developed in the context of FNS-Cloud, a project funded by European Union’s Horizon 2020 Research and Innovation programme (Grant Agreement No. 863059 – www.fns-cloud.eu).
Propuesta de manejo para el control poblacional de la cotorra Argentina (Myiopsitta monachus) con base en su ecología espacial en la península de Baja California, México
Creators: name: Saucedo Velázquez, Diana Jazmín
Publisher: name: Universidad Autónoma de Baja California.
Year: 2022
Subjects: subject: Ciencias||Tesis y disertaciones académicas||Myiopsitta monachus
subject: SF473.M65 S38 2022

description: La cotorra argentina (Myiopsitta monachus) es un ave perteneciente a la familia Psitacidae con distribución natural en países de Sudamérica tales como Paraguay, Argentina, Uruguay, Bolivia y Brasil, y ahora como invasora exótica en Europa occidental y Norteamérica.
Synchronization of nearly-identical dynamical systems. I Size instability
Creators: name: Acharyya, Suman
name: Amritkar, R. E.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: We study the generalized synchronization and its stability using master stability function (MSF), in a network of coupled nearly identical dynamical systems. We extend the MSF approach for the case of degenerate eigenvalues of the coupling matrix. Using the MSF we study the size-instability in star and ring networks for coupled nearly identical dynamical systems. In the star network of coupled Rössler systems we show that the critical size beyond which synchronization is unstable, can be increased by having a larger frequency for the central node of the star. For the ring network we show that the critical size is not significantly affected by parameter variations. The results are verified by explicit numerical calculations.
description: 8 pages, 6 figures
In situ imaging of vortices in Bose-Einstein condensates
Creators: name: Wilson, Kali E.
name: Newman, Zachary L.
name: Lowney, Joseph D.
name: Anderson, Brian P.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Laboratory observations of vortex dynamics in Bose-Einstein condensates (BECs) are essential for determination of many aspects of superfluid dynamics in these systems. We present a novel application of dark-field imaging that enables \texttt{\it in situ} detection of two-dimensional vortex distributions in single-component BECs, a step towards real-time measurements of complex two-dimensional vortex dynamics within a single BEC. By rotating a $^{87}$Rb BEC in a magnetic trap, we generate a triangular lattice of vortex cores in the BEC, with core diameters on the order of 400 nm and cores separated by approximately 9 $μ$m. We have experimentally confirmed that the positions of the vortex cores can be determined without the need for ballistic expansion of the BEC.
description: 5 pages, 4 figures
Quasi regular Dirichlet forms and the stochastic quantization problem
Creators: name: Albeverio, Sergio
name: Ma, Zhi Ming
name: Röckner, Michael
Publisher: name: arXiv
Year: 2014
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics

description: After recalling basic features of the theory of symmetric quasi regular Dirichlet forms we show how by applying it to the stochastic quantization equation, with Gaussian space-time noise, one obtains weak solutions in a large invariant set. Subsequently, we discuss non symmetric quasi regular Dirichlet forms and show in particular by two simple examples in infinite dimensions that infinitesimal invariance, does not imply global invariance. We also present a simple example of non-Markov uniqueness in infinite dimensions.
Caracteristicas de las areas de surgencia en las aguas adyacentes a la Bahia de Todos Santos /
Creators: name: Amador Buenrostro, Alberto
Publisher: name: Universidad Autónoma de Baja California.
Year: 2022
Subjects: subject: Surgencias (Oceanografia)Baja California||Oceanologia||Fisica||Tesis
subject: GC228.5 A53 1975

description: Durante los últimos días del mes de abril de 1971, se realizaron 3 cruceros de medición de temperatura superficial en la zona exterior a la Bahía de Todos Santos, desde las islas del mismo nombre hasta Punta Colonett; en estos cruceros fueron evidentes varias zonas de surgencia, principalmente en las islas de Todos Santos, Punta Banda, Punta Santo Tomás, Punta San José y Punta Colonett.
New Method to Measure Proper Motions of Microlensed Sources: Application to Candidate Free-Floating-Planet Event MOA-2011-BLG-262
Creators: name: Skowron, Jan
name: Udalski, Andrzej
name: Szymański, Michał K
name: Kubiak, Marcin
name: Pietrzyński, Grzegorz
name: Soszyński, Igor
name: Poleski, Radosław
name: Ulaczyk, Krzysztof
name: Pietrukowicz, Paweł
name: Kozłowski, Szymon
name: Wyrzykowski, Łukasz
name: Gould, Andrew
Publisher: name: arXiv
Year: 2013
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: We develop a new method to measure source proper motions in microlensing events, which can partially overcome problems due to blending. It takes advantage of the fact that the source position is known precisely from the microlensing event itself. We apply this method to the event MOA-2011-BLG-262, which has a short timescale t_E=3.8 day, a companion mass ratio q=0.0047 and a very high or high lens-source relative proper motion mu_rel=20 mas/yr or 12 mas/yr (for two possible models). These three characteristics imply that the lens could be a brown dwarf or a massive planet with a roughly Earth-mass "moon". The probability of such an interpretation would be greatly increased if it could be shown that the high lens-source relative proper motion was primarily due to the lens rather than the source. Based on the long-term monitoring data of the Galactic bulge from the Optical Gravitational Lensing Experiment (OGLE), we measure the source proper motion that is small, mu_s = (-2.3, -0.9) +- (2.8,2.6) mas/yr in a (North, East) Galactic coordinate frame. These values are then important input into a Bayesian analysis of the event presented in a companion paper by Bennett et al.
description: 3 figures, 14 pages, submitted to ApJ, see also Bennett et al. (http://arxiv.org/abs/1312.3951)
Relevant Feature Selection Model Using Data Mining for Intrusion Detection System
Creators: name: Madbouly, Ayman I.
name: Gody, Amr M.
name: Barakat, Tamer M.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Cryptography and Security (cs.CR)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Network intrusions have become a significant threat in recent years as a result of the increased demand of computer networks for critical systems. Intrusion detection system (IDS) has been widely deployed as a defense measure for computer networks. Features extracted from network traffic can be used as sign to detect anomalies. However with the huge amount of network traffic, collected data contains irrelevant and redundant features that affect the detection rate of the IDS, consumes high amount of system resources, and slowdown the training and testing process of the IDS. In this paper, a new feature selection model is proposed; this model can effectively select the most relevant features for intrusion detection. Our goal is to build a lightweight intrusion detection system by using a reduced features set. Deleting irrelevant and redundant features helps to build a faster training and testing process, to have less resource consumption as well as to maintain high detection rates. The effectiveness and the feasibility of our feature selection model were verified by several experiments on KDD intrusion detection dataset. The experimental results strongly showed that our model is not only able to yield high detection rates but also to speed up the detection process.
description: 12 Pages, 3 figures, 5 tables, Published with "International Journal of Engineering Trends and Technology (IJETT)". arXiv admin note: text overlap with arXiv:1208.5997 by other authors without attribution
Formación de cuadricópteros utilizando un control por backstepping y un acoplamiento dinámico
Creators: name: Rubio Pecasso, Johnny
Publisher: name: Universidad Autónoma de Baja California.
Year: 2022
Subjects: subject: Ingeniería||Tesis y disertaciones académicas||Robots Programación Sincronización
subject: TJ211.35 R822 2022

description: En este trabajo se presenta un controlador utilizando la técnica de backstepping en cuadricópteros con configuración Maestro-Esclavo mediante el uso de un acoplamiento dinámico propuesto.
A Free-Form Lensing Grid Solution for A1689 with New Mutiple Images
Creators: name: Diego, Jose M.
name: Broadhurst, T.
name: Benitez, N.
name: Umetsu, K.
name: Coe, D.
name: Sendra, I.
name: Sereno, M.
name: Izzo, L.
name: Covone, G.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Hubble Space Telescope imaging of the galaxy cluster Abell 1689 has revealed an exceptional number of strongly lensed multiply-imaged galaxies, including high-redshift candidates. Previous studies have used this data to obtain the most detailed dark matter reconstructions of any galaxy cluster to date, resolving substructures ~25 kpc across. We examine Abell 1689 (hereafter, A1689) non-parametrically, combining strongly lensed images and weak distortions from wider field Subaru imaging, and we incorporate member galaxies to improve the lens solution. Strongly lensed galaxies are often locally affected by member galaxies, however, these perturbations cannot be recovered in grid based reconstructions because the lensing information is too sparse to resolve member galaxies. By adding luminosity-scaled member galaxy deflections to our smooth grid we can derive meaningful solutions with sufficient accuracy to permit the identification of our own strongly lensed images, so our model becomes self consistent. We identify 11 new multiply lensed system candidates and clarify previously ambiguous cases, in the deepest optical and NIR data to date from Hubble and Subaru. Our improved spatial resolution brings up new features not seen when the weak and strong lensing effects are used separately, including clumps and filamentary dark matter around the main halo. Our treatment means we can obtain an objective mass ratio between the cluster and galaxy components, for examining the extent of tidal stripping of the luminous member galaxies. We find a typical mass-to-light ratios of M/L_B = 21 inside the r<1 arcminute region that drops to M/L_B = 17 inside the r<40 arcsecond region. Our model independence means we can objectively evaluate the competitiveness of stacking cluster lenses for defining the geometric lensing-distance-redshift relation in a model independent way.
description: 23 pages with 25 figures Replced with MNRAS submitted version. Some figures have been corrected and minor text edits
Ground-state magnetic phase diagram of bow-tie graphene nanoflakes in external magnetic field
Creators: name: Szałowski, Karol
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The magnetic phase diagram of a ground state is studied theoretically for graphene nanoflakes of bow-tie shape and various size in external in-plane magnetic field. The tight-binding Hamiltonian supplemented with Hubbard term is used to model the electronic structure of the systems in question. The existence of the antiferromagnetic phase with magnetic moments localized at the sides of the bow-tie is found for low field and a field-induced spin-flip transition to ferromagnetic state is predicted to occur in charge-undoped structures. For small nanoflake doped with a single charge carrier the low-field phase is ferrimagnetic and a metamagnetic transition to ferromagnetic ordering can be forced by the field. The critical field is found to decrease with increasing size of the nanoflake. The influence of diagonal and off-diagonal disorder on the mentioned magnetic properties is studied. The effect of off-diagonal disorder is found to be more important than this of diagonal disorder, leading to significantly widened distribution of critical fields for disordered population of nanoflakes.
Sister got high scores again! (姐姐又得好成绩)
Creators: name: Bai Xuhao 白绪号
name: Liu Ruizhao 刘瑞兆
Publisher: name: University of Victoria Libraries
Year: 2022
Subjects: subject: Education
valueUri: http://id.worldcat.org/fast/902499
subject: Youth
valueUri: http://id.worldcat.org/fast/1183341
subject: Militia Training
subject: Hu County Peasant Painting

description: Price: 11 fen
Scattering model description of cascaded cavity configurations
Creators: name: Dombi, András
name: Domokos, Peter
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Cascaded optical cavities appear in various quantum information processing schemes in which atomic qubits are sitting in separate cavities interconnected by photons as flying qubits. The usual theoretical description relies on a coupled-mode Hamiltonian approach. Here we investigate the system of cascaded cavities without modal decomposition by using a scattering model approach and determine the validity regime of the coupled-mode models.
Propuesta de modelo de evaluación del observatorio Guadalupe, de la subcuenca Guadalupe, Baja California, México
Creators: name: Campos Villavicencio, Sergio Armando
Publisher: name: Universidad Autónoma de Baja California.
Year: 2022
Subjects: subject: Ciencias||Tesis y disertaciones académicas||Indicadores ambienales
subject: GE160.M6 C35 2022

description: Un Observatorio Ciudadano es un proyecto o espacio que facilita el diálogo, el análisis y la colaboración en algún tema para una revisión sistémica y/o la participación política. En esta tesis se propone un modelo de evaluación para los observatorios participativos socioecológicos de la Red Internacional de Sustentabilidad de Zonas Áridas y se aplica en un caso de estudio, el Observatorio Guadalupe en Baja California. Se identificaron cuatro familias de características de los observatorios ciudadanos y cinco tipos de observatorios. La figura que promueve y diseña un observatorio determina las diferencias en relación al tema que abordan, el tipo, su alcance y funciones. A nivel mundial hay observatorios que tienen nichos geopolíticos y lingüísticos que favorecen el desarrollo de conceptos y múltiples manifestaciones. Se caracterizó el proceso de creación del sitio web del Observatorio Participativo Socioecológico Guadalupe denominado Observatorio Guadalupe. Se identificó que en México el desarrollo de observatorios socio-ambientales cuenta con un área de oportunidad en el sector ya que hay pocos observatorios que trabajan temas afines. Además, se identificó que el Observatorio Guadalupe se vio favorecido por procesos anteriores de participación e investigación en el territorio, normativa que obliga a instancias gubernamentales a integrarse a los procesos, la persistencia de problemas en el tiempo y una actitud favorable de los actores sociales para solucionar los problemas del territorio.
Bifurcation of common levels of first integrals of the Kovalevskaya problem
Creators: name: Kharlamov, Mikhail P.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 70E05, 70E17, 37J15, 37J20

description: The structure of integral manifolds in the Kovalevskaya problem of the motion of a heavy rigid body about a fixed point is considered. An analytic description of a bifurcation set is obtained, and bifurcation diagrams are constructed. The number of two-dimensional tori is indicated for each connected component of the supplement to the bifurcation set in the space of the first integrals constants. The main topological bifurcations of the regular tori are described.
description: LaTex, 5 figures
Scattering of electron vortex beams on a magnetic crystal: towards atomic resolution magnetic measurements
Creators: name: Rusz, Jan
name: Bhowmick, Somnath
name: Eriksson, Mattias
name: Karlsson, Nikolaj
Publisher: name: arXiv
Year: 2014
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Use of electron vortex beams (EVB), that is convergent electron beams carrying an orbital angular momentum (OAM), is a novel development in the field of transmission electron microscopy. They should allow measurement of element-specific magnetic properties of thin crystals using electron magnetic circular dichroism (EMCD)---a phenomenon similar to the x-ray magnetic circular dichroism. Recently it has been shown computationally that EVBs can detect magnetic signal in a scanning mode only at atomic resolution. In this follow-up work we explore in detail the elastic and inelastic scattering properties of EVBs on crystals, as a function of beam diameter, initial OAM, acceleration voltage and beam displacement from an atomic column. We suggest that for a 10 nm layer of bcc iron oriented along (001) zone axis an optimal configuration for a detection of EMCD is an EVB with OAM of $1\hbar$ and a diameter of 1.6 Å, acceleration voltage 200 keV and an annular detector with inner and outer diameters of $G$ and $5G$, respectively, where $\mathbf{G}=(100)$.
description: 13 pages, 12 figures, submitted. arXiv admin note: text overlap with arXiv:1304.5461
Criteria for Natural Hierarchies
Creators: name: de Gouvea, Andre
name: Hernandez, Daniel
name: Tait, Tim M. P.
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: With the discovery of a particle that seems rather consistent with the minimal Standard Model Higgs boson, attention turns to questions of naturalness, fine-tuning, and what they imply for physics beyond the Standard Model and its discovery prospects at run II of the LHC. In this article we revisit the issue of naturalness, discussing some implicit assumptions that underly some of the most common statements, which tend to assign physical significance to certain regularization procedures. Vague arguments concerning fine-tuning can lead to conclusions that are too strong and perhaps not as generic as one would hope. Instead, we explore a more pragmatic definition of the hierarchy problem that does not rely on peeking beyond the murky boundaries of quantum field theory: we investigate the fine-tuning of the electroweak scale associated with thresholds from heavy particles, which is both calculable and dependent on the nature of the would-be ultraviolet completion of the Standard Model. We discuss different manifestations of new high-energy scales that are favored by experimental hints for new physics with an eye toward making use of fine-tuning in order to determine natural regions of the new physics parameter spaces.
description: v2: corrected discussion of gravitational corrections to include an important contribution previously neglected
Quasi-exceptional domains
Creators: name: Eremenko, Alexandre
name: Lundberg, Erik
Publisher: name: arXiv
Year: 2014
Subjects: subject: Complex Variables (math.CV)
subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 35R35, 76B47, 30C20, 31A05

description: Exceptional domains are domains on which there exists a positive harmonic function, zero on the boundary and such that the normal derivative on the boundary is constant. Recent results classify exceptional domains as belonging to either a certain one-parameter family of simply periodic domains or one of its scaling limits. We introduce quasi-exceptional domains by allowing the boundary values to be different constants on each boundary component. This relaxed definition retains the interesting property of being an \emph{arclength quadrature domain}, and also preserves the connection to the hollow vortex problem in fluid dynamics. We give a partial classification of such domains in terms of certain Abelian differentials. We also provide a new two-parameter family of periodic quasi-exceptional domains. These examples generalize the hollow vortex array found by Baker, Saffman, and Sheffield (1976). A degeneration of regions of this family provide doubly-connected examples.
description: 19 pages, 3 figures
Desarrollo de un índice de desempeño ambiental de la planificación regional. El caso del corredor costero Tijuana-Rosarito-Ensenada, Baja California, México /
Creators: name: Aguilar Hernández, Yoal Antonio
Publisher: name: Universidad Autónoma de Baja California.
Year: 2022
Subjects: subject: Protección ambiental||Planificación ambiental||Política ambiental||Ciencias||Tesis
subject: GE190 A35 2008

description: El presente trabajo propone un Índice de Desempeño Ambiental (IDA) que permita evaluar el grado de un instrumento de planificación a nivel regional, establecido para la zona costera de Baja California.
A Pedagogical Venturing into the Three Sisters' Garden: Lessons of Attunement and Reciprocity in Education
Creators: name: Skuce, Tim
name: Pelech, Sharon
Publisher: name: Journal of Applied Hermeneutics
Year: 2020

description: This paper explores the connections the authors make between their experiences in the classroom and the powerful work of Robin Wall Kimmerer (2013) in Braiding Sweetgrass: Indigenous Wisdom, Scientific Knowledge, and the Teaching of Plants; specifically, her chapter entitled “The Three Sisters.” Through Kimmerer’s work, we interpret our own experiences within the classroom. We also draw upon Hans-Georg Gadamer’s philosophical hermeneutics in general and his notion of Erfahrung in particular. We were inspired by the author’s insights into how she happened upon a “new teacher” for her students. As a result, this paper explores her work, as it provides an image of what it is to be present among students while honouring the topic’s own being and becoming--staying open to its future possibilities not yet known. The pedagogical turn away from predetermined outcomes to reciprocity, interconnectedness, and relationships is examined in how they help us understand teaching and learning. Keywords: Three Sisters; Kimmerer; hermeneutics; curriculum, erfahrung; reciprocity, education; pre-service teachers
description: Journal of Applied Hermeneutics, 2020: 2020
Greenland Ecosystem Monitoring: Journey Towards Meeting The FAIR Principles
Creators: name: Roemer, Jonas K.
Publisher: name: Zenodo
Year: 2023

description: This presents the observations, lessons learned and ongoing activities in data management of Greenland Ecosystem Monitoring (GEM) (https://www.g-e-m.dk), with a focus on taking an independent arctic data repository towards open science and meeting the FAIR data principles (Findable-Accessible-Interoperable-Reusable). Requirements on data management and demands for following the FAIR principles are more common today than they were a few years ago - FAIR as a term was only coined in 2016. The field has been, and is developing rapidly and we are excited to be part in both general and arctic data communities. The work is a contribution to my role as RDA / EOSC Future Domain Ambassador in the arctic data community. The poster was created with RStudio, RMarkdown, Posterdown. The renderered PDF poster is included in the files package.
Central role of domain wall depinning for perpendicular magnetization switching driven by spin torque from the spin Hall effect
Creators: name: Lee, O. J.
name: Liu, L. Q.
name: Pai, C. F.
name: Tseng, H. W.
name: Li, Y.
name: Ralph, D. C.
name: Buhrman, R. A.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We study deterministic magnetic reversal of a perpendicularly magnetized Co layer in a Co/MgO/Ta nano-square driven by spin Hall torque from an in-plane current flowing in an underlying Pt layer. The rate-limiting step of the switching process is domain-wall (DW) depinning by spin Hall torque via a thermally-assisted mechanism that eventually produces full reversal by domain expansion. An in-plane applied magnetic field collinear with the current is required, with the necessary field scale set by the need to overcome DW chirality imposed by the Dzyaloshinskii-Moriya interaction. Once Joule heating is taken into account the switching current density is quantitatively consistent with a spin Hall angle θ$_{SH}$ ${\approx}$ 0.07 for 4 nm of Pt.
Spin Transfer Torque and Electric Current in Helical Edge States in Quantum Spin Hall Devices
Creators: name: Meng, Qinglei
name: Vishveshwara, Smitha
name: Hughes, Taylor L.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We study the dynamics of a quantum spin Hall edge coupled to a magnet with its own dynamics. Using spin transfer torque principles, we analyze the interplay between spin currents in the edge state and dynamics of the axis of the magnet, and draw parallels with circuit analogies. As a highlighting feature, we show that while coupling to a magnet typically renders the edge state insulating by opening a gap, in the presence of a small potential bias, spin-transfer torque can restore perfect conductance by transferring angular momentum to the magnet. In the presence of interactions within the edge state, we employ a Luttinger liquid treatment to show that the edge, when subject to a small voltage bias, tends to form a unique dynamic rotating spin wave state that naturally couples into the dynamics of the magnet. We briefly discuss realistic physical parameters and constraints for observing this interplay between quantum spin Hall and spin-transfer torque physics.
description: 6 pages, 2 figures
Cosmic Ray Excesses from Multi-component Dark Matter Decays
Creators: name: Geng, Chao-Qiang
name: Huang, Da
name: Tsai, Lu-Hsing
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We use multi-component decaying dark matter (DM) scenario to explain the possible cosmic ray excesses in the positron fraction recently confirmed by AMS-02 and the total $e^+ +e^-$ flux observed by Fermi-LAT. In the two-component DM models, we find an interesting variation of the flavor structure along with the cutoff of the heavy DM. For the three-component DM case, we focus on a particular parameter range in which the best fits prefer to open only 2 DM decay channels with a third DM contributing nothing to the electron and positron spectra. We show that all models give the reasonable fits to both the AMS-02 positron fraction and the Fermi-LAT total $e^++e^-$ flux, which are also consistent with the measured diffuse $γ$-ray flux by Fermi-LAT.
description: 10 pages, 1 figures, submitted to the special issue of Mod. Phys. Lett.A "Indirect Dark Matter Searches"
Structural and metal-insulator transitions in ionic liquid-gated Ca3Ru2O7 surface
Creators: name: Puls, Conor P.
name: Cai, Xinxin
name: Zhang, Yuhe
name: Peng, Jin
name: Mao, Zhiqiang
name: Liu, Ying
Publisher: name: arXiv
Year: 2013
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We report the fabrication and measurements of ionic liquid gated Hall bar devices prepared on thin Ca$_3$Ru$_2$O$_7$ flakes exfoliated from bulk single crystals that were grown by a floating zone method. Two types of devices with their electrical transport properties dominated by $c$-axis transport in Type A or that of the in-plane in Type B devices, were prepared. Bulk physical phenomena, including a magnetic transition near 56 K, a structural and metal-insulator transition at a slightly lower temperature, as well as the emergence of a highly unusual metallic state as the temperature is further lowered, were found in both types of devices. However, the Shubnikov-de Haas oscillations were found in Type A but not Type B devices, most likely due to enhanced disorder on the flake surface. Finally, the ionic liquid gating of a Type B device revealed a shift in critical temperature of the structural and metal-insulator transitions, suggesting that such transitions can be tuned by the electric field effect.
description: 5 pages, 4 figures
Animal assisted intervention and social-emotional learning
Creators: Bertholet, Brianna
Publisher: name: University of Alberta Library
Year: 2022

The purpose of this research was to examine the effects of Animal Assisted Intervention (AAI) with a group of elementary students while learning five social-emotional skills. This research looked specifically at student attendance, overall engagement and learning retention during the social-emotional learning (SEL) lessons. I designed a program called PAWsitive Assisted Learning (PAL) which uses AAI to support students while they are learning SEL skills. These social-emotional lessons included: self-awareness, self-management, responsible decision making, social awareness, and relationship building. The AAI involved my certified wellness dog, Pongo. The study was conducted over seven weeks and included seven participants in my grade five class. The research demonstrated that Pongo and AAI had a positive impact on both the learning environment and learning retention but no direct influence on student attendance.
Minimal Composite Higgs Models at the LHC
Creators: name: Carena, Marcela
name: Da Rold, Leandro
name: Ponton, Eduardo
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We consider composite Higgs models where the Higgs is a pseudo-Nambu Goldstone boson arising from the spontaneous breaking of an approximate global symmetry by some underlying strong dynamics. We focus on the SO(5) -> SO(4) symmetry breaking pattern, assuming the partial compositeness paradigm. We study the consequences on Higgs physics of the fermionic representations produced by the strong dynamics, that mix with the Standard Model (SM) degrees of freedom. We consider models based on the lowest-dimensional representations of SO(5) that allow for the custodial protection of the Z -> b b coupling, i.e. the 5, 10 and 14. We find a generic suppression of the gluon fusion process, while the Higgs branching fractions can be enhanced or suppressed compared to the SM. Interestingly, a precise measurement of the Higgs boson couplings can distinguish between different realizations in the fermionic sector, thus providing crucial information about the nature of the UV dynamics.
description: 55 pages, 18 figures, References added
EMPLOYMENT TRENDS IN THE RENEWABLE ENERGY SECTOR
Creators: name: ANNA M., KLEPACKA
name: ANNA M., KLEPACKA
Publisher: name: Unknown
Year: 2022
Subjects: subject: Agribusiness
subject: Labor and Human Capital
subject: Resource /Energy Economics and Policy
subject: employment
subject: renewable energy sources
subject: ranking
subject: pair-wise comparison method
subject: European Union

description: The article aims to identify the changes in the number of employees in European Union (EU) countries in the renewable energy sector in 2018 compared to 2014. EurObserv’ER yearbooks were the source of data on employment and capacity for selected renewable energy sources. The paper uses descriptive and pair-wise comparison methods. The largest decreases in employment were observed among countries that are leaders in the RES market (e.g., Germany, France). On the other hand, the greatest increases in employment were determined by source development opportunities in a given country, e.g., biofuels in Romania, Poland, Hungary, or Lithuania. The conducted pair-wise comparison indicated that the relation between the change in the ranking position and the change in the number of employees was significant for EU countries, whose ranking positions are both in the first (combination AA – I) and the second ten (combination CC – II) in the RES sector. Moreover, the results of the statistical analysis indicated a significant relationship and p-value significance in 11 out of 12 variables adopted for correlation, covering the number of employed and installed capacity in selected RES sectors in 2014 and 2018.
A principal's journey: A study into the impact of weaving Indigenous knowledges alongside students in an elementary school setting
Creators: MacTaggart, Cory Garnet
Publisher: name: University of Alberta Library
Year: 2022

According to the 94 Calls to Action, it is vital that educators learn and apply foundational knowledge of First Nations, Métis, and Inuit knowledge systems and perspectives in schools. Thus, students and teachers must have ample opportunities to learn about Indigenous culture from Elders, Knowledge Keepers, and communities. Moreover, Alberta's Leadership Quality Standard outlines the responsibility of teacher leaders/administrators to lead a professional learning community to ensure the application of foundational knowledge of Indigenous peoples is established within the school culture and community. As we think about our responsibilities as teacher leaders, what role do we have in students’ learning to ensure deeper understandings? This study shares my journey as a principal coming alongside my elementary school community which is unique in many ways. With the guidance of a Knowledge Keeper on staff to support teachers, students, and families, we have been able to provide intentional teachings and opportunities to engage in Indigenous programming over the past six years. Through holding focus group conversations with 20 children in grades 4, 5, and 6 during the 2021-2022 school year, this research highlights the impact of Indigenous teachings on these children's experiences and learning. By attending to the experiences of the children, this research provides deeper insights into the importance of continually reflecting on our practices and learning as teacher leaders as well as creating spaces for meaningful learning alongside children, families, Knowledge Keepers, Elders, teachers, and the community.
Impacto de la vegetación y configuración espacial de cañones urbanos, sobre el confort térmico
Creators: name: Acosta Fernández, Gladys Adriana
Publisher: name: Universidad Autónoma de Baja California.
Year: 2022
Subjects: subject: Zonas urbanas cálidas||Climatología urbana
subject: QC981.7.U7 A26 2022

description: En los últimos años, los entornos urbanos han presentado un aumento en la temperatura del aire relacionado al crecimiento poblacional, configuración urbana y urbanización de las ciudades, lo que se vincula directamente con los efectos de la Isla de Calor Urbana
Libre accès et HAL : quels sont mes droits ? (SHS)
Creators: name: Pauplin, Pascale
Publisher: name: Zenodo
Year: 2022
Subjects: HAL
Open access
Libre accès
HCERES
Publications
SHS

description: Objectifs
 • Se familiariser avec les bonnes pratiques et les différentes options de mise en libre accès de ses publications, notamment pour répondre à des appels à projets
 • Connaître les différents aspects du droit d’auteur en lien avec la publication académique
 • Découvrir le formulaire de dépôt de l’archive ouverte HAL Sorbonne Université
 Contenus
 • Éléments juridiques et politiques publiques encadrant l’accès ouvert aux publications
 • Présentation du portail HAL Sorbonne Université
 • Démonstration de dépôt de documents dans l’archive ouverte HAL Sorbonne Université
 • Trucs et astuces pour la gestion de ses publications dans HAL
Interference in a two-mode Bose system with $N$ particles is typical
Creators: name: Facchi, P.
name: Nakazato, H.
name: Pascazio, S.
name: Pepe, F. V.
name: Yuasa, K.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Physics (quant-ph)
subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: When a Bose-Einstein condensate is divided into two parts, that are subsequently released and overlap, interference fringes are observed. We show here that this interference is typical, in the sense that most wave functions of the condensate, randomly sampled out of a suitable ensemble, display interference. We make no hypothesis of decoherence between the two parts of the condensates.
description: 12 pages, 2 figures