cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Breakdown of Semiclassical Methods in de Sitter Space
Creators: name: Burgess, C. P.
name: Holman, R.
name: Leblond, L.
name: Shandera, S.
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Massless interacting scalar fields in de Sitter space have long been known to experience large fluctuations over length scales larger than Hubble distances. A similar situation arises in condensed matter physics in the vicinity of a critical point, and in this better-understood situation these large fluctuations indicate the failure in this regime of mean-field methods. We argue that for non-Goldstone scalars in de Sitter space, these fluctuations can also be interpreted as signaling the complete breakdown of the semi-classical methods widely used throughout cosmology. By power-counting the infrared properties of Feynman graphs in de Sitter space we find that for a massive scalar interacting through a λϕ^4$ interaction, control over the loop approximation is lost for masses smaller than m \simeq \sqrt λH/2π, where H is the Hubble scale. We briefly discuss some potential implications for inflationary cosmology.
description: 24 pages, 7 figures, v2; added references, clarified the resummation discussion
title: Ð Ð°Ð·ÑÐ°Ð±Ð¾ÑÐºÐ° Ð¸ Ð²Ð½ÐµÐ´ÑÐµÐ½Ð¸Ðµ SCADA-ÑÐ¸ÑÑÐµÐ¼Ñ Ð»Ð°Ð±Ð¾ÑÐ°ÑÐ¾ÑÐ½Ð¾Ð³Ð¾ ÐºÐ¾Ð¼Ð¿Ð»ÐµÐºÑÐ°
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð±Ð°ÐºÐ°Ð»Ð°Ð²ÑÐ°
titleType: Subtitle
title: Development and integration SCADA-system of laboratory complex
Creators: name: ÐÐ°Ð»Ð°Ð±Ð°ÐµÐ², ÐÐ½Ð´ÑÐµÐ¹
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2021
Subjects: Ð»Ð°Ð±Ð¾ÑÐ°ÑÐ¾ÑÐ½ÑÐ¹ ÐºÐ¾Ð¼Ð¿Ð»ÐµÐºÑ
SCADA-ÑÐ¸ÑÑÐµÐ¼Ð°
Modbus TCP
OPC-ÑÐµÑÐ²ÐµÑ
Ñ Ð¸Ð¼Ð¸ÑÐµÑÐºÐ°Ñ Ð»Ð¸Ð½Ð¸Ñ Festo
laboratory complex
SCADA-system
OPC-server
chemical line Festo

description: Ð¢ÐµÐ¼Ð° Ð²ÑÐ¿ÑÑÐºÐ½Ð¾Ð¹ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð¾Ð¹ ÑÐ°Ð±Ð¾ÑÑ: Ð Ð°Ð·ÑÐ°Ð±Ð¾ÑÐºÐ° Ð¸ Ð²Ð½ÐµÐ´ÑÐµÐ½Ð¸Ðµ SCADA-ÑÐ¸ÑÑÐµÐ¼Ñ Ð»Ð°Ð±Ð¾ÑÐ°ÑÐ¾ÑÐ½Ð¾Ð³Ð¾ ÐºÐ¾Ð¼Ð¿Ð»ÐµÐºÑÐ°. Ð ÑÐ¾Ð´Ðµ ÑÐ°Ð±Ð¾ÑÑ Ð±ÑÐ»Ð° ÑÐ°Ð·ÑÐ°Ð±Ð¾ÑÐ°Ð½Ð° SCADA-ÑÐ¸ÑÑÐµÐ¼Ð° Ð»Ð°Ð±Ð¾ÑÐ°ÑÐ¾ÑÐ½Ð¾Ð³Ð¾ ÐºÐ¾Ð¼Ð¿Ð»ÐµÐºÑÐ°, Ð¿ÑÐµÐ´ÑÑÐ°Ð²Ð»ÑÑÑÐµÐ³Ð¾ ÑÐ¾Ð±Ð¾Ð¹ ÑÐ¸Ð¼Ð¸ÑÐµÑÐºÑÑ Ð»Ð¸Ð½Ð¸Ñ, Ð² Ð¸Ð½ÑÑÑÑÐ¼ÐµÐ½ÑÐ°Ð»ÑÐ½Ð¾Ð¹ ÑÑÐµÐ´Ðµ MasterSCADA. ÐÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½ ÑÑÐ½ÐºÑÐ¸Ð¾Ð½Ð°Ð» ÑÑÐ°Ð½ÑÐ¸Ð¹ Ð¸ Ð¾Ð¿ÑÐµÐ´ÐµÐ»ÐµÐ½Ñ Ð´Ð°Ð½Ð½ÑÐµ, ÐºÐ¾ÑÐ¾ÑÑÐµ ÑÑÐµÐ±ÑÐµÑÑÑ Ð¿ÐµÑÐµÐ´Ð°ÑÑ Ð² SCADA-ÑÐ¸ÑÑÐµÐ¼Ñ. ÐÐ»Ñ Ð¾ÑÐ³Ð°Ð½Ð¸Ð·Ð°ÑÐ¸Ð¸ Ð²Ð·Ð°Ð¸Ð¼Ð¾Ð´ÐµÐ¹ÑÑÐ²Ð¸Ñ Ð¼ÐµÐ¶Ð´Ñ ÐÐÐ Ð¸ SCADA-ÑÐ¸ÑÑÐµÐ¼Ð¾Ð¹, Ð² ÑÑÐµÐ´Ðµ Simatic Step7 Ð±ÑÐ» ÑÐ¾Ð·Ð´Ð°Ð½ Ð±Ð»Ð¾Ðº Ð´Ð°Ð½Ð½ÑÑ Ð´Ð»Ñ Ð¿ÐµÑÐµÐ´Ð°ÑÐ¸ Ð¿Ð¾ Ð¿ÑÐ¾ÑÐ¾ÐºÐ¾Ð»Ñ Modbus TCP. Ð¡Ð¾Ð·Ð´Ð°Ð½ OPC-ÑÐµÑÐ²ÐµÑ. ÐÐ°ÑÐ°Ð¼ÐµÑÑÑ Ð¿ÑÐ¸Ð²ÑÐ·Ð°Ð½Ñ Ðº ÑÐ¾Ð¾ÑÐ²ÐµÑÑÑÐ²ÑÑÑÐ¸Ð¼ ÑÐ»ÐµÐ¼ÐµÐ½ÑÐ°Ð¼ SCADA-ÑÐ¸ÑÑÐµÐ¼Ñ.
description: The topic of the final qualification work: Development and integration SCADA-system of labor-atory complex. During the execution of the work, SCADA-system of laboratory complex which represents chemical line was developed in MasterSCADA. The functionality of the stations was explored and the data that needs to be transmitted to the SCADA-system was determined. To organize the communication between PLC and SCADA-system data block was created in Simatic Step7 for transmission over the Modbus TCP protocol. OPC-server was created. The parame-ters was binded to matching elements of SCADA-system.
CHALLENGES OF TEACHING WRITING SKILLS IN EFL CLASS  ROOMS: THE CASE OF TWO PREPARATORY SCHOOLS IN  WOLAITA ZONE
Creators: name: ABERA URAGO
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2016

description: This study is an assessment of challenges of teaching writing skills in EFL classrooms. It  was
conducted to assess  the challenges that teachers  face during teaching  writing skills  in EFL
classrooms.  It  also  aimed to  identify  the  most  serious  challenges  faced  by  teachers  during
teaching  writing  skills.  The  study  was  carried  out  in  Sodo  and  Areka  preparatory  schools.
All  28  English  teachers  who  teach  in  preparatory  level  were  included.  In  order  to  obtain
relevant  and  sufficient  information,  the  researcher  used  questionnaire  and  interview  as
instruments. Among the teachers, five teachers were used randomly for interview process. All
the  instruments  were  piloted  before  the  actual  data  collection  process  on  non-sample
subjects.  The data collected  were analyzed quantitatively and qualitatively. The findings of
the study revealed  that teachers  face a lot of challenges during  teaching writing  skills. These
challenges  are  teacher  related  challenges,  student  related  challenges,  textbook  related
challenges, class room related challenges, L1 related challenges, and instructional material
related challenges. In addition, parents related challenges, and lengthy or difficult nature of
the  writing  skill  itself  are  briefly  the  challenges  faced  by  teachers.  The  most  serious
challenges  such  as  students’  poor  writing  skill  background,  insufficient  knowledge  of
vocabulary,  grammar  and  mechanics  are  faced  by  teachers.  Similarly,  large  class  size,
influence  of L1, lack of supportive instructional materials, lack of adequate time to practice
writing  skill,  and  lack  of  motivation  and  encouragement  are  the  other  most  serious
challenges  faced  by  teachers  during  teaching  writing  skills.  Based  on  the  results  and
discussions  of  the  study,  important  conclusions  were  drawn  and  some  useful
recommendations were forwarded.
Leveraging NAIRR Pilot Resources for Advancing DeepFake Detection, Student Research, and Broader Engagement
Creators: name: Hu, Shu
Publisher: name: Zenodo
Year: 2025

description: Presented at the “NAIRR Pilot Inaugural Annual Meeting” (NSF Award #2452148), Arlington, VA, USA, February 19-21, 2025. https://zenodo.org/communities/nairr2025
First observation of the cosmic ray shadow of the Moon and the Sun with KM3NeT/ORCA
Creators: name: KM3NeT Collaboration
Publisher: name: arXiv
Year: 2022
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: This article reports the first observation of the Moon and the Sun shadows in the sky distribution of cosmic-ray induced muons measured by the KM3NeT/ORCA detector. The analysed data-taking period spans from February 2020 to November 2021, when the detector had 6 Detection Units deployed at the bottom of the Mediterranean Sea, each composed of 18 Digital Optical Modules. The shadows induced by the Moon and the Sun were detected with a statistical significance of 4.2σ and 6.2σ, respectively, at their nominal position. This early result confirms the effectiveness of the detector calibration, in time, position and orientation and the accuracy of the event direction reconstruction. This also demonstrates the performance and the competitiveness of the detector in terms of pointing accuracy and angular resolution.
description: 15 pages, 7 figures
PROTOCOLO CLÍNICO GERENCIADO DE TRATAMENTO DE FERIDAS
Creators: name: Gustavo, Lopes Soares
name: Aurea Elizabeth, Linder
Publisher: name: Zenodo
Year: 2025

description: O protocolo preenche lacunas na farmacoterapia dermatológica, promovendo maior segurança e eficiência no tratamento tópico de feridas, além de contribuir para a capacitação contínua dos profissionais de saúde. Com aplicabilidade em diversos cenários hospitalares, o trabalho exemplifica a translação do conhecimento acadêmico para a prática clínica, destacando-se como um produto de alta relevância social e econômica.
TEACHERS’  AND  LEARNERS’  AWARNESS  AND  TEACHERS’  CLASSROOM  PRACTICE  OF  LEARNING  STYLE DIFFERENCES IN ENGLISH CLASSROOMS
Creators: name: HABTAMU WUBALEM
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2016

description: Learning style is the way which learners characteristically prefer to learn.
In spite of teachers’ and learners’ lack of awareness of different learning styles,
mismatches  often  occur  between  the  learning  style  of  students  teaching
methods,  content  selection,  and  instructional  aides  usage  of  teachers.  This
results in  less learning and misbehaving. This paper defines several dimensions
of learning styles particularly relevant to second or foreign language classes.
The  research  examines  the  teachers’  and  learners’  awareness  and
classroom  practice  about  the  leaning  style  differences  and  suggests  the
important steps and modalities to address the educational needs of all students
in  language  classes.  Multiple  data  collection  tools  (questionnaire,  observation,
and  interview)  were  used  to  obtain  adequate  information  about  teachers’  and
learners’ awareness and classroom practice of learning style differences.
The  finding  of  the  study  shows  that  the  majority  of  English  language
teachers  and  learners  who  took  part  in  the  study  have  no  clear  awareness
about leaning style differences in English classrooms. It also shows they do not
practice  it  properly  in  the  classroom.  Concerning  the  finding  the  researcher
forwarded applicable recommendations for the concerned bodies.
Modeling of mode-locking in a laser with spatially separate gain media
Creators: name: Oldenbeuving, R. M.
name: Lee, C. J.
name: van Voorst, P. D.
name: Offerhaus, H. L.
name: Boller, K. -J.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We present a novel laser mode-locking scheme and discuss its unusual properties and feasibility using a theoretical model. A large set of single-frequency continuous-wave lasers oscillate by amplification in spatially separated gain media. They are mutually phase-locked by nonlinear feedback from a common saturable absorber. As a result, ultra short pulses are generated. The new scheme offers three significant benefits: the light that is amplified in each medium is continuous wave, thereby avoiding issues related to group velocity dispersion and nonlinear effects that can perturb the pulse shape. The set of frequencies on which the laser oscillates, and therefore the pulse repetition rate, is controlled by the geometry of resonator-internal optical elements, not by the cavity length. Finally, the bandwidth of the laser can be controlled by switching gain modules on and off. This scheme offers a route to mode-locked lasers with high average output power, repetition rates that can be scaled into the THz range, and a bandwidth that can be dynamically controlled. The approach is particularly suited for implementation using semiconductor diode laser arrays.
description: 13 pages, 5 figures, submitted to Optics Express
Early results from GLASS-JWST. XIV: A spectroscopically confirmed protocluster 650 million years after the Big Bang
Creators: name: Morishita, Takahiro
name: Roberts-Borsani, Guido
name: Treu, Tommaso
name: Brammer, Gabriel
name: Mason, Charlotte A.
name: Trenti, Michele
name: Vulcani, Benedetta
name: Wang, Xin
name: Acebron, Ana
name: Bahé, Yannick
name: Bergamini, Pietro
name: Boyett, Kristan
name: Bradac, Marusa
name: Calabrò, Antonello
name: Castellano, Marco
name: Chen, Wenlei
name: De Lucia, Gabriella
name: Filippenko, Alexei V.
name: Fontana, Adriano
name: Glazebrook, Karl
name: Grillo, Claudio
name: Henry, Alaina
name: Jones, Tucker
name: Kelly, Patrick L.
name: Koekemoer, Anton M.
name: Leethochawalit, Nicha
name: Lu, Ting-Yi
name: Marchesini, Danilo
name: Mascia, Sara
name: Mercurio, Amata
name: Merlin, Emiliano
name: Metha, Benjamin
name: Nanayakkara, Themiya
name: Nonino, Mario
name: Paris, Diego
name: Pentericci, Laura
name: Santini, Paola
name: Strait, Victoria
name: Vanzella, Eros
name: Windhorst, Rogier A.
name: Rosati, Piero
name: Xie, Lizhi
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present the spectroscopic confirmation of a protocluster at $z=7.88$ behind the galaxy cluster Abell2744 (hereafter A2744-z7p9OD). Using JWST NIRSpec, we find seven galaxies within a projected radius of 60kpc. Although the galaxies reside in an overdensity around $>20\times$ greater than a random volume, they do not show strong Lyman-alpha emission. We place 2-$σ$ upper limits on the rest-frame equivalent width $<16$-$28$AA. Based on the tight upper limits to the Lyman-alpha emission, we constrain the volume-averaged neutral fraction of hydrogen in the intergalactic medium to be $x_{\rm HI} > 0.45$ (68% CI). Using an empirical $M_{\rm UV}$-$M_{\rm halo}$ relation for individual galaxies, we estimate that the total halo mass of the system is $\gtrsim 4\times10^{11}\,M_\odot$. Likewise, the line of sight velocity dispersion is estimated to be $1100 \pm 200$km/s. Using an empirical relation, we estimate the present-day halo mass of A2744-z7p9OD to be $\sim2\times10^{15}\,M_\odot$, comparable to the Coma cluster. A2744-z7p9OD is the highest redshift spectroscopically confirmed protocluster to date, demonstrating the power of JWST to investigate the connection between dark-matter halo assembly and galaxy formation at very early times with medium-deep observations at $<20$hrs total exposure time. Follow-up spectroscopy of the remaining photometric candidates of the overdensity will further refine the features of this system and help characterize the role of such overdensities in cosmic reionization.
description: The title has been updated to reflect the published numbering; a minor change has been made to Figure 1 with regard to the MSA shutters on the rgb stamp image. NASA press release article can be found at: https://www.nasa.gov/feature/goddard/2023/webb-reveals-early-universe-prequel-to-huge-galaxy-cluster
Service-Driven Farming: Keeping Quality of Life for Ageing Rural Community
Creators: name: Živilė, Gedminaitė-Raudonė
name: Dalia, Vidickiene
name: Živilė, Gedminaitė-Raudonė
name: Dalia, Vidickiene
Publisher: name: Unknown
Year: 2020
Subjects: subject: Farm Management
subject: Institutional and Behavioral Economics
subject: Labor and Human Capital
subject: economic system
subject: service-driven
subject: business model
subject: servitization
subject: rural community

description: Early retirement from farming was proposed by many of the EU measures. The age structure in the EU currently demands a shift from such an outdated approach, and to focus on the highly-valued experiences of elderly people, which should be utilized by involving them in social and economic activities. Among the key challenges for rural development policy aiming to increase the quality of life of elderly, next to the traditional help and support measures, is the involvement of the elder generation in economic and social life. Therefore, the new EU agricultural policy measures should ensure that funding and institutional incentives support extending the working and active social life of the elderly farmers. One of the possible ways to change such an approach deals with servitization. The literature on servitization in manufacturing has been growing rapidly in the last decades, but only a few studies demonstrate how to apply a service-driven business model in agriculture. This paper aims to demonstrate a creative way to use a service-driven business model in farming and, at the same time, the ability of servitization projects to influence the vitality of rural communities by generating economic, social, and cultural effects. A case study on an innovative servitization initiative in rural areas of Lithuania “Rent a piece of garden” is used as a theory generating approach, which considers the needs of the elderly rural generation.
description: DOI:10.30858/RAD/2020/17.0500
TEACHERS’ AND STUDENTS’ ATTITUDE TOWARDS  COOPERATIVE LEARNING IN EFL CLASSES:  FIVE  SECONDARY SCHOOLS OF CHENA WOREDA IN FOCUS
Creators: name: ABIOT TEKALIGN
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2016

description: The  purpose  of  this  study  was  to  investigate  teachers’  and  students’  attitude  towards
cooperative  learning  at  five  secondary  schools  of  Chena  woreda.  In  the  woreda,  there
are seven secondary schools. The researcher selected the sample schools through  simple
random  sampling  technique.  In  order  to  collect  data,  questionnaire  and  focus  group
discussions were used. Besides, EFL teachers and students were participants of the study.
Regarding selection of the sample, purposive sampling was used to determine participant
teachers. Meanwhile, systematic sampling was used to select the student s. Accordingly,
21 teachers and 174 students were included as respondents of the  study. With regard  to
research design, the researcher used descriptive survey. This method was preferably used
to  collect  information  from  various  participants.  Moreover,  to  analyze  data,  both
quantitative  and  qualitative  approaches  were  employed.  The  study  showed  that  both
teachers  and  students  had  positive  attitude  towards  cooperative  learning.  It  was  also
found that there was an attitudinal link between teachers and students. Issues that were
identified as hurdles to implement cooperative learning were commonly shared by both
teachers and students.  Based on the above findings, there were some recommendations
forwarded.  These  were:  there  were  some  teachers  who  were  not  motivated  to  teach
through cooperative  learning. Therefore, concerned  bodies like woreda education office
along with supervisors should prepare trainings to provide these teachers  with potential
benefits of CL.
On Hall's conjecture
Creators: name: Dujella, Andrej
Publisher: name: arXiv
Year: 2010
Subjects: subject: Number Theory (math.NT)
subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 11C08, 11D25, 11D75

description: We show that for any even positive integer d there exist polynomials x and y with integer coefficients such that deg(x) = 2d, deg(y) = 3d and deg(x^3 - y^2) = d + 5.
description: 7 pages, minor changes, to appear in Acta Arith
Thermal three-point functions from holographic Schwinger-Keldysh contours
Creators: name: Pantelidou, Christiana
name: Withers, Benjamin
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We compute fully retarded scalar three-point functions of holographic CFTs at finite temperature using real-time holography. They describe the nonlinear response of a holographic medium under scalar forcing, and display single and higher-order poles associated to resonant QNM excitations. This involves computing the bulk-to-bulk propagator on a piecewise mixed-signature spacetime, the dual of the Schwinger-Keldysh contour. We show this construction is equivalent to imposing ingoing boundary conditions on a single copy of a black hole spacetime, similar to the case of the two-point function. We also compute retarded scalar correlators with stress-tensor insertions in general CFTs by solving Ward identities on the Schwinger-Keldysh contour.
description: 21 pages, 4 figures. Typo fixed and discussed FDT with bulk-bulk propagators
An Ignoble Approach to Large Field Inflation
Creators: name: Kaloper, Nemanja
name: Lawrence, Albion
name: Sorbo, Lorenzo
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study an inflationary model developed by Kaloper and Sorbo, in which the inflaton is an axion with a sub-Planckian decay constant, whose potential is generated by mixing with a topological 4-form field strength. This gives a 4d construction of "axion monodromy inflation": the axion winds many times over the course of inflation and draws energy from the 4-form. The classical theory is equivalent to chaotic inflation with a quadratic inflaton potential. Such models can produce "high scale" inflation driven by energy densities of the order of $(10^{16}\ GeV)^4$, which produces primordial gravitational waves potentially accessible to CMB polarization experiments. We analyze the possible corrections to this scenario from the standpoint of 4d effective field theory, identifying the physics which potentially suppresses dangerous corrections to the slow-roll potential. This yields a constraint relation between the axion decay constant, the inflaton mass, and the 4-form charge. We show how these models can evade the fundamental constraints which typically make high-scale inflation difficult to realize. Specifically, the moduli coupling to the axion-four-form sector must have masses higher than the inflationary Hubble scale ($\la\ 10^{14}\ GeV$). There are also constraints from states that become light due to multiple windings of the axion, as happens in explicit string theory constructions of this scenario. Further, such models generally have a quantum-mechanical "tunneling mode" in which the axion jumps between windings, which must be suppressed. Finally, we outline possible observational signatures.
description: 39 pages LaTeX with bibtex, 5 .eps figures
Star Clusters as Tracers of Interactions in Stephan's Quintet (Hickson Compact Group 92)
Creators: name: Fedotov, K.
name: Gallagher, S. C.
name: Konstantopoulos, I. S.
name: Chandar, R.
name: Bastian, N.
name: Charlton, J. C.
name: Whitmore, B.
name: Trancho, G.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Stephan's Quintet (SQ) is a compact group of galaxies that exhibits numerous signs of interactions between its members. Using high resolution images of SQ in B438, V606, and I814 bands from the Early Release Science project obtained with the Wide Field Camera 3 on the Hubble Space Telescope, we identify 496 star cluster candidates (SCCs), located throughout the galaxies themselves as well as in intergalactic regions. Our photometry goes \sim2 mag deeper and covers an additional three regions, the Old Tail, NGC 7317, and the Southern Debris Region, compared to previous work. Through comparison of the B438 - V606 and V606 - I814 colors of the star cluster candidates with simple stellar population synthesis models we are able to constrain cluster ages. In particular, the most massive galaxy of SQ, NGC 7319, exhibits continuous star formation throughout its history, although at a lower rate over the past few tens of Myr. NGC 7318 A/B and the Northern Star Burst region both show ongoing active star formation; there are a number of star clusters that are younger than 10 Myr. NGC 7318 A/B also features a peculiar gap in the color distribution of the star clusters that can be used to date the onset of the recent burst. The majority of the SCCs detected in the Young Tail were formed 150-200 Myr ago whereas the tight distribution of star cluster colors in the Old Tail, allow us to constrain its age of formation to \sim400 Myr ago. The star clusters in the Southern Debris region are seemingly divided into two groups with ages of 50 and \sim500 Myr and virtually all of the SCCs detected in NGC 7317 are over 2 Gyr old. Based on these ages, we estimate time intervals for the interactions between SQ members that triggered the massive star cluster formation.
description: 41 pages, 15 figures. Accepted for publication in The Astronomical Journal
Evaluating Writing Tasks of Grade Nine English  Textbook
Creators: name: Belaynesh Geda
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2016

description: Here in Ethiopia, as in elsewhere, textbooks are important factors in English language teaching
programs.  Making  judgments  about  component  parts  of  these  textbooks  needs  systematic
textbook evaluation. Despite the great use of these textbooks, it is little or not yet known to what
extent the contents and presentation of lessons, for instance, writing tasks were practical based of
criteria of textbook evaluation. The main objectives of the present study was to investigate
the  writing  tasks  in   the  Grade  9  English  for  Ethiopia  textbook  based  on  a  set  of  criteria  of
textbook  evaluation  and  thereby  find  out  current  perspectives  on  the  part  of  the  respective
teachers  and  students.   The  study  is  descriptive  and  it  employed  three  sets  of  data  collection
tools; namely, content analysis of the writing tasks in the Grade 9 English for Ethiopia, interview
with  teachers  and  questionnaire  to  grade  9  students  currently  learning  at  Hawassa  Tabour
Secondary and Preparatory School. The results in this regard indicated that the Grade 9 English
for Ethiopia textbook demonstrated favorably all the defining qualities that a centrally prepared
textbook should be compose of; that is, the textbook studied is practically organized, relevant,
adequate and appropriate to the language teaching program in operation.  Moreover, it was found
that  the  current  textbooks  are  not  against  the  practical  attributes  or  criteria  for  evaluating
textbooks. However, they argued that attributes as regards capacity of learners‟ were not given
appropriate  attention.  Furthermore,  it  was  disclosed  that  the  textbook  encompasses  favorable
trend  favorable towards making use of the writing tasks both for developing writing skills and
improve their English language use.
A Metallurgical Inspection Method to Assess the Damage in Performance-Limiting Nb3Sn Accelerator Magnet Coils
Creators: name: Moros, Alice
name: Crouvizier, Mickael Denis
name: Santillana, Ignacio Aviles
name: Sgobba, Stefano
name: Bermudez, Susana Izquierdo
name: Lusa, Nicholas
name: Troitino, Jose Ferradas
name: Milanese, Attilio
name: Todesco, Ezio
name: Devred, Arnaud
name: Ambrosio, Giorgio
name: Baldini, Maria
name: Ferracin, Paolo
name: Schmalzle, Jesse
name: Vallone, Giorgio
Publisher: name: arXiv
Year: 2022
Subjects: subject: Accelerator Physics (physics.acc-ph)
subject: FOS: Physical sciences

description: The design and production of Nb3Sn-based dipole and quadrupole magnets is critical for the realization of the High-Luminosity Large Hadron Collider (HL-LHC) at the European Organization for Nuclear Research (CERN). Nb3Sn superconducting coils are aimed at enhancing the bending and focusing strengths of accelerator magnets for HL-LHC and beyond. Due to the brittle nature of Nb3Sn, the coil fabrication steps are very challenging and require very careful QA/QC. Flaws in the Nb3Sn filaments may lead to quenches, and eventually, performance limitation below nominal during magnet testing. A novel inspection method, including advanced non-destructive and destructive techniques, was developed to explore the root-causes of quenches occurring in performance-limiting coils. The most relevant results obtained for MQXF coils through this innovative inspection method are presented. This approach allows for precise assessment of the physical events associated to the quenches experienced b y magnet coils, mainly occurring under the form of damaged strands with transversely broken sub-elements. Coil-slice preparation, micro-optical observations of transverse and longitudinal cross-sections, and a deep etching technique of copper will be illustrated in the present work, with a focus on the results achieved for a CERN coil from a non-conforming quadrupole magnet prototype, and two coils fabricated in the US, in the framework of the Accelerator Upgrade Project (AUP) collaboration, from two different non-conforming quadrupole magnets, respectively. The results obtained through the proposed inspection method will be illustrated.
description: Applied Superconductivity Conference 2022
EXPLORING ORAL COMMUNICATION STRATEGIES UTILIZED IN  ENGLISH CLASSROOM: THE CASE OF WOLAYTTA ZONE DAMOTE  SORE WOREDA GUNUNO SECONDARY SCHOOL GRADE NINE  ENGLISH TEACHERS IN FOCUS BY
Creators: name: SHEWIT SHANKA
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2016

description: The  purpose  of  this study  is to  explore oral  communication  strategies  utilized  in  Wolaytta
zone  Damote  Sore  Woreda  Gununo  secondary  school Grade  nine  English  teachers.  The
descriptive case design is used to explore oral communication strategies utilized in English
classroom, to  investigate  communication  strategies in  terms  of  types  and  number  of
communication  strategies.  To  achieve  the  objective  of  the  study,  seven  English  teachers’
classroom  practices  were  observed  and  audio  recorded.  The  data  was transcribed  and
strategies were identified and analyzed on the basis of Faerch and Kasper (1983) classification
model. The study revealed that teachers utilized fourteen types of communication strategies
classified  under  achievement  and  reduction  strategies. such  as:  repetitions,  using  fillers
,asking for clarification , language switch, literal translation, write on black board, read from
text book, exemplification, reading aloud ,paraphrase, word coinage , foreignzing , message
abandonment  and  message  reduction.  From  these  strategies, language  switch,  using  fillers
and  repetition are  the  most  frequently utilized communication  strategies by  all  teachers  in
delivering their lesson. From fourteen types of communication strategies utilized by sample
teachers, achievement  strategy account  for  97.64%  and reduction  strategies account  for
2.36%. In addition to this, the study indicates that sample teachers utilized fourteen types of
communication  strategies  at  the  frequency  of  791  times  and  types  and  number  of
communication strategies vary across lessons teachers deliver.
Anderson localisation in tight-binding models with flat bands
Creators: name: Chalker, J. T.
name: Pickles, T. S.
name: Shukla, Pragya
Publisher: name: arXiv
Year: 2010
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: We consider the effect of weak disorder on eigenstates in a special class of tight-binding models. Models in this class have short-range hopping on periodic lattices; their defining feature is that the clean systems have some energy bands that are dispersionless throughout the Brillouin zone. We show that states derived from these flat bands are generically critical in the presence of weak disorder, being neither Anderson localised nor spatially extended. Further, we establish a mapping between this localisation problem and the one of resonances in random impedance networks, which previous work has suggested are also critical. Our conclusions are illustrated using numerical results for a two-dimensional lattice, known as the square lattice with crossings or the planar pyrochlore lattice.
description: 5 pages, 3 figures, as published (this version includes minor corrections)
AN  INVESTIGATION  OF  SOME  FACTORS  THAT  AFFECT  THE  IMPLEMENTATION  OF  GROUP  WORK  IN  ENGLISH  LANGUAGE  CLASS  ROOM:  THE  CASE  OF  THREE  PREPARATORY  SCHOOLS  IN  WOLAYTA ZONE
Creators: name: ZEWDINEH GEJA
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2016

description: The study sought to explore teacher, student   and task-related factors tackling  the implemetation
of group work regarding  three preparatory schools of Wolayta Zone.   Descriptive research design
was used for the purpose the study. 182  learners were selected with the aid of systematic random
sampling  while 10 English teachers teaching English in Grade 11were selected with the aid of
convenience  method of sampling. The l earners‘ response to the questionnaire was analyzed using
percentage while teachers‘ responses to the interview were descriptively analyzed.
Absence of clear orientation about the purpose of group work and individuals task within groups
was explored as a teacher-  related factor  affecting implementation group  work. The purpose of a
specific group task and individuals‘ task within groups was not clearly explaind and resulted in
passive participation. In addition, emphasis on whole group assessment was found  as a teacher
related factor. Teachers hardly assessed learners‘ performance in groups and nor did consider the
effort individuals exert in groups.  Few individuals‘ domination within groups was explored as a
teacher-related  constraint.  No  consensus  of  other  fellows  was  considered  during  decisions  on
group issues and position of leadership as chairperson, secretary was held by limited members.
In  addition,  learners‘  low  interest towards  group work  being  caused  by  absence  of  knowledge
about merits of group work and effect of prior teacher-dominated mode of teaching was explored
as a student-related factor limiting  the implementation  of group work. No activity-related factor
was found limiting implementation group work.
Finally, teachers were suggested to sufficiently orient learners about the purpose of activity, how
to  approach  the  activities  and  assign  individual  responsibility  within  groups  for  successful
implementation of  group work. It was suggested that teachers should assess performance within
a  group  largely  at  individual  basis  involving  students  in  the  development  of  criterion  and
marking  practices  .Moreover,  teachers  were  suggested  to  maintain  balance  in  the  level  of
participation among the  members and assign each member with a clearly defined  ro le of being a
―leader‖  who  assigns  different  jobs  to  the  other  members,  a  ―secretary‖  who  takes  notes  and
―presenter‖  reporting  on  issues  organized  by  groups  to  reduce  few  members  domination  in  a
group.Furthermore, teachers were recommended to teach the learners about the values of group
work  to raise their interest towards group learning and assign individuals with a clear task and
responsibility within a group.
The Principles of Agribusiness Social Responsibility From Farmer’s Point of View: Lithuanian Case
Creators: name: Rita, Vilkė
name: Živilė, Gedminaitė-Raudonė
name: Rita, Vilkė
name: Živilė, Gedminaitė-Raudonė
Publisher: name: Unknown
Year: 2020
Subjects: subject: Agribusiness
subject: Institutional and Behavioral Economics
subject: Labor and Human Capital
subject: corporate social responsibility (CSR)
subject: agribusiness
subject: farmer
subject: gender

description: The phenomena of corporate social responsibility (CSR) had been widely discussed from different scientific and practical perspectives worldwide for almost a century. In its initial phase, the main focus was the demand for social responsibilities from businesses in general. Recently, all sectors and all spheres of human activity consider the importance and use of social responsibility, including agribusiness. This study aims to elucidate the importance of the principles of agribusiness social responsibility from a farmer’s point of view. The guiding question of the research is whether a farmer’s gender, next to the other background characteristics (age, generation, education, etc.), is among the factors that shape the way farmers understand the importance of the principles of agribusiness social responsibility. The research results, based on representative survey data of Lithuanian farmers (N=1108), propose that gender might be considered among the factors that shape farmers’ understanding of the principles of agribusiness social responsibility and this makes a promising background for further research.
description: DOI:10.30858/RAD/2020/17.0600
Using activity theory and expansive learning to co-construct understandings of competencies in K-12 education in British Columbia
Creators: name: Younk, Karina
Publisher: name: University of British Columbia
Year: 2019

description: This formative intervention study used activity theory and expansive learning frameworks (Engeström, 2001) to examine how a working group of 12 educational leaders from one British Columbia school district co-constructed their understandings of competencies. These leaders were supporting school and district colleagues with the redesigned curriculum, originally known as the BC Education Plan (2012a) and later as Building Student Success: BC’s New Curriculum (2018a), as well as with the Ministry of Education’s revised Student Reporting Guidelines (2016). Over nine research sessions, participants explored their contexts and future-oriented visions of learning with a focus on competencies. These sessions were audio-taped; the audio tapes were then transcribed. Transcripts were initially sorted for sensitizing concepts according to the theoretical concepts of activity theory: subject, object, mediating instruments, rules, community, and division of labour. This coded data was then analyzed for themes and sub-themes reflecting needs at each state of the expansive learning model: questioning, double-binds of practice, contextual resistance, and reflection on realignments. The analysis that emerged from this process showed how participants co-constructed understandings of competencies that went beyond demonstrations of knowledge, skills, and aptitudes; instead, they focused on competencies as a collective need to honour local collaborative learning communities, co-construct diverse learning paths, and shift systemic practices toward expansive learning. Participants described the importance of professional collaboration, engagement, relationships, and new assessment models, as well as the challenges of supporting colleagues to act on their ideals and contribute to shifting district practices. This study provides a rich perspective on how activity theory and expansive learning can be used as models for understanding the complexities of systemic change in public education systems.
Design and Performance of a Novel Low Energy Multi-Species Beamline for the ALPHA Antihydrogen Experiment
Creators: name: Baker, C. J.
name: Bertsche, W.
name: Capra, A.
name: Cesar, C. L.
name: Charlton, M.
name: Christensen, A. J.
name: Collister, R.
name: Mathad, A. Cridland
name: Eriksson, S.
name: Evans, A.
name: Evetts, N.
name: Fabbri, S.
name: Fajans, J.
name: Friesen, T.
name: Fujiwara, M. C.
name: Gill, D. R.
name: Grandemange, P.
name: Granum, P.
name: Hangst, J. S.
name: Hayden, M. E.
name: Hodgkinson, D.
name: Isaac, C. A.
name: Johnson, M. A.
name: Jones, J. M.
name: Jones, S. A.
name: Khramov, A.
name: Kurchaninov, L.
name: Madsen, N.
name: Maxwell, D.
name: McKenna, J. T. K.
name: Menary, S.
name: Momose, T.
name: Mullan, P. S.
name: Munich, J. J.
name: Olchanski, K.
name: Peszka, J.
name: Powell, A.
name: Rasmussen, C. O.
name: Sacramento, R. L.
name: Sameed, M.
name: Sarid, E.
name: Silveira, D. M.
name: So, C.
name: Starko, D. M.
name: Stutter, G.
name: Tharp, T. D.
name: Thompson, R. I.
name: Torkzaban, C.
name: van der Werf, D. P.
name: Wurtele, J. S.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Accelerator Physics (physics.acc-ph)
subject: FOS: Physical sciences

description: The ALPHA Collaboration, based at the CERN Antiproton Decelerator, has recently implemented a novel beamline for low-energy ($\lesssim$ 100 eV) positron and antiproton transport between cylindrical Penning traps that have strong axial magnetic fields. Here, we describe how a combination of semianalytical and numerical calculations were used to optimise the layout and design of this beamline. Using experimental measurements taken during the initial commissioning of the instrument, we evaluate its performance and validate the models used for its development. By combining data from a range of sources, we show that the beamline has a high transfer efficiency, and estimate that the percentage of particles captured in the experiments from each bunch is (78 $\pm$ 3)% for up to $10^{5}$ antiprotons, and (71 $\pm$ 5)% for bunches of up to $10^{7}$ positrons.
description: 15 pages, 15 figures
Enhanced $B_s$--$\bar{B}_s$ lifetime difference and anomalous like-sign dimuon charge asymmetry from new physics in $B_s \to τ^+ τ^-$
Creators: name: Dighe, Amol
name: Kundu, Anirban
name: Nandi, Soumitra
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: New physics models that increase the decay rate of $B_s \to τ^+ τ^-$ contribute to the absorptive part of $B_s$--$\bar{B}_s$ mixing, and may enhance $ΔΓ_s$ all the way up to its current experimental bound. In particular, the model with a scalar leptoquark can lead to a significant violation of the expectation $ΔΓ_s \leq ΔΓ_s$ (SM). It can even allow regions in the $ΔΓ_s$-$β_s$ parameter space that are close to the best fit obtained by CDF and D\{O} through $B_s \to J/ψϕ$. In addition, it can help explain the anomalous like-sign dimuon charge asymmetry observed recently by DØ. A measurement of $BR(B_s \to τ^+ τ^-)$ is thus crucial for a better understanding of new physics involved in $B_s$--$\bar{B}_s$ mixing.
description: v3: 5 pages, 3 eps figures, Version to be published in Phys. Rev. D, Rapid Communications
An Evaluation of the Writing Tasks of the New English for Ethiopia  Textbook: Grade Twelve in Focus
Creators: name: Getachew Mathewos
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2016

description: The main objective of this study was to evaluate all the writing tasks in the grade twelve English
for Ethiopia students’ textbook in order to find out whether the writing tasks in the textbook are
designed  according  to  the  theories  of  communicative  tasks.  So  as  to  achieve  the  expected
objectives,  the  writing  tasks  were  identified  and  analyzed  based  on  the  components  of
communicative  tasks  and  nature  of  communicative  tasks  as  the  framework  and  checklists
suggested by Nunan (1989) for the communicative tasks. The data for the study were collected
through  document  analysis,  questionnaires  and  interviews.  English  for  Ethiopia  grade  twelve
students’  textbook,  40  students  and  3  teachers  of  the  Gedebano  General  secondary  and
preparatory school were the sources of  the data for the study.  In order to analyze the data, the
researcher used quantitative and qualitative methods.
As the findings of the study indicated that the objectives of the writing tasks are stated explicitly
in  a  way  that  students  could  understand  them  easily.  However,  most  of  the  objectives  are  not
motivating  and  interesting  because  they  lack  variety  or  there  are  redundancies.  Most  of  the
inputs  in  the  textbook  lack  motivational  value/authenticity;  however,  the  writing  activities  are
appropriate to the communicative goals of the tasks because they are presented accordance with
the input data. Besides, the role of the students are clearly stated in the textbook and the roles
are  tried  to  keep  the  principles  of  communicative  language  teaching  approach  by  forwarding
them a greater role in performing the activities.  Moreover, the writing tasks in the textbook are
highly integrated with the other language skills. Almost all of the writing tasks in the textbook
are  intended  to  encourage  language  use/meaning  rather  than  language  forms/structures.
Similarly,  there  is  a  few  in  number  narrative  and  argumentative  types  of  writing  activities.
Finally,  so  as  to  encourage  students  to  practice  mechanics  such  as  punctuation,  grammar,
spelling,  etc  no  writing  activities  are  given  as  well  as  no  attention  is  given  for  cohesion,
coherence and cohesive devices to teach students how to produce well organized writing.
As  a  result,  it  is  recommended  that  textbook  writers/material  developers  for  ELT  classroom
should give focus on the basic components of communicative task, nature of communicative task
and  on  the  appropriateness  of  writing  tasks  in  improving  students’  writing  abilities.  Further,
teachers have to play their role effectively by making some adjustment on the writing tasks when
their students come up with any
Contradiction between the results of observations of resistance and critical current quantum oscillations in asymmetric superconducting rings
Creators: name: Gurtovoi, V. L.
name: Dubonos, S. V.
name: Karpii, S. V.
name: Nikulov, A. V.
name: Tulin, V. A.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Magnetic field dependences of critical current, resistance, and rectified voltage of asymmetric (half circles of different widths) and symmetrical (half circles of equal widths) aluminum rings were measured in the temperature region close to the superconducting transition. All these dependences are periodic magnetic field functions with periods corresponding to the flux quantum in the ring. The periodic dependences of critical current measured in opposite directions were found to be close to each other for symmetrical rings and shifted with respect to each other by half the flux quantum in asymmetric rings with ratios between half circle widths of from 1.25 to 2. This shift of the dependences by a quarter of the flux quantum as the ring becomes asymmetric makes critical current anisotropic, which explains the rectification effect observed for asymmetric rings. Shifts of the extrema of the periodic dependences of critical current by a quarter of the flux quantum contradict directly to the results obtained by measuring asymmetric ring resistance oscillations, whose extrema are, as for symmetrical rings, observed at magnetic fluxes equal to an integer and a half of flux quanta.
description: 6 pages, 6 figures
Origin of the Proton Mass
Creators: name: Roberts, Craig D.
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Lattice (hep-lat)
subject: Nuclear Experiment (nucl-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Atomic nuclei lie at the core of everything visible; and at the first level of approximation, their atomic weights are simply the sum of the masses of all the neutrons and protons (nucleons) they contain. Each nucleon has a mass $m_N \approx 1\,{\rm GeV}\approx 2000$-times the electron mass. The Higgs boson -- discovered at the large hadron collider in 2012, a decade ago -- produces the latter, but what generates the nucleon mass? This is a pivotal question. The answer is widely supposed to lie within quantum chromodynamics (QCD), the strong-interaction piece of the Standard Model. Yet, it is far from obvious. In fact, removing Higgs-boson couplings into QCD, one arrives at a scale invariant theory, which, classically, can't support any masses at all. This contribution sketches forty years of developments in QCD, which suggest a solution to the puzzle, and highlight some of the experiments that can validate the picture.
description: 10 pages, 4 figures. Summary of a presentation at the 8th International Symposium on Symmetries in Subatomic Physics (SSP2022), Vienna, 2022 08/29 - 09/02