cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Investigation of the Nonlinear Optical Frequency Conversion in Ultrathin Franckeite Heterostructures
Creators: name: Cadore, Alisson R.
name: Ore, Alexandre S. M. V.
name: Steinberg, David
name: Zapata, Juan D.
name: de Souza, Eunézio A. T.
name: Bahamon, Dario A.
name: de Matos, Christiano J. S.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Optics (physics.optics)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Layered franckeite is a natural superlattice composed of two alternating layers of different compositions, SnS$_2$- and PbS-like. This creates incommensurability between the two species along the planes of the layers, resulting in spontaneous symmetry-break periodic ripples in the \textit{a}-axis orientation. Nevertheless, natural franckeite heterostructure has shown potential for optoelectronic applications mostly because it is a semiconductor with 0.7 eV bandgap, air-stable, and can be easily exfoliated down to ultrathin thicknesses. Here, we demonstrate that few-layer franckeite shows a highly anisotropic nonlinear optical response due to its lattice structure, which allow for the identification of the ripple axis. Moreover, we find that the highly anisotropic third-harmonic emission strongly varies with material thickness. These features are further corroborated by a theoretical nonlinear susceptibility model and the nonlinear transfer matrix method. Overall, our findings help to understand this material and propose a characterization method that could be used in other layered materials and heterostructures to assign their characteristic axes.
description: 27 pages, 5 figures. The following article has been accepted by the Journal of Applied Physics. After it is published, it will be found by DOI: 10.1063/5.0186615
THE SCHOOL OF GRADUATE STUDIES ARBA MINCH UNIVERSITY  IN PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE DEGREE OF MASTER OF SCIENCE IN IRRIGATION AND DRAINAGE ENGINEERING
Creators: name: Didace RWABITEGA
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2008

description: In Burundi, agriculture engages for approximatively 80% of the economically
active population and it remains a very important economic sector. In this part of
the world rainfed agriculture is largely dominant; food security and income of
rural populations are vulnerable to rainfall variability. Therefore, rainfall being an
important climatic factor in crop production, the main objective of this research
was to analyze the spatial and temporal variability of rainfall in Burundi.
For this purpose, 16 meteorological stations with 30 years of data record have
been used. Investigation of monthly, seasonal and annual rainfall variability using
different methods reveals that there is spatial variability of rainfall in Burundi.
Spatial analysis shows that the entire country can be classified into four
homogeneous zones depending upon their moisture availability index. The
results indicated that distribution of annual rainfall didn't show significant change
within the period considered. The seasonal variability analysis shows that the
temporal distribution of the
·
asons is variable from year to year. From
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monthly rainfall variabi ·
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alysis,·· ttie--1 nths of May, June, July, August,
September and Oct .' � a/;: characterized y high variability in rainfall data
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series indicating low eliability of r�,Lnfall: dy_ · g these periods. The remaining
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months of the years wed Iess-tomoderet variability. Another observation is 7. ............
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that rainfall variation in �afe����__tb.e·-t�Ef' comes shorter, i.e. the variability is
higher when evaluated on.�o'.a!bJY_Ji�rfthan on annual basis. Trend detection
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analysis conducted using Mann-Kendall non-parametric test on monthly rainfall
series with high variability showed negative trend indicating the decrease in
precipitation, but this trend was statistically significant for some months and
stations. Because of variability of rainfall in space within the study area, the
future research should increase the spatial coverage by including more number
of stations. Moreover, it is also suggested to extend the analysis to other time
scales such as daily or ten days period in order to see the effect of rainfall
variability over short time intervals on crop production. Further studies are also
recommended to predict the future monthly and seasonal distribution of rainfall.
title: ÐÐ±ÑÑÐµÐ½Ð¸Ðµ ÑÑÐ°Ð·ÐµÐ¾Ð»Ð¾Ð³Ð¸ÑÐµÑÐºÐ¾Ð¹ Ð»ÐµÐºÑÐ¸ÐºÐµ Ñ Ð¸ÑÐ¿Ð¾Ð»ÑÐ·Ð¾Ð²Ð°Ð½Ð¸ÐµÐ¼ Ð¿Ð¾Ð´Ñ Ð¾Ð´Ð¾Ð² ÐºÐ¾ÑÐ¿ÑÑÐ½Ð¾Ð¹ Ð»Ð¸Ð½Ð³Ð²Ð¸ÑÑÐ¸ÐºÐ¸ (Ð½Ð°Ð¿ÑÐ°Ð²Ð»ÐµÐ½Ð¸Ðµ Â«ÐÐ¸Ð½Ð³Ð²Ð¸ÑÑÐ¸ÐºÐ°Â»)
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð¼Ð°Ð³Ð¸ÑÑÑÐ°
titleType: Subtitle
Creators: name: ÐÐ¾Ð¼Ð°ÑÐ¾Ð²Ð°, ÐÑÐ¸Ð½Ð°
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: 2019
Subjects: Ð»Ð¸Ð½Ð³Ð²Ð¸ÑÑÐ¸ÐºÐ°
ÐºÐ¾ÑÐ¿ÑÑÐ½ÑÐ¹ Ð¿Ð¾Ð´Ñ Ð¾Ð´
Ð»ÐµÐºÑÐ¸ÐºÐ°
Ð½Ð¾ÑÐ¼Ð°ÑÐ¸Ð²Ð½ÑÐµ ÑÑÐ°Ð·ÐµÐ¾Ð»Ð¾Ð³Ð¸Ð·Ð¼Ñ
ÑÑÐ°Ð½ÑÑÐ¾ÑÐ¼Ð¸ÑÐ¾Ð²Ð°Ð½Ð½ÑÐµ ÑÑÐ°Ð·ÐµÐ¾Ð»Ð¾Ð³Ð¸Ð·Ð¼Ñ

description: ÐÐ°ÑÑÐ¾ÑÑÐ°Ñ ÑÐ°Ð±Ð¾ÑÐ° ÑÐ¾Ð´ÐµÑÐ¶Ð¸Ñ ÑÐµÐ·ÑÐ»ÑÑÐ°ÑÑ Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ñ Ð²Ð¾Ð·Ð¼Ð¾Ð¶Ð½Ð¾ÑÑÐµÐ¹ Ð¸ÑÐ¿Ð¾Ð»ÑÐ·Ð¾Ð²Ð°Ð½Ð¸Ñ Ð¿Ð¾Ð´ÑÐ¾Ð´Ð¾Ð² ÐºÐ¾ÑÐ¿ÑÑÐ½Ð¾Ð¹ Ð»Ð¸Ð½Ð³Ð²Ð¸ÑÑÐ¸ÐºÐ¸ Ð¿ÑÐ¸ Ð¾Ð±ÑÑÐµÐ½Ð¸Ð¸ ÑÑÑÐ´ÐµÐ½ÑÐ¾Ð²-Ð»Ð¸Ð½Ð³Ð²Ð¸ÑÑÐ¾Ð² ÑÑÐ°Ð·ÐµÐ¾Ð»Ð¾Ð³Ð¸ÑÐµÑÐºÐ¾Ð¹ Ð»ÐµÐºÑÐ¸ÐºÐµ Ð°Ð½Ð³Ð»Ð¸Ð¹ÑÐºÐ¾Ð³Ð¾ ÑÐ·ÑÐºÐ°. ÐÐ±ÑÑÐ¶Ð´Ð°ÐµÑÑÑ Ð²Ð°Ð¶Ð½Ð¾ÑÑÑ Ð¸Ð·ÑÑÐµÐ½Ð¸Ñ ÑÑÐ°Ð·ÐµÐ¾Ð»Ð¾Ð³Ð¸ÑÐµÑÐºÐ¾Ð¹ Ð»ÐµÐºÑÐ¸ÐºÐ¸ Ð´Ð»Ñ ÑÐ¾ÑÐ¼Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ Ð»Ð¸Ð½Ð³Ð²Ð¾ÐºÑÐ»ÑÑÑÑÐ¾Ð»Ð¾Ð³Ð¸ÑÐµÑÐºÐ¾Ð¹ ÐºÐ¾Ð¼Ð¿ÐµÑÐµÐ½ÑÐ¸Ð¸ ÑÑÑÐ´ÐµÐ½ÑÐ¾Ð². ÐÑÐµÐ´ÑÑÐ°Ð²Ð»ÐµÐ½Ð° ÐºÐ»Ð°ÑÑÐ¸ÑÐ¸ÐºÐ°ÑÐ¸Ñ Ð¸ Ð°Ð½Ð°Ð»Ð¸Ð· Ð°Ð½Ð³Ð»Ð¸Ð¹ÑÐºÐ¾Ð¹ ÑÑÐ°Ð·ÐµÐ¾Ð»Ð¾Ð³Ð¸Ð¸ Ñ Ð¸ÑÐ¿Ð¾Ð»ÑÐ·Ð¾Ð²Ð°Ð½Ð¸ÐµÐ¼ Ð´Ð°Ð½Ð½ÑÑ ÐºÐ¾ÑÐ¿ÑÑÐ° ÑÐ¾Ð²ÑÐµÐ¼ÐµÐ½Ð½Ð¾Ð³Ð¾ Ð°Ð½Ð³Ð»Ð¸Ð¹ÑÐºÐ¾Ð³Ð¾ ÑÐ·ÑÐºÐ° COCA, Ð° ÑÐ°ÐºÐ¶Ðµ ÑÐ°Ð·ÑÐ°Ð±Ð¾ÑÐ°Ð½ Ð¸ Ð¾Ð¿Ð¸ÑÐ°Ð½ ÐºÐ¾Ð¼Ð¿Ð»ÐµÐºÑ ÑÐ¿ÑÐ°Ð¶Ð½ÐµÐ½Ð¸Ð¹ ÐºÐ°Ðº Ð´Ð¾Ð¿Ð¾Ð»Ð½Ð¸ÑÐµÐ»ÑÐ½Ð¾Ðµ ÑÑÐµÐ´ÑÑÐ²Ð¾ ÑÐ¾ÑÐ¼Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ ÑÑÐ°Ð·ÐµÐ¾Ð»Ð¾Ð³Ð¸ÑÐµÑÐºÐ¸Ñ Ð½Ð°Ð²ÑÐºÐ¾Ð².
description: This masterâs thesis deals with the study of implementation of corpus linguistics approaches in teaching English phraseological lexis for students studying linguistics. The importance of studying phraseological lexis for the formation of studentsâ linguistic-cultural competence is discussed. Classification and analysis of English phraseology using Corpus of Contemporary American English (COCA) data is presented, as well as a complex of exercises as an additional means of forming phraseological skills is developed and described.
A Duoethnographic Exploration of Race and Gender: A Dialogue Between Female International Students in Canada
Creators: name: Barrantes, Lena
name: Ovie, Glory
Publisher: name: Alberta Journal of Educational Research
Year: 2021

description: The number of international students in Canadian universities has dramatically increased since 2000. International students are believed to contribute significantly to education and research, as they bring a rich variety of perspectives, experiences, and languages. However, international students should not be categorized into one homogenous group. In particular, international female PhD students have many different reasons to immigrate and undertake a rigorous academic program. Whether to pursue high academic goals, gain personal knowledge, develop research skills, or widen employment opportunities, each student carries a different cultural background that informs their decisions prior to their arrival, their transitions, their adjustments, and subsequently their participation in the new culture. Using a duoethnographic dialogical approach and ideas about bonding beyond race and culture, this article focused on the experiences of two female international PhD students from Costa Rica and Nigeria as we answered questions regarding the intersections between race and gender within our processes behind mobility to Canada. Key words: duoethnography, international students, race, culture, gender Le nombre d'étudiants étrangers dans les universités canadiennes a augmenté de façon spectaculaire depuis 2000. On estime que les étudiants étrangers contribuent de manière significative à l'éducation et à la recherche, car ils apportent une riche variété de perspectives, d'expériences et de langues. Cependant, les étudiants étrangers ne doivent pas être classés dans un groupe homogène. En particulier, les doctorantes internationales ont de nombreuses raisons différentes d'immigrer et d'entreprendre un programme universitaire rigoureux. Qu'il s'agisse de poursuivre des objectifs universitaires élevés, d'acquérir des connaissances personnelles, de développer des compétences en matière de recherche ou d'élargir les possibilités d'emploi, chaque étudiante possède un bagage culturel différent qui influence ses décisions avant son arrivée, ses transitions, ses ajustements et, par la suite, sa participation à la nouvelle culture. En utilisant une approche dialogique duoethnographique et des idées sur la création de liens au-delà de la race et de la culture, cet article porte sur les expériences de deux doctorantes internationales du Costa Rica et du Nigéria alors que nous répondions à des questions concernant les intersections entre la race et le genre dans nos processus qui sous-tendent le déplacement vers le Canada. Mots-clés : duoethnographie, étudiants internationaux, race, culture, genre.
description: Alberta Journal of Educational Research, Vol. 67 No. 2 (2021): Summer
Hydrological Modeling of  Lake Hawassa  Sub-basin  Using SW  AT  (Rift  Valley Basin, Ethiopia
Creators: name: Nebiyu  Solomon
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2011

description: n  recent  years,  distributed  watershed  models  are  increasingly  used  Water  resources  management
and  hydrologic  modeling  studies.  Even  though,  these  models  are  capable  of  better  representing
the  complex  natures  of  the  hydrological  processes  occurring  at  basin  scale,  they  suffer  from
different  types  of  uncertainties  in  the  predictions.  Hence,  it  is  essential  for  these  models  to  pass
through  a  careful  calibration  tests  and  uncertainty  analysis  for  gating  reliable  results.  This  study
is  about  hydrological  modeling  of the  Lake  Hawassa  sub-basin,  which  is  one  of the  fresh  closed
lakes  in  the  main  Ethiopian rift  valley  basin,  through  a basin  scale  distributed  hydrological  model
with  consideration  of  the  spatial  heterogeneity  of  hydrological characteristics  and  the  possible
uncertainties  in  modeling,  which  are  essential  for  obtaining  more  reliable  estimates  of  the
catchment  water  balance.
A  SWAT  model  has  been  applied  for  simulating  the  daily  water  balance  of the  catchment.  The
model  calibration  and  1:1r�_cert_c1in��  analysis,  validation  was  done  using  SUFI-2.  The  uncertainty
analysis  process  has  provide  good  fit  with  acceptable  range  NS  and  R
2
values  and  it  was  possible
to  bracket  about  76%  of  the  measured  data  at  95PPU  range,  through  which  all  ' source  of
uncertainties  are  reflected.  The  base  flow  is  the  dominant  component  of  the  stream  flow,
contributing  more  than  the  surface  runoff and  Lateral  flow.  And  almost  78%  or  the  rainfall  over
the  catchment  is  lost  through  evapotranspiration.  Finally  a  Spread  sheet  model  was  used  for
simulation  of  the  monthly  water  balance  of  the  lake.  The  average  annual  of  open  water
evaporation  from  the  lake  surface  is  163  MCM  per  year,  Areal  rainfall  127  MCM  per  year,
surface  runoff  from  Lake  Catchment  143  MCM per  year.
RECONSTRUCTION OF FLOW REGIMES OF BORKENA CATCHMENT FOR IRRIGATION DEVELOPMENT USING RAINFALL-RUNOFF MODELINGRAINFALL - RUNOFF MODELING
Creators: name: MEZGEBU MEWDED
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2008

description: The main objective of the research is to reconstruct flow regimes of Borkena
catchment in ungauged locations for irrigation development using rainfall-runoff were used to test the hydrological response of the Borkena catchment.
based Linearly Varying Gain Factor Model, and the Artificial Neural Network
Model, along with the conceptual Soil Moisture Accounting and Routing Model,
modeling. Four black-box-type rainfall-runoff models, namely, the Simple Linear
Model, the seasonally based Linear Perturbation Model, the wetness-index­The performance of these hydrological models for the study area was tested
and the best candidate model for the catchment response prediction was selected. Artificial neural network model was selected as a robust rainfall-runoff
model to obtain the estimated flow of the gauged station which is the basis to transfer flow data to ungauged sites on the catchment. The R2 during calibration and verification was 97.57% and 91.30% respectivelyOn the basis of the selected model 15 days 75% dependable flow derived from
the flow duration was used as the basis of estimating dependable low flows at ungauged locations of the catchment using area ratio method of transferring flows.
Radiative, magnetic and numerical feedbacks on small-scale fragmentation
Creators: name: Commercon, Benoit
name: Hennebelle, Patrick
name: Audit, Edouard
name: Chabrier, Gilles
name: Teyssier, Romain
Publisher: name: arXiv
Year: 2010
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Radiative feedback and magnetic field are understood to have a strong impact on the protostellar collapse. We present high resolution numerical calculations of the collapse of a 1 solar mass dense core in solid body rotation, including both radiative transfer and magnetic field. Using typical parameters for low-mass cores, we study thoroughly the effect of radiative transfer and magnetic field on the first core formation and fragmentation. We show that including the two aforementioned physical processes does not correspond to the simple picture of adding them separately. The interplay between the two is extremely strong, via the magnetic braking and the radiation from the accretion shock.
description: 4 pages, 2 figures ; to appear in "IAU Symposium 270: Computational Star formation", Eds. J. Alves, B. Elmegreen, J. Girart, V. Trimble
Towards Efficient Fine-tuning of Large Language Models
Creators: name: Jin, Hongpeng
name: Wu, Yanzhao
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
On the unreasonable effectiveness of the post-Newtonian approximation in gravitational physics
Creators: name: Will, Clifford M.
Publisher: name: arXiv
Year: 2011
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The post-Newtonian approximation is a method for solving Einstein's field equations for physical systems in which motions are slow compared to the speed of light and where gravitational fields are weak. Yet it has proven to be remarkably effective in describing certain strong-field, fast-motion systems, including binary pulsars containing dense neutron stars and binary black hole systems inspiraling toward a final merger. The reasons for this effectiveness are largely unknown. When carried to high orders in the post-Newtonian sequence, predictions for the gravitational-wave signal from inspiraling compact binaries will play a key role in gravitational-wave detection by laser-interferometric observatories.
description: 9 pages, 2 figures, submitted to Proceedings of the National Academy of Sciences (US)
Enacting Relational Leadership Through Restorative Practices
Creators: name: Webb, Owen
Publisher: name: Alberta Journal of Educational Research
Year: 2021

description: A restorative approach to education emphasizes that educators play a critical role in building relationships amongst school stakeholders. This case study examined the four-year journey of leading a school to implement and sustain a restorative culture. A theoretical framework for restorative practices was established around relational leadership theory and dialogue, providing the foundation for this research. The research addressed the need for studying the leading of restorative culture change from a relational perspective, while highlighting the need for leadership to establish spaces, processes, attitudes, language, and questions for establishing effective dialogue to initiate the building and sustaining of effective relations. Although the restorative culture was described by some as “diluted” by the end of the initiative, it was evident that restorative practices remained integral to the daily educational practices as a result of the four-year initiative by school leadership to integrate restorative approaches into daily practices. Key words: relational leadership, restorative practices, school culture, dialogue Une approche réparatrice de l'éducation souligne que les éducateurs jouent un rôle essentiel dans l'établissement de relations entre les parties prenantes de l'école. Cette étude de cas examine le parcours de quatre ans de la direction d'une école pour mettre en œuvre et maintenir une culture réparatrice. Un cadre théorique pour les pratiques réparatrices a été établi autour de la théorie du leadership relationnel et du dialogue, ce qui constitue le fondement de cette recherche. La recherche a répondu au besoin d'étudier la gestion du changement de la culture réparatrice d'un point de vue relationnel, tout en soulignant la nécessité pour le leadership d'établir des espaces, des processus, des attitudes, un langage et des questions pour établir un dialogue efficace afin d'initier la construction et le maintien de relations efficaces. Bien que la culture réparatrice ait été décrite par certains comme "diluée" à la fin de l'initiative, il était évident que les pratiques réparatrices restaient partie intégrante des pratiques éducatives quotidiennes suite à l'initiative de quatre ans de la direction de l'école pour intégrer les approches réparatrices dans les pratiques quotidiennes. Mots-clés : leadership relationnel, pratiques réparatrices, culture scolaire, dialogue
description: Alberta Journal of Educational Research, Vol. 67 No. 2 (2021): Summer
Continuing to Make Sense of a Narrative Conception of Hope
Creators: name: LeMay, Lenora M.
Publisher: name: Alberta Journal of Educational Research
Year: 2021

description: In this autobiographical narrative inquiry, I continued to make sense of a Deweyan-inspired narrative conception of hope (LeMay, 2014). I started with a remembered story that occurred on a First Nation shortly after I commenced working at a post-secondary institution. Following that, I shared stories that led me to wonder about a Deweyan-inspired narrative conception of hope and then what I learned in a dissertation with two teachers as we worked with a Deweyan-inspired narrative conception of hope. From there, I unpacked the remembered story, using the three learnings that resonated in my sensemaking with the two teachers. Lastly, I reflected on how this inquiry inspired me to continue to make sense of students’ storied experiences of working with a narrative pedagogy of hope (LeMay, 2014) in relation to their well-being. Key words: a narrative conception of hope, narrative inquiry, autobiographical narrative inquiry, hope-focused practices and strategies, making hope visible and accessible Dans cette enquête narrative autobiographique, j'ai continué à donner du sens à une conception narrative de l'espoir inspirée par Dewey (LeMay, 2014). J'ai commencé par me souvenir d'une histoire qui s'est produite sur une Première Nation peu après que j'ai commencé à travailler dans un établissement postsecondaire. Ensuite, j'ai partagé les histoires qui m'ont amenée à m'interroger sur une conception narrative de l'espoir inspirée par Dewey, puis ce que j'ai appris dans le cadre d'une dissertation avec deux enseignants alors que nous travaillions avec une conception narrative de l'espoir inspirée par Dewey. Ensuite, j'ai décortiqué l'histoire dont je me souviens en utilisant les trois apprentissages qui ont résonné dans ma recherche de sens avec les deux enseignants. Enfin, j'ai réfléchi à la façon dont cette enquête m'a inspirée pour continuer à donner du sens aux expériences narratives des élèves qui travaillent avec une pédagogie narrative de l'espoir (LeMay, 2014) en relation avec leur bien-être. Mots-clés : une conception narrative de l'espoir, une enquête narrative, une enquête narrative autobiographique, des pratiques et des stratégies axées sur l'espoir, rendre l'espoir visible et accessible
description: Alberta Journal of Educational Research, Vol. 67 No. 2 (2021): Summer
Calibration and performance of the photon-counting detectors for the Ultraviolet Imaging Telescopes (UVIT) of the Astrosat observatory
Creators: name: Postma, J.
name: Hutchings, J. B.
name: Leahy, D.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: We describe calibration data, and discuss performance of the photon-counting flight detectors for the Ultraviolet Imaging Telescopes on the Astrosat observatory. The paper describes dark current, flat field and light-spot images for FUV, NUV, and Visible band detectors at more than one wavelength setting for each. We also report on nominal gain and low-gain operations, full- and sub-window read rates, and non-photon-counting modes of operation, all expected to be used in flight. We derive corrections to the event centroids from the CMOS readout arrays, for different centroid algorithms. We derive spatial resolution values for each detector and plots of point-source signal saturation for different flux levels. We also discuss ways to correct for saturation in extended object images.
description: 27 pages, including 4 tables. 14 Figures. To be published in PASP
Note on Bonus Relations for N=8 Supergravity Tree Amplitudes
Creators: name: He, Song
name: Nandan, Dhritiman
name: Wen, Congkao
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the application of non-trivial relations between gravity tree amplitudes, the bonus relations, to all tree-level amplitudes in N=8 supergravity. We show that the relations can be used to simplify explicit formulae of supergravity tree amplitudes, by reducing the known form as a sum of (n-2)! permutations obtained by solving on-shell recursion relations, to a new form as a (n-3)!-permutation sum. We demonstrate the simplification by explicit calculations of the next-to-maximally helicity violating (NMHV) and next-to-next-to-maximally helicity violating (N^2MHV) amplitudes, and provide a general pattern of bonus coefficients for all tree-level amplitudes.
description: 21 pages, 9 figures; v2, minor changes, references added
PRIORITIZATION OF SUB-WATERSHEDS FOR  WATERSHED MANAGEMENT  USING SWAT  MODEL AND GIS TECHNIQUES:  A  Case study on Gilgel· Abbay Watershed, Lake Tana basin, Ethiopia
Creators: name: AYANAW MALEDE ABERA
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2011

description: Gilgel-  Abbay  watershed  which  is  one  of the  sub  basins  of  the  Lake  Tana  is  known  to  be  severely
affected  by  water  erosion.  This  has  been resulting  in  decline  of the  land  productivity  in  the  watershed
and  excessive  sedimentation  on  downstream  areas  that  is  a  serious  concern  for  the  sustainability  of
the  three  large  irrigation projects  proposed in  the  watershed by  huge  investment.
To  reverse  the  above  concerns,  appropriate  watershed  management  is  urgently  needed  in  the  entire
watershed.  However,  as  it  is  difficult  and  economically  not  feasible  to  consider  all  areas  under  the
threat  of  erosion  at  once,  prioritization  of  sub  watersheds  is  required  to  address  few  critical  sub
watersheds  at  a  time.  Therefore,  the  main  objective  of  this  study  was  prioritization  of sub  watersheds
of the  Gilgel-Abbay watershed  on  the  basis  of sediment  yield for  watershed management.
Soil and  Water Assessment Tool (SWAT)  model that  embodied  with Geographic  Information  System
(GIS)  was  used  to  simulate  stream  flow and  sediment  yield  of the  watershed.  The  simulations  of the
model  were  calibrated  and  validated  against  measured  data  of  stream  flow  and  sediment  yield.  Both
the  calibration  and  validation  results  showed  good  match  between  measured  and  model  predictions.
To  this  end,  the  average  annual  sediment  yield  of  the  watershed  was  estimated  to  be  26ton/ha/yr.
However,  the  spatial  patterns  of  sediment  yield  vary  within  the  watershed,  with  maximum  value  of
95ton/ha/yr.  Based  on  the  category  assigned  to  the  sediment  yield,  sub  watersheds  were  categorized
in  to  five  watershed  management  priority  categories.  Out  of  the  total  49  sub  watersheds,  4  sub
watersheds  (7. 8%)  with  sediment  yield  of  60  to  95  ton/ha/yr  fall  under  extremely  high  priority
category.  Eight  sub  watersheds  (18%)  with  sediment  yield  of  30  to  60  ton/ha/yr  fall  under  very  high
priority  category.  Sixteen sub  watersheds  (36.6%)  with  sediment  yield  of  15  to  30ton/ha/yr  fall  under
high priority  category.  Eleven sub  watersheds  (23. 9%)  with sediment  yield of  9  to15ton/ha/yr  and  ten
sub  watersheds  (12 . 70%) with sediment  yield  of Oto  9 ton/ha/yr  are  categorized as  medium and  low
priority  sub  watersheds, respectively.
Therefore,  detail  watershed  management  plan  need  to  be  developed  at  manageable  size  of  sub
watersheds  and  immediate  action  is  required  to  be  taken  with high  emphasis  to  areas  showing  higher
sediment  yield  to  control  the  existing  accelerated  erosion  in  the  watershed  and  for  reducing
sedimentation on  reservoirs  and  downstream areas.
School Selection for Their Children in Canada: What Do Chinese Parent-Students Consider?
Creators: name: Ho, Sonia Wai-Ying
name: Zhou, George
Publisher: name: Alberta Journal of Educational Research
Year: 2021

description: In recent years, more and more Chinese students have come to Canada for their education. Some of them are parents, and they bring their children with them. Using a multiple case study design, this study explored these international parent-students in regards to how they select schools for their children. Six participants were recruited. Data were collected through semi-structured interviews. Data analysis reveals that participants viewed school selection for their children as their responsibility and thus they were highly engaged in the process. No significant challenges arose in the process of school selection as parents adopted different strategies. Participants considered five key factors when selecting schools for their children, including peers’ family background, school rank, language of instruction, impression of the teachers, and parents’ religious background. These factors were shaped by the Chinese culture, the participants’ class identity, and their anxiety and expectations towards their children’s future. Key words: International parent-student, parental involvement, school selection, social class identity Ces dernières années, de plus en plus d'étudiants chinois sont venus au Canada pour y faire leurs études. Certains d'entre eux sont des parents, et ils amènent leurs enfants avec eux. À l'aide d'un modèle d'étude de cas multiples, cette étude s'est intéressée à ces parents-étudiants internationaux et à la façon dont ils choisissent les écoles pour leurs enfants. Six participants ont été recrutés. Les données ont été recueillies par le biais d'entretiens semi-structurés. L'analyse des données révèle que les participants considèrent le choix de l'école pour leurs enfants comme leur responsabilité et qu'ils sont donc très engagés dans le processus. Aucun défi significatif ne s’est présenté au cours du processus de sélection des écoles, les parents ayant adopté différentes stratégies. Les participants ont pris en compte cinq facteurs clés lors du choix de l'école de leurs enfants, à savoir le milieu familial des pairs, le classement de l'école, la langue d'enseignement, l'impression des enseignants et l'appartenance religieuse des parents. Ces facteurs ont été façonnés par la culture chinoise, l'identité de classe des participants, ainsi que leur anxiété et leurs attentes quant à l'avenir de leurs enfants. Mots-clés : parent-étudiant international, implication des parents, choix de l'école, identité de classe sociale
description: Alberta Journal of Educational Research, Vol. 67 No. 2 (2021): Summer
Stochastic matrix metapopulation models with fast migration: re-scaling survival to the fast scale
Creators: name: Sanz, Luis
name: de la Parra, Rafael Bravo
Publisher: name: arXiv
Year: 2024
Subjects: subject: Populations and Evolution (q-bio.PE)
subject: Dynamical Systems (math.DS)
subject: FOS: Biological sciences
subject: FOS: Mathematics

description: In this work we address the analysis of discrete-time models of structured metapopulations subject to environmental stochasticity. Previous works on these models made use of the fact that migrations between the patches can be considered fast with respect to demography (maturation, survival, reproduction) in the population. It was assumed that, within each time step of the model, there are many fast migration steps followed by one slow demographic event. This assumption allowed one to apply approximate reduction techniques that eased the model analysis. It is however a questionable issue in some cases since, in particular, individuals can die at any moment of the time step. We propose new non-equivalent models in which we re-scale survival to consider its effect on the fast scale. We propose a more general formulation of the approximate reduction techniques so that they also apply to the proposed new models. We prove that the main asymptotic elements in this kind of stochastic models, the Stochastic Growth Rate (SGR) and the Scaled Logarithmic Variance (SLV), can be related between the original and the reduced systems, so that the analysis of the latter allows us to ascertain the population fate in the first. Then we go on to considering some cases where we illustrate the reduction technique and show the differences between both modelling options. In some cases using one option represents exponential growth, whereas the other yields extinction.
THE EFFECTIVENESS OF TASK-BASED LANGUAGE TEACHING
Creators: name: Ilyasova, Gulkhumar
Publisher: name: Zenodo
Year: 2024

description: Task-Based Language Teaching (TBLT) is a learner-centered approach that emphasizes the use of meaningful tasks to promote real-life communication and language acquisition. This article explores the effectiveness of TBLT, highlighting its key benefits, such as improving communicative competence, enhancing learner motivation, and fostering critical thinking and problem-solving skills. The article also outlines practical applications of TBLT, offering strategies for effective task design, integration of technology, and task-based assessment. Despite its challenges, TBLT remains a powerful tool for developing linguistic proficiency and preparing learners for real-world communication when implemented with careful planning and adaptation to learners’ needs.
title: Ð­Ð»ÐµÐºÑÑÐ¾Ð½Ð½Ð°Ñ ÐºÐ¾Ð¼Ð¼ÐµÑÑÐ¸Ñ Ð¼ÐµÐ¶Ð´Ñ ÐÐ¸ÑÐ°ÐµÐ¼ Ð¸ Ð Ð¾ÑÑÐ¸ÐµÐ¹ Ð² ÑÐ°Ð¼ÐºÐ°Ñ Ð¿ÑÐ¾Ð³ÑÐ°Ð¼Ð¼Ñ âÐÐ´Ð¸Ð½ Ð¿Ð¾ÑÑ - ÐÐ´Ð¸Ð½ Ð¿ÑÑÑâ
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð¼Ð°Ð³Ð¸ÑÑÑÐ° Ð¿Ð¾ Ð½Ð°Ð¿ÑÐ°Ð²Ð»ÐµÐ½Ð¸Ñ 41.04.01 - ÐÐ°ÑÑÐ±ÐµÐ¶Ð½Ð¾Ðµ ÑÐµÐ³Ð¸Ð¾Ð½Ð¾Ð²ÐµÐ´ÐµÐ½Ð¸Ðµ ; 41.04.01_03 - Ð Ð¾ÑÑÐ¸Ð¹ÑÐºÐ°Ñ Ð¤ÐµÐ´ÐµÑÐ°ÑÐ¸Ñ (Ð¼ÐµÐ¶Ð´ÑÐ½Ð°ÑÐ¾Ð´Ð½Ð°Ñ Ð¾Ð±ÑÐ°Ð·Ð¾Ð²Ð°ÑÐµÐ»ÑÐ½Ð°Ñ Ð¿ÑÐ¾Ð³ÑÐ°Ð¼Ð¼Ð°)
titleType: Subtitle
Creators: name: Ð§Ð¶Ð°Ð½ Ð¦Ð·ÑÑÐ¾
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: 2019
Subjects: ÐÐ¸ÑÐ°Ð¹
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ÑÐ»ÐµÐºÑÑÐ¾Ð½Ð½Ð°Ñ ÐºÐ¾Ð¼Ð¼ÐµÑÑÐ¸Ñ
ÑÐ»ÐµÐºÑÑÐ¾Ð½Ð½Ð°Ñ ÑÐ¾ÑÐ³Ð¾Ð²Ð»Ñ

description: Ð ÑÑÐ¾Ð¹ ÑÐ°Ð±Ð¾ÑÐµ Ð¾Ð¿Ð¸ÑÑÐ²Ð°ÑÑÑÑ ÑÐµÐ¾ÑÐ¸Ð¸ Ð¸ Ð¾Ð±Ð·Ð¾Ñ ÑÐ°Ð·Ð²Ð¸ÑÐ¸Ñ, ÑÐ²ÑÐ·Ð°Ð½Ð½ÑÐµ Ñ ÑÐ»ÐµÐºÑÑÐ¾Ð½Ð½Ð¾Ð¹ ÑÐ¾ÑÐ³Ð¾Ð²Ð»ÐµÐ¹, Ð²ÐºÐ»ÑÑÐ°Ñ ÐºÐ¾Ð½ÑÐµÐ¿ÑÐ¸Ñ ÑÐ»ÐµÐºÑÑÐ¾Ð½Ð½Ð¾Ð¹ ÑÐ°Ð·ÑÐ°Ð±Ð¾ÑÐºÐ¸ Ð¸ ÑÐ°ÑÐ°ÐºÑÐµÑÐ¸ÑÑÐ¸ÐºÐ¸ ÐºÐ»Ð°ÑÑÐ¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¸ ÑÐ»ÐµÐºÑÑÐ¾Ð½Ð½Ð¾Ð¹ ÐºÐ¾Ð¼Ð¼ÐµÑÑÐ¸Ð¸, Ð° ÑÐ°ÐºÐ¶Ðµ Ð¿ÑÐµÐ¸Ð¼ÑÑÐµÑÑÐ²Ð° Ð¾Ð±Ð»Ð°ÑÑÐµÐ¹ Ð¿ÑÐ¸Ð¼ÐµÐ½ÐµÐ½Ð¸Ñ ÑÐ»ÐµÐºÑÑÐ¾Ð½Ð½Ð¾Ð¹ ÐºÐ¾Ð¼Ð¼ÐµÑÑÐ¸Ð¸ Ð¸ Ð¸Ñ Ð²Ð»Ð¸ÑÐ½Ð¸Ðµ. Ð¸Ð·ÑÑÐ°ÐµÑ ÑÐ°Ð·Ð²Ð¸ÑÐ¸Ðµ, Ð¿ÑÐ¾Ð±Ð»ÐµÐ¼Ñ ÑÐ¾ÑÑÐ¸Ð¹ÑÐºÐ¾Ð¹ ÑÐ»ÐµÐºÑÑÐ¾Ð½Ð½Ð¾Ð¹ ÐºÐ¾Ð¼Ð¼ÐµÑÑÐ¸Ð¸ Ð¸ ÑÑÐ°Ð²Ð½Ð¸Ð²Ð°ÐµÑ Ñ ÐÐ¸ÑÐ°ÐµÐ¼.
description: This work describes e-Commerce related theories and development overview, including e-Commerce concept and development e-Commerce classification characteristics and advantages e-Commerce application areas and the resulting impact. studies the development, problems of Russian e-Commerce and make a compare with China.
Considerations for the Accurate Measurement of Incident Photon to Current Efficiency in Photoelectrochemical Cells
Creators: name: Ellis, David S.
name: Piekner, Yifat
name: Grave, Daniel A.
name: Schnell, Patrick
name: Rothschild, Avner
Publisher: name: Technische Universität Berlin
Year: 2022
Subjects: subject: 540 Chemie und zugeordnete Wissenschaften
subject: IPCE
subject: EQE
subject: photoelectrochemical
subject: device characterisation
subject: measurement technique

description: In this paper we review some of the considerations and potential sources of error when conducting Incident Photon to Current Efficiency (IPCE) measurements, with focus on photoelectrochemical (PEC) cells for water splitting. The PEC aspect introduces challenges for accurate measurements often not encountered in dry PV cells. These can include slow charge transfer dynamics and, depending on conditions (such as a white light bias, which is important for samples with non-linear response to light intensity), possible composition changes, mostly at the surface, that a sample may gradually undergo as a result of chemical interactions with the aqueous electrolyte. These can introduce often-overlooked dependencies related to the timing of the measurement, such as a slower measurement requirement in the case of slow charge transfer dynamics, to accurately capture the steady-state response of the system. Fluctuations of the probe beam can be particularly acute when a Xe lamp with monochromator is used, and longer scanning times also allow for appreciable changes in the sample environment, especially when the sample is under realistically strong white light bias. The IPCE measurement system and procedure need to be capable of providing accurate measurements under specific conditions, according to sample and operating requirements. To illustrate these issues, complications, and solution options, we present example measurements of hematite photoanodes, leading to the use of a motorized rotating mirror stage to solve the inherent fluctuation and drift-related problems. For an example of potential pitfalls in IPCE measurements of metastable samples, we present measurements of BiVO4 photoanodes, which had changing IPCE spectral shapes under white-light bias.
Lightweight Service Oriented Architecture for Pervasive Computing
Creators: name: Tigli, Jean-Yves
name: Lavirotte, Stephane
name: Rey, Gaetan
name: Hourdin, Vincent
name: Riveill, Michel
Publisher: name: arXiv
Year: 2011
Subjects: subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: Pervasive computing appears like a new computing era based on networks of objects and devices evolving in a real world, radically different from distributed computing, based on networks of computers and data storages. Contrary to most context-aware approaches, we work on the assumption that pervasive software must be able to deal with a dynamic software environment before processing contextual data. After demonstrating that SOA (Service oriented Architecture) and its numerous principles are well adapted for pervasive computing, we present our extended SOA model for pervasive computing, called Service Lightweight Component Architecture (SLCA). SLCA presents various additional principles to meet completely pervasive software constraints: software infrastructure based on services for devices, local orchestrations based on lightweight component architecture and finally encapsulation of those orchestrations into composite services to address distributed composition of services. We present a sample application of the overall approach as well as some relevant measures about SLCA performances.
description: Available online at http://ijcsi.org
Teacher Professional Learning, Culturally Responsive/Sustaining Practices, and Indigenous Students’ Success: A Comparative Case-Study of New Zealand and Saskatchewan, Canada
Creators: name: Papp, Theresa
name: Cottrell, Michael
Publisher: name: Alberta Journal of Educational Research
Year: 2021

description: Employing a multiple instrumental case study approach, we document and analyze initiatives in Saskatchewan and New Zealand to enhance cultural responsiveness among White educators through professional learning initiatives undertaken as part of broader strategies to animate more equitable educational outcomes for Indigenous students. The findings of this research confirm the capacity of teachers to act as agents of change and highlight the potential of teacher professional learning to catalyze educational reform and innovation, ensuring that schools can indeed benefit students who have historically been underserved by public education. We conclude that the growing Indigenous presence in classrooms is a powerful driver of innovation, which offers the potential to transform curriculum, pedagogy, and teacher-student relationships for the benefit of all learners in these contexts and beyond. Key words: Indigenous students, teacher professional learning, culturally-responsive pedagogy, Saskatchewan, New Zealand En utilisant une approche d'étude de cas instrumentale multiple, nous documentons et analysons des initiatives en Saskatchewan et en Nouvelle-Zélande visant à améliorer la sensibilité culturelle des enseignants blancs par le biais d'initiatives d'apprentissage professionnel entreprises dans le cadre de stratégies plus larges visant à produire des résultats éducatifs plus équitables pour les étudiants autochtones. Les résultats de cette recherche confirment la capacité des enseignants à agir en tant qu'agents de changement et soulignent le potentiel de l'apprentissage professionnel des enseignants à catalyser la réforme et l'innovation en matière d'éducation, garantissant ainsi que les élèves qui ont historiquement été mal desservis par l'éducation publique peuvent effectivement profiter des écoles. Nous concluons que la présence croissante des autochtones dans les salles de classe est un puissant moteur d'innovation qui offre la possibilité de transformer les programmes d'études, la pédagogie et les relations entre enseignants et élèves au profit de tous les apprenants dans ces contextes et au-delà. Mots-clés: élèves autochtones, apprentissage professionnel des enseignants, pédagogie adaptée à la culture, Saskatchewan, Nouvelle-Zélande
description: Alberta Journal of Educational Research, Vol. 67 No. 2 (2021): Summer
Comment on the equivalence of Bakamjian-Thomas mass operators in different forms of dynamics
Creators: name: Polyzou, W. N.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We discuss the scattering equivalence of the generalized Bakamjian-Thomas construction of dynamical representations of the Poincaré group in all of Dirac's forms of dynamics. The equivalence was established by Sokolov in the context of proving that the equivalence holds for models that satisfy cluster separability. The generalized Bakamjian Thomas construction is used in most applications, even though it only satisfies cluster properties for systems of less than four particles. Different forms of dynamics are related by unitary transformations that remove interactions from some infinitesimal generators and introduce them to other generators. These unitary transformation must be interaction dependent, because they can be applied to a non-interacting generator and produce an interacting generator. This suggests that these transformations can generate complex many-body forces when used in many-body problems. It turns out that this is not the case. In all cases of interest the result of applying the unitary scattering equivalence results in representations that have simple relations, even though the unitary transformations are dynamical. This applies to many-body models as well as models with particle production. In all cases no new many-body operators are generated by the unitary scattering equivalences relating the different forms of dynamics. This makes it clear that the various calculations used in applications that emphasize one form of the dynamics over another are equivalent. Furthermore, explicit representations of the equivalent dynamical models in any form of dynamics are easily constructed. Where differences do appear is when electromagnetic probes are treated in the one-photon exchange approximation. This approximation is different in each of Dirac's forms of dynamics.
description: 6 pages, no figures
Threshold resummation beyond leading eikonal level
Creators: name: Grunberg, Georges
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The modified evolution equation for parton distributions of Dokshitzer, Marchesini and Salam is extended to non-singlet Deep Inelastic Scattering coefficient functions and the physical evolution kernels which govern their scaling violation. Considering the x->1 limit, it is found that the leading next-to-eikonal logarithmic contributions to the momentum space physical kernels at any loop order can be expressed in term of the one loop cusp anomalous dimension, a result which can presumably be extended to all orders in (1-x). Similar results hold for fragmentation functions in semi-inclusive e^{+}e^{-} annihilation. The method does not work for subleading next-to-eikonal logarithms, but, in the special case of the F_1 and F_T structure and fragmentation functions, there are hints of the possible existence of an underlying Gribov-Lipatov like relation.
description: 6 pages; to appear in the Proceedings of DIS 2010, XVIII International Workshop on Deep-Inelastic Scattering and Related Subjects, April 2010, Firenze, Italy
Matrix-Variate Statistical Distributions and Fractional Calculus
Creators: name: Mathai, A. M.
name: Haubold, H. J.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: 15A15, 15A52, 33C60, 33E12, 44A20, 62E15

description: A connection between fractional calculus and statistical distribution theory has been established by the authors recently. Some extensions of the results to matrix-variate functions were also considered. In the present article, more results on matrix-variate statistical densities and their connections to fractional calculus will be established. When considering solutions of fractional differential equations, Mittag-Leffler functions and Fox H-function appear naturally. Some results connected with generalized Mittag-Leffler density and their asymptotic behavior will be considered. Reference is made to applications in physics, particularly superstatistics and nonextensive statistical mechanics.
description: 20 pages, LaTeX
Modeling the early transmission of COVID-19 in New York and San Francisco using a pairwise network model
Creators: Shanshan Feng
Xiao-Feng Luo
Xin Pei
Zhen Jin
Mark Lewis
Hao Wang
Publisher: name: University of Alberta Library
Year: 2022

Classical epidemiological models assume mass action. However, this assumption is

violated when interactions are not random. With the recent COVID-19 pandemic, and

resulting shelter in place social distancing directives, mass action models must be modified

to account for limited social interactions. In this paper we apply a pairwise network model

with moment closure to study the early transmission of COVID-19 in New York and San

Francisco and to investigate the factors determining the severity and duration of outbreak

in these two cities. In particular, we consider the role of population density, transmission

rates and social distancing on the disease dynamics and outcomes. Sensitivity analysis

shows that there is a strongly negative correlation between the clustering coefficient in the

pairwise model and the basic reproduction number and the effective reproduction number. The shelter in place policy makes the clustering coefficient increase thereby reducing

the basic reproduction number and the effective reproduction number. By switching

population densities in New York and San Francisco we demonstrate how the outbreak

would progress if New York had the same density as San Francisco and vice-versa. The

results underscore the crucial role that population density has in the epidemic outcomes.

We also show that under the assumption of no further changes in policy or transmission

dynamics not lifting the shelter in place policy would have little effect on final outbreak

size in New York, but would reduce the final size in San Francisco by 97%.
Leveraging Machine Learned Interatomic Potentials to Predict Materials Synthesis Routes
Creators: name: Spotte-Smith, Evan
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