cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
GRMHD Simulations and Modeling for Jet Formation and Acceleration Region in AGNs
Creators: name: Mizuno, Yosuke
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Relativistic jets are collimated plasma outflows with relativistic speeds. Astrophysical objects involving relativistic jets are a system comprising a compact object such as a black hole, surrounded by rotating accretion flows, with the relativistic jets produced near the central compact object. The most accepted models explaining the origin of relativistic jets involve magnetohydrodynamic (MHD) processes. Over the past few decades, many general relativistic MHD (GRMHD) codes have been developed and applied to model relativistic jet formation in various conditions. This short review provides an overview of the recent progress of GRMHD simulations in generating relativistic jets and their modeling for observations.
description: 23 pages, 7 figures, Short invited review to appear in Universe, special issue "Universe: Feature Papers - Compact Objects"
Three-dimensional N=4 supersymmetry in harmonic N=3 superspace
Creators: name: Zupnik, B. M.
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider the map of three-dimensional N=4 superfields to N=3 harmonic superspace. The left and right representations of the N=4 superconformal group are constructed on N=3 analytic superfields. These representations are convenient for the description of N=4 superconformal couplings of the Abelian gauge superfields with hypermultiplets. We analyze the N=4 invariance in the non-Abelian N=3 Yang-Mills theory.
description: Latex file, 22 pages; v2 two references added
An ultra-broadband electromagnetically indefinite medium formed by aligned carbon nanotubes
Creators: name: Nefedov, Igor
name: Tretyakov, Sergei
name: Simovski, Constantin
Publisher: name: arXiv
Year: 2011
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences
subject: 78A48

description: Anisotropic materials with different signs of components of the permittivity tensor are called indefinite materials. Known realizations of indefinite media suffer of high absorption losses. We show that periodic arrays of parallel carbon nanotubes (CNTs) can behave as a low-loss indefinite medium in the infrared range. We show that a finite-thickness slab of CNTs supports the propagation of backward waves with small attenuation in an ultra-broad frequency band. In prospective, CNT arrays can be used for subwavelength focusing and detection, enhancing the radiation efficiency of small sources.
description: 4 pages
PERFORMANCE  EVALUATION  OF  GOBA  TOWN  WATER  SUPPLY  DISTRIBUTION SYSTEM OROMIA REGIONAL STATE, ETHIOPIA
Creators: name: ABOMA TARESSA SHONE
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2017

description: Goba  is  a  town  found  in Oromia regional states of  Ethiopia, which is  south  of east  from the
capital, Addis Ababa which was established in 1962. The existing water distribution network
of Goba town was designed and constructed in 1984, where the population was about 22,963.
Now  the  population  is  doubled  to  44,622,  whereas  the  water  distribution  network  remains
unchanged. Shortage of water supplies for the recent two years and intermittent water supply
on  the rainy   season  (due to siltation)  were  one of the major challenges facing Goba town.
This  study  aimed  at  evaluating  the  performance  of  water  supply  distribution  system,  the
existing  water supply coverage of the town and  water  losses.  The data used includes, annual
water production and consumption,  surveying  data and geometrical properties of pipes from
design.  For  the  data  analysis,  AWWA  water  audit  and  EPANET2.0  software’s  were  used.
Discussions  were  made  with  local  experts  and  communities  to  support  the  qualitative
analysis.  From  the result of the analysis, it was  observed that the total  water loss in  Goba
town water  supply distribution system  is moderate  reaches up  to 29.1%  of the  total  system
input  volume  and  about  27.3%  of  the  total  system  loss  is  real  losses  and  0.4%  apparent
losses.  Besides,  the  average  daily  per  capita  water  consumption  of  the  town  is  23
liters/person/day   which  is  below  the  standard.  In  this  paper  the  modeling  of  the  system  as
continuous  supply  system  was  made,  depending  on  the  future  water  consumption  and
availability of water.  The results  depict  that the existing system has the ability to serve the
present  population  of  the  town  and  also  capable  of  meeting  the  future  extension  water
demand  of  the  2025  year.  The  output  values  of  velocities  are  parallel  reasonably  to  the
assumed  limits  of  velocities  (0.4  m/s  to  1.5  m/s)  to  avoid  stagnation  and  water  quality
problems and also the pressure values are  5%  below  and 95 %  are within the recommended
range of country manual standard. Overall it is within the limits of the design pressures in the
residential  areas.  In  conclusion  the  performance  of  the  existing  distribution  network  under
current water demand is safe concerned with sources and more focus should be made around
the intake areas to get fully design discharge of 42 l/s and  to protect entry of sediments from
the  upstream  side  of  the  system  and  further  study  is  recommended  to  appropriate
improvements.
PERFORMANCE EVALUATION OF GOBA TOWN WATER SUPPLY
Creators: name: ABOMA TARESSA SHONE
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2017

description: Shortage of water supplies since 2012 and intermittent water supply on the rainy season (due
to siltation) were the major challenges facing Goba town. This study was aimed at evaluating
the performance of water supply distribution system, the existing water supply coverage of
the town and water losses. The data used includes, annual water production and consumption,
surveying  data and geometrical properties of pipes from design.  For  the  data analysis,
AWWA water audit  and EPANET2.0  software’s were used. Discussions were made with
local experts and communities to support the  qualitative  analysis.  From  the result of the
analysis, it was observed that the total water loss in Goba town water supply distribution
system is moderate reaches up to 29.1% of the total system input volume and about 27.3% of
the total system loss  is real losses and 0.4% apparent losses. Besides, the average daily per
capita water consumption of the town is 23 liters/person/day which is below the standard. In
this paper the modeling of the system as continuous supply system was made, depending on
the  future water consumption and  availability of water. The results depict  that the existing
system has the ability to serve the present population of the town and also capable of meeting
the future extension water demand  of  the  2025  year.  The output values  of velocities are
parallel reasonably to the assumed limits of velocities (0.4 m/s to 1.5 m/s) to avoid stagnation
and water quality problems and also the pressure values are 5% below and 95 % are within
the recommended range of country manual  standard. Overall it is within the limits of the
design pressures in the residential areas. In conclusion the performance of the existing
distribution network under current water demand is safe  concerned with sources  and more
focus should be made around the intake areas  to get fully design discharge of 42 l/s and    to
protect entry of sediments from the upstream side of the system and further study is
recommended to appropriate improvements.
Quantum chemistry studies of the O K-edge X-ray absorption in WO3 and AWO3
Creators: name: Bocharov, Dmitry
name: Kuzmin, Alexei
name: Purans, Juris
name: Zhukovskii, Yuri
Publisher: name: arXiv
Year: 2010
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: In this work we present an interpretation of experimental O K-edge x-ray absorption near edge structure (XANES) in perovskite-type WO3 and AWO3 compounds (A = H and Na) using three different first principles approaches: (i) full-multiple-scattering (FMS) formalism (the real-space FEFF code), (ii) hybrid density functional theory (DFT) method with partial incorporation of exact Hartree-Fock exchange using formalism of the linear combination of atomic orbitals (LCAO) as implemented in the CRYSTAL code; (iii) plane-wave DFT method using formalism of the projector-augmented waves (PAW) as implemented in the VASP code.
description: 9 pages
Delving into Female Adolescents Leadership Experiences in the Midst of Leading Service Learning Engagements: A Qualitative Case Study
Creators: name: Michael, Heather
name: Mitton-Kükner, Jennifer
Publisher: name: Alberta Journal of Educational Research
Year: 2017

description: The purpose of this work is to explore the experiences of four adolescent females who assumed leadership roles in service learning projects, in order to understand more about how those projects inspired and informed their understanding of themselves as leaders in the school and community. What became clear through this study is that age and gender played largely into participants’ understanding of leadership. It also became evident that adolescent females need opportunities to practice their leadership skills and that service learning projects have the potential to create such occasions. L’objectif de ce travail est d’explorer les expériences de quatre adolescentes qui ont assumé des rôles de leadership dans le contexte de projets d’apprentissage par le service, et d’en tirer des connaissances sur la mesure dans laquelle ces projets les ont inspirées et ont façonné leur identité de chef au sein de l’école et de la communauté. Les résultats indiquent que l’âge et le sexe ont joué un rôle significatif dans leur compréhension du leadership. Ils révèlent également que les adolescentes ont besoin d’occasion de pratiquer leurs compétences en leadership et que les projets d’apprentissage par le service présentent le potentiel de fournir de telles occasions.
description: Alberta Journal of Educational Research, Vol. 62 No. 4 (2016): Winter
217674-502003-1-PB.pdf
Creators: name: Sagalovich, Alex
Publisher: name: figshare
Year: 2020
Subjects: subject: 100605 Performance Evaluation; Testing and Simulation of Reliability
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: This paper reports comparative tribotechnical tests of surfaces, hardened by cementation and plasma nitriding Avinit N, for contact fatigue strength at friction in rolling with slipping. Following the cementation, the samples’ hardened layer thickness was 1.2 mm; on nitriding, the thickness of the hardened layer was 0.25 mm. The tests were carried out using an acoustic emission method, which is extremely sensitive when registering the transition of tribosystems’ operation from the normal (mechanochemical) wear to the initial surface destruction of a fatigue nature. The tests have shown that the average number of cycles before the initial destruction due to fatigue for the samples hardened by the Avinit nitriding technology is 1.82-time higher compared to the cementation-hardened samples. The depth of damage at the surface of the cemented samples could vary between 0.01 and 0.027 mm depending on the diameter of the damage. For the nitrided surfaces, the depth of damage did not exceed 0.003 mm. The samples’ resistance to the fatigue wear (destruction) was determined by tests based on 1,000,000 cycles at contact loads σmax=1,140 MPa, typical of medium-loaded surfaces. The test results demonstrated that the integrated multicyclic resistance to fatigue wear (destruction) of the samples, hardened by nitriding, is more than 10 times higher than that of the cementation-hardened samples. The study reported here confirms the effectiveness of using the Avinit ion-plasma nitriding technology instead of cementing, to improve the contact strength of the parts’ surfaces. At the same time, worth noting are the advantages of this technology to maintain the size and high quality of surface treatment, which eliminates the need to mechanically finish them after hardening Keywords: friction; rolling with surface slipping, contact fatigue strength; gas cementation; plasma nitriding
nlstac: Non-Gradient Separable Nonlinear Least Squares Fitting
Creators: name: Torvisco, J. A. F.
name: Benítez, R.
name: Arias, M. R.
name: Sánchez, J. Cabello
Publisher: name: arXiv
Year: 2024
Subjects: subject: Statistics Theory (math.ST)
subject: FOS: Mathematics

description: A new package for nonlinear least squares fitting is introduced in this paper. This package implements a recently developed algorithm that, for certain types of nonlinear curve fitting, reduces the number of nonlinear parameters to be fitted. One notable feature of this method is the absence of initialization which is typically necessary for nonlinear fitting gradient-based algorithms. Instead, just some bounds for the nonlinear parameters are required. Even though convergence for this method is guaranteed for exponential decay using the max-norm, the algorithm exhibits remarkable robustness, and its use has been extended to a wide range of functions using the Euclidean norm. Furthermore, this data-fitting package can also serve as a valuable resource for providing accurate initial parameters to other algorithms that rely on them.
GIS BASED DECISION SUPPORT SYSTEM FOR SYSTEMATIZED  WATER DISTRIBUTION NETWORK ASSET MANAGEMENT  SYSTEM:
Creators: name: MEDHIN SHIMELIS
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2017

description: Most water supply services of cities in Ethiopia are unreliable, particularly in providing an
adequate amount. The reasons could be diverse and many, but the most common factors are a
lack  of proper operation and maintenance  (O&M), and poor asset management practices of the
distribution systems. These bottlenecks of service provisions have significantly influenced the
overall progress of the national development, in particular,  the lives of citizens. Therefore, this
study aimed at alleviating water distribution related problems through providing Geographical
Information System (GIS) based Decision Support System (DSS) to systematize the existing
O&M method for sustainable water distribution in the Harar city. To achieve this duty, None
Revenue Water (NRW) of the Harar city was analyzed using International Water Audit (IWA)
method. The pipe burst rate was analyzed using excel sheet based on pipe burst history data as
well.  Pipe risk assessment was performed based on  a new approach  called T-MALDP tactic,
using  GIS  9.3  Index  modeling.  Sensitivity  analysis  was  carried  out  for  comparison.  The
hydraulic characteristic of the distribution system was simulated via Epanet.  Database was
prepared  and suggested  DSS for the  water distribution O&M process. From the  analysis,  the
NRW result, 45.27% and the burst rate 6.18/km/annum was indicated poor asset management
practice.  The T-MALDP pipe risk analysis result indicates 18%,  imperative, 17% Desirable,
28% required monitoring and 37% no need of improvement, which map was displayed with a
premium Google Earth image of the Harar town. The sensitivity of T-MALDP risk result was
measured  with  statistical measures and  map removal  technique.  Hence,  pipe diameter imposed
the highest impact on pipe vulnerability to burst followed by pipe material, pressure and traffic
loading. Moreover,  few significant correlations between T-MALDP parameters were found
independently.  Map  removal  sensitivity  analysis  was  indicated  that  as  the  amount  of  pipe
failure  factors  increase,  the  chance  of  getting  the  riskiest  pipe  will  increase.  The  existing
distribution system  was modified  and  optimized.  Applying  GIS and DSS in the proposed O&M
method will increase the efficiency and assist the water network management.  The output of
the research showed that, in order to improve the efficiency of  the Harar town water network
management,  GIS, DSS and Hydraulic modeling based asset management is highly applicable.
EVALUATION OF THE SUSTAINIBLITY OF RURAL  WATER SUPPLY SCHEMES: A CASE OF BAMBASI WOREDA
Creators: name: TAREKEGN BIRHANU
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2017

description: Water is essential for all lives on earth and is a basic component of sustainable development
and growth. Government and Non-governmental organizations have been implemented water
projects to promote safe water supply to the rural communities. However, in most project
areas, there is lack of sustainability of the water supply systems. The purpose of this study
was to evaluate sustainability of rural water supply schemes in Bambasi Woreda along with
triggering factors.  Keshemando 1, Dabous, Village 48 and Village 16 Keble's were selected
for the study. Due to, inaccessibility of infrastructure and poorly managed. The study
employed descriptive survey design. The target population of this study is 1560 household.
Random sampling was used in this study. Through random sampling, 122 households were
selected for the study. Primary data for the study was collected using qualitative an
quantitative (focus group dissection, key informant, field and observation structured
questionnaires) that were administered to the respondents by the researcher. The findings of
the study indicate that community participation, technical aspect, water point management
practices and community training do influence sustainability of community water supply
schemes. It was also found out that the sustainability of water supply scheme is assessed by
using multi criteria analysis approach. Based on the general condition of the water supply
scheme, technical, financial, social and institutional and there sub factor are weighted and
evaluated by simple additive weighting method. Finally, the sustainability index value has
been classified in three classes where, six water points belongs to poor sustainable class, four
has partial sustainable and the remaining two has sustainable class. The study recommends
that community participation in the whole project cycle should be enhanced, the involvement
of donors  have  great importance to the local people and administration bodies, however it
would be good if  the users empowered to operate their own system and supplied water
schemes maintenance tools within their own shop and maintenance center or provide the
schemes spare parts with in the vicinity by assigning a revolving fund .
The Ariadne's Clew Algorithm
Creators: name: Ahuactzin, J. M.
name: Bessiere, P.
name: Mazer, E.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: We present a new approach to path planning, called the "Ariadne's clew algorithm". It is designed to find paths in high-dimensional continuous spaces and applies to robots with many degrees of freedom in static, as well as dynamic environments - ones where obstacles may move. The Ariadne's clew algorithm comprises two sub-algorithms, called Search and Explore, applied in an interleaved manner. Explore builds a representation of the accessible space while Search looks for the target. Both are posed as optimization problems. We describe a real implementation of the algorithm to plan paths for a six degrees of freedom arm in a dynamic environment where another six degrees of freedom arm is used as a moving obstacle. Experimental results show that a path is found in about one second without any pre-processing.
PERPORMAMCE EVALLATION OF GOBA TUWN WATER SUPPLY DISTRIBUTON SYSTEM
Creators: name: ABOMA TARESSA SHONE
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2017

description: Shortage of water supplies since 2012 and intermittent water supply on the rainy season (due
to siltation) were the major challenges facing Goba town. This study was aimed at evaluating
the performance of water supply distribution system, the existing water supply coverage of
the town and water losses. The data used includes, annual water production and consumption,
surveying  data and geometrical properties of pipes from design.  For  the  data analysis,
AWWA water audit  and EPANET2.0  software’s were used. Discussions were made with
local experts and communities to support the  qualitative  analysis.  From  the result of the
analysis, it was observed that the total water loss in Goba town water supply distribution
system is moderate reaches up to 29.1% of the total system input volume and about 27.3% of
the total system loss  is real losses and 0.4% apparent losses. Besides, the average daily per
capita water consumption of the town is 23 liters/person/day which is below the standard. In
this paper the modeling of the system as continuous supply system was made, depending on
the  future water consumption and  availability of water. The results depict  that the existing
system has the ability to serve the present population of the town and also capable of meeting
the future extension water demand  of  the  2025  year.  The output values  of velocities are
parallel reasonably to the assumed limits of velocities (0.4 m/s to 1.5 m/s) to avoid stagnation
and water quality problems and also the pressure values are 5% below and 95 % are within
the recommended range of country manual  standard. Overall it is within the limits of the
design pressures in the residential areas. In conclusion the performance of the existing
distribution network under current water demand is safe  concerned with sources  and more
focus should be made around the intake areas  to get fully design discharge of 42 l/s and    to
protect entry of sediments from the upstream side of the system and further study is
recommended to appropriate improvements.
Variants of formal nearby cycles
Creators: name: Mieda, Yoichi
Publisher: name: arXiv
Year: 2010
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 14F20, 14G20, 14G22

description: In this paper, we introduce variants of formal nearby cycles for a locally noetherian formal scheme over a complete discrete valuation ring. If the formal scheme is locally algebraizable, then our nearby cycle gives a generalization of Berkovich's formal nearby cycle. Our construction is entirely scheme-theoretic and does not require rigid geometry. Our theory is intended for applications to the local study of the cohomology of Rapoport-Zink spaces.
description: 38 pages
WATER SUPPLY AND ENVIRONMENTAL ENGINEERING,
Creators: name: FEVEN KINFE
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2017

description: In  Arba  Minch  Ethio  Fishery  condominium,  domestic  wastewater  generated  from
residential houses is often drained into rivers and streams without treatment after septic
tank. As result the environment is exposed to foul smell and potential health hazard. In
order  to  identify  solution  to  the  problem,  the  objective  of  this  study  focus  on  the
pollutant removal efficiency of planted horizontal subsurface flow constructed wetlands
in pilot scale. For the purpose the this study four pilot scale horizontal subsurface flow
constructed  wetland  units  were  built  from  concrete  and  planted  with  Phragmites
australis, Typha latifola, Eleocharis palustris and keeping one by control unit. Each CW
has a rectangular shape with inlet and outlet zone, filled with washed construction gravel
of 28-37.5mm diameter, while the main bed was filled with 10-20 mm diameter sized
gravel. The planted horizontal subsurface flow constructed wetland showed considerable
potential  for  removing  major  pollutants  (TSS,  BOD5,  ammonia-N,  nitrate-N  and
phosphorus) from condominium wastewater than the control (unplanted). No significant
differences were observed among P. australis, E. palustris and T.latifolia performance
with regards to their purification ability; however, E. palustris showed higher percentage
removal efficiency in NO3-N (89%), (88%) for NH3
--N and for PO4
3--P (66.1%). The
effluent concentration values of BOD5, TSS, nitrate-N, ammonia-N and phosphorus
from the constructed wetland achieves the discharge limit set by Ethiopia National
Environmental Quality Standard for domestic wastewater. This is promising to be used
as an efficient waste water treatment system for condominium houses. There is also a
reuse option for irrigation and Gardening .
Ground state properties of the one-dimensional electron liquid
Creators: name: Lee, R. M.
name: Drummond, N. D.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We present calculations of the energy, pair correlation function (PCF), static structure factor (SSF), and momentum density (MD) for the one-dimensional electron gas using the quantum Monte Carlo method. We are able to resolve peaks in the SSF at even-integer-multiples of the Fermi wave vector, which grow as the coupling is increased. Our MD results show an increase in the effective Fermi wave vector as the interaction strength is raised in the paramagnetic harmonic wire; this appears to be a result of the vanishing difference between the wave functions of the paramagnetic and ferromagnetic systems. We have extracted the Luttinger liquid exponent from our MDs by fitting to data around the Fermi wave vector, finding good agreement between the exponent of the ferromagnetic infinitely-thin wire and the ferromagnetic harmonic wire.
description: 13 pages, 16 figures, 5 tables
Assessing suitability of calcium bentonite for application in oil well drilling fluid
Creators: name: Salami, Abiola
Publisher: name: University of British Columbia
Year: 2019

description: Bentonite is a clay mineral widely used in many industrial applications. Bentonite is a major constituent of the drilling fluid used in oil well drilling operations. Some of the functions of drilling fluid include removal of drilled cuttings from the hole, cooling, and lubrication of the drill bit, and suspension of drilling cuttings when operations are stopped. There are two major forms of bentonite: sodium and calcium bentonite. Sodium bentonite is preferably used in the formulation of drilling fluid due to a high swelling potential which allows for high viscosity build up and a lower rate of filtration. However, there is a potential depletion of Wyoming sodium bentonite as a short supply of the high-quality sodium bentonite has been reported. Prior research has shown that the presence of exchangeable cation in the calcium bentonite has made it possible to upgrade its swelling capacity thereby improving the viscosity build-up and reducing the rate of filtration. In view of this, the present study investigated the suitability of calcium bentonite was treated with sodium carbonate (Na₂CO₃) and magnesium oxide (MgO) as a potential alternative to the sodium bentonite for application in the oil well drilling fluid. For experimental investigation, the calcium bentonite supplied by Pacific Bentonite Limited (PBL) was procured, and the preliminary characteristics were determined; the grade and quality were assessed through cation exchange capacity, swelling index and plasticity index tests; the specific tests such as rheology and fluid loss was also conducted to assess the suitability of the PBL calcium bentonite in drilling fluids. The results showed that the PBL calcium bentonite improved considerably and can be considered for application in drilling fluids.
Matters of Care in Alberta’s “Inspiring Education” Policy: A Critical Feminist Discourse Analysis
Creators: name: Bohachyk, Laura
Publisher: name: Alberta Journal of Educational Research
Year: 2017

description: Using the ethics of care as a theoretical lens, alongside the techniques of discourse analysis, I critically analyze texts from Alberta’s Inspiring Education policies. On the basis of this analysis, I identify two discourses: the sentimental treatment of care and the “facilitator discourse.” I argue that a caring teacher-student relationship is more complex than a doting teacher responding to the desires of a “learner.” We must begin to reflect in educational policies the reciprocity of caring educational relationships, the rightness of mutually accepted authority, and the skills required to competently perform the work of caring. Adoptant la perspective théorique de l’éthique des soins et m’appuyant sur les techniques de l’analyse du discours, je fais une analyse critique de textes tirés des politiques albertaines sur l’inspiration et l’éducation. À partir de l’analyse, j’identifie deux discours : la perspective sentimentale des soins et le discours « facilitateur ». Je maintiens qu’un rapport chaleureux entre un enseignant et un élève est plus complexe que les actions d’un enseignant adorant qui répond aux désirs d’un « apprenant ». Nos politiques en matière d’éducation doivent commencer à refléter la réciprocité des rapports éducatifs chaleureux, la justesse d’une autorité mutuellement acceptée et les habiletés nécessaires pour bien accomplir le travail en soins dans un milieu scolaire.
description: Alberta Journal of Educational Research, Vol. 62 No. 4 (2016): Winter
title: ÐÐ¾Ð¼Ð¿ÑÑÑÐµÑÐ½Ð¾Ðµ Ð¼Ð¾Ð´ÐµÐ»Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ðµ Ð¿ÑÐ¾ÑÐµÑÑÐ° ÑÐµÐ·Ð°Ð½Ð¸Ñ Ð¼ÐµÑÐ°Ð»Ð»Ð¸ÑÐµÑÐºÐ¸Ñ Ð·Ð°Ð³Ð¾ÑÐ¾Ð²Ð¾Ðº
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
title: Computer simulation of metal workpiece cutting process
Creators: name: Ð£ Ð¦Ð·ÑÐ½ÑÑÐ¹
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 ÐµÐ·Ð°Ð½Ð¸Ðµ Ð¼ÐµÑÐ°Ð»Ð»Ð¾Ð²
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description: ÐÐµÑÐ¾Ð´Ð°Ð¼Ð¸ Ð¼Ð¾Ð´ÐµÐ»Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ Ð¿ÑÐ¾ÑÐµÑÑÐ° ÑÐµÐ·Ð°Ð½Ð¸Ñ, Ð¾Ð¿ÑÐ¸ÑÐµÑÐºÐ¾Ð¹ Ð¸ ÑÐ»ÐµÐºÑÑÐ¾Ð½Ð½Ð¾Ð¹ Ð¼Ð¸ÐºÑÐ¾ÑÐºÐ¾Ð¿Ð¸Ð¸, Ð¸ÑÐ¿ÑÑÐ°Ð½Ð¸Ð¹ Ð½Ð° Ð¼Ð¸ÐºÑÐ¾ÑÐ²ÐµÑÐ´Ð¾ÑÑÑ, Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ñ ÑÑÑÑÐºÑÑÑÐ½ÑÐµ Ð¸Ð·Ð¼ÐµÐ½ÐµÐ½Ð¸Ñ, Ð¿ÑÐ¾Ð¸ÑÑÐ¾Ð´ÑÑÐ¸Ðµ Ð² Ð¼Ð°ÑÐµÑÐ¸Ð°Ð»Ðµ Ð¾Ð±ÑÐ°Ð·ÑÐ¾Ð² - ÑÑÑÑÐ¶ÐµÐº Ð¸Ð· ÑÑÐ°Ð»Ð¸ Ð¥ÐÐ, Ð¸ÑÐ¿ÑÑÐ°Ð½Ð½ÑÑ Ð² ÑÐµÐ·ÑÐ»ÑÑÐ°ÑÐµ Ð»ÐµÐ·Ð²Ð¸Ð¹Ð½Ð¾Ð¹ Ð¾Ð±ÑÐ°Ð±Ð¾ÑÐºÐ¸ Ð¿ÑÐ¸ ÑÐºÐ¾ÑÐ¾ÑÑÑÑ 8,6â¦.275 Ð¼ / Ð¼Ð¸Ð½. ÐÐ¾ÐºÐ°Ð·Ð°Ð½Ð¾, ÑÑÐ¾ Ñ ÑÐ²ÐµÐ»Ð¸ÑÐµÐ½Ð¸ÐµÐ¼ ÑÐºÐ¾ÑÐ¾ÑÑÐ¸ ÑÐµÐ·Ð°Ð½Ð¸Ñ, ÑÐ²ÐµÐ»Ð¸ÑÐ¸Ð²Ð°ÑÑÑÑ ÑÐ¸Ð»Ñ ÑÐµÐ·Ð°Ð½Ð¸Ñ, Ð¿Ð¾Ð²ÑÑÐ°ÐµÑÑÑ ÑÐµÐ¼Ð¿ÐµÑÐ°ÑÑÑÐ° Ð¸ Ð²Ð¾Ð·ÑÐ°ÑÑÐ°ÑÑ Ð¾ÑÑÐ°ÑÐ¾ÑÐ½Ð¾Ðµ Ð½Ð°Ð¿ÑÑÐ¶ÐµÐ½Ð¸Ðµ Ð² Ð·Ð¾Ð½Ðµ ÑÐµÐ·Ð°Ð½Ð¸Ñ.
description: Methods of modeling the cutting process, optical and electron microscopy, microhardness tests, structural changes occurring in the material of samples - chips of steel HVG, tested as a result of blade processing at speeds of 8,6....275 m / min. it is Shown that with increasing cutting speed, the cutting force increases, the temperature increases and the residual stress in the cutting zone increases.
Swarm behavior of self-propelled rods and swimming flagella
Creators: name: Yang, Yingzi
name: Marceau, Vincent
name: Gompper, Gerhard
Publisher: name: arXiv
Year: 2010
Subjects: subject: Biological Physics (physics.bio-ph)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Systems of self-propelled particles are known for their tendency to aggregate and to display swarm behavior. We investigate two model systems, self-propelled rods interacting via volume exclusion, and sinusoidally-beating flagella embedded in a fluid with hydrodynamic interactions. In the flagella system, beating frequencies are Gaussian distributed with a non-zero average. These systems are studied by Brownian-dynamics simulations and by mesoscale hydrodynamics simulations, respectively. The clustering behavior is analyzed as the particle density and the environmental or internal noise are varied. By distinguishing three types of cluster-size probability density functions, we obtain a phase diagram of different swarm behaviors. The properties of clusters, such as their configuration, lifetime and average size are analyzed. We find that the swarm behavior of the two systems, characterized by several effective power laws, is very similar. However, a more careful analysis reveals several differences. Clusters of self-propelled rods form due to partially blocked forward motion, and are therefore typically wedge-shaped. At higher rod density and low noise, a giant mobile cluster appears, in which most rods are mostly oriented towards the center. In contrast, flagella become hydrodynamically synchronized and attract each other; their clusters are therefore more elongated. Furthermore, the lifetime of flagella clusters decays more quickly with cluster size than of rod clusters.
The Gender Paradox in School Mathematics
Creators: name: Cunningham, Malcolm
Publisher: name: Alberta Journal of Educational Research
Year: 2017

description: Current quantitative gender and mathematics research exists as separate ability and postsecondary access studies, each drawing different conclusions. But if gender, achievement and enrollment (measurable proxies) are modeled together it will be possible to investigate possible associations. Using 106,473 standardized Grades 3, 6 and 9 Ontario student test responses from a single cohort, likelihood of enrolling in Grade 9 academic mathematics was modeled against elementary achievement and gender in a binary response model. Males achieved higher, (0.028≤d≤0.118), and occupied both achievement extremes in greater numbers, (1.04≤VR≤1.10), while females were 1.5 times more likely to enroll in academic courses. These paradoxical results are discussed in relation to the utility of achievement and enrollment as research metrics in gender and mathematics research. La recherche quantitative actuelle sur la différence en mathématiques entre les filles et les garçons se déroule sur deux plans distincts, un portant sur les habiletés et l’autre sur l’accès aux études secondaires, et les deux arrivent à des conclusions différentes. En modélisant ensemble le sexe, le rendement et les inscriptions (passerelles mesurables), il est possible d’étudier des associations possibles. Puisant dans 106 473 réponses aux examens normalisés d’une seule cohorte d’élèves en 3e, 6e et 9e années en Ontario, nous avons modelé, dans un modèle de réponse binaire, la probabilité de s’inscrire à des cours de mathématiques théoriques en 9e année en relation avec le sexe et le rendement à l’école élémentaire. Le rendement des garçons était supérieur (0.028≤d≤0.118) et leurs réponses se situaient aux deux pôles de rendement plus souvent (1.04≤VR≤1.10), alors que les filles s’inscrivaient aux cours académiques 1,5 fois plus souvent que les garçons. Nous discutons de ces résultats paradoxaux par rapport à l’utilité du rendement et de l’inscription comme mesures dans la recherche portant sur la différence en mathématiques entre les filles et les garçons.
description: Alberta Journal of Educational Research, Vol. 62 No. 4 (2016): Winter
Computational Aspects of Reordering Plans
Creators: name: Backstrom, C.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: This article studies the problem of modifying the action ordering of a plan in order to optimise the plan according to various criteria. One of these criteria is to make a plan less constrained and the other is to minimize its parallel execution time. Three candidate definitions are proposed for the first of these criteria, constituting a sequence of increasing optimality guarantees. Two of these are based on deordering plans, which means that ordering relations may only be removed, not added, while the third one uses reordering, where arbitrary modifications to the ordering are allowed. It is shown that only the weakest one of the three criteria is tractable to achieve, the other two being NP-hard and even difficult to approximate. Similarly, optimising the parallel execution time of a plan is studied both for deordering and reordering of plans. In the general case, both of these computations are NP-hard. However, it is shown that optimal deorderings can be computed in polynomial time for a class of planning languages based on the notions of producers, consumers and threats, which includes most of the commonly used planning languages. Computing optimal reorderings can potentially lead to even faster parallel executions, but this problem remains NP-hard and difficult to approximate even under quite severe restrictions.
The Tayler instability of toroidal magnetic fields in a columnar gallium experiment
Creators: name: Ruediger, G.
name: Schultz, M.
name: Gellert, M.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The nonaxisymmetric Tayler instability of toroidal magnetic fields due to axial electric currents is studied for conducting incompressible fluids between two coaxial cylinders without endplates. The inner cylinder is considered as so thin that even the limit of R_in \to 0 can be computed. The magnetic Prandtl number is varied over many orders of magnitudes but the azimuthal mode number of the perturbations is fixed to m=1. In the linear approximation the critical magnetic field amplitudes and the growth rates of the instability are determined for both resting and rotating cylinders. Without rotation the critical Hartmann numbers do {\em not} depend on the magnetic Prandtl number but this is not true for the growth rates. For given product of viscosity and magnetic diffusivity the growth rates for small and large magnetic Prandtl number are much smaller than those for Pm=1. For gallium under the influence of a magnetic field at the outer cylinder of 1 kG the resulting growth time is 5 s. The minimum electric current through a container of 10 cm diameter to excite the kink-type instability is 3.20 kA. For a rotating container both the critical magnetic field and the related growth times are larger than for the resting column.
description: 7 pages, 9 figures, submitted to Astron. Nachr
Negotiation problem
Creators: name: Baybusinov, Izat B.
name: Fenoaltea, Enrico Maria
name: Zhang, Yi-Cheng
Publisher: name: arXiv
Year: 2022
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Theoretical Economics (econ.TH)
subject: Probability (math.PR)
subject: FOS: Physical sciences
subject: FOS: Economics and business
subject: FOS: Mathematics

description: We propose and solve a negotiation model of multiple players facing many alternative solutions. The model can be generalized to many relevant circumstances where stakeholders' interests partially overlap and partially oppose. We also show that the model can be mapped into the well-known directed percolation and directed polymers problems. Moreover, many statistical mechanics tools, such as the Replica method, can be fruitfully employed. Studying our negotiation model can enlighten the links between social-economic phenomena and traditional statistical mechanics and help to develop new perspectives and tools in the fertile interdisciplinary field.
description: 14 pages, 4 figures. Published in "Physica A:statistical mechanics and its applications"
title: PR-ÑÐ¾Ð¿ÑÐ¾Ð²Ð¾Ð¶Ð´ÐµÐ½Ð¸Ðµ Ð´ÐµÑÑÐµÐ»ÑÐ½Ð¾ÑÑÐ¸ ÑÑÑÐ¾Ð¸ÑÐµÐ»ÑÐ½Ð¾Ð¹ ÐºÐ¾Ð¼Ð¿Ð°Ð½Ð¸Ð¸ (Ð½Ð° Ð¿ÑÐ¸Ð¼ÐµÑÐµ ÐÐ Â«Ð­ÑÐ°Ð»Ð¾Ð½ÐÐµÐ½Ð¡Ð¿ÐµÑÐ¡ÐÐ£Â»)
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: PR-support of a construction company (for example o Etalon LenSpetsSMU JSC)
Creators: name: ÐÐ°ÑÐ¾Ñ, ÐÐºÐ°ÑÐµÑ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: 2021
Subjects: Ð¿Ð¾Ð·Ð¸ÑÐ¸Ð¾Ð½Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ðµ
pr-ÑÐµÑ Ð½Ð¾Ð»Ð¾Ð³Ð¸Ð¸
Ð¿ÑÐ¾Ð´Ð²Ð¸Ð¶ÐµÐ½Ð¸Ðµ
ÑÑÐµÐ´ÑÑÐ²Ð° pr
ÐºÐ¾Ð¼Ð¼ÑÐ½Ð¸ÐºÐ°ÑÐ¸Ð¸
Ð¿Ð¾ÐºÑÐ¿Ð°ÑÐµÐ»Ð¸
Ð¿Ð¾ÑÑÐ°Ð²ÑÐ¸ÐºÐ¸
positioning
pr-technologies
promotion
pr funds
communications
buyers
suppliers

description: Ð¦ÐµÐ»ÑÑ Ð´Ð°Ð½Ð½Ð¾Ð¹ ÑÐ°Ð±Ð¾ÑÑ ÑÐ²Ð»ÑÐµÑÑÑ Ð°Ð½Ð°Ð»Ð¸Ð· Ð¾ÑÐ¾Ð±ÐµÐ½Ð½Ð¾ÑÑÐµÐ¹ PR ÑÐ¾Ð¿ÑÐ¾Ð²Ð¾Ð¶Ð´ÐµÐ½Ð¸Ñ Ð´ÐµÑÑÐµÐ»ÑÐ½Ð¾ÑÑÐ¸ ÑÑÑÐ¾Ð¸ÑÐµÐ»ÑÐ½Ð¾Ð¹ ÐºÐ¾Ð¼Ð¿Ð°Ð½Ð¸Ð¸ (Ð½Ð° Ð¿ÑÐ¸Ð¼ÐµÑÐµ ÐÐ Â«Ð­ÑÐ°Ð»Ð¾Ð½ ÐÐµÐ½Ð¡Ð¿ÐµÑÐ¡ÐÐ£Â»).ÐÐ¾Ð»ÑÑÐµÐ½Ð½ÑÐµ Ð² ÑÐ¾Ð´Ðµ Ð¿ÑÐ¾Ð²ÐµÐ´ÐµÐ½Ð½Ð¾Ð³Ð¾ Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ñ Ð¼Ð°ÑÐµÑÐ¸Ð°Ð»Ñ Ð¼Ð¾Ð³ÑÑ Ð½Ð°Ð¹ÑÐ¸ Ð¿ÑÐ¸Ð¼ÐµÐ½ÐµÐ½Ð¸Ðµ Ð² ÑÐ°Ð·Ð»Ð¸ÑÐ½ÑÑ Ð°ÑÐ¿ÐµÐºÑÐ°Ñ ÑÑÐ½ÐºÑÐ¸Ð¾Ð½Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ Ð¸ ÑÐ°Ð·Ð²Ð¸ÑÐ¸Ñ Ð±Ð¸Ð·Ð½ÐµÑÐ° ÐÐÂ«Ð­ÑÐ°Ð»Ð¾Ð½ ÐÐµÐ½Ð¡Ð¿ÐµÑÐ¡ÐÐ£Â») Ð² ÑÐ¾Ð²ÑÐµÐ¼ÐµÐ½Ð½Ð¾Ð¹ Ð Ð¾ÑÑÐ¸Ð¸, ÑÐ¾ÑÐ¼Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ ÐºÐ¾Ð½ÐºÑÑÐµÐ½ÑÐ¾ÑÐ¿Ð¾ÑÐ¾Ð±Ð½Ð¾ÑÑÐ¸ ÐºÐ°Ðº Ð½Ð° Ð¾ÑÐµÑÐµÑÑÐ²ÐµÐ½Ð½Ð¾Ð¼, ÑÐ°Ðº Ð¸ Ð¼Ð¸ÑÐ¾Ð²Ð¾Ð¼ ÑÑÐ½ÐºÐ°Ñ.
description: The final qualifying work is presented on 87 pages. The purpose of this work is to analyze the features of PR support for the activities of a construction company (for example, Etalon LenSpetsSMU JSC).The paper presents the theoretical foundations of PR-support for a construction industry enterprise; an analysis of the current state of th any in the rection of advertising, public relations in JSC Â«Etalon LenSpetsSMUÂ» was carried out, a campaign plan for advertising, public relations in JSC Â«Et-alon LenSpetsSMUÂ» was developed. The materials obtained in the course of the study can be used in various aspects of the functioning and business de-velopment of Etalon LenSpetsSMU JSC) in modern Russia, the formation of competitiveness both in the domestic and world market.
An examination of user and household characteristics associated with adolescents' adoption and usage of a lifestyle behaviour modification app
Creators: name: Piatkowski, Camilla
Publisher: name: University of British Columbia
Year: 2019

description: BACKGROUND: Adolescent obesity continues to be a major public health problem within Canada; therefore, effective solutions are required. E-health interventions can provide Canadian adolescents (13-17 years old) with personalized support to help them modify their obesogenic behaviours. However, predictors of app adoption and usage among adolescents have not been extensively examined. OBJECTIVE: This study aimed to examine user and household characteristics associated with adolescents’ adoption and usage of the Aim2Be© app; a health behaviour modification intervention delivered through a smartphone app. METHODS: 371 adolescent-parent dyads completed baseline assessment and were provided with access to the Aim2Be© app. Mean adolescent age was 14.9 years and 50.1% were male (n=186). Mean adult age was 44.1 years and 34.7% were male (n=129). Multivariable logistic and linear regressions, along with path analyses, were used to determine characteristics that were significantly associated with app adoption and usage, respectively. Additionally, analyses were stratified by parent’s sex. Univariable analyses were conducted in Stata (v.13.1), while path analyses were conducted in Mplus (v.8). All models were adjusted for adolescent’s age and sex, and a significance level of 5% was used. RESULTS: 79.2% of adolescents (n=294) adopted the Aim2Be© app. When examining user characteristics, adolescent engagement in healthy behaviours was directly associated with increased odds of app adoption (OR=1.08; 95%CI=1.01-1.14). Autonomous motivation was indirectly associated with app adoption (OR=1.02; 95%CI=1.00-1.04). When examining parenting practices, mediated through user characteristics, autonomy supportive practices were associated with increased app usage (β=0.21; 95%CI=0.07-0.36), while structure practices were indirectly associated with increased odds of app adoption (OR=1.02; 95%CI=1.00-1.04). When the analyses were stratified by parent’s sex, differences in the associations emerged. CONCLUSIONS: Both user characteristics and parenting practices were significantly associated with adolescents’ app adoption and/or usage. The findings of this study will help inform future e-health interventions increase user engagement by identifying the characteristics of individuals who are not accessing the intervention, as well as identifying factors of the household environment that support long-term intervention use. This information will fill an important gap within the literature, as high attrition rates are commonly reported among e-health interventions and can consequently jeopardize program effectiveness.
Estimation of Kramers-Moyal coefficients at low sampling rates
Creators: name: Honisch, Christoph
name: Friedrich, Rudolf
Publisher: name: arXiv
Year: 2011
Subjects: subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: FOS: Physical sciences

description: A new optimization procedure for the estimation of Kramers-Moyal coefficients from stationary, one-dimensional, Markovian time series data is presented. The method takes advantage of a recently reported approach that allows to calculate exact finite sampling interval effects by solving the adjoint Fokker-Planck equation. Therefore it is well suited for the analysis of sparsely sampled time series. The optimization can be performed either making a parametric ansatz for drift and diffusion functions or also parameter free. We demonstrate the power of the method in several numerical examples with synthetic time series.
description: 6 pages, 5 figures
Simultaneous scintillation light and charge readout of a pure argon filled Spherical Proportional Counter
Creators: name: Bouet, R.
name: Busto, J.
name: Cecchini, V.
name: Cerna, C.
name: Dastgheibi-Fard, A.
name: Druillole, F.
name: Jollet, C.
name: Hellmuth, P.
name: Katsioulas, I.
name: Knights, P.
name: Giomataris, I.
name: Gros, M.
name: Lautridou, P.
name: Meregaglia, A.
name: Navick, X. F.
name: Neep, T.
name: Nikolopoulos, K.
name: Perrot, F.
name: Piquemal, F.
name: Roche, M.
name: Thomas, B.
name: Ward, R.
name: Zampaolo, M.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: The possible use of a Spherical Proportional Counter for the search of neutrinoless double beta decay is investigated in the R2D2 R&D project. Dual charge and scintillation light readout may improve the detector performance. Tests were carried out with pure argon at 1.1 bar using a 6x6 mm2 silicon photomultiplier. Scintillation light was used for the first time to trigger in a spherical proportional counter. The measured drift time is in excellent agreement with the expectations from simulations. Furthermore the light signal emitted during the avalanche development exhibits features that could be exploited for event characterisation.
description: 17 pages,14 figures