cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
PERFORMANCE EVALUATION OF ARIYO-KULANO SMALL SCALE  IRRIGATION SCHEME IN KUCHA WOREDA, SNNPR, ETHIOPIA
Creators: name: AHMED ARATA HAILE
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2018

description: Evaluating performance of existing irrigation schemes is vital to  compare their potential and
current service. The main objective of performance evaluation of Ariyo  Kulano small scale
irrigation scheme was to assess the problems and suggesting possible remedial measures.
Studying its performance level is very important to share the information to government and
donating organizations.
The performance of Ariyo  Kulano Small Scale irrigation scheme was evaluated by estimating
water delivery performance indicators, water conveyance efficiency, water conveyance losses,
water use/supply, maintenance, physical, agricultural and economic performance indicators.
The water delivery performance indicators adequacy, efficiency, equity and dependability varied
widely from head to tail  reach and, during the crop season from October to December with
overall average values equal to 0.83, 0.77, 0.26 and 0.31  respectively. Thus, the irrigation
scheme when compared with Molden and Gates  standards was found under fair condition in
adequacy and efficiency  and  under  poor condition in equity and dependability.  The main canal
average water conveyance efficiency, water conveyance losses and losses in 100m per l/s varied
from 65.33% to 96.02%,  3.98 to 34.67 % and 2.55 to 6.39l/s respectively.  Analyses of water-use
performance showed that relative water supply, relative irrigation supply and water delivery
capacity were ranked as 1.1, 2.24 and 1.14respectively.The water distribution was not according
to crop water demand in the case of relative irrigation supply. The relative water supply was
categorized under acceptable range. Actual discharge capacity at system head was greater than
the intended one.  There was  averagely  20%  decrement deviation of water surface elevation
(DWSE) at full supply level  (FSL).  Effectiveness of infrastructure was found to be 35.3%.
Economically,  the scheme had serious problem about the collection of water fees (13.2%),
financial self-sufficiency (0.59), and gross return on investment (31%). Physical performance,
evaluated  in terms of irrigation ratio (0.75), cropping intensity (0.81) and sustainability of
irrigated land (2.42), were relatively fair.
TECHNICAL SUSTAINABILITY OF RURAL WATER SUPPLY  PROJECTS IN CASE OF DEBERE ELIAS WOREDA TECHNICAL SUSTAINABILITY OF RURAL WATER SUPPLY  CASE OF DEBERE ELIAS WOREDA TECHNICAL SUSTAINABILITY OF RURAL WATER SUPPLY  CASE OF DEBERE ELIAS WOREDA
Creators: name: WUBAMILAK ALEHEGN WUBAMILAK ALEHEGN DESSALEGN
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2015

description: The main objective of this study was to assess the problem of sustainability of rural water supply
projects by focusing on technical, management and social aspects of the Deber Elias woreda. The
study was concerned on investigating the gaps between the pre and post project conditions that
are necessary for the sustainability of rural water supply service delivery.
The  study  was  carried  out  in  four  Kebeles  of  Deber  Elias  woreda.  Seventy  six  water  supply
schemes were visited and survey was conducted on the water user of the Woreda. Out of this, 59
of the schemes were functional where as 17 were malfunctioned. The selection of the samples
was based  on simple stratified  random  sampling  techniques  of  the  total  Kebeles.  Therefore,
among 32% of the Kebeles considered for the study, the two most common types of water supply
schemes in rural part of the woreda were hand dug wells and spring development. Water supply
service  delivery in  the  sample  projects  was  inadequate  due  to  poor  construction (31.6%),
insufficient water quantity (13.8%), source of non-reliability (19.7%), lack of maintenance and
spare parts (29.7%), lack of trained person (5.2%), attitudinal problem and other (19.7%).
The per capita consumption of water in the Woreda is 10.25liters which is not sufficient and is
below the standard amount. An average time spent to fetch water in a single trip is almost one
hour also including the long queuing is above the standard time. This show how the community
is  seriously  suffering  from  shortages  of developed  water  points  in  the  study  area. The  survey
results about (56.8%) of the respondents are illiterate, (33.9%) of the households can read and
write, (6.6%) of  the households did  not attended formal  education, the  rest (2.6%) attended
school after grade ten. Based on the findings, The literacy level in the Woreda is  low. This could
be one of the main reason for poor management of rural water supply schemes.
The quality of drinking water has polluted due to lack of fence (43%), wastewater from bathing
and  washing  clothes (31%), groundwater  contamination  with  toilet pit (12%), turbidity (6%),
stagnant water (5%), and the rest (3%) taste and odor problems. The consequence of this is due
to  lack  of  maintenance.  Therefore, proper construction,  regular  maintenance  and  control,
working  together with  stockholders  and  creating  awareness  used  as solution to  mitigate  the
problem and sustainable use of water resources.
Vortex pair annihilation in arrays of photon cavities
Creators: name: Gladilin, Vladimir N.
name: Wouters, Michiel
Publisher: name: arXiv
Year: 2022
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We investigate theoretically the evolution of the vortex number in an array of photon condensates that is brought from an incoherent low density state to a coherent high density state by a sudden change in the pumping laser intensity. We analyze how the recombination of vortices and antivortices depends on the system parameters such as the coefficients for emission and absorption of photons by the dye molecules, the rate of tunneling between the cavities, the photon loss rate and the number of photons in the condensate.
Signals of single particle production at the earliest LHC
Creators: name: Barbieri, Riccardo
name: Torre, Riccardo
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Based on simple phenomenological Lagrangians, fulfilling reasonable consistency conditions, we consider under which circumstances the production of a single particle might be an early signal of new physics at the LHC. Effective final states are $γγ$ and $γ+jet$ already with tens of inverse picobarns of integrated luminosity at 7 TeV.
description: 8 pages, 10 figures
Local Volatility Model for Pricing Callable Quanto Option
Creators: name: Lee, David
Publisher: name: Zenodo
Year: 2022
Subjects: Local Volatility Model for Pricing Callable Quanto Option

description: We review a model for computing the price, in the domestic currency, of European standard call and put options on an underlying foreign equity (stock or index) with tenor of up to 7 years. The function implements a local volatility based pricing method.
description: https://osf.io/cms8h/wiki/home/
A note about the ground state of the ${\rm H}_3^+$ hydrogen molecular ion
Creators: name: Vieyra, J. C. Lopez
name: Turbiner, A. V.
name: Cobaxin, H. Medel
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Physics (quant-ph)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: Three simple $7-, (7+3)-, 10-$parametric trial functions for the ${\rm H}_3^+$ molecular ion are presented. Each of them provides subsequently the most accurate approximation for the Born-Oppenheimer ground state energy among several-parametric trial functions. These trial functions are chosen following a criterion of physical adequacy and includes the electronic correlation in the exponential form $\sim\exp{(γr_{12})}$, where $γ$ is a variational parameter. The Born-Oppenheimer energy is found to be $E=-1.340 34, -1.340 73, -1.341 59$\,a.u., respectively, for optimal equilateral triangular configuration of protons with the equilibrium interproton distance $R=1.65$\,a.u. The variational energy agrees in three significant digits (s.d.) with most accurate results available at present as well as for major expectation values.
description: 12 pages, 1 figure, 3 tables
IN  PARTIAL  FULFILLMENT  OF  THE  REQUIREMENT  OF  DEGREE  OF  MASTERS  OF  SCIENCE  IN  HYDRAULIC/HYDROPOWER  ENGINEERING  January 200
Creators: name: Endalkachew Dechassa Senbetu
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2006

description: Evaluating  the  sustainability  of  schemes  already  implemented  and  to  look  forward  to
what  actions  to  be  taken  is  necessary.  In  this  study  the  sustainability  of  water  supply
schemes  in  Kamashi  zone  of  Benishangul  Gumuz  Regional  State  was  seen  from  the
documents  available  about the  water supply situation  in  the  area.  The  study  is  made  by
the  use  of  both  secondary  information  and  primary  data  collected  from  field  with  a  visit
to  the  sites.  Most water  supply systems  are  concentrated  around  urban  centers.
Indices  were  taken  from  similar studies  and  used  to  assess  sustainability  and  they  show
that  the  situation  in  water  supply  is  below  the  standard.  Moreover,  from  sustainability
analysis  of  schemes  it  is  seen  that  the  systems  established  are  not  functioning  the
community  to  the  standard.  From  the  study  it  was  also - seen  that  the  most  frequently
·  ,  failing  parts  of  schemes  are  the  0-ring,  Li-seal  and  crack  on  PVC  pipes  for  the  hand
pumps  and  unavailability  of  night  storage  to  accommodate  the  freely  flowing  water
during  non-service  hours.
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i
,,
r
';'
The  challenges  and  problems  identified  as  aggravating  the  failure  of  water  supply
schemes  are:  poor organizational  structures  and  low  profile  of  O&M,  lack  of  spare  parts
within  the  local  market,  lack  of  trained  personnel,  inaccessibility  of  many  of  the
community  villages  and  loose  contact  between  the  central  bureaus  in  the  region  and ·
sector  bureaus  at  Woreda  level.  The  average  number  of  users  on  hand  pumps  is  325
households  and  the  actual  yield  of  the  pumps for  which  field  measurement was  taken  is
0 . 161itres  per second  and  for  springs  it  was  0.1  Olitres  per second.  The  average  distance
of  households  from  the  water  sources  they  are  using  as  taken  as  a  sample  for
Belojiganfoy Woreda town  is  656  metres which  is  much  higher figure.
From  physical  and  chemical  water  quality  analysis  made  i n  lab  and  which  was  taken
from  FHI  the  water  quality  approximately  fulfills  the  WHC  standards  except  for  some
parameters  like  nitrate,  nitrite,  Iron  and  Manganese .
Key  words:  sustainability,  community participation,  Operation  and
Maintenance,  Spare  parts,  Kamasi
Tunable Double Negative Band Structure from Non-Magnetic Coated Rods
Creators: name: Chen, Yue
name: Lipton, Robert
Publisher: name: arXiv
Year: 2010
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences
subject: 35Q60

description: A system of periodic poly-disperse coated nano-rods is considered. Both the coated nano-rods and host material are non-magnetic. The exterior nano-coating has a frequency dependent dielectric constant and the rod has a high dielectric constant. A negative effective magnetic permeability is generated near the Mie resonances of the rods while the coating generates a negative permittivity through a field resonance controlled by the plasma frequency of the coating and the geometry of the crystal. The explicit band structure for the system is calculated in the sub-wavelength limit. Tunable pass bands exhibiting negative group velocity are generated and correspond to simultaneously negative effective dielectric permittivity and magnetic permeability. These can be explicitly controlled by adjusting the distance between rods, the coating thickness, and rod diameters.
The limit distribution of the maximum increment of a random walk with regularly varying jump size distribution
Creators: name: Mikosch, Thomas
name: Račkauskas, Alfredas
Publisher: name: arXiv
Year: 2010
Subjects: subject: Statistics Theory (math.ST)
subject: FOS: Mathematics

description: In this paper, we deal with the asymptotic distribution of the maximum increment of a random walk with a regularly varying jump size distribution. This problem is motivated by a long-standing problem on change point detection for epidemic alternatives. It turns out that the limit distribution of the maximum increment of the random walk is one of the classical extreme value distributions, the Fréchet distribution. We prove the results in the general framework of point processes and for jump sizes taking values in a separable Banach space.
description: Published in at http://dx.doi.org/10.3150/10-BEJ255 the Bernoulli (http://isi.cbs.nl/bernoulli/) by the International Statistical Institute/Bernoulli Society (http://isi.cbs.nl/BS/bshome.htm)
Local Volatility Model for Pricing Callable Quanto Option
Creators: name: Lee, David
Publisher: name: Zenodo
Year: 2022
Subjects: Local Volatility Model for Pricing Callable Quanto Option

description: We review a model for computing the price, in the domestic currency, of European standard call and put options on an underlying foreign equity (stock or index) with tenor of up to 7 years. The function implements a local volatility based pricing method.
description: https://ia904701.us.archive.org/21/items/prepayment-neural-net/PrepaymentNeuralNet.pdf
Observing the phase space trajectory of an entangled matter wave packet
Creators: name: Poschinger, Ulrich
name: Walther, Andreas
name: Singer, Kilian
name: Schmidt-Kaler, Ferdinand
Publisher: name: arXiv
Year: 2010
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We observe the phase space trajectory of an entangled wave packet of a trapped ion with high precision. The application of a spin dependent light force on a superposition of spin states allows for coherent splitting of the matter wave packet such that two distinct components in phase space emerge. We observe such motion with a precision of better than 9% of the wave packet extension in both momentum and position, corresponding to a 0.8 nm position resolution. We accurately study the effect of the initial ion temperature on the quantum entanglement dynamics. Furthermore, we map out the phonon distributions throughout the action of the displacement force. Our investigation shows corrections to simplified models of the system evolution. The precise knowledge of these dynamics may improve quantum gates for ion crystals and lead to entangled matter wave states with large displacements.
description: 5 pages, 3 figures
“It Doesn’t Feel Like a Natural Fit”: Co-operating Teachers Account for Their Evaluation and Assessment of Pre-service Teachers’ Efforts to Fulfill Social Justice Indicators
Creators: name: Mulholland, Valerie Lyn
name: Salm, Twyla
Publisher: name: Alberta Journal of Educational Research
Year: 2017

description: Teacher education has long been troubled by the problem of reconciling what happens in course work with how that learning is taken up in practicum experiences. Our faculty asks co-operating teachers to account for interns’ professional growth by the extent to which the interns meet the requirements of the Internship Placement Profile (IPP). The study focuses on the eight IPP items which relate directly to “teaching for social justice.” The theoretical framework draws upon the literature of anti-oppressive/anti-racist pedagogies. Co-operating teachers and interns are expected to rely on the field manual that lists descriptors for each item of the IPP to assess growth and to set goals. The objective to understand how co-operating teachers perceive their intern’s ability to teach for social justice and reach their final evaluation was modified to reflect the finding that cooperating teachers were sometimes less familiar with these principles than were the interns. La formation des enseignants a depuis longtemps été affectée par le problème qui consiste à concilier le travail en classe et l’application de cet apprentissage pendant les stages. Notre faculté demande aux enseignants coopérants de rendre compte du développement professionnel des stagiaires en notant la mesure dans laquelle ceux-ci répondent aux exigences du profil du stage (Internship Placement Profile -IPP). Cette étude porte sur les huit items du IPP qui touchent directement l’enseignement qui vise la justice sociale. Le cadre théorique puise dans la littérature des pédagogies anti-oppressives/anti-racistes. L’on s’attend à ce que les enseignants coopérants et les stagiaires évaluent la croissance et fixent des objectifs en s’appuyant sur le manuel qui contient la liste de descripteurs pour chaque item du IPP. L’objectif touchant l’évaluation par les enseignants coopérants de la capacité des stagiaires d’enseigner la justice sociale a été modifié de sorte à tenir compte de la constatation que les enseignants coopérants connaissaient parfois moins bien ces principes que les stagiaires.
description: Alberta Journal of Educational Research, Vol. 63 No. 1 (2017): Spring 2017
N  PARTIAL  FULFILLMENT  OF  THE  REQUIREMENT  OF  DEGREE  OF  MASTERS  OF  SCIENCE  IN  HYDRAULIC/HYDROPOWER  ENGINEERING  January 200
Creators: name: Endalkachew Dechassa Senbetu
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2006

description: Evaluating  the  sustainability  of  schemes  already  implemented  and  to  look  forward  to
what  actions  to  be  taken  is  necessary.  In  this  study  the  sustainability  of  water  supply
schemes  in  Kamashi  zone  of  Benishangul  Gumuz  Regional  State  was  seen  from  the
documents  available  about the  water supply situation  in  the  area.  The  study  is  made  by
the  use  of  both  secondary  information  and  primary  data  collected  from  field  with  a  visit
to  the  sites.  Most water supply systems  are  concentrated  around  urban  centers  .
Indices  were taken  from  similar studies  and  used  to  assess  sustainability  and  they  show
that  the  situation  in  water  supply  is  below  the  standard.  Moreover,  from  sustainability
analysis  of  schemes  it  is  seen  that  the  systems  established  are  not  functioning  the
community  to  the  standard.  From  the  study  it  was  also - seen  that  the  most  frequently
,  ·  failing  parts  of  schemes  are  the  0-ring,  U-seal  and  crack  on  PVC  pipes  for  the  hand
pumps  and  unavailability  of  night  storage  to  accommodate  the  freely  flowing  water
during  non-service  hours.
The  challenges  and  problems  identified  as  aggravating  the  failure  of  water  supply
schemes  are:  poor organizational  structures  and  low  profile  of  O&M,  lack  of  spare  parts
within  the  local  market,  lack  of  trained  personnel,  inaccessibility  of  many  of  the
community  villages  and  loose  contact  between  the  central  bureaus  in  the  region  and
sector  bureaus  at  Woreda  level.  The  average  number  of  users  on  hand  pumps  is  325
I·  I  households  and  the  actual  yield  of  the  pumps for which field  measurement was  taken  is
.•/
,,
\;.
i '
0.161itres  per second  and  for  springs  it  was  0.1  Olitres  per  second.  The  average  distance
of  households  from  the  water  sources  they  are  using  as  taken  as  a  sample  for
Belojiganfoy Woreda town  is  656  metres  which  is  much  higher figure.
From  physical  and  chemical  water  quality  analysis  made  in  lab  and  which  was  taken
from  FHI  the  water  quality  approximately  fulfills  the  WHC  standards  except  for  some
parameters  like  nitrate,  nitrite,  Iron  and  Manganese.
Key  words:  sustainability,  community participation,  Operation  and
Mainteoance,  Spare  parts,  Kamashi
Young Carers’ Educational Experiences and Support: A Roadmap for the Development of School Policies to Foster their Academic Success
Creators: name: Lakman, Yana
name: Chalmers, Heather
name: Sexton, Cayleigh
Publisher: name: Alberta Journal of Educational Research
Year: 2017

description: Young Carers (YCs) provide care for ill, disabled, or addicted family member(s) and may experience risk to their educational success. This study examined 145 YCs in Southern Ontario, aged 8-18, using surveys and found that many YCs considered school important and were doing well academically whereas some YCs’ education was negatively impacted. Correlational analyses revealed associations between caregiving time and missed school (r =.18, p = .030) as well as limit on future aspirations (r = .2120, p = .029). ANOVA analyses revealed that elementary-aged females placed higher importance on school than males (2 = .08, p = .036). Results also revealed that many YCs would use a variety of school services if offered, but over half would still prefer to maintain their caregiving role as a secret. Further findings and recommendations for supporting academic achievement are offered. Les jeunes aidants (YC – Young Carers) qui offrent des soins aux membres de leur famille qui sont malades, handicapés ou dépendants peuvent mettre à risque leur réussite éducative. Cette étude a porté sur 145 YC vivant dans le Sud de l’Ontario et âgés de 8 à 18 ans. À l’aide d’enquêtes, nous avons trouvé que plusieurs jeunes aidants considéraient l’école importante et réussissaient bien leurs études, mais que l’éducation de certains jeunes aidants était touchée négativement. Des analyses corrélationnelles ont révélé des associations entre le temps consacré à la prestation de soins et les absences à l’école d’une part (r =.18, p = .030) et les limites sur les projets d’avenir (r = .2120, p = .029). Des analyses ANOVA ont révélé que les étudiantes à l’élémentaire accordent une plus grande importance à l’école que leurs pairs masculins (2 = .08, p = .036). Les résultats ont également révélé que plusieurs YC profiteraient de divers services scolaires s’ils étaient offerts, mais plus de la moitié d’eux préféraient garder leur rôle d’aidant secret. Nous présentons d’autres résultats et offrons des recommandations pour appuyer les performances scolaires.
description: Alberta Journal of Educational Research, Vol. 63 No. 1 (2017): Spring 2017
THE  CASE  OF  KAMASHI  ZONE  OF  BENISHANGUL GUMUZ  REGIONAL STATE
Creators: name: ENDALKACHEW DECHASSA
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2005

description: Supplying  water  for  a  community  is  very  essential  and  especial  emphasis  is  to
be  given  to  remote  areas  where  the  community  is  suffering  a  lot.  To  do  so
evaluating  the  sustainability  of  schemes  already  implemented  and  to  look
forward  to  what actions  to  be  taken  is  necessary.
In  this  study the  water supply schemes  in  Kamashi  zone  of  Benishangul  Gumuz
I
Regional  State  was  seen  from  the  documents  available  about  the  water  supply
situation  in  the  area.  As  can  be  seen  from  maps  showing  the  distribution  of
water  supply  systems  most  of  the  systems  are  concentrated  around  urban
centres.  From  the  study  it  was  see - n  that .  the  most  frequently  failing  parts  of
schemes  are  the  0-ring,  U-seal  and  crack  on  PVC  pipes  for  the  hand  pumps
and  unavailability  of  night  storage  to  accommodate  the  freely  flowing  water
during  non-service  hours  for  developed  springs.  As  was  seen,  the  challenges
and  problems  identified  as  aggravating  the  failure  of  water supply schemes  are:
poor organizational  structures  and  low  profile  of  O&M,  lack  of  spare  parts  within
the  local  market,  lack  of  trained  personnel,  inaccessibility  of  many  of  the
community  villages,  non-involvement  of  the  users,  inappropriate  tariff  collection
systems  and  loose  contact  between  the  central  bureaus  in  the  region  and
sector  bureaus  at  Woreda  level.  The  average  number of  users  on  hand  pumps
is  325  households  and  the  actual  yield  of  the  pumps  for  which  field
measurement  was  taken  is  0.161itres  per  second  and  for  springs  it  was
0.1  Olitres  per  second.  The  average  distance  of  households  from  the  water
sources  they  are  using  as  taken  as  a  sample  for  Belojiganfoy  Woreda town  is
656.2  metres  which  is  much  higher  figure.  From  physical  and  chemical  water
quality  analysis  made  in  lab  and  which  was  taken  from  FHI  the  water  quality
approximately  fulfills  the  WHO  standards  except  for  some  parameters  like
nitrate,  nitrite,  Iron  and  Manganese.
Key  words:  sustainability,  hand  pump,  community  participation,  Operation  and
Maintenance,  Spare parts,  Kamashi
Amidate and ureate complexes of nickel : harnessing ligand design to understand the mecha(Ni)sm of C-H bond activation
Creators: name: Beattie, Douglas Dawson
Publisher: name: University of British Columbia
Year: 2019

description: This thesis examines the use of hemi-labile amidate and ureate ligands on nickel metal centers in their (+1) and (+2) oxidation states. These 1,3-N,O-chelating ligands were studied both for their coordination chemistry on nickel and their propensity to undergo bond activations, specifically with carbon-hydrogen bonds. In Chapter 1 we discuss the mechanisms of C-H bond activation for nickel centers of different oxidation states. We highlight important works for each oxidation state, with a focus on computational and mechanistic work. The Chapter is broken down by oxidation state. In Chapter 2, we investigate the mechanism of Ni(II) C(sp³)-H bond activation. Using ureas as model substrates, we map the rates of C-H bond activation at Ni(II). We also characterize the nickellated products and investigate the role of additives on the rates of reaction. Comparisons to computational data from the literature are made where appropriate. In Chapter 3 we discuss amides as ligands for low-coordinate Ni(I) organometallics. Using a variety of ligands, we show that substitution of the ligand at both the nitrogen and the carbon backbone dramatically affects the binding mode at Ni(I). We also discuss reactivity with radical species and investigate the mechanism of disproportionation of these complexes. In Chapter 4 we discuss a new method for nickel catalyzed cyanation of aryl chlorides using a simple protocol. The reaction runs at room temperature and is among the mildest conditions to date. We show that XantPhos ligands are the best ligands to this end.
Optical realization of relativistic non-Hermitian quantum mechanics
Creators: name: Longhi, Stefano
Publisher: name: arXiv
Year: 2010
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Light propagation in distributed feedback optical structures with gain/loss regions is shown to provide an accessible laboratory tool to visualize in optics the spectral properties of the one-dimensional Dirac equation with non-Hermitian interactions. Spectral singularities and PT symmetry breaking of the Dirac Hamiltonian are shown to correspond to simple observable physical quantities and related to well-known physical phenomena like resonance narrowing and laser oscillation.
description: 4 pages
Twin-core fiber sensor integrated in laser cavity
Creators: name: Amorebieta, Josu
name: Pereira, Joao
name: Durana, Gaizka
name: Franciscangelis, Carolina
name: Ortega-Gómez, Ángel
name: Zubia, Joseba
name: Villatoro, Joel
name: Margulis, Walter
Publisher: name: arXiv
Year: 2024
Subjects: subject: Optics (physics.optics)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: In this work, we report on a twin-core fiber sensor system that provides improved spectral efficiency, allows for multiplexing and gives low level of crosstalk. Pieces of the referred strongly coupled multicore fiber are used as sensors in a laser cavity incorporating a pulsed semiconductor optical amplifier (SOA). Each sensor has its unique cavity length and can be addressed individually by electrically matching the periodic gating of the SOA to the sensors cavity roundtrip time. The interrogator acts as a laser and provides a narrow spectrum with high signal-to-noise ratio. Furthermore, it allows distinguishing the response of individual sensors even in the case of overlapping spectra. Potentially, the number of interrogated sensors can be increased significantly, which is an appealing feature for multipoint sensing.
Kondo lattices with inequivalent local moments: Competitive vs. co-operative Kondo screening
Creators: name: Benlagra, Adel
name: Fritz, Lars
name: Vojta, Matthias
Publisher: name: arXiv
Year: 2011
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: While standard heavy fermion metals feature a single spin-1/2 local moment per unit cell, more complicated systems with multiple distinct local moments have been synthesized as well, with Ce_3Pd_20(Si,Ge)_6 being one example. Here, we discuss the physics of a Kondo lattice model with two local-moment sublattices, coupled with different Kondo couplings to conduction electrons. The phase diagram will be strongly modified from that of the standard Kondo lattice if the characteristic screening temperatures of the distinct moments are well separated. Therefore, we investigate the interplay between the two Kondo effects using a local self-energy approximation via slave bosons. We find that the two Kondo effects can either compete or co-operate depending on the conduction-band filling. In the regime of competition, small differences in the two Kondo couplings can lead to huge differences in the respective Kondo scales, due to non-trivial many-body effects. We also study the low-temperature properties of the collective heavy Fermi-liquid state and propose a connection to depleted Kondo lattice systems.
description: 14 pages, 15 figures
Teachers who Initiate Changes with an Ebook-Integrated Curriculum: Revisiting the Developmental Assumptions of Stages of Concerns in the Concerns-Based Adoption Model
Creators: name: Min, Mina
Publisher: name: Alberta Journal of Educational Research
Year: 2017

description: Understanding teachers’ concerns about integrating new technology to their curricular practices is essential for the improvement of pedagogical practices. Using in-depth interviews, this study aims 1) to explore and describe concerns of teachers who attempted to initiate ebook-integrated curriculum independently in a higher education setting, and 2) to examine how well the Stages of Concerns (SoC) in Concerns-Based Adoption Model (CBAM) explains the change processes of the teachers. This study challenges the developmental assumptions underlying the SoC in CBAM and suggests that the theoretical framework must address individuals’ idiosyncratic traits as a contextual factor to better explain the change processes of teachers who initiate change in higher education. Additionally, future research directions pertaining to the adoption of innovations by teachers are suggested. Afin d’améliorer les pratiques pédagogiques, il est essentiel de comprendre les préoccupations qu’ont les enseignants par rapport à l’intégration de la nouvelle technologie à leurs pratiques pédagogiques. Reposant sur des entrevues en profondeur, cette étude a comme objectif, d’une part, d’explorer et de décrire les préoccupations d’enseignants qui ont tenté, de façon autonome, d’initier un programme d’études intégrant des livres électroniques dans un milieu universitaire, et d’autre part, d’examiner la mesure dans laquelle les étapes de préoccupation du modèle d’adoption reposant sur les préoccupations (Concerns-Based Adoption Model – CBAM) réussissent à expliquer les processus de changement chez les enseignants. Cette étude remet en question les hypothèses développementales sur lesquelles sont fondées les étapes de préoccupation du CBAM et propose que le cadre théorique doit considérer l’idiosyncrasie des gens comme facteur contextuel pour mieux comprendre les processus de changement des enseignants qui initient des changements dans les milieux universitaires. Nous proposons également des orientations de recherche à l’avenir portant sur l’adoption d’innovations par les enseignants.
description: Alberta Journal of Educational Research, Vol. 63 No. 1 (2017): Spring 2017
Dynamics in the production of superheavy nuclei in low-energy heavy-ion collisions
Creators: name: Feng, Zhao-Qing
name: Jin, Gen-Ming
name: Li, Jun-Qing
Publisher: name: arXiv
Year: 2011
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We present a review of the recent progress of theoretical models on the description of the formation of superheavy nuclei in collisions of heavy systems. Two sorts of reactions that are the fusion-evaporation mechanism and the massive damped collisions to produce superheavy nuclei are discussed. Problems and further improvements of the capture of colliding partners, the formation of compound nucleus and the de-excitation process are pointed out. Possible combinations in the synthesis of the gap of the cold fusion and $^{48}$Ca induced reactions are proposed by the calculations based on the dinuclear system model and also compared with other approaches. The synthesis of neutron-rich heavy isotopes near sub-shell closure N=162 via transfer reactions in the damped collisions of two actinides and the influence of shell closure on the production of heavy isotopes are investigated. Prospective possibility to reach superheavy nuclei near N=184 via neutron-rich radioactive beams of high intensity in the future is discussed.
description: 22 pages, 17 figures
The finite-temperature thermodynamics of a trapped unitary Fermi gas within fractional exclusion statistics
Creators: name: Qin, Fang
name: Chen, Ji-sheng
Publisher: name: arXiv
Year: 2010
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We utilize a fractional exclusion statistics of Haldane and Wu hypothesis to study the thermodynamics of a unitary Fermi gas trapped in a harmonic oscillator potential at ultra-low finite temperature. The entropy per particle as a function of the energy per particle and energy per particle versus rescaled temperature are numerically compared with the experimental data. The study shows that, except the chemical potential behavior, there exists a reasonable consistency between the experimental measurement and theoretical attempt for the entropy and energy per particle. In the fractional exclusion statistics formalism, the behavior of the isochore heat capacity for a trapped unitary Fermi gas is also analyzed.
description: 6 pages, 6 figures
Quantum Faraday Effect in Double-Dot Aharonov-Bohm Ring
Creators: name: Kang, Kicheon
Publisher: name: arXiv
Year: 2011
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We investigate Faraday's law of induction manifested in the quantum state of Aharonov-Bohm loops. In particular, we propose a flux-switching experiment for a double-dot AB ring to verify the phase shift induced by Faraday's law. We show that the induced {\em Faraday phase} is geometric and nontopological. Our study demonstrates that the relation between the local phases of a ring at different fluxes is not arbitrary but is instead determined by Faraday's inductive law, which is in strong contrast to the arbitrary local phase of an Aharonov-Bohm ring for a given flux.
description: Submitted to Phys. Rev. Lett
Invisibility in non-Hermitian tight-binding lattices
Creators: name: Longhi, Stefano
Publisher: name: arXiv
Year: 2010
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Reflectionless defects in Hermitian tight-binding lattices, synthesized by the intertwining operator technique of supersymmetric quantum mechanics, are generally not invisible and time-of-flight measurements could reveal the existence of the defects. Here it is shown that, in a certain class of non-Hermitian tight-binding lattices with complex hopping amplitudes, defects in the lattice can appear fully invisible to an outside observer. The synthesized non-Hermitian lattices with invisible defects possess a real-valued energy spectrum, however they lack of parity-time (PT) symmetry, which does not play any role in the present work.
description: to appear in Phys. Rev. A
title: Ð Ð°Ð·ÑÐ°Ð±Ð¾ÑÐºÐ° Ð¿ÑÐ¸Ð±Ð¾ÑÐ° Ð´Ð»Ñ Ð¸Ð·Ð¼ÐµÑÐµÐ½Ð¸Ñ ÑÐµÐ¼Ð¿ÐµÑÐ°ÑÑÑÑ Ð½Ð° Ð¾ÑÐ½Ð¾Ð²Ðµ Ð¼Ð¸ÐºÑÐ¾ÐºÐ¾Ð½ÑÑÐ¾Ð»Ð»ÐµÑÐ°
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð±Ð°ÐºÐ°Ð»Ð°Ð²ÑÐ°
titleType: Subtitle
title: Design of a microcontroller-based device for temperature measurements
Creators: name: Ð§ÑÐ½ Ð¦Ð·ÑÑ Ñ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: 2022
Subjects: Ð¼Ð¸ÐºÑÐ¾ÐºÐ¾Ð½ÑÑÐ¾Ð»Ð»ÐµÑ
Ð´Ð°ÑÑÐ¸Ðº ÑÐµÐ¼Ð¿ÐµÑÐ°ÑÑÑÑ
ÑÐ¾ÑÐ½Ð¾ÑÑÑ
microcontroller
temperature sensor
accuracy

description: ÐÐ±ÑÐµÐºÑ Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ñ â Ð¿ÑÐ¸Ð±Ð¾Ñ Ð´Ð»Ñ Ð¸Ð·Ð¼ÐµÑÐµÐ½Ð¸Ñ ÑÐµÐ¼Ð¿ÐµÑÐ°ÑÑÑÑ. ÐÑÐµÐ´Ð¼ÐµÑ Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ñ â ÑÐ»ÐµÐ¼ÐµÐ½ÑÐ½Ð°Ñ Ð±Ð°Ð·Ð°, ÑÐ¾ÑÐ½Ð¾ÑÑÑ Ð¸ Ð´Ð¸Ð°Ð¿Ð°Ð·Ð¾Ð½ ÑÐ°Ð±Ð¾ÑÑ Ð´Ð°ÑÑÐ¸ÐºÐ¾Ð² ÑÐµÐ¼Ð¿ÐµÑÐ°ÑÑÑÑ. Ð¦ÐµÐ»Ñ ÑÐ°Ð±Ð¾ÑÑ â Ð Ð°Ð·ÑÐ°Ð±Ð¾ÑÐºÐ° Ð¿ÑÐ¸Ð±Ð¾ÑÐ° Ð´Ð»Ñ Ð¸Ð·Ð¼ÐµÑÐµÐ½Ð¸Ñ ÑÐµÐ¼Ð¿ÐµÑÐ°ÑÑÑÑ Ð½Ð° Ð¾ÑÐ½Ð¾Ð²Ðµ Ð¼Ð¸ÐºÑÐ¾ÐºÐ¾Ð½ÑÑÐ¾Ð»Ð»ÐµÑÐ°. Ð ÑÐ¾Ð´Ðµ ÑÐ°Ð±Ð¾ÑÑ Ð¿ÑÐ¾Ð²ÐµÐ´ÐµÐ½ Ð¾Ð±Ð·Ð¾Ñ Ð¿ÑÐ¸Ð½ÑÐ¸Ð¿Ð¾Ð² Ð¸Ð·Ð¼ÐµÑÐµÐ½Ð¸Ñ ÑÐµÐ¼Ð¿ÐµÑÐ°ÑÑÑÑ Ð¸ ÑÑÐµÐ¼ Ð´Ð°ÑÑÐ¸ÐºÐ¾Ð² ÑÐµÐ¼Ð¿ÐµÑÐ°ÑÑÑÑ. ÐÑÐ±ÑÐ°Ð½Ð° ÑÐ»ÐµÐ¼ÐµÐ½ÑÐ½Ð°Ñ Ð±Ð°Ð·Ð° Ð´Ð»Ñ ÑÐ¾Ð·Ð´Ð°Ð½Ð¸Ñ Ð¿ÑÐ¸Ð±Ð¾ÑÐ° Ð´Ð»Ñ Ð¸Ð·Ð¼ÐµÑÐµÐ½Ð¸Ñ ÑÐµÐ¼Ð¿ÐµÑÐ°ÑÑÑÑ. Ð Ð°Ð·ÑÐ°Ð±Ð¾ÑÐ°Ð½Ð° Ð¿ÑÐ¸Ð½ÑÐ¸Ð¿Ð¸Ð°Ð»ÑÐ½Ð°Ñ ÑÑÐµÐ¼Ð° Ð¿ÑÐ¸Ð±Ð¾ÑÐ° Ð´Ð»Ñ Ð¸Ð·Ð¼ÐµÑÐµÐ½Ð¸Ñ ÑÐµÐ¼Ð¿ÐµÑÐ°ÑÑÑÑ. Ð Ð°Ð·ÑÐ°Ð±Ð¾ÑÐ°Ð½Ð° Ð¿ÑÐ¾Ð³ÑÐ°Ð¼Ð¼Ð° Ð´Ð»Ñ Ð¼Ð¸ÐºÑÐ¾ÐºÐ¾Ð½ÑÑÐ¾Ð»Ð»ÐµÑÐ° Ð´Ð»Ñ ÑÐ¿ÑÐ°Ð²Ð»ÐµÐ½Ð¸Ñ Ð¿ÑÐ¸Ð±Ð¾ÑÐ¾Ð¼. ÐÑÐ¾Ð²ÐµÐ´ÐµÐ½Ð° Ð¿ÑÐ¾Ð²ÐµÑÐºÐ° ÑÐ°Ð±Ð¾ÑÑ ÑÐ¸ÑÑÐµÐ¼Ñ Ð¿ÑÑÐµÐ¼ ÑÐ¼ÑÐ»ÑÑÐ¸Ð¸ Ð² ÑÐ¿ÐµÑÐ¸Ð°Ð»ÑÐ½Ð¾Ð¹ Ð¿ÑÐ¾Ð³ÑÐ°Ð¼Ð¼Ðµ.
description: Object of study â a device for measuring temperatureSubject of study â the element base, accuracy and range of temperature sensors. The aim of the work is the design of a microcontroller-based device for temperature measurements. During the work, a review of the principles of temperature measurement and temperature sensors circuits was done. Element base for creating a device for measuring temperature was selected. An electrical circuit of the device for measuring the temperature was developed. A program for a microcontroller to control the device was developed. The system was tested by emulation in a special program.
Frontier estimation and extreme value theory
Creators: name: Daouia, Abdelaati
name: Florens, Jean-Pierre
name: Simar, Léopold
Publisher: name: arXiv
Year: 2010
Subjects: subject: Statistics Theory (math.ST)
subject: FOS: Mathematics

description: In this paper, we investigate the problem of nonparametric monotone frontier estimation from the perspective of extreme value theory. This enables us to revisit the asymptotic theory of the popular free disposal hull estimator in a more general setting, to derive new and asymptotically Gaussian estimators and to provide useful asymptotic confidence bands for the monotone boundary function. The finite-sample behavior of the suggested estimators is explored via Monte Carlo experiments. We also apply our approach to a real data set based on the production activity of the French postal services.
description: Published in at http://dx.doi.org/10.3150/10-BEJ256 the Bernoulli (http://isi.cbs.nl/bernoulli/) by the International Statistical Institute/Bernoulli Society (http://isi.cbs.nl/BS/bshome.htm)
QOE-Oriented Multimedia Delivery Algorithm for E-Learning in Next Generation Wireless Network
Creators: name: Vasile-Horia, Muntean; Marius, Otesteanu
Publisher: name: Editura Universitara
Year: 2012
Subjects: subject: 0 Social sciences
subject: 37 Education
subject: 371 Instructional design
subject: 004:37 Elearning

description: The paper will describe in detail a novel solution for adaptive multimedia content delivery over wireless networks, the Dynamic Quality-Oriented Adaptation Scheme (DQOAS) which focuses on mobile e-learning. The proposed algorithm concentrates on performing multimedia content management in accordance with end-user learning profile and preferences, also considering the network conditions. By using DQOAS the end-user quality of experience (QoE) during learning process is improved, as shown in previous papers that investigate the benefits of the algorithm when IEEE802.11 networks are used. The paper presents also the behavior of DQOAS for multimedia content delivery in next generation networks and in particular over Long Term Evolution (LTE) networks.
ESTIMATION  OF WATER  BALANCE  COMPONENTS  USING  REMOTE  SENSING  PRODUCTS  IN  THE  UPPER BLUE  NILE,  LAKE  TANA  SUB  BASIN
Creators: name: Fasikaw  Atanaw
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2009

description: Most  hydrological  and  water  resource  simulation  models  require  relatively  accurate
estimation  of  spatially  distributed  rainfall  and  evapotranspiration  data  sets.  This
research  has  been  conducted  with  the  objective  of  producing  these  vital  elements  of
the  water  balance  that  can  be  used  as  an  input  to  the  water  resources  assessment
tools  and  agricultural  water  management.
Spatially  distributed  rainfall  has  been  acquired  from  remotely  sensed  FEWS  data
set.  Ground validation  has  been conducted by  comparing gridded gauged rainfall  data
with  the  remotely  sensed  FEWS  data  set.  As  a  result  the  annual  remotely  sensed
FEWS  data  set  has  been  found  to  underestimate  the  measured  ground  based  data.
The  annual  spatial  mean  rainfall  was  underestimated by  33.2%  and  35%  for  2007  and
2008  respectively.  Therefore  these  biases  of  the  satellite  data  were  adjusted  and  a
spatially  distributed  rainfall  of  1  km  grid  was  obtained.
The  daily  ,  monthly  and  yearly  evapotranspiration  over  the  Tana  sub  basin  has
been  computed  by  Surface  Energy  Balance  System  (SEES)  algorithm  using  MODIS
land surface products and some  ancillary meteorological data with a one  km  resolution
for  the  entire  Lake  Tana  sub-basin.
Open  water  evaporation  of  the  lake  has  been  estimated  with  a  one  km  resolution
from  a  remotely  sensed  data  and  the  spatial  averages  are  1631.67  and  1623.42  mm
for  2007  and  2008  respectively.
The  change  in  storage  estimated  from  the  Topex/Poseidion  Jason-2  lake  level
variation  shows  that  the  lake  has  increased  290  mm  and  reduced  301  mm  in  2007  and
2008  from  the  annual  average  levels  of  2006  and  2007  respectivel
Performance Assessment of  small-scale  irrigation  schemes  based on  the  condition  of  before  and after modernization  (A  case study of  Meka  Small Scale Irrigation  Scheme)
Creators: name: Yalew Belet
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2008

description: his  study  attempted  to  investigate  the  performance  of  Meka  SSI  scheme,  which
is  representative  of  "modern"  community  managed  SSI  Schemes  in  Dry  Dega
Agro-Climatic  Areas  of  North  Shoa  Zone,  Amhara  National  Regional  state.  Field
data  measurements,  household  surveys  and  key  informant  discussions  were
employed  to  investigate  the  extent  to  which  upgrading  of  traditional  irrigation
schemes  improves  its  performance  based  ....  on  · lhe:_eondition  of  before  and  after
.  · '.,.  ;,.
"modernization" .  The  results  indicated . that  - irrigation  iJater  delivery  systems  were
characterized  by  rigid,  inequitable.andunreliable  water  delivery  schedules.  The
weighted  average  application  efficiency,  st�rage'  efficiency  and  distribution
�  ,•  .  .  .  .
uniformity  at  scheme  level  wereffoun_ d  to  be  · 66.10%,  . ..  95.13%  and  67.25%
.  �
. .
respectively.  Low  distribution  uniformity  ....  and-application -sfficiency  coupled  with
;-..._. ;; ..  .,...  .  :,.
high  storage  efficiency  indicated  high  water  losses  . ....  in  · general,  as  per the  results  of
the  survey,  irrigation  modernization/ upgrading  provided  dramatic  achievements
such  as  increment  in  command  area,  increment  in  water  supply,  introduction  of
water  fee  collection,  greater  confidence  in  the  use  of  inputs ;  and  enhanced
awareness  of  farmers  towards  irrigation  practice.  However,  the  realizations  of  the
benefits  of  modernization  were  constrained  by  ri gid  delivery  schedules,  and  rigid
irrigation  practices.  Thus,  the  adoption  of  improved  hardware  is  not  by  itself
enough  to  attain  high  levels  of  performance.  Therefore,  there  is  a  need  for
im provement  in  the  design  of  water  applic ation  practices,  irri gation  scheduling
techni ques  and  system  operational  policies  (water  delivery  schedul es)  of  the
irri gation  scheme
TREATMENT OF CONDOMINIUM SEPTIC TANK EFFLUENT WITH CONSTRUCTED WETLAND AT ETHIO FISHERY SITE, ARBA  MINCH, ETHIOPIA
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
-
3-
 -N and for PO4
-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 .