1,593 research outputs found
Cash Equals Education? A Case Study of How a Scholarship to Highland Students in Ratanakiri, Cambodia Promotes Educational Participation
The purpose of this thesis was to explore how a scholarship distributed to upper secondary school students of ethnic minority in Ratanakiri, Cambodia has promoted educational participation. To do this, this thesis analysed studentsâ understanding of the value of education, obstacles to participation and how the scholarship has addressed these obstacles. A qualitative approach was used where data was gathered through individual interviews and focus group discussions with students in Ratanakiri. The data was analysed in relation to the analytical framework that consists of previous research on the topic and by using thematic analysis. The findings show that education was valued by the informants, by reference to its importance for gaining knowledge and having improved future opportunities. Obstacles to participation were found within financial resources, obstacles connected to the school and on individual, family and community levels. The informants understood the scholarship to promote educational participation through reducing expenses, increasing access to education and motivation for participation, improving opportunities to better oneâs academic performance, improving parental and community support for education and raising awareness about the importance of education. However, not all obstacles could be addressed by the scholarship, indicating that further interventions are needed to improve educational participation
VÀlfÀrd hos ren
Renen i Sverige Àr ett semidomesticerat hjortdjur som under tusentals Är har anpassat sig till klimatet
i norr. Alla i Sverige har rÀtt att Àga en ren men det Àr enbart samer som fÄr bedriva renskötsel.
Under renskötselÄret, som bestÄr av Ätta Ärstider, Àr renskötarens frÀmsta uppgift att förflytta renarna
till bra betesmarker och bevaka hjorden. Sedan 1960-talet har renskötseln genomgÄtt stora moderniserade förÀndringar. FrÄn att ha varit en intensiv skötsel med tama renar i mindre hjordar till dagens extensiva renskötsel med mindre tama renar, större hjordar och en tillgÄng till modern teknik
som t.ex. motorfordon.
KlimatförÀndringens effekter och en ökad konkurrens om markerna frÄn andra nÀringar och intressen pÄverkar renen och rennÀringen negativt. Det leder bland annat till att renarna vintertid behöver
stödutfodras. Stödutfodring innebÀr en ökad stress för djuren, speciellt dÄ de i samband med detta
ofta behöver hÀgnas. HÄllande av ren i hÀgn leder till ett ökat smittryck i hjorden och dÀrmed fler
sjuka djur.
DjurvÀlfÀrd handlar om hur djur mÄr. Det finns flera definitioner av djurvÀlfÀrd och de kan delas in
i tre olika approacher. Den första menar att djurets vÀlfÀrd Àr god om dess fysiska hÀlsa Àr god, den
andra utgÄr frÄn djurets kÀnslor och att positiva kÀnslor Àr förenat med god djurvÀlfÀrd och den
tredje approachen föresprÄkar att god djurvÀlfÀrd uppnÄs nÀr djur fÄr leva i enlighet med sin sanna
natur. De flesta av dagens forskare Àr överens om att alla tre approacher ska inkluderas i definitionen
av god djurvÀlfÀrd. Med en god djurvÀlfÀrd följer en god hÀlsa. För att bedöma djurvÀlfÀrd anvÀnds
det ofta standardiserade protokoll för det specifika djurslaget som bedömaren utgÄr frÄn. Det övergripande syftet med detta examensarbete var att sammanstÀlla litteraturen inom omrÄdet och pÄ sikt
öka kunskapen om djurvÀlfÀrd hos ren. Det mer specifika syftet var att lÀgga fram ett förslag till ett
bedömningsprotokoll som kan anvÀndas för en systematisk djurvÀlfÀrdsbedömning av ren i fÀlt,
samt att ta fram ett förslag till en enkÀt som kan anvÀndas för att fÄ en uppdaterat information om
djurvÀlfÀrden hos svenska renar och Àven undersöka hur renÀgare bedömer djurvÀlfÀrd i praktiken.
I litteratursökningen hittades fÄ artiklar om djurvÀlfÀrdsbedömning pÄ ren. De bedömningsprotokoll
som tagits fram i examensarbete har dÀrför baserats pÄ de protokoll som finns för nötkreatur men
med hÀnsyn till de stora skillnaderna i typ av djurhÄllning och djurslagen som sÄdana.
Konklusionen av litteraturstudien Àr att för att upprÀtthÄlla en god djurvÀlfÀrd och undvika sjukdom
krÀvs det en ökad kontroll, kunskap och forskning om de sjukdomar och andra djurvÀlfÀrdsproblem
som drabbar ren. Protokollet som utvecklats för djurvÀlfÀrdsbedömning av ren skulle kunna underlÀtta ett systematiskt insamlande av data kring djurvÀlfÀrdslÀget hos ren i olika situationer, i första
hand inom det aktuella forskningsprojektet vid Statens veterinĂ€rmedicinska anstalt (SVA) âAllvarliga infektionssjukdomar i öga och mun pĂ„verkar djurvĂ€lfĂ€rden hos svenska renarâ. PĂ„ sikt skulle
protokollet ocksÄ kunna anvÀndas av andra forskare, renÀgare, rÄdgivare och myndigheter med intresse för renarnas vÀlfÀrd. Detta skulle i förlÀngningen kunna stÀrka djurvÀlfÀrden, bl.a. genom att
öka möjligheterna att förebygga sjukdom samt att tidigt fÄnga upp individer som Àr nedsatta och
/eller blivit utsatta för stress en lÀngre tid, och dÄ vidta relevanta ÄtgÀrder. Det finns dock svÄrigheter
med att bedöma vÀlfÀrd hos ren i praktiken. Exempel pÄ detta Àr vÀderförhÄllanden och begrÀnsad
tamhet hos djuren. Det kan leda till att bedömaren inte kan se djuren tillrÀckligt bra och/eller under
en tillrÀckligt lÄng tid samt att enskilda individer inte kan sÀrskiljas, vilket Àr nÄgot som krÀvs för
att kunna utföra en rÀttvis djurvÀlfÀrdsbedömning.
Med hjÀlp av den enkÀt som tagits fram inom ramen för detta arbete skulle kunskapen om vÀlfÀrd,
hÀlsolÀge och djurvÀlfÀrdsbedömning hos svenska renar kunna förbÀttras. Förhoppningen Àr att detta
examensarbete kan vara en steg mot att lyfta vikten av att upprÀtthÄlla och arbeta mot en god djurvÀlfÀrd hos ren. LikasÄ vilka fördelar det innebÀr att genomföra systematiska djurvÀlfÀrdsbedömningar samt att arbeta förbyggande och tillsammans.The reindeer in Sweden is a semi-domesticated deer that has adapted to the climate in the north for
thousands of years. Every Swedish citizen has the right to own a reindeer, but only person with Sami
origin is allowed to conduct reindeer husbandry. During the reindeer husbandry year, which consists
of eight seasons, the reindeer herder's main task is to move the reindeer to good pastures and guard
the herd. Since the 1960s, reindeer husbandry has undergone major modernized changes. From
being an intensive care with domestic reindeer in smaller herds to today's extensive reindeer husbandry with smaller domestic reindeer, larger herds and an access to modern technology such as
motor vehicle.
The effects of climate change and increased competition for land from other industries and interests
have a negative effect on reindeer and reindeer husbandry. Among other things, this means that the
reindeer need to be fed in support during the winter. Support feeding means increased stress for the
animals, especially as they often need to be fenced in connection with this. Keeping reindeer in
enclosures leads to an increased infection pressure in the herd and thus more sick animals.
Animal welfare is about how animals feel. There are several definitions of animal welfare and they
can be divided into three different approaches. The first is that the animal's welfare is good if its
physical health is good, the second is based on the animal's feelings and that positive emotions are
associated with good animal welfare and the third approach advocates that good animal welfare is
achieved when animals are allowed to live according to their true nature. Most of today's researchers
agree that all three approaches should be included in the definition of good animal welfare.
With good animal welfare comes good health. To assess animal welfare, the standardized protocols
for the specific species of animal on which the assessor is based are often used. The overall purpose
of this thesis was to compile and in the long run increase the knowledge about animal welfare in
reindeer. The more specific purpose was to present a proposal for an assessment protocol that can
be used for a systematic animal welfare assessment of reindeer in the field, and to produce a proposal
for a survey that can be used to investigate the situation regarding animal welfare in Swedish reindeer and also investigate how reindeer owners assess animal welfare in practice.
In the literature search, few articles on animal welfare assessment were found on reindeer. The assessment protocols developed in the degree project have therefore been based on the protocols that
exist for cattle, but with regard to the large differences in the type of animal husbandry and the
animal species as such.
The conclusion of the literature study is that in order to maintain good animal welfare and avoid
disease, increased control, knowledge and research is required about the diseases and other animal
welfare problems that affect reindeer. The protocol developed for animal welfare assessment of
reindeer could facilitate a systematic collection of data on the animal welfare status of reindeer in
various situations, primarily within the current research project at the Swedish Veterinary Institute
(SVA) "Serious infectious diseases of the eye and mouth affect animal welfare in Swedish". In the
long run, the protocol could also be used by other researchers, reindeer owners, advisers and authorities with an interest in reindeer welfare. This could in the long run strengthen animal welfare, e.g.
by increasing the possibilities of preventing disease and early detection of individuals who are imAbstract
paired and / or exposed to stress for a longer period of time, and then take relevant measures. However, there are difficulties in assessing the welfare of reindeer in practice. Examples of this are
weather conditions and limited tameness in the animals. This can lead to the assessor not being able
to see the animals well enough and / or for a sufficiently long time and to individuals not being able
to be distinguished, which is something that is required to be able to perform a fair animal welfare
assessment.
With the help of the questionnaire developed within the framework of this work, knowledge about
welfare, health status and animal welfare assessment in Swedish reindeer could be improved. The
hope is that this thesis can be a step towards raising the importance of maintaining and working
towards a good animal welfare in reindeer. Also what benefits it entails to carry out systematic
animal welfare assessments and to work preventively and together
Storage and on-demand release of microwaves using superconducting resonators with tunable coupling
We present a system which allows to tune the coupling between a
superconducting resonator and a transmission line. This storage resonator is
addressed through a second, coupling resonator, which is frequency-tunable and
controlled by a magnetic flux applied to a superconducting quantum interference
device (SQUID). We experimentally demonstrate that the lifetime of the storage
resonator can be tuned by more than three orders of magnitude. A field can be
stored for 18 {\mu}s when the coupling resonator is tuned off resonance and it
can be released in 14 ns when the coupling resonator is tuned on resonance. The
device allows capture, storage, and on-demand release of microwaves at a
tunable rate.Comment: 5 pages, 3 figure
Resonant and off-resonant microwave signal manipulation in coupled superconducting resonators
We present an experimental demonstration as well as a theoretical model of an
integrated circuit designed for the manipulation of a microwave field down to
the single-photon level. The device is made of a superconducting resonator
coupled to a transmission line via a second frequency-tunable resonator. The
tunable resonator can be used as a tunable coupler between the fixed resonator
and the transmission line. Moreover, the manipulation of the microwave field
between the two resonators is possible. In particular, we demonstrate the
swapping of the field from one resonator to the other by pulsing the frequency
detuning between the two resonators. The behavior of the system, which
determines how the device can be operated, is analyzed as a function of one key
parameter of the system, the damping ratio of the coupled resonators. We show a
good agreement between experiments and simulations, realized by solving a set
of coupled differential equations.Comment: 10 pages, 6 figure
Biogeographic patterns of avian malaria parasites in the Lesser Antilles: Prevalence, diversity, and community composition
We investigated determinants of local and regional species richness and community composition of avian malaria parasites (Haemoproteus and Plasmodium) in the Lesser Antilles. Chapter 1 addresses the local parasite richness and community structure, or lack thereof, on Barbados. We found only two parasite lineages on this island, one of which was recovered from only 2 birds, which stands in stark contrast to the much higher diversity on other islands. In addition, we investigated what factors may explain the absence of avian malaria in southeastern Barbados, and found this area to be drier, warmer, and supporting less vegetation. Chapter 2 addresses parasite diversity, primarily beta diversity, in the Lesser Antilles. In this chapter, we investigated the role of host history and compound communities in structuring local ensembles. We found that host genetic distance does not correlate with ensemble dissimilarity but that more phylogeographically structured host species exhibit more unique parasite ensembles compared to the compound community than do hosts that are not phylogeographically structured, suggesting that host history does influence parasite ensembles
Community organization of avian malaria parasites in lowland Amazonia: Prevalence, diversity, and specialization in a local assemblage
I characterized a lowland Amazonian assemblage of haemosporidian (âmalariaâ) parasites (Haemoproteus and Plasmodium) of understory birds by analyzing variation in prevalence (proportion of infected host individuals) among years and host species, documenting diversity of haemosporidian evolutionary lineages, and quantifying host specialization. Using standard molecular methods to screen for haemosporidia in 2488 individual birds from 104 species in the Tiputini Biodiversity Station, Ecuador, I found 21.7% to be infected. Prevalence ranged significantly among years and host species. Forty-five putative evolutionary lineages of haemosporidia were identified, by sequencing part of the cytochrome b (cyt b) gene. Based on a comparative analysis, among host species variation in haemosporidian prevalence related positively to level of sexual dimorphism and negatively to foraging height. I assigned 385 parasite individuals to cyt b lineages. These exhibited a wide range of abundance (one to 91 individuals) and host specialization (one to 23 host species). I quantified host specificity by incorporating both phylogenetic relationships (based on genetic data) and frequency distribution among hosts. Based on null model comparisons, six haemosporidian lineages were more specialized than expected by chance. The hosts of these six haemosporidian lineages were on average more abundant than hosts of generalist lineages, but average body size and survival rate did not differ between hosts of specialists and hosts of generalists. Host specificity was also phylogenetically conserved among haemosporidia. Consequently, I performed a comparative regression analysis, controlling for the effect of parasite phylogeny, and found no relationships between host specificity and host abundance, body size, or survival rate. Finally, I applied network analysis in combination with null models to test whether the level of reciprocal specialization (where one parasite lineage associates with only one bird species, which harbors no other parasite lineages) is greater in this tropical assemblage than it is in an equivalent temperate assemblage. Assuming coevolution proceeds towards reciprocal specialization, it should be greater in the tropics, where coevolution has historically been hypothesized to be more important in species diversification. I found no evidence for this hypothesis; instead, reciprocal specialization was greater in the temperate site
Period-tripling subharmonic oscillations in a driven superconducting resonator
We have observed period-tripling subharmonic oscillations, in a
superconducting coplanar waveguide resonator operated in the quantum regime,
. The resonator is terminated by a tunable inductance
that provides a Kerr-type nonlinearity. We detected the output field
quadratures at frequencies near the fundamental mode, GHz, when the resonator was driven by a current at with an
amplitude exceeding an instability threshold. The output radiation was
red-detuned from the fundamental mode. We observed three stable radiative
states with equal amplitudes and phase-shifted by . The
downconversion from to is strongly enhanced by resonant
excitation of the second mode of the resonator, and the cross-Kerr effect. Our
experimental results are in quantitative agreement with a model for the driven
dynamics of two coupled modes
Twin paradox with macroscopic clocks in superconducting circuits
We propose an implementation of a twin paradox scenario in superconducting
circuits, with velocities as large as a few percent of the speed of light.
Ultrafast modulation of the boundary conditions for the electromagnetic field
in a microwave cavity simulates a clock moving at relativistic speeds. Since
our cavity has a finite length, the setup allows us to investigate the role of
clock size as well as interesting quantum effects on time dilation. In
particular, our theoretical results show that the time dilation increases for
larger cavity lengths and is shifted due to quantum particle creation.Comment: 6 pages, 3 figures. I. F. previously published as I. Fuentes-Guridi
and I. Fuentes-Schulle
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