5,423 research outputs found
The qualitative assessment of responsiveness to environmental challenge in horses and ponies.
The responsiveness of 10 horses and 10 ponies to environmental challenge (represented by an open field
test) was assessed using a qualitative approach based on free choice profiling methodology (FCP), which
gives observers complete freedom to choose their own descriptive terms. Data were analysed with
generalised Procrustes analysis (GPA), a multivariate statistical technique associated with FCP. A
cross-validation of the outcomes of this approach to data recorded through quantitative behaviour analysis,
and through a questionnaire given to the animalsâ owner/riding instructor, was also performed using
principal component analysis (PCA). Twelve undergraduate students generated their own descriptive
vocabularies, by watching 20 horse/pony video clips lasting 2.5 min each. GPA showed that the consensus
profile explained a high percentage of variation among the 12 observers, and differed significantly from the
mean randomised profile ( p < 0.001). Two main dimensions of the consensus profile were identified,
explaining 60% and 5.2% of the variation between animals, respectively. The 12 observer word charts
interpreting these dimensions were semantically consistent, as they all converged towards the same
meaning, albeit using different terms. The most used term to describe the positive end of axis 1 was
ââquietââ, whereas ââattentiveââ was the best positive descriptor of axis 2. The most frequently used
descriptors for the negative ends of axes 1 and 2 were âânervousââ and ââboredââ, respectively. Thus, axis
1 was labelled as ââquiet/nervousââ and axis 2 was named as ââattentive/boredââ. A marked effect of animal
category was observed on the scores of the animals on the first dimension ( p < 0.001). Horses received
significantly higher scores, and were thus assessed as more quiet and calm, than ponies. Conversely, ponies
tended to receive lower scores on the second dimension ( p < 0.12), therefore they appeared less curious and attentive. The results of the PCA showed that the variables from different types of measurement clearly had
meaningful relationships. For instance, the variables with the highest loading on the positive end of axis 1
were all indicative of tractable and docile animals, whereas axis 2 showed high loadings on the positive end
for variables indicating attentive animals. Qualitative behaviour assessment proved to be an appropriate
methodology for the study of horse behavioural responsiveness, in that it provided a multifaceted
characterisation of horse behavioural expression that was in agreement with other quantitative and
subjective assessments of the animalsâ behaviour
The Vertex detector of the LHCb Experiment: The VeLo
The LHCb experiment is the dedicated b physics experiment of the LHC that will study CP violation and rare b decays. Its vertex detector called VeLo (Vertex Locator) has been designed to achieve an impact parameter resolution of 14ÎŒm + 35ÎŒm/pT and a propertime resolution of 40fsâ1. The main components of the detector and module are introduced focusing on the radiation hard front end Beetle chip, the radiation tolerant silicon sensors and the readout system of the detector. In preliminary testbeam results a resolution of 8ÎŒm and 4ÎŒm for tracks of angle 0.16rad has been measured. Construction, assembly and commissioning are currently on going. The latest commissioning showing the successful performance of the VeLo alignment algorithm
Influence of space allowance on the welfare of weaned buffalo (Bubalus Bubalis) calves
Twenty weaned female buffalo calves were used to evaluate the effect of space allowance in relation to their body surface area on a range of behavioural and physiological parameters. Body surface area in m2 was calculated as 0.12 body weight0.60. Ten calves received 50% of body surface as space allocation (Group 50), 10 others received 90% of body surface area (Group 90). Animals in Group 50 lay with a lower number of outstretched legs than calves in Group 90. Buffaloes from Group 50 were observed standing more frequently than animals from Group 90 ( P < 0.001). The proportions of idling ( P < 0.01) and lying idle observations ( P < 0.001) were higher for Group 90 than for Group 50. Group 90 performed a higher number of non-agonistic interactions than Group 50 ( P < 0.01), whereas the opposite was observed for the number of agonistic interactions ( P < 0.01). When exposed to open field testing, Group 50 animals displayed an increased duration of movement, number of galloping events and more vocalisation. Neither immune responses to phytohemagglutinin and ovalbumin nor the cortisol response to exogenous ACTH were affected by treatment. It was concluded that 50% of body surface area may be an inadequate space allowance for weaned calves
An exploratory study towards development of a new communication strategy for IBS
A ISCTE-IUL Business School (IBS) tem sido objecto de profundos transformaçÔes dos Ășltimos anos por forma a acomodar as mudanças legislativas ocorridas tanto em Portugal como na UniĂŁo Europeia no sequĂȘncia do â Processo de Bolonhaâ. Um dos objectivos da IBS Ă© tornar-se uma importante instituição no mercado Europeu da educação. Para atingir este objectivo, a IBS iniciou uma sĂ©rie de programas de carĂĄcter internacional. Na sua essĂȘncia sĂŁo bons programas embora ainda se verifique uma falta de experiĂȘncia no que concerne Ă sua disponibilização no mercado. Neste contexto, Ă© imperativo o desenvolvimento e a implementação de uma estratĂ©gia de marketing.
Assim, a estratĂ©gia global a adoptar relacionar-se, nomeadamente, com a promoção da Imagem de Marca da IBS. Ao promover a sua imagem, a IBS poderĂĄ uma base sustentada a partir da qual poderĂĄ desenvolver novos programas Internacionais, mantendo uma forte notoriedade e visibilidade nos mercados PortuguĂȘs e Europeu.
Com o objectivo de endereçar esta nova direcção estratĂ©gica a IBS terĂĄ de executar um conjunto de acção que operacionalizem a nova direcção estratĂ©gica. Assim, a IBS deverĂĄ melhorar o seu sĂtio na Internet de modo a que seja Ămpar, deverĂĄ tambĂ©m promover merchandizing, iniciar um programa que enfatize Ă publicidade âboca a bocaâ e ainda criar novas especializaçÔes no quadro dos programas jĂĄ existentes. Afigure-se ainda fundamental a utilização da extensa rede de contactos da instituição no auxĂlio Ă promoção da IBS atravĂ©s da criação de novas formas de divulgação. Este conjunto de acção poderĂĄ servir o objectivo da promoção da Imagem de Marca da IBS como visto ao atingimento dos seus objectivos estratĂ©gicos de longo prazo.The ISCTE-IUL Business School (IBS) has in recent years been changing a lot in order to benefit from the legislative changes that occurred within Portugal and the European Union following the bologna process. One of the goals of the IBS is to become a strong player within the European education industry. In order to achieve this goal the IBS has started new international programs. These international programs are inherently good programs but the IBS may lack experience with regard to the communication of these programs. Therefore, it is necessary to form a coherent communication strategy and corresponding action plan.
The overall strategy to be adopted is to promote the Brand Image of the IBS. By promoting the Brand Image the IBS will have a stable base on which to build further international programs while maintaining the strong position within the Portuguese and European markets.
In order to realize the new strategic direction the IBS has to adopt the corresponding action planning. The IBS should adapt the website to make it more state of the art, the IBS should merchandize and start an endorsement program to support the word-of-mouth advocacy and also to create new specializations within the programs. It is also necessary for the IBS to use their extensive corporate network to create other systems in which to help promotion of the IBS. This action plan will definitely serve the goal of promoting the IBS brand image that will ultimately support the long-term goals of the IBS
A fifty year record of winter glacier melt events in southern Chile, 38°â42°S
Little is known about the frequency and potential mass balance impact of winter glacier melt events. In this study, daily atmospheric temperature soundings from the Puerto Montt radiosonde (41.43°S) are used to reconstruct winter melting events at the glacier equilibrium line altitude in the 38°â42°S region of southern Chile, between 1960 and 2010. The representativeness of the radiosonde temperatures to near-surface glacier temperatures is demonstrated using meteorological records from close to the equilibrium line on two glaciers in the region over five winters. Using a degree-day model we estimate an average of 0.28 m of melt and 21 melt days in the 15 Juneâ15 September period each year, with high inter-annual variability. The majority of melt events are associated with midlatitude migratory high pressure systems crossing Chile and northwesterly flows, that force adiabatic compression and warm advection, respectively. There are no trends in the frequency or magnitude of melt events over the period of record, but the annual frequency of winter melt days shows a significant, although rather weak and probably non-linear, relationship to late winter and early spring values of a multivariate El Niño Southern Oscillation Index (MEI)
Pulse propagation in decorated granular chains: An analytical approach
We study pulse propagation in one-dimensional chains of spherical granules
decorated with small grains placed between large granules. The effect of the
small granules can be captured by replacing the decorated chains by undecorated
chains of large granules of appropriately renormalized mass and effective
interaction between the large granules. This allows us to obtain simple
analytic expressions for the pulse propagation properties using a
generalization of the binary collision approximation introduced in our earlier
work [Phys. Rev. E in print (2009); Phys. Rev. E {\bf 69}, 037601 (2004)]Comment: 10 pages and 12 figure
Vacuum Breakdown near a Black Hole Charged by Hypercritical Accretion
We consider a black hole accreting spherically from the surrounding medium.
If accretion produces a luminosity close to the Eddington limit the hole
acquires a net charge so that electrons and ions can fall with the same
velocity. The condition for the electrostatic field to be large enough to break
the vacuum near the hole horizon translates into an upper limit for the hole
mass, The astrophysical conditions under
which this phaenomenon can take place are rather extreme, but in principle they
could be met by a mini black hole residing at the center of a star.Comment: 6 pages, accepted for publication in the Astrophysical Journa
Observation of two-wave structure in strongly nonlinear dissipative granular chains
In a strongly nonlinear viscous granular chain under conditions of loading
that exclude stationary waves (e.g., impact by a single grain) we observe a
pulse that consists of two interconnected but distinct parts. One is a leading
narrow "primary pulse" with properties similar to a solitary wave in a "sonic
vacuum." It arises from strong nonlinearity and discreteness in the absence of
dissipation, but now decays due to viscosity. The other is a broad, much more
persistent shock-like "secondary pulse" trailing the primary pulse and caused
by viscous dissipation. The medium behind the primary pulse is transformed from
a "sonic vacuum" to a medium with finite sound speed. When the rapidly decaying
primary pulse dies, the secondary pulse continues to propagate in the "sonic
vacuum," with an oscillatory front if the viscosity is relatively small, until
its eventual (but very slow) disintegration. Beyond a critical viscosity there
is no separation of the two pulses, and the dissipation and nonlinearity
dominate the shock-like attenuating pulse which now exhibits a nonoscillatory
front
International Organizations as Normative Agenda Setters: Social Influence and Reputational Costs in the effects of the International Human Rights Regime
This paper focuses on the question of how International Organizations (IOs) influence states. In particular, we assess the role of the mechanism of social influence in shaping statesâ normative (discursive) behavior, by looking at the âreporting procedureâ of the Human Rights Committee (HRC) of the United Nations (UN). Our study finds that in the definition of the substantive content of their âperiodic reports,â states follow the human rights agenda set by the HRC in its âconcluding observations.â In this sense, we provide systematic evidence that shows that, through social influence, even poorly âlegalizedâ IOs can have an influence over state (discursive) practices
- âŠ