86 research outputs found
Balanced scorecard performance assessment in a medical imaging department
The authors present and discuss the development of a strategic management model based on the Balanced Scorecard by Kaplan and Norton to implement in an imaging ward and the relations with Performance Measurement System that allows for the
monitoring of the service's evolution, the alignment of objectives, and the evaluation of individual employees within the strategy of the ward and the hospital
Impacts of climate and land use changes on the hydrological and erosion processes of two contrasting Mediterranean catchments
The impacts of climate and land use changes on streamflow and sediment export were evaluated for a humid (SĂŁo Lourenço) and a dry (Guadalupe) Mediterranean catchment, using the SWAT model. SWAT was able to produce viable streamflow and sediment export simulations for both catchments, which provided a baseline for investigating climate and land use changes under the A1B and B1 emission scenarios for 2071â2100. Compared to the baseline scenario (1971â2000), climate change scenarios showed a decrease in annual rainfall for both catchments (humid: â 12%; dry: â 8%), together with strong increases in rainfall during winter. Land use changes were derived from a socio-economic storyline in which traditional agriculture is replaced by more profitable land uses (i.e. corn and commercial forestry at the humid site; sunflower at the dry site). Climate change projections showed a decrease in streamflow for both catchments, whereas sediment export decreased only for the SĂŁo Lourenço catchment. Land use changes resulted in an increase in streamflow, but the erosive response differed between catchments. The combination of climate and land use change scenarios led to a reduction in streamflow for both catchments, suggesting a domain of the climatic response. As for sediments, contrasting results were observed for the humid (A1B: â 29%; B1: â 22%) and dry catchment (A1B: + 222%; B1: + 5%), which is mainly due to differences in the present-day and forecasted vegetation types. The results highlight the importance of climate-induced land-use change impacts, which could be similar to or more severe than the direct impacts of climate change alone
Agricultura orgĂąnica: caracterĂsticas bĂĄsicas do seu produtor.
A agricultura orgĂąnica Ă© ainda pouco expressiva no Brasil. Sua relevĂąncia Ă©, no entanto, crescente, seguindo tendĂȘncia observada em outros paĂses, em especial na Europa. Este estudo analisa as caracterĂsticas bĂĄsicas do produtor de produtos orgĂąnicos, contribuindo para preencher uma lacuna existente na literatura de economia rural. Utilizando informaçÔes primĂĄrias sobre agricultores orgĂąnicos da regiĂŁo prĂłxima Ă cidade de Curitiba, ParanĂĄ, identificamos as suas caracterĂsticas pessoais e econĂŽmicas, por meio de estatĂstica descritiva, anĂĄlise de correlação e regressĂŁo linear mĂșltipla. Os produtores foram divididos em dois grupos: o primeiro com aqueles que ainda estĂŁo em conversĂŁo para a agricultura orgĂąnica e o segundo grupo composto por produtores orgĂąnicos que jĂĄ obtiveram a certificação de seus produtos. Os resultados obtidos indicam que alta participação de capital prĂłprio no financiamento da produção e elevado nĂvel de escolaridade sĂŁo duas das caracterĂsticas mais marcantes dos produtores rurais orgĂąnicos paranaenses. Outras caracterĂsticas que influenciam o resultado lĂquido da atividade sĂŁo a disponibilidade de mĂŁo de obra e a integração de atividades agrĂcolas, pecuĂĄrias e florestais
The handbook for standardised field and laboratory measurements in terrestrial climate-change experiments and observational studies
Climate change is a worldwide threat to biodiversity and ecosystem structure, functioning, and services. To understand the underlying drivers and mechanisms, and to predict the consequences for nature and people, we urgently need better understanding of the direction and magnitude of climateâchange impacts across the soilâplantâatmosphere continuum. An increasing number of climateâchange studies is creating new opportunities for meaningful and highâquality generalisations and improved process understanding. However, significant challenges exist related to data availability and/or compatibility across studies, compromising opportunities for data reâuse, synthesis, and upscaling. Many of these challenges relate to a lack of an established âbest practiceâ for measuring key impacts and responses. This restrains our current understanding of complex processes and mechanisms in terrestrial ecosystems related to climate change
Diving into the vertical dimension of elasmobranch movement ecology
Knowledge of the three-dimensional movement patterns of elasmobranchs is vital to understand their ecological roles and exposure to anthropogenic pressures. To date, comparative studies among species at global scales have mostly focused on horizontal movements. Our study addresses the knowledge gap of vertical movements by compiling the first global synthesis of vertical habitat use by elasmobranchs from data obtained by deployment of 989 biotelemetry tags on 38 elasmobranch species. Elasmobranchs displayed high intra- and interspecific variability in vertical movement patterns. Substantial vertical overlap was observed for many epipelagic elasmobranchs, indicating an increased likelihood to display spatial overlap, biologically interact, and share similar risk to anthropogenic threats that vary on a vertical gradient. We highlight the critical next steps toward incorporating vertical movement into global management and monitoring strategies for elasmobranchs, emphasizing the need to address geographic and taxonomic biases in deployments and to concurrently consider both horizontal and vertical movements
Curvature-bias corrections using a pseudomass method
Momentum measurements for very high momentum charged particles, such as muons from electroweak vector boson decays, are particularly susceptible to charge-dependent curvature biases that arise from misalignments of tracking detectors. Low momentum charged particles used in alignment procedures have limited sensitivity to coherent displacements of such detectors, and therefore are unable to fully constrain these misalignments to the precision necessary for studies of electroweak physics. Additional approaches are therefore required to understand and correct for these effects. In this paper the curvature biases present at the LHCb detector are studied using the pseudomass method in proton-proton collision data recorded at centre of mass energy â(s)=13 TeV during 2016, 2017 and 2018. The biases are determined using ZâÎŒ + ÎŒ - decays in intervals defined by the data-taking period, magnet polarity and muon direction. Correcting for these biases, which are typically at the 10-4 GeV-1 level, improves the ZâÎŒ + ÎŒ - mass resolution by roughly 18% and eliminates several pathological trends in the kinematic-dependence of the mean dimuon invariant mass
Study of CP violation in B0 â DKâ(892)0 decays with D â KÏ(ÏÏ), ÏÏ(ÏÏ), and KK final states
A measurement of CP-violating observables associated with the interference
of B0 â D0Kâ
(892)0 and B0 â DÂŻ 0Kâ
(892)0 decay amplitudes is performed in the
D0 â KâÏ
±(Ï
+Ï
â), D0 â Ï
+Ï
â(Ï
+Ï
â), and D0 â K+Kâ fnal states using data collected
by the LHCb experiment corresponding to an integrated luminosity of 9 fbâ1
. CP-violating
observables related to the interference of B0
s â D0KÂŻ â
(892)0 and B0
s â DÂŻ 0KÂŻ â
(892)0 are also
measured, but no evidence for interference is found. The B0 observables are used to constrain
the parameter space of the CKM angle Îł and the hadronic parameters r
DKâ
B0 and ÎŽ
DKâ
B0 with
inputs from other measurements. In a combined analysis, these measurements allow for four
solutions in the parameter space, only one of which is consistent with the world average
Study of the doubly charmed tetraquark T+cc
Quantum chromodynamics, the theory of the strong force, describes interactions of coloured quarks and gluons and the formation of hadronic matter. Conventional hadronic matter consists of baryons and mesons made of three quarks and quark-antiquark pairs, respectively. Particles with an alternative quark content are known as exotic states. Here a study is reported of an exotic narrow state in the D0D0Ï+ mass spectrum just below the D*+D0 mass threshold produced in proton-proton collisions collected with the LHCb detector at the Large Hadron Collider. The state is consistent with the ground isoscalar T+cc tetraquark with a quark content of ccuâŻâŻâŻdâŻâŻâŻ and spin-parity quantum numbers JPâ=â1+. Study of the DD mass spectra disfavours interpretation of the resonance as the isovector state. The decay structure via intermediate off-shell D*+ mesons is consistent with the observed D0Ï+ mass distribution. To analyse the mass of the resonance and its coupling to the D*D system, a dedicated model is developed under the assumption of an isoscalar axial-vector T+cc state decaying to the D*D channel. Using this model, resonance parameters including the pole position, scattering length, effective range and compositeness are determined to reveal important information about the nature of the T+cc state. In addition, an unexpected dependence of the production rate on track multiplicity is observed
Measurement of the CKM angle in and decays with
A measurement of -violating observables is performed using the decays
and , where the meson is
reconstructed in one of the self-conjugate three-body final states and (commonly denoted ). The decays are analysed in bins of the -decay phase space, leading
to a measurement that is independent of the modelling of the -decay
amplitude. The observables are interpreted in terms of the CKM angle .
Using a data sample corresponding to an integrated luminosity of
collected in proton-proton collisions at centre-of-mass
energies of , , and with the LHCb experiment,
is measured to be . The hadronic
parameters , , , and ,
which are the ratios and strong-phase differences of the suppressed and
favoured decays, are also reported
- âŠ