626 research outputs found
Planejamento Estratégico Como Prática Managerialista em Organizações Hospitalares
Hospitais são caracterizados como Sistemas Adaptativos Complexos (SAC) por apresentarem significativa presença de características como: não linearidade, imprevisibilidade, dinamicidade das interações e agentes autônomos, os quais fazem com que o sistema aprenda e evolua continuamente, desafiando seus gestores. Visando maior profissionalização da gestão, essas organizações têm adotado
metodologias de gestão tais como o Planejamento Estratégico (PE) voltadas, principalmente, ao desempenho financeiro, nem sempre observando as peculiaridades organizacionais, caracterizando-se como uma prática reconhecida como managerialism. Diante desse contexto, este estudo questiona: Quais as implicações do Planejamento Estratégico no desempenho organizacional de hospitais, como Sistemas Adaptativos Complexos? Para tanto, investigou-se as características e a influência de elementos tais como interações, não linearidade e
aprendizado, no Planejamento Estratégico de duas organizações hospitalares da Região Sudeste. Esse estudo tem base em conceitos de Estratégia em Organizações e da Teoria da Complexidade. Trata-se de um estudo comparativo de casos, com corte transversal e de natureza qualitativa. Os dados foram coletados por meio de entrevistas em profundidade, observação não participante e documentos, os quais foram analisados por meio de técnicas de análise de narrativa
e análise documental. Resultados evidenciaram que o PE adotado nos Hospitais segue a orientação tradicional, ou seja, apresenta características managerialistas que tem no desempenho financeiro o seu foco principal. A não observação das especificidades organizacionais limitou a efetividade do PE nos hospitais investigados. As características de SAC permitiram compreender as razões das dificuldades encontradas: 1) a não linearidade é potencializada pela autonomia dos agentes e grupos de agentes por tratar-se de organização profissional; 2) as
decisões são fortemente influenciadas pela imprevisibilidade do hospital e, por isso, a dinamicidade das interações informais se torna mais efetiva do que o planejamento deliberado; 3) a capacidade de aprendizado dos agentes demonstrou ser essencial
para lidarem com o imprevisto, contribuindo para a gestão estratégica das organizações, não necessariamente por meio do Planejamento Estratégico. A partir desses resultados, conclui-se que, embora algumas estratégias planejadas tenham sido implementadas, prevalece na gestão estratégica de hospitais as estratégias emergentes, muito influenciadas pela multiplicidade e pluralidade de agentes, pelos interesses divergentes entre grupos (especialmente administrativo e profissional), e
pela constante necessidade de adaptação dos agentes para promover mudanças. Por tratar-se de um hospital, o desempenho assume uma vertente social que, juntamente com a financeira, além de não equilibrado se torna motivo de conflito para o público interno, especialmente, junto aos profissionais especialistas. Por fim,
o Planejamento Estratégico demonstrou cumprir um papel simbólico, legitimando a gestão dos hospitais perante o mercado
Quality Educational Planning and Senior Secondary Education Goal Attainment in Ilorin Metropolis, Kwara State
This study determined the relationship between quality educational planning and senior secondary education goal attainment in Ilorin metropolis, Kwara State. The study adopted a descriptive design of correlation type while its population comprised all the 3594 teachers across the public secondary schools in Ilorin metropolis. Simple random sampling technique was used to select 346 teachers in the metropolis. An adapted questionnaire titled “Quality Educational Planning Questionnaire” (QEPQ) and “Secondary Education Goal Attainment Proforma” (SEGAP) were used to collect data. Descriptive statistics of frequency count and percentage was used to answer the research questions while inferential statistics of Pearson product-moment correlation statistics was used to test the hypotheses at 0.05 level of significant. The findings of the study revealed that quality educational planning has a significant relationship with secondary education goal attainment in Ilorin metropolis, Kwara State. It was recommended that adequate classrooms and instructional facilities should continue to be adequately planned in order to keep the tempo of academic performance and enhance the level of senior secondary education goal attainment in Kwara State
Analysis of Plasma-Tail Motions for Comets C/2001 Q4 (NEAT) and C/2002 T7 (LINEAR) Using Observations from SMEI
SMEI 3D Reconstruction of a Coronal Mass Ejection Interacting with a Corotating Solar Wind Density Enhancement: The 2008 April 26 CME
Kinetic models for optimal control of wealth inequalities
We introduce and discuss optimal control strategies for kinetic models for wealth distribution in a simple market economy, acting to minimize the variance of the wealth density among the population. Our analysis is based on a finite time horizon approximation, or model predictive control, of the corresponding control problem for the microscopic agents' dynamic and results in an alternative theoretical approach to the taxation and redistribution policy at a global level. It is shown that in general the control is able to modify the Pareto index of the stationary solution of the corresponding Boltzmann kinetic equation, and that this modification can be exactly quantified. Connections between previous Fokker-Planck based models and taxation-redistribution policies and the present approach are also discussed
Electronic structure and magnetic properties of RMnX (R= Mg, Ca, Sr, Ba, Y; X= Si, Ge) studied by KKR method
Electronic structure calculations, using the charge and spin self-consistent
Korringa- Kohn-Rostoker (KKR) method, have been performed for several Mn
compounds ( = Mg, Ca, Sr, Ba, Y; = Si, Ge) of the CeFeSi-type structure.
The origin of their magnetic properties has been investigated emphasizing the
role of the Mn sublattice. The significant influence of the Mn-Mn and Mn-
interatomic distances on the Mn magnetic moment value is delineated from our
computations, supporting many neutron diffraction data. We show that the marked
change of with the Mn-Mn and Mn- distances resulted from a
redistribution between spin-up and spin-down -Mn DOS rather than from
different fillings of the Mn 3-shell. Bearing in mind that the neutron
diffraction data reported for the Mn compounds are rather scattered, the
KKR computations of are in fair agreement with the experimental
values. Comparing density of states near obtained in different magnetic
orderings, one can notice that the entitled Mn systems seem to 'adapt'
their magnetic structures to minimize the DOS in the vicinity of the Fermi
level. Noteworthy, the SrMnGe antiferromagnet exhibits a pseudo-gap behaviour
at , suggesting anomalous electron transport properties. In addition,
the F-AF transition occurring in the disordered LaYMnSi alloy for
the range is well supported by the DOS features of
LaYMnSi. In contrast to the investigated Mn compounds,
YFeSi was found to be non-magnetic, which is in excellent agreement with the
experimental data.Comment: 10 pages + 14 figures, to appear in Eur. Phys. Jour.
The occupancy-abundance relationship and sampling designs using occupancy to monitor populations of Asian bears
Designing a population monitoring program for Asian bears presents challenges associated with their low densities and detectability, generally large home ranges, and logistical or resource constraints. The use of an occupancy-based method to monitor bear populations can be appropriate under certain conditions given the mechanistic relationship between occupancy and abundance. The form of the occupancy\u2013abundance relationship is dependent on species-specific characteristics such as home range size and population density, as well as study area size. To assess the statistical power of tests to detect population change of Asian bears, we conducted a study using a range of scenarios by simulating spatially explicit individual-based capture-recapture data from a demographically open model. Simulations assessed the power to detect changes in population density via changes in site-level occupancy or abundance through time, estimated using a standard occupancy model or a Royle-Nichols model, both with point detectors (representing camera traps). We used IUCN Red List criteria as a guide in selection of two population decline scenarios (20% and 50%), but we chose a shorter time horizon (10 years = 1 bear generation), meaning that declines were steeper than used for IUCN criteria (3 generations). Our simulations detected population declines of 50% with high power (>0.80) and low false positive rates (FPR: incorrectly detecting a decline) (<0.10) when detectors were spaced at > 0.67 times the home range diameter (home-range spacing ratio: HRSR, a measure of spatial correlation), such that bears would tend to overlap no more than two detectors. There was high (0.85) correlation between realized occupancy and N in these scenarios. The FPR increased as the HRSR decreased because of spatial correlation in the occupancy process induced when individual home ranges overlap multiple detectors. The mean statistical power to detect more gradual population declines (20% in 10 years) with HRSR > 0.67 was low for occupancy models 0.22 (maximum power 0.67) and Royle-Nichols models (0.24; maximum power 0.67), suggesting that declines of this magnitude may not be described reliably with 10 years of monitoring. Our results demonstrated that under many realistic scenarios that we explored, false positive rates were unacceptably high. We highlight that when designing occupancy studies, the spacing between point detectors be at least 0.67 times the diameter of the home range size of the larger sex (e.g., males) when the assumptions of the spatial capture-recapture model used for simulation are met
The Scintillating Tail of Comet C/2020 F3 (Neowise)
Context. The occultation of a radio source by the plasma tail of a comet can
be used to probe structure and dynamics in the tail. Such occultations are
rare, and the occurrence of scintillation, due to small-scale density
variations in the tail, remains somewhat controversial. Aims. A detailed
observation taken with the Low-Frequency Array (LOFAR) of a serendipitous
occultation of the compact radio source 3C196 by the plasma tail of comet
C/2020 F3 (Neowise) is presented. 3C196 tracked almost perpendicularly behind
the tail, providing a unique profile cut only a short distance downstream from
the cometary nucleus itself. Methods. Interplanetary scintillation (IPS) is
observed as the rapid variation of the intensity received of a compact radio
source due to density variations in the solar wind. IPS in the signal received
from 3C196 was observed for five hours, covering the full transit behind the
plasma tail of comet C/2020 F3 (Neowise) on 16 July 2020, and allowing an
assessment of the solar wind in which the comet and its tail are embedded.
Results. The results reveal a sudden and strong enhancement in scintillation
which is unequivocally attributable to the plasma tail. The strongest
scintillation is associated with the tail boundaries, weaker scintillation is
seen within the tail, and previously-unreported periodic variations in
scintillation are noted, possibly associated with individual filaments of
plasma. Furthermore, contributions from the solar wind and comet tail are
separated to measure a sharp decrease in the velocity of material within the
tail, suggesting a steep velocity shear resulting in strong turbulence along
the tail boundaryComment: Accepted for publication in Astronomy and Astrophysics, 8 pages, 9
figure
3-D reconstructions of the early-November 2004 CDAW geomagnetic storms: analysis of Ooty IPS speed and density data
3-D reconstructions of the early-November 2004 CDAW geomagnetic storms: analysis of Ooty IPS speed and density data
Interplanetary scintillation (IPS) remote-sensing observations provide a view of the solar wind covering a wide range of heliographic latitudes and heliocentric distances from the Sun between ~0.1 AU and 3.0 AU. Such observations are used to study the development of solar coronal transients and the solar wind while propagating out through interplanetary space. They can also be used to measure the inner-heliospheric response to the passage of coronal mass ejections (CMEs) and co-rotating heliospheric structures. IPS observations can, in general, provide a speed estimate of the heliospheric material crossing the observing line of site; some radio antennas/arrays can also provide a radio scintillation level. We use a three-dimensional (3-D) reconstruction technique which obtains perspective views from outward-flowing solar wind and co-rotating structure as observed from Earth by iteratively fitting a kinematic solar wind model to these data. Using this 3-D modelling technique, we are able to reconstruct the velocity and density of CMEs as they travel through interplanetary space. For the time-dependent model used here with IPS data taken from the Ootacamund (Ooty) Radio Telescope (ORT) in India, the digital resolution of the tomography is 10&deg; by 10&deg; in both latitude and longitude with a half-day time cadence. Typically however, the resolutions range from 10&deg; to 20&deg; in latitude and longitude, with a half- to one-day time cadence for IPS data dependant upon how much data are used as input to the tomography. We compare reconstructed structures during early-November 2004 with in-situ measurements from the Wind spacecraft orbiting the Sun-Earth L<sub>1</sub>-Point to validate the 3-D tomographic reconstruction results and comment on how these improve upon prior reconstructions
- …