11,398 research outputs found
Toward a Grand Vision: Early Implementation of California's Local Control Funding Formula
California has taken the first steps down an historic path that fundamentally alters how its public schools are financed, education decisions are made, and traditionally underserved students' needs are met. The Local Control Funding Formula (LCFF), passed with bipartisan legislative support and signed into law by Governor Jerry Brown on July 1, 2013, represents the most comprehensive transformation of California's school funding system in 40 years. The LCFF significantly loosens the reins of state control over education. It all but eliminates categorical funding streams, subsituting a base of funding for all distraicts and adding dollars for low-income students, English language learners, and foster youth. The new system empowers school districts to determine how to allocate their dollars to best meet the needs of their students. Finally, by requiring all districts to engage parents and other education stakeholders in decisions about how to spend newly flexible funds, the LCFF represents a remarkable experiment in local democracy
General practitioners' perceptions of effective health care
Objectives: To explore general practitioners' perceptions of effective health care and its application in their own practice; to examine how these perceptions relate to assumptions about clinicians' values and behaviour implicit in the evidence based medicine approach. Design: A qualitative study using semistructured interviews. Setting: Eight general practices in North Thames region that were part of the Medical Research Council General Practice Research Framework. Participants: 24 general practitioners, three from each practice. Main outcome measures: Respondents' definitions of effective health care, reasons for not practising effectively according to their own criteria, sources of information used to answer clinical questions about patients, reasons for making changes in clinical practice. Results: Three categories of definitions emerged: clinical, patient related, and resource related. Patient factors were the main reason given for not practising effectively; others were lack of time, doctors' lack of knowledge and skills, lack of resources, and "human failings." Main sources of information used in situations of clinical uncertainty were general practitioner partners and hospital doctors. Contact with hospital doctors and observation of hospital practice were just as likely as information from medical and scientific literature to bring about changes in clinical practice. Conclusions: The findings suggest that the central assumptions of the evidence based medicine paradigm may not be shared by many general practitioners, making its application in general practice problematic. The promotion of effective care in general practice requires a broader vision and a more pragmatic approach which takes account of practitioners' concerns and is compatible with the complex nature of their work
Modulated voltage metastable ionization detector
The output current from a metastable ionization detector (MID) is applied to a modulation voltage circuit. An adjustment is made to balance out the background current, and an output current, above background, is applied to an input of a strip chart recorder. For low level concentrations, i.e., low detected output current, the ionization potential will be at a maximum and the metastable ionization detector will operate at its most sensitive level. When the detected current from the metastable ionization detector increases above a predetermined threshold level, a voltage control circuit is activated which turns on a high voltage transistor which acts to reduce the ionization potential. The ionization potential applied to the metastable ionization detector is then varied so as to maintain the detected signal level constant. The variation in ionization potential is now related to the concentration of the constituent and a representative amplitude is applied to another input of said strip chart recorder
Alien Registration- Humphrey, Wilma C. (Houlton, Aroostook County)
https://digitalmaine.com/alien_docs/24715/thumbnail.jp
Non-equilibrium mechanics and dynamics of motor activated gels
The mechanics of cells is strongly affected by molecular motors that generate
forces in the cellular cytoskeleton. We develop a model for cytoskeletal
networks driven out of equilibrium by molecular motors exerting transient
contractile stresses. Using this model we show how motor activity can
dramatically increase the network's bulk elastic moduli. We also show how motor
binding kinetics naturally leads to enhanced low-frequency stress fluctuations
that result in non-equilibrium diffusive motion within an elastic network, as
seen in recent \emph{in vitro} and \emph{in vivo} experiments.Comment: 21 pages, 8 figure
Validation of the Chemistry Module for the Euler Solver in Unified Flow Solver
In the world of computational fluid dynamics (CFD), three main types of flow regimes exist: continuum, rarified, and free molecular. Of these regimes, the rarified regime is the most difficult to model because the continuum equations don\u27t apply and using the Boltzmann equation is too computationally expensive to use. The Unified Flow Solver (UFS) is currently being developed to solve this problem by using the kinetic continuum Euler equations where valid, and only using the Boltzmann equation where necessary, thus reducing the computational cost. The use of the kinetic Euler equations helps to aid in the coupling of the Euler equations with the Boltzmann equation. This work compares UFS with a common nonequilibrium solver, LeMANS, to attempt to validate the thermo-chemical Euler solver available in UFS. Three types of simulations were run to validate the Euler solver: perfect gas, thermal nonequilibrium, and thermo-chemical nonequilibrium. The perfect gas simulation was run using both a monatomic and two species diatomic gas. The thermal nonequilibrium simulation was run using a 2 species gas, while the thermo-chemical nonequilibrium simulation was run using a 2 and 11 species gas. The results of the simulations show that UFS matches closely for both the monatomic and 2 species perfect gas simulations as well as the thermal nonequilibrium simulation. The thermo-chemical nonequilibrium simulations do not show the correct vibrational temperature, which causes the species concentrations to be incorrect. All of the simulations show that UFS is much slower than LeMANS in number of cpu hours. This means that UFS not a practical choice for a CFD solver and cannot be fully validated in its current state
Studies of the vertebrate telencephalon. III. The amygdaloid complex in the shrew (Blarina brevicauda)
No Abstract.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/49940/1/900810305_ftp.pd
A new comparison between solid-state thermionics and thermoelectrics
It is shown that equations for electrical current in solid-state thermionic
and thermoelectric devices converge for devices with a width equal to the mean
free path of electrons, yielding a common expression for intensive electronic
efficiency in the two types of devices. This result is used to demonstrate that
the materials parameters for thermionic and thermoelectric devices are equal,
rather than differing by a multiplicative factor as previously thought
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