1,566 research outputs found
STS-3 Induced Environment Contamination Monitor (IECM): Quick-look report
The STS-3/Induced Environment Contamination Monitor (IECM) mission is described. The IECM system performance is discussed, and IECM mission time events are briefly described. Quick look analyses are presented for each of the 10 instruments comprising the IECM on the flight of STS-3. Finally, a short summary is presented and plans are discussed for future IECM flights, and opportunities for direct mapping of Orbiter effluents using the Remote manipulator System
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Digital Government and Public Health
Digital government is typically defined as the production and delivery of information and services inside government and between government and the public using a range of information and communication technologies. Two types of government relationships with other entities are government-to-citizen and government-to-government relationships. Both offer opportunities and challenges. Assessment of a public health agency's readiness for digital government includes examination of technical, managerial, and political capabilities. Public health agencies are especially challenged by a lack of funding for technical infrastructure and expertise, by privacy and security issues, and by lack of Internet access for low-income and marginalized populations. Public health agencies understand the difficulties of working across agencies and levels of government, but the development of new, integrated e-programs will require more than technical change — it will require a profound change in paradigm
Rapid fitting of particle cascade development data from X-ray film densitometry measurements
A semiautomatic method of fitting transition curves to X-ray film optical density measurements of electromagnetic particle cascades is described. Several hundred singly and multiple interacting cosmic ray events from the JACEE 8 balloon flights were analyzed using this procedure. In addition to greatly increased speed compared to the previous manual method, the semiautomatic method offers increased accuracy through maximum likelihood fitting
Estimating Subjective Probabilities
Subjective probabilities play a role in many economic decisions. There is a large theoretical literature on the elicitation of subjective probabilities, and an equally large empirical literature. However, there is a gulf between the two. The theoretical literature proposes a range of procedures that can be used to recover subjective probabilities, but stresses the need to make strong auxiliary assumptions or "calibrating adjustments" to elicited reports in order to recover the latent probability. With some notable exceptions, the empirical literature seems intent on either making those strong assumptions or ignoring the need for calibration. We illustrate how the joint estimation of risk attitudes and subjective probabilities using structural maximum likelihood methods can provide the calibration adjustments that theory calls for. This allows the observer to make inferences about the latent subjective probability, calibrating for virtually any well-specified model of choice under uncertainty. We demonstrate our procedures with experiments in which we elicit subjective probabilities. We calibrate the estimates of subjective beliefs assuming that choices are made consistently with expected utility theory or rank-dependent utility theory. Inferred subjective probabilities are significantly different when calibrated according to either theory, thus showing the importance of undertaking such exercises. Our findings also have implications for the interpretation of probabilities inferred from prediction markets.
Inferring Beliefs as Subjectively Uncertain Probabilities
We propose a method for estimating subjective beliefs, viewed as a subjective probability distribution. The key insight is to characterize beliefs as a parameter to be estimated from observed choices in a well-defined experimental task, and to estimate that parameter as a random coefficient. The experimental task consists of a series of standard lottery choices in which the subject is assumed to use conventional risk attitudes to select one lottery or the other, and then a series of betting choices in which the subject is presented with a range of bookies offering odds on the outcome of some event that the subject has a belief over. Knowledge of the risk attitudes of subjects conditions the inferences about subjective beliefs. Maximum simulated likelihood methods are used to estimate a structural model in which subjects employ subjective beliefs to make bets. We present evidence that some subjective probabilities are indeed best characterized as probability distributions with non-zero variance.
ANTI-NMDA ENCEPHALITIS IN THE ACUTE SETTING
Background: Encephalitis associated with antibodies targeted against the N-methyl-D-aspartate (NMDA) receptor is
increasingly recognised as a major cause of an acute presentation of organic psychosis. Misdiagnosis and subsequent inappropriate
referral to psychiatric services is common and avoidable. This review focuses on addressing this issue in the acute setting.
Methods: The authors present a review of existing literature relating to the pathophysiology and presentation of anti-NMDA
receptor encephalitis, prior to proposing a management pathway avoiding delays to treatment incurred through misdiagnosis or
inappropriate referral.
Conclusions: Acute care physicians should have a low threshold for suspecting anti-NMDA receptor encephalitis in any patient
presenting with acute psychosis in the context of non-specific coryzal and constitutional symptoms in whom infective causes have
been excluded. The presence of pleocytosis and reduced protein in routine CSF analysis should further raise suspicion, and samples
should be sent for immunohistochemical testing. Availability and efficiency of this testing is currently suboptimal
ANTI-NMDA ENCEPHALITIS IN THE ACUTE SETTING
Background: Encephalitis associated with antibodies targeted against the N-methyl-D-aspartate (NMDA) receptor is
increasingly recognised as a major cause of an acute presentation of organic psychosis. Misdiagnosis and subsequent inappropriate
referral to psychiatric services is common and avoidable. This review focuses on addressing this issue in the acute setting.
Methods: The authors present a review of existing literature relating to the pathophysiology and presentation of anti-NMDA
receptor encephalitis, prior to proposing a management pathway avoiding delays to treatment incurred through misdiagnosis or
inappropriate referral.
Conclusions: Acute care physicians should have a low threshold for suspecting anti-NMDA receptor encephalitis in any patient
presenting with acute psychosis in the context of non-specific coryzal and constitutional symptoms in whom infective causes have
been excluded. The presence of pleocytosis and reduced protein in routine CSF analysis should further raise suspicion, and samples
should be sent for immunohistochemical testing. Availability and efficiency of this testing is currently suboptimal
Christianity, Calamity, and Culture: The Involvement of Christian Churches in the 1998 Aitape Tsunami Disaster Relief
This paper considers the links between religion and disaster relief through a
detailed case study of the activities of Christian churches following the Aitape tsunami
of 1998 in northwest Papua New Guinea. Based on primary fieldwork data,
we argue that Christian religion was central to the way in which the Combined
Churches Organization conducted its relief work and to why it sought to undertake
it in the first place. A comparison of the perspectives of this organization and
of other religious and governmental organizations as to the causes of this disaster
and what remedies they should undertake suggests that greater attention should
be paid—both by aid and development researchers and practitioners—to aspects
of religious belief and the way they inform theory and practice. Much remains to
explore concerning the ways religion informs the theory and practice of aid and
development, particularly in the Pacific. Through the detailed case study offered
here, this paper adds to the fledgling debate engaging with the links between religion
and development and calls for the initiation of an agenda toward that end
Distributed Modeling of Ablation (1996–2011) and Climate Sensitivity on the Glaciers of Taylor Valley, Antarctica
The McMurdo Dry Valleys of Antarctica host the coldest and driest ecosystem on Earth, which is acutely sensitive to the availability of water coming from glacial runoff. We modeled the spatial variability in ablation and assessed climate sensitivity of the glacier ablation zones using 16 years of meteorological and surface mass-balance observations collected in Taylor Valley. Sublimation was the primary form of mass loss over much of the ablation zones, except for near the termini where melt, primarily below the surface, dominated. Microclimates in ~10 m scale topographic basins generated melt rates up to ten times higher than over smooth glacier surfaces. In contrast, the vertical terminal cliffs on the glaciers can have higher or lower melt rates than the horizontal surfaces due to differences in incoming solar radiation. The model systematically underpredicted ablation for the final 5 years studied, possibly due to an increase of windblown sediment. Surface mass-balance sensitivity to temperature was ~−0.02 m w.e. K−1, which is among the smallest magnitudes observed globally. We also identified a high sensitivity to ice albedo, with a decrease of 0.02 having similar effects as a 1 K increase in temperature, and a complex sensitivity to wind speed
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