148 research outputs found
L\u27Egal Franglais
The following list of words that look the same in French and English is a modified form of one made for the members of the Ouvroir de Literature Potentielle (OuLiPo), a group of eighteen writers and mathematicians based in Paris whose raison d\u27etre is the literary use of constructive form. Specifically, it was generated to provide material for the composition of heteronymic, ambivalent Anglo-French texts. The list, which is not meant to be exhaustive, has been drawn up according to three principles
Oulipo
The name OuLiPo has already appeared in Word Ways in connection with L\u27Egal Franglais, a bilingual vocabulary written for the group which bear that name
Microscopic determination of boundary shear and sublayer turbulence characteristics in an open channel
The application of a method of velocity determination in an open channel using a microscope and camera to record the motion of small particles suspended in water is described. Velocity measurements were made in a series of thin planes orientated parallel to the channel bottom for the case of two-dimensional laminar and turbulent open channel flow. Velocity profiles near the boundary were plotted and boundary shear computed from the rate of shear thus determined. Turbulence intensity was computed and the distribution of particle velocities examined. It was concluded that the method yields boundary shear values + to within - 15 percent and that this uncertainty can be reduced significantly. The maximum error is caused by uncertainty in the location of: the focal plane and in the location of a particle within the focal plane. This difficulty causes an even greater error in computation of turbulence intensity. This error increases as the distance from the boundary decreases, creating a serious disadvantage of the method. Particle velocity distributions exhibit a positive third moment which is in qualitative agreement with previous measurements. The results indicate that further investigation of the application of the method to open channel turbulent flow is justified. It is planned to modify the method so that particle motion can be viewed in a plane orientated normal to the boundary. This will considerably reduce the primary errors described in this report and permit more accurate turbulence measurements very near the boundary.U.S. Department of the InteriorU.S. Geological SurveyOpe
Adaptive model-based control systems and methods for controlling a gas turbine
Adaptive model-based control systems and methods are described so that performance and/or operability of a gas turbine in an aircraft engine, power plant, marine propulsion, or industrial application can be optimized under normal, deteriorated, faulted, failed and/or damaged operation. First, a model of each relevant system or component is created, and the model is adapted to the engine. Then, if/when deterioration, a fault, a failure or some kind of damage to an engine component or system is detected, that information is input to the model-based control as changes to the model, constraints, objective function, or other control parameters. With all the information about the engine condition, and state and directives on the control goals in terms of an objective function and constraints, the control then solves an optimization so the optimal control action can be determined and taken. This model and control may be updated in real-time to account for engine-to-engine variation, deterioration, damage, faults and/or failures using optimal corrective control action command(s)
Risk factors for severe acute lower respiratory infections in children – a systematic review and meta-analysis
Aim To identify the risk factors in children under five years
of age for severe acute lower respiratory infections (ALRI),
which are the leading cause of child mortality.
Methods We performed a systematic review of published
literature available in the public domain. We conducted
a quality assessment of all eligible studies according to
GRADE criteria and performed a meta-analysis to report the
odds ratios for all risk factors identified in these studies.
Results We identified 36 studies that investigated 19 risk
factors for severe ALRI. Of these, 7 risk factors were significantly
associated with severe ALRI in a consistent manner
across studies, with the following meta-analysis estimates
of odds ratios (with 95% confidence intervals): low birth
weight 3.18 (1.02-9.90), lack of exclusive breastfeeding 2.34
(1.42-3.88), crowding – more than 7 persons per household
1.96 (1.53-2.52), exposure to indoor air pollution 1.57
(1.06-2.31), incomplete immunization 1.83 (1.32-2.52), undernutrition
– weight-for-age less than 2 standard deviations
4.47 (2.10-9.49), and HIV infection 4.15 (2.57-9.74).
Conclusion This study highlights the role of the above
seven risk factors in the development of severe pneumonia
in under-five children. In addition, it emphasizes the
need for further studies investigating other potential risk
factors. Since these risk factors are potentially preventable,
health policies targeted at reducing their prevalence provide
a basis for decreasing the burden of childhood pneumonia
Higher Education Exchange:2005
This annual publication serves as a forum for new ideas and dialogue between scholars and the larger public. Essays explore ways that students, administrators, and faculty can initiate and sustain an ongoing conversation about the public life they share.The Higher Education Exchange is founded on a thought articulated by Thomas Jefferson in 1820: "I know no safe depository of the ultimate powers of the society but the people themselves; and if we think them not enlightened enough to exercise their control with a wholesome discretion, the remedy is not to take it from them, but to inform their discretion by education."In the tradition of Jefferson, the Higher Education Exchange agrees that a central goal of higher education is to help make democracy possible by preparing citizens for public life. The Higher Education Exchange is part of a movement to strengthen higher education's democratic mission and foster a more democratic culture throughout American society.Working in this tradition, the Higher Education Exchange publishes interviews, case studies, analyses, news, and ideas about efforts within higher education to develop more democratic societies
Higher Education Exchange: 2012
This annual publication serves as a forum for new ideas and dialogue between scholars and the larger public. Essays explore ways that students, administrators, and faculty can initiate and sustain an ongoing conversation about the public life they share.The Higher Education Exchange is founded on a thought articulated by Thomas Jefferson in 1820: "I know no safe depository of the ultimate powers of the society but the people themselves; and if we think them not enlightened enough to exercise their control with a wholesome discretion, the remedy is not to take it from them, but to inform their discretion by education."In the tradition of Jefferson, the Higher Education Exchange agrees that a central goal of higher education is to help make democracy possible by preparing citizens for public life. The Higher Education Exchange is part of a movement to strengthen higher education's democratic mission and foster a more democratic culture throughout American society.Working in this tradition, the Higher Education Exchange publishes interviews, case studies, analyses, news, and ideas about efforts within higher education to develop more democratic societies
Risk factors for severe acute lower respiratory infections in children:a systematic review and meta-analysis
AIM: To identify the risk factors in children under five years of age for severe acute lower respiratory infections (ALRI), which are the leading cause of child mortality. METHODS: We performed a systematic review of published literature available in the public domain. We conducted a quality assessment of all eligible studies according to GRADE criteria and performed a meta-analysis to report the odds ratios for all risk factors identified in these studies. RESULTS: We identified 36 studies that investigated 19 risk factors for severe ALRI. Of these, 7 risk factors were significantly associated with severe ALRI in a consistent manner across studies, with the following meta-analysis estimates of odds ratios (with 95% confidence intervals): low birth weight 3.18 (1.02-9.90), lack of exclusive breastfeeding 2.34 (1.42-3.88), crowding – more than 7 persons per household 1.96 (1.53-2.52), exposure to indoor air pollution 1.57 (1.06-2.31), incomplete immunization 1.83 (1.32-2.52), undernutrition – weight-for-age less than 2 standard deviations 4.47 (2.10-9.49), and HIV infection 4.15 (2.57-9.74). CONCLUSION: This study highlights the role of the above seven risk factors in the development of severe pneumonia in under-five children. In addition, it emphasizes the need for further studies investigating other potential risk factors. Since these risk factors are potentially preventable, health policies targeted at reducing their prevalence provide a basis for decreasing the burden of childhood pneumonia
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On the limits to Ti incorporation into Si using pulsed laser melting
Fabrication of p-Si(111) layers with Ti levels well above the solid solubility limit was achieved via ion implantation of 15 keV 48Ti+ at doses of 1012 to 1016 cm−2 followed by pulsed laser melting using a Nd:YAG laser (FWHM = 6 ns) operating at 355 nm. All implanted layers were examined using cross-sectional transmission electron microscopy, and only the 1016 cm−2 Ti implant dose showed evidence of Ti clustering in a microstructure with a pattern of Ti-rich zones. The liquid phase diffusivity and diffusive velocity of Ti in Si were estimated to be 9 × 10−4 cm2/s and (2 ± 0.5) × 104 m/s, respectively. Using these results the morphological stability limit for planar resolidification of Si:Ti was evaluated, and the results indicate that attaining sufficient concentrations of Ti in Si to reach the nominal Mott transition in morphologically stable plane-front solidification should occur only for velocities so high as to exceed the speed limits for crystalline regrowth in Si(111).Engineering and Applied Science
Healthcare organization policy recommendations for the governance of surgical innovation:review of NHS policies
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