196,223 research outputs found
Struttura e organizzazione del trasporto di merci pericolose ai fini della prevenzione del rischio
No full textProlonged mechanical ventilation after critical illness
No full textA significant number of patients that have been critically ill require mechanical ventilation for extended periods of time as they progress towards recovery. Many of these patients can be cared for outside of the Intensive Care Unit in facilities focused on stabilizing the underlying medical problems, managing ventilatory support, and planning for rehabilitation and home care. Although these units have varied administrative structures, they have reported similar encouraging rates of weaning and survival. In a recent study about such a ward at a large academic hospital, it was observed that, although the majority of patients were liberated from the ventilator and returned home with a satisfactory activity level, a significant number of patients did not; these patients eventually died after a protracted hospital stay, mostly after a consensual withdrawal of life support. In the present article, a relevant literature review is presented concerning the outcome of patients undergoing prolonged mechanical ventilation. The main focus of the research was to address how to alleviate the burden of prolonged critical illness on mechanically ventilated patients who may eventually die after a great deal of suffering, and to identify the tangible emotional and financial costs to these patients, their families, and society
Vaccine
No full textInfluenza vaccination remains the most effective tool for reducing seasonal influenza disease burden. Few Low and Middle-Income Countries (LMICs) have robust, sustainable annual influenza national vaccination programs. The Partnership for Influenza Vaccine Introduction (PIVI) was developed as a public-private partnership to support LMICs to develop and sustain national vaccination programs through time-limited vaccine donations and technical support. We review the first 5\u202fyears of experience with PIVI, including the concept, country progress toward sustainability, and lesson learned. Between 2013 and 2018, PIVI worked with Ministries of Health in 17 countries. Eight countries have received donated vaccines and technical support; of these, two have transitioned to sustained national support of influenza vaccination and six are increasing national support of the vaccine programs towards full transition to local vaccine program support by 2023. Nine additional countries have received technical support for building the evidence base for national policy development and/or program evaluation. PIVI has resulted in increased use of vaccines in partner countries, and early countries have demonstrated progress towards sustainability, suggesting that a model of vaccine and technical support can work in LMICs. PIVI expects to add new country partners as current countries transition to self-reliance.2019-08-14T00:00:00Z31288998PMC6685526805
Dr. Duane M. Jackson, Morehouse College, July 2011
No full textThis video is a conversation with Dr. Duane M. Jackson. Dr. Jackson talks about his paper, "Recall and the Serial Position Effect: The Role of Primacy and Recency on Accounting Students' Performance." Jackie Daniel, AUC Woodruff Library, is the interviewer
"Reflections on the subject of Emigration from Europe with a view to Settlement in the United States" By M. Carey.
No full text"Reflections on the subject of Emigration from Europe with a view to Settlement in the United States: containing bried sketches of the moral and political character of those states.
By M. Carey, member of the American philosophical, and of the American Antiquarian Society, and author of The Olive Branch, Cindiciae Hibernicae, essays on banking, on political economy, and on internal improvement.
To which are now added the English editor's comments on the subject; together with Important Advice to Emigrants, and Cautions Against Impositions Practiced in the Outports
A Potential Method for Precision Position Self-Sensing in Voice-Coil Actuators
No full textAn approach for self-sensing is proposed for voice-coil actuators that have an invertible, position-dependent inductance. Actuators with these properties are denoted as position-invertible, variable-inductance (PIVI) actuators. The self-sensing methodology is based on tracking the inductance of a PIVI actuator from the oscillation frequency of a modified Pierce oscillator. By extension, the oscillation frequency provides a measurement of the actuator position without an external position sensor.
An electrical model for PIVI voice-coil actuators is first derived to aid in analysis. Oscillator theory is then introduced and applied to the analysis of a typical Pierce oscillator. The modified Pierce oscillator is then introduced and analyzed under the assumption of low-frequency actuator motion and driving current relative to the oscillation frequency. The effects of parasitic capacitance from the actuator current source are then discussed along with a mitigation method. A test circuit, including the modified Pierce oscillator and a transconductance amplifier, is then presented. Due to time constraints, the modified Pierce oscillator was constructed with a variable inductor rather than an actual PIVI actuator. This was considered acceptable since the variable inductor mimics a PIVI actuator operating under the low-frequency assumption. Modifications to the transconductance amplifier were presented that allowed parasitic impedance to be increased by a minimum factor of three.
The modified Pierce oscillator circuit was tested under conditions that simulated a powered PIVI actuator. Results showed the oscillation frequency was an invertible function of the core-insertion distance of the variable inductor. It was also observed that the oscillation frequency varied less than 3% in the presence of various disturbance currents through the variable inductor. The tested conditions simulated a powered PIVI actuator, so it was considered likely that these two behaviors would also be observed if the modified Pierce oscillator was used with an actual PIVI actuator. While these results are not definitive, they suggest that the modified Pierce oscillator could be used as a self-sensing methodology for PIVI type voice-coil actuators. However, more work will be needed to verify this behavior with an actual PIVI type voice-coil actuator
Dispelling the Myths Behind First-author Citation Counts
No full textWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
Dr. Glendon Swarthout
No full textHosted by Roger M. Busfield, MSU Assistant Professor of Speech and Theater, Meet the Author is designed to introduce a general audience to a contemporary author and their work through in-depth interviews. This episode features a conversation between Dr. Glendon Swarthout, prolific author and English professor at MSU, and assistant professors Sam S. Baskett and Theodore B. Strandness
Simulation of thermal plant optimization and hydraulic aspects of thermal distribution loops for large campuses
No full textFollowing an introduction, the author describes Texas A&M University and its utilities system. After that, the author presents how to construct simulation models for chilled water and heating hot water distribution systems. The simulation model was used in a $2.3 million Ross Street chilled water pipe replacement project at Texas A&M University. A second project conducted at the University of Texas at San Antonio was used as an example to demonstrate how to identify and design an optimal distribution system by using a simulation model. The author found that the minor losses of these closed loop thermal distribution systems are significantly higher than potable water distribution systems. In the second part of the report, the author presents the latest development of software called the Plant Optimization Program, which can simulate cogeneration plant operation, estimate its operation cost and provide optimized operation suggestions. The author also developed detailed simulation models for a gas turbine and heat recovery steam generator and identified significant potential savings. Finally, the author also used a steam turbine as an example to present a multi-regression method on constructing simulation models by using basic statistics and optimization algorithms. This report presents a survey of the author??s working experience at the Energy Systems Laboratory (ESL) at Texas A&M University during the period of January 2002 through March 2004. The purpose of the above work was to allow the author to become familiar with the practice of engineering. The result is that the author knows how to complete a project from start to finish and understands how both technical and nontechnical aspects of a project need to be considered in order to ensure a quality deliverable and bring a project to successful completion. This report concludes that the objectives of the internship were successfully accomplished and that the requirements for the degree of Degree of Engineering have been satisfied
Intern experience at CH���M Hill, Inc.: an internship report
No full textIncludes author's vita"Submitted to the College of Engineering of Texas A&M University in partial
fulfillment of the requirement for the degree of Doctor of Engineering."Includes bibliographical referencesA review of the author's internship experience with CH���M HILL, Inc.
during the period September 1975 through May 1976 is presented. During this nine month
internship the author worked as an Engineer II in the Industrial Processes discipline of this
large consulting engineering firm... The author's prime responsibility was as one of three
lead design engineers on the design of a large wastewater treatment facility for a pulp mill
in Hoquiam, Washington owned by ITT Rayonier Inc. The work generally consisted of the design
of individual treatment units and associated piping and pumping. The purpose of the project
was to provide wastewater treatment capabilities that would satisfy the effluent limitations
(standards) imposed upon the mill by the State of Washington Department of Ecology and the
U.S. Environmental Protection Agency. The author's assignment also entailed necessary
interaction with the project manager and other CH���M HILL design engineers and support staff
members, the client's representatives, and representatives of two other consulting engineering
firms working on the project. Thus, the internship position at CH���M HILL provided considerable
experience coordinating the author's work with the work of other engineers, guiding the design
and administrative efforts of a support staff, and interacting regularly with the client and
other consulting firms. This broad exposure to a variety of engineering and organizational
problems provided a valuable educational experience
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