89,662 research outputs found
Aerospace vehicle
A dual structure aerospace vehicle is described which has an aeroshell structure and an internally disposed separable and reusable integral tank/thrust structure. The tank/thrust structure is inuslated for cryogenic fuels and the cavity within aeroshell is insulated from the tank/thrust structure. An internal support ring within the cavity serves as an attachment for lugs on the tank/thrust structure via double hinges. The aft end of tank/thrust structure is provided with rocket engines and exit nozzles with a trunnion supporting the tank/thrust structure within the aeroshell
Polarizability of molecular hydrogen
Static dipole electric polarizabilities of molecular hydroge
A look at long-term developments in the distribution of income
Developments in the distribution of income have received much attention over the past decade. Several analysts have argued that income gains have gone almost exclusively to the highest paid 20 percent of the population, leaving no gains to the remaining 80 percent. ; Joseph H. Haslag and Lori L. Taylor examine developments in income inequality over the past forty years and estimate which factors account for these changes over time. While some researchers have found that income distribution became more equal during the 1950s and 1960s and then less equal after the mid-1970s, Haslag and Taylor find evidence that an upward trend in income inequality has been occurring since the early 1950s. They also find that movements in the income inequality measure are mostly determined by persistence; that is, income inequality adjusts gradually. Demographic features account for nearly 25 percent of the variation in income inequality, while policy actions explain less than 15 percent.Income distribution
An atlas of GEOS-3 radar altimeter data for data buoy comparison studies
An atlas is compiled to identify times and dates when GEOS-3 altimeter data was taken in the vicinity of data buoys. The time period covered is from GEOS launch to April 9, 1978. Two buffer areas are considered for each of the various buoy locations to determine the simultaneity of GEOS and buoy data. The two buffer areas are ? or - 0.25 degrees and ? or - 1 degree
Research on digital transducer principles. Volume 10 - Thin film titanium dioxide by chemical vapor deposition, 1 July - 31 December 1968
Thin film titanium dioxide by high temperature vapor depositio
Daze fasteners
A daze fastener system for connecting two or more structural elements wherein the structural elements and fastener parts have substantially different coefficient of thermal expansion physical property characteristics is employed in this invention. By providing frusto-conical abutting surfaces between the structural elements and fastener parts any differences in thermal expansion/contraction between the parts is translated to sliding motion and avoids deleterious thermal stresses in the connection. An essential feature for isotropic homogeneous material connections is that at least two sets of mating surfaces are required wherein each set of mating surfaces have line element extensions that pass through a common point
Planetary biology and microbial ecology. Biochemistry of carbon and early life
Experiments made with cyanobacteria, phototrophic bacteria, and methanogenic bacteria are detailed. Significant carbon isotope fractionation data is included. Taken from well documented extant microbial communities, this data provides a basis of comparison for isotope fractionation values measured in Archean and Proterozoic (preCambrian) rocks. Media, methods, and techniques used to acquire data are also described
Daze fasteners
A daze fastener system for connecting two or more structural elements wherein the structural elements and fastener parts have substantially different coefficient of thermal expansion physical property characteristics is employed in this invention. By providing frusto-conical abutting surfaces between the structural elements and fastener parts any differences in thermal expansion/contraction between the parts is translated to sliding motion and avoids deleterious thermal stresses in the connection. An essential feature for isotropic homogeneous material connections is that at least two sets of mating surfaces are required wherein each set of mating surfaces has line element extensions that pass through a common point
A Naturalistic Study of Narrative: Exploring the Choice and Impact of Adversity Versus Other Narrative Topics
Objective: Many narrative interventions require participants to write about trauma and adverse experiences, but some research suggests that open-ended topic prompts can also be effective. In this study, we investigated the topics participants chose to write about in a values-narrative program that offered wide discretion in topic and theme, and explored how that was associated with perceptions of investment and impact. Method: Participants were 717 individuals (68% women) from the rural South, United States who had participated in a values-narrative program. Results: Almost half of the narratives (44%) focused on an adverse experience as part of the development of their personal values. Other personal stories were also common (37%), and only 19% wrote a narrative not connected to a personal life experience. Participants who had more exposure to family or peer victimization were more likely to write about adversity. Participants who wrote about adversity and shared their narratives with others reported more positive and fewer negative impacts. Encouragement and more time writing were also associated with better outcomes. Conclusion: When given the choice of essay topic, participants who chose to write about an adverse event were likely to have had a more meaningful writing experience. Values narratives offer a potentially important opportunity for incorporating narrative into primary prevention programs, because they can be used with groups that include individuals who have and have not experienced adversity. Narratives have been shown to be a powerful psychological intervention and expanding to primary prevention holds considerable promise. Further, they do not require prior disclosure of adversity. (PsycINFO Database Record (c) 2016 APA, all rights reserved
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