Double swivel toggle release

A pyrotechnic actuated structural release device is disclosed which is mechanically two fault tolerant for release. The device comprises a fastener plate and fastener body each attachable to one of a pair of structures to be joined. The fastener plate and the fastener body are fastened by a dual swivel toggle member. The toggle member is supported at one end on the fastener plate and mounted for universal pivotal movement thereon. Its other end is received in a central opening in the fastener body, and has a universally mounted retainer ring member. The toggle member is restrained by three retractable latching pins symmetrically disposed in equiangular spacing about the axis of the toggle member and positionable in latching engagement with the retainer ring member on the toggle member. Each pin is retractable by a pyrotechnic charge, the expanding gases of which are applied to a pressure receiving face on the latch pins to effect retraction from the ring member. While retraction of all three pins releases the ring member, the fastener is mechanically two fault tolerant since the failure of any single one or pair of the latch pins to retract results in an asymmetrical loading on the ring member and its dual pivotal movement ensures a release

Skull Flexure from Blast Waves: A Mechanism for Brain Injury with Implications for Helmet Design

Traumatic brain injury [TBI] has become a signature injury of current military conflicts, with debilitating, costly, and long-lasting effects. Although mechanisms by which head impacts cause TBI have been well-researched, the mechanisms by which blasts cause TBI are not understood. From numerical hydrodynamic simulations, we have discovered that non-lethal blasts can induce sufficient skull flexure to generate potentially damaging loads in the brain, even without a head impact. The possibility that this mechanism may contribute to TBI has implications for injury diagnosis and armor design.Comment: version in press, Physical Review Letters; 17 pages, 5 figures (includes supplementary material

Portraits and Principles (Part One)

Portraits and Principles of the World\u27s Great Men and Women with Practical Lessons on Successful Life by over Fifty Leading Thinkers is designed and arranged by William C. King. This book points out and illustrates the principles that govern those who succeed and make the most of life and its possibilities (description on page 9 of the part one PDF). The goal of the writing is to help readers achieve their goals and lead successful lives. Each chapter, of which there is 100, is written by a different self-help author. Part one of this collection includes the preface, table of contents, introduction, author descriptions and photographs, publishers’ introduction, and photos of other inspiring individuals. Part one begins the collection of chapters starting with chapter one “Our Noblest Birthright.” NOTE: This section of the book has water damage; some of the imagines appear warped and torn.https://openworks.wooster.edu/motherhomeheaven/1026/thumbnail.jp

Portraits and Principles (Part Three)

Portraits and Principles of the World\u27s Great Men and Women with Practical Lessons on Successful Life by over Fifty Leading Thinkers is designed and arranged by William C. King. This book points out and illustrates the principles that govern those who succeed and make the most of life and its possibilities (description on page 9 of the part one PDF). The goal of the writing is to help readers to achieve their goals and lead successful live. Each chapter, of which there is 100, is written by a different self-help author. Part three begins with chapter 60 titled “Delay Loses Fortune.”https://openworks.wooster.edu/motherhomeheaven/1028/thumbnail.jp

Portraits and Principles (Part Two)

Portraits and Principles of the World\u27s Great Men and Women with Practical Lessons on Successful Life by over Fifty Leading Thinkers is designed and arranged by William C. King. This book points out and illustrates the principles that govern those who succeed and make the most of life and its possibilities (description on page 9 of the part one PDF). The goal of the writing is to help readers achieve their goals and lead successful lives. Each chapter, of which there is 100, is written by a different self-help author. Part two begins the collection of chapters starting with chapter one “Our Noblest Birthright.”https://openworks.wooster.edu/motherhomeheaven/1027/thumbnail.jp

Impact of Short Lifetime Limits on Child Neglect

The Great Recession that officially began in December 2007 nationally resulted in a loss of income on the part of many families with children who in turn, relied on a variety of safety nets, including cash assistance from Temporary Assistance for Needy Families (TANF) program. Loss of income has been recognized as a major risk factor of child maltreatment, in particular child neglect. During its 2007 recession, Arizona shortened its TANF lifetime limits substantially which resulted in transfer income losses for many families with children on TANF. Using time-series analysis, the present study determines the relative impact of TANF’s shorter than 60-month time limits on the Arizona’s child neglect caseload. This paper shows that there is a strong inverse relationship between child neglect and the decrease in the number of families receiving cash assistance from TANF. Key findings reveal that all else constant, under the presence of 36-month time limit there was an increase of 190 more children substantiated for neglect in the state of Arizona (p \u3c .001). The corresponding figure under the 24 month life time limit was 461 cases per month (p \u3c .001). This study reminds us that policies in one program should not be implemented in a vacuum but rather that their consequences for children and families in related programs need to be closely analyzed

The Impact of the Economy and Welfare Policy on Welfare Accessions: Implications for Future Reforms

This longitudinal study analyzes the impact of labor market conditions and welfare policies accompanying the 1990s waivers granted by the federal government to California and the 1996 Personal Responsibility and Work Opportunity Act (PRWOA) on families entering welfare (accessions). A time series model was specified for analyzing the number of families entering welfare from January 1983 to December 1998. The findings suggest that in 1998 under PRWOA, all else constant, there were fewer case openings. Prior to the PRWOA, policy shifts of the 1990s did not have an impact on case openings. The findings also show that under economic recovery fewer families applied for welfare. The implications of these findings are that drastic measures such as time-limited welfare should be re-examined since a favorable economic environment allows many recipients to remain off public assistance even in the absence of such measures

The Impact of the Economy and Welfare Policy on Welfare Accessions: Implications for Future Reforms

This longitudinal study analyzes the impact of labor market conditions and welfare policies accompanying the 1990s waivers granted by the federal government to California and the 1996 Personal Responsibility and Work Opportunity Act (PRWOA) on families entering welfare (accessions). A time series model was specified for analyzing the number of families entering welfare from January 1983 to December 1998. The findings suggest that in 1998 under PRWOA, all else constant, there were fewer case openings. Prior to the PRWOA, policy shifts of the 1990s did not have an impact on case openings. The findings also show that under economic recovery fewer families applied for welfare. The implications of these findings are that drastic measures such as time-limited welfare should be re-examined since a favorable economic environment allows many recipients to remain off public assistance even in the absence of such measures

Particle Size Measurements From the First Fundamentals of Ice Crystal Icing Physics Test in the NASA Propulsion Systems Laboratory

This paper presents particle measurements by the Artium Technologies, Inc. Phase Doppler Interferometer and High Speed Imaging instruments from the first Fundamental Ice Crystal Icing Physics test conducted in the NASA Propulsion Systems Laboratory. The work focuses on humidity sweeps at a larger and a smaller median volumetric diameter. The particle size distribution, number density, and water content measured by the Phase Doppler Interferometer and High Speed Imaging instruments from the sweeps are presented and compared. The current capability for these two instruments to measure and discriminate ICI conditions is examined