Fabrication and test of lightweight honeycomb sandwich structures Final report

Fabrication and testing of lightweight honeycomb sandwich structure

Sexualized Music\u27s Effect on Adolescent and Emerging Adult Behavior: a Meta-Analysis

Reports on sexual activity among U.S. adolescents have shown a rise in their seriousness (Martino, Collins, Elliott, Strachman, Kanouse, & Berry, 2006). Such young sexual initiation is seen as a predictor of overall riskier sexual behavior such as having a multitude of sexual partners, not using any protective birth control and taking part in unwanted sex (Brown, L\u27Engle, Pardun, Guo, Kenneavy, & Jackson, 2006; Martino et at., 2006; Parkes, Wight, Hunt, Henderson, & Sargent, 2013; Price & Hyde, 2009; Primack, Douglas, Fine, & Dalton, 2009; Steinberg & Monahan, 2010). It is apparent that such riskier sexual behaviors result in higher rates of STI\u27s and unwanted pregnancies (Brown et al., 2006; Parkes et al., 2013; Price & Hyde, 2009; Primack et al., 2009; Martino et al., 2006; Steinberg & Monahan, 2010). In September 2007, the United States Congress held a hearing on the gravity of sexual music content and their relationship to risky sexual behavior (Kistler & Lee, 2009). Recognition has also been found through studies, including some self-reported, concluding that young populations seek out entertainment media to facilitate as a tool of insight into personal development in the areas of sexual norms, and as a means of reference in establishing their own identities (Brown et al., 2006; Coyne et al., 2013; Coyne & Padilla-Walker, 2015; Primack et al., 2009). Music has been suggested to have the largest personality developing influence when compared to other media forms (Primack et al., 2009). Being that adolescence is the time of accepting or rejecting normalizations, including those distorted, (Turner, 2011) it remains a subject group that provides great value to this study. An organized computer search was directed with the assistance of MedLine, PsycINFO, Communications, and Mass Media in April and May 2017 in search of relevant articles. From here strategic elimination of those without inclusion criteria were made. The remaining data was coded and assessed through the Comprehensive Meta-Analysis (CMA) software program. Although, suitable to both random and fixed effect models, only random models were reported in accordance to Hunter and Schmidt\u27s (2005) argument on population variation. Positive effects signified associations with music in the form of lyrics or video and that to sexual behaviors. All studies presented said positive relationship in support of the music as sexual behavior indicator perspective. Generally, music is not something people are thinking critically about (Burgess & Burpo, 2012) bringing light to the closer but still not reached need in media literacy education. This is essential as it is not realistic to expect media to stop selling sex, therefore the responsibility for change lies in those who can use this knowledge to promote its awareness and ultimately help our youth become better prepared for making healthy, responsible deductions out of the sexually clad music we all enjoy. It is true that the wheels are already in motion (Wright et al., 2016; Wright, Dillman Carpentier, Hopper, & Warburton, 2017); the goal of this study was to keep up its momentum to continue propelling the movement forward

An Evaluation of Physical Disk I/Os for Complex Object Processing

In order to obtain the performance required for nonstandard database environments, a hierarchical complex object model with object references is used as a storage structure for complex objects. Several storage models for these complex objects, as well as a benchmark to evaluate their performance, are described. A cost model for analytical performance evaluation is developed, and the analytical results are validated by means of measurements on the DASDBS, complex object storage system. The results show which storage structures for complex objects are the most efficient under which circumstance

Non-linear Relaxation of Interacting Bosons Coherently Driven on a Narrow Optical Transition

We study the dynamics of a two-component Bose-Einstein condensate (BEC) of $^{174}$Yb atoms coherently driven on a narrow optical transition. The excitation transfers the BEC to a superposition of states with different internal and momentum quantum numbers. We observe a crossover with decreasing driving strength between a regime of damped oscillations, where coherent driving prevails, and an incoherent regime, where relaxation takes over. Several relaxation mechanisms are involved: inelastic losses involving two excited atoms, leading to a non-exponential decay of populations; Doppler broadening due to the finite momentum width of the BEC and inhomogeneous elastic interactions, both leading to dephasing and to damping of the oscillations. We compare our observations to a two-component Gross-Pitaevskii (GP) model that fully includes these effects. For small or moderate densities, the damping of the oscillations is mostly due to Doppler broadening. In this regime, we find excellent agreement between the model and the experimental results. For higher densities, the role of interactions increases and so does the damping rate of the oscillations. The damping in the GP model is less pronounced than in the experiment, possibly a hint for many-body effects not captured by the mean-field description.Comment: 7 pages, 4 figures; supplementary material available as ancillary fil

Depletion of carriers and negative differential conductivity in an intrinsic graphene under a dc electric field

The heating of carriers in an intrinsic graphene under an abrupt switching off a dc electric field is examined taking into account both the energy relaxation via acoustic and optic phonons and the interband generation-recombination processes. The later are caused by the interband transitions due to optical phonon modes and thermal radiation. Description of the temporal and steady-state responses, including the nonequilibrium concentration and energy as well as the current-voltage characteristics, is performed. At room temperature, a nearly-linear current-voltage characteristic and a slowly-varied concentration take place for fields up to -- 20 kV/cm. Since a predominant recombination of high-energy carriers due to optical phonon emission at low temperatures, a depletion of concentration takes place below -- 250 K. For lower temperatures the current tends to be saturated and a negative differential conductivity appears below -- 170 K in the region of fields -- 10 V/cm.Comment: 8 pages, 10 figures, extended versio

For Us -- Pasture Renovation Paid Off

Renovating a permanent pasture may double its carrying capacity. And this cost probably will be less than you think

You Can Simplify Oat-Legume-Grass Seeding

An oat-legume-grass mixture can be seeded successfully in one trip over the field with a single-hopper machine. Seed separation isn\u27t a problem, and you can achieve uniform seed distribution and a satisfactory planting depth