With the rise in prevalence of Autism Spectrum Disorder (ASD) in children, additional resources for mental health professionals to support the caregivers and families are necessary. The present study ...examined the psychometric properties of a brief, systems-oriented, strength-based assessment, the Family Relationship Hope Scale (FRHS), with parents and caregivers of children with ASD (n = 196). The FRHS is a four item, self-administered survey that examines the hopefulness a person has towards their family's ability to overcome life's challenges together. We conducted both exploratory and confirmatory factor analyses to assess factor structure of the assessment. Results supported the FRHS as a single factor structure with good model fit and internal consistency. The use of the FRHS could be beneficial for clinicians who work with families to focus on their areas of strength (e.g., hope) rather than deficits (e.g., stress, depression).
The authors investigate aluminum shaped charge jet (SCJ) penetration into an aluminum alloy target at 8–11 km/s velocities. The analysis of kinetics, penetration parameters and structures of cavern ...surfaces formed after the penetration show that at velocities exceeding 9–11 km/s, the hydrodynamic character of the penetration changes due to the melting of the interacting materials. When during the penetration process SCJ velocity exceed 9 km/s, porous layer of aluminum nanospheres with 20–100 nm in diameter form in the penetration region. The results obtained are appropriate for developing spacecraft shield protections against most dangerous space fragments.
•Hydrodynamic penetration of shaped charge jet changes due to the melting.•Melting destabilizes penetration at velocities over 9 km/s.•Porous layer of nanospheres forms on the cavern walls.•Number of nanospheres decreases with increasing penetration depth.
The use of high-modulus ceramic materials under conditions simulating the screen protection of space objects from damage by fragments of space man-made debris is considered. The introduction of an ...aluminum jet at a speed of ~ 10 km/s into an aluminum barrier located behind brittle material screens was experimentally studied. A comparative analysis of the parameters of the residual cavity in the barrier made it possible to reveal the effect of the structural rearrangement of the ceramic material on the effectiveness of screen protection.
The method of determination combustion rate of powdered porous silicon with limited space is presented. The values of the combustion rates of porous silicon are close to the values of the rates of ...explosives.
In this Letter, we study the destruction of a duralumin barrier when exposed to an aluminum jet (analogous to a fragment of industrial debris) at a velocity of 7–11 km/s in the presence of copper and ...aluminum metal shields. The effectiveness fraction of the shield protection, which is determined by the expansion of parts of the destroyed impactor between the shields, is distinguished. An increase in the efficiency of the shield protection due to the phase transitions of the interacting materials of the impactor and shield is determined.
The penetration of an aluminum jet into an aluminum alloy target with a speed of 8–11 km/s is investigated. An analysis of the kinetics and parameters of introduction, and the condition of the ...surface of the cavity after penetration suggests that the hydrodynamic nature of penetration is violated at speeds of more than 9 km/s because of fusion of interacting metals. The results of the study are intended to develop screen protection for spacecraft from the most dangerous fragments of space debris.
The state of the cavity surface after the introduction of the copper jet into the metal barrier has been recorded and analyzed. A comparison of the cavity surface for jets providing only melting or ...melting with evaporation during unloading of shock-compressed copper was carried out. The final stages of pore development during solidification are fixed. The volume fraction of evaporation was estimated. The rapid unloading of the implementation areas and the emergence of pores in the volume before the destruction in the layer of the spreading jet result in an increase in the efficiency of the spacecraft screen protection during the evaporation of a fragment of artificial debris.
Stress–strain curves are recorded during a high-speed impact and slow loading for nanocrystalline and coarse-grained iron and copper. The strain-rate sensitivity is determined as a function of the ...grain size and the strain. It is shown that the well-known difference between the variations of the strain-rate sensitivity of the yield strength with the grain size in fcc and bcc metals can be extended to other strain dependences: the strain-rate sensitivity of flow stresses in iron decreases with increasing strain, and that in copper increases. This difference also manifests itself in different slopes of the dependence of the strain-rate sensitivity on the grain size when the strain changes.
This article presents results of electromagnetic (EM) simulation and experimental research of an original tapered slot antenna with modified topology and double-sided metallization. A comparison of ...this antenna with classical and antipodal topology is performed. Advantages and disadvantages of each of them are described. It is shown that due to the mirror symmetry planes in E- and H-planes, the proposed antenna has the highest crosspolar isolation and demonstrates electrodynamic characteristics acceptable for practice in the frequency range 0.5–6.6 GHz. Transition from an asymmetric 50-Ω coaxial line to a symmetric 100-Ω slotted line is made with the help of a balun placed in the same plane as the antenna. The latter simplifies the manufacturing process and radically reduces the longitudinal dimensions of the antenna. The research results indicate on potential application possibilities of the developed tapered slot antenna in various areas of wireless technologies.
Due to the lack of both common conception concerning etiology of male infertility and data about disorders of immune homeostasis concomitant with dysbiosis of urogenital tract in men with damages of ...reproductive function depending on features of alcoholic anamnesis, the aim of our research is studying influence of microbiocenoses in ejaculate on nonspecific immune factors in males suffering from fertile function damages depending on kind and amount of alcohol used. This article deals with findings concerning condition of semen analysis, cellular agents in innate immunity, bacteriological investigation of ejaculate in 73 males divided in 5 groups, depending on amount and kind of alcohol. According to data obtained it was established that all patients in groups under research suffered from incomplete phagocytosis in neutrophils links secondary to retaining functional and metabolic reserve in using strong alcoholic drinks and in its exhaustion in drinking excess bear and mixed alcohol. Studying microflora in ejaculate has shown presence only G+ flora (Staphylococcus haemolyticus, Staphylococcus epidermidis, Enterococcus faecalis) in drinking excess strong alcohol but in drinking excess bear and mixed alcohol both G+ microflora (Staphylococcus epidermidis, Enterococcus faecalis) and G- microflora (Escherichia coli, Klebsiella pneumoniae) have been observed. Associations of microorganisms have been revealed in males of all groups under research, in this case the most number of them has been revealed in drinking excess bear. In turn, the semen analysis showed that the most evident changes in ejaculate fertile properties were being observed at middle and high risk in consumption of beer and alcohol mixed, as astenoteratozoospermia. Proceeding from the data obtained one may suppose that drinking alcohol mixed is the factor causing development of incompetence for nonspecific protection, because it might lead to damages of microbiocenoses in ejaculate and male fertility reduced consequently.
