The Effects of the Big 6 + 6 Skills Training on Daily Living Skills for an Adolescent With Intellectual Disability.

The current study evaluated the effects of training Big 6 + 6 motor skills on untrained daily living skills. Precision teaching suggests that improved speed of component behaviors can lead to better performance of composite skills. Researchers used a pre-post probe single-subject design to evaluate the effects of frequency building on the motor tasks of push and grasp, as well as the associated effects on the composite skills prior to and following intervention on the component skills. Results suggest that the participant increased his frequencies on all of the component skills. The speed and accuracy of composite skills were higher following the intervention. Researchers also assessed for generalization to other significant contexts.

Development of Laser-Based Powder Bed Fusion Process Parameters and Scanning Strategy for New Metal Alloy Grades: A Holistic Method Formulation.

In spite of the fast growth of laser-based powder bed fusion (L-PBF) processes as a part of everyday industrial practice, achieving consistent production is hampered by the scarce repeatability of performance that is often encountered across different additive manufacturing (AM) machines. In addition, the development of novel feedstock materials, which is fundamental to the future growth of AM, is limited by the absence of established methodologies for their successful exploitation. This paper proposes a structured procedure with a complete test plan, which defines step-by-step the standardized actions that should be taken to optimize the processing parameters and scanning strategy in L-PBF of new alloy grades. The method is holistic, since it considers all the laser/material interactions in different local geometries of the build, and suggests, for each possible interaction, a specific geometry for test specimens, standard energy parameters to be analyzed through a design of experiment, and measurable key performance indicators. The proposed procedure therefore represents a sound and robust aid to the development of novel alloy grades for L-PBF and to the definition of the most appropriate processing conditions for them, independent of the specific AM machine applied.