background and aims. because of compromised angulations of implants, the abutments are sometimes prepared. the purpose of this study was to investigate the effect of removing one wall of the implant abutment on the retention of cement-retained crowns. materials and methods. four prefabricated abutments were attached to analogues and embedded in acrylic resin blocks. the first abutment was left ...

Climate change affects fruit crops’ growth and development by delaying ripening, reducing color development, lowering quality yield. The irregular date palm ripening in the past few years is assumed to be related climatic change. current study aimed design validate an automated sensor-based artificial system (S-BARS) combined with ultrasound pretreatment for fruits cv. Khalas. A control was con...

UNLABELLED Environmental heat stress degrades aerobic performance; however, little research has focused on performance when the selected task elicits modest elevations in core body temperature (<38.5 degrees C). PURPOSE To determine the effect of environmental heat stress, with modest hyperthermia, on aerobic performance and pacing strategies. METHODS After a 30-min cycling preload at 50% V...

Envisioning has been used extensively to model behavior of physical systems. Envisioning generates the qualitatively distinct possible behaviors without numerically simulating every possible set of input conditions and model parameters. This paper applies envisioning to analyze course of action (COA) diagrams to determine the qualitatively distinct outcomes of military operations. In order to a...

One of the central challenges in reinforcement learning is to balance the exploration/exploitation tradeoff while scaling up to large problems. Although model-based reinforcement learning has been less prominent than value-based methods in addressing these challenges, recent progress has generated renewed interest in pursuing modelbased approaches: Theoretical work on the exploration/exploitati...