Abstract Sledgehammer, a component of the interactive proof assistant Isabelle/HOL, aims to increase automation by automatically discharging goals with help external provers. Among these provers are group satisfiability modulo theories (SMT) solvers support for SMT-LIB input language. Despite existing formalizations IEEE floating-point arithmetic in both Isabelle/HOL and SMT-LIB, Sledgehammer e...

The search for present or past life in the Universe is one of the most important objectives of NASA’s exploration missions. Drills for subsurface sampling of rocks, ice and permafrost are an essential tool for astrobiology studies on other planets. Increasingly, it is recognized that drilling via a combination of rotation and hammering offers an efficient and effective rapid penetration mechani...

In a piping system, water hammer occurs when pressure rapidly varies. As result of these conditions, undesirable and damaging outcomes can occur, such as noise, excessive wear fatigue, collapse the system valves. This paper provides review mathematically analysis hammering in check The purpose this is to analyze Various approaches selecting best valve or modifying design are discussed paper. ad...

Objective. The objective of this study was to evaluate the effectiveness and advantages of percutaneous fixation of anterior column acetabular fracture with "hammering technique." Materials and Methods. We retrospectively reviewed 16 patients with percutaneous fixation of anterior column acetabular fracture with "hammering technique." There were 11 males and 5 females with an average age of 38....

Hammering with a hand tool appears early in life. Skillful hammering involves accommodating movements to properties of the hammer, orienting the hammer's head to the item to be struck, and maintaining stable posture during forceful action with the arm(s). We aimed to characterize development of these abilities in young children (12, 18, and 24 months old). Children struck at a peg with a hammer...

Aperfect storm is developing as this decade closes. Hospital investment revenue is in a free fall, selfpay revenue streams are at risk, and capital acquisition is challenging against a backdrop of a global financial collapse. However, just when it could not get any worse, a tsunami that has been quietly building offshore for years in a climate of stakeholder unrest now threatens all but the bes...

Although the U.S. has studied space suit performance for decades, relatively little is known about how the astronaut moves and interacts within the space suit. We propose the use of insuit sensor systems to characterize this interaction and present our results using pressure sensors and inertial measurement units (IMUs) inside the David Clark Mobility Mock-Up and the Mark III space suit from NA...