A pulsed beam of hyperthermal fluorine atoms with an average translational energy of 4.8 eV has been used to demonstrate anisotropic etching of Si. For 1.4 Hz operation, a room-temperature etch rate of 300 Å/min for Si~100! has been measured at a distance of 30 cm from the source. A 14% undercutting for room-temperature etching of Novolac-masked Si features was achieved under single-collision c...

Rule-based argumentation systems are developed for reasoning about defeasibleinformation. They take as input a theory made of a set of facts, a set of strictrules, which encode strict information, and a set of defeasible rules which describegeneral behavior with exceptional cases. They build arguments by chaining suchrules, define attacks between them, use a semantics for evalua...

Quantifying the impact of submarine melting on calving is central to understanding response marine-terminating glaciers ocean forcing. Modeling and observational studies suggest potential for amplify (the multiplier effect), but there little consensus as under what conditions this occurs. Here, by viewing a glacier an elastic beam, we propose analytical basis presence or absence effect. We show...

Abstract This paper develops a logical theory that unifies all three standard types of argumentative attack in AI, namely rebutting, undercutting and undermining attacks. We build on default justification logic already represents rebutting attacks, we add Intuitively, does not target inference, as undercutting, or conclusion, but rather attacks an argument’s premise starting point for reasoning...

The use of roller crimpers to terminate plants and obtain a natural mulch before cash crop establishment has been identified as valid sustainable approach control weeds. Several enhancements have evaluated improve speed up plant termination avoid delays in planting consequent yield losses, which can occur with standard crimpers. In the present study, new prototype machine provided crimper an un...