VARIABLE RADIUS HELIX POTENTIOMETER: PRACTICAL ISSUES

A Simplified Recording Potentiometer.

(WITH SIX FIGURES) Some years ago (1) the author described a recording potentiometer designed primarily to meet the requirements of flexibility so necessary in physiological work. A number of these instruments were built and are still in use. Ever since this earlier instrument was developed the writer has continued to improve and simplify until now one which is far superior in all respects to t...

A single-molecule potentiometer.

Controlling electron transport through a single-molecule device is key to the realization of nanoscale electronic components. A design requirement for single molecule electrical devices is that the molecule must be both structurally and electrically connected to the metallic electrodes. Typically, the mechanical and electrical contacts are achieved by the same chemical moiety. In this study, we...

Practical Variable-Arity Polymorphism

Just as some functions have uniform behavior over distinct types, other functions have uniform behavior over distinct arities. These variable-arity functions are widely used in scripting languages such as Scheme and Python. Statically typed languages also accommodate modest forms of variable-arity functions, but even ML and Haskell, languages with highly expressive type systems, cannot type che...

Hayfever--practical management issues.

Practical Issues in Process

is that form of abstraction that requires elaboration before execution: the actual implementation is left to the process executor and is bounded either by a formal grammar, a system of constraints, or by the existence of the available building blocks. This kind of abstraction enables one to provide guidance without prejudging the solution (important for generic processes) or straight-jacketing ...