Achieving 10 ps coincidence time resolution in TOF‐PET is an impossible dream

Transport Integration - an Impossible Dream?

Transport Integration and an Integrated Transport Policy have been widely espoused for many years, yet remain an ambiguous and ill-defined concept. After featuring strongly in the 1998 Transport Policy White Paper, recently transport integration has received less emphasis. However it appears it is set for a return under the new Transport Secretary, Lord Adonis. This paper explores the meaning o...

Harmonised consent in international research consortia: an impossible dream?

Introduction It is well recognised that it can be difficult for researchers to ensure that proper consent provisions are in place for their research project. If this can be difficult for those conducting a single site study, those difficulties can be compounded when that study becomes a member of an international scientific research consortium. These consortia bring together often diverse group...

Health human resources planning in an interdisciplinary care environment: to dream the impossible dream?

Achieving sub-10-nm resolution using scanning electron beam lithography

Achieving the highest possible resolution using scanning-electron-beam lithography (SEBL) has become an increasingly urgent problem in recent years, as advances in various nanotechnology applications have driven demand for feature sizes well into the sub-10-nm domain. While SEBL has the highest resolution of nearly any conventional patterning technique available, reliably defining features at t...

A Pc-based Time Interval Counter with 200 Ps Resolution

This paper describes the design and technical features of the precise time-interval counters realized as PC computer boards with ISA, PCI, and PXI interfaces. Thanks to the use of a specialized, interpolating counter chip fabricated in CMOS FPGA technology, the 200 ps resolution (1 LSB Least Significant Bit) was achieved in single-shot measurements of time intervals within the range from 0 to 4...