PURPOSE To digitally stain spectral-domain optical coherence tomography (OCT) images of the optic nerve head (ONH), and highlight either connective or neural tissues. METHODS OCT volumes of the ONH were acquired from one eye of 10 healthy subjects. We processed all volumes with adaptive compensation to remove shadows and enhance deep tissue visibility. For each ONH, we identified the four mos...

Digitally signing a digital document is a straightforward procedure; however, when the digital document contains dynamic content, the digital signature may remain valid but the viewed document may not be the same as the document when viewed by the signer. Other similar problems exist even with ‘static’ documents, if the appearance of a document can be changed. In this paper, we consider previou...

3D printing techniques allow the laboratory-scale design and production of reactionware tailored to specific experimental requirements. To increase the range and versatility of reactionware devices, sealed, monolithic reactors suitable for use in hydrothermal synthesis have been digitally designed and realized. The fabrication process allows the introduction of reaction mixtures directly into t...

In the single j shell there is a two to one relationship between the spectra of certain even-even and neighbouring odd mass nuclei e.g. the calculated energy levels of J=0+ states in 44Ti are at twice the energies of corresponding levels in 43Ti(43Sc) with J=j=7/2. Here an approximate extension of the relationship is made by adopting a truncated seniority scheme i.e. for 46Ti and 45Sc we get th...

This paper deals with the problem of the shaft speed estimation in a digitally controlled DC servo drive. Some different observer structures are presented and compared. The developed extended observers enable proper estimation of the plant state variables, even under the action of a constant or slow varying load torque disturbance. Two useful procedures for the adjustment of observer gains are ...

Digitally signing a digital document is a straightforward procedure; however, when the digital document contains dynamic content, the digital signature may remain valid but the viewed document may not be the same as the document when viewed by the signer. Other similar problems exist even with ‘static’ documents, if the appearance of a document can be changed. In this paper, we consider previou...