There is, I think, something ethereal about i —the square root of minus one. I remember first hearing about it at school. It seemed an odd beast at that time—an intruder hovering on the edge of reality.

Usually familiarity dulls this sense of the bizarre, but in the case of i it was the reverse: over the years the sense of its surreal nature intensified. It seemed that it was impossible to write mathematics that described the real world in …

I and i

다중혈관 관상동맥 환자에서 y-문합을 이용하여 양쪽 내흉동맥만을 사용한 우회술의 조기 성적

[신간의 별자리x] 우리/미술, 그리고 ‘슬픔의 박물관’

The American Society for Testing and Materials (ASTM) is an independent organization devoted to the development of standards.

American Society for Testing and Materials

비만아 부모의 돌봄 경험: q 방법론

This paper reports the first electrolysis-based oxygen generation and transportation device for the treatment of retinal ischemia; containing an isolated biocompatible electrolyte and inductive power transfer for on-demand oxygen. A finite element model of the retina along with oxygen delivery data demonstrates the feasibility of the device. The estimated therapeutic window for the device was found to be 210 minutes for the light adapted retina, and 55 minutes for the dark adapted retina.

Oxygen generation by electrolysis to treat retinal ischemia

In various embodiments, implants including reservoirs, such as intraocular lenses, feature flexible membranes and valves integrated therewith, the valves having apertures that are normally closed.

Flexible valve structure for implantable reservoir

Implantable drug-delivery devices

An imaging system design procedure for miniature wide-angle cameras with software correction of distortion is presented. Analysis of the effect of distortion on the software-corrected, final image during optical design allows for optimized dewarped final images.

Mark S. Humayun

Papers

Oxygen generation by electrolysis to treat retinal ischemia

Flexible valve structure for implantable reservoir

Implantable drug-delivery devices

Optimal Design of Miniature Wide-Angle Computational Cameras for Retinal Prostheses and Wearable Visual Aids

Vorrichtungen zur intraokularen Arzneimittelabgabe