Retrospective analysis of surgical outcomes for enucleation in pediatric retinoblastoma stage 5B using the snare wire loop (n = 55) and standard curved enucleation scissors (n = 22) revealed that a statistically significant longer mean optic nerve length was obtained with the snare (13.35 mm) compared with scissors (11.05 mm; P = .005). Four scissor cases had prolonged bleeding and required thr...

In summary, we described the use of laser scissors and tweezers from three perspectives: (a) the historical background from which these two techniques evolved, (b) an understanding and lack of understanding of the mechanisms of interaction with the biological systems, and (c) the applications of the scissors and tweezers alone and in combination. As the technology improves and we gain a better ...

Wendy Contents Chapter 1 Introduction 11 Chapter 2 Scaffolding advice on task selection: A safe path toward self-directed learning in on-demand education 17 Chapter 3 Design and evaluation of a development portfolio: How to improve students' self-directed learning skills 39 Chapter 4 The effects of portfolio-based advice on the development of self-directed learning skills in secondary vocationa...

Image segmentation is a very important topic in computer vision. However, due to the large variation of image content, fully automatic image segmentation for general applications is still an open problem. Therefore, our goal is to develop an interactive image segmentation tool that can accurately extract the desired object boundaries with minimal human efforts. In this paper, we propose a new t...

Consider two simple polygons with equal area. The Wallace–Bolyai–Gerwien theorem states that these polygons are scissors congruent, that is, they can be dissected into finitely many congruent polygonal pieces. We present an interactive application that visualizes this constructive proof. 1998 ACM Subject Classification I.3.5 [Computational Geometry and Object Modelling] Geometric Algorithms, la...