To the Editor: Despite safety recommendations, the increased availability of personal protective equipment, and the implementation of improved disposal systems, high-risk needlestick injuries continue to occur in unacceptably high numbers in healthcare settings.1 Design features of needle devices are relevant to their high injury risk. For example, butterflytype devices with needle-shielding fe...

The butterfly graphs were originally defined as the underlying graphs of FFT networks which can perform the fast Fourier transform (FFT) very eficiently. Since butterfly graphs are regular of degree four, it can tolerate at most two edge faults in the worst case in order to establish a Hamiltonian cycle. In this paper, we show that butterfly graphs contain a fault-free Hamiltonian cycle even if...

purpose: to determine changes in streoacuity in anisometropic myopic eyes after photorefractive keratectomy (prk). methods: this quasi-experimental clinical trial was performed in myopic patients with at least 1 d of in anisometropia spherical, astigmatic or spherical equivalent who underwent photorefractive keratectomy (prk) using the technolas 217 z excimer laser machine. changes in streoacui...

This paper describes the Common Lisp system that BBN is developing for its ButterflyTM multiprocessor. The BBN ButterflyTM is a shared memory multiprocessor which may contain up to 256 processor nodes. The system provides a shared heap, parallel garbage collector, and window based I/O system. The future construct is used to specify parallelism. THE BUTTERFLYTM LISP SYSTEM For several decades, d...

in this paper, we prove that the wrapped Butterfly graph WBF(d; n) of degree d and dimension n is decomposable into Hamilton cycles. This answers a conjecture of D. Barth and A. Raspaud who solved the case d = 2. Key-words: Butterfly graph, graph theory, Hamiltonism, Hamilton decomposition, Hamilton cycle, Hamilton circuit, perfect matching. (Résumé : tsvp) This work has been supported by the C...

Whole body sterol metabolism in insects has seldom been studied. We were able to design an appropriate study at a butterfly farm in Belize. We collected six larvas of butterfly (Morpho peleides), their food (leaves of Pterocarpus bayessii), and their excretions. In addition, six adult butterflies were collected. The sterols of the diet, the larva, and adult butterfly were analyzed by gas-liquid...

The Butterfly Flower Shower (BFS) Human Behaviour Model describes human behaviour in each demanding, possible accidental situation. The BFS human behaviour model is presented for a traffic situation. The key elements (perception, cognition, reaction) of the human behaviour are identified. Also possible limitations and errors in all elements of human behaviour are presented. The model is present...

A majority of the research results on Wireless Network Coding (WNC) considers only a basic 2-Way Relay Channel (2-WRC) system scenario, where the Complementary Side Information (C-SI) is naturally available at both destinations. Although an extension of the WNC principles from the 2-WRC system to the butterfly network could seem relatively straightforward, several new unconventional phenomena o...

Butterfly Effect is a 3D puzzle game using augmented reality. The key motivation was to create a game that leverages the structure of the physical world during gameplay without requiring the computer to have a detailed model of the space. The butterflies are virtual, but the space the player navigates is physical. The player travels her environment, collecting the butterflies. For butterflies t...

I employed a comparative gene expression approach to address the evolution of butterfly wing pattern formation at several levels, including early pattern determination and pigment gene regulation during late development. Expression analysis of the receptor molecule Notch suggested several previously unknown roles for Notch signaling in butterfly wing patterning. Notch upregulation was found to ...