Received (received date) Revised (revised date) We present a simple way to quantize the well-known Margulis expander map. The result is a quantum expander which acts on discrete Wigner functions in the same way the classical Margulis expander acts on probability distributions. The quantum version shares all essential properties of the classical counterpart, e.g., it has the same degree and spec...

Turbo-roundabouts are one of the most frequently recommended road junction design options when it comes to increasing traffic capacity and safety. This is in particular true suburban areas, with dominant flow on main moderate side road. Other intersections handling local considerably constricting availability space usually located vicinity such intersections. Another factor contributing limited...

We present a new class of asymptotically good, linear error-correcting codes based upon expander graphs. These codes have linear time sequential decoding algorithms , logarithmic time parallel decoding algorithms with a linear number of processors, and are simple to understand. We present both randomized and explicit constructions for some of these codes. Experimental results demonstrate the ex...

INTRODUCTION Round expander-implants (Beckers 25 and 50) and anatomical expander-prostheses filled with firm cohesive gel (McGhan Style 150) are established choices for single-stage expander breast reconstruction. Because of their drawbacks we selectively adopted the anatomical Becker-35 expander-implant filled with soft cohesive gel from January 2005. PATIENTS AND METHODS All patients underg...

OBJECTIVE Vertebral compression fractures (VCFs) are common complications of osteoporosis. The expansion of VCFs with a Sky Bone Expander is a new procedure which improves kyphotic deformities and decreases pain associated with VCFs. The purpose of this study was to investigate the preliminary results for the treatment of painful osteoporotic VCFs with a Sky Bone Expander. MATERIALS AND METHO...

Calculations of the energy efficiency expander-generator unit under various operating conditions during heating natural gas in front expander using a heat pump were carried out. It is shown that introduction units supply system Republic Uzekistan, with properly selected system, can be thermodynamically and technically economically advantageous. The results thermodynamic analysis developed energ...

Naohiro Ishii, Yusuke Shimizu, Jiro Ando, Michiko Harao, Masaru Takemae, Kazuo Kishi Department of Plastic and Reconstructive Surgery, Tochigi Cancer Center, Tochigi; Department of Plastic and Reconstructive Surgery, University of the Ryukyus Hospital, Okinawa; Department of Breast Surgery, Tochigi Cancer Center, Tochigi; Department of Plastic and Reconstructive Surgery, Keio University, Tokyo,...

From Wright Brothers 1903 to present day 2003, aeronautical technology has made a profound progress. This paper demonstrates the outcome of this progress in weight, wing area, and engine thrust in three categories of transport aircraft of short to long range, regional jets, and turbo-prop commuter aircraft. Also the paper includes those aircraft with distinct jump in aeronautical technology. Fe...

In this paper, performance of a Turbo coded wireless link is evaluated in the presence of Rayleigh fading for single-input single-output (SISO), single-input multipleoutput(SIMO), multiple-input single-output (MISO) and multiple-input multiple-output (MIMO) system. Turbo encoded and 64-ary Quadrature Amplitude Modulation (QAM) modulated data are further encoded using spacetime block coding (STB...