Weare developing a 1 mm resolution breastdedicated Positron Emission Tomography (PET) system in an effort to increase the role of PET in earlier stages of breast cancer management. The system consists of two 16 cm x 9 cm x 2 cm detector panels constructed using stacked layers of 8x8 arrays of 1 mm LSO scintillation crystals coupled to Position Sensitive Avalanche Photodiodes (PSAPDs). Prelimina...

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Security in computing systems to date has focused mostly on software. In this research, we explore the application and enforceability of well-defined security requirements in hardware designs. The principal threats to hardware systems demonstrated in the academic literature to date involve some type of subversion, often called a Hardware Trojan or malicious inclusion. Detecting these has proved...

K e y w o r d s : Sim: flares Sun: particle emission Sun: radio radiation

BACKGROUND Coil occlusion of patent ductus arteriosus (PDA) is now widely accepted as the first-line treatment, but there are few reports of age-dependent differences in the complications associated with this technique. METHODS AND RESULTS Sixteen patients (11 adults, 5 children) with a PDA larger than 3 mm, who underwent coil occlusion at Sapporo Medical University Hospital between September...

Conformal, steerable lens antennas are of particular interest for millimeter-wave (mm-wave) antenna designers, as they enable low cost solutions applications such 5G mobile communications, radio-wave imaging, and satellite communications. Recent advances in additive manufacturing technology have opened up new possibilities realizing graded-dielectric electromagnetic devices. In this letter, a c...