The retail price a household pays for the last unit of grid-supplied electricity consumed is an important driver of the decision to install a rooftop solar photovoltaic (PV) system. This price is the cost a household avoids by consuming a kilowatt-hour (KWh) from their rooftop solar system. Consequently, if the levelized cost of a KWh from a rooftop solar system is less than this retail price, ...

This paper investigates the popular card game UNO R © from the viewpoint of algorithmic combinatorial game theory. We define simple and concise mathematical models for the game, including both cooperative and uncooperative versions, and analyze their computational complexity. In particular, we prove that even a single-player version of UNO is NP-complete, although some restricted cases are in P...

The key objective of this paper is to investigate a new biometric identifier for forensic and civilian applications. We propose a novel biometric authentication system based on low resolution finger nail plate images. Despite the uniqueness and high stability of the nail plate, its usage as a biometric identifier has not been extensively investigated for personal authentication. This paper impl...

Pincer nail deformity is characterized by excessive curvature and distortion of the nail in the transverse dimension, and particularly at the distal part of the nail plate. This deformity leads to pinching off and loss of soft tissue in the affected digit, causing severe pain. Many treatment methods have been proposed; however, an effective long-term method preserving the nail matrix has not ye...

There are different nail manifestations of systemic diseases. This case represents Mees' lines. In the current report, this phenomenon was caused by chemotherapy agents used for treatment of leukemia. It was caused by medication insult to the nail matrix. Nonblanching and impalpable nail bands, migration with the nail growth, and thumb involvement differentiate Mees' from Beau's and Muehrcke's ...

An 8-year old boy with polyarthritis and nail involvement is presented in this report. Nail involvement in Reiter's syndrome is a rare condition that may include painless erythematous nduration of the base of the nail fold; subungual parakeratotic scaling and thickening opacification, ridging of the nail plate.