Verification of analog circuit specifications is a challenging task requiring expensive test equipment and time consuming procedures. This paper presents a method for low cost parameter verification based on statistical analysis of a digital signature. A CMOS on-chip monitor and sampler circuit generates the digital signature of the CUT. The monitor composes two signals (x(t), y(t)) and divides...

IntroductionA fine balance of image quality and radiation dose can be achieved by optimization to minimize stochastic and deterministic effects. This study aimed in ensuring that images of acceptable quality for common radiographic examinations in digital imaging were produced without causing harmful effects. Materials and MethodsThe study was conducted in three phases. The pre-optimization inv...

Sarah Whiley holds a bachelor’s degree in Electrical Engineering from the University of Cape Town. After completing her MSc in Biomedical Engineering at the same institution, studying anterior-cruciate ligament repair, she spent three years completing a doctorate in the Department of Orthopaedic Engineering at the University of Edinburgh, developing techniques for assessing fracture healing usi...

Rice algorithm, which has been recommended by Consultative Committee for Space Data System (CCSDS) for space telescope image lossless compression, is studied. Due to the similarity, this algorithm is applied on lossless compression of X-ray digital image after improvement and a satisfying compression rate is obtained. Firstly, the algorithm process is presented. Later on, the compression and de...

The E.O. Paton Electric Welding Institute of the NAS of Ukraine together with other organizations of Ukraine develops portable X-ray television equipment capable to perform digital processing of testing results. Radioscopic (on notebook screen) as well as radiographic images in hard copy or other forms can be made using it. Today, flash-memory compatible with any computer became popular carrier...

The Borsuk-Ulam theorem states that a continuous function f : S → R has a point x ∈ S with f(x) = f(−x). We give an analogue of this theorem for digital images, which are modeled as discrete spaces of adjacent pixels equipped with Z-valued functions. In particular, for a concrete two-dimensional rectangular digital image whose pixels all have an assigned “brightness” function, we prove that the...

background evaluation of the craniofacial bones is the oldest method to measure the facial proportion ratio in orthodontics. objectives the purpose of this study was to evaluate the effect of emboss enhancement on the reliability of landmark identification in digital lateral cephalometric images. materials and methods ten digital lateral cephalograms were selected from the archive of an oral an...

An all-digital fractional-N Phase-Locked Loop (PLL) built with standard cells and digital synthesis tools allows easier integration with digital blocks and portability to different processes or technologies. This paper presents a PLL built with standard cells and digital synthesis tools and achieves good jitter performance. It uses an embedded time-to-digital converter (TDC) with multipath to i...

one of the most common and important therapeutic tools used by physicians is prescription. the use of digital systems in the health field has many benefits and significant impacts on the health system. one of these systems is digital prescription. in this article, first, we will review the existing infrastructure and work done in this area, and then with a new perspective on health issues, we w...

We present the kernel implementation of a Mobile Certification Authority (MCA). Our MCA kernel is able to issue digital certificates fully-complying with the X.509v3 standard; it supports either RSA or ECDSA as a public key cryptosystem engine and; it can incorporate biometric-based user identification information (in the form of fingerprint recognition) to the digital certificate. The MCA appl...