Villoglandular adenocarcinoma (VGA) is a rare subtype of cervical adenocarcinoma with a more favorable prognosis compared to conventional adenocarcinomas. Although the tumors are usually recognized on colposcopic examination due to the mainly exophytic growth pattern, they may be underdiagnosed as benign lesions by cytology because of their minimal cytologic atypia. We report the liquid-based c...

The problem of aggregation is considerable importance in many disciplines. In this paper, a new type of operator called visibility graph averaging (VGA) aggregation operator is proposed. This proposed operator is based on the visibility graph which can convert a time series into a graph. The weights are obtained according to the importance of the data in the visibility graph. Finally, the VGA o...

This paper describes a CMOS single chip IF-band converter (IFC) which is applied in the analog front end circuitry of DVB-T receivers. The proposed IFC is composed of a down-conversion mixer, an automatic gain controller (AGC), and an anti-aliasing filter (AAF). The down-conversion mixer uses a current folded-mirror technique which converts a 36 MHz intermediate frequency (IF) input into a 4.5 ...

A wideband variable gain amplifier (VGA) design is introduced with two different schemes. It is based on a fully differential amplifier with resistive loads, and a Negative Miller Capacitance technique is used to increase the bandwidth of the amplifier. The amplifier consists of three stages, and the gain is varied through the second and third stages, where they are degenerated by a voltage con...

This paper covers a method for capturing documents using a digital camera. A typical cheap VGA digital camera (resolution 640 by 480 pixels) does not have adequate resolution to capture text over a page. By displacing the sensor spatially and taking multiple acquisitions we seek to enhance the resolution. There are many approaches in the literature to multi-frame reconstruction. Our approach di...

En este trabajo se presenta el diseño de un desfasador 5 bits programable digitalmente, para su uso en antenas matriciales híbridas que operan la banda K, destinada a comunicaciones SATCOM. Está compuesto por dos amplificadores ganancia variable (VGA) y combinador potencia.

We have realized a full color 4-inch quarter-VGA amorphous Silicon AM-LCD on 75 μm flexible glass substrates. The overall thickness of the LC cell is <170 μm. With this work we demonstrate that the incorporated ultra-thin glass substrates have suitable properties to be compatible with a standard color AM-LCD process and achieve active matrix backplanes with reliable

A newly developed high-performance multiimager VGA camera array is described. Designed for synchronization, bandwidth, and economy within a videoconferencing application, and demonstrated initially through novel video mosaicking, the system shows promise for accelerating the new field of multi-viewpoint imaging. We describe the camera system’s design, control, performance characteristics, use i...

Case study of an FPGA implementation of a 3D graphics processor. Practical design issues dealing with a PCI-bus based reconfigurable FPGA prototyping board are discussed. PCI drivers and bandwidth issues are discussed. An analog VGA video output is presented as a solution to some of the bandwith issues.