Background: Laparoscopic hysterectomy is a well established method, with numerous described variat ions of this technique. The attempt to minimize operati ve ports has led to the descr ipt ion of a “single puncture laparoscopic hysterectomy”. The transumbil ical use of an electromechanical morcellator to faci l itate extraction of the uterus is f irst descr ibed here, in a ser ies of patients h...

Modern communication systems need various hybrids to enable digital data transmit via microwave bands. Thus several types of microwave quadrature hybrids have been reported for the realization of balanced circuits, matched attenuators, and phase shifter. The branch line coupler is one of the most popular hybrids for the convenience of design and implementation. But it offers limited bandwidth a...

The Chimera Methodology is a software engineering paradigm that enables rapid development of real-time applications through use of dynamically reconfigurable and reusable software. It is targeted towards a distributed shared memory computing environment. The primary contribution of this research is the port-based object model of a real-time software component. The model is obtained by applying ...

mechanical, hydraulic, and chemical washing methods are the most common methods for sewer line cleaning. each of these methods includes several sub methods. rodding and bucket machine are the two most important of mechanical cleaning methods, whereas high-speed and flushing are the most important hydraulic cleaning methods. acids, alkalis, surfactants, and enzymes are widely used materials in s...

The aim of this work is to propose a dual band millimeter wave (mmwave) MIMO antenna system for 5G technology. In addition, the arrangement elements in an array should be such manner that without using traditional decoupling structures and/or techniques, reasonable isolation level must achieved. To demonstrate this, consists four radiating are etched on 0.508 mm-thick Rogers-5880 substrate. die...

Cellular standards like the third generation partnership program (3GPP) long term evolution (LTE), ultra-mobile broadband (UMB), high speed downlink packet access (HSDPA) and IEEE 802.16e (WiMAX) support multiple-input multiple-output (MIMO) wireless communication technology. MIMO uses multiple antennas at the transmitter and receiver along with advanced digital signal processing to improve lin...

A new dual stator winding induction machine drive is described in this paper. The proposed induction machine consists of a standard squirrel-cage rotor and a stator with two separate windings wound for a dissimilar number of poles. Each stator winding is fed from an independent variable-frequency variablevoltage inverter. The proposed drive offers such advantages as speed sensor less operation,...

In this paper we present the results of a detailed simulation study of the execution of vector programs on a single processor of a Convex C3480 machine, using a subset of the Perfect Club benchmarks. We are interested in evaluating several cost/performance tradeoos that the machine designers made in order to asses which features of the architecture severely limit the performance attainable. We ...

The design of a compact dual-band dual-port antenna system is presented. It operates in two frequency bands, 790862 MHz and 2500-2690 MHz, thereby making it suitable for Long Term Evolution (LTE) handheld devices. The proposed system is composed of two orthogonal inverted-F antennas (IFA) to perform diversity in mobile terminals. A good agreement is observed between simulated and experimental r...