Sparse Recovery Optimization in Wireless Sensor Networks with a Sub-Nyquist Sampling Rate.

Compressive sensing (CS) is a new technology in digital signal processing capable of high-resolution capture of physical signals from few measurements, which promises impressive improvements in the field of wireless sensor networks (WSNs). In this work, we extensively investigate the effectiveness of compressive sensing (CS) when real COTSresource-constrained sensor nodes are used for compression, evaluating how the different parameters can affect the energy consumption and the lifetime of the device. Using data from a real dataset, we compare an implementation of CS using dense encoding matrices, where samples are gathered at a Nyquist rate, with the reconstruction of signals sampled at a sub-Nyquist rate.

Sub-sampling framework comparison for low-power data gathering: a comparative analysis.

A key design challenge for successful wireless sensor network (WSN) deployment is a good balance between the collected data resolution and the overall energy consumption. In this paper, we present a WSN solution developed to efficiently satisfy the requirements for long-term monitoring of a historical building. The hardware of the sensor nodes and the network deployment are described and used to collect the data.

[CA 125, CA 19.9, MCA, CEA, 17 beta-estradiol and progesterone in functional and benign cysts and carcinoma of the ovary].

CA 125, CA 19.9, CEA, MCA, E2 and P levels have been assessed in the serum and in the ovarian mass fluid of 216 patients through echo-guided puncture to distinguish between functional, benign and malignant cystic neoplasm. Statistically evaluated data have been assessed through histological diagnosis in 122 cases: cyst fluid markers do not always differentiate ovarian carcinoma from benign cysts, while they have a significant concentration in persistent functional cysts (follicular and luteal) if compared with benign and malignant neoplasms.

[The clinical significance of fetal hydronephrosis of moderate extent].

Twelve fetuses with renal pelvis dilatation < 15 mm have been followed up until a year after birth. Dilatation cleared up in 59% of the cases within the last weeks of pregnancy and in 33% in the first months of life, while was asymptomatically detected in one case only a year after birth. A grade I and II vesico-ureteral reflux was diagnosed in two babies.

Laparoscopically-assisted vaginal hysterectomy.

We report on our initial experience with laparoscopically-assisted vaginal hysterectomy. Seven patients aged 41 to 67 years were successfully treated with this new technique without significant morbidity and with the advantage of early discharge and return to full activity. We discuss the indications, technical details including preparation and positioning, and the shortcomings and problems encountered.