Wrocław University of Technology

About: Wrocław University of Technology is a education organization based out in Wrocław, Poland. It is known for research contribution in the topics: Laser & Computer science. The organization has 13115 authors who have published 31279 publications receiving 338694 citations.

Computational Methods for Resting-State EEG of Patients With Disorders of Consciousness

Abstract: Patients who survive brain injuries may develop Disorders of Consciousness (DOC) such as Coma, Vegetative State (VS) or Minimally Conscious State (MCS). Unfortunately, the rate of misdiagnosis between VS and MCS due to clinical judgment is high. Therefore, diagnostic decision support systems aiming to correct any differentiation between VS and MCS are essential for the characterization of an adequate treatment and an effective prognosis. In recent decades, there has been a growing interest in the new EEG computational techniques. We have reviewed how resting-state EEG is computationally analyzed to support differential diagnosis between VS and MCS in view of applicability of these methods in clinical practice. The studies available so far have used different techniques and analyses; it is therefore hard to draw general conclusions. Studies using a discriminant analysis with a combination of various factors and reporting a cut-off are among the most interesting ones for a future clinical application.

Recommendation Framework for Online Social Networks

Abstract: The recommendation framework that supports the creation of new interper-sonal relationships within the social networks is presented in the paper. It integrates many sources of data in order to generate the relevant personalized recommendations for network members. The unique social filtering techniques and measures of the activity and strength of relationship are encompassed by the framework.

The elasticity and rigidity of the outer coats of the eye

Abstract: Aims: The aim of this study was to measure the elastic moduli of the cornea and sclera and the rigidity of the eyeball. Methods: Elastic moduli of the cornea and sclera were measured on 22 fresh intact porcine eyes using the relationship between elasticity and changes in pressure and volume applicable to pressure vessel models. Rigidity was determined from the relationship between changes in volume and intraocular pressure (IOP). Induced volume changes were up to 300 ml and within the physiological range of IOP (12-25 mm Hg). IOP readings taken with a transducer were used in calculations. Tonometric values were taken for comparison. Results: For cornea and sclera, the relationship between circumferential stress and volumetric strain (which defines the elastic modulus) was closely approximated to linear (R-2=0.96), but better fitted with a second order polynomial (R-2=1.00). Elastic moduli ranged from 0.05 to 0.24 MPa and 0.15 to 0.83 MPa for the cornea and sclera, respectively. The mean value of ocular rigidity was found to be 0.0024. The effect of increasing IOP on the average corneal radius of curvature was not statistically significant, but it altered the scleral radius of curvature by 0.07 mm/mmHg. Conclusion: The elasticity of the porcine cornea and sclera could be approximated to constant over the physiological range, but showed a tendency to non-linearity. The modulus of elasticity for the sclera is 3 to 3.5 times that of the cornea. The cornea is more resistant than the sclera to IOP changes within the physiological range.