Expansion of Information in the Binary Autoencoder With Random Binary Weights.

This letter studies the expansion and preservation of information in a binary autoencoder where the hidden layer is larger than the input. Such expansion is widespread in biological neural networks, as in the olfactory system of a fruit fly or the projection of thalamic inputs to the neocortex. We analyze the threshold model, the kWTA model, and the binary matching pursuit model to find how the sparsity and the dimension of the encoding influence the input reconstruction, similarity preservation, and mutual information across layers.

Feasibility of coronary CT angiography for guidance of CABG.

Objective: To assess the clinical safety and effectiveness of coronary revascularization in patients who underwent coronary artery bypass grafting (CABG) based exclusively on coronary computed tomography angiography (CCTA) results.

Methods: 53 patients (62.3 ± 7.

[Technical aspects of revascularizing transplantation of omentum majus on myocardium, upper extremity and brain].

There was the technique elaborated for the revascularized transplantation of the omentum majus flap on myocardium, upper extremity and brain. There were performed 26 operations of nondirect revascularization of myocardium, 3--of microsurgical transplantation on upper extremity and 3--on the brain.

[The use of greater omentum in revascularization of ischemia-affected organs].

Anatomo--morphological peculiarities of greater omentum (GO) in 63 patients, in whom its flap was applied for revascularization of ischemized tissues of extremities, myocardium and the brain, were studied up. Microsurgical transplantation of the GO free flap was performed in 41 patient, omentocardiopexy without the break of the GO vascular pedicle--in 22. Possibilities of the GO application for the ischemized organs revascularization were estimated.

[A method choice in the myocardial revascularization in the ischemic heart disease on the basis of clinico-angiographic data on patients].

Of 230 patients, examined by coronarography, in 219 the signs of the ischemic heart disease were revealed. The criterions were elaborated for differentiated choice of the myocardial revascularization method.