OBJECTIVE Few studies have examined the association between breast density and breast cancer tumor characteristics. We examined the association between hormonal, proliferative, and histologic tumor characteristics and mammographic breast density in women with breast cancer. METHODS We conducted a cross-sectional analysis in 546 women diagnosed with invasive breast cancer to evaluate the assoc...

In this paper the properties of node-node adjacency matrix in acyclic digraphs are considered. It is shown that topological ordering and node-node adjacency matrix are closely related. In fact, first the one to one correspondence between upper triangularity of node-node adjacency matrix and existence of directed cycles in digraphs is proved and then with this correspondence other properties of ...

Routing is a critical issue in mobile ad hoc networks. The routing algorithm must take into account the specific properties of the network such as its topology, the mobility of the nodes and their number. In this paper, we present a simulation-based study of the performances of our innovative routing protocol named NoDe-TBR (Node Density TBR) that takes into account the actual node density dist...

Low-density parity-check (LDPC) codes have been implemented in latest digital video broadcasting, broadband wireless access (WiMax), and fourth generation of wireless standards. In this paper, we have proposed a high efficient low-density parity-check code (LDPC) decoder architecture for low power applications. This study also considers the design and analysis of check node and variable node un...

In this paper, we analyze the end-to-end routing performance of a wireless sensor network with uncoordinated power management (UPM). In UPM, nodes power on and off with a predetermined duty cycle. We consider the effects of changing the specified duty cycle, spatial node density, and mobility on end-to-end delays, buffering requirements, and the actual, realized energy savings in both stationar...

This paper focuses on the probability density function of the Euclidean distance between node pairs in rectangular random graphs. As the main achievement of the paper, a closed analytic formula of the probability density function of the Euclidean distance between node pairs in rectangular random graphs was obtained basing on combinatorial theory and asymptotic concept. Some lemmas, such as numb...

Wireless sensor networks (WSNs) consist of sensor nodes that onward the sensed data in form of packets within the deployed network. Efficient packet forwarding is a key constraint in sensor networks and many demanding tasks in the network, together with redundancy estimation and sensor node localization depend principally on packet forwarding. Location based forwarding schemes have recently evo...

We report the case of an extremely elderly patient with long-term survival after surgical resection for lung cancer. A 93-year-old man was evaluated for an abnormal density on chest radiography. Chest computed tomography (CT) showed a nodular density of 2.5 × 2.5 cm in the left S4b segment. Lung cancer was diagnosed by bronchoscopy, and left posterolateral thoracotomy and S4 segmentectomy were ...

The correlation energy of the homogeneous three-dimensional interacting electron gas is calculated using the variational and fixed-node diffusion Monte Carlo methods, with trial functions that include backflow and three-body correlations. In the high density regime (rs ≤ 5) the effects of backflow dominate over those due to three-body correlations, but the relative importance of the latter incr...

Devices in future Internet of Things (IoT) will be scavenging energy from the ambiance for all their operations. They face challenges in various aspects of network organization and operation due to the nature of ambient energy sources such as, solar insolation, vibration and motion. In this paper we analyze the classical two-way algorithm for neighbor discovery (ND) in an energy harvesting IoT....