We consider a general class of two-dimensional passive propagation media, represented as a planar graph where nodes are capacitors connected to a common ground and edges are inductors. Capacitances and inductances are fixed in time but vary in space. Kirchhoff’s laws give the time dynamics of voltage and current in the system. By harmonically forcing input nodes and collecting the resulting ste...

We consider the problem of estimating a network's eigenvector centrality only from data on nodes, with no information about network topology. Leveraging versatility graph filters to model processes, supported nodes is modeled as signal obtained via output filter applied white noise. seek simplify downstream task ranking by bypassing topology inference methods and, instead, inferring structure d...

Wireless sensor networks involve a large number of sensor nodes with limited energy supply, which impacts the behavior of their application. In wireless multimedia sensor networks, sensor nodes are equipped with audio and visual information collection modules. Multimedia contents are ubiquitously retrieved in surveillance applications. To solve the energy problems during target surveillance wit...

The paper calculates the throughput of Carrier Sense Multiple Access (CSMA) assuming that the set of propagation delays among the nodes (the so called “vulnerable times”) are very different and shows that considering the worst case propagation time can be largely pessimistic in assessing the performance of these networks. The application of our analysis is a large ad-hoc wireless network of loc...

In this paper we develop a novel approach to conserving energy in battery powered communication devices. There are two salient aspects to this approach. First, the battery powered devices move through multiple, progressively deeper, sleep states in a predictable manner. Nodes in deeper sleep states consume lower energy while asleep but incur a longer delay and higher energy cost to wake up. Sec...

Localization of unknown nodes in wireless sensor networks, especially for new coming nodes, is an important area and attracts considerable research interests because many applications need to locate the source of incoming measurements as precise as possible. In this paper, in order to estimate the geographic locations of nodes in the wireless sensor networks where most sensors are without an ef...

Binary Decision Diagrams present an efficient way of modeling digital systems for simulation purposes. In order to take into account the need of representing faults directly in BDDs for fault simulation and test generation a special class of BDDs, refered to as structurally synthesized BDDs is used in the paper. It is shown that the efficiency of simulation using SSBDD highly depends on the dis...

BACKGROUND AND OBJECTIVE Excision and histological assessment of the first draining node (sentinel lymph node) is a frequently used method to assess metastatic lymph node involvement related to cutaneous melanoma. Due to the time required for accurate histological assessment, nodal status is not immediately available to the surgeon. Hence, in case histological examination shows metastases, the ...

the notion of strong arcs in a fuzzy graph was introduced bybhutani and rosenfeld in [1] and fuzzy end nodes in the subsequent paper[2] using the concept of strong arcs. in mordeson and yao [7], the notion of“degrees” for concepts fuzzified from graph theory were defined and studied.in this note, we discuss degrees for fuzzy end nodes and study further someproperties of fuzzy end nodes and fuzz...

The need for highly accurate position information is of great importance in many commercial, public safety, and military applications. With the integration of GPS into cell phones, in conjunction with WiFi localization, we are entering a new era of ubiquitous location-awareness. In the coming years, we will see the emergence of high-definition location-awareness applications: localization syste...