Clock synchronization is a critical component in wireless sensor networks, as it provides a common time frame to different nodes. It supports functions such as fusing voice and video data from different sensor nodes, time-based channel sharing, and sleep wake-up scheduling, etc. Early studies on clock synchronization for wireless sensor networks mainly focus on protocol design. However, clock s...

Body area sensor networks (BASNs) have implicit stringent power requirements to meet battery life and form factor expectations, especially in long-term medical monitoring applications. The largest power consumer in BASNs is typically the wireless transceiver, so recent research has focused on increasing on-node signal processing to reduce the number of bits for wireless transmission. This shift...

Distributed estimation and processing in networks modeled by graphs have received a great deal of interest recently, due to the benefits of decentralised processing in terms of performance and robustness to communications link failure between nodes of the network. Diffusion-based algorithms have been demonstrated to be among the most effective for distributed signal processing problems, through...

As the cost of hardware of CMOS cameras and microphones is reasonably low, multimedia sensor networks are becoming highly feasible to extract detailed information about the environment. Distributed smart cameras and video sensor networks are examples of some popular applications. However, due to unique properties of multimedia data delivery, we face novel challenges for resource-constrained sen...

Problem statement: For the purpose of supporting application services in the Ubiquitous Sensor Network (USN) environment, efficient processing of stream data that occur in the sensor nodes and relevant utilization technologies are being studied. Approach: The conversion of various sensor stream data that occur in the sensor nodes into sensor data suitable for use in the upper-level application ...

This paper presents a discussion of issues that need to be addressed for processing relational queries in distributed environments where the connectivity is unstable and is changing continuously. Query processing over data across nodes that are collecting information is an example of such an environment. Traditional distributed query processing techniques need to be extended to accommodate new ...

We present a practical approach to routing and anycasting with near-optimum delays taking into account the processing loads at routers and processing elements of a computer network. To accomplish this, the minimum-delay routing problem formulated by Gallager is generalized into the problem of minimum-delay routing with load-balancing to account for processing delays in network nodes (servers an...

Breast cancer is one of the most common malignancies in the world. The most important prognostic factor in this cancer is the stage of the tumor. Detection of lymph nodes with or without malignancy is essential for determining the stage of the tumor and setting a therapeutic plan. There are different methods for isolating lymph nodes in surgical specimens of breast cancer in the pathology ...

Suppose we have a set of sensor nodes spread over a geographical area. Assume that these nodes are able to perform processing as well as sensing and are additionally capable of communicating with each other by means of a wireless network. The sensors may include small video or still cameras, acoustic microphone arrays, passive infrared intrusion (PIR), seismic, or magnetic sensing devices. Exam...

The computational complexity of the multiple-input and multiple-output (MIMO) based least square algorithm is very high it cannot be run on processing-inefficient low-cost platforms. To overcome complexity-related problems, a parallel distributed adaptive signal processing (PDASP) architecture proposed, which framework used to efficiently filtering algorithms having cost. In this paper, communi...