Layered multicast was introduced to address the heterogeneity problem of network and receivers in multimedia multicast. With highly increasing interest of mobile communication, the need of extending layered multicast to mobile communications has been increased. However, the conventional layered multicast approaches have not considered host mobility, and a handoff can cause stability and fairnes...

Abstract The current study is related to present a novel neuro-swarming intelligent heuristic for nonlinear second-order Lane–Emden multi-pantograph delay differential (NSO-LE-MPDD) model by applying the approximation proficiency of artificial neural networks (ANNs) and local/global search capabilities particle swarm optimization (PSO) together with efficient/quick interior-point (IP) approach,...

In this paper, we discuss the U-MUSCL reconstruction scheme -- an unstructured-grid extension of Van Leer's kappa-scheme proposed by Burg for edge-based discretization [AIAA Paper 2005-4999]. This technique has been widely used in practical fluid-dynamics solvers but with confusions: e.g., third-order accuracy kappa=1/2 or kappa=1/3. paper clarifies some these can be accurate point-valued solut...

Using an array of photo shots, the concentric mosaic offers a quick way to capture and model a realistic three-dimensional (3-D) environment. We compress the concentric mosaic image array with a 3-D wavelet transform and coding scheme. Our compression algorithm and bitstream syntax are designed to ensure that a local view rendering of the environment requires only a partial bitstream, thereby e...

A lot of decisions are made during boardroom meetings. After a discussion, the head of the board often asks for a quick poll. But what if you cannot join the meeting? So called boardroom voting schemes have been proposed to conduct the poll over the Internet and thereby enabling also those who are not present but available online to participant in the poll. But what if you are not available at ...

Disruption Tolerant Networks (DTNs) are considered to be a successful solution to allow communication between nodes in extreme networking environments. Cooperative caching is one of the best methods of data access in such conditions. One of the major challenges in this scenario is secure and efficient data transfer between nodes. Due to random nature of DTNs, harmful intruders can launch attack...

The article offers a way to unite three recent developments in the field of motor control and coordination: (1) The notion of synergies is introduced based on the principle of motor abundance; (2) The uncontrolled manifold hypothesis is described as offering a computational framework to identify and quantify synergies; and (3) The equilibrium-point hypothesis is described for a single muscle, s...

ZigBee is a standard which is considered to be suitable for wireless sensor networks (WSNs). This paper discusses four research topics in ZigBee-based WSNs. First, we observe that using the ZigBee network formation scheme may lead to some nodes cannot join the network. We model an orphan problem to characterize this phenomenon. Second, based on the observation that convergecast is a fundamental...

The construction of a cyber physical system in a power grid provides more potential control strategies for the power grid. With the rapid employment of intelligent terminal equipment (e.g., smart meters and intelligent appliances) in the environment of a smart grid, abundant dynamic response information could be introduced to support a secure and stable power system. Combining demand response t...

This paper presents a security analysis of the manual override feature of the Nokē smart lock. The Nokē allows its user to operate, monitor and even share his smart lock with others through a smartphone. To counter the risk of being unable to open the lock when the smartphone is unavailable, it provides an override mechanism. Nokē implements this override feature using a quick-click scheme, whe...