188 Abstract-The lifetime of battery operated wireless sensor networks can be prolonged by energy aware maintenance of the virtual backbone. The energy of a node is depleted quickly during communication and network failure is most likely to occur when the energy of a Minimum Connected Dominating Set (MCDS) node is exhausted. The reconstruction of an alternate backbone without the depleted node ...

Recently, flood damage has become a social problem owing to unexperienced weather conditions arising from climate change. An immediate response heavy rain is important for the mitigation of economic losses and also rapid recovery. Spatiotemporal precipitation forecasts may enhance accuracy dam inflow prediction, more than 6 h forward mitigation. However, ordinary ConvLSTM limitation predictable...

The availability of low-cost network interface cards (NICs) has made the IEEE 802.11 medium access control (MAC) protocol the de facto MAC standard for wireless mobile ad-hoc networks. Although the IEEE 802.11 MAC protocol is designed to have stations share a single channel in a network, many of the IEEE 802.11 physical (PHY) layer standards define multiple channels and allow the simultaneous, ...

This paper presents a method to evaluate a distance function in semi-infinite programming (SIP) framework for optimization-based, whole-body humanoid motion planning. In our approach, the distance between pairs of robot’s link and obstacles is evaluated along the joint’s trajectory within successive time intervals. In these intervals, we compute a minimum of the continuous distance (MCD) to avo...

Ad hoc wireless network is featured by dynamic topology. There is no fixed infrastructure as compared with wired network. Every host can move to any direction at any speed. This characteristic puts special challenges in routing protocol design. Most existing well-known routing protocols use flooding for route construction. But, flooding suffers from the notorious broadcast storm problem which c...

AIMS The aim of this study was to identify physical and mental health and lifestyle predictors of transition from normal cognition to mild cognitive disorder (MCD). METHODS A total of 2,082 individuals, aged 60-64 years, were assessed at 2 time-points 4 years apart for mild cognitive impairment (MCI) and other MCDs. RESULTS The main predictors of conversion to MCI and to other mild cognitiv...

Connected dominating set is widely used in wireless ad-hoc and sensor networks as a routing and topology control backbone to improve the performance and increase the lifetime of the network. Most of the distributed algorithms for approximating connected dominating set are based on constructing maximal independent set. The performance of such algorithms highly depends on the relation between the...

Given a graph G = (V, E), a dominating set D is a subset of V such that any vertex not in D is adjacent to at least one vertex in D. Efficient algorithms for computing the minimum connected dominating set (MCDS) are essential for solving many practical problems, such as finding a minimum size backbone in ad hoc networks. Wireless ad hoc networks appear in a wide variety of applications, includi...

This paper reports on a study of the effects of Twitter-enabled mobile communication devices on group decision-making and group dynamics. One hundred and sixty-seven university students formed 44 groups under two distinct communication conditions: Twitter operating on mobile communication devices (TMCD), and Google Groups online message boards (OMB) accessed through personal computers. Each gro...