نتایج جستجو برای: directional path

تعداد نتایج: 173450  

2012
Neng-Sheng Pai Hung-Hui Hsieh Yi-Chung Lai

The paper demonstrates a following robot with omni-directional wheels, which is able to take action to avoid obstacles. The robot design is based on both fuzzy and extension theory. Fuzzy theory was applied to tune the PMW signal of the motor revolution, and correct path deviation issues encountered when the robot is moving. Extension theory was used to build a robot obstacle-avoidance model. V...

2007
David Kidston Isabelle Labbé Francis St-Onge Thomas Kunz

Naval at sea (maritime tactical) networks are characterised by a dynamic, heterogeneous, and low-bandwidth environment. There is a critical need for Traffic Engineering (TE) mechanisms to support traffic prioritisation and resource optimisation in this environment. A desirable management service in this environment is end-to-end guaranteed bandwidth for critical application flows. Solutions suc...

2009
Min Chen Victor C. M. Leung Lei Shu Han-Chieh Chao

Multiple disjointed paths have been demonstrated to be effective in delivering multimedia traffic in wireless sensor networks, and improving the network performance in terms of bandwidth aggregation, reliability and network lifetime. In this paper, we investigate the use of directional geographical routing for multipath construction for multimedia data dissemination, and identify the challengin...

2008
Gilbert Siy Ching Mir Ghoraishi Navarat Lertsirisopon Jun-ichi Takada Itoji Sameda Ryuji Soma Hironori Sakamoto Tetsuro Imai

Inside tunnels, the possibility of over-reach of radiated power from the Dedicated Short Range Communications (DSRC) service zone to the out-of-service zone is high, since the waves are confined in the tunnel space. To inspect this more carefully, wideband directional channel measurements were conducted inside an arched transportation tunnel, and the gain, angle-of-arrival and delay of each pro...

2012
Ba Quan Truong Sourav S. Bhowmick Curtis E. Dyreson

XML query languages use directional path expressions to locate data in an XML data collection. They are tightly coupled to the structure of a data collection, and can fail when evaluated on the same data in a different structure. This paper extends XPath expressions with a new structure-independent, nondirectional axis called the neighborhood axis. Given a pair of context nodes, the neighborhoo...

Journal: :CoRR 2017
C. Umit Bas Rui Wang Seun Sangodoyin Sooyoung Hur Kuyeon Whang Jeongho Park Jianzhong Zhang Andreas F. Molisch

This paper presents results from the (to our knowledge) first dynamic double-directionally resolved measurement campaign at mm-wave frequencies for an outdoor microcellular scenario. The measurements are performed with USC’s realtime channel sounder equipped with phased array antennas that can steer beams electrically in microseconds, allowing directional measurements in dynamic environments. E...

Journal: :Journal of Intelligent and Robotic Systems 2000
Vijayan K. Asari Sanjiv Kumar Irwan M. Kassim

In this paper, design of an autonomous microrobotic endoscopy system is presented. The proposed microrobotic endoscope is a vision-guided device, developed to facilitate navigation inside a human colon. The design of the entire system is divided into three areas viz. design of a microrobotic carrier, path planning and guidance, and an off-board control system. A microrobotic design based on pne...

Journal: :Artif. Intell. 1985
Richard E. Korf

The complexities of various search algorithms are considered in terms of time, space, and cost of solution path. I t is known that breadth-first search requires too much space and depth-first search can use too much time and doesn't always find a cheapest path. A depth-first iteratiw-deepening algorithm is shown to be asymptotically optimal along all three dimensions for exponential pee searche...

Journal: :International Journal of Microwave and Wireless Technologies 2021

Abstract Wireless connectivity has been realized for multiple environments and different frequency bands. However, little research exists about mmWave communication in industrial environments. This paper presents the 60 GHz double-directional radio channel a ship hull Line-of-Sight (LOS) non-Line-of-Sight (NLOS) conditions. We performed measurements using Terragraph sounder at locations fitted ...

Journal: :EURASIP J. Wireless Comm. and Networking 2014
Jiasong Mu

ZigBee provides a simple and reliable solution for the low-cost networks. The ZigBee ad hoc on-demand distance vector (Z-AODV) could use the global shortest path for data transmission by flooding the routing quest when necessary. However, the current routing algorithms cannot fully address the energy consumption issue. In this paper, we propose a directional broadcasting algorithm in routing di...

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