We have investigated the earth station errors in two-way time transfer. A 3.7-m earth station and a very small aperture terminal earth station were used in these experiments along with a transponder located on a mountain about 10 km away. The temperature coefficient of the receive delay for the 3.7 m NIST earth station was ( 150 30) ps/K, and the temperature coefficient for the transmit delay w...

In this paper we describe the design and implementation of a control system for automatic vision-based station keeping with an underwater ROV, relative to some visual landmark. First, a region-based tracking system is described that tracks naturally textured landmarks in the image plane, based upon full planar-projective motion models. The implementation of the algorithm is such that it allows ...

The cities of Paris, London, Chicago, and New York (among others) have recently launched large-scale bike-share systems to facilitate the use of bicycles for urban commuting. This paper estimates the relationship between aspects of bike-share system design and ridership. Specifically, we estimate the effects on ridership of station accessibility (how far the commuter must walk to reach a statio...

India is an agricultural country and agriculture is backbone of Indian economy. Agriculture provides the principal means of livelihood for the major Indian population. The optimum use of agriculture resources can lead to a good crop yield. Water resource is major constrain in agriculture so efficient distribution of available water is certainly beneficial to get good crop yield and hence profit...

In this paper we present an emergency monitoring strategy (Predictive Simulation Reporting) using Wireless Sensor Networks that combines sensor monitoring and the prediction of future movement of occupants using a multi-agent crowd evacuation simulation operating on a resource-rich Base Station node. Sensor nodes are informed ahead of time about multiple possible evacuation scenarios that could...

This paper presents the performance analysis of DFIG based off shore wind farm feeding to large power system through a hybrid HVDC link. The hybrid HVDC link consists of a line commutated converter based inverter and voltage source converter based rectifier. The active and reactive power of off shore station is controlled using voltage source converter based rectifier controller and the dc line...