in recent years, many researchers have been done in the area of wireless sensornetworks that has led to the variety of algorithms and methods for the collection andtransmission of environment information; but still many challenges faced bywireless sensor networks using methodologies are applied in various fields. such asmedia access control that due to the media being shared on these networks, ...

We consider the task of designing a truthful auction mechanism for CPU time scheduling problem. There are m commodities (time slots) T = {t1, t2, . . . , tm} for n buyers I = {1, 2, . . . , n}. Each buyer requires a number of time slots si for its task. The valuation function of buyer i for a bundle of time slots Ti is vi(Ti) = wi(m− t), where t is the last time slot in Ti and |Ti| = si. The ut...

Due to the lasting growth in air traffic, many international airports have reached their capacity limits. Access major is granted through assignment of airport time slots. Current practices allocating these slots via grandfathering are widely regarded as inefficient by experts. New market mechanisms need take into account synergistic valuations airlines for departure and arrival slots, well fin...

in order to increase the efficiency of the conveyance of the granular solids, a new experimental set-up is designed. the test rig has longitudinal trapezoidal slots in its conveying pipes. through experimentation, a correlation for friction factor in terms of solid mass flow rate, fluid flow rate and froude number is presented. it is shown that the mixture friction factor for pipes with inner t...

Recently standardized wireless systems have multiple Time-Slots in a radio frame, but existing MUMIMO schedulers are not utilizing multiple Time-Slots efficiently. In this paper we propose a sub-optimal user grouping algorithm utilizing multiple Time-Slots efficiently. The proposed algorithm disperses highly-correlated users in different Time-Slots to prevent severe degradation of spatial multi...

The main contribution of this work is to propose energy-eecient randomized initialization protocols for ad-hoc radio networks (ARN, for short). First, we show that if the number n of stations is known beforehand, the single-channel ARN can be initialized by a protocol that terminates, with high probability, in O(n) time slots with no station being awake for more than O(log n) time slots. We the...

In order to increase the efficiency of the conveyance of the granular solids, a new experimental set-up is designed. The test rig has longitudinal trapezoidal slots in its conveying pipes. Through experimentation, a correlation for friction factor in terms of solid mass flow rate, fluid flow rate and Froude number is presented. It is shown that the mixture friction factor for pipes with inn...

This paper studies the enhanced efficiency of the field strength coupled into slots by using the finite difference time domain method. The coupled field strength with the different slots shape, size, and polarization direction is assisted, some useful rules are concluded. The easiest to form enhanced efficiency of field strength is rectangular slots, square slots are the second, and the most di...

In e-commerce, customers are usually offered a menu of home delivery time windows which they need to select exactly one, even though at least some may be more flexible. To exploit the flexibility such customers, we propose introduce flexible slots, defined as any combination regular (not necessarily adjacent). selecting slot (out set that form product), customer agrees informed only shortly pri...