We consider the Windows Scheduling problem. The problem is a restricted version of Unit-Fractions Bin Packing, and it is also called Inventory Replenishment in the context of Supply Chain. In brief, the problem is to schedule the use of communication channels to clients. Each client ci is characterized by an active cycle and a window wi. During the period of time that any given client ci is act...

A wireless sensor network consists of a large number of sensor nodes which are deployed over an area to perform local computations based on information gathered from the surroundings. Each node in the network consists of a battery, but it is very difficult to change or recharge batteries. So the question is how to enhance the lifetime of the network to such a long time. Therefore, in order to m...

In Energy Constrained Wireless Sensor Network, maximizing network lifetime is an important issue. The challenge is to find out the optimal schedule of duty cycle for nodes while maintaining the sufficient number of active nodes for network coverage. In this paper we propose the Energy Efficient Battery Discharge Rate Based (E 2 BDRDC) Asynchronous Duty Cycling Protocol for WSN which consider th...

We present a new survey for pulsars in the error boxes of the low-latitude EGRET sources 3EG J1027−5817, 3EG J1800−2338 and 3EG J1810−1032. Although all of these sources have been covered by previous pulsar surveys, the recent discovery of the young, energetic pulsar PSR J1410−6132 at 6.7 GHz has shown that pulsars of this type can be hidden from low frequency surveys. Using an observing freque...

Some of the fundamental problems of the gait control of a quadruped walking vehicle are addressed. It is shown that the product of the duty factor and the stride length is equal to the length of the boundary of the reachable area of the leg. Furthermore, the mathematical expression representing the relationship between the stability margin, the stride length and duty factor are also formulated....

This paper formulates a new communication problem for smart LED lighting systems designed for light effect control. It introduces the key requirements imposed on the design of the LED driving sequences, which include multiple access, arbitrary duty cycle and no disturbance caused on the normal illumination function. We propose a class of orthogonal sequences that meets these requirements.

This paper considers the open multi-channel queuing system, which receives irregular homogeneous or heterogeneous applications with an unlimited flow of standby time. The system is regarded as an example of a container terminal, having conditionally functional sections with a certain duty cycle, which receives an irregular, non-uniform flow of vessels with the resultant intensity.

STUDY OBJECTIVES The pattern and distribution of rapid eye movement (REM) sleep changes during development, yet there have been few studies of REM density in children. Although children with obstructive apnea syndrome (OSAS) obstruct primarily during REM sleep, the relationship between REM density and obstructive apnea has not been established for this population. We hypothesized that (i) REM d...

A new model is proposed giving the channel capability of a MB-IR-UWB system versus the number of subband and the duty cycle. The architecture simulated shows data rate ranging from 1,434 Gbits/s to 0.9 Gbits/s for 16 to 10 subbands and duty cycle ranging from 20% to 12%.

Wireless sensor networks, as a key enabling technology of Ubiquitous Computing, have been a booming research topic in the recent years. Upon designing a low-cost wireless sensor device, power consumption is one of the most important issues, because cheap batteries are normally the power suppliers. Since the RF transceiver is one of the biggest power consumers in such a sensor device, enabling t...