The accurate identification and characterization of lymph nodes by imaging has important therapeutic and prognostic significance in patients with newly diagnosed cancers. The presence of nodal metastases limits the therapeutic options and also generally indicates worse prognosis in patients. Thus, it becomes crucial to have this information before commencing therapy. Current cross-sectional ima...

In wireless sensor networks (WNSs), the research on medium access control (Mac) protocol is one of the hot topic for researcher. And also, the MAC protocol is a determined factor for communication performance. In this paper, we proposed a novel energy efficient MAC protocol to improve the energy effectiveness. Based on the analysis on current existing MAC protocol, our protocol can adjust the d...

network sensors consist of sensor nodes in which every node covers a limited area. the most common use ofthese networks is in unreachable fields.sink is a node that collects data from other nodes.one of the main challenges in these networks is the limitation of nodes battery (power supply). therefore, the use oftopology control is required to decrease power consumption and increase network acce...

Energy efficient dynamic clustering offers a flexible paradigm to reconfigure the network in order to maximise network's lifetime in resource constrained ad hoc sensor networks. The load profiles of parent nodes (PNs) can be used to define its current state as well as to predict potential failures caused by energy loss due to high loads on particular PNs. This paper proposes a novel dynamic clu...

Abstract The Xiangshan Internet of Underwater Things was successfully deployed in September 2022, which is the first multi-node constant current cabled observatory network China. Instead being a real scientific IOT, main motivation this to verify energy conversion technologies applied Things, including multi-module-stack architecture electrical system, digital branch unit, and fast deployable i...

Introduction: In the current study we evaluated the incremental value of lateral pelvic lymphoscintigraphy imaging of endometrial or cervical cancer patients who underwent sentinel node mapping. Methods: Operable endometrial and cervical cancer patients without clinical or paraclinical evidence of lymph node involvement were included in the study. The day before surgery the patients were sent ...

AODV routing protocol is intended for use by mobile nodes in ad-hoc wireless networks. As the degree of node mobility becomes high, however, the number of RREQ and RREP messages during the route discovery process increase so rapidly. The unexpected increases in the number of control packets cause the destination node to decrease the packet receiving rate. Besides, the overall energy consumption...

The MANET is a Mobile Ad-hoc Network. Topology control is an important issue in design of MANETs, due to its nature of the node-mobility. Many solutions are available for topology control in adhoc networks, centralized or distributed algorithms likei.e. GAF, LEACH, AFECA etc. The basic idea for topology maintenance is to elect the leader and all the moving node information is collected by it. T...

In VANETs the trade off between energy efficiency and throughput is one of the main constraints since the medium is time varying wireless channel. In this work we introduce fragmented transmission scheme in to VANETs that improve the energy efficiency pursuing high throughput. In existing systems contention window and back off stage is adapted according to mobility of vehicular node. Along with...

Network wide broadcast is a frequently used operation in ad hoc networks. Developing energy efficient protocols to reduce the overall energy expenditure in network wide broadcast can contribute toward increasing the longevity of ad hoc networks. Most of the existing work in energy efficient broadcast protocols use either a fixed transmission power model or assume global knowledge of the entire ...