52,479 research outputs found
estimate and neutrino electromagnetic properties from low-energy solar data
We report new values of weak-mixing angle ()
neutrino effective magnetic moment and the charge radius using the
lowest-energy (to-date) solar neutrino data of pp, Be and pep spectra
from phase-I and phase-II runs of Borexino experiment. The best-fit values are
0.2350.019 with a precision comparable to that of
the combined reactor and accelerator very short-baseline experiments and at 90% C.L. with a factor of 3
improvement than the previous bounds. This leads to the improvement of all the
related magnetic moment matrix elements for the Majorana-type and Dirac-type in
mass basis and also improvement on bounds on the flavor magnetic moment states.
The bounds on the neutrino charged radii turn out to be cm cmand cm
cm at 90% C.L..Comment: 5 pages, 2 figures, 2 tables, Solar flux and oscillation parameter
uncertainties in predictions were included. Statistical model modified.
Slight changes occured in numerical results, Published in JPhy
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Towards a UK local government reform Act of 2015: improving public sector performance for 2025
This paper proposes a three tiered governance structure to rebalance local government within the United Kingdom. The introduction of a North of England assembly is proposed to rebalance the North / South divide. An international comparison of U.K. Australian and Canadian public sectors suggests that the U.K lags behind in competitiveness and wellbeing. Calling for equality for all citizens, the paper concludes that a shift in central government policy formulation is needed to enable equitable localisation of political power and improved global competitiveness of the U.K
TSEP: Threshold-sensitive Stable Election Protocol for WSNs
Wireless Sensor Networks (WSNs) are expected to find wide applicability and
increasing deployment in near future. In this paper, we propose a new protocol,
Threshold Sensitive Stable Election Protocol (TSEP), which is reactive protocol
using three levels of heterogeneity. Reactive networks, as opposed to proactive
networks, respond immediately to changes in relevant parameters of interest. We
evaluate performance of our protocol for a simple temperature sensing
application and compare results of protocol with some other protocols LEACH,
DEEC, SEP, ESEP and TEEN. And from simulation results it is observed that
protocol outperforms concerning life time of sensing nodes used.Comment: 10th IEEE International Conference on Frontiers of Information
Technology (FIT 12), 201
HEER: Hybrid Energy Efficient Reactive Protocol for Wireless Sensor Networks
Wireless Sensor Networks (WSNs) consist of numerous sensors which send sensed
data to base station. Energy conservation is an important issue for sensor
nodes as they have limited power.Many routing protocols have been proposed
earlier for energy efficiency of both homogeneous and heterogeneous
environments. We can prolong our stability and network lifetime by reducing our
energy consumption. In this research paper, we propose a protocol designed for
the characteristics of a reactive homogeneous WSNs, HEER (Hybrid Energy
Efficient Reactive) protocol. In HEER, Cluster Head(CH) selection is based on
the ratio of residual energy of node and average energy of network. Moreover,
to conserve more energy, we introduce Hard Threshold (HT) and Soft Threshold
(ST). Finally, simulations show that our protocol has not only prolonged the
network lifetime but also significantly increased stability period.Comment: 2nd IEEE Saudi International Electronics, Communications and
Photonics Conference (SIECPC 13), 2013, Riyadh, Saudi Arabi
Analyzing Delay in Wireless Multi-hop Heterogeneous Body Area Networks
With increase in ageing population, health care market keeps growing. There
is a need for monitoring of health issues. Wireless Body Area Network (WBAN)
consists of wireless sensors attached on or inside human body for monitoring
vital health related problems e.g, Electro Cardiogram (ECG), Electro
Encephalogram (EEG), ElectronyStagmography (ENG) etc. Due to life threatening
situations, timely sending of data is essential. For data to reach health care
center, there must be a proper way of sending data through reliable connection
and with minimum delay. In this paper transmission delay of different paths,
through which data is sent from sensor to health care center over heterogeneous
multi-hop wireless channel is analyzed. Data of medical related diseases is
sent through three different paths. In all three paths, data from sensors first
reaches ZigBee, which is the common link in all three paths. Wireless Local
Area Network (WLAN), Worldwide Interoperability for Microwave Access (WiMAX),
Universal Mobile Telecommunication System (UMTS) are connected with ZigBee.
Each network (WLAN, WiMAX, UMTS) is setup according to environmental
conditions, suitability of device and availability of structure for that
device. Data from these networks is sent to IP-Cloud, which is further
connected to health care center. Delay of data reaching each device is
calculated and represented graphically. Main aim of this paper is to calculate
delay of each link in each path over multi-hop wireless channel.Comment: arXiv admin note: substantial text overlap with arXiv:1208.240
Room-temperature superparamagnetism due to giant magnetic anisotropy in Mo defected single-layer MoS
Room-temperature superparamagnetism due to a large magnetic anisotropy energy
(MAE) of a single atom magnet has always been a prerequisite for nanoscale
magnetic devices. Realization of two dimensional (2D) materials such as
single-layer (SL) MoS, has provided new platforms for exploring magnetic
effects, which is important for both fundamental research and for industrial
applications. Here, we use density functional theory (DFT) to show that the
antisite defect (Mo) in SL MoS is magnetic in nature with a
magnetic moment of of 2 and, remarkably, exhibits an
exceptionally large atomic scale
MAE of 500 meV. Our
calculations reveal that this giant anisotropy is the joint effect of strong
crystal field and significant spin-orbit coupling (SOC). In addition, the
magnetic moment can be tuned between 1 and 3 by varying
the Fermi energy , which can be achieved either by changing
the gate voltage or by chemical doping. We also show that MAE can be raised to
1 eV with n-type doping of the MoS:Mo sample. Our systematic
investigations deepen our understanding of spin-related phenomena in SL
MoS and could provide a route to nanoscale spintronic devices.Comment: 7 pages, 7 figure
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