1,969 research outputs found
Nano-Sim: A Step Wise Equivalent Conductance based Statistical Simulator for Nanotechnology Circuit Design
New nanotechnology based devices are replacing CMOS devices to overcome CMOS
technology's scaling limitations. However, many such devices exhibit
non-monotonic I-V characteristics and uncertain properties which lead to the
negative differential resistance (NDR) problem and the chaotic performance.
This paper proposes a new circuit simulation approach that can effectively
simulate nanotechnology devices with uncertain input sources and negative
differential resistance (NDR) problem. The experimental results show a 20-30
times speedup comparing with existing simulators.Comment: Submitted on behalf of EDAA (http://www.edaa.com/
AN OPERATIONAL APPROACH FOR EVALUATING INVESTMENT RISK: AN APPLICATION TO THE NO-TILL TRANSITION
Royâs safety-first rule is used to provide measures popular with farmers of short and long term business risk associated with various no-till transition strategies over an investment horizon. The short run rule provided more sensitivity to inter-year financial risk than other commonly used criteria. Results revealed that speed of adoption influenced the probability of successful transition more than did the sequence of drill acquisition methods. Higher equity and larger farms had a greater chance of transition success. Slow acreage expansion with a custom or rental drill reduces risk until a no-till yield penalty is eliminated.Investment risk, Monte Carlo simulation, no-till, rent- purchase, risk, safety-first, technology adoption, transition strategy
An Innovative Approach for Modeling Crop Yield Response to Fertilizer Nutrients
Fertilizer recommendations seldom account for agro-climatic conditions, which are important factors that determine the response to fertilizer and the optimal rate of fertilizer. The nitrogen fertilizer response to open pollinated and hybrid canola types will also impact optimal nitrogen rates. This study used quantile regression to model canola yield response to nitrogen fertilizer. Quantile regression can apply different weights to the residuals, facilitating a response estimation where the agro-climatic conditions are not limiting and the yield response is due to the variable of interest. The economically optimal levels of fertilizers were calculated using the proposed and the conventional least squares procedures of the two canola types in western Canada. Results showed that the effects of nitrogen fertilizer on yield depended on the canola type and on the estimation procedure. Optimal levels of nitrogen for open-pollinated canola were estimated as 91, 115, and 134 kg ha-1 for severe, moderate and low levels of agro-climatic constraints. Hybrid had a higher yield potential, and also required more nitrogen fertilizer (137, 142, and 158 kg ha-1). Unlike conventional approach, proposed approach could benefit producer by recommending less (more) fertilizer when the crop response to fertilizer is expected to be low (high) due to agro-climatic conditions.Crop Production/Industries,
Cosmological Constraints from Hubble Parameter versus Redshift Data
We use the Simon, Verde, & Jimenez (2005) determination of the redshift
dependence of the Hubble parameter to constrain cosmological parameters in
three dark energy cosmological models. We consider the standard CDM
model, the XCDM parameterization of the dark energy equation of state, and a
slowly rolling dark energy scalar field with an inverse power-law potential.
The constraints are restrictive, consistent with those derived from Type Ia
supernova redshift-magnitude data, and complement those from galaxy cluster gas
mass fraction versus redshift data.Comment: Minor changes, including an estimate for H_0. ApJL, in pres
Distribution of antibody titer against Salmonella enterica among healthy individuals in nepal
Theoretical studies on structural and decay properties of superheavy nuclei
In this manuscript, we analyze the structural properties of
superheavy nuclei in the mass range of 284 A 375 within the
framework of deformed relativistic mean field theory (RMF) and calculate the
binding energy, radii, quadrupole deformation parameter, separation energies
and density profile. Further, a competition between possible decay modes such
as decay, decay and spontaneous fission (SF) of the isotopic
chain of superheavy nuclei under study is systematically analyzed
within self-consistent relativistic mean field model. Moreover, our analysis
confirmed that decay is restricted within the mass range 284 A
296 and thus being the dominant decay channel in this mass range.
However, for the mass range 297 A 375 the nuclei are unable to
survive fission and hence SF is the principal mode of decay for these isotopes.
There is no possibility of decay for the considered isotopic chain. In
addition, we forecasted the mode of decay 119 as one chain
from 119 and 119, two consistent chains from
119 and 119, three consistent chains from 119
and 119, four consistent alpha chains from 119, six consistent
alpha chains from 119. Also from our analysis we inferred that for
the isotopes Bh both decay and SF are equally
competent and can decay via either of these two modes. Thus, such studies can
be of great significance to the experimentalists in very near future for
synthesizing superheavy nuclei.Comment: 14 pages, 6 figures. arXiv admin note: text overlap with
arXiv:1611.00232, arXiv:1704.0315
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