3,993 research outputs found
Benchmarking two-photon absorption with CC3 quadratic response theory, and comparison with density-functional response theory
Optimal embedding of a toroidal mesh in a path
We prove that the dilation of an toroidal mesh in an -vertex path equals , if and , if
Electron mobility in surface- and buried- channel flatband In<sub>0.53</sub>Ga<sub>0.47</sub>As MOSFETs with ALD Al<sub>2</sub>O<sub>3</sub> gate dielectric.
In this paper, we investigate the scaling potential of flatband III-V MOSFETs by comparing the mobility of surface and buried In<sub>0.53</sub>Ga<sub>0.47</sub>As channel devices employing an Atomic Layer Deposited (ALD) Al<sub>2</sub>O<sub>3</sub> gate dielectric and a delta-doped InGaAs/InAlAs/InP heterostructure.
Peak electron mobilities of 4300 cm<sup>2</sup>/V·s and 6600 cm<sup>2</sup>/V·s at a carrier density of 3×1012 cm<sup>-2</sup> for the surface and buried channel structures respectively were determined. In contrast to similarly scaled inversion-channel devices, we find that mobility in surface channel flatband structures does not drop rapidly with electron density, but rather high mobility is maintained up to carrier concentrations around 4x10<sup>12</sup> cm<sup>-2</sup> before slowly dropping to around 2000 cm<sup>2</sup>/V·s at 1x10M<sup>13</sup> cm<sup>-2</sup>. We believe these to be world leading metrics for this material system and an important development in informing the III-V MOSFET device architecture selection process for future low power, highly scaled CM
Ultraviolet relaxation dynamics of aniline, N, N-dimethylaniline and 3,5-dimethylaniline at 250 nm
Binary Replacement Technique for Application Programming Interface Level Simulation
International audienceDesign of complex embedded software requires ingenious solutions to many architectural problems. One such solution that would be a crucial catalyst in designing scalable and customized embedded software, is developed by API (Application Programming Interface) level simulator. The use of API level simulator has been gaining wide acceptance due to its design and verification efficiency by enabling parallel development in multiple software layers. However, there are two major bottlenecks in realizing practical systems: source code modification and recompilation of the target software. The paper proposes a novel simulation technique to resolve these two critical issues. The proposed technique makes it possible to replace any part of the target binary without modifying its source code and recompiling it
On Symmetric Encryption with Distinguishable Decryption Failures
We propose to relax the assumption that decryption failures are indistinguishable in security models for symmetric encryption. Our main purpose is to build models that better reflect the reality of cryptographic implementations, and to surface the security issues that arise from doing so. We systematically explore the consequences of this relaxation, with some surprising consequences for our understanding of this basic cryptographic primitive. Our results should be useful to practitioners who wish to build accurate models of their implementations and then analyse them. They should also be of value to more theoretical cryptographers proposing new encryption schemes, who, in an ideal world, would be compelled by this work to consider the possibility that their schemes might leak more than simple decryption failures
Marketing Lambs - Comparison of Liveweight Method and Carcass Weight and Grade Method
The purpose of this study is to investigate whether the marketing methods for lambs can be improved by selling them on the basis of carcass weights and grades instead of by live weight. The approach taken is to examine whether the present system does an adequate job in reflecting to sellers the actual wholesale values of the carcasses. However, before a recommendation can be made, it will also be necessary to examine whether the carcass weight and grade method is practical. If the cost of the latter method is found to be too high, the benefits from the added accuracy may be more than offset. In this preliminary study the emphasis is placed on the problem of how accurately the system reflects carcass values
Generalized Fractal Kinetics in Complex Systems (Application to Biophysics and Biothechnology)
We derive a universal function for the kinetics of complex systems. This
kinetic function unifies and generalizes previous theoretical attempts to
describe what has been called "fractal kinetic".The concentration evolutionary
equation is formally similar to the relaxation function obtained in the
stochastic theory of relaxation, with two exponents a and n. The first one is
due to memory effects and short-range correlations and the second one finds its
origin in the long-range correlations and geometrical frustrations which give
rise to ageing behavior. These effects can be formally handled by introducing
adequate probability distributions for the rate coefficient. We show that the
distribution of rate coefficients is the consequence of local variations of the
free energy (energy landscape) appearing in the exponent of the Arrhenius
formula. We discuss briefly the relation of the (n,a) kinetic formalism with
the Tsallis theory of nonextensive systems.Comment: 15 pages, 3 figures, submitted to Physica
Consumption-based carbon accounting: does it have a future?
Internationally, allocation of responsibility for reducing greenhouse gas emissions is currently based on the production-based (PB) accounting method, which measures emissions generated in the place where goods and services are produced. However, the growth of emissions embodied in trade has raised the question whether we should switch to, or amalgamate PB accounting, with other accounting approaches. Consumption-based (CB) accounting has so far emerged as the most prominent alternative. This approach accounts for emissions at the point of consumption, attributing all the emissions that occurred in the course of production and distribution to the final consumers of goods and services. This review has a fourfold objective. First, it provides an account of the logic behind attributing responsibility for emissions on the basis of consumption instead of production. Issues of equity and justice, increased emissions coverage, encouragement of cleaner production practices, and political benefits are considered. Second, it discusses the counterarguments, focusing in particular on issues of technical complexity, mitigation effectiveness, and political acceptability. Third, it presents the spectrum of implementation possibilities—ranging from the status quo to more transformative options—and considers the implications for international climate policy that would accrue under various scenarios of adopting CB accounting in practice. Fourth, it looks at how CB accounting may be adjusted to fit with current political realities and it identifies policy mechanisms that could potentially be utilized to directly or indirectly address CB emissions. Such an approach could unlock new opportunities for climate policy innovation and for climate mitigation
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