208 research outputs found
Binary Nonlinearization of the Super Akns System Under an Implicit Symmetry Constraint
For the super AKNS system, an implicit symmetry constraint between the
potentials and the eigenfunctions is proposed. After introducing some new
variables to explicitly express potentials, the super AKNS system is decomposed
into two compatible finite-dimensional super systems (x-part and -part).
Furthermore, we show that the obtained super systems are integrable super
Hamiltonian systems in supersymmetry manifold .Comment: 10 pages, 5 figures, to appear in Journal of Physics
Characterizing and Subsetting Big Data Workloads
Big data benchmark suites must include a diversity of data and workloads to
be useful in fairly evaluating big data systems and architectures. However,
using truly comprehensive benchmarks poses great challenges for the
architecture community. First, we need to thoroughly understand the behaviors
of a variety of workloads. Second, our usual simulation-based research methods
become prohibitively expensive for big data. As big data is an emerging field,
more and more software stacks are being proposed to facilitate the development
of big data applications, which aggravates hese challenges. In this paper, we
first use Principle Component Analysis (PCA) to identify the most important
characteristics from 45 metrics to characterize big data workloads from
BigDataBench, a comprehensive big data benchmark suite. Second, we apply a
clustering technique to the principle components obtained from the PCA to
investigate the similarity among big data workloads, and we verify the
importance of including different software stacks for big data benchmarking.
Third, we select seven representative big data workloads by removing redundant
ones and release the BigDataBench simulation version, which is publicly
available from http://prof.ict.ac.cn/BigDataBench/simulatorversion/.Comment: 11 pages, 6 figures, 2014 IEEE International Symposium on Workload
Characterizatio
Two-Component Super AKNS Equations and Their Finite-Dimensional Integrable Super Hamiltonian System
Starting from a matrix Lie superalgebra, two-component super AKNS system is constructed. By making use of monononlinearization technique of Lax pairs, we find that the obtained two-component super AKNS system is a finite-dimensional integrable super Hamiltonian system. And its Lax representation and r-matrix are also given in this paper
Microwave Diagnostics of Ultracold Neutral Plasma
We suggest an approach for using microwave radiation in diagnostics of
ultracold neutral plasma. Microwave scattering from ultracold neutral plasma is
calculated . Simple formulations are get and indicate that the dipole radiation
power of ultracold neutral plasma does not depend on density profile
and when , but on the total electron number
. This method provides the information of and from which we can get
the three body recombination rate of the plasma, which is extremely important
in the researches of ultracold neutral plasma
Evaluating the impact of environmental education on ecologically friendly behavior of university students in pakistan: The roles of environmental responsibility and islamic values
With increasing global environmental problems, considerable evidence now suggests that
environmental education can influence students’ ecologically friendly behavior significantly. Addressing increased environmental problems requires better understanding of the relations between
focused and explicit environmental education, environmental responsibility, and religious values.
The current study examined the relationship between environmental education and ecologically
friendly behavior, utilizing insights from resource conservation theory. The relationship between
the variables mentioned above was examined to determine the mediating effect of environmental
responsibility and the moderating effect of Islamic values. Through a cross-sectional approach,
data were gathered from 413 university students. The data were analyzed using analytical techniques such as “structural equation modeling” and “PROCESS.” The study’s findings support the
predicted conceptual model, indicating that environmental education was positively related to environmentally friendly behavior. Furthermore, environmental responsibility partially mediated the
relationship above, whereas Islamic values positively moderated the relationships between environmental education and ecologically friendly behavior as well as between environmental education and environmental responsibility. These findings emphasize the critical role of environmental education and Islamic values in comprehending the ecological behaviors of Muslim students
A study of the tribological behaviour of TiO2 nano-additive water-based lubricants
A ball-on-disk tribometer was employed to evaluate the lubrication performance and mechanisms of innovative TiO2 nano-additive water-based lubricants. Two experimental methods were applied to determine the optimal mass fraction of TiO2. In the method I, lubricants were added onto the worn disk tracks at a predetermined time interval. In the method II, the disks were immersed in the lubricants continuously during the whole process of tribological tests. The results both indicate that the water-based lubricants can significantly reduce the coefficient of friction (COF). The 0.8 wt% TiO2 lubricant demonstrates excellent tribological properties including the lowest COF and the strongest wear resistance under all lubrication conditions. The lubrication mechanisms are attributed to the rolling and mending effects of the TiO2 nanoparticles
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