7,903 research outputs found
Sustainable Growth and Ethics: a Study of Business Ethics in Vietnam Between Business Students and Working Adults
Sustainable growth is not only the ultimate goal of business corporations but also the primary target of local governments as well as regional and global economies. One of the cornerstones of sustainable growth is ethics. An ethical organizational culture provides support to achieve sustainable growth. Ethical leaders and employees have great potential for positive influence on decisions and behaviors that lead to sustainability. Ethical behavior, therefore, is expected of everyone in the modern workplace. As a result, companies devote many resources and training programs to make sure their employees live according to the high ethical standards. This study provides an analysis of Vietnamese business students’ level of ethical maturity based on gender, education, work experience, and ethics training. The results of data from 260 business students compared with 704 working adults in Vietnam demonstrate that students have a significantly higher level of ethical maturity. Furthermore, gender and work experience are significant factors in ethical maturity. While more educated respondents and those who had completed an ethics course did have a higher level of ethical maturity, the results were not statistically significant. Analysis of the results along with suggestions and implications are provided
Formation of regular spatial patterns in ratio-dependent predator-prey model driven by spatial colored-noise
Results are reported concerning the formation of spatial patterns in the
two-species ratio-dependent predator-prey model driven by spatial
colored-noise. The results show that there is a critical value with respect to
the intensity of spatial noise for this system when the parameters are in the
Turing space, above which the regular spatial patterns appear in two
dimensions, but under which there are not regular spatial patterns produced. In
particular, we investigate in two-dimensional space the formation of regular
spatial patterns with the spatial noise added in the side and the center of the
simulation domain, respectively.Comment: 4 pages and 3 figure
Mesoscopic circuits with charge discreteness:quantum transmission lines
We propose a quantum Hamiltonian for a transmission line with charge
discreteness. The periodic line is composed of an inductance and a capacitance
per cell. In every cell the charge operator satisfies a nonlinear equation of
motion because of the discreteness of the charge. In the basis of one-energy
per site, the spectrum can be calculated explicitly. We consider briefly the
incorporation of electrical resistance in the line.Comment: 11 pages. 0 figures. Will be published in Phys.Rev.
Quantum Critical Dynamics of A Qubit Coupled to An Isotropic Lipkin-Meshkov-Glick Bath
We explore a dynamic signature of quantum phase transition (QPT) in an
isotropic Lipkin-Meshkov-Glick (LMG) model by studying the time evolution of a
central qubit coupled to it. We evaluate exactly the time-dependent purity,
which can be used to measure quantum coherence, of the central qubit. It is
found that distinctly different behaviors of the purity as a function of the
parameter reveal clearly the QPT point in the system. It is also clarified that
the present model is equivalent to an anti Jaynes-Cummings model under certain
conditions.Comment: 8 pages, 4 figure
Critical dynamics of decoherence
We study decoherence induced by a dynamic environment undergoing a quantum
phase transition. Environment's susceptibility to perturbations - and,
consequently, efficiency of decoherence - is amplified near a critical point.
Over and above this near-critical susceptibility increase, we show that
decoherence is dramatically enhanced by non-equilibrium critical dynamics of
the environment. We derive a simple expression relating decoherence to the
universal critical exponents exhibiting deep connections with the theory of
topological defect creation in non-equilibrium phase transitions.Comment: 8 pages; version accepted in PR
Quantum theory for mesoscopic electric circuits
A quantum theory for mesoscopic electric circuits in accord with the
discreteness of electric charges is proposed. On the basis of the theory,
Schr\"{o}dinger equation for the quantum LC-design and L-design is solved
exactly. The uncertainty relation for electric charge and current is obtained
and a minimum uncertainty state is solved. By introducing a gauge field, a
formula for persistent current arising from magnetic flux is obtained from a
new point of view.Comment: revtex, no figure
The Dynamics of Credit Spreads in Hotel Mortgages and Signaling Implications
We use a vector autoregression framework to investigate loan pricing in a market with short-term leases (hotels) relative to longer-term leases (office properties), studying how news on the economy and capital markets are incorporated into the relative pricing of risk. We examine the impact of economic variables on the incremental risk premium and establish its informational content. Relative loan prices reflect systematic risk: an improvement in the general economy, an increase in forward looking corporate profitability, an increase in capital availability, and an increase in industry demand forecast a decline in the risk premium differential. We then examine how loan pricing adjusts to expected delinquencies. The spreads themselves contain important economic information and can help forecast delinquencies. Lenders are forward-looking in the pricing of risk and appear to set interest rates in anticipation of future delinquencies
Quantum signature scheme with single photons
Quantum digital signature combines quantum theory with classical digital
signature. The main goal of this field is to take advantage of quantum effects
to provide unconditionally secure signature. We present a quantum signature
scheme with message recovery without using entangle effect. The most important
property of the proposed scheme is that it is not necessary for the scheme to
use Greenberger-Horne-Zeilinger states. The present scheme utilizes single
photons to achieve the aim of signature and verification. The security of the
scheme relies on the quantum one-time pad and quantum key distribution. The
efficiency analysis shows that the proposed scheme is an efficient scheme
Non-minimal Einstein-Yang-Mills-Higgs theory: Associated, color and color-acoustic metrics for the Wu-Yang monopole model
We discuss a non-minimal Einstein-Yang-Mills-Higgs model with uniaxial
anisotropy in the group space associated with the Higgs field. We apply this
theory to the problem of propagation of color and color-acoustic waves in the
gravitational background related to the non-minimal regular Wu-Yang monopole.Comment: 14 pages, no figure
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