4,558 research outputs found
Systematic description and key to isolants from Atacama Desert, Chile
Isolation and identification of desert soil microorganism from Chil
Deliberation in Mobile Messaging Application: A Case in Hong Kong
Considering the increasing penetration of Internet and mobile technologies, we can foresee that more online debates and political discussions, such as online deliberations, will occur in the future. However, prior research does not illustrate or provide empirical evidence to support steps that that online deliberation should take. To address this gap, we conduct a case study on Project ThunderGo, an online deliberation campaign related to the 2016 Hong Kong Legislative Election. Via analyzing data obtained from their deliberation groups, the relevant news articles, and the election results, we establish a four-stage building, engineering, arriving, and reaching (BEAR) model of online deliberation and provide some practical implications for future deliberation host. The model and implications articulate ICT’s role in addressing complicated and multi-facet social problems
Adaptive homodyne measurement of optical phase
We present an experimental demonstration of the power of real-time feedback
in quantum metrology, confirming a theoretical prediction by Wiseman regarding
the superior performance of an adaptive homodyne technique for single-shot
measurement of optical phase. For phase measurements performed on weak coherent
states with no prior knowledge of the signal phase, we show that the variance
of adaptive homodyne estimation approaches closer to the fundamental quantum
uncertainty limit than any previously demonstrated technique. Our results
underscore the importance of real-time feedback for reaching quantum
performance limits in coherent telecommunication, precision measurement and
information processing.Comment: RevTex4, color PDF figures (separate files), submitted to PR
Developmental Strategies of Proliferating Cryptocurrencies – A Case Study on Solana
Cryptocurrencies have disrupted the financial world and created opportunities for businesses to raise capital. However, not all cryptocurrencies have been successful, and identifying the critical factors for success is essential. Many successful cryptocurrencies have established ecosystems and partnerships with leading companies. The purpose of this article is to explore the strategies for building an ecosystem of cryptocurrencies to promote their development and adoption. By examining successful cases and identifying the associated technological innovations and external partnerships, this study aims to provide empirical evidence and insights into the proliferation of cryptocurrencies
Generalized Supersymmetric Perturbation Theory
Using the basic ingredient of supersymmetry, we develop a simple alternative
approach to perturbation theory in one-dimensional non-relativistic quantum
mechanics. The formulae for the energy shifts and wave functions do not involve
tedious calculations which appear in the available perturbation theories. The
model applicable in the same form to both the ground state and excited bound
states, unlike the recently introduced supersymmetric perturbation technique
which, together with other approaches based on logarithmic perturbation theory,
are involved within the more general framework of the present formalism.Comment: 13 pages article in LaTEX (uses standard article.sty). No Figures.
Sent to Ann. Physics (2004
Determination of the parameters of a Skyrme type effective interaction using the simulated annealing approach
We implement for the first time the simulated annealing method (SAM) to the
problem of searching for the global minimum in the hyper-surface of the
chi-square function which depends on the values of the parameters of a Skyrme
type effective nucleon-nucleon interaction. We undertake a realistic case of
fitting the values of the Skyrme parameters to an extensive set of experimental
data on the ground state properties of many nuclei ranging from normal to
exotic ones. The set of experimental data used in our fitting procedure
includes the radii for the valence and neutron orbits in
the O and Ca nuclei, respectively, and the breathing mode
energies for several nuclei, in addition to the typically used data on binding
energy, charge radii and spin-orbit splitting. We also include in the fit the
critical density and further constrain the values of the Skyrme
parameters by requiring that (i) the quantity ,
directly related to the slope of the symmetry energy , must be positive for
densities up to (ii) the enhancement factor , associated with
the isovector giant dipole resonance, should lie in the range of
and (iii) the Landau parameter is positive at . We
provide simple but consistent schemes to account for the center of mass
corrections to the binding energy and charge radii.Comment: 33 pages, 4 figures, Phys. Rev. C (in press
Systematic description and key to isolants from Little Lake volcanic area, California Progress report
Descriptive charts on bacteria isolated from soils of Little Lake volcanic area in Californi
Investigating Mainstreaming Strategies of Hot Cryptocurrencies-wallet
The proliferation of cryptocurrencies in recent years has prompted the launching of many hot cryptocurrencies-wallets (known as hot crypto-wallet , permanently connected to the Internet) services to facilitate the management of cryptocurrencies assets. However, the dark side of cryptocurrencies, such as possible illegal activities and difficulties of key management, may hinder the broader cryptocurrency adoption. Therefore, some hot crypto-wallet services providers have adopted different measures to mainstream their services. Using a qualitative approach, we identified four mainstreaming strategies of hot crypto-wallet services, which may hint at some practical implications for hot cryptowallet service providers
Logarithmic perturbation theory for quasinormal modes
Logarithmic perturbation theory (LPT) is developed and applied to quasinormal
modes (QNMs) in open systems. QNMs often do not form a complete set, so LPT is
especially convenient because summation over a complete set of unperturbed
states is not required. Attention is paid to potentials with exponential tails,
and the example of a Poschl-Teller potential is briefly discussed. A numerical
method is developed that handles the exponentially large wavefunctions which
appear in dealing with QNMs.Comment: 24 pages, 4 Postscript figures, uses ioplppt.sty and epsfig.st
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