Algebraic approach to the Hulthen potential

In this paper the energy eigenvalues and the corresponding eigenfunctions are calculated for Hulthen potential. Then we obtain the ladder operators and show that these operators satisfy SU(2) commutation relation.Comment: 8 Pages, 1 Tabl

Strategic exploitation by higher-status people incurs harsher third-party punishment

It is widely documented that third parties punish norm violations, even at a substantial cost to themselves. However, little is known about how third-party punishment occurs in groups consisting of members who differ in status. Having a higher-status member promotes norm enforcement and group efficiency but also poses threats to collective goods when they strategically exploit people’s trust to maximize self-interest. Two preregistered studies consistently revealed a punitive mechanism contingent on target status and strategic exploitation. Third-party observers generated harsher punishment when high- but not low-status targets transgressed after publicly endorsing cooperation (Study 1) or procedural fairness (Study 2). The findings elucidate third-party punishment as a feasible mechanism to counteract exploitation and maintain social norms in interactions with status asymmetry

Calculating Hypocrites Effect: Moral judgments of word-deed contradictory transgressions depend on targets' competence

People often say one thing while doing another, and are therefore criticized as hypocrites. Despite the widespread criticism of hypocrites, relatively less is known about factors that influence moral judgment of hypocrisy. In particular, why are some word-deed inconsistencies condemned more harshly than others? The current research focuses on word-deed inconsistency as a common manifestation of hypocrisy, and examines targets' competence as one important factor that influences moral judgment of hypocrisy. We propose and test a Calculating Hypocrites Effect that people perceive hypocrites as less moral than non-hypocrites (i.e., who transgress with vs. without inconsistent claims), particularly when the targets are high rather than low on competence. Across four studies where competence was either measured (Study 1) or manipulated as expertise (Study 2), occupational status (Study 3) and skills (Study 4), we found support for the presumed Calculating Hypocrites Effect. When the targets were high (vs. low) on competence, people interpreted their misaligned words with deeds as more intentional (Study 2) and self-interested (Study 4), which in turn accounted for their severity of moral judgment. Moreover, the Calculating Hypocrites Effect applied even when the targets were competent in domains unrelated to their hypocritical deeds (Study 3). We conclude that perception of competence is an important factor that determines when, and for whom, hypocrisy incurs moral outrage

Culture, status, and hypocrisy: High-status people who don't practice what they preach are viewed as worse in the United States than China

Status holders across societies often take moral initiatives to navigate group practices toward collective goods; however, little is known about how different societies (e.g., the United States vs. China) evaluate high- (vs. low-) status holders’ transgressions of preached morals. Two preregistered studies (total N = 1,374) examined how status information (occupational rank in Study 1 and social prestige in Study 2) influences moral judgments of norm violations, as a function of word–deed contradiction and cultural independence/interdependence. Both studies revealed that high- (vs. low-) status targets’ word–deed contradictions (vs. noncontradictions) were condemned more harshly in the United States but not China. Mediation analyses suggested that Americans attributed more, but Chinese attributed less, selfish motives to higher status targets’ word–deed contradictions. Cultural in(ter)dependence influences not only whom to confer status as norm enforcers but also whom to (not) blame as norm violators

Bias in the journal impact factor

The ISI journal impact factor (JIF) is based on a sample that may represent half the whole-of-life citations to some journals, but a small fraction (<10%) of the citations accruing to other journals. This disproportionate sampling means that the JIF provides a misleading indication of the true impact of journals, biased in favour of journals that have a rapid rather than a prolonged impact. Many journals exhibit a consistent pattern of citation accrual from year to year, so it may be possible to adjust the JIF to provide a more reliable indication of a journal's impact.Comment: 9 pages, 8 figures; one reference correcte

SESAM and TXL Results for Wilson Action--A Status Report

Results from two studies of full QCD with two flavours of dynamical Wilson fermions are presented. At beta=5.6, the region 0.83 > m_pi/m_rho > 0.56 at m_pia > 0.23 L^{-1} is explored. The SESAM collaboration has generated ensembles of about 200 statistically independent configurations on a 16^3 x 32-lattice at three different kappa-values and is entering the final phase of data analysis. The TXL simulation on a 24^3 x 40-lattice at two kappa-values has reached half statistics and data analysis has started recently, hence most results presented here are preliminary. The focus of this report is fourfold: we demonstrate that algorithmic improvements like fast Krylov solvers and parallel preconditioning recently introduced can be put into practise in full QCD simulations, we present encouraging observations as to the critical dynamics of the Hybrid Monte Carlo algorithm in the approach to the chiral limit, we mention signal improvements of noisy estimator techniques for disconnected diagrams to the pi-N sigma term, and we report on SESAM's results for light hadron spectrum, light quark masses, and heavy quarkonia.Comment: 24 pages, tex + postscript figures, to appear in Proceedings of Int. Workshop "Lattice QCD on Parallel Computers", University of Tsukuba, Japa

Nonequilibrium Steady States and Fano-Kondo Resonances in an AB Ring with a Quantum Dot

Electron transport through a strongly correlated quantum dot (QD) embedded in an Aharonov-Bohm (AB) ring is investigated with the aid of the finite-U slave-boson mean-field (SBMF) approach extended to nonequilibrium regime. A nonequilibrium steady state (NESS) of the mean-field Hamiltonian is constructed with the aid of the C*-algebraic approach for studying infinitely extended systems. In the linear response regime, the Fano-Kondo resonances and AB oscillations of the conductance obtained from the SBMF approach are in good agreement with those from the numerical renormalization group technique (NRG) by Hofstetter et al. by using twice larger Coulomb interaction. At zero temperature and finite bias voltage, the resonance peaks of the differential conductance tend to split into two. At low bias voltage, the split of the asymmetric resonance can be observed as an increase of the conductance plateau. We also found that the differential conductance has zero-bias maximum or minimum depending on the background transmission via direct tunneling between the electrodes.Comment: 24 pages,17 figure

Mass Transfer, Transiting Stream and Magnetopause in Close-in Exoplanetary Systems with Applications to WASP-12

We study mass transfer by Roche lobe overflow in close-in exoplanetary systems. The planet's atmospheric gas passes through the inner Lagrangian point and flows along a narrow stream, accelerating to 100-200\kms velocity before forming an accretion disk. We show that the cylinder-shaped accretion stream can have an area (projected in the plane of the sky) comparable to that of the planet and a significant optical depth to spectral line absorption. Such a "transiting cylinder" may produce an earlier ingress of the planet transit, as suggested by recent HST observations of the WASP-12 system. The asymmetric disk produced by the accretion stream may also lead to time-dependent obscuration of the star light and apparent earlier ingress. We also consider the interaction of the stellar wind with the planetary magnetosphere. Since the wind speed is subsonic/sub-Alfvenic and comparable to the orbital velocity of the planet, the head of the magnetopause lies eastward relative to the substellar line (the line joining the planet and the star). The gas around the magnetopause may, if sufficiently compressed, give rise to asymmetric ingress/egress during the planet transit, although more works are needed to evaluate this possibility.Comment: 6 pages with 2 figures. Accepted in ApJ. Small changes (add discussion on asymmetric disks

Localizing the Common Action Among a Few Videos

This paper strives to localize the temporal extent of an action in a long untrimmed video. Where existing work leverages many examples with their start, their ending, and/or the class of the action during training time, we propose few-shot common action localization. The start and end of an action in a long untrimmed video is determined based on just a hand-full of trimmed video examples containing the same action, without knowing their common class label. To address this task, we introduce a new 3D convolutional network architecture able to align representations from the support videos with the relevant query video segments. The network contains: (\textit{i}) a mutual enhancement module to simultaneously complement the representation of the few trimmed support videos and the untrimmed query video; (\textit{ii}) a progressive alignment module that iteratively fuses the support videos into the query branch; and (\textit{iii}) a pairwise matching module to weigh the importance of different support videos. Evaluation of few-shot common action localization in untrimmed videos containing a single or multiple action instances demonstrates the effectiveness and general applicability of our proposal.Comment: ECCV 202

A unified approach to combinatorial key predistribution schemes for sensor networks

There have been numerous recent proposals for key predistribution schemes for wireless sensor networks based on various types of combinatorial structures such as designs and codes. Many of these schemes have very similar properties and are analysed in a similar manner. We seek to provide a unified framework to study these kinds of schemes. To do so, we define a new, general class of designs, termed “partially balanced t-designs”, that is sufficiently general that it encompasses almost all of the designs that have been proposed for combinatorial key predistribution schemes. However, this new class of designs still has sufficient structure that we are able to derive general formulas for the metrics of the resulting key predistribution schemes. These metrics can be evaluated for a particular scheme simply by substituting appropriate parameters of the underlying combinatorial structure into our general formulas. We also compare various classes of schemes based on different designs, and point out that some existing proposed schemes are in fact identical, even though their descriptions may seem different. We believe that our general framework should facilitate the analysis of proposals for combinatorial key predistribution schemes and their comparison with existing schemes, and also allow researchers to easily evaluate which scheme or schemes present the best combination of performance metrics for a given application scenario