One-Loop Matching for Parton Distributions: Non-Singlet Case

We derive one-loop matching condition for non-singlet quark distributions in transverse-momentum cut-off scheme, including unpolarized, helicity and transversity distributions. The matching is between the quasi-distribution defined by static correlation at finite nucleon momentum and the light-cone distribution measurable in experiments. The result is useful for extracting the latter from the former in a lattice QCD calculation.Comment: 10 pages, 1 figur

The Role of Chaos in One-Dimensional Heat Conductivity

We investigate the heat conduction in a quasi 1-D gas model with various degree of chaos. Our calculations indicate that the heat conductivity $\kappa$ is independent of system size when the chaos of the channel is strong enough. The different diffusion behaviors for the cases of chaotic and non-chaotic channels are also studied. The numerical results of divergent exponent $\alpha$ of heat conduction and diffusion exponent $\beta$ are in consistent with the formula $\alpha=2-2/\beta$. We explore the temperature profiles numerically and analytically, which show that the temperature jump is primarily attributed to superdiffusion for both non-chaotic and chaotic cases, and for the latter case of superdiffusion the finite-size affects the value of $\beta$ remarkably.Comment: 6 pages, 7 figure

Increasing and decreasing entanglement characteristics for continuous variables by a local photon subtraction

We investigate how the entanglement characteristics of a non-Gaussian entangled state are increased or decreased by a local photon subtraction operation. The non-Gaussian entangled state is generated by injecting a single-mode non-Gaussian state and a vacuum state into a 50:50 beam splitter. We consider a photon-added coherent state and an odd coherent state as a single-mode non-Gaussian state. In the regime of small amplitude, we show that the performance of quantum teleportation and the second-order Einstein-Podolsky- Rosen-type correlation can both be enhanced, whereas the degree of entanglement decreases, for the output state when a local photon subtraction operation is applied to the non-Gaussian entangled state. The counterintuitive effect is more prominent in the limit of nearly zero amplitude.Comment: Published version, 7 pages, 3 figure

A Study On The Determinants Of Business Stability In Credit Card Firms: Evidence From Korea

This study empirically analyses several factors that affect financial stability such as the profitability of Korean credit card firms, capital adequacy, loan soundness, and liquidity. In particular, internal and external factors found in previous studies were applied to the analysis in order to investigate whether or not those factors had a significant effect on the business stability of Korean credit card firms. The major research findings are as follows. First, the determinant factors for profitability were found to be the degree of enlargement, foreign credibility, and the level of risk management. Second, the determinant factors for capital adequacy were found to be the degree of enlargement, diversification, foreign credibility, the level of management, and the interest rate. Third, the determinant factors for loan soundness were found to be the degree of enlargement and foreign credibility. Lastly, the determinant factors for liquidity were found to be the degree of diversification, foreign credibility, the level of risk management, the degree of competition, economic conditions, and the interest rate. In conclusion, with the recent reduction in the card affiliates’ fees, the leverage regulation, and the credit card debt suppression policy, financial authorities will likely refer to this study as they carefully examine the various influences on the business stability of domestic credit card firms and come up with relevant countermeasures for the continuous growth of those firms

Student interactivity and teacher participation: an application of legitimate peripheral participation in higher education online learning environments

Lave and Wenger’s legitimate peripheral participation is an important aspect of online learning environments. It is common for teachers to scaffold varying levels of online participation in Web 2.0 contexts, such as online discussion forums and blogs. This study argues that legitimate peripheral participation needs to be redefined in response to students’ decentralised multiple interactions and non-linear engagement in hyperlinked learning environments. The study examines students’ levels of participation in online learning through theories of interactivity, distinguishing between five levels of student participation in the context of a first-year university course delivered via a learning management system. The data collection was implemented through two instruments: i) a questionnaire about students’ interactivity perception in the online reflective learning (n = 238) and then ii) an open discussion on the reason for the diverse perceptions of interactivity (n = 34). The study findings indicate that student participants, other than those who were active, need high levels of teacher or moderator intervention, which better enables legitimate peripheral participation to occur in online learning contexts