T Violation in Baryonic B Decays

We study $T$ violation in the three-body charmless baryonic decay of \bar B^0 \ra \Lambda \bar p \pi^+ through the $T$-odd triple product correlation in the standard model. We find that the $T$ violating asymmetry is 10%, which is accessible to the current B factories at KEK and SLAC, while the CP violating one 1.1%. We emphasize that this triple product correlation would be the first measurable direct $T$ violating effect predicted in the standard model.Comment: 4 pages, 1 table, parallel talk given at International Conference on QCD and Hadronic Physics, Beijing, China, 16-20 Jun 200

Chinese cultural values and entrepreneurship

The paper sets out to explore the link between Chinese cultural values and entrepreneurship. A list of Chinese cultural values (CCVs), first developed by the Chinese Cultural Connection, has been fully reexamined and amended. This list is then compared with entrepreneurial attributes defined by Western researchers in order to find links between the two. Although some entrepreneurial attributes are found to coincide with CCVs, it is concluded that the key attributes are either missing in, or conflicting with CCVs

Charmed Ωc\Omega_c weak decays into Ω\Omega in the light-front quark model

More than ten $\Omega_c^0$ weak decay modes have been measured with the branching fractions relative to that of $\Omega^0_c\to\Omega^-\pi^+$. In order to extract the absolute branching fractions, the study of $\Omega^0_c\to\Omega^-\pi^+$ is needed. In this work, we predict ${\cal B}_\pi\equiv {\cal B}(\Omega_c^0\to\Omega^-\pi^+)=(5.1\pm 0.7)\times 10^{-3}$ with the $\Omega_c^0\to\Omega^-$ transition form factors calculated in the light-front quark model. We also predict ${\cal B}_\rho\equiv {\cal B}(\Omega_c^0\to\Omega^-\rho^+)=(14.4\pm 0.4)\times 10^{-3}$ and ${\cal B}_e\equiv{\cal B}(\Omega_c^0\to\Omega^-e^+\nu_e)=(5.4\pm 0.2)\times 10^{-3}$. The previous values for ${\cal B}_\rho/{\cal B}_\pi$ have been found to deviate from the most recent observation. Nonetheless, our ${\cal B}_\rho/{\cal B}_\pi=2.8\pm 0.4$ is able to alleviate the deviation. Moreover, we obtain ${\cal B}_e/{\cal B}_\pi=1.1\pm 0.2$, which is consistent with the current data.Comment: 12 pages, 2 figure

Buyer and seller power in grocery retailing: evidence from Italy

This work investigates the effect of upstream and downstream mar- ket concentration on retailers’ price-cost margins using bimonthly data over the period 1989–1992 disaggregated by retailer type and product. In addition to horizontal concentration, differentiation, and cost factors, the analysis includes buyer power amongst the determinants of retailers’ profitability, as a result of vertical bargaining. Using a fixed effects model in first differences we find evidence of bargaining activity between large chains and food manufacturers. Our analysis of price competition at the retail level also reveals some interde- pendence in the pricing decisions of the largest retail organisations and price leadership by large independent shops. ******************************************************************************************************************* Este trabajo investiga los efectos de la concentración de mercado upstream y downstream sobre el margen precio-costo de los minoristas usando datos bimestrales durante el período 1989–1992 desagregados por tipo de minorista y producto. Adicionalmente a la concentración horizontal, la diferenciación y los factores de costo, el análisis incluye el poder del comprador entre los determinantes de la rentabilidad de los minoristas, como resultado de la negociación vertical. Usando un modelo de efectos fijos en primeras diferencias, encontramos evidencia de actividad de negociación entre las grandes cadenas y los productores de alimentos. Nuestro análisis de la competencia de precios al nivel minorista también revela una cierta interdependencia en las decisiones de fijación de precios de las organizaciones minoristas m´as grandes y liderazgo en precios por parte de las grandes tiendas independientes.price-cost margins, vertical bargaining, price competition, Italiangrocery trade, panel data

Book Review: Teaching Interreligious Encounters

Book review of Teaching Interreligious Encounters. Edited by Marc A. Pugliese and Alexander Y. Hwang. Oxford: Oxford University Press, 2017, 368 pages

A classification of chinese culture

This paper presents a classification of Chinese Cultural Values (CCVs). Although there exist great differences between the Mainland China, Hong Kong and Taiwan, it is still possible to identify certain core cultural values that are shared by the Chinese people no matter where they live. Based on the original list by the Chinese Cultural Connection (1987), the paper creates a new list that contains 71 core values against 40 in the old. The implications and limitations of the classification are also discussed

Genetic diversity in three morphological types of Astragalus membranaceus (Fisch.) Bge. var.mongholicus (Bge.) Hsiao as revealed by inter simple

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POST-TENSIONED BOX GIRDER BRIDGE An Analysis Approach using Equivalent Loads

Continuous-span, cast-in-place box girders have been popular in modern bridge construction. Secondary moments due to prestressing in continuous-span, post-tensioned girders, however, have significantly complicated the structural analysis and design of the girders. The equivalent load method is a commonly used method in the analysis of continuous-span, post-tensioned concrete girders since the method reduces the analysis of a prestressed structure to that of a nonprestressed structure in which the consideration of secondary moments is not required. The basic concept of the equivalent load method is that the effects of prestressing are replaced by equivalent loads produced by the prestressed tendon along the span of the structure. The approximate equivalent load method significantly simplifies the procedure for the computation of equivalent loads for post-tensioned concrete girders with parabolic tendons and therefore has commonly been used by structural engineers. In this paper, three examples of simply-supported, posttensioned concrete girders with various combinations of locations of the centroid of tendons (c.g.s.) and the centroid of concrete (c.g.c.) are demonstrated to verify the accuracy of the approximate equivalent load method. Finally, an example of the analysis of a bridge composed of a continuous-span, post-tensioned concrete box girder superstructure and a concrete pier is also demonstrated using the approximate equivalent load method. Inconstant cross sections (inconstant c.g.c, lines) near the pier of the bridge are considered in this example