First and second cohomologies of grading-restricted vertex algebras

Let $V$ be a grading-restricted vertex algebra and $W$ a $V$-module. We show that for any $m\in \mathbb{Z}_{+}$, the first cohomology $H^{1}_{m}(V, W)$ of $V$ with coefficients in $W$ introduced by the author is linearly isomorphic to the space of derivations from $V$ to $W$. In particular, $H^{1}_{m}(V, W)$ for $m\in \mathbb{N}$ are equal (and can be denoted using the same notation $H^{1}(V, W)$). We also show that the second cohomology $H^{2}_{\frac{1}{2}}(V, W)$ of $V$ with coefficients in $W$ introduced by the author corresponds bijectively to the set of equivalence classes of square-zero extensions of $V$ by $W$. In the case that $W=V$, we show that the second cohomology $H^{2}_{\frac{1}{2}}(V, V)$ corresponds bijectively to the set of equivalence classes of first order deformations of $V$.Comment: 24 pages. Final version to appear in Communications in Mathematical Physic

Retracted: Effect of Paris polyphylla extract on seconddegree burns in rats

This article previously published in Volume 15 Issue 10 of this journal in October 2016 has beenretracted in line with the guidelines from the Committee on Publication Ethics (COPE,http://publicationethics.org/resources/guidelines)Retracted: Ma Z, Yin W, Hu G, Zhu Z, Huang Z. Effect of Paris polyphylla extract on second-degree burns in rats. Trop J Pharm Res 2016; 15(10):2131-2135 doi: http://dx.doi.org/10.4314/tjpr.v15i10.11From the EditorOur attention was drawn to the falsification of the data published in this article which was confirmed.The corresponding author, Zhi-jian Huang, failed to respond to communication in this respect.26 January 201

The Range of Validity for the Kelvin Force

In a recent Letter, Luo, Du and Huang reported a novel convective instability driven by a force rarely studied before -- that exerted by an external magnetic field on a strongly magnetizable liquid. The associated physics is surprisingly rich and promises many more interesting results for the future. Unfortunately, the analysis starts from a misconception and employs the Kelvin force outside its range of validity. Since few would recognize this as a mistake, and since its consequence in the given experiment is particularly direct and critical, this is a point well worth being clarified, and clearly understood.Comment: 1 pag

Huang Zongxi: Making it Safe Not to be Servile

Integrity is often conceived as a heroic ideal: the person of integrity sticks to what they believe is right, regardless of the consequences. In this article, I defend a conception of ordinary integrity, for people who either do not desire or are unable to be moral martyrs. Drawing on the writings of seventeenth century thinker Huang Zongxi, I propose refocussing attention away from an abstract ideal of integrity, to instead consider the institutional conditions whereby it is made safe not to be servile

Ups and downs: how wages change over the business cycle

In “Ups and Downs: How Wages Change Over the Business Cycle,” Kevin Huang discusses the shift in the cyclicality of real wages — from countercyclical before World War II to procyclical postwar. He outlines the standard explanation for this change but offers evidence of an alternative explanation: the increased role that intermediate goods play in the production process in the postwar era.Wages ; Business cycles

Regional Economic Development: Current Issues 2010-11

The Sichel Series is codirected by Professors Wei-Chiao Huang and Huizhong Zhou, and is cosponsored by the W. E. Up john Institute for Employment Research, College of Arts and Sciences, and Timothy Light Center for Chinese Studies at the Diether H. Haenicke Institute for Global Education at WMU. It is named for longtime WMU economics professor, Dr. Werner Sichel, who retired in 2004. This series also coincides timely with the founding of Timothy Light Center for Chinese Studies at Western Michigan University

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Two new species of stag beetles (Coleoptera: Lucanidae) from western Yunnan, China

Himaloaesalus gaoligongshanus Huang and Chen, new species (Coleoptera: Lucanidae: Aesalinae) is described from the Gaoligongshan Mts., Yunnan, China. It is the fi fth species of the genus Himaloaesalus Huang and Chen. This new species is similar to the Himalayan species Himaloaesalus himalayicus Kurosawa and H. saburoi Araya et al., from which it is distinguished. The male and female genitalia of all the known species of Himaloaesalus are illustrated. Dorcus yongreni Huang and Chen, new species (Coleoptera: Lucanidae: Lucaninae) is described from Ruili area, Yunnan, China. It belongs to the elegans group (Huang and Chen 2013). This new species is similar to the Indian species Dorcus apatani (Okuda and Maeda), new combination, originally described in Digonophorus Waterhouse. The male genitalia of both species are compared and illustrated