On Such a Full Sea of Novels: An Interview with Chang-rae Lee

An interview with author Chang-rae Lee

Cytotoxic effects of curcumin in osteosarcoma cells

Carta al editor de International Journal of Nanomedicine, en la que los autores puntualizan ciertos resultados de investigaciones de R. Chang et al.; y de D. K. Walters et al. en relación a sus aplicaciones para la curación de algunos cánceres y enfermedades óseas metabólicas.Letter to the editor of International Journal of Nanomedicine, in which the authors point out certain results of research by R. Chang et al.; and DK Walters et al. in relation to their applications for the cure of some cancers and metabolic bone diseases

On The Panel Unit Root Tests Using Nonlinear Instrumental Variables

This paper re-examines the panel unit root tests proposed by Chang (2002). She establishes asymptotic independence of the t-statistics when integrable functions of lagged dependent variable are used as instruments even if the original series are cross sectionally dependent. She claims that her non-linear instrumental variable (NIV) panel unit root test is valid under general error cross correlations for any N (the cross section dimension) as T (the time dimension of the panel) tends to infinity. These results are largely due to her particular choice of the error correlation matrix which results in weak cross section dependence. Also, the asymptotic independence property of the t- statistics disappears when Chang's modified instruments are used. Using a common factor model with a sizeable degree of cross section correlations, we show that Chang's NIV panel unit root test suffers from gross size distortions, even when N is small relative to T

Calderon multiplicative preconditioner for the PMCHWT equation applied to chiral media

In this contribution, a Calderon preconditioned algorithm for the modeling of scattering of time harmonic electromagnetic waves by a chiral body is introduced. The construction of the PMCHWT in the presence of chiral media is revisited. Since this equation reduces to the classic PMCHWT equation when the chirality parameter tends to zero, it shares its spectral properties. More in particular, it suffers from dense grid breakdown. Based on the work in [1], [2], a regularized version of the PMCHWT equation is introduced. A discretization scheme is described. Finally, the validity and spectral properties are studied numerically. More in particular, it is proven that linear systems arising in the novel scheme can be solved in a small number of iterations, regardless the mesh parameter

Phonetic vs. Phonological Considerations in Inter-Generational Vowel Change in Toronto Heritage Cantonese

Chang et al. (2011) have shown that phonological considerations may override phonetic similarity in influencing the phonetic production of /u/ and /y/ among heritage Mandarin speakers. This study addresses whether or not this generalization holds for another heritage language with a similar contrast corresponding to one vowel category, /u/, in the dominant language (English) by comparing vowel production among GEN 1 (L1 Cantonese) and GEN 2 (English-Cantonese early bilinguals) speakers. The mean F1 and F2 of 30 vowel tokens of /u/ and /y/ from each of 17 speakers from the HerLD (Heritage Language Documentation) Corpus (Nagy 2011) were measured (N=510). Results show maintenance of the Cantonese /y/ ~ /u/ contrast and lack of assimilation of Cantonese /u/ to the relatively high F2 of Toronto English /u/. These results support Chang et al’s (2011) claim that early bilingualism favors maintenance of cross-linguistic and language internal phonological distinctions in both languages

Comments on "State equation for the three-dimensional system of 'collapsing' hard spheres"

A recent paper [I. Klebanov et al. \emph{Mod. Phys. Lett. B} \textbf{22} (2008) 3153; arXiv:0712.0433] claims that the exact solution of the Percus-Yevick (PY) integral equation for a system of hard spheres plus a step potential is obtained. The aim of this paper is to show that Klebanov et al.'s result is incompatible with the PY equation since it violates two known cases: the low-density limit and the hard-sphere limit.Comment: 4 pages; v2: title chang

USA v. Chang

USDC for the District of New Jerse