This paper estimates a class of models which satisfy a monotonicity condition on the conditional quantile function of the response variable. This class includes as a special case the monotonic transformation model with the error term satisfying a conditional quantile restriction, thus allowing for very general forms of conditional heteroscedasticity. Furthermore, the monotonicity condition enab...

This article updates Kelly and Bruestle (2011) by illustrating how publication trends in different subject categories in economics evolved from 2007 to 2013. Using data from RePEc we show that the largest increase in the relative share was for articles published in JEL category Q (“Agricultural and Natural Resource Economics, Environmental and Ecological Economics”) over this period. Furthermor...

The journal of economic literature classification scheme is a standard scheme to classify economics paper. This paper exames the usage of the scheme in a large set of economics papers. I document what subjects are central to the work of economics.

Purpose This brief note sheds light on the links between Journal of Economic Literature (JEL) codes and Sustainable Development Goals (SDGs) United Nations. Design/methodology/approach Three alternative methods based keyword overlap to establish SDGs JEL are presented. Findings These simple linkages illustrate that themes have corresponding closely related classification codes. Research limitat...

E. coli FtsZ has no native tryptophan. We showed previously that the mutant FtsZ L68W gave a 2.5-fold increase in trp fluorescence when assembly was induced by GTP. L68 is probably buried in the protofilament interface upon assembly, causing the fluorescence increase. In the present study we introduced trp residues at several other locations and examined them for assembly-induced fluorescence c...

MALDI mass spectrometry imaging (MALDI-MSI) is currently used for clinical applications, such as biomarker identification, particularly for the study of solid tumors. The ability to map specific compounds that have been determined to be biomarkers and therapeutic targets is relevant for the evaluation of the efficacy of targeted therapies. This article describes a new method called Spectro-Immu...