Conglomerates are generalized frameworks for informetric research. In this article, the h-index of a conglomerate is defined and it is shown how this construction generalizes the standard definition of the h-index. It is further shown how non-trivial constructions, such as Prathap’s h-indices, fit well into a conglomerate framework. An example illustrates the use of the conglomerate framework.

1. Universidade Federal Fluminense, Niterói (RJ) Brasil. 2. Universidade Federal do Rio de Janeiro, Rio de Janeiro (RJ) Brasil. 3. Santa Casa de Misericórdia de Porto Alegre, Porto Alegre (RS) Brasil. 4. Universidade Federal de Ciências da Saúde de Porto Alegre, Porto Alegre (RS) Brasil. 5. Faculdade de Medicina de Petrópolis, Petrópolis (RJ) Brasil. A 37-year-old man presented with dry cough a...

We estimate continuous-time event-history models of the acquisition of conglomerate vs. non-conglomerate and predatory vs. friendly acquisitions among the 1962 Fortune 500 between January, 1963, and December, 1968. Our analysis of predatory acquisitions reveals that there were strong disciplinary motivations for these acquisitions in the 1960s. Q ratios were, by a large margin, the most importa...

Electrophilic additions of DL- and L-Cys to propenoic acid afforded (RS)- and (R)-2-amino-3-(2-carboxyethylthio)propanoic acids [(RS)- and (R)-ACE], respectively. (RS)-ACE was found to exist as a conglomerate based on its melting point, solubility, and infrared spectrum. (RS)-ACE was optically resolved by preferential crystallization to yield (R)- and (S)-ACE. The obtained (R)- and (S)-ACE were...

This article reviews the conglomerate literature, with a focus on recent papers that have cast strong doubt on the hypothesis that conglomerate firms destroy value on average when compared to similar stand-alone firms. Recent work has shown that investment decisions by conglomerate firms are consistent with value maximization; conglomerate firms trade at an average premium relative to single-se...