Iowa Health Focus, February 2005

Monthly newsletter for the Iowa Department of Public Health

Multimarket contact externalities: the effect of rival's multimarket contacts on focal firm performance

Given that firms develop their activities in a network of multiple players, interfirm rivalry is not only a matter of direct competitors, but also of indirect competition. In spite of this, the literature on competitive dynamics tends to focus on analyzing rivalry as an exclusive function of the competitive relationship between a focal firm and its direct rivals. In this article, we extend competitive dynamics literature by considering how focal firms are affected by the relationships of their rivals with third-party firms. Specifically, we study the effect that the multimarket contacts of rivals produces on the performance of the focal firm. Additionally, we incorporate the idea that there are different strategic options for operating in an industry that affect the intensity of multimarket contact externalities. Our results show that multimarket contact among firms causes externalities that indirectly affect firms that are not directly involved in this competitive relationship. We find that multimarket contact externalities differ between and within strategic groups.

Iowa Health Focus, March 2005

Monthly newsletter for the Iowa Department of Public Health

Iowa Health Focus, May 2005

Monthly newsletter for the Iowa Department of Public Health

Iowa Health Focus, April 2005

Monthly newsletter for the Iowa Department of Public Health

Iowa Health Focus, June 2005

Monthly newsletter for the Iowa Department of Public Health

Iowa Health Focus, August 2005

Monthly newsletter for the Iowa Department of Public Health

The future key role of LC-high-resolution-MS analyses in clinical laboratories: a focus on quantification.

For the last decade, high-resolution (HR)-MS has been associated with qualitative analyses while triple quadrupole MS has been associated with routine quantitative analyses. However, a shift of this paradigm is taking place: quantitative and qualitative analyses will be increasingly performed by HR-MS, and it will become the common 'language' for most mass spectrometrists. Most analyses will be performed by full-scan acquisitions recording 'all' ions entering the HR-MS with subsequent construction of narrow-width extracted-ion chromatograms. Ions will be available for absolute quantification, profiling and data mining. In parallel to quantification, metabotyping will be the next step in clinical LC-MS analyses because it should help in personalized medicine. This article is aimed to help analytical chemists who perform targeted quantitative acquisitions with triple quadrupole MS make the transition to quantitative and qualitative analyses using HR-MS. Guidelines for the acceptance criteria of mass accuracy and for the determination of mass extraction windows in quantitative analyses are proposed.

Iowa Health Focus, October 2005

Monthly newsletter for the Iowa Department of Public Health

Iowa Health Focus, November 2005

Monthly newsletter for the Iowa Department of Public Health

Iowa Health Focus, December 2005

Monthly newsletter for the Iowa Department of Public Health

Iowa Health Focus, February 2006

Monthly newsletter for the Iowa Department of Public Health

Iowa Health Focus, September 2005

Monthly newsletter for the Iowa Department of Public Health

Iowa Health Focus, July 2005

Monthly newsletter for the Iowa Department of Public Health