John H. Johnson

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Over the past 3 decades, the U.S. Temporary Help Services (THS) industry grew five times more rapidly than overall employment. Contemporaneously, courts in 46 states adopted exceptions to the common law doctrine of employment at will that limited employers’ discretion to terminate workers and opened them to litigation. This article assesses the contribution(More)
Asthma prevalence rates are at an all-time high in the United States with over 25 million persons diagnosed with asthma. African Americans and other minorities have higher asthma prevalence and higher exposure to environmental factors that worsen asthma as compared to Caucasians. This article describes the evaluation of an inner-city home-based asthma(More)
Let α > 0 and 0 < γ < 1. Define gα,γ : N → N by gα,γ(n) = �αn + γ�. The set {gα,γ(n) : n ∈ N} is called the nonhomogeneous spectrum of α and γ. By extension, we refer to the maps gα,γ as spectra. Bergelson, Hindman, and Kra showed that if A is an IP -set, a central set, an IP ∗set, or a central∗-set, then gα,γ [A] is the corresponding object. We extend this(More)
1 Project Director, Department of Biological Sciences, Michigan Technological University, 1400 Townsend Dr., Houghton, MI 49931-1295 2 Department of Mechanical Engineering, Center for Diesel Research, University of Minnesota, 111 Church St, S.E., Minneapolis, MN 55455 3 Department of Mechanical Engineering and Engineering Mechanics, Michigan Technological(More)
This article examines the organisational structure and strategic plans of the African Telecommunications Union (ATU). Although the ATU has been restructured to include private telecommunications entities as associate members, it remains essentially an inter-governmental agency. The article assesses the benefits of a regional approach to telecommunications(More)
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