Category: A

A stage of an infection in which the infectious agent, such as HIV, is present but there are few or no symptoms of the infection.  

A set of directions that will help you reach your goal.  

Karvonen equation is used to determine the target heart rate (THR) for exercise. It takes into account the current fitness level of the exerciser by using his or her resting heart rate. (Karvonen was a Finnish researcher.) The formula is THR = MAX HR – RHR x IF + RHR.  

A self-generating or self-induced relaxation technique. This method uses mental concentration exercises to bring about sensations of warmth and heaviness in the limbs and torso and then uses relaxing images (e.g., clouds drifting by) to expand the relaxed state.  

The fourth stage in the transtheoretical model of behavior change. In this stage, individuals are overtly changing their behaviors; taking conscious action; and using strategies to resist temptations, remain motivated, and cope with everyday challenges.  

A German glacial meteorologist who was an early proponent of the theory of Continental Drift. In 1912, he first pro¬ posed the theory that the continents had once been united into one single land mass the super continent Pangaea. In 1915 he published Die Entstehung der Kontinente und Ozeane (The Origin of Continents and Oceans)…

British naturalist who developed a theory of evolution by means of natural selection at the same time as Charles Darwin. Wallace, who did most of his work with insects in the Amazon and the Malay Archipelago, concluded that bio¬ logical evolution must be governed by a mechanism that closely resembled the theory proposed by the…

Site of the most renowned battle in ancient literature. To classical readers of Homer, llios, Ilium, or Troy the focus of the poet’s Iliad was a real place, still part of the ancient world 7,000 years after its fall. Herodotus the historian asked Egyptian priests for sources that might supplement Homers account. Thucydides, historian of…

A professor of engineering science at Oxford University who used his professional descriptive and analytical skills to examine the hundreds of prehistoric stone circles in England and Scotland. He later extended his surveys to include the many ancient megalithic sites in Brittany. Thom carefully mapped the positions of the stones in more than a hundred…

An Estonian who joined Adolf Hitler in Munich in 1919 and became editor of the party newspaper, Volkischer Beobachter, and a leading ideologist of the Nazi movement. In 1934, he published The Myth of the Twentieth Century in support of Nazi Racism. The use of “myth” in his title is not intended to disparage; on…