An Ehresmann connection on a fiber bundle pi: E --> M is defined by prescribing a suitable horizontal subbundle H of the tangent bundle piT: TE --> E. For a horizontal bundle to be suitable, it must have a property called ...

We present an approach to the problem of the blow up at the triple junction of three uids in equilibrium. Although many of our results can already be found in the literature, our approach is almost self-contained and uses ...

Agriophyllum squarrosum (L.) Moq. (Chenopodiaceae), a pioneer species of natural succession in semi-arid regions of China, is widely used for vegetation rehabilitation by air seeding. Experiments were conducted to determine ...

Risk reduction interventions that promote condom use, a vital component of most HIV prevention interventions, have been successful in increasing condom use among African American adolescents. Understanding theoretical ...

The United States Supreme Court was at the center of criticism in the 1960s. Unpopular Court decisions, such as expanding the rights of the criminally accused, brought the Court a lot of attention. The Court is the most ...

African American midwife; her role as birth attendant in various regions in the South.

Global change drivers (GCDs) are expected to alter community structure and consequently, the services that ecosystems provide. Yet, few experimental investigations have examined effects of GCDs on plant community structure ...

A basic strategy used when designing programs for students with exceptionalities is to provide them with appropriate challenges. Much attention is paid to challenges in the areas of mathematics and logic, music or sport. ...