As the school-aged English language learner (ELL) population continues to grow in theUnited States and other English-speaking countries, psychometrically sound instruments to measure their language learning strategies (LLS) become ever more critical. This study adapted and validated an adult-oriented measure of LLS (50-item Strategy Inventory for Language Learning [SILL]; Oxford, 1990) for scho...

Stilling basins are designed to reduce the high kinetic energy of supercritical flow in a downstream spillway. The USBR II stilling basin is distinguished by chute blocks fixed at upstream end and dented sill end, allowing for effective dissipation excess energy. This research investigates effect chute-block geometry on hydraulic performance basin. Six modified chute-blocks with identical dimen...

Abstract The energy and momentum balance of an abyssal overflow across a major sill in the Samoan Passage is estimated from two highly resolved towed sections, set 16 months apart, results two-dimensional numerical simulation. Driven by density anomaly sill, flow relatively steady. system gains divergence horizontal pressure work flux available potential . Approximately half these are transferr...

Forced hydraulic jump in a horizontal stilling basin with one and two continuous sills at the downstream end of an ogee standard weir was investigated. Experiments were completed on sills of five different heights which were fixed at two different distances from the toe of the weir. The main characteristics of the jump such as the sequent depth ratio, relative roller &#10length, and relative en...

Keith Sill is a senior economist in the Research Department of the Philadelphia Fed. Our economy has become increasingly global. We import and export more than ever before. Yet, three facts about international financial transactions, when taken together, pose a puzzle. First, financial capital moves freely across country borders, at least in the case of the developed countries. Returns on simil...