in this note we introduce the notion of weak mccoy rings as a generalization of mccoy rings, and investigate their properties. also we show that, if is a semi-commutative ring, then is weak mccoy if and only if is weak mccoy.

Addresses *Howard Hughes Medical Institute and Baylor College of Medicine, One Baylor Plaza MS225, Houston, Texas 77030, USA; e-mail: [email protected] †Laboratory of Genetics, The Salk Institute, 10010 North Torrey Pines Road, La Jolla, California 92037, USA; e-mail: [email protected] ‡Department of Neurology, Washington University School of Medicine, Center for the Study of Nervous System Injur...

Masalah mengukur tekanan biji-bijian dalam belubur telah dianalisa. Kesulitan yang timbul di masamasa yang lepas dikaji sepenuh-penuhnya dan satu percubaan telah dibuat untuk mengurangkan kesulitan ini. Langkah-langkah penting dalam peralatan semasa memasang, dan kesan ke atas keputusan-keputusan telah dinyatakan. Pemeriksaan juga telah dilakukan ke atas belubur model yang telah dipasang dengan...

The bonded resistance strain gage, which is central to the topics treated here, was invented in the late 1930's and is now at about the mid-century mark in its career. During the first fifty years of its existence, the strain gage has been applied to virtually every known load-bearing material – ranging from asphalt to zirconium, and missing few, if any, of the letters in between. Whether the m...

In the United States, several thousand stream gages provide what typically is the only source of continuous, long-term streamflow and channel-geometry information for the locations being monitored. In this paper, the geomorphic content of stream-gage information, previous and potential applications of stream-gage information in fluvial geomorphic research and various possible limitations are de...

Wearable devices and smart sport equipment are being increasingly used in amateur and professional sports. Smart sport equipment employs various sensors for detecting its state and actions. The correct choice of the most appropriate sensor(s) is of paramount importance for efficient and successful operation of sport equipment. When integrated into the sport equipment, ideal sensors are unobstru...