copper matrix composite reinforced by 1wt.% tib2 particles was prepared using in situ reaction of cu-1.4wt.% ti and cu-0.7wt.% b by rapid solidification and subsequent heat treatment for 1-20 hrs at 900ºc. high-resolution transmission electron microscopy (hrtem) characterization showed that primary tib2 particles were formed in liquid copper. heat treatment of as-solidified samples led to the f...

Tiling is a well-known pattern mining technique. Traditionally, it discovers large areas of ones in binary databases or matrices, where an area is defined by a set of rows and a set of columns. In this paper, we introduce the novel problem of ranked tiling, which is concerned with finding interesting areas in ranked data. In this data, each transaction defines a complete ranking of the columns....

I t is almost autumn in Kansas, and the corn continues to grow in some fields. The fall harvest is still a few weeks off. However, the farmers in my area will tell you that what happens now will determine the harvest’s outcome. Physician practices must think in the same way. The ICD-9 updates have been released, making this a good time to review your superbills for needed revisions. Doing this ...

Theoretical analysis and Computer simulations have proven to be cost-effective and powerful tools in scientific studies of materials, particularly at nano-scale where synthesis of nano-structures, interpretation of their observed character and exploration of new structures are not always straight forward. We present here fundamental principles of techniques used today for computational simulati...

UNLABELLED Inner-city youth must overcome many environmental challenges as they strive for success. Their outcome is influenced by the interplay of protective forces and risk factors. OBJECTIVE To learn directly from youth what solutions they believe would most influence their likelihood of achieving a positive future. DESIGN In-school 8th-, 9th-, and 12th-graders in north Philadelphia gene...