Abstract: Computer-assisted instruction systems have been broadly applied to help students solving math word problems. However, these systems offer little help to students encountering multi-step ...
Abstract: Vector addition systems with states (VASS), also known as Petri nets, are a popular model of concurrent systems. Many problems from many areas reduce to the reachability problem for VASS, ...
Windows 10 and Windows 11 have had their share of problems. According to the Microsoft Security Response Center (MSRC), the operating system experienced 11791 security vulnerabilities throughout 2025 ...
Mathematica needs you! Add, subtract, divide and multiply your way to victory. Meet the Karate Cats and practice spelling, grammar and punctuation as you chop, kick and smash the challenges. Join ...
Both of these words are verbs and nouns and their meanings overlap. This can be confusing to those whose first language is English. It can be baffling to those whose first language is one other than ...
In January 1993, a gunman murdered seven people in a fast-food restaurant in Palatine, a suburb of Chicago. In his dual roles as an administrative executive and spokesperson for the police department, ...
Scientists lost their instruments within Antarctica’s most dangerously unstable glacier, though not before getting a glimpse at the warming waters underneath. By Raymond Zhong The court ruled that ...
Discover more about the many different types of birds found around the world with Cam and Sophie the barn owl from One Zoo Three. What are reptiles? Discover the cold-blooded world of reptiles with ...
Gingivitis is gum inflammation that usually starts when plaque builds up below your gum line, triggering infection. Without treatment, it can progress to periodontitis and tooth loss. Risk factors ...
Gallbladder disease includes inflammation, infection, stones or blockage of the gallbladder. The gallbladder is a sac located under the liver. It stores and concentrates bile produced in the liver.
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