Whether this is the first time you present or you are a seasoned professional, here are some tips for presenting your research at ACS Spring 2026. Need Help? Contacts us for registration, hotel, ...

"Which blockchain are you building on?" It's the question I hear at every tech conference, startup meetup, and investor pitch. As a technology journalist who's covered the blockchain space for over a ...

Overview Python's "abstract base class" system gives you a way to create types that serve as the abstract foundation for another, more concrete type. This example shows how an abstract base class from ...

Abstract classes are classes that cannot be instantiated directly and are meant to be subclassed. They often contain abstract methods, which are methods declared but contain no implementation.

This report examines key changes in the economic status of the American middle class from 1970 to 2023 and its demographic attributes in 2022. The historical analysis is based on U.S. Census Bureau ...

SAN FRANCISCO — In California, a high school teacher complains that students watch Netflix on their phones during class. In Maryland, a chemistry teacher says students use gambling apps to place bets ...

I tried to use AstraDBMemeoryStore as a memory store of sematic kenel. But it says AstraDBMemoryStore is abstract class. TypeError: Can't instantiate abstract class AstraDBMemoryStore with abstract ...

Abstract classes and interfaces in Java serve fundamentally different purposes. Learn the differences between these Java language elements and how to use them in your programs. Abstract classes and ...