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Author: David K. Oppenheim

Publications

Publication period start: 1964

Publications

Oppenheim, David K. (1964): Certification of algorithm 199: conversions between calendar date and Julian day number. In Communications of the ACM, 7 (11) pp. 661. https://dl.acm.org/doi/10.1145/364984.365083

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New to UX Design? We're Giving You a Free eBook!

The Basics of User Experience Design

Download our free ebook “The Basics of User Experience Design” to learn about core concepts of UX design.

In 9 chapters, we’ll cover: conducting user interviews, design thinking, interaction design, mobile UX design, usability, UX research, and many more!

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316,581 designers enjoy our newsletter—sure you don’t want to receive it?