A 60-minute session for Columbia faculty and graduate student instructors. Do you grade large classes or manage multiple graders? Do you need to offer feedback on handwritten student work? Join us for ...

Data through December 2025 are used for computing the means. last modified 2026/01/14, now with GHCN v4 and ERSST v5.) Comparison of temperature of a few years in ...

What makes Brazilian Jiu-Jitsu different? Simply put, the vast majority of aggressive physical encounters end up on the ground. With its heavy emphasis on escape, positional control, and ...

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1978. The Digital Equipment Corporation VT100 was the first ANSI X3.64 compliant terminal and featured lots of innovations including control by an Intel 8085 microprocessor (rather than custom ...

Page last updated July 23 2020 (added Fermín Travi's adaptation of Alan Lee's Python scripts for response-specific meta-d' analysis) The original version of this webpage is archived here. MATLAB files ...

The IBM Type 602-A Calculating Punch (1948); photo from the IBM 602-A Principles of Operation. In the first half of the 20th Century, IBM's flagship product was the Tabulator, which is pretty much ...

Central River Division (formally MacCarthy Island Division) with an area of 3038 sq. km is the largest Local Government Area in the Gambia. The division consists of 10 districts including MacCarthy ...

Vacuum Tube Memory IBM pluggable units from the IBM 701 Defense Calculator, 1952: Vacuum-tube computer memory 1952; Photo: [4].

Columbia's Herman Hollerith pioneered punch card computation beginning in the late 1880s, when he chose punched cards as the medium for encoding and storing demographic data for the 1890 US Census, ...

Jagdish Bhagwati is University Professor (Economics, Law, and International Affairs) at Columbia University and Director of the Raj Center on Indian Economic Policies. He was Senior Fellow for ...

Early-to-mid 1960s. Foreground: IBM 2311 Disk Storage Drives, providing random direct access to 7.25 million 8-bit bytes per removeable disk pack. In Packed Decimal Mode the capacity is 14.5 numeric ...