Paul Dawkins
Paul's Online Notes: Calculus Iii: Partial Derivatives
The resource examines partial derivatives. Topics investigated are limits, higher order partial derivatives, chain rule, and directional derivatives. Class notes, definitions, and examples with detailed solutions are included. The notes...
Math Graphs
Houghton Mifflin: Math Graphs: Direction and Vectors 1 [Pdf]
Students are given the level curve of a function and are asked to sketch the vector showing the greatest rate of increase of the function. The practice exercise is available in PDF format.
Other
Science Direct: New Lower Bounds for the Three Dimensional Finite Bin Packing
This article analyzes the three-dimensional finite bin packing problem (3BP). The 3BP finds many practical applications as it is a simplified version of many real-world problems, e.g. container and pallet loading.
Other
Science Direct: Recent Advances on Two Dimensional Bin Packing Problems
This paper surveys recent advances obtained for the two-dimensional bin packing problem, with special emphasis on exact algorithms and effective heuristic and metaheuristic approaches.
Texas Education Agency
Texas Gateway: Collisions of Point Masses in Two Dimensions
By the end of this section, you will be able to discuss two-dimensional collisions as an extension of one-dimensional analysis, define point masses, derive an expression for conservation of momentum along the x-axis and y-axis, describe...
Countries and Their Cultures
Countries and Their Cultures: Zande
The Zande, whose homelands lie within three modern African states (Republic of the Sudan, Zaire, Central African Republic), constitute a large and complex amalgam of originally distinct ethnic groups, united by culture and, to a...
Countries and Their Cultures
Countries and Their Cultures: Tropical Forest Foragers
The term "tropical-forest foragers," or "pygmies," refers to ethno-linguistically diverse peoples distributed across the forested regions of Central Africa who are particularly short in stature and who traditionally have lived by...
Countries and Their Cultures
Countries and Their Cultures: Zoroastrians
The ethnic identity of this Iranian minority group is derived from their religion, Zoroastrianism. They constitute only 0.18 percent of the Iranian population. The term "Zoroastrian" is taken from the name of their prophet Zarathushtra...
Countries and Their Cultures
Countries and Their Cultures: Somalis
The Muslim Somalis of the Horn of Africa speak the Somali language and live in the Somali Democratic Republic (Somalia). There are also substantial numbers of Somalis in neighboring countries: the southern half of Djibouti, the eastern...
Countries and Their Cultures
Countries and Their Cultures: Herero
The Herero are a Bantu group living today in Namibia and in the Republic of Botswana in southern Africa. The Herero speak a form of southwestern Bantu that is shared most closely by two other major groups. Cattle herding remains the...
Countries and Their Cultures
Countries and Their Cultures: Amhara
Amhara culture is often identified with Abyssinian culture, which is regarded as the heir to the cultural blending of ancient Semitic and Cushitic (African) patterns. "Ethiopia" is derived from an ancient Greek term meaning "people with...
Get It Write
Get It Write: Criteria, Media, and Memorandums
Do you know when to use "criteria" and when to use "criterion?" What about "media" and "medium?" The correct singular and plural usage of these words can cause confusion. This site gives a good explanation of how to use these words...
Other
Saudi Aramco World: Keyboard Calligraphy
In a recent exhibition on Ottoman culture held in Amsterdam's Nieuwe Kerk was an unimpressive-looking little 18th-century book, a printed version of a manuscript produced 150 years earlier. Usually a manuscript is more rare than a...
Curated OER
Etc: Clip Art Etc: General Ambrose Everett Burnside
Ambrose Everett Burnside (1824 - 1881) was an American soldier, railroad executive, inventor, industrialist, and politician from Rhode Island, serving as governor and a U.S. Senator. Burnside was a Union Army general in the Civil War and...