The Jim Crow laws were state and local laws introduced in the Southern United States in the late 19th and early 20th centuries that enforced racial segregation, "Jim Crow" being a pejorative term for an African-American. Such laws remained in force until 1965. Formal and informal segregation policies were present in other areas of the United States as well, even if several states outside the South had banned discrimination in public accommodations and voting. Southern laws were enacted by white Southern Democrat-dominated state legislatures to disenfranchise and remove political and economic gains made by African Americans during the Reconstruction era. Such continuing racial segregation was also supported by the successful Lily-White Movement of Southern Republicans.
In practice, Jim Crow laws mandated racial segregation in all public facilities in the states of the former Confederate States of America and in some others, beginning in the 1870s. Jim Crow laws were upheld in 1896 in the case of Plessy vs. Ferguson, in which the Supreme Court laid out its "separate but equal" legal doctrine concerning facilities for African Americans. Moreover, public education had essentially been segregated since its establishment in most of the South after the Civil War in 1861–1865.
Although in theory, the "equal" segregation doctrine was extended to public facilities and transportation too, facilities for African Americans were consistently inferior and underfunded compared to facilities for white Americans; sometimes, there were no facilities for the black community at all. Far from equality, as a body of law, Jim Crow institutionalized economic, educational, political and social disadvantages and second class citizenship for most African Americans living in the United States. After the National Association for the Advancement of Colored People (NAACP) was founded in 1909, it became involved in a sustained public protest and campaigns against the Jim Crow laws, and the so-called "separate but equal" doctrine.
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The first part of the course (~20%) is devoted to green chemistry and life cycle assessment.The remainder focuses on process intensification (fundamentals, detailed description of a few selected te
A freedman or freedwoman is a formerly enslaved person who has been released from slavery, usually by legal means. Historically, slaves were freed by manumission (granted freedom by their owners), emancipation (granted freedom as part of a larger group), or self-purchase. A fugitive slave is a person who escaped enslavement by fleeing. Slavery in ancient Rome and Ancient Roman Freedmen Rome differed from Greek city-states in allowing freed slaves to become plebeian citizens.
The Civil Rights Act of 1964 () is a landmark civil rights and labor law in the United States that outlaws discrimination based on race, color, religion, sex, and national origin. It prohibits unequal application of voter registration requirements, racial segregation in schools and public accommodations, and employment discrimination. The act "remains one of the most significant legislative achievements in American history". Initially, powers given to enforce the act were weak, but these were supplemented during later years.
The National Association for the Advancement of Colored People (NAACP) is a civil rights organization in the United States, formed in 1909 as an interracial endeavor to advance justice for African Americans by a group including W. E. B. Du Bois, Mary White Ovington, Moorfield Storey and Ida B. Wells. Over the years, leaders of the organization have included Thurgood Marshall and Roy Wilkins. Its mission in the 21st century is "to ensure the political, educational, social, and economic equality of rights of all persons and to eliminate race-based discrimination".
Molecular dynamics simulations of displacement cascades in aluminium, aluminium-nickel solid solutions and inhomogeneous samples containing amorphous or crystalline Al3Ni precipitates are performed. It is shown that no segregation occurs inside the displac ...
2005
Dense granular flows -debris or pyroclastic flows, avalanches, granular flows in heaps, silos or rotating drums-are ubiquitous to many natural and industrial processes. Their grain composition is often polydisperse, with particles differing in shape, size ...
EPFL2021
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We study a simple algorithm inspired by the Brazil nut effect for achieving segregation in a swarm of mobile robots. The algorithm lets each robot mimic a particle of a certain size and broadcast this information locally. The motion of each particle is con ...