The , or the , are the Thirteenth, Fourteenth, and Fifteenth amendments to the United States Constitution, adopted between 1865 and 1870. The amendments were a part of the implementation of the Reconstruction of the American South which occurred after the war.
The Thirteenth Amendment (proposed in 1864 and ratified in 1865) abolished slavery and involuntary servitude, except for those duly convicted of a crime. The Fourteenth Amendment (proposed in 1866 and ratified in 1868) addresses citizenship rights and equal protection of the laws for all persons. The Fifteenth Amendment (proposed in 1869 and ratified in 1870) prohibits discrimination in voting rights of citizens on the basis of "race, color, or previous condition of servitude." Males of all races, regardless of prior enslavement, could vote in some states of the early United States, such as New Jersey, provided that they could meet other requirements, such as property ownership.
These amendments were intended to guarantee the freedom of the former slaves and grant certain civil rights to them and protect the former slaves and all citizens of the United States from discrimination. However, the promise of these amendments was eroded by state laws and federal court decisions throughout the late 19th century. The promise of these amendments was not fully realized until the Supreme Court decision in Brown v. Board of Education in 1954 and laws such as the Civil Rights Act of 1964 and the Voting Rights Act of 1965.
Reconstruction era
The Reconstruction Amendments were adopted between 1865 and 1870, the five years which immediately followed the Civil War. The last time the Constitution had been amended was with the Twelfth Amendment more than 60 years earlier in 1804.
These three amendments were part of a large movement to reconstruct the United States which followed the Civil War. Their proponents believed that they would transform the United States from a country that was (in Abraham Lincoln's words) "half slave and half free" to one in which the constitutionally guaranteed "blessings of liberty" would be extended to the entire populace, including the former slaves and their descendants.
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L'objectif de ce cours est d'introduire les étudiants à la pensée algorithmique, de les familiariser avec les fondamentaux de l'Informatique et de développer une première compétence en programmation (
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 Slaughter-House Cases, 83 U.S. (16 Wall.) 36 (1873), was a landmark U.S. Supreme Court decision consolidating several cases that held that the Privileges or Immunities Clause of the Fourteenth Amendment to the U.S. Constitution only protects the legal rights that are associated with federal U.S. citizenship, not those that pertain to state citizenship. Though the decision in the Slaughter-House Cases minimized the impact of the Privileges or Immunities Clause on state law, the Supreme Court would later incorporate the Bill of Rights to strike down state laws on the basis of other clauses.
The Equal Protection Clause is part of the first section of the Fourteenth Amendment to the United States Constitution. The clause, which took effect in 1868, provides "nor shall any State ... deny to any person within its jurisdiction the equal protection of the laws." It mandates that individuals in similar situations be treated equally by the law. A primary motivation for this clause was to validate the equality provisions contained in the Civil Rights Act of 1866, which guaranteed that all citizens would have the guaranteed right to equal protection by law.
Explores the reconstruction theorem and the sampling conditions for accurate signal reconstruction based on the sampling frequency and signal bandwidth.
The success of the Neural Radiance Fields (NeRF) in novel view synthesis has inspired researchers to propose neural implicit scene reconstruction. However, most existing neural implicit reconstruction methods optimize perscene parameters and therefore lack ...
The topic of this thesis is the development of new algorithmic reconstruction methods for quantitative phase imaging (QPI). In the past decade, advanced QPI has emerged as a valuable tool to study label-free biological samples and uncover their 3D structur ...
EPFL2022
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We test the reconstruction power of a lensless cam- era on a custom dataset. We define a linear inverse problem on the raw image, based on a PSF estimation of the the sensing device and the actual captures. We implement various regularizations to enforce s ...