2,430 research outputs found
Before Vietnam: Understanding the Initial Stages of US Involvement in Southeast Asia, 1945-1949
The Vietnam War, widely considered the worst foreign policy debacle in American history, remains the most controversial event of the twentieth century. Much criticism for Vietnam involvement stems from two sources: 1) disapproval with how American leadership conducted the war, and 2) disagreement over the reason for the conflict in the first place. Few historians, if any, dispute the first criticism. The historical community remains divided, however, in terms of a definitive position on the basis or origin for the conflict. For a holistic approach to the origin of the Vietnam War, one must first elucidate the conception of American intervention in the region, including “why” and “how” it arose. Any analysis of American involvement in Vietnam must begin with President Truman and his administration following the conclusion of the Second World War. This can only be accurately accomplished viewed in the context of US foreign policy during the Cold War. The initial American involvement in Southeast Asia in the context of the developing Cold War must be thoroughly examined to more fully understand the origins of the Vietnam War. Considering the increasingly complex situation in Southeast Asia following the Second World War, Truman and his administration acted consistently, bearing in mind the vested interests of the United States, their Allies, and the people of Southeast Asia, in light of the threat of Communist expansion in the region and across the world
Hitler, Anti-Semitism, and the Demise of the Third Reich
Adolf Hitler, the leader of Nazi Germany from 1933 to 1945, is most well-known for two particular political/societal standpoints: German nationalism, and namely, anti-Semitism. Hitler served as the chairman of the Nazi party from 1921 till its questionable rise as the dominant party in pre-war Germany. He then rose to the position of Chancellor, and ultimately, the Fuhrer. Historically, the Nazi Party was known for anti-Marxism (anti-communism), anti-capitalism, anti-democracy, and anti-Semitism. Hitler’s rise to power in the Nazi Party shifted the focus, drawing the party away from many of its foundational tenants. During the Second World War, the “Final Solution” to the Jewish question became the chief focus of the Nazi Party. Its preeminence is demonstrated by Hitler’s allocation of large numbers of militarily valuable men and resources to systematic extermination of Jewish people all over Europe. Two schools of thought, Functionalists and Intentionalists, represent the historical debate on this topic. Intentionalists argue that Hitler was planning the Holocaust even before his political career, whereas functionalists argue that the Nazi Party itself was responsible. This essay will argue that Adolf Hitler took control of the Nazi Party, elevated his own doctrine to the forefront, in effect, using the Nazi organization as a political tool to carry out his personal desires, demonstrated in his relentless pursuit of the “Final Solution.” In short, Hitler’s commitment to the eradication of the Jewish people overshadowed even his military aspirations, hastening the demise of the Third Reich
The Nuremberg Trials: A Troubled Legacy
The Second World War wreaked a measure of destruction unseen in human history. An unprecedented number of people died or were killed during the conflict across the European and Pacific theatres of war. Fighting waged for the better part of a decade, claiming nearly one hundred million lives, soldiers and civilians combined. American, British, and Russian forces finally surrounded Berlin in April 1945. Adolf Hitler, the cunning, vengeful, ideologically-driven leader who plunged the world in war, took a cyanide tablet and shot himself in his underground bunker only a week before Germany finally surrendered. The fighting in Europe finally ended in May 1945, signaling an end to the bloodshed (Japan would surrender in August of the same year). The surrender of Germany, however, did not conclude the work of the Allies in Germany. An equally daunting task now faced the leaders of the free world: the trial of Nazi war criminals. While the Allies conducted numerous war trials in the years following, the most famous remains the Nuremberg Trial, conducted by the International Military Tribunal from November 20, 1945 to October 1, 1946. The trial represented an unprecedented in law and changed the face of international law for all time. Although the trials inevitably allowed many criminals to evade punishment, the circumstances surrounding the trial, its unprecedented nature, and the conviction of major war criminals proved equally important for the legacy of Nuremberg Trials in the years to come
Cosmological gravitomagnetism and Mach's principle
The spin axes of gyroscopes experimentally define local non-rotating frames.
But what physical cause governs the time-evolution of gyroscope axes? We
consider linear perturbations of Friedmann-Robertson-Walker cosmologies with
k=0. We ask: Will cosmological vorticity perturbations exactly drag the spin
axes of gyroscopes relative to the directions of geodesics to quasars in the
asymptotic unperturbed FRW space? Using Cartan's formalism with local
orthonormal bases we cast the laws of linear cosmological gravitomagnetism into
a form showing the close correspondence with the laws of ordinary magnetism.
Our results, valid for any equation of state for cosmological matter, are: 1)
The dragging of a gyroscope axis by rotational perturbations of matter beyond
the Hubble-dot radius from the gyroscope is exponentially suppressed, where dot
is the derivative with respect to cosmic time. 2) If the perturbation of matter
is a homogeneous rotation inside some radius around a gyroscope, then exact
dragging of the gyroscope axis by the rotational perturbation is reached
exponentially fast as the rotation radius grows beyond the H-dot radius. 3) For
the most general linear cosmological perturbations the time-evolution of all
gyroscope spin axes exactly follow a weighted average of the energy currents of
cosmological matter. The weight function is the same as in Ampere's law except
that the inverse square law is replaced by the Yukawa force with the Hubble-dot
cutoff. Our results demonstrate (in first order perturbation theory for FRW
cosmologies with k = 0) the validity of Mach's hypothesis that axes of local
non-rotating frames precisely follow an average of the motion of cosmic matter.Comment: 18 pages, 1 figure. Comments and references adde
Internationalisation des élites académiques suisses au 20ème siècle : convergences et contrastes
A partir d'une base de données originale sur les professeurs de droit et de sciences économiques des universités suisses sur l'ensemble du XXe siècle, cet article rend compte des diverses dynamiques d'internationalisation de ces élites. Trois enseignements majeurs peuvent être tirés de nos analyses. D'abord, d'un point de vue diachronique, il est possible de diviser le XXe siècle en trois phases historiques : une internationalité forte des élites académiques au début du siècle, une nationalisation ou « relocalisation » suite à la Première Guerre mondiale, puis une « ré-internationalisation » à partir des années 1960 et de manière accélérée depuis les années 1980. Ensuite, les professeurs de sciences économiques, en terme de nationalités ou de lieu de formation, sont plus cosmopolites et ont moins d'ancrage local que leurs homologues juristes. Enfin, la prédominance germanique parmi les professeurs des universités suisses au début du siècle, qui s'explique autant par une internationalité d'« excellence » que de « proximité », laisse place, surtout en sciences économiques, à une montée de l'influence des Etats-Unis, révélatrice d'un effritement de l'internationalité de « proximité »
Mach's principle: Exact frame-dragging via gravitomagnetism in perturbed Friedmann-Robertson-Walker universes with
We show that the dragging of the axis directions of local inertial frames by
a weighted average of the energy currents in the universe is exact for all
linear perturbations of any Friedmann-Robertson-Walker (FRW) universe with K =
(+1, -1, 0) and of Einstein's static closed universe. This includes FRW
universes which are arbitrarily close to the Milne Universe, which is empty,
and to the de Sitter universe. Hence the postulate formulated by E. Mach about
the physical cause for the time-evolution of the axis directions of inertial
frames is shown to hold in cosmological General Relativity for linear
perturbations. The time-evolution of axis directions of local inertial frames
(relative to given local fiducial axes) is given experimentally by the
precession angular velocity of gyroscopes, which in turn is given by the
operational definition of the gravitomagnetic field. The gravitomagnetic field
is caused by cosmological energy currents via the momentum constraint. This
equation for cosmological gravitomagnetism is analogous to Ampere's law, but it
holds also for time-dependent situtations. In the solution for an open universe
the 1/r^2-force of Ampere is replaced by a Yukawa force which is of identical
form for FRW backgrounds with The scale of the exponential
cutoff is the H-dot radius, where H is the Hubble rate, and dot is the
derivative with respect to cosmic time. Analogous results hold for energy
currents in a closed FRW universe, K = +1, and in Einstein's closed static
universe.Comment: 23 pages, no figures. Final published version. Additional material in
Secs. I.A, I.J, III, V.H. Additional reference
Nuclear structure of Ac-231
The low-energy structure of 231Ac has been investigated by means of gamma ray
spectroscopy following the beta-decay of 231Ra. Multipolarities of 28
transitions have been established by measuring conversion electrons with a
mini-orange electron spectrometer. The decay scheme of 231Ra --> 231Ac has been
constructed for the first time. The Advanced Time Delayed beta-gamma-gamma(t)
method has been used to measure the half-lives of five levels. The moderately
fast B(E1) transition rates derived suggest that the octupole effects, albeit
weak, are still present in this exotic nucleus
A Quasi-Spherical Gravitational Wave Solution in Kaluza-Klein Theory
An exact solution of the source-free Kaluza-Klein field equations is
presented. It is a 5D generalization of the Robinson-Trautman quasi-spherical
gravitational wave with a cosmological constant. The properties of the 5D
solution are briefly described.Comment: 10 pages Latex, Revtex, submitted to GR
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