Ion trap transducers for quantum electromechanical oscillators

An enduring challenge for contemporary physics is to experimentally observe and control quantum behavior in macroscopic systems. We show that a single trapped atomic ion could be used to probe the quantum nature of a mesoscopic mechanical oscillator precooled to 4 K, and furthermore, to cool the oscillator with high efficiency to its quantum ground state. The proposed experiment could be performed using currently available technology.

COMENIUS E O DIREITO À EDUCAÇÃO: A VISÃO PIONEIRA A CAMINHO DA UNIVERSALIDADE

Essa dissertação teve a seguinte hipótese de trabalho: Comenius e seu pensamento compõem uma das bases estruturais do direito à educação, como é entendido atualmente . Para discuti-la, buscou-se promover um diálogo entre o pensamento comeniano e a Declaração Mundial Sobre Educação Para Todos de Jomtien, 1990, UNESCO. Jan Amos Comenius, pedagogo e bispo morávio do século XVII, empenhou-se na criação e disseminação de sua proposta pansófica na sociedade, tendo a educação como papel central na renovação da cultura. Pretendeu-se apresentar Comenius como um pioneiro da educação , haja vista sua defesa por uma educação universal em meio a um contexto social desigual em meados dos anos mil e seiscentos, bem como na atualidade, o reconhecimento de seu pioneirismo pela própria UNESCO, considerando-o o antecessor espiritual daquela Organização. O pedagogo buscava uma sistematização do saber em chave pansófica, representada pela tríade omnes, omnia, omnino - ensinar tudo a todos e totalmente. Assim, objetivou-se especificamente: a) conhecer as fases de sua vida, que abarcam suas obras, bases teológicas e pedagógicas e vivências em seu contexto histórico; b) apresentar seu pensamento educacional e c) compreender especificamente sua proposta pansófica, que se liga ao direito à educação. A opção metodológica na análise histórico-documental, inspiração para a pesquisa, foi a História da Longa Duração, fundamentada em Fernand Braudel, Jacques Le Goff, Marc Bloch e Peter Burke. Autores que serviram como referência sobre Comenius são, entre outros: Olivier Cauly, João Luiz Gasparin, Franco Cambi, Frederick Eby, Jean Piaget, Will Monroe, Sérgio Covello, Latourette e Walker. A conclusão deste trabalho filosófico-jurídico apontou para a constatação de convergências entre o pensamento de Comenius e a citada Declaração de Jomtien, demonstrando sua notável presença na construção do conceito de direito à educação como um de seus pilares fundamentais na contemporaneidade. A pesquisa foi edificada sobre um ideal universal, que transcende épocas e encontra-se com o desejo intrinsecamente humano da igualdade através do conhecimento e pretende servir de subsídio e motivação para novos estudos a respeito do pensamento de Comenius relacionado ao direito à educação.

Collaborators Pt. 1

The Florida International University Drama students present a reading of "Collaborators: Elia Kazan, Arthur Miller, and Marilyn Monroe" by Dr Richard Schwartz. This play touches upon events that surrounded the Cold War and the House of Un-American Activities Committee in the 1950s. Event was held at the Black Box at the Wertheim Performing Arts Center on March 31, 2014.

Collaborators Pt. 2

The Florida International University Drama students present a reading of "Collaborators: Elia Kazan, Arthur Miller, and Marilyn Monroe" by Dr Richard Schwartz. This play touches upon events that surrounded the Cold War and the House of Un-American Activities Committee in the 1950s. Event was held at the Black Box at the Wertheim Performing Arts Center on March 31, 2014.

Job satisfaction of dietitians in South Florida

The purpose of this study was to examine job satisfaction of dietitians in South Florida and to identify significant differences in job satisfaction between dietitians working in traditional versus non-traditional settings. A job satisfaction questionnaire was developed, validated, and mailed to dietitians in Palm Beach, Broward, Dade, and Monroe counties. Out of 600 questionnaires mailed, 203 surveys were returned and 187 were valid and analyzed statistically. Seventy three percent of subjects practiced in traditional and 17% in non-traditional settings. Eighteen percent of 187 subjects surveyed reported feeling dissatisfied with their jobs and 59% reported feeling satisfied. There was no significant difference in satisfaction due to practice settings (traditional versus non-traditional). The subjects reported satisfaction with co-workers and supervisors. The two major areas where dissatisfaction was reported were compensation and professional recognition. The results showed that the majority of dietitians in South Florida are, in general, satisfied with their jobs. Although dietitians' salaries have increased by approximately 80% since 1982, compensation was still viewed as inadequate by 48% of the subjects, given dietitians' education, skills and experience. Because legislation to approve reimbursement of medical nutrition therapy is pending, increase in dietitians' knowledge of reimbursement issues is recommended. Dietitians must also promote assertively their valuable contribution to wellness, health, and the treatment of disease.

Rightful Resistance in the Colombian conflict. A theoretical reflection based on a Peace Community

This article considers the opportunities of civilians to peacefully resist violent conflicts or civil wars. The argument developed here is based on a field-based research on the peace community San José de Apartadó in Colombia. The analytical and theoretical framework, which delimits the use of the term ‘resistance’ in this article, builds on the conceptual considerations of Hollander and Einwohner (2004) and on the theoretical concept of ‘rightful resistance’ developed by O’Brien (1996). Beginning with a conflict-analytical classification of the case study, we will describe the long-term socio-historical processes and the organizational experiences of the civilian population, which favoured the emergence of this resistance initiative. The analytical approach to the dimensions and aims of the resistance of this peace community leads to the differentiation of O`Brian’s concept of ‘rightful resistance’.

La música en el desarrollo de la espiritualidad y la religiosidad. Una aproximación al Cristianismo y al Budismo

La música puede afectar al individuo en todos sus niveles –físico, mental y espiritual–. El presente artículo se centra en el papel que ésta desempeña en el desarrollo de la vida espiritual y trascendental. Para ello, realizaremos un repaso histórico de su evolución estética y social, abordaremos dicho fenómeno a nivel fisiológico y presentaremos sus aplicaciones clínicas y sociales. Seguidamente y a modo de ejemplo de las concepciones de pensamiento occidental y oriental, trataremos la forma en que el cristianismo y el budismo conciben la música dentro de su doctrina. Finalizaremos con algunas reflexiones sobre el tema.

Is the L a meson?

The Kππ enhancement at 1780 MeV (the "L meson") is copiously produced in our K+p experiment at 12 GeV/c. We show that this "meson" can be explained as a threshold enhancement in the KN(1420)π system. We see no evidence for this enhancement in channels other than KN(1420)π. © 1969 The American Physical Society.

Engineering a Quantum Many-body Hamiltonian with Trapped Ions

While fault-tolerant quantum computation might still be years away, analog quantum simulators offer a way to leverage current quantum technologies to study classically intractable quantum systems. Cutting edge quantum simulators such as those utilizing ultracold atoms are beginning to study physics which surpass what is classically tractable. As the system sizes of these quantum simulators increase, there are also concurrent gains in the complexity and types of Hamiltonians which can be simulated. In this work, I describe advances toward the realization of an adaptable, tunable quantum simulator capable of surpassing classical computation. We simulate long-ranged Ising and XY spin models which can have global arbitrary transverse and longitudinal fields in addition to individual transverse fields using a linear chain of up to 24 Yb+ 171 ions confined in a linear rf Paul trap. Each qubit is encoded in the ground state hyperfine levels of an ion. Spin-spin interactions are engineered by the application of spin-dependent forces from laser fields, coupling spin to motion. Each spin can be read independently using state-dependent fluorescence. The results here add yet more tools to an ever growing quantum simulation toolbox. One of many challenges has been the coherent manipulation of individual qubits. By using a surprisingly large fourth-order Stark shifts in a clock-state qubit, we demonstrate an ability to individually manipulate spins and apply independent Hamiltonian terms, greatly increasing the range of quantum simulations which can be implemented. As quantum systems grow beyond the capability of classical numerics, a constant question is how to verify a quantum simulation. Here, I present measurements which may provide useful metrics for large system sizes and demonstrate them in a system of up to 24 ions during a classically intractable simulation. The observed values are consistent with extremely large entangled states, as much as ~95% of the system entangled. Finally, we use many of these techniques in order to generate a spin Hamiltonian which fails to thermalize during experimental time scales due to a meta-stable state which is often called prethermal. The observed prethermal state is a new form of prethermalization which arises due to long-range interactions and open boundary conditions, even in the thermodynamic limit. This prethermalization is observed in a system of up to 22 spins. We expect that system sizes can be extended up to 30 spins with only minor upgrades to the current apparatus. These results emphasize that as the technology improves, the techniques and tools developed here can potentially be used to perform simulations which will surpass the capability of even the most sophisticated classical techniques, enabling the study of a whole new regime of quantum many-body physics.

Ecos de Sylvia Plath: políticas del secreto, poéticas del fantasma

Partiendo fundamental pero no exclusivamente de las formas de lectura crítica y de los métodos de análisis textual propuestos por el movimiento crítico denominado Nuevo Historicismo, este estudio tiene por objeto analizar aspectos esenciales de la paulatina modelación y construcción textual o discursiva de Sylvia Plath, poeta icónica de la literatura contemporánea de los EE.UU. La elección de Plath como objeto de estudio se basa en los siguientes motivos: 1) Su ubicación en el canon poético contemporáneo como autora de culto, situación que no se repite en ningún otro poeta coetáneo. Plath ha sido y es identificada como un “mito” o una “leyenda” a la altura de otros iconos de la cultura contemporánea popular proveniente de Norteamérica. 2) La polémica ha rodeado siempre la biografía de esta autora, desde su suicidio a una edad temprana hasta el presente. Dicha polémica surge de forma más señalada alrededor de dos aspectos fundamentales: por un lado, la de su personalidad poética entendida como esencialmente autobiográfica o confesional, cuestión a menudo disputada; y por otro lado su estatus como figura icónica de la cultura norteamericana (y no solo en el ámbito de las letras). Como icono de la cultura norteamericana, Plath ha sido etiquetada en algunos ámbitos como “la Marilyn Monroe de los literatos”, es decir, una joven artista, con una prometedora carrera, desaparecida demasiado pronto y congelada de ese modo en el inconsciente colectivo. 3) La situación particular en torno a lo que podemos convenir en denominar su “yo textual”. Esta situación cobra una especial relevancia en el mundo de las letras y la cultura. Sylvia Plath estaba casada en el momento de su suicidio en 1963 con el joven poeta inglés Ted Hughes, de carrera prometedora, y futura figura central de las instituciones británicas como Poeta Laureado que fue desde 1984 hasta su muerte en 1998. A la muerte de Plath, los permisos de publicación de todos sus escritos y materiales quedaron en manos de Ted Hughes, que a lo largo de las décadas, y pese a que en 1963 la pareja vivía separada como consecuencia de una crisis producto de una infidelidad de Hughes, publicó los escritos de Plath siempre de acuerdo con su criterio personal. Las desavenencias entre la pareja, la posesión de Hughes de los derechos de autor de Plath, la publicación idiosincrática que Hughes hizo de los textos de Plath (fragmentaria, poco planificada, aunque siempre informada y matizada por sus propios prefacios, notas e introducciones) le granjearon poca empatía, cuando no manifiesta hostilidad, por parte de sectores del público y la crítica, en especial el feminismo...

La política del Presidente Wilson en América Central: la lucha contra la inestabilidad económica

Introducción Los planificadores de  la política exterior de Estados Unidos siempre le han presentado gran interés a la estratégica región centroamericana. Los europeos habían invertido intensamente en la región y Estados Unidos comprendía que, a menos que asumiera la responsabilidad por la estabilidad económica y política de los estados centroamericanos, los gobiernos de Europa ignorarían la Doctrina Monroe cuando se tratase e proteger los intereses del exterior, Estados Unidos deberá mantener el orden, per la abierta intervención militar era costosa y era generadora de mala voluntad en todo el hemisferio. En  consecuencia, el gobierno de Wilson buscó otros medios para promover la estabilidad y la hegemonía estadunidense. La Primera Guerra Mundial produjo una coyuntura de especiales oportunidades, así como de particulares riesgos.