Sweatshop Solutions? : Economic Ground Zero in Bangladesh and Wal-Mart’s responsibility

This document is part of a digital collection provided by the Martin P. Catherwood Library, ILR School, Cornell University, pertaining to the effects of globalization on the workplace worldwide. Special emphasis is placed on labor rights, working conditions, labor market changes, and union organizing.ilrf_Sweatshop_Solutions.pdf: 465 downloads, before Oct. 1, 2020

Serendipitous Discovery of An Infrared Bow Shock Near PSR J1549-4848 with Spitzer

We report on the discovery of an infrared cometary nebula around PSR J1549$-$4848 in our Spitzer survey of a few middle-aged radio pulsars. Following the discovery, multi-wavelength imaging and spectroscopic observations of the nebula were carried out. We detected the nebula in Spitzer IRAC 8.0, MIPS 24 and 70 $\mu$m imaging and in Spitzer IRS 7.5--14.4 $\mu$m spectroscopic observations, and also in the WISE all-sky survey at 12 and 22 $\mu$m.These data were analyzed in detail, and we find that the nebula can be described with a standard bow-shock shape, and that its spectrum contains polycyclic aromatic hydrocarbon and H$_2$ emission features. However, it is not certain which object drives the nebula. We analyze the field stars and conclude that none of them can be the associated object because stars with a strong wind or mass ejection that usually produce bow shocks are much brighter than the field stars. The pulsar is approximately 15\arcsec\ away from the region in which the associated object is expected to be located. In order to resolve the discrepancy, we suggest that a highly collimated wind could be emitted from the pulsar and produce the bow shock. X-ray imaging to detect the interaction of the wind with the ambient medium and high-spatial resolution radio imaging to determine the proper motion of the pulsar should be carried out, which will help verify the association of the pulsar with the bow shock nebula.Comment: 9 pages, 5 figures, accepted for publication in Ap

Subsidizing Sweatshops: How our tax dollars fund the race to the bottom, and what cities and states can do

This document is part of a digital collection provided by the Martin P. Catherwood Library, ILR School, Cornell University, pertaining to the effects of globalization on the workplace worldwide. Special emphasis is placed on labor rights, working conditions, labor market changes, and union organizing.ilrf_Subsidizing_Sweatshops_hr_color1.pdf: 646 downloads, before Oct. 1, 2020

Simulação e otimização de destilação múltiplo efeito de um sistema de separação de etilbenzeno e estireno

Em processos de destilação convencionais, uma grande quantidade de energia é requerida, parte na forma de calor fornecido ao refervedor da coluna e parte para a condensação da corrente de vapor que sai no topo. A fim de diminuir a demanda energética da operação de destilação, diversas alternativas de reuso de energia, via integração energética, estão disponíveis na literatura. No presente trabalho, foi apresentado um estudo de caso em uma unidade petroquímica de separação de etilbenzeno e estireno com a configuração de destilação duplo efeito. Três principais simulações foram realizadas. Em um primeiro momento, o processo foi simulado sem nenhuma integração energética para verificar a demanda energética em um processo não otimizado. Após, o processo com a integração de energia foi simulado e validado com dados de planta. Por fim foram realizadas otimizações para verificar se ainda havia espaço para redução no calor total requerido, sem comprometer a separação dos compostos.Os resultados obtidos indicam que a configuração Duplo Efeito gera uma redução de cerca de 50 % em comparação com duas colunas operando paralelamente sem integração. Na condição otimizada do Duplo Efeito foi verificado que é possível reduzir em até 4 % o consumo de energia, mantendo as mesmas especificações do produto de interesse

Twenty-One Millisecond Pulsars in Terzan 5 Using the Green Bank Telescope

We have discovered 21 millisecond pulsars (MSPs) in the globular cluster Terzan 5 using the Green Bank Telescope, bringing the total of known MSPs in Terzan 5 to 24. These discoveries confirm fundamental predictions of globular cluster and binary system evolution. Thirteen of the new MSPs are in binaries, of which two show eclipses and two have highly eccentric orbits. The relativistic periastron advance for the two eccentric systems indicates that at least one of these pulsars has a mass >1.68 Msun at 95% confidence. Such large neutron star masses constrain the equation of state of matter at or beyond the nuclear equilibrium density.Comment: 12 pages, 2 figures. Accepted by Science. Published electronically via Science Express 13 Jan 200

The effects of methylphenidate on cognitive performance of healthy male rats

We aimed to investigate the effects of methylphenidate (MPH) in healthy rats on two distinct radial maze tasks which rely on brain structures and neurotransmitters known to be affected by MPH: the Random Foraging Non-Delay Task (RFNDT) and the Delayed Spatial Win Shift Task (DSWT). Hooded Lister rats were trained to complete either the RFNDT or the DSWT having received oral treatment of either a vehicle or MPH (3.0 mg/kg and 5.0 mg/kg for RFNDT, 3.0 mg/kg for DSWT). We found no effect of MPH on the RFNDT relative to the control group. However, those treated with 5.0 mg/kg MPH did take significantly longer to reach criterion performance than those treated with the 3.0 mg/kg MPH, suggesting some doses of MPH can have detrimental effects. For the DSWT, if MPH was present in both phases, performance did not differ from when it was absent in both phases. However, when present in only one phase there was an increase in errors made, although this only reached significance for when MPH was present only in the test-phase. These data suggest that MPH may have detrimental effects on task performance and can result in state-dependent effects in healthy individuals

Smoking-Related Attitudes and Knowledge Among Medical Students and Recent Graduates in Argentina: A Cross-Sectional Study

BACKGROUND: Physicians in Argentina smoke at rates similar to the general population, and do not have a clear role in tobacco control strategies. OBJECTIVE: To describe the attitudes and knowledge of medical students and recent graduates towards smoking behavior in Argentina. DESIGN: Cross-sectional self-administered online survey conducted in 2011. PARTICIPANTS: Medical students and recent medical graduates from the University of Buenos Aires. MAIN MEASURES: Attitudes and knowledge were evaluated by responses to 16 statements regarding the effects of smoking cigarettes and the role of physicians in tobacco control. Rates of agreement with a full ban on indoor smoking in different public settings were assessed. KEY RESULTS: The sample included 1659 participants (response rate: 35.1 %), 453 of whom (27.3 %) were current smokers. Only 52 % of participants agreed that doctors should set an example for their patients by not smoking, 30.9 % thought that medical advice had little effect on patients’ cessation behavior, and 19.4 % believed that physicians could decline to care for smoking patients who failed to quit. In adjusted logistic regression models, current smokers had less supportive attitudes about tobacco control and were less likely than non-smokers to agree with a full indoor smoking ban in hospitals (OR: 0.30; 95 % CI 0.16–0.58), universities (OR: 0.55; 95 % CI 0.41–0.73), workplaces (OR: 0.67; 95 % CI 0.50–0.88), restaurants (OR: 0.42; 95 % CI 0.33–0.53), cafes (OR: 0.41; 95 % CI 0.33–0.51), nightclubs (OR: 0.32; 95 % CI 0.25–0.40), and bars (0.35; 95 % CI 0.28–0.45). Recent medical graduates had more accurate knowledge about cessation and were more likely to agree with a full smoking ban in recreational venues. CONCLUSIONS: Although most participants reported a strong anti-tobacco attitude, a proportion still failed to recognize the importance of their role as physicians in tobacco control strategies. Current smokers and current students were less likely to support indoor smoking bans. Specific educational curricula could address these factors.Fil: Salgado, Maria Victoria. Centro de Estudios de Estado y Sociedad; Argentina. Universidad de Buenos Aires. Facultad de Medicina; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Mejia, Raul Mariano. Centro de Estudios de Estado y Sociedad; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Kaplan, Celia. University of California; Estados UnidosFil: Perez Stable, Eliseo. National Institutes of Health; Estados Unido

Argentina, Cuba y Perú: Estudio comparativo de las políticas públicas relativas a los derechos sexuales y (no) reproductivos en perspectiva nacional

El presente artículo propone realizar un análisis de la historia latinoamericana recienteconsiderando avances, resistencias y retrocesos en materia de género, prestando especial atención alas políticas públicas nacionales relativas a los derechos sexuales y (no) reproductivos. Se analizantensiones y conflictos que tuvieron lugar a fines de la década de los '80 y principio de los '90, cuando se produjeron alianzas estratégicas entre organismos internacionales y un sector de los feminismosregionales, cuyas consecuencias se desplegaron con el cambio de milenio. En el análisis, realizado enclave comparada, se reconstruyen las particularidades de los escenarios de Argentina, Perú y Cuba,para dar cuenta de la diversidad de experiencias que muestran que los avances en esta materia no sehan dado de forma unívoca, ni tampoco irreversible.This paper proposes to carry out an analysis of recent Latin American history considering advances, resistance and setbacks in gender matters, paying special attention to national public policies related to sexual and (non) reproductive rights. Tensions and conflicts that took place in the late 1980s and early 1990s are analyzed, when strategic alliances were produced between international organizations and a sector of regional feminisms, the consequences of which unfolded with the turn of the millennium. In the analysis, carried out in a comparative key, the particularities of the scenarios of Argentina, Perú and Cuba are reconstructed, to account for the diversity of experiences that show that advances in this matter has not occurred in a univocal way, nor irreversible.Fil: Batiston, Victoria. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro de Investigaciones y Transferencia Rafaela. - Universidad Nacional de Rafaela. Centro de Investigaciones y Transferencia Rafaela.; ArgentinaFil: Kaplan, Martina. Universidad Nacional de Entre Rios. Instituto de Estudios Sociales. - Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Conicet - Santa Fe. Instituto de Estudios Sociales.; ArgentinaFil: Kiefer, Renata. Universidad Nacional de Entre Rios. Instituto de Estudios Sociales. - Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Conicet - Santa Fe. Instituto de Estudios Sociales.; Argentin

Catalisadores de Ni(II) Tridentados para a Oligomerização do Etileno

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RS1, Custodial Isospin and Precision Tests

We study precision electroweak constraints within a RS1 model with gauge fields and fermions in the bulk. The electroweak gauge symmetry is enhanced to SU(2)_L \times SU(2)_R \times U(1)_{B-L}, thereby providing a custodial isospin symmetry sufficient to suppress excessive contributions to the T parameter. We then construct complete models, complying with all electroweak constraints, for solving the hierarchy problem, without supersymmetry or large hierarchies in the fundamental couplings. Using the AdS/CFT correspondence our models can be interpreted as dual to a strongly coupled conformal Higgs sector with global custodial symmetry, gauge and fermionic matter being fundamental fields external to the CFT. This scenario has interesting collider signals, distinct from other RS models in the literature.Comment: 32 pages, 6 figures, latex2e, minor changes, references adde