Invisible but not forgotten: The Afro-Argentine and Afro-Uruguayan experience from the sixteenth to the twentieth centuries

The problem to be examined in this thesis involves the supposedly overlooked history and contributions of Africans and their descendants in the River Plate countries of Argentina and Uruguay. Therefore, the primary purpose of the study is to narrate the social history of Afro-Argentines and Afro-Uruguayans from the sixteenth to the twentieth century. A secondary purpose, moreover, is to synthesize the academic literature on Blacks in the Rio de la Plata and their many cultural and other contributions to the current nation-states of Argentina and Uruguay. This thesis thereby challenges the regnant historiographical argument that African Argentines and African Uruguayans have been “forgotten” as historical actors by scholars both inside and outside the Rio de la Plata. By synthesizing the large body of historical and social science scholarship on Africans in the River Plate, as well as providing a thorough bibliography on the subject, this study attempts to proffer (to borrow the subtitle of Marvin Lewis' 1996 study of Afro-Argentine literature) “another dimension of the Black Diaspora” to the Americas. ^

The Argentine Dilemma: “Vulture Funds” and the Risks Posed to Developing Economies

Post-crisis Argentina is a case study of crisis management through debt restructuring. This article examines how Argentina negotiated the external debt in the wake of the sovereign default in December 2001 and now confronts challenges posed by holdout creditors—the so called “vulture funds”. It argues that debt restructuring has put a straitjacket on the national economy, making it virtually impossible for healthy growth short of a break with the international economic order. While Argentina has successfully restructured a $95 billion debt with an unprecedented “hair cut” (around 70% reduction in “net value of debt”), a sustainable growth appears out of reach as long as reliance on the government debt market prevails. In this cycle, the transmission belt of financial crisis to developing countries is characterized by the entry of highly speculative players such as hedge funds, conflicts of interests embedded in “sovereign debt restructuring” (SDR) and vulnerabilities associated with “emerging market debt”.

On-screen pre-deblurring of digital images using the wavefront aberration function of the human eye to improve computer access for the visually impaired

Traditional Optics has provided ways to compensate some common visual limitations (up to second order visual impairments) through spectacles or contact lenses. Recent developments in wavefront science make it possible to obtain an accurate model of the Point Spread Function (PSF) of the human eye. Through what is known as the "Wavefront Aberration Function" of the human eye, exact knowledge of the optical aberration of the human eye is possible, allowing a mathematical model of the PSF to be obtained. This model could be used to pre-compensate (inverse-filter) the images displayed on computer screens in order to counter the distortion in the user's eye. This project takes advantage of the fact that the wavefront aberration function, commonly expressed as a Zernike polynomial, can be generated from the ophthalmic prescription used to fit spectacles to a person. This allows the pre-compensation, or onscreen deblurring, to be done for various visual impairments, up to second order (commonly known as myopia, hyperopia, or astigmatism). The technique proposed towards that goal and results obtained using a lens, for which the PSF is known, that is introduced into the visual path of subjects without visual impairment will be presented. In addition to substituting the effect of spectacles or contact lenses in correcting the loworder visual limitations of the viewer, the significance of this approach is that it has the potential to address higher-order abnormalities in the eye, currently not correctable by simple means.