How do discourses enable and constrain the power of development practitioners in interactions within the women's circle?

Includes abstract. Includes bibliographical references

The Evolution of Latin Jazz Music and Dance : Under the Skin

The story of Latin American music and dance is one of cross-pollination where the dances, rhythms, instrumentation and social rituals of distinctive cultures coalesced into new forms of expression. Along the continuum of styles was Latin Jazz, the result of the mutual fascination that Afro-Cuban and jazz musicians shared for each other’s artistry. Most types of Latin music have their own dance forms, which evolved simultaneously with the music, often graduating from the streets to the dance clubs and sometimes to stages. Latin Jazz music took its own path, originating on the bandstand without the parallel emergence of a dance form one would officially call “Latin Jazz dance.” In my research, I set out to expand my understanding of the evolution of Latin Jazz music and dance and attempt to answer the question: How can I define Latin Jazz Dance and trace its evolution into what it is today? Armed with that knowledge, in the future I intend to teach dancers and choreographers about the music and dance and to stage works for concert performance in the genre

Novel achromatic single reflection quarter-wave retarder: design and measurement

In this work, we present an achromatic quarter-wave retarder whose design is based upon the reflection properties of an isotropic-anisotropic interface. In theory, it is possible to obtain a π/2 phase shift by means of a total internal reflection at an isotropic-isotropic interface. However, in order to achieve such a phase shift, it is necessary to use a medium with a particularly high refractive index. We have previously shown that these phase shifts can be achieved by means of a total internal reflection in an isotropic-uniaxial interface, which allows the use of smaller refractive index media. By means of this property, we designed, built, and characterized a novel quarter-wave retarder that makes it possible to obtain circularly polarized light from a linear polarization state. We developed some guidelines that allowed us to obtain a device of competitive performance, low cost, and manageable manufacture.Fil: Veiras, Francisco Ezequiel. Universidad de Buenos Aires. Facultad de Ingeniería. Departamento de Física; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Raffa, G.. Universidad de Buenos Aires. Facultad de Ingeniería. Departamento de Física; ArgentinaFil: Caré, D.. Universidad de Buenos Aires. Facultad de Ingeniería. Departamento de Física; ArgentinaFil: Perez, Liliana Ines. Universidad de Buenos Aires. Facultad de Ingeniería. Departamento de Física; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Garea, María Teresa. Universidad de Buenos Aires. Facultad de Ingeniería. Departamento de Física; Argentin