The James Webb Space Telescope Mission

Twenty-six years ago a small committee report, building on earlier studies, expounded a compelling and poetic vision for the future of astronomy, calling for an infrared-optimized space telescope with an aperture of at least $4m$. With the support of their governments in the US, Europe, and Canada, 20,000 people realized that vision as the $6.5m$ James Webb Space Telescope. A generation of astronomers will celebrate their accomplishments for the life of the mission, potentially as long as 20 years, and beyond. This report and the scientific discoveries that follow are extended thank-you notes to the 20,000 team members. The telescope is working perfectly, with much better image quality than expected. In this and accompanying papers, we give a brief history, describe the observatory, outline its objectives and current observing program, and discuss the inventions and people who made it possible. We cite detailed reports on the design and the measured performance on orbit.Comment: Accepted by PASP for the special issue on The James Webb Space Telescope Overview, 29 pages, 4 figure

Cómo aplicar los beneficios tributarios para el sector petrolero colombiano, en relación con el mejoramiento del medio ambiente

EL presente trabajo de grado el cual lleva como titulo, Cómo Aplicar los Beneficios Tributarios del Sector Petrolero Colombiano, en Relación con el Mejoramiento del Medio Ambiente, corresponde al desarrollado por un grupo de estudiantes de décimo semestre de Contaduría Pública, Facultad de Ciencias Empresariales de la Universidad de San Buenaventura sede Bogotá, segundo periodo académico 2005, con el propósito de optar al titulo de Contador Público. Los integrantes que desarrollaron la investigación son Álvaro Peña Núñez, Manuel Felipe Macias Marín y Marco Edwin Peñuela Muñoz, los cuales iniciaron el desarrollo del tema, bajo la dirección del doctor Libardo Laguna Maldonado catedrático de la Facultad de Ciencias Empresariales. El desarrollo del trabajo se inicia a partir de la presentación del anteproyecto y su posterior aprobación por parte de la Facultad de Ciencias Empresariales de la Universidad de San Buenaventura sede Bogotá., dando lugar a su culminación como trabajo de Grado

The James Webb Space Telescope Mission

Twenty-six years ago a small committee report, building on earlier studies, expounded a compelling and poetic vision for the future of astronomy, calling for an infrared-optimized space telescope with an aperture of at least 4 m. With the support of their governments in the US, Europe, and Canada, 20,000 people realized that vision as the 6.5 m James Webb Space Telescope. A generation of astronomers will celebrate their accomplishments for the life of the mission, potentially as long as 20 yr, and beyond. This report and the scientific discoveries that follow are extended thank-you notes to the 20,000 team members. The telescope is working perfectly, with much better image quality than expected. In this and accompanying papers, we give a brief history, describe the observatory, outline its objectives and current observing program, and discuss the inventions and people who made it possible. We cite detailed reports on the design and the measured performance on orbit