ABSTRACT: Soil compactation is problem in modern agriculture. Over cultivation, intensive cropping and inappropriate soil management leads to soil compactation. There are important factors which directly affect plant growth, such as water, oxygen, temperature and mechanical resistance to seedling emergence…

The combination of soil science, forestry, agronomy and biology allowed an analytical comparison of various experimental mixed culture systems. From these studies, a descriptor system was developed which allows to understand the contribution of each plant species to nutrient cycling,…

Dust is an ubiquitous inhabitant of the interstellar medium, and leaves an unmistakable signature in its optical properties, and physico-chemical evolution. Although there is little direct knowledge of the true nature of interstellar dust grains, strong evidences point toward the…

(cont.) and (2) a forward approach which achieves optimality at the start and grows the system using an optimization technique. We systematically compare the two staging techniques in the context of telescope arrays and evaluate the hypothesis that the backward…

One important purpose for creating clinical practice guidelines is to improve quality of care by reducing variations in practice. In the current healthcare environment, guidelines are being advocated as a means to disseminate research findings, standardize care, improve quality of…

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Este escrito constituye una reflexión teórica sobre el Proyecto Educativo Bolivariano que actualmente está ejecutando el gobierno nacional, particularmente, aquellos aspectos relacionados con la implantación del Seminario de Investigación para el Desarrollo Endógeno dentro de la estructura curricular de los…

by Lloyd Brodsky., Thesis (Ph. D.)--Massachusetts Institute of Technology, Sloan School of Management, 1991., Includes bibliographical references (leaves 205-210).

by Christopher Gabriel Rodarte., Thesis (M.Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1998., Includes bibliographical references (leaves 91-94).

by Susan Jane Dwyer., Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Linguistics and Philosophy, 1991., Includes bibliographical references (p. 280-289).