Surface hydrodynamical models through synoptic interpretation of LANDSAT MSS images in lagoonal and coastal waters

There are no author-identified significant results in this report

Spatial and temporal variations in lagoon and coastal processes of the southern Brazilian coast

From a collection of information gathered during a long period, through the orbital platforms SKYLAB and LANDSAT, it was possible to establish a method for the systematic study of the dynamical regime of lagoon and marine surface waters, on coastal plain of Rio Grande do Sul. The series of multispectral images analyzed by visual and automatic techniques put in evidence spatial and temporal variations reflected in the optical properties of waters, which carry different loads of materials in suspension. The identified patterns offer a synoptic picture of phenomena of great amplitude, from which trends of circulation can be inferred, correlating the atmospheric and hydrologic variables simultaneously to the overflight of orbital vehicles

Design of catalytic monoliths for closed-cycle carbon dioxide lasers

Pulsed carbon dioxide (CO2) lasers have many applications in aeronautics, space research, weather monitoring and other areas. Full exploitation of the potential of these lasers in hampered by the dissociation of CO2 that occurs during laser operation. The development of closed-cycle CO2 lasers requires active CO-O2 recombination (CO oxidation) catalyst and design methods for implementation of catalysts in CO2 laser systems. A monolith catalyst section model and associated design computer program, LASCAT, are presented to assist in the design of a monolith catalyst section of a closed cycle CO2 laser system. Using LASCAT,the designer is able to specify a number of system parameters and determine the monolith section performance. Trade-offs between the catalyst activity, catalyst dimensions, monolith dimensions, pressure drop, O2 conversion, and other variables can be explored and adjusted to meet system design specifications. An introduction describes a typical closed-cycle CO2 system, and indicates some advantages of a closed cycle laser system over an open cycle system and some advantages of monolith support over other types of supports. The development and use of a monolith catalyst model is presented. The results of a design study and a discussion of general design rules are given

International Convergence of Accounting Standards-Perspectives from the FASB on Challenges and Opportunities

Convergence of international accounting standards is not a new initiative at the Financial Accounting Standards Board (FASB or Board); in fact, the FASB has pursued international convergence for almost half of its more than thirty year existence.\u27 The FASB\u27s international activities initially fell under the heading of harmonization, or internationalization, of accounting standards. Today those activities are referred to as convergence.Whatever the term, the Board has long held the view that a single set of high-quality international accounting standards is desirable because its use will improve international comparability of financial information; reduce costs to financial statement users, preparers, auditors, and others; and, ultimately, help promote the efficiency of the world\u27s capital markets. To that end, the FASB has and continues to invest considerable time and resources in convergence efforts

A method for the automatic standards for classification of multispectral images obtained from orbit in coastal waters

There are no author-identified significant results in this report