Use of variable lift control to optimize aerodynamic braking for a Mars entry vehicle

Variable lift control to obtain maximum velocity reduction through aerodynamic braking for Mars entr

Variable time optimal control

Computational algorithms and techniques for solving variable time optimal control problem

Some recent results in aerospace vehicle trajectory optimization techniques

Algorithms and computation techniques for solving trajectory optimization problem

1 The Prosodic Marking of Phrase Boundaries: Expectations and Results

ABSTRACT Using sentence templates and a stochastic context-free grammar a large corpus (10,000 sentences) has been created, where prosodic phrase boundaries are labeled in the sentences automatically during sentence generation. With perception experiments on a subset of 500 utterances we verified that 92 % of the automatically marked boundaries were perceived as prosodically marked. In initial automatic classification experiments for three levels of boundaries recognition rates up to 81 % could be achieved. 1.1 Introduction and Material A successful automatic detection of phrase boundaries can be of great help for parsing a word hypotheses graph in an automatic speech understanding (ASU) system. Our recognition paradigm lies within the statistical approach; we therefore need a large training database, i.e. a corpus with reference labels for prosodically marked phrase boundaries. In this paper we wil

Diurnal survey of the thermosphere Final report

Nike-Tomahawk launched soundings over Cape Kennedy to study composition and diurnal variations of thermospher

Proposta de organização e visualização de grande quantidade de imagens orbitais através de web services.

The organization of satellite imagery seeks to facilitate the presentation and manipulation of spatial information in projects of Land Management's Strategic area from Embrapa Satellite Monitoring, enabling integration between mapped data and interoperability of image data and mapped regions. As a way to standardize this organization, we followed the recommendations of national and international bodies that deal with the standardization of geographic metadata, specifically satellite images. To view this integration, a webmapping interface was created. A webmapping must be prepared to meet the needs of relationship between user and product. In this paper we propose a standardized structure for storage and maintenance of images obtained by satellite sensors aiming its availability on the web through web map services, examples of interoperability. The non-interoperability prevents sharing of information and computing resources. The visualization of web map services takes place through a webmapping that benefits from the organization structure of satellite images proposed in this paper. The hierarchical organization proposed research assistance of satellite images. As they are entered into the database, now new images will be organized in a logical structure, without affecting the search for listings older images. The webmapping allows a direct link between the metadata and geospatial data visualization. Combining web services based on Geographic Information Systems (GIS) in conjunction with the Flex technology allows the creation of Rich Internet Applications (RIA) giving the user more possibilities of interaction via the Web

Twinning phenomena along and beyond the bain path

Twinning is a phenomenon that occurs, e.g., during deformation, martensitic transformation and film growth. The present study shows that the crystallography of twinning can be described by two twinning modes along the complete Bain transformation path and beyond connecting body-centered and face-centered cubic structures. To probe this concept, we used strained epitaxial films of the Fe-Pd magnetic shape memory system. As the substrate acts as an absolute reference frame, we could show by pole figure measurements that all observed twinning can be a body-centered and face-centered cubic twinning mode. This continuously transforms towards identity when approaching the complementary structure