Abstract— One of the important applications of Radar is to track and search the target in interfering environment. Which requires design of an array antenna with the most important property is, the ability to form precisely located deep pattern null for angle tracking. In this paper an attempt is made to analyze difference patterns for some of the odd symmetric excitation amplitude functions. T...

This article presents a new algorithm to recognize natural distinctive places such as corridors, halls, narrowings, corridors with open doors on the left side etc., from indoor environments using Hidden Markov Models. The environment is modelled as a graph. This graph is obtained from a Voronoi Diagram from measurements of laser scanner. The characteristics of Voronoi Diagram (nodes, number of ...

Theoretical assumptions, research methodologies and results applications of innovative geological and geomorphological mapping for landslide hazard evaluation in the alpine environment are presented in the paper. Case studies from the Italian NW-Alps highlight the role of Geomatics techniques in enhancing the accuracy of multitemporal reconstructions of geomorphic processes and landforms. Aeria...

We present imaging and spectroscopic observations of 2 nearby (z < 0.1) ULIRGs from a larger sample, and address the question of whether the JHK continuum colours and slope might be effective probes of the nuclear region in searches for AGN. Certainly there is evidence for significant quantities of hot dust emission at temperatures ∼ > 1000 K; but it may be that rather than pointing to an AGN, ...

The deposition of the Lower Cambrian argillaceous rocks on Kongquehe slope provides a good opportunity to reconstruct paleoenvironmental conditions Tarim Basin. To explore paleoredox conditions, paleoclimate, and provenance this deposit, 21 samples were collected from Well A, concentrations major trace elements analyzed. V/(V + Ni), V/Cr, Ni/Co, U/Th, Uau, V/Sc ratios indicated that sediments i...

The Zhangcheng District is critically responsible for protecting water resources, preserving sand sources, and improving the ecological environment in Beijing. Quantitative evaluation research on ecosystem supply services this area are beneficial developing conservation planning establishing compensation mechanisms areas. In paper, based land use, meteorological, soil, field observation data of...

geographical position, topographic conditions and climatic variety have caused the ‎province of zanjan to be known as the province of four seasons. its unique ‎ecological conditions, forest and pasture coverage, numerous water resources, ‎wildlife, several hunting zones, protected areas, caves, waterfalls, springs and tens of ‎other beautiful unique landscapes have caused this province ...