Without a reliable design method for the leaching and seepage step of in situ (ISL), problems such as low comprehensive resource recovery rate frequent geological disasters landslides are prominent. This study established simplified “liquid injection-collection” plane model ISL with linear barefoot type rare earth mine research object. The steady line equation was derived based on groundwater d...

Concentric circular arrays are increasingly shown more interest in antenna design for generating low sidelobe patterns as they have radial symmetry and an invariant beam in the azimuthal plane. Such patterns are desirable in low EMI applications. In the present work, an attempt is made to generate low sidelobe patterns from concentric circular arrays by optimizing both ring radii and individual...

A novel waveform optimization metric is proposed that encapsulates both the continuous-time nature of a frequencymodulated (FM) waveform and the discrete-time nature of the pulse compression receive filter. A continuous-time waveform model is used whose phase function is defined as a weighted sum of Legendre polynomials, thus parameterizing the continuous-time waveform with a discrete set of co...

Massive multiple input multiple output antenna array is crucial for the fifth generation wireless communication. Proper antenna array design can reduce interference among different signals and generate desirable beamforming. Sparse antenna array is able to form narrower beam with lower sidelobe than equally spaced antenna array given the same number of array elements. However, determining the p...

Sidelobes cancellation is challenging task in beamforming and beam steering in smart antenna systems. The high level of sidelobes can significantly degrade the system performance as well as antenna power efficiency. In this paper, we present the new decimal genetic algorithm to reduce the sidelobe and at the same time create the nulls toward interferers and jammers. This technique takes advanta...

This paper discusses the development of an automatic machine translation (MT) system for translating spoken language text into signed languages (SLs). The motivation for our work is the improvement of accessibility to airport information announcements for D/deaf and hard of hearing people. This paper demonstrates the involvement of Deaf colleagues and members of the D/deaf community in Ireland ...

Indian Sign Language (ISL) consists of static as well as dynamic hand gestures for communication among deaf and dumb persons. Most of the ISL gestures are produced using both hands. A video database is created and utilized which contains several videos, for a large number of signs. Direction histogram is the feature used for classification due to its appeal for illumination and orientation inva...

Sign language is a visual for communication used by hearing-impaired people with the help of hand and finger movements. Indian Language (ISL) well-developed standard way living in India. However, other who use spoken always face difficulty while communicating person due to lack sign knowledge. In this study, we have developed 3D avatar-based learning system that converts input speech/text into ...