•  13
    Structural, electronic and optical properties of ultrathin thallium nanowires – anab initiostudy
    with B. K. Agrawal, V. Singh, and R. Srivastava
    Philosophical Magazine 87 (16): 2335-2353. 2007.
  •  29
    Categorization of Hindi phonemes by neural networks
    with A. Dev and D. R. Choudhury
    AI and Society 17 (3-4): 375-382. 2003.
    The prime objective of this paper is to conduct phoneme categorization experiments for Indian languages. In this direction a major effort has been made to categorize Hindi phonemes using a time delay neural network (TDNN), and compare the recognition scores with other languages. A total of six neural nets aimed at the major coarse of phonetic classes in Hindi were trained. Evaluation of each net on 350 training tokens and 40 test tokens revealed a 99% recognition rate for vowel classes, 87% for …Read more
  • © 2014 Sangeetha Prakash et al.Chlamydophila pneumoniae is a common respiratory pathogen that causes a chronic and persistent airway infection. The elderly display an increased susceptibility and severity to this infection. However, the underlying mechanisms are not well understood. Dendritic cells are the initiators and regulators of immune responses. Therefore, we investigated the role of DCs in the age-associated increased CPn infection in vitro in humans. Though the expression of activation …Read more
  •  56
    Automatic phonetic segmentation of Hindi speech using hidden Markov model
    with Archana Balyan and Amita Dev
    AI and Society 27 (4): 543-549. 2012.
    In this paper, we study the performance of baseline hidden Markov model (HMM) for segmentation of speech signals. It is applied on single-speaker segmentation task, using Hindi speech database. The automatic phoneme segmentation framework evolved imitates the human phoneme segmentation process. A set of 44 Hindi phonemes were chosen for the segmentation experiment, wherein we used continuous density hidden Markov model (CDHMM) with a mixture of Gaussian distribution. The left-to-right topology w…Read more