995 research outputs found
Creation of speech corpus for emotion analysis in Gujarati language and its evaluation by various speech parameters
In the last couple of years emotion recognition has proven its significance in the area of artificial intelligence and man machine communication. Emotion recognition can be done using speech and image (facial expression), this paper deals with SER (speech emotion recognition) only. For emotion recognition emotional speech database is essential. In this paper we have proposed emotional database which is developed in Gujarati language, one of the official’s language of India. The proposed speech corpus bifurcate six emotional states as: sadness, surprise, anger, disgust, fear, happiness. To observe effect of different emotions, analysis of proposed Gujarati speech database is carried out using efficient speech parameters like pitch, energy and MFCC using MATLAB Software
Developing the MTO Formalism
We review the simple linear muffin-tin orbital method in the atomic-spheres
approximation and a tight-binding representation (TB-LMTO-ASA method), and show
how it can be generalized to an accurate and robust Nth order muffin-tin
orbital (NMTO) method without increasing the size of the basis set and without
complicating the formalism. On the contrary, downfolding is now more efficient
and the formalism is simpler and closer to that of screened multiple-scattering
theory. The NMTO method allows one to solve the single-electron Schroedinger
equation for a MT-potential -in which the MT-wells may overlap- using basis
sets which are arbitrarily minimal. The substantial increase in accuracy over
the LMTO-ASA method is achieved by substitution of the energy-dependent partial
waves by so-called kinked partial waves, which have tails attached to them, and
by using these kinked partial waves at N+1 arbitrary energies to construct the
set of NMTOs. For N=1 and the two energies chosen infinitesimally close, the
NMTOs are simply the 3rd-generation LMTOs. Increasing N, widens the energy
window, inside which accurate results are obtained, and increases the range of
the orbitals, but it does not increase the size of the basis set and therefore
does not change the number of bands obtained. The price for reducing the size
of the basis set through downfolding, is a reduction in the number of bands
accounted for and -unless N is increased- a narrowing of the energy window
inside which these bands are accurate. A method for obtaining orthonormal NMTO
sets is given and several applications are presented.Comment: 85 pages, Latex2e, Springer style, to be published in: Lecture notes
in Physics, edited by H. Dreysse, (Springer Verlag
Necrophiliac Behavior in the Common Asian Toad, Duttaphrynus melanostictus (Schneider, 1799) in Western India
Third-Generation TB-LMTO
We describe the screened Korringa-Kohn-Rostoker (KKR) method and the
third-generation linear muffin-tin orbital (LMTO) method for solving the
single-particle Schroedinger equation for a MT potential. The simple and
popular formalism which previously resulted from the atomic-spheres
approximation (ASA) now holds in general, that is, it includes downfolding and
the combined correction. Downfolding to few-orbital, possibly short-ranged,
low-energy, and possibly orthonormal Hamiltonians now works exceedingly well,
as is demonstrated for a high-temperature superconductor. First-principles sp3
and sp3d5 TB Hamiltonians for the valence and lowest conduction bands of
silicon are derived. Finally, we prove that the new method treats overlap of
the potential wells correctly to leading order and we demonstrate how this can
be exploited to get rid of the empty spheres in the diamond structure.Comment: latex2e, 32 printed pages, Postscript figs, to be published in:
Tight-Binding Approach to Computational Materials Science, MRS Symposia
Proceedings No. 491 (MRS, Pittsburgh, 1998
DETERMINATION AND QUANTIFICATION OF PACLITAXEL IN HUMAN PLASMA BY LC-MS/MS: APPLIED METHOD TO THERAPEUTIC DRUG MONITORING
A high throughput liquid chromatography-tandem mass spectrometric (LC-MS/MS) method for the determination and quantification of anti-cancer drug Paclitaxel in human plasma is described for the application to therapeutic drug monitoring. It is rapid and sensitive binary phase reversed phase LC-MS/MS method equipped with electro spray ionization (ESI) source and C18 column (100 mm x 4.6mm, 5μm), operating in the positive ion and multiple reaction monitoring (MRM) mode. The extraction of Paclitaxel and Carbamazepine (Internal standard) from the human plasma was carried out by two phase liquid-liquid extraction (LLE) method using methyl tert butyl ether (MTBE) as an extractive solvent giving extracts free from endogenous interferences. The retention time of Paclitaxel is 1.44 minutes with the flow rate of 0.5 mL/minutes. Sample preparation by this method yielded very good and consistent mean recoveries of Paclitaxel and IS. The method was linear over the dynamic range 5.00 to 3000.00 ng/mL (r2 0.997). The lower limit of detection and quantification for Paclitaxel on mass was found to be 5 ng/mL. This method was fully validated as per USFDA and EMEA guidelines. Conclusion: The proposed LCMS/MS method has better performance in terms of simplicity, sensitivity, stability and specificity than the previously reported methods. Moreover, there is rapid sample preparation, adequate retention and better extraction efficiency with less matrix interferences. Therefore, it can be considered as a suited bio-analytical tool for therapeutic drug monitoring and pharmacokinetic analysis during chemotherapy
Functional outcome of intra-articular tongue type of calcaneus fractures treated with percutaneous technique
Background: Intra-articular calcaneus fracture is relatively rare and morbidity correlates with displacement and relative alignment of fragments. The treatment should address both components to maintain mechanics of foot. Among the available options open reduction and internal fixation is associated with major soft tissue complications and wound healing problems. As an alternative percutaneous fixation offer fewer complications yet good results for less severe calcaneus fractures. Our study aimed to contribute paucity of data available for these rare fractures and help to propose a preferred method of treatment.Methods: A hospital based study carried out on 20 patients over period of 2 year with closed displaced intra-articular tongue type of calcaneal fracture treated with percutaneous fixation and outcome was evaluated using clinical, radiological criteria and American Orthopaedic Foot & Ankle Society (AOFAS) score. All patients were followed up for minimum 9 months with mean follow up of 13.5 month.Results: All patients had evidence of union within 2 month follow up. Mean correction in Bohler angle and Gissane angle was 23.2° and 25.4° respectively at final follow up. Mean change in heel height was 3.15 mm and width change was 2.75 mm compare to opposite side. Mean eversion inversion arch was 28° and near normal ankle range of motion. Functional outcome calculated on bases of AOFAS score revealed 18 patients (90%) had good results and 2 patients (10%) had fair results. Mean AOFAS score was 81.25. Complications were reported in three patients, one had signs of peroneal tendinitis and two had persistent pain and heel widening. Conclusions: We believe percutaneous fixation should be considered as a preferred method for mild to moderately displaced tongue type of intraarticular calcaneus fractures. It potentially allows anatomical fracture reduction with lesser complications and good functional outcome
Wave reflection, assessed by use of the ARCSolver Algorithm for pulse wave separation, is reduced under acute µg conditions in parabolic flight
Weightlessness during long-term space flight over
6-12 months leads to complex individual
cardiovascular adaptation. The initial central
blood volume expansion followed by a loss of
plasma volume is accompanied by changes in
vascular mechanoreceptor loads and
responsive-ness, altered autonomic reflex control
of heart rate and blood pressure, and hormonal
changes in the long run. Hence, function and
structure of the heart and blood vessels may
change. Hemodynamic data obtained during
short- and long-term space flight may indicate
that the adaptation process resembles ageing of
the cardiovascular system characterized by
decreased diastolic blood pressure, increased
central sympathetic nerve traffic and increased
arterial pulse wave velocity. Experiments during
parabolic flights in supine position suggest, that
stroke volume does not change during transitions
between µ-g and 1-g.
We tested a novel method of pulse wave
separation based on simple oscillometric brachial
cuff waveform reading to investigate pulse wave
reflection during acute weightlessness in healthy
subjects. We hypothesized that the wave
reflection magnitude (RM) remains unaltered
during parabolic flights in supine position
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