Archives-December  

The ultimate goal of the deployment of any voice-centric application is to provide a natural way of human-machine interaction in end-to-end communication and majority of the voice-centric applications in today’s world are promising the same. In this scenario, it is essential to investigate the performance of Speech-Enabled IVR (SEIVR) under the effect of different narrowband codecs. In this paper, the performance of SEIVR has been analyzed by utilizing an ASR engine and speech codecs. SPHNIX-3 has been used as the ASR engine which is CMU’s ASR toolkit for speech recognition and executable files of various narrowband codec are generated with the help of source code and it is taken from standard organizations such as ITU-T, ETSI and ISO/IEC. The results of this paper are completely based on the speech data from TIMIT speech database. The major work done in this paper is to prove that the recognition accuracy of SEIVR increases when there is an increase in Gaussian mixture from Context-Independent (CI) to Context-Dependent (CD) under the influence of various narrow band codecs.

This paper involves the synthesis of photoadduct of Potassium hexacyanoferrate and phenanthroline via photochemical route .The photoadduct has been synthesized by photoirradiation followed by substitution with phenanthroline ligand. The photoaquation, substitution and successful synthesis has been proved by recording pH, colour change, UV visible spectra before and after irradiation. The as synthesized photoadduct has been subjected to various spectroscopic and surface characterization techniques like elemental analysis, UV-visible spectra, XRD, and SEM. XRD of photoadduct shows crystalline structure. Moreover parameters like crystallite size (L), interplanar distance (d), micro strain (?), dislocation density (?) and distortion parameters (g) were evaluated from XRD data using Schrerrer and other equations for the photoadduct.

This study investigated the impact of dredging on the physicochemical, and microbial properties of Oyibo River in Ehime Mbano, Imo State, Nigeria. This study was carried out during the raining season (August) and dry season (January). Samples of water were collected using standard methods (collection from downstream to upstream). pH, temperature, flow rate, depth, width, conductivity, total dissolved solids (TDS), Dissolved Oxygen (DO) were analyzed in–situ using digital pH meter, thermometer, current meter, calibrated meter stick, measuring tape, Conductivity/ TDS meter and Dissolved Oxygen meter respectively. Other parameters (microbial, and some physicochemical parameters) were carried out ex-situ using existing standard methods. The river in the raining season had an average depth range of 1.60±0.00-2.00±0.00m; width range of 6.20±0.00-15.00±0.00m, pH, 5.60±0.00-7.15±0.05; temperature, 27.20±0.00 - 29.30±0.000C and flow rate range of 0.00±0.00 - 0.40±0.00 m/s. In the dry season the depth ranged from 0.08 - 0.50m; width, 6.20 - 11.40; pH, 2.8±0.00 - 5.50±0.00; temperature, 25.80±0.00 - 27.90±0.00?C; and flow rate 6.20 - 11.40m. The water samples during the rainy season were found to be turbid (17.00±.0.00-48.44±0.00 NTU) while Chemical Oxygen Demand (COD), Biochemical Oxygen Demand (BOD), dissolved oxygen (DO), conductivity, total hardness and total alkalinity were within the Federal Ministry of Environment permissible limits. Statistically, there was no significant difference between the results in the raining season and dry season (p?0.05). Microbial values exceeded their permissible limits with Bacillus spp, Staphylococci spp, Enterococcus spp, Psendomonas spp, Micrococcus spp, Salmonella spp and Enterobacter spp present in the water samples across the river points. Asperigillus fumigatus, Asperigillus niger, Penicillum spp, Drechslera spp, Candida spp, Penicillum spp, Asperigillus niger, Asperigillus fumigatus and Paecilomyces spp were among the fungi isolates from water and sediments samples. During the dry season, COD, BOD, DO, Total Hardness & Total chloride were observed to be within the permissible limits. No growth was observed for the Total Fecal Coliform Count while Total Bacteria count, Total Coliform count and Total Fungi Count were observed to be above permissible limits. Organisms observed in the surface water include, Streptococcus spp, Klebsiella spp, Yersinia spp, Vibrio spp, Bacillus spp, Yersinia spp, Pseudomonas spp, Vibrio spp and Citrobacter spp. Values of the sediment parameters were higher in the dry season. Asperigillus niger, Candida spp, Asperigillus fumigatus, Penicillum spp, Asperigillus fumigatus and Paecilomyces spp were the fungi that were observed in the surface water while Candida spp, Penicillum spp, Dreschela spp, Penicillum spp and Asperigillus fumigatus were observed in the sediment samples during the dry season. Some of the parameters are not within the federal Ministry of Environment (FMEnv.) acceptable limits, hence, the River in this study is not portable for drinking

Sulphate-rich acid mine drainage (AMD) generated by some mining industries is a serious issue to water treatment industry operators and the South African government. The aim of carrying this study is to reduce if not completely remove the high concentration of sulphate in the AMD by using reagent grade chemical barium chloride. Precipitation technique was used to synthesize barium sulphate from sulphate-rich acid mine water with the addition of barium chloride solution to form a white precipitate. The precipitate formed was characterized using analytical techniques such as X-ray diffraction (XRD), scanning electron microscopy (SEM), high resolution transmission electron microscopy (HTREM), Fourier transform infra-red (FTIR) spectroscopy and Brunauer-Emmett-Teller (BET). Synthesized barium sulphate was compared with reagent grade synthesized BaSO4 was characterize with XRD to identify the mineral phase, while SEM and HRTEM revealed similar morphology and the BET surface area for both synthesized and reagent grade barium sulphate crystals were determined to be 7.7 m2/g and 68 m2/g. The results from this study shows that sulphate in the acid mine water can be used to synthesize barium sulphate.

Chlamydia trachomatis is an obligate intracellular bacterium associated with sexually transmitted genital tract infection in humans and cause genital infection in both men and women. It is one among the major causes for complications in pregnancy. In this study prevalence of the C trachomatis genital infection among the pregnant women of reproductive age group has been studied. A total of 300 pregnant women with symptomatic genital infections were included in this study. Blood samples were collected from them and screened for Chlamydia trachomatis specific IgM antibodies by Micro Immuno Fluorescence (MIF). The results showed an overall 16% prevalence of C trachomatis infection among the various age groups of the pregnant women . From this informations, we conclude that the C.trachomatis infection is quite prevalent among the pregnant women belongs to our area - south India. Hence, we suggest the need of implementing the screening programme as mandatory for the detection of Chlamydial genital infection among pregnant women, in view of preventing the adverse effects related to pregnancy outcomes.

In-service training of teaches is a systematic process and wide infrastructure that requires extensive communication to execute any program in order to ensure maximum involvement of all those who are associated with educational enterprise, one or the other way like teachers, administrators, curriculum-developers, research workers, teacher trainers, specialists, etc. In-service training programs actually provide an opportunity to those who are trained but in experienced. This type of training facilitates professional learning and helps teachers to abreast themselves with the upcoming knowledge, educational developments and innovations but unfortunately there are numerous problems that interrupt when these programs are intended to commence. So in order to overcome expected problem, a model has been suggested in this article that will conducive for resolving problems of in-service teacher training and it will provide an insight in order to certify successful and more beneficial planning of such programs. Improvement in any education system can only be made when teachers are given upmost priority and their in-service training is considered mandatory in order to meet new challenges. In brief to deal with modern challenges, teachers’ professional development or in service training is imperative, as said by John Cotton Dana: “Who dares to teach must never cease to learn”.

In this article computational study by using DFT on Exalite – 392A is reported. The quantum mechanical analysis of various energies of molecule in ground state was calculated by using DFT technique. The effect of the solvent on optimized geometry, Mulliken charge distribution in ground and excited state were analysed. With the help of computed highest occupied molecular orbital (HOMO) - lowest unoccupied molecular orbital (LUMO) gap of Exalite – 392A in different medium, we can analysed solvation energy, ionization potential, electron affinity, chemical hardness, electron chemical potential, electronegativity and global electrophilic. UV-Vis spectrum was obtained by using TDDFT technique. The total electron density (TED), potential distribution over molecule by electrostatic potential (ESP) positions of molecule were obtained from molecular electrostatic potential (MEP) and frontier molecular orbitals (FMO) simulated. Main objective is to determine their electronic, thermodynamic and spectroscopic parameters on the basis of the DFT quantum chemical studies and also we are studying the effect of solvent and solute-solvent interactions. This molecule is helpful in designing of lasers.

Ureterosigmoidostomy has been widely used as a surgical urinary diversion technique. However, it can be the cause of many infectious, metabolic, or tumoral complications. We report a case of a patient who developed a rectosigmoid carcinoma at the site of a previous ureterosigmoidostomy after a long latent period.

Blends of cassava flour and partially defatted soybean meal were processed in a single-screw extruder. Experimental design with feed moisture (16, 20, 24 g water/100g flour), amount of soybean (10–30 g soybean/100g flour) and barrel temperature (120, 145, 170 oC) as independent variables leading to 17 combinations that were studied using Box-Behnken Design of response surface methodology to investigate the effect of these input variables on extruder system parameters, namely: product temperature, residence time, machine throughput and specific mechanical energy. The recorded values for all responses varied from 121 to 175 oC, 42.34 to 65.11 seconds, 3.65 to 4.56 kg/hr and 159.01 to 213.63kJ/kg, respectively. Second-order polynomials were used to model the extruder responses as a function of process variables. All three variables affected responses significantly especially their linear terms (p<0.05) and all the fitted models were significant (p<0.05) and correlated well with experimental data (R2 ? 0.934).

This paper presents the concept of Responsive Web Design and Development for Web Applications meant to be present on screens of different resolution like desktop, tablets and mobile phones. It brings into light some of the features of Web Application and Native Applications and how the difference between them is narrowing down. A brief look into the traditional form of web designing is also mentioned in order to understand its drawbacks. It also focuses on the concepts of Media Queries and Twitter Bootstrap, a new front end framework. It overall brings into limelight the new perspective of Web Development so as to make it more flexible and efficient.