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Search Results: 1 - 10 of 2350 matches for " Sanjay Dasari "
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An Economic Analogy to Electrodynamics  [PDF]
Sanjay Dasari, Anindya Kumar Biswas
Modern Economy (ME) , 2013, DOI: 10.4236/me.2013.411078
Abstract:

In this article, we would like to find the laws of electrodynamics in simple economic systems. We identify the chief economic variables and parameters, scalar and vector. We find laws of economics interms of these variables and parameters. The laws are similar in form to the laws of symmetric electrodynamics. Moreover, we obtain Phillp’s curve, recession, Black-Scholes formula, Supply-Demand line and Cobb-Douglas production function as sample applications.

An Economic analogy to Electrodynamics
Sanjay Dasari,Anindya Kumar Biswas
Physics , 2010,
Abstract: In this note, we would like to find the laws of electrodynamics in simple economic systems. In this direction, we identify the chief economic variables and parameters, scalar and vector, which are amenable to be put directly into the crouch of the laws of electrodynamics, namely Maxwell's equations. Moreover, we obtain Phillp's curve, recession and Black-Scholes formula, as sample applications.
BICORNUATE UTERUS a€“A CASE REPORT
Madhavi Dasari
International Journal of Biomedical Research , 2013, DOI: 10.7439/ijbr.v3i9.416
Abstract: The incidence of the uterine malformations is estimated to be 3% to 5% in the general population. Abnormal fusion of the mesonefric duct (mullarian duct) during embryonic life results in a variety of congenital uterine malformations like septate uterus, unicornuate uterus, and bicoruate uterus. In the present case the patient has history of 7 miscarriages. She is 34 years old. Married life is 11 years .Due to bad obstetric history ,after through investigations ,the cause for it is diagnosed as having bicornuate uterus. It was found by histerosalpingography.
Face Recognition using Tchebichef Moments
Sri dhar Dasari,Sridhar Dasari
International Journal of Information and Network Security (IJINS) , 2012, DOI: 10.11591/ijins.v1i4.820
Abstract: In this paper, a new Face Recognition method based on Discrete orthogonal Tchebichef moments with Linear Discriminant Analysis and Probabilistic Neural Network is proposed. Tchebichef moments are having good energy compaction property that made them useful in image compression and dimensionality reduction operations. Moreover the translation and scale invariant properties of Tchebichef moments are very much useful in almost all pattern recognition applications. The proposed face recognition method consists of three steps, i) Dimensionality reduction using Tchebichef moments ii) Feature extraction using Linear Discriminant Analysis and iii) classification using Probabilistic Neural Network. Linear Discriminant Analysis selects features that are most effective for class seperability in addition to dimensionality reduction. Combination of Tchebichef moments and Linear Discriminant Analysis is used for improving the capability of Linear Discriminant Analysis when few samples of images are available. Probabilistic Neural network (PNN) is a promising tool and gives fast and accurate classification of face images. Evaluation was performed on two face data bases. First database of 400 face images from Olivetty Research Laboratories (ORL) face database, and the second database of thirteen students are taken. The proposed method gives fast and better recognition rate when compared to other classifiers. The main advantage of this method is its high speed processing capability and low computational requirements.
Epiglottic Schwannoma: A Case Report  [PDF]
Dasari Samuel Deenadayal, Dumpala Vidyasagar, Karuna  
International Journal of Otolaryngology and Head & Neck Surgery (IJOHNS) , 2014, DOI: 10.4236/ijohns.2014.35054
Abstract: Most common site of schwannoma in larynx is aryepiglottic fold and false cords. Epiglottis involvement is rare. The ultimate diagnosis is based on the histologic demonstration of characteristic spindle cells with typical nuclear palisading and positive immunohistochemistry for S-100 protein, but negative for a-smooth muscle actin, CD34, and vimentin. Effective treatment is complete excision.
A Study of Precipitation Climatology and Its Variability over Europe Using an Advanced Regional Model (WRF)  [PDF]
Hari Prasad Dasari, Venkata Srinivas Challa
American Journal of Climate Change (AJCC) , 2015, DOI: 10.4236/ajcc.2015.41003
Abstract: In recent years long-term precipitation trends on a regional scale have been given emphasis due to the impacts of global warming on regional hydrology. In this study, regional precipitation trends are simulated over the Europe continent for a 60-year period in 1950-2010 using an advanced regional model, WRF, to study extreme precipitation events over Europe. The model runs continuously for each year during the period at a horizontal resolution of 25 km with initial/ boundary conditions derived from the National Center for Environmental Prediction (NCEP) 2.5 degree reanalysis data sets. The E-OBS 0.25 degree rainfall observation analysis is used for model validation. Results indicate that the model could reproduce the spatial annual rainfall pattern over Europe with low amounts (250 - 750 mm) in Iberian Peninsula, moderate to large amounts (750 - 1500 mm) in central, eastern and northeastern parts of Europe and extremely heavy falls (1500 - 2000 mm) in hilly areas of Alps with a slight overestimation in Alps and underestimation in other parts of Europe. The regional model integrations showed increasing errors (mean absolute errors) and decreasing correlations with increasing time scale (daily to seasonal). Rainfall is simulated relatively better in Iberian Peninsula, northwest and central parts of Europe. A large spatial variability with the highest number of wet days over eastern, central Europe and Alps (~200 days/year) and less number of wet days over Iberian Peninsula (≤150 days/year) is also found in agreement with observations. The model could simulate the spatial rainfall climate variability reasonably well with low rainfall days (1 - 10 mm/days) in almost all zones, heavy rainfall events in western, northern, southeastern hilly and coastal zones and extremely heavy rainfall events in northern coastal zones. An increasing trend of heavy rainfall in central, southern and southeastern parts, a decreasing trend in Iberian Peninsula and a steady trend in other zones are found. Overall, the simulated rainfall climatology was reproduced well for the low and heavy rainfall followed by very heavy and extremely heavy rainfall in Europe and the simulation is better in the Iberian west coast, central northern Europe and Alps Mountains.
Coblation: An Alternative to CO2 Laser and Microdebrider for Laryngeal Papillomatosis  [PDF]
Dasari Samuel Deenadayal, Nabeelah Naeem, Vyshanavi Bommakanti
International Journal of Otolaryngology and Head & Neck Surgery (IJOHNS) , 2018, DOI: 10.4236/ijohns.2018.72007
Abstract: Objective: To assess the efficacy of coblation in treating laryngeal papillomatosis and its effect on post operative voice outcome. Study Design: This is a retrospective study. Setting: Tertiary referral centre. Subjects and Methods: All the patients diagnosed with laryngeal papillomatosis between January 2013 to December 2016 were included in this study. Preoperative assessment was done with rigid and flexible laryngoscopy. PRAAT software was used for voice analysis. All patients underwent coblation assisted microlaryngeal surgery. Post operatively patients were followed up at 1 week, 15 days, 1 month, 3 months and 6 months with rigid laryngoscopy. Voice analysis was repeated after 3 months to assess the improvement in voice. Results: Coblation was found to be effective in treating laryngeal papillomatosis. In our series of seven patients, three patients underwent repeat procedure with coblation for recurrence. But longterm follow up these patients did not reveal any recurrence of laryngeal papillomatosis. Voice analysis revealed a significant improvement in measures of perturbation and maximum phonation time. Conclusion: Coblation is a promising alternative to the conventional methods for the treatment of laryngeal papillomas as it can achieve satisfactory disease clearance with good voice quality.
Can Number of Sites of Obstruction Be Predicted on a Level 3 Home Sleep Study?  [PDF]
Dasari Samuel Deenadayal, Dumpala Vidyasagar, Vyshanavi Bommakanti
International Journal of Otolaryngology and Head & Neck Surgery (IJOHNS) , 2018, DOI: 10.4236/ijohns.2018.73011
Abstract: Objective: To assess the number of levels of obstruction on a level 3 home sleep study in patients with obstructive sleep apnea. Study Design: This is a prospective study. Setting: Tertiary referral centre. Subjects and Methods: All the patients with the complaints of snoring, excessive daytime sleepiness, were evaluated for OSA. Complete history was taken and a thorough clinical examination was done followed by fibreoptic nasopharyngoscopy to determine the sites of obstructions. Patients were categorised into group A and group B based on the number of levels of obstruction. A level 3 home sleep study also was done for these patients. We tried to correlate the polysomnographic variables between the two groups. Results: There was a significant difference between the two groups in a number of PSG parameters. Patients in A group had lower number of apnoeas, obstructive apnoeas, hypopneas, AHI index, flow limitation and BMI as compared to patients in group B and the difference was statistically significant. We have devised a score using 3 parameters AHI, Flow limitation with snoring and BMI, the Deenadayal’s (DDS) scoring system. The minimum scoring would be 3 and maximum score would be 6. Based on scoring the probable number of obstructions can be identified. Conclusion: Sleep study report can yield a lot of information regarding the number of levels of obstruction. A critical analysis is required while doing the same. Till date there have been no reports in literature identifying number of levels of obstruction on PSG.
Logarithmic operators in SL(2, R) WZNW model, Singletons and AdS_3/(L)CFT_2 correspondence
Sanjay
Physics , 2000, DOI: 10.1088/0305-4470/35/46/311
Abstract: We discuss the role of singletons and logarithmic operators in AdS_3 string theory in the context of AdS_3/CFT_2 correspondence.
On direct and crossed channel asymptotics of four-point functions in AdS/CFT correspondence
Sanjay
Physics , 1999, DOI: 10.1142/S0217732399001516
Abstract: We analyse the leading logarithmic singularities in direct and crossed channel limit of the four-point functions in dilaton-axion sector of type IIB supergravity on $AdS_{5}$ in AdS/CFT correspondence. Logarithms do not cancel in the full correlator in both channels.
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