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Search Results: 1 - 10 of 218 matches for " Abhijan Maity "
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A prospective randomised, controlled clinical trial comparing medial and lateral entry pinning with lateral entry pinning for percutaneous fixation of displaced extension type supracondylar fractures of the humerus in children
Abhijan Maity, Debasish Saha, Debasis Roy
Journal of Orthopaedic Surgery and Research , 2012, DOI: 10.1186/1749-799x-7-6
Abstract: The study was a single center, prospective, randomized controlled clinical trial. Between October 2007 and September 2010, 160 patients who satisfy the inclusion and exclusion criterias were enrolled in the study, with 80 patients in each group. All the percutaneous pinning was done according to a uniform standardized technique. The patients were re-evaluated as outpatients at three weeks, six weeks and three months after the surgery. At three months follow-up visit, following informations were recorded as outcome measures: (i) Carrying angle (deg) (ii) passive range of elbow motion (deg) (iii) Flynn's criteria for grading, based on the loss of carrying angle and loss of total range of elbow motion. (iv) Baumann angle (deg) (v) Change in Baumann angle (deg) between the Intraoperative radiographs after the surgery and radiographs at three months follow-up visit (vi) loss of reduction grading, based on the change in the Baumann angle.There were no significant differences between the two groups with regard to base-line characteristics, withdrawals and complication rate. At three months follow-up visit, patients were evaluated by recording the various outcome measures. There were no significant differences between the two groups with regard to the various outcome measures such as carrying angle, passive range of elbow motion, Flynn grading, Baumann angle, change in the Baumann angle and loss of reduction grading.If a uniform standardized operative technique is followed in each method, then the result of both the percutaneous fixation methods will be same in terms of safety and efficacy.Supracondylar fractures of the humerus are the most common fractures about the elbow in children [1,2]. According to Boyd and Altenberg [3], these fractures account for 65.4% of upper extremity fractures in children. Gartland [4] proposed a classification for these fractures: type I, Undisplaced; type II, displaced with the posterior cortex intact; and type III, completely displaced with
Architecture Supporting Discovery and Management of Heterogeneous Sensors for Smart System Using Generic Middleware
Soma Bandyopadhyay,Abhijan Bhattacharyya
International Journal of Computer Networks & Communications , 2012,
Abstract: This Smart environments, starting from smart home to more complex one like smart city, demand efficientinteroperation mechanism among different heterogeneous sensors including the discovery and themanagement of these devices. The diverse domains of applications also require interoperation amongthemselves. The middleware plays a key role to achieve this interoperation. The middleware is alsoresponsible for providing abstractions to the application interfaces and device sensing. In the currentarticle middleware architecture along with a method for efficient device interoperation by generating ageneric device attributes (GDA) structure is presented. The middleware performs semantic analysis onthe content of the device attributes while performing the discovery and managing the device. It supports,efficient way of sensor discovery, management and posting of sensed data. Smart irrigation and firmingenvironment is considered as a use case here. The presented architecture is modular, based on objectoriented concept and generic in nature. This can be further extended for any smart system. A futureresearch scope of the proposed architecture is also discussed while concluding the article.
Probiotics and human health: Synoptic review.
TK Maity, AK Maity
African Journal of Food, Agriculture, Nutrition and Development , 2009,
Abstract: The development of probiotic, functional foods aims to “kill two birds with one stone,” which is accomplished by providing a microbial stimulus to the host immune system by means of beneficial live microorganism cultures that are characteristic of the healthy, human gut microflora. Several probiotic preparations seem to have promise in prevention or treatment of various conditions. Probiotic bacteria reinforce the different lines of gut defense, which are immune exclusion, immune elimination, and immune regulation. They stimulate non-specific host resistance to microbial pathogens, thereby aiding in pathogen eradication. Best documented clinical application of probiotics is in the treatment of acute diarrhea. In humans, documented effects were reported for the alleviation of intestinal inflammation, normalization of gut mucosal dysfunction, and down-regulation of hypersensitivity reactions. The efficacy of probiotics in acute enteric infections and post-antibiotic syndromes is now established and there is emerging evidence for a role in alleviation of necrotizing enterocolitis, irritable bowel syndrome, and some forms of inflammatory bowel disease. Probiotics are gaining importance because of their innumerable benefits, e.g. treating lactose intolerance, hypercholesterol problem, cardiac diseases and managing cardiac problems like atherosclerosis and arteriosclerosis. However, adequate information by which the consumer and health professional can judge the efficacy and safety of retailed probiotics is lacking. Probiotic products have not been subjected to large-scale trials of efficacy that are used in the pharmaceutical industry. Without these trials and subsequent approval by fastidious regulatory agencies such as the FDA (USA), probiotics continue to languish in the self-care health market. However, the future is bright; enhanced understanding of the molecular details of host’s microflora flora interactions within the gut promises to yield new therapeutic targets and the potential to move from “bugs to drugs”. With the current focus on disease prevention and the quest for optimal health at all ages, the probiotics market potential is enormous. Health professionals are in an ideal position to help and guide their clients toward appropriate prophylactic and therapeutic uses of probiotics that deliver the desired beneficial health effects.
Multistep-ahead River Flow Prediction using LS-SVR at Daily Scale  [PDF]
Parag P. Bhagwat, Rajib Maity
Journal of Water Resource and Protection (JWARP) , 2012, DOI: 10.4236/jwarp.2012.47062
Abstract: In this study, potential of Least Square-Support Vector Regression (LS-SVR) approach is utilized to model the daily variation of river flow. Inherent complexity, unavailability of reasonably long data set and heterogeneous catchment response are the couple of issues that hinder the generalization of relationship between previous and forthcoming river flow magnitudes. The problem complexity may get enhanced with the influence of upstream dam releases. These issues are investigated by exploiting the capability of LS-SVR–an approach that considers Structural Risk Minimization (SRM) against the Empirical Risk Minimization (ERM)–used by other learning approaches, such as, Artificial Neural Network (ANN). This study is conducted in upper Narmada river basin in India having Bargi dam in its catchment, constructed in 1989. The river gauging station–Sandia is located few hundred kilometer downstream of Bargi dam. The model development is carried out with pre-construction flow regime and its performance is checked for both pre- and post-construction of the dam for any perceivable difference. It is found that the performances are similar for both the flow regimes, which indicates that the releases from the dam at daily scale for this gauging site may be ignored. In order to investigate the temporal horizon over which the prediction performance may be relied upon, a multistep-ahead prediction is carried out and the model performance is found to be reasonably good up to 5-day-ahead predictions though the performance is decreasing with the increase in lead-time. Skills of both LS-SVR and ANN are reported and it is found that the former performs better than the latter for all the lead-times in general, and shorter lead times in particular.
On the Application of Probabilistic Hydrometeorological Simulation of Soil Moisture across Different Stations in India  [PDF]
Sarit Kumar Das, Rajib Maity
Journal of Geoscience and Environment Protection (GEP) , 2014, DOI: 10.4236/gep.2014.23021
Abstract:

An application of a proposed hydrometeorological approach for probabilistic simulation of soil moisture is carried out. The time series of in-situ soil moisture and meteorological variables at monthly scale from a few monitoring stations having different soil-hydrologic properties across India are utilized. Preliminary investigation with both precipitation and near-surface air-tempera- ture as meteorological variables to establish that the strength of association between soil moisture and precipitation is more significant as compared to that between soil moisture and temperature. Precipitation-based probabilistic estimation of soil moisture using the proposed hydrometeorological approach is tested with in-situ observed soil moisture, CPC model output and with soil moisture data of the Climate Change Initiative (CCI) project. The parameter of the developed model is linked to the soil-hydrologic characteristics through Hydrologic Soil Group (HSG) classification. Higher values of model parameter (dependence parameter (θ) for the selected copula) correspond to HSG A and B having higher soil porosity, whereas, lower values correspond to HSG B and C having lower soil porosity.

Domain walls in Born-Infeld-dilaton background
Debaprasad Maity
Physics , 2008, DOI: 10.1103/PhysRevD.78.084023
Abstract: We study the dynamics of domain walls in Einstein-Born-Infeld-dilaton theory. Dilaton is non-trivially coupled with the Born-Infeld electromagnetic field. We find three different types of solutions consistent with the dynamic domain walls. For every case, the solutions have singularity. Further more, in these backgrounds, we study the dynamics of domain walls. We qualitatively plot various form of the bulk metrics and the potential encountered by the domain walls. In many cases, depending upon the value of the parameters, the domain walls show bouncing universe and also undergo inflationary phase followed by standard decelerated expansion.
Dynamic domain walls in Maxwell-Dilaton background
Debaprasad Maity
Physics , 2008, DOI: 10.1103/PhysRevD.78.084008
Abstract: Motivated by the well know Chamblin-Reall solutions of $n$-dimensional background spacetime in a dilaton gravity and the dynamics of a domain wall in the same backgrounds, we have tried to generalize those solutions by including electromagnetic field in the bulk. The electromagnetic field is assumed to be coupled with the scalar field in an exponential way. Under the specific relations among the various parameters in our model, we have found five different types of solutions. For every case, the solution has singularity. In these backgrounds, we have also studied the dynamics of domain wall. The energy densities which play the role of these interesting dynamics, are know to be induced from the bulk fields through Israel junction condition. In this more general background field configuration, we have again found many occasions to exist static bulk spactime consistent with the dynamic domain wall. In several cases, depending upon the values of the parameters, in the early stage of evolution, the domain wall is found to have an inflationary phase for finite period of it's proper time followed by usual decelerated expansion.
Semi-realistic Bouncing Domain Wall Cosmology
Debaprasad Maity
Physics , 2012, DOI: 10.1103/PhysRevD.86.084056
Abstract: In this paper we constructed a semi-realistic cosmological model in a dynamic domain wall framework. Our universe is considered to be a (3+1) dimensional dynamic domain wall in a higher dimensional Einstein-Maxwell-Born-Infeld background. One of our interesting outcomes from the effective Hubble equation for the domain wall dynamics is that it contains an additional component of "dark matter" which is induced from the charge of the bulk Born-Infeld gauge field. In this background spacetime we have studied the cosmological dynamics of the domain wall. In addition to the Born-Infield gauge field if we consider additional pure gauge field, a non-singular bounce happens at the early stage with a smooth transition between contracting and expanding phase.
Kinetic Gravity Braiding and axion inflation
Debaprasad Maity
Physics , 2012, DOI: 10.1016/j.physletb.2013.02.020
Abstract: We constructed a new class of inflationary model with the higher derivative axion field which obeys constant shift symmetry. In the usual axion (natural) inflation, the axion decay constant is predicted to be in the super-Planckian regime which is believed to be incompatible with an effective field theory framework. With a novel mechanism originating from a higher derivative kinetic gravity braiding (KGB) of an axion field we found that there exist a huge parameter regime in our model where axion decay constant could be naturally sub-Planckian. Thanks to the KGB which effectively reduces the Planck constant. This effectively reduced Planck scale provides us the mechanism of further lowering down the speed of an axion field rolling down its potential without introducing super-Planckian axion decay constant. We also find that with that wide range of parameter values, our model induces almost scale invariant power spectrum as observed in CMB experiments.
Stability of the L^p-Norm of the Curvature Tensor at Kahler Space Forms
Soma Maity
Mathematics , 2012,
Abstract: We consider the Riemannian functional defined on the space of Riemannian metrics with unit volume on a closed smooth manifold M given by $R_p(g) :=\int_M|R(g)|^pdvg$ where $R(g)$, $dv_g$ denote the corresponding Riemannian curvature, volume form and p is a real number greater than or equal to 2. We prove that $R_p$ restricted to the space of Kahler metrics attains its local minima at a metric with constant holomorphic sectional curvature.
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