320 research outputs found

    A Case Study on Enterprise Content Management using Agile Methodology

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    Every organization has the need to create, classify, manage and archive information so that it is accessible when they need it. The amount of data or information needed for an organization to build their business and for them to be more positive in today’s business world is increasing exponentially, which also includes unstructured data or unstructured content. It is not appropriate only to “manage” content, but whether the correct version of the data or document or record can be accessed. Enterprise Content Management is an efficient collection and planning of information that is to be used by a very particular type of audience for pure business objectives. It is neither a single type of technology nor a process, it is a combination of strategies, methods and tools used to preserve, store and deliver information supporting key enterprise processes through its entire lifecycle. This research is classified into a case study research because it takes a particular focus on a certain area, i.e., the ECM implementation in XYZ organization where I completed my summer internship this year. Besides research, this study also helped me understand the in-depth implementation of ECM in an enterprise which directly depicts the working environment and methodologies in XYZ

    Dental Biometrics: Human Identification Using Dental Radiograph

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    Biometric is the science and innovation of measuring and analyzing biological information.In information technology, biometric refers to advancements that measures and analyzes human body attributes,for example,DNA, eye retinas, fingerprints and irises,face pattern,voice patterns,and hand geometry estimations,for identification purposes.The primary motivation behind scientific dentistry is to distinguish expired people,for whom different method for recognizable proof(e.g.,unique finger impression,face,and so on.)are not accessible.Dental elements survives most of the PM events which may disrupt or change other body tissues,e.g. casualties of motor vehicles mishaps,fierce violations,and work place accident,whose bodies could be deformed to such a degree,that identification even by a family member is neither desirable nor reliable.Dental Biometric utilises dental radiographs to distinguish casualties.The radiographs procured after the casualty's demise are called post-mortem radiograph and the radiograph obtained when the casualty was alive is called ante-mortem radiograph.The objective of dental biometric is to match the unidentified individual's post-mortem radiograph against a database of labelled antemortem radiograph.This thesis proposes a novel method for the contour extraction from dental radiographs.The proposed algorithm of Active Contour Model or the Snake model is used for this purpose. A correctly detected contour is essential for proper feature extraction.This thesis only works on the contour detection.The method has been tested on some radiographs images and is found to produce desired output.However,the input radiograph image may be of low quality,may suffer a clear separation between two adjacent teeth.In that case the method will not be able to produce a satisfactory result.There is a need of pre-processing(e.g. contrast enhancement) before the active contour detection model can be applie

    Nanoindentation characterization of clay minerals and clay-based hybrid bio-geomaterials

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    Layered hydrous aluminosilicates are key constituent minerals in rocks, soils, and other parts of the Earth crust. Understanding mechanical properties of these aluminosilicates is crucial for seismic study, stability of parent rocks and geomaterials, and for geophysical subsurface exploration. Recently, growing prospects of clay based nanocomposites have renewed further interest in understanding the fundamental elastic and plastic properties of hydrous aluminosilicates. Their distinct, nanoscale layered crystal structure is known to result in anisotropic responses to loading, however, owing to their tiny sizes; it is a significant challenge to determine the anisotropic properties. There is a little data available in the literature on the elastic and plastic properties of clays and clay-based geomaterials. This Ph.D. research work has undertaken the novel approach to study mechanical properties of geomaterials using a pioneering nanomechanical testing method, nanoindentation, to probe the elastic and plastic properties at nano/micro scale. Genesis of these nanomechanical properties are analyzed in the light of microstructures, interatomic bonds, mineralogical and chemical composition. A nanoindentation study of muscovite mica revealed highly anisotropic behavior. Both elastic and plastic anisotropy exist for indentation normal and perpendicular to the basal plane. Nano-mechanical behavior of the well-ordered, nanocrytalline clay minerals is, mainly, governed by generation and storage of dislocations, formation and annihilation of kink bands and intermittent kink bands. Interpretations of indentation test based on continuum mechanics and gradient plasticity models, therefore, give satisfactory result. On the other hand, chemical, morphological, microstructural and structural characterization of a hybrid clay-lime-starch bio nanocomposite material revealed highly heterogeneous, amorphous and multi-phase matrix. Statistical analysis of the massive volume of data obtained using grid indentation technique revealed that this matrix is composed of five distinct mechanical phases. Thus, this study proposes that slow and weak pozzolanic reaction between clay and lime produces cementitious binder network consisting of C-S-H phase. Interaction of the biopolymer (sticky rice) with clay and C-S-H resulted in intercalated nanocomposites that have superior mechanical and barrier properties. Clay, sand, and silt particles act as active fillers in this composite, whereby forming a dense and compact mass, which renders durability and toughness to this hybrid composite

    Evaluation of consolidation parameters of cohesive soils using PCPT method

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    The piezocone penetration test (PCPT) has emerged as most widely used in situ method for obtaining soil profile as well as physical properties. The PCPT method provides three independent and nearby continuous measurements with the depth; they are: tip stress (qc), sleeve friction (fs) and pore pressure (u1, u2, or u3). These measurements have been successfully used to correlate various soil properties such as undrained shear strength, unit weight and consolidation parameters. This study presents the evaluation of the PCPT interpretation methods for their capability to reasonably estimate the consolidation parameters namely constrained modulus, overconsolidation ratio and vertical coefficient of consolidation (cv) of cohesive soils in Louisiana. Statistical analyses were conducted to evaluate current interpretation methods and to explore new correlations. Test data collected previously from seven sites in Louisiana were used for this. Settlement analysis and monitoring results from five different project sites were used for field verification of PCPT correlations. User friendly Visual Basic program was developed to facilitate the analyses of PCPT data and estimate of magnitude and time rate of settlement under the embankment loading

    Antidepressants-a possibly risk factor for cataract development: a cross-sectional study

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    Background: Few studies have reported the role of antidepressants as cataractogenic in humans.Methods: It’s a hospital based descriptive, cross-sectional study. 45 Patients were screened for antidepressant use and diminution of vision, 6 were dropped out. 39 patients with 78 eyes were finally enrolled. They were divided into two goups i.e., Group-I, with cataract (N=53) and Group-II, without cataract (N=25). Three clusters of antidepressants were assessed e.g., SSRI, SNRI and TCA with therapeutic dose (TD) and non-therapeutic dose (NTD) range. Psychiatric illness was diagnosed on DSM-5 and severity of depression on HAM-D. Best corrected visual acuity (BCVA) was converted from Snellen units to logarithm of minimal angle of resolution (log MAR) for statistical analysis. Cataract changes in eyes were seen on slit-lamp and classified on Lens opacities classification system-III (LOCS-III) criteria.Results: A total 78 eyes of thirty-nine (39) patients were evaluated. Thirty (38.46%) and forty-eight (61.53%) eyes belonged to males and females, respectively. Mean age of males (n=7) was 41.8±2.3 years and females (n=32) 40.2±1.0 years. In Group-I, out of (N=53) eyes that developed cataract 33 were females (62.26%) as compared to males 20 (37.7%). Group -II, out of (N=25) eyes, females without cataract were 15 (60%) as compared to males 10 (40%).  Therapeutic dose (TD) of antidepressants (AD) in Group-I had more cataract 37 (69.81%) as compared to non-therapeutic dose (NTD) 16 (30.1%). Most of the eyes with cataract 35 (66.03%) had AD exposure of more than 1 year that was possibly associated with increased risk of cataract development (OR 2.10; 95% CI, 0.79-5.55). Amongst users of antidepressants, SSRI was associated with increased risk of cataract development (OR 2.4; 95% CI, 0.72–7.94) with a female preponderance (OR 1.1; 95% CI, 0.41–2.91). Maximum number of eyes 34 (64.15%) that developed cataract had BCVA of ≥6/12 and minimum of 2 (3.77%) eyes had BCVA of ≤6/36. LOCS-III revealed 38 (71.69%) eyes (71.69%) having peripheral cortical cataract and 15 (28.30%) posterior sub-capsular cataract.Conclusions: There is a possible risk of association of cataract amongst user of antidepressants. The AD use of more than 1 year or longer had increased risk for development of cataract with a female preponderance. The highest risk was observed in the users of SSRI as compared to SNRI and TCA. Treatment exposure with antidepressant was longer for mild depression having more than two episodes

    Source Behavior for ATM ABR Traffic Management: An Explanation

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    The Available Bit Rate (ABR) service has been developed to support data applications over Asynchronous Transfer Mode (ATM) networks. The network continuously monitors its traffic and provides feedback to the source end systems. This paper explains the rules that the sources have to follow to achieve a fair and efficient allocation of network resources.Comment: IEEE Communications Magazine, November 1, 1996, vol 34, no11, pp50-5
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