518 research outputs found

    Abstractive Summarization with Efficient Transformer Based Approach

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    One of the most significant research areas is how to make a document smaller while keeping its essential information because of the rapid proliferation of online data. This information must be summarized in order to recover meaningful knowledge in an acceptable time. Text summarization is what it's called. Extractive and abstractive text summarization are the two types of summarization. In current years, the arena of abstractive text summarization has become increasingly popular. Abstractive Text Summarization (ATS) aims to extract the most vital content from a text corpus and condense it into a shorter text while maintaining its meaning and semantic and grammatical accuracy. Deep learning architectures have entered a new phase in natural language processing (NLP). Many studies have demonstrated the competitive performance of innovative architectures including recurrent neural network (RNN), Attention Mechanism and LSTM among others. Transformer, a recently presented model, relies on the attention process. In this paper, abstractive text summarization is accomplished using a basic Transformer model, a Transformer with a pointer generation network (PGN) and coverage mechanism, a Fastformer architecture and Fastformer with pointer generation network (PGN) and coverage mechanism. We compare these architectures after careful and thorough hyperparameter adjustment. In the experiment the standard CNN/DM dataset is used to test these architectures on the job of abstractive summarization

    An Improved Method for Chemical Devitellinization of X-gal Stained Drosophila Embryos

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    In Drosophila developmental biological studies, X-gal staining is commonly employed to study the spatio-temporal expression of the lacZ reporter gene in the transformed flies or their embryos. Study of the lacZ pattern in embryos often suffers from the lack of an efficient and high yieldirrg technique for devitellinization of X-gal stained embryos. Devitellinization techniques employed during antibody staining, in situ hybridization or embryonic cuticular preparations generally do not give satisfactory results when used for similar purpose in X-gal stained embryos. This results in the flaky appearance of the blue stain. We present here an improved chemical devitellinization technique which gives a high yield of devitellinized embryos and a better resolution of the X-gal staining pattern. ... We present here a chemical devitellinization technique for X-gal stained embryos where the major hurdles of time consumption, low yield of devitellinized embryos, chances of loss of morphology of the embryos or quality of stain have been overcome

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    Simulation of a high voltage gain dc-dc converter integrating with coupled inductor and two voltage multiplier cells

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    In this paper, a high voltage gain dc-dc converter is presented for renewable energy applications. This paper develops step up converter which consists of two voltage multiplier cells with coupled inductor in order to achieve the multiple voltage requirements with high voltage gain. And also two capacitances are provided for charging when the device is under turned-off condition, by utilizing the stored energy levels in the coupled inductor which can enhances the voltage transfer capability levels of the system The voltage imbalance levels are compensated at main power switch. The implemented model operates with low resistance RDS(ON) at main power switch which can reduce the switching losses. The developed simulink models are tested and verified within the MATLAB/SIMULINK with multiple output functions with high voltage gains

    Patterning Defects in Silkworm Embryos Analysed through Cuticle Preparations

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    The mulberry silkworm, Bombyx mori, a holometabolous lepidopteran insect, has a metameric body plan. Due to its functional adaptation, B. mori presents some unique deviations in its pal/ern from the evolutionarily advanced dipteran insect, Drosophila melanogaster. Previous studies on mutant phenotype analysis in B. mori have been carried out in late stages of larval development. Here we employ, the cuticle preparation approach during embryonic development to study morphological landmarks associated with B. mori, Eri, another race a/silkworm, and pattern defects associated with Ekp mutant of B.mori. The homeotic mutant Ekp, generates ectopic abdominallegs, a feature previously documented only during larval development. Using cuticle preparation approach the patterning defects of extra abdominal legs of Ekp mutation could be detected as early as 7.5-day-old embryo. This approach can be exploited to study patterning defects in B. mori mutants affecting early development

    Study of coronary artery calcium by multi-slice spiral CT as a tool for high risk cardiovascular screening

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    Background: Strong relationship has been demonstrated between the presence of occlusive CAD and coronary artery calcification (CAC) detected at autopsy, fluoroscopy and computed tomography (CT scan). CT scan quantifies the relative burden of CAC deposits as a marker of atherosclerosis. We explored utility of multi-slice spiral CT scan for detection of CAC as a tool for screening in asymptomatic high-risk cases above 40 years of age.Methods: Fifty-eight asymptomatic cardiovascular high-risk cases were included as per selection criteria. Detailed clinical history was recorded in every case regarding age, sex, history of risk factors for CAD like systemic hypertension, diabetes mellitus, smoking and family history of CAD. Every case was evaluated for fasting and postprandial blood sugar and fasting lipid profile. Body mass index (BMI) was calculated. An ECG was also recorded. Coronary artery calcium was estimated in each patient by multi -slice spiral CT scan. Fifty age and gender matched consenting participants were enrolled as controls and comparisons drawn.Results: Out of 58 cases scanned, 41 had no detectable CAC by multi-slice CT scan whereas in 17 cases (29.2%), calcium was detected. Mean CAC score was observed to increase as number of risk factors increased.Conclusions: Multi-slice CT scan is a useful tool for detection of coronary artery calcium (CAC) when utilised for high risk screening in older adults having one or more known cardiovascular risk factors

    A case report: primary CNS angiitis

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    The primary angiitis of the central nervous system (PACNS) is an entity with a very low incidence and prevalence. It affects small and medium sized arteries of the brain parenchyma, spinal cord and leptomeniges resulting in CNS dysfunction. It is defined by inflammation of the cerebral vasculature without angiitis of other organ. Its clinical manifestations are very heterogeneous and make clinical diagnosis difficult. In most cases, a brain biopsy is required. Only the clinical suspicion and the ability to recognize the possible clinical and imagenological patterns of presentation make an accurate diagnosis possible.We hereby report a case of Primary angiitis of CNS in 35 year old right handed male who presented with ischemic stroke with Left Hemiplegia. The diagnosis of PACNS was made after ruling out most of the causes of secondary CNS angiitis
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