84 research outputs found

    An Inverted Index Structure for the Social Image Dataset To Accelerate the Searching Process

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    We suggest a social re-ranking system for tag-based image recovery with the thought of image’s bearing and variety. We purpose at re-ranking images giving to their pictorial information, semantic information and social clues. The original results embrace images underwrote by diverse social users. Regularly each operator underwrites several images. First we type these images by inter-user re-ranking. Users that have higher involvement to the prearranged query rank complex. Then we chronologically instrument intra-user re-ranking on the ranked user’s image set, and first the most appropriate image from each user’s image set is selected. These certain images unite the final retrieved results. We form an inverted index structure for the societal image dataset to fast-track the incisive route

    A Concrete Construction of RS IBF In Defined Security Model

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    We propose a thought called revocable-storage identity-based encryption (RS-IBE), which can give the forward/in reverse security of ciphertext by presenting the functionalities of client repudiation and ciphertext refresh all the while. Besides, we exhibit a solid development of RS-IBE, and demonstrate its security in the characterized security model. The execution examinations demonstrate that the proposed RS-IBE scheme has focal points as far as usefulness and productivity, and in this way is plausible for a pragmatic and financially savvy data sharing framework. At long last, we give usage consequences of the proposed plan to show its practicability

    A new distributed storage evaluating with irrefutable outsourcing of key upgrades

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    In this worldview, key updates can be securely redistributed to some approved gathering, and along these lines the key-refresh trouble on the customer will be kept negligible. In particular, we use the third party auditor (TPA) in many existing open evaluating structures, let it assume the job of approved gathering for our situation, and make it accountable for both the capacity reviewing and the protected key updates for key-introduction obstruction. In our structure, TPA just needs to hold a scrambled variant of the customer's secret key, while doing all these oppressive errands in the interest of the customer. The customer just needs to download the scrambled secret key from the TPA while transferring new documents to cloud. Plus, our structure additionally outfits the customer with ability to additionally confirm the legitimacy of the scrambled secret keys given by TPA

    IMAGE SUPER RESOLUTION TECHNIQUE BASED ON WAVELET DECOMPOSITION IMPLEMENTED ON BEAGLE BOARD XM

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    The suggested formula uses bilinear interpolation to enlarge the reduced resolution image by two occasions. Then, the interpolated image continues to be decomposed by DWT into different sub bands. Our prime frequency sub bands acquired by SWT from the input low resolution image are now being incremented in to the DWT decomposed high frequency sub bands to be able to correct the believed coefficients. In parallel, the DWT decomposed low frequency sub band image can also be interpolated individually. Within the real life, there are a number of applications requiring high definition (HR) images in remote sensing, medicine, military information acquisition, multimedia, etc. Due to the expensive and physical limitations from the acquisition hardware, the reduced resolution (LR) images are utilized frequently. So, super resolution (SR) restoration is definitely an emerged solution permitting to create one or some HR images from the sequence of LR images. Quantitative and qualitative experiments for that introduced method demonstrated great brilliance in acquiring high definition images rich in PSNR far better visual quality. Within this paper, a singular SR restoration formula according to wavelet decomposition was suggested and lastly continues to be implemented on OMAP3530 platform, demonstrating the potency of the renovation of SR images

    Nonproteolytic Roles of 19S ATPases in Transcription of CIITApIV Genes

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    Accumulating evidence shows the 26S proteasome is involved in the regulation of gene expression. We and others have demonstrated that proteasome components bind to sites of gene transcription, regulate covalent modifications to histones, and are involved in the assembly of activator complexes in mammalian cells. The mechanisms by which the proteasome influences transcription remain unclear, although prior observations suggest both proteolytic and non-proteolytic activities. Here, we define novel, non-proteolytic, roles for each of the three 19S heterodimers, represented by the 19S ATPases Sug1, S7, and S6a, in mammalian gene expression using the inflammatory gene CIITApIV. These 19S ATPases are recruited to induced CIITApIV promoters and also associate with CIITA coding regions. Additionally, these ATPases interact with elongation factor PTEFb complex members CDK9 and Hexim-1 and with Ser5 phosphorylated RNA Pol II. Both the generation of transcripts from CIITApIV and efficient recruitment of RNA Pol II to CIITApIV are negatively impacted by siRNA mediated knockdown of these 19S ATPases. Together, these results define novel roles for 19S ATPases in mammalian gene expression and indicate roles for these ATPases in promoting transcription processes

    Suppression of σ-phase in nanocrystalline CoCrFeMnNiV high entropy alloy by unsolicited contamination during mechanical alloying and spark plasma sintering

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    CoCrFeMnNiV high entropy alloy (HEA) exhibits a high content of σ-phase (70 vol%) when produced by casting route. In the present work, a combination of mechanical alloying (MA) and spark plasma sintering (SPS) has been used to synthesize nanocrystalline CoCrFeMnNiV HEA where the formation of σ-phase has been avoided. Electron microscopy and atom probe tomography analysis indicated the formation of FCC structured HEA matrix along with (Cr,V) carbide (15 vol%) precipitation, without the presence of σ-phase in SPS processed alloy. Gibbs energy vs composition (G-x) diagrams of binary subsystems and possible carbides and oxides substantiate the absence of σ-phase during SPS of CoCrFeMnNiV alloy. Thus, the unsolicited contamination during MA-SPS route proves beneficial in suppressing the complex phase formation. © 2020 Elsevier B.V

    Gene Expression Signature of DMBA-Induced Hamster Buccal Pouch Carcinomas: Modulation by Chlorophyllin and Ellagic Acid

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    Chlorophyllin (CHL), a water-soluble, semi-synthetic derivative of chlorophyll and ellagic acid (EA), a naturally occurring polyphenolic compound in berries, grapes, and nuts have been reported to exert anticancer effects in various human cancer cell lines and in animal tumour models. The present study was undertaken to examine the mechanism underlying chemoprevention and changes in gene expression pattern induced by dietary supplementation of chlorophyllin and ellagic acid in the 7,12-dimethylbenz[a]anthracene (DMBA)-induced hamster buccal pouch (HBP) carcinogenesis model by whole genome profiling using pangenomic microarrays. In hamsters painted with DMBA, the expression of 1,700 genes was found to be altered significantly relative to control. Dietary supplementation of chlorophyllin and ellagic acid modulated the expression profiles of 104 and 37 genes respectively. Microarray analysis also revealed changes in the expression of TGFβ receptors, NF-κB, cyclin D1, and matrix metalloproteinases (MMPs) that may play a crucial role in the transformation of the normal buccal pouch to a malignant phenotype. This gene expression signature was altered on treatment with chlorophyllin and ellagic acid. Our study has also revealed patterns of gene expression signature specific for chlorophyllin and ellagic acid exposure. Thus dietary chlorophyllin and ellagic acid that can reverse gene expression signature associated with carcinogenesis are novel candidates for cancer prevention and therapy

    Human protein reference database—2006 update

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    Human Protein Reference Database (HPRD) () was developed to serve as a comprehensive collection of protein features, post-translational modifications (PTMs) and protein–protein interactions. Since the original report, this database has increased to >20 000 proteins entries and has become the largest database for literature-derived protein–protein interactions (>30 000) and PTMs (>8000) for human proteins. We have also introduced several new features in HPRD including: (i) protein isoforms, (ii) enhanced search options, (iii) linking of pathway annotations and (iv) integration of a novel browser, GenProt Viewer (), developed by us that allows integration of genomic and proteomic information. With the continued support and active participation by the biomedical community, we expect HPRD to become a unique source of curated information for the human proteome and spur biomedical discoveries based on integration of genomic, transcriptomic and proteomic data

    Mutations in FRMD7, a newly identified member of the FERM family, cause X-linked idiopathic congenital nystagmus

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    Idiopathic congenital nystagmus (ICN) is characterised by involuntary, periodic, predominantly horizontal, oscillations of both eyes. We identified 22 mutations in FRMD7 in 26 families with X-linked idiopathic congenital nystagmus. Screening of 42 ICN singleton cases (28 male, 14 females) yielded three mutations (7%). We found restricted expression of FRMD7 in human embryonic brain and developing neural retina suggesting a specific role in the control of eye movement and gaze stability
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