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A survey and Experimental Review on Data Distribution strategies for Parallel spatial Clustering Algorithms

Journal of Computer science & Technology 2024年第3期39卷 610-636页

作者： Jagat sesh Challa Navneet Goyal amogh s.arma Nikhil sreekumar sundar Balasubramaniam Poonam Goyal Advanced Data Analytics and Parallel Technologies Laboratory Birla Institute of Technology and Science Pilani 333031India Uber New York 11101U.S.A. Computer science and Engineering Department University of MinnesotaMinneapolis 55455U.S.A.

The advent of Big Data has led to the rapid growth in the usage of parallel clustering algorithms that work over distributed computing frameworks such as MPI,MapReduce,and *** important step for any parallel clustering algorithm is the distribution of data amongst the cluster *** step governs the methodology and performance of the entire *** typically use random,or a spatial/geometric distribution strategy like kd-tree based partitioning and grid-based partitioning,as per the requirements of the ***,these strategies are generic and are not tailor-made for any specific parallel clustering *** this paper,we give a very comprehensive literature survey of MPI-based parallel clustering algorithms with special reference to the specific data distribution strategies they *** also propose three new data distribution strategies namely Parameterized Dimensional split for parallel density-based clustering algorithms like DBsCAN and OPTICs,Cell-Based Dimensional split for dGridsLINK,which is a grid-based hierarchical clustering algorithm that exhibits efficiency for disjoint spatial distribution,and Projection-Based split,which is a generic distribution *** of these preserve spatial locality,achieve disjoint partitioning,and ensure good data load *** experimental analysis shows the benefits of using the proposed data distribution strategies for algorithms they are designed for,based on which we give appropriate recommendations for their usage.

关键词： parallel data mining data distribution parallel clustering spatial locality preservation

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On-surface synthesis of Anthracene-Fused Zigzag Graphene Nanoribbons from 2,7-Dibromo-9,9′-bianthryl Reveals Unexpected Ring Rearrangements

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Precision Chemistry 2024年第2期2卷 81-87页

作者： Xiushang Xu amogh Kinikar Marco Di Giovannantonio Carlo A.Pignedoli Pascal Ruffieux Klaus Müllen Roman Fasel Akimitsu Narita Max Planck Institute for Polymer Research 55128 MainzGermany Organic and Carbon Nanomaterials Unit Okinawa Institute of Science and Technology Graduate UniversityKunigami-gunOkinawa 904-0495Japan Empa Swiss Federal Laboratories for Materials Science and Technologynanotech@surfaces Laboratory8600 DübendorfSwitzerland Institute of structure of Matter-CNR(IsM-CNR) 00133 RomaItaly Institute of Physical Chemistry Johannes Gutenberg University Mainz55128 MainzGermany Department of Chemistry Biochemistry and Pharmaceutical SciencesUniversity of Bern3012 BernSwitzerland

On-surface synthesis has emerged as a powerful strategy to fabricate unprecedented forms of atomically precise graphene nanoribbons(GNRs).However,the on-surface synthesis of zigzag GNRs(ZGNR)has met with only limited ***,we report the synthesis and on-surface reactions of 2,7-dibromo-9,9′-bianthryl as the precursor towardπ-extended *** by scanning tunneling microscopy and high-resolution noncontact atomic force microscopy clearly demonstrated the formation of anthracene-fused *** skeletal rearrangements were also observed,which could be explained by intramolecular Diels-Alder *** calculations of the electronic properties of the anthracene-fused ZGNRs revealed spin-polarized edge-states and a narrow bandgap of 0.20 eV.

关键词： On-surface synthesis Graphene nanoribbon On-surface reaction Rearrangement Edge state

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Novel mitochondrial therapies for the treatment of age-related macular degeneration

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Annals of Eye science 2021年第4期6卷 1-5页

作者： Aneesha Kalur Justin Muste Carolina C.s.Valentim amogh Iyer Rishi P.singh Center for Ophthalmic Bioinformatics Cole Eye InstituteCleveland ClinicClevelandOHUSA Cole Eye Institute-Retina Cleveland Clinic FoundationClevelandOHUSA

The purpose of this article is to review current literature and data regarding treatment options for age-related macular degeneration(AMD)related to mitochondrial *** article considers the presence of flavoprotein fluorescence as a potential biomarker to test the effectiveness of the *** focus primarily on two major mitochondrial targets,nuclear factor erythroid 2-related factor(NFE2L2)and PGC-1α,that function in controlling the production and effects of reactive oxidative species(ROs)directly in the ***-91 is an FDA approved drug that directly targets and upregulates PGC-1αin AMD cybrid cell *** neither NFE2L2 nor PGC1-αhave yet been tested in clinical trials,their effects have been studied in rodent models and offer promising ***-131,or elamipretide®,and metformin are two drugs in phase II clinical trials that focus on the treatment of advanced,non-exudative ***-131 functions by associating with cardiolipin(CL)whereas metformin targets adenosine-monophosphate protein kinase(AMPK)in the *** current results of their clinical trials are elucidated in this *** molecular targets and drugs reviewed in this article show promising results in the treatment of *** targets can be further pursued to improve and refine treatment practices of this diagnosis.

关键词： Non-exudative age-related macular degeneration(non-exudative AMD) exudative AMD mitochondrial targets mitochondrial therapy

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Comprehensive literature review on the radiographic findings, imaging modalities, and the role of radiology in the COVID-19 pandemic

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World Journal of Radiology 2021年第9期13卷 258-282页

作者： Aman Pal Abulhassan Ali Timothy R Young Juan Oostenbrink Akul Prabhakar amogh Prabhakar Nina Deacon Amar Arnold Ahmed Eltayeb Charles Yap David M Young Alan Tang subramanian Lakshmanan Ying Yi Lim Martha Pokarowski Pramath Kakodkar school of Medicine National University of Ireland GalwayGalway H91 TK33GalwayIreland Department of Computer science Yale UniversityNew HavenCO 06520United States Department of Health science Duke UniversityDurhamNC 27708United States The Hospital for sick Kids University of TorontoToronto M5SOntarioCanada

since the outbreak of the coronavirus disease 2019(COVID-19)pandemic,over 103214008 cases have been reported,with more than 2231158 deaths as of January 31,*** the gold standard for diagnosis of this disease remains the reverse-transcription polymerase chain reaction of nasopharyngeal and oropharyngeal swabs,its false-negative rates have ignited the use of medical imaging as an important adjunct or *** imaging assists in identifying the pathogenesis,the degree of pulmonary damage,and the characteristic features in each imaging *** literature review collates the characteristic radiographic findings of COVID-19 in various imaging modalities while keeping the preliminary focus on chest radiography,computed tomography(CT),and ultrasound *** the higher sensitivity and greater proficiency in detecting characteristic findings during the early stages,CT scans are more reliable in diagnosis and serve as a practical method in following up the disease time *** research rapidly expands,we have emphasized the CO-RADs classification system as a tool to aid in communicating the likelihood of COVID-19 suspicion among healthcare ***,the utilization of other scoring systems such as MuLBsTA,Radiological Assessment of Lung Edema,and Brixia in this pandemic are reviewed as they integrate the radiographic findings into an objective scoring system to risk stratify the patients and predict the severity of ***,current progress in the utilization of artificial intelligence via radiomics is ***,the lesson from the first wave and preparation for the second wave from the point of view of radiology are summarized.

关键词： Coronavirus COVID-19 Computed tomography Ultrasound MuLBsTA scoring system Radiological Assessment of Lung Edema classification Brixia score

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