Results 71 to 80 of about 9,654,838 (253)

An improved clustering algorithm based on local density

open access: yesDianxin kexue, 2016
Clustering analysis is an important and challenging research field in machine learning and data mining.A fast and effective clustering algorithm based on the idea of local density was proposed by Alex.But the number of clusters and cluster centers in the
Xiaohui GUAN, Yaguan QIAN, Xinxin SUN
doaj   +2 more sources

Local density-based similarity matrix construction for spectral clustering

open access: yesTongxin xuebao, 2013
According to local and global consistency characterist points'distribution, a spectral cluster-ing algorithm using local density-based similarity matrix construction was proposed.
Jian WU   +4 more
doaj  

Metastatic niche shaped by host factors influences disseminated cancer cell fate

open access: yesFEBS Letters, EarlyView.
Metastasis is shaped not only by cancer cells but also by the environments they encounter. This review explores how factors such as aging, diet, the microbiome, lifestyle, and environmental exposures remodel organ‐specific niches in the lung, liver, bone, and brain, influencing where metastatic cells survive, remain dormant, or grow, and ultimately ...
Gwennan Delyth Ward   +2 more
wiley   +1 more source

Measuring the local dark matter density [PDF]

open access: yes, 2009
We examine systematic problems in determining the local matter density from the vertical motion of stars, i.e. the ``Oort limit''. Using collisionless simulations and a Monte Carlo Markov Chain technique, we determine the data quality required to detect ...
Garbari, S   +7 more
core   +1 more source

Gate-Tunable Asymmetric Quantum Dots in Graphene-Based Heterostructures: Pure Valley Polarization and Confinement

open access: yesC
We explore the possibility of attaining valley-dependent tunnelling and confinement using proximity-induced spin-orbit couplings (SOCs) in graphene-based heterostructures.
Adel Belayadi, Panagiotis Vasilopoulos
doaj   +1 more source

Local Likelihood Density Estimation and Value-at-Risk

open access: yesJournal of Probability and Statistics, 2010
This paper presents a new nonparametric method for computing the conditional Value-at-Risk, based on a local approximation of the conditional density function in a neighborhood of a predetermined extreme value for univariate and multivariate series of ...
Christian Gourieroux, Joann Jasiak
doaj   +1 more source

Invisible but not inaccessible—Revealing transient oligomers formed by intrinsically disordered proteins with solution NMR and complementary methods

open access: yesFEBS Letters, EarlyView.
Transient oligomers formed by intrinsically disordered proteins may be ‘invisible’ to direct detection yet remain accessible to solution NMR through equilibrium‐exchange measurements and pressure‐jump experiments. Complementary methods report on mass, stoichiometry, selected distance distributions, morphology, and internal packing.
Martin D. Gelenter, Ad Bax
wiley   +1 more source

The effect of liquor licence concentrations in local areas on rates of assault in New South Wales [PDF]

open access: yes, 2015
This paper argues that regulatory authorities should be concerned about increases in liquor outlet density. Abstract Aim: To investigate the relationship between liquor licence concentrations and assault rates in Local Government Areas (LGAs) in New ...
Nicole Mahoney   +2 more
core  

Frente : Órgano de la Junta Local del Frente Sindicalista Revolucionario de Madrid: Año I Número 1 - 1968 julio

open access: yes, 1968
Copia digital. España : Ministerio de Cultura y Deporte.
Frente Sindicalista Revolucionario de Madrid. Junta Local
core   +2 more sources

The role of miR‐335‐5p in the redifferentiation of BRAF p.V600E thyroid cancers

open access: yesMolecular Oncology, EarlyView.
The BRAF p.V600E mutation promotes thyroid cancer dedifferentiation and radioiodine resistance. Using a network approach, we identified miR‐335‐5p as a key regulator of BRAF‐mutated thyroid tumors. Restoring miR‐335‐5p increased thyroid‐specific gene expression and iodine uptake in cells and organoids.
Valeria Pecce   +11 more
wiley   +1 more source

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