Results 21 to 30 of about 246,893 (375)

Prediction of the Dst Index with Bagging Ensemble-learning Algorithm

open access: yesAstrophysical Journal Supplement Series, 2020
The Dst index is a commonly geomagnetic index used to measure the strength of geomagnetic activity. The accurate prediction of the Dst index is one of the main subjects of space weather studies.
S. B. Xu   +4 more
semanticscholar   +1 more source

Image Retrieval using DST and DST Wavelet Sectorization [PDF]

open access: yesInternational Journal of Advanced Computer Science and Applications, 2011
The concept of sectorization of the transformed images for CBIR is an innovative idea. This paper introduces the concept of Wavelet generation for Discrete sine transform (DST).The sectorization of the DST transformed images and the DST wavelet transforms has been done into various sector sizes i.e.4,8,12, and 16.
H B, Dhirendra Mishra
openaire   +1 more source

A field evaluation of the Hardy TB MODS Kit™ for the rapid phenotypic diagnosis of tuberculosis and multi-drug resistant tuberculosis. [PDF]

open access: yes, 2014
BACKGROUND: Even though the WHO-endorsed, non-commercial MODS assay offers rapid, reliable TB liquid culture and phenotypic drug susceptibility testing (DST) at lower cost than any other diagnostic, uptake has been patchy.
Castillo, Edith   +12 more
core   +4 more sources

Investigating the Mutations in atpE and Rv0678 Genes in Mycobacterium Tuberculosis Clinical Isolates

open access: yesJournal of Medical Microbiology and Infectious Diseases, 2023
Introduction: Tuberculosis (TB) caused by the bacterium Mycobacterium tuberculosis remains a critical global public health concern due to the high morbidity and mortality rates.
Nahid Madadi-Goli1, 2, 3   +7 more
doaj   +1 more source

Autoprediction of Dst index using neural network techniques and relationship to the auroral geomagnetic indices

open access: yesGeofísica Internacional, 2000
Posibilidades de predecir las variaciones de Dst basándose en sus valores previos fueron estudiados usando un perceptron de multicapas con alimentación directa. Fue encontrado que el índice Dst puede ser autopredicho con unas horas de anticipación. Ambas
M. V. Stepanova, P. Pérez
doaj   +1 more source

A statistical study of the global structure of the ring current [PDF]

open access: yes, 2004
[1] In this paper we derive the average configuration of the ring current as a function of the state of the magnetosphere as indicated by the Dst index.
Hughes, W. J.   +3 more
core   +3 more sources

Pyrazinamide Resistance and pncA Mutation Profiles in Multidrug Resistant Mycobacterium Tuberculosis

open access: yesInfection and Drug Resistance, 2022
Dawei Shi,1,* Qiulong Zhou,2,* Sihong Xu,1 Yumei Zhu,3 Hui Li,4 Ye Xu2 1National Institutes for Food and Drug Control, Institute of Pathogen Biology at the Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, People’s ...
Shi D, Zhou Q, Xu S, Zhu Y, Li H, Xu Y
doaj  

Approximating Directed Steiner Problems via Tree Embedding [PDF]

open access: yes, 2016
In the k-edge connected directed Steiner tree (k-DST) problem, we are given a directed graph G on n vertices with edge-costs, a root vertex r, a set of h terminals T and an integer k. The goal is to find a min-cost subgraph H of G that connects r to each
Laekhanukit, Bundit
core   +2 more sources

Manifestações orais das doenças sexualmente transmissíveis

open access: yesRevista da Faculdade de Odontologia de Porto Alegre, 2002
O objetivo do presente artigo é descrever a importância da prevenção das doenças sexualmente transmissíveis, através de uma revisão de literatura que elucida os principais aspectos clínicos, meios de diagnóstico e tratamento dessas doenças, que ...
Alessandra Carvalho   +3 more
doaj   +1 more source

On Finsler warped product metrics with vanishing $E$-curvature [PDF]

open access: yesAUT Journal of Mathematics and Computing, 2021
In this paper, we study Finsler warped product metric recently introduced by P. Marcal and Z. Shen and find characteristics differential equations for this metric to have vanishing $E$-curvature.
Ranadip Gangopadhyay   +2 more
doaj   +1 more source

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