Results 31 to 40 of about 7,181,581 (294)

Impact of Groundtrack Pattern of a Single Pair Mission on the Gravity Recovery Quality

open access: yesGeosciences, 2018
For future gravity satellite missions, aliasing of high frequency geophysical signals into the lower frequencies is one of the most challenging obstacles to recovering true gravity signals, i.e., to recover the truth.
Siavash Iran-Pour   +3 more
doaj   +1 more source

The balancing trick: Optimized sampling of imbalanced datasets—A brief survey of the recent State of the Art

open access: yesEngineering Reports, 2021
This survey paper focuses on one of the current primary issues challenging data mining researchers experimenting on real‐world datasets. The problem is that of imbalanced class distribution that generates a bias toward the majority class due to ...
Dr. Seba Susan, Amitesh Kumar
doaj   +1 more source

The Impact of Sampling Medium and Environment on Particle Morphology

open access: yesAtmosphere, 2017
Sampling on different substrates is commonly used in laboratory and field studies to investigate the morphology and mixing state of aerosol particles. Our focus was on the transformations that can occur to the collected particles during storage, handling,
Chao Chen   +4 more
doaj   +1 more source

Sampling Techniques

open access: yes, 2021
This chapter assesses sampling techniques. Researchers may restrict their data collection to a sample of a population for convenience or necessity if they lack the time and resources to collect data for the entire population. Therefore, a sample is any subset of units collected from a population.
openaire   +2 more sources

The Adaptive Sampling Revisited [PDF]

open access: yes, 2019
The problem of estimating the number $n$ of distinct keys of a large collection of $N$ data is well known in computer science. A classical algorithm is the adaptive sampling (AS).
Drescher, Matthew   +2 more
core   +3 more sources

Optimal random sampling designs in random field sampling [PDF]

open access: yes, 2003
A Horvitz-Thompson predictor is proposed for spatial sampling when the characteristic of interest is modeled as a random field. Optimal sampling designs are deduced under this context.
Rodríguez, José E., Ávila, Fernando
core   +1 more source

Iterative Row Sampling

open access: yes, 2013
There has been significant interest and progress recently in algorithms that solve regression problems involving tall and thin matrices in input sparsity time.
Li, Mu, Miller, Gary L., Peng, Richard
core   +2 more sources

Double-Sampling Single-Loop EA Modulator Topologies for Broad-band Applications [PDF]

open access: yes, 2006
This paper presents novel double sampling high-order single loop sigma-delta modulator structures for wide-band applications. To alleviate the quantization noise folding into the inband frequency region, two previously reported techniques are used.
Rodríguez Vázquez, Ángel Benito   +2 more
core   +1 more source

European Standard Clinical Practice Guideline and EXPeRT Recommendations for the Diagnosis and Management of Gastroenteropancreatic Neuroendocrine Neoplasms in Children and Adolescents

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Pediatric gastroenteropancreatic neuroendocrine neoplasms (GEP‐NENs) are extremely rare and clinically heterogeneous. Management has largely been extrapolated from adult practice. This European Standard Clinical Practice Guideline (ESCP), developed by the EXPeRT network in collaboration with adult NEN experts, provides (adult) evidence ...
Michaela Kuhlen   +23 more
wiley   +1 more source

Fusão de imagens por IHS para melhorar a identificação de uso do solo em elementos amostrais Image fusion through IHS to improve identification of land use in sample elements

open access: yesEngenharia Agrícola, 2007
Fotografias aéreas métricas atuais sobre áreas específicas nem sempre estão disponíveis. Esse é um dos principais problemas no Brasil para aplicação de técnicas de amostragem de área para a estimativa de safras.
Marcos Adami   +6 more
doaj   +1 more source

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