Results 31 to 40 of about 1,445,591 (343)
The Innovation Threshold [PDF]
SSRN Electronic Journal, 2007 In this paper, we propose an economic model to analyse the sales out of new products. This model accounts for the fact that even among firms for which R&D is a permanent activity, a fraction of firms does not have sales of innovative products during a two-year observation period.
K. van Montfort +3 more
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Royal Society Open Science, 2021 Many physiological, biomechanical, evolutionary and clinical studies that explore skeletal structure and function require successful separation of trabecular from cortical compartments of a bone that has been imaged by X-ray micro-computed tomography ...
Eva C. Herbst +5 more
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ACM SIGMOD Record, 2023 Threshold queries are an important class of queries that only require computing or counting answers up to a specified threshold value. To the best of our knowledge, threshold queries have been largely disregarded in the research literature, which is surprising considering how common they are in practice.
Bonifati, Angela +9 more
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Entropy, 2022 There are various distributions of image histograms where regions form symmetrically or asymmetrically based on the frequency of the intensity levels inside the image.
Walaa Ali H. Jumiawi, Ali El-Zaart
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Covariance regularization by thresholding [PDF]
, 2009 This paper considers regularizing a covariance matrix of $p$ variables estimated from $n$ observations, by hard thresholding. We show that the thresholded estimate is consistent in the operator norm as long as the true covariance matrix is sparse in a ...
P. Bickel, E. Levina
semanticscholar +1 more source
On the threshold of intractability [PDF]
Journal of Computer and System Sciences, 2015 We study the computational complexity of the graph modification problems Threshold Editing and Chain Editing, adding and deleting as few edges as possible to transform the input into a threshold (or chain) graph. In this article, we show that both problems are NP-complete, resolving a conjecture by Natanzon, Shamir, and Sharan (Discrete Applied ...
Pål Grønås Drange +3 more
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Canopy gap delineation using UAV data in a Hyrcanian forest (Case study: Shastklateh Forest) [PDF]
مجله جنگل ایران, 2022 Canopy gap delineation is essential for achieving a better comprehension of forest structure. This study aims to (a) extract canopy gaps using UAV data and (b) compare the performance of different canopy gap extraction methods in a managed stand in the ...
Sh Amini +3 more
doaj +1 more source
IoT-Based Information System for Healthcare Application: Design Methodology Approach
Applied Sciences, 2017 Over the last few decades, life expectancy has increased significantly. However, elderly people who live on their own often need assistance due to mobility difficulties, symptoms of dementia or other health problems.
Damian Dziak +2 more
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Locally Adaptive Tree-Based Thresholding Using the treethresh Package in R
Journal of Statistical Software, 2017 This paper introduces the treethresh package offering accurate estimation, via thresholding, of potentially sparse heterogeneous signals and the denoising of images using wavelets.
Ludger Evers, Tim Heaton
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Remote Sensing, 2018 Natural hazards include a wide range of high-impact phenomena that affect socioeconomic and natural systems. Landslides are a natural hazard whose destructive power has caused a significant number of victims and substantial damage around the world ...
Rocío N. Ramos-Bernal +4 more
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