Both individuals and organizations that work with arXivLabs have embraced and accepted our values of openness, community, excellence, and user data privacy. ArXiv is committed to these values and only works with partners that adhere to them. HeliScan MicroCT analysis used in the correlative study of defects in an oil filter casing made of a glass-fiber-reinforced composite. E, “Stochastic
models of polymeric fluids at small Deborah number,” submitted to J.
In this section, the generation framework of multi-scale knowledge model is introduced, and the specific knowledge generation process is proposed. Finally, the data interface of multi-scale knowledge model is presented. These results show that the connectedness of adaptive ASFs and usual ASFs by reconstruction is an overwhelming advantage. Indeed, the edges are quickly damaged by the usual ASFs (Figure 19b–fig20d), while they are preserved with the connected ASFs. Moreover, the filters by reconstruction remove fine details (as revealed in the scene on the camera), for the eye of the human face and for the buildings (Figure 19e–fig20g), although they are connected. On the contrary, the decomposition of the original image with ANMM-based filters does not decimate relevant structures from fine-to-coarse scales (Figure 19h–j).
Quantifying disorder one atom at a time using an interpretable graph neural network paradigm
When the existing knowledge is limited, product design then relies mainly on heuristics. As a result, there has been a challenging task to develop a systematic product design method to minimize experimental efforts in the absence of complete data (Hill, 2004, Hill, 2009). Multiscale modeling that can establish the comprehensive relationships between processing conditions and product properties from micro- to macro-scales is thus a promising tool for new chemical product development (Jaworski and Zakrzewska, 2011). For hybrid methods, we note essentially the approach of Gu et al.  who use the frequency bin nonlinear adaptive filtering for speech separation. Moreover, a multi pitch contour estimation using HMMs (hidden Markov models) is introduced. This HMM pitch estimator is joined with a pseudo-perceptual pitch estimator for the instantaneously estimation of fundamental frequencies of two speakers from summed signals.
The use of morphological scale-spaces has become a popular tool for the multiscale analysis of grey-scale images. However, in common with other morphological techniques, their extension to color and other multichannel images is not straightforward because of the absence of an unambiguous ordering. This chapter describes an approach to the development of color morphological scale-spaces using area openings and closings based on the identification and processing of vector extrema. The properties, development and implementation of the resulting color area morphology scale-spaces are described and studies of their application to color image segmentation and noise reduction are presented.
Multi-scale evolution mechanism and knowledge construction of a digital twin mimic model
An example of such problems involve the Navier–Stokes equations for incompressible fluid flow. Identifying users who exhibit frequent usage, full adoption, long-term retention, and higher than average revenue per user can help shed light on the type of customers you want to target and the behaviors you want to encourage. Using our Customer Journeys tool, for example, you can visualize the most common paths users follow before or after a given event. They’ve built out in-depth user flows and feature usage dashboards that enable them to identify—in real-time—user drop-offs, points of friction, and how customer segments diverge from the expected customer journey. You use data to inform overall strategy, but it isn’t complete or always used in roadmaps or other day-to-day decisions.
Indeed, this filter provides several possible values for the intrusion pitch making then a good estimate of the fundamental frequency of this signal. In Section 2, we present the different techniques used in the proposed approach. The evaluation of its performance and the comparison with other state-of-the-art algorithms are given in Section 4. Up until now, new chemical products have been conventionally created by resorting to the knowledge of existing products combined with trial and error experimental techniques.
Computers & Chemical Engineering
For temporal or spectral filtering methods, we find essentially the approach of Tolonen et al.  which is based on the computationally efficient model and periodicity analysis of complex audio signals. This approach uses the summary autocorrelation function (SACF) and enhanced SACF (ESACF) representations for the multi-pitch estimation of an audio signal. Besides, Signol et al.  proposed a purely frequency frame to frame algorithm based on the use of plural spectral combs of harmonics suppression (HSP). First, they applied a uniform infinite comb filter in the frequency domain which plays the role of sampler. Then, they used a missing tooth comb filter and a comb filter with negative teeth.
Besides, Christensen, Højvang, Jakobsson et al.  introduced an algorithm based on filtering methods in combination with a statistical model selection criterion. The classical comb filtering method, a maximum likelihood method, and some filtering methods based on optimal filtering are used for fundamental frequencies estimation. The recent surge of multiscale modeling from the smallest scale (atoms) to full system level (e.g., autos) related to solid mechanics that has now grown into an international multidisciplinary activity was birthed from an unlikely source. Since the US Department of Energy (DOE) national labs started to reduce nuclear underground tests in the mid-1980s, with the last one in 1992, the idea of simulation-based design and analysis concepts were birthed. Multiscale modeling was a key in garnering more precise and accurate predictive tools. In essence, the number of large-scale systems level tests that were previously used to validate a design was reduced to nothing, thus warranting the increase in simulation results of the complex systems for design verification and validation purposes.
Structuring of products and education of product engineering
True multi-scale microscopy generates high quality and reliable imaging across all instruments while also accurately aligning them into a complete representation of the sample. With Thermo Scientific automation and data analysis software, the entire multi-scale workflow becomes a guided and routine procedure that can be readily integrated into your process or quality control environment. Multi-scale analysis begins with micro-scale observation with non-destructive spectroscopic techniques. X-ray microtomography (microCT) produces a complete, 3D rendering of the sample through serial X-ray scans.
- Multiple scientific articles were written, and the multiscale activities took different lives of their own.
- The whole process from the digital twin data to knowledge is shown in Fig.
- The advent of parallel computing also contributed to the development of multiscale modeling.
- One technique used to account for microstructural nuances is to use an analytical equation to model behavior.
- It detects the voiced and unvoiced regions in a mixture of two speakers, identifies the number of speakers in voiced regions, and estimates the pitch of each speaker in those regions.
- The results demonstrate that the product model can be used to guide a multi-scale generalization of the polymer product from chemical process to product engineering.
Then a multiple-comb filters is applied to eliminate the dominant signal. After subtracting the resulting signal from the mixture, we obtain the residual signal. Next, we reapply the AMP to the obtained signal to estimate the second pitch. After, we calculate the mean of each column of the appropriate selected group. The results show the robustness and effectiveness of the proposed approach. This section briefly introduces one case of the proposed method to demonstrate its advantages and potential.
This section reviews the state-of-the-art on the knowledge modeling of digital twin and highlights the research gaps in this field. Some of these techniques aim to homogenize the properties of the local scale; others attempt to capture nonlinear behavior via curve fitting and progressive damage approaches. Many of the most famous techniques, such as those evaluated in the World Wide Failure Exercises, https://wizardsdev.com/en/news/multiscale-analysis/ are related to the analysis of unidirectional composites. The key is that the user must be very aware of the assumptions and bounds of their model when employing one of these techniques. The most efficient solution is to use multiscale FEA to divide and conquer the problem. To accomplish this, a local scale model of the material microstructure is embedded within the global scale FE model of the part.
They help you understand your users, build a better product, and reap the revenue benefits of both. At Atlassian, product managers, designers, and everyone in between are empowered to ask questions about product usage and better understand the impact of their product for users. They’ve built out an analytics stack to enable that kind of autonomous question-and-answer access.