10 January 2024 0 7K Report

The inverse of Hessian matrix has obvious decoupling effect in multi-parameter waveform inversion, but does it still have parameter decoupling effect in travel time inversion? If so, why? If not, why not?

More Jianming Zhang 张建明's questions See All
Do experts have journals in the field of artificial intelligence and big data that are not indexed by SCI or EI?

Do experts have journals in the field of artificial intelligence and big data that are not indexed by SCI or EI?

05 August 2024 8,836 2 View

Are there any good simple systems or platforms to recommend?

In order to show people the beauty of control and enhance enthusiasm for learning control theories, are there any good simple systems or platforms to recommend?

05 August 2024 10,034 1 View

Where to find a gene list for CRISPRa/i library screening of regulatory factors that affect pathogenic Th17 differentiation in PBMC?

I want to perform a CRISPRa/i library screening for candidate regulatory factors that affect pathogenic Th17 differentiation in PBMC. But I am wondering how to define the size of gene library, so...

31 July 2024 2,150 0 View

The complex interactions between oral microbiota and oral mucosal immunoregulation: implications for oral health and disease development?

This research question explores the complex interactions between oral microbes and oral mucosal immune regulation. The diversity and function of oral microbes have important impacts on oral health...

09 July 2024 7,883 0 View

How to solve the problem that the film obtained by magnetron sputtering on the ternary alloy target A2BC is ABC (not A2BC)?

Using magnetron sputtering with an alloy target composed of A:B:C in a 2:1:1 ratio, the resulting thin film composition is A:B:C=1:1:1. How can you achieve a A:B:C=2:1:1 composition? What are some...

24 June 2024 1,605 0 View

A small question about the principle of lasers…?

Given the energy level diagram of a ruby laser shown in the right figure, where \( R_{02} \) is the pumping rate, and \( \tau_2 \) and \( \tau_1 \) are the lifetimes of levels \( n_2 \) and \( n_1...

23 June 2024 4,855 0 View

Can the matter wave theory which suggests that when matter waves resonate be used to solve HTS ?

Can the matter wave theory, which suggests that when matter waves resonate, the energy input from the outside is minimal, be used to solve all superconductivity problems? The matter wave theory,...

17 June 2024 7,957 0 View

There is any relationship between critical temperature of superconductor and the atomic weight & radius?

till now, there are many superconductors. Is there any relationship between critical temperature of superconductor and the atomic weight & radius? Now the isotope effect is one relationship...

12 June 2024 1,908 3 View

How to promote an academic journal and get high-quality manuscripts?

International Journal of Complexity in Applied Science and Technology(https://www.inderscience.com/jhome.php?jcode=ijcast) is a new journal. Can anyone tell me how to promote the new journal and...

09 June 2024 1,922 1 View

DNA FISH with multiple signal spot ?

I am doing DNA FISH on mice stem cells to detect an endogenous gene location. The expected result should have two signal spots, representing the two copies of the allele. However, what I see is...

06 June 2024 941 1 View

Similar questions and discussions
How to define an anisotropic material with asymmetric elastic compliance/stiffness matrix in ANSYS APDL?

I need to model an anisotropic material in which the Poisson's ratio ν_12 ≠ ν_21 and so on. Therefore, the elastic compliance matrix wouldn't be a symmetric one. In ANSYS APDL, for TB,ANEL...

09 August 2024 5,048 2 View

Is it true that $\det(V(A))$ may be only $\pm 1$, depending on $n$, for the last symmetric tridiagonal matrix $A$?

One can try to generalize the Vandermonde determinant in the following direction: Let $A$ be any symmetric $n$-order square matrix. Consider its powers' diagonal elements $(A^k)_{ii}$ and...

08 August 2024 6,690 1 View

Usage of internal standards in LC-MS/MS analysis?

Have you ever seen a LC-MS/MS method uses both internal standards and external standards (in matrix matching purpose) but the concentrations of internal standards are outside the calibration curve...

05 August 2024 3,084 6 View

Request a single Lecture notes for math as detailed as this that I can find in one place?

- The Existence/Uniqueness of Solutions to Higher Order Linear Differential Equations - Higher Order Homogenous Differential Equations - Wronskian Determinants of $n$ Functions - Wronskian...

03 August 2024 2,366 0 View

Tissue homogenization in mouse with FastPrep-24™ 5G - is the D matrix system useful?

I need to lyse and homogenise mouse tissues. So far I have experimented with liver and lung tissue, using matrix D. The liver was completely lysed with 6 repetitions of the standard program, but...

31 July 2024 9,186 0 View

Is it true that science is leaving the era of mathematics and entering the era of matrix mechanics?

We assume this to be true. Science leaves the era of mathematics and enters the era of matrix mechanics and the turning point is the discovery of numerical statistical theory called Cairo...

31 July 2024 3,900 2 View

Help on understanding the implementation of Mori Tanaka method on MATLAB?

I am new to Micromechanics and having similar problem with understanding the implementation of the formula's. I would appreciate if anyone can guide me on how to go about getting a scalar value...

30 July 2024 969 0 View

How Can I Apply Hashin Damage Properties to Solid Elements in Abaqus Without Using VUMAT?

Sure, here is the translation: I have a 3D orthogonal woven composite structure where warp, weft, and binder yarns are oriented in three directions. After modeling these yarns and the matrix in...

28 July 2024 8,169 0 View

Can we find a statistical matrix mechanics equivalent to the Schrödinger equation?

We assume that we can find a statistical matrix mechanics equivalent to Schrödinger's PDE in two consecutive steps: i-Transform the Schrödinger PDE describing the wave function Ψ into its square...

27 July 2024 3,959 4 View

Can biogeographical regions work as a character in a character matrix for a phylogenetic analysis?

Basically I'm helping with the matrix using a cosmolitan group, could one of the characters used for be biogeographical regions (Neartic, Neotropical, etc)? Most of the data in this matrix refers...

25 July 2024 9,753 2 View

Our partners will collect data and use cookies for ad personalization and measurement. Learn how we and our ad partner Google, collect and use data. Agree & close