How to create a random vector with specific Covariance Matrix?

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How to remove magnetic beads from exosomes?

I am isolating exosomes by magnetic beads coupled to antibodies. Now, I need to remove magnetic beads from my exosomes! what protocol do you suggest? thanks

20 December 2022 9,004 2 View

How to solve the problem of omitting ASC because of no within-group variance in STATA?

Dear All, I conducted a choice experiment to investigate consumer behavior towards corn oil; then, I analyzed my data by using stata for " Conditional Logit Model". In its result there is no...

30 April 2022 7,824 0 View

Which nudge do you recommend to affect consumer purchase intention in a hypothetical choice experiment?

I want to conduct a hypothetical choice experiment to investigate the impact of nudges on consumer purchase intention towards GMOs. The informative nudge is the one that affects consumers' slow...

26 February 2022 6,916 0 View

I have to use the Midlife Development Inventory personality test in my questionnaire. the target population is Persian. can I translate it on my own?

I want to publish a paper on consumer behavior based on this survey. So I want to be sure that there won't be any problems because of my translation. My English level is okay, but I thought maybe...

13 February 2022 1,764 5 View

Python code for U-NET for MRI and CT segmentation?

Dear colleagues; I am looking for a Python code to segment the lesions on CT and MRI images using UNET. I need a generic code which, by changing a few words, I can reuse for different lesions. The...

13 December 2021 3,420 3 View

Brain MR image Normalization before Radiomics feature extraction in 3D slicer?

Hello; Anybody knows how to perform normalization of brain MR images before feature extraction (Radiomics) in "3D slicer"? Also what is the best filter for brain MRI before radiomics. Thank you...

02 December 2020 3,326 1 View

Convolutional Neural network for stack of CT or MRI images?

Hello; I know how to train image classifiers (CNN) for classification of single cross-sectional CT or MRI image. However, I don't know how to send all images from one patient to the model. I need...

10 September 2020 9,539 4 View

Anybody interested in conduction a clinical trial about hemoglobin F in COVID-19?

Dear Colleagues; We observed less mortality of COVID-19 in regions with high hemoglobinopathy rates. This does not prove the effect of hemoglobin on this infection but it may worth to test it....

17 June 2020 9,403 4 View

How to plot a beam?

There is a uniform linear array with N transmitters. Let matrix S denotes transmitted signals. In fact S is an N*L matrix where N is the number of transmitters and L is the samples(snapshots) of...

29 May 2020 9,955 2 View

How Signal Power in MIMO Radar can be calculated?

Power of a transmitted radar signal, s[n] can easily be calculated as : P=(1/N) s[n] ' * s[n] where s[n] is an N*1 vector and ' denotes hermition. But how about power calculation for a MIMO...

13 April 2020 3,767 1 View

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

Is it necessary to covary exogenous constructs in a structural model?

I am working on a SEM model where i have 7 latent variables (6 exogenous and 1 endogenous). In AMOS when I co-vary the exogenous constructs, only 2 paths are coming significant out of 6. But when...

03 August 2024 6,028 4 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