Warning in Lavaan, variance-covariance not positive definite!, model is not identified?

Dear colleagues, I am new to R, I have been using Amos for conducting CFA but came to learn that when dealing with Likert scale, Lavaan in R is a better tool to do such analysis. I started using...

30 December 2020 5,608 3 View

How to customize the first Reduction cells in NASnet-A according to variable input image size?

In the 2018 Zoph et al paper, the authors proposed transfereable NAS architecture called NASnet-A (along others) that uses two reduction cells (found by search algorithm on customized search...

03 November 2020 8,823 1 View

How can we compute the number of elementary abelian p-subgroups of rank $2$ in $GL_{n}(\mathbb{F}_{p})$?

Let $p$ be a prime number, and let $\mathbb{F}_{p}$ be a finite field of order $p$. Let $GL_{n}(\mathbb{F}_{p})$ denote the general linear group and $U_{n}$ denote the unitriangular group of...

22 August 2020 4,917 3 View

What are the major journals specialized in linguistics?

I want to publish my work and am looking for some indexed journal but due to the large amount of journals and my little experience, I do not know how to differentiate between them. thank you

18 May 2020 7,591 4 View

No title

19 September 2019 5,877 1 View

VOF method and the problem of mass conservation ?

We all know that VOF method in multiphase flow is conservative... when using this with method in free surface or interfacial flow we ended with mass loss even with a a finest grid, is there any...

22 February 2019 1,583 3 View

How can I obtain clear histological sections from woody Saharan spontaneous plants?

Saharan spontaneous plants are very lignified this lignification makes the histological section very difficult, I tried to find the best methods of allocation of cuts for these plants.

15 October 2018 6,190 4 View

What is the best protocol for soil microorganisms identification?

What is the best protocol for soil microorganisms identification?

24 October 2017 5,936 4 View

A Fuzzy co-clustering algorithm for Python OR Java ?

16 February 2017 4,100 3 View

A comparative study (or a survey) of change detection approaches in sequential data?

Given a sequence of n items associated with a user: (item1, item2, ..., itemn) such that each item is represented by k features. This sequence could represent films watched by a user over time. To...

11 February 2016 9,715 3 View

Anyone plz suggest relevant topic for research in image processing+Deep learning.?

I have selected brain tumor images ...but now found that already lots of research done n this topic.

03 March 2021 5,774 3 View

How to increase a model accuracy ?

dear community, my model is based feature extraction from non stationary signals using discrete Wavelet Transform and then using statistical features then machine learning classifiers in order to...

03 March 2021 6,994 5 View

Chlorinated organic formation in odor control scrubbers using hypochlorite?

I'm involved in a study of odor control technologies for municipal wastewater treatment plant. One of the control options involves a chemical 2-stage (acid/alkaline) packed bed scrubber. The...

03 March 2021 3,661 2 View

Is there any tutorial for comsol general projections?

Hi, im trying to make a projection in a 3d comsol model. I have a non uniforme chanel and my intention is to get the average tempreture in the y-z cross section and se the average tempreture...

02 March 2021 4,624 4 View

Is it possible to do piezoelectric coupling in ANSYS-APDL or COMSOL between tapered substrate and rectangular piezoelectric patch?

How to do Piezoelectric coupling in ANSYS-APDL or COMSOL between tapered substrate and rectangular piezoelectric patch? Piezoelectric coupling between the rectangular substrate and rectangular...

02 March 2021 9,833 3 View

Image Processing and classification using keras/Tensorflow?

Do you have some recommendations approaches on Image processing and classification of plant diseases using TensorFlow/Keras?

02 March 2021 1,493 4 View

Which SAR dataset to use for generating coherency matrix and performing target decomposition (Description) ?

Working on chandrayaan-2 DFSAR data, there are three datasets available: 1) Slant range image data product: The slant range complex image file. Each pixel is represented by two 4-byte floating...

02 March 2021 8,481 3 View

Do you know any MR image dataset?

I would like to research on MR images (0.5T and 3T). Can you please suggest some websites that I can download dataset including both 0.5T and 3T MR images? Thank you.

02 March 2021 7,735 3 View

Timeout error!! Processor in the loop (PIL) using STM32F4 Matlab 2018a?

Dear Researchers I am trying to perform a PIL simulation using STM32F4 Discovery board and comunication serial USB TO TTL. During simulation I receive the following timeout error: An error...

01 March 2021 2,327 1 View

How can i resolve the "final solutuin is not converged" error in Comsol for my heat transfer simulation??

I have been trying to simulate heat transfer problem in Comsol 5.5 for long time but it always throw an error stating: "Failed to find a solution. Maximum number of Newton iterations...

28 February 2021 8,626 3 View