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Questions related to Zero
Hello all, I am analyzing the seaweed exports from Peru during 1995-2020. In some species, exports were zero for one or two years during the abovementioned period. For calculation of Compound...
31 May 2021 9,447 4 View
The p-value and F-value for lack of fit for my regression model was not given. after diagnosing i discovered it is because the SSPE and MSPE is zero. please what does this imply?
29 May 2021 3,707 3 View
The shell is made of metal, the inside and exterior are inviscid fluids. The ratio of shell thickness to radius (h/a) ranges from 0.5 % to 2 %. I have written Fortran programs for the models...
25 May 2021 4,569 1 View
The estimator in poisson regression model equal zero when it is used maximum likelihood method to estimate the parameter of the model which is mention above , what is the method is used to get...
18 May 2021 933 3 View
Is it possible to synthesize a material whose all outer atoms have all bonds satisfied? Any research related to this.
13 May 2021 8,776 1 View
The modified Mood test for the scale alternative and its numerical comparisons - Murakami 2015 Hi! About this article, I'm implementing the test in Excel. However, I cannot get the same results...
13 May 2021 6,202 4 View
I have attached the image which is from the following paper. F. Liang, et al., Multi-scale modeling of the human cardiovascular system with applications to aortic valvular and arterial stenosis,...
12 May 2021 641 2 View
I have measured DRS spectra of DPA (9,10-diphenylanthracene) solid powder from 300 to 800 nm. What puzzles me is that its absorption value begins to decrease when the wavelength is less than 440...
30 April 2021 8,300 3 View
Good afternoon. I am working in HEC-HMS model the newest version (4.8) and I am stuck as I am getting zero peak discharge values at the outlet of the basin! please note that I am using Snyder's...
26 April 2021 363 3 View
The main result of decoherence theory is that the non-diagonal elements of a quantum object's density matrix become zero due to uncontrolled interactions with the environment. For me, that only...
18 April 2021 6,556 3 View
I have some equations attached as a file to the question. I want to find the variables S, delta ,V ,Vc ,Te and beta_c resulting in the smallest overall error in the equations using genetic...
06 April 2021 909 8 View
Since the Industrial Revolution, society's development has been largely driven by fossil fuels. The Global Energy Mix is still Dominated by Fossil Fuels: Globally, the cumulative share of coal,...
01 April 2021 9,977 5 View
Reading through Prof. Ben Etzkorn's piece on Data Normalization and Standardization (1), he writes: "To normalize data, traditionally this means to fit the data within unity (1), so all data...
22 March 2021 2,025 1 View
Hello research fellows, I would like to understand how I can create a statistical test, testing that the relationship between A and B is zero. That is, my ALTERNATIV HYPOTHESIS predicts a zero...
11 March 2021 7,320 8 View
When explaining substitution models, the substitutions are expressed as Q matrix. Why is the sum of the elements in a row zero?
01 March 2021 4,175 3 View
I am refining my XRD data using in FullProf program. The intensity of the modulated X-ray peaks is almost flat. I tried to adjust the peak intensities but unsuccessful. What is the reason? I guess...
24 February 2021 2,574 4 View
Recently we used single staining to make a compensation matrix. But, for each single staining we saw that 13 to 25 percent of our negative population had been shown below Zero. In this situation...
22 February 2021 10,181 2 View
I have two groups (unpaired) of plant biomass measurements and want to know whether there is a test that can be used to determine statistical significance where assumptions are not violated. The...
19 February 2021 1,462 4 View
I understand that for partial mediation to have occured the CI for the indirect effect must not cross zero and the b value for the indirect effect should be smaller than the b value for the direct...
15 February 2021 3,548 7 View
Hello I have 2 groups with different sample sizes of (experts: 5 to 8) and (Users: 28 to 35) answering 21 questions on a 7 points Likert scale about the importance of some dimensions for...
01 February 2021 4,107 7 View
How nessesary is working point zero charges for any adesorbent? I want to know how suitable the surface of the material is good for adsorption. I got SEM and FTIR results and thought those are...
31 January 2021 5,288 2 View
Hi everyone, recently i have a question about how to calculate the orthotropic elastic matrix of cancellous bone cube. I really need the help!!!! I applied six stress states to the cancellous...
22 January 2021 9,297 2 View
More specifically, how to integrate the distribution function from zero to infinity at any time to solve a dynamic equation.
21 January 2021 7,163 3 View
First of all, thank you for your consideration about this question. I've been working on development of in-vitro diagnostic medical device as research engineer since 2013. Especially, my major is...
15 January 2021 4,066 4 View