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Questions related to Zero
Riemann's Hypothesis is one of the unsolved Millennium Problems. The main thing in this is it is a conjecture that the Riemann zeta function has its zeros only at the negative even integers and...
02 March 2020 6,448 3 View
I want to conduct a phase change material simulation without any natural convection effects i.e. melting because of pure conduction. Is it done using (a) a constant density. (b) still using...
29 February 2020 1,304 4 View
1. Autocorrelation function of a timeseries was calculated by a lag correlation of this timeseries. 2. crossing of zero or 1/e line with autocorrelation function line represents persistence of a...
18 February 2020 9,463 1 View
I want to prepare five soil samples with incremental water contents starting from zero percent up to 100 percent. As I want to calibrate and validate capacitive soil moisture sensor SKU:SEN0193 I...
09 February 2020 962 3 View
I tried using the 'filtic' function (makes initial conditions for 'filter' function) as follows: % hpf_n = high-pass filter order % hpf_zi = high-pass filter initial state % nvar = number of...
06 February 2020 6,486 1 View
I would like to know how to draw azide groups with gauss view. I know how to build it but my problem is the number of charge (attached photo) should be zero or not? because there are two charges...
03 February 2020 3,239 3 View
I am using a VUMAT code for material definition of a polymer but the code is not working and ABAQUS is showing error: Bad Material definition in element number 1 instance PART-1-1: zero or...
23 January 2020 1,605 3 View
Is there any mathematical formulation available explaining the phenomena of formation of re circulation zone in terms of velocity of the fluid and magnetic field strength. Which can explain...
20 January 2020 9,325 2 View
In a transfer function we have poles and zeros. It is easy to know why it gets the name of zeros because the transfer function get the value of 0 at the zeros point(s), but I am curious why it...
14 December 2019 8,618 1 View
I wrote a CFD code in Delphi for turbulent axisymmetrical pipe flow (incompressible - SIMPLE - exponential discretization - staggered grid). Epsilon diverge during Gauss-Seidel point to point...
13 December 2019 7,348 3 View
I am developing an algorithm which will identify the battery equivalent circuit parameters. I have EIS data from frequency ranging 7.81kHz to 0.7Hz, but I want to use data only from 1kHz (where...
04 December 2019 6,561 1 View
We get values for constant term and residuals in Stata after using xtmixed command. However, how do we know whether these values are significant or not? The random effects model variance has a...
27 November 2019 6,091 2 View
Equilibrium is a state of a system which does not change. If the dynamics of a system is described by a differential equation (or a system of differential equations), then equilibria can be...
24 November 2019 315 5 View
Hello Dear members! I am working on firms ESG data which is in panel form. There are a lot of missing value in ESG score in particular years. My question is would i replace missing values with...
23 November 2019 9,567 1 View
I just want to know that how band structure changes with biasing at fixed zero gate voltage.
22 November 2019 6,737 2 View
The type-3 PLL can maintain the estimation performance during frequency ramp while the conventional SRF-PLL has the inability in tracking frequency ramp with zero steady-state errors. The key...
24 October 2019 9,077 1 View
hi. I'm trying to simulate a pretty simple geometry including nanoparticles by mcnp. my whole cod is as below:1 project nano C Cell cards 1 2 -1 -7 +8 +9 -10 -11 +12 fill=1 2 1 -0.00125 -1 +2 -3...
11 October 2019 9,317 4 View
Hi, I am modeling the caspian sea with mike 21 hd flow model . i took the bathymetry from Gebco and Etopo1 . but the bathymetry doesnt match real borders of the sea . is this problem because of...
04 October 2019 7,486 3 View
We have prepared a sodium silicate inverse opal, which shows an intense yellow bright light via Bragg reflection on the ambient visual. However, when we measure it in standard UV-Visual...
27 September 2019 714 7 View
In the attached image I explained my question clearly.
25 September 2019 9,160 7 View
It seems the state evolution ode; xdot=f(x,u), is known to satisfy f(0,0)=0, hence f(0,u(0))=0, then can we conclude at any control system, always u(0)=u(x=0)=0, and get the result that...
20 September 2019 3,000 3 View
I need to analyze microbial kinetic data obtained at varied time periods. That is every day measurements at first week, then once in two days for another week, next once in five days for one month...
13 September 2019 7,307 1 View
We are using LabVIEW but don't have the DAQ card for acceleration measurement from the accelerometer. Because of that we cannot able to measure acceleration vs time directly from the...
12 September 2019 6,165 3 View
In least squares, assuming homoskedacity, the algorithm will try to reduce the sum square error where the data points are densest. This can be a problem, if you need to ensure accuracy in a region...
06 September 2019 6,437 2 View