How to find the mean, SD and CI in SPSS?

Hi, I hope that someone can help me with this task: I have 5 groups of participants which are numbered in SPSS from 1 to 5 (according to their group number) and are all under the variable group....

03 March 2021 506 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

What is the most reliable source to get Impact factor of journals?

Source to get Impact factor of journals

01 March 2021 6,654 2 View

Is anyone familiar with the cyclic compressive fatigue testing (BS EN 12697 - 25) ?

I would like to get more information on the cyclic compressive fatigue testing (BS EN 12697 - 25) which is typically done for bituminous material in pavement design. Any one can advise on the...

28 February 2021 2,004 3 View

What pH condition required to coat APTES on silica coated Fe3O4?

It's a hydrolysis reaction, which may produce by either acid or base-catalyzed reaction. so can anybody help me with this, which condition is suitable for this reaction?

26 February 2021 1,760 8 View

Why initial concentration of Pb not the same as calculated one when testing using AAS?

I am currently doing research on the adsorption of heavy metal using magnetic reduce graphene oxide. I use AAS to determine the concentration of the heavy metal. I prepare the Pb solution with...

26 February 2021 9,580 4 View

Stress/strain tensors decomposition ???

25 February 2021 6,760 1 View

What software programs can directly simulate Additive Manufacturing Directed Energy Deposition (DED)?

I understand there are a lot of software programs that can simulate DED by going through specific modeling, simulation, and commands. For me, that was time consuming and results were not accurate....

24 February 2021 4,428 3 View

What condition required for coating of Fe3O4@SiO2 by using APTES?

I tried coating Fe3O4@ SiO2 by using APTES in 5% water-ethanol but it is not coated. Kindly suggest a solution for it. Thanks

24 February 2021 5,992 4 View

Best FE Program for Concrete Strengthened with FRP Sheets?

Colleagues, I have been using ANSYS to model concrete strengthened FRP sheets, but less than happy with it. Any has recommendation for efficient, easy to use FE program for modelling concrete...

22 February 2021 7,528 3 View

How to make a time series imputation benchmark ?

Hello ! In a work, I have to benchmark different algorithms to fill in missing values in time series. I insist on the fact that this is imputation and not forecasting. In my case, I have access...

24 February 2021 7,470 7 View

What are the pros and cons for mice versus rats?

Hi Everyone, I am designing a pilot study using rodents to assess the effects of simulated space environments (radiation + altered gravity) on microbiome and immune system. I have limited...

24 February 2021 1,825 3 View

How to match the XRD of a compound for which there is no JCPDS file ? Is there any other characterization to claim the synthesis of desired compound?

I have synthesized LiMgF3 using the starting precursors LiF and MgF2 via solid state diffusion method. Now I am looking for some characterization to claim the desired product, as there is no...

09 February 2021 921 3 View

Grid connected inverter using virtual synchronous machine?

Hi everybody, currently, I am working on the grid-connected inverter. I want to make my grid-connected PV system a PLL-less system. I have studied some reachers are implementing a virtual...

07 February 2021 6,078 2 View

How to discretize a continuous time state-space model in MATLAB correctly?

I am trying to discretize a continuous time state space model using the following code s=tf('s'); G=1/(Iyy*(s^2)) Gs=ss(G) Gd=c2d(Gs,0.01,'zoh'); Now, when i use this discretized model 'Discrete...

30 January 2021 8,665 10 View

Can't run my IPMSM drive system with DC-supply higher than 125 V. Have anyone had similar problem?

Hey, I try to run my 4 pole IPMSM with PWSVM and use a typical controller with PI-controller with a current loop and speed loop. When I run my system with DC-supply 100 V with a steady-state speed...

28 January 2021 7,354 8 View

SAR X-Band constellation from Capella Space?

Dear all, I'd like to open here a sort of forum for understanding how the geodesists community is moving in view of the X-band SAR satellite constellation. The new constellation will offer new...

24 January 2021 6,248 0 View

Why it is required to optimize a unit cell generated from cif lattice parameters and atomic coordinates during ab initio solid state calculations?

A cif file represents a unit cell with minimum energy. My question is, in the start of any ab initio calculation for unit cell generated from the cif file, why we are advised to optimize cell...

19 January 2021 9,883 3 View

I am facing problem with integration of boost converter with single phase offgrid inverter?

i tested boost converter with MPPT and single phase offgrid inverter with close loop control separately. They work fine but when i connect them boost converter doesn't give the output as it did...

17 January 2021 6,428 6 View

"The following block is not supported in Phasor simulation?

I am designing a control system for Hybrid renewable energy systems using Matlab/simulink/simscape, but currently having a problem. Whenever I run the simulation, I get the error shown below. "The...

12 January 2021 2,142 5 View