Hello fellow researcher .. What is the meaning of your name?

I would like to create a small guide containing the meanings of the names .. Thanks to everyone who cooperates with me in achieving it.

03 March 2021 5,266 4 View

Can we classify HV and LV lines based on line length?

I have dataset which shows the length of power lines. I need to classify the lines based on the line length. Is there a rule to classify the High voltage (HV) and low voltage (LV) lines based on...

03 March 2021 4,116 4 View

Which is better medicine or food in obesity?

Preference in terms of the scientific aspect

28 February 2021 796 2 View

How could I take into consideration the weights of observation in a system of seemingly unrelated regressions (SUR) in rstudio?

I build a model of 4 regression equations (probit and OLS) in R studio. I need to take the weights of observations into consideration. While it is simple to do so for every regression equation,...

27 February 2021 1,233 1 View

Can anyone share his experience regards Smoothing in origin?

I am working on TiO2 composite material and the results of XRD have a lot of small/junk peaks and while I apply a smooth filter in Origin then the other characteristics peaks disappear so anyone...

26 February 2021 8,183 3 View

Treating Intermediate Variable in Linear Regression Analysis in SPSS?

While performing the Linear regression analysis in SPSS version 26.0.0. my intermediate/mediation variable goes to the excluded section. Please share your valuable suggestion "How to restrain the...

25 February 2021 4,591 5 View

How to find natural frequency of a bridge from vehicle induced vibrations?

i have frequencies of bridge that are effected by mass of vehicle. the problem is when any vehicle pass the bridge it would add the its mass to the bridge mass ultimately mass of the bridge will...

22 February 2021 10,004 3 View

Purification of proteins from baculovirus-infected insect cells?

18 February 2021 6,665 6 View

Small displacement measurement in vacuum?

Hello, I have a question. there is a circular thin foil which vibrates in vacuum, the foil restricted and moves up and down. it is like a diaphragm between two pipes . both sides are in vacuum but...

18 February 2021 8,075 3 View

Pile-Raft connection?

Greetings, I was wondering what is the optimal way to connect the reinforcement at the top of the pile (the part that connects to the raft foundation): -The pile bars are left straight and...

16 February 2021 2,007 3 View

How to find the right number of integration points in second order 3d finite elements?

I am familiar with finite element simulations and numerical schemes like the Gauss Legendre quadrature. I also know that the Gauss integration yields exact values for polynomials up to degree 2n-1...

27 February 2021 6,818 3 View

How can we determine the positive definiteness of multivariable polyomial? Is there any MATLAB function available for that?

Can we check the positive definiteness of a multivariable polynomial using MATLAB functions? Of course in literature, there are few complex methods that use tensor algebra. However, before going...

16 February 2021 1,218 3 View

Infinite order of Laguerre?

If Lmn(x) is the Laguerre polynomial of order m and degree n Is there a means of computing Lmn(x) for 1) m goes to infinity 2) n goes to infinity

08 February 2021 6,320 4 View

What are the conditions on projection operators in order to have optimal L^2 numerical estimates?

Mixed finite element methods employ numerical spaces that are, most of the time, something different than the full P^k spaces (polynomials with order up to k). For example, the BDM_k spaces for...

04 January 2021 2,009 2 View

PDF of a Book?

Can anyone provide me the PDF for Distributed Energy Resources in Microgrids (Integration, Challenges and Optimization)?It would be really helpful

27 December 2020 8,015 3 View

How to apply a transient External wall temperature bounday condition to Fluent, using a single polynomial of five degrees?

I have a 5th order polynomial of transient external wall temperature. I need to apply a transient wall temperature Boundary condition to Fluent. Please help me in applying it to apply it in fluent.

25 December 2020 1,231 10 View

When k[x,y] is flat over a certain subring?

Let k be a field of characteristic zero and let a,b,c,d belong to k[x,y]. Assume that k[x,y] is flat over R_1=k[a+c,b+d] and over R_2=k[a-c,b-d]. Is it true that k[x,y] is flat over R=k[a,b,d,c]?...

20 December 2020 6,233 2 View

How to integrate two different dataset?

Hello I have an income dataset and house sales dataset with a different number of records, I need to integrate these two together using R. I thought I need to create a new column in the income...

28 October 2020 8,168 11 View

Converting LipidMAP IDs to HMDB IDs in bulk?

I have a list of LipidMAP IDs for a bunch of metabolites and I need them all converted to Human Metabolite Database IDs. I have over 300 entries so I need a way of converting these IDs in bulk,...

20 October 2020 3,372 4 View

How to tune pi controller for grid connected voltage source converter (space vector PWM) for dc bus voltage and current control in a DC micrgrid?

I have tuned the PI controller for the voltage control loop and inner control loop. But the problem is that it is not stable from a wide variation in the load/bus voltage. On the DC bus, there is...

16 October 2020 7,478 2 View