Could you please provide me a teaching, research, or editorial position in mathematics?

Dear Sir/Madam Could you please provide me a teaching, research, or editorial position in mathematics? You can find my details at https://qifeng618.wordpress.com. When you have any information,...

09 October 2018 9,504 2 View

Could you please help get the list of bibliographies in a newly published handbook by Dennis Bernstein?

Recently, a new handbook Dennis S. Bernstein, Scalar, Vector, and Matrix Mathematics: Theory, Facts, and Formulas, Revised and Expanded Edition, Princeton University Press, Princeton, NJ, 2018....

01 February 2018 4,294 2 View

What and where is the inverse of a concrete lower triangular matrix?

Dear All Could you please tell me what and where the inverse of a concrete lower triangular matrix showed in the picture is? Can you help compute the inverse matrix explicitly? Best regards...

10 November 2017 9,115 13 View

How to compute the inverse of a special matrix?

How to compute the inverse Anxn-1 of the matrix Anxn? For details of the matrix A, please see the picture uploaded with this message. It is better to find a reference in which this problem was...

11 December 2016 4,481 43 View

Can one give a general formula for the product of three different finite sums?

Can one give a general formula for the product of three different finite sums? See the picture attached with this question.

09 October 2016 5,240 14 View

Could you please help prove two integral inequalities in the picture uploaded?

Dear All Could you please help prove two integral inequalities in the picture uploaded to this message? Best regards Feng Qi (F. Qi) https://qifeng618.wordpress.com

08 September 2016 8,553 11 View

How to compute a special Hessenberg determinant below?

How to compute a special Hessenberg determinant showed by the PDF file? Thank a lot.

31 December 2015 5,197 5 View

What is the name of the matrix or determinant showed by the picture?

What is the name (for example, Vandermonde determinant) of the matrix or determinant showed by the following picture? I believe that it should have a name, but I am not sure.

11 December 2015 9,053 9 View

What is the formula for the Bell polynomials of the second kind?

My question is expressed by the picture below. May you provide me a formula and a reference to cite? Thank a lot.

04 May 2015 9,957 4 View

Where can I find the integral analogue of Cauchy-Binet identity?

07 August 2014 8,988 13 View

Looking for Materials with high thermal expansion coefficient and high temperature resistance?

03 March 2021 8,272 1 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

After a reference from Int J Body Compos Res, can any body help?

Hi, I am after the reference below, my library says it cannot obtain a copy either locally or internationally, any help appreciated! Chris Wang ZM, Heshka S, Wielopolski L, Pi-Sunyer FX, Pierson...

03 March 2021 6,193 1 View

Do we need to write protocol for a second study of a systematic review that has been registered and published?

I have conducted and published a systematic review and meta-analysis research with the topic related to public health and health pomotion (protocol was registed in PROSPERO). Now we want to...

03 March 2021 8,920 3 View

How to upload pdf of my articles published?

How to upload pdf of my articles published?

03 March 2021 2,183 3 View

Resistor definition in Piezoelectric bimorph with ANSYS workbench

Hello, good day! I am trying to simulate similar bimorph piezoelectric harvester with below commands. However, the output power doesn't change with resistor value. Please help to find the reason. ET,10,CIRCU94,0 !SET UP RESISTOR R,1,100000 !RESISTANCE VALUE TYPE,10 !SET ELEMENT TYPE E,1,2 !CREATE RESISTOR BETWEEN NODES 1 AND 2 Thanks in advance Regards,

02 March 2021 0 0 View

How to access MSCI KLD Stats and Sustainalytics?

Hello all, I'm currently working on my undergraduate thesis and I'm having difficulties trying to access KLD Stats and Sustainalytics because my campus Airlangga University and apparently other...

02 March 2021 8,525 1 View

Waters 2707 HPLC autosampler problem?

I am using a 2707 waters HPLC device. When I try to inject a sample, it says missing plate or rack. I changed the needle and calibrated its position but I still get the same problem. I even get...

02 March 2021 1,408 1 View

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02 March 2021 932 1 View

Good sites to recruit survey participants on a grad school student budget?

Any good recommendations for participant recruitment for online surveys on a grad school student budget?

02 March 2021 4,293 4 View