How does a Bi-Static FMCW radar detect a Zero Doppler target?

27 September 2020 8,370 6 View

Problem on reliability statistics - negative Cronbach's alpha?

In my study I want to see whether 3 items in a questionnaire relate to autonomy through a reliability analysis. The following three items are relevant I think: - Availability of task enrichment...

25 July 2018 3,223 2 View

What techniques can be used to locate fractures in underground metal water delivery pipes?

I recently met with an senior executive of a Water delivery company. #1 concern was the inability to locate leakage in underground mains pipes. Typically 40% of water is lost between source and...

24 May 2018 4,311 3 View

Would you like to participate in studies involving surgical outcomes, NSQIP, NIS, SEER, etc?

Seeking co-authors/collaborators to participate with me in database studies involving NSQIP, NIS, SEER, NAMC, etc. This is a good opportunity for post-docs and research fellows who can work...

04 November 2017 6,424 2 View

How many kinds of distance defined on graph in graph theory?

04 April 2017 4,384 13 View

How can I dissolve sodium palmitates in pure ethanol?

18 June 2016 784 3 View

Cell size units in point to raster?

I have metadata in my .dat file that tells me that my cell size is 0.200 degrees longitude. I want to import this file into GIS and convert my points to raster. My file is very simple: it has x, y...

29 September 2015 7,692 3 View

How can we assess the amount of sand available in a river and a lake?

What are the measures to be taken for controlled sand mining. Excess sand mining has become a big problem due to rapid urbanisation and development. Uncontrolled sand mining has now resulted in...

30 January 2014 5,444 1 View

Seeking collaborators for medical/surgical research

I am seeking collaborators for large medical/surgical database studies involving NSQIP, NIS, SEER, NAMC, etc. This is a good opportunity for post-docs, medical students, MPH/Epi students, and...

01 January 1970 7,619 7 View

error in running a model in Abaqus

Excessive rotation of nodes in node set ErrNodeExcessRotation-Step1

17 August 2021 0 0 View

error in modelling model in Abaqus

Excessive rotation of nodes in node set ErrNodeExcessRotation-Step1

17 August 2021 0 0 View

MGL tools

20 June 2021 0 0 View

i have some problem with chtMultiRegionSimpleFoam

--> FOAM FATAL ERROR: Maximum number of iterations exceeded From function Foam::scalar Foam::species::thermo::T(Foam::scalar, Foam::scalar, Foam::scalar, Foam::scalar (Foam::species::thermo::*)(Foam::scalar, Foam::scalar) const, Foam::scalar (Foam::species::thermo::*)(Foam::scalar, Foam::scalar) const, Foam::scalar (Foam::species::thermo::*)(Foam::scalar) const) const [with Thermo = Foam::hConstThermo >; Type = Foam::sensibleEnthalpy; Foam::scalar = double; Foam::species::thermo = Foam::species::thermo >, Foam::sensibleEnthalpy>] in file /home/ubuntu/OpenFOAM/OpenFOAM-4.1/src/thermophysicalModels/specie/lnInclude/thermoI.H at line 66. FOAM aborting #0 Foam::error::printStack(Foam::Ostream&) at ??:? #1 Foam::error::abort() at ??:? #2 Foam::heRhoThermo >, Foam::sensibleEnthalpy> > > >::calculate() at ??:? #3 Foam::heRhoThermo >, Foam::sensibleEnthalpy> > > >::correct() at ??:? #4 ? at ??:? #5 __libc_start_main in "/lib/x86_64-linux-gnu/libc.so.6" #6 ? at ??:?

24 March 2021 0 0 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

Arena simulation - how do i model the following model in ARENA (see description) (new to ARENA)?

Hello, I'm fairly new to ARENA and I have the following problem: I have two queues in which, in each queue, a different order type arrives (both having an arrival rate of exponential 10). Order...

02 March 2021 2,431 3 View

How to repeat an operation on an atom selection for multiple times in PyMol?

Hi, I am trying to construct a multi-layer fibril structure from a single layer in PyMol by translating the layer along the fibril axis. For now, I am able to use the Translate command in PyMol...

02 March 2021 4,569 4 View

Can we distinguish the type of free fluid inside the pelvic and abdominal cavities whether blood or serous fluid using the ultrasound?

during ultrasound examination of acute abdomen, sometimes we see free fluid , can we know the type of fluid ,whether blood or not , using ultrasound only? if yes , what are the sonographic...

01 March 2021 7,476 4 View

What is the difference between genotype and haplotype data in the ped format?

Hi everybody In the ped format for genotype, alleles of any SNP are represented by two columns (one for each allele, separated by a space). Is a column sufficient for the haplotype to...

27 February 2021 1,965 1 View

How to calculate Ligand-active site distance in a ligand-protein complex from MD simulation?

I have run a MD simulation of a ligand-protein complex in GROMACS using CHARMM forcefield. Reviewer has asked me to calculate Ligand-activesite distance and binding free energy of ligand with...

27 February 2021 4,703 1 View