Single-phase synchronous machine models?

Hi there, In low frequency railways it is common with single-phase synchronous machines. Anyone that knows how to model them dynamically in a trustworhy manner? Moreover, there are many...

18 November 2020 1,357 5 View

I am looking for someone interested in biodiversity in Laos especially butterflies.?

I have a student who during long time has studied the moths in central Laos. She also document them from larvae to butterfly. She speaks English and is looking for possibilities to make a bachelor...

11 June 2020 6,258 2 View

Do anyone with interest in cruise guest behaviour join the EuroCHRIE2020 conference?

Other researchers with specific knowledge, experience and/or interest in cruise guest behaviour (spending)? Best regards, Lars Falk

24 February 2020 8,456 1 View

SPSS results very low?

Dear all, I'm currently conducting the tests for my masters trying to analyze the outcome from regression results. Unfortunately, no matter what I try the regression coefficient always shows very...

23 October 2019 8,444 3 View

What's the most processive PCR enzyme?

I'm looking at a scenario where the property that matters most is processivity. I can live with elevated error rates.

16 April 2018 7,140 2 View

How reliable are calculated anharmonic frequencies with those warnings in the Gaussian output?

Dear RG Community, i am new to Gaussian and Computational Physics (/Chemistry). My goal is to calculate the 'IR spectrum' of liqiud Acetonitrile CH3CN (C3V point group) and its isotopologues...

05 December 2017 9,305 8 View

Does restricting a notion of rings to finite-dimensional algebras make it a brand new notion, with all implications thereto pertaining?

self-explanatory to the extent that I stay polite

18 October 2017 7,020 4 View

Looking for literature and tests for master-thesis about the relationship between work-clothes (suits vs. casual) and motivation, stress, engagement

Current master-thesis is about organisational psychology and focusses on the relationship between working clothes and their effects on work-related aspects like motivation, distress and...

26 June 2017 2,665 2 View

Where can i find simplistic but relevant equations describing the rail curvature running resistance of trains?

What are the main components that govern the curvature running resistance? Wheel radius? Train speed? Rail curvature? What more?

31 August 2016 1,543 6 View

What models for Rahbek and Mosconi method for exogenous variables in VECM?

25 May 2016 9,565 3 View

Which is suitable for use with Python? MySQL or SQL Server?

Which is suitable for use with Python? MySQL or SQL Server? What is your suggestion?

01 March 2021 3,422 3 View

How can i resolve the "final solutuin is not converged" error in Comsol for my heat transfer simulation??

I have been trying to simulate heat transfer problem in Comsol 5.5 for long time but it always throw an error stating: "Failed to find a solution. Maximum number of Newton iterations...

28 February 2021 8,626 3 View

High aspect ratio hexahedral mesh optimization solver?

I am interested in evaluating mesh optimization solvers that converge to high aspect ratio unstructured hexahedral grids. In other words, I am interested in a solver that optimizes warpage,...

26 February 2021 7,279 2 View

How to plot the probability paper of Gumbel distribution using R programing?

In R-studio, there are many commands of Gumbel package. Arguments are also different. I`m asking about the alpha parameter of the Copula which must be greater than 1. If this is the one used to...

25 February 2021 5,229 3 View

Error in comsol?

Dear respected researchers, while performing CFD analysis in Comsol it's showing like this Error: Nonlinear solver did not converge. The maximum number of Newton iterations reached can...

24 February 2021 249 3 View

How to interpolate from a time-series database ?

Hi, I am having trouble with a problem, in the field of Optimal Control and the generation of optimal time-series. Let's consider a system, whose dynamics are represented by dx/dt =...

24 February 2021 9,105 2 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

Implementation of chance-constrained optimization problem via scenario approach?

23 February 2021 7,826 2 View

I am looking for a simple software program to model 3D chemical bonds. The purpose is to generate high-quality graphical abstracts. Any suggestion?

Hello everyone: I am looking for a simple software program to model chemical bonds. The purpose is to generate a high-quality graphical abstract for a top leading journal in the field of...

23 February 2021 8,012 3 View

How to estimate 2SLS with different instruments for different endogenous variables?

To be specific, I want to conduct an IV regression in stata with the following three equations. EQ1: Y1 ~Y2 Y3 X EQ2: Y2 ~ Z1 EQ3: Y3 ~ Z2 Both Y2 and Y3 are endogenous. However, Z1 and Z2 are...

23 February 2021 6,266 3 View