Are preprint servers like arXiv.org an effective way to publish?

I just read the following article from Physics Today called Commentary: On the quality and costs of science publication: https://physicstoday.scitation.org/doi/10.1063/PT.3.4259...

07 August 2019 1,727 3 View

What sort of accuracy is needed for estimation/measurement of ionospheric synthetic aperature radar (SAR) data?

When using models and/or measurements of the ionospheric Faraday rotation (FR), what sort of accuracy is needed for applications such as synthetic aperature radar (SAR) data/image correction?...

02 March 2018 2,748 0 View

Does the ambiguity in Faraday rotation measurements occur at 180 or 360 degrees?

01 February 2018 5,567 0 View

Why do certain species of fish have two ranges of peak response to different wavelengths of light?

Most fish have a range of wavelengths which they respond to (e.g. see electroretinography studies by researchers at the Virginia Institute of Marine Science):...

04 May 2017 7,460 1 View

What is the BEST way to generate quiet day curves for riometer data?

There are several techniques for baselining riometer data. For example, CANOPUS (NORSTAR) Riometer quiet day curve generation is much more automated that what is available from some other...

02 March 2016 872 0 View

What effect do (SuperDARN) HF radar have on riometer data?

Can anyone please give a brief synopsis of the effect that (SuperDARN) HF radar have on riometer data with suggestions for further reading?

02 March 2016 7,135 0 View

What are the boundaries of the ionosphere?

The Earth's ionosphere is a region of Earth's upper atmosphere between approximately 60-1000 km altitude, comprised of free electrons, different molecular ions and neutral particles, where the...

01 February 2016 3,141 5 View

Is anyone familiar with a figure that compares day and night side electron density profiles for the high latitude ionosphere?

Hello, I am looking for a figure (with reference) that is similar to the one attached (replyfig.png), which compares the day and night side ionospheric electron density profiles typical of...

01 February 2016 7,725 7 View

What is the best way to distribute/publish a dissertation?

Since completing my MSc (physics) I have been emailed by several questionable 'new' publishing companies such as Lambert Academic Publishers, Scientific and Academic Publishers, and Scientific and...

06 July 2014 3,688 6 View

What radio science journals are free of cost that have a high reputation and impact factor?

Hello, I have a research paper in preparation but am uncertain whether I will have enough funds available to publish in the journal that I usually publish in (Radio Science). The topic is...

01 January 1970 4,561 4 View

How to define tie constraint between rigid body and another part in dynamic explicit model of Abaqus?

Hi dear researchers I connected a rigid body into the part of my structure by tie constraint and then I added displacement to rigid body, in static general step every thing is fine and these two...

28 February 2021 3,442 2 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

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 to compare 2 samples recruited with different sampling methods?

If I want to compare characteristics of 2 groups of patients, one group is recruited from a random sample of the general public while another group is from a sample with a fixed gender (male to...

26 February 2021 3,526 3 View

How to approach CFD simulation results of a flow past a cylinder?

Hi all, I'm doing a transient simulation of flow past a rectangular cylinder close to the free surface. As far as I'm concerned, the common practice is to discard the initial stages of the...

25 February 2021 1,348 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

Do you consider undergoing a structure literature review / Meta analysis and getting numerical findings sort of quantitative method?

I am looking for a classification of the research methods included in literature review papers or Meta analysis ones .

22 February 2021 1,131 4 View

How to overcome convergence issues in concrete arch models?

Hi, I have modelled a three-span arch bridge with soil fill over along with pedestals. The FE modelling is done in LUSAS with HX8M solid elements (i.e. 3D solid modelling). The non-linearity is...

20 February 2021 1,346 2 View

Can I do two kinds of mixed method in explanatory research?

Dear distinguish professors and scholars, I have a research in measuring two kinds: think tank capacity and research impact on policy. Can I do two kinds of mixed methods in order to find, "Is...

20 February 2021 6,897 1 View

How to model rupture in geogrid in abaqus?

Hi researchers I wanna model tensile test on geogrid in abaqus, so I added displacement to one side of geogrid and the other side of geogrid is constrained completely, everything seems normal but...

19 February 2021 2,195 2 View