How we can deeply promote the provision and sharing of free souces of remote sensing imagery and data to help our planet sustainability?

First of all, many thanks to the providers of free sources of remote sensing imagery and data such as Landsat and sentinel imagery. Yes this data can be used for commerical applications, but their...

05 June 2018 3,926 7 View

Is it safe to say that the Support Vector Machines and the Kernels will replace the Neural Networks in supervised learning?

As is well known the main concern of the support vector machines (SVM) is to provide the maximum margin between different patterns; and when coupled with the kernels trick or modeling it will...

02 March 2018 731 8 View

What is the accuracy of Free-Stationing in Leica 1205 Total Sation?

I'm curious about the accuracy of the Free-Stationing function in Leica-1205 Total Station. I made a simple experiment by comparing the results from free stationing with their counterparts that...

05 June 2016 1,987 8 View

In terms of measurement: Could we make the following generic definition of Photogrammetry: "What You See What You Measure": WYS-WYM?

In terms of measurement: Could we make the following generic definition of Photogrammetry: "What You See What You Measure": WYS-WYM?

05 June 2016 3,906 0 View

What is the best method to fight the mesquite's trees?

As is well known, there are many places in Sudan that are covered with mesquite trees and they have undesirable effects such as depleting the groundwater storage. On the other hand they have some...

01 February 2016 7,804 3 View

In camera calibration, why can we not recover the coordinates of the principal point from a set of parallel images to the calibration object?

04 May 2015 3,268 1 View

Is any one awrae of low cost hyper-spectral sensor that can be used agricultural applications?

Is any one awrae of low cost hyper-spectral sensor that can be used agricultural applications?

04 May 2015 9,696 0 View

What is the deep connection between spatial resolution and positional accuracy in remote sensing images?

What is the deep connection between spatial resolution and positional accuracy in remote sensing images?

04 May 2015 8,851 0 View

Does the distance between art and science is getting closer?

In areas such as decision making, we can distinguish between art and science in terms of the mechanism that we use for decision. In other words is it a calculated decision or something else?

03 April 2015 690 2 View

Does the global geoid surface undulation could be used to guide the improvement of the local geoid?

Differences between the global geoid such as EGM2008 and the local geometrical geoid could reach more that 70 cm (here in Khartoum-Sudan). Now the question could we use the global geoid to guide...

03 April 2015 1,356 4 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

How to compare two groups with only two measurements?

Hiiiii everyone! I have an enquiry on statistical analysis. I was looking for many forum and it's still cannot solve my problem. I want to compare means of two groups of data but only with two...

03 March 2021 8,796 3 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

What's the best way to measure growth rates in House sparrow chicks from day 2 to day 10?

What's the best way to measure growth rates in House sparrow chicks from day 2 to day 10? Since, the growth curve from day 2 to 10 won't be like the "Logistic curve" it might not follow logistic...

03 March 2021 1,401 3 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

Irradiation data for JAPAN?

Hi, Could you help me to get the latest (2019, 2020) solar resource data for a particular site in JAPAN? PV GIS and NSRDB data are not in reach to JAPAN, I'm looking for some other database for...

03 March 2021 961 3 View

How to increase a model accuracy ?

dear community, my model is based feature extraction from non stationary signals using discrete Wavelet Transform and then using statistical features then machine learning classifiers in order to...

03 March 2021 6,994 5 View