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

RIA. How to measure?

When you use RIA, with a control the unknown sample with antibodies, you bare in mind the binding sites of the antibodies. However you still need to measure labelled antigen (radioactive) and not...

28 February 2021 2,133 3 View

How to Eliminate cosine error and abbe error in LASER measurement system(for example Rhenishaw XL80)?

I like to do project in laser measurement system. My objective is to eliminate or reduce the cosine error, abbe error in Laser measurement system. I have Rhenishaw XL80 system. Please tell the...

28 February 2021 4,890 3 View

How to measure angle between laser travel path and machine axis in Laser Measurement system?

25 February 2021 1,987 3 View

Standard curve shifting over time. How do I stabilise the ELISA?

24 February 2021 1,365 3 View

How does the injection volume impact LLOQ and ULOQ in regression analysis (LC-MSMS)?

Hello, I have run into an issue that has sparkled a debate at work: is the LLOQ/ULOQ impacted by injection volume under the following circumstances: 1) Same dilution factor of all samples 2)...

23 February 2021 9,159 3 View

Could the "incoming radiation (net radiation)" values be negative?

Could the "incoming solar radiation" values be negative? What is the difference between "global solar radiation" and "incoming solar radiation"? Which one might be measured negative values?

21 February 2021 7,726 9 View

Using the Pfaffl method: Is it possible that the ratio of the calibrator does not equal 1?

Hi all, I have a question regarding calculations using the Pfaffl method. I have 3 groups per experiment: 1 control group (calibrator) and 2 treatment groups with 6 to 7 biological repeats per...

19 February 2021 8,351 2 View

Can I follow Researchers from Teaching and testing areas?

I want Researchers from Educational Measurement and Evaluation, relating to teaching, learning , academic performance and test validation

18 February 2021 4,757 13 View

How to determine measurement uncertainty of a mass balance?

Hi everyone, I work at a factory plant where they use a mass balance. The problem is that there is an huge difference between the input and output of one element. There are several people working...

10 February 2021 5,764 3 View

XRPD Quantification - Building a calibration curve of drug excipient?

I am aiming to utilise XRPD to quantify a drug excipient within a drug product and have been having a little trouble building the calibration curve to allow for this quantification up until this...

10 February 2021 6,145 3 View