How to measure knowledge/competence gap in IT outsourcing?

Hi all, I am currently writing my master thesis about the knowledge/competence gap between an IT outsourcer and his client. By this I mean the difference of the IT knowledge and the impact that...

20 December 2020 9,228 7 View

When running a regression data analysis on excel, why do I get low p-values when analysing data sets alone, but not when they're together?

When running the regression analysis using a single column for X, I get a fairly low p-value (p < 0.05). When running multiple columns together (which all have p values lower than 0.05)...

28 July 2019 9,953 6 View

What is the appropriate ANOVA to compute when you have 4 independent variables (3 with 2 levels, one with 3 levels) and repeated measures?

Hi, I'm analyzing a set of data with the following: Group: exp vs control, "stage" 1 vs 2, time point: baseline, 1, 10, and time of day: AM vs PM. Both groups underwent each of the conditions. In...

07 November 2018 9,287 3 View

How can you do a hypothesis test in SPSS where you test that the increase of a variable also increase another variable?

Hello, For one of my courses within my master program, I need to do some tests in SPSS. There is one test where I don't know how to do it in SPSS. The question is: Include the alternative...

20 October 2018 5,130 5 View

Could Sodium Thiosulphate Pentahydrate also be used in a Von Kossa staining instead of Sodium Thiosulphate? And can the solution be reused?

08 January 2017 997 2 View

Over what time scale can we expect to store carbon through irrigation and photosynthesis in arid land?

I strongly think and hope very large scale desalination of sea water to irrigate arid zone is the second way to fight against global warming and its consequences as rise in sea level and...

15 February 2015 8,289 18 View

How can solubilize plant pigments after they've been dried ?

We found an efficient method to extract pigments from plants. Just after the filtration, when the pigments were still wet, we use them and paint with a brush. But after are dried and milled, its...

18 December 2013 4,308 2 View

What should be the first quality of an aqueduct supplying freshwater in remote arid areas?

In the followed paper, an sea water solar still aqueduct is presented. What is the main quality of this aqueduct that must be considered? SOLAR DISTILLER AQUEDUCT FOR THE DESALINATION OF SEA...

01 January 1970 5,896 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

Why are the velocities so high in my Boussinesq approximation Fluent simulation?

Hello, I have a mechanism where air rises due to convective flows. In this simulation, nothing is driving the air except this. I understand that the Boussinesq approximation only works for small...

02 March 2021 4,910 3 View

Help request in CST microwave?

im working now on TPV solar cells and metamaterials and i realy need our help in CST microwave i have a tpv cell simulation and i want to extract particullarly the absorbtion of only the active...

02 March 2021 2,246 2 View

Anyone found any research papers on solar furnace design calculations (for solar concentration)?

I am thinking about working on solar furnace with heliostats that concentrate sunlight and heat molten salt, but currently no luck with research. Not a lot of papers based on the subject. (check...

01 March 2021 5,023 5 View

How to size battery banks?

I am designing a small grid connected solar PV power-plant. As the battery's capacity is specified in Ah and demand in kWh. What is the best way to size the battery bank? I have battery price in...

28 February 2021 1,638 3 View

How to design a boost converter for a mppt controller?

I have a doubt on how to select the inductor and capacitor value when I want to implement MPPT controller. This is because we always take a maximum output voltage and current but in this case, we...

28 February 2021 3,637 2 View

How to sample data to increase presence of solar panels in the images?

I am working on creating deep neural network on geospatial dataset and wanted to know how to do the sampling so that I can increase the presence of solar panels in the images. I cannot use entire...

25 February 2021 3,936 6 View

Suppose we have a banana seller cart consisting of 4 wheels, weighing about 300 kg. How much torque motors are needed to pull of push it electrically?

I am thinking of electrifying the street food carts while harvesting energy using solar panels on top.

22 February 2021 4,323 3 View

Gallium Antimonide (GaSb). Can anyone help me to find vendor (provider) to sell GaSb solar cell ?

I am searching of provider (GaSb), I only found this one (https://jxcrystals.com/wp/about/). Can anyone help me?

21 February 2021 1,945 2 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