For what purposes is it advisable to use small solar linear-focus collectors (PTC, Fresnel reflectors)?

For example, the length of the collector is up to 10 m, the diameter is 1.5-2 m. It seems that flat collectors are usually used for individual solar heating and / or hot water supply.

13 January 2021 8,928 3 View

Why "solar" countries not paying due attention to the questions of solar energy using ?

In particular, electricity generation. Maybe in developing countries.

06 December 2020 3,899 12 View

What is the optimal opening (rim) angle of a solar parabolic (dish) concentrator ?

23 July 2020 3,403 3 View

What are the standard books of postgraduate or master degree or doctor for Physiotherapy students , please write title and outher name?

Iam from kurdistan , physiotherapist study at hmu , I want to list of books that good for master physiotherapy . Thanks.

13 July 2020 9,600 7 View

Parallel Computing of MCNP?

Hi dear I want to use MICH2 for parallel computing of MCNP. I Try it nut MPIEXEC run multi-time instead of running parallel? Can anyone help me? my command is here: mpiexec -n 2 -noprompt...

03 October 2019 3,106 2 View

How to perform k-fold cross validation for Neural Network in IBM SPSS Statistics?

I am Using IBM SPSS Statistics for Neural Networks but I am facing difficulty in cross validation of Model. Kindly suggest how to perform K-fold validation in SPSS Statistics. Thanks

11 October 2018 1,499 2 View

Is it possible to have gram positive Azotobacter species by gram staining procedure ?

24 January 2016 8,966 3 View

Is it necessary to prepare FMO controls for each sample to be analyzed when there are two or more samples available?

Hi, I am analysing human peripheral blood by flow cytometry and I have to prepare FMO controls. If I have two or more samples from different persons then should I need to prepare FMO controls for...

27 October 2015 3,771 2 View

Why does through activated sludge process treatment quality of Effluent found satisfactory but through chemical process not very well coagulation?

I have collected effluent sample from the equalization tank of a Textile Dyeing factory ETP. I found TDS- 3000 ppm, pH-11, COD-900 ppm, TSS nearly zero. I have filtrated with 0.45 micron filter...

01 January 1970 4,026 2 View

How to repeat an operation on an atom selection for multiple times in PyMol?

Hi, I am trying to construct a multi-layer fibril structure from a single layer in PyMol by translating the layer along the fibril axis. For now, I am able to use the Translate command in PyMol...

02 March 2021 4,569 4 View

Timeout error!! Processor in the loop (PIL) using STM32F4 Matlab 2018a?

Dear Researchers I am trying to perform a PIL simulation using STM32F4 Discovery board and comunication serial USB TO TTL. During simulation I receive the following timeout error: An error...

01 March 2021 2,327 1 View

How to eliminate Steady state error from Reinforcement learning genetic algorithm code?

The following code (see 1st 2 images attached) is used to produce PID controller values that are designed to control the system (G). The code finds the PID controller values (noted as k) by using...

28 February 2021 6,560 14 View

How to prevent ANFIS Model from negative prediction values in MATLAB?

I have input and output data set for "ANFIS modeling in MATLAB", and I am getting some negative predicted values of output in testing. However, the predicted values of output in training are...

28 February 2021 3,459 3 View

How to modify Johnson cook equation in ABAQUS?

I wanted to add an extra parameter to the existing Johnson cook equation in the ABAQUS simulation. How to add those extra parameters. Ref: A modified Johnson-Cook material model with strain...

28 February 2021 4,841 3 View

What is Flat Lens Antenna?

28 February 2021 5,433 3 View

Can impedance of antenna be less than 50 ohms?

I am simulating helix antenna in hfss, right now, giving excitation with 50 ohms port. When I see the results of Z parameter (real). It shows lower than 50 ohms. Do not understand, if it can be...

27 February 2021 4,218 7 View

How does an AC-DC power supply Flyback Converter Based USB Charger Model using Matlab/Simulink looks like?

I am required to learn about Flyback converters and I got stuck not knowing to full design of the power supply flyback converter Based USB Charger Model using Simulink, especially the design model...

25 February 2021 5,435 2 View

Please. Could you help be in implementing Fractal Discrete Cosine Transform algorithm in Matlab?

I do need the Matlab code of Fractal Discrete Cosine Transform (FDCT). Can anyone who has already implement this code, help me with the implementation of this transform?

24 February 2021 5,602 2 View

D2D implementation in Matlab in Vienna LTE software?

Hi Hope you are well. Can you please share your code for D2D implementation in Matlab. I want to implement D2D in Matlab based Vienna simulator and struggling to deploy D2D. Thanks

24 February 2021 9,378 3 View