Black hole and dark energy?

This is a continuation of the previous post, namely, "Black holes and dark energy": In the equation posted in the last post, there was a relation between the cosmological constant, the...

21 December 2018 6,159 3 View

Which is more reactive to Cu plate? pH 4 or pH 9.2? and Why?

Which is more reactive to Cu plate? pH 4 buffer solution or pH 9.2 buffer solution? and Why? How will they effect the Cu plate if I dip it in one of those solutions?

25 January 2017 5,105 1 View

Huge cut-in voltage from 1/C2- V plot for p-n diode?

Hi . I have performed a Capacitance-voltage experiment for my p-n diode sample. I plotted the (1/C)^2 - V and found that the Cut-in voltage is very high (more than 10V). It should come like...

26 August 2016 3,952 1 View

What are possible areas of application of a Notch filter which is tunable in the range 500 Hz to 5 kHz?

The Notch filter has Q> 10 with attenuation more than 35 dB. One can adjust its notch frequency in the range 500 Hz to 5 kHz.

06 April 2016 3,411 3 View

How the Q-factor of a Notch filter is determined?

Suppose, a simple second order notch filter has pass band gain -1 dB and attenuation at notch frequency is -37 dB (this is the maximum attenuation). Then which shall determine the band width? The...

23 February 2016 7,218 17 View

Can anyone help me to knockout/ mutate nifL gene (in plasmid) Azotobacter crucocum?

Molecular biology

24 July 2015 8,743 6 View

How can the bandwidth of a GIC-realized inductor be controlled?

06 January 2015 3,244 2 View

Physics: Why do we describe light by referring to its wavelength, but microwaves and radar pulses by referring to their frequency?

In physics, the description of the properties of light generally refers to its wavelength (nm), while in the range of microwaves and radio waves we refer to the frequency of a signal (e.g. kHz or...

03 March 2021 1,682 3 View

Why should we choose deep learning to machine learning? Why is CNN better for image classification? Can I get Typical Answer?

What Characteristics makes CNN work better?

03 March 2021 1,458 4 View

What are some of the research gaps in machine learning and artificial intelligence in africa?

i would to know some of the research gaps in the artificial intelligence field in most african countries.

03 March 2021 6,145 3 View

Anyone plz suggest relevant topic for research in image processing+Deep learning.?

I have selected brain tumor images ...but now found that already lots of research done n this topic.

03 March 2021 5,774 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

Is there any effect of different colours of light (white, red, yellow, blue etc.) on the rate of photosynthesis? If yes, why?

Light is inevitable for the process of photosynthesis reaction. Naturally sunlight plays the vital role for this process. Light may be of different colours like white, red, yellow, blue etc....

02 March 2021 7,890 2 View

Can you share me how teacher education is managed in your respective national educational system?

I feel that the practice in teacher education in my country is below the expected performance level due to very poor management system. Hope I will learn something from your experiences.

02 March 2021 1,516 4 View

Can NFL theorem be valid in infinite search space in ML?

NFL theorem is valid for algorithms training in fixed training set. However, the general characteristic of algorithms in expanded or open dataset has not been proved yet. Could you show your...

01 March 2021 1,189 3 View

What is the difference between L1 and L2 regularization in machine learning?

L1 and L2 regularization

28 February 2021 4,187 3 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