What is the meaning of writting a comment on a published paper ?

When one writes a comment on a published paper , what is actually the intention of the commenting author ? To point out the mistakes or present complete solution . It is seen that very often...

01 February 2019 6,761 4 View

Can any one suggest how to calculate C when the Hamiltonian neither P nor T invariant ?

[H,P]=/=0;[H,T]=/=0;[H,PT]=/=0; then how to calculate C ? If one take C=0,this implies only zero charge particles exist for this type of H .Mathematically [H, CPT]=0. Or one can tell that...

31 December 2018 8,904 0 View

Why CPT is not a universal symmetry in non- relativistic quantum mechanics ?

In many cases non- relativistic operator even though reflect CPT invariance nature unlikely to reproduce complete real spectra. Is it true ? If so when ? If no when ? Your opinion will be highly...

31 December 2018 462 0 View

How to calculate charge operator for a 3x3 complex mayrix ?

Please suggest matrix method for calculating charge conjugation operator. Suppose one desires to apply matrix to study K^0; K^+;K^- . Then how to proceed .

11 December 2018 4,693 0 View

Do you accept parity violation in Quantum Mechanics ?

In my understanding parity is violated in many hermitian operators with susy or without susy . Interestingly hermitian matrix also comes under this P =/= P^-1

09 October 2018 7,523 0 View

How many + and - ve charges in a C(conjugate operator) ?

08 September 2018 603 0 View

Can I have two charge conjugate matrix for given complex matrix reflecting real eigenvalues ?

08 September 2018 2,381 0 View

No title

08 September 2018 8,205 0 View

Why product of two matrices are non-commutative in nature.?

07 August 2018 9,564 4 View

Can you suggest an application on matrix eigenvalue method to Economics or Business ?

Please suggest a suitable problem in Economics or Business where one can apply matrix eigenvalue method ? Give details. B.Rath

07 August 2018 2,805 1 View

What is the best way to keep an anaerobic chamber anoxic in the absence of hydrogen?

I'm a graduate student who works with an anaerobe, so I often work in an anaerobic chamber. I've been working on an assay that involves the steady-state of the quinone/ quinol pool. Anoxic...

03 March 2021 2,971 1 View

Good sites to recruit survey participants on a grad school student budget?

Any good recommendations for participant recruitment for online surveys on a grad school student budget?

02 March 2021 4,293 4 View

Is there a recitation score bank system for fair evaluation and assessment of student recitation?

In actual and virtual class, even if there is rubric for recitation, students may still fail to receive fair grades or scores. Others are active in recitation and others are not or others may fail...

26 February 2021 8,387 3 View

Do you think there is cognitive oversaturation in the current pandemic? What impact can this have? And other manifestations?

Dear colleagues, Do you think there is cognitive oversaturation in the current pandemic? What impact can this have? And other manifestations? The question is mainly aimed at adolescents (pupils,...

23 February 2021 7,796 4 View

Must a control group to be in the same semester that a experimental group for a study in education?

Hi everyone, I'm researching about mobile learning in higher education. Due to the small number of the students in the semesters, I cannot have a experimental and control group together. I'm...

22 February 2021 3,653 11 View

Latent profile analysis based on two variables/sources of data?

Hello, for my master project, I would like to conduct a latent profile analysis about self-regulated learning skills. I would like to take two different measures into account when creating the...

21 February 2021 2,326 3 View

Where can I find raw quantitative datasets on ecosystem services?

I'm an Undergraduate student on the search for a research topic which has to involve any ecosystem service(s) and a response to environmental change. I'm looking for raw quantitative data sets (I...

19 February 2021 5,911 2 View

Person-Codes for questionnaires in longitudinal studies: Is there an easy solution for better matching-rates?

Hi, I have a problem regarding matching of longitudinal data in my field of research (university students). We have a Person-Code for matching data measured in different time points, but 30%+ of...

17 February 2021 3,075 4 View

Level 1 pre-post multilevel regression: Panel data or ANOVA approach?

Dear colleagues, I am currently teaching myself in multilevel analysis using educational data. I found few to zero literature on basic analysis methods. In my context we frequently use level-1...

17 February 2021 9,378 5 View

What are the available keys and descriptions for the identification of lice and fleas in domesticated animals?

I am an undergraduate student at the University of Peradeniya Sri Lanka, currently working on ecto-parasites in domesticated animals. I found difficulties in the identification due to a lack of a...

15 February 2021 277 1 View