Which approach to optimize the availability of resources under constraints implicitly linked to other parameters such as cost, time etc ...?

More Lotfi Nabli's questions See All

Where can I find CEL1 endonuclease enzyme?

I need CEL1 enzyme to use it in my laboratory work to complete my PhD thesis. Unfortunately, I didn't find it anywhere. So I'm waiting for any request about companies name where is available or...

31 October 2023 289 3 View

Does the % peak area of a GC/MS chromatogram correspond to the mass percentage?

03 September 2023 6,924 5 View

Detection of methyl methacrylate (MMA) using Thermal Desorption GC/MS?

We are trying to sample PMMA's combustion products and are looking into the amount of MMA in the "smoke". We are looking into air sampling possibilities that don't involve the desorption of MMA in...

13 July 2023 9,675 0 View

How do we use chaos theory in supply chain network design?

How do we use chaos theory in supply chain network design? Please send your suggestion

08 July 2023 794 3 View

Why are my VOC concentrations changing over time in the vial?

Hello, we have standard solutions of VOCs (benzene, toluene, ethylbenzene, xylene, styrene) that come to us in ampules. The solvent is methanol. Once we open these ampules, we transfer them to...

25 June 2023 909 2 View

Why are my compounds evaporating before their boiling point? in thermal desorption tube?

Can someone explain the chemical phenomena behind this? I spike my sorbent bed (tenax ta) with benzene, toluene, ethylbenzene, xylene, styrene, naphthalene, pyrene, and benzo[a]pyrene. The boiling...

15 June 2023 9,075 1 View

Block Sequencing in open-pit mines using Genetic Algorithm?

Hi everyone, I am a Ph.D. student and I am working on the production scheduling of an open-pit mine by genetic algorithm, and I have a problem with converting infeasible sequencing to a feasible...

04 June 2023 9,925 4 View

Error H-bond via Gromacs, Anyone ever experience this error?

When i run the command to calculate the H-bonds ''gmx hbond -s md.tpr -f md_center.xtc -num hb.xvg'' I can't find anything ( the file hb.xvg does not contain the number of H-bonds). I also...

05 May 2023 3,464 8 View

Mass spec and FID?

I was told that it's best to develop my GC detection and quantification method with the single quad mass spec and then switch the method to FID to generate the calibration curves and do...

22 March 2023 9,650 4 View

CST meshing in frequency domain and I-solver?

what is the lowest number that we can consider for Cells per wavelength in cst meshing? Is there any complete tutorial for meshing?

03 January 2023 5,113 1 View

What role do heuristics play in financial decision-making?

financial decision-making

13 June 2024 3,668 2 View

Do heuristic algorithms have low exploration efficiency when the search space becomes large ?

Compared to policy-based Deep RL algorithms, does this category of algorithms have a lower exploration efficiency ? I found this information in the following article: "Optimal energy management...

04 April 2024 225 1 View

Deference between Heuristic & Metaheuristic algorithms ?

Could you tell me the difference between Heuristic & Metaheuristic algorithms ? Some references say that, the first used to refer to classical optimization algorithms and the second used to...

18 January 2024 3,225 9 View

How to do usability testing of sound?

Hi, What all parameters should one test for when it comes to sound? Is there any heuristics available? Thanks

19 July 2023 3,009 1 View

Are "de novo" genes, that have no counterparts, just cases of homology detection failure?

In recent years, a slew of papers have been published claiming that many lineage-specific genes, lacking homologs, arose from non-genic sequences. However, a disclaimer is always made that...

30 April 2023 1,354 0 View

What articles on heuristics are available?

I am interested in any articles that have heuristics in the title.

25 April 2023 2,473 2 View

PAUP : heuristic search for a supertree inference (with a MRP) doesn't stop. Can you help me?

Hi! I'm working on a phylogenetic inference (molecular) with 205 taxa and 5350 characters (7 different genes). I've ever made a phylogeny thanks to a supermatrix. There were some polytomies. The...

11 May 2022 5,056 1 View

Do you have articles where the Extreme Value Theory is used to estimate the global optimum of a combinatorial optimization problem?

I am interested in the use of Extreme Value Theory (EVT) to estimate global optima of optimization problems (using heuristic and metaheuristic algorithms), however, it is a bit difficult to find...

11 April 2022 2,404 2 View

Any recommended books on Hyper-heuristics?

Having come to realize the limitations that metaheuristics have by dint of the NFL theorem, I came across this interesting field of hyper-heuristics (heuristics searching for heuristics) and read...

04 March 2022 302 2 View

Is there some Genetic programming Initialization methods?

I have already gone in deep with the GP initialization method and I found that there are some traditional methods that ensure the diversity in the population on the initialization phase of the GP...

30 January 2022 331 4 View