Why do people always wear a same pair of shoes?

Gamer_Stix · 6 days

I've noticed too that he moved like an airbender. I bet there is more behind that and that there will be an episode about it (every fights he evades attacks without blinking ;-0 )

NeonTigerVG · 7 days

Amon is actually an airbender and somehow (maybe Aang told him how) he learned how to take away bending power. Because only the avatar can do it but the avatar was also an airbender and no other airbenders were known (they were all killed). Maybe like fire has lightning, water has ice and healing and earth has metal bending. Airbending has the "takepoweraway" bending technique. Maybe Aang and Amon where friends one day because Amon was an airbender too, they probably would have spent a lot of time together if Aang found another airbender and was not all alone. But, somehow they grew apart, maybe because of conflicting believes about equality or the non-bending people and the Amon we know today was created out of spite or something worse, love...

Gamer_Stix · 7 days

Why can't bending evolve? If people evolve and the technology evolves, then bending can surely evolve too. Look at the metalbenders, they evolved out of earth benders, so maybe each type of bending has a more powerful technique yet to be discovered. Like (water-ice-healing(-humanbending), fire-lightning, earth-metal, air-...) Maybe the air bending evolution is the removal of bending-power and Amon is actually an airbender not of the avatar lineage...

batfish · 13 days

It looks like an european hoverfly (Helophilus pendulus), but it lacks the yellow/black stripes on the thorax. There are a lot of hoverfly species that look alike and are very difficult to name correctly. Maybe it's one of these species Syrphus ribesii or Syrphus torvus. One of the more advanced ways to determine the species (besides the obvious abdomen drawings) is by looking at the colours of the legs (tarsus, tibia, femur and trochanter have different yellow-black colour combinations).

Dangerrios · 1 month

don't have time for this

Eluxiver · 2 months

I think I found it myself, this does the trick:

if any(M >=2)

It was actually easy but took a while to find, I'm not that familiar with matlab :-)

Eluxiver · 3 months

Thanks, I'll give it a try.

Eluxiver · 3 months

The model for my thesis uses individuals of different "species" who can reproduce sexually (or asexually), have a death rate and birthrate and can disperse (so this is the population biology part). They also have a sort of genetic code that makes them suited for a specific habitat (this is where the "species" differ). The program has a range of different habitats and the individuals can randomly disperse between them, their fitness depends on the similarity between the habitat and their genetic code (this means that some individuals, the ones that are best suited for that specific habitat, will have a higher fitness and will compete better and even out-compete the other ones).

They can also disperse (with a specific dispersal rate) to different habitats, the amount of dispersal (or the dispersal ability) has an effect on how well the individuals can survive in the whole community (this is actually the trade-of between competition and colonization). If they can colonize a habitat faster than an other species they can stay in that habitat, even if the other species is a better competitor. (this is more the community ecology part). (other effects of different dispersal rates in different species and, competition strength relative to their dispersal rate will be added here)

Also, the genetic code of an individual can change over time through mutations (this is what I mean with evolution), but also by selection because of the fittest individuals will have the most offspring (this is what I mean with selection (I know selection is part of evolution but I wanted to make this difference because a random mutation could be beneficial for the individual as it could mean that, after dispersing to a new habitat, there is a perfect match between the two, just by chance, and they out-compete all the other ones. Selection would never cause this because they would be selected for the habitat they are currently in and not for one they could disperse to)

The meta community aspect is also a part of my thesis because we have multiple habitats and multiple communities in different habitats. Dispersal from one "community' to another has its effects on the outcome of the model (patch dynamics, species sorting, mass-effects).

The problem is not to get all these different aspects in one model (this is already done and you can see the different effects of the different mechanisms). The problem is that when I try to write an explanation of a specific aspect of the model, I have to explain to much and everything is intertwined with everything and that's making it so hard to write a relative compact introduction. I'm looking for a way to explain everything but in gradual steps or separate parts, without over complicating everything (or writing to much basic info, or writing stuff two times).

One of the comments describes the biogeography part as a basis, and this was actually also one of the options, but then I get into trouble with different scales. On the level of a community, time is not that long and space is not hat big as in the biogeography context. The same mechanism can be described in different ways depending on the scale you are looking at it. (and I already have different scales between the population and the community which I have to address)

I'm just searching for some previous work on combining these different disciplines and see how they done or tried it so I can write my own version of it with the aspects that are important for my model.

Eluxiver · 3 months

So it is actually possible, cool :-) Good luck with it, and don't hit any satellites :D

Eluxiver · 3 months

couldn't you reach a much larger speed than 300mph when you are already at an altitude of 25 km? I don't know how to calculate this, but if a model rocket can reach 300mph in a normal atmosphere, what speed could it reach if its starts at 25 km, where the atmosphere is much less dense?

Eluxiver · 3 months

yeah :-) but trying is fun

Eluxiver · 3 months

:-) looks cool, downloading the demo

Eluxiver · 3 months

you mean it would spin out of control or something if you didn't have some kind of gyroscopic steering or something? Never taught about that. So an attempt to do this just to get a higher altitude (no lateral speed) would probably fail if you just used a regular model rocket?

Eluxiver · 3 months

What about shooting a rocket in a curve so that you first get more altitude and later on some perpendicular speed? Would you get high enough to have significant less resistance?

Eluxiver · 3 months

but couldn't you slow down the rate of decent by having some speed, some of those model rockets do get up to 300 miles per hour and this is at a lower altitude (so denser atmosphere), could it be possible to have one rotation around the earth?

Eluxiver · 4 months

Eluxiver · 4 months

Saw that one coming :-)

Eluxiver

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