This places limits on the amount of energy that particles in the wind can attain, and so might not account for the quantity of X-rays seen by Chandra in the tail. Another challenge to this explanation is that other pulsars with bow-shocks show bright X-ray emission surrounding the pulsar, and this is not seen for PSR J Also, the brightest portion of the tail is well away from the pulsar and this differs from what has been seen for other pulsars with bow-shocks. Further observations with Chandra could help test this bow-shock interpretation.
If the pulsar is seen moving in the opposite direction from that of the tail, this would support the bow-shock idea.
An American Tail: The Mystery of the Night Monster - Wikipedia
These results were published in the June 1st, issue of The Astrophysical Journal. The Mouse That Soared. De Luca, A et al, , ApJ Astronomers have used an X-ray image to make the first detailed study of the behavior of high-energy particles around a fast moving pulsar. This very old and exotic object turns out to be surprisingly active.
A team led by Dr. The discovery follows the team's The finds are transforming our understanding of how these stellar cinders A small, dense object only twelve miles in diameter is responsible for this beautiful X-ray nebula that spans light years. The rings are being pulled into Saturn by gravity as a dusty rain of ice particles Basically all of the puzzles in the game thus far have been hand designed.
The puzzle solver worked by using a recursive function. So slow in fact that Unity would kill its own process because I froze the UI for so long. So you can look at it on pastebin here: One of the biggest performance issues that I was having with the puzzle solver code is that it was an extreme memory hog. This would be bad enough if the code was just executing straight through, but because each recursion of the function was encapsulated in a new coroutine, the memory problem gets out of control pretty quickly. I even ran into a situation possibly to do with script reloading where the Unity garbage collector failed to clean up and leaked several gigabytes of heap memory.
The natural solution to this is to change the method by which we traverse all possible states of the panel. Ideally, we would like to change this from a recursive function into a loop, but the way in which we should do that is not entirely clear. Not to pat myself too much on the back, but when thinking about how to speed this up, I think I made a clever connection.
Because the panels are essentially series of bits, we can just think about storing the state of the panel in the bits of an integer. Importantly, we also can know ahead of time how many possible states there are in a panel. The formula is as follows:.
The Mysterious Taiji Symbols at Expo 2010
If we then take that number and continually subtract one from it over and over again until we reach 0, we will have covered all possible binary states between. This principle means we can create the following iterative function which will visit all possible states of the panel:. The above code was a bit simplified so that it could be inlined.
In addition to being much more lean on memory, it is much faster. It is also easily resumable with or without coroutines because the state is so simple that we only need to store one variable between runs: Wrapping up, we have done some good optimization work on saving and loading. I suppose this is normal for this stage of development, but it does feel a bit like wading through mud from time to time and has been slowing down development progress.
Furthermore, although it might be appreciably nicer to work with the code after a good long day of refactoring.
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I finished up the meta-tiles in the manner I mentioned in the previous post. Getting them to work alongside the dice face mechanic and the walk-able puzzles was fairly straightforward. Mostly because of the choice I made to use meta-tile numbers for all of the run-time puzzle calculations. Normally, I use a process for prototyping new puzzle ideas that is intended to reduce the amount of wasted implementation work as much as possible.
I start with prototyping ideas on paper. Just drawing stuff out in a notebook of graph paper. Then, if I see some potential there, I will usually implement a bare bones version of the mechanic into the game, without much thought for what it looks like. In this case, I think the mechanic itself ended up being just complex enough that it was pretty hard for me to paper prototype it, and just visual enough that it was difficult for me to digitally prototype it without doing a fair amount of implementation work.
Those kinds of visual puzzles tend to be rather subtle, and as long as the game has programmer art, there are only so many ideas that are going to come to my mind. I still have yet to upload the higher-quality archives for the past 4 development streams, including two I did in the past week.
So look forward to that before too long. Thus far, all of the puzzles in the game have been built around fixed-size tiles.
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The panel on the right is a mock-up of what I want to do. Doing this requires a bit of ingenuity, both within the tech and from a graphic design perspective. As far as the artwork is concerned, we can cover all of the shapes we might want by subdividing each panel tile into 4 smaller sub-tiles, each of which can be one of three different graphics:. Bottom An example panel built from the sub-tile graphics, enhanced to show the individual tiles. This is the most economical choice from an asset design perspective, because although there are more variations required than the 3 sub-tiles, they can all be expressed simply by rotating the tile images.
Four tiles connected, in two ways. Notice that each tile is drawn as a single-width corner, and so we end up with a hole in the middle of the area.
You simply check, for each tile, if it is connected so as to form a corner, and then you additionally check if the tile diagonally opposite that corner is also connected to form a corner, and if it is, you just change the inner corner graphic. This technically requires a fourth sub-tile for the inner corner, which is just a solid color. One of the other challenges was deciding upon a data format to express these meta-tiles, and additionally, how I would interface with that format in the code.
There are two approaches that initially came to mind, both of which have their costs and benefits. I decided to go with the second option to begin with. Both options have their upsides and downsides, but the memory efficiency of the second option seemed most appealing to me for whatever reason. Notice that both approaches are thinking about properties of the individual tiles which make up the meta-tile.
Mysterious Photo of Seo Taiji Surfaces
My general strategy when doing any engineering work and sometimes design as well , is to do the simplest dumbest thing that seems like it will work, and clean it up later. This means I may just implement the first solution that comes to my head. The connections between the tiles are represented by the checkbox buttons. I need the additional rows. This is one of the flaws of the tile-centric approach. This function gets called a lot, and is pretty computationally inefficient. One solution would be to cache the results of these calculations and store the results alongside each tile.
This is equivalent to option 1 from earlier, however if the stored values were only references to the values in the connections array, this would avoid the problem of the data getting out of sync. The next thing we have to resolve is toggling the whole connected piece when the player clicks on it, and handling the highlights when the player hovers over the piece.
Clicking some tiles in an incomplete, but functional form. Since the code that deals with the player clicking on tiles still works with individual tiles, rather than the whole connected group, when the player clicks on any given tile, we have to do a search to determine all the tiles connected to that tile. So, we do the exhaustive search for all connected tiles when the player clicks to toggle. We could do the same search that we were doing when toggling a tile, it would technically work, but doing it every frame seems a bit wasteful.
Of course, we could do some basic optimization and only do the search when we really need to, when the player has moused over a new tile. This is all fine, but something started to smell funny to me. After thinking about it for a bit, I came to a more optimal solution. Until I got fairly deep into the implementation, I had been thinking about this whole problem from the bottom up. I was thinking only about the same uniform tiles I always had, rather than the meta-tiles. A meta-tile, as far as I was concerned was just an emergent result of a system which allowed tiles to be connected to each other.
If we do, then our problem of finding all the tiles that make up a meta-tile suddenly becomes trivial. Additionally, because the layout of the panels in the game never changes in real-time thus far , I have the luxury of baking down any complex calculations that have to do with the panel layout. In this case, I can just bake-down the meta tile groups at startup.
In the baking process, I iterate across all the tiles on the panel and store an integer for each tile, denoting which meta-tile group it is part of. Sometimes among them you see younger and more mainstream Canadians, out to enjoy the mood-lifting benefits of this gentle exercise.
Сведения о продавце
A form of breathing exercise that was developed among Buddhist monks during the Sung dynasty in 12th-century China, tai chi is becoming increasingly popular in the West. The theory of chi is the same principle that guides acupuncture and traditional Chinese medicine. The essence of tai chi is to explore balance between soft and hard and between yin female and yang male.
The practitioner works to balance yin and yang by slowly shifting weight from one side of the body to the other. The systematic forms of tai chi are most successfully practised when the mind controls deep breathing and deep breathing in turn controls body movements. The three elements of mind, breath, and movement come together in what appears to be a state of moving meditation.
It is impossible to practise tai chi in a rushed and frantic manner.