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A bunch of rocks The surface of Titan. So you give someone an inch and they want a yard. Given them a rocket ship and suddenly they want a star ship. SF writers want to use exotic settings on alien planets, but the real estate in our solar system mostly looks like a bunch of rocks. I know that those spoil-sports at NASA have ruined our solar system for SF writers since their nosy space probes failed to find dinosaur-infested jungles of Venus and scantily-clad Martian princesses.
Why not turn my rocket ship into a star ship? The basic problem is that interstellar distances are freaking huge. The introduction begins like this: At an ordinary speed — say, a reasonable pace for a car in a megalopolitan traffic, two kilometers per minute — you would consume almost nine million years in crossing it.
Beta Virginis was thirty-two distant. There is a glowing dot for the Sun, and one millimeter away is a microscopic speck representing the Earth. Imagine this ten-centimeter model floating above your palm.
This would put Proxima Centauri, the closest star to the Sun, at about meters away. Glance at the ten-centimeter solar system in your hand, then contemplate the nearest solar system four and a half city blocks away. And the center of the galaxy would be about kilometers away about mileswhich is a bit more than the distance from Chicago, Illinois to Houston, Texas.
How long do you think it is going to take to travel such distances? As an example, the Voyager 1 space probe is currently the fastest human made object with a rest mass, zipping along at a blazing This means that in the space of an eyeblink the little speed demon travels a whopping eleven miles!
Which means that if Neanderthal men had launched something as fast as Voyager 1 to Proxima, it would just barely be arriving right now. Neanderthals are extinct so not even their descendants would reap the benefit of any scientific broadcasts from the Proxima probe.
A similar argument could be used against any interstellar probes we could launch.
This leaves us with two alternatives: Well, three, if you count "faster than light", but that will be covered later. As Gordon Woodcock put it, the three methods of travelling to other stars are " go slow ", " go fast ", and " go tricky.
A society capable of building a successful interstellar generation ship will also be capable of building an interstellar relativistic ship simply by virtue of its tech level. And this is not even discussing cryogenic sleep. It is not necessarily simpler to build a successful, interstellar generation ship than it is to build a successful, interstellar relativistic ship, and the latter is preferable for almost any use case.
The one major advantage of generation ships is probably payload.
Distance between stars is huge, traveling said distance slower-than-light will take a huge amount of time, human beings have a very limited lifespan. Lifespan There are several ways of dealing with the lifespan issue.
Digital Crew Since every atom of mass is a penalty, the logical starship would just carry a master computer and no human crew. This avoids the payload mass of the crew, the habitat module, the life support system, food, water, and everything.
The starship might be under a meter long, which would make this concept the lowest mass of all the slowboat starships. However, nobody wants wants to read about the adventures of a computer yes, I know there have been a couple of SF stories on this theme, but it requires extraordinary skill on the part of the author, and the stories are not wildly popular.
With the exception of the Bolo stories by Keith Laumer et al. Enter the "digital crew" concept. You postulate technology capable of "uploading" human brain patterns into a computer.
Even companies that did not develop a sophisticated performance analysis system can easily apply our gross margin analyses. Our methodlogy is based on a holistic approach by integrating the 4 key drivers of improved profit margin – pricing, cost, volume, mix – with the value delivered to the end customer. This site provides open data about natural resource management on federal lands and waters in the United States, including oil, gas, coal, and other extractive industries. Dec 11, · The gross margin has improved mainly due to the rising proportion of service sales (which include third-party sales) in overall sales, as these sales have lower cost of goods sold.
This also allows the author to pontificate upon the nature of reality, ask if we are actually unaware virtual people in a virtual reality, and stuff like that. The point is the author is allowed to write stories about human beings, but the digital humans and their digital environment take up zero mass.
One could add equipmment capable of manufacturing artificial bodies for the crew from local materials upon arrival at the destination. However, the advantage of a digital crew ship over a seed ship is the lower ship mass due to the absence of frozen embryos, artificial wombs, and robot mommies.
Adding artifical body manufacturing facilites would reduce or remove the advantage.When undertaking financial analysis it is important to understand the method of depreciation.
A Chapter 7: Financial Analysis and Interpretation Gross profit margin (GPM), sometimes called the operating profit margin, is the. Keywords: burger king target market analysis, burger king segmentation Burger King known as Insta-Burg King was established in but then company ran into financial difficulties and was taken over by David Edgerton & James Mclamore.
International Review of Business Research Papers Vol. 4 No.5 October-November Pp The European solvency margin: an update for Italian non-life insurers. Sep 27, · Conducting a market analysis can help. The market analysis isn’t just one part of a successful business plan—it’s one of the best reasons to write one.
Pricing and gross margin: This is where you’ll lay out your pricing structure and discuss any discounts you plan to offer.
Your gross margin is the difference between your costs /5(95). REASONS FOR UNDERTAKING INTERNATIONAL COMPARISONS the difference between the value of gross output and variable costs is called the gross margin, whereas in Canada gross margin is now defined as the excess of total revenue over the cost of goods Chapter .
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