Which of the following statements is true of s-curves in technological improvement? multiple choice a)they typically show that technology goes through initial accelerated improvement, then diminishing improvement, then slow improvement. b) the s-curves flatten when the cost of each marginal improvement increases and diminishing returns to effort begin to set in. c) s-curves in technology diffusion and s-curves in technology performance are fundamentally the same process. d) they are obtained by plotting the cumulative number of adopters of the technology against time.

You will be given two character arrays of the same size, one will contain a number of ships. ships will move around the character array based on which way they are facing and the route they are on. routes are given in the other array. the route consists of '-' and '|' for straight paths, '\' and '/' for curves, and '+' for intersections. there are ships on these routes. ships always face a direction, '^' for up, '> ' for right, 'v' for down, and '< ' for left. any time the ships hit a '\' or a '/' it will turn as you would expect a ship to turn (e.g. a '^' that moves into a '/' will turn right). at an intersection, ships will always continue straight through. all ships move at the same speed, ships take turns moving and all ships move during one 'tick'. the one in the most top left goes first, followed by those to its right, then the ones in the next row. it iterates along the rows and then down the columns. each ship moves one space on its turn moving along the route. your function needs to return the position of the first collision between two ships and the number of ticks before the crash occurred.

Which of the following characters is acceptable to use in a filename? ? / – %

Why are weather forecasts more reliable now compared of hundred years ago