What is a TinyOS component?

What are the design goals for TinyOS?

With reference to the device driver interface to the eCos kernel ( refer earlier Table ), it is recommended that device drivers should use the _intsave() variants to claim and release spinlocks rather than the non- _intsave() variants. Explain why.

Describe how the loss of non-target organisms leads to even greater pesticide use.

Read Elisa Guttierez' journal of her family vacation in Quebec, Canada. Then select the best completion to the following statement.

Nous sommes partis en vacances de Los Angeles dans notre nouvelle voiture hybride mercredi soir. Pour arriver le plus vite, nous avons pris la route qui va tout droit au nord jusqu'au Canada et ensuite, nous sommes all$\'e$s $\`a$ l'est en direction de Montr$\'e$al. Apr$\`e$s cinq jours de route, nous sommes enfin arriv$\'e$s $\`a$ notre destination. D'abord, nous avons visit$\'e$ Montr$\'e$al, la ville la plus internationale du Canada. Ensuite, nous sommes all$\'e$s $\`a$ la ville de Qu$\'e$bec ou nous sommes restes trois jours. C'est aussi une tr$\`e$s jolie ville qui se trouve au bard du fleuve St. Laurent. Les Qu$\'e$becois sont tr$\`e$s sympas! En plus, prot$\'e$ger l'environnement est tr$\`e$s important au Canada ou l'on fait tout pour arr$\^e$ter la pollution. J'adore le Canada !

Elissa pense que$\ldots$
A. la ville de Montr$\'e$al est la capitale du Qu$\'e$bec.
B. prot$\'e$ger l'environnement est important pour les Canadiens.
C. Montr$\'e$al est la plus belle ville du Canada.
D. les Qu$\'e$becois sont g$\'e$n$\'e$reux.

Suppose that n enemy aircraft are shot at simultaneously by m gunners, that each gunner selects an aircraft to shoot at independently of the other gunners, and that each gunner hits the selected aircraft with probability p. Find the expected number of aircraft hit by the gunners.

Ramon plays outfield. In the last game, 15 balls were hit in his direction. He caught 12 of them. What is the experimental probability that he will catch the next ball hit in his direction?

a. What is the number of favorable events?

b. What is the total number of trials?

c. What is the experimental probability that Ramon will catch the next ball hit in his direction?

Let $h(x)=2^x$ and $k(x)=x^2$. Find formulas for h(k(x)) and k(h(x)).

Find which number is greater.

27.18 or 27.174

Simplify each expression. If the expression does not represent a real number, say so.

$$- \sqrt { 0.04 }$$

Let $f(x)=a x^2+b x+c$. Show that

$\int_{m-h}^{m+h} f(x) d x$ and $\frac{h}{3}[f(m-h)+4 f(m)+f(m+h)]$

both have the value $(h / 3)\left[a\left(6 m^2+2 h^2\right)+b(6 m)+6 c\right]$. This establishes the area formula on which the Parabolic Rule is based.

Evaluate the limit (limit as h approaches 0) of [(1+h)^3-1]/h

Mark Texeira hit a baseball with an initial speed of 125 feet per second at an angle of $40^{\circ}$ to the horizontal. The ball was hit at a height of 3 feet off the ground. Find parametric equations that model the position of the ball as a function of time.

The computer game function hit() takes five numbers as input: the x and y coordinates of the center and the radius of a circle C, and the x and y coordinates of a point P. The function should return True if point P is inside or on circle C and False otherwise.

>>> hit(0, 0, 3, 3, 0)
True
>>> hit(0, 0, 3, 4, 0)
False