If the domain and the range of the real-valued function \[ f(x)=\frac{1}{\sqrt{|x|-[x]}} \] are \(A\) and \(B\), respectively, then \[ A\cap B = \ ? \] (Here, \(R^{+}\) denotes the set of positive real numbers and \(Z^{+}\) denotes the set of positive integers.)
\[ \lim_{x \rightarrow \frac{2}{3}} \frac{\sin\left(\pi \cos^2(3x-2)\right)} {9x^2-12x+4} = \ ? \]