1. Fluctuations of aggregate economic activity. 2.Cycles Expansion/Boom and Contraction/Recession. Peak and Trough: They are the turning Points of the business cycle. 3. Comovements of many macro variables over the business cycle.
Section 5: Using external media: CDs, DVDs and removable USB storage devices. â¢ dvd-r:until about 2005 the most common and portable format; cannot be erased or reused. â¢ dvd-rw:are-writable version of-rformat, similar to cdrw format CD discs.
If in doubt, consult with the hardware manufacturer. What types of devices read CD-RW discs? Written CD-RW discs have slightly different optical characteristics (lower reflectivity and signal modulation) than prerecorded (pressed) and written CD-R discs and therefore are not as widely compatible.