Dhansak ("Dhan" is Persian/Urdu for "seed"- referring to grains or legumes; "Sak" (derived from Gujarati "shaak" meaning vegetable greens or cooked vegetables). The Gujarati element of the recipe is the liberal use of a variety of Indian spices and condiments, in contrast to the more mellow Iranian recipes. In Parsi homes, dhansak is traditionally made on Sundays owing to the long preparation time required to cook the lentils and vegetables into a mush (in the days before pressure cooking was employed). Dhansak is also always had on the fourth day after the death of a near one. There is no meat
Pulse-position modulation is encoded in the time of arrival (either differentially, or relative to a common clock), the presence of one or more echoes can make it extremely difficult, if not impossible, to accurately determine the correct pulse position corresponding to the transmitted pulse. Multipath in Pulse Position Modulation systems can be easily mitigated by using the same techniques that are used in Radar systems that rely totally on synchronization and time of arrival of the received pulse to obtain their range position in the presence of echoes. One of the principal advantages of PPM is that it is an "M"-ary modulation