WSN nodes resource constrained. In order to keep the size and the cost of the nodes down, the nodes have limited processing power, memory and radio range. However, the resource constraint which has the most significant impact on many WSNs is the constraint on energy. WSN nodes are battery operated. Many wireless sensor networks are deployed in locations where battery replacement is not feasible. A node has to be discarded when the battery depletes. Energy scavenging may alleviate this problem in some sensor networks. Most WSN protocols are very conscious of the limited supply of energy, and try to conserve energy.
The second way one uses the word "thesis" is in reference to a major paper that one writes as a capstone for his or her bachelor's or master's degree. Whereas term papers are projects that last one term, theses are projects that last several terms. Theses are usually much, much longer than term papers, often stretching past two hundred pages. Perhaps counterintuitively, however, theses often cover much more specialized topics than term papers. For example, one may write a term paper on Herman Melville for a literature survey course, but one would be much more likely to write a thesis on homosexual symbolism in Herman Melville's Moby Dick or on some other extremely specific aspect of one of Melville's novels. In fact, one could write an entire thesis on a single paragraph of Moby Dick . The goal of a thesis is to expound fully one's opinion on a given subject and to confront and exhaust all the opposition to that opinion. Therefore, one usually specializes his or her thesis topic almost to the point of absurdity.