And accordingly they stand beyond the range of this dissertation.

dissertation 1611, from L. dissertationem (nom. dissertatio) "discourse," from dissertare "debate, argue," frequentative of disserere "discuss, examine," from dis- "apart" + serere "to arrange words" (see series). Sense of "formal, written treatise" is 1651.

There's a dissertation topic lurking in this question for some aspiring economist.

Great Britain--Biography
Reel, Jerome V. INDEX TO BIOGRAPHIES OF ENGLISHMEN, 1000-1485, FOUND IN DISSERTATIONS AND THESES. Westport, CT: Greenwood Press, 1975. 689 pp.
(Ref /CT/774/R43)

It is the aim of the present dissertation to accomplish this.

I think my dissertation and Sears's book have two different definitions of attachment.

In each case the object of the writing was to communicate to yourself, your supervisors, or to others, something about your work. In writing your dissertation you will draw on some of this earlier writing to produce a longer and more comprehensive account.

[I wrote this in 1993 as a letter to a student concerning a draft of his dissertation. in 2003 I edited it to remove some specific references to the student and present it as a small increment to the information available to my grad students. --spaf] Once you have a statement of thesis, you can begin to develop the dissertation. The abstract, for instance, should be a one-page description of your thesis and how you present the proof of it. The abstract should summarize the results of the thesis and should stress the contributions to science made thereby. Let's revisit the idea of the thesis itself. It is a hypothesis, a conjecture, a theorem. The dissertation is a formal, stylized document used to argue your thesis. The thesis must be significant, original (no one has yet demonstrated it to be true), and it must extend the state of scientific knowledge. Chapter II. Abstract Model. Your results are to be of lasting value. Thus, the model you develop and write about (and indeed, that you defend) should be one that has lasting value. Thus, you should discuss a model that is not based on Windows, Linux, Ethernet, PCMIA, or any other specific technology. It should be generic in nature, and should capture all the details necessary to overlay the model on likely environments. You should discuss the problems, parameters, requirements, necessary and sufficient conditions, and other factors here. Consider that 20 years ago (ca 1980) the common platform was a Vax computer running VMS or a PDP-11 running Unix version 6, yet well-crafted theses of the time are still valuable today. Will your dissertation be valuable 20 years from now (ca 2020), or have you referred to technologies that will be of only historical interest?