Phd thesis or dissertation
Some tips on how to write the best thesis or you are beginning your graduate program, reading over all the material and trying to prepare yourself as best as possible for the next two to three years. What you've probably discovered is that whether you are pursuing a masters degree or a doctoral degree, the main goal in graduate school is to complete original research or projects, depending on your degree words “thesis” and “dissertation” are often used interchangeably, leading to some confusion in academia about what each individual word actually means. But that is the extent in which they are ences between a masters thesis and doctoral lly in the us, a thesis is the final project for the masters degree and a dissertation leads to a doctoral degree. Seeking a phd is different in that your dissertation must contribute something completely new and undiscovered to your field. So the main difference between a thesis and a dissertation is the depth of knowledge you must attain in order to write the paper. Masters degree thesis is more closely related to a research paper that you would have completed during college. With a dissertation, you are expected to use the research of others only to guide you in your own research to come up with a completely new r way in which the thesis and dissertation differ are in length. However, the dissertation is usually at least double and sometimes triple the length of a thesis. To determine the length of your thesis or dissertation, remember you should always first consult your grad for writing a thesis or first step in writing your thesis or dissertation (or any other academic paper) is setting a deadline. The next step is to create a detailed outline of your beginning to write your thesis or dissertation, keep in mind that you are writing an academic paper. Not many people besides your professors and academic advisors will read your thesis, so make sure to keep your writing style t a scholarly text to see how your thesis or dissertation should be you have written and edited your thesis or dissertation, you should find an editor. Thesis or dissertation[1] is a document submitted in support of candidature for an academic degree or professional qualification presenting the author's research and findings. 2] in some contexts, the word "thesis" or a cognate is used for part of a bachelor's or master's course, while "dissertation" is normally applied to a doctorate, while in other contexts, the reverse is true. 3] the term graduate thesis is sometimes used to refer to both master's theses and doctoral dissertations. Required complexity or quality of research of a thesis or dissertation can vary by country, university, or program, and the required minimum study period may thus vary significantly in word "dissertation" can at times be used to describe a treatise without relation to obtaining an academic degree. The term "thesis" is also used to refer to the general claim of an essay or similar work. 10 united kingdom, ireland and hong term "thesis" comes from the greek θέσις, meaning "something put forth", and refers to an intellectual proposition.
Doctoral thesis or dissertation
Thesis (or dissertation) may be arranged as a thesis by publication or a monograph, with or without appended papers, respectively, though many graduate programs allow candidates to submit a curated collection of published papers. In a thesis by publication, the chapters constitute an introductory and comprehensive review of the appended published and unpublished article documents. 5] dissertations normally report on a research project or study, or an extended analysis of a topic. The structure of a thesis or dissertation explains the purpose, the previous research literature which impinges on the topic of the study, the methods used and the findings of the project. Awarding institutions often define their own house style that candidates have to follow when preparing a thesis document. Requirements, including pagination, layout, type and color of paper, use of acid-free paper (where a copy of the dissertation will become a permanent part of the library collection), paper size, order of components, and citation style, will be checked page by page by the accepting officer before the thesis is accepted and a receipt is r, strict standards are not always required. These committees, at least in the us model, usually consist of a primary supervisor or advisor and two or more committee members, who supervise the progress of the dissertation and may also act as the examining committee, or jury, at the oral examination of the thesis (see below). The committee members are doctors in their field (whether a phd or other designation) and have the task of reading the dissertation, making suggestions for changes and improvements, and sitting in on the defense. The latin american docta, the academic dissertation can be referred to as different stages inside the academic program that the student is seeking to achieve into a recognized argentine university, in all the cases the students must develop original contribution in the chosen fields by means of several paper work and essays that comprehend the body of the thesis. 10] correspondingly to the academic degree, the last phase of an academic thesis is called in spanish a defensa de grado, defensa magistral or defensa doctoral in cases in which the university candidate is finalizing his or her licentiate, master's, or phd program. According to a committee resolution, the dissertation can be approved or rejected by an academic committee consisting of the thesis director, the thesis coordinator, and at least one evaluator from another recognized university in which the student is pursuing his or her academic program. All the dissertation referees must already have achieved at least the academic degree that the candidate is trying to reach. High-quality research papers presented as the empirical study of a "postgraduate" consecutive bachelor with honours or baccalaureatus cum honore degree are called thesis (honours seminar thesis). Major papers presented as the final project for a master's degree are normally called thesis; and major papers presenting the student's research towards a doctoral degree are called theses or section's factual accuracy is disputed. Most university faculties in croatia, a degree is obtained by defending a thesis after having passed all the classes specified in the degree programme. In the bologna system, the bachelor's thesis, called završni rad (literally "final work" or "concluding work") is defended after 3 years of study and is about 30 pages long. Most students with bachelor's degrees continue onto master's programmes which end with a thesis called diplomski rad.
The czech republic, higher education is completed by passing all classes remaining to the educational compendium for given degree and defending a thesis. For bachelors programme the thesis is called bakalářská práce (bachelors thesis), for master's degrees and also doctor of medicine or dentistry degrees it is the diplomová práce (master's thesis), and for philosophiae doctor (phd. Thesis for so called higher-professional school (vyšší odborná škola, voš) is called absolventská prá following types of thesis are used in finland (names in finnish/swedish):Kandidaatintutkielma/kandidatavhandling is the dissertation associated with lower-level academic degrees (bachelor's degree), and at universities of applied gradu(-tutkielma)/(avhandling )pro gradu, colloquially referred to simply as 'gradu', is the dissertation for master's degrees, which make up the majority of degrees conferred in finland, and this is therefore the most common type of thesis submitted in the country. The equivalent for engineering and architecture students is diplomityö/ highest-level theses are called lisensiaatintutkielma/licentiatavhandling and (tohtorin)väitöskirja/doktorsavhandling, for licentiate and doctoral degrees, cover of the thesis presented by claude bernard to obtain his doctorate of medicine (1843). France, the academic dissertation or thesis is called a thèse and it is reserved for the final work of doctoral candidates. Complete a master's degree in research, a student is required to write a mémoire, the french equivalent of a master's thesis in other higher education word dissertation in french is reserved for shorter (1,000–2,000 words), more generic academic defense is called a germany, an academic thesis is called abschlussarbeit or, more specifically, the basic name of the degree complemented by -arbeit (e. For bachelor's and master's degrees, the name can alternatively be complemented by -thesis instead (e. A bachelor's thesis is often 40–60 pages long, a diploma thesis and a master's thesis usually 60–100. Doctoral degree is often earned with multiple levels of a latin honors remark for the thesis ranging from summa cum laude (best) to rite (duly). A thesis can also be rejected with a latin remark (non-rite, non-sufficit or worst as sub omni canone). India the thesis defense is called a viva voce (latin for "by live voice") examination (viva in short). India, pg qualifications such as msc physics accompanies submission of dissertation in part i and submission of a project (a working model of an innovation) in part ii. In all the cases, the dissertation can be extended for summer internship at certain research and development organizations or also as phd indonesia, the term thesis is used specifically to refer to master's theses. In some universities, students are required to write a proposal skripsi, proposal thesis or thesis proposal before they could write their final assignment. If the thesis proposal is considered to fulfill the qualification by the academic examiners, students then may proceed to write their final italy there are normally three types of thesis. In order of complexity: one for the laurea (equivalent to the uk bachelor's degree), another one for the laurea magistrale (equivalent to the uk master's degree) and then a thesis to complete the dottorato di ricerca (phd). Thesis requirements vary greatly between degrees and disciplines, ranging from as low as 3–4 ects credits to more than 30.
Thesis work is mandatory for the completion of a ian universities often follow the british model for dissertations and degrees. Branch campuses of british, australian and middle east universities in malaysia use the respective models of the home pakistan, at undergraduate level the thesis is usually called final year project, as it is completed in the senior year of the degree, the name project usually implies that the work carried out is less extensive than a thesis and bears lesser credit hours too. In ms, some universities allow students to accomplish a project of 6 credits or a thesis of 9 credits, at least one publication [citation needed] is normally considered enough for the awarding of the degree with project and is considered mandatory for the awarding of a degree with thesis. A written report and a public thesis defense is mandatory, in the presence of a board of senior researchers, consisting of members from an outside organization or a university. A phd candidate is supposed to accomplish extensive research work to fulfill the dissertation requirements with international publications being a mandatory requirement. The defense of the research work is done the philippines, an academic thesis is named by the degree, such as bachelor/undergraduate thesis or masteral thesis. However, in philippine english, the term doctorate is typically replaced with doctoral (as in the case of "doctoral dissertation"), though in official documentation the former is still used. The terms thesis and dissertation are commonly used interchangeably in everyday language yet it generally understood that a thesis refers to bachelor/undergraduate and master academic work while a dissertation is named for doctorate philippine system is influenced by american collegiate system, in that it requires a research project to be submitted before being allowed to write a thesis. This is mostly given as a prerequisite writing course to the actual thesis and is accomplished in the term period before; supervision is provided by one professor assigned to a class. In addition, the presentation of the research project will help the candidate choose their primary thesis undergraduate thesis is completed in the final year of the degree alongside existing seminar (lecture) or laboratory courses, and is often divided into two presentations: proposal and thesis presentations (though this varies across universities), whereas a master thesis or doctorate dissertation is accomplished in the last term alone and is defended once. In most universities, a thesis is required for the bestowment of a degree to a candidate alongside a number of units earned throughout their academic period of stay, though for practice and skills-based degrees a practicum and a written report can be achieved instead. Required word length, complexity, and contribution to scholarship varies widely across universities in the poland, a bachelor's degree usually requires a praca licencjacka (bachelor's thesis) or the similar level degree in engineering requires a praca inżynierska (engineer's thesis/bachelor's thesis), the master's degree requires a praca magisterska (master's thesis). Portugal and brazil, a dissertation (dissertação) is required for completion of a master or phd degree. The examination board typically involves 5 to 6 scholars (including the advisor) or other experts with a phd degree (generally at least half of them must be external to the university where the candidate defends the thesis, but may depend on the university). Russia, kazakhstan, belarus, and ukraine an academic dissertation or thesis is called what can be literally translated as a "master's degree work" (thesis), whereas the word dissertation is reserved for doctoral theses (candidate of sciences). To complete a master's degree, a student is required to write a thesis and to then defend the work publicly. Universities in slovenia, an academic thesis called diploma thesis is a prerequisite for completing undergraduate studies.
The thesis used to be 40–60 pages long, but has been reduced to 20–30 pages in new bologna process programmes. To complete master's studies, a candidate must write magistrsko delo (master's thesis) that is longer and more detailed than the undergraduate thesis. In pre bologna programmes students were able to skip the preparation and presentation of a master's thesis and continue straightforward towards slovakia, higher education is completed by defending a thesis, which is called bachelors thesis "bakalárska práca" for bachelors programme, master's thesis or "diplomová práca" for master's degrees and also doctor of medicine or dentistry degrees and dissertation "dizertačná práca" for philosophiae doctor (phd. Practices and definitions vary between fields but commonly include the c thesis/bachelor thesis, which corresponds to 15 hp or 10 weeks of independent studies, d thesis/'/magister/one year master's thesis, which corresponds to 15 hp or 10 weeks of independent studies and e thesis/two-year master's thesis, which corresponds to 30 hp or 20 weeks of independent studies. After that there are two types of post graduate degrees, licentiate dissertation and phd dissertation. A licentiate degree is approximately "half a phd" in terms of size and scope of the thesis. Swedish phd studies should in theory last for four years, including course work and thesis work, but as many phd students also teach, the phd often takes longer to e the academic community, the terms thesis and dissertation are interchangeable. At universities in the united kingdom, the term thesis is usually associated with phd/engd (doctoral) and research master's degrees, while dissertation is the more common term for a substantial project submitted as part of a taught master's degree or an undergraduate degree (e. Doctoral programs, the "dissertation" can take up the major part of the student's total time spent (along with two or three years of classes), and may take years of full-time work to complete. At most universities, dissertation is the term for the required submission for the doctorate, and thesis refers only to the master's degree is also used to describe a cumulative project for a bachelor's degree, and is more common at selective colleges and universities, or for those seeking admittance to graduate school or to obtain an honors academic designation. Unlike a dissertation or master's thesis, they are not as long, they do not require a novel contribution to knowledge, or even a very narrow focus on a set subtopic. Because of the nature of the graduate thesis or dissertation having to be more narrow and more novel, the result of original research, these usually have a smaller proportion of the work that is cited from other sources, though the fact that they are lengthier may mean they still have total ic undergraduate courses, especially writing-intensive courses or courses taken by upperclassmen, may also require one or more extensive written assignments referred to variously as theses, essays, or papers. Increasingly, high schools are requiring students to complete a senior project or senior thesis on a chosen topic during the final year as a prerequisite for graduation. 15] the extended essay component of the international baccalaureate diploma programme, offered in a growing number of american high schools, is another example of this lly speaking, a dissertation is judged as to whether or not it makes an original and unique contribution to scholarship. Lesser projects (a master's thesis, for example) are judged by whether or not they demonstrate mastery of available scholarship in the presentation of an idea. Required complexity or quality of research of a thesis may vary significantly among universities or examinations[edit]. This examination normally occurs after the dissertation is finished but before it is submitted to the university, and may comprise a presentation (often public) by the student and questions posed by an examining committee or jury.
In north america, an initial oral examination in the field of specialization may take place just before the student settles down to work on the dissertation. An additional oral exam may take place after the dissertation is completed and is known as a thesis or dissertation "defense," which at some universities may be a mere formality and at others may result in the student being required to make significant revisions. Result of the examination may be given immediately following deliberation by the examiners (in which case the candidate may immediately be considered to have received his or her degree), or at a later date, in which case the examiners may prepare a defense report that is forwarded to a board or committee of postgraduate studies, which then officially recommends the candidate for the ial decisions (or "verdicts") include:Accepted/pass with no thesis is accepted as presented. Thesis must be ons (for example, correction of numerous grammatical or spelling errors; clarification of concepts or methodology; an addition of sections) are required. One or more members of the jury or the thesis supervisor will make the decision on the acceptability of revisions and provide written confirmation that they have been satisfactorily completed. If, as is often the case, the needed revisions are relatively modest, the examiners may all sign the thesis with the verbal understanding that the candidate will review the revised thesis with his or her supervisor before submitting the completed ive revision thesis must be revised extensively and undergo the evaluation and defense process again from the beginning with the same examiners. A candidate who is not recommended for the degree after the second defense must normally withdraw from the thesis is unacceptable and the candidate must withdraw from the program. This verdict is given only when the thesis requires major revisions and when the examination makes it clear that the candidate is incapable of making such most north american institutions the latter two verdicts are extremely rare, for two reasons. Students who pass the qualifying examination are deemed capable of completing scholarly work independently and are allowed to proceed with working on a dissertation. Second, since the thesis supervisor (and the other members of the advisory committee) will normally have reviewed the thesis extensively before recommending the student proceed to the defense, such an outcome would be regarded as a major failure not only on the part of the candidate but also by the candidate's supervisor (who should have recognized the substandard quality of the dissertation long before the defense was allowed to take place). It is also fairly rare for a thesis to be accepted without any revisions; the most common outcome of a defense is for the examiners to specify minor revisions (which the candidate typically completes in a few days or weeks). The other hand, at universities on the british pattern it is not uncommon for theses to be failed at the viva stage,[citation needed] in which case either a major rewrite is required, followed by a new viva, or the thesis may be awarded the lesser degree of (master of philosophy) instead, preventing the candidate from resubmitting the australia, doctoral theses are usually examined by three examiners although some, like the australian catholic university and the university of new south wales, have shifted to using only two examiners; without a live defense except in extremely rare exceptions. In the case of a master's degree by research the thesis is usually examined by only two examiners. Following submission of the thesis, copies are sent by mail to examiners and then reports sent back to the r to a master's degree by research thesis, a thesis for the research component of a master's degree by coursework is also usually examined by two examiners, one from the candidate's department and one from another university. For an honours year, which is a fourth year in addition to the usual three-year bachelor's degree, the thesis is also examined by two examiners, though both are usually from the candidate's own department. Honours and master's theses sometimes require an oral defense before they are germany, a thesis is usually examined with an oral examination. However, a process that allows for revisions of the thesis is usually only implemented for doctoral are several different kinds of oral examinations used in practice.
The disputation, also called verteidigung ("defense"), is usually public (at least to members of the university) and is focused on the topic of the thesis. In contrast, the rigorosum is not held in public and also encompasses fields in addition to the topic of the thesis. Some universities also demand a combination of several of these the british model, the phd or mphil student is required to submit their theses or dissertation for examination by two or three examiners. The oral viva session is attended by the oral viva chairman, a rapporteur with a phd qualification, the first examiner, the second examiner and sometimes the third campuses of british, australian and middle east universities in malaysia use the respective models of the home campuses to examine their phd or mphil the philippines, a thesis is followed by an oral defense. The oral defense is typically not held in public for bachelor and master oral defenses, however a colloquium is held for doctorate portugal, a thesis is examined with an oral defense, which includes an initial presentation by the candidate followed by an extensive questioning/answering period. Typical duration for the total exam is 1 hour 30 minutes for the msc and 3 hours for the north america, the thesis defense or oral defense is the final examination for doctoral candidates, and sometimes for master's examining committee normally consists of the thesis committee, usually a given number of professors mainly from the student's university plus his or her primary supervisor, an external examiner (someone not otherwise connected to the university), and a chair person. Each committee member will have been given a completed copy of the dissertation prior to the defense, and will come prepared to ask questions about the thesis itself and the subject matter. In many schools, master's thesis defenses are restricted to the examinee and the examiners, but doctoral defenses are open to the typical format will see the candidate giving a short (20–40-minute) presentation of his or her research, followed by one to two hours of some u. Institutions, a longer public lecture (known as a "thesis talk" or "thesis seminar") by the candidate will accompany the defense itself, in which case only the candidate, the examiners, and other members of the faculty may attend the actual and ukraine[edit]. Student in ukraine or russia has to complete a thesis and then defend it in front of their department. After the presentation and defense of the thesis, the final conclusion of the department should be that none of them have reservations on the content and quality of the thesis. Conclusion on the thesis has to be approved by the rector of the educational institute. This conclusion (final grade so to speak) of the thesis can be defended/argued not only in the thesis council at, but also in any other thesis council of russia or diploma de estudios avanzados (dea) can last two years and candidates must complete coursework and demonstrate their ability to research the specific topics they have studied. After completing this part of the phd, students begin a dissertation on a set topic. The dissertation must reach a minimum length depending on the subject and it is valued more highly if it contains field research. Hong kong, ireland and the united kingdom, the thesis defense is called a viva voce (latin for "by live voice") examination (viva for short). Submission of the thesis is the last formal requirement for most students after the defense.
By the final deadline, the student must submit a complete copy of the thesis to the appropriate body within the accepting institution, along with the appropriate forms, bearing the signatures of the primary supervisor, the examiners, and, in some cases, the head of the student's department. Other required forms may include library authorizations (giving the university library permission to make the thesis available as part of its collection) and copyright permissions (in the event that the student has incorporated copyrighted materials in the thesis). Taylor & francis, elsevier) use copyright agreements that allow the authors to incorporate their published articles into dissertations without separate e to submit the thesis by the deadline may result in graduation (and granting of the degree) being delayed. Institutions, there will also be various fees (for binding, microfilming, copyright registration, and the like), which must be paid before the degree will be all the paperwork is in order, copies of the thesis may be made available in one or more university libraries. The position that one took during a disputation was the thesis, while the dissertation was the line of reasoning with which one buttressed it. Retrieved 24 november up thesis in wiktionary, the free tation article at liswiki, a library science ked digital library of theses and dissertations (ndltd). And brawn: smartest players in the nflwork hacks: 10 tips for reducing job stress and increasing productivitydrunken geniuses: sharp as a tack, drunk as a skunksocial business power is the difference between a thesis and a dissertation? You’re contemplating graduate school, you may have heard that a comprehensive paper is required to graduate, and you likely wonder what exactly is the difference between a thesis and a dissertation. Let’s delve further into the definition of each and the differences between thesis and dissertation main difference between a thesis and a dissertation is when they are completed. The thesis is a project that marks the end of a master’s program, while the dissertation occurs during doctoral study. A thesis is a compilation of research that proves you are knowledgeable about the information learn throughout your graduate program. A dissertation is your opportunity during a doctorate program to contribute new knowledge, theories or practices to your field. The point is to come up with an entirely new concept, develop it and defend its ural differences between a thesis and a dissertation. Master’s thesis is kind of like the sorts of research papers you are familiar with from undergrad. The point of the thesis is to show your ability to think critically about a topic and to knowledgeably discuss the information in-depth. Also, with a thesis, you usually take this opportunity to expand upon a subject that is most relevant to a specialty area you wish to pursue professionally. In a dissertation, you utilize others’ research merely as guidance in coming up with and proving your own unique hypothesis, theory or concept.
The bulk of the information in a dissertation is attributed to y, there is a difference in length between these two major works. A master’s thesis should be at least 100 pages in length, likely a bit beyond that. However, a doctoral dissertation should be much longer, because they involve a great deal of background and research information, along with every detail of your proposal and how you arrived at the information, according to purdue university. You will receive guidance from a faculty member who will serve as your dissertation adviser. This adviser will be there to point you in the right direction if you are stuck, can assist in locating resources and ensure that your proposal is on the right d resource: capstone school and program has its own guidelines for what a thesis and dissertation should contain, as well as its structure. However, you now have an overview of the difference between a thesis and a / beyond publishing / thesis vs. Graduate degree generally requires completing either a thesis or a dissertation, and there is a difference between thesis and dissertation. In shakespeare’s day, a candidate for a master’s degree would write a thesis, an original paper in which he maintained a certain proposition. He would read his thesis to his committee, after which he sat in silence while two faculty members gave point by point refutations of everything he said. Dissertation: europe the original distinction between a thesis and a dissertation has been largely retained. A doctoral thesis is a focused piece of original research which is performed in order to obtain a phd. So, a thesis will contain extensive citations and references to earlier work, although the focus remains on the original work that comes out of vs. Dissertation: the united states, the definition of a thesis is almost the opposite of that in europe. Because a thesis is shorter than a dissertation it gradually came to mean a preliminary degree on the way to a doctorate. Almost everyone i know who received a master’s degree in chemistry got one because they dropped out of graduate school and wrote their truncated research as a master’s they have in a thesis and a dissertation require a lot of work and should be treated seriously. I wrote this in 1993 as a letter to a student concerning a draft of his dissertation. One does not attempt to capture everything in one's dissertation is a technical work used to document and set forth proof of one's thesis.
As a general rule, every statement in your dissertation must be common knowledge, supported by citation to technical literature, or else original results proved by the candidate (you). Each of those statements must directly relate to the proof of the thesis or else they are not dissertation is not the thesis. The dissertation describes, in detail, how one proves the hypothesis (or, rarely, disproves the claim and shows other important results). The thesis must be significant, original (no one has yet demonstrated it to be true), and it must extend the state first thing you need to do is to come up with no more than three sentences that express your thesis. You too must be happy with the statement -- it should be what you will tell anyone if they ask you what your thesis is (few people will want to hear an hour presentation as a response). 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 s the best way to understand how an abstract should look would be to examine the abstracts of several dozen dissertations that have already been accepted. This is a good approach to see how an entire dissertation is structured and presented. Mit press has published the acm doctoral dissertation award series for over a decade, so you may find some of those to be good examples to read -- they should be in any large technical dissertation itself should be structured into 4 to 6 chapters. The presentation would include analysis to show support for the underlying some work there may be secondary confirmation studies, or it might be the case that additional important results are collected along the way to the proof of the central thesis. Will your dissertation be valuable 20 years from now (ca 2020), or have you referred to technologies that will be of only historical interest? There are basically three proof techniques that i have seen used in a computing dissertation, depending on the thesis topic. A second proof method is stochastic, using some form of statistical methods and measurements to show that something is true in the anticipated the third method, you need to show that your thesis is true by building something according to your model and showing that it behaves as you claim it will. This may be folded into chapter iii in some theses, or it may be multiple chapters in a thesis with many parts (as in a theory-based thesis). This is also a place where you may wish to point out significant results that you obtained while seeking to prove your central thesis, but which are not themselves supportive of the thesis. This is where you discuss what you found from your work, incidental ideas and results that were not central to your thesis but of value nonetheless, (if you did not have them in chapter v) and other results. This chapter should summarize all the important results of the dissertation --- note that this is the only chapter many people will ever read, so it should convey all the important is also where you should outline some possible future work that can be done in the area.
Appendices usually are present to hold mundane details that are not published elsewhere, but which are critical to the development of your dissertation. Sure that something you claim as a proof would be recognized as such by any scientist or and your dissertation are supposed to be the ultimate (current) authority on the topic you are covering. A protocol is not the same as the realization of it, a reference model is not the same as a working example, and so a rule of thumb, a cs dissertation should probably be longer than 100 pages, but less than 160. Your dissertation is supposed to explain your findings and, along with the defense, demonstrate your mastery of the area in which you are now the leading expert. That does not mean writing everything you know -- it means writing enough about the most important points that others can agree with your of all, don't fall into the trap that ties up many a candidate, and causes some of them to flame out before completion: your thesis does not need to be revolutionary. Instead, it is publications and products of the author that may change the your dissertation is like most, it will only be read by your committee and some other ph. And at that you will find that many well-known scientists in cs have made their careers in areas different from their dissertation topic. The dissertation is proof that you can find and present original results; your career and life after graduation will demonstrate the other concerns you might have about making an impact.