"agregação" em português significa: (ensino superior ) habilitação à qual podem concorrer doutorados e que é um pré-requisito para a passagem a catedrático.

Dicionário Porto Editora.

Sugiro uma tradução literal mas, sem grande certeza.

As únicas referências que encontro, poderão ser suspeitas na medida em que têm origem portuguesa. Ver, por exemplo:

Faculdade de Ciências Económicas e Empresariais da Universidade ...Associate Professor with Aggregation. Vice-Rector of UCP. PhD in Economics ... Associate Professor with Aggregation. PhD in Business Administration (Ohio ...
www.fcee.lisboa.ucp.pt/custom/template/ fceetplcnsnot.asp?sspageid=79&lang=2&canal=4


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Note added at 2 hrs (2006-02-16 11:26:20 GMT)
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João Freitas´ CV... Aggregation in Civil Engineering, IST-UTL, 1984, awarded a distinction. ... Area of teaching: Structural Analysis, Civil Engineering Degree; ...
www.civil.ist.utl.pt/~freitas/freitas.html

As you correctly say, this person has further 'aggregated' his studies, meaning he's taken further post-graduation studies after completing his PhD. It's not clear from the sentence what those studies are, but I'm sure that Joe Doe wants to show he's continuing to study after getting his PhD.

There is nothing in the USA (or any other En speaking country, as far as I know) even remotely comparable to the French Agrégation, an equivalent of which exists (or at least existed before the recent EU-based reforms) in Pt with the name Agregação. When this is referred to in En, the French term is used.



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Note added at 12 hrs (2006-02-16 21:36:26 GMT)
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Those who need to and care can start an education on this arcane subject by reading a one-page article in the Wikipedia. There is a fair amount of material on the secondary education agrégation on the web, not so much on the higher education one (the relevant one in this case). But there is enough to rule out wrong impressions based on lack of familiarity ... or something worse.


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Note added at 13 hrs (2006-02-16 21:50:09 GMT)
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The diference, actually, the "uniqueness", of the French Agrégation, adopted in a number of other countries, including Pt, can only be understood with a little research, usually after being alerted by someone, like A. Ribeiro or myself, who happen to have SomE idea of what is involved.

As to translation, I repeat: [in my experience of many many years in the USA -- academia, etc.] when the agrégation (=agregação) is referred to in En, it is referred to by the French word.

To Marcelo: I do not know if you want to be considered an intellectual worker (translators should want that); if so, there are various things you have to stop doing. Among them, to stop making a virtue of ignorance. It contributes greatly to unnecessary ignorance. Some people who used to do it here in Proz saw the light and no longer do it. I have a great deal more respect for them now.


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Note added at 13 hrs (2006-02-16 22:32:51 GMT)
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To Marcelo (one last time, I have better things to do). A vulgar way of arguing, debating, etc., may not be so due to the use of 4-letter words, or even veiled offensive language. It is enough that you bring extraneous considerations, introduce ah hominem "arguments" (see dictionary), or generally do anything other than arguing evidence and logical argument on their merits. What Ms Manners might consider "vulgar" may pass muster in a professional forum (we enjoy some privileges, see?) and what Ms Manners thinks is fine and polite-like may be intellectually vulgar. You Do NoT want to be intellectually vulgar, do you? We get that kind of vulgarity quite regularly around here, but we are doing pretty well these days. Do your part, will you?