a improved vs an improved

Some examples from the web:

• Mr President, Commissioner, ladies and gentlemen, following our appeal for a improved distribution of European film, we are now turning to the legal aspects we could employ to promote it.
• A much improved price, choice, you know.
• In my opinion, we need a greatly improved democratic method.
• It is a somewhat improved garrison.
• A forthcoming improved approach to compiling the portfolio investment account, including full quarterly stock data, is described in paragraph 84 above.
• Another aspect of interest is a greatly improved stock situation of North Sea herring.
• The people of Europe deserve a substantially improved outcome.
• Actions specifically targeted at the poverty diseases must be appropriately situated within the larger context of a generally improved delivery of health care and health services.
• The Commission should start to prepare for the next round of negotiations with the objective of ensuring a greatly improved successor agreement.
• As you know, Raiki is a special improved vampire.
• Since Mr Benét's success in removing our weed, we now travel at a much improved five and a half knots.
• Unfortunately, I don't have a much-improved relationship with my son.
• Thanks to their contribution and effective cooperation with the Council, we have arrived at a distinctly improved motion for a resolution.
• This year a slightly improved test was also carried out, and we are all awaiting its results.
• I voted in favour of this document because it is necessary to define a new improved policy framework for tourism in Europe.
• In such a case it is likely that having early access to a substantially improved product outweighs the price increase.
• We are rapidly acquiring a hugely improved picture of the true incidence of BSE in the Community.
• Thus, the amendments that the Commission has accepted will make this a much improved text and take account of the main concerns expressed by Members.
• The outcome was a considerably improved text in which Parliament's key points were adopted.
• My odds just improved a little bit.

Some examples from the web:

• Efficiency, for example with a view to an improved guarantee of supply, should also be on the agenda.
• The prototype is part of a project for an improved production process.
• There are clear signs of an improved situation in this region in terms of nutrition, health and sanitation.
• The present procedures seek to assure an improved follow-up.
• First phase of the reform: an improved system of national contributions
• By the end of this month, I expect to present Commission proposals for an improved European crisis response capability.
• The European Union will shortly have an improved Community civil protection mechanism.
• Better traceability requires an improved labelling system.
• With regard to emissions from land use change an improved methodology is proposed.
• For years the European Parliament has been asking for an improved air traffic management.
• The Agency's expanded mandate is an important component of an improved control system.
• The draft Constitutional Treaty proposed an improved legal basis for enacting Community law.
• New perspectives: towards an improved management and control framework
• The need for an improved implementation of the existing rules justifies the proposal.
• Therefore I would request the Commissioner to take seriously my suggestion for an improved agri-monetary system.
• For instance, an improved road might contribute to the prevention of accidents.
• We wish to see an improved social policy, basic rights and greater transparency.
• At last something has been done about an improved definition of the SME.
• The document before us is an improved version of Regulation No 2560.
• I thoroughly support the suggestions of having web TV and an improved visitors' centre.