?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=National+Trends+on+Agricultural+Crops+Production%3A+Cluster+Analysis&rft.creator=J%C3%84NTSCHI%2C+Dr.+Lorentz&rft.creator=BOLBOACA%2C+Dr.+Sorana+D.&rft.creator=STOENOIU%2C+Carmen+E%2C&rft.subject=Theoretical+Biology&rft.description=Staring+from+descriptive+data+on+crop+production+and+cultivated+area+at+national+level+during+on+fifteen+years%2C+the+aim+of+this+study+is+to+reveal+the+trends+on+crops+cultivation.+The+cluster+analysis+reveals+linkages+between+crops+classes+as+well+as+between+different+crops%2C+which+can+be+partly+assigned+to+crops+rotation.+Time+series+analysis+reveals+dramatically+reducing+of+production+of+some+crops%2C+such+as+flax%2C+hemp%2C+and+sugar+beet%2C+and+increasing+of+production%2C+such+at+sunflower%2C+and+increasing+of+productivity%2C+such+at+potatoes+and+field+vegetables.&rft.publisher=AcademicPres&rft.contributor=MARGHITAS%2C+Prof.+Dr.+Liviu+Al.&rft.contributor=PAMFIL%2C+Prof.+Dr.+Doru+C.&rft.contributor=SESTRAS%2C+Prof.+Dr.+Radu+E.&rft.date=2007-10-01&rft.type=Journal+(Paginated)&rft.type=PeerReviewed&rft.format=application%2Fpdf&rft.identifier=http%3A%2F%2Fcogprints.org%2F5743%2F1%2Fwork_list.pdf&rft.identifier=++J%C3%84NTSCHI%2C+Dr.+Lorentz+and+BOLBOACA%2C+Dr.+Sorana+D.+and+STOENOIU%2C+Carmen+E%2C++(2007)+National+Trends+on+Agricultural+Crops+Production%3A+Cluster+Analysis.++%5BJournal+(Paginated)%5D+++++&rft.relation=http%3A%2F%2Fcogprints.org%2F5743%2F