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8
INTRODUCTION
AnnaImiołek,JanuszGołaszewski,DariuszZałuskiandZbigniew
Nasalskidiscusspracticalstatisticalandeconomicaspectsofusingsurvey
studiesforidentificationofthekeyplantcultivationtechnologyfactors.They
considersurveystudycarriedoutin2008inordertodeterminethekeyelements
inaplantproductiontechnologyandtocalculateunitproductioncostsof
growingwinterrye(SecalecerealeL.)forgrain.Thesurveyscoveredryegrain
producersinnortheasternPoland,whogrowryeonanacreageofover1ha.The
economicanalysiswasperformedbasedondirectoutlaysonproduction;unit
costsanddirectmarginwerecalculatedandthestructureofcostsaswellas
profitabilityofwinterryeproductionweredetermined.
ArkadiuszKozłowskistudiesusefulnessofpastdatainsamplingdesign
forexitpollsurveys.Themainstressisputontheuseofwidelyavailable
databasescontainingdetailsofpastelectionsresults.Bymeansofsimulation
experimentstheeffectivenessoftechniqueofconnectingtheselectionofnew
samplewithpastresults(tiedsampleprocedure)isevaluatedandoptimal
parametersforthistechniqueareindicated.Amodificationoftheprocedureis
alsoproposed.Thebestresultsareobtainedforstratifiedsamplingwiththeuse
ofelementsoftiedsampleprocedure.Thepossibilitiesofcostreductionof
surveyswithoutprejudicetotheeffectivenessbymeansoftherightselectionof
solelylargeprecinctsarealsoindicated.
JanKubackiandAlinaJędrzejczakcompareGeneralizedVariance
FunctionwithothermethodsofprecisionestimationforPolishHousehold
BudgetSurvey.AstartingpointwastheestimationofBalancedRepeated
ReplicationvariancesorbootstrapvariancesinthesituationwhereusingBRR
wasnotapplicable.ToevaluatetheGVFmodelthehyperbolicfunctionwas
used.ThecomputationwasdoneusingWesVARandSPSSsoftwareandsome
specialprocedurespreparedforR-projectenvironment.Theassessmentof
estimatesconsistencyforcountieswasalsoconductedbymeansofsmallarea
models.
DorotaRaczkiewiczpresentssomeaspectsofpostenumerationsurveysin
populationcensusesinPolandandGermany.TheAuthorbeginswith
comparisonofpopulationcensusesinPolandandGermany.Nextattentionis
paidtodataqualityandpotentialerrorsinpopulationcensuses.Comparisonis
madeofprinciplesofpost-enumerationsurveysincensusesinPolandand
Germany.Whatismore,internationalrecommendationonqualityassessmentof
populationcensusesaccordingtotheUNandEUROSTATispresented.
OndřejVilikusdicussedoptimizationofsamplesizeandnumberoftasks
perrespondentinconjointstudiesusingsimulateddatasets.TheAuthorpresents
anapproachbasedonanalyzingbatchesofsimulateddatasetswithgiven
characteristics.Thearticleincludesoverviewoftheresultsforchoice-based
conjointstudieswithusuallevelofcomplexity.Searchforanoptimalcombination