-
發表於:2018-04-20
Therearethreemaintypesofdescriptivemethods:observationalmethods,case-studymethodsandsurveymethods.Anumberofentirelynewexperimentalandobservationalmethodshavegrowntomaturi...
-
發表於:2018-03-28
Riessaid."Thisisanobservationalstudyusingdatafromalargedatabase.ProspectiveobservationalstudyontheeffectsofcaesareansectiononbreastfeedingButtheauthorsacknowledgedthatth...
-
發表於:2016-12-12
Alotofobservationaldataontheatmosphericboundarylayerovertheplateauwereobtained.Janeherselfhadpredictedthisfinding,fromobservationaldata,twodecadesearlier.Methodsforestima...
-
發表於:2018-08-04
Forsomeofthesequestions,observationalstudiesarethebestwearegoingtoget.Buttheseweremostlybasedonobservationalstudies,whichcanbemisleading.Wehavemorethan10yearsofexperience...
-
發表於:2017-05-25
intercalibration(ofobservationalinstrumentation)Theobservationaldatawereirrefutable.Coulddataminingsoonreplaceserendipitousobservationaldiscovery?EffectofXuezhikangon80CH...
-
發表於:2018-05-23
Hepointstopreviousobservationalresearchsuggestingthatpeoplewhoskipbreakfastinfavorofmassivemealsintheeveninghourstendtobeoverweight.Therecentsignificantprogressonboththet...