Social context and loneliness in an epidemiological youth sample using the Experience Sampling Method Background:Previous research has shown the relationship between loneliness and affect, as well as the relationship between trait loneliness and state lonel... CY Tang,SM Wong,TY Wong,... - 《Journ...
In order to effectively enhance classified performance of the minority kind in the imbalanced data set, we proposed one kind minority kind of sample sampling method based on the K-means cluster and the genetic algorithm in view of this question. We used K-means algorithm to cluster and group ...
Samplesizeand samplingmethods KetkesonePhrasisombath MD,MPH,PhD(candidate) FacultyofPostgraduateStudiesandResearch UniversityofHealthSciences GFMER-WHO-UNFPA-LAOPDR TrainingCourseinReproductiveHealthResearch Vientiane,22September2009 1.Introduction 2.Samplingmethods a.Probabilitysampling b.Nonprobabilitysampling 3...
In: Hudson I, MR K (eds) Phenological research: methods for environmental and climate change analysis. NE, DordrechtMorellato LPC Camargo MGG D' Eca Neves FF . The Influence of sampling method,sample size,and frequency of observations on plant phenologcial patterns and interpretation in tropical...
Almost all research is a compromise between the ideal and the possible. Ideally, you would study the whole population; in practice, you don’t have time or capacity. But care in your sample selection, both size and method, will ensure that your research does not fall into the traps of ei...
Coal sampling W. Membrey, in The Coal Handbook: Towards Cleaner Production: Coal Production, 2013 5.6.1 Sample preparation in the laboratory Laboratory sample preparation lends itself to mechanisation and automation. Systems have been available for some time that can take much of the manual handling...
We evaluated the feasibility of extracting organic pesticides in soil using a hot-water percolation apparatus at 105 degrees C and 120 kPa pressure. Efficiency of the method was assessed by extracting six selected pesticides (acetochlor, atrazine, diazinon, carbendazim, imidacloprid, and isoproturon) ...
SAMPLING AND MEASURING DEVICE FOR SAMPLE WATER, AN 优质文献 相似文献Intelligent waste water sampling control system and sampling control method thereof water sample storage device and a pollutant concentration on-line tester, wherein, the flowmeter is used for measuring the flow of discharged waste wa...
A probability sample is defined as a sampling method that requires a complete and up-to-date list of the members of the population under investigation, which is typically absent in non-probability samples. AI generated definition based on: Encyclopedia of Social Measurement, 2005 ...
portion, part, or fraction of the whole group, and acts as a subset of that population.1Samples are used in a variety of settings where research is conducted. Scientists,marketers, government agencies, economists, and research groups are among those who use samples for their studies and ...