Results 1 to 10 of about 435,760 (256)

A modified version of diagonal systematic sampling in the presence of linear trend. [PDF]

PLoS ONE, 2022
Systematic sampling is one of the simplest and popular methods for selecting a random sample from a finite population. The diagonal systematic sampling scheme is a type of systematic sampling design which has gained the attention of researchers during ...
Muhammad Azeem
doaj   +2 more sources

An improved version of systematic sampling design for use with linear trend data [PDF]

Heliyon, 2023
Muhammad Azeem, Abdul Salam, Musarrat Ijaz   +2 more
exaly   +2 more sources

Conducting systematic sampling

Indian Journal of Occupational and Environmental Medicine, 2015
Raina SK.
openaire   +4 more sources

Estimation of multivariate design quantiles for drought characteristics using joint return period analysis, Vine copulas, and the systematic sampling method

Journal of Water and Climate Change, 2023
The Wei River Basin has suffered from severe droughts. It is essential to build drought relief projects to cope with drought disasters. Traditionally, design quantiles have been estimated using univariate analysis, in which multiple characteristics of ...
Jie Yang, Jun Yao
doaj   +1 more source

Tardigrades from Iztaccíhuatl Volcano (Trans-Mexican Volcanic Belt), with the Description of Minibiotus citlalium sp. nov. (Eutardigrada: Macrobiotidae)

Diversity, 2020
The study of tardigrade diversity in Mexico is at early stage of development, to date, 56 extant species have been reported. To identify the tardigrade fauna associated with mosses in the Iztaccíhuatl volcano, we performed a systematic sampling along an ...
Alba Dueñas-Cedillo, Evelyn Martínez-Méndez, Jazmín García-Román, Francisco Armendáriz-Toledano, Enrico Alejandro Ruiz   +4 more
doaj   +1 more source

A PRELIMINARY STUDY OF SENTIMENT ANALYSIS ON COVID-19 NEWS: LESSON LEARNED FROM DATA ACQUISITION, PRE-PROCESSING, AND DESCRIPTIVE ANALYTICS

Barekeng, 2023
Sentiment analysis is a method used to analyze opinions and feelings. The goal of sentiment analysis is to determine whether a document contains a positive or negative emotion.
Rahmatin Nur Amalia, Kusman Sadik, Khairil Anwar Notodiputro   +2 more
doaj   +1 more source

Modified Systematic Sampling with Multiple Random Starts

Revstat Statistical Journal, 2018
Systematic sampling has been facing two problems since its beginning; situational complications, e.g., population size N not being a multiple of the sample size n, and unavailability of unbiased estimators of population variance for all possible ...
Sat Gupta , Zaheen Khan , Javid Shabbir
doaj   +1 more source

Determination of Sample Size and Observation Units

International Journal of Assessment Tools in Education, 2019
The purpose of this study was to write programsto define sampling sizes and observation units by probability sampling methodsand to provide an idea for software developers. Thealgorithms of the programs were written in Python 3.
Tülin Acar
doaj   +1 more source

About the benefits of poststratification in forest inventories

Journal of Forest Science, 2007
A large virtual population is created based on the GIS data base of a forest district and inventory data. It serves as a population where large scale inventories with systematic and simple random poststratified estimators can be simulated and the gains ...
J. Saborowski, J. Cancino
doaj   +1 more source

Efficiency of adaptive cluster sampling and traditional sampling for coastal mangrove in Hainan of China

Journal of Forest Science, 2012
Based on two species of Coastal Mangrove in Hainan of China, Sonneratia Apetala Buch-Ham and Sonneratia caseoli, we estimated the density of the two species to evaluate the efficiency of adaptive cluster sampling (ACS), simple random sampling (SRS) and ...
Y. Lei, J. Shi, T. Zhao
doaj   +1 more source