15 papers · ranked by Valyu relevance
Pengcheng Zhao, Pak-To Chan, Nan Zhang, Yuguo Li + 3 more
'Lauren Petrick' 'Maaike van Gerwen'] Surface sampling is a frequent task in laboratory work and field studies. Simple methods usually have low efficiency in collecting target substances from surfaces. This study developed an advanced tape-stripping approach for efficient sampling on non-absorbent surfaces. A…
Kari Oline Bøifot, Gunnar Skogan, Marius Dybwad
Aerosol microbiome studies have received increased attention as technological advancements have made it possible to dive deeper into the microbial diversity. To enhance biomass collection for metagenomic sequencing, long-term sampling is a common strategy. While the impact of prolonged sampling times on microorganisms’…
Jianshu Guo, Xinying Zheng, Tongtong Qin, Meng Lv + 8 more
'Xiaolin Song' 'Hongying Qiu' 'Lingfei Hu' 'Lili Zhang' 'Dongsheng Zhou' 'Yansong Sun' 'Wenhui Yang'] Aerosol samplers are critical tools for studying indoor and outdoor aerosols. Development and evaluation of samplers is often labor-intensive and time-consuming due to the need to use monodisperse aerosols spanning a…
Meznah Almutairy, Eric Torng, Ruslan Kalendar
One of the most common ways to search a sequence database for sequences that are similar to a query sequence is to use a k-mer index such as BLAST. A big problem with k-mer indexes is the space required to store the lists of all occurrences of all k-mers in the database. One method for reducing the space needed, and…
Muhammad Azeem, Sundus Hussain, Musarrat Ijaz, Najma Salahuddin + 1 more
'Abdul Salam'] In survey sampling, systematic sampling design has attracted survey researchers in recent years due to its simplicity of use. We introduce a modified variant of systematic sampling scheme which improves the efficiency of a recently developed diagonal systematic sampling method. The suggested modification…
Frank J. van Rijnsoever, Gemma Elizabeth Derrick
I explore the sample size in qualitative research that is required to reach theoretical saturation. I conceptualize a population as consisting of sub-populations that contain different types of information sources that hold a number of codes. Theoretical saturation is reached after all the codes in the population have…
Mohammad Salehi, David R. Smith, Inés P. Mariño
Sampling rare and clustered populations is challenging because of the effort required to find rare units. Heuristically, a practitioner would prefer to discontinue sampling in areas where rare units of interest are apparently extremely sparse or absent. We take advantage of the characteristics of inverse sampling to…
Kishore L, Geetha E, Shivaprasad S P, Sachin R Chandra + 1 more
Background Data Envelopment Analysis (DEA) methodology is considered the most suitable approach for relative performance efficiency calculation for banks as it is believed to be superior to traditional ratio-based analysis and other conventional performance evaluations. This study provides statistical evidence on the…
Bo Jiao
Graph sampling plays an important role in data mining for large networks. Specifically, larger networks often correspond to lower sampling rates. Under the situation, traditional traversal-based samplings for large networks usually have an excessive preference for densely-connected network core nodes. Aim at this…
Michael DiNicola, Arman Seuylemezian, Lisa Guan, Christine Moissl-Eichinger + 3 more
'Christine Moissl-Eichinger' 'Amy Baker' 'Jason Johns' 'Jennifer B. Glass'] Title: ABSTRACT Planetary protection is a discipline dedicated to preventing biological contamination between celestial bodies and Earth during space exploration to ensure the integrity of scientific research. National space agencies such as…
Mohsin Abbas, Muhammad Ahmed Shehzad, Mahwish Rabia, Haris Khurram + 2 more
'Muhammad Ijaz' 'Eugene Demidenko'] Accurate estimation of the finite population mean is a fundamental challenge in survey sampling, especially when dealing with large or complex populations. Traditional methods like simple random sampling may not always provide reliable or efficient estimates in such cases. Motivated…
Syed Abdul Rehman, Laila A. Al-Essa, Javid Shabbir, Zaheen Khan
Non-response is a common problem faced by surveyors while conducting surveys; this introduces a potential bias in the estimates of population parameters. One method of dealing with non-response is subsampling of the non-respondents, which increases precision in estimates by increasing the sample size. This study…
Rabail Alam, Muhammad Hanif, Saman Hanif Shahbaz, Muhammad Qaiser Shahbaz
'Muhammad Qaiser Shahbaz'] In biological and medical research, the cost and collateral damage caused during the collection and measurement of a sample are the reasons behind a compromise on the inference with a fixed and accepted approximation error. The ranked set sampling (RSS) performs better in such scenarios, and…
Svend Erik Mathiassen, Amanda Waleh Åström, Annika Strömberg, Marina Heiden
In [pone.0307247.g001], the efficiency ordinate scale in panel B is incorrect. Please see the correct [pone.0307247.g001] here. Enlarged sections of Fig 1, corresponding to the examples in the running text of sampling efficiency for different strategies at a specified budget ([pone.0307247.g001]), and costs for…
Svend Erik Mathiassen, Kristian Bolin
Background Reliable exposure data is a vital concern in medical epidemiology and intervention studies. The present study addresses the needs of the medical researcher to spend monetary resources devoted to exposure assessment with an optimal cost-efficiency, i.e. obtain the best possible statistical performance at a…