Results 51 to 60 of about 1,497,290 (270)
Population Ecology, EarlyView.We investigate the seasonal dynamics of two freshwater snails, Biomphalaria straminea and Melanoides tuberculata, in artificial reservoirs of the Brazilian semiarid region. Despite regulated hydrology, B. straminea exhibited strong seasonal fluctuations associated with dry periods, while M. tuberculata maintained stable populations throughout the year,
Lucas Henrique Sousa da Silva +6 more
wiley +1 more source
Sample size and power determination when limited preliminary information is available
BMC Medical Research Methodology, 2017 Background We describe a novel strategy for power and sample size determination developed for studies utilizing investigational technologies with limited available preliminary data, specifically of imaging biomarkers.
Christine E. McLaren +6 more
doaj +1 more source
Nested Maximum Entropy Designs for Computer Experiments
Mathematics, 2023 Presently, computer experiments with multiple levels of accuracy are widely applied in science and engineering. This paper introduces a class of nested maximum entropy designs for such computer experiments.
Weiyan Mu, Chengxin Liu, Shifeng Xiong
doaj +1 more source
Soil particle-size analysis: A comparison of two methods [PDF]
, 2003 Knowing the proportion of particle sizes in soil is important to soil scientists and agronomists. The mixture of sand, silt, and clay influences water movement, solute transport, nutrient retention, and many other properties and processes in soil.
Brye, Kristofor +2 more
core +2 more sources
Using historical lesion volume data in the design of a new phase II clinical trial in acute stroke [PDF]
, 2009 <p><b>Background and Purpose:</b> Clinical research into the treatment of acute stroke is complicated, is costly, and has often been unsuccessful.
Ali, M. +5 more
core +1 more source
Moving in the Dark: Enlightening the Spatial Population Ecology of European Cave Salamanders
Population Ecology, EarlyView.We assessed individual interactions, movement ecology and activity patterns of a subterranean population of Speleomantes strinatii, applying spatial capture–recapture modeling to a photographic dataset of 104 individuals. ABSTRACT Space use and movement are fundamental aspects of organisms' ecology, mirroring individual fitness, behavior, and life ...
Giacomo Rosa +2 more
wiley +1 more source
Sample Size Determination in Medical Education Research [PDF]
Strides in Development of Medical Education, 2022 Sara Shafian +2 more
doaj +1 more source
Sample Size Determination in Randomised Controlled Clinical Trials: A Narrative Review [PDF]
Journal of Clinical and Diagnostic ResearchThis article summarises efforts towards understanding the calculation of sample size determination in Randomised controlled Clinical Trials (RCTs). Readers would gain insight into the procedures behind sample size calculation in RCTs and its significance.
Rakesh Diliprao Kothavale +3 more
doaj +1 more source
FoxO1 signaling in B cell malignancies and its therapeutic targeting
FEBS Letters, EarlyView.FoxO1 has context‐specific tumor suppressor or oncogenic character in myeloid and B cell malignancies. This includes tumor‐promoting properties such as stemness maintenance and DNA damage tolerance in acute leukemias, or regulation of cell proliferation and survival, or migration in mature B cell malignancies.
Krystof Hlavac +3 more
wiley +1 more source
Some Practical Guidelines for Effective Sample-Size Determination in Observational Studies
Aceh International Journal of Science and Technology, 2013 - The purpose of this present study was to determine the right sample size in observational study which is focusing on medical or health sciences field. Sample size calculation is actually depends on the type of how the study is designed.
Wan Muhamad Amir Wan Ahmad +3 more
doaj +1 more source