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Research Design: A plan for collecting and utilizing data so that desired information can be obtained with sufficient precision or so that an hypothesis can be tested properly.
 JoVE Bioengineering

Rapid and Low-cost Prototyping of Medical Devices Using 3D Printed Molds for Liquid Injection Molding

1Department of Bioengineering & Therapeutic Sciences, University of California, San Francisco, 2Department of Obstetrics, Gynecology & Reproductive Sciences, University of California, San Francisco, 3Keck School of Medicine, University of Southern California


JoVE 51745

 JoVE Engineering

In Situ Neutron Powder Diffraction Using Custom-made Lithium-ion Batteries

1School of Chemistry, University of Sydney, 2Institute for Superconducting & Electronic Materials, University of Wollongong, 3Australian Synchrotron, 4Australian Nuclear Science and Technology Organisation, 5School of Mechanical, Materials, and Mechatronic Engineering, University of Wollongong, 6School of Chemistry, University of New South Wales


JoVE 52284

 Science Education: Essentials of Experimental Psychology

The Factorial Experiment

JoVE Science Education

Source: Laboratories of Gary Lewandowski, Dave Strohmetz, and Natalie Ciarocco—Monmouth University

A factorial design is a common type of experiment where there are two or more independent variables. This video demonstrates a 2 x 2 factorial design used to explore how self-awareness and self-esteem may influence the ability to decipher nonverbal signals. This video leads students through the basics of a factorial design including, the nature of a factorial design and what distinguishes it from other designs, the benefits of factorial design, the importance and nature of interactions, main effect and interaction hypotheses, and how to conduct a factorial experiment.

 JoVE Bioengineering

A Protocol for Bioinspired Design: A Ground Sampler Based on Sea Urchin Jaws

1Materials Science and Engineering Program, University of California, San Diego, 2Department of Mechanical and Aerospace Engineering, University of California, San Diego, 3Integrative Oceanography Division, Center for Marine Biodiversity and Conservation, Scripps Institution of Oceanography, 4Marine Biology Research Division, Scripps Institution of Oceanography


JoVE 53554

 JoVE Environment

Methods of Soil Resampling to Monitor Changes in the Chemical Concentrations of Forest Soils

1New York Water Science Center, U.S. Geological Survey, 2School of Forest Resources, University of Maine, 3Natural Resources Canada, Canadian Forest Service, 4Northern Research Station, U.S. Forest Service, 5Department of Plant and Soil Science, University of Vermont, 6Ottauquechee NRCD, USDA Natural Resources Conservation Service, 7Green Mountain National Forest, U.S. Forest Service, 8Direction de la Recherche Forestière, Ministère du Québec, 9Department of Civil and Environmental Engineering, Syracuse University, 10Division of Environmental Science, SUNY College of Environmental Science and Forestry, 11White Mountain National Forest, U.S. Forest Service, 12Natural Resources and Earth System Sciences, University of New Hampshire, 13Greenwich, NY Field Office, USDA Natural Resources Conservation Service


JoVE 54815

 Science Education: Essentials of Experimental Psychology

The Multi-group Experiment

JoVE Science Education

Source: Laboratories of Gary Lewandowski, Dave Strohmetz, and Natalie Ciarocco—Monmouth University

A multi-group design is an experimental design that has 3 or more conditions/groups of the same independent variable. This video demonstrates a multi-group experiment that examines how different interethnic ideologies (multiculturalism and color-blind) influence feelings about diversity and actions toward and out-group member. In providing an overview of how a researcher conducts a multi-group experiment, this video shows viewers how to distinguish levels in variables, common types of conditions/groups to use (including placebo and empty-control conditions/groups), the process of conducting the study, the collection of results, and the consideration of their implications.   

 JoVE Immunology and Infection

Multi-target Parallel Processing Approach for Gene-to-structure Determination of the Influenza Polymerase PB2 Subunit

1Protein Crystallization Lab, Emerald Bio, 2Molecular Biology Lab, Emerald Bio, 3Scientific Sales Representative, Emerald Bio, 4Group Leader II, Emerald Bio, 5Group Leader I, Emerald Bio, 6Chair of Advisory Board, Emerald Bio, 7Director of Multi-Target Services, Emerald Bio, 8Senior Project Leader, Emerald Bio, 9Project Leader II & SSGCID Site Manager, Emerald Bio


JoVE 4225

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