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Least-Squares Analysis: A principle of estimation in which the estimates of a set of parameters in a statistical model are those quantities minimizing the sum of squared differences between the observed values of a dependent variable and the values predicted by the model.
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Construction of Models for Nondestructive Prediction of Ingredient Contents in Blueberries by Near-infrared Spectroscopy Based on HPLC Measurements

1United Graduate School of Agricultural Science, Tokyo University of Agriculture and Technology, 2Faculty of Agriculture, Tokyo University of Agriculture and Technology, 3Institute of Agriculture, Tokyo University of Agriculture and Technology

JoVE 53981


 Chemistry

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Electric-field Control of Electronic States in WS2 Nanodevices by Electrolyte Gating

1Quantum-Phase Electronics Center (QPEC) and Department of Applied Physics, The University of Tokyo, 2Materials Sciences Division, Lawrence Berkeley National Laboratory, 3Institute of Scientific and Industrial Research, Osaka University, 4RIKEN Center for Emergent Matter Science (CEMS)

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JoVE 56862


 JoVE In-Press

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The Precision of Visual Working Memory with Delayed Estimation

JoVE 10020

Source: Laboratory of Jonathan Flombaum—Johns Hopkins University

Human memory is limited. Throughout most of its history, experimental psychology has focused on investigating the discrete, quantitative limits of memory—how many individual pieces of information a person can remember. Recently, experimental psychologists have also become interested in more qualitative limits—how precisely is information stored? The concept of memory precision can be both intuitive and elusive at once. It is intuitive, for example, to think a person can remember precisely how their mother sounds, making it possible to recognize one’s mother immediately over the phone or in a crowd. But how can one quantify the precision of such a memory? Exactly how similar is the memory to the voice itself? To study the precision of memory and working memory, in particular, experimental psychologists have devised a paradigm known as delayed estimation. It has been used most often, thus far, to study the precision of visual memories, especially memory for color, and to understand how memory degrades the more one tries to remember at once. This video demonstrates standard procedures for investigating the precision of color working memory using delayed estim


 Cognitive Psychology

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A Method for Determination and Simulation of Permeability and Diffusion in a 3D Tissue Model in a Membrane Insert System for Multi-well Plates

1Institute of Bioprocess and Biosystems Engineering, Hamburg University of Technology, 2Institute of Biotechnology, Department Medical Biotechnology, Technische Universität Berlin, 3TissUse GmbH

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JoVE 56412


 JoVE In-Press

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Quantitative Magnetic Resonance Imaging of Skeletal Muscle Disease

1Institute of Imaging Science, Vanderbilt University, 2Department of Radiology and Radiological Sciences, Vanderbilt University, 3Department of Biomedical Engineering, Vanderbilt University, 4Department of Molecular Physiology and Biophysics, Vanderbilt University, 5Department of Physical Medicine and Rehabilitation, Vanderbilt University, 6Department of Physics and Astronomy, Vanderbilt University

JoVE 52352


 Medicine

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Identifying DNA Mutations in Purified Hematopoietic Stem/Progenitor Cells

1Greehey Children's Cancer Research Institute, UT Health Science Center at San Antonio, 2Department of Cellular and Structural Biology, UT Health Science Center at San Antonio, 3Department of Pathology, UT Health Science Center at San Antonio, 4Department of Microbiology, UT Health Science Center at San Antonio, 5Cancer Therapy and Research Center, UT Health Science Center at San Antonio

JoVE 50752


 Immunology and Infection

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Method of Standard Addition

JoVE 10201

Source: Laboratory of Dr. Paul Bower - Purdue University

The method of standard additions is a quantitative analysis method, which is often used when the sample of interest has multiple components that result in matrix effects, where the additional components may either reduce or enhance the analyte absorbance signal. That results in significant errors in the analysis results. Standard additions are commonly used to eliminate matrix effects from a measurement, since it is assumed that the matrix affects all of the solutions equally. Additionally, it is used to correct for the chemical phase separations performed in the extraction process. The method is performed by reading the experimental (in this case fluorescent) intensity of the unknown solution and then by measuring the intensity of the unknown with varying amounts of known standard added. The data are plotted as fluorescence intensity vs. the amount of the standard added (the unknown itself, with no standard added, is plotted ON the y-axis). The least squares line intersects the x-axis at the negative of the concentration of the unknown, as shown in Figure 1. Figure 1Results below contain some, but not all of your search terms.

Preparation of Mica and Silicon Substrates for DNA Origami Analysis and Experimentation

1Department of Chemistry and Biochemistry, University of Notre Dame, 2Department of Chemical and Biomolecular Engineering, University of Notre Dame, 3Department of Chemistry, Physics, and Engineering Studies, Chicago State University, 4Department of Technology, Ivy Tech Community College, South Bend, Indiana

JoVE 52972


 Chemistry

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Atomically Traceable Nanostructure Fabrication

1Zyvex Labs, 2Department of Physics, University of Texas at Dallas, 3Department of Materials Science and Engineering, University of Texas at Dallas, 4Materials Science and Engineering, University of North Texas, 5National Institute of Standards and Technology

JoVE 52900


 Engineering

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Establishment of Cancer Stem Cell Cultures from Human Conventional Osteosarcoma

1Department of Surgery and Translational Medicine (DCMT), University of Florence, 2Neurofarba Department, University of Florence, 3Department of Traumatology and General Orthopedics, Azienda Ospedaliera Universitaria Careggi

JoVE 53884


 Cancer Research

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A Guide to Modern Quantitative Fluorescent Western Blotting with Troubleshooting Strategies

1Division of Neurobiology, The Roslin Institute and Royal (Dick) School of Veterinary Studies, University of Edinburgh, 2Division of Developmental Biology, The Roslin Institute and Royal (Dick) School of Veterinary Studies, University of Edinburgh, 3Centre for Integrative Physiology, University of Edinburgh, 4Euan MacDonald Centre for Motor Neurone Disease Research, University of Edinburgh

JoVE 52099


 Biology

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Automated Measurement of Pulmonary Emphysema and Small Airway Remodeling in Cigarette Smoke-exposed Mice

1Division of Pulmonary and Critical Care Medicine, Brigham and Women's Hospital - Harvard Medical School, 2Department of Respiratory Medicine, University of Cambridge - Addenbrooke's Hospital, 3Lung Transplant Program, Brigham and Women's Hospital - Harvard Medical School, 4COPD and IPF Programs, Lovelace Respiratory Research Institute

JoVE 52236


 Medicine

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Dispersion of Nanomaterials in Aqueous Media: Towards Protocol Optimization

1School of Geography, Earth and Environmental Sciences, University of Birmingham, 2Analytical Science, National Physical Laboratory, 3INAC-LCIB, Université Grenoble Alpes, 4CEA, INAC-SyMMES, 5NIMBE, CEA, CNRS, Université Paris-Saclay, CEA Saclay, 6Chemical, Medical and Environmental Science, National Physical Laboratory, 7BAM Division 6.1 'Surface Analysis and Interfacial Chemistry', BAM Federal Institute for Materials Research and Testing, 8Fraunhofer Institute for Ceramic Technologies and Systems

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JoVE 56074


 JoVE In-Press

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Using Retinal Imaging to Study Dementia

1Department of Ophthalmology and Visual Sciences, The Chinese University of Hong Kong, 2Department of Medicine & Therapeutics, The Chinese University of Hong Kong, 3Therese Pei Fong Chow Research Centre for Prevention of Dementia, The Chinese University of Hong Kong, 4Gerald Choa Neuroscience Centre, The Chinese University of Hong Kong, 5Memory Aging and Cognition Centre, National University Health System, 6Department of Pharmacology, National University of Singapore, 7Singapore Eye Research Institute, Singapore National Eye Centre, 8Duke-NUS Medical School, National University of Singapore

JoVE 56137


 Medicine

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An Investigation of the Effects of Sports-related Concussion in Youth Using Functional Magnetic Resonance Imaging and the Head Impact Telemetry System

1Graduate Department of Rehabilitation Science, University of Toronto, 2Occupational Science and Occupational Therapy, University of Toronto, 3Department of Psychology, University of Toronto, 4Bloorview Kids Rehab, 5Toronto Rehab, 6Cognitive Neurology, Sunnybrook Health Sciences Centre, 7Faculty of Medicine, University of Toronto

JoVE 2226


 Medicine

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Analysis of 18FDG PET/CT Imaging as a Tool for Studying Mycobacterium tuberculosis Infection and Treatment in Non-human Primates

1Department of Microbiology and Molecular Genetics, University of Pittsburgh School of Medicine, 2Department of Pediatrics, Children's Hospital of Pittsburgh, University of Pittsburgh Medical Center

JoVE 56375


 Immunology and Infection

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