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Related Concept Videos

Wood Panel Products01:18

Wood Panel Products

Wood panel products are essential materials used in construction for applications such as flooring, siding, and roofing, typically available in standard dimensions of 4 feet by 8 feet, with thicknesses varying from one-quarter of an inch to one and one-eighth inches. Among the most common types of wood panels is plywood, which is produced by gluing multiple layers of thin wood veneers under pressure. The grain of the outer veneers runs lengthwise, while the grains of the interior layers run...
Electrical Systems01:21

Electrical Systems

In electrical engineering, the analysis of networks composed of passive linear components — resistors (R), capacitors (C), and inductors (L) — is fundamental. These components are organized into circuits where the relationship between input and output can be analyzed using transfer functions. The transfer function of an RLC circuit, which relates the voltage across a capacitor to the input voltage, can be derived using Kirchhoff's laws.
To derive the transfer function, consider an RLC circuit...
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Guidelines and Strategies for Safe Computer Charting

The guidelines and strategies provided by the American Nurses Association (ANA) and the Canadian Nurses Association (CNA) offer essential principles for ensuring safe and secure computer charting systems in healthcare settings. Let's break down each recommendation:
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Feedback control systems01:26

Feedback control systems

Feedback control systems are categorized in various ways based on their design, analysis, and signal types.
Linear feedback systems are theoretical models that simplify analysis and design. These systems operate under the principle that their output is directly proportional to their input within certain ranges. For instance, an amplifier in a control system behaves linearly as long as the input signal remains within a specific range. However, most physical systems exhibit inherent nonlinearity...
PD Controller: Design01:26

PD Controller: Design

In automotive engineering, car suspension systems often employ Proportional Derivative (PD) controllers to enhance performance. PD controllers are utilized to adjust the damping force in response to road conditions. A controller, acting as an amplifier with a constant gain, demonstrates proportional control, with output directly mirroring input.
Designing a continuous-data controller requires selecting and linking components like adders and integrators, which are fundamental in Proportional,...
Power Factor Correction01:20

Power Factor Correction

The power transmission to a factory involves the transfer of apparent power, a combination of active and reactive power. The power factor measures how effectively electrical power is converted into useful work output. The ratio of the real power (KW) that does the work to the apparent power (KVA) supplied to the circuit.

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Related Experiment Video

Updated: Jun 18, 2026

An Optimized Rhizobox Protocol to Visualize Root Growth and Responsiveness to Localized Nutrients
07:45

An Optimized Rhizobox Protocol to Visualize Root Growth and Responsiveness to Localized Nutrients

Published on: October 22, 2018

Building and managing an online panel with phpPanelAdmin.

Anja S Göritz1

  • 1University of Erlangen-Nürnberg, Nürnberg, Germany. anja.goeritz@psychologie.uni-wuerzburg.de

Behavior Research Methods
|November 10, 2009
PubMed
Summary

Researchers can now easily create and manage online research panels using phpPanelAdmin, a free, open-source web platform. This tool simplifies data collection and panel management for social and behavioral research.

Area of Science:

  • Social and Behavioral Sciences
  • Computer Science
  • Information Management

Background:

  • Online data collection is rapidly expanding in social and behavioral research.
  • Researchers frequently utilize online panels for surveying participants.
  • Managing these panels presents significant logistical challenges.

Purpose of the Study:

  • To introduce phpPanelAdmin, a web-based platform designed to streamline the setup and management of online research panels.
  • To provide researchers with a cost-free and flexible solution for online data collection.

Main Methods:

  • phpPanelAdmin is an open-source software available under the GNU General Public License.
  • The platform offers a user-friendly interface for panel creation and administration.

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  • It supports integration with existing panels and offline subject pools.
  • Main Results:

    • phpPanelAdmin enables rapid panel setup, reducing setup time from weeks to minutes.
    • The platform automates database management, sample drawing, and email communication.
    • Features include data export, statistical displays, duplicate identification, and SQL execution.

    Conclusions:

    • phpPanelAdmin significantly lowers the barrier to entry for conducting online research.
    • The software empowers researchers with efficient tools for managing participant data and research logistics.
    • Its open-source nature ensures accessibility and adaptability for diverse research needs.