Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Switching of BJT01:22

Switching of BJT

867
Switching behavior in Bipolar Junction Transistors (BJTs) is a fundamental aspect utilized in various electronic circuits, particularly for digital logic applications like switches and amplifiers. In a typical switching circuit, a BJT alternates between cut-off and saturation modes, corresponding to the "off" and "on" states, respectively, thus behaving like an ideal switch.
Cut-off Mode ("Off" State): In this state, both the emitter-base and collector-base junctions are...
867
Group Design02:01

Group Design

10.6K
The most basic experimental design involves two groups: the experimental group and the control group. The two groups are designed to be the same except for one difference— experimental manipulation. The experimental group gets the experimental manipulation—that is, the treatment or variable being tested—and the control group does not. Since experimental manipulation is the only difference between the experimental and control groups, we can be sure that any differences between...
10.6K
Optimal Foraging00:48

Optimal Foraging

13.9K
How animals obtain and eat their food is called foraging behavior. Foraging can include searching for plants and hunting for prey and depends on the species and environment.
13.9K
Factorial Design02:01

Factorial Design

14.0K
Factorial Analysis is an experimental design that applies Analysis of Variance (ANOVA) statistical procedures to examine a change in a dependent variable due to more than one independent variable, also known as factors. Changes in worker productivity can be reasoned, for example, to be influenced by salary and other conditions, such as skill level. One way to test this hypothesis is by categorizing salary into three levels (low, moderate, and high) and skills sets into two levels (entry level...
14.0K
Optimization Problems01:26

Optimization Problems

77
Optimization problems often involve identifying maximum or minimum values under specific constraints. A well-known example is determining the longest horizontal pipe that can be moved around a right-angled corner, where a 3-meter-wide hallway meets a 2-meter-wide hallway. This scenario, common in architectural design and industrial transport, can be understood conceptually through geometric and trigonometric reasoning.To visualize the problem, consider the pipe as a straight line that touches...
77
Design Example: Designing a Residential Plumbing System01:25

Design Example: Designing a Residential Plumbing System

1.1K
The design of residential plumbing systems requires carefully evaluating water demand, flow rates, and pressure dynamics to ensure both efficiency and reliability. The nature of water flow within pipes is defined by its Reynolds number, which classifies flow as either laminar (smooth) or turbulent.
1.1K

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Repurposing Candidate Drugs to Prevent SARS-CoV-2: A PharmLines Test-Negative Case-Control Study.

Pharmaceuticals (Basel, Switzerland)·2026
Same author

Benchmarking of AI and Radiologists for Indeterminate Lung Nodule Malignancy Risk Estimation on Screening CT: The LUNA25 Challenge.

Radiology. Artificial intelligence·2026
Same author

Repeatability of AI-quantified incidental findings on lung cancer screening CT scans in the NELSON trial.

European radiology·2026
Same author

Young women with (pre)malignant cervical disease in northern Netherlands: what characterises them - A population-based cohort study.

BMC women's health·2026
Same author

Improvement of Lung Nodule Volumetric Accuracy with Photon-counting Computed Tomography Over Energy-integrating Computed Tomography in Low-dose Screening: A Phantom Study.

Investigative radiology·2026
Same author

CT-based body composition and its change through time in relation to outcomes in participants screened for lung cancer.

EBioMedicine·2026

Related Experiment Video

Updated: Feb 7, 2026

Design and Optimization Strategies of a High-Performance Vented Box
14:23

Design and Optimization Strategies of a High-Performance Vented Box

Published on: June 9, 2023

1.6K

Optimal unidirectional switch designs.

Zhuozhao Zhan1,2, Geertruida H de Bock2, Edwin R van den Heuvel1

  • 1Department of Mathematics and Computer Science, Eindhoven University of Technology, Eindhoven, The Netherlands.

Statistics in Medicine
|July 14, 2018
PubMed
Summary
This summary is machine-generated.

This study introduces an optimal unidirectional switch design for minimizing treatment effect variance. This new design is more efficient than stepped wedge and delayed start designs, especially with varying intraclass correlations.

Keywords:
delayed start designoptimal designrobust designstepped wedge designunidirectional switch design

More Related Videos

Design to Implementation Study for Development and Patient Validation of Paper-Based Toehold Switch Diagnostics
10:42

Design to Implementation Study for Development and Patient Validation of Paper-Based Toehold Switch Diagnostics

Published on: June 17, 2022

3.5K
Using Unidirectional Rotations to Improve Vestibular System Asymmetry in Patients with Vestibular Dysfunction
05:02

Using Unidirectional Rotations to Improve Vestibular System Asymmetry in Patients with Vestibular Dysfunction

Published on: August 30, 2019

7.7K

Related Experiment Videos

Last Updated: Feb 7, 2026

Design and Optimization Strategies of a High-Performance Vented Box
14:23

Design and Optimization Strategies of a High-Performance Vented Box

Published on: June 9, 2023

1.6K
Design to Implementation Study for Development and Patient Validation of Paper-Based Toehold Switch Diagnostics
10:42

Design to Implementation Study for Development and Patient Validation of Paper-Based Toehold Switch Diagnostics

Published on: June 17, 2022

3.5K
Using Unidirectional Rotations to Improve Vestibular System Asymmetry in Patients with Vestibular Dysfunction
05:02

Using Unidirectional Rotations to Improve Vestibular System Asymmetry in Patients with Vestibular Dysfunction

Published on: August 30, 2019

7.7K

Area of Science:

  • Biostatistics
  • Epidemiological Study Design

Background:

  • Stepped wedge and delayed start designs are common in research.
  • These designs can be viewed as specific instances of unidirectional switch designs.

Purpose of the Study:

  • To determine optimal cluster allocation proportions for unidirectional switch designs.
  • To minimize the asymptotic variance of treatment effect estimators.

Main Methods:

  • Developed an optimal design for unidirectional switch designs.
  • Analyzed performance under cross-sectional and longitudinal variance component models.
  • Compared efficiency against stepped wedge and delayed start designs.

Main Results:

  • The optimal unidirectional switch design minimizes asymptotic variance.
  • It demonstrates superior efficiency compared to stepped wedge and delayed start designs.
  • Efficiency gains are dependent on intraclass correlation and cluster size.

Conclusions:

  • The optimal unidirectional switch design offers significant efficiency improvements.
  • Augmenting stepped wedge designs with a pure control pattern enhances efficiency.
  • Robust minimax designs for various switch designs are presented.