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

Hydraulic Jump: Problem Solving01:16

Hydraulic Jump: Problem Solving

583
To analyze a hydraulic jump in a rectangular channel with a flow speed of 6 meters per second, follow these steps:Calculate Effective Upstream Velocity:When the downstream gate closes, a hydraulic jump forms, traveling upstream at 2 meters per second. This wave speed combines with the initial channel flow velocity, creating an effective upstream velocity.Identify Flow Velocities Before and After the Hydraulic Jump:Upstream of the hydraulic jump, the effective flow velocity includes both the...
583
Turbulent Flow: Problem Solving01:09

Turbulent Flow: Problem Solving

435
Carbonation is a process used to dissolve carbon dioxide gas in a liquid, commonly used in the production of carbonated beverages. Achieving efficient carbonation requires careful control of temperature, pressure, and flow conditions. By adjusting these parameters, carbonation efficiency can be maximized, producing a higher concentration of CO2 in the liquid.
Temperature is a key factor in CO2 solubility. In this case, the CO2 gas and the liquid are cooled to 20°C. Lower temperatures enhance...
435
Laminar Flow: Problem Solving01:24

Laminar Flow: Problem Solving

533
Laminar flow occurs when a fluid moves smoothly in parallel layers with minimal mixing and turbulence. In fluid mechanics, ensuring laminar flow within a pipe is essential for precise control of flow characteristics, especially in engineering applications. The key factor in determining whether flow remains laminar is the Reynolds number, a dimensionless quantity that depends on the fluid's velocity, density, viscosity, and the pipe's diameter. A Reynolds number of 2100 or lower...
533
Gradually Varying Flow01:29

Gradually Varying Flow

459
Gradually varying flow (GVF) in open channels describes situations where water depth changes slowly along the channel due to factors like non-uniform bed slope, channel shape variations, or obstructions. This flow type occurs when the depth adjusts gradually to balance gravitational forces, shear forces, and energy requirements, resulting in a low rate of depth change.Characteristics of Gradually Varying FlowGVF is commonly observed in natural streams, rivers, and canals, where flow depth...
459
Pre-Procedural Guidelines for Assessing Blood Pressure01:10

Pre-Procedural Guidelines for Assessing Blood Pressure

901
Accurate blood pressure assessment is crucial for diagnosing and managing various health conditions. To ensure the reliability of these measurements, healthcare professionals must adhere to standardized pre-procedural guidelines. These guidelines enhance patient safety and improve the overall quality of healthcare. The following steps are essential for obtaining accurate and consistent blood pressure readings, from using the appropriate tools to ensuring effective communication with the...
901
Statically Indeterminate Problem Solving01:16

Statically Indeterminate Problem Solving

760
Statically indeterminate problems are those where statics alone can not determine the internal forces or reactions. Consider a structure comprising two cylindrical rods made of steel and brass. These rods are joined at point B and restrained by rigid supports at points A and C. Now, the reactions at points A and C and the deflection at point B are to be determined. This rod structure is classified as statically indeterminate as the structure has more supports than are necessary for maintaining...
760

You might also read

Related Articles

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

Sort by
Same author

Emotional Daily Life Library (E-DLL): Validation of a database of 3D objects for emotion elicitation.

International journal of clinical and health psychology : IJCHP·2026
Same authorSame journal

Effectiveness of Virtual Reality-Based Simulation Using the Nintendo Wii Balance Board for Assessing the Risk of Falls in Young and Older Adults.

Games for health journal·2026
Same author

IDEA-FAST clinical study protocol: Identifying digital end-points of fatigue, sleep quality and daytime sleepiness in N = 2000.

Digital health·2026
Same author

Mind-wandering facilitates creative performance in a musical improvisation task.

Consciousness and cognition·2026
Same author

EEG-based predictors of motor recovery during immersive VR-BCI rehabilitation.

Scientific reports·2026
Same author

Systematic review update of organisational-level mental health promotion interventions: evidence from healthcare, construction, and telework-based mobile work settings.

International archives of occupational and environmental health·2026

Related Experiment Video

Updated: Feb 19, 2026

Combining Computer Game-Based Behavioural Experiments With High-Density EEG and Infrared Gaze Tracking
13:40

Combining Computer Game-Based Behavioural Experiments With High-Density EEG and Infrared Gaze Tracking

Published on: December 16, 2010

17.3K

Flow Optimizer Framework: Validation of a Dynamic Difficulty Adjustment System for Serious Games.

Rodrigo Lima1,2, Diogo Branco1,2, Pedro Lobo1,2

  • 1Faculdade de Ciências Exatas e Engenharia & NOVA-LINCS, Campus Universitário da Penteada, Universidade da Madeira, Funchal, Portugal.

Games for Health Journal
|February 17, 2026
PubMed
Summary
This summary is machine-generated.

The Flow Optimizer Framework (FOF) enhances serious games with dynamic difficulty adjustment (DDA). Biofeedback using heart rate integration led to the best engagement and performance in rehabilitation games.

Keywords:
Adaptive systemsBiofeedbackDynamic difficulty adjustmentNeurorehabilitationPhysiological signalsSerious games

More Related Videos

WheelCon: A Wheel Control-Based Gaming Platform for Studying Human Sensorimotor Control
08:18

WheelCon: A Wheel Control-Based Gaming Platform for Studying Human Sensorimotor Control

Published on: August 15, 2020

5.5K

Related Experiment Videos

Last Updated: Feb 19, 2026

Combining Computer Game-Based Behavioural Experiments With High-Density EEG and Infrared Gaze Tracking
13:40

Combining Computer Game-Based Behavioural Experiments With High-Density EEG and Infrared Gaze Tracking

Published on: December 16, 2010

17.3K
WheelCon: A Wheel Control-Based Gaming Platform for Studying Human Sensorimotor Control
08:18

WheelCon: A Wheel Control-Based Gaming Platform for Studying Human Sensorimotor Control

Published on: August 15, 2020

5.5K

Area of Science:

  • Game Design
  • Human-Computer Interaction
  • Rehabilitation Technology

Background:

  • Serious games struggle with engagement and adherence due to repetitive gameplay.
  • Dynamic difficulty adjustment (DDA) systems can improve player engagement and maintain a flow state.
  • Existing DDA systems lack adaptability and are difficult to integrate into various serious games.

Purpose of the Study:

  • Introduce the Flow Optimizer Framework (FOF), a game-agnostic DDA system for Unity.
  • Facilitate the integration of DDA algorithms into serious games for real-time player adaptation.
  • Evaluate the effectiveness of FOF in enhancing player flow state and usability.

Main Methods:

  • Technical validation of FOF for real-time data handling and responsiveness.
  • Usability study evaluating three DDA paradigms (Implicit, Explicit, Subjective) within FOF.
  • Assessment of game performance and player experience across different DDA implementations.

Main Results:

  • The biofeedback paradigm using heart rate significantly increased game performance.
  • Participants found the heart rate biofeedback condition most enjoyable and skill-appropriate.
  • FOF demonstrated effective real-time data processing, rule-setting, and decision-making for DDA.

Conclusions:

  • Participants reported high usability and presence when using serious games integrated with FOF.
  • FOF provides a flexible and effective solution for integrating DDA into Unity-based serious games.
  • Heart rate biofeedback shows promise for optimizing player experience in serious games.