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Related Concept Videos

Design Example01:23

Design Example

323
The innovation of touch-tone telephony revolutionized the telecommunications industry by replacing the traditional rotary dial with a dual-tone multi-frequency (DTMF) signaling system. This system uses a matrix-style keypad with buttons arranged in four rows and three columns, creating 12 distinct signals each assigned to a pair of frequencies. Each button press results in a simultaneous generation of two sinusoidal tones – one from a low-frequency group (697 to 941 Hz) and one from a...
323
Design Example: Resistive Touchscreen01:14

Design Example: Resistive Touchscreen

301
A device engineer plays a crucial role in designing user interfaces for mobile devices. One such interface is the resistive touchscreen, which fundamentally consists of two metallic layers: a flexible upper layer and a rigid lower layer, separated by a narrow gap. The high resistance between these two layers is a key characteristic of this design.
When a user touches the screen, the two layers make contact at a specific point known as the touchpoint. This contact reduces the resistance between...
301
Decision Making01:20

Decision Making

103
Decision-making is a fundamental cognitive process that involves evaluating alternatives and selecting among them. This process can range from simple choices, such as deciding what to wear, to complex decisions, like choosing a major in college or a career path. The complexity of the decision often dictates the approach we use, which can be broadly categorized into two types: automatic and controlled decision-making.
Automatic decision-making is fast, intuitive, and relies on gut feelings...
103
Design Consideration01:22

Design Consideration

185
Designing a structure involves a series of considerations, primarily the material's ultimate strength, calculated through tests that measure changes under increased force until the material reaches its breaking point or limit. The ultimate load, where the material breaks, is divided by its original cross-sectional area, resulting in the ultimate normal stress or strength. The ultimate shearing stress is another significant factor taken into account.
The factor of safety is another key...
185
Reason and Intuition01:37

Reason and Intuition

6.4K
The human brain processes information for decision-making using one of two routes: an intuitive system and a rational system (Epstein, 1994; popularized by Kahneman, 2011 as System 1 and System 2, respectively). The intuitive system is quick, impulsive, and operates with minimal effort, relying on emotions or habits to provide cues for what to do next, while the rational system is logical, analytical, deliberate, and methodical. Research in neuropsychology suggests that the...
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Controller Configurations01:22

Controller Configurations

90
Controller configurations are crucial in a car's cruise control system because they manage speed over time to maintain a consistent pace regardless of road conditions, thereby meeting design goals. In traditional control systems, fixed-configuration design involves predetermined controller placement. System performance modifications are known as compensation.
Control-system compensation involves various configurations, most commonly series or cascade compensation, in which the controller...
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Related Experiment Video

Updated: Jun 19, 2025

An Assessment Method and Toolkit to Evaluate Keyboard Design on Smartphones
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HELPeR: Interface Design Decision and Evaluation.

Khushboo Thaker1, Behnam Rahadari1, Vivian Hui2

  • 1School of Computing and Information, University of Pittsburgh, USA.

Studies in Health Technology and Informatics
|July 25, 2024
PubMed
Summary
This summary is machine-generated.

Health recommender systems can help ovarian cancer patients find crucial information. HELPeR, a new system, addresses information access challenges for these patients, improving health equity.

Keywords:
Cold-startHealth Recommender SystemSystem Design

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Area of Science:

  • Health Informatics
  • Oncology
  • Information Science

Background:

  • Health information access inequities exacerbate health outcome disparities.
  • Health recommender systems offer a potential solution for information retrieval.
  • Limited research exists on recommender systems for cancer patient support.

Purpose of the Study:

  • To introduce HELPeR, a novel recommender system tailored for ovarian cancer patients.
  • To address the challenge of providing relevant information to cancer patients with limited prior data (cold-start problem).
  • To explore the utility of health expert input and patient forum data in system design.

Main Methods:

  • Designed HELPeR incorporating insights from health experts and ovarian cancer patient forum discussions.
  • Focused on mitigating cold-start issues inherent in recommender systems.
  • Conducted an evaluation of HELPeR with nurse practitioners in a cold-start setting.

Main Results:

  • The evaluation highlighted the potential benefits of HELPeR for ovarian cancer patients.
  • Identified specific areas for future development and enhancement of the system.
  • Demonstrated the feasibility of using expert and patient-generated data for recommender system design.

Conclusions:

  • HELPeR shows promise in assisting ovarian cancer patients with their information needs.
  • Addressing cold-start challenges is critical for effective health recommender systems.
  • Further research and development can optimize HELPeR for improved patient support and health equity.