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Inventions, Volume 10, Issue 1

February 2025 - 20 articles

Cover Story: Hearing loss resulting from prolonged exposure to loud noise is known as noise-induced hearing loss (NIHL), and it often affects professionals exposed to occupational sources of high sound levels. The study aims to develop a new individual hearing protection device called the “dynamic earplug”, which protects from high-frequency noise and amplifies speech frequencies. Testing with the Fonix 7000 Hearing Aid Test System showed effective filtering of high frequencies (above 4000 Hz) from dental instruments and a speech frequency amplification of up to 13 dB (500 Hz–1000 Hz). The dynamic earplug shows promise as an efficient and comfortable hearing protection solution for professionals exposed to high-frequency noise. View this paper
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Articles (20)

  • Article
  • Open Access
1 Citations
2,724 Views
37 Pages

Development and Usability Evaluation of Inventive and Repurposable Children’s Furniture

  • Zhi Yuan Phuah,
  • Poh Kiat Ng,
  • Chai Hua Tay,
  • Boon Kian Lim,
  • Kia Wai Liew and
  • Peng Lean Chong

17 February 2025

This study developed inventive and repurposable children’s furniture to improve functionality and extend product lifespan. Unlike typical cribs which serve a single purpose, the proposed design supports multiple functions: crib, cushioned chair...

  • Review
  • Open Access
3 Citations
3,067 Views
18 Pages

12 February 2025

The last thirty years have brought an evolution of electrical power systems. The integration of renewable energy and energy storage, dynamic loads, or distributed resources based on power electronics, including communications systems and protocols, i...

  • Article
  • Open Access
1,425 Views
12 Pages

An Efficient Contamination-Reducing Closet for Reusing Protective Clothing

  • Xing Qiu,
  • Jeffery C. C. Lo,
  • Yuanjie Cheng,
  • Hua Xu,
  • Qianwen Xu and
  • Shi-Wei Ricky Lee

10 February 2025

A professional closet with highly efficient disinfection for reusing protective clothing is required to reduce supply and demand and protect the environment. A self-developed ultraviolet-C (UVC) light-emitting diode (LED) package that can emit unifor...

  • Article
  • Open Access
1,238 Views
11 Pages

Contact noise, often arising from frictional vibrations in mechanical systems, significantly impacts performance and user experience. This study investigates the generation of contact noise due to the elastic recovery of surface asperities during sph...

  • Article
  • Open Access
1,477 Views
16 Pages

As energy and carbon markets evolve, it has emerged as a prevalent trend for multiple virtual power plants (VPPs) to engage in market trading through coordinated operation. Given that these VPPs belong to diverse stakeholders, a competitive dynamic i...

  • Article
  • Open Access
1 Citations
1,603 Views
24 Pages

Explainable Advanced Modelling of CO2-Dissolved Brine Density: Applications for Geological CO2 Storage in Aquifers

  • Amin Shokrollahi,
  • Afshin Tatar,
  • Sepideh Atrbarmohammadi and
  • Abbas Zeinijahromi

The growing impacts of global warming demand urgent climate-change mitigation strategies, with carbon storage in saline aquifers emerging as a promising solution. These aquifers, for their high porosity and permeability, offer significant potential f...

  • Article
  • Open Access
9 Citations
10,292 Views
31 Pages

A Self-Adaptive Traffic Signal System Integrating Real-Time Vehicle Detection and License Plate Recognition for Enhanced Traffic Management

  • Manar Ashkanani,
  • Alanoud AlAjmi,
  • Aeshah Alhayyan,
  • Zahraa Esmael,
  • Mariam AlBedaiwi and
  • Muhammad Nadeem

Traffic management systems play a crucial role in smart cities, especially because increasing urban populations lead to higher traffic volumes on roads. This results in increased congestion at intersections, causing delays and traffic violations. Thi...

  • Article
  • Open Access
1 Citations
1,514 Views
19 Pages

Siting and Sizing Method of GFM Converters Based on Genetic Algorithm

  • Wentao Sun,
  • Yi Ge,
  • Guojing Liu,
  • Hui Cai,
  • Quanquan Wang,
  • Xingning Han and
  • Wanchun Qi

The rising integration of renewable energy sources has resulted in a diminished capacity for voltage support within the system, which is characterized by low inertia and a reduced short circuit ratio (SCR). In order to improve grid strength and enhan...

  • Article
  • Open Access
25 Citations
2,336 Views
13 Pages

Compatibility Analysis Between RedCap Non-Public Networks and 5G NR in TDD FR1 and FR2 Bands

  • Valery Tikhvinskiy,
  • Alexander Pastukh,
  • Svetlana Dymkova and
  • Oleg Varlamov

RedCap technology is set to become a critical component in the growth of the Internet of Things (IoT), enabling sensors and wearable devices for medical, industrial, and commercial applications. However, because RedCap primarily operates in non-publi...

  • Article
  • Open Access
1 Citations
1,360 Views
14 Pages

Robust Control of Irrigation Systems Using Predictive Methods and Disturbance Rejection

  • Jose Carreño-Zagarra,
  • Diana Poveda-Rodriguez and
  • Marco Flórez

Ensuring that the world’s population meets its food needs, despite water restrictions, can be significantly improved by increasing irrigation efficiency and productivity. Achieving this goal necessitates technological advancements in control sy...

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Inventions - ISSN 2411-5134