"Sound technology stubs" typically refer to short articles or entries related to sound technology that are part of a larger database, such as Wikipedia. In these platforms, a "stub" is a term used to describe a page that is considered incomplete or lacking in detail. This means that the entry provides only basic information and invites contributors to expand on it by adding more content, references, and details.

Dawn Bonfield is a notable material scientist and engineer known for her work in the fields of engineering, materials science, and her advocacy for diversity in STEM (Science, Technology, Engineering, and Mathematics) fields. She has been involved in promoting the importance of science and engineering education, especially for women and underrepresented groups. Bonfield has contributed to various initiatives aimed at increasing participation in STEM and has received recognition for her efforts to inspire the next generation of engineers and scientists.

The acoustic approximation is a concept used in various fields of physics and engineering, particularly in the study of wave phenomena, such as sound waves. This approximation allows for the simplification of equations governing wave propagation under certain conditions. In the context of fluid dynamics and acoustics, the acoustic approximation typically assumes that: 1. **Linearization**: The equations governing the fluid dynamics or wave propagation are linearized, meaning that the nonlinear effects are neglected.

Acoustic dispersion refers to the phenomenon where different frequencies of a sound wave travel at different speeds when propagating through a medium. This results in the spreading out of the sound wave over time, as each frequency component arrives at a different moment. In many materials, the speed of sound is frequency-dependent, meaning that high frequencies may travel faster or slower than low frequencies based on the properties of the medium, such as its density, elasticity, and temperature.

Refraction of sound refers to the change in direction of sound waves as they pass from one medium to another or as they travel through different layers of a medium with varying properties, such as temperature or density. This phenomenon occurs because sound waves travel at different speeds in different materials or under different conditions. Here are some key points about sound refraction: 1. **Sound Speed Variability**: The speed of sound varies with factors like temperature, humidity, and pressure.

The Journal of Sound and Vibration is a peer-reviewed academic journal that focuses on the study of sound and vibration in various contexts. It publishes original research articles, reviews, and technical notes related to the fields of acoustics, vibration analysis, noise control, and related disciplines. Topics covered in the journal may include fundamental research on sound propagation and vibration phenomena, applications in engineering, environmental noise assessments, and methods for sound and vibration measurement and control.

"Ultrasonics" is a scientific journal that publishes research articles, reviews, and technical notes related to the field of ultrasonics, which involves the use of high-frequency sound waves (above the upper limit of human hearing, typically above 20 kHz) in various applications. This can include areas such as medical imaging, non-destructive testing, industrial cleaning, ultrasonic welding, and other areas where ultrasonic technology is applied.

Self-focusing transducers are a type of acoustic transducer designed to focus sound waves onto a particular point or region without the need for external optical or mechanical systems to direct the beam. This technology leverages the unique properties of certain materials and geometries that cause sound waves to converge or focus at specific points due to nonlinear interactions within the medium.

The Actuarial Society of South Africa (ASSA) has developed various models to project the impact of HIV/AIDS on the population, particularly focusing on its effects on mortality, morbidity, and demographic trends. These models are crucial for understanding how the HIV/AIDS epidemic influences life expectancy, disease burden, and the financial implications for insurance and healthcare systems in South Africa.

Insurance underwriters are professionals who evaluate and assess the risk of insuring individuals and businesses. Their primary role is to determine whether to accept or reject insurance applications based on the risk associated with the applicant. Underwriters analyze various factors, including personal information, financial stability, health records, property details, and the nature of the insurance coverage requested. Key functions of insurance underwriters include: 1. **Risk Assessment:** They evaluate potential risks based on data and guidelines provided by the insurance company.

The Annual Growth Rate (AGR) is a measure used to indicate the average rate of growth of an investment, an economy, a population, or any variable over a specified period, typically expressed as a percentage. It helps investors, analysts, and decision-makers to assess the performance and potential of an entity or investment over time. **Key points about Annual Growth Rate:** 1.

Actuarial reserves are funds that insurance companies set aside to pay future claims and obligations. These reserves are calculated based on actuarial methods, which analyze statistical data, such as mortality rates, morbidity rates, and policyholder behavior, to estimate the future liabilities that the insurer will face.

The term "Increased Limit Factor" (ILF) may refer to different concepts depending on the context in which it is used. In general, it is most commonly associated with insurance and risk management industries, particularly in relation to policy limits and coverage. 1. **Insurance Context**: In the context of insurance, the Increased Limit Factor is used to calculate additional premiums for policyholders who wish to raise their coverage limits beyond the standard amount offered by an insurance policy.

Computational finance is an interdisciplinary field that applies computational techniques and algorithms to solve problems and model systems in finance. It combines elements of finance, mathematics, statistics, computer science, and economics to develop quantitative models and tools used for financial analysis, risk management, derivative pricing, portfolio optimization, and other financial applications. Key areas of computational finance include: 1. **Quantitative Modeling**: Creating mathematical models to represent financial phenomena. This may involve stochastic calculus, differential equations, and statistical methods.

An Enrolled Actuary (EA) is a professional who has been authorized by the Joint Board for the Enrollment of Actuaries to perform actuarial services for pension plans in the United States. The designation is specifically relevant in the context of federal pension law, primarily under the Employee Retirement Income Security Act of 1974 (ERISA) and subsequent legislation.