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Topic Review
Sound Transmission Losses in DPS
Double panel structures (DPS) are flat or curved structural designs which consist of two opposite facesheets or panels separated by a core or cavity. The cavity may be any kind of enclosed gasses while the core may be any form of solid materials which can be architecturally designed. DPS have been used in various applications for sound insulation purpose.  First, sound incident on the incident facesheet of the DPS, transmitted through the core or cavity and then radiates from the radiating facesheet of the DPS. The ratio of the sound power incident on the incident facesheet to the sound power transmitted through the radiating facesheet is referred as the sound transmission loss of the DPS. The motivation behind the wide industrial application of DPS is owing to their potential characteristics to absorb sound more effectively. Therefore, it is of utmost importance to understand the different geometry and material constituents of the facesheets as well as core/cavity of the DPS. The knowledge of this will help designers and manufacturers to produce the most effective and optimal design of DPS capable of producing very high and desirable sound transmission losses.
  • 3.6K
  • 19 Aug 2020
Topic Review
List of AMD Athlon Microprocessors
Athlon is the name of a family of CPUs designed by AMD, targeted mostly at the desktop market. It has been largely unused as just "Athlon" since 2001 when AMD started naming its processors Athlon XP, but in 2008 began referring to single core 64-bit processors from the AMD Athlon X2 and AMD Phenom product lines. Later the name began being used for some APUs.
  • 3.6K
  • 26 Oct 2022
Topic Review
Spin-½
In quantum mechanics, spin is an intrinsic property of all elementary particles. All known fermions, the particles that constitute ordinary matter, have a spin of 1/2. The spin number describes how many symmetrical facets a particle has in one full rotation; a spin of 1/2 means that the particle must be rotated by two full turns (through 720°) before it has the same configuration as when it started. Particles having net spin 1/2 include the proton, neutron, electron, neutrino, and quarks. The dynamics of spin-1/2 objects cannot be accurately described using classical physics; they are among the simplest systems which require quantum mechanics to describe them. As such, the study of the behavior of spin-1/2 systems forms a central part of quantum mechanics.
  • 3.6K
  • 09 Nov 2022
Topic Review
Attention Mechanism for Remote Sensing
Machine learning, particularly deep learning (DL), has become a central and state-of-the-art method for several computer vision applications and remote sensing (RS) image processing. Researchers are continually trying to improve the performance of the DL methods by developing new architectural designs of the networks and/or developing new techniques, such as attention mechanisms. Since the attention mechanism has been proposed, regardless of its type, it has been increasingly used for diverse RS applications to improve the performances of the existing DL methods.
  • 3.6K
  • 24 Nov 2021
Biography
William Thomson, Baron Kelvin
William Thomson, Baron Kelvin, OM, GCVO, PC, PRS, FRSE (26 June 1824 – 17 December 1907) was a British[1] mathematical physicist and engineer who was born in Belfast in 1824. At the University of Glasgow he did important work in the mathematical analysis of electricity and formulation of the first and second laws of thermodynamics, and did much to unify the emerging discipline of physics in it
  • 3.6K
  • 01 Dec 2022
Topic Review
Global Trends in Halal Food Standards
The demand for ethical foods is rising, with halal foods playing a significant role in this trend. However, halal standards vary globally, which can have substantial implications. Multiple Halal Certification Bodies (HCBs) can approve food products but they often prioritize national regulations over international alignment.
  • 3.6K
  • 29 Nov 2023
Topic Review
Whey Proteins and Its Derivatives
Milk whey proteins are one of the most valued constituents due to their nutritional and techno-functional attributes. Whey proteins are rich in bioactive peptides, possessing bioactive properties such as being antioxidant and antihypertensive as well as having antimicrobial activities, which, when ingested, confers several health benefits. These peptides have the potential to be used as an active food ingredient in the production of functional foods. In addition to their bioactivities, whey proteins are known to possess enhanced functional attributes that allow them to be utilized in broad applications, such as an encapsulating agent or carrier materials to entrap bioactive compounds, emulsification, and in edible and active packaging.
  • 3.6K
  • 11 Dec 2020
Topic Review Peer Reviewed
COVID-19 and Fake News
COVID-19 can be defined as a global pandemic caused by a coronavirus that first surfaced in 2019. Fake news refers to false reports that can be found in digital media. The combination of these two concepts creates an especially mismanaged situation that can result in widespread unease among the population, to whom the news appears continuously and without quality filters.
  • 3.6K
  • 13 Apr 2022
Topic Review
Closing Milestones of the NASDAQ Composite
This article is a summary of the closing milestones of the Nasdaq Composite, a United States stock market index. Since first opening at 100.00 on February 5, 1971, the Nasdaq Composite has increased, despite several periods of decline, most recently after the financial crisis.
  • 3.6K
  • 02 Nov 2022
Topic Review
Traditional Balsamic Vinegar Processing
The most known and traditional vinegar is the one that is made from wine. For its production, the grape must undergo alcohol fermentation and the posterior oxidation of ethanol to acetic acid. Yeasts and acetic acid bacteria (AAB) carry out the biochemical processes in sequence. The process of wine acetification can be achieved by slow traditional processes (the Orléans or French methods) or by a quick submerged industrial process. High-quality vinegar is usually produced by traditional methods using oak casks, once the wood allows the continuous aeration of the acetic bacteria culture. Sour–sweet vinegar presents a balance of both bitter/sour and sweet flavors. The sourness typically comes from acetic acid, while the sweetness can come from the type of fruit or the amount of sugar present at the end of vinegar production. In general, sour-sweet vinegar has a more complex and nuanced flavor profile compared to regular vinegar, which is often simply sour. One kind of vinegar produced by wine acetification where yeasts and bacteria co-exist and produce savory vinegar is traditional balsamic vinegar (TBV).
  • 3.6K
  • 05 Jul 2023
Topic Review
Digitalization of the Restaurant Industry
The COVID-19 pandemic had a severe impact on the restaurant industry. Temporary shutdowns and seating capacity restrictions led to a sharp drop in sales. In this scenario, digitalization emerged as a crucial strategy for business survival, offering opportunities to increase restaurants’ competitiveness and revenues. 
  • 3.6K
  • 30 Nov 2023
Topic Review
Epidemiology of Tuberculosis
Tuberculosis (TB) is an infectious disease usually caused by Mycobacterium tuberculosis (MTB) bacteria. Tuberculosis generally affects the lungs, but can also affect other parts of the body. Most infections show no symptoms, in which case it is known as latent tuberculosis. About 10% of latent infections progress to active disease which, if left untreated, kills about half of those affected. Typical symptoms of active TB are a chronic cough with blood-containing mucus, fever, night sweats, and weight loss. It was historically called consumption due to the weight loss. Infection of other organs can cause a wide range of symptoms. Tuberculosis is spread from one person to the next through the air when people who have active TB in their lungs cough, spit, speak, or sneeze. People with latent TB do not spread the disease. Active infection occurs more often in people with HIV/AIDS and in those who smoke. Diagnosis of active TB is based on chest X-rays, as well as microscopic examination and culture of body fluids. Diagnosis of latent TB relies on the tuberculin skin test (TST) or blood tests. Prevention of TB involves screening those at high risk, early detection and treatment of cases, and vaccination with the bacillus Calmette-Guérin (BCG) vaccine. Those at high risk include household, workplace, and social contacts of people with active TB. Treatment requires the use of multiple antibiotics over a long period of time. Antibiotic resistance is a growing problem with increasing rates of multiple drug-resistant tuberculosis (MDR-TB). As of 2018, one quarter of the world's population was thought to have latent infection with TB. New infections occur in about 1% of the population each year. In 2018, there were more than 10 million cases of active TB, resulting in 1.5 million deaths and making it the number one cause of death from an infectious disease at that time. As of 2018, most TB cases occurred in the regions of South-East Asia (44%), Africa (24%) and the Western Pacific (18%), with more than 50% of cases being diagnosed in eight countries: India (27%), China (9%), Indonesia (8%), the Philippines (6%), Pakistan (6%), Nigeria (4%) and Bangladesh (4%). The number of new cases each year has decreased since 2000. About 80% of people in many Asian and African countries test positive while 5–10% of people in the United States population test positive by the tuberculin test. Tuberculosis has been present in humans since ancient times. 
  • 3.6K
  • 09 Oct 2022
Topic Review
Maya
Maya (/ˈmɑːjə/; Devanagari: माया, IAST: māyā), literally "illusion" or "magic", has multiple meanings in Indian philosophies depending on the context. In later Vedic texts, māyā connotes a "magic show, an illusion where things appear to be present but are not what they seem"; the principle which shows "attributeless Absolute" as having "attributes". Māyā also connotes that which "is constantly changing and thus is spiritually unreal" (in opposition to an unchanging Absolute, or Brahman), and therefore "conceals the true character of spiritual reality". In the Advaita Vedanta school of Hindu philosophy, māyā, "appearance", is "the powerful force that creates the cosmic illusion that the phenomenal world is real." In this nondualist school, māyā at the individual level appears as the lack of knowledge (avidyā) of the real Self, Atman-Brahman, mistakingly identifying with the body-mind complex and its entanglements. In Hinduism, māyā is also an epithet for goddess Lakshmi, and the name of a manifestation of Lakshmi, the goddess of "wealth, prosperity and love". In Buddhist philosophy, Māyā is invoked as one of twenty subsidiary unwholesome mental factors, responsible for deceit or concealment about the nature of things. Maya is also the name of Gautama Buddha's mother.
  • 3.6K
  • 27 Oct 2022
Topic Review
Inclusion and Students with Intellectual Disabilities
Individuals with intellectual disabilities (ID) have the same right to participate in the general education curriculum as their typically developing peers. Inclusion is the belief that all individuals with diverse needs may participate in society.  In schools, inclusion implies acceptance of differences and access to the the general education curriculum and environmnet. Students with more severe cognitive disabilities and daily living skill needs called intellectual disabilities (ID) can be successful in the inclusive classroom with appropriate supports and services.  For individuals with ID in general education classrooms, inclusion in the general education setting is critical to their long-term participation in the community, improved academic and behavioral performance, and has been associated with positive health and well-being.
  • 3.6K
  • 20 Jun 2023
Topic Review
Data Visualization
Data visualization (often abbreviated data viz) is an interdisciplinary field that deals with the graphic representation of data. It is a particularly efficient way of communicating when the data is numerous as for example a time series. From an academic point of view, this representation can be considered as a mapping between the original data (usually numerical) and graphic elements (for example, lines or points in a chart). The mapping determines how the attributes of these elements vary according to the data. In this light, a bar chart is a mapping of the length of a bar to a magnitude of a variable. Since the graphic design of the mapping can adversely affect the readability of a chart, mapping is a core competency of Data visualization. Data visualization has its roots in the field of statistics and is therefore generally considered a branch of descriptive Statistics. However, because both design skills and statistical and computing skills are required to visualize effectively, it is argued by authors such as Gershon and Page that it is both an art and a science. Research into how people read and misread various types of visualizations is helping to determine what types and features of visualizations are most understandable and effective in conveying information.
  • 3.6K
  • 20 Oct 2022
Topic Review
Opportunity Assessment: Considerations for Entrepreneurs
Defining entrepreneurship can be problematic and maybe sometimes misleading. For example, the assertion that entrepreneurship is concerned with the discovery and exploitation of profitable opportunities does not appear to take account of the notion of risk, which because of uncertainty is always inherent in new market decisions. This is borne out by reality, where evidence indicates that a large percentage of start-ups (often thought to be between 50% and 70%) fail within the first 5 years. This fact, coupled with research suggesting that idea generation, by itself, is not an issue, implies that the key challenge lies in the effective evaluation of those ideas. This means that entrepreneurs must be honest with themselves and objectively assess whether they have identified a viable business opportunity, as distinct from a good idea with limited or no commercial prospects. This is particularly important for technology entrepreneurs as the lead time to market is often long and the risk of failure is high. Central therefore to the resulting opportunity confidence leading to adoption or rejection of an idea is an iterative process of evaluation, which in the first instance is critical in nascent entrepreneurial processes. Three key constructs—opportunity costs, market assessment and financial analysis—are of singular importance in the evaluation process and are discussed in more detail below. 
  • 3.6K
  • 07 Jan 2022
Topic Review
International Humanist and Ethical Union
The International Humanist and Ethical Union (IHEU) is an umbrella organisation of humanist, atheist, rationalist, secular, skeptic, freethought and Ethical Culture organisations worldwide. British philosopher and biologist Julian Huxley (also the first director of UNESCO) presided over the founding Congress of the IHEU in Amsterdam, 1952; Dutch philosopher and politician Jaap van Praag became its first chairman until 1975. The IHEU works "to build and represent the global Humanist movement that defends human rights and promotes Humanist values world-wide." In 2002, the IHEU General Assembly unanimously adopted the Amsterdam Declaration 2002, which presents as the "official defining statement of World Humanism". The Happy Human is the official symbol of the IHEU. IHEU holds a World Humanist Congress usually every three years. The next is to be held in Miami, United States , in 2020.
  • 3.6K
  • 24 Nov 2022
Topic Review
Polyethylene Composites
Polyethylene (PE) is one the most used plastics worldwide for a wide range of applications due to its good mechanical and chemical resistance, low density, cost efficiency, ease of processability, non-reactivity, low toxicity, good electric insulation, and good functionality.
  • 3.6K
  • 10 Feb 2021
Topic Review
List of Minerals N (Complete)
This list includes those recognised minerals beginning with the letter N. The International Mineralogical Association is the international group that recognises new minerals and new mineral names, however minerals discovered before 1959 did not go through the official naming procedure, although some minerals published previously have been either confirmed or discredited since that date. This list contains a mixture of mineral names that have been approved since 1959 and those mineral names believed to still refer to valid mineral species (these are called "grandfathered" species). The list is divided into groups: The data was exported from mindat.org on 29 April 2005; updated up to 'IMA2018'. The minerals are sorted by name, followed by the structural group (rruff.info/ima and ima-cnmnc by mineralienatlas.de, mainly) or chemical class (mindat.org and basics), the year of publication (if it's before of an IMA approval procedure), the IMA approval and the Nickel–Strunz code.
  • 3.6K
  • 10 Oct 2022
Topic Review
Tank Steering Systems
Tank steering systems allow a tank, or other continuous track vehicle, to turn. Because the tracks cannot be angled relative to the hull (in any operational design), steering must be accomplished by speeding one track up, slowing the other down (or reversing it), or a combination of both. Half-track vehicles avoid this by combining steerable wheels and fixed-speed tracks. Early steering systems were adopted from tracked work vehicles, generally using a clutch to reduce power to one track, causing it to slow down. These designs have numerous problems, notably when climbing hills or running at high speed, as the reduction in power causes the overall speed to slow. Delivering power to both tracks while turning them at different speeds is a difficult design problem. A series of more advanced designs were introduced, especially through World War II, that maintained power to both tracks during steering, a concept known as regenerative steering. Some also allowed one track to move forward while the other reversed, allowing the tank to spin in place, a concept known as neutral steering. The first really successful system was the British double differential design of 1924, which was copied by both the United States and Germany. Most modern Western designs use a variation of the double differential, while Soviet designs preferred to use two separate transmissions in a single housing. Systems using electric motors with variable speed controls have been tried on a number of occasions, but have not entered widespread service.
  • 3.6K
  • 25 Oct 2022
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