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Topic Review
Airbus Beluga XL
The Airbus BelugaXL (A330-743L) is a large transport aircraft based on the Airbus A330-200F built by Airbus to replace the original Airbus Beluga in the movement of oversized aircraft components like wings. The aircraft made its first flight on 19 July 2018, and received its type certification on 13 November 2019. The BelugaXL entered service with Airbus Transport on 9 January 2020.
  • 3.9K
  • 27 Oct 2022
Topic Review
Scale Relativity
Scale relativity is a geometrical and fractal space-time physical theory. Relativity theories (special relativity and general relativity) are based on the notion that position, orientation, movement and acceleration cannot be defined in an absolute way, but only relative to a system of reference. The scale relativity theory proposes to extend the concept of relativity to physical scales (time, length, energy, or momentum scales), by introducing an explicit "state of scale" in coordinate systems. This extension of the relativity principle using fractal geometries to study scale transformations was originally introduced by Laurent Nottale, based on the idea of a fractal space-time theory first introduced by Garnet Ord, and by Nottale and Jean Schneider. The construction of the theory is similar to previous relativity theories, with three different levels: Galilean, special and general. The development of a full general scale relativity is not finished yet.
  • 3.9K
  • 14 Oct 2022
Biography
Robert Lawrence Kuhn
Robert Lawrence Kuhn[1] (born 1944) is a public intellectual, international corporate strategist and investment banker. He has a doctorate in neuroscience and is the author and editor of over 25 books. He is a recipient of the China Reform Friendship Medal, China's highest award; he is a long-time adviser to China's leaders and the Chinese government, to multinational corporations on China strat
  • 3.9K
  • 21 Nov 2022
Topic Review
Steady State Model
In cosmology, the steady state model is an alternative to the Big Bang theory of the evolution of our universe. In the steady state model, the density of matter in the expanding universe remains unchanged due to a continuous creation of matter, thus adhering to the perfect cosmological principle, a principle that asserts that the observable universe is basically the same at any time as well as at any place. While the steady state model enjoyed some popularity in the mid-20th century (though less popularity than the Big Bang theory), it is now rejected by the vast majority of cosmologists, astrophysicists and astronomers, as the observational evidence points to a hot Big Bang cosmology with a finite age of the universe, which the steady state model does not predict.
  • 3.9K
  • 14 Oct 2022
Topic Review
Folk Music
Folk music includes traditional folk music and the genre that evolved from it during the 20th-century folk revival. Some types of folk music may be called world music. Traditional folk music has been defined in several ways: as music transmitted orally, music with unknown composers, or music performed by custom over a long period of time. It has been contrasted with commercial and classical styles. The term originated in the 19th century, but folk music extends beyond that. Starting in the mid-20th century, a new form of popular folk music evolved from traditional folk music. This process and period is called the (second) folk revival and reached a zenith in the 1960s. This form of music is sometimes called contemporary folk music or folk revival music to distinguish it from earlier folk forms. Smaller, similar revivals have occurred elsewhere in the world at other times, but the term folk music has typically not been applied to the new music created during those revivals. This type of folk music also includes fusion genres such as folk rock, folk metal, and others. While contemporary folk music is a genre generally distinct from traditional folk music, in U.S. English it shares the same name, and it often shares the same performers and venues as traditional folk music.
  • 3.9K
  • 01 Nov 2022
Topic Review
Heavy Metals and Metalloids
The contamination of soil by heavy metals and metalloids is a worldwide problem due to the accumulation of these compounds in the environment, endangering human health, plants, and animals. Heavy metals and metalloids are normally present in nature, but the rise of industrialization has led to concentrations higher than the admissible ones. They are non-biodegradable and toxic, even at very low concentrations. Several techniques have been developed over the years: - physical remediation (e.g., washing, thermal desorption, solidification), - chemical remediation (e.g., adsorption, catalysis, precipitation/solubilization, electrokinetic methods), - biological remediation (e.g., biodegradation, phytoremediation, bioventing), and combined remediation (e.g., electrokinetic–microbial remediation; washing–microbial degradation).
  • 3.9K
  • 20 May 2021
Topic Review
Driver Drowsiness Detection Systems
Continuous advancements in computing technology and artificial intelligence have led to improvements in driver monitoring systems. Numerous experimental studies have collected real driver drowsiness data and applied various artificial intelligence algorithms and feature combinations with the goal of significantly enhancing the performance of these systems in real-time. 
  • 3.9K
  • 23 Mar 2022
Topic Review
Tropical Monsoon Climate
An area of tropical monsoon climate (occasionally known as a tropical wet climate or a tropical monsoon and trade-wind littoral climate) is a type of climate that corresponds to the Köppen climate classification category "Am". Tropical monsoon climates have monthly mean temperatures above 18 °C (64 °F) in every month of the year and a dry season. :200–1 Tropical monsoon climates is the intermediate climate between the wet Af (or tropical rainforest climate) and the drier Aw (or tropical savanna climate). A tropical monsoon climate, however, has its driest month seeing on average less than 60 mm, but more than [math]\displaystyle{ 100-\left ( \frac{Total\ Annual\ Precipitation\ (mm)}{25} \right ) }[/math]. This latter fact is in direct contrast to a tropical savanna climate, whose driest month sees less than 60 mm of precipitation and also less than [math]\displaystyle{ 100-\left ( \frac{Total\ Annual\ Precipitation\ (mm)}{25} \right ) }[/math] of average monthly precipitation. In essence, a tropical monsoon climate tends to either see more rainfall than a tropical savanna climate or have less pronounced dry seasons. Additionally, a tropical monsoon climate tends to see less variance in temperatures during the course of the year than a tropical savanna climate. This climate has a driest month which nearly always occurs at or soon after the "winter" solstice for that side of the equator.
  • 3.9K
  • 03 Nov 2022
Topic Review
Avoidant Personality Disorder
Avoidant personality disorder (AvPD) is a Cluster C personality disorder in which the main coping mechanism of those affected is avoidance of feared stimuli. Those affected display a pattern of severe social anxiety, social inhibition, feelings of inadequacy and inferiority, extreme sensitivity to negative evaluation and rejection, and avoidance of social interaction despite a strong desire for intimacy. People with AvPD often consider themselves to be socially inept or personally unappealing and avoid social interaction for fear of being ridiculed, humiliated, rejected, or disliked. They often avoid becoming involved with others unless they are certain they will be liked. Childhood emotional neglect (in particular, the rejection of a child by one or both parents) and peer group rejection are associated with an increased risk for its development; however, it is possible for AvPD to occur without any notable history of abuse or neglect.
  • 3.9K
  • 20 Oct 2022
Topic Review
Prevention and Treatment of COVID-19
Since the pandemic induced by the coronavirus SARS-CoV2 began to be spread throughout the whole world, many medical attempts to control the infection and avoid the high rate of mortality and morbidity have been made, collapsing the ICUs of many Hospitals. Many different treatments have been tested, but mortality reached very high values, especially in people in the middle/ elder age. Survivors usually develop important sequelae, even time after the infection had been controlled. In this article, we propose two different approaches to avoid the infection or mitigate their effects. One of them is based in the administration of GH, as preventive,  given its known effect on the production of lymphocytes and a high number of antibodies, as well as for helping in the recovery of the damaged organs. The other one is the administration of melatonin, both to prevent the infection and to act on inflammation once the disease is established. Both hormones are safe and can synergize when the damage to organs is established. GH administration has to be interrupted if the cytokine storm appears because the hormone can increase it. This is a novel approach that will be analyzed in extent, on scientific bases, throughout this article.  
  • 3.9K
  • 05 Nov 2020
Topic Review
Sugarcane Grown with Saline Irrigation
Sugarcane is a glycophyte, which is fairly sensitive to salt stress, and it is known that applications of saline water adversely affect sugarcane yields and qualities.
  • 3.9K
  • 29 Oct 2020
Topic Review
Location-Based Service
A location-based service (LBS) is a general term denoting software services which utilize geographic data and information to provide services or information to users. LBS can be used in a variety of contexts, such as health, indoor object search, entertainment, work, personal life, etc. Commonly used examples of location based services include navigation software, social networking services, location-based advertising, and tracking systems. LBS can also include mobile commerce when taking the form of coupons or advertising directed at customers based on their current location. They include personalized weather services and even location-based games. LBS is critical to many businesses as well as government organizations to drive real insight from data tied to a specific location where activities take place. The spatial patterns that location-related data and services can provide is one of its most powerful and useful aspects where location is a common denominator in all of these activities and can be leveraged to better understand patterns and relationships. Banking, surveillance, online commerce, and many weapon systems are dependent on LBS. Access policies are controlled by location data and/or time-of-day constraints, or a combination thereof. As such, an LBS is an information service and has a number of uses in social networking today as information, in entertainment or security, which is accessible with mobile devices through the mobile network and which uses information on the geographical position of the mobile device. This concept of location based systems is not compliant with the standardized concept of real-time locating systems (RTLS) and related local services, as noted in ISO/IEC 19762-5 and ISO/IEC 24730-1. While networked computing devices generally do very well to inform consumers of days old data, the computing devices themselves can also be tracked, even in real-time. LBS privacy issues arise in that context, and are documented below.
  • 3.9K
  • 25 Oct 2022
Topic Review
The Hum
The Hum is a phenomenon, or collection of phenomena, involving widespread reports of a persistent and invasive low-frequency humming, rumbling, or droning noise not audible to all people. Hums have been widely reported by national media in the UK and the United States. The Hum is sometimes prefixed with the name of a locality where the problem has been particularly publicized: e.g., the "Bristol Hum" or the "Taos Hum". It is unclear whether it is a single phenomenon; different causes have been attributed. In some cases, it may be a manifestation of tinnitus.
  • 3.9K
  • 27 Oct 2022
Topic Review Peer Reviewed
Arbuscular Mycorrhizal Fungi in Agriculture
Arbuscular mycorrhizal (AM) fungi are biotrophic symbionts forming close relationships with an estimated 80% of terrestrial plants suitable as their host. Via an established AM fungal–host relationship, soil-bound nutrients are made available to the host plant through root cortical arbuscules as the site of exchange. At these sites, photosynthetic carbohydrates are provided to the AM fungus—carbohydrates that cannot be produced by the fungus. AM fungal–host symbiosis is very sensitive to soil disturbance, for example, agricultural tillage practices can damage and reduce AM fungal abilities to interact with a host and provide plant growth-promoting properties.
  • 3.9K
  • 13 Apr 2022
Topic Review
Trewartha Climate Classification
The Trewartha climate classification is a climate classification system first published by American geographer Glenn Thomas Trewartha in 1966. It is a modified version of the Köppen-Geiger system, created to answer some of its deficiencies. The Trewartha system attempts to redefine the middle latitudes to be closer to vegetation zoning and genetic climate systems. It was considered a more true or "real world" reflection of the global climate. The changes were seen as most effective on the large landmasses in Asia and North America, where many areas fall into a single group (C) in the Köppen-Geiger system. For example, under the standard Köppen system, Washington (state) and Oregon are classed into the same climate zone (Csb) as Southern California, even though the two regions have strikingly different weather and vegetation. Another example was classifying cities like London in the same climate group (C) as Brisbane or New Orleans, despite great differences in seasonal temperatures and native plant life.
  • 3.9K
  • 29 Nov 2022
Topic Review
Hydrogen Storage Technologies for Railway Engineering
According to the specific requirements of railway engineering, a techno-economic comparison for onboard hydrogen storage technologies is conducted to discuss their feasibility and potentials for hydrogen-powered hybrid trains. Physical storage methods, including compressed hydrogen (CH2), liquid hydrogen (LH2), and cryo-compressed hydrogen (CcH2), and material-based (chemical) storage methods, such as ammonia, liquid organic hydrogen carriages (LOHCs), and metal hydrides, are carefully discussed in terms of their operational conditions, energy capacity, and economic costs.
  • 3.9K
  • 23 Sep 2022
Topic Review
Decentralized Smart IoT
Decentralized smart Internet of Things (IoT) refers to future IoT powered by blockchain-enabled edge intelligence. This new form of IoT is motivated by the recent advancement of distributed ledger technology (DLT), multi-access edge computing (MEC) and artificial intelligence (AI). The idea is to empower all kinds of IoT devices to observe, identify, and understand the world not by the help of humans but by cooperation and consensus among edge devices, in a secure and verifiable manner. Decentralized smart IoT will provide trust and intelligence to satisfy the sophisticated needs of industries and society.
  • 3.9K
  • 26 Apr 2021
Topic Review
Instituto Superior Técnico
Instituto Superior Técnico (IST, also known as TECNICO LISBOA) is a public school of engineering and technology , part of Universidade de Lisboa (University of Lisbon). Founded in 1911, IST is the largest and most prestigious school of engineering in Portugal, having a large degree of scientific and financial autonomy. Its alumni have held prominent positions in both the private and public sectors of Portuguese society, having produced numerous CEOs, government ministers, 2 Prime Ministers of Portugal, and 1 Secretary-General of the United Nations. Some Rankings: Instituto Superior Técnico - World's TOP 50 Eng Univ 2018 Instituto Superior Técnico. World's 8th Best Civil Eng Univ 2017 IST, since its foundation, has been the largest school of engineering, science and technology in Portugal, at undergraduate and postgraduate levels. It has three campi, all located in the Greater Lisbon area (Alameda in Lisbon, Taguspark in Oeiras and Tecnológico e Nuclear Campus in Loures), and consists of ten Departments that are responsible for teaching the undergraduate and postgraduate programmes. Each Department is organised in sections, which group together specific subjects within its scientific area. In addition, the laboratories of the several Departments are an important source of support to the teaching and research activities carried out at IST. IST offers 18 undergraduate programmes attended by more than 6,000 students, covering a wide range of areas of knowledge, including not only all the traditional engineering specializations, but also other modern areas such as Biomedical Engineering, Aerospace and Physics Engineering. Over 4,500 students are enrolled in 33 masters, 31 doctoral and several specialized programmes. IST has produced 1,292 Ph.D. holders. IST is also actively involved in several networks and international programmes to promote student mobility, both at undergraduate and postgraduate levels. Through a large number of agreements with other institutions worldwide, IST participates in more than 20 Dual Master programmes, and joint PhD programmes with MIT, CMU, UT-Austin and EPFL. IST benefits from an IBM supercomputer built in 2007, which is one of the most powerful in Portugal (1.6 TFLOPS as of 2007).
  • 3.9K
  • 30 Nov 2022
Topic Review Peer Reviewed
COVID-19 and Romantic Relationships
Since the beginning of 2020, the COVID-19 pandemic has impacted most people’s activities and relationships. Romantic relationships are a crucial source of fulfillment and emotional safety for many individuals. However, due to the risk of illness and the social distancing norms, human interaction, even inside one’s couple or family, suffered great changes. Some of these changes have the potential of disrupting people’s relational or psychological well-being, but they can also have positive impacts. On the other hand, one of the most negative consequences is the growing number of intimate partner violence (IPV) incidents. Considering all these aspects, therapy would be beneficial for those affected.
  • 3.9K
  • 13 Apr 2022
Topic Review
Monounsaturated Fat
In biochemistry and nutrition, monounsaturated fatty acids (abbreviated MUFAs, or more plainly monounsaturated fats) are fatty acids that have one double bond in the fatty acid chain with all of the remainder carbon atoms being single-bonded. By contrast, polyunsaturated fatty acids (PUFAs) have more than one double bond.
  • 3.9K
  • 30 Oct 2022
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