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Topic Review
Digital Village Technology Architecture System
A digital village is the process of using information technology and digital technology to make targeted transformations, based on the needs and characteristics of the village, and ultimately to achieve a change in the development model of the village. The digital village technology architecture system constructed herein is divided into four levels: infrastructure system, village brain, application support system and application service system. 
  • 2.8K
  • 23 Nov 2022
Topic Review
ODB (C++)
ODB is an object-relational mapping (ORM) system for the C++ language. It allows an application developer to persist C++ objects to a relational database without having to deal with tables, columns, or SQL and without manually writing any mapping code. ODB supports C++98/03 and C++11 language standards and comes with optional profiles for Boost and Qt which allow an application developer to seamlessly use value types (data-time, string, binary, uuid, etc.), containers, and smart pointers from these libraries in persistent C++ classes. ODB is free software and is dual-licensed under the GPL and a proprietary license. One notable difference between ODB and other ORM implementations for C++ is its automatic generation of the database mapping code and, optionally, the database schema from the C++ headers that declare the classes. This task is performed by the ODB compiler. The ODB compiler is a real C++ compiler except that instead of producing assembly or machine code, it generates portable C++ which can in turn be compiled by any C++ compiler. The ODB compiler uses the GCC compiler front-end for C++ parsing and is implemented using the new GCC plugin architecture. The ODB compiler also provides comprehensive support for database schema evolution, including fully automatic schema migration, support for immediate and gradual data migration, as well as support for soft model changes. The latter feature allows one to work with multiple schema versions using the same C++ classes. The other components of the ODB system include the common runtime library (libodb) and the database-specific runtime libraries (for example, libodb-mysql). The common runtime library defines object-oriented database interfaces that are used by the application developer to perform various database operations on persistent objects. The database-specific runtimes implement these interfaces for concrete database systems and provide support functionality for the generated database mapping code. To achieve high performance, low overhead, and reliability ODB does not use common database APIs, such as ODBC, to access the relational database. Rather, each database-specific runtime library uses low-level, native C APIs that are specific to each database. ODB currently supports the MySQL, SQLite, PostgreSQL, Oracle, and SQL Server databases. Bulk/batch operations are supported for Oracle and SQL Server. The application can also use multiple databases (for example, MySQL, SQLite, etc.) at the same time. Multi-database support comes in the static and dynamic flavors with the latter allowing the application to dynamically load the database support code for individual database if and when necessary. ODB is not a framework. There is no common base type that all persistent classes should derive from nor are there any restrictions on the data member types in persistent classes. Existing classes can be made persistent with a few or no modifications. ODB is also flexible in the level of insulation it provides to the application developer. It can either completely hide the relational nature of the underlying database or expose some of the details as required.
  • 2.8K
  • 28 Nov 2022
Topic Review
Waka (Canoe)
Waka (Māori: [ˈwaka]) are Māori watercraft, usually canoes ranging in size from small, unornamented canoes (waka tīwai) used for fishing and river travel to large, decorated war canoes (waka taua) up to 40 metres (130 ft) long. The earliest remains of a canoe in New Zealand were found near the Anaweka estuary in a remote part of the Tasman District and radiocarbon-dated to about 1400. The canoe was constructed in New Zealand, but was a sophisticated canoe, compatible with the style of other Polynesian voyaging canoes at that time. Since the 1970s about eight large double-hulled canoes of about 20 metres have been constructed for oceanic voyaging to other parts of the Pacific. They are made of a blend of modern and traditional materials, incorporating features from ancient Melanesia, as well as Polynesia.
  • 2.8K
  • 13 Oct 2022
Topic Review
Asphaltene
Asphaltenes is the heaviest and most polar fraction of petroleum not yet wery well characterized and only presently define by they solubility.
  • 2.8K
  • 29 Aug 2021
Topic Review
Vulnerabilities and Challenges in IoT-Enabled Smart Grids
Internet of Things (IoT) has appeared as one of the enabling technologies for smart energy grids by delivering abundant cutting-edge solutions in various domains, including critical infrastructures. As IoT-enabled devices continue to flourish, one of the major challenges is security issues, since IoT devices are connected through the Internet, thus making the smart grids vulnerable to a diverse range of cyberattacks. 
  • 2.8K
  • 25 Oct 2022
Topic Review
PSO-1
The PSO-1 (Прицел Снайперский Оптический, Pritsel Snaipersky Optichesky, "Optical Sniper Sight") is a telescopic sight manufactured in Russia by the Novosibirsk instrument-making factory (NPZ Optics State Plant) and issued with the Russian military Dragunov sniper rifle. The PSO-1 was, at the time of its introduction on 3 July 1963 together with the Dragunov sniper rifle, the most technically advanced telescopic sight ever designed for a mass-production designated marksman or sniper rifle.
  • 2.8K
  • 31 Oct 2022
Topic Review
Vertical Axis Wind Turbine
A vertical-axis wind turbines (VAWT) is a type of wind turbine where the main rotor shaft is set transverse to the wind (but not necessarily vertically) while the main components are located at the base of the turbine. This arrangement allows the generator and gearbox to be located close to the ground, facilitating service and repair. VAWTs do not need to be pointed into the wind, which removes the need for wind-sensing and orientation mechanisms. Major drawbacks for the early designs (Savonius, Darrieus and giromill) included the significant torque variation or "ripple" during each revolution, and the large bending moments on the blades. Later designs addressed the torque ripple issue by sweeping the blades helically (Gorlov type). A vertical axis wind turbine has its axis perpendicular to the wind streamlines and vertical to the ground. A more general term that includes this option is "transverse axis wind turbine" or "cross-flow wind turbine." For example, the original Darrieus patent, US Patent 1835018, includes both options. Drag-type VAWTs such as the Savonius rotor typically operate at lower tipspeed ratios than lift-based VAWTs such as Darrieus rotors and cycloturbines.
  • 2.8K
  • 20 Oct 2022
Topic Review
Morley's Trisector Theorem
In plane geometry, Morley's trisector theorem states that in any triangle, the three points of intersection of the adjacent angle trisectors form an equilateral triangle, called the first Morley triangle or simply the Morley triangle. The theorem was discovered in 1899 by Anglo-American mathematician Frank Morley. It has various generalizations; in particular, if all of the trisectors are intersected, one obtains four other equilateral triangles.
  • 2.8K
  • 17 Nov 2022
Topic Review
Integrated Microfluidic-Based Platforms
Integrated microfluidic platforms (IMPs) refer to diagnostic or analytic platforms that utilize, in part, a microfluidic-based system to facilitate the combination of several different steps of medical diagnoses toward full or partial automation. The integration of microfluidics in novel diagnostic technologies takes advantage of micrometric-scale fluids behaving very differently than fluids at volumes seen in our everyday lives. The two main types of currently existing microfluidic systems are continuous-flow and droplet-based systems that can both be further classified based on their respective materials and detection methods.
  • 2.8K
  • 24 Sep 2021
Topic Review
Mycorrhizal Symbiosis of Ericaceous Plants
Ericaceae are a group of plants with biotechnological and commercial importance. These plants establish symbiotic associations with a wide group of mycorrhizal fungi. National and global studies have focused on two of them: arbuscular endomycorrhizae and ectomycorrhizae. The classification of mycorrhizae by type of infection described so far in Ericaceae includes ectomycorrhizae, ectendomycorrhizae, and endomycorrhizae. Ectendomycorrhizas can be of arbutoid, monotropoid, and cavendishioid types; endomycorrhizas are of ericoid and arbuscular types. Of these clades, ectomycorrhizas and ectendomycorrhizas (arbutoid, monotropoid, and cavendishioid) form a multilayer mantle of hyphae around the root; while ericoid, unlike the previous ones, develop their intra- and intercellular structures.
  • 2.8K
  • 30 Sep 2022
Topic Review
Al-Shifa Pharmaceutical Factory
The Al-Shifa (الشفاء, Arabic for "healing") pharmaceutical factory in Khartoum North, Sudan, was constructed between 1992 and 1996 with components imported from Germany , India , Italy, Sweden, Switzerland , Thailand and the United States . It was opened on 12 July 1997 and bombed by the United States on 20 August 1998. The industrial complex was composed of four buildings. It was the largest pharmaceutical factory in Khartoum and employed over 300 workers, producing medicine both for human and veterinary use. The factory was destroyed in 1998 by a missile attack launched by the United States government, killing one employee and wounding eleven. The U.S. government claimed that the factory was used for the processing of VX nerve agent and that the owners of the plant had ties to the terrorist group al-Qaeda. These justifications for the bombing were disputed by the owners of the plant, the Sudanese government, and other governments. American officials later acknowledged "that the evidence that prompted President Clinton to order the missile strike on the Shifa plant was not as solid as first portrayed. Indeed, officials later said that there was no proof that the plant had been manufacturing or storing nerve gas, as initially suspected by the Americans, or had been linked to Osama bin Laden, who was a resident of Khartoum in the 1980s." The attack took place a week after the Monica Lewinsky scandal and two months after release of the film Wag the Dog, prompting some commentators to describe the attack as a distraction for the public from the scandal.
  • 2.8K
  • 14 Oct 2022
Topic Review
Benzodiazepine Dependence
Benzodiazepine dependence defines a situation in which one has developed one or more of either tolerance, withdrawal symptoms, drug seeking behaviors, such as continued use despite harmful effects, and maladaptive pattern of substance use, according to the DSM-IV. In the case of benzodiazepine dependence, however, the continued use seems to be associated with the avoidance of unpleasant withdrawal reaction rather than from the pleasurable effects of the drug. Benzodiazepine dependence develops with long-term use, even at low therapeutic doses, without the described dependence behavior. Addiction consists of people misusing or craving the drug not to relieve withdrawal symptoms, but to experience its euphoric or intoxicating effects. It is necessary to distinguish between addiction to and abuse of benzodiazepines and physical dependence on them. The increased GABA inhibition on the neural systems caused by benzodiazepines is counteracted by the body's development of tolerance to the drug's effects; the development of tolerance occurs as a result of neuroadaptations, which result in decreased GABA activity and increased excitability of the glutamate system; these adaptations occur as a result of the body trying to overcome the central nervous system depressant effects of the drug to restore homeostasis. When benzodiazepines are stopped, these neuroadaptations are "unmasked" leading to hyper-excitability of the nervous system and the appearance of withdrawal symptoms. Therapeutic dose dependence is the largest category of people dependent on benzodiazepines. These individuals typically do not escalate their doses to high levels and generally use their medication as intended by their prescriber. Smaller groups include patients escalating their dosage to higher levels and drug misusers as well. Tolerance develops within days or weeks to the anticonvulsant, hypnotic, muscle relaxant and after 4 months there is little evidence that benzodiazepines retain their anxiolytic properties. Some authors, however, disagree and feel that benzodiazepines retain their anxiolytic properties. Long-term benzodiazepine treatment may remain necessary in certain clinical conditions. Numbers of benzodiazepine prescriptions have been declining, due primarily to concerns of dependence. In the short term, benzodiazepines can be effective drugs for acute anxiety or insomnia. With longer-term use, other therapies, both pharmacological and psychotherapeutic, become more effective. This is in part due to the greater effectiveness over time of other forms of therapy, and also due to the eventual development of pharmacological benzodiazepine tolerance.
  • 2.8K
  • 18 Nov 2022
Topic Review
Fermented Soybean-Derived Cheonggukjang Physiological Activities
Cheonggukjang (CGJ, fermented soybean paste), a traditional Korean fermented dish, has recently emerged as a functional food that improves blood circulation and intestinal regulation. Considering that excessive consumption of refined salt is associated with increased incidence of gastric cancer, high blood pressure, and stroke in Koreans, consuming CGJ may be desirable, as it can be made without salt, unlike other pastes. Soybeans in CGJ are fermented by Bacillus strains (B. subtilis or B. licheniformis), Lactobacillus spp., Leuconostoc spp., and Enterococcus faecium, which weaken the activity of putrefactive bacteria in the intestines, act as antibacterial agents against pathogens, and facilitate the excretion of harmful substances. 
  • 2.8K
  • 03 Jun 2021
Topic Review
Proteins/Enzymes from Animal Sources
Animal proteins are good sources of protein for human, due to the composition of necessary amino acids. The quality of food depends significantly on the properties of protein inside, especially the gelation, transportation, and antimicrobial properties. Interestingly, various kinds of molecules co-exist with proteins in foodstuff, and the interactions between these can significantly affect the food quality.
  • 2.8K
  • 29 Sep 2021
Topic Review
Caduceus as a Symbol of Medicine
The caduceus is the traditional symbol of Hermes and features two snakes winding around an often winged staff. It is often used as a symbol of medicine, especially in the United States, despite its ancient and consistent associations with trade, liars, thieves, eloquence, negotiation, alchemy, and wisdom. The modern use of the caduceus as a symbol of medicine became established in the United States in the late 19th and early 20th century as a result of well-documented mistakes, misunderstandings of symbology and classical culture. The correct symbol for medicine is the Rod of Asclepius, which has only one snake and no wings.
  • 2.8K
  • 02 Nov 2022
Topic Review
Communication-based Train Control(CBTC) System
Nowadays, the communication-based train control(CBTC) system is commonly used in the urban rail transit system all over the world, and the CBTC systems currently operating worldwide are the "Products" of advances in Internet of Things and Artificial Intelligence. 
  • 2.8K
  • 04 Apr 2022
Topic Review
Nuda
Nuda is a class of ctenophores or comb jellies. The class contains a single family, Beroidae, with two genera, Beroe and Neis, and the group is more commonly referred to as the "beroids". They are distinguished from other comb jellies by the complete absence of tentacles, in both juvenile and adult stages. Beroe is found in all the world's oceans and seas, and the monotypic Neis occurs only near Australia; all beroids are free-swimmers that form part of the plankton.
  • 2.8K
  • 19 Oct 2022
Topic Review
Cantonal Rebellion
Script error: No such module "Infobox military conflict". The Cantonal rebellion was a cantonalist insurrection that took place during the First Spanish Republic between July 1873 and January 1874. Its protagonists were the "intransigent" federal Republicans, who wanted to establish immediately the Federal Republic from the bottom-up without waiting for the Constituent Cortes to draft and approve the new Federal Constitution, as defended by the president of the Executive Power of the Republic Francisco Pi y Margall, a Proudhonian Mutualist supported by the "centrist" and "moderate" sectors of the Federal Democratic Republican Party. Pi y Margall was the principal translator of Proudhon's works, according to George Woodcock "These translations were to have a profound and lasting effect on the development of Spanish anarchism after 1870, but before that time Proudhonian ideas, as interpreted by Pi, already provided much of the inspiration for the federalist movement which sprang up in the early 1860s." According to the Encyclopædia Britannica "During the Spanish revolution of 1873, Pi y Margall attempted to establish a decentralized, or “cantonalist,” political system on Proudhonian lines." The rebellion began on July 12, 1873 in Cartagena - although three days earlier the Alcoy Petroleum Revolution had broken out at the initiative of the Spanish section of the International Workers Association (AIT) - spreading in the following days through the regions of Valencia, Murcia and Andalusia. In these areas, cantons were formed, whose federation would constitute the base of the Spanish Federal Republic. The political theory on which the cantonal movement was based was the "pactist" federalism of Francisco Pi y Margall against whose government the "intransigent" federal republicans (paradoxically) rose up against. When the policy of the Pi y Margall government failed to combine persuasion with repression to end the insurrection, the government that replaced him chaired by the "moderate" Nicolás Salmerón did not hesitate to employ the army led by generals Arsenio Martínez Campos and Manuel Pavia to crush the rebellion, a policy that accentuated the next government of the also "moderate" Emilio Castelar, who, after suspending the sessions of the Cortes, began the siege of Cartagena, the last stronghold of the rebellion. Cartagena would not fall into the hands government until January 12, a week after the coup of Pavia that ended the federal Republic giving way to the dictatorship of Serrano. Although the cantonal rebellion was considered a "separatist" movement by the Government of the Republic, the current historiography highlights that the rebellion only sought to reform the structure of the state, without ever wanting to break the unity of Spain.
  • 2.8K
  • 24 Oct 2022
Topic Review
Marine Safety in Relation to Human Errors
As in any industry exposed to risk, human and organizational factors are the main stakes of maritime safety. Understanding the causes and risks of maritime accidents is integral to the sustainability of shipping. The investigation of marine accidents is a crucial tool for their identification in areas related to operations and ships.
  • 2.8K
  • 16 Jun 2023
Topic Review Peer Reviewed
Anthropology of Food: History, Topics, and Trajectories to Understand a Discipline
The anthropology of food is a sub-field of cultural anthropology interested in studying food and foodways. This article provides a concise overview of the anthropology of food, tracing its development from the early twentieth century to contemporary debates and emerging research trajectories. Drawing on foundational work by figures such as Boas and Malinowski, it shows how early anthropologists approached food as integral to understanding social organization, kinship, and cultural meaning. As the field evolved, structuralist, materialist, feminist, and political-economic perspectives broadened its scope, highlighting the symbolic significance of cuisine, the interplay between environment and subsistence, and the pivotal role of gender and class in shaping food practices. In recent decades, the anthropology of food has engaged intensively with globalization, investigating how transnational flows reshape culinary identities, local economies, and cultural heritage, as well as other significant topics. At the same time, emerging themes—such as multispecies perspectives, sensory studies, and the application of innovative methodologies—offer new lenses for understanding how food mediates relationships between humans, non-human beings, and environments. By examining case studies spanning regions from Africa and Asia to Europe and the Americas, this article illustrates how contemporary anthropologists use food as a prism to investigate cultural identity, social change, ethical relations, and the complex entanglements of local and global food systems.
  • 2.8K
  • 13 Feb 2025
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