Summary

HandWiki is the world's largest wiki-style encyclopedia dedicated to science, technology and computing. It allows you to create and edit articles as long as you have external citations and login account. In addition, this is a content management environment that can be used for collaborative editing of original scholarly content, such as books, manuals, monographs and tutorials.

Expand All
Entries
Topic Review
Secure Digital
Secure Digital (SD) is a non-volatile memory card format developed by the SD Card Association (SDA) for use in portable devices. The standard was introduced in August 1999 by joint efforts between SanDisk, Panasonic (Matsushita Electric) and Toshiba as an improvement over MultiMediaCards (MMC), and has become the industry standard. The three companies formed SD-3C, LLC, a company that licenses and enforces intellectual property rights associated with SD memory cards and SD host and ancillary products. The companies also formed the SD Association (SDA), a non-profit organization, in January 2000 to promote and create SD Card standards. SDA today has about 1,000 member companies. The SDA uses several trademarked logos owned and licensed by SD-3C to enforce compliance with its specifications and assure users of compatibility.
  • 2.7K
  • 07 Oct 2022
Topic Review
Kairos
Kairos (καιρός) is an Ancient Greek word meaning the right, critical, or opportune moment. The ancient Greeks had two words for time: chronos (χρόνος) and kairos. The former refers to chronological or sequential time, while the latter signifies a proper or opportune time for action. While chronos is quantitative, kairos has a qualitative, permanent nature. Kairos also means weather in Modern Greek. The plural, καιροί (kairoi (Ancient and Modern Greek)) means the times. Kairos is a term, idea, and practice that has been applied in several fields including classical rhetoric, modern rhetoric, digital media, Christian theology, and science.
  • 6.7K
  • 07 Oct 2022
Topic Review
Integrated Landscape Management
Integrated landscape management is a way of managing a landscape that brings together multiple stakeholders, who collaborate to integrate policy and practice for their different land use objectives, with the purpose of achieving sustainable landscapes. Integrated landscape management is one approach to addressing the major global challenges of poverty, food security, climate change, water scarcity, deforestation and loss of biodiversity at the local level. Proponents of integrated landscape management argue that as these challenges are interconnected, coordinated approaches are needed to address them, in order for landscapes (heterogenous geographic areas) to generate multiple benefits. For example, one river basin can supply water for towns and agriculture, timber and food crops for smallholders and industry, and habitat for biodiversity; the way in which each one of these sectors pursues its goals can have impacts on the others. The integrated approach goes beyond traditional sector-based practices that manage these different land uses independently of each other, even where they depend on the same resource base. The intention is to manage landscapes in a joined-up way, so that society's needs can be met in the short term, and in the long term. Integrated landscape management is increasingly recognised and taken up by intergovernmental bodies, government initiatives, research institutes, and some of the world's largest conservation NGOs, resulting in an increase in the number of examples of the approach in practice. However, barriers to uptake include difficulties in monitoring integrated landscape management and the proliferation of definitions and terms relating to it.
  • 2.1K
  • 07 Oct 2022
Topic Review
Friction-plate Electromagnetic Couplings
Electromagnetic clutches and brakes operate electrically, but transmit torque mechanically. This is why they used to be referred to as electro-mechanical clutches or brakes. Over the years, EM became known as electromagnetic versus electro mechanical, referring more about their actuation method versus physical operation. Since the clutches started becoming popular over 60 years ago, the variety of applications and brake and clutch designs has increased dramatically, but the basic operation remains the same. This article is about the working principles of single face friction plate clutches and brakes. In this article, clutches and brakes are referred to as (mechanical) couplings.
  • 1.1K
  • 07 Oct 2022
Topic Review
Maitreya
Template:Infobox Buddha Maitreya (Sanskrit), Metteyya (Pali), is regarded as a future Buddha of this world in Buddhist eschatology. In some Buddhist literature, such as the Amitabha Sutra and the Lotus Sutra, he is referred to as Ajita. According to Buddhist tradition, Maitreya is a bodhisattva who will appear on Earth in the future, achieve complete enlightenment, and teach the pure dharma. According to scriptures, Maitreya will be a successor to the present Buddha, Gautama Buddha (also known as Śākyamuni Buddha). The prophecy of the arrival of Maitreya refers to a time in the future when the dharma will have been forgotten by most on the terrestrial world. Maitreya has also been adopted for his millenarian role by many non-Buddhist religions in the past, such as the White Lotus, as well as by modern new religious movements, such as Yiguandao.
  • 9.3K
  • 07 Oct 2022
Topic Review
Humboldt Current
The Humboldt Current, also called the Peru Current, is a cold, low-salinity ocean current that flows north along the western coast of South America. It is an eastern boundary current flowing in the direction of the equator, and extends 500–1,000 km (310–620 mi) offshore. The Humboldt Current is named after the Prussian naturalist Alexander von Humboldt. In 1846, von Humboldt reported measurements of the cold-water current in his book Cosmos. The current extends from southern Chile (~45th parallel south) to northern Peru (~4th parallel south) where cold, upwelled, waters intersect warm tropical waters to form the Equatorial Front. Sea surface temperatures off the coast of Peru, around 5th parallel south, reach temperatures as low as 16 °C (61 °F). This is highly uncharacteristic of tropical waters, as most other regions have temperatures measuring above 25 °C (77 °F). Upwelling brings nutrients to the surface, which support phytoplankton and ultimately increase biological productivity. The Humboldt Current is a highly productive ecosystem. It is the most productive eastern boundary current system. It accounts for roughly 18-20% of the total worldwide marine fish catch. The species are mostly pelagic: sardines, anchovies and jack mackerel. The system's high productivity supports other important fishery resources as well as marine mammals (eared seals and cetaceans) and seabirds. Periodically, the upwelling that drives the system's productivity is disrupted by the El Niño-Southern Oscillation (ENSO) event, often with large social and economic impacts. The Humboldt has a considerable cooling influence on the climate of Chile, Peru and Ecuador. It is also largely responsible for the aridity of Atacama Desert in northern Chile and coastal areas of Peru and also of the aridity of southern Ecuador. Marine air is cooled by the current and thus is not conducive to generating precipitation (although clouds and fog are produced).
  • 3.0K
  • 07 Oct 2022
Topic Review
Nest Learning Thermostat
The Nest Learning Thermostat (or Nest Thermostat) is a smart thermostat developed by Nest Labs and designed by Tony Fadell, Ben Filson, and Fred Bould. It is an electronic, programmable, and self-learning Wi-Fi-enabled thermostat that optimizes heating and cooling of homes and businesses to conserve energy. The device is based on a machine learning algorithm: for the first weeks users have to regulate the thermostat in order to provide the reference data set. The thermostat can then learn people's schedule, at which temperature they are used to and when. Using built-in sensors and phones' locations, it can shift into energy saving mode when it realizes nobody is at home.
  • 2.3K
  • 07 Oct 2022
Topic Review
List of the Verified Oldest People
This is a list of the 100 verified oldest people, arranged in descending order of each individual's age in years and days. A year typically refers to a calendar year, the time between two dates of the same name. However, years can be of different lengths due to the presence or absence of a leap day within the year, or to the conversion of dates from one calendar to another. The oldest person ever whose age has been verified is Jeanne Calment (1875–1997) of France, who died at the age of 122 years, 164 days. There are six living people on this list, all of whom are women and the oldest of whom is Kane Tanaka of Japan, aged 119 years, 234 days. Since all the people on this list have lived past the age of 110, all of them have been, or still are, supercentenarians.
  • 25.1K
  • 07 Oct 2022
Topic Review
AMD Radeon Software Crimson
AMD Radeon Software (formerly named ATI Catalyst and AMD Catalyst) is a device driver and utility software package for Advanced Micro Devices's graphics cards and APUs. It runs on Microsoft Windows and Linux, on 32- and 64-bit x86 processors.
  • 2.4K
  • 07 Oct 2022
Topic Review
Comparison of Chernobyl and Other Radioactivity Releases
This article compares the radioactivity release and decay from the Chernobyl disaster with various other events which involved a release of uncontrolled radioactivity.
  • 5.7K
  • 07 Oct 2022
  • Page
  • of
  • 863

Other Entry Collections

>>