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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.

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Transponder Timing
Transponder timing (also called chip timing or RFID timing) is a technique for measuring performance in sport events. A transponder working on a radio-frequency identification (RFID) basis is attached to the athlete and emits a unique code that is detected by radio receivers located at the strategic points in an event. Prior to the use of this technology, races were either timed by hand (with operators pressing a stopwatch) or using video camera systems.
  • 1.2K
  • 27 Sep 2022
Topic Review
List of Traffic Separation Schemes
A Traffic Separation Scheme is an area in the sea where navigation of ships is highly regulated. It is meant to create lanes in the water and ships in a specific lane are all going in (roughly) the same direction. A TSS is created in locations with dense shipping where ships can go in different directions and where there is a high risk of collisions. In the overview below the regulating authority is always the IMO unless stated differently) If below TSS or Routing Scheme is not governed by the IMO the governing body will be mentioned between ' (brackets). 
  • 3.2K
  • 29 Sep 2022
Topic Review
Attachment and Health
Attachment and Health is psychological model which considers how attachment theory pertains to people’s preferences and expectations for the proximity of others when faced with stress, threat, danger or pain. In 1982 the American Psychiatrist, Lawrence Kolb, noticed that patients with chronic pain displayed behaviours with their healthcare providers akin to what children might display with an attachment figure, thus marking one of the first applications of attachment theory to physical health. Development of adult attachment theory and adult attachment measures in the 1990s provided researchers with the means to apply attachment theory to health in a more systematic way. Since that time it has been used to understand variation in stress response, health outcomes and health behaviour. Ultimately, the application of attachment theory to health care may enable health care practitioners to provide more personalized medicine by creating a deeper understanding of patient distress and allowing clinicians to better meet their needs and expectations.
  • 1.5K
  • 27 Sep 2022
Topic Review
The Simple Function Point (SFP) Method
The Simple Function Point (SFP) method is a lightweight Functional Measurement Method. The Simple Function Point method was designed to be compliant with the ISO14143-1 standard and compatible with the International Function Points User Group (IFPUG) Function Point Analysis (FPA) method. The original method is described in a manual produced by the Simple Function Point Association: the Simple Function Point Functional Size Measurement Method Reference Manual is available under the Creatives Commons Attribution-NoDerivatives 4.0 International Public License.
  • 1.8K
  • 27 Sep 2022
Topic Review
Winkler Index
The Winkler Index, sometimes known as the Winkler Scale or Winkler Regions, is a technique for classifying the climate of wine growing regions based on heat summation or growing degree-days. In the system, geographical areas are divided into five climate regions based on temperature converted to growing degree-days, and is commonly known as Regions I–V (see below). The system was developed at the University of California, Davis by A. J. Winkler and Maynard Amerine.
  • 2.9K
  • 27 Sep 2022
Topic Review
Shark Barrier
A shark barrier (otherwise known as a "shark-proof enclosure" or "beach enclosure") is seabed-to-surface protective barrier that is placed around a beach to protect people from shark attacks. Often confused with shark nets, shark barriers form a fully enclosed swimming area that prevents sharks from entering (nets aim to reduce shark populations). Shark barrier design has evolved from rudimentary fencing materials to netted structures held in place with buoys and anchors. Recent designs have used plastics to increase strength, versatility and to reduce the environmental damage of bycatch.
  • 1.6K
  • 27 Sep 2022
Topic Review
Retail Price Index
In the United Kingdom, the Retail Prices Index or Retail Price Index (RPI) is a measure of inflation published monthly by the Office for National Statistics. It measures the change in the cost of a representative sample of retail goods and services. As the RPI was held not to meet international statistical standards, since 2013 the Office for National Statistics no longer classifies it as a "national statistic", emphasising the Consumer Price Index instead. However, as of 2018 the UK Treasury still uses the RPI measure of inflation for various index-linked tax rises.
  • 2.0K
  • 27 Sep 2022
Topic Review
Applications of Nanotechnology
The applications of nanotechnology, commonly incorporate industrial, medicinal, and energy uses. These include more durable construction materials, therapeutic drug delivery, and higher density hydrogen fuel cells that are environmentally friendly. Bein that nanoparticles and nanodevices are highly versatile through modification of their physiochemical properties, they have found uses in nanoscale electronics, cancer treatments, vaccines, hydrogen fuel cells, and nanographene batteries. Nanotechnology's use of smaller sized materials allows for adjustment of molecules and substances at the nanoscale level, which can further enhance the mechanical properties of materials or grant access to less physically accessible areas of the body.
  • 1.7K
  • 29 Sep 2022
Topic Review
Grongar Hill
Grongar Hill is located in the Welsh county of Carmarthenshire and was the subject of a loco-descriptive poem by John Dyer. Published in two versions in 1726, during the Augustan period, its celebration of the individual experience of the landscape makes it a precursor of Romanticism. As a prospect poem, it has been the subject of continuing debate over how far it meets artistic canons.
  • 719
  • 27 Sep 2022
Topic Review
Spin
Spin is an intrinsic form of angular momentum carried by elementary particles, and thus by composite particles (hadrons) and atomic nuclei. Spin is one of two types of angular momentum in quantum mechanics, the other being orbital angular momentum. The orbital angular momentum operator is the quantum-mechanical counterpart to the classical angular momentum of orbital revolution and appears when there is periodic structure to its wavefunction as the angle varies. For photons, spin is the quantum-mechanical counterpart of the polarization of light; for electrons, the spin has no classical counterpart. The existence of electron spin angular momentum is inferred from experiments, such as the Stern–Gerlach experiment, in which silver atoms were observed to possess two possible discrete angular momenta despite having no orbital angular momentum. The existence of the electron spin can also be inferred theoretically from the spin–statistics theorem and from the Pauli exclusion principle—and vice versa, given the particular spin of the electron, one may derive the Pauli exclusion principle. Spin is described mathematically as a vector for some particles such as photons, and as spinors and bispinors for other particles such as electrons. Spinors and bispinors behave similarly to vectors: they have definite magnitudes and change under rotations; however, they use an unconventional "direction". All elementary particles of a given kind have the same magnitude of spin angular momentum, though its direction may change. These are indicated by assigning the particle a spin quantum number. The SI unit of spin is the same as classical angular momentum (i.e., N·m·s, J·s, or kg·m2·s−1). In practice, spin is given as a dimensionless spin quantum number by dividing the spin angular momentum by the reduced Planck constant ħ, which has the same dimensions as angular momentum, although this is not the full computation of this value. Very often, the "spin quantum number" is simply called "spin". The fact that it is a quantum number is implicit.
  • 3.8K
  • 27 Oct 2022
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