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.

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Vlog
A video blog or video log, sometimes shortened to vlog (/vlɒɡ/), is a form of blog for which the medium is video. Vlog entries often combine embedded video (or a video link) with supporting text, images, and other metadata. Entries can be recorded in one take or cut into multiple parts. Vlog category is popular on the video-sharing platform YouTube. In recent years, "vlogging" has spawned a large community on social media, becoming one of the most popular forms of digital entertainment. It is popularly believed that, alongside being entertaining, vlogs can deliver deep context through imagery as opposed to written blogs. Video logs (vlogs) also often take advantage of web syndication to allow for the distribution of video over the Internet using either the RSS or Atom syndication formats, for automatic aggregation and playback on mobile devices and personal computers (see video podcast).
  • 4.0K
  • 22 Nov 2022
Topic Review
FluxNet
FluxNet is a global network of micrometeorological tower sites that use eddy covariance methods to measure the exchanges of carbon dioxide, water vapor, and energy between the biosphere and atmosphere. Fluxnet is a global 'network of regional networks' that serves to provide an infrastructure to compile, archive and distribute data for the scientific community. It works to ensure that different flux networks are calibrated to facilitate comparison between sites, and it provides a forum for the distribution of knowledge and data between scientists. As of April 2014, there are over 683 tower sites in continuous long-term operation. Researchers also collect data on site vegetation, soil, trace gas fluxes, hydrology, and meteorological characteristics at the tower sites.
  • 1.5K
  • 22 Nov 2022
Topic Review
SkySat
SkySat is a constellation of sub-meter resolution Earth observation satellites owned by Planet Labs, providing imagery, high-definition video and analytics services. Planet acquired the satellites with their purchase of Terra Bella (formerly Skybox Imaging), a Mountain View, California-based company founded in 2009 by Dan Berkenstock, Julian Mann, John Fenwick, and Ching-Yu Hu, from Google in 2017.
  • 1.7K
  • 22 Nov 2022
Topic Review
Productivity Improving Technologies
The productivity improving technologies are the technological innovations that have historically increased productivity. Productivity is often measured as the ratio of (aggregate) output to (aggregate) input in the production of goods and services. Productivity is increased by lowering the amount of labor, capital, energy or materials that go into producing any given amount of economic goods and services. Increases in productivity are largely responsible for the increase in per capita living standards.
  • 3.0K
  • 23 Nov 2022
Topic Review
Impact of Self-Driving Cars
The impact of self-driving cars is anticipated to be wide-ranging on many areas of daily life. Self-driving cars have been the subject of significant research on their environmental, practical, and lifesyle consequences. One significant predicted impact of self-driving cars is a substantial reduction in traffic collisions and resulting severe injuries or deaths. United States government estimates suggest 94% of traffic collisions are caused by human error, with a 2020 study estimating that making 90% of cars on US roads self-driving would save 25,000 lives per year. While this has significant benefits, other health downsides of self-driving cars are predicted; self-driving cars are suggested to worsen air pollution, noise pollution, and sedentary lifestyles, and may contribute to shortages of donor organs. Self-driving cars are anticipated to increase productivity and housing affordability, as well as reclaim land used for parking. However, they are also predicted to cause greater energy use, traffic congestion and sprawl. The impact of self-driving cars on absolute levels of individual car use is not yet clear, with commentators alternatively predicting increases and decreases. Self-driving cars are one of several potential autonomous vehicles, and other forms of self-driving vehicles, such as self-driving buses, may decrease car use and congestion in ways self-driving cars are unlikely to. The effect of self-driving cars on various employment fields is predicted to be wide-ranging. Impacts are anticipated on the healthcare, insurance, travel, and logistics fields. Auto insurance costs are expected to decrease, and the burden of cars on the healthcare system to reduce. Self-driving cars are predicted to have substantial and wide-ranging effects on transportation industries, with significant job losses in these fields.
  • 4.2K
  • 24 Nov 2022
Topic Review
XSwitch
The XSwitch is an interconnect used by the XCore processor. The interconnect protocol is defined by XMOS, and is based around routing messages comprising 9-bit tokens between cores on a network. The protocol is specifically designed for on-chip and board-level communication, but using LVDS drivers it can also run over longer cables.
  • 842
  • 22 Nov 2022
Topic Review
Survivor Guilt
Survivor guilt (or survivor's guilt; also called survivor syndrome or survivor's syndrome and survivor disorder or survivor's disorder) is a mental condition that occurs when a person believes they have done something wrong by surviving a traumatic or tragic event when others did not, often feeling self-guilt. The experience and manifestation of survivor's guilt will depend on an individual's psychological profile. When the Diagnostic and Statistical Manual of Mental Disorders IV (DSM-IV) was published, survivor guilt was removed as a recognized specific diagnosis, and redefined as a significant symptom of post-traumatic stress disorder (PTSD). It may be found among survivors of combat, epidemics, murder, natural disasters, rape, terrorism, accidents, among the friends and family of those who have died by suicide, and in non-mortal situations.
  • 2.2K
  • 22 Nov 2022
Topic Review
Religious Trauma Syndrome
Religious trauma syndrome (RTS) is recognized in psychology and psychotherapy as a set of symptoms, ranging in severity, experienced by those who have participated in and left behind authoritarian, dogmatic, and controlling religious groups and belief systems. Symptoms include cognitive, affective, functional, and social/cultural issues as well as developmental delays. RTS occurs in response to two-fold trauma: first the prolonged abuse of indoctrination from a controlling religious community, and secondly the act of leaving the controlling religious community. RTS has developed as its own heuristic collection of symptoms informed by psychological theories of trauma originating in PTSD, C-PTSD and betrayal trauma theory, taking relational and social context into account when approaching further research and treatment. The term religious trauma syndrome was coined in 2011 by psychologist Marlene Winell in an article for British Association for Behavioural and Cognitive Psychotherapies, though the phenomenon was recognized long before that. The term has circulated among psychotherapists, former fundamentalists, and others recovering from religious indoctrination. Winell explains the need for a label and the benefits of naming the symptoms encompassed by RTS as similar to naming anorexia as a disorder: the label can lessen shame and isolation for survivors while promoting diagnosis, treatment, and training for professionals who work with those suffering from the condition. Survivors report relief when they find out that RTS is “real.”
  • 4.0K
  • 22 Nov 2022
Biography
Robert Pohl
Robert Wichard Pohl (10 August 1884 – 5 June 1976) was a German physicist at the University of Göttingen. Nevill Francis Mott described him as the "father of solid state physics". Göttingen, City Cemetery: The gravestone of Prof. Robert Wichard Pohl and his father-in-law, Prof. Otto Wilhelm Madelung, as well as their wives, Tussa Madelung Pohl and Ottilie Franziska Madelung, and t
  • 2.0K
  • 24 Nov 2022
Topic Review
Modified Frequency Modulation
Modified Frequency Modulation, commonly MFM, is a run-length limited (RLL) coding scheme used to encode the actual data-bits on most floppy disks. It was first introduced in disk drives with the IBM 3330 hard disk drive in 1970. Floppy disk drive hardware examples include Amiga, most CP/M machines as well as IBM PC compatibles. MFM is a modification to the original digital FM (digital frequency modulation also known as delay coding) scheme for encoding data on single-density floppy disks and some early hard disk drives. Due to the minimum spacing between flux transitions that is a property of the disk, head and channel design, MFM, which guarantees at most one flux transition per data bit, can be written at higher density than FM, which can require two transitions per data bit. It is used with a data rate of 250–500 kbit/s (500–1000 kbit/s encoded) on industry standard 5¼-inch and 3½-inch ordinary and high density diskettes. MFM was also used in early hard disk designs, before the advent of more efficient types of run-length limited codes. Except for the steadily disappearing 360 KiB/1.2 MiB (5.25-inch) and 720~880 KiB/1.4~1.6 MiB (3.5-inch) floppy disk formats, MFM encoding is obsolete in magnetic recording.
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  • 22 Nov 2022
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