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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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Biography
Alfredo Co
Alfredo Pimentel Co 许培堆 (born November 30, 1949) is the foremost Sinologist and one of the most sought-after lecturers in the Philippines.[1][2][3]He was the founding president of the Philosophy Circle of the Philippines and is currently the President of the Philippine Academy of Philosophical Research, chairman of the Commission on Higher Education's Technical Committee on Philosophy, and
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  • 22 Nov 2022
Topic Review
Poly Drug Use
Poly drug use or polysubstance use refers to the use of combined psychoactive substances for recreational purposes. In many cases one drug is used as a base or primary drug, with additional drugs to leaven or compensate for the side effects of the primary drug and make the experience more enjoyable with drug synergy effects, or to supplement for primary drug when supply is low.
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  • 17 Nov 2022
Biography
Tanya Harrison
(Dr.) Tanya Harrison is a Planetary Scientist and Manager of Science Programs at Planet Labs, working in their federal arm with science agencies to increase research use of Planet Labs' Earth observing satellite data. Previously she was the Director of Research at Arizona State University's Space Technology and Science Initiative, and was on the science team of the Mars Opportunity and Curiosity
  • 1.8K
  • 22 Nov 2022
Topic Review
Root System of a Semi-simple Lie Algebra
In mathematics, there is a one-to-one correspondence between reduced crystallographic root systems and semisimple Lie algebras. Here the construction of a root system of a semisimple Lie algebra – and, conversely, the construction of a semisimple Lie algebra from a reduced crystallographic root system – are shown.
  • 1.1K
  • 17 Nov 2022
Topic Review
Electric Vehicles in Hong Kong
The adoption of electric vehicles in Hong Kong is actively supported by the HK government, which recognizes battery electric vehicles, plug-in hybrids, and conventional hybrid electric vehicles to be environmentally friendly and eligible for financial incentives. As of 31 October 2017, there were 11,039 electric vehicles in Hong Kong, up from less than 100 in 2010. At present, 73 EV models from eight countries have been approved by the Transport Department to be eligible for the incentives. These include 51 models for private cars and motorcycles and 22 models for public transport and commercial vehicles.
  • 2.7K
  • 21 Nov 2022
Topic Review
Mad Pride
Mad Pride is a mass movement of the users of mental health services, former users, and the aligned, and that individuals with mental illness should be proud of their 'mad' identity. It was formed in 1993 in response to local community prejudices towards people with a psychiatric history living in boarding homes in the Parkdale area of Toronto, Ontario, Canada, and an event has been held every year since then in the city except for 1996. A similar movement began around the same time in the United Kingdom. By the late 1990s similar events were being organized under the Mad Pride name around the globe, including Australia, Ireland, Portugal, Brazil, Madagascar, South Africa and the United States. Events draw thousands of participants, according to MindFreedom International, a United States mental health advocacy organization that promotes and tracks events spawned by the movement. Mad Pride activists seek to reclaim terms such as "mad", "nutter", and "psycho" from misuse, such as in tabloid newspapers and in order to switch it from a negative message into a positive one. Through a series of mass media campaigns, Mad Pride activists seek to re-educate the general public on such subjects as the causes of mental disabilities, the experiences of those using the mental health system, and the global suicide pandemic. One of Mad Pride's founding activists in the UK was Pete Shaughnessy, who later died by suicide. Mark Roberts, Robert Dellar (who died in 2016) and Simon Barnet were among the other founders of the movement. Mad Pride: A celebration of mad culture records the early Mad Pride movement. On Our Own: Patient-Controlled Alternatives to the Mental Health System, published in 1978 by Judi Chamberlin, is a foundational text in the Mad Pride movement, although it was published before the movement was launched. The first known event, specifically organized as a Pride event by people who identified as survivors, consumers or ex-patients of psychiatric practices, was held on 18 September 1993, when it was called "Psychiatric Survivor Pride Day".
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  • 17 Nov 2022
Topic Review
Petya (Malware)
Petya is a family of encrypting malware that was first discovered in 2016. The malware targets Microsoft Windows–based systems, infecting the master boot record to execute a payload that encrypts a hard drive's file system table and prevents Windows from booting. It subsequently demands that the user make a payment in Bitcoin in order to regain access to the system. The Petya malware had infected millions of people during its first year of its release. The maker of the Petya malware was arrested and fined.[citation needed] Variants of Petya were first seen in March 2016, which propagated via infected e-mail attachments. In June 2017, a new variant of Petya was used for a global cyberattack, primarily targeting Ukraine . The new variant propagates via the EternalBlue exploit, which is generally believed to have been developed by the United States . National Security Agency (NSA), and was used earlier in the year by the WannaCry ransomware. Kaspersky Lab referred to this new version as NotPetya to distinguish it from the 2016 variants, due to these differences in operation. In addition, although it purports to be ransomware, this variant was modified so that it is unable to actually revert its own changes. The NotPetya attacks have been blamed on the Russian government, specifically the Sandworm hacking group within the GRU Russian military intelligence organization, by security researchers, Google, and several governments.
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  • 17 Nov 2022
Topic Review
Encoding (Memory)
Memory has the ability to encode, store and recall information. Memories give an organism the capability to learn and adapt from previous experiences as well as build relationships. Encoding allows a perceived item of use or interest to be converted into a construct that can be stored within the brain and recalled later from long-term memory. Working memory stores information for immediate use or manipulation which is aided through hooking onto previously archived items already present in the long-term memory of an individual.
  • 2.8K
  • 17 Nov 2022
Topic Review
Sandilya Vidya
Śāṇḍilya Vidya is a set of teachings of vidyā or philosophy by the ancient Hindu sage Śāṇḍilya. It is part of the Agnirahasyama of the Shatapatha Upanishad, and its precepts are also set out in the Chandogya Upanishad. The work treats of the universal Absolute (Brahman) and of the practice of faith (Bhakti).
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  • 17 Nov 2022
Topic Review
Conceptual Change
Conceptual change is the process whereby concepts and relationships between them change over the course of an individual person's lifetime or over the course of history. Research in four different fields – cognitive psychology, cognitive developmental psychology, science education, and history and philosophy of science - has sought to understand this process. Indeed, the convergence of these four fields, in their effort to understand how concepts change in content and organization, has led to the emergence of an interdisciplinary sub-field in its own right. This sub-field is referred to as “conceptual change” research.
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