Subject:
All Disciplines Arts & Humanities Biology & Life Sciences Business & Economics Chemistry & Materials Science Computer Science & Mathematics Engineering Environmental & Earth Sciences Medicine & Pharmacology Physical Sciences Public Health & Healthcare Social Sciences
Sort:
Hottest Latest Alphabetical (A-Z) Alphabetical (Z-A)
Type:
All Topic Review Biography
Topic Review
Options Strategy
Option strategies are the simultaneous, and often mixed, buying or selling of one or more options that differ in one or more of the options' variables. Call options, simply known as calls, give the buyer a right to buy a particular stock at that option's strike price. Conversely, put options, simply known as puts, give the buyer the right to sell a particular stock at the option's strike price. This is often done to gain exposure to a specific type of opportunity or risk while eliminating other risks as part of a trading strategy. A very straightforward strategy might simply be the buying or selling of a single option, however option strategies often refer to a combination of simultaneous buying and or selling of options. Options strategies allow traders to profit from movements in the underlying assets based on market sentiment (i.e., bullish, bearish or neutral). In the case of neutral strategies, they can be further classified into those that are bullish on volatility, measured by the lowercase Greek letter sigma (σ), and those that are bearish on volatility. Traders can also profit off time decay, measured by the uppercase Greek letter theta (Θ), when the stock market has low volatility. The option positions used can be long and/or short positions in calls and puts.
  • 1.0K
  • 17 Nov 2022
Topic Review
Peppermint Linux OS
Peppermint Linux OS is a cloud-centric OS based on Lubuntu, a derivative of the Ubuntu Linux operating system that uses the LXDE desktop environment. Peppermint's developers have written about their principles of providing a familiar environment for newcomers to Linux, which requires relatively low hardware resources to run.
  • 1.0K
  • 03 Nov 2022
Topic Review
Go Variants
There are many variations of the simple rules of Go. Some are ancient digressions, while other are modern deviations. They are often side events at tournaments, for example, the U.S. Go Congress holds a "Crazy Go" event every year.
  • 1.0K
  • 25 Nov 2022
Topic Review
Navigation Systems for the Visually Impaired
The visually impaired suffer greatly while moving from one place to another. They face challenges in going outdoors and in protecting themselves from moving and stationary objects, and they also lack confidence due to restricted mobility. Due to the recent rapid rise in the number of visually impaired persons, the development of assistive devices has emerged as a significant research field.
  • 1.0K
  • 07 Nov 2022
Topic Review
Z4 (Computer)
The Z4 was arguably the world's first commercial digital computer. It was designed, and manufactured by early computer scientist Konrad Zuse's company Zuse Apparatebau, for an order placed by Henschel & Son, in 1942; though only partially assembled in Berlin, then completed in Göttingen, and not delivered by the defeat of Nazi Germany, in 1945. The Z4 was Zuse's final target for the Z3 design. Like the earlier Z2, it comprised a combination of mechanical memory and electromechanical logic, so was not a true electronic computer.
  • 1.0K
  • 08 Nov 2022
Topic Review
Proof-of-Work System
A Proof-of-Work (PoW) system (or protocol, or function) is an economic measure to deter denial of service attacks and other service abuses such as spam on a network by requiring some work from the service requester, usually meaning processing time by a computer. The concept was invented by Cynthia Dwork and Moni Naor as presented in a 1993 journal article. The term "Proof of Work" or PoW was first coined and formalized in a 1999 paper by Markus Jakobsson and Ari Juels. An early example of the proof-of-work system used to give value to a currency is the shell money of the Solomon Islands. A key feature of these schemes is their asymmetry: the work must be moderately hard (but feasible) on the requester side but easy to check for the service provider. This idea is also known as a CPU cost function, client puzzle, computational puzzle or CPU pricing function. It is distinct from a CAPTCHA, which is intended for a human to solve quickly, rather than a computer. Proof of space (PoSpace) proposals apply the same principle by proving a dedicated amount of memory or disk space instead of CPU time. Proof-of-Stake, Proof of bandwidth, and other approaches have been discussed in the context of cryptocurrency. Proof of ownership aims at proving that specific data are held by the prover.
  • 1.0K
  • 07 Nov 2022
Topic Review
IoT Word's Hardware Requirements
The growth of the number of devices connected to the Internet is steadily increasing. In the future, more and more everyday objects will host embedded electronics to make them smarter and more useful then before, under the name of Internet of Things (IoT). Most of these items will be powered by small batteries and thus will have a limited energy budget. They will have to accurately balance performances and power usage to extend their lifespan. This can be implemented at various level, from the lowest one, the technology, to the highest, the algorithm. It is not possible to send all the data to a cloud server for processing, in particular if data can be preprocessed effectively to save computational resources on the cloud and to send only useful information. This paradigm is called edge-computing, as the end devices act at the "edge" of the cloud. This survey paper presents various recent ultra-low power hardware architectures for IoT, along with the explanation of some low power techniques to make the IoT tasks possibile at the large scales required. Some newest research topics are discussed, leading to the description of a fully functional digital system which encloses all the presented techniques.
  • 1.0K
  • 28 Oct 2020
Topic Review
Zoom
Zoom Meetings (commonly shortened to Zoom, and stylized as zoom) is a proprietary videotelephony software program developed by Zoom Video Communications. The free plan allows up to 100 concurrent participants, with a 40-minute time restriction. Users have the option to upgrade by subscribing to a paid plan. The highest plan supports up to 1,000 concurrent participants for meetings lasting up to 30 hours. During the COVID-19 pandemic, there was a major increase in the use of Zoom for remote work, distance education, and online social relations. The increase led to Zoom being one of the most downloaded mobile app worldwide in 2020 with over 500 million downloads. In 2020 Zoom had over 300 million daily meeting participants.
  • 1.0K
  • 18 Oct 2022
Topic Review
FPGA in Decimal Arithmetic
Decimal operations are executed with slow software-based decimal arithmetic functions. For the fast execution of decimal operations, dedicated hardware units have been proposed and designed in FPGA. Decimal addition and multiplication is found in most decimal-based applications and so its design is very important for fast execution. This entry describes recent solutions for decimal multiplication and addition in FPGA.
  • 1.0K
  • 16 Jul 2021
Topic Review
Wubi
Wubi ("Windows-based Ubuntu Installer") is a free software Ubuntu installer, that was the official Windows-based software, from 2008 until 2013, to install Ubuntu from within Windows, to a single file within an existing Windows partition. After installation, it added a new "Ubuntu" option to the existing Windows boot menu which allowed the user to choose between running Linux or Windows, and avoided the need to re-partition the disk.
  • 1.0K
  • 21 Nov 2022
  • Page
  • of
  • 371
Featured Entry Collections
>>

Featured Books

>>
Encyclopedia of Social Sciences
Encyclopedia of COVID-19
Encyclopedia of Fungi
Encyclopedia of Digital Society, Industry 5.0 and Smart City
Video Production Service
Feedback