Search | Encyclopedia MDPI

You're using an outdated browser. Please upgrade to a modern browser for the best experience.

Subject:

Sort by:

Most Viewed Latest Alphabetical (A-Z) Alphabetical (Z-A)

Filter:

All Topic Review Biography Peer Reviewed Entry Video Entry

Topic Review

TPT (time partition testing) is a systematic test methodology for the automated software test and verification of embedded control systems, cyber-physical systems, and dataflow programs. TPT is specialised on testing and validation of embedded systems whose inputs and outputs can be represented as signals and is a dedicated method for testing continuous behaviour of systems. Most control systems belong to this system class. The outstanding characteristic of control systems is the fact that they interact closely interlinked with a real world environment. Controllers need to observe their environment and react correspondingly to its behaviour. The system works in an interactional cycle with its environment and is subject to temporal constraints. Testing these systems is to stimulate and to check the timing behaviour. Traditional functional testing methods use scripts – TPT uses model-based testing. TPT combines a systematic and graphic modelling technique for test cases with a fully automated test execution in different environments and automatic test evaluation. TPT covers the following four test activities:

2.1K
08 Oct 2022

Topic Review

Comparison of Version Control Software

The following is a comparison of version control software. The following tables include general and technical information on notable version control and software configuration management (SCM) software. For SCM software not suitable for source code, see Comparison of open source configuration management software.

2.1K
08 Oct 2022

Topic Review

React (Web Framework)

React (also known as React.js or ReactJS) is an open-source JavaScript library for building user interfaces. It is maintained by Facebook and a community of individual developers and companies. React can be used as a base in the development of single-page or mobile applications. However, React is only concerned with rendering data to the DOM, and so creating React applications usually requires the use of additional libraries for state management and routing. Redux and React Router are respective examples of such libraries.

2.1K
10 Oct 2022

Topic Review

Uplay is a digital distribution, digital rights management, multiplayer and communications service developed by Ubisoft to provide an experience similar to the achievements/trophies offered by various other game companies. The service is provided across various platforms. Uplay is used exclusively by first-party Ubisoft games, and although some third-party ones are sold through the Uplay store, they do not use the Uplay platform. Responses to the platform have been generally negative, with coverage comparing it negatively to its competitors and calling it the worst part of Ubisoft's games.

2.1K
30 Nov 2022

Topic Review

After Dark is a series of computer screensaver software introduced by Berkeley Systems in 1989 for the Apple Macintosh, and in 1991 for Microsoft Windows. Following the original, additional editions included More After Dark, Before Dark, and editions themed around licensed properties such as Star Trek, The Simpsons, Looney Tunes, Marvel, and Disney characters. On top of the included animated screensavers, the program allowed for the development and use of third-party modules, many hundreds of which were created at the height of its popularity.

2.1K
02 Nov 2022

Topic Review

Analytica is a visual software developed by Lumina Decision Systems for creating, analyzing and communicating quantitative decision models. It combines hierarchical influence diagrams for visual creation and view of models, intelligent arrays for working with multidimensional data, Monte Carlo simulation for analyzing risk and uncertainty, and optimization, including linear and nonlinear programming. Its design, especially its influence diagrams and treatment of uncertainty, is based on ideas from the field of decision analysis. As a computer language, it combines a declarative (non-procedural) structure for referential transparency, array abstraction, and automatic dependency maintenance for efficient sequencing of computation.

2.1K
25 Oct 2022

Topic Review

Comparison of JavaScript Frameworks

There are many JavaScript frameworks available. The intention of this comparison is to show some examples of notable JavaScript frameworks.

2.1K
26 Oct 2022

Topic Review

Lithium Technologies

Lithium Technologies is a San Francisco-based provider of software that allows businesses to connect with their customers on social media and digital channels. Lithium was founded in 2001 as a spin-out from GX Media, which created technologies for professional rankings and tournaments and now hosts a number of popular gaming sites. The company's founders include Dennis Fong, Lyle Fong, Michel Thouati, Kirk Yokomizo, John Joh, Nader Alizadeh, Michael Yang, and Matt Ayres. The Lithium platform comprises a set of products for digital marketing and social customer support, including Lithium Communities, which act as the hub for a brand's digital conversations; Lithium Response, a social customer care tool; and Lithium Reach a social media management tool. Klout data powers the Lithium platform with its proprietary algorithms and volume of data with over 750M scored profiles." Lithium's SaaS platform combines online customer community applications such as forums, blogs, innovation management, product reviews, and tribal knowledge bases with the broader social web and traditional CRM business processes, resulting in a wide range of online customer interaction methods. Stemming from its gaming roots, the platform incorporates elaborate rating systems for contributors, with ranks, badges, and "kudos counts". Lithium hosts an annual user conference, LiNC (Lithium Networking Conference) designed to give digital strategists a deeper understanding of trends in social customer engagement. Since its inception in 2008, the event has grown 1,100% to 900+ attendees in 2016. In 2017, the company held a series of localized LiNC events in cities like London, San Francisco, and Sydney.

2.0K
18 Nov 2022

Topic Review

Comparison of VMware Fusion and Parallels Desktop

Represented by their respective products, VMware and Parallels, Inc. are the two commercial competitors in the Mac consumer platform virtualization market. Both products are based on hypervisor technology and allow users to run an additional 32- or 64-bit x86 operating system in a virtual machine alongside Mac OS X on an Intel-powered Mac. The similarity in features and functionality between VMware Fusion and Parallels Desktop for Mac has given occasion for much comparison.

2.0K
28 Sep 2022

Topic Review

Test Data Generation

Test data generation, an important part of software testing, is the process of creating a set of data for testing the adequacy of new or revised software applications. It may be the actual data that has been taken from previous operations or artificial data created for this purpose. Test Data Generation is seen to be a complex problem and though a lot of solutions have come forth most of them are limited to toy programs. The use of dynamic memory allocation in most of the code written in industry is the most severe problem that the Test Data Generators face as the usage of the software then becomes highly unpredictable, due to this it becomes harder to anticipate the paths that the program could take making it nearly impossible for the Test Data Generators to generate exhaustive Test Data. However, in the past decade significant progress has been made in tackling this problem better by the use of genetic algorithms and other analysis algorithms. Moreover, Software Testing is an important part of the Software Development Life Cycle and is basically labor-intensive. It also accounts for nearly one third of the cost of the system development. In this view the problem of generating quality test data quickly, efficiently and accurately is seen to be important.

2.0K
25 Oct 2022

Topic Review

ACID (Computer Science)

In computer science, ACID (Atomicity, Consistency, Isolation, Durability) is a set of properties of database transactions intended to guarantee validity even in the event of errors, power failures, etc. In the context of databases, a sequence of database operations that satisfies the ACID properties (and these can be perceived as a single logical operation on the data) is called a transaction. For example, a transfer of funds from one bank account to another, even involving multiple changes such as debiting one account and crediting another, is a single transaction. In 1983, Andreas Reuter and Theo Härder coined the acronym ACID as shorthand for Atomicity, Consistency, Isolation, and Durability, building on earlier work by Jim Gray who enumerated Atomicity, Consistency, and Durability but left out Isolation when characterizing the transaction concept. These four properties describe the major guarantees of the transaction paradigm, which has influenced many aspects of development in database systems. According to Gray and Reuter, IMS supported ACID transactions as early as 1973 (although the term ACID came later).

2.0K
23 Nov 2022

Topic Review

Squid is a caching and forwarding HTTP web proxy. It has a wide variety of uses, including speeding up a web server by caching repeated requests, caching web, DNS and other computer network lookups for a group of people sharing network resources, and aiding security by filtering traffic. Although primarily used for HTTP and FTP, Squid includes limited support for several other protocols including Internet Gopher, SSL, TLS and HTTPS. Squid does not support the SOCKS protocol, unlike Privoxy, with which Squid can be used in order to provide SOCKS support. Squid was originally designed to run as a daemon on Unix-like systems. A Windows port was maintained up to version 2.7. New versions available on Windows use the Cygwin environment. Squid is free software released under the GNU General Public License.

2.0K
18 Nov 2022

Topic Review

Oracle Policy Automation

Oracle Policy Automation (abbreviated OPA) is a suite of software products for modeling and deploying business rules within enterprise applications. Oracle Corporation acquired OPA in December 2008 when it purchased Australian software company RuleBurst Holdings, then trading as Haley. Oracle Policy Automation was designed by RuleBurst to transform legislation and policy documents into executable business rules, particularly for the calculation of benefit entitlements and payment amounts. Although OPA was originally developed for and sold to the public sector, it can be used in other industries. Oracle Policy Automation continues to be available as a standalone offering and an integrated rules solution for SAP and Siebel.

2.0K
16 Nov 2022

Topic Review

Intrusion Detection Systems

Intrusion detection systems and intrusion prevention systems are to prevent network intruders' attack and malicious compliance. Network communities have produced benchmark datasets available for researchers to improve the accuracy of intrusion detection systems. The scientific community has presented data mining and machine learning-based mechanisms to detect intrusion with high classification accuracy.

2.0K
21 Sep 2021

Topic Review

360-Degree Video Bandwidth Reduction Techniques

The usage of 360-degree videos has prevailed in various sectors such as education, real estate, medical, entertainment and more. However, various challenges are faced to provide real-time streaming due to the nature of high-resolution 360-degree videos such as high bandwidth requirement, high computing power and low delay tolerance. To overcome these challenges, streaming methods such as dynamic adaptive streaming over HTTP (DASH), tiling, viewport-adaptive and machine learning (ML) are discussed.

2.0K
09 Aug 2022

Topic Review

Save Your Voice

Save Your Voice is a movement against internet censorship in India. It was founded by cartoonist Aseem Trivedi, journalist Alok Dixit, socialist Arpit Gupta and Chirag Joshi in January 2012. The movement was initially named "Raise Your Voice", before it was renamed. The movement started from Ujjain in Madhya Pradesh, under the frontier-ship of the movement's four founders; with a "Langda March" at Ujjain. The movement opposes the Information Technology Act of India and demands democratic rules for the governance of Internet. The campaign is targeted at the rules framed under the Information Technology Act, 2000.

2.0K
11 Nov 2022

Topic Review

MSN TV (formerly WebTV) was a web access product consisting of a thin client device which used a television for display (instead of using a computer monitor), and the online service that supported it. The device design and service was developed by WebTV Networks, Inc., a company started in 1995. The WebTV product was announced in July 1996 and later released on September 18, 1996. In April 1997, the company was purchased by Microsoft Corporation and in July of 2001, was rebranded to MSN TV and absorbed into MSN. While most thin clients developed in the mid-1990s were positioned as diskless workstations for corporate intranets, WebTV was positioned as a consumer product, primarily targeting those looking for a low-cost alternative to a computer for Internet access. The WebTV and MSN TV devices allowed a television set to be connected to the Internet, mainly for web browsing and e-mail. The WebTV/MSN TV service, however, also offered its own exclusive services such as a "walled garden" newsgroup service, news and weather reports, storage for user bookmarks (Favorites), IRC (and for a time, MSN Chat) chatrooms, a Page Builder service that let WebTV users create and host webpages that could later be shared to others via a link if desired, dedicated sections for aggregated content covering various topics (entertainment, romance, stocks, etc.), and a few years after Microsoft bought out WebTV, integration with MSN Messenger and Hotmail. The setup included a thin client in the form of a set-top box, a remote, a network connection using dial-up, or with the introduction of Rogers Interactive TV and the MSN TV 2, the option to use broadband, and a wireless keyboard, which was sold optionally up until the 2000s. The WebTV/MSN TV service lasted for 17 years, shutting down on September 30, 2013 and allowing subscribers to migrate their data well before that date arrived. The original WebTV network relied on a Solaris backend network and telephone lines to deliver service to customers via dial-up, with "frontend servers" that talk directly to boxes using a custom protocol, the WebTV Protocol (WTVP), to authenticate users and deliver content to boxes. For the MSN TV 2, however, a completely new service based on IIS servers and regular HTTP/HTTPS services was used.

2.0K
25 Nov 2022

Topic Review

Hearing Aid Application

Hearing aid application (HAA) is software which, when installed on a mobile computational platform, helps with hearing. Mobile devices may include smartphones, tablets or smart watch.

2.0K
08 Oct 2022

Topic Review

Sky Angel was a U.S. operator of Christian television networks; it operated three channels, Angel One, Angel Two, and KTV, all of which were exclusive to Dish Network. The company's corporate headquarters were located in Naples, Florida. The company also operated a Chattanooga, Tennessee location where programming, engineering and network operations resided. The company previously operated as a Christian-oriented television provider carrying religious and family-oriented programming, first as a satellite television service, and later as an over-the-top internet television provider. The shift to an IPTV platform was later accompanied by the spin-off of the provider's secular offerings into a second service known as FAVE TV. On January 14, 2014, Sky Angel ceased its IPTV business, citing that because it did not fall under the traditional legal definition of a multichannel video programming distributor, it was unable to employ legal remedies for its allegations that broadcasters were discriminating against its business model by preventing carriage of their channels.

2.0K
12 Oct 2022

Topic Review

Ulteo Open Virtual Desktop

Ulteo Open Virtual Desktop (OVD) was an open-source Application Delivery and Virtual Desktop infrastructure project that could deliver applications or a desktop hosted on a Linux or Windows server to end users. It was an open source alternative to Citrix and VMware solutions and was, as of June 2012, the only presentation virtualization solution supporting both Linux and Windows applications. It was created by Gaël Duval, who previously created Mandriva Linux. The software seems to be withdrawn, website is unavailable.

1.9K
28 Nov 2022

Page
of
19

Featured Entry Collections

>>

Featured Books

>>

Encyclopedia of COVID-19

Encyclopedia of Engineering

Encyclopedia of Social Sciences

Encyclopedia of Social Sciences
Chief Editor: Kum Fai Yuen

Encyclopedia of Digital Society, Industry 5.0 and Smart City

Encyclopedia of Digital Society, Industry 5.0 and Smart City
Chief Editor: Sandro Serpa

Academic Video Service

Feedback

Top