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Topic Review
IBM POWER Microprocessors
IBM has a series of high performance microprocessors called POWER followed by a number designating generation, i.e. POWER1, POWER2, POWER3 and so forth up to the latest POWER9. These processors have been used by IBM in their RS/6000, AS/400, pSeries, iSeries, System p, System i and Power Systems line of servers and supercomputers. They have also been used in data storage devices by IBM and by other server manufacturers like Bull and Hitachi. The name "POWER" was originally presented as an acronym for "Performance Optimization With Enhanced RISC". The POWERn family of processors were developed in the late 1980s and are still in active development nearly 30 years later. In the beginning, they utilized the POWER instruction set architecture (ISA), but that evolved into PowerPC in later generations and then to Power Architecture, so modern POWER processors do not use the POWER ISA, they use the Power ISA.
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Topic Review
Secure Access Service Edge
Secure Access Service Edge (SASE) is a term coined by analyst firm Gartner, SASE simplifies wide-area networking (WAN) and security by delivering both as a cloud service directly to the source of connection (user, device, branch office, IoT device, edge computing location) rather than the enterprise data center. Security is based on identity, real-time context and enterprise security and compliance policies. An identity may be attached to anything from a person/user to a device, branch office, cloud service, application, IoT system, or an edge computing location. SASE is meant to be a simplified WAN and security solution for a mobile, global workplace that relies on cloud applications and data. The common solution of backhauling all WAN traffic over long distances to one or a few corporate data centers for security functions adds network latency when users and their cloud applications are globally dispersed, rather than on-premises. By targeting services to the edge at the connection source, SASE eliminates the latency caused by backhauling.
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Topic Review
Generalized Quantifier
In linguistic semantics, a generalized quantifier (GQ) is an expression that denotes a set of sets. This is the standard semantics assigned to quantified noun phrases. For example, the generalized quantifier every boy denotes the set of sets of which every boy is a member. This treatment of quantifiers has been essential in achieving a compositional semantics for sentences containing quantifiers.
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Topic Review
USB Dead Drop
A USB dead drop is a USB mass storage device installed in a public space. For example, a USB flash drive might be mounted in an outdoor brick wall and fixed in place with fast concrete. Members of the public are implicitly invited to find files, or leave files, on a dead drop by directly plugging their laptop into the wall-mounted USB stick in order to transfer data. (It is also possible to use smartphones and tablets for this purpose, by utilizing a USB on-the-go cable.) The dead drops can therefore be regarded as an anonymous, offline, peer-to-peer file sharing network. However, in practice USB dead drops are often used for social or artistic reasons, rather than for practical ones.
  • 469
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Topic Review
Common Development and Distribution License
The Common Development and Distribution License (CDDL) is a free and open-source software license, produced by Sun Microsystems, based on the Mozilla Public License (MPL). Files licensed under the CDDL can be combined with files licensed under other licenses, whether open source or proprietary. In 2005 the Open Source Initiative approved the license. The Free Software Foundation (FSF) considers it a free software license, but one which is incompatible with the GNU General Public License (GPL).
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Topic Review
MATE
MATE (/ˈmɑːtɛ/) is a desktop environment composed of free and open-source software that runs on Linux, BSD, and illumos operating systems.
  • 521
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Topic Review
HEAAN
HEAAN (Homomorphic Encryption for Arithmetic of Approximate Numbers) is an open source homomorphic encryption (HE) library which implements an approximate HE scheme proposed by Cheon, Kim, Kim and Song (CKKS). The first version of HEAAN was published on GitHub on 15 May 2016, and later a new version of HEAAN with a bootstrapping algorithm was released. Currently, the latest version is Version 2.1.
  • 468
  • 23 Nov 2022
Topic Review
Introduction to the Metric System
The metric system was developed during the French Revolution to replace the various measures previously used in France. The metre (spelled "meter" in American English) is the unit of length in the metric system and was originally based on the dimensions of the earth, as far as it could be measured at the time. The litre (or in American English "liter"), is the unit of volume and was defined as one thousandth of a cubic metre. The metric unit of mass is the kilogram and it was defined as the mass of one litre of water. The metric system was, in the words of French philosopher Marquis de Condorcet, "for all people for all time". The metric system has names to cover different ranges of the same measure. Instead of using names based on the context of the measure, the metric system mainly uses names made by adding prefixes, such as kilo- or milli-, as decimal multipliers to the base unit names. Thus, one kilogram is 1000 grams and one kilometre is 1000 metres. During the nineteenth century the metric system was adopted by both the worldwide scientific community and many countries as the system of measurement. It therefore became truly international. Until 1875 the French government owned the prototype metre and kilogram, but in that year the Convention of the metre was signed and control of the standards relating to mass and length passed on to a trio of inter-government organisations. In 1960 the metric system was extensively revised to form the International System of Units, abbreviated to "SI".
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Topic Review
BlackBerry Enterprise Server
BlackBerry Enterprise Server designates the middleware software package that is part of the BlackBerry wireless platform supplied by BlackBerry Limited. The software and service connects to messaging and collaboration software (MDaemon Messaging Server, Microsoft Exchange, Lotus Domino, Novell GroupWise) on enterprise networks and redirects emails and synchronizes contacts and calendaring information between servers, desktop workstations, and mobile devices. Some third-party connectors exist, including Scalix, Zarafa, Zimbra, and the Google Apps BES Connector, although these are not supported by BlackBerry Limited. As of June 2018, BlackBerry Enterprise Server has been renamed to BlackBerry Unified Endpoint Manager (UEM).
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Topic Review
History and Implementations of ZFS
The history and implementations of ZFS covers the development of the ZFS file system. ZFS began as part of the Sun Microsystems Solaris operating system in 2001. Large parts of Solaris - including ZFS - were published under an open source license as OpenSolaris for around 5 years from 2005, before being placed under a closed source license when Oracle Corporation acquired Sun in 2009/2010. During 2005 - 2010, the open source version of ZFS was ported to Linux, Mac OS X (continued as MacZFS) and FreeBSD. In 2010, the illumos project forked a recent version of OpenSolaris, to continue its development as an open source project, including ZFS. In 2013 the co-ordination of open source ZFS moved to an umbrella organization, OpenZFS, which allowed any person or organization that wished to use the open source version of ZFS, to collaborate in developing and maintaining a single common version of ZFS. illumos remains very closely involved with OpenZFS. As of 2018, there are two main implementations of ZFS, both quite similar: Oracle's implementation, which is closed source and part of Solaris, and OpenZFS, which is widely used to provide ZFS on many unix-like operating systems.
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