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Topic Review
Apache XMLBeans (Retired)
XMLBeans is a Java-to-XML binding framework which is part of the Apache Software Foundation XML project.
  • 671
  • 07 Nov 2022
Topic Review
Foreshadow (Security Vulnerability)
Foreshadow (known as L1 Terminal Fault (L1TF) by Intel) is a vulnerability that affects modern microprocessors that was first discovered by two independent teams of researchers in January 2018, but was first disclosed to the public on 14 August 2018. The vulnerability is a speculative execution attack on Intel processors that may result in the disclosure of sensitive information stored in personal computers and third-party clouds. There are two versions: the first version (original/Foreshadow) (CVE-2018-3615) targets data from SGX enclaves; and the second version (next-generation/Foreshadow-NG) (CVE-2018-3620 and CVE-2018-3646) targets virtual machines (VMs), hypervisors (VMM), operating systems (OS) kernel memory, and System Management Mode (SMM) memory. A listing of affected Intel hardware has been posted. Foreshadow is similar to the Spectre security vulnerabilities discovered earlier to affect Intel and AMD chips, and the Meltdown vulnerability that also affected Intel. However, AMD products, according to AMD, are not affected by the Foreshadow security flaws. According to one expert, " lets malicious software break into secure areas that even the Spectre and Meltdown flaws couldn't crack". Nonetheless, one of the variants of Foreshadow goes beyond Intel chips with SGX technology, and affects "all [Intel] Core processors built over the last seven years". Foreshadow may be very difficult to exploit, and there seems to be no evidence to date (15 August 2018) of any serious hacking involving the Foreshadow vulnerabilities. Nevertheless, applying software patches may help alleviate some concern, although the balance between security and performance may be a worthy consideration. Companies performing cloud computing may see a significant decrease in their overall computing power; individuals, however, may not likely see any performance impact, according to researchers. The real fix, according to Intel, is by replacing today's processors. Intel further states, "These changes begin with our next-generation Intel Xeon Scalable processors (code-named Cascade Lake), as well as new client processors expected to launch later this year ." On 16 August 2018, researchers presented technical details of the Foreshadow security vulnerabilities in a seminar, and publication, entitled "Foreshadow: Extracting the Keys to the Intel SGX Kingdom with Transient Out-of-Order Execution" at a USENIX security conference.
  • 670
  • 25 Oct 2022
Biography
Grigore Rosu
Grigore Roșu is a computer science professor at the University of Illinois at Urbana-Champaign and a researcher in the Information Trust Institute.[1] He is known for his contributions in runtime verification, K framework,[2] matching logic,[3] and automated coinduction.[4] Rosu received a B.A. in Mathematics in 1995 and an M.S. in Fundamentals of Computing in 1996, both from the University
  • 668
  • 06 Dec 2022
Topic Review
Shadow of the Beast
Shadow of the Beast is a platform game developed by Reflections and published by Psygnosis in 1989. The original version was released for the Amiga, and was later ported to many other systems. The game was known for its graphics, with many colours on screen and up to twelve levels of parallax scrolling backdrops, and for its atmospheric score composed by David Whittaker that used high-quality instrument samples. It was followed by two sequels, Shadow of the Beast II in 1990 and Shadow of the Beast III in 1993. A remake was released for the PlayStation 4 in May 2016, and included the Amiga original.
  • 667
  • 14 Oct 2022
Topic Review
List of Mathematicians (B)
This is a list of mathematicians in alphabetical order beginning with 'B'.
  • 667
  • 31 Oct 2022
Topic Review
Sixth Term Examination Paper
Sixth Term Examination Papers in Mathematics, often referred to as STEP, are university admissions tests for undergraduate Mathematics courses developed by the University of Cambridge. STEP papers are typically taken post-interview, as part of a conditional offer of an undergraduate place. There are also a number of candidates who sit STEP papers as a challenge. The papers are designed to test ability to answer questions similar in style to undergraduate Mathematics. There are two official users of STEP Mathematics: the University of Cambridge and the University of Warwick. Candidates applying to study Mathematics or Computer Science with Mathematics at the University of Cambridge are required to take STEP papers as part of the terms of their conditional offer. In addition, other courses at Cambridge University with a large mathematics component, such as engineering occasionally require STEP. Candidates applying to study Mathematics or closely-related subjects at the University of Warwick can take step as part of their offer. A typical STEP offer for a candidate applying to read Mathematics at the University of Cambridge would be at least a grade 1 in both STEP2 and STEP 3. From 2019 some colleges may (depending on the individual applicant's circumstances) require a grade 1 in either STEP 1 or 2 , (or in both). Candidates applying to the University of Warwick to read Mathematics, or closely related subjects, can use a grade 1 from any STEP paper as part of their offer.
  • 666
  • 15 Nov 2022
Topic Review
Life Table
In actuarial science and demography, a life table (also called a mortality table or actuarial table) is a table which shows, for each age, what the probability is that a person of that age will die before their next birthday ("probability of death"). In other words, it represents the survivorship of people from a certain population. They can also be explained as a long-term mathematical way to measure a population's longevity. Tables have been created by demographers including Graunt, Reed and Merrell, Keyfitz, and Greville. There are two types of life tables used in actuarial science. The period life table represents mortality rates during a specific time period of a certain population. A cohort life table, often referred to as a generation life table, is used to represent the overall mortality rates of a certain population's entire lifetime. They must have had to be born during the same specific time interval. A cohort life table is more frequently used because it is able to make a prediction of any expected changes in mortality rates of a population in the future. This type of table also analyzes patterns in mortality rates that can be observed over time. Both of these types of life tables are created based on an actual population from the present, as well as an educated prediction of the experience of a population in the near future. In order to find the true life expectancy average, 100 years would need to pass and by then finding that data would be of no use as healthcare is continually advancing. Other life tables in historical demography may be based on historical records, although these often undercount infants and understate infant mortality, on comparison with other regions with better records, and on mathematical adjustments for varying mortality levels and life expectancies at birth. From this starting point, a number of inferences can be derived. Life tables are also used extensively in biology and epidemiology. An area that uses this tool is Social Security. It examines the mortality rates of all the people who have Social Security to decide which actions to take. The concept is also of importance in product life cycle management. All mortality tables are specific to environmental and life circumstances, and are used to probabilistically determine expected maximum age within those environmental conditions.
  • 663
  • 02 Nov 2022
Topic Review
Compositing
Compositing is the combining of visual elements from separate sources into single images, often to create the illusion that all those elements are parts of the same scene. Live-action shooting for compositing is variously called "chroma key", "blue screen", "green screen" and other names. Today, most, though not all, compositing is achieved through digital image manipulation. Pre-digital compositing techniques, however, go back as far as the trick films of Georges Méliès in the late 19th century, and some are still in use.
  • 663
  • 11 Nov 2022
Topic Review
Vibrotactile Feedback in Virtual Reality
While substantial progress in computer graphics and sound rendering has resulted in highly realistic visual and auditory experiences in virtual reality (VR), achieving genuine immersion, interactivity, and the stimulation of imagination necessitates the integration of realistic tactile experiences, often facilitated through haptic feedback. The incorporation of vibrotactile feedback in VR allows users to fully engage their sense of touch, enabling them to explore, grasp, and manipulate virtual objects as if they were interacting with them in the physical world.
  • 663
  • 22 Jan 2024
Topic Review
Gomocup
Gomocup is a worldwide tournament of artificial intelligences (AI) playing Gomoku and Renju. The tournament has been played since 2000 and takes place every year. As of 2016, it is the most famous and largest Gomoku AI tournament in the world, with around 40 participants from about 10 countries.
  • 662
  • 21 Oct 2022
Biography
Adam C. Siepel
Adam C. Siepel (born 1972) is an American computational biologist known for his research in comparative genomics and population genetics, particularly the development of statistical methods and software tools for identifying evolutionarily conserved sequences.[1][2][3][4] Siepel is currently Chair of the Simons Center for Quantitative Biology and Professor in the Watson School for Biological Sci
  • 662
  • 29 Dec 2022
Topic Review
NcRNAs in Human Diseases
The mammalian genome comprehends a small minority of genes that encode for proteins (barely 2% of the total genome in humans) and an immense majority of genes that are transcribed into RNA but not encoded for proteins (ncRNAs). These non-coding genes are intimately related to the expression regulation of protein-coding genes. The ncRNAs subtypes differ in their size, so there are long non-coding genes (lncRNAs) and other smaller ones, like microRNAs (miRNAs) and piwi-interacting RNAs (piRNAs). Due to their important role in the maintenance of cellular functioning, any deregulation of the expression profiles of these ncRNAs can dissemble in the development of different types of diseases, such as cancer, neurodegenerative, or cardiovascular disorders.
  • 661
  • 16 Mar 2021
Topic Review
Evaluating the Presence of Software-as-a-Medical-Device
SaMD is a growing trend within medical device innovation. In this work, we provide the first empirical analysis of SaMD. Within Australia, which relies heavily on importation of medical devices, SaMD shows a greater domestic production than other types of medical devices.
  • 659
  • 31 Aug 2021
Topic Review
Electrochemical RAM
Electrochemical Random-Access Memory (ECRAM) is a type of non-volatile memory (NVM) with multiple levels per cell (MLC) designed for deep learning analog acceleration. An ECRAM cell is a three-terminal device composed of a conductive channel, an insulating electrolyte, an ionic reservoir, and metal contacts. The resistance of the channel is modulated by ionic exchange at the interface between the channel and the electrolyte upon application of an electric field. The charge-transfer process allows both for state retention in the absence of applied power, and for programming of multiple distinct levels, both differentiating ECRAM operation from that of a field-effect transistor (FET). The write operation is deterministic and can result in symmetrical potentiation and depression, making ECRAM arrays attractive for acting as artificial synaptic weights in physical implementations of artificial neural networks (ANN). The technological challenges include open circuit potential (OCP) and semiconductor foundry compatibility associated with energy materials. Universities, government laboratories, and corporate research teams have contributed to the development of ECRAM for analog computing. Notably, Sandia National Laboratories designed a lithium-based cell inspired by solid-state battery materials, Stanford University built an organic proton-based cell, and International Business Machines (IBM) demonstrated in-memory selector-free parallel programming for a logistic regression task in an array of metal-oxide ECRAM designed for insertion in the back end of line (BEOL). In 2022, researchers at Massachusetts Institute of Technology built an inorganic, CMOS-compatible protonic technology that achieved near-ideal modulation characteristics using nanosecond fast pulses
  • 657
  • 18 Nov 2022
Biography
William H. Press
William Henry Press (born May 23, 1948) is an astrophysicist, theoretical physicist, computer scientist, and computational biologist. He is a member of the U.S. National Academy of Sciences, the American Academy of Arts and Sciences, and the Council on Foreign Relations. Other honors include the 1981 Helen B. Warner Prize for Astronomy.[1][2] Press has been a member of the JASON defense advisory
  • 655
  • 28 Nov 2022
Topic Review
Security of Transport Layer Security
This article discusses the security of the Transport Layer Security (TLS) internet protocol.
  • 653
  • 17 Oct 2022
Topic Review
H2O
H2O is open-source software for big-data analysis. It is produced by the company H2O.ai. H2O allows users to fit thousands of potential models as part of discovering patterns in data. The H2O software runs can be called from the statistical package R, Python, and other environments. It is used for exploring and analyzing datasets held in cloud computing systems and in the Apache Hadoop Distributed File System as well as in the conventional operating-systems Linux, macOS, and Microsoft Windows. The H2O software is written in Java, Python, and R. Its graphical-user interface is compatible with four browsers: Chrome, Safari, Firefox, and Internet Explorer.
  • 653
  • 30 Nov 2022
Topic Review
Sun Ray
The Sun Ray was a stateless thin client computer (and associated software) aimed at corporate environments, originally introduced by Sun Microsystems in September 1999 and discontinued by Oracle Corporation in 2014. It featured a smart card reader and several models featured an integrated flat panel display. The idea of a stateless desktop was a significant shift from, and the eventual successor to, Sun's earlier line of diskless Java-only desktops, the JavaStation.
  • 652
  • 10 Nov 2022
Topic Review
Clip (Command)
The clipboard is a buffer that some operating systems provide for short-term storage and transfer within and between application programs. The clipboard is usually temporary and unnamed, and its contents reside in the computer's RAM. The clipboard provides an application programming interface by which programs can specify cut, copy and paste operations. It is left to the program to define methods for the user to command these operations, which may include keybindings and menu selections. When an element is copied or cut, the clipboard must store enough information to enable a sensible result no matter where the element is pasted. Application programs may extend the clipboard functions that the operating system provides. A clipboard manager may give the user additional control over the clipboard. Specific clipboard semantics vary among operating systems, can also vary between versions of the same system, and can sometimes be changed by programs and by user preferences. Windows, Linux and macOS support a single clipboard transaction.
  • 651
  • 01 Nov 2022
Topic Review
PADICAT
PADICAT acronym for Patrimoni Digital de Catalunya, in Catalan; or Digital Heritage of Catalonia, in English, is the Web Archive of Catalonia. Created in 2005 by the Biblioteca de Catalunya, the public institution responsible for collecting, preserving and distributing the bibliographic heritage, and the digital heritage by extension. Has the technological collaboration of the Center for Scientific and Academic Services of Catalonia, (CESCA) for preserving and giving access to old versions of web pages published on the Internet. The Biblioteca de Catalunya, as the responsible of PADICAT, is member of the International Internet Preservation Consortium (IIPC).
  • 650
  • 08 Nov 2022
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