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Topic Review
XCore Architecture
The XCore Architecture is a 32-bit RISC microprocessor architecture designed by XMOS. The architecture is designed to be used in multi-core processors for embedded systems. Each XCore executes up to eight concurrent threads, each thread having its own register set, and the architecture directly supports inter-thread and inter-core communication and various forms of thread scheduling. Two versions of the XCore architecture exist: the XS1 architecture and the XS2 architecture. Processors with the XS1 architecture include the XCore XS1-G4 and XCore XS1-L1. Processors with the XS2 architecture include xCORE-200. The architecture encodes instructions compactly, using 16 bits for frequently used instructions (with up to three operands) and 32 bits for less frequently used instructions (with up to 6 operands). Almost all instructions execute in a single cycle, and the architecture is event-driven in order to decouple the timings that a program needs to make from the execution speed of the program. A program will normally perform its computations and then wait for an event (e.g. a message, time, or external I/O event) before continuing.
  • 763
  • 24 Nov 2022
Topic Review
List of Folding@home Cores
The distributed-computing project Folding@home uses scientific computer programs, referred to as "cores" or "fahcores", to perform calculations. Folding@home's cores are based on modified and optimized versions of molecular simulation programs for calculation, including TINKER, GROMACS, AMBER, CPMD, SHARPEN, ProtoMol and Desmond. These variants are each given an arbitrary identifier (Core xx). While the same core can be used by various versions of the client, separating the core from the client enables the scientific methods to be updated automatically as needed without a client update.
  • 761
  • 29 Nov 2022
Topic Review
Taxonomy of Integrated Operation Centers
An Integrated Operation Center (IOC) is essential for efficient Smart Governance. An IOC is a centralized platform that integrates data from various sources and uses advanced analytics to provide real-time insights to help users make informed decisions. It acts as the central nervous system by integrating information and processes from various departments/sources to help officials manage and optimize city operations and infrastructure.
  • 762
  • 04 Aug 2023
Topic Review
Location-Aware Wi-Fi Authentication Scheme
Advanced wireless technology in Internet of Things (IoT) devices is increasing and facing various security threats. The authentication of IoT devices is the first line of defense for the wireless network. Especially in a Wi-Fi network, the existing authentication methods mainly use a password or digital certificate, these methods are inconvenient to manage due to certificate issuance or prone to be attacked because passwords are easily cracked. A location-aware authentication scheme was proposed, using smart contracts to ensure that IoT devices can securely perform Wi-Fi network authentication. The scheme adopts the concept of secondary authentication and consists of two phases: the registration phase, which is mainly designed to complete the generation of the public and private keys, and to link the device information with its related device information; the authentication phase, which is mainly designed to determine whether the requesting device is within a legal location range. The smart contract to ensure the credibility and irreparability of the authentication process. Analysis of the attack model and the attacks at different stages proves that this certification scheme is assured, and the simulation results show that the overhead introduced by this scheme is acceptable, this scheme can provide greater security for the Wi-Fi authentication of IoT devices.
  • 761
  • 01 Nov 2020
Topic Review
LiFi Network
Light Fidelity (LiFi), a new technology that uses light to transmit data as a high-speed wireless connection system from a wide spectrum of domains.
  • 760
  • 01 Dec 2021
Topic Review
IBM VisualAge
VisualAge was the name of a family of computer integrated development environments from IBM, which included support for multiple programming languages. VisualAge was first released in October 1993 and was discontinued on 30 April 2007 and its web page removed in September 2011. VisualAge was also marketed as “VisualAge Smalltalk”. IBM has stated that XL C/C++ is the 'follow-on' product to VisualAge.
  • 760
  • 09 Nov 2022
Biography
I. J. Good
Irving John ("I. J."; "Jack") Good (9 December 1916 – 5 April 2009)[1][2] was a British mathematician who worked as a cryptologist at Bletchley Park with Alan Turing. After the Second World War, Good continued to work with Turing on the design of computers and Bayesian statistics at the University of Manchester. Good moved to the United States where he was professor at Virginia Tech. He was b
  • 759
  • 24 Nov 2022
Topic Review
Forensic Serology
Forensic serology is the detection, identification, classification, and study of various bodily fluids such as blood, semen, saliva, and urine, and their relationship to a crime scene. A forensic serologist may also be involved in DNA analysis and bloodstain pattern analysis. Serology testing begins with presumptive tests which gives the analyst an indication that a specific bodily fluid may be present, but cannot completely confirm its presence. Following the presumptive tests, confirmatory tests are done on the same sample to confirm what the unknown substance actually is.
  • 758
  • 25 Oct 2022
Topic Review
Mathematics Problems Solving
Mathematics problems solving (MPS) has been considered for decades as the centre of mathematics teaching, as it demonstrates the ability to analyse, understand, reason and apply. At the same time, it is also considered to be specific content when highlighting it as a basic competence that students should acquire.
  • 758
  • 12 Nov 2021
Topic Review
Optimal Interpolation for infrared satellite data
Thermal infrared remote sensing measurements are blinded to surface emissions under cloudiness because infrared sensors cannot penetrate thick cloud layers. Therefore, surface and atmospheric parameters can be retrieved only in clear sky conditions giving origin to spatial fields flagged with missing pieces of information. Motivated by this we present a methodology to retrieve missing values of some interesting geophysical variables retrieved from spatially scattered infrared satellite observations in order to yield level 3 (L3), regularly gridded, data. The technique is based on a 2-Dimensional (2D) Optimal Interpolation (OI) scheme. The goodness of the approach has been tested on 15-min temporal resolution Spinning Enhanced Visible and Infrared Imager (SEVIRI) emissivity and surface temperature (ST) products over South Italy (land and sea), on Infrared Atmospheric Sounding Interferometer (IASI) atmospheric ammonia (NH3) concentration over North Italy and carbon monoxide (CO), sulfur dioxide (SO2) and NH3 concentrations over China. Sea surface temperature (SST) retrievals have been compared with gridded data from MODIS (Moderate-resolution Imaging Spectroradiometer) observations. For gases concentration, we have considered data from 3 different emission inventories, that is, Emissions Database for Global Atmospheric Research v3.4.2 (EDGARv3.4.2), the Regional Emission inventory in ASiav3.1 (REASv3.1) and MarcoPolov0.1, plus an independent study.
  • 758
  • 30 Oct 2020
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