Browsing MIT Open Access Articles by Title
Now showing items 2455-2474 of 55846
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ARCc: A case for an architecturally redundant cache-coherence architecture for large multicores
(Institute of Electrical and Electronics Engineers, 2011-10)This paper proposes an architecturally redundant cache-coherence architecture (ARCc) that combines the directory and shared-NUCA based coherence protocols to improve performance, energy and dependability. Both coherence ... -
Archaeal and bacterial assemblages in the Oxygen Minimum Zone of the upwelling ecosystem off Central Chile as determined by organic biomarkers
(SciELO Comision Nacional de Investigacion Cientifica Y Tecnologica (CONICYT), 2015-06)Organic biomarkers were used to investigate the infl uence of seasonal changes in oxygenation and water chemistry on the distribution of archaea and bacteria in the water column and surface sediments of the continental ... -
The archaeal origins of the eukaryotic translational system
(Hindawi Publishing Corporation, 2005-11)Among the 78 eukaryotic ribosomal proteins, eleven are specific to Eukarya, 33 are common only to Archaea and Eukarya and 34 are homologous (at least in part) to those of both Bacteria and Archaea. Several other translational ... -
Archaeological Arsenical Bronzes and Equilibrium in the As-Cu System
(Springer Science and Business Media LLC, 2018-07)Understanding the effects of impurities, segregation, undercooling, and solidification velocity is necessary to reconstruct prehistoric As-Cu alloy manufacturing processes and practices. Moreover, these alloys often contain ... -
The Archaeology of Pig Domestication in Eurasia
(Springer Science and Business Media LLC, 2019-12)The multifaceted behavioral and ecological flexibility of pigs and wild boar (Sus scrofa) makes study of their domestication both complex and of broad anthropological significance. While recognizing contextual contingency, ... -
The Archean origin of oxygenic photosynthesis and extant cyanobacterial lineages
(The Royal Society, 2021)<jats:p>The record of the coevolution of oxygenic phototrophs and the environment is preserved in three forms: genomes of modern organisms, diverse geochemical signals of surface oxidation and diagnostic Proterozoic ... -
Architected cellular ceramics with tailored stiffness via direct foam writing
(National Academy of Sciences (U.S.), 2017-02)Hierarchical cellular structures are ubiquitous in nature because of their low-density, high-specific properties, and multifunctionality. Inspired by these systems, we created lightweight ceramic architectures composed of ... -
Architecting complex international science, technology and innovation partnerships (CISTIPs): A study of four global MIT collaborations
(Elsevier, 2015-12)Complex international partnerships have emerged as a policy instrument of choice for many governments to build domestic capacity in science, technology and innovation with the help of foreign partners. At present, these ... -
Architecting Information Security Services for Federated Satellite Systems
(American Institute of Aeronautics and Astronautics, 2016-11)This paper investigates the provision of information security services in federated satellite systems. The discussion is initiated by describing possible threats that the system faces, as well as the specific security ... -
Architecting space communication networks under mission demand uncertainty
(Institute of Electrical and Electronics Engineers (IEEE), 2015-06)NASAs Space Network has been a successful program that has provided reliable communication and navigation services for three decades. As the third generation of satellites is being launched, alternatives to the current ... -
Architecting the ground segment of an optical space communication network
(Institute of Electrical and Electronics Engineers (IEEE), 2016-03)Optical communications are envisioned as a key technology for space communication in the near future. This transition to optical terminals is being pushed by the higher data volume demand of certain missions (i.e.: missions ... -
Architecting the System of Systems Enterprise: Enabling Constructs and Methods from the Field of Engineering Systems
(Institute of Electrical and Electronics Engineers, 2009-04)Engineering systems is a field of scholarship focused on developing fundamental theories and methods to address the challenges of large-scale complex systems in context of their socio-technical environments. The authors ... -
Architectural options and optimization of suborbital space tourism vehicles
(IEEE, 2018-03)© 2018 IEEE. Since the creation of the Ansari X-Prize, a significant technical and commercial interest has developed in suborbital space tourism. An obvious question arises: what system architecture will provide the best ... -
Architectural options and optimization of suborbital space tourism vehicles
(IEEE, 2018-03)© 2018 IEEE. Since the creation of the Ansari X-Prize, a significant technical and commercial interest has developed in suborbital space tourism. An obvious question arises: what system architecture will provide the best ... -
Architectural transitions in Vibrio cholerae biofilms at single-cell resolution
(National Academy of Sciences (U.S.), 2016-04)Many bacterial species colonize surfaces and form dense 3D structures, known as biofilms, which are highly tolerant to antibiotics and constitute one of the major forms of bacterial biomass on Earth. Bacterial biofilms ... -
Architecture and assembly of the archaeal Cdc48*20S proteasome
(National Academy of Sciences (U.S.), 2014-04)ATP-dependent proteases maintain protein quality control and regulate diverse intracellular functions. Proteasomes are primarily responsible for these tasks in the archaeal and eukaryotic domains of life. Even the simplest ... -
The architecture and biological performance of drug-loaded LbL nanoparticles
(Elsevier, 2013-04)Layer-by-Layer (LbL) nanoparticles are an emerging class of therapeutic carriers that afford precise control over key design parameters that facilitate improved drug and carrier pharmacokinetics, and enhanced molecular-targeting ... -
Architecture and System Analysis of Microgrids with Peer-to-Peer Electricity Sharing to Create a Marketplace which Enables Energy Access
(2015-06)More than 1.3 billion people in the world lack access to electricity and this energy poverty is a major barrier to human development. This paper describes a new concept of peer-to-peer electricity sharing which creates a ... -
Architecture for Directed Transport of Superparamagnetic Microbeads in a Magnetic Domain Wall Routing Network
(Nature Publishing Group, 2017-08)Directed transport of biological species across the surface of a substrate is essential for realizing lab-on-chip technologies. Approaches that utilize localized magnetic fields to manipulate magnetic particles carrying ...