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Le Moyen

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ISBN: 9791035101404 Year: DOI: 10.4000/books.psorbonne.28785 Language: French
Publisher: Éditions de la Sorbonne
Subject: History
Added to DOAB on : 2019-12-06 13:15:42
License: OpenEdition Licence for Books

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Le Moyen Âge dans le texte explore différentes facettes de la « nouvelle histoire textuelle » qui s’est imposée en histoire médiévale ces trente dernières années. Le livre reflète un cycle d’ateliers où se sont confrontés pendant cinq ans des chercheurs issus du Laboratoire de médiévistique occidentale de Paris (LAMOP), de France et de l’étranger, de l’Angleterre au Japon, dans une approche interdisciplinaire mettant en contact historiens, spécialistes de la littérature, linguistes et philologues. La nouvelle histoire textuelle a révolutionné le champ de l’histoire médiévale en interrogeant toutes les dimensions de la source-texte, conçue non plus comme une évidence, mais comme le terrain d’une enquête, quantitative et qualitative, devant sans cesse être renouvelée. Comment articuler les connaissances auxiliaires nécessaires à l’exploration historique du texte ? Quels jeux d’échelles adopter, et quelle philosophie de rapport à la source ? Comment replacer les textes dans leurs sociétés de création ? Cinq angles d’attaque sont présentés, permettant de réfléchir à ces problèmes : les enjeux de l’histoire des collections textuelles ; les jeux de code-switching et d’oscillation linguistique ; la Bible en tant qu’objet d’histoire textuelle ; l’absence du texte comme défi à la recherche ; enfin les différentes approches européennes du concept d’écriture pragmatique.

Keywords

code-switching

Code-switching Between Structural and Sociolinguistic Perspectives

Authors: ---
ISBN: 9783110346879 9783110343540 9783110383942 Year: Pages: 328 DOI: 10.1515/9783110346879 Language: English
Publisher: De Gruyter Grant: FP7 Ideas: European Research Council
Subject: Linguistics
Added to DOAB on : 2019-10-02 11:21:07

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This volume brings together linguistic, psycholinguistic, and sociolinguistic perspectives on code-switching. Featuring new data from five continents and languages with a large range of linguistic affiliations, the contributions all address the role of social factors in determining the forms and outcomes of code-switching. This book is a significant addition to the empirical and theoretical foundations of the study of code-switching.

Multitasking: Executive Functioning in Dual-Task and Task Switching Situations

Authors: --- ---
Book Series: Frontiers Research Topics ISSN: 16648714 ISBN: 9782889454532 Year: Pages: 196 DOI: 10.3389/978-2-88945-453-2 Language: English
Publisher: Frontiers Media SA
Subject: Science (General) --- Psychology
Added to DOAB on : 2018-11-16 17:17:57
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Multitasking refers to performance of multiple tasks. The most prominent types of multitasking are situations including either temporal overlap of the execution of multiple tasks (i.e., dual tasking) or executing multiple tasks in varying sequences (i.e., task switching). In the literature, numerous attempts have aimed at theorizing about the specific characteristics of executive functions that control interference between simultaneously and/or sequentially active component of task-sets in these situations. However, these approaches have been rather vague regarding explanatory concepts (e.g., task-set inhibition, preparation, shielding, capacity limitation), widely lacking theories on detailed mechanisms and/ or empirical evidence for specific subcomponents. The present research topic aims at providing a selection of contributions on the details of executive functioning in dual-task and task switching situations. The contributions specify these executive functions by focusing on (1) fractionating assumed mechanisms into constituent subcomponents, (2) their variations by age or in clinical subpopulations, and/ or (3) their plasticity as a response to practice and training.

Cellular and Phenotypic Plasticity in Cancer

Authors: --- --- ---
Book Series: Frontiers Research Topics ISSN: 16648714 ISBN: 9782889196623 Year: Pages: 77 DOI: 10.3389/978-2-88919-662-3 Language: English
Publisher: Frontiers Media SA
Subject: Medicine (General) --- Oncology
Added to DOAB on : 2016-08-16 10:34:25
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The process of Epithelial-Mesenchymal-Transition (EMT) is known to result in a phenotype change in cells from a proliferative state to a more invasive state. EMT has been reported to drive the metastatic spread of various cancers and has also been associated with drug resistance to cytotoxics and targeted therapeutics. Recently phenotype switching akin to EMT has been reported in non-epithelial cancers such as metastatic melanoma. This process involves changes in EMT-Transcription Factors (EMT-TFs), suggesting that phenotype-switching may be common to several tumour types. It remains unclear as to whether the presence of both Epilthelial-like and Mesenchymal-like cells are a pre-requisite for phenotype switching within a tumour, how this heterogeneity is regulated, and if alteration of cell phenotype is sufficient to mediate migratory changes, or whether drivers of cell migration result in an associated phenotype switch in cancer cells. Similarly it has yet to be clarified if cells in an altered phenotype can be refractory to drug therapy or whether mediators of drug resistance induce a concurrent phenotypic change. Little is known today about the underlying genetic, epigenetic and transient changes that accompany this phenotypic switch and about the role for the tumor micro-environment in influencing it. Hence this is currently an area of speculation and keen interest in the Oncology field with wide-ranging translational implications. In this Frontiers Research Topic, we discuss our current understanding of these concepts in various cancer types including breast cancer, colorectal cancer and metastatic melanoma. This topic covers how these processes of cellular and phenotypic plasticity are regulated and how they relate to cancer initiation, progression, dormancy, metastases and response to cytotoxics or targeted therapies.

Nonlinear resonators for all-optical signal processing

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Book Series: Karlsruhe Series in Photonics & Communications ISSN: 18651100 ISBN: 9783866441507 Year: Volume: 2 Pages: XX,126 p. DOI: 10.5445/KSP/1000006998 Language: ENGLISH
Publisher: KIT Scientific Publishing
Subject: Technology (General)
Added to DOAB on : 2019-07-30 20:01:58
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All-optical signal processing will be used in future communication networks. We discuss a new and generic scheme for such devices. The basic configuration comprises an asymmetric resonator within an active or passive nonlinear medium. This arrangement enables all-optical flip-flop operation and switching with a reduced threshold. In addition, a novel optical isolator concept based on resonator asymmetries is is introduced. The model is also applicable to photonic crystal based resonators.

Examining auditory selective attention : From dichotic towards realistic environments

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Book Series: Aachener Beiträge zur Akustik ISBN: 9783832551018 Year: Volume: 33 Pages: 177 DOI: 10.30819/5101
Publisher: Logos Verlag Berlin GmbH
Subject: Electrical and Nuclear Engineering
Added to DOAB on : 2020-09-28 15:00:25
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Cellular Entry of Binary and Pore-Forming Bacterial Toxins

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ISBN: 9783038427049 9783038427032 Year: Pages: 128 DOI: 10.3390/books978-3-03842-703-2 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Biology
Added to DOAB on : 2018-02-08 13:26:54
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Bridging cellular membranes is a key step in the pathogenic action of both binary and pore-forming bacterial toxins. The former use their translocation domains, containing various structural motifs, to ensure efficient delivery of the toxic component into the host cell, while the latter act on the cellular membrane itself. In either case, the integrity of the membrane is compromised via targeted protein–lipid and protein–protein interactions triggered by specific signals, such as proteolytic cleavage or endosomal acidification.This Special Issue presents recent advances in characterizing functional, structural and thermodynamic aspects of the conformational switching and membrane interactions involved in the cellular entry of bacterial protein toxins. Deciphering the physicochemical principles underlying these processes is also a prerequisite for the use of protein engineering to develop toxin-based molecular vehicles capable of targeted delivery of therapeutic agents to tumors and other diseased tissues.

Advanced Memristor Modeling: Memristor Circuits and Networks

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ISBN: 9783038971047 9783038971030 Year: Pages: 172 DOI: doi.org/10.3390/books978-3-03897-103-0 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Technology (General)
Added to DOAB on : 2019-05-22 16:48:48
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The investigation of new memory schemes, neural networks, computer systems, and many other improved electronic devices is very important for the future generation’s electronic circuits and for their widespread application in all the areas of industry. In this respect, the analysis of new efficient and advanced electronic elements and circuits is an essential field of highly developed electrical and electronic engineering. The resistance-switching phenomenon, observed in many amorphous oxides, has been investigated since 1970 and is a promising technology for constructing new electronic memories. It has been established that such oxide materials have the ability for changing their conductance in accordance with the applied voltage, and for memorizing their state for long-time interval. Similar behaviour has been predicted for the memristor element by Leon Chua in 1971. The memristor is proposed in accordance with symmetry considerations and the relationships between the four basic electric quantities—electric current i, voltage v, charge q, and magnetic flux Ψ. The memristor is an essential passive one-port element together with the resistor, inductor, and capacitor. The Williams HP research group has made a link between resistive switching devices and the memristor proposed by Chua. A number of scientific papers related to memristors and memristor devices have been issued, and several memristor models have been proposed. The memristor is a highly nonlinear component. It relates the electric charge q and the flux linkage, expressed as a time integral of the voltage. The memristor element has the important capability for remembering the electric charge passed through its cross-section and its respective resistance, when the electrical signals are switched off. Due to its nano-scale dimensions, non-volatility, and memorizing properties, the memristor is a sound potential candidate for application in computer high-density memories, artificial neural networks, and many other electronic devices.

Individual Variation and the Bilingual Advantage - Factors that Modulate the Effect of Bilingualism on Cognitive Control and Cognitive Reserve

Authors: --- ---
ISBN: 9783039281046 9783039281053 Year: Pages: 264 DOI: 10.3390/books978-3-03928-105-3 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Psychology
Added to DOAB on : 2020-04-07 23:07:08
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The number of bilingual and multilingual speakers around the world is steadily growing, leading to the questions: How do bilinguals manage two or more language systems in their daily interactions, and how does being bilingual/multilingual affect brain functioning and vice versa? Previous research has shown that cognitive control plays a key role in bilingual language management. This hypothesis is further supported by the fact that foreign languages have been found to affect not only the expected linguistic domains, but surprisingly, other non-linguistic domains such as cognitive control, attention, inhibition, and working memory. Somehow, learning languages seems to affect executive/brain functioning. In the literature, this is referred to as the bilingual advantage, meaning that people who learn two or more languages seem to outperform monolinguals in executive functioning skills. In this Special Issue, we first present studies that investigate the bilingual advantage. We also go one step further, by focusing on factors that modulate the effect of bilingualism on cognitive control. In the second, smaller part of our Special Issue, we focus on the cognitive reserve hypothesis with the aim of addressing the following questions: Does the daily use of two or more languages protect the aging individual against cognitive decline? Does lifelong bilingualism protect against brain diseases, such as dementia, later in life?

Keywords

multilingualism --- bilingual advantage --- Stroop task --- cognates --- orthographic neighbors --- cognitive control --- controlled language processing --- German as a foreign language --- bilingual advantage --- bilingualism --- cognitive control --- individual differences --- longitudinal studies --- methodology --- bilingualism --- bilingual experiences --- executive functioning --- language proficiency --- language use --- language switching --- interactional contexts --- domain-specific self-concept --- academic achievement --- metacognition --- executive functions --- multilingual children --- reading comprehension --- reading fluency --- spelling --- bilingual language dominance --- Stimulus-Stimulus inhibition --- Stimulus-Response inhibition --- speed-accuracy trade-off --- attention network --- alerting --- orienting --- executive functioning --- interpreting --- translation --- bilingualism --- inhibition --- bilingualism --- early childhood --- attention --- cognitive flexibility --- aging --- bilingualism --- cognitive decline --- cognitive reserve hypothesis --- dementia --- onset --- bilingual advantage --- executive control --- language switching --- shifting --- inhibition --- self-reports --- bilingualism --- Attentional Control Theory --- executive function --- trait anxiety --- rumination --- inhibitory control --- eye tracking --- multilingualism --- cognitive abilities --- inhibition --- switching --- disengagement of attention --- executive function --- cognitive effects --- bilingual advantage --- modulating factors --- bilingualism --- aging --- third-age language learning

Memristors for Neuromorphic Circuits and Artificial Intelligence Applications

Author:
ISBN: 9783039285761 / 9783039285778 Year: Pages: 244 DOI: 10.3390/books978-3-03928-577-8 Language: eng
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Technology (General) --- General and Civil Engineering
Added to DOAB on : 2020-06-09 16:38:57
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Artificial Intelligence (AI) has found many applications in the past decade due to the ever increasing computing power. Artificial Neural Networks are inspired in the brain structure and consist in the interconnection of artificial neurons through artificial synapses. Training these systems requires huge amounts of data and, after the network is trained, it can recognize unforeseen data and provide useful information. The so-called Spiking Neural Networks behave similarly to how the brain functions and are very energy efficient. Up to this moment, both spiking and conventional neural networks have been implemented in software programs running on conventional computing units. However, this approach requires high computing power, a large physical space and is energy inefficient. Thus, there is an increasing interest in developing AI tools directly implemented in hardware. The first hardware demonstrations have been based on CMOS circuits for neurons and specific communication protocols for synapses. However, to further increase training speed and energy efficiency while decreasing system size, the combination of CMOS neurons with memristor synapses is being explored. The memristor is a resistor with memory which behaves similarly to biological synapses. This book explores the state-of-the-art of neuromorphic circuits implementing neural networks with memristors for AI applications.

Keywords

memristor --- artificial synapse --- neuromorphic computing --- memristor-CMOS hybrid circuit --- temporal pooling --- sensory and hippocampal responses --- cortical neurons --- hierarchical temporal memory --- neocortex --- memristor-CMOS hybrid circuit --- defect-tolerant spatial pooling --- boost-factor adjustment --- memristor crossbar --- neuromorphic hardware --- memristor --- compact model --- emulator --- neuromorphic --- synapse --- STDP --- pavlov --- neuromorphic systems --- spiking neural networks --- memristors --- spike-timing-dependent plasticity --- RRAM --- vertical RRAM --- neuromorphics --- neural network hardware --- reinforcement learning --- AI --- neuromorphic computing --- multiscale modeling --- memristor --- optimization --- RRAM --- simulation --- memristors --- neuromorphic engineering --- OxRAM --- self-organization maps --- synaptic device --- memristor --- neuromorphic computing --- artificial intelligence --- hardware-based deep learning ICs --- circuit design --- memristor --- RRAM --- variability --- time series modeling --- autocovariance --- graphene oxide --- laser --- memristor --- crossbar array --- neuromorphic computing --- wire resistance --- synaptic weight --- character recognition --- neuromorphic computing --- Flash memories --- memristive devices --- resistive switching --- synaptic plasticity --- artificial neural network --- spiking neural network --- pattern recognition --- strongly correlated oxides --- resistive switching --- neuromorphic computing --- transistor-like devices --- artificial intelligence --- neural networks --- resistive switching --- memristive devices --- deep learning networks --- spiking neural networks --- electronic synapses --- crossbar array --- pattern recognition

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