Search results for "Grit"

Signal integrity studies at optical multiplexer board for TileCal system

2007

6 pages.-- ISI Article Identifier: 000253651800006

Novel biomass fly ash-based geopolymeric mortars using lime slaker grits as aggregate for applications in construction: Influence of granulometry and…

2019

Abstract This work discusses the influence of the aggregate granulometry and the binder/aggregate ratio on the engineering properties of novel green geopolymeric mortars. Two wastes generated by a Portuguese Kraft pulp industry are employed to manufacture the material: lime slaker grits (used as aggregate) and biomass fly ash (to partially replace the metakaolin − 70 wt% substitution). The novel geopolymeric mortars could find innovative applications as sustainable construction materials. The studied mix design foresees the use of several grits granulometric ranges and ratios binder/aggregate to discuss workability, water sorptivity, and mechanical performance of the novel mortars. To date,…

A study of the human rod and cone electroretinogram a-wave component

2009

The study of the electrical response of the retina to a luminous stimulus is one of the main fields of research in ocular electrophysiology. The features of the first component (a-wave) of the retinal response reflect the functional integrity of the two populations of photoreceptors: rods and cones. We fit the a-wave for pathological subjects with functions that account for possible mechanisms governing the kinetics of the photoreceptors. The paper extends a previous analysis, carried out for normal subjects, in which both populations are active, to patients affected by two particular diseases that reduce the working populations to only one. The pathologies investigated are Achromatopsia, a…

Analysis of the thermomechanical behavior of the IFMIF bayonet target assembly under design loading scenarios

2015

In the framework of the IFMIF Engineering Validation and Engineering Design Activities (IFMIF/EVEDA) phase, ENEA is responsible for the design of the European concept of the IFMIF lithium target system which foresees the possibility to periodically replace only the most irradiated and thus critical component (i.e., the backplate) while continuing to operate the rest of the target for a longer period (the so-called bayonet backplate concept). In this work, the results of the steady state thermomechanical analysis of the IFMIF bayonet target assembly under two different design loading scenarios (a "hot" scenario and a "cold" scenario) are briefly reported highlighting the relevant indications…

A normative ‘due process’ in the creation of States through secession

2006

The choice and/or the balancing between effectivess and legality in the creation of States is, today, one of the most hotly debated issues in the international legal scholarship. Should a state-like entity formed in breach of the peremptory norm prohibiting the use of force or of the principle of self-determination (not) be considered as a State for the purposes of international law? The answer differs according to what theoretical premises are adopted. For those who believe that the State is a social person, and its creation basically a historical occurrence, the law cannot cancel its very existence. On the other hand, if State-creation is also a matter of law, one might agree that “[a]n a…

Excitability regulation in the dorsomedial prefrontal cortex during sustained instructed fear responses: a TMS-EEG study

2018

AbstractBackgroundThreat detection is essential for protecting individuals from precarious situations. Early studies suggested a network of amygdala, limbic regions and dorsomedial prefrontal cortex (dmPFC) involved in fear processing. Excitability regulation in the dmPFC might be crucial for physiological fear processing, while an abnormal excitability pattern could lead to mental illness. Non-invasive paradigms to measure excitability regulation during fear processing in humans are missing.MethodsWe adapted an experimental approach of excitability characterization using electroencephalography (EEG) recordings and transcranial magnetic stimulation (TMS) over the dmPFC during an instructed …

Trust-enhanced data integrity model

2012

In this paper we propose an enhancement of data integrity model. The proposed model is based on the idea of Biba integrity model but uses more elaborated integrity measurements. Since integrity can be seen as “trustworthiness of data and resources”, we propose to utilize trustworthiness opinions from subjective logic and express levels of integrity as levels of trustworthiness.

IL VALORE PERCEPITO DAL TURISTA NELL’ESPERIENZA AGRITURISTICA: COSTRUZIONE DI UN INDICATORE SINTETICO

Secure, dependable and publicly verifiable distributed data storage in unattended wireless sensor networks

2010

Published version of an article from the journal : Science in China, Series F: Information Sciences. The original publication is available at Spingerlink. http://dx.doi.org/10.1007/s11432-010-0096-7 In unattended wireless sensor networks (UWSNs), sensed data are stored locally or at designated nodes and further accessed by authorized collectors on demand. This paradigm is motivated by certain scenarios where historical or digest data (e.g., average temperature in a day), instead of real-time data, are of interest. The data are not instantly forwarded to a central sink upon sensing, thereby saving communication energy for transmission. Such a paradigm can also improve data survivability by m…

Agritourism and local development: A methodology for assessing the role of public contributions in the creation of competitive advantage

2018

Abstract Agriculture has been an economic mainstay of countries throughout history. Recently, its importance and essential role in local and regional growth and development have also received due acknowledgment. However, agritourism entrepreneurs often lack the necessary means, when relying only on their own funds alone. For these reasons, targeted aid measures are provided at the regional, national and European levels, provided they fulfill specified subjective and objective eligibility criteria. This investigation aims at understanding the rationale, if any, according to which the Public Administration allots such contributions. To this end, a two-tiered analysis was conducted on the data…