Search results for "access"

A Watermarking of Medical Image : New Approach Based On "Multi-Layer" Method

2011

In order to contribute to security sharing and transmission of medical images, this paper propose a new approach for Watermarking image based on the techniques of Code Division Multiple Access (CDMA), Discrete Wavelet transform (DWT) and Error Correcting Code (ECC). The motivation of this approach is to improve the quantity of data integration with the conservation of the image visual quality. Therefore, this work permits to the user the capacity to correct the possible alterations if it exists. IRM and Echographic medical image are used to experiment this approach.

A block access unit for 2D memory access

2007

Many of the coding tools in the H.264/AVC video coding standard are based on 2D processing resulting in rowwise and column-wise memory accesses starting from arbitrary memory addresses. This paper discusses a low-cost hardware realization of these accesses on sub-word parallel processors. The proposed block access unit is placed between the processor and memory. It supports unaligned 2D block accesses according to several 2D access patterns. The 2D block accesses are pipelinable and they result in minimum number of memory accesses required to deliver the desired data.

Analyzing the Energy Efficiency of the Memory Subsystem in Multicore Processors

2014

In this paper we analyze the energy overhead incurred when operating with data stored in different levels of the memory subsystem (cache levels and DDR chips) of current multicore architectures. Our approach builds upon servet, a portable framework for the memory characterization of multicore processors, extending this suite with a power-related test that, when applied to a platform equipped with a power measurement mechanism, provides information on the efficiency of memory energy usage. As additional contributions, i) we provide a complete experimental study of the impact that the CPU performance states (also known as P-states) exert on the memory energy efficiency of a collection of rece…

Synaptic Scaling Enables Dynamically Distinct Short- and Long-Term Memory Formation

2013

Memory storage in the brain relies on mechanisms acting on time scales from minutes, for long-term synaptic potentiation, to days, for memory consolidation. During such processes, neural circuits distinguish synapses relevant for forming a long-term storage, which are consolidated, from synapses of short-term storage, which fade. How time scale integration and synaptic differentiation is simultaneously achieved remains unclear. Here we show that synaptic scaling – a slow process usually associated with the maintenance of activity homeostasis – combined with synaptic plasticity may simultaneously achieve both, thereby providing a natural separation of short- from long-term storage. The inter…

State of Training, Clinical Services, and Research on Dual Disorders Across France, India, Israel, and Spain.

2016

This article overviews training, clinical services, and research on dual disorders across four countries: France, India, Israel, and Spain.The current dual disorders systems in each of the four countries were reviewed, with a focus on strengths and limitations of each.In France, psychiatric care occurs within the public health care system and involves little training of medical graduates for managing dual disorders. Special courses and forums for specialists have recently started to meet the growing interest of physicians in learning how to manage dual disorders. The Indian health care system grapples with a large treatment gap for mental disorders, and while some treatment services for dua…

Detection of Candidatus Neoehrlichia mikurensis in Norway up to the northern limit of Ixodes ricinus distribution using a novel real time PCR test ta…

2019

Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License, which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. Background Candidatus Neoehrlichia mikurensis is an emerging tick-borne pathogen. It is widely distributed in Ixodes ricinus ticks in Europe, but knowledge of its distribution in Norway, where I. ricinus reaches its northern limit, is limited. In this study we have developed a real time PCR test for Ca. N. mikurensis and used it to invest…

Drug Resistance in Salmonella enterica ser. Typhimurium Bloodstream Infection, Malawi

2014

To the Editor: Salmonella enterica serotype Typhimurium is one of the most common causes of bloodstream infection in sub-Saharan Africa (1). Among adults, the principal risk factor for invasive nontyphoidal Salmonella (iNTS) disease is advanced HIV infection; up to 44% of HIV-infected patients experience bacteremic recurrence through recrudescence of the original infection (2,3). Epidemics of iNTS disease in sub-Saharan Africa have been associated with a novel genotype of S. enterica ser. Typhimurium of multilocus sequence type (ST) 313 that is rarely seen outside the region and is associated with multidrug resistance (MDR) to chloramphenicol, cotrimoxazole, and ampicillin (4,5). As a conse…

Los convenios internacionales y la promoción internacional del turismo sostenible

2020

Tourism has become one of the world’s most thriving industries and is a major source of environmental degradation. Therefore, since the 1992 United Nations Conference on Environment and Development, the international community has adopted several international conventions at the sub-regional and global levels aimed at promoting the sustainable development of tourism. The latest manifestation of this common concern has been the adoption in September 2019 of the Framework Convention on Tourism Ethics, which aims to give new impetus to international and domestic efforts towards responsible, sustainable and accessible tourism. El turismo se ha convertido actualmente en una de las industrias más…

Microsoft Access

2008

Natural emotion: progetti di itinerari naturalistici e nuovi accessi al patrimonio archeologico di Tindari

2019

The exceptional orographic and natural conditions, together with the cultural and patrimonial ones, of our territory have become the landscape of relations between the spaces where silence, slowdown and acceleration define the urban and human imagination of the territories of the very different minor centers among them by topographical location, by cultural and linguistic traditions and specificities. What future for the smaller centers? This is one of the questions of the contribution that it intends to face closely the role of the architectural project in the fragile territory of the minor centers where it is possible to find the constants in the critical issues of the participants that c…