1,355,084 research outputs found
Using unified power format standard concepts for power-aware design and verification of systems-onchip at transaction level
No full textInternational audienceO. Mbarek, A. Pegatoquet and M. Auguin,
Adaptive HAPS Offloading: A Strategy for Supporting RAN During High Traffic Load
No full textHigh altitude platform stations (HAPS) have been
proposed to support terrestrial mobile networks, offering a
sustainable alternative to network densification. With their wide
coverage areas and green energy consumption model, HAPS
super macro base stations (SMBSs) are well suited to handle the
massive and dynamic mobile data traffic demand. This research
introduces an adaptive traffic offloading strategy that leverages
the capabilities of HAPS to support radio access network (RAN),
particularly during periods of high network demand. To enable
HAPS to effectively assist the RAN, it is crucial to accurately
predict which base stations (BSs) will experience high loads.
Precise forecasting of these demands is hence essential to ensure
timely and targeted offloading of traffic to the HAPS when and
where it is most needed. The proposed approach predicts and
manages loads by considering temporal and geographical factors.
At the core of this approach is the Q-learning update rule,
which is continuously used to refine offloading decisions and
flexibly adapt to changing conditions. Our simulation results
demonstrate that the proposed HAPS offloading approach is
effective in maintaining balanced loads in the terrestrial RAN
during peak periods, by dynamically adapting to the typical
traffic characteristics of different areas and to their evolution
over time
A Secured Data Processing Technique for Effective Utilization of Cloud Computing
No full textDigital humanities require IT Infrastructure and sophisticated analytical tools, including datavisualization, data mining, statistics, text mining and information retrieval. Regarding funding, tobuild a local data center will necessitate substantial investments. Fortunately, there is another optionthat will help researchers take advantage of these IT services to access, use and share informationeasily. Cloud services ideally offer on-demand software and resources over the Internet to read andanalyze ancient documents. More interestingly, billing system is completely flexible and based onresource usage and Quality of Service (QoS) level. In spite of its multiple advantages, outsourcingcomputations to an external provider arises several challenges. Specifically, security is the majorfactor hindering the widespread acceptance of this new concept. As a case study, we review the use ofcloud computing to process digital images safely. Recently, various solutions have been suggested tosecure data processing in cloud environement. Though, ensuring privacy and high performance needsmore improvements to protect the organization's most sensitive data. To this end, we propose aframework based on segmentation and watermarking techniques to ensure data privacy. In this respect,segementation algorithm is used to to protect client's data against untauhorized access, whilewatermarking method determines and maintains ownership. Consequentely, this framework willincrease the speed of development on ready-to-use digital humanities tools
A novel approach based on segmentation for securing medical image processing over cloud
No full textHealthcare professionals require advanced image processing software to enhance the quality of clinical decisions. However, any investment in sophisticated local applications would dramatically increase healthcare costs. To address this issue, medical providers are interested in adopting cloud technology. In spite of its multiple advantages, outsourcing computations to an external provider arises several challenges. In fact, security is the major factor hindering the widespread acceptance of this new concept. Recently, various solutions have been suggested to fulfill healthcare demands. Though, ensuring privacy and high performance needs more improvements to meet the healthcare sector requirements. To this end, we propose a framework based on segmentation approach to secure cloud-based medical image processing in the healthcare system
A new species of Dyrosaurus (Crocodylomorpha, Dyrosauridae) from the early Eocene of Morocco: phylogenetic implications
No full textFigure 8. Skull, mandible, and postcranial remains of Dyrosaurus maghribensis sp. nov., OCP DEK-GE 253, Ypresian of Mera el Arech, Oulad Abdoun Basin, Morocco.Published as part of Jouve, Stéphane, Iarochène, Mohamed, Bouya, Baâdi & Amaghzaz, Mbarek, 2006, A new species of Dyrosaurus (Crocodylomorpha, Dyrosauridae) from the early Eocene of Morocco: phylogenetic implications, pp. 603-656 in Zoological Journal of the Linnean Society 148 (4) on page 609, DOI: 10.1111/j.1096-3642.2006.00241.x, http://zenodo.org/record/542766
Linear Operators in Information Retrieval
No full textIn this paper, we propose a pseudo-relevance feedback approach based on linear operators: vector space basis change and cross product. The aim of pseudo-relevance feedback methods based on vector space basis change IBM (Ideal Basis Method) is to optimally separate relevant and irrelevant documents. Whereas the aim of pseudo-relevance feedback method based on cross product AI (Absorption of irrelevance) is to effectively exploit irrelevant documents. We show how to combine IBM methods with AI methods. The combination methods IBM+AI are evaluated experimentally on two TREC collections (TREC-7 ad hoc and TREC-8 ad hoc). The experiments show that these methods improve previous works
Hybrid MII-organic-diphosphate hydrates (MII = Mn, Ni and Zn): Structural characterization, hirshfeld surface analysis and antitumoral activity
No full textThree inorganic-organic hybrid diphosphates, templated by transition metal (2,6- (CH3)2C6H3NH3)2[MII(H2P2O7)2(H2O)2] (MII 1⁄4Mn, Ni, Zn), were successfully synthesized by low speed of evaporation conditions after using the ion exchange chemical procedure. Their crystal structures were solved from single-crystal X-ray diffraction data. All compounds are isotypic and crystallize in the triclinic system with space group Pı. The crystal structure is built from the alternatively arranged inorganic [MII(H2P2O7)2(H2O)2]2- anions and organic [(CH3)2C6H3NH3]þ cations, stabilized by OeH/O and N eH/O hydrogen bonds and p$p stacking. The complexes were investigated by using such techniques: IR, TGA/DTA, UVevisible characterization techniques (Ni(II), Mn(II) compounds) and 1H, 13C, 31P NMR (Zn(II) compound). Hirshfeld surface analyses of the studied salts were also carried out. Finally, in vitro anticancer activities of compounds were further determined with reference to three human cancer cell lines (Human cervical (A431), pancreatic (PSN1) and human ovarian cell lines (2008)). Hybrid complexes, based on manganese, nickel and zinc, displayed in vitro efficient antitumor activity compared with the positive reference drug cisplatin
The Use of Various Vegetation Level by Bird Community on Mbarek Spring, Gedangan, Malang
No full textStudy of correlation between vegetation and birds could show how great the impact of Figs (Ficus spp.) towards wildlife. Mbarek spring has a unique microhabitat by Figs. These trees expected to provide a high potential role and benefit related to supporting bird life. This study aims to analyze the use of vegetation by birds in the sphere of Mbarek’s spring microhabitat. Study was held in Mulyosari sub-village, Sumberejo village, Gedangan subdistrict, Malang regency. The study was conducted from 26-29 October 2017. Bird observation point was chosen on Ficus racemosa, known locally as ‘Lo’, which suspected to have a major influence on the presence of birds. Each of observation results were identified, counted, and recorded. Documentation were done incidentally. The results are visualized by descriptive representations of the use of vegetation composition on 4 vegetation classifications : seedling (high = 0-1.5 m), sapling (high≥1.5 m), pole (diameter = 10-20 cm), tree (diameter> 20 cm). Sooty-headed Bulbul (Pycnonotus aurigaster) is the dominant bird during observation. Most of birds observed at the canopy with the activity of sunbathing. Figs became a favorite location for birds to rest and parenting during the day. Sedges (Cyperus sp.) is the greatest importance on study site.
Keywords: Birds, Figs, Mbarek, Sedge
Hybrid MII-organic-diphosphate hydrates (MII = Mn, Ni and Zn): Structural characterization, hirshfeld surface analysis and antitumoral activity
No full textThree inorganic-organic hybrid diphosphates, templated by transition metal (2,6- (CH3)2C6H3NH3)2[MII(H2P2O7)2(H2O)2] (MII 1⁄4Mn, Ni, Zn), were successfully synthesized by low speed of evaporation conditions after using the ion exchange chemical procedure. Their crystal structures were solved from single-crystal X-ray diffraction data. All compounds are isotypic and crystallize in the triclinic system with space group Pı. The crystal structure is built from the alternatively arranged inorganic [MII(H2P2O7)2(H2O)2]2- anions and organic [(CH3)2C6H3NH3]þ cations, stabilized by OeH/O and N eH/O hydrogen bonds and p$p stacking. The complexes were investigated by using such techniques: IR, TGA/DTA, UVevisible characterization techniques (Ni(II), Mn(II) compounds) and 1H, 13C, 31P NMR (Zn(II) compound). Hirshfeld surface analyses of the studied salts were also carried out. Finally, in vitro anticancer activities of compounds were further determined with reference to three human cancer cell lines (Human cervical (A431), pancreatic (PSN1) and human ovarian cell lines (2008)). Hybrid complexes, based on manganese, nickel and zinc, displayed in vitro efficient antitumor activity compared with the positive reference drug cisplatin
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
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