Search results for " protocol"

showing 10 items of 1320 documents

Isolation and characterization of Oct-4+/HLA-G+ mesenchymal stem cells from human umbilical cord matrix: differentiation potential and detection of n…

2008

The presence of multipotent cells in several adult and embryo-related tissues opened new paths for their use in regenerative medicine. Extraembryonic tissues such as umbilical cord are considered a promising source of stem cells, potentially useful in therapy. The characterization of cells from the umbilical cord matrix (Wharton''s Jelly) and amniotic membrane revealed the presence of a population of mesenchymal-like cells, sharing a set of core-markers expressed by "mesenchymal stem cells". Several reports enlightened the differentiation capabilities of these cells, even if at times the lack of an extensive characterization of surface markers and immune co-stimulators expression revealed h…

HistologyCell Culture TechniquesClinical uses of mesenchymal stem cellsCell SeparationBiologyUmbilical CordHLA AntigensHumansAmnionMolecular BiologyCell ProliferationStem cell transplantation for articular cartilage repairHLA-G AntigensSettore BIO/16 - Anatomia UmanaMultipotent Stem CellsHistocompatibility Antigens Class IMesenchymal stem cellCell DifferentiationMesenchymal Stem CellsAmniotic stem cellsCell BiologyTelomereCord liningCell biologyMedical Laboratory TechnologyMesenchymal stem cells Umbilical cord matrix Differentiation protocols Tolerogenic properties Self-renewal markersAmniotic epithelial cellsImmunologyStem cellOctamer Transcription Factor-3BiomarkersAdult stem cellHistochemistry and Cell Biology
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HUMAN SMUGGLING AND IRREGULAR IMMIGRATION IN THE EU: FROM COMPLICITY TO EXPLOITATION?

2016

The paper provides a comparative analysis of the EU and the UN to the fight against smuggling. The two approaches are considerably different; and, since the one in the UN documents is more respectful of the smuggled migrants' rights, the paper suggests that a similar approach should also be embraced by the EU documents.

Human smuggling - Irregular migration - EU Facilitation Framework Decision - EU Facilitation Directive - UN Protocol against smugglingSettore IUS/17 - Diritto Penale
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Problemi di giurisdizione nel contrasto al traffico di migranti via mare

2018

I trafficanti di esseri umani si avvalgono con sempre più insistenza di ben collaudati protocolli operativi. Questi ultimi consentono loro di sottrarsi alla giurisdizione penale italiana che non si radica qualora – in ossequio ai criteri di cui all’art. 6 c.p.ed in conformità alla Convenzione sull’Alto Mare– l’azione illecita avvenga in acque internazionali.Così, premesse alcune linee concettuali sui limiti spaziali alla efficacia della legge penale, l’indagine si sofferma sulla soluzione ermeneutica offerta dallaCassazione che, apparentemente in modo sbrigativo e per esigenze di effettività della risposta punitiva, ha fatto ricorso alla controversa figura dell’autore mediato per sanzionare condott…

Human traffickers frequently take advantage of operative protocols that make them unpunishable pursuant the Italian Criminal Law because according to Art. 6 of the Italian Penal Code and International Convention on the High Sea jurisdictional powers cannot be exercised when the conduct is committed on the High Sea. So illustrating the territorial limitations of the efficacy of Criminal Law the research focuses on the hermeneutical solution given by the Court of Cassation that apparently with the intent of pursuing a more effectivity of the Criminal response recurred to the controversial category of the indirect offender in order to sanction smuggling conducts that enjoy the rescue intervention of the Italian authorities to reach their criminal aims. In turn in order to better identify the Italian jurisdiction in the crime of Art. 12 T.U. imm. I propose to correctly apply the concorso di persone (art. 110 c.p.) and the reato eventualmente permanente. The difficulties of a dogmatic framing together with the trend towards a universalistic validity of the jurisdictional powers when human rights are involved may recommend an interpretation of Art. 7 of the Italian Penal Code to cover a wider protection of human rights according to interpretive solutions of § 6 of the German Penal Code.Settore IUS/17 - Diritto Penale
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Quantized Dissensus in switching networks with nodes death and duplication

2009

Hybrid systemsswitching systemsHybrid systems switching systems consensus protocol quantized protocolquantized protocolHybrid systems; switching systems; consensus protocol; quantized protocolconsensus protocol
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Distribution of soil organic carbon in Wadi Al-Thulaima, Saudi Arabia: A hyper-arid habitat altered by wastewater reuse

2018

The carbon cycle is being altered as a result of human-induced changes in the Earth's system. Therefore, ecosystems such as wetlands, authentic CO2 sinks, are becoming especially important. Little information exits on the soil organic carbon (SOC) stock for the middle east-countries man-made wetlands making wadis permanent with the outflow of wastewater treatment plants. This paper presents the vertical distribution of SOC content, soil bulk density (SBD) and SOC density in soil of vegetated and bare sites in Wadi Al-Thulaima, one of the artificial wetlands in central Saudi Arabia. The mean distribution of SBD in the vegetated and bare sites increased significantly with depth. Inversely, th…

Hydrologygeographygeography.geographical_feature_categoryCarbon depth distributionGlobal warmingSoil organic matterSaudi ArabiaCarbon sinkKyoto ProtocolWetland04 agricultural and veterinary sciencesSoil carbon010501 environmental sciencesCarbon sequestration01 natural sciencesSoil qualityCarbon cycleCarbon pool040103 agronomy & agriculture0401 agriculture forestry and fisheriesEnvironmental scienceSoil fertility0105 earth and related environmental sciencesEarth-Surface ProcessesCATENA
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Performance Evaluation of the IEEE 802.16 ARQ Mechanism

2007

The IEEE 802.16 technology defines the ARQ mechanism that enables a connection to resend data at the MAC level if an error is detected. In this paper, we analyze the key features and parameters of the ARQ mechanism. In particular, we consider a choice for the ARQ feedback type, a scheduling of the ARQ feedbacks and retransmissions, the ARQ block rearrangement, ARQ transmission window and ARQ block size. We run a number of simulation scenarios to study these parameters and how they impact a performance of application protocols. The simulation results reveal that the ARQ mechanism plays an important role in transmitting data over wireless channels in the IEEE 802.16 networks.

IEEE 802Computer sciencebusiness.industryComputerSystemsOrganization_COMPUTER-COMMUNICATIONNETWORKSHybrid automatic repeat requestData_CODINGANDINFORMATIONTHEORYScheduling (computing)Selective Repeat ARQSliding window protocolApplication protocolWirelessbusinessBlock sizeComputer network
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Rethinking the IEEE 802.11e EDCA Performance Modeling Methodology

2010

Analytical modeling of the 802.11e enhanced distributed channel access (EDCA) mechanism is today a fairly mature research area, considering the very large number of papers that have appeared in the literature. However, most work in this area models the EDCA operation through per-slot statistics, namely probability of transmission and collisions referred to "slots." In so doing, they still share a methodology originally proposed for the 802.11 Distributed Coordination Function (DCF), although they do extend it by considering differentiated transmission/ collision probabilities over different slots.We aim to show that it is possible to devise 802.11e models that do not rely on per-slot statis…

IEEE 802medium access protocolSettore ING-INF/03 - TelecomunicazioniComputer Networks and Communicationsbusiness.industryComputer scienceWiFiDistributed computingQuality of serviceComputerSystemsOrganization_COMPUTER-COMMUNICATIONNETWORKSQoSThroughputDistributed coordination functionComputer Science ApplicationsTransmission (telecommunications)Wireless lanElectrical and Electronic EngineeringbusinessThroughput (business)SoftwareComputer networkCommunication channelIEEE/ACM Transactions on Networking
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Analysis of the limitations of WiFi communications managed by the IEEE 802.11 protocol in data transmission in automated power distribution systems

2010

This paper presents a study on the performances of the IEEE 802.11 protocol used in a Medium Voltage networks management system, carried out using a model for the simulation of WiFi chains architectures. The results of the simulations give some practical indications for the use of the IEEE 802.11 protocol also in presence of transmissions characterized by rigid time intervals, for which this protocol is usually not suitable. Finally the whole communications system is presented.

IEEE 802.11EngineeringIEEE 802IEEE 802.11uSettore ING-INF/03 - Telecomunicazionibusiness.industryInter-Access Point ProtocolWiFiComputerSystemsOrganization_COMPUTER-COMMUNICATIONNETWORKSSettore ING-IND/33 - Sistemi Elettrici Per L'EnergiaIEEE 802.1QEmbedded systemIEEE 802.11g-2003DiagnosticIEEE 802.1XbusinessComputer networkIEEE 802.11sIEEE 802.11r-2008SPEEDAM 2010
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Do Current Domestic Gigabit Wireless Technologies Fulfill User Requirements for Ultra High Definition Videos?

2017

We present the results from a measurement-based performance evaluation of wireless networks based on IEEE 802.11n and IEEE 802.11ac standards in an indoor environment, with the aim to analyze their performance under high definition streaming video applications. We focus our study on analyzing the highest performance of these standards using off-the-shelf equipment, both with synthetic TCP and UDP traffic to measure the saturation throughput as well as high definition video streams. The measurements have been conducted in the student labs of our university and show good performance for streaming purposes in high definition and also ultra-high definition from a subjective video quality point …

IEEE 802.11u021103 operations researchWireless networkInter-Access Point Protocolbusiness.industryComputer scienceReal-time computing0211 other engineering and technologies02 engineering and technologyIEEE 802.11b-1999Gigabit0202 electrical engineering electronic engineering information engineeringWireless020201 artificial intelligence & image processingIEEE 802.11e-2005businessSubjective video qualityIEEE 802.11sComputer network2017 13th International Wireless Communications and Mobile Computing Conference (IWCMC)
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Assessing the effectiveness of IEEE 802.11e in multi-hop mobile network environments

2004

The IEEE 802.11e technology is receiving much interest due to the promising enhancements it offers to wireless local area networks in terms of QoS support. Until now, research has focused on single hop, access point based environments, which are the most common. We review the enhancements proposed in the last IEEE 802.11e draft (version 8.0). We analyze the performance of the IEEE 802.11e protocol on ad-hoc networks (multi-hop) in terms of throughput and end-to-end delay. We also measure the effectiveness for static and fully dynamic networks with a variable number of source stations. Finally, we analyze the performance of IEEE 802.11e when legacy IEEE 802.11 stations (no IEEE 802.11e suppo…

IEEE 802.11uIEEE 802IEEE 802.11w-2009business.industryComputer scienceInter-Access Point ProtocolDistributed computingComputerSystemsOrganization_COMPUTER-COMMUNICATIONNETWORKSIEEE 802.11b-1999IEEE 802.1XbusinessIEEE 802.11sComputer networkIEEE 802.11r-2008
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