Search results for " protocol"
showing 10 items of 1320 documents
ZERO: An Efficient Ethernet-Over-IP Tunneling Protocol
2013
An Ethernet over IPv4 tunneling protocol is proposed, which categorizes all Ethernet frames to be tunneled into NICE and UGLY frames. The UGLY frames are tunneled by traditional methods, such as UDP or GRE encapsulation, resulting in substantial overhead due to additional headers and fragmentation usually required to transport long Ethernet frames over IP network typically limited to MTU=1,500 bytes. Meanwhile the NICE Ethernet frames are tunneled without any overhead as plain IPv4 packets due to non-traditional reuse of “fragment offset” or “identification” field in the IP header. It is shown that for typical Internet traffic transported over Ethernet, the proposed ZERO tunneling protocol …
Challenges in EU External Climate Change Policy-Making in the Early Post-Lisbon Era: The UNFCCC Copenhagen Negotiations
2011
The 15th United Nations Framework Convention on Climate Change (UNFCCC) Conference of the Parties (COP) meeting held in Copenhagen from 7 to 18 December 2009, which took place one week after the entry into force of the Treaty of Lisbon on 1 December 2009, has brought about rather disappointing outcomes from the perspective of the European Union (EU), which had previously displayed substantial leadership within the UN climate regime. Contrary to the EU’s objectives for the COP15 meeting, no legally binding agreement was reached to succeed the Kyoto Protocol after 2012 and the final Copenhagen Accord contained disappointingly few ambitious targets. This chapter tries to explain how this resul…
Fear-then-relief, mindlessness, and cognitive deficits
2002
The assumption that mindlessness underlies the effectiveness of the ‘fear-then-relief’ social influence technique has been verified in four studies. The first two experiments indicated that compliance of those experiment participants who were made to function on the thoughtful level under a ‘fear-thenrelief’ condition decreases to the level observed in the control group. The other two experiments were to analyze the cognitive functioning of people who at first experience fear and then a sudden and unexpected relief. The first of these experiments indicated that the amount of time needed to detect the expression of emotion on other persons’ faces is prolonged, and the second of these latter …
Potential applications using LNG cold energy in Sicily
2008
According to previsions, natural gas could be the main energy source worldwide, inducing relevant geopolitical changes. Most likely, such problems will be solved with the development of a gas transportation mode alternative to traditional pipelines: liquefied natural gas (LNG). The global LNG trade has increased rapidly during recent years. A significant amount of energy is consumed to produce low-temperature LNG, which has plenty of cryogenic exergy/ energy. Therefore, the effective utilization of the cryogenic energy associated with LNG vaporization is very important. Sicily, with more than five million inhabitants, is the second biggest region of Italy and in this region will be realized…
A low-cost embedded IDS to monitor and prevent Man-in-the-Middle attacks on wired LAN environments
2007
A man-in-the-middle (MitM) attack is, in the scope of a LAN, a technique where an attacker is able to redirect all traffic between two hosts of that same LAN for packet sniffing or data manipulation, without the end hosts being aware of it. Usually these attacks exploit security flaws in the implementation of the ARP protocol at hosts. Up to now, detecting such attacks required setting up a machine with special-purpose software for this task. As an additional problem, few intrusion detection systems (IDS) are able to prevent MitM attacks. In this work we present a low-cost embedded IDS which, when plugged into a switch or hub, is able to detect and/or prevent MitM attacks automatically and …
METALANG. Protocolo franco-español de exploración de habilidades metalingüísticas en niños de 6 a 9 años: un estudio preliminar
2012
International audience; In this work are described the principles of functional-pragmatic and the reasons for developing an exploration protocol for natural metalinguistic abilities. This study explains the base hypothesis and structure of METALANG protocol. This protocol consists in a Test and a Questionnaire for parents with two different scales: A = Ability, B = Frequency. Each element of the protocol has 6 sections and 40 items. It is performed a preliminary contrast with 12 subjects aged 6 to 9 years. Among the 12 subjects, 4 were diagnosed with dysphasia. METALANG shows high scores in reliability and internal consistency. This result confirms the hypothesis that it is possible a joint…
MAC Design for WiFi Infrastructure Networks: A Game-Theoretic Approach
2011
In WiFi networks, mobile nodes compete for accessing a shared channel by means of a random access protocol called Distributed Coordination Function (DCF). Although this protocol is in principle fair, since all the stations have the same probability to transmit on the channel, it has been shown that unfair behaviors may emerge in actual networking scenarios because of non-standard configurations of the nodes. Due to the proliferation of open source drivers and programmable cards, enabling an easy customization of the channel access policies, we propose a game-theoretic analysis of random access schemes. Assuming that each node is rational and implements a best response strategy, we show that…
Protocolo Familiar: sus resultados
2006
L'obiettivo di questo libro è di riferire circa i principali risultati conseguiti da "protocolli familiari". Dopo una breve rassegna della letteratura sugli strumenti di pianificazione strategica nel contesto delle aziende familiari e sull'evoluzione del concetto di protocollo familiare, vengono presentati i risultati di una ricerca condotta in Spagna su un campione di cinquanta imprese familiari estratte fra le circa novanta che hanno redatto un protocollo familiare avvalendosi dell'assistenza professionale di persone direttamente coinvolte nella Cattedra di Family Business dello IESE. Obiettivo della ricerca è di identificare i risultati - positivi o negativi, duraturi o passeggeri - dire…
A mathematical study on effective wavenumber, an operative computation procedure, and its use with radiance-temperature relationships
2003
In this paper we study the existence of effective wavenumber for any sensor by means of simple mathematics. We implement a numeric algorithm, based on the developed mathematical background, into a computer program named 'srf2radi', which is freely available via anonymous File Transfer Protocol (FTP) at ftp://ftp.uv.es/pub/src/. The number of effective wavenumbers for each temperature and their accuracy are also computed and studied for NOAA-16 Advanced Very High Resolution Radiometer Version 3 (AVHRR/3) channel 4. These effective wavenumbers can be used to obtain radiance-temperature relationships with physical meaning for any sensor in user-defined temperature intervals.
Web-based real-time data acquisition system as tool for energy efficiency monitoring
2013
A web-based data acquisition system is proposed as a research tool of the energy efficiency monitoring project of the test stands. Basic requirements for the architecture of the data acquisition system are discussed. The architecture of the data acquisition system is proposed to provide the real-time interface with sensors, to acquire and to log data from all sensors with fixed rate, and to deliver logged data through FTP to the end-user.