13 resultados para Communication complexity


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[EN]Rumenic acid (cis9,trans11-18:2) is the main natural isomer of conjugated linoleic acid (CLA). Rumenic acid has many purported health benefits, but effects of most other CLA isomers are unknown. Typically trans7,cis9-18:2 is the second most abundant CLA isomer, but it co-elutes with rumenic acid on conventional polar gas chromatography (GC) columns, requiring complimentary analysis with silver-ion high performance liquid chromatography (Ag(+)-HPLC). Herein we report a rapid method for analyzing rumenic acid and trans7,cis9-18:2 using a 30 m ionic-liquid GC column. Optimal resolution of the two CLA isomers was at 145 degrees C and analysis of backfat from barley-fed cattle compared well with GC/Ag(+)-HPLC (y =0.978x - 0.031, r =0.985, P <0.001).

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Santamaría, José Miguel; Pajares, Eterio; Olsen, Vickie; Merino, Raquel; Eguíluz, Federico (eds.)

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1 p. -- [Editorial Material]

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Enhancing the handover process in broadband wireless communication deployment has traditionally motivated many research initiatives. In a high-speed railway domain, the challenge is even greater. Owing to the long distances covered, the mobile node gets involved in a compulsory sequence of handover processes. Consequently, poor performance during the execution of these handover processes significantly degrades the global end-to-end performance. This article proposes a new handover strategy for the railway domain: the RMPA handover, a Reliable Mobility Pattern Aware IEEE 802.16 handover strategy "customized" for a high-speed mobility scenario. The stringent high mobility feature is balanced with three other positive features in a high-speed context: mobility pattern awareness, different sources for location discovery techniques, and a previously known traffic data profile. To the best of the authors' knowledge, there is no IEEE 802.16 handover scheme that simultaneously covers the optimization of the handover process itself and the efficient timing of the handover process. Our strategy covers both areas of research while providing a cost-effective and standards-based solution. To schedule the handover process efficiently, the RMPA strategy makes use of a context aware handover policy; that is, a handover policy based on the mobile node mobility pattern, the time required to perform the handover, the neighboring network conditions, the data traffic profile, the received power signal, and current location and speed information of the train. Our proposal merges all these variables in a cross layer interaction in the handover policy engine. It also enhances the handover process itself by establishing the values for the set of handover configuration parameters and mechanisms of the handover process. RMPA is a cost-effective strategy because compatibility with standards-based equipment is guaranteed. The major contributions of the RMPA handover are in areas that have been left open to the handover designer's discretion. Our simulation analysis validates the RMPA handover decision rules and design choices. Our results supporting a high-demand video application in the uplink stream show a significant improvement in the end-to-end quality of service parameters, including end-to-end delay (22%) and jitter (80%), when compared with a policy based on signal-to-noise-ratio information.

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International communication strategy followed by Ikea analysis of campaigns in different countries, features and possible justifications of the differerences.

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The past years have seen an increasing debate on cooperation and its unique human character. Philosophers and psychologists have proposed that cooperative activities are characterized by shared goals to which participants are committed through the ability to understand each other’s intentions. Despite its popularity, some serious issues arise with this approach to cooperation. First, one may challenge the assumption that high-level mental processes are necessary for engaging in acting cooperatively. If they are, then how do agents that do not possess such ability (preverbal children, or children with autism who are often claimed to be mind-blind) engage in cooperative exchanges, as the evidence suggests? Secondly, to define cooperation as the result of two de-contextualized minds reading each other’s intentions may fail to fully acknowledge the complexity of situated, interactional dynamics and the interplay of variables such as the participants’ relational and personal history and experience. In this paper we challenge such accounts of cooperation, calling for an embodied approach that sees cooperation not only as an individual attitude toward the other, but also as a property of interaction processes. Taking an enactive perspective, we argue that cooperation is an intrinsic part of any interaction, and that there can be cooperative interaction before complex communicative abilities are achieved. The issue then is not whether one is able or not to read the other’s intentions, but what it takes to participate in joint action. From this basic account, it should be possible to build up more complex forms of cooperation as needed. Addressing the study of cooperation in these terms may enhance our understanding of human social development, and foster our knowledge of different ways of engaging with others, as in the case of autism.

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In this work, the volatile fraction of unsmoked and smoked Herreno cheese, a type of soft cheese from the Canary Islands, has been characterized for the first time. In order to evaluate if the position in the smokehouse could influence the volatile profile of the smoked variety, cheeses smoked at two different heights were studied. The volatile components were extracted by Solid Phase Microextraction using a divinylbenzene/carboxen/polydimethylsiloxane fiber, followed by Gas Chromatography/Mass Spectrometry. In total, 228 components were detected. The most numerous groups of components in the unsmoked Herreno cheese were hydrocarbons, followed by terpenes and sesquiterpenes, whereas acids and ketones were the most abundant. It is worth noticing the high number of aldehydes and ketones, and the low number of alcohols and esters in this cheese in relation to others, as well as the presence of some specific unsaturated hydrocarbons, terpenes, sesquiterpenes and nitrogenated derivatives. The smoking process enriches the volatile profile of Herreno cheese with ketones and diketones, methyl esters, aliphatic and aromatic aldehydes, hydrocarbons, terpenes, nitrogenated compounds, and especially with ethers and phenolic derivatives. Among these, methylindanones or certain terpenes like a-terpinolene, have not been detected previously in other types of smoked cheese. Lastly, the results obtained suggest a slightly higher smoking degree in the cheeses smoked at a greater height.

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El presente trabajo trata de analizar y explicar la relación entre el comportamiento de los individuos en las empresas y la consecución de los objetivos establecidos a través de la aplicación práctica de diferentes teorías de liderazgo y motivación en una empresa real como es Iberdrola. Debido a las dimensiones de la empresa y a la complejidad a la hora de obtener información relevante para el proyecto, centraremos nuestro análisis únicamente en el departamento de Compras y Seguros. Consideramos que las personas son el activo más valioso de las empresas ya que, al fin y al cabo, son el único factor diferenciador de las empresas, es el factor que puede distinguir entre una compañía competitiva de otra que no lo es. Por ello, creemos que es imprescindible analizar el comportamiento de los componentes de una empresa para identificar posibilidades de mejora, con el fin de alcanzar los objetivos establecidos. El proyecto tal y como hemos mencionado, principalmente se centra en el análisis del liderazgo y la motivación existente en el equipo de Compras y Seguros de Iberdrola S.A. Con los resultados obtenidos en el análisis se realizará una propuesta de valor con el fin de aportar diferentes alternativas que, acorde con algunas teorías organizacionales, puedan beneficiar a la empresa a la hora de conseguir sus diferentes metas en función de la situación en la que esté la empresa, las cualidades y comportamientos de todos sus componentes.

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Il y a aussi des chapitres en français. There are also chapters in English. Cap. 1. El complicado arte de exponer. Iñaki Arrieta Urtizberea. Cap. 2. “Esta exposición no es para este museo”. Las salas permanentes del Museu Valencià d’Etnologia. Joan Segui. Cap. 3. Debunking, Decentralizing and Dissonance: Cultural Jamming @ Museum of Vancouver. Viviane Gosselin. Cap. 4. L’exposition des objets de cultures autochtones aujourd’hui, gain ou perte de sens? Le cas de l’exposition « C’est notre histoire... » au Musée de la civilisation de Québec. Daniel Arsenault et Nadine Desbiens. Cap. 5. El Born de Barcelona: exposiciones conmemorativas, límites, problemas y desafíos. Francesc Xavier Hernàndez Cardona. Cap. 6. Silencios y omisiones: narrando y exhibiendo la historia nacional. Magdalena Mieri. Cap. 7. Exhibiting the Commons. The Case of Tensta konsthall. Haizea Barcenilla Garcia. Cap. 8. Interactividad y patrimonio. Retos, tendencias y líneas de futuro. Núria Serrat Antolí.

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The evolution of the railway sector depends, to a great extent, on the deployment of advanced railway signalling systems. These signalling systems are based on communication architectures that must cope with complex electromagnetical environments. This paper is outlined in the context of developing the necessary tools to allow the quick deployment of these signalling systems by contributing to an easier analysis of their behaviour under the effect of electromagnetical interferences. Specifically, this paper presents the modelling of the Eurobalise-train communication flow in a general purpose simulation tool. It is critical to guarantee this communication link since any lack of communication may lead to a stop of the train and availability problems. In order to model precisely this communication link we used real measurements done in a laboratory equipped with elements defined in the suitable subsets. Through the simulation study carried out, we obtained performance indicators of the physical layer such as the received power, SNR and BER. The modelling presented in this paper is a required step to be able to provide quality of service indicators related to perturbed scenarios.