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271.
Receiver-side semantic reasoning for digital TV personalization in the absence of return channels 总被引:1,自引:3,他引:1
Martín López-Nores Yolanda Blanco-Fernández José J. Pazos-Arias Jorge García-Duque Manuel Ramos-Cabrer Alberto Gil-Solla Rebeca P. Díaz-Redondo Ana Fernández-Vilas 《Multimedia Tools and Applications》2009,41(3):407-436
Experience has proved that interactive applications delivered through Digital TV must provide personalized information to
the viewers in order to be perceived as a valuable service. Due to the limited computational power of DTV receivers (either
domestic set-top boxes or mobile devices), most of the existing systems have opted to place the personalization engines in
dedicated servers, assuming that a return channel is always available for bidirectional communication. However, in a domain
where most of the information is transmitted through broadcast, there are still many cases of intermittent, sporadic or null
access to a return channel. In such situations, it is impossible for the servers to learn who is watching TV at the moment,
and so the personalization features become unavailable. To solve this problem without sacrificing much personalization quality,
this paper introduces solutions to run a downsized semantic reasoning process in the DTV receivers, supported by a pre-selection
of material driven by audience stereotypes in the head-end. Evaluation results are presented to prove the feasibility of this
approach, and also to assess the quality it achieves in comparison with previous ones.
Martín López-Nores received the Ph.D. degree in Computer Science from the University of Vigo in 2006. His research deals primarily with the design of personalization architectures for a range of DTV applications, considering both fixed and mobile receivers. Yolanda Blanco-Fernández received the Ph.D. degree in Computer Science from the University of Vigo in 2007. Her research is focused on knowledge representation, semantic reasoning technologies and recommender systems. José J. Pazos-Arias received the Ph.D. degree in Computer Science from the Madrid University of Technology (UPM) in 1995, and worked with Alcatel Laboratories in Madrid prior to joining the University of Vigo. He is the founder and director of the Networking & Software Engineering Group, which is currently involved with several projects related to DTV middleware and applications. Jorge García-Duque received the Ph.D. degree in Computer Science from the University of Vigo in 2000. His research is focused on the deployment of information services over heterogeneous networks of consumer devices. Manuel Ramos-Cabrer received the Ph.D. degree in Computer Science from the University of Vigo in 2000. His research interests include the application of artificial intelligence techniques to personalization systems. Alberto Gil-Solla received the Ph.D. degree in Computer Science from the University of Vigo in 2000. His research is currently involved with different aspects of middleware design and interactive multimedia services. Rebeca P. Díaz-Redondo received the Ph.D. degree in Computer Science from the University of Vigo in 2002. Her research is now focused on interactive DTV applications playing a central role in the control of smart home environments. Ana Fernández-Vilas received the Ph.D. degree in Computer Science from the University of Vigo in 2002. Her research interests deal with Web Services technologies and ubiquitous computing environments. 相似文献
Ana Fernández-VilasEmail: |
Martín López-Nores received the Ph.D. degree in Computer Science from the University of Vigo in 2006. His research deals primarily with the design of personalization architectures for a range of DTV applications, considering both fixed and mobile receivers. Yolanda Blanco-Fernández received the Ph.D. degree in Computer Science from the University of Vigo in 2007. Her research is focused on knowledge representation, semantic reasoning technologies and recommender systems. José J. Pazos-Arias received the Ph.D. degree in Computer Science from the Madrid University of Technology (UPM) in 1995, and worked with Alcatel Laboratories in Madrid prior to joining the University of Vigo. He is the founder and director of the Networking & Software Engineering Group, which is currently involved with several projects related to DTV middleware and applications. Jorge García-Duque received the Ph.D. degree in Computer Science from the University of Vigo in 2000. His research is focused on the deployment of information services over heterogeneous networks of consumer devices. Manuel Ramos-Cabrer received the Ph.D. degree in Computer Science from the University of Vigo in 2000. His research interests include the application of artificial intelligence techniques to personalization systems. Alberto Gil-Solla received the Ph.D. degree in Computer Science from the University of Vigo in 2000. His research is currently involved with different aspects of middleware design and interactive multimedia services. Rebeca P. Díaz-Redondo received the Ph.D. degree in Computer Science from the University of Vigo in 2002. Her research is now focused on interactive DTV applications playing a central role in the control of smart home environments. Ana Fernández-Vilas received the Ph.D. degree in Computer Science from the University of Vigo in 2002. Her research interests deal with Web Services technologies and ubiquitous computing environments. 相似文献
272.
Muñoz-Izquierdo Nora Segovia-Vargas María Jesús Camacho-Miñano María-del-Mar Pérez-Pérez Yolanda 《Machine Learning》2022,111(11):4183-4215
Machine Learning - We investigate whether key audit matter (KAM) paragraphs disclosed in extended audit reports—paragraphs in which the auditor highlights significant risks and critical... 相似文献
273.
Reversible Thermochromic Polymeric Thin Films Made of Ultrathin 2D Crystals of Coordination Polymers Based on Copper(I)‐Thiophenolates
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Javier Troyano Oscar Castillo José I. Martínez Vanesa Fernández‐Moreira Yolanda Ballesteros Daniel Maspoch Félix Zamora Salome Delgado 《Advanced functional materials》2018,28(5)
A one‐pot reaction between Cu(BF4)2·xH2O and 4‐mercaptobenzoic acid in acetone or methanol gives rise to the formation of lamellar microcrystals of two Cu(I)‐thiophenolate‐based coordination polymers (CPs) with the formulas [CuCT] n ( 1 ) (CT = 4‐carboxy‐thiophenolate) and [CuMCT]n ( 2 ) (MCT = 4‐methoxycarbonyl‐thiophenolate). Both 1 and 2 show a reversible luminescent thermochromic behavior upon cooling, changing their color from pale yellow to green to orange in the case of 1 , and from pale orange to green in the case of 2 . It is shown that the lamellar character of these crystals, which exhibit micrometer lateral dimensions and sub‐micrometer/nanometer thicknesses, allows processing them with an organic polymer such as polyvinylidene difluoride (PVDF) to form thermochromic 1 @PVDF and 2 @PVDF thin films. These thermal stimuli‐responsive thin films are freestanding, free of macroscopic defects, and robust under mechanical bending stress, opening up the possibility to use them in, for example, 2D imaging sensor films. 相似文献
274.
Electrospray‐assisted fabrication of core‐shell arabinoxylan gel particles for insulin and probiotics entrapment
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Rita Paz‐Samaniego Agustín Rascón‐Chu Francisco Brown‐Bojorquez Elizabeth Carvajal‐Millan Martin Pedroza‐Montero Erika Silva‐Campa Norberto Sotelo‐Cruz Yolanda L. López‐Franco Jaime Lizardi‐Mendoza 《应用聚合物科学杂志》2018,135(26)
This work presents the fabrication and characterization of electro‐sprayed core‐shell particles that were composed of maize bran arabinoxylans (MBAX) with insulin in the core, and maize wastewater arabinoxylans (MWAX) with Bifidobacterium in the shell. Two concentrations of MBAX (3% and 6% w/v) and MWAX (6% and 10% w/v) were evaluated. The particles fabricated with MBAX at 6% (w/v) in the core and MWAX at 10% (w/v) in the shell were more stable, presented spherical shape and no aggregation being therefore selected to be loaded with insulin and probiotics. These particles presented a size of 2.9 mm. Scanning electron microscopy analysis of the particle cross section revealed the presence of both, a smooth (shell) and a porous (core) microstructure. Confocal laser scanning microscopy confirmed the core‐shell structure of the particles and the viability of the probiotic entrapped. Gastrointestinal simulation strongly suggests that these particles are not degraded in the stomach and small intestine and that 76% of the carried insulin is released in colon. These results indicate that insulin and Bifidobacterium encapsulation by tetraaxial electro spraying can be a feasible and adequate technique to produce arabinoxylan capsules containing both insulin and probiotics. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018 , 135, 46411. 相似文献
275.
Max Liu Khalequz Zaman Yolanda M. Fortenberry 《International journal of molecular sciences》2021,22(8)
Aptamers are single-stranded DNA or RNA sequences that bind target molecules with high specificity and affinity. Aptamers exhibit several notable advantages over protein-based therapeutics. Aptamers are non-immunogenic, easier to synthesize and modify, and can bind targets with greater affinity. Due to these benefits, aptamers are considered a promising therapeutic candidate to treat various conditions, including hematological disorders and cancer. An active area of research involves developing aptamers to target blood coagulation factors. These aptamers have the potential to treat cardiovascular diseases, blood disorders, and cancers. Although no aptamers targeting blood coagulation factors have been approved for clinical use, several aptamers have been evaluated in clinical trials and many more have demonstrated encouraging preclinical results. This review summarized our knowledge of the aptamers targeting proteins involved in coagulation, anticoagulation, fibrinolysis, their extensive applications as therapeutics and diagnostics tools, and the challenges they face for advancing to clinical use. 相似文献
276.
Irene Marín M. Isabel Matheu Yolanda Díaz Sergio Castilln 《Advanced Synthesis \u0026amp; Catalysis》2010,352(18):3407-3418
Molybdenum catalysts are efficient and selective catalysts for the tandem epoxidation/alcoholysis or epoxidation/hydrolysis of glucal and galactal derivatives. In glucal derivatives the selectivity is mainly controlled by the allylic substituent at position 3 of the glycal, obtaining in general the products derived from the initial formation of the α‐epoxide (gluco) when this hydroxy group is protected, while products derived from the β‐epoxide (manno) are mainly obtained when it is unprotected. In galactal derivatives the estereoselectivity is always high to give the α‐epoxide (galacto) and independent of the protecting groups. 相似文献
277.
ABSTRACT: Mango ( Mangifera indica L.) is a fruit rich in flavor and nutritional values, which is an excellent candidate for producing chips. The objective of this study was to develop high-quality mango chips using vacuum frying. Mango (" Tommy Atkins ") slices were pretreated with different maltodextrin concentrations (40, 50, and 65, w/v), osmotic dehydration times (45, 60, and 70 min), and solution temperatures (22 and 40 °C). Pretreated slices were vacuum fried at 120, 130, and 138 °C and product quality attributes (oil content, texture, color, carotenoid content) determined. The effect of frying temperatures at optimum osmotic dehydration times (65 [w/v] at 40 °C) was assessed. All samples were acceptable (scores > 5) to consumer panelists. The best mango chips were those pretreated with 65 (w/v) concentration for 60 min and vacuum fried at 120 °C. Mango chips under atmospheric frying had less carotenoid retention (32%) than those under vacuum frying (up to 65%). These results may help further optimize vacuum-frying processing of high-quality fruit-based snacks. 相似文献
278.
279.
Knowledge acquisition research concerned with the development of knowledge acquisition tools is in need of a methodological approach to evaluation. This paper describes experimental methodology to conduct studies and experiments of users modifying knowledge bases with knowledge acquisition tools. The paper also reports on the lessons learned from several experiments that have been performed using this methodology. The hope is that it will help others design user evaluations of knowledge acquisition tools. Ideas are discussed for improving the current methodology and some open issues that remain. 相似文献
280.
Cristina Cruz‐Teno Pablo Pérez‐Martínez Javier Delgado‐Lista Elena M. Yubero‐Serrano Antonio García‐Ríos Carmen Marín Purificación Gómez Yolanda Jiménez‐Gómez Antonio Camargo Fernando Rodríguez-Cantalejo Maria M. Malagón Francisco Pérez‐Jiménez Helen M. Roche José López‐Miranda 《Molecular nutrition & food research》2012,56(6):854-865