Automatic adaptation decision making in the MPEG-21 framework: mechanisms and complementary description tools

This paper explains an effective mechanism to make automatic multimedia adaptation decisions within the MPEG-21 framework. The paper analyzes some difficulties for the implementation of automatic decision with the current MPEG-21 description schema. Subsequently, the paper proposes some improvements to the MPEG-21 description schema to address these difficulties. To demonstrate these improvements, the current implementation of the CAIN-21 framework is explained and several experiments are reporte

A Truth Universally Acknowledged?: (Post)Feminist Rewritings of Austen's Marriage Plot.

Ph.DDOCTOR OF PHILOSOPH

Image Management in a Touristic Destination: A Qualitative Approach Analysis of the Border City of Ciudad Juarez, Mexico

This paper summarizes an academic experience. It has been made by the contributions of a group of experts from a Mexican university participating in a discussion panel called "Image of a Touristic Destination". This was done within the framework of the activities carried out during the 8va. Catedra Patrimonial "Sergio Molina" on October 19-21, 2016. The purpose of this paper is to analyze the process of image management of a border touristic destination through the experience of Ciudad Juárez, in order to obtain an improvement in it. The concept of image is analyzed from its components of responsibility and participation in management between Government (message), Society (context), and Universities (management). The methodological approach selected was exploratory. The grounded theory method was selected and thematic analysis with the support of the Atlas-ti software was made. Suggestions are offered for actions which seek to highlight the positive aspects of the city as a touristic destination. The importance of generating responsibility and participation within a social network was highlighted. It was recommended to take advantage of the economic and intellectual resources in education of the Juarez society so that they can know their culture and history

Indicators and methods for spatial cohesion research: difficulties and challenges in low-density regions

Previous research carried out by this same authors went through the analysis of data sources and their potential to apply the polycentrism approach to territories where the urban features is weak (specifically in Castilla-La Mancha, Spain). Lately, several hubs were identified as potential centres and sub-centres in a regional articulation, helping out to delimitate accurately the map of polycentrism and Functional Urban Areas (FUAs) for each of them. Currently, we hope to depict those FUAs, highlighting the spatial cohesion, and looking for a better geographical knowledge, in accordance with current European standards. The most common methods to characterize functional areas used to be linked with numerous variables, demographic and economic, usually available and updated. Nevertheless, to go deepen is a difficult task because the broad range of indicators involved and the outcomes of recent dynamics. The specific aim of this paper is reviewing methodologies and datasets sources frequently used in the spatial evaluation, stressing those which focus less populated or dispersed areas. The analysis is driven by the difficulty to effectively assess what spatial cohesion is and how can it be measured, especially in these zones where this concept is crucial to understand the regional development.

Defects on a pyrite(100) surface produce chemical evolution of glycine under inert conditions : experimental and theoretical approaches

Acknowledgements This work has been supported by the MINECO project ESP2017-89053. The Instituto Nacional de Tecnica Aeroespacial supported the work performed at CAB. EER is thankful to Javier Martin-Torres, Alfonso Hernandez-Laguna and C. M. Pradier for their support and suggestions. This Project has been partially funded by the Spanish State Research Agency (AEI) Project No. MDM-2017-0737 Unidad de Excelencia ‘‘Marıa de Maeztu’’-Centro de Astrobiologıa (CSIC-INTA).Peer reviewedPublisher PD

Engineering students’ judgments on the favorable effect that the class context has on their academic learning

The COVID-19 pandemic has impacted human life, including educational settings. In Mexico, teachers and students found it necessary to adopt the online modality at all levels. As a result, both students and teachers face new demands and a re-conceptualization of their everyday academic lives. This study explored the engineering students' perception of the favorable effect level that the class context has on their learning. There were 551 participants took a cognitive algebra study. The experimental task involved reading 12 scenarios that described hypothetical online or face-to-face learning situations; then, each participant judged the degree to which these types of situations favor their learning, using an 11-point scale. The results indicated three cognitive styles when judging the degree to which each class context favors the learning. These styles share a similar cognitive mechanism in terms of information integration; however, the selection process and valuation of the factors differed across the groups. The students' perception on the class context influences their involvement and motivation level for courses on which they are enrolled. The present study's findings suggest that the cognitive algebra approach helps diagnose students' cognitive and emotional approach styles for different class contexts and provides information about the nature of their cognitive processes in terms of how students' judgments and attitudes towards classes are generated

Pharmacokinetics of β-Lactam Antibiotics:Clues from the Past to Help Discover Long-Acting Oral Drugs in the Future

β-Lactams represent perhaps the most important class of antibiotics yet discovered. However, despite many years of active research, none of the currently approved drugs in this class combine oral activity with long duration of action. Recent developments suggest that new β-lactam antibiotics with such a profile would have utility in the treatment of tuberculosis. Consequently, the historical β-lactam pharmacokinetic data have been compiled and analyzed to identify possible directions and drug discovery strategies aimed toward new β-lactam antibiotics with this profile

Multimedia Adaptation Decisions Modelled as Non-Deterministic Operations

This paper describes how a multimedia adaptation framework can automatically decide the sequence of operations to be executed in order to adapt an MPEG- 21 Digital Item to the MPEG-21 description of the usage environment in which it will be consumed. The main innovation of this work with respect to previous multimedia adaptation decision models is that in the proposed approach decisions can be made without knowing the exact behaviour of the operations that are going to be executed

Bounded non-deterministic planning for multimedia adaptation

This paper proposes a novel combination of artificial intelligence planning and other techniques for improving decision-making in the context of multi-step multimedia content adaptation. In particular, it describes a method that allows decision-making (selecting the adaptation to perform) in situations where third-party pluggable multimedia conversion modules are involved and the multimedia adaptation planner does not know their exact adaptation capabilities. In this approach, the multimedia adaptation planner module is only responsible for a part of the required decisions; the pluggable modules make additional decisions based on different criteria. We demonstrate that partial decision-making is not only attainable, but also introduces advantages with respect to a system in which these conversion modules are not capable of providing additional decisions. This means that transferring decisions from the multi-step multimedia adaptation planner to the pluggable conversion modules increases the flexibility of the adaptation. Moreover, by allowing conversion modules to be only partially described, the range of problems that these modules can address increases, while significantly decreasing both the description length of the adaptation capabilities and the planning decision time. Finally, we specify the conditions under which knowing the partial adaptation capabilities of a set of conversion modules will be enough to compute a proper adaptation plan

Infecção por Chromobacterium violaceum no Brasil. Relato de caso

We report the second case of infection with Chromobacterium violaceum that occurred in Brazil. A farm worker living in the State of São Paulo presented fever and severe abdominal pain for four days. At hospitalization the patient was in a toxemic state and had a distended and painful abdomen. Chest X-ray and abdominal ultrasound revealed bilateral pneumonia and hypoechoic areas in the liver. The patient developed failure of multiple organs and died a few hours later. Blood culture led to isolation of C. violaceum resistant to ampicillin and cephalosporins and sensitive to chloramphenicol, tetracyclin, aminoglicosydes, and ciprofloxacin. Autopsy revealed pulmonary microabscesses and multiple abscesses in the liver. The major features of this case are generally observed in infections by C. violaceum: rapid clinical course, multiple visceral abscesses, and high mortality. Because of the antimicrobial resistance profile of this Gram-negative bacillus, for appropriate empirical antibiotic therapy it is important to consider chromobacteriosis in the differential diagnosis of severe community infections in Brazil.Relata-se o segundo caso de infecção por Chromobacterium violaceum ocorrido no Brasil. Um trabalhador agrícola, morador do Estado de São Paulo apresentou febre e intensa dor abdominal durante quatro dias. Ao ser hospitalizado estava em estado toxêmico e tinha o abdômen distendido e doloroso. Radiografia de tórax e ultrassonografia abdominal mostraram pneumonia e áreas hipoecóicas no fígado. O paciente desenvolveu falência de múltiplos órgãos e faleceu poucas horas depois. Em cultura de sangue foi isolado C. violaceum resistente à ampicilina e a cefalosporinas, mas suscetível a cloranfenicol, tetraciclina, aminoglicosídeos e ciprofloxacina. À autópsia foram encontrados microabscessos pulmonares e múltiplos abscessos hepáticos. As principais características deste caso são geralmente observadas em infecções por C. violaceum: evolução rápida, formação de abscessos viscerais múltiplos e alta mortalidade. Em razão do padrão de resistência antimicrobiana desse bacilo Gram-negativo ambiental, para se obter antibioticoterapia empírica apropriada em casos de graves infecções comunitárias no Brasil é importante incluir no diagnóstico diferencial a cromobacteriose