2D Grammar Extension of the CMP Mathematical Formulae On-line Recognition System

Projecte realitzat en col.laboració amb Czech Technical University in PragueIn the last years, the recognition of handwritten mathematical formulae has recieved an increasing amount of attention in pattern recognition research. However, the diversity of approaches to the problem and the lack of a commercially viable system indicate that there is still much research to be done in this area. In this thesis, I will describe the previous work on a system for on-line handwritten mathematical formulae recognition based on the structural construction paradigm and two-dimensional grammars. In general, this approach can be successfully used in the anaylysis of inputs composed of objects that exhibit rich structural relations. An important benefit of the structural construction is in not treating symbols segmentation and structural anaylsis as two separate processes which allows the system to perform segmentation in the context of the whole formula structure, helping to solve arising ambiguities more reliably. We explore the opening provided by the polynomial complexity parsing algorithm and extend the grammar by many new grammar production rules which made the system useful for formulae met in the real world. We propose several grammar extensions to support a wide range of real mathematical formulae, as well as new features implemented in the application. Our current approach can recognize functions, limits, derivatives, binomial coefficients, complex numbers and more

2D Grammar Extension of the CMP Mathematical Formulae On-line Recognition System

Projecte realitzat en col.laboració amb Czech Technical University in PragueIn the last years, the recognition of handwritten mathematical formulae has recieved an increasing amount of attention in pattern recognition research. However, the diversity of approaches to the problem and the lack of a commercially viable system indicate that there is still much research to be done in this area. In this thesis, I will describe the previous work on a system for on-line handwritten mathematical formulae recognition based on the structural construction paradigm and two-dimensional grammars. In general, this approach can be successfully used in the anaylysis of inputs composed of objects that exhibit rich structural relations. An important benefit of the structural construction is in not treating symbols segmentation and structural anaylsis as two separate processes which allows the system to perform segmentation in the context of the whole formula structure, helping to solve arising ambiguities more reliably. We explore the opening provided by the polynomial complexity parsing algorithm and extend the grammar by many new grammar production rules which made the system useful for formulae met in the real world. We propose several grammar extensions to support a wide range of real mathematical formulae, as well as new features implemented in the application. Our current approach can recognize functions, limits, derivatives, binomial coefficients, complex numbers and more

Adaptation and validation for Spain of the child-oral impact on daily performance (C-OIDP) for use with adolescents

Objectives. To linguistically and culturally adapt the Child-OIDP, an Oral Health-Related Quality of Life (OHRQoL) index, into Spanish for use among adolescents, and to validate it by evaluating the psychometric properties of the self-administered version. Study design. Following a forward - backward translation procedure, the English version of the questionnaire was translated by independent translators and the reconciled version was then sent to three experts for assessment. A pilot study was conducted on a sub-sample of 30 adolescents aged between 11 - 12 years to assess their understanding of the questionnaire and its wording. The participants in the main study comprised 425 school children aged from 11 to 14 and pertaining to the oral health survey on school children in Navarre; these children were given a clinical examination and answered a structured questionnaire on oral health self-perception, satisfaction and perceived dental treatment needs. We evaluated the content validity, face validity, criterion validity, internal consistency and reliability. Results. With regard to the face validity, the experts? opinion was that the version was adequate. The pilot study indicated minor changes to the wording to better adapt it for the target population. Regarding criterion and construct validity, the association of the C-OIDP with the self-perception variables gave statistically significant results (p<0.01) in all cases. For the internal consistency analysis, no negative correlations were present in the correlations matrix nor were any of the values too high to become redundant; the majority were statistically significant (p<0.05). Cronbach?s alpha value was 0.68, with corrected item-total values of between 0.20 and 0.56 and with no alpha if-item-deleted values greater than 0.68. The test-retest analysis gave an intraclass correlation coefficient (ICC)=0.98. Conclusion. The Spanish version of the self-administered questionnaire for the C-OIDP for adolescents adequately demonstrated successful psychometric properties and, therefore, is a valid and reliable instrument for measuring the OHRQoL of adolescents

Validation the Oral Health Impact Profile (OHIP-14sp) for adults in Spain

Objectives: The oral health-related quality of life indicators are increasingly used to measure the impact of oral conditions on quality of life to complement clinical data in cross-sectional and longitudinal studies. One of the most internationally spread indi- cators is the Oral Health Impact Profile (OHIP-14), but it has still never been applied in Spain. The aim of this study was to validate the OHIP-14 for use among adults in Spain. Study design: A cross-sectional study was performed in Granada (Spain). A consecutive sample (n=270) of the Regional Government staff visiting the Employment Risk Prevention Centre for a routine medical check-up participated in this study. All participants self-completed the piloted OHIP-14sp and were examined according to World Health Organization methodology for caries, periodontal disease and prosthesis. Reliability analyses and validity tests were carried out to evaluate the psychometric properties of the OHIP-14sp by using two different methods of total scoring (i.e. the Additive and the Simple Count). Results: The reliability coefficient (Cronbach ́s alpha) of the OHIP-14sp was above the recommended 0.7 threshold and considered excellent (alpha: 0.89). Some subjective factors (perceived dental treatment need, complaints about mouth and self-rated oral satisfaction) were strongly associated with both total scoring methods of the OHIP-14sp, supporting the criterion, construct and convergent validity. Moreover the impact levels were mainly influenced by caries data, e.g., number of teeth requiring extraction (r = 0.21; p<0.01) and number of decayed visible teeth (between premolars) (r = 0.17; p<0.01). The prevalence of impacts was 80.7% using the occasional or more frequently threshold. The most prevalently affected OHIP domains were “psychological discomfort” (53.7%), “functional limitation” (51.1%) and “physical pain” (42.2%). Conclusions: The OHIP-14sp is a precise, valid and reliable instrument for assessing oral health-related quality of life among adult population in Spain

Associated factors with health-compromising behaviors among patients treated for oral cancer

To improve eradication strategies of health-compromising behaviors between oral cancer survivors, this study aimed to explore the extent of clustering of risk behaviors and to assess possible factors associated. A cross-sectional study was carried out among oral cancer patients at least 6 months after treatment. They completed a questionnaire about smoking, alcohol consumption, oral hygiene habits and dental visits. Presence of clusters was evaluated through pairwise Pearson correlations and principal component analysis. Factors associated with each identified cluster were analyzed with multivariate models. Among 142 patients, 14.8% smoked, 51.7% consumed alcohol, 52.1% performed oral hygiene less than twice a day, and 74.6% visited to dentist when there was a problem or never. There were two distinct clusters: smoking-alcohol consumption (general risk behaviors cluster) and oral hygiene-dental attendance (oral risk behaviors cluster). Multivariate analysis showed significant associations between males and both clustering patterns of health compromising behaviors, patients with clinical stage I or with longer follow-up and the presence of general risk behaviors cluster and worse social class and the presence of oral risk behaviors cluster. A high proportion of patients treated for oral cancer presented health-compromising behaviors occurring in clusters which reinforce the need for health promotion strategies to target multiple behaviors. Factors analyzed suggest that chances of having detrimental behavioral clustering are higher in male, patients with clinical stage I, with lower social class and those with longer follow-up after treatment

Evaluación y reconstrucción del conocimiento

En el presente trabajo damos a conocer una experiencia en la formación del profesorado en la cual las situaciones de evaluación se transforman en instrumentos de aprendizaje. En ella se parte de una situación de evaluación de los alumnos para que tomen conciencia de sus conocimientos y puedan reelaborarlos. La corrección individual de sus trabajos, su valoración inicial y el diseño de instrumentos de corrección colectiva permite, a través de las sesiones de revisión, el aprovechamiento y mejora de las producciones iniciales. Las preguntas y la elaboración de respuestas son un elemento clave en este proceso de metacognición y de construcción de conocimiento. Por otro lado, todas estas actividades pretenden ofrecer a los estudiantes un modelo de intervención docente. El trabajo se lleva a cabo con estudiantes de la diplomatura de Maestro en las asignaturas de primero y segundo curso "Desarrollo de habilidades lingüísticas", "Desarrollo del pensamiento matemático" y "Didáctica general".In this paper we present an experience in teacher training in which assessment situations become learning tools. It is part of a situation assessment for students to become aware of their knowledge and they can re-elaborate. The individual correction of their jobs, their initial assessment and design of instruments of collective correction allows, through review sessions, use and improvement of initial production. The questions and answers are developing a key element in this process of metacognition and knowledge building. Moreover, all these activities aim to provide students a model of educational intervention. The work was carried out with students from the Diploma of Master in the subjects of first and second course "Developing language skills", "Development of mathematical thinking" and "General Teaching".Experiencia de Formación del Profesorado en la que las situaciones de evaluación se transforman en instrumentos de aprendizaje. La formulación de preguntas facilita la construcción del conocimiento en los futuros maestros promoviendo así el desarrollo profesional docente.

Locally univalent functions, VMOA, and the Dirichlet space

"Vegeu el resum a l'inici del document del fitxer adjunt"

Validation the Oral Health Impact Profile Validation the Oral Health Impact Profile (OHIP-14sp) for adults in Spain

Abstract Objectives: The oral health-related quality of life indicators are increasingly used to measure the impact of oral conditions on quality of life to complement clinical data in cross-sectional and longitudinal studies. One of the most internationally spread indicators is the Oral Health Impact Profile (OHIP-14), but it has still never been applied in Spain. The aim of this study was to validate the OHIP-14 for use among adults in Spain. Study design: A cross-sectional study was performed in Granada (Spain). A consecutive sample (n=270) of the Regional Government staff visiting the Employment Risk Prevention Centre for a routine medical check-up participated in this study. All participants self-completed the piloted OHIP-14sp and were examined according to World Health Organization methodology for caries, periodontal disease and prosthesis. Reliability analyses and validity tests were carried out to evaluate the psychometric properties of the OHIP-14sp by using two different methods of total scoring (i.e. the Additive and the Simple Count). Results: The reliability coefficient (Cronbach´s alpha) of the OHIP-14sp was above the recommended 0.7 threshold and considered excellent (alpha: 0.89). Some subjective factors (perceived dental treatment need, complaints about mouth and self-rated oral satisfaction) were strongly associated with both total scoring methods of the OHIP-14sp, supporting the criterion, construct and convergent validity. Moreover the impact levels were mainly influenced by caries data, e.g., number of teeth requiring extraction (r = 0.21; p&lt;0.01) and number of decayed visible teeth (between premolars) (r = 0.17; p&lt;0.01). The prevalence of impacts was 80.7% using the occasional or more frequently threshold. The most prevalently affected OHIP domains were &quot;psychological discomfort&quot; (53.7%), &quot;functional limitation&quot; (51.1%) and &quot;physical pain&quot; (42.2%). Conclusions: The OHIP-14sp is a precise, valid and reliable instrument for assessing oral health-related quality of life among adult population in Spain

Validation the Oral Health Impact Profile (OHIP-14sp) for adults in Spain. Med Oral Patol Oral Cir Bucal.

Abstract Objectives: The oral health-related quality of life indicators are increasingly used to measure the impact of oral conditions on quality of life to complement clinical data in cross-sectional and longitudinal studies. One of the most internationally spread indicators is the Oral Health Impact Profile (OHIP-14), but it has still never been applied in Spain. The aim of this study was to validate the OHIP-14 for use among adults in Spain. Study design: A cross-sectional study was performed in Granada (Spain). A consecutive sample (n=270) of the Regional Government staff visiting the Employment Risk Prevention Centre for a routine medical check-up participated in this study. All participants self-completed the piloted OHIP-14sp and were examined according to World Health Organization methodology for caries, periodontal disease and prosthesis. Reliability analyses and validity tests were carried out to evaluate the psychometric properties of the OHIP-14sp by using two different methods of total scoring (i.e. the Additive and the Simple Count). Results: The reliability coefficient (Cronbach´s alpha) of the OHIP-14sp was above the recommended 0.7 threshold and considered excellent (alpha: 0.89). Some subjective factors (perceived dental treatment need, complaints about mouth and self-rated oral satisfaction) were strongly associated with both total scoring methods of the OHIP-14sp, supporting the criterion, construct and convergent validity. Moreover the impact levels were mainly influenced by caries data, e.g., number of teeth requiring extraction (r = 0.21; p&lt;0.01) and number of decayed visible teeth (between premolars) (r = 0.17; p&lt;0.01). The prevalence of impacts was 80.7% using the occasional or more frequently threshold. The most prevalently affected OHIP domains were &quot;psychological discomfort&quot; (53.7%), &quot;functional limitation&quot; (51.1%) and &quot;physical pain&quot; (42.2%). Conclusions: The OHIP-14sp is a precise, valid and reliable instrument for assessing oral health-related quality of life among adult population in Spain

Long-term etanercept survival in patients with psoriatic arthritis: a multicenter retrospective analysis in daily clinical practice in Spain

Although several randomized clinical trials and observational studies have evaluated the effectiveness, safety and drug survival of etanercept (ETN) in the treatment of psoriatic arthritis (PsA), long-term data regarding these aspects are currently scarce. For this reason, we sought to investigate the long-term survival and safety of ETN in PsA patients in 4 tertiary care Spanish hospitals over a 13-year observation period (from 2004 to 2017). The records of 85 PsA patients were reviewed. ETN showed an excellent survival profile, with rates of treatment discontinuation at 1, 3, 5 and 10 years of 15, 37, 46 and 59%, respectively. In our cohort, a trend toward longer drug survival in patients with shorter disease duration and those who were treated with ETN as their first biologic agent was observed. On the other hand, combination therapy with conventional disease-modifying antirheumatic drugs did not provide greater improvement on the long-term drug survival. Only 12% of the patients reported adverse events (AEs) during therapy, being most of them of mild to moderate intensity, and in only 7% AEs led to drug discontinuation. To the best of our knowledge, the present study shows the largest follow-up period of ETN-treated population analyzed in a real-life setting, and these results demonstrate the positive safety profile and long-term effectiveness of this biologic agent in the management of PsA patients