Ponències/Comunicacions de congressos
http://hdl.handle.net/2117/3390
2016-08-24T14:01:05ZDeveloping professional skills at tertiary level: A model to integrate competencies across the curriculum
http://hdl.handle.net/2117/25103
Developing professional skills at tertiary level: A model to integrate competencies across the curriculum
Sánchez Carracedo, Fermín; Soler Cervera, Antonia; López Álvarez, David; Martín Escofet, Carme; Ageno Pulido, Alicia; Belanche Muñoz, Luis Antonio; Cabré Garcia, José M.; Cobo Valeri, Erik; Farré Cirera, Rafael; García Almiñana, Jordi; Marès Martí, Pere
In the context of the European Higher Education Area, curriculum design needs to be based on the defined competencies of each degree programs, including both domain specific and professional competencies. In this educational context, developing students’ professional skills poses a new challenge we need to face. The present work proposes a model to globally develop professional skills in an Engineering degree program. Based on competency maps, this model allows careful analysis, revision and iteration for an effective integration of professional skills. We define each competency in terms of “dimensions” (or sub-skills), which are further defined according to three-level objectives. Competency maps are built showing the specific graded objectives, which allows to integrate them most finely into degree subjects. A global competency map is also designed including the objectives to be achieved throughout the degree. This global map becomes a useful tool for curriculum designers and coordinators. It allows them to optimize the workload, and to make adjustments most effectively, helping students develop the defined competencies as a global comprehensive experience. To illustrate our model, we explain how it has been implemented to integrate “Communication skills” into subjects, and how the model has been applied to assess “Appropriate attitude towards work” skills.
2014-12-19T10:26:59ZSánchez Carracedo, FermínSoler Cervera, AntoniaLópez Álvarez, DavidMartín Escofet, CarmeAgeno Pulido, AliciaBelanche Muñoz, Luis AntonioCabré Garcia, José M.Cobo Valeri, ErikFarré Cirera, RafaelGarcía Almiñana, JordiMarès Martí, PereIn the context of the European Higher Education Area, curriculum design needs to be based on the defined competencies of each degree programs, including both domain specific and professional competencies. In this educational context, developing students’ professional skills poses a new challenge we need to face. The present work proposes a model to globally develop professional skills in an Engineering degree program. Based on competency maps, this model allows careful analysis, revision and iteration for an effective integration of professional skills. We define each competency in terms of “dimensions” (or sub-skills), which are further defined according to three-level objectives. Competency maps are built showing the specific graded objectives, which allows to integrate them most finely into degree subjects. A global competency map is also designed including the objectives to be achieved throughout the degree. This global map becomes a useful tool for curriculum designers and coordinators. It allows them to optimize the workload, and to make adjustments most effectively, helping students develop the defined competencies as a global comprehensive experience. To illustrate our model, we explain how it has been implemented to integrate “Communication skills” into subjects, and how the model has been applied to assess “Appropriate attitude towards work” skills.Effect of changing the copular when choosing the primary endpoint in a Randomized Clinical Trial
http://hdl.handle.net/2117/24709
Effect of changing the copular when choosing the primary endpoint in a Randomized Clinical Trial
Plana Ripoll, Oleguer; Gómez Melis, Guadalupe
2014-11-12T18:44:12ZPlana Ripoll, OleguerGómez Melis, GuadalupeSome theoretical thoughts when using a composite endpoint to prove the efficacy of a treatment
http://hdl.handle.net/2117/22571
Some theoretical thoughts when using a composite endpoint to prove the efficacy of a treatment
Gómez Melis, Guadalupe
This paper discusses, following Gómez and Lagakos (2011) methodology, to what extent is there a gain in efficiency from adding a component event to a relevant endpoint when the treatment effect on this component is not as strong as on the original relevant endpoint under ideal (independence) circumstances. It presents the bivariate copula model used to overcome the independence assumption and presents the relationship between the components of the asymptotic relative efficiency and a set of interpretable parametres.
2014-04-08T16:25:26ZGómez Melis, GuadalupeThis paper discusses, following Gómez and Lagakos (2011) methodology, to what extent is there a gain in efficiency from adding a component event to a relevant endpoint when the treatment effect on this component is not as strong as on the original relevant endpoint under ideal (independence) circumstances. It presents the bivariate copula model used to overcome the independence assumption and presents the relationship between the components of the asymptotic relative efficiency and a set of interpretable parametres.Joint modelling analysis of prostate cancer incidence: frequentist and bayesian approaches
http://hdl.handle.net/2117/22507
Joint modelling analysis of prostate cancer incidence: frequentist and bayesian approaches
Piulachs, Xavier; Serrat Piè, Carles; Rué, Montserrat; Armero, Carmen; Forte, Anabel; Perpiñán, Héctor; Luján, Marcos; Páez, Álvaro
Prostate specific antigen (PSA) is a biomarker for prostate cancer (PCa) that is widely used for PCa screening. Using a database of 2415 men included in the Spanish screening arm of the ERSPC Study, we will use joint modelling strategies to analyze if longitudinal PSA profiles and time to PCa incidence allow to obtain a better estimate of the individual risk of PCa. Conclusions and limitations of the study will be discussed.
2014-04-03T15:38:32ZPiulachs, XavierSerrat Piè, CarlesRué, MontserratArmero, CarmenForte, AnabelPerpiñán, HéctorLuján, MarcosPáez, ÁlvaroProstate specific antigen (PSA) is a biomarker for prostate cancer (PCa) that is widely used for PCa screening. Using a database of 2415 men included in the Spanish screening arm of the ERSPC Study, we will use joint modelling strategies to analyze if longitudinal PSA profiles and time to PCa incidence allow to obtain a better estimate of the individual risk of PCa. Conclusions and limitations of the study will be discussed.Estimation of survival functions subject to order restrictions
http://hdl.handle.net/2117/22506
Estimation of survival functions subject to order restrictions
Serrat Piè, Carles; Moreno, Laura
This contribution is framed in, and is part of, the Durabiltiy of Building Facades studies carried out in the last decade in the Institut d’Estadística i Matemàtica Aplicada a l’Edificació and Laboratori d’ Edificació at the Universitat Politècnica de Catalunya. The goal of this presentation is to incorporate in the analysis of the estimation of the durability of building facades respect the severity degrees (low, medium or high) the order of the events of interest. In other words, we will take into account preliminary estimates of the survival probabilities of previous events (e.g. initial severities) as order constraints for the estimation of survival probabilities for subsequent events of interest (e.g. more advanced severities).
Standard statistical analyses for this type of interval censored data are usually conducted by using the R statistical software, however it does not include libraries or packages neither for simultaneous estimation nor for the use of order constraints. For this reason, we will use AMPL and the solver SNOPT to implement the Turnbull's estimator with order restrictions, for the estimation of the survival function of each event of interest taking into account the information given by the survival function of some previous event of interest. The proposed methodology solves the inconsistency problem associated with a separate estimation of the respective survival probabilities. As a illustration the methodology will be applied to a simulated dataset. As a theoretical contribution, a conjecture on Turnbull's estimator Theorem under order restrictions will be proposed.
2014-04-03T15:05:09ZSerrat Piè, CarlesMoreno, LauraThis contribution is framed in, and is part of, the Durabiltiy of Building Facades studies carried out in the last decade in the Institut d’Estadística i Matemàtica Aplicada a l’Edificació and Laboratori d’ Edificació at the Universitat Politècnica de Catalunya. The goal of this presentation is to incorporate in the analysis of the estimation of the durability of building facades respect the severity degrees (low, medium or high) the order of the events of interest. In other words, we will take into account preliminary estimates of the survival probabilities of previous events (e.g. initial severities) as order constraints for the estimation of survival probabilities for subsequent events of interest (e.g. more advanced severities).
Standard statistical analyses for this type of interval censored data are usually conducted by using the R statistical software, however it does not include libraries or packages neither for simultaneous estimation nor for the use of order constraints. For this reason, we will use AMPL and the solver SNOPT to implement the Turnbull's estimator with order restrictions, for the estimation of the survival function of each event of interest taking into account the information given by the survival function of some previous event of interest. The proposed methodology solves the inconsistency problem associated with a separate estimation of the respective survival probabilities. As a illustration the methodology will be applied to a simulated dataset. As a theoretical contribution, a conjecture on Turnbull's estimator Theorem under order restrictions will be proposed.Longitudinal + reliability = joint modeling
http://hdl.handle.net/2117/22505
Longitudinal + reliability = joint modeling
Serrat Piè, Carles
The aim of this presentation is to introduce joint modelling techniques for the simultaneous analysis of longitudinal time-varying data and time-to-event data. This is an increasing area of interest for the analysis of complex systems. Among others, three main advantages of this approach are: a) it corrects the bias derived from a traditional separate analysis, b) the modelization allows to incorporate and model the between and within correlation among observations and, c) true longitudinal profiles for endogenous covariates can be included in the relative hazard survival sub-model.
The relevant benefit of these models is being able to estimate the effect of each subject-specific longitudinal profile in the hazard function for the event of interest, in an adaptive manner. In particular, subject-specific dynamic predictions, like conditional survival functions given the available longitudinal information, can be derived. In order to implement joint models, existing open source libraries in R will be introduced and some illustrations will be given.
2014-04-03T14:50:15ZSerrat Piè, CarlesThe aim of this presentation is to introduce joint modelling techniques for the simultaneous analysis of longitudinal time-varying data and time-to-event data. This is an increasing area of interest for the analysis of complex systems. Among others, three main advantages of this approach are: a) it corrects the bias derived from a traditional separate analysis, b) the modelization allows to incorporate and model the between and within correlation among observations and, c) true longitudinal profiles for endogenous covariates can be included in the relative hazard survival sub-model.
The relevant benefit of these models is being able to estimate the effect of each subject-specific longitudinal profile in the hazard function for the event of interest, in an adaptive manner. In particular, subject-specific dynamic predictions, like conditional survival functions given the available longitudinal information, can be derived. In order to implement joint models, existing open source libraries in R will be introduced and some illustrations will be given.On the design of a survey to measure effective communication in building
http://hdl.handle.net/2117/18138
On the design of a survey to measure effective communication in building
Serrat Piè, Carles; Rodriguez, Sonia; Forcada Matheu, Núria
Although effective communication is identified as a key indicator of project performan
ce,
communication aspects on contractors’ evaluation are not yet included. This paper aims to
review the most relevant contributions on the specific literature in order to design a survey to
test for the parameters that affect effective communication among
Construction Agents (CA),
i.e. PM’s, builder, designer and other professionals participants, during the construction
process of the project. The survey will be based on the experience and perceptions of the
corresponding professionals in Spain. The availa
bility of these par
ameters is crucial and it
represents
basic information for
developing
procedures and tools for the evaluation and
selection management of CAs.
2013-03-07T14:44:23ZSerrat Piè, CarlesRodriguez, SoniaForcada Matheu, NúriaAlthough effective communication is identified as a key indicator of project performan
ce,
communication aspects on contractors’ evaluation are not yet included. This paper aims to
review the most relevant contributions on the specific literature in order to design a survey to
test for the parameters that affect effective communication among
Construction Agents (CA),
i.e. PM’s, builder, designer and other professionals participants, during the construction
process of the project. The survey will be based on the experience and perceptions of the
corresponding professionals in Spain. The availa
bility of these par
ameters is crucial and it
represents
basic information for
developing
procedures and tools for the evaluation and
selection management of CAs.Survival analysis methodology for service live prediction and building maintenance
http://hdl.handle.net/2117/16155
Survival analysis methodology for service live prediction and building maintenance
Serrat Piè, Carles; Gibert Armengol, Vicente
This paper deals with, on one hand, the introduction of survival analysis techniques for being used in building maintenance and, on the other hand, the application of this methodology for analyzing a large building stock in order to obtain information for maintenance strategies and/or prevention policies. In particular, in this contribution the description of the time to the event when the event of interest is some damage (or some level of degradation or extent) on the building façade is the main goal to reach.
For the time being, building follow-up is based on inspections. However, data coming from building inspections are always not completed, but censored, due to the fact that, at each inspection time, the event of interest is already happened, or not yet. In order to solve this problematic, the existing methodology for fields like medicine, biology, industrial engineering or event history analysis is adapted, and routines in S-PLUS for a numerical and graphical systematic analysis are implemented. Estimates for non-parametric durability and hazard functions are derived.
The possibilities of the proposed methodology will be illustrated with its application to the building façades in Hospitalet de Llobregat, the second most important city in population in Catalonia (Spain), where more than 14.000 buildings have been inspected. The analysis of the results allows technicians to detect different zones and levels of intervention to be applied in the city.
2012-06-28T10:30:23ZSerrat Piè, CarlesGibert Armengol, VicenteThis paper deals with, on one hand, the introduction of survival analysis techniques for being used in building maintenance and, on the other hand, the application of this methodology for analyzing a large building stock in order to obtain information for maintenance strategies and/or prevention policies. In particular, in this contribution the description of the time to the event when the event of interest is some damage (or some level of degradation or extent) on the building façade is the main goal to reach.
For the time being, building follow-up is based on inspections. However, data coming from building inspections are always not completed, but censored, due to the fact that, at each inspection time, the event of interest is already happened, or not yet. In order to solve this problematic, the existing methodology for fields like medicine, biology, industrial engineering or event history analysis is adapted, and routines in S-PLUS for a numerical and graphical systematic analysis are implemented. Estimates for non-parametric durability and hazard functions are derived.
The possibilities of the proposed methodology will be illustrated with its application to the building façades in Hospitalet de Llobregat, the second most important city in population in Catalonia (Spain), where more than 14.000 buildings have been inspected. The analysis of the results allows technicians to detect different zones and levels of intervention to be applied in the city.Joint modelling of two sequential times to event with longitudinal information
http://hdl.handle.net/2117/15176
Joint modelling of two sequential times to event with longitudinal information
Huertas, Jaime-Abel; Gómez Melis, Guadalupe; Serrat Piè, Carles
In survival analysis, the lifetimes may be observed in some speci¯ed
order, where the time to event Tk, cannot be observed until T1; :::; Tk¡1 have
been observed. The present work proposes a joint model of two sequential times
to events together with longitudinal information, extending the joint model of
Wolfsohn and Tsiatis (1997) for one time to event and one longitudinal variable.
We apply the model to the clinical trial called TIBET, in which an intermit-
tent therapeutic strategy has been assigned to each patient. Of special clinical
interest is the lifetime that a patient needs before restarting treatment given the
progression of biological markers recorded during the followup period.
2012-02-15T18:52:01ZHuertas, Jaime-AbelGómez Melis, GuadalupeSerrat Piè, CarlesIn survival analysis, the lifetimes may be observed in some speci¯ed
order, where the time to event Tk, cannot be observed until T1; :::; Tk¡1 have
been observed. The present work proposes a joint model of two sequential times
to events together with longitudinal information, extending the joint model of
Wolfsohn and Tsiatis (1997) for one time to event and one longitudinal variable.
We apply the model to the clinical trial called TIBET, in which an intermit-
tent therapeutic strategy has been assigned to each patient. Of special clinical
interest is the lifetime that a patient needs before restarting treatment given the
progression of biological markers recorded during the followup period.Nonlinear transformation models: application to mortality of calves
http://hdl.handle.net/2117/12620
Nonlinear transformation models: application to mortality of calves
López-Segovia, Lucas; Espinal Berenguer, Anna; Gómez Melis, Guadalupe
We present. an appl ication of the proportional hazard-proportional hazard cure models to evalu ate the environmental and genetic factors that affect both mortality and survival up to weaning of beef calves. We usc the ntlm I>ackage (software R.) to fit. nonlinear sem iparamctric transformation models, which include the proportional hazard cure models as a specia l case. Results indicate that genetic factors such as calv in g month and calvin g diHlculLy are associated with the long-term sur vivors hip of the calves.
2011-05-19T18:12:23ZLópez-Segovia, LucasEspinal Berenguer, AnnaGómez Melis, GuadalupeWe present. an appl ication of the proportional hazard-proportional hazard cure models to evalu ate the environmental and genetic factors that affect both mortality and survival up to weaning of beef calves. We usc the ntlm I>ackage (software R.) to fit. nonlinear sem iparamctric transformation models, which include the proportional hazard cure models as a specia l case. Results indicate that genetic factors such as calv in g month and calvin g diHlculLy are associated with the long-term sur vivors hip of the calves.