Jesus Juan

Jesus Juan
Universidad Politécnica de Madrid | UPM · E.T.S.I. Industriales

PhD Industrial Engineering

About

68
Publications
8,668
Reads
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538
Citations
Citations since 2017
17 Research Items
261 Citations
201720182019202020212022202301020304050
201720182019202020212022202301020304050
201720182019202020212022202301020304050
201720182019202020212022202301020304050
Additional affiliations
January 2001 - March 2017
Universidad Politécnica de Madrid
Position
  • Professor

Publications

Publications (68)
Article
Full-text available
In many competitive electricity markets around the world, the dynamic behavior of hourly electricity prices is subject to significant uncertainty and volatility due to electricity demand, availability of generation sources, fuel costs, and power plant availability. This work is devoted to describing and comparing the dynamics of electricity prices...
Article
COVID-19 has caused and continues to cause many changes in the way people around the world live. This study analyzes how COVID-19 and the adopted emergency remote teaching (ERT) methods have influenced university education, focusing on their impacts on project-based learning (PBL) methods. For this purpose, a comparative study is made between stude...
Article
Full-text available
There is a broad consensus on the importance and advisability of testing laboratories adopting a Quality Management System (QMS) to support their work, no matter they are industrial or research oriented. However, laboratories involved in R&D have specific difficulties to implement a QMS due to the peculiar nature of their activity. This paper analy...
Chapter
In this work, two analyses are conducted to assess the impact of adopting Daylight Saving Time (DST) on power consumption in the Spanish Electric System. This study was carried out using the short-term electric load forecasting software currently in use in the Spanish Transmission System Operator (TSO). The forecasting software will simulate the ca...
Article
Full-text available
The author included the name of her University in English “Technical University of Madrid” and it seems that to validate it for her PhD tramitation, it should appear in its original name “Universidad Politécnica de Madrid”. Change applies for all authors.
Article
Full-text available
In any electric power system, the Transmission System Operator (TSO) requires the use of short-term load forecasting algorithms. These predictions are essential for appropriate planning of the energy resources and optimal coordination for the generation agents. This study focuses on the development of a prediction model to be applied to the ten mai...
Conference Paper
Full-text available
When education is faced with a Project-Based Learning (PBL) approach, understanding and managing subjects considering project management principles help better achieving project objectives and hence improving the learning outcomes. Within the project management field, stakeholders' management has been considered a key element for project success. I...
Conference Paper
Full-text available
The Conceive-Design-Implement-Operate (CDIO) educational framework has been revolutionizing the world of engineering education since its inception at the beginning of this century. Its approach to business reality, encouraging comprehensive and contextualized project-based learning, has been the subject of numerous praises in recent years. However,...
Article
Full-text available
This study seeks to explore the relationship between entrepreneurship competencies and intention (EI) of a sample of potential STEM entrepreneurs in order to assess the conventional assumption on women exhibiting lower rates of entrepreneurship intention than men and that the lack of competence perceived is a higher barrier to be an entrepreneur fo...
Article
During the last two decades, the model developed by Cancelo and Espasa (1991) has been used for predicting the Spanish electricity demand with good results. This paper proposes a new approach for estimating multiequation models that extends the previous work in different and important ways. Primarily, 24-h equations are assembled to form a periodic...
Conference Paper
Full-text available
This study presents an innovative teaching-learning experience, aimed at connecting project-based learning with service learning in the biomedical engineering field. This experience is planned and implemented, coordinately, in two courses devoted to the biomedical engineering field: "Bioengineering Design" and "MedTECH". These courses are respectiv...
Conference Paper
Full-text available
Project-Based Learning (PBL) is a model in which learning opportunities are organized around projects. Projects are complex tasks that are based on challenging questions or subjects that involve the students in design, problem-solving, decision making, or investigative activities. In regard to students in Higher Education Institutions (HEI), dealin...
Conference Paper
Full-text available
Biomedical engineering is aimed at the application of engineering principles, methods and design concepts to medicine and biology for healthcare purposes, mainly as a support for preventive, diagnostic or therapeutic tasks, and is directly connected with professional practice in the medical device development sector. Industrial and management engin...
Article
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Sustainability is a field of growing interest in Project Management (PM). Literature on Sustainability in PM is abundant at a theoretical level; however, it is necessary to explore hands-on approaches for designing models and practices. The purpose of this study is to introduce management systems as a practical tool for Sustainability in PM. Manage...
Article
Full-text available
Operational Modal Analysis consists of estimating the modal parameters of civil/structural systems using only the response of the systems, while the unknown inputs are considered as realizations of white noise processes. Sometimes this last hypothesis is not correct, that is, the unknown input does not have a flat spectrum. The consequence is that...
Conference Paper
Full-text available
The usual way to perform a forced vibration test is to fix accelerometers to the structure, then apply a known input and record the response of the structure. An interesting variant consists of subsequently repeating the test but with the input force applied to different points, roving the input from test to test but not the sensors. In a second ph...
Article
Full-text available
Las tecnologías han transformado radicalmente el acceso a muchos servicios en la actualidad (educación, cultura, empleo, etcétera). Los telecentros son empresas sociales que tienen por objetivo proveer acceso a las tecnologías y a la información para un alto porcentaje de la población mundial. En este trabajo, de carácter exploratorio, se estudian...
Conference Paper
Full-text available
In any electricity market, both conventional and renewable producers trade their energy in the day-ahead market. Thus, renewable generating companies require a forecasting tool in order to predict the quantity of electricity that they will produce in the short-term future. This paper proposes a forecasting procedure for solar power producers, based...
Article
Full-text available
Thanks to its very simple recursive computing scheme, exponential smoothing has become a popular technique to forecast time series. We use this approach to analyze the hourly electricity price dynamics in day-ahead markets. The use of multivariate models when the dimension of observations is large (24 in this case) requires a large number of parame...
Conference Paper
Full-text available
This paper presents a time-domain stochastic system identification method based on Maximum Likelihood Estimation and the Expectation Maximization algorithm that is applied to the estimation of modal parameters from system input and output data. The effectiveness of this structural identification method is evaluated through numerical simulation. Mod...
Conference Paper
Full-text available
Operational Modal Analysis consists on estimate the modal parameters of a structure (natural frequencies, damping ratios and modal vectors) from output-only vibration measurements. The modal vectors can be only estimated where a sensor is placed, so when the number of available sensors is lower than the number of tested points, it is usual to perfo...
Article
Computing the modal parameters of large structures in Operational Modal Analysis often requires to process data from multiple non-simultaneously recorded setups of sensors. These setups share some sensors in common, the so-called reference sensors that are fixed for all the measurements, while the other sensors are moved from one setup to the next....
Article
Full-text available
Although the Stahel-Donoho estimator with resampling seems to o¤er an excellent compro-mise between computational cost and bias and variability properties among high breakdown point scale estimators, it still presents signi…cantly high bias when the outliers are close to the uncontaminated sample. In this paper, we analyze di¤erent possible causes...
Article
Background and objective Autoimmune thyroid disease is amongst the most frequent endocrine disorders during pregnancy. It is associated with an increase in perinatal morbidity, congenital defects, neurological damage, fetal and neonatal thyroid dysfunction. Maternal thyroid hormones play a key role in child neurodevelopment. We aimed to evaluate th...
Conference Paper
In Operational Modal Analysis (OMA) of a structure, the data acquisition process may be repeated many times. In these cases, the analyst has several similar records for the modal analysis of the structure that have been obtained at different time instants (multiple records). The solution obtained varies from one record to another, sometimes conside...
Conference Paper
Full-text available
Computing the modal parameters of large structures in Operational Modal Analysis often requires to process data from multiple non-simultaneously recorded setups of sensors. These setups share some sensors in common, the so-called reference sensors that are fixed for all the measurements, while the other sensors are moved from one setup to the next....
Book
Full-text available
A building or a bridge continuously vibrates, more or less intensely, due to the dynamic loads (displacement, vehicle traffic, wind, etc.) that act on it permanently. Its fundamental modes of vibration are obtained by the statistical analysis of records from accelerometers located on the structure. The structure's empirically determined frequencies...
Conference Paper
Full-text available
In Operational Modal Analysis of structures we often have multiple time history records of vibrations mea-sured at different time instants. This work presents a procedure for estimating the modal parameters of the structure processing all the records, that is, using all available information to obtain a single estimate of the modal parameters. The...
Article
This paper presents the Expectation Maximization algorithm (EM) applied to operational modal analysis of structures. The EM algorithm is a general-purpose method for maximum likelihood estimation (MLE) that in this work is used to estimate state space models. As it is well known, the MLE enjoys some optimal properties from a statistical point of vi...
Conference Paper
This paper presents a time-domain stochastic system identification method based on Maximum Likelihood Estimation and the Expectation Maximization algorithm. The effectiveness of this structural identification method is evaluated through numerical simulation in the context of the ASCE benchmark problem on structural health monitoring. Modal paramete...
Article
In this paper, we assess the impact of activation cross-section uncertainties on relevant fuel cycle parameters for a conceptual design of a modular European Facility for Industrial Transmutation (EFIT) with a “double strata” fuel cycle. Next, the nuclear data requirements are evaluated so that the parameters can meet the assigned design target acc...
Conference Paper
This paper presents a time-domain stochastic system identification method based on Maximum Likelihood Estimation (MLE) with the Expectation Maximization (EM) algorithm. The effectiveness of this structural identification method is evaluated through numerical simulation in the context of the ASCE benchmark problem on structural health monitoring. Mo...
Article
Full-text available
In order to make short-term predictions of electricity prices, linear dynamic models in their state-space formulation have been studied. A computer implementation of the EM (Expectation - Maximization) algorithm has been made for maximum likelihood estimation for a Multivariate EWMA model, (exponentially smoothing). In this approach the problem inc...
Article
The accuracy of modal frequency and damping estimators for non-lightly damped single degree of freedom systems depend on the response parameter used as well as the damping mechanism. Therefore, in order to make accurate modal parameter measurements, the damping mechanism at play must be known to be either viscous or hysteretic a priori. Here, compa...
Conference Paper
Full-text available
This paper describes a theoretical and experimental research work in relation to the system identification of an steel arch bridge. This bridge forms part of the Spanish highway network and is located about 30 km at the south of Granada (Spain). Ambient vibration tests were conducted during two days and the response of the structure was measured at...
Presentation
Full-text available
Impact of different correlation structures in cross-section covariance matrices on the inventory and inventory-related parametersNuria
Conference Paper
Full-text available
A dynamic long memory regression model with autoregressive errors is considered for the analysis of hourly electricity spot prices. The method provides reliable and accurate forecasts of hourly prices in the electricity market of France, Powernext day-ahead. The presence of significant autocorrelation in squared residual recommends to fit a conditi...
Article
Two methodologies to propagate the uncertainties on the nuclide inventory in combined Monte Carlo-spectrum and burn-up calculations are presented, based on sensitivity/uncertainty and random sampling techniques (uncertainty Monte Carlo method). Both enable the assessment of the impact of uncertainties in the nuclear data as well as uncertainties du...
Article
Full-text available
A comprehensive study is performed in order to evaluate the impact of activation cross section uncertainties on the actinide composition of the irradiated fuel in representative ADS irradiation scenarios. Some of the most recent sources/compilations of uncertainty data are used, and the results obtained from them compared. The ANL covariance matric...
Article
Full-text available
This work describes a procedure that determines the optimal allocation for the yearly energy resulting from random water inflows to the different subperiods of a year so that the expected benefits are maximized. Its main idea is to distribute the energy stored in reservoirs in each period into two parts: one is directly sold in the energy market, w...
Conference Paper
Full-text available
This work describes a procedure that determines the optimal allocation for the yearly energy resulting from random water inflows to the different subperiods of a year so that the expected benefits are maximized. Its main idea is to distribute the energy stored in reservoirs in each period into two parts: one is directly sold in the energy market, w...
Article
Full-text available
In this article we prove several important properties of 2^{k-p} minimum aberration (MA) designs with k>2, where n=2^{k-p} is the number of runs. We develop a simple method to build MA designs of resolution III. Furthermore, we introduce a simple relationship, based on product of polynomials, for computing their word-length patterns.
Article
This article describes a procedure for the detection of multivariate outliers based on the analysis of certain angular properties of the observations. The method is simple, exploratory in nature, and particularly well suited for the detection of concentrated contamination patterns, in which the outliers appear to form a cluster, separated from the...
Article
Reliability analysis of hydrothermal generating systems usually includes the calculation of annual reliability indicators. This work describes a methodology to evaluate annual reliability taking into account the maintenance program of thermal units and the allocation of hydroenergy to the different subperiods of the year. The procedure takes advant...
Article
Reliability analysis of a generating system is established in terms of the reliability characteristics of the different units in the system and in terms of the demand of energy to be satisfied. When the analysis is performed for the long-term (one year or more duration periods), the maintenance needs of thermal units as well as the time distributio...
Article
Activation calculations considering the neutron environment of the first structural wall (FSW) of the inertial fusion energy (IFE) reactor HYLIFE-II are performed for each of the natural elements from H to Bi. Results are used to rank the elements under waste management considerations. The concentration limits (CL's) corresponding to hands-on recyc...
Article
Full-text available
Usually, power system reliability indicators are obtained for one year periods, and must take into account maintenance requirements for thermal generating units. This paper describes an efficient method for the calculation of the two most common power system reliability indicators: LOLE (loss of load expectation) and EENS (expected value of energy...
Article
We describe a simple method for identifying the confounding pattern for 2k-p experiments when the design matrix is the only available information. This problem arises when one is interested in the study of a published design selected using Taguchi's methodology. The proposed method is very simple and, in most practical situations, it can be applied...
Article
Full-text available
A computational procedure is proposed to perform uncertainty analysis for the calculation of the isotopic inventory and radiological quantities obtained as a linear function of it, due to uncertainties in the activation cross sections. The method is applied to determine the uncertainty of the calculated shallow burial index (SBI) from activated typ...
Article
The amount of dirt or impurities in pulp and paper is a critical quality characteristic. Manufacturers evaluate dirt content by sampling a small portion of their production. In such cases, the estimate of the error associated with the measurement itself. Whether the analytical procedure is manual or automatic, the randomness inherent in the samplin...
Article
Full-text available
All known robust location and scale estimators with high breakdown point for multivariate sample's are very expensive to compute. In practice, this computation has to be carried out using an approximate subsampling procedure. In this work we describe an alternative subsampling scheme, applicable to both the Stahel-Donoho estimator and the estimator...
Article
Full-text available
This article proposes a generalization and improvement on the method of Lenth (1989). The problem is solved by fixing outliers in highly contaminated samples. To do this a scale robust estimator is obtained and its performance is analyzed using computer simulations. The method is extremely simple to use and leads to the same results as the more com...
Article
Full-text available
Es este artículo se propone un método para identificar efectos significativos en diseños factoriales sin replicación, resolviendo el problema como un caso de determinación de observaciones atípicas (outliers) en muestras altamente contaminadas. Para ello se deriva un estimador robusto de escala basándose en simulaciones realizadas con ordenador. El...
Article
Full-text available
En este artículo se desarrolla un algoritmo de puntos interiores para programación lineal a partir de consideraciones geométricas. En cada iteración del método se dispone de un punto interior al politopo. Con centro en dicho punto se obtiene un elipsoide interior a dicho politopo. La optimización de la función objetivo lineal sobre el elipsoide se...
Article
Full-text available
The growing demands and the diversity of oils available in applications for automotive shock-absorbers force companies in the sector to perform a large number of tests prior to marketing their products. Of all these tests, the friction test is the one that requires most trials because the results depend greatly on the formulations with base oils an...
Article
In this article we prove several important properties of 2k p minimum aber- ration (MA) designs with k ≥ n/2, where n = 2k p is the number of runs. We develop a simple method to build MA designs of resolution III. Further- more, we introduce a simple relationship, based on product of polynomials, for computing their word-length patterns.
Article
Full-text available
The procedures for the identification of outlier observations that are most reliable are based on the use of a robustified Mahalanobis distance, and have a very high computational cost even for small size problems. All these procedures present difficulties when applied to the identification of point-mass contaminations, where the outIiers are group...
Article
Full-text available
At present, cross section correlation data are very poorly known. This work can be helpful to evaluate the effort that the international community should devote to the improvement of correlation data for inventory prediction in nuclear systems. Our purpose is to assess the impact of different correlation structures on the uncertainties in relevant...

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