Sebastian Camilo Torres Torres - Academia.edu (original) (raw)

Papers by Sebastian Camilo Torres Torres

Research paper thumbnail of Preliminary Report on Polarimetric Calibration for the Advanced Technology Demonstrator

Research paper thumbnail of Signal Design and Processing Techniques for WSR-88D Ambiguity Resolution

Part 11: Staggered PRT and updates to the SZ-2 Algorithm National Severe Storms Laboratory Report

Research paper thumbnail of An adaptive, high-order, notch filter using all pass sections

Proceedings of the 1998 IEEE International Conference on Acoustics, Speech and Signal Processing, ICASSP '98 (Cat. No.98CH36181)

A fully adaptive infinite impulse response notah filter in cascade form is proposed to detect and... more A fully adaptive infinite impulse response notah filter in cascade form is proposed to detect and track multiple time-varying frequencies in additive white noise. Based on transformations for digital filters in the frequency domain, the filter results in a minimal number of parameters. In addition, a simple adaptive algorithm with good tracking and convergence properties is obtained by using all-pass filters and truncating the gradient. Computer simulations are included to verify the competitive performance of this filter under a wide range of conditions. From this analysis, we conclude that our new design is computationally simple, achieves rapid convergence, and is consequently a good choice in many non-stationary environments.

Research paper thumbnail of 3B.2 a Demonstration of Multifunction Capabilities on the National Weather Radar Testbed Phased-Array Radar

The U.S. government operates seven radar networks providing weather and aircraft surveillance for... more The U.S. government operates seven radar networks providing weather and aircraft surveillance for public weather services, air traffic control, and homeland defense. A next-generation, multifunction-phased-arrayradar (MPAR) concept has been proposed that could provide enhanced weather and aircraft surveillance services with potentially lower life-cycle costs than multiple single-function radar networks. As critical technology costs decrease, MPAR radars could prove to be a cost-effective alternative to current surveillance radars (Weber et al. 2007). The National Weather Radar Testbed PhasedArray Radar (NWRT PAR) located in Norman, OK was established to demonstrate the MPAR concept. Since its inception, scientists and engineers at the National Severe Storms Laboratory (NSSL) have been improving the quality of data produced by this system and, more importantly, demonstrating new capabilities in the context of weather and multifunction observations. Unlike conventional radars, which a...

Research paper thumbnail of Priority statement and some properties of t-lgHill estimator

Extremes, 2020

We acknowledge the priority on the introduction of the formula of t-lgHill estimator for the posi... more We acknowledge the priority on the introduction of the formula of t-lgHill estimator for the positive extreme value index. We provide a novel motivation for this estimator based on ecologically driven dynamical systems. Another motivation is given directly by applying the general t-Hill procedure to log-gamma distribution. We illustrate the good quality of t-lgHill estimator in comparison to classical Hill estimator on the novel data of the concentration of arsenic in drinking water in the rural area of the Arica and Parinacota Region, Chile.

Research paper thumbnail of The Impact of Elevation Sidelobe Contamination on Radar Data Quality for Operational Interpretation

Journal of Applied Meteorology and Climatology, 2020

To fulfill the evolving observational needs of the National Weather Service (NWS), future weather... more To fulfill the evolving observational needs of the National Weather Service (NWS), future weather radar systems will have to meet demanding requirements. Designing such systems will likely involve trade-offs between system cost and operational performance. A potential cost driver for future weather radars that could cause significant data-quality impacts on forecasters is the required angular resolution and sidelobe performance, which are mainly dictated by the antenna radiation pattern. Typical antenna radiation patterns can be characterized by the width of the main lobe and their sidelobe levels, which are traditionally measured across the azimuthal and elevation dimensions. In this work, we study the impact of increasing sidelobe levels on NWS forecasters’ data interpretation during warning operations. The resulting impact model can be used by decision-makers to better understand the cost–benefit trade-offs inherent in any radar system design.

Research paper thumbnail of Orientation Analysis of Simulated Tornadic Debris

Journal of Atmospheric and Oceanic Technology, 2018

Polarimetric weather radars are capable of detecting tornadic debris signatures (TDSs), which res... more Polarimetric weather radars are capable of detecting tornadic debris signatures (TDSs), which result from debris being lofted to the level of the radar beam and can be modulated by centrifuging and debris fallout. TDSs have been used in promising applications, such as enhanced tornado detection, improved warning and assessment of a potential tornado threat, and estimating tornado damage potential and intensity. Regions with negative differential reflectivity [Formula: see text] have been found in TDS observations but a physical explanation is yet to be determined. Some hypotheses suggest a common alignment of debris or non-Rayleigh scattering to be the cause. However, because it is inherently difficult and extremely dangerous to verify this, a simulated environment can aid in this context to reveal information that would otherwise be impossible to retrieve in practice. Under the simulation environment, the true construct of the debris is known, wherefrom the bulk distributions of po...

Research paper thumbnail of Adipose tissue inflammation and metabolic syndrome. The proactive role of probiotics

European journal of nutrition, Jan 24, 2018

The first part of this review focuses on the role of cells and molecules of adipose tissue involv... more The first part of this review focuses on the role of cells and molecules of adipose tissue involved in metabolic syndrome-induced inflammation and in the maintenance of this pathology. In the second part of the review, the potential role of probiotics-modulating metabolic syndrome-related inflammatory components is summarized and discussed. The search for the current scientific literature was carried out using ScienceDirect, PubMed, and Google Scholar search engines. The keywords used were: metabolic syndrome, obesity, insulin resistant, adipose tissue, adipose tissue inflammation, chronic low-grade inflammation, immune cells, adipokines, cytokines, probiotics, and gut microbiota. Chronic low-grade inflammation that characterized metabolic syndrome can contribute to the development of the metabolic dysfunctions involved in the pathogenesis of its comorbidities. Adipose tissue is a complex organ that performs metabolic and immune functions. During metabolic syndrome, an imbalance in ...

Research paper thumbnail of Meteorological Studies With the Phased Array Weather Radar and Data Assimilation Using the Ensemble Kalman Filter

The long-term goal of this project is to integrate two state-of-the-art technologies, the phased ... more The long-term goal of this project is to integrate two state-of-the-art technologies, the phased array weather radar (PAR) and the emerging Ensemble Kalman Filter (EnKF) data assimilation method, to optimize the radar performance and improve coastal and marine numerical weather prediction (NWP). OBJECTIVES This project leverages on the new PAR in Norman, Oklahoma to exploit phased array technology and its applications to improve NWP through EnKF data assimilation with the goal of improving environmental characterization and forecast to optimize naval operation. This project will further enhance the existing collaboration among ONR, National Serve Storms Laboratory (NSSL), and the University of Oklahoma (OU) to achieve the four specific research objectives: (1) develop an EnKF framework for optimally assimilating quantitative observations of the atmosphere including the PAR data, (2) design a sophisticated radar emulator which will be used to validate innovative processing techniques developed in the project and to design accurate and efficient forward observation operators Report Documentation Page Form Approved OMB No. 0704-0188 Public reporting burden for the collection of information is estimated to average 1 hour per response, including the time for reviewing instructions, searching existing data sources, gathering and maintaining the data needed, and completing and reviewing the collection of information. Send comments regarding this burden estimate or any other aspect of this collection of information, including suggestions for reducing this burden, to Washington Headquarters Services, Directorate for Information Operations and Reports, 1215 Jefferson Davis Highway, Suite 1204, Arlington VA 22202-4302. Respondents should be aware that notwithstanding any other provision of law, no person shall be subject to a penalty for failing to comply with a collection of information if it does not display a currently valid OMB control number.

Research paper thumbnail of Weather Radar Spatiotemporal Saliency: A First Look at an Information Theory–Based Human Attention Model Adapted to Reflectivity Images

Journal of Atmospheric and Oceanic Technology, 2017

Forecasters often monitor and analyze large amounts of data, especially during severe weather eve... more Forecasters often monitor and analyze large amounts of data, especially during severe weather events, which can be overwhelming. Thus, it is important to effectively allocate their finite perceptual and cognitive resources for the most relevant information. This paper introduces a novel analysis tool that quantifies the amount of spatial and temporal information in time series of constant-elevation weather radar reflectivity images. The proposed Weather Radar Spatiotemporal Saliency (WR–STS) is based on the mathematical model of the human attention system (referred to as saliency) adapted to radar reflectivity images and makes use of information theory concepts. It is shown that WR-STS highlights spatially and temporally salient (attention attracting) regions in weather radar reflectivity images, which can be associated with meteorologically important regions. Its skill in highlighting current regions of interest is assessed by analyzing the WR-STS values within regions in which sev...

Research paper thumbnail of ERAD 2014 -THE EIGHTH EUROPEAN CONFERENCE ON RADAR IN METEOROLOGY AND HYDROLOGY Improved Spectrum Width Estimators for Doppler Weather Radars

Research paper thumbnail of Efeito da substituição com polydextrosa e CMC na qualidade sensorial de bolos com baixo conteúdo de sacarose

Revista Lasallista De Investigacion, Jul 1, 2008

Effect of the substitution with polydextrose and CMC in the sensorial quality of cakes with a low... more Effect of the substitution with polydextrose and CMC in the sensorial quality of cakes with a low sucrose content Efeito da substituição com polydextrosa e CMC na qualidade sensorial de bolos com baixo conteúdo de sacarose

Research paper thumbnail of Efficient estimation of spectral moments and the polarimetric variables on weather radars, sonars, sodars, acoustic flow meters, lidars, and similar active remote sensing instruments

Research paper thumbnail of Understanding water extremes with caution

We discuss a sensitive topic, how to scientifically estimate extremes in water quality management... more We discuss a sensitive topic, how to scientifically estimate extremes in water quality managements. Such extremes are incorporating establishment of thresholds or levels of certain chemicals in the drinking water. In particular, we address the water fluoridation and quality of drinking water in Chile. Statistical approaches demonstrating the necessary background of water manager will be given in a survey exposition to establish link between statistics of extremes and practice.

Research paper thumbnail of Method for extension of unambiguous range and velocity of a weather radar

Research paper thumbnail of Weak properties and robustness of t-Hill estimators

Extremes, 2016

We describe a novel method of heavy tails estimation based on transformed score (t-score). Based ... more We describe a novel method of heavy tails estimation based on transformed score (t-score). Based on a new score moment method we derive the t-Hill estimator, which estimates the extreme value index of a distribution function with regularly varying tail. t-Hill estimator is distribution sensitive, thus it differs in e.g. Pareto and log-gamma case. Here, we study both forms of the estimator, i.e. t-Hill and t-lgHill.

Research paper thumbnail of Evaluaci�n del protocolo de punci�n lumbar diagn�stica en urgencias

Revista De Calidad Asistencial, 2009

Research paper thumbnail of Cine, Política y Derechos Humanos

Este libro se elaboro para sistematizar de las conversaciones que tuvieron lugar en la primera ed... more Este libro se elaboro para sistematizar de las conversaciones que tuvieron lugar en la primera edicion del seminario de grado “Cine, Politica y Derechos Humanos”, llevado a cabo en la Facultad de Filosofia y Humanidades de la Universidad Nacional de Cordoba en el segundo semestre del ano 2012.

Research paper thumbnail of Extreme value modelling of some glacial processes in Chilean Andes

A glacier is a solid ice mass which is fed by solid water (snow, hail or hoarfrost), transforms t... more A glacier is a solid ice mass which is fed by solid water (snow, hail or hoarfrost), transforms this solid water in ice and restores it via steam (evaporation/sublimation) or via liquid (water drained by the runoff stream). Such gain and loss of mass is analyzed as a balance (or budget). We will analyze Guanaco glacier which is located in the IV region of Chile (29°S) in the semi-arid Andes, the mass balance measured using the glaciological method in the period 2002-2014 will be analyzed. For statistical modelling we applied Hill and t-Hill estimators from parametrized family of Harmonic mean estimators.The expected dependencies are visible by increase of variance of t-Hill in comparison with Hill estimator. We aim to better understand underlying mechanisms, which can improve the interpretability of data.

Research paper thumbnail of Effect of the substitution with polydextrose and CMC in the sensorial quality of cakes with a low sucrose content

Introduction. The substitution of sucrose has been increased in recent years, redesigning traditi... more Introduction. The substitution of sucrose has been increased in recent years, redesigning traditional products in order to optimize their nutritional value. Substituting a part of common sugar with polydextrose and stabilizers in cakes, allow the provision of sensorial characteristics similar to those from traditional cakes. Objective. In this research work, 50% of sucrose in the cake formula is substituted with polydextrose (P) and Carboximetylcellulose (CMC) in three different percentages, 0,1, 0,2 and0,3%. Comparing the sensorial effects of these cakes when compared with a witness sample (0% of CMC and P). Materials and methods. A witness formula (0% of CMC and P) and three formulas in which 50% of sugar was substituted with P (80MG) were made. For every formula we added CMC at 0,1, 0,2 and 0,3%. The mixtures were poured in 7x3 cm aluminium molds, obtaining 40 samples for every formula. Later, they were left at room temperature in molds until they got cold. Then, they were covere...

Research paper thumbnail of Preliminary Report on Polarimetric Calibration for the Advanced Technology Demonstrator

Research paper thumbnail of Signal Design and Processing Techniques for WSR-88D Ambiguity Resolution

Part 11: Staggered PRT and updates to the SZ-2 Algorithm National Severe Storms Laboratory Report

Research paper thumbnail of An adaptive, high-order, notch filter using all pass sections

Proceedings of the 1998 IEEE International Conference on Acoustics, Speech and Signal Processing, ICASSP '98 (Cat. No.98CH36181)

A fully adaptive infinite impulse response notah filter in cascade form is proposed to detect and... more A fully adaptive infinite impulse response notah filter in cascade form is proposed to detect and track multiple time-varying frequencies in additive white noise. Based on transformations for digital filters in the frequency domain, the filter results in a minimal number of parameters. In addition, a simple adaptive algorithm with good tracking and convergence properties is obtained by using all-pass filters and truncating the gradient. Computer simulations are included to verify the competitive performance of this filter under a wide range of conditions. From this analysis, we conclude that our new design is computationally simple, achieves rapid convergence, and is consequently a good choice in many non-stationary environments.

Research paper thumbnail of 3B.2 a Demonstration of Multifunction Capabilities on the National Weather Radar Testbed Phased-Array Radar

The U.S. government operates seven radar networks providing weather and aircraft surveillance for... more The U.S. government operates seven radar networks providing weather and aircraft surveillance for public weather services, air traffic control, and homeland defense. A next-generation, multifunction-phased-arrayradar (MPAR) concept has been proposed that could provide enhanced weather and aircraft surveillance services with potentially lower life-cycle costs than multiple single-function radar networks. As critical technology costs decrease, MPAR radars could prove to be a cost-effective alternative to current surveillance radars (Weber et al. 2007). The National Weather Radar Testbed PhasedArray Radar (NWRT PAR) located in Norman, OK was established to demonstrate the MPAR concept. Since its inception, scientists and engineers at the National Severe Storms Laboratory (NSSL) have been improving the quality of data produced by this system and, more importantly, demonstrating new capabilities in the context of weather and multifunction observations. Unlike conventional radars, which a...

Research paper thumbnail of Priority statement and some properties of t-lgHill estimator

Extremes, 2020

We acknowledge the priority on the introduction of the formula of t-lgHill estimator for the posi... more We acknowledge the priority on the introduction of the formula of t-lgHill estimator for the positive extreme value index. We provide a novel motivation for this estimator based on ecologically driven dynamical systems. Another motivation is given directly by applying the general t-Hill procedure to log-gamma distribution. We illustrate the good quality of t-lgHill estimator in comparison to classical Hill estimator on the novel data of the concentration of arsenic in drinking water in the rural area of the Arica and Parinacota Region, Chile.

Research paper thumbnail of The Impact of Elevation Sidelobe Contamination on Radar Data Quality for Operational Interpretation

Journal of Applied Meteorology and Climatology, 2020

To fulfill the evolving observational needs of the National Weather Service (NWS), future weather... more To fulfill the evolving observational needs of the National Weather Service (NWS), future weather radar systems will have to meet demanding requirements. Designing such systems will likely involve trade-offs between system cost and operational performance. A potential cost driver for future weather radars that could cause significant data-quality impacts on forecasters is the required angular resolution and sidelobe performance, which are mainly dictated by the antenna radiation pattern. Typical antenna radiation patterns can be characterized by the width of the main lobe and their sidelobe levels, which are traditionally measured across the azimuthal and elevation dimensions. In this work, we study the impact of increasing sidelobe levels on NWS forecasters’ data interpretation during warning operations. The resulting impact model can be used by decision-makers to better understand the cost–benefit trade-offs inherent in any radar system design.

Research paper thumbnail of Orientation Analysis of Simulated Tornadic Debris

Journal of Atmospheric and Oceanic Technology, 2018

Polarimetric weather radars are capable of detecting tornadic debris signatures (TDSs), which res... more Polarimetric weather radars are capable of detecting tornadic debris signatures (TDSs), which result from debris being lofted to the level of the radar beam and can be modulated by centrifuging and debris fallout. TDSs have been used in promising applications, such as enhanced tornado detection, improved warning and assessment of a potential tornado threat, and estimating tornado damage potential and intensity. Regions with negative differential reflectivity [Formula: see text] have been found in TDS observations but a physical explanation is yet to be determined. Some hypotheses suggest a common alignment of debris or non-Rayleigh scattering to be the cause. However, because it is inherently difficult and extremely dangerous to verify this, a simulated environment can aid in this context to reveal information that would otherwise be impossible to retrieve in practice. Under the simulation environment, the true construct of the debris is known, wherefrom the bulk distributions of po...

Research paper thumbnail of Adipose tissue inflammation and metabolic syndrome. The proactive role of probiotics

European journal of nutrition, Jan 24, 2018

The first part of this review focuses on the role of cells and molecules of adipose tissue involv... more The first part of this review focuses on the role of cells and molecules of adipose tissue involved in metabolic syndrome-induced inflammation and in the maintenance of this pathology. In the second part of the review, the potential role of probiotics-modulating metabolic syndrome-related inflammatory components is summarized and discussed. The search for the current scientific literature was carried out using ScienceDirect, PubMed, and Google Scholar search engines. The keywords used were: metabolic syndrome, obesity, insulin resistant, adipose tissue, adipose tissue inflammation, chronic low-grade inflammation, immune cells, adipokines, cytokines, probiotics, and gut microbiota. Chronic low-grade inflammation that characterized metabolic syndrome can contribute to the development of the metabolic dysfunctions involved in the pathogenesis of its comorbidities. Adipose tissue is a complex organ that performs metabolic and immune functions. During metabolic syndrome, an imbalance in ...

Research paper thumbnail of Meteorological Studies With the Phased Array Weather Radar and Data Assimilation Using the Ensemble Kalman Filter

The long-term goal of this project is to integrate two state-of-the-art technologies, the phased ... more The long-term goal of this project is to integrate two state-of-the-art technologies, the phased array weather radar (PAR) and the emerging Ensemble Kalman Filter (EnKF) data assimilation method, to optimize the radar performance and improve coastal and marine numerical weather prediction (NWP). OBJECTIVES This project leverages on the new PAR in Norman, Oklahoma to exploit phased array technology and its applications to improve NWP through EnKF data assimilation with the goal of improving environmental characterization and forecast to optimize naval operation. This project will further enhance the existing collaboration among ONR, National Serve Storms Laboratory (NSSL), and the University of Oklahoma (OU) to achieve the four specific research objectives: (1) develop an EnKF framework for optimally assimilating quantitative observations of the atmosphere including the PAR data, (2) design a sophisticated radar emulator which will be used to validate innovative processing techniques developed in the project and to design accurate and efficient forward observation operators Report Documentation Page Form Approved OMB No. 0704-0188 Public reporting burden for the collection of information is estimated to average 1 hour per response, including the time for reviewing instructions, searching existing data sources, gathering and maintaining the data needed, and completing and reviewing the collection of information. Send comments regarding this burden estimate or any other aspect of this collection of information, including suggestions for reducing this burden, to Washington Headquarters Services, Directorate for Information Operations and Reports, 1215 Jefferson Davis Highway, Suite 1204, Arlington VA 22202-4302. Respondents should be aware that notwithstanding any other provision of law, no person shall be subject to a penalty for failing to comply with a collection of information if it does not display a currently valid OMB control number.

Research paper thumbnail of Weather Radar Spatiotemporal Saliency: A First Look at an Information Theory–Based Human Attention Model Adapted to Reflectivity Images

Journal of Atmospheric and Oceanic Technology, 2017

Forecasters often monitor and analyze large amounts of data, especially during severe weather eve... more Forecasters often monitor and analyze large amounts of data, especially during severe weather events, which can be overwhelming. Thus, it is important to effectively allocate their finite perceptual and cognitive resources for the most relevant information. This paper introduces a novel analysis tool that quantifies the amount of spatial and temporal information in time series of constant-elevation weather radar reflectivity images. The proposed Weather Radar Spatiotemporal Saliency (WR–STS) is based on the mathematical model of the human attention system (referred to as saliency) adapted to radar reflectivity images and makes use of information theory concepts. It is shown that WR-STS highlights spatially and temporally salient (attention attracting) regions in weather radar reflectivity images, which can be associated with meteorologically important regions. Its skill in highlighting current regions of interest is assessed by analyzing the WR-STS values within regions in which sev...

Research paper thumbnail of ERAD 2014 -THE EIGHTH EUROPEAN CONFERENCE ON RADAR IN METEOROLOGY AND HYDROLOGY Improved Spectrum Width Estimators for Doppler Weather Radars

Research paper thumbnail of Efeito da substituição com polydextrosa e CMC na qualidade sensorial de bolos com baixo conteúdo de sacarose

Revista Lasallista De Investigacion, Jul 1, 2008

Effect of the substitution with polydextrose and CMC in the sensorial quality of cakes with a low... more Effect of the substitution with polydextrose and CMC in the sensorial quality of cakes with a low sucrose content Efeito da substituição com polydextrosa e CMC na qualidade sensorial de bolos com baixo conteúdo de sacarose

Research paper thumbnail of Efficient estimation of spectral moments and the polarimetric variables on weather radars, sonars, sodars, acoustic flow meters, lidars, and similar active remote sensing instruments

Research paper thumbnail of Understanding water extremes with caution

We discuss a sensitive topic, how to scientifically estimate extremes in water quality management... more We discuss a sensitive topic, how to scientifically estimate extremes in water quality managements. Such extremes are incorporating establishment of thresholds or levels of certain chemicals in the drinking water. In particular, we address the water fluoridation and quality of drinking water in Chile. Statistical approaches demonstrating the necessary background of water manager will be given in a survey exposition to establish link between statistics of extremes and practice.

Research paper thumbnail of Method for extension of unambiguous range and velocity of a weather radar

Research paper thumbnail of Weak properties and robustness of t-Hill estimators

Extremes, 2016

We describe a novel method of heavy tails estimation based on transformed score (t-score). Based ... more We describe a novel method of heavy tails estimation based on transformed score (t-score). Based on a new score moment method we derive the t-Hill estimator, which estimates the extreme value index of a distribution function with regularly varying tail. t-Hill estimator is distribution sensitive, thus it differs in e.g. Pareto and log-gamma case. Here, we study both forms of the estimator, i.e. t-Hill and t-lgHill.

Research paper thumbnail of Evaluaci�n del protocolo de punci�n lumbar diagn�stica en urgencias

Revista De Calidad Asistencial, 2009

Research paper thumbnail of Cine, Política y Derechos Humanos

Este libro se elaboro para sistematizar de las conversaciones que tuvieron lugar en la primera ed... more Este libro se elaboro para sistematizar de las conversaciones que tuvieron lugar en la primera edicion del seminario de grado “Cine, Politica y Derechos Humanos”, llevado a cabo en la Facultad de Filosofia y Humanidades de la Universidad Nacional de Cordoba en el segundo semestre del ano 2012.

Research paper thumbnail of Extreme value modelling of some glacial processes in Chilean Andes

A glacier is a solid ice mass which is fed by solid water (snow, hail or hoarfrost), transforms t... more A glacier is a solid ice mass which is fed by solid water (snow, hail or hoarfrost), transforms this solid water in ice and restores it via steam (evaporation/sublimation) or via liquid (water drained by the runoff stream). Such gain and loss of mass is analyzed as a balance (or budget). We will analyze Guanaco glacier which is located in the IV region of Chile (29°S) in the semi-arid Andes, the mass balance measured using the glaciological method in the period 2002-2014 will be analyzed. For statistical modelling we applied Hill and t-Hill estimators from parametrized family of Harmonic mean estimators.The expected dependencies are visible by increase of variance of t-Hill in comparison with Hill estimator. We aim to better understand underlying mechanisms, which can improve the interpretability of data.

Research paper thumbnail of Effect of the substitution with polydextrose and CMC in the sensorial quality of cakes with a low sucrose content

Introduction. The substitution of sucrose has been increased in recent years, redesigning traditi... more Introduction. The substitution of sucrose has been increased in recent years, redesigning traditional products in order to optimize their nutritional value. Substituting a part of common sugar with polydextrose and stabilizers in cakes, allow the provision of sensorial characteristics similar to those from traditional cakes. Objective. In this research work, 50% of sucrose in the cake formula is substituted with polydextrose (P) and Carboximetylcellulose (CMC) in three different percentages, 0,1, 0,2 and0,3%. Comparing the sensorial effects of these cakes when compared with a witness sample (0% of CMC and P). Materials and methods. A witness formula (0% of CMC and P) and three formulas in which 50% of sugar was substituted with P (80MG) were made. For every formula we added CMC at 0,1, 0,2 and 0,3%. The mixtures were poured in 7x3 cm aluminium molds, obtaining 40 samples for every formula. Later, they were left at room temperature in molds until they got cold. Then, they were covere...