Resultados de investigación

El conjunto de datos experimentales presentados contiene medidas de tiempo de reacción visual en sujetos jóvenes medidos en condiciones típicas simuladas en conducción nocturna. Se plantean distintas situaciones en la que el sujeto es deslumbrado con un iluminante de tecnología LED. Las pruebas se realizan en dos condiciones de luminancia de fondo 0.1 y 1cd/m2 y en tres situaciones diferentes: sin ser deslumbrado, con deslumbramiento con un iluminante de 2800 K de temperatura de color correlacionado (CCT) y con un iluminante de 6500 K. Estos son los datos incluidos en este dataset. Por otro lado, se incluye una encuesta de deslumbramiento con ambas TCC y una luminancia de fondo de 0.1 cd/m2 en el dataset. Más información es incluida en el documento “Read_me.txt” incluido junto con los datos Un segundo conjunto de datos de idénticas características experimentales pero con sujetos de mediana edad y una muestra de sujetos control es mostrado como versión 2 (V2). Más información es incluida en el documento “Read_me_V2.txt” incluido junto con los datos. Un tercer conjunto de datos de idénticas características experimentales pero con sujetos pseudofáquicos con lentes intraoculares de foco extendido es mostrado como versión 3 (V3). Más información es incluida en el documento “Read_me_V3.txt” incluido junto con los datos. Un cuarto conjunto de datos de idénticas características experimentales pero con sujetos pseudofáquicos con lentes intraoculares monofocales es mostrado como versión 4 (V4). Más información es incluida en el documento “Read_me_V4.txt” incluido junto con los datos., The experimental dataset presented contains measurements of visual reaction time in young subjects measured under typical simulated conditions in nighttime driving. Various situations are posed in which the subject is dazzled with a LED illuminant. The tests are conducted under two background luminance conditions, 0.1 and 1 cd/m2, and in three different situations: without being dazzled, with dazzle using an illuminant of 2800 K correlated color temperature (CCT), and with an illuminant of 6500 K. These are the data included in this dataset. Additionally, a glare survey with both CCTs and a background luminance of 0.1 cd/m2 is included in the dataset. More information is included in the document "Read_me.txt" provided along with the data. A second set of data with identical experimental characteristics but with middle-aged subjects and a sample of control subjects is shown as version 2 (V2). More information is included in the "Read_me_V2.txt" document provided along with the data. A third set of data with identical experimental characteristics but with pseudophakic subjects with extended depth of focus intraocular lenses is shown as version 3 (V3). More information is included in the "Read_me_V3.txt" document provided along with the data. A fourth set of data with identical experimental characteristics but with pseudophakic subjects with monofocal intraocular lenses is shown as version 4 (V4). More information is included in the "Read_me_V4.txt" document provided along with the data, Dpto. Física Teórica Atómica y Óptica/GIR Técnicas Ópticas de DIagnóstico, 1. Un fichero de información. Read_me.txt (sujetos jóvenes). 2. Un archivo con el procedimiento y metodología. pdf. 3. Un conjunto de datos de identificación. Fichero excel RT_LED_Y_Questionarie_PersonalData.cvs (sujetos jóvenes). 4 Un conjunto de datos de medida de tiempo de reacción. RT_LED-Y-Visual_Reaction_Time (sujetos jóvenes) 5. Un fichero de información. Read_me_M_V2.txt (sujetos mediana edad y grupo control). 6. Un conjunto de datos de identificación. Fichero excel RT_LED_Y_Questionarie_PersonalData V2.cvs (sujetos mediana edad y grupo control). 7. Un conjunto de datos de medida de tiempo de reacción. RT_LED-Y-Visual_Reaction_Time V2 (sujetos mediana edad y grupo control) 8. Un fichero de información. Read_me V3.txt (sujetos pseudofáquicos con lentes intraoculares de foco extendido). 9. Un conjunto de datos de identificación. Fichero excel RT_LED_Y_Questionarie_PersonalData V3.cvs (sujetos pseudofáquicos con lentes intraoculares de foco extendido). 10. Un conjunto de datos de medida de tiempo de reacción. RT_LED-Y-Visual_Reaction_Time V3 (sujetos pseudofáquicos con lentes intraoculares de foco extendido) 11. Un fichero de información. Read_me V4.txt (sujetos pseudofáquicos con lentes intraoculares monofocales). 12. Un conjunto de datos de identificación. Fichero excel RT_LED_Y_Questionarie_PersonalData V4.cvs (sujetos pseudofáquicos con lentes intraoculares monofocales). 13. Un conjunto de datos de medida de tiempo de reacción. RT_LED-Y-Visual_Reaction_Time V4 (sujetos pseudofáquicos con lentes intraoculares monofocales), MICIU/AEI /10.13039/501100011033 y por FEDER, UE

Base de datos de desmentidos de las agencias Maldita.es, Newtral y Verificat sobre desinformación relacionada con personas migrantes desde el año 2017 hasta mayo de 2023. La base incluye un total de 570 desmentidos de estas agencias de verificación. Se aporta el titular de la verificación, el enlace, la agencia y la fecha de su publicación., Historia Moderna, Contemporánea, de América y Periodismo

Abstract: This data set consists of series of vectors formed from angular speeds and accelerations, conveniently labeled with time in µseconds. A total of 47 individuals (13 female and 34 male) aged from 18 to 68 years old collaborated in the making of our database. Independently of whether the subject was right- or left-handed, the individuals were asked to interact as naturally as possible with a right-handed door handle for 25 repetitions on a firmly closed door. The subjects were asked to try to open a closed door: (i) to start at a distance of 3 m right in front of the door and walk as they usually will do with the intention of acting on the door handle, then (ii) to act on the door handle, (iii) to wait a very short time with the lever on the end-stop position, (iv) to release the force while handling the door handle, and finally (v) to move away the hand. For each of the donors, age, gender and height were recorded and stored aside the samples. No other personal information was included on it. All the persons were informed about the purpose of the corpus, and that the recorded data would be made available for the community in an anonymous way, and they signed an uninterested agreement donating of the data. The first 200 samples of each series capture the rest state of the system before the instant in which the platform detects a significant change in the energy of the signal; from this very moment the platform acquires a fixed amount of samples up to complete a total duration of 2.5 s, that we considered large enough to gather all data. Discarding some series that did not contain the whole user interaction with the door handle was a minor problem, and finally a corpus consisting of 20 repetitions for each subject was created and labeled, resulting of a total of 960 attempts of opening a door., Grupo de Tecnologías de la Información, knobID_dataset_GA.csv - Indexed dataset with acquired values from 6DOF IMU sensor unit., meta_final_dataset - Index of users containing gender, right/left handed, height, age, Readme - Dataset description

Tratamiento de 6 especies bellotas por 4 especies de roedores y sus destinos finales

The complete valorisation of sugar beet pulp (SBP) through pectooligosaccharides (POS) extraction and biobutanol production was studied. A central composite experimental design was planned to optimise the time and temperature of the hydrothermal microwave-assisted extraction. 59.7 % of the POS present in the SBP were recovered, and a prehydrolysate with 31.1 g POS/L was obtained under optimal conditions (165 °C and 12 min). The prehydrolysate was further precipitated by ethanol. One-step and stepwise alcohol precipitation were evaluated. The prehydrolysate:ethanol ratio was increased from 1:1 to 1:3 in the stepwise precipitation, whereas a ratio of 1:2 was used in the one-step precipitation. The pectin fractions differed from each other in their chemical composition. The molecular weight of the pectin fractions ranged from 474 to 523 kDa, and the degree of esterification of all of them was higher than 50 %, so they can be considered high methoxyl pectins. On the other hand, the pretreated solid enriched in glucan was subjected to enzymatic hydrolysis with cellulases and fermented by Clostridium beijerinckii, producing 8.3 g butanol/L after 48 h of fermentation (53 kg butanol/t SBP). As this research has demonstrated, SBP is a suitable feedstock for a green biorefinery approach. The fractionation of SBP by hydrothermal treatment avoids using acid and alkaline solvents and allows high POS and biobutanol production yields., Instituto de Procesos Sostenibles, Spanish Ministry of Science, Innovation and Universities (PID2020-115110RB-I00/AEI/10.13039/501100011033)

Discarded red beetroot (DRB) is an organic waste generated in the food industry. This study is focused on the valorization of DRB through the recovery of bioactive compounds. The characterization of the DRB juice confirmed a higher content of antioxidants (DPPH 504 ± 24 µmol TE/L, FRAP 10920 ± 440 µmol TE/L, ABTS 22012 ± 592 µmol TE/L), phenolic compounds (1789 ± 56 mg GAE/L), flavonoids (471± 17 mg CE/L) and betalains (1426 ± 24 mg/L) than commercial juices. DRB pomace contains pectin that was recovered by microwave extraction aided by a surfactant (polyethylene glycol, PEG4000). Conditions (temperature, time and surfactant concentration) for the extraction of galacturonic acid (GalA) or pectooligosaccharides (POS) were optimized by a central composite experimental design. POS were extracted at high temperatures (160 °C, 5.3 min, 8.4 g PEG4000/L, yield of 271.2 g POS/kg dry pomace). In comparison, galacturonic acid extraction was favored at moderate conditions (137 °C, 5 min, 2.5 g PEG4000/L, yield of 120.1 g GalA/kg dry pomace). The characterization of the freeze-dried hydrolysates revealed that the solid obtained under moderate temperature conditions (137 ºC) showed a higher GalA content (49.5%) and lower neutral sugars (11.4%), as GalA degrades at lower temperatures than pentoses. The recovered pectin can be considered high-methoxyl pectin, as the degree of esterification was higher than 50%. FTIR spectra of the freeze-dried hydrolysates showed functional groups consistent with pectin. MALDI-TOF-MS analysis revealed the presence of oligosaccharides of hexoses and pentoses with different structures and degrees of polymerization. Thus, DRB, a low-value vegetable waste, can be converted into high-value-added bioproducts in a biorefinery framework., Instituto de Procesos Sostenibles, Spanish Ministry of Science, Innovation and Universities (PID2020-115110RB-I00/AEI/10.13039/501100011033)

This research focuses on the integrated recovery of rhamnogalacturonan-I (RG-I) pectin from sugar beet pulp (SBP). First, the extraction of RG-I pectin through sequential ultrasound-assisted extraction (UAE) and microwave-assisted extraction (MAE) was assessed. Optimization using a response surface methodology identified the optimal conditions as initial pH 4, 10 minutes of UAE, and 157 °C for MAE, achieving a 66.0 % recovery of pectooligosaccharides (POS). Additionally, purification through continuous diafiltration and concentration via ultrafiltration of the POS using membranes with different molecular weight cut-offs (MWCO) was explored. In contrast to previous research using discontinuous diafiltration, the use of continuous diafiltration allowed a decrease in the extract viscosity and obtained higher yields using a higher MWCO membrane. The refined RG-I pectin solids exhibited a high global yield (39 – 40 g pectin/100 g SBP), and high-methoxyl characteristics, as well as purity levels (70 – 80 %) similar to commercial prebiotics., Instituto de Procesos Sostenibles, Spanish Ministry of Science, Innovation and Universities (PID2020-115110RB-I00/AEI/10.13039/501100011033)

Code-modulated visual evoked potentials (c-VEPs) have marked a milestone in the scientific literature due to their ability to achieve reliable, high-speed brain–computer interfaces (BCIs) for communication and control. Generally, these expert systems rely on encoding each command with shifted versions of binary pseudorandom sequences, i.e., flashing black and white targets according to the shifted code. Despite the excellent results in terms of accuracy and selection time, these high-contrast stimuli cause eyestrain for some users. For this reason, we propose the use of non-binary p-ary m-sequences, whose levels are encoded with different shades of gray, as a more pleasant alternative than traditional binary codes. In this dataset, a total of 16 healthy participants engaged in BCI spelling tasks using five different p-ary m-sequences: binary GF(2^6) with a base of 2, GF(3^5) with a base of 3, GF(5^3) with a base of 5, GF(7^2) with a base of 7, and GF(11^2) with a base of 11. Each participant completed a single session that included a calibration phase consisting of 300 cycles (repetitions of the p-ary m-sequence), followed by an online spelling task of 32 trials (with 10 cycles per trial) for each condition. Online selections were made using a 4x4 command matrix (chance level of 6.25%), consisting of alphabetic characters from A to P. In addition, qualitative measures regarding visual fatigue and satisfaction were collected., Grupo de Ingeniería Biomédica, Departamento de Informática, Departamento de Teoría de la Señal y Comunicaciones e Ingeniería Telemática, TED2021-129915B-I00, RTC2019-007350-1, and PID2020-115468RB-I00, CIBER-BBN

Code-modulated visual evoked potentials (c-VEPs) are an innovative control signal utilized in brain-computer interfaces (BCIs) with promising performance. Prior studies on steady-state visual evoked potentials (SSVEPs) have indicated that the spatial frequency of checkerboard-like stimuli influences both performance and user experience. Spatial frequency refers to the dimensions of the individual squares comprising the visual stimulus, quantified in cycles (i.e., number of black-white squares pairs) per degree of visual angle. However, the specific effects of this parameter on c-VEP-based BCIs remained unexplored. In this dataset, a total of 16 healthy participants engaged in BCI spelling tasks using eight different conditions with varying spatial frequencies: C001 (0 c/°, 1×1 squares), C002 (0.15 c/°, 2×2 squares), C004 (0.3 c/°, 4×4 squares), C008 (0.6 c/°, 8×8 squares), C016 (1.2 c/°, 16×16 squares), C032 (2.4 c/°, 32×32 squares), C064 (4.79 c/°, 64×64 squares), and C128 (9.58 c/°, 128×128 squares). The system employed a binary m-sequence of 63 bits displayed at a 120 Hz rate using a black-background checkerboard (BB-CB) pattern; i.e. event “1” was encoded with a checkerboard pattern and “0” with a black flash. Each participant completed a single session that included a calibration phase consisting of 240 cycles (repetitions of the m-sequence), followed by an online spelling task of 18 trials (with 8 cycles per trial) for each condition. Online selections were made using a 3x3 command matrix (chance level of 11.11%)., Grupo de Ingeniería Biomédica, Departamento de Informática, Departamento de Teoría de la Señal y Comunicaciones e Ingeniería Telemática, TED2021-129915B-I00, RTC2019-007350-1, PID2020-115468RB-I00, and PID2021-127261OB-I00, Universidad de Málaga, Junta de Castilla y León, CIBER-BBN

Replication package for "A comparison of machine learning algorithms on design smell detection using balanced and imbalanced dataset: A study of God class"