Evaluación del desajuste educativo en la industria hostelera española

For decades, academics have studied the human resources of many different sectors with a wide range of approaches and methodologies. However, there is still room for analysis on educational mismatch, even more so in the hospitality industry after the COVID-19 pandemic standstill as it is a topic that has been somewhat relegated in recent times. Thus, this study seeks to analyze this phenomenon based on a multinomial logistic regression, which is underused in the human capital-related literature, especially on educational mismatch. The results confirm the influence of several factors such as tenure, experience or skills and quantify their effects on the chances of being educationally mismatched. Moreover, special attention is given to the remarkable influence of the required skills for a specific job position on vertical mismatch. Therefore, this paper updates previous research on the issue but also sheds new light on identifying the main aspects in which employees may focus in order to have better career prospects. The main limitation of this study is the availability of the data, which corresponds to 2018.Durante décadas, los académicos han estudiado los recursos humanos de muchos sectores diferentes con una amplia gama de enfoques y metodologías. Sin embargo, todavía hay espacio para el análisis del desajuste educativo, más aún en la industria de la hostelería tras el parón de la pandemia COVID-19, ya que es un tema que ha quedado ligeramente relegado en los últimos tiempos. Así pues, este estudio pretende analizar este fenómeno a través de una regresión logística multinomial, una metodología que se encuentra infrautilizada en la literatura relacionada con el capital humano, especialmente en el desajuste educativo. Los resultados confirman la influencia de varios factores, como la antigüedad en el puesto, la experiencia o las competencias, y cuantifican sus efectos sobre las posibilidades de sufrir desajuste educativo. Además, se presta especial atención a la gran influencia de las competencias requeridas para un puesto de trabajo específico sobre el desajuste vertical. Así pues, este trabajo actualiza las investigaciones anteriores sobre la cuestión, pero también arroja nueva luz sobre la identificación de los principales aspectos en los que los empleados podrían prestar atención para tener mejores perspectivas de carrera. La principal limitación de este trabajo es la disponibilidad de los datos, que corresponden a 2018.Sánchez-Cubo, F. benefits from a predoctoral contract for training researcher staff within the frame of the Formación de Profesorado Universitario (FPU) Fellowship Programme of the Ministry of Universities of Spain

Modelado y simulación basada en agentes de hábitos de compra e ingesta de alimentos, en entornos de monitorización no intrusiva

En este artículo se presenta una simulación de hábitos de compra e ingesta, en un entorno de monitorización no intrusivo. Se busca aumentar la eficacia de las actuaciones sobre los hábitos alimentarios. La simulación se usa para obtener datos equivalentes a los que proporcionaría un entorno domiciliario de inventariado de productos alimentarios, soportado por tecnología RFID; y determinar las condiciones de mínimo muestreo que mejoren la fiabilidad de los datos de ingesta, en comparación con los que se obtienen a través de los cuestionarios de seguimiento, que se emplean en la actual metodología de valoración de calidad de la dieta

Video-based assistance system for training in minimally invasive surgery

In this paper, the development of an assisting system for laparoscopic surgical training is presented. With this system, we expect to facilitate the training process at the first stages of training in laparoscopic surgery and to contribute to an objective evaluation of surgical skills. To achieve this, we propose the insertion of multimedia contents and outlines of work adapted to the level of experience of trainees and the detection of the movements of the laparoscopic instrument into the monitored image. A module to track the instrument is implemented focusing on the tip of the laparoscopic tool. This tracking method does not need the presence of artificial marks or special colours to distinguish the instruments. Similarly, the system has another method based on visual tracking to localize support multimedia content in a stable position of the field of vision. Therefore, this position of the support content is adapted to the movements of the camera or the working area. Experimental results are presented to show the feasibility of the proposed system for assisting in laparoscopic surgical training

El tentaero : boceto lírico dramático en un prólogo y tres cuadros

Copia digital. Valladolid : Junta de Castilla y León. Consejería de Cultura y Turismo, 201

Laparoscopic image analysis for automatic tracking of surgical tools

Laparoscopy is a surgical technique nowadays embedded in the clinical routine. Recent researches have been focused on analysing video information captured by the endoscope for extracting cues useful for surgeons, such as depth information. In particular, the 3D pose estimation of the surgical tools presents three important added values: (1) to extract objective parameters for the surgical training stage, (2) to develop an image-guided surgery based on the knowledge of the surgery tools localization, (3) to design new roboticsystems for an automatic laparoscope positioning, according to the visual feedback. Tool’s shape and orientation in the image is the key to get its 3D position. This work presents an image analysis for automatic laparoscopic tool’s detection along the recorded video without extra tool markers, using an edges detection strategy. Also, this analysis includes a previous stage of barrel distortion correction for videoendoscopic image

Oral squamous cell carcinoma of tongue: Histological risk assessment. A pilot study

Background: More than 90% of malignant tumors diagnosed in the oral cavity are Oral Squamous Cell Carcinomas (OSCC) whose preferred location is the tongue. Classically, this disease has affected men preferentially, although recent studies suggest that trends are changing and the proportion of women with OSCC is increasing. In addition, the prevalence of oral cancer is also determined by some risk factors as alcohol consumption and tobacco. Currently, the Tumor, Node, Metastasis (TNM) classification is employed to defined tumor stage and based on this guide specific treatments are established. However, 5-year-survival does not exceed 50% of cases. The objective of this study is to determine whether a histological risk pattern indicative of higher recurrence might be present in T1-T2 tumors located in the anterior two thirds of the tongue. Material and Methods: Samples from 26 patients with OSCC were analyzed and histological risk pattern of recurrent and non-recurrent tumors were compared. We have analyzed histological variables described in Anneroth and Brandwein-Gensler classifications. Additionally, we have also examined both clinical variables such as age, sex or comorbidities, as well as habits such as tobacco or alcohol consumption. Results: We found that sex (male) and keratinization degree (high or moderate) are directly related with OSCC recurrence. In fact, free illness time is lower in men and higher in those cases with minimal or no keratinization. Conclusions: Based on the variables analyzed, it has not been possible to establish a histological risk pattern that, complementary to the TNM classification, could have a predictive role in these early-stage tongue carcinoma

Evaluation of the of the extract of seeds Citrus paradisi for inhibition of Vibrio parahaemolyticus in Litopenaeus vannamei

Los cultivos larvales de Litopenaeus vannamei presentan altas mortalidades por la presencia del patógeno Vibrio parahaemolyticus, siendo combatido con antibióticos, lo que genera presión de selección y resistencia bacteriana. Por lo que se evaluó el extracto en testas de Citrus paradisi para inhibir la proliferación de V. parahaemolyticus y mejorar la supervivencia de L. vannamei, realizado en la Pontificia Universidad Católica del Ecuador Sede Manabí, durante octubre y diciembre 2019. Por ello, se realizaron ensayos de concentración mínima inhibitoria CMI, movilidad, crecimiento, biopelícula y toxicidad realizadas con postlarvas de L. vannamei. Los resultados demuestran inhibición del crecimiento bacteriano a diferentes concentraciones; la actividad en CMI se observó a 43 mg/ ml de extracto; para el ensayo de movilidad, biopelícula y crecimiento bacteriano la inhibición resulta a 5,3 mg/ml. toxicidad determina que sometidas a concentraciones de 0,08-0,325 mg/ml mantienen una supervivencia del 60%, pero en concentraciones de 0,650 mg/ml la supervivencia disminuye a 33%, comprobándose que concentraciones altas son más tóxicas para las postlarvas. Se concluye que, en concentraciones elevadas, el extracto de C. paradisi inhibe la proliferación bacteriana del patógeno V. parahaemolyticus, siendo recomendable su uso como desinfectante en instalaciones para el cultivo larvario de L. vannamei.This quantitative research study assessed the potential of Citrus paradisi seed extract to inhibit the proliferation of Vibrio parahaemolyticus and improve the survival of Litopenaeus vannamei in vitro. Farming of white shrimp L. vannamei has high mortality rates because of the presence of the pathogenic V. parahaemolyticus, which is treated with antibiotics, and this produces selection pressure and antibiotic resistance. Accordingly, this research was carried out in the microbiology laboratory at Pontificia Universidad Católica del Ecuador, Manabí from October through December 2019. There were conducted some assays of minimum inhibitory concentration –MIC– Test, motility, growth, biofilm, and toxicity with L. vannamei postlarvae. The findings reveal that there is inhibition of bacterial growth in the assays at different concentrations; the activity in MIC is seen in 43 mg/ml of extract, and in the motility assay the inhibition corresponds to 2,6 mg/ml. In bacterial growth assays, concentrations of 5,3 mg/ml cause inhibition, whereas in biofilms inhibition occurs at 2,6 mg/ml. By working to improve survival of larvae, toxicity testing show that when they are subjected to concentrations ranging from 0,08 to 0,325 mg/ml, they have larval survival up to 60%, but with concentrations of 0,650 mg/ml, larval survival decreases by 33%; this determines that higher concentrations are more toxic for postlarvae. It is concluded that high concentrations of C. paradisi seed extract do inhibit bacterial proliferation of V. parahaemolyticus, and it is recommended as a disinfectant in facilities of L. vannamei larval farming

Una aproximación al estudio de la formación de los precios en el mercado de acampamentosturísticos

The camping resort in Spain is a subsector of accommodation that has a growing dynamism. Despite this, and its quantitative importance in the Spanish tourism industry, there are very few scientific papers have paid attention. The aim of this paper is to analyze the mechanisms of price formation in this tourist activity, for which it has used a hedonic price model with semi-logarithmic functional form. The results highlight the importance of the geographical location of the establishment as well as its official classification in the valuation of its price by tourists.El acampamento turístico en España es un subsector de alojamiento que presenta un dinamismo creciente. A pesar de ello, y de su importancia cuantitativa en el turismo español, son muy escasos los trabajos científicos que le han prestado su atención. El objetivo de este trabajo consiste en analizar los mecanismos de formación de los precios dentro de esta actividad turística, para lo cual se ha empleado un modelo hedónico de precios con forma fun- cional semilogarítmica. Los resultados ponen de manifiesto la importancia de la ubicación geográfica del establecimiento así como la calificación oficial del mismo en la valoración de su precio por parte de los turistas

An analytical approach to the design of liquid crystal microlenses

[Poster of]: 40th Topical Meeting on Liquid Crystals, Paderborn from March 20th-22nd, 2013.New analytical expressions for designing liquid crystal microlenses have been proposed. Equations involved, based on a novel equivalent electric circuit, lead to optimum designs of liquid crystal lenses which lens diameter ranges from few micrometers to one millimeter. A particular mathematical relationship between the microlens thickness and diameter is the key parameter to achieving a quasi-parabolic phase distribution across the microlens diameter. Frank-Oseen equations have been used for modeling and solving the problem. A solution for the elastic constants of a hypothetic liquid crystal, proper for a microlens device, is proposed. Manufacturing parameters of the lenses have been designed for fulfilling focal length and diameter requirements. Some of them are the thickness, the electrode configuration, and the driving scheme (modal or hole patterned). A set of liquid crystal microlenses has been manufactured and an electrooptic characterization has been carried out in order to compare the measurements with the analytical approach.This work was supported in part by the “Ministerio de Ciencia e Innovación” of Spain (grant no.TEC2009-13991-C02-01) and Comunidad de Madrid (grant no. FACTOTEM2 S2009/ESP-1781).No publicad

An autostereoscopic device for mobile applications based on a liquid crystal microlens array and an OLED display

In recent years, many experimental and theoretical research groups worldwide have actively worked on demonstrating the use of liquid crystals (LCs) as adaptive lenses for image generation, waveform shaping, and non-mechanical focusing applications. In particular, important achievements have concerned the development of alternative solutions for 3D vision. This work focuses on the design and evaluation of the electro-optic response of a LC-based 2D/3D autostereoscopic display prototype. A strategy for achieving 2D/3D vision has been implemented with a cylindrical LC lens array placed in front of a display; this array acts as a lenticular sheet with a tunable focal length by electrically controlling the birefringence. The performance of the 2D/3D device was evaluated in terms of the angular luminance, image deflection, crosstalk, and 3D contrast within a simulated environment. These measurements were performed with characterization equipment for autostereoscopic 3D displays (angular resolution of 0.03 )