2,809 research outputs found
The difficult didactic transposition. A comparative study of the construction of social stereotypes from historiography to the classroom (Spain-France)
El objetivo de este trabajo es analizar la difícil transposición didáctica desde la historiografía al aula a través de una temática concreta: el mundo rural en la Edad Moderna en España y Francia. Para conseguir este objetivo se ha partido del estudio de la construcción historiográfica sobre el campesinado y el mundo rural en las principales revistas de investigación de esta temática. Posteriormente se ha comprobado la transmisión de este conocimiento en las aulas a través de las propuestas curriculares. Finalmente se ha analizado la percepción del alumnado sobre los estereotipos sociales ligados a esta temática. Los resultados muestran un desequilibrio importante entre la representación del mundo urbano y el mundo rural, fruto de la pervivencia de la teoría de la modernización en las explicaciones históricas.The objective of this paper is to analyze the difficult didactic transposition from the historiography to the classroom through a concrete issue: the rural world in the Early Modern Age in Spain and France. To achieve this objective, this paper start with the study of the historiographical construction of the peasantry and the rural world in the most representative journals. Second it has been verified the transmission of this knowledge in the classrooms through the curricular proposals. Finally we have analyzed the student's perception of the social stereotypes related to this subject. The results show a significant imbalance between the representation of the urban world and the rural world, consequence of the survival of the theory of modernization in historical explanations.Este trabajo es resultado del proyecto de investigación "Familia, desigualdad social y cambio generacional en la España centro-meridional, ss. XVI-XIX" (HAR2013-48901-C6-6-R) y EDU2015-65621-C3-2-R “La evaluación de las competencias y el desarrollo de capacidades cognitivas sobre historia en Educación Secundaria Obligatoria”, financiados ambos por el Ministerio de Economía y Competitividad y los fondos FEDER
Methods for autonomous wristband placement with a search-and-rescue aerial manipulator
A new robotic system for Search And Rescue (SAR) operations based on the automatic wristband placement on the victims’ arm, which may provide identification, beaconing and remote sensor readings for continuous health monitoring. This paper focuses on the development of the automatic target localization and the device placement using an unmanned aerial manipulator. The automatic wrist detection and localization system uses an RGB-D camera and a convolutional neural network based on the region faster method (Faster R-CNN). A lightweight parallel delta manipulator with a large workspace has been built, and a new design of a wristband in the form of a passive detachable gripper, is presented, which under contact, automatically attaches to the human, while disengages from the manipulator. A new trajectory planning method has been used to minimize the torques caused by the external forces during contact, which cause attitude perturbations. Experiments have been done to evaluate the machine learning method for detection and location, and for the assessment of the performance of the trajectory planning method. The results show how the VGG-16 neural network provides a detection accuracy of 67.99%. Moreover, simulation experiments have been done to show that the new trajectories minimize the perturbations to the aerial platform.Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tech
A new geometrical method for 3D evaluation of non-rigid registration methods for radiotherapy in prostate cancer
Three-dimensional conformal radiotherapy aims at delivering a high dose of radiation to the tumour, while sparing the surrounding normal tissue to a maximum extent. Image registration is an essential tool for monitoring radiation therapies, since allows morphological comparisons in presence of anatomic variations. The evaluation of non-rigid registration methods is very complicated owe to the absence of a known pointwise correspondence. The use of analysis of variations in target volume delineations has been proposed in the past for the evaluation of non-rigid registration methods. Delineation of the target volume is usually accomplished by outlining the contour of the volume in each separate tomographic slice. In the studies of reference, the 3D surface is rendered from the contours by means of a Delauney triangulation. This geometrical method only works correctly for convex structures. However the volumes involved on pelvic anatomy, such as bladder or prostate including the seminal vesicles, have relevant concavities that introduce a huge error in the evaluation. A new geometrical method for the evaluation of convex-concave target volumes delineation is proposed
The importance of e-recruitment in modern human resource management
No hace tanto tiempo que aún existían dudas acerca de si la contratación laboral
digitalizada o e-recruitment constituía una mera automatización del proceso por medio del último
software disponible o podía suponer algo más profundo para las empresas. la generalización de la
web 2.0 llevó a otro nivel los datos accesibles para las organizaciones contratantes, modificando así
el comportamiento tanto de las mismas como de los propios candidatos. pero ha sido la combinación
de estos datos con las modernas técnicas de people analytics las que han dejado patente que la
captación y selección de personal han sido definitivamente llevadas a otro nivel, lo que, al mismo
tiempo, conlleva nuevas obligaciones para las organizaciones empresariales. profundizar en estas
novedades y comprender sus implicaciones desde el punto de vista del derecho laboral, es el objeto
de las siguientes páginasNot so long ago, there were still doubts about whether e-recruitment was a simple
automation of the process using the latest available software or could mean something deeper for
companies. the generalization of web 2.0 took the data accessible to recruiting organizations to
another level, modifying the behavior of both the organizations and the candidates themselves. But
it has been the combination of these data with the modern techniques of people analytics that have
made it clear that the recruitment process has definitely been taken to another level, which, at the
same time, involves new obligations for companies. the aim of the following pages is to delve into
these new issues and understand their implications from the point of view of labour la
The Sustainable Management of Metals: An Analysis of Global Research
The objective of this study was to analyze research trends in the field of sustainable management of metals on a global level between 1993 and 2017. To do so, a bibliometric analysis was carried out on a total of 6967 articles. The results revealed the growing interest in this research field, particularly over the last five year-period during which 63% of all articles were published. The three journals in which most articles had been published were the Journal of Cleaner Production, ACS Sustainable Chemistry and Engineering, and Chemsuschem. The countries that published the most articles were China, the United States, India, Germany, and the United Kingdom. A sizeable network of collaboration has been established between countries for the joint publication of studies. The main lines of research have been focused on metal decontamination in water and soil, waste management oriented towards reuse and recycling, and the innovation of processes for cleaner and more efficient production. The results revealed the need for comprehensive studies that integrate different disciplines within the same analytical framework, and to promote research that contributes to the different dimensions of sustainability (environmental, economic, and social)
Effect of green Spanish-style Manzanilla packaging conditions on the prevalence of the putative probiotic bacteria Lactobacillus pentosus TOMC-LAB2
This work focuses on the persistence of the putative probiotic bacteria Lactobacillus pentosus TOMC-LAB2 on green Spanish-style Manzanilla olives according to different packaging conditions and storage temperatures. The lactic acid bacteria population decreased with time but the highest survival counts (and lowest yeasts) at the end of storage (8 months) were observed in plastic pouches under nitrogen atmosphere and glass jars with brine stored at 20°C. Molecular techniques showed a 100% presence of the putative probiotic bacteria in biofilms adhered to olive epidermis, while it was absent in PPB (plastic pouches with brine) and in olives stored at 7°C. No changes in NaCl, pH or combined acidity were observed during the storage except for a slight increase in titratable acidity at 20°C. The color of the fruits was stable but degraded at 20°C for olives in plastic pouches with brine.The research leading to these results has received funding from the EU's Seventh Framework Program (FP7/2007-2013) under grant agreement n°243471 (PROBIOLIVES) and the Junta de Andalucía (through financial support to group AGR-125). Thanks to JOLCA for supplying the fruits and the packages and to ASEMESA for its support. FNAL thanks the Spanish Government and CSIC for his Ramón y Cajal postdoctoral research contract, while VRG wishes to thank the AgriFood Campus of International Excellence (ceiA3), Bank of Santander, Spanish Government, and ‘Aloreña de Málaga’ Olive Manufacturing Association for her predoctoral fellowship (training program of PhD in companies).EUR 1,172 APC fee funded by the EC FP7 Post-Grant Open Access PilotPeer reviewe
Fortification of table olive packing with the potential probiotic bacteria Lactobacillus pentosus TOMC-LAB2
© 2014 Rodríguez-Gómez, Romero-Gil, García-García, Garrido-Fernández and Arroyo-López. Dairy products are currently the main carriers of probiotic microorganisms to the human body. However, the development of new matrices for probiotic delivery is convenient for intolerant to milk (or its derivatives) and those requiring low-cholesterol diet consumers. The present work focused on the fortification of previously fermented green Spanish style olives with the autochthonous putative probiotic bacteria Lactobacillus pentosus TOMC-LAB2. The fortification was carried out by inoculating the bacteria into the packing brines using Manzanilla fruits from three different processes: (i) spontaneously fermented (F1), (ii) fermented using L. pentosus TOMC-LAB2 as starter (F2), and (iii) spontaneously fermented and then thermally treated (F3). Data showed that all inoculated treatments had higher population levels (5.49, 4.41, and 6.77 log10 cfu/cm2) than their respective controls (1.66, 4.33, and 0.0 log10 cfu/cm2, for F1, F2, and F3 treatments, respectively). The presence of L. pentosus TOMC-LAB2 on olive surface was confirmed by rep-PCR, with a recovery frequency at the end of the shelf life (200 days) of 52.6, 57.9, and 100.0% for F1, F2, and F3 treatments, respectively. Thus, results obtained in this work show the ability of this microorganism to survive under packing conditions for long period of times as well as to colonize the olive surface which is the food finally ingested by consumers. This opens the possibility for the development of a new and simply probiotic fortified olive product.he research leading to these results has received funding from the EU’s Seventh Framework Programme [FP7/2007-2013] under grant agreement no 243471 (PROBIOLIVES). We also thank the Spanish Government for financial support (projects AGL2009-07436/ALI, and AGL2010-15529/ALI partially financed by European regional development funds, ERDF), and the Junta de Andalucía (through financial support to group AGR-125). Thanks to JOLCA and ASEMESA for supplying the fruits and their own expertise for the development of this work. Francisco N. Arroyo-López wishes to express thanks for his Ramón y Cajal postdoctoral research contract (Spanish government).Peer Reviewe
Associations between sedentary time, physical activity and bone health among older people using compositional data analysis
Introduction : Aging is associated with a progressive decrease in bone mass (BM), and being physical active is one of the main strategies to combat this continuous loss. Nonetheless, because daily time is limited, time spent on each movement behavior is co-dependent. The aim of this study was to determine the relationship between BM and movement behaviors in elderly people using compositional data analysis.
Methods : We analyzed 871 older people [395 men (76.9 +/- 5.3y) and 476 women (76.7 +/- 4.7y)]. Time spent in sedentary behavior (SB), light physical activity (LPA) and moderate-to-vigorous physical activity (MVPA), was assessed using accelerometry. BM was determined by bone densitometry (DXA). The sample was divided according to sex and bone health indicators.
Results : The combined effect of all movement behaviors (PA and SB) was significantly associated with whole body, leg and femoral region BM in the whole sample (p<0.05), with leg and pelvic BM (p<0.05) in men and, with whole body, arm and leg BM (p<0.05) in women. In men, arm and pelvic BM were negatively associated with SB and whole body, pelvic and leg BM were positively associated with MVPA (p<0.05). In women, whole body and leg BM were positively associated with SB. Arm and whole body BM were positively associated and leg BM was negatively associated with LPA and arm BM was negatively associated with MVPA (p<0.05). Women without bone fractures spent less time in SB and more in LPA and MVPA than the subgroup with bone fractures.
Conclusion : We identified that the positive effect of MVPA relative to the other behaviors on bone mass is the strongest overall effect in men. Furthermore, women might decrease bone fracture risk through PA increase and SB reduction, despite the fact that no clear benefits of PA for bone mass were found
Electric and magnetic dipolar response of Germanium spheres: Interference effects, scattering anisotropy and optical forces
We address the scattering cross sections, and their consequences, for
submicrometer Germanium spheres. It is shown that there is a wide window in the
near infrared where light scattering by these particles is fully described by
their induced electric and magnetic dipoles. In this way, we observe remarkable
anisotropic scattering angular distributions, as well as zero forward or
backward scattered intensities, which until recently was theoretically
demonstrated only for hypothetically postulated magnetodielectric spheres.
Also, interesting new effects of the optical forces exerted on these objects
are now obtained.Comment: 13 pages, 4 figure
Multimedia Analysis of Spanish Female Role Models in Science, Technology, Engineering and Mathematics
Horizontal segregation in the higher education framework is a problem that goes up in the
work environment. Women are assuming traditional gender roles due to phenomena such as the
threat of stereotyping, which prevents them from opting for higher studies in science, technology, engineering
and mathematics (STEM). This research work arises within the project W-STEM, “Building
the Future of Latin America: Involving Women in STEM”. The research aims to investigate women’s
academic and professional development in science, technology, engineering and mathematics (STEM)
through their personal experience in making career-related decisions. The research was developed
by applying a qualitative method. During the year 2020, video semi-structured interviews were
conducted with twenty-one women professionals in the STEM field. Of the twenty-one participants,
six are linked to science, eight to technology, fifteen to engineering and one to mathematics. Due to
their research lines, some of them are located in more than one STEM area, for example, in technology
and engineering. These women were interviewed about their choice of studies and training, their
jobs, professional achievements, family and social environment and their perspective on the gender
gap in STEM. They all agree on horizontal segregation and consider it necessary to motivate girls
and young women to study what they like. Furthermore, they all show passion for their work
- …