An individually fitted physical barrier device as a tool to restrict the birds’spatial access: can their use alter behavioral responses?

In this work we introduce an hp finite element method for two-dimensional Poisson problems on curved domains using curved elements. We obtain a priori  error estimates and define a local a posteriori error estimator of residual type.We show,  under appropriate assumptions about the curved domain, the globalreliability and the local efficiency of the esimator. More precisely, we prove that theestimator is equivalent to the energy norm of the error up to higher order terms. The equivalence constant of the efficiency estimate depends on the polynomial degree.We also present an hp adaptive algorithm and several numerical tests which show the performance of the adaptive strategy.Fil: Pellegrini, Stefanía. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones Biológicas y Tecnológicas. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales. Instituto de Investigaciones Biológicas y Tecnológicas; ArgentinaFil: Marin, Raul Hector. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones Biológicas y Tecnológicas. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales. Instituto de Investigaciones Biológicas y Tecnológicas; ArgentinaFil: Guzmán, Diego Alberto. Aarhus University. Aarhus Institute Of Advanced Studies.; Dinamarca. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones Biológicas y Tecnológicas. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales. Instituto de Investigaciones Biológicas y Tecnológicas; Argentin

Japanese quail classified by their permanence in proximity to a high or low density of conspecifics: a search for underpinning variables

Test of sociality in poultry is mainly based on the bird's individual ability to make quick social discriminations. In recent years, a density-related permanence (DRP) test has been developed that enables us to classify young birds (while in groups) according to their individual permanence in proximity to either a high or low density of conspecifics (HD or LD, respectively). Thus, the result of the classification depends not only on the bird's individual response but also on the outcome of the social interactions within the whole group. The birds' performance in DRP was associated with underlying differences in social responses of their individuals. Quails in homogeneous groups of LD residents responded with less compact groups and higher levels of agonistic interactions to the presence of an intruder and showed higher levels of agonistic interactions among cage-mates than the homogeneous groups of HD birds. An acute stressor also induced a higher corticosterone response in the LD birds than in their HD counterparts. The present study addressed the question of whether contrasting DRP performance by Japanese quail can also reflect underlying differences in fearfulness and social reinstatement responses. Thus, LD and HD categorized juvenile birds underwent one of the following tests: tonic immobility (TI), open-field (OF), or a one-way runway. Results showed that HD birds required more inductions and developed shorter responses (P ≤ 0.05) in the TI test and walked more, faster, and greater distances in the OF (P ≤ 0.05) than their LD counterparts. No differences between groups were found in short social reinstatement responses. The present findings suggest that underlying fearfulness is lower in the HD than in the LD birds. A reduced fearfulness could be regarded as an additional favorable trait of the HD-classified quail to cope with environmental challenging situations.Fil: Guzmán, Diego Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones Biológicas y Tecnológicas. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales. Instituto de Investigaciones Biológicas y Tecnológicas; Argentina. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto de Ciencias y Tecnología de los Alimentos; ArgentinaFil: Kembro, Jackelyn Melissa. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones Biológicas y Tecnológicas. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales. Instituto de Investigaciones Biológicas y Tecnológicas; Argentina. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto de Ciencias y Tecnología de los Alimentos; ArgentinaFil: Marin, Raul Hector. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones Biológicas y Tecnológicas. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales. Instituto de Investigaciones Biológicas y Tecnológicas; Argentina. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto de Ciencias y Tecnología de los Alimentos; Argentin

The Effect of Thermal Ageing on the Mechanical Properties of Natural Rubber-based Compounds Used for Rubber Bearings

Molecular changes due to high temperatures, sunlight, and oxygen, deteriorate the physical properties of rubber compounds, yielding additional crosslinks and molecular chain breakdown. Since oxidative degradation is the most important factor that determines the durability of rubber components, this study evaluated the mechanical behavior of rubber compounds exposed to accelerated thermal ageing. Therefore, three carbon black-reinforced natural rubber-based compounds typically used for rubber bearings were exposed to thermal oxidation and their mechanical properties under typical loading states were assessed through standardized tests. Significant differences were found due to thermal ageing in the compressive modulus, compression set, and creep compliance in compression, exhibiting a stiffening effect caused by additional crosslinks. However, no significant differences were observed in hardness, which is a superficial measurement and a typical test in the rubber industry to characterize rubber compounds. Therefore, the assessment of ageing in rubber bearings should not be limited to a hardness test, which is required in design standards but also addresses compressive, cyclic, and transient tests. The results obtained in this study can be considered in the design process of rubber bearings by limiting the allowable compressive stress and creep deflection due to ageing effects

High-resolution behavioral time series of Japanese quail within their social environment

The behavioral dynamics within a social group not only could depend on individual traits and social-experience of each member, but more importantly, emerges from inter-individual interactions over time. Herein, we first present a dataset, as well as the corresponding original video recordings, of the results of 4 behavioral tests associated with fear and aggressive response performed on 106 Japanese quail. In a second stage, birds were housed with conspecifics that performed similarly in the behavioral tests in groups of 2 females and 1 male. By continuously monitoring each bird in these small social groups, we obtained time series of social and reproductive behavior, and high-resolution locomotor time series. This approach provides the opportunity to perform precise quantification of the temporal dynamics of behavior at an individual level within different social scenarios including when an individual showing continued aggressive behaviors is present. These unique datasets and videos are publicly available in Figshare and can be used in further analysis, or for comparison with existing or future data sets or mathematical models across different taxa.Fil: Caliva, Jorge Martín. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones Biológicas y Tecnológicas. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales. Instituto de Investigaciones Biológicas y Tecnológicas; ArgentinaFil: Alcala, Rocio Soledad. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto de Ciencias y Tecnología de los Alimentos; ArgentinaFil: Guzmán, Diego Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones Biológicas y Tecnológicas. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales. Instituto de Investigaciones Biológicas y Tecnológicas; ArgentinaFil: Marin, Raul Hector. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones Biológicas y Tecnológicas. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales. Instituto de Investigaciones Biológicas y Tecnológicas; ArgentinaFil: Kembro, Jackelyn Melissa. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones Biológicas y Tecnológicas. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales. Instituto de Investigaciones Biológicas y Tecnológicas; Argentin

Improvement Proposal To Increase Productivity Of A SME In The Primary Manufacturing Sector Using Standardized Labor and TPM Tools

The case study is situated in an SME in the primary manufacturing sector and focuses on increasing its productivity using lean manufacturing tools. First, productivity was identified at 15%, while the average for the sector was 25%, causing a negative economic impact of approximately U$301,309 per year. Through the diagnosis, it was found that the main reasons were machine downtime, caused by various factors such as unplanned downtime and maintenance; the second reason was inadequate sorting of raw material, due to the lack of standardized procedures, lack of protocols, and disorder in the sorting area. To address these problems, an improvement model was developed based on 5S tools, standardized work, and TPM (autonomous and preventive maintenance). To validate the model, a pilot project of 5S tools and standardized work was carried out through an internal audit conducted before implementing the tool and after its application, an increase in 5S compliance from 29% to 84% was evidenced. Likewise, the standardized work pilot reduced the cycle time of the raw material classification activity from 708 to 539 seconds thanks to the implementation of a procedures format that standardized the process and eliminated activities with no added value. Regarding TPM, it was validated using Arena software, achieving a 2% improvement in OEE and therefore a 19.4% increase in productivity

Design of a New Distributed NoSQL Database with Distributed Hash Tables.

[EN]Databases play a fundamental role in today’s world, being used by most companies, especially those that offer services through the Internet. Today there is a wide variety of database models, each adapted for use according to the specific requirements of each application. Traditionally, the relational models with centralized architectures have been used mostly due to their simplicity and general-purpose query language, which made relational systems suitable for almost any application. However, with the growth of the Internet in recent decades, both in the number of users and in the amount of information, those centralized models began to suffer availability and scalability issues. To address those issues, the use of decentralized architectures and alternative database models began to arise, eventually replacing relational databases and centralized architectures when the requirements on availability and scalability are high. Those database models alternative to the traditional relational model are grouped under the name of NoSQL (Not only Structured Query Language). In this article, we present a NoSQL database developed as an end of degree work, with a f lexible data model based on documents and a fully decentralized architecture based on the Gossip protocol for node discovery and a distributed hash table, in particular the rendezvous hashing algorithm, used to distribute and replicate the data across all the nodes. The main goals of the system are to achieve high availability (the data should be almost always accessible) and high scalability (the system should be able to scale by increasing the number of nodes to increase its capacity both on data and number of users). High availability is achieved thanks to the replication of the data, while high scalability is achieved by its decentralized architecture, which allows multiple entry points from the requests, and the data distribution, effectively increasing the database capacity by increasing the number of nodes

Asistiendo a la reintroducción de vizcachas (Lagostomus maximus): ¿Cómo aumentar el área de pastoreo seguro?

La reintroducción de mamíferos fosoriales coloniales en sitios con madrigueras de uso permanente podría estar limitada por disponibilidad de madrigueras satélite donde refugiarse de los depredadores mientras se alimentan, y por disponibilidad de pastos cortos. A fin de generar información para asistir a la reintroducción de vizcachas (Lagostomus maximus), nos preguntamos: 1) ¿qué madrigueras satélite aceptan en función de su complejidad, el tamaño de la entrada y la distancia a madrigueras de uso permanente?, y 2) ¿cómo es afectada el área de pastoreo por la provisión de madrigueras y el corte de pasto? Realizamos el estudio en las Sierras de Córdoba con 13 vizcachas trasladadas a dos corrales de adaptación equipados con madrigueras permanentes. Cavamos 14 madrigueras satélite de dos tipos: simples con solo un túnel y complejas con túnel y cámara subterránea, todas ubicadas a distancias de 1 a 16 m de los corrales de adaptación. Además, cortamos parte de la vegetación. Por seis meses luego de la liberación evaluamos el grado de ocupación de madrigueras satélite. Además estimamos número de heces, suelo desnudo y altura de la vegetación en transectas de 15 m de largo con origen en las madrigueras más usadas que estaban repartidas en dos sectores. El grado de ocupación fue de 2 y 67% para las madrigueras satélite simples y complejas, respectivamente, y se relacionó negativamente con el tamaño de la entrada a la madriguera compleja. No hubo relación entre el grado de ocupación de la madriguera y la distancia a los corrales. El muestreo en transectas reveló que 91% de las heces contabilizadas estaban a 4 m o menos de las madrigueras más usadas, y que preferían el pasto cortado al no cortado. Concluimos que para aumentar área de pastoreo es conveniente construir madrigueras satélite complejas y cortar el pasto.Fil: Renison, Daniel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones Biológicas y Tecnológicas. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales. Instituto de Investigaciones Biológicas y Tecnológicas; ArgentinaFil: Cingolani, Ana María. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto Multidisciplinario de Biología Vegetal. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto Multidisciplinario de Biología Vegetal; ArgentinaFil: Contarde, Cecilia Belén. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones Biológicas y Tecnológicas. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales. Instituto de Investigaciones Biológicas y Tecnológicas; ArgentinaFil: Guzmán, Diego Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones Biológicas y Tecnológicas. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales. Instituto de Investigaciones Biológicas y Tecnológicas; Argentin

Intubación submentoniana como alternativa a la traqueostomía en traumatismo craneofacial grave: a propósito de un caso

The present study outlines airway management through a submental approach in a patient with severe craniofacial trauma diagnosed with LeFort III fracture. The case was discussed in a multidisciplinary session to determine intraoperative airway management, ultimately opting for submental intubation over tracheostomy to prevent complications associated with the latter. Following asleep orotracheal intubation using a fiberoptic bronchoscope, a paramedial submental approach was employed. Once intermaxillary fixation was established, fractures were subjected to osteosynthesis. Post-surgery, submental intubation was converted back to orotracheal. Given the extensive inflammation at the base of the mouth, it was decided to maintain intubation for the next 12 hours, followed by uncomplicated extubation. Submental intubation emerges as a secure and effective option in managing patients with complex maxillofacial fractures, thereby obviating the need for tracheostomy and its associated risks.El presente trabajo describe el manejo de la vía aérea mediante abordaje submentoniano en un paciente con traumatismo craneofacial grave diagnósticado de fractura LeFort III. El caso se presentó en sesión multidisciplinar para decidir el manejo de la vía aérea intraoperatoria entre traqueostomía o intubación submentoniana. Se decidió la segunda para evitar complicaciones asociadas a la traqueostomía. Tras proceder a la intubación orotraqueal dormido con fibrobronscoscopio, se realiza abordaje submentoniano paramedial. Una vez establecida la fijación intermaxilar se procedió a la osteosíntesis de las fracturas. Finalizada la cirugía se reconvirtió la intubación submentoniana a orotraqueal. Dada la extensa inflamación de la base de la boca se decidió mantener intubado las siguientes 12 horas, procediendo entonces a la extubación sin complicaciones. La intubación submentoniana es una opción segura y efectiva en el manejo de pacientes con fracturas maxilofaciales complejas, evitando así la necesidad de una traqueostomía y sus riesgos asociados

Análisis comparativo de la medición de aciertos en el reconocimiento de voz ante la presencia de ruido blanco usando los dispositivos de “google assistant” y “Alexa

En este trabajo se presentó un estudio que tiene por finalidad el análisis y comparación de aciertos entre los asistentes de reconocimiento de voz más utilizados “Google Assistant” y “Alexa” sometidos ante la presencia del ruido blanco, para esto se aplicó un diseño experimental basado en la utilización de los 10 comandos más usados por los usuarios en cada uno de los asistentes virtuales, con estos comandos se procedió a realizar las pruebas tanto con hombres y mujeres a las distancias de 1m, 1.5m y 2m de los dispositivos de reconocimiento de voz; y para cada una de las distancia se emitieron 14 intensidades diferentes de ruido blanco manteniendo siempre la distancia de 0.05m del emisor del ruido al receptor. Los resultados de estas mediciones arrojaron que el dispositivo Alexa tuvo un mejor desempeño al obtener 55% de los aciertos con respecto a Google Assistant que obtuvo un 47% por lo que, se concluye que Alexa en este análisis respecto al ruido blanco es superior al de Google AssistantIn this work, a study was presented whose purpose is the analysis and comparison of successes between the most used voice recognition assistants ""Google Assistant"" and ""Alexa"" subjected to the presence of white noise, for this an experimental design was applied based on the use of the 10 commands most used by users in each of the virtual assistants, with these commands the tests were carried out with both men and women at distances of 1m, 1.5m and 2m from the recognition devices of voice; and for each of the distances, 14 different intensities of white noise were emitted, always maintaining a distance of 0.05m from the noise emitter to the receiver. The results measured showed that the Alexa device had a better performance by obtaining 55% of the correct answers with respect to Google Assistant which obtained 47%, therefore, it is concluded that Alexa in this analysis with respect to white noise is superior to that of Google Assistant.Tesi