La seguridad basada en el comportamiento

En todos los sectores productivos es importante gestionar la seguridad de los trabajadores, ello se logra mediante mecanismos de control, como el IPERC o diseños de ingeniería, sin embargo la tendencia actual se enfoca en la gestión del factor humano mediante la sensibilización. Los Programas de Seguridad Basada en el Comportamiento (SBC) son herramientas preventivas que permiten identificar comportamientos de riesgo y modificarlos. La base de este análisis radica en identificar los activadores (estos explican el no cumplimiento de las reglas establecidas). El incumplimiento (comportamiento inseguro) es conocido también como error humano, siendo estos involuntarios o voluntarios. Los Programas de SBC, permiten un cambio conductual siempre que la implementación se dé conforme a los siete principios de la SBC, una herramienta que permite entender dcho funcionamiento es la tricondicional de la seguridad (Poder, Saber y Querer). Así mismo es importante aclarar que la SBC trabaja bajo el modelo neo-conductista denominado ACC. El Objetivo de esta investigación es revisar casos de estudio que muestren la importancia de la implementación de esta herramienta para reducir los comportamientos inseguros y por ende la accidentabilidad. La información de autores como J. Reason, F. Betancur, R. Montero proviene de fuentes como Redalyc, Dialnet, por citar algunas, ha sido comparada con casos de estudio. Concluyendo que la implementación de un Programa de SBC permite alcanzar mejores resultados en materia de gestión de la Seguridad en el trabajo

Implementación del modelo de observación conductual aplicado a la seguridad (OCAS) para incrementar comportamientos seguros y reducir comportamientos inseguros en trabajadores de la minería polimetálica

La presente investigación se basa en los fundamentos teóricos de la corriente psicológica denominada conductismo y en los componentes de la herramienta preventiva de gestión denominada seguridad basada en el comportamiento (SBC), así mismo este estudio involucra la implementación del modelo de observación conductual aplicado a la seguridad (OCAS) para mejorar los indicadores de seguridad en la minería polimetálica, buscando en el corto plazo generar en los trabajadores el cambio de actitud (demostrado a través de sus comportamientos) en el trabajo y a largo plazo manifestado mediante la generación de una cultura de seguridad que el trabajador internalice y adopte como suya, llevando así el aprendizaje impartido por la organización a todos los aspectos de su vida cotidiana. Durante el desarrollo del presente estudio se mostrará el paso a paso del proceso de implementación del modelo de observación conductual aplicado a la seguridad (OCAS). Los resultados de esta implementación serán analizados posteriormente para validar la efectividad del proceso llevado a cabo en la minería polimetálica. El modelo de observación conductual aplicado a la seguridad (OCAS) busca que los comportamientos seguros de los trabajadores de la organización se incrementen gradualmente generando simultáneamente una disminución de los comportamientos inseguros de los mismos.Tesi

Magnetic structures of non-cerium analogues of heavy-fermion Ce2RhIn8: case of Nd2RhIn8, Dy2RhIn8 and Er2RhIn8

R2RhIn8 compounds (space group P4/mmm, R is a rare-earth element) belong to a large group of structurally related tetragonal materials which involves several heavy-fermion superconductors based on Ce. We have succeeded to grow single crystals of compounds with Nd, Dy and Er and following our previous bulk measurements, we performed neutron-diffraction studies to determine their magnetic structures. The Laue diffraction experiment showed that the antiferromagnetic order below the N\'eel temperature is in all three compounds characterized by the propagation vector k = (1/2, 1/2, 1/2). The amplitude and direction of the magnetic moments, as well as the invariance symmetry of the magnetic structure, were determined by subsequent experiments using two- and four-circle diffractometers. The critical exponents were determined from the temperature dependence of the intensities below TN.Comment: 10 pages, 7 figures, submitted to PR

Cascading effects of polyphenol-rich purple corn pericarp extract on pupal, adult, and offspring of tobacco hornworm (Manduca sexta L.)

A major bottleneck in the commercialization of plant-based pest management compounds is that the extraction methods are complex, time-consuming, and even highly expensive. Using a recently developed inexpensive extraction and quantification methodology to isolate polyphenols (including anthocyanins and condensed tannins) from purple corn pericarp, we examined their effects on Manduca sexta, a common insect herbivore. Following up on our previous work which demonstrated the negative impacts of polyphenol-rich extract on larval stages, we further examined whether there are any cascading effects on subsequent life stages (pupal and adult) including any possible transgenerational effects. Our results show that polyphenol-rich purple corn extract-fed caterpillars had significantly lower pupal mass and survival. Moreover, adult moths also had lower mass when eclosed from caterpillars reared on the extract diet. To test whether there were any transgenerational effects, we allowed male and female adults fed on purple corn extract diet and control diet to mate and lay eggs in a full factorial experiment. We found that purple corn extract-fed adult pair laid a lower number of eggs compared to other treatments. In addition, we also found that second instar M. sexta caterpillars hatched from eggs laid by any mating combination with at least one parent reared on purple corn extract gained significantly lower mass compared to caterpillars with both parents reared on the control diet. Taken together, our results show that there are cascading negative effects for feeding purple corn pericarp extract on pupal, adult, and second generation of M. sexta, reaffirming its potential application as a cost-effective and environmentally friendly pest deterrent

Digital-Analog Quantum Computation

Digital quantum computing paradigm offers highly-desirable features such as universality, scalability, and quantum error correction. However, physical resource requirements to implement useful error-corrected quantum algorithms are prohibitive in the current era of NISQ devices. As an alternative path to performing universal quantum computation, within the NISQ era limitations, we propose to merge digital single-qubit operations with analog multi-qubit entangling blocks in an approach we call digital-analog quantum computing (DAQC). Along these lines, although the techniques may be extended to any resource, we propose to use unitaries generated by the ubiquitous Ising Hamiltonian for the analog entangling block and we prove its universal character. We construct explicit DAQC protocols for efficient simulations of arbitrary inhomogeneous Ising, two-body, and $M$-body spin Hamiltonian dynamics by means of single-qubit gates and a fixed homogeneous Ising Hamiltonian. Additionally, we compare a sequential approach where the interactions are switched on and off (stepwise~DAQC) with an always-on multi-qubit interaction interspersed by fast single-qubit pulses (banged DAQC). Finally, we perform numerical tests comparing purely digital schemes with DAQC protocols, showing a remarkably better performance of the latter. The proposed DAQC approach combines the robustness of analog quantum computing with the flexibility of digital methods

Relevance of pleural adhesions for short- and long-term outcomes after lung volume reduction surgery

OBJECTIVE Pleural adhesions (PLAs) have been shown to be a possible risk factor for air leak after lung volume reduction surgery (LVRS), but the relevance of PLA for lung function outcome remains unclear. We analyzed our LVRS cohort for the influence of PLA on short-term (ie, prolonged air leak) and long-term outcomes. METHODS Retrospective observational cohort study with 187 consecutive patients who underwent LVRS from January 2016 to December 2019. PLA were defined as relevant if they were distributed extensively at the dorsal pleura; were present in at least at 2 areas, including the dorsal pleura; or present extensively at the mediastinal pleura. In patients with bilateral emphysema, bilateral LVRS was performed preferentially. The objectives were to quantify the association of PLA and rate of prolonged air leak (chest tube >7 days), and the association of PLA with postoperative exacerbations and with forced expiratory volume in 1 second 3 months postoperatively. The associations were quantified with odds ratios for binary outcomes, and with between-group differences for continuous outcomes. To account for missing observations, 100-fold multiple imputation was used. RESULTS PLAs were found in 46 of 187 patients (24.6%). There was a 32.6% rate of prolonged air leak (n = 61), mean chest tube time was 7.84 days. A total of 94 (50.3%) LVRSs were unilateral and 93 were bilateral. There was evidence for an association between PLA and the rate of prolonged air leak (odds ratio, 2.83; 95% CI, 1.36 to 5.89; P = .006). There was no evidence for an association between PLA and postoperative exacerbations (odds ratio, 1.11; 95% CI, 0.5 to 2.45; P = .79). There was no evidence for an association between PLA and forced expiratory volume in 1 second (estimate -1.52; 95% CI -5.67 to 2.63; P = .47). Both unilateral and bilateral LVRS showed significant postoperative improvements in forced expiratory volume in 1 second by 27% (8.43 units; 95% CI, 3.66-13.12; P = .0006) and by 28% (7.87 units; 95% CI, 4.68-11.06; P < .0001) and a reduction in residual volume of 15% (-33.9 units; 95% CI, -56.37 to -11.42; P = .003) and 15% (-34.9 units; 95% CI, -52.57 to -17.22; P = .0001), respectively. CONCLUSIONS Patients should be aware of potential prolongation of hospitalization due to PLA. However, there might be no relevant influence of PLA on lung function outcomes

Capturing Emerging Realities in Citizen Engagement in Science in Social Media : A Social Media Analytics Protocol for the Allinteract Study

In the digital era, social media has become a space for the socialization and interaction of citizens, who are using social networks to express themselves and to discuss scientific advances with citizens from all over the world. Researchers are aware of this reality and are increasingly using social media as a source of data to explore citizens' voices. In this context, the methods followed by researchers are mainly based on the content analysis using manual, automated or combined tools. The aim of this article is to share a protocol for Social Media Analytics that includes a Communicative Content Analysis (CCA). This protocol has been designed for the Horizon 2020 project Allinteract, and it includes the social impact in social media methodology. The novel contribution of this protocol is the detailed elaboration of methods and procedures to capture emerging realities in citizen engagement in science in social media using a Communicative Content Analysis (CCA) based on the contributions of Communicative Methodology (CM).Peer reviewe

Polyphenol-Rich Purple Corn Pericarp Extract Adversely Impacts Herbivore Growth and Development

Plant secondary metabolites such as terpenes, phenolics, glycosides, and alkaloids play various functional roles including pigmentation, foliar and floral volatile synthesis, hormonal regulation, and direct and indirect defenses. Among these, phenolic compounds are commonly found in plants, but vary in the distribution of their specific compounds among plant families. Polyphenols, including anthocyanins and tannins, are widely distributed and have been well documented for their roles- primarily in plant pigmentation and also in plant defenses. However, commercialization of such compounds for use in insect pest management is severely hampered by expensive, inefficient, and time-consuming extraction protocols. Using a recently developed inexpensive and easy extraction method using the byproducts of pigmented (purple) corn processing, we examined whether the crude pericarp extract rich in polyphenols can affect the growth and development of tobacco hornworm (Manduca sexta L.) caterpillars. Our findings show that purple corn pericarp extract negatively affected M. sexta egg hatching and larval mass gain and prolonged developmental time compared to regular yellow corn extract or an artificial control diet. We also found that these effects were more severe during the early stages of caterpillar development. These results conclusively demonstrate that purple corn pericarp, an inexpensive by-product of the corn milling industry, is a valuable product with excellent potential as an insect antifeedant