Short-term trajectories of workplace bullying and its impact on strain: A latent class growth modeling approach

The aim of this weekly diary study was (a) to identify trajectories of workplace bullying over time and (b) to examine the association of each cluster with strain indicators (i.e., insomnia and anxiety/depression). A sample of 286 employees during 4 weeks of data was used (N occasions = 1,144). Results of latent class growth modeling showed that 3 trajectories could be identified: a nonbullying trajectory, which comprised 90.9% of the sample; an inverted U trajectory; and a delayed increase bullying trajectory; the latter two each had 4.2% of the participants. We found a significant interaction between time and trajectories when predicting insomnia and anxiety/depression, with each strain showing a differential pattern with each trajectory. It seems that the negative effects on insomnia are long-lasting and remain after bullying has already decreased. In the case of anxiety and depression, when bullying decreases strain indicators also decrease. In this study, by examining trajectories of bullying at work over time and their associations with strain, we provide new insights into the temporal dynamics of workplace bullying

Purely Flavored Leptogenesis

peer reviewedWe study a model for leptogenesis in which the total CP asymmetries in the decays and scatterings involving the SU(2) singlet seesaw neutrinos Nα vanish (ϵNα=0). Leptogenesis is possible due to nonvanishing CP violating lepton flavor asymmetries, realizing a situation in which the baryon asymmetry is due exclusively to flavor effects. We study the production of a net lepton asymmetry by solving the Boltzmann equations specific to this model, and we show that successful leptogenesis can be obtained at a scale as low as the TeV. We also discuss constraints on the model parameter space arising from current experimental upper limits on lepton flavor violating decays

Numerical Model for the Determination of Erythrocyte Mechanical Properties and Wall Shear Stress in vivo From Intravital Microscopy.

The mechanical properties and deformability of Red Blood Cells (RBCs) are important determinants of blood rheology and microvascular hemodynamics. The objective of this study is to quantify the mechanical properties and wall shear stress experienced by the RBC membrane during capillary plug flow in vivo utilizing high speed video recording from intravital microscopy, biomechanical modeling, and computational methods. Capillaries were imaged in the rat cremaster muscle pre- and post-RBC transfusion of stored RBCs for 2-weeks. RBC membrane contours were extracted utilizing image processing and parametrized. RBC parameterizations were used to determine updated deformation gradient and Lagrangian Green strain tensors for each point along the parametrization and for each frame during plug flow. The updated Lagrangian Green strain and Displacement Gradient tensors were numerically fit to the Navier-Lame equations along the parameterized boundary to determined Lame's constants. Mechanical properties and wall shear stress were determined before and transfusion, were grouped in three populations of erythrocytes: native cells (NC) or circulating cells before transfusion, and two distinct population of cells after transfusion with stored cells (SC1 and SC2). The distinction, between the heterogeneous populations of cells present after the transfusion, SC1 and SC2, was obtained through principle component analysis (PCA) of the mechanical properties along the membrane. Cells with the first two principle components within 3 standard deviations of the mean, were labeled as SC1, and those with the first two principle components greater than 3 standard deviations from the mean were labeled as SC2. The calculated shear modulus average was 1.1±0.2, 0.90±0.15, and 12 ± 8 MPa for NC, SC1, and SC2, respectively. The calculated young's modulus average was 3.3±0.6, 2.6±0.4, and 32±20 MPa for NC, SC1, and SC2, respectively. o our knowledge, the methods presented here are the first estimation of the erythrocyte mechanical properties and shear stress in vivo during capillary plug flow. In summary, the methods introduced in this study may provide a new avenue of investigation of erythrocyte mechanics in the context of hematologic conditions that adversely affect erythrocyte mechanical properties

From UML specification into FPGA implementation

In the paper a method of using the Unified Modeling Language for specification of digital systems, especially logic controllers, is presented. The proposed method is based mainly on the UML state machine diagrams and uses Hierarchical Concurrent Finite State Machines (HCFSMs) as a temporary model. The paper shows a way to transform the UML diagrams, expressed in XML language, to the form that is acceptable by reconfigurable FPGAs (Field Programmable Gate Arrays). The UML specification is used to generate an effective program in Hardware Description Languages (HDLs), especially Verilog

Adaptación del «Cuestionario de Experiencias de Recuperación» a una muestra española

El objetivo de este estudio consistió en examinar las propiedades psicométricas de la versión española del «Cuestionario de Experiencias de Recuperación» desarrollado por Sonnentag y Fritz. La muestra estaba compuesta por 941 trabajadores del sector de seguridad. Los resultados del análisis factorial exploratorio sugirieron la posibilidad de considerar una estructura de cuatro factores. En el análisis factorial conformatorio se mantuvo dicha estructura, siendo el modelo que mejor ajustaba a los datos el que presentaba cuatro factores con tres ítems cada uno correlacionados entre sí (CFI= 0,97, GFI= 0,96, NNFI= 0,96, RMSEA= 0,05 y AIC= 171,76). Por tanto, el cuestionario mantiene la distinción de cuatro experiencias de recuperación �—distanciamiento psicológico del trabajo, relajación, búsqueda de retos y control sobre el tiempo libre�— aunque con 12 ítems frente a los 16 de la escala original. El análisis de abilidad del cuestionario mostró que la escala posee una adecuada consistencia interna, con valores situados entre 0,75 y 0,88. Se encontraron correlaciones signicativas entre las experiencias de recuperación y diversas variables externas, lo que proporciona apoyo sobre su validez de constructo. Así pues, se considera que esta versión española posee adecuadas propiedades psicométricas y puede contribuir a ampliar el conocimiento sobre esta temática

Analisis de una heuristica integrada para el problema de Steiner en redes

84 p.Esta memoria consiste en reformular el Plan Estratégico del Hospital Base de Curicó y realizar una propuesta de implementación según las nuevas realidades en el área de salud. El trabajo se inicia describiendo los objetivos, tanto general como específicos, que se desean cumplir, además de un cuadro resumen de las actividades que se desarrollaron para la realización de este trabajo. Luego se entrega una definición clara de cada aspecto teórico que fue necesario utilizar en el desarrollo del tema, lo que incluye teoría de Formulación Estratégica, Cuadro de Mando Integral específicamente Mapa Estratégico y Modelo de Excelencia. Además fue necesario realizar una descripción detallada de la Organización, Hospital Base de Curicó, y de su entorno, analizando algunas Normativas (Autoridad Sanitaria, Plan AUGE y Compromisos de Gestión), describiendo aspectos generales del área de salud (Red de Salud, Red Asistencial, etc.), donde se especifica el lugar de aplicación, reseña histórica del Hospital y su estructura organizacional. Se identifican elementos claves estratégicos que actualmente posee el Hospital Base de Curicó, como son Visión, Misión y todos los elementos que forman parte de la descripción de un análisis FODA, además de un diagnóstico de la comunicación organizacional actual basado en los requerimientos del Modelo de Excelencia. Todos estos elementos fueron analizados, otros actualizados para construir una propuesta de un Plan Estratégico Mejorado, el que se utiliza como base para la elaboración de un Mapa Estratégico, la definición de una serie de indicadores, cada uno de ellos descritos, que traducen el Plan Estratégico a las operaciones del día a día. y una propuesta básica de implementación para el plan mejorado, mostrando los ejes donde se debe actuar para su satisfactoria comprensión y comunicación dentro de la Organización

A pivotal year for Bolivian conservation policy

Non peer reviewe

A sacral filum terminale arteriovenous fistula fed by a left T9 artery of Adamkiewicz

This is a case of 62-year-old patient presenting with tingling and numbness extending from the buttocks area towards the lower extremities and gait instability. Contrast Magnetic Resonance Imaging (MRI) and time-resolved imaging of contrast kinetics Magnetic Resonance Imaging (TRICKS MRI) raised suspicion for a possible dural arteriovenous fistula. Diagnostic Digital Subtraction Angiography (DSA) showed a filum terminale arterio venous fistula (AVF) fed by the left T9 from the anterior spinal artery of Adamkiewicz all the way down to the fistulous point at L5-S1. The patient underwent successful laminectomy of L5-S1 and clipping of the filum terminale arteriovenous fistula

Post-malarial anemia in Mozambican children treated with quinine or artesunate: A retrospective observational study

OBJECTIVES:This retrospective analysis performed in Manhiça, Southern Mozambique, aimed to describe the frequency of post-malarial anemia (measured as a decrease of hematocrit ≥10%) and the need for blood transfusions in children with severe malaria treated with intravenous quinine or parenteral artesunate. METHODS:All children =10%) in the first weeks after their episode, sometimes requiring blood transfusions. Because of the high underlying prevalence of anemia in malaria-endemic settings, all children with severe malaria need to be actively followed up, irrespective of the treatment received