Quarkophobic W' for LHC searches

We consider a simplified model where a W' boson is added to the standard model with negligible couplings to quarks, but generic couplings to leptons and electroweak bosons. We study the implications of such a model for LHC searches. Consequently, we propose an LHC search through the vector boson fusion topology which would have sensitivity for such a new particle with the current proton-proton collisions's energy and available luminosity.Comment: FPCP 2022 proceeding

Motivación y ejercicio físico deportivo: una añeja relación.

El presente trabajo tiene como objetivo demostrar la importancia de la motivación para la práctica del ejercicio físico y el deporte, en su etapa de inicio, mantenimiento y/o rendimiento. Se realiza una revisión teórica sobre el impacto que tiene la motivación como proceso de activación de la conducta relacionada a la activación física en las personas. Las diversas teorías de la motivación se examinan, no con la finalidad de que sea un simple repaso de ellas, sino para analizar su relación con el ejercicio físico deportivo, ya sea a nivel amateur o profesional. Conjuntamente se analiza la importancia del clima motivacional para optimar, mantener a las personas en la práctica del ejercicio físico o deport

Aplicación del modelo trans-teórico en la planificación docente de educación física de Nuevo León

Resumen: El propósito del siguiente estudio es identificar las etapas de cambio de la planificación en educación física en docentes del nivel primaria, del sistema federal del estado de Nuevo León. Participaron 98 docentes quienes aceptaron responder una encuesta. Nuestros resultados indican que el 62% de nuestra muestra se encuentra en una etapa de Precontemplación, el 5% en la etapa de Contemplación, un 4% de la muestra está en una etapa de Preparación, 10% de la muestra se encuentra en la etapa de Acción, y el 19 % de la muestra está en una etapa de Mantenimiento. Este es un estudio piloto descriptivo de tipo transversal, donde la muestra fue por conveniencia y se utilizó una encuesta basada en las etapas de cambio. El modelo trans-teórico se podría utilizar para un estudio a nivel estatal y establecer estrategias para la mejora de la práctica de la planificación en Educación Física. Abstract: The purpose of this study is to identify the stages of change of planning in teaching physical education at the primary level, the federal system of the state of Nuevo Leon. They participated 98 teachers who agreed to answer a survey. Our results indicate the 62% of our sample is in a stage of Precontemplation, 5% in the contemplation stage, 4% of the sample is at a stage of preparation, 10% of the sample is in the action stage, and 19% of the sample is at a stage of maintenance. This is a descriptive cross-sectional pilot study where the sample was for convenience and a survey based on the stages of change was used. The trans-theoretical model could be used for a statewide study and develop strategies for improving the planning practice in Physical Education

Young Mexican physical self – concept gender comparisons

The purpose of the present study was to compare the profiles of physical self-concept between men and women high school Mexican students. A total sample of 709 participants, 324 women and 385 men, aged 13-19 years participated in this study. A quantitative approach with a descriptive and transversal survey design was used. All the participants completed the Physical Self-Description Questionnaire. Results of the one-way multivariate analysis of variance, followed by the one-way univariate analysis of variance, showed that in comparison among women, men obtained higher scores on the health, coordination, activity, sports competence, strength, flexibility, endurance, global physical self-concept and global self-esteem subscales. However, in the body fat and appearance subscales statistically significant differences were not found because of the differences between men and women in their perception of their physical self-concept, these findings suggest that in order to design any intervention for improving the perceived physical self-concept of the students, the variable gender should be taken into accoun

Pre-competitive anxiety and self-confidence in pan american gymnasts

This study aimed to examine the intensity and direction of pre-competitive anxiety indicators (both somatic and cognitive), as well as self-confidence, in gymnasts participating in the 2011 Pan American Games. Sixty male and female artistic gymnasts participated, with ages ranging from 15 to 30 years (M = 21.04 years, SD = 4.016). The Revised Competitive State Anxiety Inventory-2 (CSAI-2R, Andrade, Lois, & Arce, 2007; Cox, Martens, & Rusell, 2003) and the direction scale by Jones and Swain (1992) were both administered. The results revealed that the intensity and direction of cognitive anxiety were positively correlated with the intensity and direction of somatic anxiety (r = .55 and r = .53, respectively), while self-confidence was negatively correlated with the intensity of cognitive anxiety (r = - 305) and also predicted it (β = - .192). Women reported significantly higher perceived somatic anxiety levels (2.79) than men (2.48). In conclusion, high levels of self-confidence decreased the perception of cognitive anxiety as being debilitative to gymnasts competing at the Pan American level

Autoconcepto físico, género y cuidado de la salud en universitarios mexicanos

Esta investigación, mediante modelos de ecuaciones estructurales, analiza los efectos directos e indirectos del género y el cuidado de la salud sobre el autoconcepto físico. La muestra total fue de 938 universitarios mexicanos, con una edad media de 20.46 años (DE=1.83). Los resultados indican que el género y los hábitos saludables son las variables con mayor poder explicativo sobre la competencia motora y el atractivo físico. También destaca la capacidad mediadora del estrés entre los hábitos no saludables y el autoconcepto físico. Futuras investigaciones deberían replicar estos hallazgos en muestras más amplias.This research, through structural equation models, analyze the direct and indirect effects of gender and health care on physical self-concept. The total sample was of 938 Mexican university students, with an average age of 20.46 years (SD = 1.83). The proposed model obtains a satisfactory fit. Being significant the majority of the hypothesized relationships. Gender and healthy habits are the variables with greater explanatory power over motor competence and physical attractiveness. It also emphasizes the mediator capacity of stress between unhealthy habits and physical self-concept. Future research should replicate these findings in larger samples.Nesta pesquisa, mediante modelos de ecuações estricturais, analisa os efeitos direitos e indireitos do gênero e cuidado da saúde sobre o autoconceito físico. Amuestra total foi de 938 universitários mexicanos com uma edade promedio de 20.46 anos (DE=1.83). O modelo proposo consigue um ajuste satisfatório. São significativas a mayoría das relações hipóteseadas. O gênero e hábitos saudáveis são as variáveis com maior poder explicativo sobre a competência motora e atrativo físico. Também sobressai a capacidadae mediadora do stress dos hábitos não saudáveis e do autoconceito físico. Outras investigações deberíam replicar estos achados em mostras maiores

Rumen fermentation and diet degradability in sheep fed sugarcane (Saccharum officinarum) silage supplemented with Tithonia diversifolia or alfalfa (Medicago sativa) and rice polishing

The objective of this study was to evaluate ruminal fermentation (i.e. pH, ammonia, and volatile fatty acid concentrations) and in situ degradability of diets in sheep fed sugarcane silage (SCS) supplemented with Tithonia diversifolia (Td) or alfalfa (Medicago sativa) hay (A), with or without rice (Oriza sativa) polishing (RP) as an energy source. Four Blackbelly sheep (35 kg average body weight) with rumen cannula were used. The experimental diets were (g/kg of dry matter): Diet 1) SCS (686) + Td (294), Diet 2) SCS (460) + Td (226) + RP (294), Diet 3) SCS (637) + A (343), and Diet 4) SCS (441) + A (245) + RP (294). The remainder (20 g/kg of dry matter) was composed by minerals supplement and salt. Samples of diets were incubated into rumen for 3, 6, 9, 12, 24, 30, 36, 48, and 72 h to determine in situ degradability. Data were analysed with a linear mixed model. The lamb, period and lamb nested in period*diet were considered as a random variable. The inclusion of RP improved the degradability of diets and ammonia production in the rumen. The acetic, propionic, and butyric acid concentrations (mmol/100 mL) in rumen increased (P<0.03) when diets with alfalfa and RP were provided. The degradability of diets based on sugarcane silage supplemented with either alfalfa or Tithonia diversifolia was improved (P<0.05) with the rice polishing inclusion, with no difference (P>0.05) between these forages. In conclusion, energy supplementation, not necessarily from starch, is important to improve rumen fermentation and degradability of diets based on sugarcane silage

Estimador de Nivel de Umbral Adaptable en Tiempo Real para Sistemas de Reducción de Ruido con Transformada Wavelet Analógica

En este trabajo se propone un sistema de umbralización adaptativa para reducción de ruido con el uso de la transformada wavelet analógica. El sistema aplica la transformada wavelet a la señal de entrada y utiliza las variaciones temporales del nivel de ruido en las componentes resultantes para modificar un nivel de umbral, el cual se emplea para la reducción de ruido mediante la técnica de umbralización dura (hard-thresholding). El sistema se simuló en SPICE usando macromodelado y fue validado con señales transitorias a distintas frecuencias con diferentes niveles de ruido blanco. Se obtuvo una reducción en el error de reconstrucción satisfactoria mostrando adaptabilidad a variaciones en el nivel de ruido