5,838 research outputs found
Discriminación económica de género en los egresados de administración y finanzas de Los Mochis, Sinaloa (Gender economic discrimination in administration and finance graduates from Los Mochis, Sinaloa)
Abstract. In this documents is described the gender discrimination of the administration gradutes, 1999-2003 generation from Universidad de Occidente (U de O) in Los Mochis. In general terms the average of incomes has no difference on the gender, mainly due to the high standard deviation of individual incomes. The income differences can not be explained neither by the family dimension such as marital status, nor the number of children, nor the working condition, nor the educational degree for the parents or spouse; nor by the educational dimension, but by the occupational dimension. Gender discrimination is due to the labour market’s segmentation that is, there are jobs destined to a single gender. The exclusive jobs for female administrator are in the category of under employment; whereas those for males have higher average of income.
Resumen. En este trabajo se describe la discriminación económica de género de los egresados de la generación 1999 – 2003 de la Licenciatura en Administración y Finanzas de la Universidad de Occidente (U de O). Se muestra que el promedio de ingresos no es diferente entre ambos géneros debido principalmente a la alta desviación estándar de los ingresos individuales de hombres y mujeres. Las diferencias en los ingresos salariales no pudieron ser explicadas ni por la dimensión familiar, ni por la dimensión educativa, pero sí por la dimensión ocupacional. Se encontró que existe discriminación de género debido a la segmentación del mercado laboral, es
decir, existen puestos destinados a un solo género. Los puestos exclusivos para las licenciadas en administración y finanzas se encuentran en la categoría del subempleo; mientras que los de los hombres sí tienen un promedio de ingresos superior
Role of α-Tocopherol Acetate on Nasal Respiratory Functions: Mucociliary Clearance and Rhinomanometric Evaluations in Primary Atrophic Rhinitis
Primary atrophic rhinitis is a disease of the nose and of paranasalsinuses characterized by a progressive loss of function of nasal and paranasal mucosa caused by a gradual destruction of ciliary mucosalepithelium with atrophy of serous–mucous glands and loss of bonestructures.The aim of this study was to evaluate the therapeutic effects of topic α-tochopherol acetate (vitamin E) in patients with primary atrophicrhinitis based on subjective and objective data.We analyzed 44 patients with dry nose sensation and endoscopic evidence of atrophic nasal mucosa. We analyzed endoscopic mucosascore, anterior rhinomanometry, and nasal mucociliary clearance before and after 6 months of topic treatment with α-tochopherol acetate. For statistical analysis, we used paired samples t test (95% confidence interval [CI], P <.05) for rhinomanometric and muciliary transit time evaluations and analysis of variance 1-way test (95% CI, P <.05) for endoscopic evaluation. All patients showed an improvement in “dry nose” sensation and inperception of nasal airflow. Rhinomanometric examination showed increase of nasal airflow at follow-up (P <.05); nasal mucociliaryclearance showed a reduction in mean transit time (P <.05); and endoscopic evaluation showed significative improvement of hydration of nasalmucosa and significative decreasing nasal crusts and mucusaccumulation (P <.05). Medical treatment for primary atrophic rhinitis is not clearly documented in the literature; in this research, it was demonstrated that α-ochopherol acetate could be a possible treatment for atrophic rhinitis
A Statistical Interpretation of Space and Classical-Quantum duality
By defining a prepotential function for the stationary Schr\"odinger equation
we derive an inversion formula for the space variable as a function of the
wave-function . The resulting equation is a Legendre transform that
relates , the prepotential , and the probability density. We
invert the Schr\"odinger equation to a third-order differential equation for
and observe that the inversion procedure implies a -
duality. This phenomenon is related to a modular symmetry due to the
superposition of the solutions of the Schr\"odinger equation. We propose that
in quantum mechanics the space coordinate can be interpreted as a macroscopic
variable of a statistical system with playing the role of a scaling
parameter. We show that the scaling property of the space coordinate with
respect to is determined by the
``beta-function''. We propose that the quantization of the inversion formula is
a natural way to quantize geometry. The formalism is extended to higher
dimensions and to the Klein-Gordon equation.Comment: 11 pages. Standard Latex. Final version to appear in Physical Review
Letters. Revised and extended version. The formalism is extended to higher
dimensions and to the Klein-Gordon equation. A possible connection with
string theory is considered. The duality is emphasized by a minor
change in the title. The new title is: Duality of and and a
statistical interpretation of space in quantum mechanic
Metals recovery from spent Zn-MnO2 batteries by Hydrometallurgy
A hydrometallurgical process for recycling spent Zn-MnO2 batteries was developed, involving leaching with sulfuric acid, purification by precipitation and metals separation for further recovery. Leaching of zinc oxide was easily attained while for manganese oxide was rather difficult depending on temperature and acid concentration. At 90ºC and with the liquid/solid ratio of 20 L/kg, more than 95% of zinc is recovered in 30 minutes with 0.5M H2SO4. To attain similar recovery for manganese, higher levels of acid concentration and time are needed (e.g 0.7 M and 2 hours). After leaching a purification step is necessary to remove iron co-dissolved through Fe(III) precipitation. Separation of zinc from manganese by solvent extraction with 1M DEHPA follows in the process route. The countercurrent multistage separation diagram developed allows the production of a zinc electrolyte with 120 g/L Zn and 0.005 g/L Mn, and a raffinate with 16 g/L Mn and 0.013 g/L Zn
Recommended from our members
Safety justification frameworks: Integrating rule-based, goal-based and risk-informed approaches
The reliability and safety of the digital I&C systems that implement safety functions are critical issues. In particular, software defects could result in common cause failures that defeat redundancy and defence-in-depth mechanisms. Unfortunately, the differences in current safety justification principles and methods for digital I&C restrict international co-operation and hinder the emergence of widely accepted best practices. These differences also prevent cost sharing and reduction, and unnecessarily increase licensing uncertainties, thus creating a very difficult operating environment for utilities, vendors and regulatory bodies. The European project HARMONICS (Harmonised Assessment of Reliability of MOdern Nuclear I&C Software) is seeking to develop a more harmonised approach to the justification of software-based I&C systems important to safety. This paper outlines the justification framework we intend to develop in HARMONICS. It will integrate three strategies commonly used in safety justifications of I&C system and its software: rule-based-evidence of compliance to accepted standards; goal-based-evidence that the intended behaviour and other claimed properties has been achieved; and risk-informed-evidence that unintended behaviour is unlikely. The paper will present general forms of safety case that can be adapted to a variety of specific topics
Crowd-based cognitive perception of the physical world: Towards the internet of senses
This paper introduces a possible architecture and discusses the research directions for the realization of the Cognitive Perceptual Internet (CPI), which is enabled by the convergence of wired and wireless communications, traditional sensor networks, mobile crowd-sensing, and machine learning techniques. The CPI concept stems from the fact that mobile devices, such as smartphones and wearables, are becoming an outstanding mean for zero-effort world-sensing and digitalization thanks to their pervasive diffusion and the increasing number of embedded sensors. Data collected by such devices provide unprecedented insights into the physical world that can be inferred through cognitive processes, thus originating a digital sixth sense. In this paper, we describe how the Internet can behave like a sensing brain, thus evolving into the Internet of Senses, with network-based cognitive perception and action capabilities built upon mobile crowd-sensing mechanisms. The new concept of hyper-map is envisioned as an efficient geo-referenced repository of knowledge about the physical world. Such knowledge is acquired and augmented through heterogeneous sensors, multi-user cooperation and distributed learning mechanisms. Furthermore, we indicate the possibility to accommodate proactive sensors, in addition to common reactive sensors such as cameras, antennas, thermometers and inertial measurement units, by exploiting massive antenna arrays at millimeter-waves to enhance mobile terminals perception capabilities as well as the range of new applications. Finally, we distillate some insights about the challenges arising in the realization of the CPI, corroborated by preliminary results, and we depict a futuristic scenario where the proposed Internet of Senses becomes true
Analysis of time-profiles with in-beam PET monitoring in charged particle therapy
Background: Treatment verification with PET imaging in charged particle
therapy is conventionally done by comparing measurements of spatial
distributions with Monte Carlo (MC) predictions. However, decay curves can
provide additional independent information about the treatment and the
irradiated tissue. Most studies performed so far focus on long time intervals.
Here we investigate the reliability of MC predictions of space and time (decay
rate) profiles shortly after irradiation, and we show how the decay rates can
give an indication about the elements of which the phantom is made up.
Methods and Materials: Various phantoms were irradiated in clinical and
near-clinical conditions at the Cyclotron Centre of the Bronowice proton
therapy centre. PET data were acquired with a planar 16x16 cm PET system.
MC simulations of particle interactions and photon propagation in the phantoms
were performed using the FLUKA code. The analysis included a comparison between
experimental data and MC simulations of space and time profiles, as well as a
fitting procedure to obtain the various isotope contributions in the phantoms.
Results and conclusions: There was a good agreement between data and MC
predictions in 1-dimensional space and decay rate distributions. The fractions
of C, O and C that were obtained by fitting the decay
rates with multiple simple exponentials generally agreed well with the MC
expectations. We found a small excess of C in data compared to what was
predicted in MC, which was clear especially in the PE phantom.Comment: 9 pages, 5 figures, 1 table. Proceedings of the 20th International
Workshop on Radiation Imaging Detectors (iWorid2018), 24-28 June 2018,
Sundsvall, Swede
Evaluation of ripening Vitis vinifera grown in Northeastern Brazil.
This study aimed to determine physical characteristics and chemical composition of grapes cvs. Syrah and Tempranillo, during maturation
Culturally tailored therapeutic interventions for people affected by dementia: a systematic review and new conceptual model
Most people with dementia live in low and middle-income countries (LMICs) and there is an increased dementia prevalence in some minority ethnic groups in high-income countries. However, most interventions are devised for majority populations in high-income countries. We systematically searched 11 electronic databases for culturally tailored interventions for people with dementia and their family carers in LMICs and minority ethnic groups, without limit on language or date. 23 of 22 221 studies fulfilled inclusion criteria. Interventions adapted peripheral intervention components by, for example, translation and reducing the stigma of psychological therapy by emphasising physical illness and learning. Core therapeutic components were not changed. We found evidence-based, multicomponent interventions adapted for Latinx carers were acceptable, feasible, and effective in the USA and Columbia. Interventions developed for carers in India were effective there but not in other LMICs. Culturally adapted cognitive stimulation therapy was acceptable and effective for people with dementia in sub-Saharan Africa. We propose a new conceptual model from our findings to aid implementation of culturally appropriate treatments for people affected by dementia in LMICs and minority ethnic groups. Evidence-based interventions need cultural adaptation for different settings with therapeutic components retained. If they are acceptable, feasible, and remain effective then full effectiveness trials are unnecessary
- …