Intermediary LEO propagation including higher order zonal harmonics

Two new intermediary orbits of the artificial satellite problem are proposed. The analytical solutions include higher order effects of the Geopotential, and are obtained by means of a torsion transformation applied to the quasi-Keplerian system resulting after the elimination of the parallax simplification, for the first intermediary, and after the elimination of the parallax and perigee simplifications, for the second one. The new intermediaries perform notably well for low earth orbits propagation, are free from special functions, and result advantageous, both in accuracy and efficiency, when compared to the standard Cowell integration of the J2 problem, thus providing appealing alternatives for onboard, short-term, orbit propagation under limited computational resources.Comment: Celestial Mechanics and Dynamical Astronomy: Accepted September 25, 201

General Purpose Textual Sentiment Analysis and Emotion Detection Tools

Textual sentiment analysis and emotion detection consists in retrieving the sentiment or emotion carried by a text or document. This task can be useful in many domains: opinion mining, prediction, feedbacks, etc. However, building a general purpose tool for doing sentiment analysis and emotion detection raises a number of issues, theoretical issues like the dependence to the domain or to the language but also pratical issues like the emotion representation for interoperability. In this paper we present our sentiment/emotion analysis tools, the way we propose to circumvent the di culties and the applications they are used for.Comment: Workshop on Emotion and Computing (2013

HEOSAT: A mean elements orbit propagator program for Highly Elliptical Orbits

The algorithms used in the construction of a semi-analytical propagator for the long-term propagation of Highly Elliptical Orbits (HEO) are described. The software propagates mean elements and include the main gravitational and non-gravitational effects that may affect common HEO orbits, as, for instance, geostationary transfer orbits or Molniya orbits. Comparisons with numerical integration show that it provides good results even in extreme orbital configurations, as the case of SymbolX.Comment: 18 pages, 5 figure

Medication Assisted Treatment for Opioid Use Disorder in the Primary Care Setting in Philadelphia: A Retrospective Review

Introduction: The opioid crisis continues to be a growing public health concern across the United States. Americans struggling with Opioid Use Disorder (OUD) can seek different resources to help curtail their addiction. These include abstinence -based programs such as Narcotics Anonymous and Specialty treatment facilities including methadone and suboxone clinics. It has been shown that increased availability of drugs to treat opioid use addiction, such as methadone and buprenorphine, is linked to a lower likelihood of relapse and fatal overdoses. Therefore, medication assisted treatment (MAT) is a valuable asset because it combines behavioral therapy and medications to treat opioid use disorder. Despite the potential benefit of primary care MATs, there are factors leading to low access and utilization of these programs. They include limited number of trained prescribers, policy barriers such as insurance coverage, and both and provider stigma associated with MAT. Demographics from the MAT program of Project HOME Health Services of Philadelphia were reviewed for this project. Objective: To conduct a retrospective review of MAT program participant demographics at Project HOME Health Services in North Philadelphia. The goal is to identify the key demographics of patients enrolled in the program from July 2017- July 2018. Methods: A review of an Electronic Medical Record database from a population of 108 patients enrolled in the MAT program at Project HOME Health Services from July 2017-2018. The planned analysis is demographic descriptive statistics. Results: The age range of patients was 27-71. Of the 108 patients, 39 were considered active participants in the program (21 male, 18 female). Twenty-five percent of the patient population reported their homeless status as shelter, street, transitional, supportive housing, or formerly homeless. Sixty-nine patients received a hepatitis C virus antibody test, with 26 reporting results suggesting of a possible Hepatitis C, 8 positive, and 20 with negative testing. In the total population, there were 39% reported hypertension, 54% reported depression, and 94% reported current tobacco use. Conclusion: The reported findings describe the demographics of the MAT participants of Project Home of Philadelphia. This data will be utilized in conjunction with other research that assesses adherence to MAT programs and quality of life. Future areas for research involve statistical comparisons to determine factors leading to patient retention in the program. Another project would be to review the patients’ urine toxicology screens for additional information, including the number of months in the program until only the prescribed drugs are in the urine and how many drug screens were positive for fentanyl. Finally, further research may determine specific additional primary care needs of the participants

Acting as a molecular tailor : dye structural modifications for improved sensitivity towards lysophosphatidic acids sensing

Lysophosphatidic acids (LPA) are key biomarkers for several physiological processes, the monitoring of which can provide insights into the host’s health. Common lab-based techniques for their detection are cumbersome, expensive and necessitate specialized personnel to operate. LPA-sensitive fluorescent probes have been described, albeit for non-aqueous conditions, which impedes their use in biological matrices. In this paper, we explore in detail the influence of structure on the extent of aggregation-induced fluorescence quenching using specially synthesized styrylpyridinium dyes bearing structural adaptations to bestow them enhanced affinity towards LPA in aqueous media. Spectroscopic investigations supported by time-resolved fluorimetry revealed the contribution of excimer formation to the fluorescence quenching mechanism displayed by the fluorescent probes. Experimental observations of the influence of structure on detection sensitivity were supported by DFT calculations

Robust sliding mode‐based extremum‐seeking controller for reaction systems via uncertainty estimation approach

"This paper deals with the design of a robust sliding mode‐based extremum‐seeking controller aimed at the online optimization of a class of uncertain reaction systems. The design methodology is based on an input–output linearizing method with variable‐structure feedback, such that the closed‐loop system converges to a neighborhood of the optimal set point with sliding mode motion. In contrast with previous extremum‐seeking control algorithms, the control scheme includes a dynamic modelling‐error estimator to compensate for unknown terms related with model uncertainties and unmeasured disturbances. The proposed online optimization scheme does not make use of a dither signal or a gradient‐based optimization algorithm. Practical stabilizability for the closed‐loop system around to the unknown optimal set point is analyzed. Numerical experiments for two nonlinear processes illustrate the effectiveness of the proposed robust control scheme.

Análisis de la concordancia diagnóstica y tiempo de estancia hospitalaria en pacientes atendidos en el servicio de Emergencia del Hospital de los Valles durante el año 2014

The hospital stay is one of the highest costs that the patient or the health system has to assume while being taken care off, this is the reason why its important to make an analysis of the factors contributing to it. Objectives: Determine the effect that has the diagnostic concordance in the time of hospitality stay. Methodology: It was used a database with the patients’ information who entered to the HDLV Emergency service in the year of 2014...La estancia hospitalaria es uno de los costos más elevados que tiene que asumir ya sea el sistema de salud o el paciente, razón por la es necesario analizar sus factores determinantes. Objetivos: Determinar el efecto que tiene la concordancia diagnóstica en el tiempo de estancia hospitalaria. Metodología: Se utilizó una base de datos con información de 1610 pacientes que ingresaron al servicio de Emergencia del HDLV durante el año 2014..

On-line estimation of VFA concentration in anaerobic digestion via methane outflow rate measurements

"This paper deals with the design of a robust nonlinear observer as a software sensor to achieve the on-line estimation of the concentration of Volatile Fatty Acids (VFA) in a class of continuous anaerobic digesters (AD). Taking into account the limited availability of on-line sensors for AD process, in this contribution is assumed that only the methane outflow rate is available for on-line measurement. The estimation method is based on a modified version for a two-dimensional mathematical model of AD process. From the differential algebraic observability approach it is shown that the VFA concentration is detectable from the methane outflow rate measurements. The observer convergence is analyzed by using Lyapunov stability techniques. Numerical simulations illustrate the effectiveness of the proposed estimation method for a four-dimensional AD model with uncertainties associated with unmodeled dynamics and disturbances in the inflow composition.

Estudio preliminar para la enseñanza del béisbol 5 (Revisión)

The update of boys and girls in sports is one of the tasks of Physical Education, in which the games occupy a prominent place, recognized for their high educational value and in the development of children and youth, hence The objective of this article is based on the Preliminary study for the teaching of baseball 5, in the province of Sancti Spíritus. To this end, a characterization of the problematic situation in the spirit school environment was carried out and it was assessed , various trends on the problem The research was carried out with a significant sample of teachers and methodologists from the municipalities of the province of Sancti Spíritus that includes all levels of education, up to the upper average, without exception of schools with educational needs This new inclusive sport is a way to promote sports initiation from the Physical Education class and the sports program for everyone.La incorporación de niños y niñas a la práctica de deportiva es una de las tareas de la Educación física, en la que los juegos ocupan un lugar preponderante, reconocido por su alto valor educativo y en el desarrollo de la niñez y la juventud, de ahí que el objetivo del presente artículo, se base en el Estudio preliminar para la enseñanza del béisbol 5, en la Educación Física en la provincia de Sancti Spíritus. Para ello, se realizó una caracterización de la situación problemática en el ámbito escolar espirituano y se valoró, diversas tendencias sobre la problemática. La investigación se desarrolló con una muestra significativa de profesores y los metodólogos de los municipios de la provincia de Sancti Spíritus que incluye todos los niveles de enseñanza, hasta la media superior, sin exceptuar las escuelas con necesidades educativas especiales. Este nuevo deporte inclusivo constituye una vía para favorecer la iniciación deportiva desde la clase de Educación Física y el programa de Deporte para Todos

Validation of an Impulse Measurement Technique with High Temporal and Spatial Resolutions

AbstractWe present a new experimental technique to measure the force-time history of high-velocity impacts and high pressure blast waves. The technique is based on the classic Hopkinson-type strain bar, coupled with an interferometric velocimeter instead of strain gauges. The major benefits of this setup are its accuracy, temporal resolution, and its imperviousness to electromagnetic interferences. We explain the keys concepts behind the technique and describe the experimental setup. We present experimental and numerical data as proof-of-concept and discuss preliminary studies on the effect of plastic deformation of the bar and its consequences on the interpretation of the measured impulse-history