Uses of Polygraphy as proof of reliability and challenges for its implementation in Companies

El siguiente ensayo se realizó con el fin de describir que relevancia puede generar el resultado de una prueba de polígrafo en el momento de tomar decisiones dentro de una organización, sin influir en el desempeño óptimo de la misma. A partir de lo anterior, se plantea diversas estrategias con el fin de generar confiabilidad en lo referente al ingreso y/o permanencia de un empleado dentro de una organización, definir las diferentes normas que establecen el correcto uso de estas pruebas y se establece las diferentes fases por las cuales pasa una prueba de poligrafía, con el fin de analizar o evitar posibles comportamientos a futuro basados en situaciones individuales o colectivas ya vividas por los empleados y/o directivos, además permite evaluar conductas ilícitas que se estén presentando dentro de la organización, provocados por los fenómenos de infiltración y penetración que hoy día afectan todas los sectores.Tabla de contenido Página Resumen………………………………………………………………………………... 1 Abstract………………………………………………………………………………….. 2 Introducción……………………………………………………………………………... 3 Desarrollo del tema…………………………………………………………………….. 5 Definición de una prueba poligráfica y sus efectos en la organización………….. 5 Marco legal referente al uso de pruebas de poligrafía…………………………….. 6 Fases del examen de poligrafía…………………………………………………….... 9 Causas para determinar un resultado en una prueba poligráfica………………... 14 Conclusiones…………………………………………………………………………… 18 Referencias.……………………………………………………………………………. 20The following essay was carried out in order to describe what relevance the result of a polygraph test can generate when making decisions within an organization, without influencing the optimal performance of the same. Based on the foregoing, several strategies are proposed in order to generate reliability regarding the entry and/or permanence of a employee within an organization, define the different rules that establish the correct use of these tests and establish the different phases through which a polygraph test passes, in order to analyze or avoid possible future behaviors based on individual or collective situations already experienced by employees and / o managers, also allows to evaluate illicit behaviors that are occurring within the organization, caused by infiltration and penetration phenomena that today affect all sectors

Hybrid disturbance rejection control of dynamic bipedal robots

This paper presents a disturbance rejection control strategy for hybrid dynamic systems exposed to model uncertainties and external disturbances. The focus of this work is the gait control of dynamic bipedal robots. The proposed control strategy integrates continuous and discrete control actions. The continuous control action uses a novel model-based active disturbance rejection control (ADRC) approach to track gait trajectory references. The discrete control action resets the gait trajectory references after the impact produced by the robot’s support-leg exchange to maintain a zero tracking error. A Poincaré return map is used to search asymptotic stable periodic orbits in an extended hybrid zero dynamics (EHZD). The EHZD reflects a lower-dimensional representation of the full hybrid dynamics with uncertainties and disturbances. A physical bipedal robot testbed, referred to as Saurian, is fabricated for validation purposes. Numerical simulation and physical experiments show the robustness of the proposed control strategy against external disturbances and model uncertainties that affect both the swing motion phase and the support-leg exchange

Optimization of electronic nose drift correction applied to tomato volatile profiling

This is a pre-print of an article published in Analytical and Bioanalytical Chemistry. The final authenticated version is available online at: https://doi.org/10.1007/s00216-021-03340-5E-noses can be routinely used to evaluate the volatile profile of tomato samples once the sensor drift and standardization issues are adequately solved. Short-term drift can be corrected using a strategy based on a multiplicative drift correction procedure coupled with a PLS adaptation of the component correction. It must be performed specifically for each sequence, using all sequence signals data. With this procedure, a drastic reduction of sensor signal %RSD can be obtained, ranging between 91.5 and 99.7% for long sequences and between 75.7 and 98.8% for short sequences. On the other hand, long-term drift can be fixed up using a synthetic reference standard mix (with a representation of main aroma volatiles of the species) to be included in each sequence that would enable sequence standardization. With this integral strategy, a high number of samples can be analyzed in different sequences, with a 94.4% success in the aggrupation of the same materials in PLS-DA two-dimensional graphical representations. Using this graphical interface, e-noses can be used to developed expandable maps of volatile profile similitudes, which will be useful to select the materials that most resemble breeding objectives or to analyze which preharvest and postharvest procedures have a lower impact on the volatile profile, avoiding the costs and sample limitations of gas chromatography

Caracterización de intoxicaciones con productos de higiene de uso doméstico en Bogotá D.C. reportadas al SIVIGILA entre los años 2008 y 2012

El Sistema Nacional de Vigilancia en Salud Pública –SIVIGILA, es un organismo creado por el Instituto Nacional de Salud para realizar la provisión en forma sistemática y oportuna de información sobre los eventos que afectan o pueden afectar la salud de la población Colombiana. Las intoxicaciones con productos de higiene de uso doméstico hacen parte de las notificaciones que el SIVIGILA recibe y clasifica; sin embargo esta información requiere ser caracterizada para definir acciones encaminadas a la prevención de las mismas. Para tal fin el SIVIGILA Distrital proporcionó la información proveniente de las unidades primarias generadoras de datos –UPGD-, y se realizó el estudio descriptivo teniendo en cuenta criterios de inclusión y de exclusión con el objetivo de minimizar posibles errores en la caracterización; así mismo la información fue integrada con principios estadísticos importantes como la probabilidad conjunta.PregradoQuímico(a) Farmacéutic

CARACTERIZACIÓN DE LA POBLACIÓN CON SAHS EN CÚCUTA

RESUMENLa presente investigación tiene como objetivo realizar una Caracterización de la población con SAHS en el municipio de Cúcuta. Para el logro de este objetivo se estableció la asociación existente entre las variables: índice de masa corporal (IMC) >25, somnolencia diurna, perímetro cervical, edad y género) y nivel de gravedad del SAHS en pacientes diagnosticados en la clínica neumológica y del sueño Cúcuta-Norte de Santander para su posterior caracterización. Se realizó un estudio retrospectivo de corte transversal que consistió en  revisar la base de datos de los pacientes diagnosticados con SAHS extrayendo las variables género, edad,  escala de sueño Epworth, IMC, perímetro cervical y a su vez estableciendo la asociación con el nivel gravedad según el índice de apnea hipopnea. Se analizaron 273 pacientes de los cuales fueron excluidos 56 por no cumplir con los criterios de inclusión, 217 pacientes de los cuales 57.7% fueron mujeres y 49.3% fueron hombres, 62.7% se encontraban en etapa adultez, 41% presento somnolencia excesiva de severidad moderada, 54% presentaba algún grado de obesidad, 65% tenía perímetro cervical normal, hallándose asociación entre la edad, índice de masa corporal (IMC), perímetro cervical con la gravedad clínica del SAHS. Las variables como edad, índice de masa corporal, perímetro cervical y la escala Epworth se asemejan a la literatura mundial, determinando que no existe asociación entre el grado de somnolencia diurna y la severidad  del SAHS según el índice de apnea hipopnea aplicado en el estudio.Palabras claves: apnea hipopnea del sueño, índice de masa corporal, hipopne

Present status and perspective on the future use of aflatoxin biocontrol products

Aflatoxin contamination of important food and feed crops occurs frequently in warm tropical and subtropical regions. The contamination is caused mainly by Aspergillus flavus and A. parasiticus. Aflatoxin contamination negatively affects health and trade sectors and causes economic losses to agricultural industries. Many pre- and post-harvest technologies can limit aflatoxin contamination but may not always reduce aflatoxin concentrations below tolerance thresholds. However, the use of atoxigenic (non-toxin producing) isolates of A. flavus to competitively displace aflatoxin producers is a practical strategy that effectively limits aflatoxin contamination in crops from field to plate. Biocontrol products formulated with atoxigenic isolates as active ingredients have been registered for use in the US, several African nations, and one such product is in final stages of registration in Italy. Many other nations are seeking to develop biocontrol products to protect their crops. In this review article we present an overview of the biocontrol technology, explain the basis to select atoxigenic isolates as active ingredients, describe how formulations are developed and tested, and describe how a biocontrol product is used commercially. Future perspectives on formulations of aflatoxin biocontrol products, along with other important topics related to the aflatoxin biocontrol technology are also discussed.Fil: Moral, Juan. Universidad de Córdoba; EspañaFil: Garcia-Lopez, Maria Teresa. Universidad de Córdoba; EspañaFil: Camiletti, Boris Xavier. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto Multidisciplinario de Biología Vegetal. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto Multidisciplinario de Biología Vegetal; Argentina. Universidad Nacional de Córdoba. Facultad de Ciencias Agropecuarias. Departamento de Recursos Naturales. Cátedra de Microbiología Agrícola; ArgentinaFil: Jaime, Ramon. University of California at Davis; Estados UnidosFil: Michailides, Themis J.. University of California at Davis; Estados UnidosFil: Bandyopadhyay, Ranajit. International Institute of Tropical Agriculture; NigeriaFil: Ortega-Beltran, Alejandro. International Institute of Tropical Agriculture; Nigeri

Initiation of ovarian stimulation independent of the menstrual cycle (random-start) in an oocyte donation programme a large, single-center experience

Research Question Do live birth rates differ between recipients matched with donors using conventional ovarian stimulation versus those using random-start protocols? Design Retrospective analysis of 891 ovarian stimulations in egg donors (January-December 2018) and clinical outcomes in matched recipients (n=935). Donors commenced ovarian stimulation on day 1/3 of the menstrual cycle (n=223) or in the mid/late-follicular (n=388) or luteal phase (n=280) under a conventional antagonist protocol. Live birth rate of matched recipients was the main outcome. Results Duration of stimulation and total gonadotropins dose were comparable between conventional versus random-start groups. The number of collected eggs were also similar: 17.6±8.8 vs 17.2±8.5, p=0.6, respectively. Sub-group analysis showed an increased stimulation length (10.2±1.8 vs 9.8±1.7 vs 10.4±1.7, p<0.001) and gonadotropin consumption (2041.5±645.3 vs 2003.2±647.3 vs 2158.2±685.7 IU, p=0.01) in the luteal phase group vs the mid/late follicular and conventional groups; respectively. In matched recipients receiving fresh oocytes and undergoing fresh embryo transfer, the biochemical pregnancy (63.8% and 63.3%; p=0.9), clinical pregnancy (54.6% and 56.1%; p=0.8) and live birth rates (47.7% and 46.6%; p=0.7) per embryo-transfer were similar between conventional versus random groups. Similar results were obtained in recipients receiving vitrified eggs. Euploidy rate was also comparable. Conclusions There were no notable variations in clinical outcomes using oocytes obtained from random-start protocols and those proceeding from conventional ovarian stimulation in oocyte donation treatments. However, luteal-phase stimulation seems to require longer stimulation and higher FSH consumption. Our results indicate that random-start stimulation strategy does not impair the potential of the oocyte yield or clinical outcomes in oocyte donation cycles

Community standards for open cell migration data

Cell migration research has become a high-content field. However, the quantitative information encapsulated in these complex and high-dimensional datasets is not fully exploited owing to the diversity of experimental protocols and non-standardized output formats. In addition, typically the datasets are not open for reuse. Making the data open and Findable, Accessible, Interoperable, and Reusable (FAIR) will enable meta-analysis, data integration, and data mining. Standardized data formats and controlled vocabularies are essential for building a suitable infrastructure for that purpose but are not available in the cell migration domain. We here present standardization efforts by the Cell Migration Standardisation Organisation (CMSO), an open community-driven organization to facilitate the development of standards for cell migration data. This work will foster the development of improved algorithms and tools and enable secondary analysis of public datasets, ultimately unlocking new knowledge of the complex biological process of cell migration

Characterization of digestive disorders of patients with chronic Chagas disease in Cochabamba, Bolivia

Background: Chagas disease (CD) is endemic in Latin America and particularly common in Bolivia, but there is little information on the characteristics of chronic digestive involvement. Objectives: To determine the prevalence and characterize digestive manifestations in chronic CD patients in Cochabamba, Bolivia. Methods: Eighty-five T. cruzi-seropositive individuals with or without digestive symptoms (G1 group), and fifteen T. cruzi-seronegative patients with similar digestive symptoms to those seen in CD (G2 group) were included in the study. All patients underwent a detailed history including past medical history, epidemiological information, hygiene and dietary habits, a complete physical examination, two serological tests for T. cruzi, video endoscopy, barium swallow, and barium enema. Findings: We observed digestive manifestations in T. cruzi seropositive and seronegative patients. Colonic manifestations were detected in both groups, highlighting the relevance of other confounder factors in the region. Constipation was present in 52.9% of G1 patients, 62.4% presented two or more upper digestive tract symptoms, and 5.9% of them presented esophageal manifestations. Helicobacter pylori infection was detected in 58.8% of G1 patients, and all patients presented gastritis on endoscopy. Conclusions: Prevalence of digestive involvement in CD patients is higher than expected. However, digestive symptoms are not always caused by T. cruzi infection and require differential diagnoses

Present status and perspective on the future use of aflatoxin biocontrol products

Open Access Journal; Published online: 01 Apr 2020Aflatoxin contamination of important food and feed crops occurs frequently in warm tropical and subtropical regions. The contamination is caused mainly by Aspergillus flavus and A. parasiticus. Aflatoxin contamination negatively affects health and trade sectors and causes economic losses to agricultural industries. Many pre- and post-harvest technologies can limit aflatoxin contamination but may not always reduce aflatoxin concentrations below tolerance thresholds. However, the use of atoxigenic (non-toxin producing) isolates of A. flavus to competitively displace aflatoxin producers is a practical strategy that effectively limits aflatoxin contamination in crops from field to plate. Biocontrol products formulated with atoxigenic isolates as active ingredients have been registered for use in the US, several African nations, and one such product is in final stages of registration in Italy. Many other nations are seeking to develop biocontrol products to protect their crops. In this review article we present an overview of the biocontrol technology, explain the basis to select atoxigenic isolates as active ingredients, describe how formulations are developed and tested, and describe how a biocontrol product is used commercially. Future perspectives on formulations of aflatoxin biocontrol products, along with other important topics related to the aflatoxin biocontrol technology are also discussed