Lidando com terremotos e COVID-19: uma perspectiva da gestão do relacionamento com o cliente

This study describes Customer Relationship Management (CRM) resiliency activities carried out in Puerto Rico by small and medium-sized enterprises (SMEs) during a series of earthquakes and the COVID-19 pandemic. The objective of the study is to provide strategies to help businesses move forward and cope with negative effects of unexpected disruptive events. The data gathering process comprised 121 firms surveyed and 7 in-depth interviews with business owners and managers operating in Puerto Rico. Results reveal that reinforcing customer communications, followed by distribution and logistics re-engineering were some of the CRM resilience strategies frequently used by SMEs. By backing up their Critical Infrastructure (CI), businesses avoid telecommunications interruptions and stay in communication with stakeholders mainly via satellite and mobile Wi-Fi connections.Este estudio describe las actividades de resiliencia de la Gestión de la Relación con el Cliente o CRM, por sus siglas en inglés, llevadas a cabo en Puerto Rico por las pequeñas y medianas empresas (Pymes) durante una serie de terremotos y la pandemia del COVID-19. El objetivo del estudio es brindar estrategias para ayudar a las empresas a que avancen y manejen efectos negativos de eventos disruptivos inesperados. El proceso de recopilación de datos consistió en 121 encuestados y 7 entrevistas con dueños y gerentes de negocios que operan en Puerto Rico. El refuerzo de las comunicaciones con los clientes, seguido de la reingeniería de la distribución y logística, fueron algunas estrategias de resiliencia de CRM utilizadas con frecuencia. Con un respaldo en Infraestructura Crítica (IC) las empresas evitan interrupciones de las telecomunicaciones manteniéndose en comunicación con los constituyentes principalmente a través de las conexiones vía satélite y Wi-Fi.Este estudo descreve as atividades de resiliência de Gestão do Relacionamento com o Cliente ou CRM, realizadas em Porto Rico por Pequenas e Médias Empresas (PMEs) durante uma série de terremotos e a pandemia COVID. O objetivo do estudo é fornecer estratégias para ajudar as empresas a avançar e gerenciar os efeitos negativos de eventos perturbadores inesperados. O processo de coleta de dados consistiu em 121 pessoas pesquisadas e 7 entrevistas com proprietários de empresas e gerentes que operam em Porto Rico. O fortalecimento da comunicação com o cliente, seguido pela reengenharia de distribuição e logística, foram algumas estratégias de resiliência de CRM usadas com frequência. Com suporte em Infraestrutura Crítica (IC), as empresas evitam interrupções nas telecomunicações, mantendo a comunicação com os constituintes principalmente por meio de conexões via satélite e wifi

Single-pixel imaging with Fourier filtering: Application to vision through scattering media

This is the author accepted manuscript. The final version is available from the publisher via the DOI in this recordWe present a novel approach for imaging through scattering media that combines the principles of Fourier spatial filtering and single-pixel imaging. We compare the performance of our single-pixel imaging setup with that of a conventional system. First, we show that a single-pixel camera does not reduce the frequency content of the object, when a small pinhole is used as a low-pass filter at the detection side. Second, we show that the introduction of Fourier gating improves the contrast of imaging through scattering media in both optical systems. We conclude that single-pixel imaging fits better than conventional imaging on imaging through scattering media by the Fourier gating

Humedales olvidados

El río Jarama ha caído en el olvido. Pasean senderistas alrededor de las lagunas y ciclistas recorren los campos obviando el Jarama. Río que en su día fue una zona de recreo y baño para la sociedad madrileña. Tras el análisis del entorno y conociendo el ambiente, la conclusión a la que se llega es que es necesaria una intervención sobre las lagunas, creando un punto de encuentro donde el río se vuelva a acercar a las personas. Asimismo, se busca rehabilitar la fauna local y acondicionar el estado del agua de las lagunas. El proyecto precisa de distintas intervenciones: - Adecuación de las infraestructuras para comunicar el equipamiento deportivo con la ciudad y las inmediaciones. - Ubicación del canal de remo que provea una actividad lúdica y deportiva que carece de instalaciones adecuadas en la Comunidad de Madrid. - Renaturalización y depuración mediante humedales, con el fin de mejorar el estado del agua y revitalizar la fauna y la flora. - Accesos peatonales y paseos a lo largo del Jarama y las instalaciones. - Creación del canal de remo y servicios que se ofrecen en el mismo.Máster Universitario en Arquitectura (M154

Signal-to-noise ratio of single-pixel cameras based on photodiodes

Single-pixel cameras have been successfully used in different imaging applications in the last years. One of the key elements affecting the quality of these cameras is the photodetector. Here, we develop a numerical model of a single-pixel camera, which takes into account not only the characteristics of the incident light but also the physical properties of the detector. In particular, our model considers the photocurrent, the dark current, the photocurrent shot noise, the dark-current shot noise, and the Johnson–Nyquist (thermal) noise of the photodiode used as a light detector. The model establishes a clear relationship between the electric signal and the quality of the final image. This allows us to perform a systematic study of the quality of the image obtained with single-pixel cameras in different contexts. In particular, we study the signal-to-noise ratio as a function of the optical power of the incident light, the wavelength, and the photodiode temperature. The results of the model are compared with those obtained experimentally with a single-pixel camera

Signal-to-noise ratio of single-pixel cameras based on photodiodes

This is the author accepted manuscript. The final version is available from the publisher via the DOI in this recordSingle-pixel cameras have been successfully used in different imaging applications in the last years. One of the key elements affecting the quality of these cameras is the photodetector. Here, we develop a numerical model of a single-pixel camera, which takes into account not only the characteristics of the incident light but also the physical properties of the detector. In particular, our model considers the photocurrent, the dark current, the photocurrent shot noise, the dark-current shot noise, and the Johnson–Nyquist (thermal) noise of the photodiode used as a light detector. The model establishes a clear relationship between the electric signal and the quality of the final image. This allows us to perform a systematic study of the quality of the image obtained with single-pixel cameras in different contexts. In particular, we study the signal-to-noise ratio as a function of the optical power of the incident light, the wavelength, and the photodiode temperature. The results of the model are compared with those obtained experimentally with a single-pixel camera

Single-Pixel Imaging Using Photodiodes

Single-pixel cameras (SPCs) have been successfully used in different imaging applications during the last decade. In these techniques, the scene is illuminated with a sequence of microstructured light patterns codified onto a programmable spatial light modulator. The light coming from the scene is collected by a bucket detector, such as a photodiode. The image is recovered computationally from the photodiode electric signal. In this context, the signal quality is of capital value. One factor that degrades the signal quality is the noise, in particular, the photocurrent, the dark-current, and the thermal noise sources. In this chapter, we develop a numerical model of a SPC based on a photodiode, which considers the characteristics of the incident light, as well as the photodiode specifications. This model includes the abovementioned noise sources and infers the signal-to-noise ratio (SNR) of the SPCs in different contexts. In particular, we study the SNR as a function of the optical power of the incident light, the wavelength, and the photodiode temperature. The results of the model are compared with those obtained experimentally with a SPC

Asociación entre la posición socioeconómica y el riesgo de trastornos de la conducta alimentaria en mujeres entre 18 a 30 años de Lima Metropolitana, 2021

Solicitud de embargo por publicación en revista indexadaANTECEDENTES: Existen pocas investigaciones realizadas en América Latina, que evidencian un mayor riesgo de trastornos de la conducta alimentaria (TCA) en mujeres pertenecientes a una posición socioeconómica (PSE) más alta. OBJETIVO: Determinar la asociación entre la PSE y el riesgo de TCA en mujeres entre 18 a 30 años de Lima Metropolitana. METODOLOGÍA: Estudio transversal-analítico, difundida por una encuesta online. Se evaluó el TCA con el cuestionario EAT-26 y se midió la PSE utilizando la escalera social subjetiva de MacArthur, el grado de educación de los padres y los ingresos familiares. Para determinar la asociación entre ambas variables, se usó el modelo lineal generalizado de la familia log Poisson y se presentaron los resultados en razón de prevalencia. RESULTADOS: La mediana de la edad de las encuestadas fue de 22 años. Se encontró 59% (RPc 0,41 IC95%0,17;0,96 p=0,042) menor probabilidad de presentar riesgo de TCA en mujeres con padres que han culminado sus estudios universitarios. Se observó 62% (RPc 0,38 IC95%0,15;0,94 p=0,038) menor probabilidad de presentar riesgo de TCA en mujeres con padres con educación superior técnica completa. Existe una prevalencia de riesgo de TCA del 21,6% en mujeres. CONCLUSIONES: Se encontró asociación entre mayor educación del padre y menor riesgo de TCA, aunque no se encontró asociación entre ingresos, ni la posición socioeconómica subjetiva y el riesgo de TCA.BACKGROUND: There exists a limited amount of research, conducted in Latin American countries, that suggests a higher risk of eating disorders in women belonging to a higher socioeconomic position. OBJECTIVE: Determine the association between socioeconomic position and the risk of eating disorders in women between 18 and 30 years in Lima Metropolitan, 2021. METHODS: Cross-sectional-analytical study. Women diagnosed with polycystic ovary syndrome were excluded. Eating disorder was assessed with the EAT-26 questionnaire and socioeconomic position was measured using the MacArthur subjective social scale, parental education and household income. The general linear mode was used to determine the association between both variables. The results were presented in prevalence ratio. RESULTS: An association was determined between parental education and the lower probability of presenting risk of eating disorders in women (PRa 0.41 CI95% 0.17;0.96 p= 0.042), nor in the subjective socioeconomic position (PRa 0.38 CI95% 0.13;1.08 p=0.072). Also, it was found that 21.6% of the participants presented symptoms of eating disorders. CONCLUSIONS: An association was found between parental education and the risk of presenting risk of eating disorders in women. Although no association was found between income or subjective socioeconomic position and the risk of eating disorders, there is a prevalence of the risk of eating disorders in women.Tesi

Vulnerabilidad social en mujeres embarazadas de una comuna de la Región Metropolitana

Indexación: ScieloThe program "Chile grows with you" is a part of the Chilean social protection system oriented to decrease social inequities from pregnancy (a socially secure pregnancy) to four years of age, directed to the poorest 40% of the popula-tion. Aim: To determine the incidence of social vulnerability and its determinants, starting at the gestation period. Material and Methods: Data was obtained from anonymous secondary data based on the records of the first assessment of pregnant women and from social protection surveys, provided by the Ministry of Planning and Cooperation. Results: The incidence of social vulnerability was high. However there was a disparity between the figures obtained from the social protection records and the survey carried out during the first assessment of pregnant women (91 and 27% respectively). The psychosocial risk was higher among vulnerable women (42% compared to 28% among women not considered vulnerable). This risk was associated with lack of family support, depressive symptoms, gender violence, substance abuse and maternity confl icts. Working conditions were precarious with a low level of social security, there were habitability problems, disability, dependency, female householders and a mean income below the threshold of poverty. Conclusions: Among vulnerable families, there are adverse determinants that attempt against a socially secure preg-nancy and integral development of children.http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0034-98872011000600007&lang=pt#bac

Differential Flag Leaf and Ear Photosynthetic Performance Under Elevated (CO2) Conditions During Grain Filling Period in Durum Wheat

Elevated concentrations of CO2 (CO2) in plants with C3 photosynthesis metabolism, such as wheat, stimulate photosynthetic rates. However, photosynthesis tends to decrease as a function of exposure to high (CO2) due to down-regulation of the photosynthetic machinery, and this phenomenon is defined as photosynthetic acclimation. Considerable efforts are currently done to determine the effect of photosynthetic tissues, such us spike, in grain filling. There is good evidence that the contribution of ears to grain filling may be important not only under good agronomic conditions but also under high (CO2). The main objective of this study was to compare photoassimilate production and energy metabolism between flag leaves and glumes as part of ears of wheat (Triticum turgidum L. subsp. durum cv. Amilcar) plants exposed to ambient [a(CO2)] and elevated [e(CO2)] (CO2) (400 and 700 μmol mol–1, respectively). Elevated CO2 had a differential effect on the responses of flag leaves and ears. The ears showed higher gross photosynthesis and respiration rates compared to the flag leaves. The higher ear carbohydrate content and respiration rates contribute to increase the grain dry mass. Our results support the concept that acclimation of photosynthesis to e(CO2) is driven by sugar accumulation, reduction in N concentrations and repression of genes related to photosynthesis, glycolysis and the tricarboxylic acid cycle, and that these were more marked in glumes than leaves. Further, important differences are described on responsiveness of flag leaves and ears to e(CO2) on genes linked with carbon and nitrogen metabolism. These findings provide information about the impact of e(CO2) on ear development during the grain filling stage and are significant for understanding the effects of increasing (CO2) on crop yield.This research was supported by the Spanish Innovation and Universities Ministry (PCIN-2017-007) and the Ministry of Education and Sciences (grants PID2019-107154RB-100; PID2019-110445RB-100). RV was the recipient of an FPI fellowship from the Spanish Ministry of Economy and Competitiveness (BES-2010-031029). RS-B was supported by the Juan de la Cierva program JDC-Formación (FJCI-2016-28164)