Search results for "Fall"
showing 10 items of 964 documents
Earth resistance measurements in urban contexts: Problems and possible solutions
2017
Both EN 50522 and IEEE Std. 81 propose the Fall of Potential Method (FPM) to carry out the measurement of the resistance to earth of an Earthing System (ES). However, in urban areas, the recommended distances between the ES and auxiliary electrodes are not easy to respect, due to the presence of buildings and tarmac. Moreover, unknown buried metallic parts, as well as the interconnection among the ESs made by the Distributor System Operator, could modify the earth potential profile of the area, affecting the measurement results. In this paper, the issues that could affect the measurement result if FPM is used in an urban context are presented. A parametric analysis, carried out with Comsol …
Paradoksi un maldīgi spriedumi statistikā
2021
Šajā darbā tiek aprakstīti vairāki paradoksi un maldīgie spriedumi statistikā, kurus ir būtiski izprast, lai izdarītu korektus secinājumus par datiem dažādās zinātnēs, piemēram, epidemoloģijā, tiesību zinātnē, sociālajās zinātnēs. Kaut arī liela daļa no šiem fenomeniem tika aplūkoti jau 20. gadsimtā, ar paradoksiem saistītie rezultāti vēl joprojām var būt intuitīvi nesaprotami, kaut arī no statistikas viedokļa tie ir korekti. Savukārt, maldīgie spriedumi, kuri var likties loģiski, bet noved pie nepareiza rezultāta, joprojām ir sastopami rakstos. Darbā fenomeni tiek aprakstīti un doti piemēri.
Data from an international multi-centre Study of Statistics and Mathematics Anxieties and Related Variables in University Students (the SMARVUS Datas…
2023
This large, international dataset contains survey responses from N = 12,570 students from 100 universities in 35 countries, collected in 21 languages. We measured anxieties (statistics, mathematics, test, trait, social interaction, performance, creativity, intolerance of uncertainty, and fear of negative evaluation), self-efficacy, persistence, and the cognitive reflection test, and collected demographics, previous mathematics grades, self-reported and official statistics grades, and statistics module details. Data reuse potential is broad, including testing links between anxieties and statistics/mathematics education factors, and examining instruments’ psychometric properties across differ…
Effetti del fallimento sui rapporti giuridici preesistenti.
2011
Primary Epithelial Ovarian Neoplasms: New Concepts Concerning Origin, Pathogenesis and Classification Based on Morphology, Immunomarkers, Molecular F…
2011
The World Health Organization (WHO) classification of ovarian tumors, which first appeared in 1983 and since then has undergone a number of revisions, is based on morphologic features as well as on the concept that each category of ovarian tumors develops from a specific ovarian cell. According to this histogenetic classification, all the epithelial ovarian neoplasms are derived from the ovarian surface epithelium and/or from ovarian inclusion cysts, which are lined by the above epithelial cells. In recent years, a new approach to morphologic data, increasing presumptive evidence that the cell of origin of most, if not all, ovarian epithelial tumors may be extraovarian, especially from fall…
Interplay Between MicroRNAs and Oxidative Stress in Ovarian Conditions with a Focus on Ovarian Cancer and Endometriosis
2019
Ovarian cancer and endometriosis are two distinct gynaecological conditions that share many biological aspects incuding proliferation, invasion of surrounding tissue, inflammation, inhibition of apoptosis, deregulation of angiogenesis and the ability to spread at a distance. miRNAs are small non-coding RNAs (19–22 nt) that act as post-transcriptional modulators of gene expression and are involved in several of the aforementioned processes. In addition, a growing body of evidence supports the contribution of oxidative stress (OS) to these gynaecological diseases: increased peritoneal OS due to the decomposition of retrograde menstruation blood facilitates both endometriotic lesion developmen…
Comparative study of molecular processes and factors affecting endometrial function in subfertile patients with uterine disorders
2021
El endometrio humano es un tejido dinámico y complejo que solo es receptivo al embrión durante un corto periodo de tiempo. Por lo tanto, la identificación de trastornos y factores que impidan que el endometrio adquiera un fenotipo receptivo es crucial para poder prevenir fallos de implantación embrionaria y aumentar las tasas de embarazo. Los trastornos uterinos son complejos, multifactoriales y poligénicos y a menudo comprometen la fertilidad femenina, aunque se desconoce con exactitud cómo afectan a la adquisición de la receptividad endometrial. Además, estos trastornos carecen actualmente de un tratamiento efectivo, a menudo presentan comorbilidad entre ellos y su incidencia aumenta con …
Fallas demográficas y rendimiento de los equipos de trabajo: El papel mediador del conflicto, el afecto negativo, y la reflexividad grupal
2015
Los equipos son un elemento clave en las organizaciones debido, al menos en parte, a los distintos trabajos que informan de las relaciones positivas entre el trabajo basado en equipos y la calidad de los productos y servicios ofrecidos por una organización (Gibson, Porath, Benson y Lawler, 2007). Al mismo tiempo que las organizaciones, debido a las razones prácticas señaladas, han incrementado sus experiencias en la utilización de equipos, los equipos en las organizaciones han visto incrementada su diversidad (Jackson, Joshi, & Erhardt, 2003; Triandis, Kurowski & Gelfand, 1994; Williams & O¿Reilly, 1998). La globalización de los negocios, el aumento en la incorporación de la mujer y las min…
The use of barley straw residues to avoid high erosion and runoff rates on persimmon plantations in Eastern Spain under low frequency-high magnitude …
2016
[EN] Soil and water losses due to agricultural mismanagement are high and non-sustainable in many orchards. An experiment was set up with rainfall simulation at 78 mm h(-1) over 1 hour on 20 paired plots of 2 m(2) (bare and straw covered) in new persimmon plantations in Eastern Spain. Effects of straw cover on the control of soil and water losses were assessed. An addition of 60% straw cover (75 gm(-2)) resulted in delayed ponding and runoff generation and consequently reduced water losses from 60% to 13% of total rainfall. The straw cover reduced raindrop impact and thus sediment detachment from 1014 to 47 g plot(-1) h(-1). The erosion rate was reduced from 5.1 to 0.2 Mg ha-(1) h(-1). The …
Aplicacions actuals de la teoria de fallades de mercat (en Economia)
2009
En este artículo, se proponen algunas aplicaciones actuales de la teoría de fallos de mercado en el marco de un grado de Economía. Son nuevos contextos en los que adaptar conocimientos existentes. Aunque sea una pequeña contribución, a partir de mi experiencia en las aulas, puedo afirmar que es extraordinariamente motivadora para el alumnado.