El abandono escolar de adolescentes en España

El abandono escolar sigue siendo una realidad presente entre los adolescentes de la sociedad actual en la que la familia y la escuela ocupan un papel prioritario, tanto positiva como negativamente. Tanto es así que datos recientes revelan que España es, en el año 2021, el sexto país con mayor tasa de abandono escolar. Tras el estudio de las características del adolescente actual, los riesgos a los que se expone, las causas del abandono y las diferencias entre las Comunidades Autónomas de España, se presenta una propuesta de intervención para prevenir y hacer frente al abandono escolar, sugiriendo una serie de acciones o recomendaciones que pueden llevarse a cabo desde la familia y la escuela para prevenir o mitigar dicho fenómeno.School dropout continues to be a reality among adolescents in today's society in which the family and the school play a priority role, both positively and negatively. So much so that recent data reveal that Spain is, in the year 2021, the sixth country with the highest school dropout rate. After studying the characteristics of today's adolescents, the risks to which they are exposed, the causes of dropout and the differences between the Autonomous Communities of Spain, is presented a proposal for intervention to prevent and deal with school dropout, suggesting a series of actions or recommendations that can be carried out by the family and the school to prevent or mitigate this phenomenon

Extension of Incremental Linear Discriminant Analysis to Online Feature Extraction under Nonstationary Environments

In this paper, a new approach to an online feature extraction under nonstationary environments is proposed by extending Incremental Linear Discriminant Analysis (ILDA). The extended ILDA not only detect so-called “concept drifts” but also transfer the knowledge on discriminant feature spaces of the past concepts to construct good feature spaces. The performance of the extended ILDA is evaluated for the benchmark datasets including sudden changes and reoccurrence in concepts

Reproducibility of hemodynamic, cardiac autonomic modulation and blood flow assessments in patients with intermittent claudication

Objective: To identify, in patients with peripheral artery disease and intermittent claudication (IC), the reproducibility of heart rate (HR), blood pressure (BP), rate pressure product (RPP), heart rate variability (HRV), and forearm and calf blood flow (BF) and vasodilatory assessments. Methods: Twenty-nine patients with IC underwent test and retest sessions, 8-12 days apart. During each session, HR, BP, HRV, BF and vasodilatory responses were measured by electrocardiogram, auscultation, spectral analysis of HRV (low frequency, LFR-R; high frequency, HFR-R) and strain gauge plethysmography (baseline BF, post-occlusion BF, post-occlusion area under the curve, AUC). Reproducibility was determined by intraclass coefficient correlation (ICC), typical error, coefficient of variation (CV) and limits of agreement. Results: The ICC for HR and BP were > 0.8 with CV 0.9 while CV were 0.9 while CV were < 19%; variable ICC and CV for vasodilatory responses were exhibited for calf (0.653 – 0.770; 35.2 – 37.7%) and forearm (0.169 – 0.265; 46.2 – 55.5%). Conclusions: In male patients with IC, systemic hemodynamic (HR and BP), cardiac autonomic modulation (LFR-R and HFR-R) and forearm and calf baseline BF assessments exhibited excellent reproducibility, whereas the level of reproducibility for vasodilatory responses were moderate to poor. Assessment reproducibility has highlighted appropriate clinical tools for the regular monitoring of disease/intervention progression in patients with IC