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1
artículo
Publicado 2022
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The interactions between predators and their prey in the real world are usually affected by diverse ecological phenomena acting on both the prey and the predators. Collaboration or cooperation between predators is one of those behaviors, which has received less attention from researchers than competition among consumers. These contacts are important aspects of the dynamics of food chains and trophic webs. In this work, we will study the influence of collaboration or cooperation (hunting cooperation) between predators to consume (or capture) their favorite prey, which are affected by an effect Allee weak. We extend the results obtained in a previously published model, considering only collaboration between predators and in which the Allee effect is absent.
2
artículo
Publicado 2023
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The burnout syndrome is an occupational health indicator that intervenes in the teaching-learning process and may harm the quality of education offered by institutions. The relationship between individual characteristics and the work environment may have different effects over the teaching performance. The current investigation seeks to analyze the fit of a model to predict teaching performance based on the teacher burnout, while including individual characteristics and the work environment perception in university teachers. The sample is composed of 94 teachers who provided information related to the Conscientiousness trait, their burnout and engagement levels, their teaching performance, and their perception of the work environment. This quantitative and cross-sectional research makes use of structural equation models to test its hypothesis. The second tested model showed the best fit,...
3
artículo
Publicado 2024
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This research sought to describe the physical, psychological, social, and academic consequences of university students during the first year of confinement, and to identify the main coping strategies used. Following a qualitative methodology, 67 university students from different regions of the country were interviewed. The results showed that there was an initial acceptance of confinement by students, as an extreme sanitary measure necessary to reduce cases of contagion, but that as time went by it began to be perceived as a terrible experience characterized by the loss of routines, lack of control and permanent uncertainty that ended up affecting different areas of their functioning. To cope with these consequences, the students used various strategies, mainly those focused on active problem solving (maintaining fixed schedules, seeking contact with significant people, implementin...
4
artículo
Publicado 2025
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The relationship between executive functions (EF), creative personality, and academic performance in Argentine university students was examined. A total of 248 students (M = 22.97 years, SD = 4.43) from various Argentine provinces participated. The Adult Executive Functioning Inventory (ADEXI), the Cognitive Flexibility Scale, the Creative Behavior Scale (ECC), and the Creative Personality Scale (EPC) were used, along with academic performance data and sociodemographic information. Data were collected online through Google Forms and analyzed using Spearman correlations and mediation analysis with robust Maximum Likelihood estimator and Bootstrap. Cognitive flexibility exhibited the most robust correlation with grade point average (r = .281, p < .001), followed by working memory difficulties (r = -.234, p < .001). Creative personality correlated positively with grade point average (...
5
tesis de grado
Publicado 2026
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Antecedentes: Se conoce poco sobre las consecuencias de la violencia durante el embarazo en el desarrollo neurológico infantil, especialmente en la función simbólica (capacidad de expresarse mediante imágenes mentales). Objetivo: Evaluar la asociación entre violencia física durante el embarazo según el perpetrador en madres de niños de 24 -71 meses y función simbólica adecuada. Metodología: Análisis secundario de la Encuesta Demográfica y de Salud Familiar-ENDES, Perú 2021-2022. La violencia física se midió con preguntas basadas en CTS-2 y la función simbólica con ítems de ChiPPA y PPE-DC. Se estimó la asociación mediante modelos lineales generalizados (familia Poisson, enlace log), considerando el diseño complejo de la encuesta. Resultados: El 60,2% de los niños no presentó función simbólica adecuada. El 4,8% de las madres sufrió violencia física durante e...
6
artículo
Publicado 2010
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Assesses the way relate the familiar and interactive styles (decision-making and tendency to risk) with the video game addiction among adolescents, as well as the consequences that generates addiction games assertiveness, aggressiveness and academic performance. It employed a stratified probability sample of schoolchildren in state secondary schools Metropolitan Lima, including schoolchildren of both sexes aged between 11 and 18 years. The results indicate that 85% of adolescents have access to video games, even if the boys play more than women, while women (70.6%) and men (94.7%) make use of high videogame. Notable among the places where the games are played the home (40%) and in the booths Internet (42%). As to the relationship between the use of video games and psychological variables (family functioning, decision making and aggressive behavior)...
7
artículo
Publicado 2010
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Assesses the way relate the familiar and interactive styles (decision-making and tendency to risk) with the video game addiction among adolescents, as well as the consequences that generates addiction games assertiveness, aggressiveness and academic performance. It employed a stratified probability sample of schoolchildren in state secondary schools Metropolitan Lima, including schoolchildren of both sexes aged between 11 and 18 years. The results indicate that 85% of adolescents have access to video games, even if the boys play more than women, while women (70.6%) and men (94.7%) make use of high videogame. Notable among the places where the games are played the home (40%) and in the booths Internet (42%). As to the relationship between the use of video games and psychological variables (family functioning, decision making and aggressive behavior)...
8
artículo
Child maltreatment and resilience in adulthood: a protocol for a systematic review and meta-analysis
Publicado 2023
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Background: Although child maltreatment (CM) has been linked to health problems and poor psychosocial functioning, not all individuals exposed to CM develop or experience negative consequences later in life. This suggests that some individuals show resilience after being exposed to CM. However, conclusions have been limited by inconsistent findings across different CM subtypes and resilience domains. Objective: To develop a protocol for conducting a systematic review and meta-analysis to quantify associations between CM (overall and its subtypes) and resilience (global and its multiple domains) in adulthood, and to examine moderators and mediators of these associations. Method: PubMed, PsycINFO, Embase, Scopus, and Web of Science will be searched to identify relevant studies on the association between CM (exposure) and resilience (outcome) in adults (≥ 18 years). Data will be screened ...
9
tesis de grado
Publicado 2023
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El presente 2019 marco un precedente con la aparición del covid 19, también ha sido motivo de diversos estudios con el fin de resolver el mejor tratamiento. A su vez las consecuencias después de haber contraído el virus dejaron grandes secuelas que causaron disnea, fatiga, discapacidad laboral, depresión entre otros. Sin embargo, la capacidad funcional ha sido la determinante que ha causado gran discapacidad por sobre otras. Por tal motivo la rehabilitación cardio respiratoria pudo abrirse de un camino a lograr el estudio, cuantificable de los avances en tratamiento sobre las secuelas de la enfermedad, de esta manera el presente estudio permite conocer que la fuerza muscular es un factor directamente relacionado a las capacidades funcionales del ser humano. Será de gran importancia conocer el impacto que tuvieron los pacientes después del covid 19, y así mismo su avance en devol...
10
artículo
Publicado 2020
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Human life became largely dependent on agricultural products after distinct crop-domestication events occurred around 10,000 years ago in different geographical sites. Domestication selected suitable plants for human agricultural practices with unexpected consequences on plant microbiota, which has notable effects on plant growth and health. Among other traits, domestication has changed root architecture, exudation, or defense responses that could have modified plant microbiota. Here we present the comparison of reported data on the microbiota from widely consumed cereals and legumes and their ancestors showing that different bacteria were found in domesticated and wild plant microbiomes in some cases. Considering the large variability in plant microbiota, adequate sampling efforts and function-based approaches are needed to further support differences between the microbiota from wild an...
11
artículo
Publicado 2010
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Premature ovarian failure is characterized by secondary amenorrhea affecting a woman before the age of 40, leading to hypoestrogenism, infertility, and consequences of premature menopause, such as osteoporosis, cardiovascular disease, neurovegetative alterations, and others. Follicular exhaustion is due to either follicles shortage or oocytes accelerated destruction. Main causes are genetic, autoimmune and iatrogenic. Among genetic causes Xq and Xp deletions, translocations, numeric aberrations (47,XXX, 45,X0), fragil X premutations are frequent. Type I and type II poliglandular insufficiency are important causes among autoimmune diseases. Iatrogenia may occur in surgery of the ovarios and Fallopian tubes and with oncologic treatment that destroys germinal cells in young women with breast cancer. Nowadays use of ovarian function and fertility preservation techniques are suggested. Once t...
12
artículo
Publicado 2022
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The role of excess and deficit of thyroid hormone in the pathogenesis of mood disorders has been recorded for almost two centuries. Thyroid pathologies, the most numerous among endocrine diseases, are causally associated with psychiatric pathology in a significant percentage of cases. Specifically, hyperthyroidism produces multiple psychopathological manifestations of anxious and depressive type, manic episodes and, infrequently, psychosis. Although the influence of the thyroid axis on the neural pathways of norepinephrine, dopamine, and serotonin plays a fundamental neurobiological role in these phenomena, there are still multiple underlying mechanisms to be elucidated. Given the need for a broad and comprehensive differential diagnosis between primary and secondary psychiatric pathologies, we report the case of a 52-year-old patient with psychotic depression in whom the late diagnosis ...
13
artículo
Publicado 2008
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This book, like the first volume, is basically a collection of papers with the principal aim of offering the practical applications of the theory presented in volume 1. In consequence, this review will be, also, intends chapter by chapter. The first chapter intend to show communication in plants under the biosemiotic paradigm, which involves sign processes that are realized among plants of different species, plants with other organisms, and also among cells, and, even, in cells of the same plant. To that aim the author provides interesting examples in each kind of interaction. What is worth to note is the proposition that chemical molecules function as signs and that they are interpreted which implies that they are differing from molecules that not form part of messages, which are noise. In connection to this it should be noted the sense of the term semiochemicals that the author specifi...
14
artículo
Publicado 2008
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This book, like the first volume, is basically a collection of papers with the principal aim of offering the practical applications of the theory presented in volume 1. In consequence, this review will be, also, intends chapter by chapter. The first chapter intend to show communication in plants under the biosemiotic paradigm, which involves sign processes that are realized among plants of different species, plants with other organisms, and also among cells, and, even, in cells of the same plant. To that aim the author provides interesting examples in each kind of interaction. What is worth to note is the proposition that chemical molecules function as signs and that they are interpreted which implies that they are differing from molecules that not form part of messages, which are noise. In connection to this it should be noted the sense of the term semiochemicals that the author specifi...
15
artículo
Publicado 2024
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This research sought to describe the physical, psychological, social, and academic consequences of university students during the first year of confinement, and to identify the main coping strategies used. Following a qualitative methodology, 67 university students from different regions of the country were interviewed. The results showed that there was an initial acceptance of confinement by students, as an extreme sanitary measure necessary to reduce cases of contagion, but that as time went by it began to be perceived as a terrible experience characterized by the loss of routines, lack of control and permanent uncertainty that ended up affecting different areas of their functioning. To cope with these consequences, the students used various strategies, mainly those focused on active problem solving (maintaining fixed schedules, seeking contact with significant people, implementin...
16
artículo
Publicado 2020
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In order to evaluate the forms of interaction in the main Instagramers from Peru and Colombia, an exploratory analysis of their profiles was carried out on the Instagram audiovisual platform during 2019. For this reason, firstly, the Heepsy tool was used to establish the influencers with greater impact within the platform in both countries and then, through the monitoring tools Fan Page Karma and Social Blade, to determine a set of variables and parameters regarding their interaction. The results show that the audience index is higher for Instagramers from Colombia than for the ones from Peru. In addition, there is a clear trend among digital audiences to value content through likes as a sign of interaction with it, but on the other hand, there is a representative decrease in expressing their impressions with words and comments regarding what they observe; this is also established by the...
17
artículo
The way in which individuals and groups explain poverty shapes how they relate to it. This paper inquires the beliefs of university students about the causes of poverty and analyses the relation of these beliefs with their professional training area. An assessment instrument that considers three type of attributions -individualist, socio-structural and fatalistic-, was administered to a sample of 448 advanced university students belonging to nine social sciences programs, aged between 19 and 42 years (M = 22.92; SD = 3.12). The results obtained indicate important variations in the explanations about poverty according to the professional training area. Students of economic sciences emphasized the importance of individual factors, psychology and law students tended to mixed explanations and sociology students showed a wide preference for socio-structural causes over individual and fatalist...
18
artículo
Publicado 2024
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Background: A substantial number of children in the world are regularly subjected to physical punishment by their parents as a method of upbringing. Evidence suggests that it has negative effects on the development of brain function. However, evidence regarding its association with verbal communication is limited and heterogeneous. It is also unknown whether the effects are the same in both boys and girls; especially in the contexts of developing countries, where the highest rates of physical punishment are found. Objective: This investigation aimed at analyzing the association between physical punishment administered by both fathers and mothers and effective verbal communication among children aged 9–36 months according to sex. Methods: A secondary analytical cross-sectional study was conducted based on the 2018–2019 Peruvian Demographic and Family Health Survey. Physical punishment...
19
artículo
Publicado 2013
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Iron deficiency is the most prevalent deficiency disorder and iron deficiency anemia the most frequent form of anemia in pregnant women. Minor causes of anemia are folate and vitamin B12 deficiency, hemoglobinopathy and hemolytic anemia. Anemia is defined as hemoglobin <110 g/L in 1st and 3rd trimester and <105 g/L in 2nd trimester. The diag nosis relies on analysis of hemoglobin, a full blood count and plasma ferritin, which can be supported by plasma transferrin saturation and serum soluble transferrin receptor (sTfR). Among non-pregnant women of reproductive age, 40% have ferritin below 30 μg/L, which indicates small or absent iron reserves and therefore a poor iron status with respect to future pregnancy. Requirements for absorbed iron increase during pregnancy from 0.8 mg/day in 1st trimester to 7.5 mg/day in 3rd trimester, on the average 4.4 mg/day. Among women of reproductiv...
20
artículo
Publicado 2013
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Iron deficiency is the most prevalent deficiency disorder and iron deficiency anemia the most frequent form of anemia in pregnant women. Minor causes of anemia are folate and vitamin B12 deficiency, hemoglobinopathy and hemolytic anemia. Anemia is defined as hemoglobin <110 g/L in 1st and 3rd trimester and <105 g/L in 2nd trimester. The diag nosis relies on analysis of hemoglobin, a full blood count and plasma ferritin, which can be supported by plasma transferrin saturation and serum soluble transferrin receptor (sTfR). Among non-pregnant women of reproductive age, 40% have ferritin below 30 μg/L, which indicates small or absent iron reserves and therefore a poor iron status with respect to future pregnancy. Requirements for absorbed iron increase during pregnancy from 0.8 mg/day in 1st trimester to 7.5 mg/day in 3rd trimester, on the average 4.4 mg/day. Among women of repro...
