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Estructura gramatical del español: el flexema nominal y el flexema verbal
(Universidad de Chile, Facultad de Filosofía y Humanidades, 1995)
' - avenlclría), y con mayor razón cuando
en esta unidad gráfica algunos de sus fragmentos se sueldan por medio de
una crasis (v. gr. terzte eri el aire > tenterzelaire; terzte erz pie > tentenzpié;
agua ardiente > aguardierzte; para aguas > paraguas).
1...
Homenale a Rodolfo Oroz BFUCh XXXV í 1095- 1906): 453-52 1 Estructura gramatical del español: el flexema nominal y el flexema verbal O. INTRODUCCION 0.1. El hecho indiscutible de que la estructura de una lengua...
Homenale a Rodolfo Oroz BFUCh XXXV í 1095- 1906): 453-52 1 Estructura gramatical del español: el flexema nominal y el flexema verbal O. INTRODUCCION 0.1. El hecho indiscutible de que la estructura de una lengua...
Criterios de atribución en materia de cuidado personal y relación directa y regular : análisis práctico
(Universidad de Chile, 2011)
El objetivo de este trabajo investigativo es conocer la opinión de los operadores del Derecho sobre materias relacionadas, principalmente, con el cuidado personal y la relación directa y regular, determinando, de esta forma, la congruencia o...
El rol de las señales acústicas en las interacciones sexuales y la estructura social de la ranita de Darwin (rhinoderma darwinii)
(Universidad de Chile., 2019-05)
El presente estudio se propuso describir el sistema de comunicación en la ranita de Darwin (Rhinoderma darwinii), una especie en que los machos realizan cuidado parental incubando las larvas en el interior de su saco vocal. Observaciones...
The present study aimed to describe the communication system in the Darwin frog (Rhinoderma darwinii), a species in which the males perform parental care incubating the larvae inside their vocal sac. Naturalistic observations had suggested that vocalization of adult males consists of tonal calls of multiple notes, which are emitted to attract the attention of females, as in most anurans. In captivity, females have been observed emitting calls of a single note during mating. An unresolved question around this phenomenon is whether male and female calls of R. darwinii are dimorphic in their bioacoustic characteristics and in the extent to which they are used as signals for sexual recognition in social interactions. To contribute to clarify these issues, the variability of male calls of the species was characterized using recordings conducted in different populations. Subsequently, we compared the acoustic properties and the occurrence of vocalization of pregnant and non-pregnant males and females from November 2015 to February 2016 on the island of Chiloé, Chile. We also recorded natural vocal duets and evaluated individual evoked vocal responses to playback stimuli that consisted of calls of each sexual status. Call rate, phase angles, sound pressure level, number of overlapping calls and overlapping delay of calls were measured to determine the differential responses in natural duets and in the playback experiments. Finally, we used social network analysis to evaluate the relationship among call similarity of individuals and the home range overlap of R. darwinii. We found that call variation of non-pregnant male calls between populations is related to differences in body size of call emitters and that their calls are highly variable at the individual level. In addition to non-pregnant males, females and pregnant males (males incubating larvae) produce vocalizations in the context of sexual advertisement alone or in alternation with conspecifics, having a similar repertoire of one to six notes, four-note calls being more commonly issued the by the three sexual status. In addition, calls of males with different reproductive status did not differ in their acoustic characteristics, but calls of females differed by having longer notes and calls duration, and a lower dominant frequency than that of both types of males. In recordings of natural duets, we found that males interact more frequently with other males than with females, but we did not observe vocal interactions among females. In the experiments of evoked responses to playbacks we found that males and females maintain a similar call rate in response to stimuli of the three sexual status. However, females respond with lower sound pressure level to the female stimuli and with a greater phase angle as compared to pregnant male stimuli, while pregnant males emitted a smaller number of overlapping calls in response to female stimuli. In addition, we propose that call overlap is a form of intra-sexual interaction performed by males and females in response to stimuli of their own sex probably as a non-aggressive vocal competition mechanism. In the population studied in Chiloé, we found that call similarity of the Darwin's frogs was not related to home range overlap. Using empirical data on the probability of movement of individuals between moss patches, we find through a network model that the social structure is slightly affected by larger individual’s movements between groups. Overall, our evidence supports the hypothesis that both sexes can recognize the other sex despite the minimal differences between male and female calls. Even though our analyses showed no differences between call characteristics of pregnant and non-pregnant males, females responded differentially to pregnant male stimuli. This suggests that there are characteristics in male calls that probably signalize the different sexual status of males that remained undetected in our study. Altogether, our data suggest that the calls allow to regulate social interactions in this frog species....
The present study aimed to describe the communication system in the Darwin frog (Rhinoderma darwinii), a species in which the males perform parental care incubating the larvae inside their vocal sac. Naturalistic observations had suggested that vocalization of adult males consists of tonal calls of multiple notes, which are emitted to attract the attention of females, as in most anurans. In captivity, females have been observed emitting calls of a single note during mating. An unresolved question around this phenomenon is whether male and female calls of R. darwinii are dimorphic in their bioacoustic characteristics and in the extent to which they are used as signals for sexual recognition in social interactions. To contribute to clarify these issues, the variability of male calls of the species was characterized using recordings conducted in different populations. Subsequently, we compared the acoustic properties and the occurrence of vocalization of pregnant and non-pregnant males and females from November 2015 to February 2016 on the island of Chiloé, Chile. We also recorded natural vocal duets and evaluated individual evoked vocal responses to playback stimuli that consisted of calls of each sexual status. Call rate, phase angles, sound pressure level, number of overlapping calls and overlapping delay of calls were measured to determine the differential responses in natural duets and in the playback experiments. Finally, we used social network analysis to evaluate the relationship among call similarity of individuals and the home range overlap of R. darwinii. We found that call variation of non-pregnant male calls between populations is related to differences in body size of call emitters and that their calls are highly variable at the individual level. In addition to non-pregnant males, females and pregnant males (males incubating larvae) produce vocalizations in the context of sexual advertisement alone or in alternation with conspecifics, having a similar repertoire of one to six notes, four-note calls being more commonly issued the by the three sexual status. In addition, calls of males with different reproductive status did not differ in their acoustic characteristics, but calls of females differed by having longer notes and calls duration, and a lower dominant frequency than that of both types of males. In recordings of natural duets, we found that males interact more frequently with other males than with females, but we did not observe vocal interactions among females. In the experiments of evoked responses to playbacks we found that males and females maintain a similar call rate in response to stimuli of the three sexual status. However, females respond with lower sound pressure level to the female stimuli and with a greater phase angle as compared to pregnant male stimuli, while pregnant males emitted a smaller number of overlapping calls in response to female stimuli. In addition, we propose that call overlap is a form of intra-sexual interaction performed by males and females in response to stimuli of their own sex probably as a non-aggressive vocal competition mechanism. In the population studied in Chiloé, we found that call similarity of the Darwin's frogs was not related to home range overlap. Using empirical data on the probability of movement of individuals between moss patches, we find through a network model that the social structure is slightly affected by larger individual’s movements between groups. Overall, our evidence supports the hypothesis that both sexes can recognize the other sex despite the minimal differences between male and female calls. Even though our analyses showed no differences between call characteristics of pregnant and non-pregnant males, females responded differentially to pregnant male stimuli. This suggests that there are characteristics in male calls that probably signalize the different sexual status of males that remained undetected in our study. Altogether, our data suggest that the calls allow to regulate social interactions in this frog species....
EFL teaching and motivation in higher education during emergency online learning
(Universidad de Chile, 2020)
UNIVERSIDAD DE CHILE
FACULTAD DE FILOSOFÍA Y HUMANIDADES
DEPARTAMENTO DE LINGÜÍSTICA
“EFL Teaching and Motivation in Higher Education during Emergency
Online Learning”
Informe Final de Seminario de Grado para...
Optar al Grado de Licenciado en Lengua y Literatura Inglesas Alumnos Participantes Pedro Ignacio Acevedo Arce Olivia Isabel Cáceres Medina Manuel Alejandro Correa Martínez Daniela Cecilia Montefinale Middleton Javier Ignacio Nieto Velásquez...
Optar al Grado de Licenciado en Lengua y Literatura Inglesas Alumnos Participantes Pedro Ignacio Acevedo Arce Olivia Isabel Cáceres Medina Manuel Alejandro Correa Martínez Daniela Cecilia Montefinale Middleton Javier Ignacio Nieto Velásquez...
Validación del software biodieselFAO como herramienta de apoyo a la toma de decisión en proyectos de producción de biodiesel
(Universidad de Chile, 2011)
Los sistemas de apoyo a la toma de decisión, son herramientas que cuentan con sustento teórico y científico para poder identificar y medir riesgos, juegan cada vez un rol de mayor importancia en las decisiones que se toman dentro de una institución...
Systems to support decision making, are tools which identify and measure risks with theoretical and scientific support. They play a greater role in take of decisions within an institution. This tool simplifies the evaluation and comparison between different projects, allowing the best choice to satisfy the interests of business. BiodieselFAO software supports the take of decision in projects of oil or biodiesel production. Take into account economic, financial and social variables, as well as it allows assessing the project from an agricultural and industrial viewpoint. To validate the BiodieselFAO software in Chile it is necessary to test how it responds to a test case carried out in the country. For this purpose, the Assessment of the Biofuels Potential Production in Chile with Traditional Agricultural Crops report (EBPCh) was chosen, made by the Technical University Federico Santa María (UTFSM). In this report the production of biodiesel from rapeseed and sunflower seeds was evaluated, determining the economic viability of their production. The cash flows of the industrial biodiesel production obtained with the software BiodieselFAO and those obtained with UTFSM were compared statistically. The net present value (VANs) was also compared for all economic analysis performed. It is concluded that BiodieselFAO software cannot be validated, based on the significant differences (p>0.05) from the VAN obtained with the BiodieselFAO y those obtained with UTFSM. The cash flows obtained by the BiodieselFAO software doesn’t consider the salvage value of investments, therefore, the VAN and internal rate of return (TIR) are undervalued compared with those obtained by the UTFSM, this may be misleading to decision makers. Finally, it is concluded that isn’t advisable to use the BiodieselFAO software until these problems encountered are resolved....
Systems to support decision making, are tools which identify and measure risks with theoretical and scientific support. They play a greater role in take of decisions within an institution. This tool simplifies the evaluation and comparison between different projects, allowing the best choice to satisfy the interests of business. BiodieselFAO software supports the take of decision in projects of oil or biodiesel production. Take into account economic, financial and social variables, as well as it allows assessing the project from an agricultural and industrial viewpoint. To validate the BiodieselFAO software in Chile it is necessary to test how it responds to a test case carried out in the country. For this purpose, the Assessment of the Biofuels Potential Production in Chile with Traditional Agricultural Crops report (EBPCh) was chosen, made by the Technical University Federico Santa María (UTFSM). In this report the production of biodiesel from rapeseed and sunflower seeds was evaluated, determining the economic viability of their production. The cash flows of the industrial biodiesel production obtained with the software BiodieselFAO and those obtained with UTFSM were compared statistically. The net present value (VANs) was also compared for all economic analysis performed. It is concluded that BiodieselFAO software cannot be validated, based on the significant differences (p>0.05) from the VAN obtained with the BiodieselFAO y those obtained with UTFSM. The cash flows obtained by the BiodieselFAO software doesn’t consider the salvage value of investments, therefore, the VAN and internal rate of return (TIR) are undervalued compared with those obtained by the UTFSM, this may be misleading to decision makers. Finally, it is concluded that isn’t advisable to use the BiodieselFAO software until these problems encountered are resolved....
Los complejos metamórficos paleozoicos de la Cordillera de Vallenar: implicancias en la evolución tectónica del margen occidental de Gondwana
(Universidad de Chile, 2015)
La evolución geológica del margen occidental de América del Sur es el resultado de procesos tectónicos como subducción de corteza oceánica, magmatismo, acreción, rifting y colisiones continentales. Para comprender esta compleja historia evolutiva es...
Música para un Valparaíso mutante : composición inspirada en el espíritu intercultural de Valparaíso, para gran ensamble híbrido
(Universidad de Chile, 2019)
Este documento corresponde a mi proyecto de tesis junto a la composición musical que da cuenta de la investigación hecha entre el 2017 y 2018 para optar al grado de Magíster en Artes con mención en Composición Musical, perteneciente al programa de...
Plan de negocios para expansión de Pizzería dentro de la Provincia de Marga Marga, Región de Valparaíso
(Universidad de Chile, 2019)
calidad de los ingredientes ofrecidos y la masa fresca y a la piedra que es entregada en todas sus pizzas. Si bien este nivel de ventas ha permitido el correcto el funcionamiento de la pizzería por 16 años, se buscará aumentar los niveles de venta dentro...
El actor cruza las puertas del teatro: hacia una reinscripción de la dimensión ritual en la creación teatral
(Universidad de Chile, 2012)
1
UNIVERSIDAD DE CHILE
FACULTAD DE FILOSOFÍA Y HUMANIDADES
DEPARTAMENTO DE CIENCIAS HISTÓRICAS
EL ACTOR CRUZA LAS PUERTAS DEL TEATRO
Hacia una reinscripción de la dimensión ritual en la...
creación teatral Tesis para optar al título de licenciatura en Historia VICENTA PESUTIC GARCÍA PROFESOR LUIS BAHAMONDES 12 de Diciembre de 2012 2 A mi madre y a mi padre, por esta aventura que, como dijera alguien una...
creación teatral Tesis para optar al título de licenciatura en Historia VICENTA PESUTIC GARCÍA PROFESOR LUIS BAHAMONDES 12 de Diciembre de 2012 2 A mi madre y a mi padre, por esta aventura que, como dijera alguien una...
El dilema de la Lapageria Rosea en bosques fragmentados : ¿cantidad o calidad de la progenie?
(Universidad de Chile, 2002)
La fragmentación del hábitat puede afectar a las plantas al modificar su éxito reproductivo. Poblaciones más pequeñas y aisladas podrían experimentar reducción en la cantidad y calidad de semillas producidas, por cambios en la interacción con...
Habitat fragmentation can affect reproductive success in plants. Smaller and more isolated populations can reduce the quantity and quality of the produced seeds, because changes in plant-pollinators interaction, reduction in plant population genetic variability and abiotic changes. Since seed germination and seedling establishment, depend on the quantity and quality of the produced seeds, and on abiotic conditions, long term population survival in forest fragments might be compromised. The general objective of this thesis is to study the effects of habitat fragmentation on the quantity and quality of the produced progeny among Lapageria rosea (R. et P., Philesiaceae). Here it is emphasized processes related to regeneration, such as pollination, seed production and seed mortality, germination and seedling establishment. Fragmented forest and a continuous forest in central Chile, are here compared. Habitat fragmentation induces environmental modifications, besides a reduction in plant population genetic variability and reproductive success in L. rosea. The reduction of pollinators in fragments and the reduction in the quality of the pollen produced, favors the reduction in the amount of seeds produced. Also, the increase in inbreeding generated a reduction in the quality of the seeds produced in fragments. However, the lower quality of the seeds produced is not translated on a reduction in seed germination or seedling established among fragments. Differences between fragments and continuous forest are more associated to demographic factors. This thesis emphasized the importance of mutualistic relationships, demographic factors, and aspect related to the biology of each species, on the responses against habitat fragmentation....
Habitat fragmentation can affect reproductive success in plants. Smaller and more isolated populations can reduce the quantity and quality of the produced seeds, because changes in plant-pollinators interaction, reduction in plant population genetic variability and abiotic changes. Since seed germination and seedling establishment, depend on the quantity and quality of the produced seeds, and on abiotic conditions, long term population survival in forest fragments might be compromised. The general objective of this thesis is to study the effects of habitat fragmentation on the quantity and quality of the produced progeny among Lapageria rosea (R. et P., Philesiaceae). Here it is emphasized processes related to regeneration, such as pollination, seed production and seed mortality, germination and seedling establishment. Fragmented forest and a continuous forest in central Chile, are here compared. Habitat fragmentation induces environmental modifications, besides a reduction in plant population genetic variability and reproductive success in L. rosea. The reduction of pollinators in fragments and the reduction in the quality of the pollen produced, favors the reduction in the amount of seeds produced. Also, the increase in inbreeding generated a reduction in the quality of the seeds produced in fragments. However, the lower quality of the seeds produced is not translated on a reduction in seed germination or seedling established among fragments. Differences between fragments and continuous forest are more associated to demographic factors. This thesis emphasized the importance of mutualistic relationships, demographic factors, and aspect related to the biology of each species, on the responses against habitat fragmentation....