The aim of the present study is to analyze the conception of time in six books of poems by José Hierro (1922-2002): Tierra sin nosotros (1947), Alegría (1947), Con las piedras, con el viento… (1950), Quinta del 42 (1952), Cuanto sé de mí (1957) and Libro de las alucinaciones (1964). It is suggested that the theme of time in Hierro´s poetry can be approached from three different points of view: existence, essence and consciousness. Furthermore, these three different perspectives are reflected in a chronological division of Hierro´s books of poems into three periods: existential poetry, intimist poetry and hallucinatory poetry. In order to develop and reinforce the thematic study, on the one hand, a comparative study is carried out that focuses on the relationship between poetry and philosophy, and, on the other, the thematic configuration on the surface level is considered. The methodological foundations that make it possible to achieve this objective are provided by Jean-Pierre Richard´s thematic criticism, Edmund Husserl´s phenomenology and Paul Ricoeur´s phenomenological hermeneutics. The dissertation concludes that Tierra sin nosotros and Alegría represent Hierro´s existential poetry, written during the post-war period and the reigning atmosphere of existentialism. Alegría, Con las piedras, con el viento… and Quinta del 42 constitute his intimist poetry. The second book, Alegría, is described as a “bridging book” between the first two periods. When the immediacy of the Civil War begins to fade, the literary scene shifts towards the more intimate theme of knowledge, and in Hierro´s poetry especially the phenomenon of time. In Quinta del 42, Cuanto sé de mí and Libro de las alucinaciones the reader encounters Hierro´s hallucinatory poetry. Quinta del 42 is another example of a “bridging book” between two periods. His hallucinatory poems transmit an extreme form of the search for inner truth which entails the deconstruction of time and space.

Sammanfattning Både grundskolans och gymnasieskolans kursplaner i Idrott och hälsa, framhäver friluftsliv som ett obligatoriskt moment i undervisningen. Samtidigt visar forskning att det bedrivs relativt lite friluftsliv i de svenska skolorna. Syftet med studien har därför varit, att utifrån de uppfattningar lärarna har om friluftsverksamheten i skolan, utveckla en djupare förståelse för betydelsen av friluftsliv och därmed skapa bättre förutsättningar i friluftsliv för dagens elever. Genom kvalitativa intervjuer med tre verksamma lärare, en idrottslärarutbildare samt en före detta idrottslärare, har jag kommit fram till flera värdefulla resultat. De viktigaste förutsättningarna för friluftslivets existens i skolan, är att den aktuella läraren har ett intresse för att driva en friluftsverksamhet, att det finns ett samarbete med andra lärare och att ledningen driver mot samma håll. Friluftslivets syfte kan beskrivas som att sätta in kunskap i ett större sammanhang. Friluftslivet kan också ses som en arbetsmetod för att nå mål som faller inom hela skolans verksamhet. Det kan t.ex. gälla den sociala eller den personliga utvecklingen hos individen. / Abstract The sport curriculum of the compulsory school as well as that of the upper secondary school emphasise outdoor education as an obligatory part of the education. At the same time research shows that a relatively low quantity of outdoor education is being carried out in Swedish schools. The aim of the study was therefore, according to the perceptions teachers have about outdoor education in school, develop a deeper understanding of the importance of outdoor education and hence create better conditions for outdoor education to today’s students. Through qualitative interviews with one former and three active teachers, and one teacher working with education of sport teachers, I have come to more than a few valuable conclusions. The most important conditions for the existence of outdoor education at school, is the teacher’s interest in carrying out outdoor education, the collaboration with other teachers and the directors wanting to achieve the same purpose. The aim of outdoor education can be described as putting knowledge in a bigger framework. Outdoor education can be seen as a method to achieve objectives the entire school is striving to reach. Such objectives are e.g. the personal or social development of an individual.

Simultaneous operation of different wireless applications in the same geographical region and the same frequency band gives rise to undesired interference issues. Since licensed (primary) applications have been granted priority access to the frequency spectrum, unlicensed (secondary) services should avoid imposing interference on the primary system. In other words, secondary system’s activity in the same bands should be in a controlled fashion so that the primary system maintains its quality of service (QoS) requirements. In this thesis, we consider collocated point-to-multipoint primary and secondary networks that have simultaneous access to the same frequency band. Particularly, we examine three different levels at which the two networks may coexist: pure interference, asymmetric co-existence, and symmetric co-existence levels. At the pure interference level, both networks operate simultaneously regardless of their interference to each other. At the other two levels, at least one of the networks attempts to mitigate its interference to the other network by deactivating some of its users. Specifically, at the asymmetric co-existence level, the secondary network selectively deactivates its users based on knowledge of the interference and channel gains, whereas at the symmetric level, the primary network also schedules its users in the same way. Our aim is to derive optimal sum-rates (i.e., throughputs) of both networks at each co-existence level as the number of users grows asymptotically and evaluate how the sum-rates scale with the network size. In order to find the asymptotic throughput results, we derive two propositions; one on the asymptotic behaviour of the largest order statistic and one on the asymptotic behaviour of the sum of lower order statistics. As a baseline comparison, we calculate primary and secondary sum-rates for the time division (TD) channel sharing. Then, we compare the asymptotic secondary sum-rate in TD to that under simultaneous channel sharing, while ensuring the primary network maintains the same sum-rate in both cases. Our results indicate that simultaneous channel sharing at both asymmetric and symmetric co-existence levels can outperform TD. Furthermore, this enhancement is achievable when user scheduling in uplink mode is based only on the interference gains to the opposite network and not on a network’s own channel gains. In other words, the optimal secondary sum-rate is achievable by applying a scheduling strategy, referred to as the least interference strategy, for which only the knowledge of interference gains is required and can be performed in a distributed way.

William James denies consciousness as an entity and this rejection lies in the background of my thesis. I searched the main reasons for this rejection in his philosophy. Throughout this search, I perceived two modes of existence of consciousness, that is active and passive. As James improves his thoughts on consciousness over the main arguments of classical empiricists, I explained his radical empiricism and pragmatism in relation to them. It is difficult to answer whether we are completely active or passive in the ways of our thinking and behaving. However, although it includes some problems and inconsistencies, James&rsquo / s philosophy presents a more plausible explanation of our thinking than rationalism and empiricism, since it can appreciate the changes of our life in an unfinished world of pure experience. Therefore, my inquiry into the existence of consciousness in James depends on this plausibility of the main characteristics of radical empiricism in connection with the classical empiricists.

Cette thèse porte sur l'étude des ondes stationnaires d'équations dispersives non linéaires, en particulier l'équation de Schrödinger, mais aussi celle de Klein-Gordon. Les travaux présentés s'articulent autour de deux questions principales : l'existence et la stabilité orbitale de ces ondes stationnaires. <br /><br />L'existence est étudiée par des méthodes essentiellement variationnelles. En plus de la simple existence, on met en évidence différentes caractérisations variationnelles des ondes stationnaires, par exemple en tant que points critiques d'une certaine fonctionnelle au niveau du col ou au niveau de moindre énergie, ou encore en tant que minimiseurs d'une fonctionnelle sur différentes contraintes.<br /><br />Selon la puissance de la non-linéarité et la forme de la dépendance en espace, on démontre que les ondes stationnaires sont stables ou instables. Lorsqu'elles sont instables, on met en évidence que dans certaines situations l'instabilité se manifeste par explosion, tandis que dans d'autres les solutions sont globalement bien posées. En plus des différentes caractérisations variationnelles des <br />ondes stationnaires, les preuves des résultats de stabilité et d'instabilité nécessitent de dériver des informations de nature spectrale. En particulier, dans la première partie de cette thèse, on prouve un résultat de non-dégénérescence du linéarisé pour un problème limite. Dans la deuxième partie, on localise la deuxième valeur propre du linéarisé par la combinaison d'une méthode perturbative et d'arguments de continuation.

Ce mémoire de thèse porte sur les ondes progressives pour l'équation de Gross-Pitaevskii, et les ondes solitaires pour les équations de Kadomtsev-Petviashvili.<br /><br />L'équation de Gross-Pitaevskii est un modèle pour l'analyse des condensats de Bose-Einstein, de la supraconductivité, de la superfluidité ou de l'optique non linéaire. Les équations de Kadomtsev-Petviashvili décrivent l'évolution d'ondes dispersives, faiblement non linéaires, et des ondes sonores dans les matériaux anti-ferromagnétiques.<br /><br />On s'intéresse ici aux propriétés d'existence et au comportement asymptotique de ces ondes. On montre la non-existence des ondes progressives supersoniques, non constantes, d'énergie finie, pour<br />l'équation de Gross-Pitaevskii en dimension supérieure ou égale à deux, puis celle des ondes progressives soniques, non constantes, d'énergie finie, en dimension deux. On décrit ensuite le comportement asymptotique des ondes progressives subsoniques, d'énergie finie, pour l'équation de Gross-Pitaevskii, puis celui des ondes solitaires pour les équations de Kadomtsev-Petviashvili en dimension supérieure ou égale à deux.

Since the Open-Door Policy has been carried out in 1979, China has gained dramatic improvements in many fields, such as economies and military. At the same time, the considerable changes also bring China many crises from the complicated international envirorunent. This thesis will illustrate these questions through nationalism and realism theoretical framework by using case study with a qualitative approach as the method. With the Five Peaceful Principles of Co-existence based foreign policy, this thesis will experience "Century of Humiliation" of China again and redefine the rising power of China through a case study about Diaoyu/Senkaku Islands dispute between China and Japan. Although it is a little hard to analyze this case under a complicated international environment, plenty of document information will support to get a result of how China's foreign policy and national security are interlinked? Finally, "national insecurities" and "humiliating history" are drawn as the key factors that affect China's foreign policy making, and the interconnections of China's peaceful diplomacy and national security. "National insecurities" and "humiliating history" drive China to make the foreign policy of peaceful development, otherwise, to ensure national security, China need to strengthen the comprehensive national power.

Simultaneous operation of different wireless applications in the same geographical region and the same frequency band gives rise to undesired interference issues. Since licensed (primary) applications have been granted priority access to the frequency spectrum, unlicensed (secondary) services should avoid imposing interference on the primary system. In other words, secondary system’s activity in the same bands should be in a controlled fashion so that the primary system maintains its quality of service (QoS) requirements. In this thesis, we consider collocated point-to-multipoint primary and secondary networks that have simultaneous access to the same frequency band. Particularly, we examine three different levels at which the two networks may coexist: pure interference, asymmetric co-existence, and symmetric co-existence levels. At the pure interference level, both networks operate simultaneously regardless of their interference to each other. At the other two levels, at least one of the networks attempts to mitigate its interference to the other network by deactivating some of its users. Specifically, at the asymmetric co-existence level, the secondary network selectively deactivates its users based on knowledge of the interference and channel gains, whereas at the symmetric level, the primary network also schedules its users in the same way. Our aim is to derive optimal sum-rates (i.e., throughputs) of both networks at each co-existence level as the number of users grows asymptotically and evaluate how the sum-rates scale with the network size. In order to find the asymptotic throughput results, we derive two propositions; one on the asymptotic behaviour of the largest order statistic and one on the asymptotic behaviour of the sum of lower order statistics. As a baseline comparison, we calculate primary and secondary sum-rates for the time division (TD) channel sharing. Then, we compare the asymptotic secondary sum-rate in TD to that under simultaneous channel sharing, while ensuring the primary network maintains the same sum-rate in both cases. Our results indicate that simultaneous channel sharing at both asymmetric and symmetric co-existence levels can outperform TD. Furthermore, this enhancement is achievable when user scheduling in uplink mode is based only on the interference gains to the opposite network and not on a network’s own channel gains. In other words, the optimal secondary sum-rate is achievable by applying a scheduling strategy, referred to as the least interference strategy, for which only the knowledge of interference gains is required and can be performed in a distributed way.

Abstract The negative impact of invasive plant species on biodiversity and ecosystem functions, such as productivity and nutrient cycling has been deemed a global epidemic. To address this worldwide concern, information is needed on how the invasion process happens and how to control an existing invasion. The main aim of the research presented in this thesis was to develop a better understanding of the interacting role different mechanisms play in facilitating invasion and then link this understanding to the design of more effective control strategies. This aim is significant because traditional weed control strategies are not working. The estimated cost of controlling weeds in Australia is $1.4 billion per year in agricultural landscapes. Despite this substantial investment, invasive weed species are estimated to continue to cost the agricultural industry $2.2 billion per year in loss of yield. Current control strategies tend to focus on killing or removing an invasive plant species directly with the application of herbicides and/or mechanical removal. These strategies have proven ineffectual because the plant communities that assemble after management often remain dominated by the same invader or another. In this thesis, I use a combination of empirical and modelling techniques to investigate how disturbance regimes and competitive interactions between invasive plants and native plants can be manipulated to improve the efficacy of restoration efforts. To do this, I use the model scenario of the invasion of Eragrostis curvula (African lovegrass), an invasive grass species introduced into Australia in the early 1900s from South Africa. This species has now spread into every Australian state and territory (chapter 2). I specifically focus on two mechanisms: (1) disturbance, i.e. cattle grazing, and (2) competitive interactions. In chapter 3, I examine connections between dominance and competitive differences among African lovegrass and several functionally similar native grass species in a pasture community. To test the displacement hypothesis, I used a glasshouse competition trial to investigate interactions between African lovegrass and two non-persisting native grass species (Themeda australis and Bothriochloa decipiens) with manipulations of resources, neighbour density, and establishment order. To test the partitioning hypothesis, I compared in situ water use patterns among African lovegrass and two coexisting native grass species (Aristida calycina and Aristida personata) based on the assumption that water is the most limiting resource in this system. The key finding of this chapter is that competition can have important, but contingent, impacts on dominance. Competitive differences appear to partially contribute to abundance patterns after establishment, but may be relatively unimportant during the establishment phase where disturbance appears more critical. In chapter 4, I provide evidence that the identification of mechanisms that led to an invasion, while crucial for the development of effective preventative measures and understanding the invasion process, may not be necessary for the design of more effective control strategies. To examine the effects of different control strategies on African lovegrass and the resultant community, I established a large factorial field-trial with a split-plot design. I manipulated grazing, soil nutrient levels and the presence of the invader. The most common control strategy (removing the causal disturbance and killing the invasive grass), based implicitly on traditional equilibrium models, was not an effective option for restoring a desirable native community. Instead, this strategy led to the dominance of a secondary invader. The most effective control strategy was based on alternative stable states models and involved maintaining grazing, and increasing the palatability of the invader with fertilizers. The key finding of this chapter is that novel approaches for control, which consider the dynamics of the invader-dominated system, are needed. In chapter 5, I investigate the benefits of explicitly incorporating actions that manipulate disturbance (natural or imposed) into control efforts. To do this, I first developed a process model that described the dynamics of an invader whose establishment is preferentially favoured by disturbance. I then couched this model in a decision theory framework, a stochastic dynamic program, and applied a case-study of another invasive plant species, Mimosa pigra (a perennial legume shrub and pan-tropical weed). The key finding of this chapter is that strategies should not only focus on existing invader-dominated sites, but should also protect sites occupied by native species from disturbances that facilitate invasion. The research discussed in this thesis makes three key contributions to a better understanding of the invasion process and the design of more effective control strategies: 1) the search for one key mechanism is not sufficient because multiple mechanisms can interact or shift in importance to facilitate different stages of invasion, 2) a novel approach is needed to restore a more desirable native community because the dynamics of the invader-dominated system can differ from the historical native community, and 3) control efforts should be broadened in focus to include protection of the integrity of native communities from disturbances that facilitate invasion.

William James denies consciousness as an entity and this rejection lies in the background of my thesis. I searched the main reasons for this rejection in his philosophy. Throughout this search, I perceived two modes of existence of consciousness, that active and passive. As James improves his thoughts on consciousness over the main arguments of classical empiricists, I explained his radical empiricism and pragmatism in relation to them. It is difficult to answer whether we are completely active or passive in the ways of our thinking and behaving. However, although it includes some problems and inconsistencies, James&amp / #8217 / s philosophy presents a more plausible explanation of our thinking than rationalism and empiricism, since it can appreciate the changes of our life in an unfinished world of pure experience. Therefore, my inquiry into the existence of consciousness in James depends on this plausibility of the main characteristics of radical empiricism in connection with the classical empiricists.