Le concept d'Umwelt de Jakob von Uexküll considère les animaux comme des sujets qui habitent leur propre univers subjectif qui est déterminé par la perception sensorielle de l'animal et ses capacités cognitives. Le dauphin apparait être une espèce intéressante pour étudier l'Umwelt, car les cétacés ont subi un changement radical de mode de vie au cours de l'évolution. Ces mammifères sont passés d'une vie terrestre à une vie aquatique. Bien que les grands dauphins soient intensivement étudiés, des recherches sur leur perception sensorielle sont encore nécessaires. Ici, nous avons étudié certains aspects de l'Umwelt des dauphins en nous interrogeant sur: (1) l'organisation de leur Umwelt acoustique nocturne ; (2) ce que la production de copies vocales par les dauphins peut nous dire sur leur perception de leur environnement ; (3) s'ils sont capables de percevoir des goûts (4) ou des odeurs ; (5) s'ils sont sensibles aux stimuli magnétiques. Nous avons constaté que l'Umwelt nocturne des dauphins a été caractérisé par une activité vocale avec des patterns temporels qui comprenaient également des copies vocales des sons que les dauphins avaient entendus au cours de la journée. Il s'agit d'une nette séparation entre la formation de la mémoire auditive et la production de copies vocales. Les copies pourraient être des répétitions nocturnes vocalement exprimées des événements de la journée. Ainsi, les vocalisations peuvent servir d'indicateurs d'événements ou d'objets qui ont un sens pour les dauphins. En ce qui concerne les capacités perceptives des dauphins, nous avons constaté qu'ils étaient sensibles aux stimuli liés à l'alimentation à la fois sur les plans gustatif et olfactif. Ils peuvent utiliser cette capacité pour localiser et / ou évaluer la nature de leur proie. En outre, les dauphins ont répondu à un stimulus magnétique, ce qui suggère qu'ils sont magnétosensibles, cela pourrait être utile pour la navigation. Jusqu'à présent, la chimio- et la magnétoréception n'ont pas été considérées sérieusement comme potentiellement fonctionnelles chez les dauphins. Les résultats obtenus au cours de cette thèse ont permis de combler certaines des lacunes qui subsistaient dans la connaissance de l'Umwelt du dauphin et contribuent ainsi à une meilleure compréhension de cette espèce. En outre, ils montrent que des aspects importants de la biologie d'espèces pourtant intensivement étudiées peuvent être encore méconnus. Cela nous rappelle l'importance de garder une grande ouverture d'esprit lorsque l'on étudie un sujet. / The Umwelt concept of Jakob von Uexküll considers animals as subjects that inhabit their own subjective universe which is determined by the animal’s sensory perception and cognitive abilities. Dolphins present an interesting species to investigate its Umwelt because cetaceans underwent a drastic change in lifestyle in the course of evolution because these mammals returned from a terrestrial life back into the water. Although bottlenose dolphins are intensively studied there are still many knowledge gaps. Here we studied some aspects of the dolphins’ Umwelt by asking: (1) how their nocturnal acoustic Umwelt is arranged; (2) what the production of vocal copies can tell us about the dolphins’ perception of their environment; (3) whether they are able to perceive tastes (4) or odours; (5) whether they are sensitive to magnetic stimuli. We found that the dolphins’ nocturnal Umwelt was characterized by a temporally patterned vocal activity that also included vocal copies of sounds that the dolphins had heard during the day. This is a striking separation between auditory memory formation and vocal copy production and the copies might be a vocally expressed nocturnal rehearsal of day events. Thus, vocalizations can serve as possible indicators of events or objects that are meaningful to the dolphins. Regarding dolphins’ perceptive abilities, we found that they were sensitive to both gustatory and olfactory food-related stimuli. They might use this ability to locate and/or evaluate prey. Further, dolphins responded to a magnetic stimulus, suggesting that they are magnetosensitive, what could be useful for navigation. So far, chemo- and magnetoreception have not been considered seriously as potentially functional in dolphins. The results obtained during this thesis fill some of the gaps that still exist in the knowledge of the dolphin’s Umwelt and therefore contribute to a better understanding of this species. Moreover, they illustrate that even already intensively studied species may still hold important facets of their biology to reveal and that research should broaden the view and remain unbiased when studying a topic.

Rural-urban migration has been increasing and is commonly seen in northern cities of Mexico.  Indigenous students do not always have opportunities to receive higher education in their communities, and therefore migrate to urban areas. After migrating they can face certain challenges navigating the urban lifestyle. With the help of the translocality concept, this study employed a questionnaire and semi-structured interviews to explore the reason behind five indigenous students' migration and their experiences of different translocal circumstances. The results and analysis indicated that the students had both similar and different experiences in the various translocal arenas. The analysis showed the reasons behind the students’ migration were often linked to educational opportunities, but they also expressed different aspirations and plans for the future Further, adjusting to their new city environment proved to be challenging. They experienced both a negative and positive sense of place in Monterrey, but Mision del Nayar, the university and other indigenous students helped them feel a sense of belonging. The experiences the students had in the different translocal arenas shaped their narrative, and hence, impacted their sense of place and sense of belonging. Lastly, the students experienced translocal identities on a daily basis. / Migration från landsbygd till städer har ökat och har blivit vanligare i norra städer i Mexiko. Studenter från ursprungsbefolkningar har inte alltid tillgång till högre utbildning i sina samhällen och migrerar därför till stadsområden. Efter migrationen kan de genomgå vissa utmaningar med att navigera sig i den urbana livsstilen. Med hjälp av translokalitetskonceptet tillämpade denna studie ett frågeformulär och semistrukturerade intervjuer för att undersöka orsakerna till fem inhemska studenters migration och deras erfarenheter av olika translokala omständigheter. Resultatet och analysen tydde på att studenterna hade både liknande och olika upplevelser i de olika translokala arenorna. Analysen visade att anledningarna till studenternas migration ofta var kopplade till utbildningsmöjligheter, men de uttryckte också olika ambitioner och planer inför framtiden. Vidare visade sig anpassningen till deras nya stadsmiljö vara utmanande. De upplevde både en negativ och positiv känsla av plats i Monterrey, men Mision del Nayar, universitetet och andra inhemska studenter hjälpte dem också att känna tillhörighet. De erfarenheter som studenterna hade av de olika translokala arenorna formade deras berättelse och påverkade därmed deras känsla av plats och känsla av tillhörighet. Avslutningsvis påvisade studien att studenterna dagligen upplevde translokala identiteter.

Title: Silently listen to one's own being: Relationship of bodily sensations and sense in the early philosophy of M. Heidegger Author: Bc. Filip Žitník Department: Department of general anthropology, FHS - UK Supervisor: Mgr. Ing. arch. Marie Pětová, Ph.D. Abstract: Master thesis Silently listen to one's own being: Relationship of bodily sensations and sense in the early philosophy of M. Heidegger deals with the question of possibility of discussing the motive of body and bodily sensations within the framework of M. Heidegger's fundamental ontology and finding a relationship between bodily sensations and sense within this conception. The first part of the thesis demonstrates through the exposition of worldhood as the existential trait of Dasein that Dasein as ,being in the world' is necessarily bodily being, otherwise the world which is the whole of references would disintegrate. The second part reveals the necessity to conceive the bodily sensations in relation to state-of-mind (Befindlichkheit) as a fundamental trait of this being and not as the mere concomitant phenomenon. Thus the bodily sensation is via state-of-mind (Befindlichkheit) co-constitutive trait of original phenomenon "there" which is in its nature a temporal unity of the traits state-of mind, speech and understanding. In this way the bodily...

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Syftet med denna studie är att undersöka och analysera hur genomförandet av matematikundervisning kring grundläggande taluppfattning går till i årskurserna F-3. Detta utifrån studiens teoretiska ramverk, Foundational number sense (FoNS): Åtta nyckelkomponenter. Metoderna som används är enkätundersökning och semistrukturerade intervjuer. Resultatet från studien visar att flera nyckelkomponenter inkluderas i matematikundervisningen i F-3, men i varierande utsträckning. Vissa nyckelkomponenter är mindre förekommande än andra, och dessa kan knytas an till de utmaningar som uppstår under matematikundervisningen. För att förbättra elevers förståelse av grundläggande taluppfattning är en slutsats att det krävs en ökad inkludering av de olika nyckelkomponenterna i matematikundervisningen, då de spelar olika aspekter av grundläggande taluppfattning. Elevers svårigheter med en specifik nyckelkomponent kan kompenseras genom att fokusera mer på en annan, vilket möjliggör en mer helhetsförståelse av ämnet. / The purpose of this study is to investigate and analyze the implementation of mathematics education concerning basic numerical understanding in grades F-3, based on the study's theoretical framework, Foundational number sense (FoNS): Eight Key Components. The methods used include surveys and semi-structured interviews. The results of the study show that several key components are included in mathematics education in F-3, but to varying extents. Some key components are less prevalent than others, and these can be linked to the challenges that arise during mathematics education. To improve students' understanding of basic numerical understanding numeracy, a conclusion is that there needs to be increased inclusion of the various key components in mathematics education, as they represent different aspects of basic numeracy. Students' difficulties with a specific key component can be compensated for by focusing more on another, enabling a more holistic understanding of the subject.

The purpose of this exploratory study was to investigate graduate student perceptions of community and connectedness enrolled in an online doctoral program at a Texas university. This research is relevant to students enrolled at the University of North Texas in the learning technologies (LTEC) PhD program. The aim was to identify elements that facilitate community and connectedness among residential and distributed students. The study utilized a mixed method approach employing the Brief Sense of Community Survey (BSCS) and the Online Student Connectedness Survey (OSCS) for the quantitative data along with semi-structured interviews for qualitative analysis. Survey data was collected from twenty-nine residential and distributed students ranging from first year to dissertation stage. Semi-structure interviews were conducted from five student volunteers to further identify participants' perception of community and connectedness within the program. Results reveal that while current features of community designed within the program (i.e. annual meeting, associate graduate faculty support, and cohort model) are beneficial in helping students develop a sense of community and sense of connectedness. However, students desire deeper connections with peers, faculty and the program at various phases of the doctoral process. Doctoral support during the dissertation phase, additional student support such as alumni and current student mentoring and the development of an online community emerged as beneficial in further creating community and connectedness among students in the program.

Odour plays an important role in many predator/prey interactions. In the northern hemisphere, many mammalian prey species have been shown to respond to predator odours. It is also widely assumed that mammalian predators utilise odours to locate their prey. This thesis explores the importance of odour in Australian mammalian predator/prey interactions. Responses of native Australian species to the faecal odour of two predators; the native tiger quoll Dasyurus maculatus and the introduced red fox Vulpes vulpes, were evaluated through live-trapping and focussed behavioural studies of captive animals. Tiger quoll responses to prey olfactory cues were investigated in a captive experiment. Native rodents (bush rats Rattus fuscipes, swamp rats R. lutreolus and eastern chestnut mice Pseudomys gracilicaudatus) equally avoided traps scented with either quoll or fox faeces, and in captive experiments, bush rats and swamp rats reduced their average speed in response to both predator odours. Of the marsupial species, northern brown bandicoots Isoodon macrourus and common brushtail possums Trichosurus vulpecula were captured more frequently in quoll-scented traps than unscented traps or foxscented traps, while captures of brown antechinus Antechinus stuarttii, long-nosed bandicoots Perameles nasuta and southern brown bandicoot I. obesulus were unaffected by the either predator odour. In captive experiments, brown antechinus, long-nosed and northern brown bandicoots decreased their foraging in response to both predator odours, and spent less time in areas scented with quoll faeces. Tiger quolls didn't appear to detect odour sources from a distance of >65 cm, but they did follow scent trails and spent more time in areas scented with the urine and faeces of potential prey. Chemical analysis revealed no common components in fox and quoll odour which prey species could be responding to. Therefore, these native species have evolved to respond to fox odour since foxes were introduced to Australia 130 years ago. The stronger response of native rodents to fox odour may be a legacy of their co-evolution with canid predators prior to entering Australia. A better understanding of how odour is utilised in Australian predator/prey interactions may lead to a greater ability to protect Australia's unique mammalian fauna from introduced predators.

Odour plays an important role in many predator/prey interactions. In the northern hemisphere, many mammalian prey species have been shown to respond to predator odours. It is also widely assumed that mammalian predators utilise odours to locate their prey. This thesis explores the importance of odour in Australian mammalian predator/prey interactions. Responses of native Australian species to the faecal odour of two predators; the native tiger quoll Dasyurus maculatus and the introduced red fox Vulpes vulpes, were evaluated through live-trapping and focussed behavioural studies of captive animals. Tiger quoll responses to prey olfactory cues were investigated in a captive experiment. Native rodents (bush rats Rattus fuscipes, swamp rats R. lutreolus and eastern chestnut mice Pseudomys gracilicaudatus) equally avoided traps scented with either quoll or fox faeces, and in captive experiments, bush rats and swamp rats reduced their average speed in response to both predator odours. Of the marsupial species, northern brown bandicoots Isoodon macrourus and common brushtail possums Trichosurus vulpecula were captured more frequently in quoll-scented traps than unscented traps or foxscented traps, while captures of brown antechinus Antechinus stuarttii, long-nosed bandicoots Perameles nasuta and southern brown bandicoot I. obesulus were unaffected by the either predator odour. In captive experiments, brown antechinus, long-nosed and northern brown bandicoots decreased their foraging in response to both predator odours, and spent less time in areas scented with quoll faeces. Tiger quolls didn't appear to detect odour sources from a distance of >65 cm, but they did follow scent trails and spent more time in areas scented with the urine and faeces of potential prey. Chemical analysis revealed no common components in fox and quoll odour which prey species could be responding to. Therefore, these native species have evolved to respond to fox odour since foxes were introduced to Australia 130 years ago. The stronger response of native rodents to fox odour may be a legacy of their co-evolution with canid predators prior to entering Australia. A better understanding of how odour is utilised in Australian predator/prey interactions may lead to a greater ability to protect Australia's unique mammalian fauna from introduced predators.

Odour plays an important role in many predator/prey interactions. In the northern hemisphere, many mammalian prey species have been shown to respond to predator odours. It is also widely assumed that mammalian predators utilise odours to locate their prey. This thesis explores the importance of odour in Australian mammalian predator/prey interactions. Responses of native Australian species to the faecal odour of two predators; the native tiger quoll Dasyurus maculatus and the introduced red fox Vulpes vulpes, were evaluated through live-trapping and focussed behavioural studies of captive animals. Tiger quoll responses to prey olfactory cues were investigated in a captive experiment. Native rodents (bush rats Rattus fuscipes, swamp rats R. lutreolus and eastern chestnut mice Pseudomys gracilicaudatus) equally avoided traps scented with either quoll or fox faeces, and in captive experiments, bush rats and swamp rats reduced their average speed in response to both predator odours. Of the marsupial species, northern brown bandicoots Isoodon macrourus and common brushtail possums Trichosurus vulpecula were captured more frequently in quoll-scented traps than unscented traps or foxscented traps, while captures of brown antechinus Antechinus stuarttii, long-nosed bandicoots Perameles nasuta and southern brown bandicoot I. obesulus were unaffected by the either predator odour. In captive experiments, brown antechinus, long-nosed and northern brown bandicoots decreased their foraging in response to both predator odours, and spent less time in areas scented with quoll faeces. Tiger quolls didn't appear to detect odour sources from a distance of >65 cm, but they did follow scent trails and spent more time in areas scented with the urine and faeces of potential prey. Chemical analysis revealed no common components in fox and quoll odour which prey species could be responding to. Therefore, these native species have evolved to respond to fox odour since foxes were introduced to Australia 130 years ago. The stronger response of native rodents to fox odour may be a legacy of their co-evolution with canid predators prior to entering Australia. A better understanding of how odour is utilised in Australian predator/prey interactions may lead to a greater ability to protect Australia's unique mammalian fauna from introduced predators.

Odour plays an important role in many predator/prey interactions. In the northern hemisphere, many mammalian prey species have been shown to respond to predator odours. It is also widely assumed that mammalian predators utilise odours to locate their prey. This thesis explores the importance of odour in Australian mammalian predator/prey interactions. Responses of native Australian species to the faecal odour of two predators; the native tiger quoll Dasyurus maculatus and the introduced red fox Vulpes vulpes, were evaluated through live-trapping and focussed behavioural studies of captive animals. Tiger quoll responses to prey olfactory cues were investigated in a captive experiment. Native rodents (bush rats Rattus fuscipes, swamp rats R. lutreolus and eastern chestnut mice Pseudomys gracilicaudatus) equally avoided traps scented with either quoll or fox faeces, and in captive experiments, bush rats and swamp rats reduced their average speed in response to both predator odours. Of the marsupial species, northern brown bandicoots Isoodon macrourus and common brushtail possums Trichosurus vulpecula were captured more frequently in quoll-scented traps than unscented traps or foxscented traps, while captures of brown antechinus Antechinus stuarttii, long-nosed bandicoots Perameles nasuta and southern brown bandicoot I. obesulus were unaffected by the either predator odour. In captive experiments, brown antechinus, long-nosed and northern brown bandicoots decreased their foraging in response to both predator odours, and spent less time in areas scented with quoll faeces. Tiger quolls didn't appear to detect odour sources from a distance of >65 cm, but they did follow scent trails and spent more time in areas scented with the urine and faeces of potential prey. Chemical analysis revealed no common components in fox and quoll odour which prey species could be responding to. Therefore, these native species have evolved to respond to fox odour since foxes were introduced to Australia 130 years ago. The stronger response of native rodents to fox odour may be a legacy of their co-evolution with canid predators prior to entering Australia. A better understanding of how odour is utilised in Australian predator/prey interactions may lead to a greater ability to protect Australia's unique mammalian fauna from introduced predators.