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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
41

Life history parameters and regulation of the southern elephant seal population at Marion Island

Pistorius, Pierre Anton 28 November 2005 (has links)
Pup mortality of southern elephant seals at Marion Island from 1990 through 1999 ranged from 1.6 to 7.3%, averaging 3.8%. Pup mortality was density independent and dismissed as being a major population regulating agent at Marion Island. Juvenile survival over two periods, one during the population decline and the other after the population had stabilised, was assessed and compared using mark-recapture models. Survival was age- but not sex-related and on average, the probability of survival was 59.5%,81.4% and 78.1% for the first, second and third year respectively. There was no significant difference in survival over the two periods and juvenile survival does not appear to be an important population regulating component in the southern elephant seal population. Mark-recapture data for females from the Marion Island population since the population stabilisation (1994) was analysed and compared with similar data collected during the decline and with data collected from the increasing population in southern Argentina. Survival of prime-age adult females increased by 8% concurrent with the stabilisation at Marion Island, which ultimately compensated for an annual rate of decline of the population of 5.85% until 1994. Survival of adult females at the colony in southern Argentina was 6% greater than at Marion Island after the stabilisation. Adult female survival is concluded to predominantly regulate the population. Changes in adult female survival and breeding probabilities with age were quantified in order to measure the prevalence of senescence in the population. Less than a 1 % difference between prime-age and post prime-age survival was found over eight cohorts of marked females and no evidence of reproductive senescence in terms of reduced breeding probability with age was detected. Five percent of southern elephant seal females survived to age ten and 0.5 % to the age of seventeen. Pubescent male survival increased concordant with the population stabilisation. These animals have high energetic demands due to a secondary growth spurt during which growth is accelerated and this increase lends support to the hypothesis that food has been limiting the population at Marion Island. Future survival and breeding probabilities of females primiparous at different ages were estimated in order to investigate potential future fitness costs associated with early breeding. Annual future survival of females breeding at age three was the same as that for females primiparous at four and slightly higher than that for females primiparous at five and six. Future breeding probabilities of females primiparous at three were similar to that for females primiparous at four and older. I found no evidence for future fitness costs incurred through reproductive expenditure and conclude that age of primiparity IS determined by acquisition of a critical body mass, after which no future delay in reproduction takes place. I estimated future survival and capture probabilities of southern elephant seals that winter at Marion Island during their first three years and compared these values to similar estimates from individuals that were not observed to winter over the same time periods. There were no significant differences in survival between wintering and non-wintering elephant seals suggesting that survival is not a fitness correlate of wintering behaviour. I provide unique evidence of differential site fidelity within age- and sex classes, which has implications for population modelling. / Thesis (PhD (Zoology))--University of Pretoria, 2006. / Zoology and Entomology / unrestricted
42

Amor e dom na fenomenologia de Jean-Luc Marion

Coutinho, Carolina Detoni Marques Vieira 27 February 2014 (has links)
Submitted by Renata Lopes (renatasil82@gmail.com) on 2016-01-25T14:21:30Z No. of bitstreams: 1 carolinadetonimarquesvieiracoutinho.pdf: 765959 bytes, checksum: a5296aa67ab4062e23e975cc17ceee10 (MD5) / Approved for entry into archive by Adriana Oliveira (adriana.oliveira@ufjf.edu.br) on 2016-01-25T19:34:15Z (GMT) No. of bitstreams: 1 carolinadetonimarquesvieiracoutinho.pdf: 765959 bytes, checksum: a5296aa67ab4062e23e975cc17ceee10 (MD5) / Made available in DSpace on 2016-01-25T19:34:15Z (GMT). No. of bitstreams: 1 carolinadetonimarquesvieiracoutinho.pdf: 765959 bytes, checksum: a5296aa67ab4062e23e975cc17ceee10 (MD5) Previous issue date: 2014-02-27 / CAPES - Coordenação de Aperfeiçoamento de Pessoal de Nível Superior / Este trabalho tem por objetivo abordar o pensamento do filósofo francês Jean-Luc Marion acerca do amor. A busca pela univocidade do conceito filosófico de amor e a relação do mesmo com o tema do dom articulam-se em sua fenomenologia bastante particular. O amor, não mais dividido entre, por exemplo, eros e ágape, é tema da redução erótica de Marion, desenvolvida, principalmente, em sua obra Le phénomène érotique. A pretendida univocidade radical do amor, nos interpostos limites da fenomenologia e da teologia, em Marion, relaciona-se diretamente com a ipseidade, a alteridade e o conhecimento que, de Platão a Santo Agostinho, inserem-se na lógica própria do amor. / La proposition de ce travail c’est approcher la pensée du philosophe français Jean-Luc Marion par rapport à l’amour. La quête vers l’univocité du concept philosophique de l’amour et la relation de celui-ci avec le sujet du don s’articulent dans sa phénoménologie très particulière. L’amour, non plus divisé entre, par example, eros et agapè, c’est le sujet de la reduction érotique chez Marion, developpée surtout dans son oeuvre Le phénomène érotique. L’intentionée univocité radicale de l’amour, dans les limites interposées de la phénoménologie et la théologie, chez Marion, s’articulent directement avec l’ipseité, l’alterité e la connaissance qui, de Platon à Saint Augustin, s’intègrent à la logique même de l’amour.
43

Criteria and Outcome of C. S. D. Foster Home and Residential Placements of Court-referred Adolescents

Dickey, Joan 01 January 1975 (has links)
This study is concerned with a set of cases referred to Children's .Services Division, Marion County, by the Marion County Juvenile Court for placement. Placements include foster homes and residential treatment facilities, including group homes. The goal of this study is to uncover criteria to determine the appropriateness and the efficacy of foster and residential placements for adolescents in order to provide feedback necessary for the development of practice theory.
44

Return to a Small Town: Sherwood Anderson as a Country Newspaper Editor, 1927-28

Snyder, Cary M. 25 April 2008 (has links)
No description available.
45

El mantenimiento de español como lengua de herencia y el rol de la lectura

Brammer, Katy 06 November 2013 (has links)
Indiana University-Purdue University Indianapolis (IUPUI) / A causa de la falta de acceso al español formal y al español escrito, es típico que después de dos generaciones de inmigrantes, los hispanos pierdan su competencia en español. La lectura voluntaria, cuando uno lee porque quiere, es utilizada como método de impedir la pérdida del español como lengua de herencia. El propósito de este estudio es investigar cómo la lectura voluntaria facilita la adquisición y el mantenimiento del español como lengua materna.
46

Comparative phylogeographic patterns among selected indigenous and introduced Collembola on Marion Island

Myburgh, Marike 04 1900 (has links)
Thesis (MSc)--University of Stellenbosch, 2006. / ENGLISH ABSTRACT: Marion Island is situated approximately 2600 km southeast of Cape Town and is the larger of the two islands that comprise the Prince Edward Island group. During past glaciation events, Marion was partially covered by ice with fauna and flora confined to isolated refugia across the island. As a result of these long-term isolation events, it is postulated that species predating these glaciation events might show geographic partitioning of genetic variation. Subsequently, the majority of Southern Oceanic islands have a history of sealing activities with vessels frequenting various islands in their hunt for seals. These combined visits to several islands could have facilitated the introduction of alien species, or the reintroduction of species already present on islands. These incidents, combined with more recent scientific voyages, have led to the establishment of several exotic species on Marion Island. Two indigenous Collembola species (Cryptopygus antarcticus (Willem, 1901) and Tullbergia bisetosa (Börner, 1903)) were chosen as model species to investigate the possible effects of glaciation on the spatial distribution of genetic variation on indigenous species. Given the negative impact that alien taxa have on indigenous species and ecosystems, the phylogeographic population structure of the recently introduced Isotomurus cf. palustris (Müller, 1876) was determined and compared to those described for the two indigenous species. To address these questions, two mitochondrial DNA genes were targeted: cytochrome oxidase subunit I (COI) and cytochrome oxidase subunit II (COII). These genes were sequenced (GENBANK accession numbers DQ147289-DQ147558) and analysed using, amongst others, AMOVA (Analysis of Molecular Variance), SAMOVA (Spatial Analysis of Molecular Variance) and NCA (Nested Clade Analysis). As expected, the two indigenous species showed distinct signs of population expansion, whilst the recently introduced species exhibits little genetic variance across its range. The life histories of species have an influence on their resultant genetic signature; therefore life history parameters were incorporated to explain differences in the phylogeographic patterns observed for these three species. / AFRIKAANSE OPSOMMING: Marion Eiland is die groter van twee eilande wat die Prins Edward eilandgroep vorm, ongeveer 2600 km suid-oos vanaf Kaapstad. Gedurende glasiasie episodes in die verlede, was Marion gedeeltelik met ys bedek en fauna en flora was geisoleer in klein gedeeltes van die eiland wat beskut was. As gevolg van hierdie langtermyn isolasie word daar voorgestel dat spesies wat op die eiland was voor hierdie gebeurtenisse plaasgevind het, ‘n geografiese verdeling van genetiese variasie sal toon. Sedertdien het die meerderheid van die eilande in die Suidelike Oseaan ook ‘n geskiedenis van skepe wat op een of meer van die eilande aangedoen het in die jag op robbe. Hierdie besoeke deur die robjagters aan die eilande het meegebring dat daar eksotiese spesies op die eiland aangekom het of dat spesies wat reeds op die eiland voorgekom het, opnuut daar geland het. Hierdie, tesame met die onlangse wetenskaplike reise na Marion Eiland, het daartoe gelei dat baie eksotiese spesies ingevoer is na die eiland. Twee inheemse spesies, naamlik Cryptopygus antarcticus (Willem, 1901) en Tullbergia bisetosa (Börner, 1903) is gekies om as model spesies te dien om die moontlike gevolge van glasiasie op die geografiese verspreiding van genetiese variasie te toets. In ag geneem die moontlike negatiewe impak wat eksotiese spesies op die inheemse spesies mag hê, is die filogeografie van ‘n uitheemse spesie, Isotomurus cf. palustris (Müller, 1876) ook bepaal en vergelyk met díe van die bogenoemde inheemse spesies. Dit is gedoen deur twee gene, sitokroom oksidase I (COI) en sitokroom oksidase II (COII) te analiseer. Hierdie gene se basispaarvolgordes is bepaal (GENBANK toetreenommers DQ147289-DQ147558), en hulle is ge-analiseer deur gebruik te maak van AMOVA (Analise van Molekulêre Variasie), SAMOVA (Ruimtelike Analises van Molekulêre Variasie) en NCA (geseteldegroepsanalises). Net soos verwag, het die twee inheemse spesies albei duidelike tekens getoon van ‘n bevolkingstoename terwyl die uitheemse spesie amper geen variasie oor sy verspreidingsgebied getoon het nie. Die lewensstyle van spesies het ‘n beduidende invloed op hulle genetiese bevolkingstruktuur. As sulks is díe in ag geneem om die verskille tussen hulle genetiese strukture te verduidelik.
47

Evaluation of archaeological survey techniques : a comparison of phase Ia methodology at Site 12Ma648

Draeger, Cathy L. January 2007 (has links)
Reconnaissance survey (Phase Ia) provides the backbone to archaeological field methodology. Archaeological sites are typically discovered through reconnaissance techniques, more often via pedestrian survey and shovel probe testing. There is a lack of a consensus in the archaeological community on whether or not these techniques are effective as reconnaissance methodology. The following thesis evaluates these techniques' relative effectiveness at finding and preliminarily evaluating archaeological sites, the main objectives of reconnaissance. This study compares actual and simulated surveys using both techniques on a multi-component site in a woodland setting as well as addressing the cost-effectiveness of these techniques when estimating the time needed to complete them. / Department of Anthropology
48

A five year survey of students who have attended the Marion County Vocational School

Unknown Date (has links)
"The purpose of this paper is to provide information which may useful to the Marion County Director of Adult and Vocational Education and to the County School Board in planning future vocational courses, and improving the effectiveness of those now being offered"--Introduction. / "February, 1958." / Typescript. / "Submitted to the Graduate Council of Florida State University in partial fulfillment of the requirements for the degree of Master of Science." / Advisor: Edward K. Hankin, Professor Directing Paper. / Includes bibliographical references (leaf 24).
49

Curanderismo and Health Delivery Services

Blaesser, Jean Margaret 01 January 1974 (has links)
This study explores and describes curanderismo (folk curing) and the cultural disease concepts of mollera caida, empacho, mal de ojo, and susto as researched in a rural Oregon community. Chicano cultural disease concepts and beliefs are then related to modern health delivery services, and a case is made for the need for cultural awareness, respect, and sensitivity on the part of medical personnel who deliver services. The approach of a curandera (curer) and a doctor are compared. It is strongly stated that Chicanos’ health beliefs and practices do not exist in isolation from the rest of their culture, and that the concept of familias is a particularly important focal point in the harmony of this culture. It is suggested that health delivery services as well as all helping services cannot afford to neglect the totality of a Chicano cultural viewpoint if their services are to have relevance. Practical suggestions for health personnel are included. Data were collected primarily through the participant-observer method.
50

Physiological plasticity in arthropods from Marion Island : indigenous and alien species

Slabber, Sarette 12 1900 (has links)
Thesis (PhD)--University of Stellenbosch, 2005. / ENGLISH ABSTRACT: Climate sets range limits in many taxa, and as climate changes, the ranges that plants and animals occupy are altered. The responses of species to climate change involve either migration or local adaptation. An investigation of the local physiological adaptation shown by indigenous and alien arthropods to temperature acclimation formed the primary focus of this study. Increased environmental temperatures favour the establishment of alien species on Southern Ocean Islands. The first records of Porce/lio scaber Latreille, 1804 (Isopoda, Porcellionidae) and an Aphidius wasp species from Marion Island were documented here. The alien wasp was discovered in 2003 and had a current known distribution along the east coast of Marion Island. Both isopods and wasps were reproducing successfully on Marion Island. The wasp species is an aphid parasitoid and had been found mummifying the alien aphid Rhopalosiphum padi. These introductions highlighted the ongoing conflict between use and conservation on the Southern Ocean Islands. Despite considerable work on the upper and lower lethal limits of insects, several major taxa have received little attention. Here this issue was addressed and the lower and upper thermal tolerances and cold hardiness strategy of Antarciopsocus jeanneli Badonnel (Psocoptera: Elipsocidae) from sub-Antarctic Marion Island was investigated. A. jeanneli is freeze intolerant, and more specifically, moderately chill tolerant. Field fresh A. jeanne li had a mean supercooling point (SCP) of -11.1oC, whereas LTSO was -7.7°C, indicating pre-freeze mortality. A. jeanneli responded to acclimation: mean SCP increased from -IS.8°C at a treatment temperature ofO°C, to -7.3°C at ISOC. Investigations of the responses to acclimation of upper and lower lethal limits and limits to activity in insects have focussed primarily on Drosophila. Halmaeusa atriceps (Staphylinidae) was examined for thermal tolerance responses to acclimation, and seasonal acclimatization. In summer and winter, lower lethal temperatures of adults and larvae were c. -7.6 ± 0.03 and -11.1 ± 0.06 °C, respectively. Supercooling points (SCPs) were more variable, with winter SCPs of -S.4 ± 0.4 °C in larvae and -6.3 ± 0.8 °C in adults. The species appeared to be chill susceptible in summer and moderately freeze tolerant in winter, thus showing seasonal acclimatization. Critical thermal minima varied between -3.6 ± 0.2 and -0.6 ± 0.2 °C in larvae, and from -4.1 ± 0.1 to -0.8 ± 0.2 °C in adults. These findings were in keeping with the general pattern found in insects, although this species differed in several respects from others found on Marion Island. In this study the differential responses of indigenous and invasive springtails to temperature were explicitly examined in the context of the beneficial acclimation hypothesis (BAH) and its alternatives. In particular, the thermal acclimation responses of desiccation resistance, supercooling ability, lower and upper thermal limits were compared. Invasive springtails (Pogonognathellus jlavescens, Isotomurus palustris and Ceratophysella denticulata) did not display greater phenotypic flexibility than indigenous springtails (Cryptopygus antarcticus and Tullbergia bisetosa), but did perform better under high temperature conditions. Indigenous species, however, performed better under low temperature conditions. In most cases the BAH was not supported, or could not be distinguished from its alternatives. The prediction that invasive species will outperform indigenous species as climates on Southern Ocean Islands warm was supported. Because temperature plays such a large role in the distribution, abundance and physiological tolerances of invertebrates, microhabitat temperatures along an altitudinal gradient (0 to 800 m above sea level (asi)) were investigated over a two-year period on Marion Island. Mean microhabitat temperatures were comparable to those from previous studies for Southern Ocean Islands, and declined with increasing altitude. The 800 m asl site had the most severe microclimate (highest absolute maximum, lowest absolute minimum and the highest frequency of freeze-thaw cycles). Year one was substantially colder than year two, indicating that interannual variation in microclimate conditions could be responsible for substantial mortality amongst. invertebrate populations. Indeed, indigenous species were best able to tolerate the high incidence of low temperatures at high altitudes, whereas alien species appeared to be confined to lower altitudinal sites on Marion Island, possibly as a consequence of extreme low temperatures at higher altitudes. / AFRIKAANSE OPSOMMING: Klimaat is een van die grootste faktore wat die verpreiding en digthede van dier en plantspesies bepaal. Soos wat klimaatsverandering plaasvind, kan spesies migreer om stresvolle klimaatstoestande te vermy, of hulle kan aanpas by plaaslike omstandighede. Dit is die laasgenoemde opsie wat in hierdie tesis ondersoek was. Die opsporing van Porcellio scaber Latreille, 1804 (Isopoda Porcellionidae) en 'n Aphidius wesp van Marion Eiland word hier aangeteken. Die huidige verspreiding van houtluise in die omgewing van die Navorsingstasie dui daarop dat hulle die eiland waarskynlik vanaf Kaapstad in bou-materiaal bereik het. Die wesp is gedurende 2003 ontdek en is tans versprei langs die oostelike kuslyn van Marion Eiland. Beide hierdie spesies plant suksesvol voort op Marion Eiland. Die wesp spesie parasiteer die uitheemse plantluis Rhopalosiphum padi. Uitheemse muise en die inheemse kleinskedebek weier tot dusver om P. scaber te eet. Die ontdekking van twee nuwe uitheemse spesies dui weereens op die konflik tussen bewaring en benutting van die Suidsee Eilande. Ten spyte daarvan dat aansienlike aandag gewy is aan die hoë- en lae temperatuur toleransies van insekte, is daar talle taksa wat selde nagevors word. Dié toleransies is dus nagevors vir die boekluis Antarctopsocus jeanneli Badennel (Psocoptera: Elipsocidae) van Marion Eiland. Die spesie is vries vermydend, en meer spesifiek, matig verkoelingsbestand. Veldvars A. jeanneli het 'n gemiddelde superverkoelingspunt van - 11.1 °C gehad, en letale temperature (LTSO) van -7.7 °C, wat aandui dat individue vrek voordat hulle vnes, Hierdie spesie reageer op akklimasie: gemiddelde superverkoelingspunt het toegeneem van -15.8 °C na akklimasie by 0 °C tot -7.3 °C na akklimasie by 15 oe. Die effek van akklimasie op temperatuur toleransie in insekte het dusver meestalop Drosophila gefokus. Hier vors ons die effek van akklimasie op die temperatuur toleransie van Halmaeusa atriceps (Styphylynidae) na. In die somer en winter was die lae letale temperature van kewers en larwes onderskeidelik -7.6 ± 0.03 en -11.1 ± 0.06 °C. Superverkoelingspunte (SVP) het meer gevarieer, met SVP van -5.4 ± 0.4 °C in larwes en -6.3 ± 0.8 oe in kewers. Die spesie IS verkoelingsvatbaar in die somer en matig vriesbestand in die winter, wat dui op akklimatisasie in hierdie spesie. Kritiese termale minima het tussen -3.6 ± 0.2 en -0.6 ± 0.2 oe in larwes, en tussen -4.1 ± 0.1 tot -0.8 ± 0.2 oe in kewers gewissel. Hierdie spesie blyk dieselfde fisiologiese tendense wat in insekte te vinde is uit te beeld, maar verskil in verskeie opsigte van ander insekte op Marion Eiland. Hierdie studie het ook die verskillende reaksies van inheemse en uitheemse springsterte met betrekking tot temperatuur akklimasie bestudeer. Die voordelige-akklimasie hipotese en sy alternatiewe hipoteses is in terme van akklimasiereaksies tot desikkasie weerstand, superverkoeling en lae- en hoë temperatuur bestandheid in Marion Eiland springsterte getoets. Die uitheemse springsterte (Pogonognathellus jlavescens, Isotomurus cf palustris en Ceratophysella denticulata) het nie beter fenotipiese plastisiteit getoon as die inheemse spesies (Cryptopygus antarcticus en Tullbergia bisetosa) nie. Die inheemse spesies het egter beter gevaar onder lae-temperatuur toestande. Die voordeligeakklimasie hipotese ontvang nie veelondersteuning in die huidige studie nie, maar kon in sommige gevalle nie van die alternatiewe hipoteses onderskei word nie. Klimaatsverandering mag uitheemse spesies bevoordeel. Die rol wat temperatuur in die verspreiding en fisiologiese toleransies van invertebrate speel word lank reeds waardeer. Daarom vors hierdie studie die mikrohabitat temperature teen 'n gradient tussen seespieël en 800 m bo seespieël (m bs) oor 'n tydperk van twee jaar op Marion Eiland na. Gemiddelde temperature is vergelykbaar met die van vorige studies op Marion Eiland, en neem af soos wat hoogte bo seespieël toeneem. Die 800 m bs studie-gebied het die mees stresvolle mikrohabitat-toestande ondervind (die hoogste absolute maksimum, laagste absolute minimum temperature, en die meeste vries-ontdooi siklusse). Inheemse spesies op Marion Eiland toon hoër.toleransies tot lae temperature as uiheemse spesies, laasgenoemde kom slegs voor by laer hoogtes bo seespieël, waar ekstreme ternperatuur-toestande dalk minder volop is. Klimaatsverwarming mag egter tot 'n toename in ekstreme weerstoestande lei op Marion Eiland, wat aansienlike mortaliteit in invertebraat populasies kan veroorsaak.

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