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Molecular charaterisation and phylogenetic relationships among the cyprinid fishes of the genus enteromius cope , 1867 and their monogenean parasites of the genus dactylogyrus diesing, 1850 within the Limpopo River SystemRaphahlelo, Modibe Ezekiel January 2021 (has links)
Thesis (Ph.D. (Zoology)) --University of Limpopo, 2021 / The present study was conducted to evaluate the morphological and molecular
characterisation of species of Dactylogyrus parasitising Enteromius spp. from the
Limpopo River System, South Africa. In addition, the study was intended to
establish host-parasite associations from this system. A total of 95 host specimens
were collected from eight localities between 2015 and 2016 within the Limpopo
River System. Fish hosts were collected using gill nets, seine nets, fyke nets, and
an electric shocker. From these, three host species were identified,
E. afrohamiltoni, E. unitaeniatus, and E. trimaculatus where after monogenean
parasites were retrieved from the gills using stereo microscopes. Morphometric
analysis of the haptoral hard parts and male copulatory organs were studied for
species identification, supported by nuclear ribosomal DNA sequences of the
partial 18S rDNA region and the entire ITS-1 and partial 5.8S rDNA region, and the
partial 28S rDNA region. Examination of E. afrohamiltoni revealed the presence of
D. afrohamiltonii which is the first record of a monogenean parasite from this host.
In addition, E. unitaeniatus revealed the presence of two species of Dactylogyrus:
D. letabaensis and D. limpopoensis which are the first record of monogenean
parasites from this host. The remaining Dactylogyrus species were retrieved from
E. trimaculatus, namely, D. afrolongicornis, D. allolongionchus, and D. myersi.
Enteromius trimaculatus harboured five of the species retrieved. The two species,
D. afrolongicornis and D. allolongionchus were the most abundant from six of the
eight localities studied, followed by D. myersi abundant in five of the eight localities.
Dactylogyrus afrohamiltonii was considered a strict specialist, while the remaining
species were considered to be intermediate specialists.
Forty-one sequences of the partial 18S rDNA and the entire ITS-1 and partial 5.8S
rDNA region and 19 sequences of the partial 28S rDNA region of Dactylogyrus
species, including Pseudodactylogyrus anguillae were included to reconstruct the
phylogenetic relationships. Based on this, molecular analysis of D. afrolongicornis
from Enteromius hosts were recorded for the first time for the combined 18S rDNA
and the entire ITS-1 and partial 5.8S rDNA region. The analysis revealed several
groupings of Dactylogyrus species inferred largely from European cyprinoids and
corresponded to host specificity. From the partial 28S rDNA, three clades were
revealed linked to their biogeographical regions. Phylogenetic analysis from the
28S rDNA suggests that D. aspili from E. macrops and D. afrolongicornis are closely
related. / National Research Foundation (NRF) and
DST Innovation Scholarship and the Vlaamse Interuniversitaire RaadUniversity Development Corporation (VLIR-UOS)
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Relación entre asertividad y estilos de afrontamiento en un grupo de trabajadores de una empresa Avícola Familiar en Perú / Relationship between Assertiveness and Coping Styles in a group of workers in a family business in PeruGallardo Seminario, Angela Mariella 23 July 2020 (has links)
El presente estudio busca determinar la relación entre la asertividad y los estilos de afrontamiento de un grupo de trabajadores de una empresa familiar del sector Avícola en Perú. La muestra estuvo compuesta por 77 trabajadores, 44 hombres y 33 mujeres, con edades entre los 18 y más de 55 años, pertenecientes a las áreas administrativas de la empresa. Los instrumentos empleados fueron el Test de Afrontamiento (COPE) adaptado a Perú (Casuso, 1996) y el Test de Asertividad Rathus la versión Costaricense (León y Vargas, 2009). Los resultados revelaron la existencia de una correlación moderada entre ambas variables, así como correlaciones internas entre los estilos de afrontamiento y entre los tipos de asertividad. Las cuales fueron discutidas en cuatro hallazgos principales: a) Relación entre asertividad y el estilo de afrontamiento enfocado en el problema; b) Relación entre asertividad y el estilo de afrontamiento enfocado en la emoción; c) Asertividad en la empresa familiar; y d) Estilos de afrontamiento en la empresa familia. Finalmente, se dieron las recomendaciones para la futura gestión de ambas variables en la empresa donde se aplicaron las pruebas. / The present study aimed determine the relationship between Assertiveness and Coping styles of a group of workers from a Family Business of the Poultry sector in Peru. The sample consisted of 77 workers, 44 men and 33 women, aged between 18 and over 55, belonging to the administrative areas of the company. The instruments that were used the Coping Test adapted to Peru (Casuso, 1996) and the Rathus Assertiveness Test, the Costa Rican version (León and Vargas, 2009). The results revealed the existence of a moderate correlation between both variables, as well as internal correlations between coping styles and between assertiveness types. Which were discussed in four main findings: a) Relationship between assertiveness and coping style focused on the problem; b) Relationship between assertiveness and coping style focused on emotion; c) Assertiveness in family firms; and d) Coping styles in family firms. Finally, recommendations were given for the future management of both variables in the company where the tests were applied. / Tesis
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Reproductive Modes of the Least Chub (Iotichthys Phlegethontis - Cope)Crawford, Marianne 01 May 1979 (has links)
The reproductive biology of the least chub Iotichthys phlegethontis (Cope) was studied from June 1976 to March 1978. Fish from both field and laboratory populations of the Leland Harris Spring Complex, Juab Co., Utah were utilized in the study. Reproduction in 1977 occurred from April to July in the field population and from April through August in the laboratory population.
Reproduction was determined from gross examination and weight measurements of testes and ovaries, breeding coloration in males and diameter measurements of ova.
Males and females matured at about the same size, 28 to 30 mm TL. The number of mature ova produced during spawning ranged from 283 to 2752 for females 31 to 46 mm TL. Mature ova ranged in size from 0.8 to 1.28 mm. Least chub are partial and intermittent spawners. This conclusion is supported by ova diameter measurements and calculations of the duration and peak period of spawning.
Least chub are polyandrous broadcast spawners over vegetation. The eggs are demersal and adhesive. The egg incubation period was 2.1 days at 22.2 C. The eleutheroembryo are approximately 4 mm in length. They are not photophobic and appear to have cement glands. Specific characteristics of reproduction are discussed in relation to ecological conditions of the habitat.
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The Effect of Flooding on Inequality in Developing Countries: A Qualitative AnalysisGregory, Eva 01 January 2022 (has links)
Global warming continues to have a negative effect on the environment and, by extension, the economy. Incidence of natural disasters are increasing because of climate change, with flooding being one of the most common and costly types of disaster. Studies on the effect of floods on the economy have revealed that flooding increases the amount of income inequality. However, there is not a unified, qualitative analysis of the reasons for the post-flood increase in inequality. This thesis examines multiple different flood events in several developing countries to answer how flooding affects inequality in developing countries. It produces a synthesized analysis on the underlying causes of flood induced income inequality. These causes were found to be the increased vulnerability of low-income households to flooding and their lower capacity to cope with flood damages, relative to middle- or high-income households. Vulnerability has spatial and structural dimensions, and capacity to cope is influenced by a household’s asset portfolio and post-flood adaptation ability; it is also interconnected with coping capacity and contributes to a cycle of poverty escalation.
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Understanding the "Refugee" of Hurricane Katrina: An Exploration of Titles, Time and Post-Traumatic Growth.Timmons, Kandice L. 11 September 2015 (has links)
No description available.
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Examining the Relationships among General Coping, Alcohol-Specific Coping and Alcohol Use in a College Student PopulationWalker, N. Robrina 22 May 2007 (has links)
The coping and alcohol literature indicates certain styles of coping are more protective against alcohol use than others. The purpose of the current study was to explore the associations among general coping styles, alcohol-specific coping skills, drinking to cope motives, and alcohol use in an effort to further examine their theoretical relationships. It was hypothesized that: (1) The relationship between problem-focused coping and alcohol use would be mediated by alcohol-specific coping, (2) Drinking to cope would mediate the relationship between avoidant emotion-focused coping and alcohol use, (3) The problem-focused coping facets of planning, active coping, suppression of competing activities, and restraint coping would contribute the most to the prediction of alcohol-specific coping skills, and (4) Intention to regulate drinking would moderate the relationship between problem-focused coping and alcohol-specific coping such that the relationship between the two would be stronger in individuals who have greater intentions of regulating their drinking.
College students (N = 327) completed several self-report measures that assessed their alcohol use, general coping styles, use of alcohol-specific coping strategies, and endorsement of drinking to cope motives for alcohol use. Analyses of fully latent variables were conducted using structural equation modeling techniques. Results suggested alcohol-specific coping skills partially mediated the association between problem-focused coping and alcohol use. An unexpected positive direct association between problem-focused coping and alcohol use emerged; post-hoc analyses suggested specific facets of problem-focused coping more clearly explain that finding. The hypothesized relationships between avoidant focused coping and alcohol use were not supported but avoidant coping was significantly associated with drinking to cope, consistent with the literature. Finally, the positive association between problem-focused coping and alcohol-specific coping skills was not moderated by intentions to regulate drinking. Limitations and suggestions for future research are discussed. / Ph. D.
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Caring, the socialisation of pre-registration student nurses, a longitudinal studyMackintosh, Carolyn January 2006 (has links)
No / This study explores the impact of the process of socialisation on pre-registration student nurses views about care, and their personal ability to cope with becoming a nurse. Objectives: It aims to identify the effect time has on participants attitudes and views of care and becoming a nurse, during pre-registration nurse training, by using a descriptive longitudinal qualitative design. Setting: Data collection took place within the School of Health or on student's clinical placement areas, using a random sample of 16 pre-registration student nurses obtained from a convenience sample of 52 volunteers. Methods: Participants were involved in two semi-structured in depth interviews, the first 6-9 months after entering nurse training and the second 6-9 months prior to completion. Interviews were tape recorded, transcribed verbatim and analysed using Morse and Field's (1996) four stages of analysis. Results: Identified changes between data collection stages suggest socialisation results in a loss of idealism about care within nursing, as well as the identification of negative aspects of care. Loss of care is linked to increased abilities to cope with the nursing role, although this is not uniform and some participants clearly discriminate and reject negative exposures. In conclusion this study identifies an under recognised dichotomy between the caring ethos of professional nursing and the professional socialisation processes student nurses are subject to, which directly mitigate against the individual nurses abilities to care.
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Effekter av psykologisk debriefing och avlastningssamtal efter traumatisk händelse hos brandpersonalNyman, David, Einars, Gisela January 2010 (has links)
Denna uppsats undersöker effekter av psykologisk debriefing och avlastningssamtal efter traumatiska händelser hos brandpersonal. Enkätstudiens fokus låg på brandpersonalens känslomässiga påverkan av traumatiska händelser i arbetet. Femtionio personer deltog i enkätstudien, varav 91 procent upplevt en traumatisk händelse. Det fanns inga signifikanta skillnader i posttraumatiska stressreaktioner och psykologiskt välbefinnande hos brandmän efter traumatisk händelse beroende av huruvida brandmännen deltagit i tidig intervention i form av avlastningssamtal, psykologisk debriefing eller inte medverkat i någon form av tidig intervention. / This study investigated the effectiveness of psychological debriefing after traumatic events among professional firefighters. We sought to understand the emotional effect of traumatic events in daily work. To examine this, a survey was conducted with 59 firefighters and among these 91 percent had experienced a traumatic event. There were no significant difference in post trauma reactions and psychological well being among firefighters after traumatic event depending on participate or not participate in psychological debriefing.
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Marginalized Or Empowered? Conflict-induced Internally Displaced Kurdish Women' / s Experiences In TurkeyKuloglu Karsli, Ceyda 01 June 2012 (has links) (PDF)
This study is focusing on the conflict-induced internally displaced Kurdish women&rsquo / s experiences. There has been an ongoing internal armed conflict in Turkey since 1984 and one of the consequences of this conflict is the internal displacement that occured in 1990s. In the displacement process, women and other family members were victimized. They did not only loose their homelands, but they also had to struggle in the city centers with poverty and discrimination.
After they started to live in the city centers, women may become both marginalized and empowered. The aim of the study is to understand the situations that lead Kurdish women to be marginalized and/or empowered in the cities to which they have been forced to migrate. After the displacement process, which is one of the major victimization processes for these women, some of them may be trapped in ethnic and gender-based discrimination and may become more marginalized in the city centers. But marginalization and empowerment are not fixed categories and there is always a possibility for these women to transform their marginalized position into empowerment. By political engagement, working outside house and/or being head of the househod these women may break the cycle of their marginalization and becomes empowered in the city centers.
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Of?cio, Estresse e Resili?ncia: desafios do Professor Universit?rio.Barreto, Maria da Apresenta??o 13 December 2007 (has links)
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Previous issue date: 2007-12-13 / The objective of this study was to investigate the elements that contribute to the state of stress which often affects those who embrace the university teaching career, and also to
learn whatever strategies professors use to cope with stressing situations in order to develop resilience and a sound exercise of their profession. To the very nature of university teaching belong a variety of attributions, demands and challenges which, together, may contribute to the development of stress. The epistemological principles
which guided this research were those of Complex Thinking, which facilitate a deeper comprehension of the human and social phenomena as viewed through the lens of complexity principles: the dialogical principle, the organizational recursivity principle and the hologramatical principle. Fully acknowledging the many difficulties brought about by any attempt that would try to explain human phenomena based only on one theoretical reference, we have elected multi-referentiality as the support for this study, thus being able to dialogue with a variety of authors about the same phenomenon. This was a qualitative research in which questionnaires and interviews were used as instruments for the empirical work. The data has been articulated into categories and
subcategories, allowing for a thematic analysis. Participants of the study were seventeen professors from two different colleges in the city of Natal, state of Rio
Grande do Norte. Bad working conditions, demands from the institution, student s lack of commitment, long working hours, low salaries, lack of incentives to university
teachers, uncertainty concerning timetable and difficulties in proper time administration are the variables that contribute to the stress of professors. Although this is a problem
that affects the group as a whole, strategies to cope with it are individually sought and vary from trying to find different leisure options, opening one s heart to colleagues or
relatives, individual planning, prayer, rational facing of the situation, to simply giving in to exhaustion. The study has proposed institutional as well as personal actions that may
foster a development among professors which takes into account a resilience development in a collective perspective. Also, it shows some articulations that are
already under way so that professors may be attended to. / Esse estudo teve como objetivos investigar os elementos que contribuem para desencadear o estresse no exerc?cio da doc?ncia universit?ria e conhecer as estrat?gias adotadas pelos professores para enfrentar as situa??es estressantes, a fim de promover o desenvolvimento da resili?ncia e um exerc?cio saud?vel do of?cio. A doc?ncia universit?ria comporta em sua natureza uma diversidade de atribui??es, exig?ncias e
desafios que articulados poder?o contribuir para o desencadeamento do estresse. Os princ?pios epistemol?gicos que nortearam esta pesquisa foram os do Pensamento Complexo, pois facilitam o aprofundamento e compreens?o dos fen?menos sociais e humanos a partir dos princ?pios da complexidade: dial?gico, recurs?o organizacional e
o princ?pio hologram?tico. Reconhecendo a dificuldade em explicar os fen?menos humanos com base em ?nica refer?ncia te?rica, tem-se como apoio a multirreferencialidade, que permitiu dialogar com uma diversidade de autores a respeito do mesmo fen?meno. A pesquisa foi qualitativa e foram usados question?rios e
entrevistas como instrumentos para o trabalho emp?rico. Os dados foram articulados em categorias e subcategorias, permitindo-se proceder a uma an?lise tem?tica. Participaram
do estudo 17 professores de duas institui??es de Ensino Superior na cidade de Natal/RN. No exerc?cio da doc?ncia, as vari?veis que interferem no desencadeamento do estresse s?o: as m?s condi??es de trabalho, cobran?as institucionais, o descompromisso dos alunos, a jornada excessiva de trabalho, a baixa remunera??o, a
falta de incentivos ao professor, as incertezas quanto ? carga hor?ria e ?s dificuldades na administra??o do tempo. Embora a problem?tica seja comum ao grupo, as estrat?gias de
enfrentamento s?o adotadas individualmente, e oscilaram desde a busca de op??es de lazer, desabafo com colegas de profiss?o e com familiares, atividades f?sicas,
planejamento individual, ora??o, enfrentamento racional at? entregar-se ? exaust?o. As estrat?gias capazes de promover adapta??o positiva, combinadas com os fatores que
motivam o professor na a??o docente poder?o contribuir no desenvolvimento da resili?ncia O estudo prop?s a??es institucionais e pessoais que favore?am o desenvolvimento dos professores, levando em conta o desenvolvimento da resili?ncia numa perspectiva coletiva. Tamb?m evidenciou algumas articula??es que j? est?o sendo feitas num trabalho de acompanhamento aos professores.
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