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充權效果: 一個在安老院舍進行之個案硏究. / Chong quan xiao guo: yi ge zai an lao yuan she jin xing zhi ge an yan jiu.January 1997 (has links)
梅惜靑. / 論文(社會工作碩士) -- 香港中文大學硏究院社會工作學部, 1997. / 參考文獻: leaves 102-112. / Mei Xiqing. / 鸣谢 --- p.ii / 硏究摘要 --- p.ii / Chapter 第一章 --- 導言 --- p.1 / Chapter 第一節 --- 人口老化 --- p.1 / Chapter 第二節 --- 院舍生活 --- p.2 / Chapter 第三節 --- 硏究目標 --- p.4 / Chapter 第二章 --- 文獻探討 --- p.5 / Chapter 第一節 --- 充權的意義 --- p.5 / Chapter 第二節 --- 充權在社會工作中的概念 --- p.7 / Chapter 第三節 --- 充權在老人服務中的概念 --- p.11 / Chapter 第四節 --- 充權在老人院舍服務中的概念 --- p.12 / Chapter 第三章 --- 理論架構 --- p.17 / Chapter 第一節 --- 充權的定義 --- p.17 / Chapter 第二節 --- 應用充權的工作方法 --- p.18 / Chapter 第四章 --- 社會工作應用充權的涵義 --- p.21 / Chapter 第一節 --- 充權取向的社會工作 --- p.21 / Chapter 第二節 --- 應用充權的原則和要素 --- p.22 / Chapter 第三節 --- 充權的實務策略 --- p.23 / Chapter 第四節 --- 充權工作員指引 --- p.23 / Chapter 第五節 --- 應用充權之案例效果 --- p.25 / Chapter 第五章 --- 硏究方法 --- p.32 / Chapter 第一節 --- 硏究原因 --- p.32 / Chapter 第二節 --- 硏究目的 --- p.33 / Chapter 第三節 --- 硏究方法 --- p.33 / Chapter 第四節 --- 硏究工具 --- p.40 / Chapter 第五節 --- 數據分析 --- p.41 / Chapter 第六章 --- 結果分析 --- p.43 / Chapter 第一節 --- 充權小組資料分析 --- p.43 / Chapter 第二節 --- 問卷資料分析 --- p.76 / Chapter 第三節 --- 資料分析總結 --- p.81 / Chapter 第七章 --- 結論和建議 --- p.88 / Chapter 第一節 --- 結論 --- p.88 / Chapter 第二節 --- 硏究資料對院舍工作的含義 --- p.89 / Chapter 第三節 --- 建議 --- p.91 / 附錄(一) --- p.93 / 附錄(二) --- p.98 / 附錄(三) --- p.99 / 附錄(四) --- p.100 / 附錄(五) --- p.101 / 參考書目 --- p.102
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Tourisme et curiosités : approche communicationnelle du légendaire dans les guides de voyage imprimés / Tourism and curiosities : a communicational approach of legendary speech in printed travel guidesVergopoulos, Hécate 29 November 2010 (has links)
On considère volontiers que la légende est un objet que se partagent les communautés « extra-modernes ». Traditionnelle, elle est donc lointaine dans le temps et/ou dans l’espace. C’est cette légende qu’étudient, par exemple, les anthropologues. Une autre alternative consiste à penser que la légende est, au contraire, très proche de notre « modernité ». Elle est alors urbaine ou contemporaine, n’est plus vraiment une légende mais une rumeur et s’impose comme le terrain privilégié des « rumorologues ». Traditionnelle, elle se manifeste ainsi dans un ailleurs de la modernité urbaine ; moderne, elle s’y incarne, mais n’est plus traditionnelle. En somme, on refuse à la légende, en tant qu’objet traditionnel, une opérativité socioculturelle à l’intérieur de nos propres sociétés. Or, si les guides les médiatisent, c’est bien qu’elle possède cette opérativité. Toute la question est de savoir comment la définir. À partir d’analyses sémiotiques menées sur un corpus de guides généralistes présentant New York et l’Écosse (Le Routard, les guides Bleu, Vert et Voir, le Lonely Planet, le Petit Futé et la Bibliothèque du voyageur) mais aussi de guides « spécialisés » (Guide du Paris mystérieux, Le Guide de la France mythologique et les Sites mystérieux et légendaires de nos provinces françaises), cette étude qui défend une approche communicationnelle se propose d’aborder le légendaire – à savoir les légendes et la façon dont elles sont commentées par les guides – comme un objet de discours capable d’instituer un certain rapport à la culture qui serait de l’ordre de la curiosité ou de l’insolite. La première partie met ainsi en évidence le fait que le légendaire se manifeste comme un objet anecdotique dans les guides de voyage. Ceux-ci disent, en effet, le caractère extraordinaire du référent légendaire tout en postulant et/ou en instituant, cependant, son insignifiance du point de vue culturel. Anecdotique, le légendaire est, en outre, insaisissable. C’est ce que montre la seconde partie en se concentrant sur la façon dont les guides font des énoncés légendaires des objets proprement inclassables : curieux, ils disent l’étrangeté de l’ordre du monde ; insolites, ils ne disent rien de plus que leur incongruité. S’il est à la fois anecdotique et insaisissable, comment se fait-il que le légendaire fasse pourtant culture ? La troisième partie répond à cette question en montrant que c’est précisément parce qu’il se définit comme tel qu’il fait culture. Ainsi, le légendaire est un objet de discours qui permet, à celui qui le dit, de se manifester dans le monde social à travers une forme d’auctorialité définie par une désinvolture à l’égard des hiérarchies de valeurs traditionnelles. Par ailleurs, elle montre qu’il est un objet de discours qui se livre au lecteur/voyageur dans le but d’être réitéré. Autrement dit, le légendaire circule, à partir de ces dispositifs touristiques que sont les guides, en proposant à ceux qui se l’approprieraient de renverser ou de détourner l’ordre culturel ; d’habiter le monde en tant qu’il est social, le temps infime de l’énonciation légendaire / It is a widespread thought that legends are either traditional or modern, but never both at the same time. When traditional, they are supposed to be told in far away countries, in space and/or in time. These legends are usually studied by anthropologists. When urban, they stop being traditional and are not really legends anymore. They are called “rumours” and are mostly studied by “rumourologists”. However, their presence in travel guides shows that they do have an operativity as traditional objects in our modern culture. Starting with a semiotic analysis of some French-written travel guides conducted through a communicational perspective, this research aims to show that legendary speech – i.e. legends and the way they are told and commented in travel guides – is an object that can institute a specific relationship to culture identified as curiosity or uniqueness (“insolite” in French). The first part of the research enlightens the fact that legendary speech appears as an anecdotal object in travel guides. Indeed, these books suggest that legendary speech does say something extraordinary, but they also seem to believe or want to prove that it is insignificant from a cultural point of view. Anecdotal, legendary speech is also elusive. It is what the second part of the research shows focusing on the way travel guides manage to build up the impossibility to classify this kind of speech. When curious, legendary speech tells us about the strangeness of the world order. When unique, it says no more than its own incongruity. If legendary speech is at the same time anecdotal and elusive, what makes it cultural? The third and last part of the research answers this question. It shows that legendary speech does deal with culture precisely because it appears as both anecdotal and elusive. It is an object of discourse that allows the one who implements it to come out into the social world as an “author”, in the sense that one signs a cultural point of view characterized by a certain casualness towards the common hierarchy of values. It also shows that this speech is delivered to the reader/traveller in order to be reiterated. In other words, the possible circulation of this speech, from travel guides to tourists, suggests that it can be appropriated, so as to reverse or divert the cultural order, so as to inhabit, for the one who says it, the social world, the fractional time of its enunciation
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Hearing the Missing Voices: An analysis of Female Guides in the Association of Canadian Mountain Guides’Parks, Brenda E. Unknown Date
No description available.
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Turismo e pobreza: percep??es dos guias de turismo, moradores e n?o moradores que trabalham na favela da Rocinha Rio de JaneiroCosta, Augusto Marcelo Alc?ntara 03 December 2013 (has links)
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Previous issue date: 2013-12-03 / This project refers to a study somewhat controversial , as in focusing less recognized and
valued hand, although the dynamics of tourism pass to take another view , you can not
beforehand consider favorable or unfavorable . Analyzes the phenomenon related to
conception or perception of poverty from tourism residents and non residents of the Favela of
Rocinha in Rio de Janeiro tourist guides . It is a subject to an object of research somewhat
controversial , but about which there is already an academic and scientific concern and
deserves an investigator look. Fits as a qualitative study whose methodological procedure
based on interviews and participant observation , and the geographic divisions chosen the
Rocinha slum , for its expressiveness and for being a pioneer in this type of tourism , had to
conducting fieldwork lasting six months, which was accompanied by at least four hours
walking work of sixteen tour guides, eight residents and eight non- residents in the
community, working for different travel agencies and tourism. End of each tour, all tour
guides answered a semi-structured questionnaire, containing nineteen questions. Most
respondents tour guides authorized record interview, which has made it possible to analyze
the speech through spoken language. In tourism, foreign tourists are the main target, although
rarely also count with the participation of domestic tourists. Notes that the relationship
between poverty and slums, from the perceptions of tourist guides residents better reflects the
reality of favela residents compared with non residents guides, since they fully know all the
intricacies and better the difficulties they have endured and still go, when it comes to the issue
of stigmatization respect, by which has suffered by Brazilian society, in relation to live in
slums, and have your dwelling place as a tourist attraction. While presenting the social reality
of Rocinha consistently during his work, the non residents guides worry about being as
natural as possible with tourists as much as the locals show slum, in the same way they avoid
authorize tourists to take compromising photos and that will expose the intimacy of
community residents . Concludes that, while recognizing the importance of elevation to the
rank of tourist attraction and its promising prospects, requires attention and priority, given the
greater precariousness of the human condition in relation to the prime areas in which it
operates tourism should be a vector of development, not a masking of reality / O presente projeto refere-se a um estudo um tanto controverso, na medida, em que focaliza
um lado menos reconhecido e valorizado, embora a din?mica do turismo passe a ter outra
visualiza??o, que n?o se pode de antem?o considerar favor?vel ou desfavor?vel. Analisa-se o
fen?meno do turismo relacionado ? concep??o ou percep??o de pobreza partir dos guias de
turismo moradores e n?o moradores da favela da Rocinha, no Rio de Janeiro. ? um assunto
com objeto de pesquisa um tanto pol?mico, mas sobre o qual j? existe uma preocupa??o
acad?mica e cient?fica e que merece um olhar investigador. Enquadra-se como estudo
qualitativo, cujo procedimento metodol?gico baseado em entrevistas e observa??o
participante, sendo o recorte geogr?fico escolhido a Favelada Rocinha, pela sua
expressividade e por ser pioneira nessa modalidade de turismo, teve-se a realiza??o de
trabalho de campo com dura??o de seis meses, onde acompanhou-se por no m?nimo quatro
horas a p? o trabalho de dezesseis guias de turismo, sendo oito moradores e oito n?o
moradores pela comunidade, que trabalham para diferentes ag?ncias de viagens e turismo. Ao
final de cada tour, todos os guias de turismo responderam a um question?rio semiestruturado,
contendo dezenove perguntas. A maioria dos guias de turismo entrevistados autorizou gravar
entrevista, fato que possibilitou fazer uma an?lise do discurso atrav?s da linguagem falada.
Neste turismo, os turistas estrangeiros s?o o alvo principal, embora, tamb?m conte raramente,
com a participa??o de turistas nacionais. Constata que, a rela??o entre favela e pobreza, a
partir das percep??es de guias de turismo moradores reflete melhor a realidade da favela
comparado com guias n?o moradores, uma vez que eles conhecem inteiramente todos os
meandros e melhor as dificuldades por que passaram e ainda passam, no que diz repeito ?
quest?o da estigmatiza??o pela qual vem sofrendo pela sociedade brasileira, em rela??o a
viver na favela, al?m de terem o seu lugar de moradia como atra??o tur?stica. Ainda que
apresentem a realidade social da Rocinha de modo coerente durante seu trabalho, os guias n?o
moradores preocupam-se em ser o mais natural poss?vel com os turistas, tanto quanto os
moradores ao mostrar a favela, do mesmo modo em que evitam autorizarem os turistas a
tirarem fotos comprometedoras e que venham expor a intimidade dos moradores da
comunidade. Conclui que, apesar de reconhecer a relev?ncia de eleva??o ? categoria de
atra??o tur?stica e suas promissoras perspectivas, requer aten??o e prioridade, em face da
maior precariza??o da condi??o humana, em rela??o ?s ?reas nobres em que est? inserida
devendo o turismo ser um vetor de desenvolvimento, n?o um mascaramento da realidade
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Modèles dynamiques réduits de milieux périodiques par morceaux : application aux voies ferroviaires / Reduced dynamic models of piecewise periodic media : application to railway tracks.Arlaud, Elodie 09 December 2016 (has links)
Dimensionnée de manière semi-empirique, la voie ferrée est un système mécanique dont le comportement dynamique reste difficile à appréhender et à quantifier. Un outil numérique peut alors être à la fois une aide à la conception, en évaluant la performance de nouvelles structures, et un élément de diagnostic sur les voies existantes, en complément de mesures terrain adaptées.L'outil développé dans ce travail s'appuie sur les techniques de résolution des équations de propagation dans les guides d'ondes dans le domaine des fréquences/nombres d'onde. Sa particularité est l'introduction d'un modèle réduit basé sur une sous-structuration périodique de la structure, en ne conservant, pour la résolution des équations de dispersion, que quelques nombres d'onde judicieusement choisis. En s'appuyant sur cette technique de réduction de modèle et son extension à des modèles temporels avec contact mobile, les coûts de calcul et de stockage sont largement diminués. Cela en fait un outil performant et utilisable dans des études d'ingénierie portant sur la voie ferrée.Des étapes de vérifications numériques sur les hypothèses sous-jacentes à la réduction ont été réalisées en construisant un modèle fréquentiel complet par transformée de Floquet. En parallèle, des campagnes d'essais dynamiques (mesures de réceptance et d'accélération sur traverse au passage des trains) ont été réalisées sur une zone de transition entre voie ballastée et voie sur dalle sur ligne à grande vitesse. Les résultats obtenus expérimentalement permettent de valider les simulations dans les domaines temporel et fréquentiel sur les différentes zones de la transition. Le modèle permet de mieux comprendre l'effet de la sous-structure sur le comportement dynamique. Une des grandes avancées de ce travail est également l'introduction d'une stratégie permettant d'utiliser la méthode de réduction pour coupler des zones présentant des tranches différentes. Des outils de post-traitement ont été développés pour mettre en lumière les effets dynamiques générés par la transition. / Railway tracks have evolved over years based on empirical results and their dynamic behavior still can be difficult to assess or to quantify. A numerical model can thus provide assistance in track design by assessing the mechanical performance of new structures, or allowing the diagnostic of existing track parts, as a complement to relevant in-situ measurements.The numerical model developed in this work combines a reduction strategy with numerical techniques used to solve the propagation equations in waveguides in the frequency / wave number domains. The peculiarity of the exposed methodology is the introduction of a model based on a periodic sub structuring of the track, keeping only a few wavelengths carefully chosen to solve dispersion equations. Based on this model reduction technique and its extension to time domain models with moving contact, the computational time and storage capacity required are greatly reduced. Thus, this model is efficient and useful for engineering purposes in railway tracks studies.Numerical validation of the reduction is carried out by building a complete reference model in the frequency domain. In parallel, measurement campaigns (receptance measurement and sleeper acceleration under passing trains) were performed on a transition zone between ballasted and slab tracks on a High Speed Line. These tests are compared to simulation results in both time and frequency domains on different areas of the transition. After successful validation, the model is used to improve understanding of the role of the substructure on the dynamic behavior.The final major development of this work is the introduction of a strategy to extend the reduction to piecewise periodic structures and the development of post-processing tools to highlight the dynamic effects generated by the transition zone.
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THE PROPAGATION OF EMP IN A PLASMA-FILLED WAVEGUIDE.Righettini, Marlene Elaine. January 1983 (has links)
No description available.
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A path integral approach to the coupled-mode equations with specific reference to optical waveguidesMountfort, Francesca Helen 03 1900 (has links)
MSc / Thesis (MSc (Physics))--University of Stellenbosch, 2009. / The propagation of electromagnetic radiation in homogeneous or periodically modulated media can
be described by the coupled mode equations. The aim of this study was to derive analytical expressions
modeling the solutions of the coupled-mode equations, as alternative to the generally used numerical
and transfer-matrix methods. The path integral formalism was applied to the coupled-mode equations.
This approach involved deriving a path integral from which a generating functional was obtained. From
the generating functional a Green’s function, or propagator, describing the nature of mode propagation
was extracted. Initially a Green’s function was derived for the propagation of modes having position
independent coupling coefficients. This corresponds to modes propagating in a homogeneous medium
or in a uniform grating formed by a periodic variation of the index of refraction along the direction of
propagation. This was followed by the derivation of a Green’s function for the propagation of modes having
position dependent coupling coefficients with the aid of perturbation theory. This models propagation
through a nonuniform inhomogeneous medium, specifically a modulated grating.
The propagator method was initially tested for the case of propagation in an arbitrary homogeneous
medium. In doing so three separate cases were considered namely the copropagation of two modes in
the forward and backward directions followed by the counter propagation of the two modes. These more
trivial cases were used as examples to develop a rigorous mathematical formalism for this approach. The
results were favourable in that the propagator’s results compared well with analytical and numerical
solutions.
The propagator method was then tested for mode propagation in a periodically perturbed waveguide.
This corresponds to the relevant application of mode propagation in uniform gratings in optical fibres.
Here two case were investigated. The first scenario was that of the copropagation of two modes in a long
period transmission grating. The results achieved compared well with numerical results and analytical
solutions. The second scenario was the counter propagation of two modes in a short period reflection
grating, specifically a Bragg grating. The results compared well with numerical results and analytical
solutions. In both cases it was shown that the propagator accurately predicts many of the spectral
properties of these uniform gratings.
Finally the propagator method was applied to a nonuniform grating, that is a grating for which the
uniform periodicity is modulated - in this case by a raised-cosine function. The result of this modulation
is position dependent coupling coefficients necessitating the use of the Green’s function derived using
perturbation theory. The results, although physically sensible and qualitatively correct, did not compare
well to the numerical solution or the well established transfer-matrix method on a quantitative level at
wavelengths approaching the design wavelength of the grating. This can be explained by the breakdown
of the assumptions of first order perturbation theory under these conditions.
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n Ouerleidingsprogram vir enkelouers : 'n oplossingsgerigte benaderingMalherbe, Henriëtte 12 1900 (has links)
Thesis (MA)--University of Stellenbosch, 2002. / ENGLISH ABSTRACT: This programme is aimed at providing parent guidance to single parents. It is
based on a reciprocal and egalitarian work relationship, using the parent's own
skills, knowledge, unique strengths and previous successes.
Solution-focused therapy developed from postmodernism. Therefore the
absence of an objective reality functions independently of a reality that is
linguistically constructed. The assumptions that underpin Solution-focused
therapy are discussed, since they form an essential element in the composition
of this programme. Since the guidance programme is implemented in a group
context, attention is paid to the therapeutic factors, dynamics and principles of
solution-focused group work. Techniques unique to Solution-focused work, such
as the miracle question, exceptions questions and grading questions are
explained.
These techniques are put into practice over six sessions: (1) identifying
problematic issues in single parent families, (2) focusing on any slight change,
(3) if it works, don't fix it, (4) if it doesn't work, do something else, (5) focus on
what is right, (6) celebrate changes and exceptions. Goals are set and
procedures work out for each session.
The programme is aimed at enhancing the single parent's own capacity for
generating solutions and constructing alternative meaning in a move away from a
problem orientation towards a solution orientation. / AFRIKAANSE OPSOMMING: Hierdie program is op ouerleiding aan enkelouers gerig. Oit berus op 'n
wederkerige en eqalitere werksverhouding, gebaseer op die ouer se vaardigheid,
eie kennis, unieke vermoens en vorige suksesse.
Oplossingsgerigte terapie het ontwikkel vanuit die postmodernisme.
Hiervolgens is daar nie 'n objektiewe werklikheid wat onafhanklik funksioneer van
die lingu"istiese gekonstrueerde weergawe van die realiteit nie. Die aannames
waarop Oplossingsgerigte terapie berus word bespreek, aangesien dit 'n
belangrike element in die samestelling van hierdie program vorm. Aangesien die
ouerleiding in groepverband geskied, word daar aandag geskenk aan die
terapeutiese faktore, dinamiek en beginsels van oplossingsgerigte groepwerk.
Tegnieke eie aan oplossingsgerigte werk, soos die wonderwerkvraag,
uitsonderingsvrae en graderingsvrae, word verduidelik.
Die verpraktisering van bogenoemde geskied in ses sessies wat soos volg
uiteengesit is: (1) die identifisering van problematiese kwessies by
enkelouergesinne, (2) fokus op klein veranderinge, (3) as dit werk, moet dit nie
'regmaak' nie, (4) as dit nie werk nie, doen iets anders, (5) fokus op dit 'wat reg
is', (6) die viering van verandering en uitsonderings.
uiteengesette doelwitte en prosedurenotas.
Hierdie program poog om die ouer se eie kapasiteit vir die generering van
Elke sessie het
oplossings te fasiliteer en alternatiewe betekenisse te konstrueer, deur die klem
te verskuif van 'n probleemgerigtheid na 'n oplossingsgerigtheid.
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Stress and coping strategies in recently widowed rural black womenSomhlaba, Ncebazakhe Z. 12 1900 (has links)
Thesis (MA)--University of Stellenbosch, 2002. / ENGLISH ABSTRACT: The relationship between stress and coping strategies in bereavement was examined in 70 recently
widowed rural black women (mean age 36.53 years). Correlations were sought between coping
strategies (as measured by the Coping Strategy Indicator) and anxiety (as measured by the S-scale of the
State-Trait Anxiety Inventory), depression (as measured by the Beck Depression Inventory), social
support (as measured by the Social Support Scale) and biographical variables. Of the participants,
88.57% were at least mildly depressed, while 78.57% experienced anxiety of above average intensity.
Depression scores were significantly higher for those who were unemployed than for those who had
paid work. Those with an education of Standard 6 or below made significantly more use of social
support-seeking strategies than those with high school and tertiary education. Those whose husbands
had died suddenly made more use of problem-solving strategies, while those whose husbands had died
of chronic illness made more use of social support-seeking coping strategies. Significant positive
correlations were found between an avoidant coping strategy and both depression and anxiety. A
significant positive correlation was found between a social support-seeking coping strategy and
perceived social support. Significant negative correlations were found between both problem-solving
and social support-seeking coping strategies and anxiety as well as depression scores. An avoidant
coping strategy emerged as a significant positive predictor of both anxiety and depression, while
problem-solving and social support-seeking coping strategies emerged as significant negative predictors
of depression. A problem-solving coping strategy alone emerged as a significant negative predictor of
anxiety. These findings point to the need for interventions aimed at more effective use of problemsolving
and social support-seeking coping strategies, rather than avoidance, if the widowed are to
effectively deal with their conjugal loss. Another implication of these findings is the importance of
helping those who are undergoing bereavement to continuously re-define their social support structures
for continued sustenance of social and emotional support. / AFRIKAANSE OPSOMMING: Die verband tussen stres en hanteringstrategieë is in 'n groep van 70 landelike swart vrouens (gemiddelde
ouderdom 36.53 jaar) wat hul eggenote onlangs aan die dood afgestaan het, ondersoek. Korrelasies tussen
hanteringstrategieë (gemeet deur die Coping Strategy Indicator) en angs (gemeet deur die S-skaal van die State-
Trait Anxiety Inventory), depressie (gemeet deur die Beck Depression Inventory), sosiale ondersteuning (gemeet
deur die Social Support Scale) en biografiese veranderlikes is ondersoek. Van die deelnemers was 88.57%
minstens tot 'n ligte mate depressief, terwyl 78.57% bogemiddelde angsvlakke ervaar het. Depressietellings van
werklose vroue was hoër as van diegene met 'n gesalarieerde werk. Diegene met Standerd 6 opleiding of laer het
beduidend meer gebruik gemaak van sosiale ondersteuning-soekende strategieë as diegene met hoërskool en
tersiêre opleiding. Diegene wie se eggenote skielik afgesterf het, het meer gebruik gemaak van
probleemoplossende hanteringstrategieë terwyl diegene wie se eggenote afgesterf het as gevolg van 'n chroniese
siekte, meer gebruik gemaak het van sosiale ondersteuning-soekende hanteringstrategieë. Beduidende positiewe
korrelasies is aangetref tussen 'n vermydende hanteringstrategie en beide depressie en angs. 'n Beduidende
positiewe korrelasie is aangetref tussen 'n sosiale ondersteuning-soekende hanteringstrategie en waargenome
sosiale ondersteuning. Beduidende negatiewe korrelasies is aangetref tussen beide probleem-oplossende en
sosiale ondersteuning-soekende hanteringstrategieë en angs sowel as depressie. 'n Vermydende hanteringstrategie
was 'n beduidende positiewe voorspeller van beide angs en depressie, terwyl probleem-oplossende en sosiale
ondersteuning-soekende hanteringstrategieë beduidende negatiewe voorspellers was van depressie. 'n
Probleemoplossende hanteringstrategie was 'n beduidende negatiewe voorspellers van angs. Hierdie bevinding
dui op die noodsaaklikheid van intervensies wat gemik is op die meer effektiewe gebruik van probleemoplossende
en sosiale ondersteuning-soekende hanteringstrategieë, eerder as vermyding, vir die weduwee om die
afsterwe van haar eggenoot effektief te kan hanteer. Nog 'n implikasie van die bevindinge is die belangrikheid
daarvan om diegene wat rou te help om voortdurend hul sosiale ondersteuningstrukture te herdefinieer vir
voortdurende onderhouding van sosiale en emosionele ondersteuning.
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Growth-based computer aided design strategies for multimode waveguide design with the aid of functional blocksVale, Christopher A. W. 12 1900 (has links)
Thesis (PhD) -- Stellenbosch University, 2001. / Some digitised pages may appear illegible due to the condition of the original hard copy. / ENGLISH ABSTRACT: A new technique for the design of multimode devices in overmoded waveguide is presented.
The technique applies the principle of growth-based design and uses a conceptual functional
block representation of the design structure to provide necessary flexibility to the design
algorithms. Two growth based design strategies are proposed and evaluated. The first uses a
generalized synthesis-oriented scanning technique, and the second uses an evolutionary
strategy. The techniques provide reliable solutions to a variety of multimode design problems.
In order to facilitate sufficiently fast numerical analysis, novel enhancements of the mode
matching technique are developed and the use of surrogate models is investigated. In addition,
to allow physical evaluation of the finished devices, original techniques of measuring
multimode devices are formulated and utilised.
Two practical problems are used to evaluate the performance of the design procedures. The
first is the design of overmoded waveguide chokes for microwave heating facilities, and the
second is the design of multimode horns for antenna and spatial power combining
applications. Various examples of each type of problem are presented with measurements of
manufactured solutions. / AFRIKAANSE OPSOMMING: ’n Nuwe tegniek vir die ontwerp van multimodusstelsels binne multimodus golfleier word
voorgestel. Die tegniek maak gebruik van die beginsel van groei-georienteerde ontwerp en
ontgin ’n konsepsuele funksionele module-voorstelling van die ontwerpstruktuur om die
nodige buigsaamheid aan die ontwerpsalgoritmes te verleen. Twee groei-georienteerde
ontwerpstrategiee word aangebied en geevalueer. Die eerste is gebasseer op ’n veralgemeende
sintese-georienteerde skandeertegniek, en die tweede maak gebruik van ’n evolusie-strategie.
Die tegniek verskaf betroubare oplossings vir ’n verskeidenheid van
multimodusontwerpsprobleme.
Ten einde ’n numeriese analise-tegniek daar te stel wat vinnig genoeg is, word oorspronklike
verbeterings van die modal-pas metode ontwikkel en surrogaatmodelle is ook ondersoek.
Verder, vir fisiese evaluasie, word oorspronklike meettegnieke vir multimodusstelsels
geformuleer en gebruik.
Twee praktiese probleme word gebruik om die ontwerpprosedures te evalueer. Die eerste is
die ontwerp van multimodus golfleierdrywingsdempers vir mikrogolfverhitting, en die tweede
is die ontwerp van multimodus horings vir antenna- en ruimtelike drywingskombineerdertoepasings.
Verskeie voorbeelde van elke tipe probleem word gegee met metings van
gei'mplementeerde oplossings.
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