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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.
111

Byggandet av fiskvägar och möjligheten för samordning med betongunderhåll

Johansson, Lucas January 2022 (has links)
Många av Sveriges vattenkraftverk drivs med gamla tillstånd. Detta har letttill att regeringen tvingat fram en omprövning av alla elproducerandevattenkraftverk mot miljöbalken och moderna miljövillkor. En av de storaåtgärderna som kommer behöva utföras vid många av anläggningarna för attanpassa kraftverket till moderna miljövillkor är byggnation av fiskvägar.Detta medför en betydande kostnad för verksamhetsutövaren och det blirdärför viktigt att hitta lösningar för att hålla ned dessa kostnader så mycketsom möjligt. Ett sätt att spara pengar är genom samordning mellanbyggandet av fiskväg med det återkommande betongunderhållet. Dennarapport undersöker möjligheterna för denna samordning med fokus på tidenför utförande och hur stor kostnadsökningarna faktiskt blir förverksamhetsutövaren. Det visar sig att över majoriteten av kraftverken haråtgärdsbehov i form av betongrenoveringar som ligger väl i tiden för attsamordnas med byggandet av eventuella fisktrappor. Att upphandla bådaåtgärderna under samma upphandling visar sig ha goda chanser förkostnadsbesparing. / Many of Swedens hydropower constructions operates on old permissions.This have led to a national reconsideration for every hydropower stationwhether or not they operates with modern environmental conditions or not.Interviews suggest that the main action that will be required probably is tobuild fish-ladders. This will be a large cost for the operator and therefore itis important to keep the cost as low as possible. One way of saving money isto bundle different projects to reduce costs. This paper investigates whetheror not bundling between building of fish-ladders and the recurring concretemaintenance would be economically advantageous and prefarable for theowner. The focus is to examine the possibility of bundling in terms of thetime-frame of both the construction of the fish-ladder and the concretemaintenance and check the difference in cost between these two actions.The results suggests that a majority of the examined hydropower-stationshave renovation measures to deal with within the same time-frame as theintended construction of fish-ladders. To bundle the two operations alsoseems like an economically preferable choice.
112

"Vi måste ju ändå få in barnets upplevelse" - Om socialsekreterares upplevelser av barns delaktighet / “We need to account for the child’s point of view regardless” - On social worker's experience with child participation

Bülow, Clara, Tasevska, Gabriella January 2024 (has links)
Children undergoing investigation by the social services have a right to participate during the process. The social services must accommodate this right according to law. Participation is created when the social worker meets the child, which makes the social worker a significant person when the child’s right to participation is implemented in social work practices. The aim of this study is to examine the experiences social workers employed by child- and family services have in enabling and accommodating children’s participation during investigative social work. The study has two research questions: what forms do child participation take, according to social workers, during investigations conducted by social services and how do social workers enable child participation in their work methods? The study was conducted through the use of qualitative method. The empirical data was collected by interviewing five social workers and the data was analysed through the use of a thematic analysis, prior research and the theoretical framework of Roger A. Hart’s Ladder of Participation. The result showed that child participation was considered important to all informants and that it was essential to make sure the child had the opportunity to express their opinions and receive information about their case. Participation was also accommodated through meetings away from the social office, to aid the child’s sense of security. The result also showed that some factors can become obstacles for child participation. There is resistance towards participation when social workers suspect that the children might be harmed through taking part in an investigation, which makes the use of alternative sources to garner the child’s view seem appropriate. Furthermore, the practice of involving children in decision making was not a certainty. A conclusion is thus that social work practices need to evolve to promote child participation within areas where social workers feel resistance towards participation, such as in protective work and in decision making.
113

Extendable ladder cover solution for swedish fire vehicles

Molbeck Blyth, Marco Aurelio, Acosta Vega, María Isabel January 2016 (has links)
The following thesis project has been done in direct collaboration with Autokaross i Floby AB Rescue Vehicle Department, in Sweden.  The report contains the design development of a protective cover against weather conditions for the extendable ladder in a fire vehicle.   The aim of the report has been to develop a functional and low cost solution cover for the FEL on a fire truck, which is allocated on the roof, with the express intention of providing adequate access and protection against weather conditions in Nordic countries, so as to prevent premature deterioration of the FEL unit. The company has set the technical and conceptual boundaries, with the help of the two previous concepts currently used, the BMC and the ACP.   The initial requirements laid out by the company were expressed through a number of specific demands which can be categorized in two main points:   Cost: Designing a solution keeping in mind cost limits, assembly cost and time, and space optimization. This was done by taking into account the two existing solutions, particularly the BMC, which represents the lowest, cost wise and function wise. Therefore it was used as the basis on which to apply improvements, rather than trying to lower the high cost on the overqualified function of the ACP.   Function: Providing the adequate protection and access to the FEL. In this case, the problem was solved by establishing the correct degree of protection relevant to the Nordic weather conditions and FEL needs, and regarding the access, this was assured by fully automating the opening/closing process with the existing extraction operating system of the FEL.     The result of this report is a concept solution which meets the company’s demands, obtained by creative detailing, together with an analysis regarding possible considerations that could improve the creative detailing result in this report in the form of future work.     The report documents the process that has taken place in exploration, concept generation, concept evaluation, concept selection, and detailed CAD development. Each section shows the requirements and adjustments taken to fulfil the company’s needs.
114

Att tala eller inte tala : En fallstudie om anställdas röst ur ett organisationskulturellt perspektiv / To speak or not to speak : A case study of employee voice through an organisational perspective

Rydhmer, Maria, Kraupp, Isabelle January 2016 (has links)
Studien undersöker anställdas röst ur ett organisationskulturellt perspektiv. Anställdas röst avser den kommunikation som sker när en anställd är missnöjd med sin arbetssituation och vill förbättra sin egen och/eller organisationens välbefinnande. Det är på så vis viktigt för en organisations möjlighet till utveckling, vilket i sin tur är en central del för organisationer i dagens konkurrerande samhälle. Organisationskulturen har en stor inverkan på individers beteenden. Ofta undviker anställda att göra sin röst hörd vilket är ett problem som många inte känner till. Mer kompetens och forskning inom ämnet är därför viktigt. Genom kvalitativa intervjuer med ÅF:s (Ångpanneföreningens) anställda, Carneys abstraktionsstege och Scheins kulturnivåer, undersöker vi hur en organisationskultur kan påverka anställdas röst. Studien utgår från tre frågeställningar där vi genom de två första urskiljer ÅF:s kulturnivåer och genom den sista svarar på hur ÅF:s organisationskultur främjar respektive hämmar anställdas röst. Resultatet visar att kulturnivåerna och deras interrelation indirekt och direkt påverkar anställdas röst. Om de är främjande och/eller hämmande beror på kulturens underliggande element. Kulturelement med positiv koppling till välvilja, prosocialt beteende och utveckling har visat sig vara viktiga främjande faktorer för anställdas röst. Kulturen visar sig även vara en viktig faktor i vad som anses vara tillräckligt relevant information för att göra sin röst hörd. / The study examines employee voice from an organisational cultural perspective. Employee voice refers to the communication that occurs when an employee is dissatisfied with its work situation and wants to improve its own and/or the organisation's wellbeing. Employee voice is important for an organisation's potential for development, which in turn is central for organisations of today's competitive society. The organisational culture has a major impact on individuals' behaviour. Employees often avoid voice, which is a problem that many do not know. More expertise and research in the area is therefore important. Through qualitative interviews with ÅF’s (Ångpanneföreningen) employees, Carney’s abstraction ladder and Schein’s levels of culture, we investigate how an organisational culture influences employee voice. The study is based on three questions, where we through the first two discern ÅF’s cultural levels. The third question answers how ÅF’s organisational culture is promoting and/or inhibiting employee voice. The result shows that the cultural levels and their inter-relationship have indirect and direct effects on employee voice. The effect depends on the culture’s underlying elements. Cultural elements that positively links to kindliness, prosocial behaviour and development, have proven to promote employee voice. The culture also appears to have an effect on what information is considered relevant enough for employee voice.
115

The Perceived Impact of the Texas Career Ladder Plan upon the Motivational Levels of Teachers

Allen, Claudis 12 1900 (has links)
The problem of this study was to determine the perceived impact of the Texas Career Ladder Plan upon the motivational levels of teachers. The purposes were to determine: the impact of the Texas Career Ladder Plan as an incentive for improved job performance; the strengths and weaknesses of the current Texas Career Ladder Plan; the types of incentives that teachers believe would motivate them to perform better; and the suggestions that teachers have to modify the current Texas Career Ladder Plan. An opinionnaire was developed to obtain data pertinent to the perceived impact of the Texas Career Ladder Plan in providing incentives for improved job performance. A random sample of 500 elementary school teachers and 500 secondary school teachers was selected from the personnel rosters of the participating schools. Data from 92 percent of the subjects sampled was achieved. A descriptive analysis was used to interpret data collected in this study. The findings indicated that the Texas Career Ladder Plan has had no impact or a perceived negative impact upon the motivational levels of teachers as indicated by 14 of the opinionnaire items surveyed. There was a perceived positive impact upon the motivational levels of teachers as indicated by eight of the opinionnaire items surveyed. The most frequent suggestion as an incentive to motivate teachers was monetary and the most frequent suggestion to improve the Texas Career Ladder Plan was to improve the teacher appraisal system. It is suggested that further research be done to determine the perceived impact of the Texas Career Ladder Plan upon the motivational levels of all teachers in the state of Texas and the characteristics of the teachers that were perceived to be positively impacted.
116

Delaktighet av grundsärskoleelever i skolbloggar

Kågebäck, Maria January 2019 (has links)
Syftet med studien är att bidra med kunskap om personals uppfattningar av och arbete med skolbloggen i en grundsärskola med inriktning ämnesområde. Studien synliggör mönster, metoder och förhållningssätt som främjar elever med medel, måttlig och grav utvecklingsstörning till delaktighet i producering av skolbloggar. Bakgrunden till studiens inriktning utgår från egna erfarenheter och diskussioner med kurskollegor kring skolbloggens syfte och betydelse för elever inom grundsärskola. Vidare grundar sig studien på litteratur, tidigare nationell, internationell forskning samt teoretiska begrepp om delaktighet. De teoretiska begreppen som var grund för studien var Harts (1992) delaktighetsstege samt Szönyi och Söderqvist Dunkers (2015) delaktighetsmodell. Studien byggdes upp utifrån från kvalitativa metoder och bildade sedan ett frågeformulär som respondenterna fyllde i. Studien visar att det finns svårigheter för elever inom särskolan med inriktning ämnesområden att bli inkluderade och delaktiga i skolbloggen. Svårigheterna genomsyrar de tre frågeställningarna och får stöd av litteratur och forskning som berör delaktighetens komplexitet för särskolan. Det som styr skolbloggarnas syfte, personalens etiska ställningstagande och elevernas faktiska medverkan för producering av skolbloggar är personalens individuella och gemensamma förutsättningar för att förstå relevansen i etik och makt gentemot elever. / The purpose of this study is to contribute with knowledge of about how teachers and other staff in the schools experience and use school blogs in classes where children has learning disabilities. The study clarifies patterns, methods and approaches which promotes the participation of students with different degrees of disability in the development of the school blog. The background for the study is based on my own experiences from working with children with disabilities and their school blogs and from discussions with university colleagues. Further impact of the study is based on literature, national and international science and theoretical concepts of participation. The theoretical concepts that were included in the study was Harts (1992) participation ladder and Szönyi and Söderqvist Dunkers (2015) participation model. The study contained a questionnaire that was developed to enable qualitative analyses. The result revealed that the pupils possibility to participate in the production of the school blogg was depending on the school workers ability to handle authority and ethics. The results and previous research also shows that school blogs needs to have support from the school administration so that schools has common prerequisites for school blogs. When common prerequisites was used pupils were more involved in the school blog development.
117

Classification of separable superintegrable systems of order four in two dimensional Euclidean space and algebras of integrals of motion in one dimension

Sajedi, Masoumeh 01 1900 (has links)
No description available.
118

Ladder-type oligo-(p-phenylene)s for hybrid optoelectronic devices based on resonant energy transfer

Kobin, Björn 06 July 2016 (has links)
In der heutigen Zeit sind optoelektronische Bauelemente allgegenwärtig. Sie finden Anwendung für Beleuchtungszwecke, in Anzeigen und für die Telekommunikation. Die Entwicklung dieser Anwendungen wurde lange Zeit von anorganischen Halbleitern getragen, in jüngerer Vergangenheit auch von der organischen Elektronik. Neuerdings werden verstärkt Konzepte entwickelt, um die spezifischen Vorteile der jeweiligen komplementären Materialklassen auszunutzen. Für diese Hybridisierung müssen die Eigenschaften der verschiedenen Materialien, insbesondere die elektronische Struktur, genau auf einander abgestimmt sein. In dieser Arbeit werden Leiter-para-phenylene auf spektrale Überlagerung und angepasste Orbitalenergien mit ZnO, auf chemische Inertheit und auf die Bildung von dünnen Schichten über vakuumbasierte Verarbeitungsmethoden optimiert. Dazu konzentriert sich der synthetische Gesichtspunkt auf die selektive Funktionalisierung der verschiedenen Methylenbrücken mit Alkyl-, Aryl- und Fluorsubstituenten. Die finalen Stufen werden bezüglich ihrer optischen Eigenschaften mittels Absorption und Fluoreszenz, bezüglich ihrer elektrochemischen Eigenschaften und bezüglich ihrer Festkörperstruktur mittels Röntgenstrukturanalyse von Einkristallen charakterisiert. Außerdem widmet sich ein erheblicher Teil dieser Arbeit der Erforschung des photochemischen Abbaus von fluorenbasierten Strukturen. Es werden neue Erkenntnisse zum Abbaumechanismus und der Ursache der grünen Emission gewonnen. Weiterhin werden die Abbauraten von Fluorenstrukturen mit verschiedenen Brückensubstituenten verglichen. Dabei konnten auch verschiedene Reaktionsprodukte und Mechanismen nachgewiesen werden. Letztendlich wird auch die Anwendung einzelner Derivate in Hybridstrukturen diskutiert. / Nowadays optoelectronic devices are ubiquitous for illumination purposes, in telecommunication and displays. For a long time, the development for these devices was driven by inorganic semiconductors, later organic semiconductors contributed, as well. Recently concepts have been developed to combine both complementary material classes to exploit the specific advantages of each one. For the hybridization, the properties of the materials, especially the electronic structure, have to match very well. In this work the optimization of ladder-type p-phenylenes towards spectral overlap and energy level alignment with ZnO, vacuum-processability, inertness, as well as layer formation is described. In terms of molecular design the different properties are addressed by site-selective functionalization of the methylene bridges with alkyl, aryl, and fluoro groups. The final products are characterized regarding their optical properties by absorption and fluorescence, their electrochemical properties, as well as their solid-state structure by single crystal X-ray diffraction. Apart from that, a large part of the work is devoted to investigations of the photochemical degradation of fluorene-type structures. New insights are gained into the mechanism of degradation, as well as the origin of the green emission in ladder-type structures The dependence of the rate of degradation is described semi-quantitatively with respect to the substitution pattern. By that, different reaction mechanisms for different substituents are found. Finally, the integration of some products in hybrid structures is discussed.
119

Modelos de transição energética residencial e o acesso a serviços energéticos limpos: uma análise a partir de dois estudos de caso / Residential energy transition models and the access to clean energy services: an analysis based on two case studies

Sgarbi, Felipe de Albuquerque 02 August 2013 (has links)
A transição energética residencial começou a receber especial atenção da comunidade científica nos anos 1970 e 1980, quando se acreditava na ocorrência iminente da Crise da Lenha. Na época, temia-se que o corrente ritmo de consumo de biomassas sólidas em países em desenvolvimento ultrapassaria a capacidade de produção primária dos ambientes naturais, com sérias consequências para as camadas menos abastadas da população destes locais, que se veriam em uma situação de escassez de fontes de energia. Apesar de esta crise nunca haver, de fato, se concretizado, a preocupação com a sua potencial ocorrência estimulou o desenvolvimento de modelos que visavam à interpretação do fenômeno da transição energética residencial decorrente do processo de urbanização e aumento de renda dos usuários finais. Tal interesse culminou na elaboração do modelo da Escada Energética que, de uma maneira geral, previa que o abandono de fontes de energia tradicionais e a adoção de fontes de energia modernas era o resultado do aumento do status social da população. Inicialmente, a Escada Energética se estabeleceu como principal modelo de transição energética residencial. À medida que novos estudos foram desenvolvidos, entretanto, evidências passaram a sugerir que diversos fatores envolvidos na transição energética em países em desenvolvimento não podiam ser explicados pelo modelo. Estas evidências subsidiaram a concepção do modelo do Acúmulo de Combustíveis, segundo o qual a diversificação, e não a substituição, de energéticos seria o resultado do desenvolvimento social da população. Atualmente, não existe consenso sobre qual modelo melhor reflete o fenômeno da transição energética residencial. Como consequência, políticas públicas de acesso a energia e serviços energéticos limpos baseadas nestas diferentes interpretações possuem características e resultados distintos. Neste contexto, o presente trabalho pretende contribuir para a discussão sobre qual modelo de transição energética melhor reflete a realidade dos consumidores residenciais de energia de países em desenvolvimento a partir da apresentação de dois estudos de caso que retratam diferentes facetas da questão. As análises elaboradas indicam que o modelo do Acúmulo de Combustíveis consegue representar com maior fidelidade o fenômeno da transição energética residencial e que políticas públicas estruturadas segundo seu arcabouço teórico podem contribuir mais eficazmente para a melhoria das condições de vida da população. / The residential energy transition began to receive special attention from the scientific community in 70s and 80s, when a Fuelwood crisis was believed to be imminent. At the time, it was feared that the current rhythm of solid biomass consumption would not keep pace with the primary productivity of the forests and other sources of fuelwood, with severe consequences striking the least wealthy households, who would face an energy shortage. Although the referred crisis never really happened, the concern with its potential occurrence stimulated the development of models aiming at interpreting the energy transition phenomenon provoked by the urbanization process and the increase in income of households. Such interest culminated in the elaboration of the Energy Ladder model, which indicated that the abandonment of traditional energy sources and the adoption of modern ones was the result of the increase of the social status of the population. Initially, the Energy Ladder established itself as the main residential energy transition model. As new studies were being developed, however, evidences suggesting that different factors related to the energy transition in developing countries couldnt be explained by the model were found. These evidences supported the conception of the Fuel Staking model, according to which diversification, instead of substitution, resulted from the social development of the population. Currently, there is no consensus on which model better represents the residential energy transition. As a consequence, public policies focused on clean energy and energy services access based on these different interpretations have different characteristics and results. In such context, this work intends to contribute to the discussion on which energy transition model better reflects the reality of households in developing countries by presenting two case studies showing different aspects of the thematic. The analysis presented suggests that the Fuel Stacking model can better represent the residential energy transition phenomenon and that public policies structured according to its theoretical framework are more effective in contributing to increase the living standards of the population.
120

L’Échelle de Jean du Sinaï dans la tradition byzantine : le corpus manuscrit, les scholies, le Commentaire d’Élie de Crète / The Ladder of John Climacus in the Byzantine tradition : manuscript corpus, scholia, Elias of Crete’s Commentary

Venetskov, Maxim 06 June 2018 (has links)
La présente étude s’attache à retracer l’histoire textuelle de l’Échelle, encore jamais entreprise, à travers un corpus manuscrit comportant près de 350 codices ; ce corpus est traité exhaustivement du IXe s. au XIIIe s. et partiellement jusqu’au XVIIe s .L’ouvrage composé au VIIe s. est constitué des discours ascétiques de Jean du Sinaï et de plusieurs pièces-annexes. Il est considéré dans la tradition manuscrite comme le livre de l’Échelle (Κλίμαξ) faite de trente degrés, guide spirituel menant au ciel, et son auteur reçoit l’appellation de Climaque (ὁ τῆς Κλίμακος). Les pratiques de lecture de l’ouvrage, sa place dans les recueils et ses emprunts témoignent du rôle important qu’a joué l’Échelle, avec ses aphorismes et ses métaphores, dans la littérature ascétique à Byzance. Un abondant corpus de scholies exégétiques rédigées au Xe s. et développé par des citations d’auteurs ascétiques au XIe s. atteste de la réception originale de l’œuvre de Jean Climaque. Le Commentaire d’Élie de Crète, composé au début du XIIe s. et conservé dans 19 manuscrits, propose une exégèse exhaustive de l’ouvrage en s’appuyant sur les scholies mais aussi sur de nombreuses références patristiques et philosophiques. La présente thèse propose un classement des codices de l’Échelle, de ses scholies et un stemma codicum du Commentaire d’Élie ; tous les manuscrits examinés sont décrits sous forme d’un répertoire. L’étude établit les éditions princeps et critiques de nombreuses scholies et d’une partie du Commentaire. / The study relates the textual history of the Ladder, which has never been made attempted before, through a manuscript corpus containing nearly 350 codices exhaustively from the 9th to the 13th and partially up to the 17th century.The work composed in the 7th century is made up of the ascetic discourses of John Sinaites and of a few textual pieces enclosed with them. It is considered in the manuscript tradition as the book of the Ladder (Κλίμαξ) made of thirty steps, spiritual guide leading to Heaven, and its author receives the name of Climacus (ὁ τῆς Κλίμακος). The ways this book was read, its place in the collections and its quotations indicate the important role played by the Ladder, with its aphorisms et metaphors, in the ascetic literature in Byzantium. An abundant corpus of exegetic scholia written in the 10th century and developed in the form of quotations of ascetic authors in the 11th century attests to the original reception of the treatise of John Climacus. The Commentary of Elias of Crete, composed at the beginning of the 12th century and preserved in 19 manuscripts, proposes an exhaustive exegesis of the Ladder, relying on scholia but also on many patristic and philosophical references.The present dissertation establishes a classification of the codices of the Ladder, of its scholia and proposes a stemma codicum of the Elias’ Commentary ; all the examinated manuscripts are described in a repertoire. The study provides Princeps and critical editions of numerous scholia and of a part of the Commentary.

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