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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.
31

Pre-Historic Landslides on the Southeast Flank of the Uinta Mountains, Utah: Character and Causes of Slope Failure

Bradfield, Todd D. 16 March 2007 (has links) (PDF)
More than 100 landslides have been mapped along the southeast flank of the Uinta Mountains. Large landslide deposits are up to 4.6 kilometers long and have an area of approximately 5-9 km². Landslide types include multiple and successive rock slumps, debris slumps and debris flows. Most landslides have a main head scarp in the Bishop Conglomerate and the large landslides have many minor scarps. Multiple slump blocks are manifest by repeated transverse ridges and trenches in the head area of some landslides. Most body and toe areas are deeply incised by gully erosion (up to 91 meters deep) and drainages are well developed with little ponding. Detailed mapping of the large landslides shows that the deposits are an accumulation of successive slope failures that have continually eroded the landscape over time. Many landslides in the area appear to be inactive and dormant but slopes may continue to fail particularly if landslides are disturbed. A Geographic Information System (GIS) was used to analyse slope failing factors and the main factor that seems to have contributed to slope failure is the presence of abundant shale-rich, weak bedrock capped with the thick and fairly resistant Bishop Conglomerate. Slopes are further destabilized as water percolates down through the porous Bishop Conglomerate. Eventually the water meets underlying shale-rich bedrock where it is channelled near this contact until it emerges as springs. This groundwater flow likely reduces shear strength of the shale-rich substrate and of some of the finer grained layers in the Bishop Conglomerate. Other important slope failure factors include the removal of easily erodable Mesozoic shales from beneath the more-resistant Bishop Conglomerate, headward gully erosion, bedrock dip and slope aspect.
32

The Fourth Grade Slump: The Relationship Between Reading Attitudes and Frequency of Reading

Donaldson, Nicole M. 14 May 2010 (has links)
No description available.
33

Assessing Warm-Season Annual Grasses to Increase Forage Inventory

Marroquin, Andrea 28 October 2022 (has links) (PDF)
Summers are expected to continue to increase in heat/dryness in the Northeast, causing issues pertaining to forage production during the summer to worsen. Many pastures grow cool season grasses, even during the summer. These grasses enter a dormant period and slowdown in production during the months of July and August, leading to what is referred to as “summer slump”. Some farms grow corn silage during the summer, and while corn silage is a valuable crop, its cultivation often does not support soil biology. This research addresses solutions for both summer slump foraging and more sustainable silage. Summer annuals grow more efficiently during the summer and can produce better quality forage compared to winter grasses. Pearl Millet and Sudangrass were evaluated at seed percentages 0-100%. Biomass of each grass was evaluated by cutting a 2x3 ft section on a bi-weekly basis to establish how the treatments vary over time by seeding ratio and type of warm-season grass. Two separate cuts evaluated yield, quality, and regrowth. Another cut looked at ensiling success and quality of Pearl millet and Sudangrass. Results showed both forage species had similar and comparable quality to cool-season grasses. With how much more Sudangrass produces in yield and the little difference in forage quality compared to Pearl millet, Sudangrass would make a good replacement for cool-season grasses. Pearl millet and Sudangrass can be ensiled successfully and have competitive forage quality compared to corn silage.
34

Slumpens betydelse på aktie- respektive spelmarknaden

Tang, Ching-Ho, Salomonsson, Daniel January 2007 (has links)
<p>Många berättar om de ekonomiska vinster de gjort på börsen under senaste åren, och hur lätt pengarna rullat in på deras konton. Med en liten inblick i finansmarknaden och genom att titta på A-ekonomi då och då så blir i stort sett alla aktieaffärer lyckade. Vi hör dock sällan någon berätta om folks dåliga aktieaffärer. Börsen verkar med andra ord vara en guldgruva för dem som investerar där. Med hjälp av dyra aktierekommendationer kan man göra ännu större vinster enligt en rad olika fondkommissionär. Betting är en trend som aldrig tycks ta slut. Även där påpekar spelbolagen hur lätt det är att ta hem vinster, bara man har lite kunskap blir man en vinnare. Och vem vill inte bli det?</p><p>Syftet med denna uppsats är att reda ut nämnda påstående. Är det så lätt som visa försöker påvisa att öka sina likvida medel med hjälp av en smärre aktiekunskap? Denna studie försöker visa hur det egentligen ligger till i denna fråga. Vem vinner när kunskap ställs mot slump i spel- och aktievärlden?</p><p>I denna uppsats vill vi undersöka likheterna av slumpens betydelse vid kortsiktiga placeringar i aktier och spel på multibet. Med hjälp av Random Walk-teorin vill vi se om det finns likheter mellan att köpa aktier på börsen och att spela på multibet.</p><p>För att få en bredare kunskap inom detta ämne så har vi byggt upp en teoridel i denna uppsats som tar upp elementära och relevanta grundstenar inom dessa ämnen. Det dyker upp en rad olika frågetecken under resans gång, men dessa försöker vi besvara så gott det går ännu längre fram i uppsatsen.</p><p>De slutsatser vi kommit fram till med hjälp av vår undersökning är att slumpen har en stor betydelse på aktie- respektive spelmarknaden. Men däremot tror vi inte att den tekniska och fundamentala analysen ska förkastas, den kan i viss mån vara till hjälp.</p>
35

Slumpens betydelse på aktie- respektive spelmarknaden

Tang, Ching-Ho, Salomonsson, Daniel January 2007 (has links)
Många berättar om de ekonomiska vinster de gjort på börsen under senaste åren, och hur lätt pengarna rullat in på deras konton. Med en liten inblick i finansmarknaden och genom att titta på A-ekonomi då och då så blir i stort sett alla aktieaffärer lyckade. Vi hör dock sällan någon berätta om folks dåliga aktieaffärer. Börsen verkar med andra ord vara en guldgruva för dem som investerar där. Med hjälp av dyra aktierekommendationer kan man göra ännu större vinster enligt en rad olika fondkommissionär. Betting är en trend som aldrig tycks ta slut. Även där påpekar spelbolagen hur lätt det är att ta hem vinster, bara man har lite kunskap blir man en vinnare. Och vem vill inte bli det? Syftet med denna uppsats är att reda ut nämnda påstående. Är det så lätt som visa försöker påvisa att öka sina likvida medel med hjälp av en smärre aktiekunskap? Denna studie försöker visa hur det egentligen ligger till i denna fråga. Vem vinner när kunskap ställs mot slump i spel- och aktievärlden? I denna uppsats vill vi undersöka likheterna av slumpens betydelse vid kortsiktiga placeringar i aktier och spel på multibet. Med hjälp av Random Walk-teorin vill vi se om det finns likheter mellan att köpa aktier på börsen och att spela på multibet. För att få en bredare kunskap inom detta ämne så har vi byggt upp en teoridel i denna uppsats som tar upp elementära och relevanta grundstenar inom dessa ämnen. Det dyker upp en rad olika frågetecken under resans gång, men dessa försöker vi besvara så gott det går ännu längre fram i uppsatsen. De slutsatser vi kommit fram till med hjälp av vår undersökning är att slumpen har en stor betydelse på aktie- respektive spelmarknaden. Men däremot tror vi inte att den tekniska och fundamentala analysen ska förkastas, den kan i viss mån vara till hjälp.
36

Identification of Concrete Incompatibilities Using Cement Paste Rheology

Jang, Se Hoon 2009 May 1900 (has links)
The complex interaction between cement and chemical/mineral admixtures in concrete mixtures sometimes leads to unpredictable concrete performance in the field which is generally defined as concrete incompatibilities. Cement paste rheology measurements instead of traditional workability tests (i.e., slump cone test) can have great potential in detecting those incompatibilities in concrete before the concrete is placed, which can, in turn, avoid related workability problems and setting time as well as heat evolution abnormalities. The objectives of the present study were to examine the applicability of the dynamic shear rheometer (DSR) to measure cement paste rheology, and to identify cement and mineral/chemical admixture incompatibilities, based on the determined rheological parameters. The DSR was modified and optimized for cement paste rheology measurements. Two different modes of operations (i.e., static and dynamic methods) with the modified DSR were investigated to measure representative rheological parameters as well as to identify cement and chemical/mineral admixture incompatibility. The conventional plastic viscosity and yield stress are measured in static mode and storage modulus curve, as a function of time, is measured in dynamic mode. The rate of change of plastic viscosity (RPV) as another static rheological parameter and the modeled magnitude parameter ?, from the dynamic rheological method, showed great potentialities as acceptance criteria to identify incompatible mixtures. The heat of hydration data from isothermal conduction calorimeter tests and setting time results for the studied mixtures have strongly supported the rheology based observations as supporting tools. Based on the main tests results, the acceptance criteria were set up using the rheological parameters in accordance with heat of hydration data. This will ultimately help material suppliers, concrete producers, and other users to detect problematic combinations of concrete ingredients before a given concrete mixture is placed.
37

Miško plotų didinimo galimybės Kauno apskrityje / The potential of growth of forests in Kaunas region

Grigalevičius, Tomas 15 June 2010 (has links)
Miškų plotas Lietuvoje didėja nuo XX amžiaus vidurio. Mažiausias miškingumas – 19,7% užfiksuotas 1948 metais, 2009 metais siekia 32,9%. Pagal Lietuvos miškingumo didinimo programą per 2004 – 2020 m. laikotarpį bendrą šalies miškingumą planuojama padidinti 3%. Programoje numatytos miško įveisimo apimtys, atsižvelgiant į nenašių ir žemės ūkiui nenaudojamų žemės ūkio naudmenų plotus. Norint efektyviai didinti miškingumą želdinimu arba miško žėlimo skatinimu, būtina atsižvelgti į visą kompleksą aplinkos veiksnių (ekonominių, ekologinių ir socialinių – etnokultūrinių), darančių įtaką miško želdinimui ir žėlimui, želdinių ir žėlinių augimui, būklei ir miško naudojimui mažo našumo, apleistose ir pažeistose žemėse. Planuojant miško plotų didinimą Kauno apskrityje išnagrinėta žemės valstybinės apskaitos duomenys ir išduotų leidimų įveisti mišką žemės ūkio paskirties žemėje apimtys. / The forest area of Lithuania has been increasing from the mid-twentieth century. Minimum Forest area - 19.7% recorded in 1948 and in 2009 increased up to 32.9%. According to the Lithuanian forest improvement program through 2004 - 2020 on period, the total forest country is planned to increase by 3%. The program involves the establishment of forest volume, taking into account the low-performing agriculture and farmland quantity. From 652.7 thousand. ha of agricultural land and non-life area of 163.2 thousand. hectare (30-32 performance ratings) has been proposed temporarily to preserve, and 489.5 thousand. ha of forest produce in the future is appropriate. In order to effectively increase the forest afforestation and forestry promotion Iit should be taken into account a whole range of environmental factors (economic, environmental and social - ethnographic), affecting the forest and afforestation, plantations and Zelin on growth, condition and use of low-productivity forests, abandoned and damaged lands.
38

Desenvolvimento de aparato automatizado de slump test : ferramenta de controle de qualidade e de caracterização reológica de materiais /

Pereira, João Batista. January 2018 (has links)
Orientador: Geraldo de Freitas Maciel / Resumo: O ensaio de abatimento de tronco de cone, desenvolvido inicialmente como ferramenta de controle de qualidade para avaliar a consistência de materiais cimentícios e com grande aplicação no setor da construção civil, tem sido cada vez mais empregado para análise de materiais de diferentes setores, seja da indústria do petróleo, da mineração e mesmo de alimentos. O interesse de diferentes setores industriais pela medida do abatimento deve-se a esta possibilitar uma ferramenta de controle de qualidade de materiais e ainda fornecer um mecanismo simples e fácil para a determinação de um importante parâmetro reológico, a tensão limite de escoamento. Nesse contexto, esta dissertação de mestrado apresenta o desenvolvimento de um aparato experimental capaz de realizar, de forma automatizada, o ensaio de abatimento de tronco de cone (comumente conhecido por slump test), desde o levantamento do cone de Abrams até a medição do abatimento. A partir do equipamento desenvolvido, três abordagens são realizadas e discutidas ao longo desta dissertação, tendo como materiais avaliados os géis de carbopol (fluido teste reologicamente representativo de lamas), lamas, argamassas e concretos. A primeira abordagem diz respeito a funcionalidade e operacionalidade do aparato automatizado de slump test. A segunda abordagem apresenta modelos empíricos de determinação da tensão limite de escoamento e viscosidade aparente, a partir da medida mais rigorosa de abatimento e outras informações fornecidas pelo a... (Resumo completo, clicar acesso eletrônico abaixo) / Abstract: The slump test was, initially, developed as a quality control tool for evaluating the consistency of cement-based materials, with many applications in civil engineering, it has been used for the analysis of materials in different sections of petrol industries, mining, and even food industries. The interest of these different industrial sections in the slump is due to its possible role as quality control tool of materials, providing an easy and simple mechanism for the determination of an important rheological parameter: the yield stress. In this context, this dissertation presents the development of an experimental apparatus capable of obtaining, in such automated way, the slump test, since the lifting of the Abrams cone to the obtaining of the slump. From the apparatus, three approaches are presented and discussed in this text, showing the results for the evaluation of materials such as carbopol gel (a rheological representative fluid of mud), mud, concrete and mortar. The first approach deals with the functionality of the automated apparatus for slump test. The second approach presents empiric models for the determination of yield stress and apparent viscosity, from the slump and further information obtained by the automated apparatus. The third and last approach presents the numerical simulation and validation of the slump test by the use of FLUENT software, considering the Non-Newtonian property (Herschel-Bulkley’s fluid) of the tested materials, and the trial of the mode... (Complete abstract click electronic access below) / Mestre
39

"Jag har ju inte riktigt sökt jobb – jag har mera fått". Skärningspunkter mellan slump och hårt arbete - karriärskapande för medie- och kommunikationsvetare

Mathé, Tina January 2016 (has links)
Mediernas snabba utveckling skapar en oförutsägbar arbetsmarknad och den höga konkurrens som råder på området kan bidra till ohälsa och kostnader för samhället. Den ställer också krav på att utbildningar i hög grad måste hålla sig uppdaterade för att matcha den föränderliga omvärlden. Syftet med studien är att undersöka medie- och kommunikationsvetares karriärskapande inför, under och efter examen mot de kulturella näringarna. Utifrån The Chaos Theory of Careers används begreppen strange attractor, point attractor, locus of control och phase shift som analysverktyg. Vidare används begreppen Yrkesidentitet och Socialt Kapital. Studien utgår från intervjuer med sju medie- och kommunikationsvetare.Resultatet visar att det krävs särskilda färdigheter för att konstruktivt förhålla sig till en osäker och rörlig framtid. Flera sådana används redan i olika grad omedvetet i studenternas karriärskapande. Vid sidan av att lära sig nya färdigheter behöver medvetenhet om de färdigheter som redan används utvecklas. Undersökningen visar att studenter är beredda att genom ideellt arbete ”köpa” socialt kapital för att göra sig anställningsbara. Det sociala kapitalet riskerar att gå förlorat vid en flytt, vilket talar för att fler globala samarbeten behövs. Ett större fokus på mentorskap och handledning från näringslivet är gynnsamt för både utbildning och näringsliv. Två sammanvävda faktorer är avgörande i karriärskapandet; yrkesidentitet och socialt kapital. Samarbeten mellan studievägledarstudenter och studenter inom medie- och kommunikation kan bidra till båda gruppernas utveckling. Berättande i sig kan också användas för att få syn på karriärskapande färdigheter som redan används. / Media's rapid development creates an unpredictable labour market for media and communication scientists. The competition within the work area can lead to stress and illness, which in turn leads to high costs for society. The aim of this survey is to investigate media- and communication scientists’ creation of a career before, during and after graduation. The survey is based on the following question: How have media and communication scientists created their career before, during and after a general bachelor of media and communication studies? The concepts of strange attractor, point attractor, locus of control and phase shift (from The Chaos Theory of Careers) have been used as analytic tools. Along with this, the concepts of career identity and social capital have been used. The survey is based on interviews with seven media and communication scientists.The result shows that it requires special skills to respond constructively to an uncertain future. Some of these skills are apparent, however, without the students being aware of the influence the skills have in their career building. Besides learning new skills, awareness of the skills individuals already have, is needed. The survey also shows that students work for free to gain social capital. Therefore, a greater focus from the labour market on mentoring and coaching is desirable. The social capital, connected to the original region of education, is likely to be lost for students who move to a different location. Consequently, the development of a more global cooperation between education and labour market is needed. Two interacting factors are decisive in the career creation. These are career identity and social capital. Collaborations between career counsellor students and media and communication students, may also contribute to the development of both groups. The survey has also revealed that students describing their process of creating a career can be used as a tool to help students discover career creation skills that they already use.
40

Exploration du phénomène de la stagnation des performances chez le nageur de haut niveau

Langlois-Pelletier, Nicia 04 1900 (has links)
La stagnation est un phénomène fréquent dans le domaine de la natation, bien qu’inexpliqué et incompris, pour lequel peu de solutions sont proposées. Malgré quelques recherches sur ce phénomène, notamment au baseball, la littérature sur le sujet demeure incomplète et ne permet pas de bien cerner le problème de la stagnation. Ainsi, cette étude a pour but premier d’identifier et de comprendre les causes possibles de la stagnation, les changements émotionnels, physiques et sociaux engendrés par un tel phénomène et les stratégies utilisées par les athlètes pour gérer la stagnation. Le deuxième objectif de cette étude est de jeter un regard sur l’impact de l’optimisme sur la résolution de la stagnation. Pour ce faire, des entrevues semi-structurées ont été menées auprès de onze nageurs ayant compétitionné au niveau national canadien. Les nageurs étaient divisés en trois groupes: les nageurs ayant résolu leur stagnation et qui continuent de nager, les nageurs ayant cessé la compétition de natation suite à une stagnation non résolue et ceux qui nagent encore malgré une stagnation non résolue. Les candidats sélectionnés ont complété deux questionnaires sur l’optimisme, le LOT-R et l’ASQ. L’analyse des résultats, réalisée grâce à la théorisation ancrée, a permis de déterminer un ensemble d’émotions vécues par les athlètes et d’identifier des stratégies afin de résoudre la stagnation. Les résultats de cette étude indiquent qu’une balance entre l’optimisme et le pessimisme, une motivation intrinsèque ainsi qu’une auto-détermination chez l'athlète sont des éléments importants afin de surmonter une stagnation. / Even if unexplained and misunderstood, a slump is a frequent phenomenon among high level swimmers for which few solutions are proposed. Despite some previous research especially in the sport of baseball, the literature on this topic is fairly incomplete and does not provide a complete understanding of the problem. Therefore, the primary goal of this study is to get a better understanding of the possible causes of a slump and the emotional, mental, physical and social changes generated by this phenomenon and the strategies used by swimmers in order to break through their slumps. The second goal of this study is to examine the impact of optimism on the resolution of a slump. To reach these goals, semi-structured interviews were held with eleven swimmers who competed at the national level in Canada. Swimmers were divided into three groups: swimmers who resolved their slumps and are still swimming, swimmers who stopped competitive swimming because of an unresolved slump and swimmers who are still swimming even though they are still enduring a slump. Subjects selected were also asked to complete two optimism questionnaires (LOT-R and ASQ). Data analysis, using the grounded theory, identified an emotional patterns experienced by swimmers and certain strategies used by swimmers to resolve their slump. Finally, the results of this study suggest that a balance between optimism and pessimism, an intrinsic motivation and a perception of auto-determination are important elements when trying to overcome a slump.

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