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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.
271

The Effectiveness of the Hybrid Graphical Representation Method in Visually Combining and Communicating Logical and Spatial Relationships between Scheduled Activities

Nageeb, Meena 2012 May 1900 (has links)
This research endeavor investigated the possibility to combine the visual advantages of both graphical schedule visualization methods, the Linked Gantt Charts (LGC) and Flowline graphs (FLG), derived from the activity-based and location-based scheduling systems, to help resolve some of their shortcomings by capitalizing on their combined strengths. In order to accomplish the goal of the research, a graphical representation system that combines these two scheduling visualization methods, LGC and FLG, is developed. Afterwards, the research attempted to empirically validate the ability of the proposed tool to visually communicate and combine logical and spatial relationships between scheduled activities. This is compared to comprehending the same information by looking at a stand-alone LGC or FLG. The accuracy and time, of deciphering various details of a sample project schedule, are used as parameters to evaluate the proposed scheduling visualization tool, and compare it to the existing LGC and FLG systems. The Hybrid Graphical Representation (HGR) is the tool developed by this research to combine Linked Gantt Chart bars from the activity-based scheduling approach, and flow-lines from the location-based scheduling approach. The HGR concept is founded on the basic idea that both LGC and FLG share a common X-axis, Time. The only difference is in a LGC the Activities are listed on the Y-axis, while the FLG shows Locations on the Y-axis. This research proposed adding a third dimension to the FLG, listing the project Activities on a Z-axis. Viewing the HGR 3D graph from the top, the user will observe the Gantt bars with Time on the X-axis and the Activities listed on the Z-axis. Observing the schedule from the front view, the user will see the flow-lines developed from the location-based scheduling approach with Locations on the Y-axis and Time on the X-axis. After conducting a series of online surveys measuring the time and accuracy of using a prototype HGR schedule, it was found that the users were able to reap the benefits of both scheduling approaches (LGC and FLG), and visually link and communicate information concerning the activities' logical relationships and spatial relationships. However, it took the participants a relatively longer time to achieve that higher accuracy utilizing the HGR tool.
272

An assessment tool for the appropriateness of activity-based travel demand models

Butler, Melody Nicole 13 November 2012 (has links)
As transportation policies are changing to encourage alternative modes of transportation to reduce congestion problems and air quality impacts, more planning organizations are considering or implementing activity-based travel demand models to forecast future travel patterns. The proclivity towards operating activity-based models is the capability to model disaggregate travel data to better understand the model results that are generated with respect to the latest transportation policy implementations. This thesis first examines the differences between the two major modeling techniques used in the United States and then describes the assessment tool that was developed to recommend whether a region should convert to the advanced modeling procedures. This tool consists of parameters that were decided upon based on their known linkages to the advantages of activity-based models.
273

Modellutveckling och kostnadsanalys vid sortimentsexpansion på Staples Sweden AB : Vägen mot miljonen

Lindqvist, Emil, Jönsson, Johan January 2013 (has links)
Bakgrund:                   För att stärka sin position på marknaden önskar Staples Sweden AB utöka sitt artikelsortiment till att omfatta 1 000 000 artiklar. För att möjliggöra sortimentsexpansionen behövs beslutsunderlag rörande hantering och kostnadsstruktur identifieras. Syfte:                          Syftet med studien är att utveckla en modell vid val och utformning av distributionssätt för att föreslå en distributionsslösning. Syftet är också att genom en kostnadsanalys identifiera orderkostnadsstrukturen för den föreslagna distributionslösningen. Metod:                        Vid genomförandet av studien tillämpades en fallstudiedesign. Det empiriska materialet samlades in genom intervjuer utförda på Staples Sweden AB. Slutsats:                      Vid tillämpningen av modellen som utvecklades i studien framkom att distributionslösningen ska utgöras av direktleveranser, konsoliderade direkleveranser, ”cross-docking”, ”cross-docking” med buffert och traditionell lagerhållning. Orderkostnaden skiljde sig mellan distributionssätten där ”cross-docking” var billigast och direktleveransvarianterna var dyrast. / Background:               To strengthen its position on the market, Staples Sweden AB seeks to expand its product range to include one million articles. The problem is that no one in the company knows how such a variety of items should be managed and how the structure of order costs would change. Based on these problems, the task for the study arose. Purpose:                      The thesis aims to develop a model for the selection and design of distribution methods for proposing a solution that can manage one million articles. It also aims to identify the structure of order cost for the proposed solution through a cost analysis. Methodology:             The study was conducted by applying a case study design. The empirical data were collected through interviews conducted at the Staples Sweden AB. Conclusion:                 In the application of the developed model showed that the distribution solution should consist of direct shipping, consolidated direct shipping, cross-docking, cross-docking with buffer and traditional warehousing. Order cost differed between distribution where "cross-docking" showed to be the cheapest and direct shipping variants were the most expensive.
274

Vers une nouvelle socio-géographie de la mobilité quotidienne. Étude des mobilités quotidiennes des habitants de la région urbaine de Grenoble

Tabaka, Kamila 10 September 2009 (has links) (PDF)
Au prisme de la diversité des pratiques spatio-temporelles, la mobilité constitue sans contestation l'élément majeur des relations sociales contemporaines. Si les pratiques spatio-temporelles et les formes des mobilités quotidiennes sont loin d'être homogènes, comment peut-on pour autant les décrire, les qualifier et les rendre plus compréhensibles ? L'échelle la plus adéquate pour analyser ces comportements peut être celle de l'aire métropolitaine car c'est en effet un espace qui résulte de ces mobilités et dans lequel s'inscrit la majorité des mobilités urbaines d'aujourd'hui. Cette thèse tend à établir une lecture de l'hétérogénéité de l'espace métropolitain grenoblois et de ses organisations, à travers l'analyse des pratiques des mobilités quotidiennes. Une meilleure connaissance et représentation des comportements de la mobilité quotidienne dans l'espace-temps constitue le coeur de sa problématique. La motivation essentielle de ce cadrage est la prise en compte de l'individu dans le contexte de mobilité qui lui est propre, avec toutes ses dimensions particulières. Une démarche originale vise à rendre possible une lecture et une analyse des mobilités et des activités ainsi que des disparités en cours, à travers une grande base de données quantitatives, l'enquête ménages déplacements (EMD 2002 sur la région grenobloise). Il s'agit d'une analyse secondaire des données d'un outil majeur des politiques publiques locales et qui n'a pas été utilisé jusqu'à présent pour analyser les formes des mobilités quotidiennes.
275

Développement d'une sonde de photoaffinité pour la détection sensible de formes actives de Métalloprotéases Matricielles dans des systèmes biologiques complexes

Nury, Catherine 26 November 2012 (has links) (PDF)
Le développement d'une nouvelle sonde dite " activity-based probe " pour réaliser la détection de formes actives de protéases appartenant à la famille des protéases à zinc de la matrice (MMP) a été réalisé dans ce travail, en partant d'un inhibiteur phosphinique puissant des MMP dans lequel a été introduit un groupement photoactivable de type diazérine. Ce composé se révèle un inhibiteur puissant de plusieurs MMP avec des affinités nanomolaires. Ce composé incubé avec différentes MMP est par ailleurs capables de modifier de façon covalente un grand nombre de MMP au niveau de leur site actif, avec des rendements de modification variant de plus de 50% à 11%, selon la nature des MMP. En ayant choisi comme moyen de détection la radioactivité, nous démontrons qu'avec cette nouvelle sonde qu'il est possible de détecter des formes actives de MMP avec des sensibilités de l'ordre de la femtomole dans des systèmes modèles de protéomes complexes. Appliquée à l'analyse de lavages broncho alvéolaires de souris traitées par voie pulmonaire avec des nanoparticules pour induire une réponse inflammatoire, cette nouvelle sonde permet de mettre en évidence la présence de formes actives du domaine catalytique de la MMP-12, une métalloprotéase à zinc exprimée par les macrophages, mais pas dans les animaux contrôles. En revanche l'analyse de carotides humaines de patients souffrant d'athérosclérose ne nous pas conduit avec cette sonde à la détection de formes actives de MMP. Malgré ce résultat, il est à noter que la détection de forme active de MMP dans un fluide pathologique est une première dans ce domaine. Cette sonde étant validée pour sa capacité à détecter des formes actives de MMP, elle permettra dans l'avenir de tester d'autres fluides pathologiques d'origine humaine ou bien des extraits de tissu comme des tumeurs pour lesquels les MMP pourraient être des marqueurs de ces pathologies.
276

Proveniensprincipen i den verksamhetsbaserade arkivredovisningen / The Principle of Provenance in the time of the activity-based archival description

Wiberg, Lina January 2012 (has links)
In this essay I seek to examine how the Principle of Provenance can be discerned in the new activity-based wayof establishing an archival description. In which terms do authors of reports and works about archival descriptionspeak about provenance. Do they at all?In order to do so I have studied the history of the Principle of Provenance and what is to be its future – theregulation from the Swedish National Archives, RA-FS 2008:4. I have also read the referrel that was sent out toSwedish authorities, universities and other archival institutions. This to see how the referrel and the new ways ofarchival description was recieved, and also what was to be changed. To get a more extensive grip on the matter itwas necessary to read up on international standards on archival description, such as ISAD(G) and ISAAR(CPF),and standards for records management. How do they fit in to the activity-based archival description?
277

An activity based method for sustainable manufacturing modeling and assessments in SysML

Romaniw, Yuriy 06 July 2010 (has links)
Traditionally, environmental impacts of man made products have been determined by performing a life cycle assessment (LCA) on the product. As the name implies, LCA is usually covers the entire life of the product in a so-called "cradle-to-grave" assessment. In determining environmental impacts over the whole product life, LCA's are reasonably adequate. However, in providing detailed impacts on a particular phase of life, LCA's are lacking. Detailed assessments are important because very few stakeholders have influence over a product during all phases of life. Stakeholders need detailed impact assessments in their particular phase of life. More detailed assessments give stakeholders more information that can be used for better environmental management (EM) and more environmentally benign operations. In many LCA's, the manufacturing phase of life has been over-generalized and over-simplified because of its relatively small environmental impact, as compared to other phases of life. Nevertheless, certain stakeholders, such as manufacturing companies, need detailed impact information for the manufacturing phase of life so that they can create a more sustainable manufacturing process. Most traditional LCA's use a case-based approach, which was deemed to be inadequate. For these LCA's, the information provided for each case is often quite detailed and specific. However, this makes the assessment less flexible, limiting the quality of the assessment to the degree that the current scenario matches the existing cases. In order to make a more user-specific assessment, a model-based approach was used. To give the model flexibility, a parametric model was created based on mathematical equations that represent various parts of the manufacturing process. To give the model structure, an activity-based costing (ABC) approach was used. Using the ABC structure, the manufacturing process was broken down into activities, each of which was characterized by mathematical models. Large models would be difficult to construct and simulate by hand, so a model was built with the aid of a computer. The modeling language SysML (Systems Modeling Language) was used to create an object-oriented model of the manufacturing process, using the ABC structure. SysML defines overall properties and behaviors of the various elements in the model, while the plug-in tool ParaMagic was used to execute the model via a Mathematica Solver. The model computes carbon dioxide emissions, energy consumption, and waste mass generation for a particular manufacturing scenario. The goal of the model was to quantify environmental impact factors in order to aid manufacturing stakeholders in EM. The overall goal of the research was to determine whether an activity-based, object-oriented model was a valid approach, and whether the computer-aided tools adequately implemented this approach. Findings show that SysML is capable of modeling large and complex systems. However, due to some limitations of Paramagic, only some of SysML's capabilities were utilized. Nevertheless, Paramagic is capable of extracting information out of a manufacturing model built in SysML, and solving parametric relations in Mathematica in a timely manner. Timely solutions of complex models are critical for stakeholders keeping a competitive edge.
278

Development of hybrid lifecycle cost estimating tool (hlcet) for manufacturing influenced design tradeoff

Sirirojvisuth, Apinut 21 May 2012 (has links)
In complex aerospace system design, making effective decision requires knowledge from all disciplines, both product and process perspectives. Manufacturing knowledge integration is most valuable during the early phase of the design since designers have more freedom, and design changes are relatively inexpensive. Yet, there is still lack of structured methodology that will allow feedback from the process perspective to show the impact of the design decisions in a quantifiable manner. The major metrics in the design decision as far as process is concerned are cost, time, and manufacturability. To incorporate these considerations in the decision making process without sacrificing agility and flexibility required during conceptual and preliminary design phases, a new set of software analysis tools are proposed. To demonstrate the applicability of this concept, a Hybrid Lifecycle Cost Estimating Tool (HLCET) is developed, and integrated to existing design methodology, Integrated Product and Process Development (IPPD). The ModelCenter suite is used to develop software architecture that seamlessly integrate between product and process analysis tools, and enable knowledge transfer between design phases. HLCET integrates high fidelity estimating techniques like process-based and activity-based into a hierarchical lifecycle cost model to increase the sensitivities of the top-down LCC model to changes or alternatives evaluated at the part or component level where tradeoff is required. Instead of applying arbitrary complexity factor to existing CERs to account for difference material or process selection, high fidelity tool can be used to related product and process parameters specific to the design to generate new result that can then be used to update top-level cost result. This new approach to lifecycle cost estimation allows for a tailored study of individual processes typically required for new and innovative designs. An example of a hypothetical aircraft wing redesign demonstrates the utility of HLCET.
279

Är budgetering tillfredsställande i svenska storföretag? : Kvantitativ studie / Is budgeting satisfying in large Swedish corporations? : Quantitative study

Christensson, Linda, Dahlin, Susanne January 2015 (has links)
Studiens syfte var att undersöka hur svenska storföretag ser på sitt arbete med budget som ekonomistyrningssystem. Tidigare forskning indikerar på att trots den omfattande kritik som finns mot budget så tenderar företag att inte instämma i den. Kritikerna hävdar, bland många saker, att budgeten skulle vara resurskrävande, inflexibel, inaktuell och ge upphov till manipulering. Alternativet, menar de mer radikala kritikerna, skulle vara att överge budget och arbeta fullständigt med alternativa lösningar. Empiriska studier visar att budget används av företagen men förbättras och omvärderas med tiden för att anpassas bättre till verksamheten. Tidigare forskning har visat att de alternativ som förespråkas i budgetlös styrning inte förutsätter att budgeten överges för att bli användbara. Tidigare studier om företags inställning till budgetering har gjorts i bland annat Nederländerna och Nordamerika. Det finns alltså ingen studie som mäter svenska företags inställning. Svenska företag utmärker sig dels genom kulturen men framförallt genom att annorlunda ledarskap. Komplexiteten i storföretag har för den här studien inneburit att urvalsgruppen att undersöka blev svenska storföretag. Urvalsgruppen undersöktes genom ett oberoende slumpmässigt urval. Det positivistiska synsättet har lett till ett kvantitativt tillvägagångssätt med enkät som verktyget för att nå populationen. Populationen svenska storföretag utgjordes 2013 av 1850 företag och vårt stickprov bestod av 250 företag. Genom att jämföra stickprovet i den här studien mot hela populationen kunde vi konstatera att omsättning och antal anställda inte avviker nämnvärt mellan grupperna. En bortfallsanalys utfördes mellan respondenterna som svarade innan och efter att en påminnelse skickats ut och resulterade i statistiskt säkerställda resultat där grupperna svarade homogent. Majoriteten av storföretagen arbetar med budgetering. Resultaten baserades på 41 respondenters svar och kan i en hög grad sägas vara statistiskt säkerställda. Det finns några påståenden där en alltför stor osäkerhet finns men slutsatsen blir utifrån de statistiskt säkerställda resultaten att budgeten är här för att stanna. Budgetens syfte är att skapa ekonomisk överblick och den förbättras och kompletteras med hjälp av de verktyg som budgetlös styrning förespråkar. Kritiken kunde i stor utsträckning förkastas. Vi tror att vidare forskning handlar om ett kvalitativt tillvägagångssätt för samma population eller ett byte av målgrupp men med liknande forskningsfråga för att se om mindre företag delar storföretagens åsikter om budget. / The purpose of this study was to examine large Swedish corporations approach on their budgets as management control systems. Recent research indicates that corporations tend to disagree with the widespread criticism against budgeting. Critics claims, among many other things, that the budget is costly, inflexible, outdated and give rise to manipulation. The more radical critics argue that the alternative would be to abandon the budget and work completely with alternative solutions. Resent research indicates that corporations are still working with budgeting but with an improved version that is re-evaluated over time to adapt better to the business. Another important aspect that previous research shows was that the preferred option in beyond budgeting does not require the budget to be totally abandoned to become useful. Previous studies on corporations attitude towards budget were made, inter alia, in the Netherlands and North America. Thus, there was no study that measured the Swedish corporate attitude towards budgeting. Swedish corporations distinguish themselves partly by culture but mostly by their leadership. The selection group in this study was based on the complexity of large corporations. We examine the population by an independent random sample with a positivistic view. That means a quantitative approach with survey as a tool to reach the population. In 2013 the population of large Swedish corporations consisted of 1850 corporations. By comparing the sample in this study to the entire population, we found that turnover and number of employees does not differ significantly between the groups. A non-response analysis was performed between respondents who answered before and after a reminder were sent out and resulted in statistically reliable results where groups responded homogeneously. The majority of large corporations are currently working with budgeting. This results includes answers from 41 respondents' and in a largely, it is to be said, statistically significant. There are some statements in which too much uncertainty exists but the conclusion was based on the statistically significant findings that the budget is here to stay. The budget aims to create economic overview and is improved and supplemented with the help of the tools beyond budgeting advocates. Largely the criticism could be rejected as false. We believe that further research examine budgeting through a qualitative approach to the same population or a change of the population but with similar research question to see if the smaller corporations share larger corporations' opinion about budgeting.
280

Aktivitetsbaserade kommuner : nödvändighet eller fluga? / Activity based workplace for municipalities : necessity or trend?

Johansson, Emma January 2015 (has links)
Syftet med studien var att försöka förstå faktorerna och motiven bakom kommunernas övergång från cellkontor till aktivitetsbaserade kontorslösningar. För att se vad som har påverkat beslutet om övergången och för att se hur kommunerna har gått till väga under processen mot införandet av den nya kontorsformen. / The purpose of the study was to create an understanding of the factors and motives behind the municipal transition from cellular offices to an activity based workplace. To see what influenced the decision about the transition and to see how the municipalities proceeded in the process of the new form of office.

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