457 research outputs found
Quantitative Investigations on Herring Spawning and its yearly Fluctuations at the West Coast of Norway
SDI strategic planning using the system dynamics technique: A case study in Tanzania
Ponencias, comunicaciones y pĂłsters presentados en el 17th AGILE Conference on Geographic Information Science
"Connecting a Digital Europe through Location and Place", celebrado en la Universitat Jaume I del 3 al 6 de junio de 2014.Development of spatial data Infrastructure (SDI) is a long term process, which requires long-term plans. The complexity of SDI, which is a matter of technical, institutional and financial challenges and their interactions, makes the development of such a plan complicated. It is also generally hard to convince policy-makers about the reliability of a plan and the future effect of that to get their supports. The system dynamics technique has been shown to be a proper approach for SDI planning, responding to the above issues. This paper summarizes the application of the system dynamics technique for SDI modelling in Tanzania
Self-Service Business Intelligence: Konsekvenserna av flexibilitet
Dagens förĂ€nderliga och dynamiska marknad har lett till att organisationer tvingas vara flexibla för att snabbare kunna fatta beslut och anpassa sig. Vidare har detta lett till en förĂ€ndring inom Business Intelligence (BI), dĂ€r en nyare lösning kallad Self-Service Business Intelligence (SSBI) har vuxit fram. SSBI syftar huvudsakligen till att förbĂ€ttra beslutsfattande i organisationer genom att göra processen för beslutsfattande snabbare och ge anvĂ€ndare mer flexibilitet. Flexibiliteten ger anvĂ€ndare möjlighet att betjĂ€na sig sjĂ€lva i arbetet för att ta fram beslutsunderlag. Uppsatsen argumenterar för att den flexibilitet som SSBI Ă€r tĂ€nkt att medföra inte kommer utan oproblematiska konsekvenser. Uppsatsen presenterar teoretiska förhĂ„llningssĂ€tt till SSBI som beskriver möjligheter och utmaningar med SSBI. Teorin jĂ€mförs dĂ€refter med empiri som utvunnits frĂ„n sex intervjuer med olika leverantörer av BI-lösningar. Studien har identifierat att för att uppnĂ„ Ă€ndamĂ„lsenlig flexibilitet krĂ€vs det att datakvaliteten och tillförlitligheten sĂ€kerstĂ€lls och att adekvat utbildning ges. Uppsatsen ifrĂ„gasĂ€tter dĂ€rför begreppet âself-serviceâ eftersom den efterstrĂ€vade effekten att lĂ„ta anvĂ€ndare betjĂ€na sig sjĂ€lva inte sker utan att konsekvenserna av flexibilitet beaktas
Ett varumĂ€rke i nya klĂ€der â en studie om KappAhl; ur tvĂ„ perspektiv
SAMMANFATTNING Uppsatsens titel: Ett varumĂ€rke i nya klĂ€der â en studie om KappAhl; ur tvĂ„ perspektiv Kurs: SMTX06 â Service Management: Kandidatuppsats, 15 p Författare: Andreas Klingstedt, Philip Persson, Henrik Runnström Handledare: Szilvia Gyimothy och Pavla Kruzela Nyckelord: VarumĂ€rke, VarumĂ€rkeskapital, Positionering, Ompositionering Syfte: Syftet med denna uppsats Ă€r att öka förstĂ„elsen för hur ett svenskt detaljhandelsföretag arbetar med en ompositionering, samt att redogöra hur konsumenten uppfattar varumĂ€rket idag, och om man har pĂ„verkats av ompositioneringen. Metod: För att kunna uppnĂ„ vĂ„rt syfte och besvara de frĂ„gestĂ€llningar som vi har valt ska genomsyra vĂ„r uppsats har vi dĂ€rför valt att arbeta med insamlingsmetoder av bĂ„de kvalitativ och kvantitativ karaktĂ€r. Det empiriska materialet har samlats in, dels genom intervjuer (ledningens perspektiv) och dels genom en enkĂ€tundersökning (konsumenternas perspektiv). Teoretiska perspektiv: I vĂ„r teoretiska referensram beskrivs det moderna varumĂ€rket, samt de teoretiska begrepp och modeller för varumĂ€rkeskapital och varumĂ€rkespositionering som ligger till grund för att ett varumĂ€rke ska kunna positionera sig pĂ„ marknaden, och i konsumenternas medvetande. Empiri: I empirin redogörs resultaten av intervjuerna och enkĂ€tundersökningen som sammanstĂ€lls under rubriker som baseras utifrĂ„n vĂ„ra forskningsfrĂ„gor. Resultat: Resultatet visar att en ompositioneringprocess innebĂ€r en lĂ„ngsiktig strategisk fokusering pĂ„ varumĂ€rkets identitet, för att kunna skapa en ny position pĂ„ marknaden, och i konsumentens medvetande. Idag finns det en stor medvetenhet hos konsumenterna, som frĂ€mst förknippar KappAhl med prisvĂ€rdhet och klĂ€der för Ă€ldre. Att KappAhl har förĂ€ndrats Ă€r nĂ„got som uppmĂ€rksammats hos konsumenterna, som frĂ€mst mĂ€rkt av en högre modemedvetenhet och en föryngrad mĂ„lgrupp
The rolle of methodology and spatiotemporal scale in understanding environmental chance in peri-urban Ouagadougou, Burkina Faso
In recent decades, investigations of NPP (net primary production) or proxies here of (normalized difference vegetation index, NDVI) and land degradation in Sahelian West Africa have yielded inconsistent and sometimes contradicting results. Large-scale, long-term investigations using remote sensing have shown greening and an increase in NPP in locations and periods where specific, small scale field studies have documented environmental degradation. Our purpose is to cast some light on the reasons for this phenomenon. This investigation focuses on the south of Ouagadougou, Burkina Faso, a city undergoing rapid growth and urban sprawl. We combine long-term MODIS (moderate resolution imaging spectroradiometer) image analysis of NDVI between 2002 and 2009, and by using high resolution satellite images for the same area and a field study, we compare trends of NDVI to trends of change in different categories of land cover for a selected number of MODIS pixels. Our results indicate a strong, positive association between changes in tree cover vegetation and trends of NDVI and moderate association between man-made constructions and trends of NDVI. The observed changes are discussed in relation to the unique processes of urban sprawl characterizing Ouagadougou and relative to their spatiotemporal scale
Data-driven competitive facilitative tree interactions and their implications on nature-based solutions
Spatio-temporal data are more ubiquitous and richer than even before and the availability of such data poses great challenges in data analytics. Ecological facilitation, the positive effect of density of individuals on the individual's survival across a stress gradient, is a complex phenomenon. A large number of tree individuals coupled with soil moisture, temperature, and water stress data across a long temporal period were followed. Data-driven analysis in the absence of hypothesis was performed. Information theoretic analysis of multiple statistical models was employed in order to quantify the best data-driven index of vegetation density and spatial scale of interactions. Sequentially, tree survival was quantified as a function of the size of the individual, vegetation density, and time at the optimal spatial interaction scale. Land surface temperature and soil moisture were also statistically explained by tree size, density, and time. Results indicated that in space both facilitation and competition co-exist in the same ecosystem and the sign and magnitude of this depend on the spatial scale. Overall, within the optimal data-driven spatial scale, tree survival was best explained by the interaction between density and year, sifting overall from facilitation to competition through time. However, small sized trees were always facilitated by increased densities, while large sized trees had either negative or no density effects. Tree size was more important predictor than density in survival and this has implications for nature-based solutions: maintaining large tree individuals or planting species that can become large-sized can safeguard against tree-less areas by promoting survival at long time periods through harsh environmental conditions. Large trees had also a significant effect in moderating land surface temperature and this effect was higher than the one of vegetation density on temperature
The measurement of wind erosion through field survey and remote sensing: a case study of the Mu Us Desert, China
CO2-induced fertilization impairment in Strongylocentrotus droebachiensis collected in the Arctic
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