Search results for "GGS"
showing 10 items of 1241 documents
A new observable to measure the top-quark mass at hadron colliders
2013
A new method to measure the top-quark mass in high energetic hadron collisions is presented. We use theoretical predictions calculated at next-to-leading order accuracy in quantum chromodynamics to study the ( normalized) differential distribution of the t (t) over bar + 1-jet cross section with respect to its invariant mass root s(t (t) over barj). The sensitivity of the method to the top-quark mass together with the impact of various theoretical and experimental uncertainties has been investigated and quantified. The new method allows for a complementary measurement of the top-quark mass parameter and has a high potential to become competitive in precision with respect to established appr…
Precise measurement of the top quark mass in dilepton decays using optimized neutrino weighting
2016
We measure the top quark mass in dilepton final states of top-antitop events in proton-antiproton collisions at sqrt(s) = 1.96 TeV, using data corresponding to an integrated luminosity of 9.7 fb^-1 at the Fermilab Tevatron Collider. The analysis features a comprehensive optimization of the neutrino weighting method to minimize the statistical uncertainties. We also improve the calibration of jet energies using the calibration determined in top-antitop to lepton+jets events, which reduces the otherwise limiting systematic uncertainty from the jet energy scale. The measured top quark mass is mt = 173.32 +/- 1.36(stat) +/- 0.85(syst) GeV.
Food and Environment: Trace Element Content of Hen Eggs from Different Housing Types
2013
AbstractEleven trace elements (Ba, Cu, Fe, Mn, Ni, Pb, Rb, Se, Sr, V, Zn) were quantitatively determined in hen egg samples collected from different poultry housing types (large-scale poultry farms, organic farms and domestic farms) over the territory of Latvia. Samples were wet digested and quantitatively analysed by total reflection X-ray fluorescence spectrometry (TXRF). The accuracy of analytical method was verified with analysis of certified reference material NCS ZC73017 (GSB-10)-Apple. The most variable range of concentrations and the highest content of elements were determined for hen egg samples derived from organic farms, while egg samples from domestic farms and poultry farms mos…
Kontraktsform i veiprosjekter og forutsetninger for effektiv veibygging : En casestudie av prosjekteringsprosessen for ny E18 Tvedestrand - Arendal
2017
Masteroppgave industriell økonomi og teknologiledelse IND590 - Universitetet i Agder 2017 Kontekst: Nye Veier AS ble opprettet av Samferdselsdepartementet våren 2015 som et resultat av erfaringer hentet fra Sverige og deres gjennomføring av veiprosjekter. Hensikten var å legge til rette for bruk av totalentrepriser for å redusere byggetid og kostnader i norsk veibygging. Departementet vurderte det mulig å gjennomføre utbygging, vedlikehold og drift av deler av riksveinettet mer effektivt, gitt en annen organisering og andre rammebetingelser enn det Statens vegvesen har. Formålet er å oppnå en mer helhetlig utbygging og større kostnadseffektivitet for den utbyggingsporteføljen selskapet har …
Muligheter og utfordringer i veiprosjekter ved bruk av Best Value Procurement i kombinasjon med totalentreprise : En casestudie av Nye Veier prosjekt…
2018
Masteroppgave industriell økonomi og teknologiledelse IND590 - Universitetet i Agder 2018 Nye Veiers project E18 Rugtvedt-Dørdal is the first project in Norway to use the procurement method Best Value Procurement. The project is carried out as a Design-Build contract, which also is fairly new in the road construction industry. The purpose of this thesis is to reveal how Nye Veiers new project execution model has influenced the project execution phase, regarding cooperation, constructability and customer value. This will be discussed in the context of theories regarding transaction costs, the principal-agent problem, network in value chains and learning. The study is based on an abductive ap…
Overgangen fra utførelsesentreprise til totalentreprise for veiprosjekter : Virkninger på tid, kost og kvalitet. En casestudie av ny E18 Tvedestrand …
2018
Masteroppgave industriell økonomi og teknologiledelse IND590 - Universitetet i Agder 2018 Nye Veier ble opprettet våren 2015, på bakgrunn av Samferdselsdepartementets ønske om effektivisering av utbygging, drift og vedlikehold av riksveinettet. Nye Veier har som mål å være en slank byggherre organisasjon, som skal «bygge gode veier raskt og smart». Effektiv prosjektgjennomføring skal blant annet oppnås med bruk av totalentrepriser. Formålet med denne oppgaven er å belyse Problemstillingen: hva er virkningen av overgangen fra utførelsesentreprise til totalentreprise på samferdselsprosjekter, med hensyn til måloppnåelse. Oppgaven er skrevet som en casestudie, med E18 Tvedestrand – Arendal som…
Conceptual design of a concrete staircase based on topology optimization : A feasibility study on the development and application of topology optimiz…
2021
Master's thesis in Civil and structural engineering (BYG508)
Sustainability assessment of an apartment building containing reinforced concrete or cross-laminated timber (CLT)
2019
Master's Thesis Civil and Constructional Engineering BYG508 - University of Agder 2019 Today, the construction industry contributes to40% of the world’s energy consumption and greenhouse gasemissions(GHGs). According to theIntergovernmental Panel on Climate Change’s(IPCC)report, the greenhouse gas emissions must be reduced by 40-50 percent to limit Global Warmingto 1.5 degreesrather than 2 degreesby 2030. The United nation’s (UN)SustainabilityGoals are the world's common work plan to stop climate change by 2030. To achieve the above goals, it is crucial for the construction sectors to look forbetter,alternative construction materials as top concern to sustainability and environmental issues…
Transition to a fossil- and emission-free construction industry
2018
Master's thesis Industrial Economics and Technology Management IND590 - University of Agder 2018 The object for this thesis is to see how Nettpartner, which is Norway’s largest electrical infrastructure contractor, can contribute to the green change in the construction industry. To go green has become a big topic in the Norwegian construction industry during the last few years, and in 2017 a report concluded that the Norwegian construction industry could reduce their emissions of greenhouse gases with close to 99 % if the industry planned better before they started building. The method used in this research is the constructive research. The aim of constructive research is to solve practical…
Implementering av maskinsyn for montering av fasadeplater
2017
Masteroppgave i mekatronikk MAS500 - Universitetet i Agder 2017 The construction industry has seen a surge in efficiency and automation solutions in recent years. MacGregor, in cooperation with the University of Agder want to use crane and lifting technology to streamline construction processes. Facade panels are widely used due to ease of installation and require minimal maintenance. The process associated with installation has an automation potential. This thesis looks at the implementation of machine vision for installation of facade panels. Installation is done using a ABB IRB6600 industrial robot and a vacuum tool. The machine vision is based on OpenCV and C++. The main components of t…