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The fundamental energy cost of irreversible computing is given by the Landauer bound of kTln 2 /bit, where k is the Boltzmann constant and T is the temperature in Kelvin. However, this limit is only achievable for infinite-time processes. We here determine the fundamental energy cost of finite-time parallelizable computing within the framework of nonequilibrium thermodynamics. We apply these resul
This master thesis is carried out in collaboration with the company Scania which is a provider of transport solutions. The thesis is carried out at Scania’s production unit Engine Assembly where engines are assembled, tested and painted. All engines proceed through a standard test procedure while some of the engines also proceed through special test procedures carried out in the ”Audit Area”. The
Popular Abstract in Swedish Den här avhandlingen handlar om hur kristaller, som innehåller en liten mängd av ämnen tillhörande gruppen sällsynta jordartsmetaller, kan användas för forskning och tillämpningar rörande kvantinformation. Genom att belysa kristallerna med laserljus kan atomernas tillstånd styras och studeras. I avhandlingen diskuteras olika aspekter av hur de sällsynta jordartsatomer sThis thesis describes investigations of the use of cryogenically cooled rare-earth-ion-doped crystals for quantum information processing and quantum optics. Several aspects of the coherent interaction between light and rare-earth ions in solids are addressed. Quantum information science has given physicists new views of quantum mechanics. The transmission of quantum states has already found pract
Policy for green growth and system innovation 1Advanced Programme for a National Innovation System POLICY FOR GREEN GROWTH AND SYSTEM INNOVATION CONTEXT The Nordic countries are among the forerunners in the transition to sustainable and prosperous societies, however, the severity of global warming and other grand challenges such as the biodiver- sity crisis makes it essential to maintain and stren
The Sun | Vattenhallen Science Center Skip to main content This site uses cookies to enhance the user experience. By continuing to use the site you agree that cookies are used according to our Cookie Policy (on the website of LTH) . Essential cookies These cookies are necessary for the website to function and cannot be turned off in our systems. These cookies do not store any personally identifiab
https://www.vattenhallen.lu.se/english/the-planetarium/shows-in-english/the-sun-our-living-star/ - 2026-07-05
1999 G. Gustafson and G. Miu Minijets and Transverse Energy Flow in High Energy Collisions LU TP 99-43, hep-ph/0002278 (submitted to Physical Review D) [ abs, ps ] T. Sjöstrand Recent Progress in PYTHIA LU TP 99-42, hep-ph/0001032 (to appear in The Proceedings of the QCD and Weak Boson Physics workshop in preparation for Run II at the Fermilab Tevatron) [ abs, ps ] G. Amoros, J. Bijnens, P. Talave
https://www.particle-nuclear.lu.se/tpp/publications/theoretical-particle-physics-publications-1992-1999 - 2026-07-03
The Department of Sociology's dissertations from 1997 back to the very first in 1971 Below you will find a list of doctoral theses (dissertations) in sociology, social anthropology and pedagogy that are not be available in the Lund University Research Portal. Cuesta, Marta Flowers to the Ocean: A Study of Everyday Practices, Rituals and Identity in Candomble (1997) Carleheden, Mikael Det andra mod
https://www.soc.lu.se/en/doctoral-theses-1997-1971 - 2026-07-03
In the present work, a downscaled prototype 4th generation Dry Low Emission gas turbine (SGT-750) burner (designed and manufactured by Siemens Industrial Turbomachinery AB, Sweden) was investigated using an atmospheric experimental facility. The primary purpose of the research is to analyze flame stability and emission capability of the burner. OH Planar Laser-Induced Fluorescence (OH-PLIF), and c
Recent advances in laser technology, with the development of extremely short-pulse, high-intensity lasers, have opened doors to new areas in atomic physics. By focusing light from an intense, short-pulse laser into a gas jet, the emission of high-order harmonics of the laser frequency has been studied. The aim of this work has been two-fold: to better understand the underlying physics of the harmo
Popular Abstract in Swedish Ekonomiska och miljömässiga problem gör det svårt att bygga ut kraftledningsnätet i samma takt som efterfrågan på elenergi ökar. Ett alternativ är att öka belastningen av befintliga kraftledningar på bekostnad av de säkerhetsmarginaler som finns. En av flera dimensionerande faktorer är risken för otillräckligt dämpade effektpendlingar mellan generatorer i kraftsystemet.Environmental and economical aspects make it difficult to build new power lines and to reinforce existing ones. The continued growth in demand for electric power must therefore to a great extent be met by increased loading of available lines. A consequence is that power system damping is reduced, leading to a risk of poorly damped power oscillations between the generators. This thesis proposes the
Popular Abstract in Swedish Hos järnvägsfordon ger den låga friktionen mellan hjul och räls upphov till långa bromssträckor, i allmänhet längre än lokförarens siktsträcka. Om föraren påbörjar en inbromsning först när han ser ett hinder på spåret kan det vara för sent. Säker järnvägstrafik kan därför inte enbart lita till föraren, utan det måste också finns ett överordnat signalsystem, ofta i kombiIn railway traffic the low friction between wheel and rail causes long braking distances, normally much longer than the sight distance of the driver, i.e. if the driver starts the braking when a problem on the track is discovered, it might be too late to brake the train. Therefore, safe railway traffic can not only rely on the driver. It is necessary to have a signalling or even an automatic surve
Val som görs tidigt i en designprocess kan vara avgörande. De dikterar många av de begränsningar och friheter som konstruktörer har i senare skeden av processen. Informerade beslut är därmed viktiga i detta skede. Med den ökande beräkningskraften hos moderna datorer använder fler och fler konstruktörer CFD-programvara för att utforma och utvärdera prestanda hos turbopumpar. Simuleringarna gör det Choices made in the early stages of a design process are crucial. They dictate many of the limitations and freedoms the designer has in later stages of the design. Informed decisions are therefore crucial at this stage. With the increasing computational power of modern computers, more and more designers utilise CFD software to design and evaluate performance of turbopumps. The simulations allow th
En tredjedel av maten vi produceras slängs, mat som har tagit resurser och landyta i anspråk för att bli till. För att få bukt med det globala matsvinnet har FN satt ett hållbarhetsmål att halvera matsvinnet inom mathandel och hushåll till 2030. En faktor som kan kopplas till matsvinn är förpackningar. När de används korrekt förhindrar förpackningar matsvinn genom att ge skydd och ökad hållbarhet,Globally, about a third of the food produced is wasted. To address this issue, the United Nations has set a sustainability goal of reducing food waste in retail and household by 50\% to 2030. One factor that can be connected to the generation of food waste is packaging. When applied correctly, packaging prevents waste by providing protection and shelf life, but when packaging does not meet consume
Durable block copolymers combining ionic and non-ionic blocks hold a great promise as membrane materials in next-generation fuel cells and batteries. With a proper macromolecular design, these copolymers self-assemble to form ordered nanostructures in which ion and water transport is facilitated over a wide range of conditions. For example, membranes based on sulfonated block copolymers typically
Ultrashort, coherent light pulses in the extreme ultraviolet (XUV) wavelength region are excellent tools for a wide range of experiments. These XUV pulses are in particular used to characterize electron dynamics. Additionally, the high photon energy enables quantum control of short-lived transitions in atoms. These transitions are of interest for ultrafast quantum control as the bandwidth of the c
The COVID-19 pandemic has illuminated the lack of knowledge regarding the airborne transmission pathway of disease. The pathway consists of pathogens contained in small particles ejected when speaking and coughing. A crucial characteristic of these particles is their size that is connected to the their suspension longevity in the air as well as the location of generation and deposition within a su
Metal halide perovskites have garnered significant attention for their remarkable optoelectronic properties and unique photophysical characteristics. Combined with low cost for fabrication, this new class of materials is among the most promising candidates within next generation photovoltaic technologies. However, the complex nature of metal halide perovskites' crystal structures and compositions
NanoLund Annual Report, 2020. NanoLund ANNUAL REPORT | 2020 Photo: Charlotte Carlberg Bärg REAL & VIRTUAL – AN UNEXPECTED YEAR......................................................................................................3 THIS IS NANOLUND............................................................................................................................................4 2020 IN BRIE
https://www.nano.lu.se/sites/nano.lu.se/files/2021-06/%C3%85rsrapport_NanoLund_2020_TA_reduced.pdf - 2026-07-05
Annual report_2016_IIIEE_.pdf ADVANCING SUSTAINABLE SOLUTIONS ANNUAL REPORT 2016 The IIIEE by numbers in 2016 Publications 44 37 Masters students 93 on campus (147 on campus and distance) Masters graduates 850+ people from 90+ countries (21 researchers, 11 PhD students, 9 administration, guest researchers) Staff 40+ Participants in MOOCs 52,500 56,000 Research projects 30 (137,000 in total) Downlo
https://www.iiiee.lu.se/sites/iiiee.lu.se/files/annual_report_2016_iiiee_web_version.pdf - 2026-07-05
