Filtyp
Professor Kontaktinformation E-post: tomas [dot] hellstrom [at] fek [dot] lu [dot] se Telefon: +46 46 222 80 27Organisation Strategi Rumsnummer: Alfa 5,6 rum B423 Hämtställe: 10 WebbplatsTomas Hellströms profil i Lunds universitets forskningsportalAndra roller Facklig förtroendeman ST vid Lunds universitet Professor CIRCLE Publikationer Visar av publikationer. Sorterade efter år och sen titel. Fil
https://www.ehl.lu.se/tomas-hellstrom - 2026-05-15
The food processing industry is integral to modern society, with increasing demands for efficiency and sustainability. Industrial food freezers, such as the JBT Marel’s GyroCompact spiral freezer, are energy-intensive systems operating for extended durations daily, making energy efficiency improvements critical both economically and environmentally. This thesis aims to develop a vision-based monit
This paper analyzes the existence of market power on the Nordic electricity market between 2018-2022, and if the energy market turbulence caused by covid-19, and later deepened following the war in Ukraine affected producers' bidding behavior. Market power was tested using Cournot assumptions to see if producers withheld output strategically when demand was more inelastic. Auction data on syst
This Master’s Thesis has shown possible applications of genetic optimization algorithms (GA) within design. A framework for structural optimization with genetic algorithms was built and used to show the possibilities of using GA to create concept designs given just the boundary conditions and requirements of a structure. A comparison between the optimization of the load bearing beam of an automate
The study investigates explicit and implicit knowledge of article semantics in 26 second language learners of English. Their first languages, Russian and Belarusian, lack articles. The research question is whether explicit knowledge, operationalised as an ability to explain what principle governs the choice between the definite and the indefinite article in a multiple-choice test, is associated wi
Parrondo’s Paradox and Epistemology – combining two faulty strategies to get good results PARRONDO’S PARADOX AND EPISTEMOLOGY – WHEN BAD THINGS HAPPEN TO GOOD COGNIZERS (AND CONVERSELY) Fredrik Stjernberg Philosophy, Linköping University frest@irk.liu.se ABSTRACT: According to Parrondo’s Paradox, there will be cases where a subject facing two probabilistically losing strategies has a probabilistic
https://www.fil.lu.se/hommageawlodek/site/papper/StjernbergFredrik.pdf - 2026-05-15
Lead-free layered double perovskite nanocrystals (NCs), i.e., Cs4M(II)M(III)2Cl12, have recently attracted increasing attention for potential optoelectronic applications due to their low toxicity, direct bandgap nature, and high structural stability. However, the low photoluminescence quantum yield (PLQY, <1%) or even no observed emissions at room temperature have severely blocked the further deve
Decision trees constructed by ID3-like algorithms suffer from an inability of detecting instances of categories not present in the set of training examples, i.e., they are discriminative representations. Instead, such instances are assigned to one of the classes actually present in the training set, resulting in undesired misclassifications. In this report, twomethods of reducing this problemby le
Scania, the dangerous peninsula. History, identity and ideology 1865 to 2000 This dissertation deals with the organized written history of Scania 1865 to 2000 and the intersection of history, identity and ideology. Under what circumstances were the history produced and circulated? What was its significance for identity and ideology alike? The theoretical and analytical inspiration is drawn from P
In March 2020, the higher education sector was massively disrupted by [Coronavirus Disease 2019] COVID-19. While most universities run online programmes successfully informed by a wealth of research into online learning and teaching, many universities focus their energy and resources on educating and interacting with students on-campus. The technological changes of the past two decades have enable
The free energy of interaction between two nanometric clay platelets immersed in an electrolyte solution has been calculated using Monte Carlo simulations as well as direct integration of the configurational integral. Each platelet has been modeled as a collection of charged spheres carrying a unit charge-the face of a platelet contains negative charges, and the edge, positive charges. The calcula
We propose a conceptual model to explain the variation in species richness in local communities and in build-up of regional species pools over time. The idea is that the opportunity for new species to enter a community (its invasibility) determines the present richness of that community as well as the long-term build-up of a species pool by speciation and migration. We propose that a community's i
Den här uppsatsen syftar till att ur ett rättsutvecklingsperspektiv redogöra för och diskutera framväxten av det internationella brottet folkmord (genocide). Raphael Lemkin myntade 1944 begreppet genocide. Han hade då också en genomtänkt definition av vad begreppet behövde innebära för att omfatta de illdåd som utförs i världen. Bakgrunden till hans engagemang grundade sig i det turkiskottomanska
This thesis discusses the provisions of the Rotterdam Rules on electronic transport records. Among the issues addressed are the current law on bills of lading and attempts at establishing systems issuing electronic bills of lading. The theses then goes on to discuss and analyse the provisions on electronic transport records in detail, their history and objective, along with related provisions on t
Syftet med uppsatsen är att studera hur ett segment av Generation Y ser på in-store recycling - en tjänst myntad av författarna till arbetet. In-store recycling är en tjänst som många fast fashion retail-bolag har börjat erbjuda genom att placera insamlingslådor för kläder som konsumenter vill ha återvunnet eller återanvänt, och i retur får konsumenten en belöning i form av en rabattkupong. För at
Kärnvapen är i allra högsta grad kraftfulla militära och politiska vapen. På grund av detta är frågan om dess legalitet i internationell rätt sedan länge omdebatterad. När frågan ställdes inför den internationella domstolen myntades ett nytt begrepp; ”statlig överlevnad”. Domstolens användning av begreppet väckte frågan om statlig överlevnad utgör ett exceptionellt undantag som kan rättfärdiga vå
