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Forskargruppen Tillämpad systemvetenskap för hållbarhet (Applied Systems Science for Sustainability) använder systemtänkande, systemanalys och dynamisk systemmodellering för att undersöka de stora miljömässiga och tekno-socioekonomiska utmaningar som världen står inför. Gruppen analyserar, tolkar, modellerar och kommunicerar komplexa dynamiska problem med hjälp av de metoder och verktyg som tilläm

https://www.cec.lu.se/sv/forskning/forskargrupper/tillampad-systemvetenskap-hallbarhet - 2026-07-15

Forskningsingenjör Kontaktinformation E-post: fredrik [dot] terfelt [at] fysik [dot] lu [dot] se Mobil: +46 76 338 14 91Organisation Grundutbildning i fysik inom naturvetenskapliga fakulteten Besöksadress: Instrumentmakaregränden 6, Lund, Lund Rumsnummer: H 223B Hämtställe: 14 WebbplatsFredrik Terfelts profil i Lunds universitets forskningsportalPersonlig webbplats:https://astrogeobiology.org/Andr

https://www.fysik.lu.se/fredrik-terfelt - 2026-07-16

To solve the problem of fatigue of the UAV operator during long-term search and reconnaissance missions, a research hardware and software complex was created, in which the positioning of the auxiliary UAV video camera with a narrow field of view is carried out. Dynamixel Library for MATLAB and Simulink was used to organize the interaction of actuators with the virtual environment, which allows com

In this paper a controller reduction method which preserves closed loop stability is described. A Lyapunov inequality based sufficient condition is proposed in the search of the reduced controller. The reduced controller leads to a stable closed loop system with guaranteed approximation quality. Furthermore, the proposed problem can be formulated as a matrix approximation problem which can be solv

Nuclear technology and the use of radiation sources have been extensively adopted in the modern world. Despite that, a number of radiological accidents, significantly affecting population and the environment, has happened. Few of the most known are accidents in Chernobyl and Fukushima nuclear power plants. As a result, significant areas are still contaminated with some residential areas evacuated

This study explores the integration of Large Language Model (LLM) and Information Retrieval (IR) components to enable filtered search over multimodal structured data. We identify core integration challenges and introduce a conceptual framework based on two paradigms: filtered retrieval and filtered re-ranking. With the focus on the latter, we employ RT-3 rank transformation to dynamically adjust t

We describe and demonstrate our work on multimodal filtered vector search in tabular data. It offers a practical way for businesses to vectorize their product assortments or any other business-critical data and then simultaneously retrieve and filter this information using state-of-the-art similarity search. Our methodology is based on the extended vector space model, with multiple modalities repr

Given a capacitated telecommunications network with single path routing and an estimated traffic demand matrix, we aim to determine the routing path of each traffic commodity such that the whole set of paths provide an optimal network load balancing. In a recent paper, we have proposed a column generation based heuristic where, in the first step, we use column generation to solve a linear programm

Non-Orthogonal Multiple Access (NOMA) for a multi-user single- input single-output (SISO) setup is studied in the power and the frequency domains simultaneously. The problem of sum-bandwidth minimization under perfect channel state information is solved for various combinations of rate requirements and user pairings. In this process, an iterative Tabu-search based algorithm is applied to avoid an

We propose drl-RPN, a deep reinforcement learning-based visual recognition model consisting of a sequential region proposal network (RPN) and an object detector. In contrast to typical RPNs, where candidate object regions (RoIs) are selected greedily via class-agnostic NMS, drl-RPN optimizes an objective closer to the final detection task. This is achieved by replacing the greedy RoI selection pro

Personaldag UB Förbättringar i Linnéuniversitetets OneSearch (och Medbibs EDS) Nordic User Group Stockholms UB, torsdagen den 17/3-2016 Länkar E-bokslänkar Enhetlighet Hjälp till E-bokslänkar Rapportering av trasiga länkar SwePub-länk Medbib: Läs e-bok Katalogen Hitta-bok-länk Beställningsknapp för böcker Övrigt Övergång mellan engelsk och svensk EDS-sökning Vecka ihop vyn för enstaka post Tydliga

https://www.ub.lu.se/sites/ub.lu.se/files/eds_nordic_user_group_linne.pptx - 2026-07-17

Research that meets the challenges of our time Our research increases our understanding of the world, makes complex issues comprehensible and addresses global challenges in areas such as democracy, digitalisation, health and sustainability. Sustainable planetOur research contributes to a better understanding of the problems around us, but also to solving current and future environmental and climat

https://www.lunduniversity.lu.se/research-and-innovation/focus-areas - 2026-07-15

Meddelanden från HT-biblioteken | februari 2025 Meddelanden från HT-biblioteken | februari 2025 Publicerad den 15 februari 2025 Foto: Sarah Giboni I denna månads nyhetsbrev informerar vi om LU:s nya bibliotekssöktjänst Finn som ska lanseras till hösten. Vi informerar också om ett nytt avtal för inköp av tryckt litteratur, en introduktion till EndNote och, i vanlig ordning, om våra öppna laboration

https://www.htbibl.lu.se/article/meddelanden-fraan-ht-biblioteken-februari-2025/ - 2026-07-16

In this paper, we extend the control contraction metrics (CCM) approach, which was originally proposed for the universal tracking control of nonlinear systems, to those that evolves on Lie groups. Our idea is to view the manifold as a constrained set that is embedded in Euclidean space, and then propose the sufficient conditions for the existence of a CCM and the associated controller design. Nota

In this paper we propose a novel trellis based soft-input soft-output MIMO detector with significantly reduced search space. The performance of the detector is measured by evaluating the ultimate communication rate that is achievable for a system employing the novel detector; this limit corresponds to a mutual information that can be determined by standard methods. We also derive an expression tha

Purpose: To study Intensity Modulated Proton Therapy (IMPT) with a new treatment planning optimization software. The aim was also to make a comparative study between existing conventional photon plans, Intensity Modulated X-ray Therapy (IMXT) plans and IMPT plans for three different cancer diagnoses. Materials and methods: The conventional photon plans and the IMXT plans were optimized in Oncentra

This paper explores the dilemmas of upward social mobility from the perspective of opting out of conventional middle-class aspirations in search of better lives. East Asian education systems are globally renowned for their high academic standards and for producing students who score at the top on international assessment tests and rankings. It is well established in previous research that (middle-