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The last decade has seen a revival of interest in pebble games in the context of proof complexity. Pebbling has proven to be a useful tool for studying resolution-based proof systems when comparing the strength of different subsystems, showing bounds on proof space, and establishing size-space trade-offs. The typical approach has been to encode the pebble game played on a graph as a CNF formula an
The last decade has seen a revival of interest in pebble games in the context of proof complexity. Pebbling has proven to be a useful tool for studying resolution-based proof systems when comparing the strength of different subsystems, showing bounds on proof space, and establishing size-space trade-offs. The typical approach has been to encode the pebble game played on a graph as a CNF formula an
Biomass densification elevates the bulk density of the biomass, providing assistance in biomass handling, transportation, and storage. However, the density and the chemical/physical properties of the lignocellulosic biomass are affected. This study examined the changes introduced by a briquetting process with the aim of subsequent processing for 2nd generation bioethanol production. The hydration
Understanding complex social-ecological systems, and anticipating how they may respond to rapid change, requires an approach that incorporates environmental, social, economic, and policy factors, usually in a context of fragmented data availability. We employed fuzzy cognitive mapping (FCM) to integrate these factors in the assessment of future wildfire risk in the Chiquitania region, Bolivia. In
mend the gap – en pedagogik för ett mobiliserande socialt arbete Mobiliseringskursen är det samlande namnet för en kurs på Socialhögskolan vid Lunds universitet som integrerar socionomstudenter och studenter från olika brukarorga- nisationer i en gemensam inlärningssituation. Kursen utvecklades i samarbete med det sociala fö- retaget Basta och gavs första gången 2005. Basta och Socialhögskolan utv
https://www.soch.lu.se/sites/soch.lu.se/files/mobiliseringskursen.pdf - 2026-07-25
The possibility to reduce dependence on fossil fuel resources has led to an increasing interest in the use of bio-fuels. This study builds on earlier work on (aromatic) cyclic oxygenates [1,2], but a far wider window of engine operation has been investigated in this paper. Two parametric variations of engine operation were performed and discussed: (1) non-EGR operation by means of varying the load
The traditional art market is currently experiencing a digital transformation and multi-sided platforms (MSPs) for trading art are a major part of this. Much research has been done in the area of MSPs, however, there is a lack of studies in the field of starting such platforms for art. Therefore, this study aims to determine the critical success factors (CSFs) for starting an online art platform (
The Danish social workers in the Job Centers holds the key to shaping the public policy, at the frontline. The way they choose to facilitate their tasks practicing digital tools impacts the client’s security and how the profession is being shaped. Policies reforms regarding digital tools aim at providing efficiency for the work processes and actively ensure the clients' legal rights. Polices a
För att tillskrivas straffrättsligt ansvar är ett grundläggande brottskriterium i många länders straffrättssystem att den potentiella gärningsmannen är tillräknelig. En lagöverträdare som har saknat förmåga att förstå och kontrollera sitt handlande betraktas ha en begränsad ansvarsförmåga och undantas därmed från straffrättsligt ansvar. Tillräknelighet utgjorde en brottsförutsättning i 1864-års svTo be held criminally liable, a requirement in the legal systems of many countries is that the potential perpetrator is accountable (tillräknelig). An offender who has lacked the ability to understand and control his actions is often considered unaccountable and is thus exempted from criminal liability. Accountability was a prerequisite for a crime in the Swedish Penal Code of 1864. The criminal j
Introduction: This master’s thesis focuses on exploring improved alternative material solutions for antenna radomes used to protect Beyond Gravity Sweden’s satellite antennas in low Earth orbits. Background: As the environment in low Earth orbit is harsh, surface materials on satellites experience high levels of atomic oxygen, ultra violet radiation, thermal-fluctuation, charged particles and mic
Människor följer ofta en liknande process när de söker sig till professionell vård. Upplevelser av vilka skäl de har för att söka rent faktiskt och vägen fram till att de tar beslutet att söka behövs det dock ytterligare forskning om. Därför är det viktigt att undersöka detta för att utröna människors upplevelse av vilka skäl och funderingar de har fram mot att beslutet att söka vård fattas. DettaPeople generally follow a similar process when seeking professional care. Experience of what reasons they have for actually seeking help and their considerations during the process before they make the decision to seek help is, however, insufficiently researched. Hence, it is important to study this in order to find out people's experience of what reasons and considerations they have during th
Background: Epidemiological studies on the association between maternal exposure to persistent organic pollutants (POPs) and fetal growth alteration report inconsistent findings which weights in favor of additional studies. Methods: Blood samples were collected from interviewed pregnant women in Greenland (572), Kharkiv (611) and Warsaw (258) and were analyzed for CB-153 and p,p'-DDE by gas chroma
An activity-based vocabulary for Voice Output Communication Aids (VOCAs) was designed and evaluated through a user-centred, iterative design process, using expressions from the Gothenburg Spoken Language Corpus as well as other recorded, natural conversations. The growth and development of the vocabulary, called Phrases, was closely linked to its evaluation. The iterative design process included p
The GeoPIXE software for quantitative PIXE trace element imaging and analysis is a well established package for evaluation of characteristic X-ray data for both PIXE and SXRF. For the case of microbeam applications on semi-thick samples knowledge of the local areal density distribution is important for precise quantification. A technique is reported to achieve this using the measurement of beam pa
How can schools influence the viewpoints students hold on aids and sex? The investigation focused on teaching the subject of aids and sex to secondary school students in grades eight through eleven. Thirteen teachers and their students, in 15 different classes, were studied and compared with a control group; altogether 548 students were included in the investigation. The aim of the study was to de
This article proposes nonparametric inference procedures for analyzing microarray gene expression data that are reliable, robust, and simple to implement. They are conceptually transparent and require no special-purpose software. The analysis begins by normalizing gene expression data in a unique way. The resulting adjusted observations consist of gene-treatment interaction terms ( representing di
Popular Abstract in Swedish Den här avhandlingen behandlar främst Schwannceller och hur de reagerar på en nervskada. Schwannceller omger alla nervtrådar i det perifera nervsystemet det vill säga det nervsystem som ligger utanför hjärna och ryggmärg och innerverar armar, ben, händer och fötter och så vidare. Schwannceller och ger dessa tillgång till de näringsämnen de behöver. De städar också upp sThis thesis concerns alterations in signal transduction in Schwann cells as a response to nerve injury as well as their survival, proliferation and death. Enzymes and transcription factors belonging to the mitogen activated protein kinase (MAPK) and the stress activated protein kinase (SAPK) pathways were studied. This included the extracellular-signal-regulated kinase 1/2 (ERK1/2), c-Jun N-termin
The loading of macroelements such as, dissolved organic carbon (DOC), totalnitrogen (N) and total phosphorus (P) from terrestrial soils to aquatic systems isincreasing in the northern hemisphere. This phenomenon has several ecologicaland biogeochemical consequences for inland and coastal water systems, which arelinked to bacterial cycling of DOC, N and P. During growth, bacteria assimilatemacroeleThe loading of terrestrially derived macroelements, such as dissolved organic carbon (DOC), total nitrogen (N), and total phosphorus (P), to inland and estuarine waters is increasing in the northern hemisphere. Thesemacroelements often limit heterotrophic bacterioplankton metabolism (production and respiration), which in turn influence food web structures, exchange of greenhouse gases between the
This paper aims to present a recently started project about the heritage of subaltern people in Sweden. In the paper we focus on the parts of the project that concerns the rural history of the 18th and 19th centuries, especially crofters. The background to the project is the introduction of major changes in the Swedish Historic Environments Act in 2014. A radical novelty is that remains of human aThis paper aims to present a recently started project about the heritage of subaltern people in Sweden. In the paper we focus on the parts of the project that concerns the rural history of the 18th and 19th centuries, especially crofters. The background to the project is the introduction of major changes in the Swedish Historic Environments Act in 2014. A radical novelty is that remains of human a
