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Understanding and quantifying the global methane (CH4) budget is important for assessing realistic pathways to mitigate climate change. CH4 is the second most important human-influenced greenhouse gas in terms of climate forcing after carbon dioxide (CO2), and both emissions and atmospheric concentrations of CH4 have continued to increase since 2007 after a temporary pause. The relative importance
This paper discusses recent advances that have been made in the field of psychometrics, specifically, the application of Rasch analysis to the instrument development process. It emphasizes the importance of assessing the fundamental scaling properties of an instrument prior to consideration of traditional psychometric indicators. The paper introduces Rasch analysis and shows how it has been applie
Associate professor | Senior lecturer | Recognised Teaching Practitioner Contact details Email: thomas [dot] hickmann [at] svet [dot] lu [dot] se Phone: +46 46 222 89 49Organisation Department of Political Science Service point: 31 WebpageThomas Hickmanns profile in Lund University research portalOther affiliations Senior lecturer Department of Political Science Member of Strategic Research Area B
https://www.svet.lu.se/en/thomas-hickmann - 2026-07-09
Land ecosystems contribute to climate change mitigation by taking up approximately 30% of anthropogenically emitted carbon. However, estimates of the amount and distribution of carbon uptake across the world's ecosystems or biomes display great uncertainty. The latter hinders a full understanding of the mechanisms and drivers of land carbon uptake, and predictions of the future fate of the land ca
Den boreala regionen innehåller 40% av jordens kol (C) som lagras i vegetation och mark med sina skogar som står för nästan 30% av den terrestra C sänkan. Boreala skogar upplever några av de snabbaste hastigheterna för klimatuppvärmning och ökningar i brandaktivitet, vilket hotar att släppa ut stora mängder av deras C reserver till atmosfären. Även om klimat och skogsbränder har stark kontroll öveThe boreal region contains 40% of the earth’s carbon (C) that is stored in vegetation and soils with its forests accounting for almost 30% of the terrestrial C sink. Boreal forests are experiencing some of the most rapid rates of climatic warming and increases in fire activity, threatening to release large amounts of their dense C reserves to the atmosphere. While climate and wildfire place strong
Aim: We aimed to study the feasibility and tolerability of a combination therapy consisting of glutamic acid decarboxylase (GAD-alum), Etanercept and vitamin D in children and adolescents with newly diagnosed with type 1 diabetes (T1D), and evaluate preservation of beta cell function. Material and Methods: Etanercept Diamyd Combination Regimen is an open-labelled multi-centre study pilot trial whi
AIMS: Patients with arrhythmogenic right ventricular cardiomyopathy (ARVC) have increased prevalence of atrial arrhythmias indicating atrial involvement in the disease. We aimed to assess the long-term evolution of P-wave indices as electrocardiographic (ECG) markers of atrial substrate during ARVC progression. METHODS AND RESULTS: We included 100 patients with a definite ARVC diagnosis according
It has been observed that some of the rules in a generative grammar of a language reflect changes that have occurred in the language and furthermore that the order of applying some rules reflects the chronology of the historical changes. 1 The synchronic grammar may reflect changes of various time depths and does not mirror the whole history or a certain period of the history completely. Some rule
This paper presents a decomposition strategy applicable to DAE constrained optimization problems. A common solution method for such problems is to apply a direct transcription method and to solve the resulting non-linear program using an interior point algorithm, where the time to solve the linearized KKT system at each iteration is dominating the total solution time. In the proposed method, the s
Ergonomics are, in most cases, focusing on the human being when evaluating assembly system designs. This results in the human performance being expressed isolated from the technical environment. On the other hand, technicians are prone to concentrate on the hardware. These conditions underline the need to pursue a more integrated evaluation and design procedure in order to avoid the drawbacks of t
Teachers in Social Studies can benefit from geographical perspectives in their teaching of Social Studies in elementary and high school. The aim is to connect geographical perspectives to various social processes and to integrate it in teaching of Social Studies. But how can the relevance of geographical perspectives in an education for teachers in Social Studies be motivated and to what benefits
Popular Abstract in Swedish För att tillverka produkter av hög kvalitet, behöver industriella företag strukturera arbetet med hjälp av instruktioner och riktlinjer som är lätta att förstå och komma åt. Dessa samlas ofta i en eller flera pärmar eller på internt datornätverk, ofta som en del av den internationella kvalitetsstandarden ISO 9000. Men detta fungerar sällan som ett välfungerande stöd förIndustrial companies supply products intended to satisfy customers’ needs and requirements. To be competitive and to maintain good economic performance, efficient systems are needed to communicate information and exchange knowledge. Such systems are often referred to as quality systems as they intend to support development as well as standardized work regarding the quality of the product and incre
The purpose of this Master Thesis was to design an automatic separator, a machine that would separate organic from non-organic waste through a mechanical process. The use of a mechanical process was one of the target specifications given by WTM AB, the company that initiated the project. WTM is a small machine design company located in Ängelholm, Sweden, who designs machines for different kind of
Introduction: Understanding violent criminality and its impact on health and eventually the risk of premature mortality is important for efficient future interventions. This study aimed to explore the effect violent criminality had on premature mortality (i.e., death before the age of 65) among individuals with substance use disorders (SUDs). Methods: The cohort was created by identifying all Swed
The study presents a political economic analysis of spatial inequality in Tehran focusing on four sectors of social reproduction, namely, housing, healthcare, education, and transportation. The study argues that spatial inequality is rooted in the peculiarities of Iranian capitalism. Struggling with low productivity, the manufacturing sector needs wages to remain low and unemployment to remain hig
