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A dominating set of a graph G is a set D⊆ VG such that every vertex in VG- D is adjacent to at least one vertex in D, and the domination number γ(G) of G is the minimum cardinality of a dominating set of G. A set C⊆ VG is a covering set of G if every edge of G has at least one vertex in C. The covering number β(G) of G is the minimum cardinality of a covering set of G. The set of connected graphs
The creation of an efficient public transport system increasingly requires collaboration between independent organizations. Institutional reforms in Europe have created governance situations where collaboration between organizations is a critical issue, and examples include the integration of transport and land-use planning and the planning of large public transport projects. The organizational co
Most studies of patents citations focus on national or international contexts, especially contexts of high absorptive capacity, and employ examiner citations. We argue that results can vary if we take the region as the context of analysis, especially if it is a region with low absorptive capacity, and if we study applicant citations and examiner-inserted citations separately. Using a sample from t
Chemical exchange saturation transfer (CEST), arterial spin labeling (ASL), and magnetization transfer contrast (MTC) methods generate different contrasts for MRI. However, they share many similarities in terms of pulse sequences and mechanistic principles. They all use RF pulse preparation schemes to label the longitudinal magnetization of certain proton pools and follow the delivery and transfer
Improving the product lifetime of consumer electronics can provide significant environmental benefits. However, there is a tendency among both professional users and consumers to change products, like computers and mobile phones regularly, and as a result their lifetimes become increasingly shorter. With the rise of the Circular Economy, new policies to promote longer product lifetimes have emerge
The root-associated habit has evolved on numerous occasions in different fungal lineages, suggesting a strong evolutionary pressure for saprotrophic fungi to switch to symbiotic associations with plants. Species within the ubiquitous, saprotrophic genus Mycena are frequently major components in molecular studies of root-associated fungal communities, suggesting that an evaluation of their trophic
In this paper, we determined the optimal flow rate trajectory during the loading phase of a mAb capture column. For this purpose, a multi-objective function was used, consisting of productivity and resin utilization. Several general types of trajectories were considered, and the optimal Pareto points were obtained for all of them. In particular, the presented trajectories include a constant-flow l
We prove that there are 3-conjunctive normal form formulas over n variables that can be refuted in resolution in width w but require resolution proofs of size nΩ(w). This shows that the simple counting argument that any formula refutable in width w must have a proof in size nO(w) is essentially tight. Moreover, our lower bound generalizes to polynomial calculus resolution and Sherali-Adams, implyi
A lion’s roar, a dog’s bark, an angry yell in a pub brawl: what do these voca-lizations have in common? They all sound harsh due to nonlinear vocal phenomena (NLP)—deviations from regular voice production, hypothesized to lower perceived voice pitch and thereby exaggerate the apparent bodysize of the vocalizer. To test this yet uncorroborated hypothesis, we synthesized human nonverbal vocalization
Background: Pancreatic ductal adenocarcinoma has the lowest survival rate among all major cancers and is the third leading cause of cancer-related mortality. The stagnant survival statistics and dismal response rates to current therapeutics highlight the need for more efficient preclinical models. Patient-derived organoids (PDOs) offer new possibilities as powerful preclinical models able to accou
Prisons inevitably leave their mark on all who pass through their gates. In this article two psychologists reflect on how prisons left their mark during our ethnographic fieldwork in developing countries. Via reflection on our own experiences the article advances thediscussion of the role of emotions in prison ethnographies. The article is based on a meta- analysis of field notes with a focus on e
Understanding the loss surface of neural networks is essential for the design of models with predictable performance and their success in applications. Experimental results suggest that sufficiently deep and wide neural networks are not negatively impacted by suboptimal local minima. Despite recent progress, the reason for this outcome is not fully understood. Could deep networks have very few, if
This doctoral thesis explores the effects of carbohydrate(CHO)-restricted diets on symptoms and disease-related variables in type 2 diabetes mellitus (T2DM) and the irritable bowel syndrome (IBS). Aims were to examine the effects of (I) the moderately-low CHO Okinawan-based Nordic diet on anthropometry and metabolism and microbiota-related, inflammatory, and cognitive parameters in T2DM, and (II)
Ribonucleotide reductases catalyze the reduction of ribonucleotides to deoxyribonucleotides. Three classes have been identified, all using free- radical chemistry but based on different cofactors. Classes I and II have been shown to be evolutionarily related, whereas the origin of anaerobic class III has remained elusive. The structure of a class III enzyme suggests a common origin for the three c
Exercise cardiovascular magnetic resonance (CMR) can unmask cardiac pathology not evident at rest. Real-time CMR in free breathing can be used, but respiratory motion may compromise quantification of left ventricular (LV) function. We aimed to develop and validate a post-processing algorithm that semi-automatically sorts real-time CMR images according to breathing to facilitate quantification of L
Risk has become one of the main topics in fields as diverse as engineering, medicine and economics, and it is also studied by social scientists, psychologists and legal scholars. But the topic of risk also leads to more fundamental questions such as: What is risk? What can decision theory contribute to the analysis of risk? What does the human perception of risk mean for society? How should we jud
Acute myeloid leukemia (AML) is characterized by a differentiation block leading to accumulation of immature cells. Chromosomal translocations in AML affect transcription factors that are involved in regulation of myeloid differentiation. Aberrant expression of these factors interferes with differentiation events and has a role in the pathogenesis of AML through superactivation or (dominant negati
Periodic shadowing, a concept used in spectroscopy for stray light reduction, has been implemented to improve the temporal contrast of streak camera imaging. The capabilities of this technique are first proven by imaging elastically scattered picosecond laser pulses and are further applied to fluorescence lifetime imaging, where more accurate descriptions of fluorescence decay curves were observed
