Windthrow damage detection in Nordic forests by 3D reconstruction of very high-resolution stereo optical satellite imagery

We tested whether windthrow damage to Nordic conifer forest stands could be reliably detected as canopy height decrease between a pre-storm LiDAR (Light Detection and Ranging) digital surface model (DSM) and a photogrammetric DSM derived from a post-storm WorldView-3 stereo pair. The post-storm ground reference data consisted of field and unmanned aerial vehicle (UAV) observations of windthrow combined with no-damage areas collected by visual interpretation of the available very high resolution (VHR) satellite imagery. We trained and tested a thresholding model using canopy height change as the sole predictor. We undertook a two-step accuracy assessment by (1) running k-fold cross-validation on the ground reference dataset and examining the effect of the potential imperfections in the ground reference data, and (2) conducting rigorous accuracy assessment of the classified map of the study area using an extended set of VHR imagery. The thresholding model produced accurate windthrow maps in dense, productive forest stands with a sensitivity of 96%, specificity of 71%, and Matthews correlation coefficient (MCC) over 0.7. However, in sparse and high elevation stands, the classification accuracy was poor. Despite certain collection challenges during the winter months in the Nordic region, we consider VHR stereo satellite imagery to be a viable source of forest canopy height information and sufficiently accurate to map windthrow disturbance in forest stands of high to moderate density.publishedVersio

Montana Kaimin, November 7, 1974

Student newspaper of the University of Montana, Missoula.https://scholarworks.umt.edu/studentnewspaper/7368/thumbnail.jp

Evaluation of the QVT Merge Language Proposal

-STF90 A05045This report has identified 29 weighted evaluation criteria representing desired properties of a model to model transformation language. These criteria have been used to evaluate the current QVT Merge specification. We have so far only been able to evaluate 21 of these criteria, mainly due to missing tool support. Some of the criteria are considered absolute in the sense that missing to fulfil such a criterion is considered a failure. The 21 evaluated criteria give a score of 59 out of a maximum possible score of 68 (language-based + example-based testing). We have also compared the QVT-Merge submission with the QVT-Compuware/Sun submission and at the time being the QVT-Merge seems to be the preferred one due to more support on the absolute criteria and better easy-to-use score. Eight transformation examples for solving six different transformation tasks have given a lot of insight on the ease of use criteria for both simple and complex transformations. When defining transformations using QVT Merge we believe that a lot of effort may be required in order to define the source and target  metamodels. The evaluation in this report could be improved by using the reference examples with alternative approaches published in the literature. An available QVT-Merge tool is necessary in order to provide evaluations of all the suggested criteria. In order to further investigate the usability of the graphical notation, we need to define more of the transformation examples graphically. Only one of the examples has been specified graphically in this version. The current evaluation has been done by a single evaluator who has only reviewed the transformation code that was written by somebody else. The evaluation will be further improved by incorporating input from other evaluators as well as evaluation from those who wrote the transformation code. Oppdragsgiver: EU Commissio

Anthropological Contributions to Cognitive Science

Anthropology was a founding member of cognitive science(Bender et al., 2010; Gardner, 1985), sharing with othercognitive disciplines a deep interest in thinking and behav-ior. With its unique expertise in the cultural content, con-text, and constitution of cognition, it would still be essentialto any comprehensive endeavor to explore the human mind(Bloch, 2012), but rather has turned into cognitive science’s“missing discipline” (Boden, 2006), thus leaving importantquestions unanswered or even unasked. Given that substan-tial shares of knowledge are implicit and that cognition issituated, distributed, embodied, and grounded in variousother ways, anthropological approaches provide privilegedaccess to investigation: for arriving at reasonable hypothe-ses, ensuring ecological validity, and even for coming upwith new research questions and paradigms (Astuti &Bloch, 2012; Hutchins, 2010; Nersessian, 2006).In line with recent calls for rapprochement in Topics inCognitive Science (Bender et al., 2012; Beller & Bender,2015), our symposium brings together scholars that repre-sent different branches of contemporary anthropology withdistinct perspectives—including ‘traditional’ social anthro-pology, cognitive anthropology and ethno-linguistics, cogni-tive ecology, evolutionary anthropology, and archaeology—to present what they consider to be indispensable contribu-tions to cognitive science.With our selection of authors, we hope to demonstrate thevalue of anthropological approaches for cognitive science aswell as the potential benefits of cross-disciplinary collabora-tion. Cognitive archaeologist Overmann discusses a theo-retical perspective on how mind, behavior, and materialartifacts interact to shape human cognition. Combining theirexpertise in linguistics and evolutionary anthropology, Ráczand Jordan investigate the design principles of kinship sys-tems as near-universal conceptual tools. With his back-ground in (ethno-)linguistics and cognitive anthropology,Le Guen uses Yucatec Maya sign languages to illustrate theimportance of cultural practices for shaping cognitive be-havior. Based on Hutchins’ cognitive ecology approach,Solberg speaks to questions at the intersection of anthropol-ogy and philosophy of science by illuminating the culturalframework of science production in a biology lab. And so-cial anthropologist Astuti concludes by taking a bird’s eyeview on how efforts to understand the human mind cruciallybenefit from acknowledging its historical origins and fromtaking the specific sociocultural contexts into consideration.Based on work some of which is published in high-qualityjournals (such as Science, Nature, PNAS, BBS, TiCS, Cur-rent Anthropology, or Cognition), these participants willoffer invaluable contributions to a more diverse, more inclu-sive, and hence more comprehensive cognitive science

Metabolomic Analyses of Plasma Reveals New Insights into Asphyxia and Resuscitation in Pigs

Currently, a limited range of biochemical tests for hypoxia are in clinical use. Early diagnostic and functional biomarkers that mirror cellular metabolism and recovery during resuscitation are lacking. We hypothesized that the quantification of metabolites after hypoxia and resuscitation would enable the detection of markers of hypoxia as well as markers enabling the monitoring and evaluation of resuscitation strategies.Hypoxemia of different durations was induced in newborn piglets before randomization for resuscitation with 21% or 100% oxygen for 15 min or prolonged hyperoxia. Metabolites were measured in plasma taken before and after hypoxia as well as after resuscitation. Lactate, pH and base deficit did not correlate with the duration of hypoxia. In contrast to these, we detected the ratios of alanine to branched chained amino acids (Ala/BCAA; R(2).adj = 0.58, q-value<0.001) and of glycine to BCAA (Gly/BCAA; R(2).adj = 0.45, q-value<0.005), which were highly correlated with the duration of hypoxia. Combinations of metabolites and ratios increased the correlation to R(2)adjust = 0.92. Reoxygenation with 100% oxygen delayed cellular metabolic recovery. Reoxygenation with different concentrations of oxygen reduced lactate levels to a similar extent. In contrast, metabolites of the Krebs cycle (which is directly linked to mitochondrial function) including alpha keto-glutarate, succinate and fumarate were significantly reduced at different rates depending on the resuscitation, showing a delay in recovery in the 100% reoxygenation groups. Additional metabolites showing different responses to reoxygenation include oxysterols and acylcarnitines (n = 8-11, q<0.001).This study provides a novel strategy and set of biomarkers. It provides biochemical in vivo data that resuscitation with 100% oxygen delays cellular recovery. In addition, the oxysterol increase raises concerns about the safety of 100% O(2) resuscitation. Our biomarkers can be used in a broad clinical setting for evaluation or the prediction of damage in conditions associated with low tissue oxygenation in both infancy and adulthood. These findings have to be validated in human trials

Resultater fra prosjekt FARGO 2021

Høsten 2019 ble prosjektet Plasmabehandlet husdyrgjødsel – gjødselvirkning, miljøpåvirkning og klimagassutslipp (Fargo) innvilget finansiering fra Forskningsrådet. Prosjektet er i kategorien Innovasjonsprosjekt i næringslivet. Selskapet N2 Applied er prosjekteier og de går også inn med halvparten av prosjektets finansiering på til sammen 15 millioner kroner over prosjektets tre år: 2020-2022. Denne rapporten gjennomgår opplegg og resultater for de 11 feltforsøkene i gras og korn, 2 forsøk i vekstrom og 4 forsøk for effekter på jordliv i 2021. Høsten 2022 kommer prosjektets sluttrapport med resultatene for alle tre prosjektårene og samlede vurderinger og konklusjoner i henhold til prosjektenes mål og delmål

Three approaches to estimate wolf Canis lupus predation rates on moose Alces alces populations

Abstract We employed three different methods to estimate predation rates on moose in a newly colonized wolf territory in Norway. In the first two methods, we estimated predation rates based on the difference in calf/cow ratios outside and inside the wolf pack territory from (1) hunter observations and (2) aerial surveys. In the last method, (3) we estimated loss of calves of radio-collared cows inside and outside the wolf pack territory. The difference in mortality rates estimated between the area subject to predation and the area outside the wolf pack territory essentially constitutes the additive component of predation. We also tested the sensitivity of violating the assumptions of methods 1 and 2 related to equal fecundity and mortality because of other factors than predation inside and outside the wolf pack territory. Predation rates varied considerably between years and methods used, with hunter observations (method 1) giving the lowest and aerial surveys (method 2) giving the highest estimates. Method 3 (radio telemetry) was the most direct assessment of predation and probably the best approach to estimate predation rates in moose. However, all three methods show the same yearly changes and may therefore be appropriate to question trends trough time or between areas