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Updated appropriate use criteria for amyloid and tau PET : A report from the Alzheimer's Association and Society for Nuclear Medicine and Molecular Imaging Workgroup
INTRODUCTION: The Alzheimer's Association and the Society of Nuclear Medicine and Molecular Imaging convened a multidisciplinary workgroup to update appropriate use criteria (AUC) for amyloid positron emission tomography (PET) and to develop AUC for tau PET. METHODS: The workgroup identified key research questions that guided a systematic literature review on clinical amyloid/tau PET. Building on
Forest structural diversity modulates tree growth synchrony in response to climate change
Following centuries of deforestation, many industrialized countries have experienced an increase in forest area and biomass due to changes in land- and forest-use since the mid-20th century. At the same time, the impacts of climate change on forests are aggravating, but the interplay between past land- and forest-use (i.e. land- and forest-use legacies) and climate change in tree growth remains el
Forest Productivity Decreases in Response to Recent Changes in Vegetation Structure and Climate in the Latitudinal Extremes of the European Continent
Aim: Climate change is driving increasingly frequent and intense extreme climatic events, pushing many forests worldwide beyond their physiological thresholds. Despite the major role played by forests in the global carbon cycle, climate change threatens the future potential for carbon sequestration in forests. Hence, studies of recent changes in stand productivity and the underlying drivers over l
Evidence of non-stationary relationships between climate and forest responses : Increased sensitivity to climate change in Iberian forests
Climate and forest structure are considered major drivers of forest demography and productivity. However, recent evidence suggests that the relationships between climate and tree growth are generally non-stationary (i.e. non-time stable), and it remains uncertain whether the relationships between climate, forest structure, demography and productivity are stationary or are being altered by recent c
Acknowledgement to reviewers and guest editors of ECOSISTEMAS in the year 2023
The easyclimate R package : Easy access to high-resolution daily climate data for Europe
In recent decades there has been an increasing demand in environmental sciences for harmonized climatic data at large spatial scales and long periods. Here we present easyclimate, a software package to obtain daily climatic data at high resolution (0.0083°, ∼1 km) with R. The package facilitates the downloading and processing of precipitation, minimum and maximum temperatures for Europe from 1950
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Tree Genera Classifications in Spain Using Time-Series Sentinel-2 Data Extracted from Plottosat
PlotToSat is a tool that uses the Python API of Google Earth Engine (GEE) to solve the problem of creating time-series of Earth Observation (EO) data at multiple plot locations spread out within a landscape. The current version supports Sentinel-1 and Sentinel-2. It is a flexible framework though that allows easy addition of EO datasets. Using PlotToSat, we generated a Normalised Difference Vegeta
Identifying Forest Structural Types along an Aridity Gradient in Peninsular Spain : Integrating Low-Density LiDAR, Forest Inventory, and Aridity Index
Forest structure is a key driver of forest functional processes. The characterization of forest structure across spatiotemporal scales is essential for forest monitoring and management. LiDAR data have proven particularly useful for cost-effectively estimating forest structural attributes. This paper evaluates the ability of combined forest inventory data and low-density discrete return airborne L
Recent increase in tree damage and mortality and their spatial dependence on drought intensity in Mediterranean forests
Context: Global change is leading to more frequent and intense tree damage and mortality events. Drought-induced tree mortality is occurring worldwide leading to broad-scale events, but the spatial patterns of tree damage and mortality, their underlying drivers and their variation over time is largely unknown. Objectives: We investigated the spatial patterns of tree damage and mortality across Med
PlotToSat : A tool for generating time-series signatures from Sentinel-1 and Sentinel-2 at field-based plots for machine learning applications
PlotToSat offers a practical and time efficient way to the challenge of extracting time-series from multiple Earth Observation (EO) datasets at numerous plots spread across a landscape. This opens up new opportunities to understand and model various ecosystems. Regarding forest ecology, plot networks play a vital role in monitoring and understanding the dynamics of forest ecosystems. These network
ECOSISTEMAS consolidates its commitment to an open and fair publishing system and moves towards its internationalization
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Gör studenter redo att bidra i omställningen : 163 universitetsanställda : Vi kräver förändring av högre utbildningar
Impact of antenna pattern directivity on near-field focusing of planar array in large intelligent surface applications
Near-field focusing (NFF) is a fundamental enabler for a broad spectrum of applications utilizing large intelligent surfaces (LIS) within sub-10 GHz frequency bands. This paper investigates the impact of element pattern on NFF properties, when the LIS array is a large planar array. The NFF properties of maximum received power, focal width, and focal depth are analyzed for three typical antenna pat
Transgender and Gender-Diverse Individual's Experiencesof Openness and Concealment at Work in Swede
The workplace is an important part of many people's lives. Many transgender and gender-diverse (TGD) individuals have negativeexperiences of their workplace due to discrimination and cisnormativity. Whether or not to be open about TGD experiences, andthe degree of openness, is something many TGD individuals struggle with at work. Openness is related to well-being and job satis-faction and is thereThe workplace is an important part of many people's lives. Many transgender and gender-diverse (TGD) individuals have negative experiences of their workplace due to discrimination and cisnormativity. Whether or not to be open about TGD experiences, and the degree of openness, is something many TGD individuals struggle with at work. Openness is related to well-being and job satisfaction and is ther
Motion in event structure
According to a localist theory of event semantics, event types such as state changes and realisation of actions are based on motion events, which are taken to be the primary type of event. The present paper investigates some claims of this theory, their consequences and conceptual foundations. It argues that the theory suffers from two flaws. First, the theory proposes parallels between event type
Unveiling Psychedelics : One of the Most Meaningful Events in Life Associated with Improved Well-Being in Swedish Users
In the midst of growing research and societal discourse on psychedelic substances, a consistent finding is reported: A majority of users report profound personal meaning from their experiences. This pioneering study in Sweden, a nation renowned for its strict drug policies, sought to quantify the extent of reported meaningfulness among Swedish psychedelic users. Results revealed that a majority of
