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The challenge of combining variable retention and prescribed burning in Finland

Ecological Processes 2020年第1期9卷 46-57页

作者： henrik Lindberg Pekka Punttila Ilkka Vanha-Majamaa Häme University of Applied Sciences Visamäentie 35 A Box 230FI-13101 HämeenlinnaFinland Finnish Environment Institute Latokartanonkaari 11FI-00790 HelsinkiFinland Natural Resources Institute Finland(Luke) Latokartanonkaari 9FI-00790 HelsinkiFinland

Historically,wildfires have played an important role in forest dynamics in *** Finland,the annually burned area has diminished in recent *** has led to a decline of fire-adapted habitat types and species,many of which have become *** Fennoscandia,there is a long tradition of silvicultural burnings to enhance tree ***,prescribed burnings have been modified for biodiversity goals following the recommendations that have emerged from ecological *** biodiversity gains can be obtained by combining sufficient retention levels with ***,burning and retention have been recommended by recent national red-list assessments,strategies,and forest-management guidelines,and they have been adopted in forest-certification standards in *** to these recommendations,the opposite development has taken place:(1)the ecological efficiency of the criterion concerning prescribed burning in the PEFC forestcertification standard has been impaired,(2)state funding to encourage private forest owners to apply prescribed burning was reduced significantly,and(3)prescribed burnings have been abandoned altogether in commercial state-owned *** burnings with variable retention have also been partially replaced with burning of small retention-tree *** new method is less risky and cheaper,but its ecological benefits are questionable because small-sized fires produce much smaller areas of burned forest soil with less fire-affected wood than traditional silvicultural ***,the widely accepted goal to increase burnings with retention appears difficult to achieve and would require stronger political will and economic support from the *** identified several actions that could improve the weakened situation of fire-dependent biodiversity and recommend the following:(1)setting a clear goal and ensuring sufficient funding for the burnings—including restoration burnings in co

关键词： biodiversity Conservation areas Fire-dependent species Forest certification Red-listed species Restoration burnings

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How Can We Make Disaster Management Evaluations More Useful?An Empirical Study of Dutch Exercise Evaluations

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International Journal of Disaster Risk Science 2020年第5期11卷 578-591页

作者： Ralf Josef Johanna beerens henrik Tehler ben Pelzer Institute for Safety(IFV) 6801 HA ArnhemThe Netherlands Division of Risk Management and Societal Safety Lund University22100 LundSweden Lund University Centre for Risk Assessment and Management(LUCRAM) Lund University22100 LundSweden Department of Sociology Radboud University Nijmegen6500 HE Nijmegen.The Netherlands

The evaluation of simulated disasters(for example,exercises)and real responses are important ***,little attention has been paid to how reports documenting such events should be written.A key issue is how to make them as useful as possible to professionals working in disaster risk ***,we focus on three aspects of a written evaluation:how the object of the evaluation is described,how the analysis is described,and how the conclusions are *** empirical experiment,based on real evaluation documents,asked 84 Dutch mayors and crisis management professionals to evaluate the perceived usefulness of the three aspects noted *** results showed that how evalua・tions are written does ***,the usefulness of an evaluation intended for learning purposes is improved when its analysis and conclusions are *** contrast,evaluations used for accountability purposes are only improved by the clarity of the con *** findings have implications for the way disaster management evaluations should be documented.

关键词： Disaster management evaluation Evaluation design Evaluation report Exercise evaluation The Netherlands Usefulness

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Advancing the Field of Disaster Response Management:Toward a Design Science Approach

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International Journal of Disaster Risk Science 2021年第2期12卷 220-231页

作者： Tove Frykmer henrik Tehler Christian Uhr Misse Wester Division of Risk Management and Societal Safety Lund University22100LundSweden Lund University Centre for Risk Assessment and Management(LUCRAM) 22100LundSweden

Multiorganizational response to emergencies and disasters requires *** to improve the collective response is therefore an essential question,but not easy to *** disaster research,normative research with a focus on providing evidence for how to improve professional practice has traditionally received less attention than explanatory *** aim of this article,using insights from design science where normative research is more common,is to suggest a complementary approach to response management *** approach,which combines experimental and explanatory research,is applied to a study of goal *** alignment among response actors is often recommended despite literature’s contradictory evidence regarding its *** conducted an experiment with 111 participants,who,in groups of three,played a computer game under one of two conditions(goal alignment or not).Our results show that aligning goals did not improve the outcome in the *** this may serve as a counterargument to implementing goal alignment interventions,there are concerns with such *** reservations include,but are not limited to,the lack of validated models to use in ***,our suggested research approach and the goal alignment experiment highlight the importance of testing interventions and their effectiveness before implementation.

关键词： Design science Disaster response management Experimental research Goal alignment

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Whole-brain three-dimensional imaging for quantification of drug targets and treatment effects in mouse models of neurodegenerative diseases

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Neural Regeneration Research 2020年第12期15卷 2255-2257页

作者： henrik HHansen Urmas Roostalu Jacob Hecksher-Sorensen Gubra HprsholmDenmark

Quantitative histopathology in preclinical neuroscience:Altered brain functionality in neurodegenerative diseases,including Parkinson’s disease(PD)and Alzheimer’s disease(AD),involve complex pathological changes and molecular mechanisms which poses a major challenge for development of effective drug *** loss of specific neuron types and projections are hallmarks of PD and AD and proper histological evaluation of relevant disease models therefore requires highly reliable cell detection.

关键词： drug treatment Alzheimer

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Sequence-sorted redox-switchable hetero[3]rotaxanes

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Organic Chemistry Frontiers 2022年第1期9卷 64-74页

作者： Marius Gaedke henrik Hupatz Felix Witte Susanne M.Rupf Clara Douglas Hendrik V.Schröder Lukas Fischer Moritz Malischewski beate Paulus Christoph A.Schalley Institut für Chemie und biochemie der Freien Universität berlin Arnimallee 2014195 BerlinGermany Institut für Chemie und biochemie der Freien Universität berlin Arnimallee 2214195 BerlinGermany Institut für Chemie und biochemie der Freien Universität berlin Fabeckstr.34/3614195 BerlinGermany

From a library of five crown ether macrocycles with different ring sizes and redox-active moieties,such as tetrathiafulvalene(TTF)and naphthalene dimiide(NDI),directional heterocircuit[3]rotaxanes were *** an axle with two binding sites with different steric accessibility,the concept of integrative self-sorting was applied to program the sequence of functional units in heteropseudo[3]*** on binding strength and ring size of the smaller macrocycles,different heteropseudo[3]rotaxane selectivities and stabilities were determined by 2D NMR spectroscopy and tandem mass spectrometry.A heteropseudo[3]rotaxane with rotaxane-like behaviour was isolated chromatographically,displaying electrochemically“frustrated”properties.A robust synthetic procedure was developed allowing the synthesis of four new hetero[3]rotaxanes incorporating specific sequences of functional *** pseudoisomeric rotaxanes which have the naphthalene diimide subunit at two different positions show distinct electrochemical *** calculations suggest that this differences could arise from a folding of the structure,in which the redox-active moieties stack with a stopper *** study presents a blueprint for the construction of hetero[3]rotaxanes with sequential control of the functional units along the track of the axle and paves the way to extend the functionality of mechanically interlocked molecules.

关键词： properties redox Sequence

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Deposition of Nutrients From Harmattan Dust in Ghana, West Africa

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Pedosphere 2015年第4期25卷 613-621页

作者： henrik bREUNING-MADSEN Theodore Wola AWADZI Gry LYNGSIE Institute of Geosciences and Natural Resource Management University of Copenhagen Department of Geography and Resource Development University of Ghana

In order to measure dust's nutrient input on farmland in different agro-ecological zones, Harmattan dust was sampled by mats with plastic straw in Ghana between 2002–2006. The inputs of total nutrients by Harmattan dust in Ghana per Harmattan period were about 1–2 kg Ca ha-1, 0.5–2 kg K ha-1, 0.5–1.5 kg Mg ha-1and less than 0.5 kg P ha-1. Compared with the annual input of nutrients by precipitation, the dust accounted for 10% or less of Ca, Mg and K but approximately 20%–40% of P. The input of nutrients by dust was only valid for areas with vegetation, because in areas with none or sparse vegetation, loss of soil due to wind erosion and hereby loss of nutrients might be significant. In farmland areas with bare and vegetated fields there seemed to be an internal redistribution of the nutrients and not a net gain of nutrients from outside the area(long-range transported dust). The input of P by dust might be of some importance in the traditional shifting cultivation systems, while the inputs of other three nutrients of Ca, Mg and K were so low that they must be considered insignificant. In the intensive agriculture systems with huge inputs of manures and fertilizers the nutrient input by dust is insignificant and could be neglected.

关键词：养分输入加纳营养物质沉积西非稀疏植被养分投入农业生态区

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biomechanics of posterior shoulder instability-current knowledge and literature review

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World Journal of Orthopedics 2018年第11期9卷 245-254页

作者： henrik Constantin b?cker Samuel E Galle Mauro Maniglio Melvin Paul Rosenwasser Department of Orthopedic Surgery New York Presbyterian/Columbia University Medical Center Department of Orthopedics HFR Cantonal Hospital of Fribourg

Posterior instability of the shoulder is a rare condition and represents about 10% of shoulder instability. It has become more frequently recognized in the last year,even though it is more difficult to diagnose than anterior shoulder instability. As this form of shoulder pathology is somewhat rare,biomechanical knowledge is limited. The purpose of our study was to perform an extensive literature search,including PubMed and Medline,and to give an overview of the current knowledge on the biomechanics of posterior shoulder instability. The Pub Med/Medline databases were utilized,and all articles related to posterior shoulder instability and biomechanics were included to form a comprehensive compilation of current knowledge. A total of 93 articles were deemed relevant according to our inclusion and exclusion criteria. As expected with any newly acknowledged pathology,biomechanical studies on posterior shoulder instability remain limited in the literature. Current biomechanical models are performed in a static manner,which limits their translation for explaining a dynamic pathology. Newer models should incorporate dynamic stabiliza-tion of both the rotator cuff and scapulothoracic joint. There is a current lack of knowledge with regards to the pathomechanism of posterior shoulder instability,with no consensus on appropriate treatment regimens. Further investigation is therefore required at both basic science and clinical levels.

关键词： Posterior shoulder instability Anatomy Shoulder complex Scapula Humerus Glenohumeral

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Voltage rise mitigation for solar PV integration at LV grids Studies from ***

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Journal of Modern Power Systems and Clean Energy 2015年第3期3卷 411-421页

作者： Guangya YANG Francesco MARRA Miguel JUAMPEREZ Søren bækhøj KJÆR Seyedmostafa HASHEMI JacobØSTERGAARD Hans henrik IPSEN Kenn H.b.FREDERIKSEN Centre for Electric Power and Energy Department of Electrical EngineeringTechnical University of Denmark2800 Kgs.LyngbyDenmark Danfoss Solar Inverter A/S 6430 NordborgDenmark Østkraft 3700 RønneDenmark FREDERIKSEN Energimidt8600 SilkeborgDenmark

Solar energy from photovoltaic(PV)is among the fastest developing renewable energy systems *** by governmental subsidies and technological development,Europe has seen a fast expansion of solar PV in the last few *** the installed PV plants,most of them are situated at the distribution systems and bring various operational challenges such as power quality and power flow *** paper discusses the modelling requirements for PV system integration studies,as well as the possible techniques for voltage rise mitigation at low voltage(LV)grids for increasing PV *** solutions are listed and preliminary results are presented.

关键词： Solar photovoltaic(PV) Voltage rise Virtual power plants Ancillary services

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ICT and E-learning, the Road to Hell or Paradise? The Need for a Strategic Thinking on Sustainable Digital Environment for E-learning

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开放教育研究 2005年第3期11卷 58-61页

作者： henrik Hansson Institute of International Education Stockholms University Sweden

The paper mainly discusses the negative sides of technology in education that have arisen from the the rapid development of technology.

关键词：建构主义在线学习现代教育技术学习环境自主学习利弊分析

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ARCHITECTURE AND ITS IMPLEMENTATION FOR RObOTS TO NAVIGATE IN UNKNOWN INDOOR ENVIRONMENTS

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Chinese Journal of Mechanical Engineering 2005年第3期18卷 366-370页

作者： Li Wenfeng Christensen I. henrik Oreback Anders College of Logistics Engineering Wuhan University of Technology Wuhan 430063 China Centre for Autonomous Systems Royal Institute of Technology SE-100 44 Stockholm Sweden

It is discussed with the design and implementation of an architecture for a mobile robot to navigate in dynamic and anknown indoor environments. The architecture is based on the framework of Open Robot Control Software at KTH （OROCOS@KTH）, which is also discussed and evaluated to navigate indoor efficiently, a new algorithm named door-like-exit detection is proposed which employs 2D feature oft. door and extracts key points of pathway from the raw data of a laser scanner. As a hybrid architecture, it is decomposed into several basic components which can be classified as either deliberative or reactive. Each component can concurrently execute and communicate with another. It is expansible and transferable and its components are reusable.

关键词： Indoor navigation Architecture Framework Component Mobile robots

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