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Assessment of handheld mobile terrestrial laser scanning for estimating tree parameters

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Journal of Forestry Research 2021年第4期32卷 1503-1513页

作者： Cornelis Stal Jeff rey Verbeurgt lars De Sloover Alain De Wulf Center for Applied Data Science University College GhentValentin Vaerwyckweg 19000 GhentBelgium Department of Geography 3D Data Acquisition Research UnitGhent UniversityKrijgslaan 2819000 GhentBelgium Department of Geography CartoGIS Research UnitGhent UniversityKrijgslaan 2819000 GhentBelgium

Sustainable forest management heavily relies on the accurate estimation of tree *** others,the diameter at breast height(DBH) is important for extracting the volume and mass of an individual *** systematically estimating the volume of entire plots,airborne laser scanning(ALS) data are *** estimation model is frequently calibrated using manual DBH measurements or static terrestrial laser scans(STLS) of sample *** reliable,this method is time-consuming,which greatly hampers its ***,a handheld mobile terrestrial laser scanning(HMTLS) was demonstrated to be a useful alternative technique to precisely and efficiently calculate *** data acquisition techniques were applied at a sample plot,then the resulting parameters were comparatively *** calculated DBH values were comparable to the manual measurements for HMTLS,STLS,and ALS data *** the comparability of the extracted parameters,with a reduced point density of HTMLS compared to STLS data,and the reasonable increase of performance,with a reduction of acquisition time with a factor of5 compared to conventional STLS techniques and a factor of3 compared to manual measurements,HMTLS is considered a useful alternative technique.

关键词： Forest inventory DBH Airborne laser scanning Terrestrial laser scanning Handheld mobile laser scanning Point cloud processing

Reduced peripheral vascular reactivity in refractory angina pectoris:Effect of enhanced external counterpulsation

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Journal of Geriatric Cardiology 2011年第4期8卷 215-223页

作者： Susanne M Bondesson Marie-Louise Edvinsson Thomas Pettersson lars Edvinsson Department of Medicine Kristianstad HospitalSE-29185 KristianstadSweden Department of Health Sciences Lund Lund UniversitySE-22100 LundSweden Department of Emergency Medicine Lund University HospitalSE-22185 LundSweden

objective To examine if the skin microvascular bed is altered and can be modified by enhanced external counterpulsation(EECP)in patients with chronic refractory *** Twenty patients diagnosed with refractory angina were divided into EECP(n=10)or no EECP(n=10)*** data were compared to matched healthy subjects(n=20).The cutaneous forearm microvascular blood flow was measured by Laser-Doppler *** vascular responsiveness to iontophoretic administration of acetylcholine(ACh),sodium nitroprusside(SNP)and local skin warming were *** of Canadian Cardiovascular Society(CCS)-class,blood pressure and plasma samples were *** EECP patients showed reduced CCS-class compared to no EECP(Poth EECP and no EECP(Poups had decreased systolic blood pressure(SBP)as compared to SBP at baseline(Po difference in resting blood flow between the two refractory groups at baseline as well as after EECP and seven weeks of *** to heating,the responses to ACh and SNP in the cutaneous microcirculation were lower in both groups of refractory angina patients as compared to healthy subjects(Porresponded positively to the treatment shown by reduced plasma level of soluble interleukin-2 receptor and *** Refractory angina patients have reduced responsiveness in their cutaneous microcirculation to ACh,SNP and heat compared to healthy *** EECP reduced the CCS-class,this effect was not associated with improvements in responsiveness of the cutaneous microcirculation.

关键词： refractory angina pectoris flowmetry microcirculation enhanced external counterpulsation

Scientific geodata infrastructures: challenges, approaches and directions

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International Journal of Digital Earth 2014年第7期7卷 613-633页

作者： lars Bernard Stephan Mas Matthias Muller Christin Henzen Johannes Brauner Department of Geosciences Faculty of Environmental SciencesTechnische Universitat DresdenDresdenGermany

Based on various experiences in developing Geodata Infrastructures(GDIs)for scientific applications,this article proposes the concept of a Scientific GDI that can be used by scientists in environmental and earth sciences to share and disseminate their research results and related analysis *** GDI is understood as an approach to tackle the science case in Digital Earth and to further enhance e-science for environmental *** Scientific GDI to support the research community in efficiently exchanging data and methods related to the various scientific disciplines forming the basis of environmental studies poses numerous challenges on today’s GDI *** paper summarizes requirements and recommendations on the publication of scientific geospatial data and on functionalities to be provided in Scientific *** practices and open issues for governance and policies of a Scientific GDI are discussed and are concluded by deriving a research agenda for the next decade.

关键词： scientific geodata infrastructure sharing environmental models geospatial cyberinfrastructure e-science spatial data infrastructure

Increased mortality in elderly heart failure patients receiving infusion of furosemide compared to elderly heart failure patients receiving bolus injection

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Journal of Geriatric Cardiology 2020年第6期17卷 359-364页

作者： Rana Sager Isak Lindstedt lars Edvinsson Marie-Louise Edvinsson Department of Emergency and Internal Medicine Lund University Hospital of SkåneSweden Department of Medicine Institute of Clinical Sciences in LundLund UniversitySweden

Heart failure(HF)is a condition of cardiac dysfunction and fluid *** activation via the reninangiotensin-aldosterone system and the sympathetic nervous system are the pathophysiological cornerstones.[1]Furthermore,HF is a disorder widely associated with grave adverse outcomes and poor prognosis.[2]A loop diuretic is the fundamental drug used to prevent multiorgan failure and improve symptoms in these patients.[3]

关键词： Furosemide Heart failure Infusion Injection Mortality

Deep learning for visualization and novelty detection in large X-ray diffraction datasets

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npj Computational Materials 2021年第1期7卷 942-947页

作者： lars Banko Phillip M.Maffettone Dennis Naujoks Daniel olds Alfred Ludwig Materials Discovery and Interfaces Institute for MaterialsRuhr University BochumBochumGermany National Synchrotron Light Source II Brookhaven National LaboratoryUptonNYUSA ZGH Center for Interface-Dominated High Performance MaterialsRuhr University BochumBochumGermany

We apply variational autoencoders(VAE)to X-ray diffraction(XRD)data analysis on both simulated and experimental thin-film *** show that crystal structure representations learned by a VAE reveal latent information,such as the structural similarity of textured diffraction *** other artificial intelligence(AI)agents are effective at classifying XRD data into known phases,a similarly conditioned VAE is uniquely effective at knowing what it doesn’t know:it can rapidly identify data outside the distribution it was trained on,such as novel phases and *** capabilities demonstrate that a VAE is a valuable AI agent for aiding materials discovery and understanding XRD measurements both‘on-the-fly’and during post hoc analysis.

关键词： VAE uniquely latent

Electrochemical probing into the active sites of graphitic-layer encapsulated iron oxygen reduction reaction electrocatalysts

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Science Bulletin 2018年第1期63卷 24-30页

作者： Lijie Zhong Jens oluf Jensen lars Nilausen Cleemann Chao Pan Qingfeng Li Department of Energy Conversion and Storage Technical University of Denmark

The graphitic-layer encapsulated iron-containing nanoparticles(G@Fe) have been proposed as a potential type of active and stable non-precious metal electrocatalysts(NPMCs) for the oxygen reduction reaction(oRR). However, the contribution of the encapsulated components to the oRR activity is still unclear compared with the well-recognized surface coordinated FeN_x/C structure. Using the strong complexing effect of the iron component with anions, cyanide(CN^-) in alkaline and thiocyanate(SCN^-) in acidic media, the metal containing active sites are electrochemically probed. Three representative catalysts are chosen for a comparison including the as-prepared encapsulated G@Fe, commercial Fe/N/C catalyst with iron–nitrogen coordinated surface functionalities and molecular iron phthalocyanine(Fe Pc) containing well-defined structures and compositions. It was found that all samples showed significant shifts of half-wave potentials indicating that surface Fe coordinated sites in all cases. The G@Fe catalyst showed the weakest poisoning effect(the lowest shifts of half-wave potential) compared to the Fe/N/C and Fe Pc catalysts in both electrolytes. These results could be explained that the encapsulated iron components influence the FeN_x/C and/or N_xC surface functionality.

关键词： Encapsulated Fe catalysts oxygen reduction reaction Ion poisoning Active sites NPMCs

A graph autoencoder network to measure the geometric similarity of drainage networks in scaling transformation

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International Journal of Digital Earth 2023年第1期16卷 1828-1852页

作者： Huafei Yu Tinghua Ai Min Yang Weiming Huang lars Harrie School of Resource and Environmental Sciences Wuhan UniversityWuhanPeople’s Republic of China Department of Physical Geography and Ecosystem Science Lund UniversityLundSweden School of Computer Science and Engineering Nanyang Technological UniversitySingaporeSingapore

Similarity measurement has been a prevailing research topic geographic information *** similarity measurement inin scaling transformation(GSM_ST)is critical to ensure spatial data quality while balancing detailed information with distinctive ***,GSM_ST is an uncertain problem due to subjective spatial cognition,global and local concerns,and geometric *** rule-based methods considering multiple consistent conditions require subjective adjustments to characteristics and weights,leading to poor robustness in addressing GSM_*** study proposes an unsupervised representation learning framework for automated GSM_ST,using a Graph Autoencoder Network(GAE)and drainage networks as an *** framework involves constructing a drainage graph,designing the GAE architecture for GSM_ST,and using Cosine similarity to measure similarity based on the GAE-derived drainage embeddings in different *** perform extensive experiments and compare methods across 71 drainage networks duringfive scaling *** results show that the proposed GAE method outperforms other methods with a satisfaction ratio of around 88%and has strong ***,our proposed method also can be applied to other scenarios,such as measuring similarity between geographical entities at different times and data from different datasets.

关键词： Geometric similarity measurement drainage network scaling transformation graph autoencoder network

2023年美国麻醉医师学会神经肌肉阻滞监测与拮抗实践指南:美国麻醉医师学会工作组关于神经肌肉阻滞的报告

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中华麻醉学杂志 2024年第5期44卷 518-542页

作者： Stephan R.Thilen Wade A.Weigel Michael M.Todd Richard P.Dutton Cynthia A.Lien Stuart A.Grant Joseph W.Szokol lars I.Eriksson Myron Yaster Mark D.Grant Madhulika Agarkar Anne M.Marbella Jaime F.Blanck Karen B.Domino 西雅图华盛顿州明尼阿波里斯明尼苏达州达拉斯得克萨斯州密尔沃基威斯康星州教堂山北卡罗来纳州洛杉矶加利福尼亚州斯德哥尔摩瑞典丹佛科罗拉多州绍姆堡伊利诺斯州巴尔的摩马里兰州

本实践指南基于证据提供了全身麻醉期间及术后神经肌肉功能监测与阻滞拮抗的管理推荐。主要关注神经肌肉功能监测的类型与部位及阻滞拮抗的过程,以减少肌肉松弛药残留阻滞。

关键词：神经肌肉阻滞肌肉松弛药神经肌肉功能监测舒更葡糖钠新斯的明

EXPERIMENTAL HUMAN PAIN

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神经解剖学杂志 2001年第B7期17卷 48-50页

作者： lars ARENDT-NIELSEN Center for Sensory-Motor Interaction Laboratory for Experimental Pain Research Aalborg University Aalborg Denmark PhD

Aim: The present project is to seek the possible electrical stimulation parameter by which wind-up of withdrawal reflex of rats and set up a appropriate animal model for recording the withdrawal reflex of wind-up phenomenon. Meanwhile, a parallel comparison will be made between the recording of withdrawal reflex and dorsal horn (DH) neuron responses in order to investigate the possible correlation associated with sensory and motor interaction of pain information via simultaneous recording. on the other hand, another comparison

关键词：人体疼痛定量测量病理生理方法电生理测量