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植物生态学报 2007年第4期31卷 695-710页

作者： Jonathan M.Frantz Nilton N.Cometti marc w.van iersel Bruce Bugbee USDA ARSApplication Technology Research Unit 2801 W.BancroftMail Stop 604ToledoOH 43606USA Escola Agrotécnica Federal de Colatina Cx Postal 256CEP 29709-910 ColatinaESBrasil Department of Horticulture the University of GeorgiaAthensGA 30602-7273USA Crop Physiology Laboratory Department of PlantsSoilsand BiometeorologyUtah State UniversityLoganUT 84322-4820USA

Aims Changes in light and temperature are among the most common and most profound environmental perturbations. The independent effects of light and temperature on photosynthesis and respiration are well studied in single leaves, but are less well studied in whole plants. The short and long term influence of light and temperature on carbon use efficiency is also poorly understood, and is commonly modeled to remain constant over a wide range of conditions. we sought to determine the primary effects of changing light at two growth temperatures on photosynthesis, respiration, and their balance, as defined by carbon use efficiency. Methods we separated respiration into growth and maintenance components using whole-canopy gas-exchange in an elevated CO2 environment in a controlled environment, and supplemented that information with tissue analysis. Important findings Decreases in light level decreased carbon use efficiency through a reduction in the maintenance coefficient, increased the growth coefficient, and reduced partitioning of N in protein. Growth temperature did not significantly affect either maintenance or growth respiration coefficients, suggesting that long-term temperature responses can differ greatly from short-term observations.

关键词：番茄光照温度环境适应性二氧化碳碳素利用率遮阳棚

Towards estimating shade response of bermudagrass(Cynodon spp.)using field-based photosynthetic properties

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Grass Research 2022年第1期2卷 20-25,I0001-I0004页

作者： Jonathon L.Fox David Jespersen Lisa L.Baxter John L.Snider marc w.van iersel Brian M.Schwartz Department of Crop and Soil Sciences University of Georgia2360 Rainwater Rd.TiftonGA 31794USA Department of Crop and Soil Sciences University of Georgia1109 Experiment St.GriffinGA 30223USA Department of Horticulture University of Georgia1111 Plant Science BuildingAthensGA 30602USA

Shade tolerance is a highly desirable trait when breeding new bermudagrass(Cynodon spp.)lines,but current screening methods can take many years to *** is a clear need for large-scale turfgrass breeding programs to reliably,accurately,and quickly predict shade tolerance in their *** objectives of this research were to:(i)build custom chambers to reproducibly estimate photosynthetic characteristics from turfgrass canopies at different light intensities and(ii)determine which photosynthetic characteristics are indicative of past shade performance.A custom-built chamber was constructed to determine average photosynthetic characteristics for the whole plant by studying the turfgrass canopy at natural leaf angles for light *** tolerant(11-T-56)and shade sensitive(Tifway)bermudagrass cultivars were used to examine the effectiveness of the chamber within an array of photosynthetic characteristics when the grasses were grown in full-sun and 73%shade *** compensation point,chlorophyll content,quantum yield,dark respiration rate,and maximum quantum yield of photosystem II were evaluated in this *** on the results of this study,the authors recommend that light compensation point or maximum quantum yield be further evaluated as an accurate indicator of shade tolerance when performed in the field on spring days with grasses grown in full sun or 73%shade *** Rd rates and ambient temperatures on spring days appear to minimize unexplained variance in the data,which would allow researchers to better detect genotypic differences during this season.

关键词： breeding field estimating

环境可控农业中基于生物反馈系统的光合作用光照控制方法

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农业工程技术 2016年第28期36卷 24-27页

作者： marc w.van iersel Geoffrey weaver Michael T.Martin Rhuanito S.Ferrarezi Erico Mattos Mark Haidekker 田婧李明 Department of Horticulture University of Georgia Agricultural Experiment Station University of the Virgin Islands PhytoSynthetix LLC College of Engineering University of Georgia 农业部规划设计研究院设施农业研究所北京100125

环境可控农业包括利用温室和室内设施进行农业生产，这种方式在全球农业生产体系中变的越来越重要。完全密闭型植物工厂自20世纪70年代起在日本开始快速发展，目前广泛分布于大都市的郊区。近年来，垂直农场（大型的室内农业生产设施）... 详细信息

环境可控农业包括利用温室和室内设施进行农业生产，这种方式在全球农业生产体系中变的越来越重要。完全密闭型植物工厂自20世纪70年代起在日本开始快速发展，目前广泛分布于大都市的郊区。近年来，垂直农场（大型的室内农业生产设施）也受到越来越多的关注。这类设施不仅可以有效解决人口快速增长带来的粮食短缺问题，还能减少农业生产对环境的影响。

关键词：农业生产光照控制光合作用反馈系统环境可控生物室内设施

CURDIS:A template for incremental curve discretization algorithms and its application to conics

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虚拟现实与智能硬件（中英文） 2024年第5期6卷 358-382页

作者： Philippe LATOUR marc van DROOGENBROECK Montefiore Institute University of LiègeQuartier Polytech 1Allée de la découverte 104000 LiègeBelgium

we introduce CURDIS,a template for algorithms to discretize arcs of regular curves by incrementally producing a list of support pixels covering the *** this template,algorithms proceed by finding the tangent quadrant at each point of the arc and determining which side the curve exits the pixel according to a tailored *** two elements can be adapted for any type of curve,leading to algorithms dedicated to the shape of specific *** the calculation of the tangent quadrant for various curves,such as lines,conics,or cubics,is simple,it is more complex to analyze how pixels are traversed by the *** the case of conic arcs,we found a criterion for determining the pixel exit *** leads us to present a new algorithm,called CURDIS-C,specific to the discretization of conics,for which we provide all the ***,the criterion for conics requires between one and three sign tests and four additions per pixel,making the algorithm efficient for resource-constrained systems and feasible for fixed-point or integer arithmetic *** algorithm also perfectly handles the pathological cases in which the conic intersects a pixel twice or changes quadrants multiple times within this pixel,achieving this generality at the cost of potentially computing up to two square roots per *** illustrate the use of CURDIS for the discretization of different curves,such as ellipses,hyperbolas,and parabolas,even when they degenerate into lines or corners.

关键词： Computer graphics Curve discretization Conics Rasterization Ellipse drawing Conic spline Conic pencil

Bilinear Forms for the Recovery-Based Discontinuous Galerkin Method for Diffusion

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Communications in Computational Physics 2009年第2期5卷 683-693页

作者： marc van Raalte Bram van Leer Centrum voor wiskunde en Informatica P.O.Box 940791090 GB AmsterdamThe Netherlands w.M.Keck Foundation Laboratory for Computational Fluid Dynamics Department of Aerospace EngineeringThe University of MichiganAnn ArborMI 48109-2140USA

The present paper introduces bilinear forms that are equivalent to the recovery-based discontinuous Galerkin formulation introduced by van Leer in *** recovery method approximates the solution of the diffusion equation in a discontinuous function space,while inter-element coupling is achieved by a local L_(2)projection that recovers a smooth continuous function underlying the discontinuous *** we introduce the concept of a local“recovery polynomial basis”–smooth polynomials that are in the weak sense indistinguishable from the discontinuous basis polynomials–and show it allows us to eliminate the recovery *** recovery method reproduces the symmetric discontinuous Galerkin formulation with additional penalty-like terms depending on the targeted accuracy of the *** present the unique link between the recovery method and discontinuous Galerkin bilinear forms.

关键词： Diffusion equation discontinuous Galerkin methods recovery basis L_(2)projection

Immunotherapy with immune checkpoint inhibitors in colorectal cancer:what is the future beyond deficient mismatch-repair tumours?

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Gastroenterology Report 2020年第1期8卷 11-24,I0001页

作者： Nicolas Huyghe Pamela Baldin marc van den Eynde Institut de Recherche Clinique et Expe´rimentale(Pole MIRO) UCLouvainBrusselsBelgium Department of Pathology Cliniques Universitaires St-LucInstitut Roi Albert IIBrusselsBelgium Department of Medical Oncology Cliniques Universitaires St-LucInstitut Roi Albert IIBrusselsBelgium

Following initial success in melanoma and lung tumours,immune checkpoint inhibitors(ICIs)are now well recognized as a major immunotherapy treatment modality for multiple types of solid *** colorectal cancer(CRC),the small subset that is mismatch-repair-deficient and microsatellite-instability-high(dMMR/MSI-H)derive benefit from immunotherapy;however,the vast majority of patients with proficient MMR(pMMR)or with microsatellite stable(MSS)CRC do *** and the consensus molecular subtype classifications are promising biomarkers in predicting therapeutic efficacy in selected *** pMRR/MSS CRC,biomarkers are also needed to understand the molecular mechanisms governing immune reactivity and to predict their relationship to *** continuous development of such biomarkers would offer new perspectives and more personalized treatments by targeting oncological options,including ICIs,which modify the tumour-immune *** this review,we focus on CRC and discuss the current status of ICIs,the role of biomarkers to predict response to immunotherapy,and the approaches being explored to render pMMR/MSS CRC more immunogenic through the use of combined therapies.

关键词： colorectal cancer immunotherapy immune checkpoint inhibitors immune response immunoscore

Prediction of tensile power law creep constants from compression and bend data for ZrB_(2)-20 vol% SiC composites at 1800℃

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Journal of Advanced Ceramics 2017年第4期6卷 304-311页

作者： Ali KHADIMALLAH marc w.BIRD Kenneth w.wHITE Department of Mechanical Engineering University of HoustonHoustonTXUSA

Here we consider our four-point flexure and compression creep results obtained under Ar protection at 1800℃ to predict the tensile creep behavior of a ZrB_(2)-20 vol%SiC ultra-high temperature *** power law creep,and based on four-point bend data,we estimated the uniaxial creep parameters using an analytical method present in the *** predicted and experimental compressive stress exponents were found to be in excellent agreement,1.85 and 1.76 respectively,while observation of the microstructure suggested a combination of diffusion and grain boundary sliding creep mechanisms in *** with the microstructural evidence associated with the tensile regions of the flexure specimens,the predicted tensile stress exponent of 2.61 exceeds the measured flexural value of *** assert an increasing role of cavitation to the creep strain in pure *** cavitation component adds to the dominant grain boundary sliding mechanism as described below and elsewhere for flexural creep.

关键词： power law creep parameters four-point flexure compression tension creep mechanisms

Implementing a DIKw model on a deep mine cooling system

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International Journal of Mining Science and Technology 2019年第2期29卷 319-326页

作者： Jan Gabriel Pretorius marc John Mathews Philip Maré Marius Kleingeld Johann van Rensburg Centre for Research and Continued Engineering Development North-West University Pretoria 0081 South Africa TEMM International (Pty) Ltd

The South African mining industry has been experiencing increasing economic pressure. Deep mines also suffer from very hot workplaces, which leads to safety risks. These factors place stress on managers to reach their production targets while providing safe workplace conditions. The data information knowledge wisdom(DIKw) model, also known as the wisdom hierarchy, was implemented on a deep mine cooling system. This study aims to show that a simple model such as the DIKw model can assist managers in improving their deep mine cooling system's performance. The study found that the DIKw approach is a suitable approach for use on mine cooling systems to facilitate operational *** the DIKw approach to a case study on a mine cooling system created substantial awareness and facilitated a cooling duty improvement of 55% which relates to an increase of 5.3 Mw of refrigeration. The results of this study indicate that the DIKw approach may be a suitable approach to optimise management on deep mines using their existing infrastructure.

关键词： DIKw Cooling system Mining Reporting

ANALYZING MARKET COMPETITION BETwEEN AIRBUS AND BOEING USING A DUO HIERARCHICAL GRAPH MODEL FOR CONFLICT RESOLUTION

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Journal of Systems Science and Systems Engineering 2017年第6期26卷 683-710页

作者： Shawei He Keith w. Hipel D. marc Kilgour 1.College of Economics & Management Nanjing University of Aeronautics and Astronautics Nanjing 211106 China 2.Department of Systems Design Engineering University of Waterloo Waterloo Ontario Canada N2L 3G1 3.Centre for International Governance Innovation Waterloo Ontario Canada N2L 6C2 4.Balsillie School of International Affairs Waterloo Ontario Canada N2L 6C2 5.Department of Mathematics Wilfrid Laurier University Waterloo Ontario Canada N2L 3C5

A duo hierarchical graph model for conflict resolution is developed to investigate market competition between Airbus and Boeing over aircraft sales in the Asia Pacific region. The duo hierarchical graph model, a significant extension of the graph model for conflict resolution methodology, contains two common decision makers, who take part in two related subconflicts, as well as local decision makers, who participate in only one subconflict. New stability definitions are proposed to describe forms of sanction unique to the hierarchical model. The interrelationships between stabilities in the overall graph model and in the two local models are investigated. Then the duo hierarchical graph model is applied to the competition between Airbus and Boeing in both the wide and narrow body markets in the Asia-Pacific region. The two types of Asian airlines have different operating strategies, so that the two markets constitute sub-competitions that can be modelled naturally using the duo hierarchical graph model. The stability results indicate a resolution for all decision makers that implies marketing strategies for the aircraft manufacturers and guidelines for aircraft purchase by the airlines. Thus, this model provides decision makers with a comprehensive understanding of the dynamics of the comoetition and guidance in identifving beneficial actions.

关键词： Hierarchical Graph Model Airbus and Boeing stability results strategic resolutions

Two-stage revision arthroplasty for coagulase-negative staphylococcal periprosthetic joint infection of the hip and knee

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world Journal of Orthopedics 2019年第10期10卷 348-355页

作者： Ewout S Veltman Dirk Jan F Moojen marc L van Ogtrop Rudolf w Poolman Department of Orthopaedic and Trauma Surgery OLVGJoint Research OLVGAmsterdam 1091ACNetherlands Department of Orthopaedic Surgery Leiden University Medical CentreLeiden 2333ZANetherlands Department of Medical Microbiology OLVGAmsterdam 1091ACNetherlands

BACKGROUND Periprosthetic joint infections(PJIs)are frequently caused by coagulase-negative Staphylococci(CoNS),which is known to be a hard-to-treat *** resistance among causative pathogens of PJI is ***-stage revision is the favoured treatment for chronic CoNS infection of a hip or knee *** hypothesised that the infection eradication rate of our treatment protocol for two-stage revision surgery for CoNS PJI of the hip and knee would be comparable to eradication rates described in the *** To evaluate the infection eradication rate of two-stage revision arthroplasty for PJI caused by *** All patients treated with two-stage revision of a hip or knee prosthesis were retrospectively *** with CoNS infection were included in the study,including polymicrobial *** outcome was infection eradication at final *** Forty-four patients were included in the ***-nine patients were treated for PJI of the hip and fifteen for PJI of the *** final follow-up after a mean of 37 mo,recurrent or persistent infection was present in eleven *** PJI with CoNS can be a difficult to treat infection due to increasing antibiotic *** eradication rate of 70%-80%may be achieved.

关键词： Periprosthetic joint infection Two-stage revision Knee arthroplasty Hip arthroplasty Coagulase-negative Staphylococcus