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39篇 您的检索式:作者名="Velthuizen"
    题名 作者 年代 出处 被引量
1LIVESTOCK PRODUCTION PLANNING UNDER ENVIRONMENTAL RISKS AND UNCERTAINTIES显示文摘In this paper we demonstrate the need for risk-adjusted approaches to planning expansion of livestock production. In particular, we illustrate that under exposure to risk, a portfolio of producers is needed where more efficient producers co-exist and cooperate with less efficient ones given that the latter are associated with lower, uncorrelated or even negatively correlated contingencies. This raises important issues of cooperation and risk sharing among diverse producers. For large-scale practical allocation problems when information on the contingencies may be disperse, not analytically tractable, or be available on aggregate levels, we propose a downscaling procedure based on behavioral principles utilizing spatial risk preference structure. It allows for estimation of production allocation at required resolutions accounting for location specific risks and suitability constraints. The approach provides a tool for harmonization of data from various spatial levels. We applied the method in a case study of livestock production allocation in China to 2030.Günther FISCHER Tatiana ERMOLIEVA Yuri ERMOLIEV Harrij van VELTHUIZEN 2006Journal of Systems Science and Systems Engineering2006,15,4:31
2基于AEZ模型的我国农区小麦生产潜力分析显示文摘根据联合国粮农组织(FAO)和国际应用系统分析研究所(IIASA)基于中国1961~1997年的统计资料(经多方校正)共同开发的AEZ模型,运用GIS平台计算了中国41个农作制亚区的小麦生产潜力,并指出了单产最高潜力分布区域。研究结果表明,我国小麦的最高产量潜力约为目前产量的2~3倍。这对我国小麦高产育种及栽培具有重要意义。蔡承智 Harrij van Velthuizen Guenther Fischer Sylvia Prieler 2007中国生态农业学报2007,15,5:18
3基于AEZ模型我国农作制区划的玉米产量潜力分析显示文摘根据联合国粮农组织(FAO)和国际应用系统分析研究所(IIASA)基于中国1961 ̄1997的统计资料(经多方校正)共同开发的AEZ模型,运用GIS平台计算了中国41个农作制亚区的玉米生产潜力,并指出了单产最高潜力分布区域。研究结果表明:我国玉米的最高产量潜力大约是目前产量的2.5倍,这对我国玉米高产育种及栽培具有重要参考意义。蔡承智 Harrij van Velthuizen Guenther Fischer Sylvia Prieler 2006玉米科学2006,14,4:14
4基于AEZ模型的我国大豆产量潜力的农作制区划分析显示文摘根据联合国粮农组织(FAO)和国际应用系统分析研究所(IIASA)基于中国1961~1997年的统计资料(经多方校正)共同开发的AEZ模型,运用GIS平台研究了中国41个农作制亚区的大豆生产潜力,以及单产和总产最高潜力分布区域。研究结果表明:我国大豆的最高单产潜力大约是目前产量的2~3倍。单产潜力主要分布在鲁西平原鲁中丘陵、黄淮平原南阳盆地及汾渭谷地,总产潜力主要分布在三江平原、黄淮平原南阳盆地及松辽平原。蔡承智 Harrijvan Velthuizen Guenther Fischer Sylvia Prieler 2006河南农业科学2006,35,5:6
5基于AEZ模型的我国水稻产量潜力的农作制区划分析显示文摘本文根据联合国粮农组织(FAO)和国际应用系统分析研究所(IIASA)基于中国1961—1997年的统计资料(经多方校正)共同开发的AEZ模型,运用GIS平台计算了中国41个农作制亚区的水稻生产潜力,并指出了单产最高潜力分布区域。研究结果表明:我国水稻的最高产量潜力大约将是目前产量的2倍。这对我国水稻高产育种及栽培具有重要参考意义。蔡承智 Harrij van Velthuizen Guenther Fischer Sylvia Prieler 2006种子2006,25,2:5
6基于AEZ模型的我国马铃薯产量潜力的农作制区划分析显示文摘根据联合国粮农组织(FAO)和国际应用系统分析研究所(IIASA)基于中国1961~1997年的统计资料(经多方校正)共同开发的AEZ模型,运用GIS平台计算了中国41个农作制亚区的马铃薯生产潜力,并指出了单产最高潜力分布区域。研究结果表明:我国马铃薯的最高产量潜力大约将是目前产量的2~3倍。这对我国马铃薯高产育种及栽培具有重要参考意义。蔡承智 Harrij van Velthuizen Guenther Fischer Sylvia Prieler 2006中国马铃薯2006,20,4:5
7Global hot-spots of heat stress on agricultural crops due to climate change显示文摘Edmar I. Teixeira Guenther Fischer Harrij van Velthuizen Christof Walter Frank Ewert 2011Agricultural and Forest Meteorology2011,,:2
8MRI segmentation: methods and applications显示文摘Clarke L P Velthuizen R P Camacho M A 1995Magnetic Resonance Imaging1995,13,3:1
9Application of fuzzy c-means segmentation technique for tissue differentiation in MR images of a hemorrhagic glioblastoma multiforme显示文摘Phillips W E Velthuizen R P Phuphanich S 1995Magnetic Resonance Imaging1995,13,2:1
10Breast and ovarian cancer risks in a large series of clinically ascertained families with a high proportion of BRCA1 and BR- CA2 Dutch founder mutations显示文摘BROHET RM VELTHUIZEN ME HOGERVORST FBL 2014Journal of Medical C:netics2014,51,2:1
11Global hot ~ spots of heat stress on agricultural crops due to climate change 显示文摘Teixeira E I Fischer G van Velthuizen H 2013Agriculturaland Forest Meteorology2013,170,:1
12MRI measurement of brain tumor response: comparison of visual metric and automatic segmentation显示文摘Clarke LP Velthuizen RP Clark M 1998Magn Reson Imaging1998,16,:1
13Feature extraction for MRI segmentation显示文摘Velthuizen RP HallL O Clarke LP 1999Neur Imag1999,9,2:1
14MRI segmentation: methods and applications 显示文摘Clarke L P Velthuizen R P Camacho M A 1995Magnetic Resonance Imaging1995,13,3:1
15Applications of fuzzy C-Means segmentation technique for tissue differentiation in MR images of a hemorrhagic glioblastoma multiforme 显示文摘Phillips WE Velthuizen RP Phupanich SL 1995Magn Reson Imaging1995,13,2:1
16Sequential anal- ysis of chromosome aberrations in multiple myeloma dur ing disease progression 显示文摘Wu KL Beverloo B Velthuizen SJ 2007Clin Lymphoma Myeloma2007,7,4:1
17Can China feed itself? An analysis of China's food prospects with special reference to water resources显示文摘Heilig G K Fischer G Van Velthuizen H 2000International Journal of Sustainable Development and World Ecolo-gy2000,7,3:1
18Climatechange impacts on irrigation water requirements: effects of miti-gation, 1990 - 2080 显示文摘Fischer G Tubiello F N Van Velthuizen H 2011Technological Forecasting and SocialChange2011,74,:1
19Global Agro-ecological ZonesAssessment for Agriculture (GAEZ 2008)显示文摘Fischer G Nachtergaele F Prieler S van Velthuizen HT Verelst L Wiberg D 2008HAS A Laxenburg Austria and FAO Rome Italy2008,,:1
20MRI segmentation: methods and applications 显示文摘Clarke L P Velthuizen R P 1995Magnetic Resonance Imaging1995,13,3:1
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