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A comprehensive approach for assessing the economic contribution of forage and livestock improvement options to smallholder farming enterprises

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Journal of Integrative Agriculture 2015年第8期14卷 1573-1580页

作者： Neil Mac Leod scott waldron WEN Shi-lin Agriculture Flagship Commonwealth Scientific and Industrial Research Organisation (CSIRO) University of Queensland Red Soils Experimental Station Chinese Academy of Agricultural Sciences

The importance of livestock production activities to improving the livelihoods of smallholder farming households and the efficiency of their underlying farming systems is increasingly recognized.A rapid increase in livestock numbers, especially beef cattle, and special purpose forages is being promoted for smallholder farms which have traditionally undertaken subsistence cropping activities or simple livestock rearing activities using low quality *** limited plantings of specialized forages combined with a poor knowledge of animal nutrition are a challenge to establishing sustainable livestock enterprises, much public policy and research is now being focused on the use of new forages and improved feeding practices.A number of economic studies have suggested that specialized forage growing and livestock feeding activities can make a positive contribution to smallholder *** studies have typically compared the total level of farm or household income with and without livestock *** attention is given to how much the new forage or livestock activities actually contribute to or draw resources from other farm activities to assess their real economic contribution to the enterprise, and the availability of simple tools to assist in making such assessments are *** paper describes a simple modelling approach that was developed for an Australian Centre for International Agricultural Research（ACIAR）-supported project to explore the real as opposed to apparent economic impact of integrating improved forages and livestock within smallholder farming systems in the Red Soils region of south-central *** of the model is demonstrated using a simple case study of a smallholder enterprise that plans to introduce a new beef cattle rearing activity to its existing farm activity *** case study highlights the importance of explicitly valuing transfers of resources between different farm activities to gauge the real contribution o

关键词： smallholder farming systems economics resource transfers opportunity costs economic profit

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Heterogeneity in agricultural households and transition paths in southern Tibet

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Journal of Mountain Science 2022年第5期19卷 1386-1403页

作者： ZHANG Jing BROWN Colin waldron scott YADAV Lava ZHUOGA De-qing School of Agriculture and Food Sciences The University of QueenslandBrisbane 4072Australia Research Institute of Animal Husbandry and Veterinary Medicine Tibet Academy of Agricultural and Animal Husbandry SciencesLhasa 850002China

Smallholder livelihoods in agricultural areas in Tibet Autonomous Region,China(Tibet for short)have traditionally been based on subsistence mixed crop-livestock *** many parts of China and the developing world,rural Tibet is undergoing rapid change in agricultural development,boosted by links with the off-farm ***,the agricultural transition process in Tibet has not been linear,is affected by policies particular to the region,and varies significantly for different categories of rural *** paper analyses heterogeneity of household types in agricultural areas of southern Tibet and how household structures and characteristics result in different agricultural development *** is drawn from a stratified random survey of 144 households in three townships in southern Tibet and analysed through three methods:cluster analysis,bio-economic modelling,and analysis of household perceptions and attitudes to *** analysis allows for the identification of three key household types-semisubsistence,pluriactive and semi-commercial-organised along a continuum of intensification,commercialisation,specialisation and *** study demonstrates the diversity of household farming systems in Tibet which in turn highlights the need for disaggregated analysis and tailored development policies and ***,the analysis also reveals commonalities in development paths between groups,where all farm types are more interested in pursuing income and livelihood goals through an increase in productivity than through an increase in *** in all systems choose to retain agriculture as a base from which to pursue livelihood strategies,especially through off-farm *** for this household heterogeneity is important on several ***,it provides more granular detail on the process of development in rural areas of Tibet that have been very difficult to access in English literature especially in recent ***,the c

关键词： Tibet Households Farming systems Agricultural transition

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Nutrition and Arthritis

Nutrition and Arthritis

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中国畜牧兽医学会养犬学分会第十二次全国养犬学术研讨会

作者： Mark waldron Nestle Research Center st.LouisMO phD

Osteoarthritis (OA) is a chronic degenerative joint disease characterized by progressive carti- lage *** may have different etiologies but similar has similar biologic,mor- phologic,and chnical *** disease processes n...

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A Multi-Objective Optimal Experimental Design Framework for Enhancing the Efficiency of Online Model Identification Platforms

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Engineering 2019年第6期5卷 1049-1059页

作者： Arun Pankajakshan Conor waldron Marco Quaglio Asterios Gavriilidis Federico Galvanin Department of Chemical Engineering University College LondonLondon WC1E 7JEUK

Recent advances in automation and digitization enable the close integration of physical devices with their virtual counterparts, facilitating the real-time modeling and optimization of a multitude of processes in an automatic way. The rich and continuously updated data environment provided by such systems makes it possible for decisions to be made over time to drive the process toward optimal targets. In many man- ufacturing processes, in order to achieve an overall optimal process, the simultaneous assessment of mul- tiple objective functions related to process performance and cost is necessary. In this work, a multi- objective optimal experimental design framework is proposed to enhance the ef ciency of online model-identi cation platforms. The proposed framework permits exibility in the choice of trade-off experimental design solutions, which are calculated online that is, during the execution of experiments. The application of this framework to improve the online identi cation of kinetic models in ow reactors is illustrated using a case study in which a kinetic model is identi ed for the esteri cation of benzoic acid and ethanol in a microreactor.

关键词： Multi-objective optimization Optimal design of experiments Online

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血管平滑肌内皮依赖性超极化:非一氧化氮合成酶产物的作用(英文)

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中国药理学报 1996年第1期17卷 3-7页

作者： Gareth J waldron 董辉 William C COLE Chris R TRIGGLE Smooth Muscle Research Group and Department of Pharmacology & Therapeutics University of Calgary Calgary Alberta T2N 4N1 Canada

The endothelium plays a fundamental role in the blood coagulation cascade and at the site of injury is important in the development, and sequela, of atheroma. It is also now firmly established that endothelial cells can produce both vasorelaxant and vasoconstrictor factors and thus directly influence vascular tone and blood flow. Prostacyelin and NO are both potent vasodilators, and endothelin is a highly potent 21 amino acid peptide vasoconstrictor, which have all been shown to be

关键词：血管平滑肌内皮细胞超极化一氧化氮钾通道

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Influence of harvest date on seed yield and quality in forage kochia

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Frontiers of Agricultural Science and Engineering 2018年第1期5卷 71-79页

作者： Cody F.CREECH Blair L.waldron Corey V.RANSOM Dale R.ZOBELL Joseph Earl CREECH Department of Plants Soils and Climate Utah State University USDA-ARS Forage and Range Research Laboratory Department of Animal Dairy and Veterinary Sciences Utah State University

Forage kochia(Bassia prostrata) is used for rangeland reclamation and livestock and wildlife forage,but limited research has been conducted on its seed production. Therefore, this research evaluated the effect of harvest date on seed weight, germination, and seed yield of forage kochia subspecies virescens and grisea. Seed was harvested from individual plants for 3 years during October, November, and December. October harvest had the lightest 100-seed weights, with the November harvest slightly heavier than December, for most *** Snowstorm and breeding line Sahsel, both subsp. grisea, had the greatest 100-seed weights in November, 155 and 143 mg, respectively, whereas, ***(subsp. virescens), the standard for forage kochia, ranked among the least for 100-seed weight. For most accessions, germination was lowest from the October harvest(11%–43%), with greater germination with November and December harvested seeds(43%–64%).Viable seed yields were greatest in November with the exception of two accessions, which peaked in October,indicating earlier maturity. Results indicate that forage kochia usually reaches optimum seed maturity by early November, after plants are exposed to freezing temperatures; however, earlier maturing accessions exist in both subspecies virescens and grisea.

关键词： forage rangeland seed germination seed quality

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Kinematics, dynamics, and design of machinery / 2nd ed.

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2004年

作者： waldron Kenneth J.

来源：畅想之星图书光盘版（南... 评论

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Kinematics, dynamics, and design of machinery

Kinematics, dynamics, and design of machinery

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1999年

作者： waldron Kenneth J.

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立法的尊严

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2019年

作者： (美)杰里米·沃尔德伦(Jeremy waldron)

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根治术后病理T3期或切缘阳性前列腺癌的辅助放疗的系统综述和荟萃分析

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中国癌症杂志 2009年第2期19卷 83-84页

作者： Morgan SC waldron TS Eapen L 秦晓健单位不详

研究背景：前列腺癌是西方国家男性最常见的非皮肤来源恶性肿瘤,病死率排第二位。根治性前列腺切除（RP）是临床局限性前列腺癌标准的外科治疗手段。然而,术后病理诊断发现肿瘤侵出前列腺包膜（pT3）或者切缘阳性（R1）的患者预后不佳,... 详细信息

研究背景：前列腺癌是西方国家男性最常见的非皮肤来源恶性肿瘤,病死率排第二位。根治性前列腺切除（RP）是临床局限性前列腺癌标准的外科治疗手段。然而,术后病理诊断发现肿瘤侵出前列腺包膜（pT3）或者切缘阳性（R1）的患者预后不佳,5年生化疾病进展率高达67%。目前接受RP手术的患者中约有50％会碰到以上至少一种情况。

关键词：局限性前列腺癌术后病理诊断切缘阳性根治性荟萃分析系统综述辅助放疗 T3期

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