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爨玮 《农业科研经济管理》2022,(4):43-47
农业科研事业单位的长久稳定发展离不开预算绩效管理的有效开展,作为内部控制建设的重要业务领域,预算绩效管理与内部控制目标一致且相辅相成。文章阐述了内部控制与预算绩效管理之间的关系,分析了农业科研事业单位在预算绩效管理过程存在的问题,并从内部控制视角提出了一系列举措,旨在为农业科研事业单位进一步优化预算绩效管理、提升内部管理水平提供借鉴。 相似文献
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ANDRIJ Z. HORODYSKY DAVID W. KERSTETTER ROBERT J. LATOUR JOHN E. GRAVES 《Fisheries Oceanography》2007,16(3):240-256
Researchers have applied numerous techniques to improve billfish stock assessments, including habitat‐based models that incorporate behavioral and oceanographic parameters to standardize historical catch‐per‐unit‐effort time‐series data. These methods have allowed researchers to account for significant changes in the depths of pelagic longline (PLL) gear deployments over time. This study presents habitat‐use data recovered from high‐resolution 5‐ and 10‐day pop‐up satellite archival tags (PSATs) attached to 47 surviving white marlin released from commercial and recreational fishing gears offshore of the U.S. East Coast, the northern Caribbean, and Venezuela between 2002 and 2004. Data recovered from transmitting tags indicated that white marlin spent nearly half of their time associated with warm, near‐surface waters (<10 m). All fish displayed frequent short duration (mean: 39.8 min) vertical excursions from surface waters to depths averaging 51 m. Qualitative and multivariate classifications of data from completely transmitted movements of surviving white marlin revealed two major types of descents: one pattern was characterized by deep ‘V’‐shaped excursions of relatively short duration (mean: 23.4 min) while the other featured descents that were more broadly ‘U’‐shaped and confined to a specific depth range for an extended period of time (mean: 75.8 min). Based on the frequency, persistence, and patterns of these vertical movements, white marlin appear to direct a considerable proportion of foraging effort well below surface waters, a behavior that may account for relatively high catch rates of white marlin on some deep‐set PLL deployments. 相似文献
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Model uncertainty in the ecosystem approach to fisheries 总被引:2,自引:0,他引:2
Simeon L. Hill George M. Watters ré E. Punt Murdoch K. McAllister Corinne Le Quéré John Turner 《Fish and Fisheries》2007,8(4):315-336
Fisheries scientists habitually consider uncertainty in parameter values, but often neglect uncertainty about model structure, an issue of increasing importance as ecosystem models are devised to support the move to an ecosystem approach to fisheries (EAF). This paper sets out pragmatic approaches with which to account for uncertainties in model structure and we review current ways of dealing with this issue in fisheries and other disciplines. All involve considering a set of alternative models representing different structural assumptions, but differ in how those models are used. The models can be asked to identify bounds on possible outcomes, find management actions that will perform adequately irrespective of the true model, find management actions that best achieve one or more objectives given weights assigned to each model, or formalize hypotheses for evaluation through experimentation. Data availability is likely to limit the use of approaches that involve weighting alternative models in an ecosystem setting, and the cost of experimentation is likely to limit its use. Practical implementation of an EAF should therefore be based on management approaches that acknowledge the uncertainty inherent in model predictions and are robust to it. Model results must be presented in ways that represent the risks and trade‐offs associated with alternative actions and the degree of uncertainty in predictions. This presentation should not disguise the fact that, in many cases, estimates of model uncertainty may be based on subjective criteria. The problem of model uncertainty is far from unique to fisheries, and a dialogue among fisheries modellers and modellers from other scientific communities will therefore be helpful. 相似文献
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李蔚 《农业图书情报学刊》2007,19(2):44-46
以山东师范大学电子资源采购工作小组为例,论述了协作小组的组织结构、要素及原则,阐明了其在图书馆管理中不可缺少的作用。 相似文献
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文章从三个方面对如何提高中文社科纸质型(或印刷型)期刊利用率的管理进行实践探索,取得良好效果进行阐述。 相似文献