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许德存 《粮油仓储科技通讯》2006,(5):27-31
本系统采用灵敏度、精确度高的数字传感器，对粮情实行自动巡检、定时检测，数据在库区内采用无线传输方式，远程采用广域网传输，提出了标准化数据接口，引入GIS功能，对所管辖的其他库点的粮情即时掌握，实现粮情检测远程监控。 相似文献
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将太阳能无线数字式粮情测控系统与模拟型粮情测控系统做了优劣对比,介绍了该太阳能无线数字式粮情测控系统的相关技术。 相似文献
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本文论述了CLD——Ⅱ型粮情检测系统及其工作特点。该系统具有巡迥检测、任意检测、超限测量、存储和分析、故障检测等功能,且具有较好的性能价格比。该系统的采用将大大提高国内粮食仓储系统储藏环节的粮情快速检测水平。推进粮食仓储企业管理的规范化和现代化。 相似文献
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在广泛调查国内外微机测温系统应用情况的基础上，结合我国粮情检测的需要，完成了微机测温测湿数据采集与传输系统的研究，系统具备了快速、稳定、准确采集传输测温信息的功能，较好的解决了抗环境干扰、抗雷击等技术难题。 相似文献
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在广泛调查国内外微机测温系统应用情况的基础上 ,结合我国粮情检测的需要 ,完成了微机测温测湿数据采集与传输系统的研究 ,系统具备了快速、稳定、准确采集传输测温信息的功能 ,较好地解决了抗环境干扰、抗雷击等技术难题。 相似文献
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及时准确掌握粮情变化规律是做好储粮管理的重要条件和手段,对于监管任务量大、监管范围广的中储粮直属库而言,一套行之有效的远程监控系统对其掌握外租库点储粮粮情变化情况起着至关重要的作用。中央储备粮北京密云直属库利用远程无线监控系统有效解决了直属库监管力量不足的问题,大大提高了监管工作效率,取得了良好的效果。 相似文献
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本文针对目前我国部分中央储备粮库的测温系统在使用过程中出现的问题，对OPI粮情检测系统的使用系统地进行了介绍，并通过与同类测温系统产品进行的多方面比较，阐述了粮情检测系统的维护与管理。 相似文献
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新型无线手持检测系统在粮库中的应用 总被引：1，自引：0，他引：1
1试验原理
科学储粮技术的发展需要适合的数据采集设备的支持,开发无线手持检测系统的目的是为了给储粮科学试验提供可靠的依据,同时为日常保管工作提供方便快捷的服务,以便及时、准确掌握粮情。 相似文献
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The potential interactions among governmental policies, investments andeconomic growth are complex and manifold. This paper will perform a systematic comparative analysis of the various economic insights that are currently available on these complex relationships, both theoretically (by a selective literature review) and empirically (by reviewing the empirically obtained insights). Despite the wide variety of potential theoretical relationshipsbetween government expenditures, taxation and growth, most empirical analyses are restricted to simple linear regressions of growth on some measure of government expenditures. We will indicate directions for future empirical research that may enrich our knowledge about the complex relationship between fiscal policies and economic growth, not only nationally but also regionally. 相似文献
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With the characteristic of dissclution of copper salts,the contert of S2-is indi-rectly figared out precipitating the S2-dding excess cpper salt and determining the left Cu2+ by theexlectrogravimetric analysis.This methed is accurate to be employed to measure directly the S2-con-tent in a complex system of mucti-valence sulfides,expecially whin the S2-content is high. 相似文献
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大豆弹性模量的测量与研究 总被引：7，自引：1，他引：6
利用TA.XT plus物性质构测试仪,对一百粒内蒙古产大豆进行受力、变形与面积的测量,根据胡克定律计算出弹性模量(E),测算出大豆的平均弹性模量为20.39MPa,并对弹性模量与有效面积(A)、弹性模量与载荷(F)的相关范围以及异常的豆样进行了分析讨论。 相似文献
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Jean‐Michel Sourisseau Pierre‐Marie Bosc Séverine Bouard Catherine Gaillard Jean‐François Bélières Michel Passouant 《Asia Pacific viewpoint》2014,55(3):355-369
Policies designed for sustainable development are becoming ever more complex and ambiguous. Assessments should thus incorporate development representations and values, rather than only relying on economic and financial normative indicators. This paper proposes a conceptual framework that acknowledges the plurality of the various stakeholders' viewpoints. We suggest that evaluation of grassroots development policies could provide an innovative and more integrative way to measure development by broadening the scope to encompass both livelihood and welfare dimensions. Based on the assessment of a development scheme in New Caledonia, we argue that this cognitive and shared approach could be used to obtain a contextualised measurement of development. Two conditions further strengthen this approach: combining the use of different types of measurement tools, and adopting a rigorous quantitative measurement approach, in line with the collective representations. This promising approach may be applied to gain insight into the ability of implemented policies to address local development choices. 相似文献
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介绍了"食品质量安全检测新技术"教学改革,利用OBE理念对"食品质量安全检测新技术"教学过程中的引导作用,对教学内容、教学方法、教学手段及评价体系等方面进行了改革。改革能持续改进"食品质量安全检测新技术"教学质量,并提高学生自主学习能力、创新能力和解决复杂工程问题的能力。 相似文献
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粮仓温度的传统测试方法存在硬件结构复杂、电气元件过多,可靠性低等缺点。本文根据测量得到的有限个典型的离散温度数据,利用最小二乘法拟合出粮仓温度在其空间坐标上的分布函数,从而可以较精确地估计粮仓内任一点的温度值,大大节约了硬件资源,方便了测量工作。 相似文献
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《Soil Technology》1996,8(4):287-292
Ion exchange reactions which occur between the soil and synthetic resin surfaces have been used to approximate nutrient movement and uptake by plants. Similar exchange principles govern the proportion of sodium which will exist on the soil exchange. This study investigated the use of a cation exchange membrane (CEM) in estimating the sodicity of soil. For soils ranging in salinity from non to extremely saline, the saturated paste extractable sodium was not well related to the CEM exchangeable amounts. However, the sodium adsorption ratio (SAR) was closely related to the CEM exchangeable Na (r2 = 0.95), suggesting a link between Na on the soil exchange complex and that adsorbed by the CEM. The factors which control the ion exchange dynamics of the soil exchange complex appear to similarly control cation exchange onto the CEM. This premise was used as the basis for a simplified measure of exchangeable sodium percentage (ESP). Sodium occupying the CEM, expressed as a percentage of the entire CEM capacity, showed a one to one correspondence with ESP measured using standard methods (r2 = 0.91). Exchange membranes, therefore, offer a simple and rapid method of assessing soil sodicity. 相似文献
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The precise measurement to risks is principal for the effective risk management,both major in theory and practice.Value-at-Risk,a widely accepted risk measure,has some deadly deficiencies.The authors introduce a new risk measure,Conditional-Value-at-Risk,which comes into being based on the VaR measure. They introduce CVaR's definition and the risk-measuring model on it and also its applications in portfolio management,comparatively with VaR measure. 相似文献
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An improved Sage-Husa adaptive filter algorithm is proposed based on the existing methodologies in light of the complex and changing environment of the industrial online measurement. This algorithm,after a new observed value is obtained,first judges whether the filter is in a normal state by the filtering divergence criterion,if not,it judges whether the new observed value is an outlier and takes countermeasures varying with the judgment so as to improve the performance of the Sage-Husa algorithm in industrial measurement. The result indicates that compared with traditional methodologies,this new algorithm is applicable to measure the location of the center point of laser beam in a simulated industrial environment,makes accurate judgment about the system status,features better precision,practicality and robustness and thus can satisfy the requirements of industrial online measurement. 相似文献