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1.
农产品加工业能够促进城乡产业互动。文章用实证分析方法分析了农产品加工业在成长初期农业的关联最强,与工业和服务业的关联较弱,产业互动的要素主要是自然资源和资本。在成长期,农产品加工业产业集群的趋势增强,产业互动的要素主要是知识和技术。进入成熟期,其与其它产业互动的能力增强,且产业互动的要素更高级、互动模式更多样。文章并以合肥市为例进行阐述。最后提出政府应根据农产品加工业不同发展阶段的特征,出台相应的政策和措施,促进农业结构的调整和农民收入的提高。  相似文献   

2.
Focusing on the problem of computer operation without hand for the disabled people, a new method of mouse control based on visual analysis of the face poses is proposed. First, the face images from CCD camera are obtained and the face areas are located based on AdaBoost algorithms with Haar features. Then, 5 feature points including 2 eye corners, 2 mouth corners and nose tip are detected with image analysis. After that, with help of the feature points in a predefined frontal face image, the face poses are estimated in the real-time face images. Finally, the 3 deflection angles are adopted to define human computer interactive information, which can be used to determine positions and operations of the mouse in the human computer interactive interface. The experimental results demonstrate the efficiency of our method that the face poses can be estimated accurately as well as the operation information to the mouse be achieved rapidly. It is valuable in human computer interaction for the disabled people.  相似文献   

3.
运用农业信息技术原理与方法,结合泰州市郊区实际,开发出了功能全面、内容丰富、现势性强、图形生产力高、界面友好、易于操作的基于Visual Basic 6.0和MapObjects 2.3的泰州市郊区土壤与作物施肥信息系统V1.0。该系统涵盖了数据查询检索、空间分析、精确施肥决策、学习辅助等功能。经试用,系统的功能可用性、功能可靠性、易用性、可扩充性较强,用户满意度较高,可为该地推广应用土壤管理与水稻、小麦精确施肥技术提供辅助决策与智能学习优质平台。  相似文献   

4.
Based on the information system security assurance evaluation framework (GB/T20274),the information system security assurance model and evaluation index system are introduced, and the formalization evaluation method and flow are presented. An information security evaluation model is proposed by applying rough set (RS) and unascertained measure (UM) theory. At the criterion pre process period, rough set theory is used to obtain the key evaluation indexes and construct the reduced index set to simplify the original complex index system. At the evaluation period, unascertained measure model is adopted to analyze the evaluation data to implement a quantitative integration evaluation on the information system security assurance ability.  相似文献   

5.
To solve the problems of the existing expert management information system, such as lack of general standard and lag of technical operation, etc., an Internet-based EMIS expert management information system is designed and implemented by using ASP.NET technology and multi-layer B/S structure mode. The system integrates three functions, i.e. network reporting, online review and automatic management, unifies the expert accreditation procedures and criteria and solves the confusion problem of the expert information structure system. It also reduces complexity and cost of system development, increases integrability and scalability, and provides an effective solution for the construction of national expert management information system.  相似文献   

6.
Visual contrast resolution is lower in the low-light level. A compensation method for low-light image based on no-reference image quality assessment(NR-IQA in short) is presented. A mathematical model for extracting vision evaluation parameters is built. The best image quality assessment function is achieved to assess the quality of compensated image. The third step was to get the relationship between the assessment function and the corresponding compensation factors. The method of automatic optimization can be used to quickly acquire the optimal quality from an be taken from scotopic vision, especially image applied to the compensation of video image sequences rapidly.  相似文献   

7.
8.
甘薯综合加工研究   总被引:3,自引:0,他引:3  
本文在介绍甘薯营养保健功能基础上,简述了甘薯的综合加工技术,并对未来的研究开发重点进行了展望。  相似文献   

9.
10.
基于多模型的农产品供求信息预测系统研究   总被引:1,自引:0,他引:1  
文章介绍了基于多模型的农产品供求信息预测系统的预测模型理论基础、系统总体平台结构、系统功能结构,并重点介绍其主要功能模块,同时,指出了系统实现中解决的关键问题,最后进行总结并提出改进方法。  相似文献   

11.
Quality Management Information System(QMIS) is critical component in enterprise quality system. The enterprise quality management of modern manufacture perform mostly as a dynamic system during continuous change. OMT(Object-oriented Modeling Technique) is adopted in this paper, QMIS is analyzed on the aspects of system analysis, system architecture, object model. The framework architecture of flexible ISO9000-QMIS and the universal feature is presented. With the design of flexibility and expandability, structure and function can be redesigned based on managing instance of enterprises, and satisfy the dynamic requirement of informationlization.  相似文献   

12.
To on line detect, store and process nuclear signals with multiple forms and multiple frequencies, a compatible processing and analyzing system for nuclear signals based on ultrahigh speed data acquisition card was constructed. When the source signal is at pulse form, the system records signal with the mode of time digital converting. When source signal is at continuous form, the system records signal with the mode of analog digital converting. The processing procedures and algorithms were designed for various signal forms. The results for nuclear random process such as correlation function and power spectrum were effectively obtained.  相似文献   

13.
基于行人动力学模型,研究了人桥竖向动力相互作用。行人动力学模型采用以行人步频和体重表示的刚度质量阻尼(SMD)模型,人行桥假定为Euler-Bernoulli梁模型,建立人桥竖向动力相互作用控制方程。采用状态空间法进行非比例阻尼系统瞬时模态的求解,得到系统的时变频率和阻尼比;利用变步长四阶五级Runge-Kutta-Felhberg算法求解时变控制方程,对比分析考虑人桥竖向动力相互作用和只在人行荷载作用下人行桥的动力响应。结果表明:考虑人桥动力相互作用,人行桥自振频率略有降低,阻尼有显著增大;当行人以人行桥的频率行走时,考虑人桥竖向动力相互作用结构的动力响应比不考虑人桥相互作用显著降低。  相似文献   

14.
为探明实现冬小麦进一步增产增效的调控途径,于2015—2016年和2016—2017年连续两个生长季,选用大穗型品种泰农18,设置2种播种方式(宽幅播种和常规条播)和7个种植密度(130×10~4、200×10~4、270×10~4、340×10~4、410×10~4、480×10~4和550×10~4株hm~(–2)),研究了播种方式与种植密度互作对大穗型小麦品种产量和氮素利用率的调控效应。结果表明,与常规条播相比,宽幅播种配合增密能够有效缓解单位面积穗数增加与单穗粒重降低、氮素吸收效率提高与氮素内在利用效率下降之间的矛盾,通过增加单位面积穗数和氮素吸收效率协同提高籽粒产量和氮素利用率。宽幅播种条件下获得最高产量和氮素利用率的密度为410×10~4株hm~(–2),显著高于常规条播条件下的最优密度(340×10~4株hm~(–2)),且其增产增效幅度亦显著高于常规条播。综上所述,宽幅播种配合合理密植具有进一步协同提高大穗型小麦品种产量和氮素利用率的潜力。在本试验条件下,宽幅播种(苗带宽8~10cm)与410×10~4株hm~(–2)密度相匹配是大穗型小麦品种泰农18获得更高产高效的最优组合。  相似文献   

15.
合理的种植方式可以在不增加灌溉耗水量的前提下,利用植物个体间的正相互作用关系和群体适应特点来达到提高作物产量和水分利用效率的目的。通过田间试验,研究了河西走廊黑河中游边缘绿洲区1穴1株、1穴2株和1穴3株种植方式对青贮玉米产量及水肥利用效率的影响。结果表明,1穴2株和1穴3株的地上生物产量均高于1穴1株,1穴2株最高,鲜重为102.9 t/hm~2,比1穴1株提高了29.4%;1穴2株与1穴1株之间存在显著差异(P0.05),1穴3株与1穴1株之间差异不显著(P0.05)。同样,1穴2株和1穴3株的地上生物产量水肥利用效率也均高于1穴1株,1穴2株的水分和氮肥利用效率也均最高,分别为9.3 kg/m~3和342.9 kg/kg;1穴2株与1穴1株之间存在显著差异(P0.05),1穴3株与1穴1株之间差异不显著(P0.05)。在河西走廊边缘绿洲区,采用1穴2株的种植方式能显著提高青贮玉米的地上生物产量和水肥利用效率,可在生产中推广应用。  相似文献   

16.
The importance of human-information system interaction efficiency within enterprise informationization environment is analyzed.The intension of human-information system interaction efficiency is studied from definition,characteristic and evaluation.According to different properties,the influencing factors of human-information system interaction efficiency are divided into five kinds,including human factor,information system factor,management factor,environment factor,and technology factor.On this basis,the concept model of human-information system interaction efficiency is brought forward,and mechanisms of influencing factors to human-information system interaction efficiency are discussed in the model.The analysis indicates: As the core parts of the model,human factor and information system factor determine interaction efficiency directly.Management factor restricts or supports efficiency of human and information system.Environment factor and technology factor bring indirect influence to interaction efficiency by restricting or supporting human factor and information system factor.  相似文献   

17.
Summary An existing database system for seed collections has been augmented by programs providing plans for field experiments, record sheets and adhesive labels for seed packets. Information on accession names and parentage is picked up from the database. At the end of the season information on material seleeted in the trials is automatically added to the database.  相似文献   

18.
六种新农药对稻纵卷叶螟的田间防效评价   总被引:5,自引:0,他引:5  
本文评价了六种新农药对单季稻主害代稻纵卷叶螟的田间防治效果。结果表明,药后5天,5%甲维盐11.25 g(有效含量/公顷,下同)、10%阿维?氟虫双酰胺60 mL和24%氰氟虫腙216 mL对稻纵卷叶螟的防效在95%以上,32%丙溴?氟铃脲288 mL、20%氯虫苯甲酰胺30 mL和14.5%甲维?毒死蜱211.5 mL的防效在73.5%-83.1%。药后12天,丙溴?氟铃脲和氰氟虫腙的防效为74.1%~82.7%,阿维?氟虫双酰胺和氯虫苯甲酰胺的防效为62.9%~65.6%,甲维盐和甲维?毒死蜱的防效在50%以下。药后31天,除丙溴?氟铃脲和氯虫苯甲酰胺还有40%防效外,其它药剂无防效。氰氟虫腙、氯虫苯甲酰胺、阿维?氟虫双酰胺的保叶效果最好,药后5-12天为68.5%~78%,显著高于甲维盐、丙溴?氟铃脲和甲维?毒死蜱(53.3%~69.9%)。药后31天甲维盐和甲维?毒死蜱的保叶效果差在26%以下,其它药剂仍有45%-62%保叶效果。  相似文献   

19.
This paper illustrates the existent of universities. Discussing the necessity for colleges issues in the traditional personnel management system in colleges and and universities to open out HRMIS, the paper puts forward the aims of soft development concerning HRM. According to the practice of the human resource management and exploitation in colleges and universities, the frame and functions and system implement of HRMIS founded on date-base based Web and E2Q business flat roof in universities are brought forward.  相似文献   

20.
水肥“三匀”技术对水稻水、氮利用效率的影响   总被引:1,自引:0,他引:1  
This study included three split-plot designed experiments. Experiments 1 and 2 were conducted in two fields with varied soil fertility and consistent treatment. Two rice varieties (Dexiang 4103, high NUE; Yixiang 3724, low NUE) were set as main plot. The sub-plot contained six nitrogen-water management modes (farmer’s usual management, FU; nitrogen-water coupling management, NWC; methodical nitrogen-water distribution management, MNWD; and their respective nitrogen-free controls). The main plot of Exp.3 was two high NUE varieties (Dexiang 4103, Fyou 498) and two low NUE varieties (Yixiang 3724, Chuanyou 6203); FU, NWC, and MNWD assembled the sub-plot. MNWD adopted the method of increasing frequency and reducing quantity, thus the nitrogen application rate was reduced by 20% compared with NWC and FU, the irrigation water amount was reduced by 20% to 25% compared with NWC, and 42% to 48% compared with FU. The stem number of MNWD changed smoothly and its ear bearing tiller percentage was higher. Compared with NWC and FU, the photo assimilation before anthesis MNWD had less, dry matter transportation before anthesis and high accumulation of assimilate after anthesis. The grain yield of MNWD was similar to that of NWC, while 8.77%-14.18% higher than that of FU. Correlation analysis showed that the dry weight of roots in 10-20 cm and 20-30 cm soil layers were significantly and positively correlated with nitrogen recovery efficiency (NRE), nitrogen agronomy efficiency (NAE), irrigation water production efficiency (IWPE) and water production efficiency (WPE). MNWD had a large amount of root system distributed in the soil layer below 10 cm, which was conducive to the improvement of water and nitrogen utilization efficiency. Compared with NWC and FU, MNWD increased NRE by 8.07%-11.99% and 20.72%-30.78%, NAE by 17.44%-27.38% and 96.47%-101.42%, IWPE by 23.34%-36.67% and 76.54%-117.38%, WPE by 8.41%-17.66% and 32.23%-65.29%, respectively.  相似文献   

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