基于组合优化理论设计单钻头打孔机生产效能模型

对孔型加工及走刀方式进行分析,基于离散空间的组合优化理论建立了求解最短路径与刀具转换的动态优化模型,并利用Matlab软件结合蚁群算法研究了该类问题的常用求解算法.从而设计出单钻头作业的在最短行进时间和最少作业成本前提下的最优作业线路,即刀具转换方案.

综采放顶煤工作面生产效果计算机模拟研究

为了预测综采放顶煤工作面的生产效果 ,优化采煤工艺方式 ,根据目前综采放顶煤的工艺过程 ,研制开发了综采放顶煤工作面生产效果计算机模拟模型 ,并在生产实际中进行了应用 。

基于退火算法的生产效能最优化

实际生产中有大量工艺过程与加工路线有关,在工件上寻求最短的加工路线能极大地提高生产效能。试图求解印刷线路板(PCB)多类型孔加工过程的生产效能最优解。通过建立生产效能函数并进行分析,认为在生产条件一定的情况下换刀时间和加工路线是影响生产效能的两个主要因素。换刀时间与刀具的加工顺序有关,而加工路线本质是旅行商问题(TSP),用退火算法求其最优解,最终使生产成本最低。然后通过实例模型证明生产效能函数的可行性。该方法可广泛用于生产实践,尤其对与加工路线有关的生产过程来说,有助于提高生产效率、节约成本。

提高镁电解生产能效的研究

阐述了如何提高镁电解生产能效,提出了通过使用新型电解槽、降低电解温度和加强绝缘等途径可以有效提高镁电解的生产能效。

码头生产能效指数设计

借鉴国际海事组织利用船舶能效营运指数及船舶能效管理计划推动国际航行船舶减少温室气体排放的思想,提出了码头生产能效指数的设想,码头生产能效指数能够有效衡量港口经营人节能工作开展水平,为深入开展码头生产能效指数的研究和未来实施港口能效管理计划奠定了基础。

卷烟企业生产综合能效管理和烟草企业管理探索

当今,我国众多企业都在不断地改革和发展,烟草工业公司也不例外,而在改革发展期间,可以发现,部分卷烟厂存在着一些明显的问题,其中最为重要和明显的问题便是生产综合能效比较低。如果不能及时、有效地解决和处理这一问题,将会严重影响卷烟厂的经济效益和未来发展。鉴于此,本文先重点结合生产综合能效管理的相关理论基础进行分析和研究,进而有针对性地进行相关措施的探讨,进而为相关人员提供一些参考。

基于生产降本提效的船舶焊缝设计优化

为降低生产成本及提高施工效率,结合现有生产工艺的特点,通过研究入级船级社规范对焊缝设计的要求,考虑焊缝设计的经济性及可操作性,建立有效的焊缝设计优化工作机制,在详细设计阶段和生产设计阶段实现焊缝设计优化。优化的焊缝设计可充分利用现有资源,减少额外的生产投入,降低生产综合成本。将降低施焊难度及推广自动焊的设计理念融入焊缝设计中,在提高焊接效率的同时,产品焊缝的焊接质量特别是外观成形质量可得到保证,减少焊缝的补焊及打磨工作,提高产品的整体生产效率。

大型矿石码头生产能效分析系统

为提升矿石码头能效管理水平,建立大型矿石码头生产能效分析系统。系统依据现有矿石码头装卸流程和能效精细化管理需求,引入物联网相关技术,集能源数据采集、分析于一体,实现矿石码头生产能效的在线分析和能耗预警的目标。

加强精益生产管理提高企业经济效益

随着近年来企业管理水平的不断进步,精益生产管理开始被提出并迅速受到关注。企业通过尝试摸索,精益生产管理模式相比于传统的管理模式,能够解决很多新的问题或难题,尤其是可通过缩短生产过程时间和作业时间转换时间、推行标准作业、开展作业改善等各项措施,达到生产提效、降低安全风险的目的。文章着重讲述精益生产管理在提高企业经济效益中取得的实际效果。希望通过本文的论述,有益于企业管理水平的稳步上升。

采用“热还原气体”工艺提高炼铁能效

为了保证炼铁和转炉炼钢动力能耗的降低，迫切要求高炉生产实现节能工艺。在喷吹热还原性气体工艺条件下，进行了提高高炉生产率和降低焦比的计算和工业试验，分析了高炉煤气压缩前后还原性气体的组成和结构，研究了去除CO2清洁流程和高炉煤气循环工艺，确定了喷吹热还原性气体工艺的经济效果和能量效率，可保证提高炼铁生产能效40％。

落地式服务助力中国制剂企业实质提升(续篇)

第四站:山东联合农药工业有限公司农药制剂加工和分装专家诊断和提升活动日前在山东继续展开,11月30日,中国农药工业协会农药工程技术中心专家团队来到活动第四站——山东联合农药工业有限公司。山东联合正在着力于打造国内顶级农药制剂加工基地,公司投入巨资用于制剂加工和分装,旨在实现终端产品的市场推广和提升。

Heterosis Analysis of Nitrogen Use Efficiency for Grain Production of Brassica napus L.

[Objective]The aim was to study heterosis of N use efficiency for grain production （NUEg） of Brassica napus L. and provide theoretical basis for breeding N-efficient cultivars. [Method]Dry matter production and N content of six B.napus parents （Zheshuang 3,Yangyou 7,ZJ1,Shilijia,Ningyou 14 and Huyou 16） and their F1 combinations from 6 × 6 complete diallel cross in maturity stage under two N levels were measured; heterosis of NUEg,combining ability and heritability size were analyzed and calculated. [Result]The results showed that NUEg has obvious heterosis; combining ability variance analysis indicated that NUEg was mainly controlled by additive,dominant and cytoplasmic effects; genetic variance analysis showed that additive effects and dominance effects were all significant in low nitrogen fertilizer and dominance effects were significant in high nitrogen fertilizer. [Conclusion]NUEg of B.napus has obvious heterosis.

Effects of SPAD Decline Value of Mid-season Hybrid Rice Leaves after Full-heading Stage on Productivity of Rice Fertilized with Nitrogen

[Objective] The aim was to research relationship between SPAD decline index after full-heading stage （SDIFHS） and productivity of rice. fertilized with nitro- gen in order to provide theoretical and practical references for selection and breed- ing of rice varieties. [Method] From 2008 to 2010, 18 mid-season hybrid rice vari- eties were researched every year to explore relationship＇ between SDIFHS and pro- ductivity of rice fertilized with nitrogen. [Result] The productivity of rice fertilized with nitrogen was of extremely significant positive corretation with SDIFHS, because the higher SPAD decline index is, the higher LAI decline index and the transformation ratio of dry matter to spikes in overground plant would be. [Conclusion] The re- search established a new method to predict productivity of rice fertilized with nitro- gen based on SPAD decline index.

A Summary of Ratoon Rice Production Technology in Southwest Ecotope of China

This paper focus on the ratoon rice, which with the features of south Chi-na paddy cultivation technology. First, the development of the technology research on ratoon rice in southwest ecotope of China was briefly reviewed. Second, the key technical measures of the ratoon rice production were described in detail. At last, the application effect of the ratoon rice production technology was described accu-rately, which based on the production practice in recent years. The purpose of this article is promoting the research and extension of the ratoon rice technology more widely in world’s main rice-producing areas, especial y in the suitable area where the light and heat resources are rich.

Production Efficiency of Four Main Crops in the Decade in Hunan Province

The research explored productive efficiencies of main crops in the decade in Hunan by nonparametric DEA method and the results showed that net output value and net-profit rate of potato and sweet potato were extremely higher than those of rice and maize, and comprehensive efficiencies from high to low were potato, rice, sweet potato and maize. It is recommended that scales of rice, maize, and sweet potato should be reduced to certain extent and the scale of potato pro- duction extended. Besides, direct fee and labor cost should be lowered as much as possible to improve net-profit rate, accelerate crop S＆T development and improve grain productive efficiency.

Production Performance and Development Strategies of Double-cropping Rice in Hunan Province

ln the research, an empirical analysis was performed on production per-formance and influential factors of rice in Changsha County and Liling City. The re-sults showed that production scale has been closely linked to age and education level of farmers. The larger scale, the higher comprehensive performance, but rele-vant efficiency tends to be lower. Sowing area and yield per unit area are major in-fluential factors of production performance of double-cropping rice, but the rest influ-ential factors are different upon production scale. Final y, developmental strategies are proposed for development of double-cropping rice.

Analysis of Factors of Production for Rice Farmers and Research of Development Countermeasures——A Survey of 565 Farm Households in Hunan Province and Zhejiang Province

[Objective] The aim was to analyze economic benefits of rice farmers and influential factors in China. [Method] Based on data of rice production in 565 farm households in 2009, correlation analysis was conducted on characters of households, input/output of rice production, condition and environment of rice production, related policies and activities with SPSS. [Result] Yield per mu, production cost, and rice price were dominant factors influencing economic benefits of rice farmers; labor force in a household, training of rice cultivation, machine rice production and rice cropping had significant effects on benefits from rice production; area of rice, family educa- tion, on-time field management, site instruction, and demonstration fields all had in- significant effects on economic benefits of rice. In addition, suggestions were pro- posed about choice of production scale, implementation of rice policies, measures of subsidy, and purchase price of rice. [Conclusion] The research provides references for rice production and improvement of economic benefits of rice farmers.

Effects of Different Management Modes on Yield and Nutrient Efficiency of Ginger

In order to establish high-yield and high-efficient cultivation technology for ginger in the central region of Shandong Province, the effects of different manage-ment modes on yield of ginger, nutrient efficiency and soil nitrate were carried out by field experiment. Four management modes were farmer convention mode, high yield and high efficiency mode, super high yield mode and super high yield and high efficiency mode, in which farmer convention mode was local farmers ’ conven-tional cropping methods, the other three management modes were optimized combi-nations of al management measures under a certain goal of increasing yield and efficiency. The results were as fol ows： ginger yield and nitrogen fertilizer efficiency under such three optimized management measures combinations as high yield and high efficiency mode, super high yield mode and super high yield and high efficien-cy mode were al higher than these of farmer convention mode, moreover, com-pared with farmer convention mode, the yield increased by 11.85%, 25.75% and 23.34%, respectively, and nitrogen fertilizer efficiency increased by 47.94%, 11.24%and 33.14%, respectively. Thereinto, the yield under super high yield mode were the greatest,and nitrogen fertilizer efficiency under high yield and high efficiency mode was the highest.

Ecological Geochemistry of Selenium in the Production Base of Zhangqiu Green Chinese Onion

Based on the achievement of local ecological geochemical survey,the selenium in surface layer soil of Zhangqiu green Chinese onion within production area is systematically studied in this study.And the ecological geochemical characters of selenium both in surface layer soil and in green Chinese onions are analyzed,and the relationship between the selenium in plant and soil is discussed.The results show that soil in Zhangqiu is rich in selenium,and it is suitable to develop the selenium-rich green Chinese onion products.

Pattern Change and Regional Disparity Tendency of Cultivated Land Use in Jiangsu Province

The study has examined the tempo-spatial patterns of cultivated land use change in Jiangsu province. A principal component analysis （PCA） of 18 selected indicators of cultivated land use during the period 1970-2010 identified 2 main pat- terns of change in planting productivity and economic efficiency. A major shift from production-centered pattern to profit-oriented one occurred in 1984, the time of grain yield surplus and the mitigation of population pressure. In response to the impending Opened Market System, there was a notable tendency of higher efficiency and less productivity since 1997, as well as remarkable regional disparity of cultivated land use change spatially. It revealed a relative decrease in grain cropping share, crop- ping scale and cultivation intensity in South Jiangsu, especially in Tai-Lake region, and the reverse in North Jiangsu. Some suggestions for the future were finally dis- cussed from the above findings.