共查询到19条相似文献，搜索用时 129 毫秒
1.
MATLAB是一种影响大、流行广的科学计算语言,MATLAB的图形用户界面开发环境(GUIDE)支持外部ActiveX控件的使用,利用这一功能可以极大地扩展MATLAB界面设计的灵活性。将MATLAB GUI中的ActiveX控件应用于汽车仪表盘设计,探讨ActiveX控件的使用方法和用该方法设计汽车仪表盘的简便性和可行性。 相似文献
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在今天,大众生活水平的全面优化,加上其健康养生意识的全面成熟,使得诸多能够为大众带来健康生活的元素内容的应用与融合之间实现了深度融合和全面升华。本文拟从茶叶企业图形用户界面外观设计活动的实施背景分析入手,结合图形用户界面外观设计专利保护的具体价值分析,通过探究茶叶企业图形用户界面外观设计专利保护活动的实施诉求,从而探究构建茶叶企业图形用户界面外观设计保护的具体策略。 相似文献
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传统的汽车仪表具有信号线路众多、体积庞大、抗干扰能力差和控制精度较差等缺点。本文通过采用CAN总线技术对混合动力汽车的仪表进行优化设计，有效地改善传统汽车仪表所带来的各种缺点，以达到线路简化、体积减小及工作可靠度提高等目的。 相似文献
4.
茶叶嫩梢采摘末端执行器的设计研究 总被引：1，自引：0，他引：1
为了解决茶叶嫩梢的选择性采摘问题,以茶叶嫩梢的物理学特性为设计依据,设计了一种可夹提式采摘茶叶嫩梢的末端执行器,运用MATLAB软件的GUI模块及SolidWorks软件对采摘末端执行器的结构参数进行优选分析,并获得最佳组合参数,通过运动学仿真分析可行且满足夹持力要求;采摘末端执行器模型在茶园进行采摘试验,结果表明,一芽一叶的漏采率为2.8%、采摘完整率为91%;一芽两叶的漏采率<3%、采摘完整率为94%,试验结果验证该采摘末端的结构设计及其参数切实可行,为茶叶嫩梢的选择性采摘提供理论依据,并为后续茶叶嫩梢采摘机的研发提供技术支撑。 相似文献
5.
研究CAN总线技术和汽车节气门，将CAN总线技术与汽车节气门相结合，设计出电子节气门，对汽车节气门的开度进行精确控制，进而优化汽车的空燃比，最终可提高汽车的动力性、经济性等汽车综合性能。 相似文献
6.
通过研究温差发电技术,将其与轻度混合动力汽车有机结合,对轻度混合动力汽车电源系统进行优化设计,为混合动力汽车提供能源。与传统混合动力汽车比较,达到了节能与环保。 相似文献
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为了保障汽车司乘人员的健康，满足汽车内环境达到舒适健康的要求，对汽车内环境污染物的产生及危害进行分析。同时从整体到局部，从汽车产业链上游到下游各环节提出改善车内环境的思路及措施，以提高汽车内环境的空气质量水平。 相似文献
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基于释放负离子红麻纤维汽车内饰材料研究 总被引：2，自引：0，他引：2
以红麻和低熔点聚酯为原料,添加负离子整理剂,制成了可释放负离子的汽车内饰材料.采用正交试验方法优化了负离子工艺参数,其负离子整理剂浓度为500g/L,浸渍时间为20 min,浸轧次数为2次.应用SPSS分析软件中的二次回归正交组合设计方案进行试验设计,分析各因素对负离子释放量的效应关系,对二次多项回归方程寻优得较优工艺参数为:热轧温度168.9℃,热轧时间5.3 min,热轧压强5.5 MPa.利用上述工艺制得红麻汽车内饰材料的负离子释放量为1480～1690个/cm3,达到GB/T18809-2002和GB/T 8170-1987的相关标准. 相似文献
11.
A versatile controller system has been developed that is essential for the automation of textile machinery such as a loom
or a braiding machine. Sensors and actuators needed for the automation of general textile machinery were determined and the
electronic circuitry for the communication between them and the controller were designed. A dedicated software has been developed
that can input and output numerous signals using a simple action-list type user interface. With this interface, any kind of
sequential processes can be controlled easily by modifying the list without changing the software or hardware of the controller
system. 相似文献
12.
以 1993～ 1994年的田间试验数据和同步的气候资料为基础 ,采用高斯方程 ,建立了以日平均气温为驱动变量 ,肥水满足条件下的马铃薯生育期的模拟模型。结果表明本模型不但具有较强的机理性和解释性 ,而且具有模拟精度高、预测性好等特点。本研究根据提出的模型用VisualBasic语言编程 ,使每日生态因子变化对马铃薯发育生理日的影响能够动态地表现出来 ,模拟结果具有很强的直观性 ,从根本上克服了同类研究中的缺陷 相似文献
13.
Collecting information at the interface between living cells and artificial substrates is exceedingly difficult. The extracellular matrix (ECM) mediates all cell-substrate interactions, and its ordered, fibrillar constituents are organized with nanometer precision. The proceedings at this interface are highly dynamic and delicate. In order to understand factors governing biocompatibility or its counterpart antifouling, it is necessary to probe this interface without disrupting labels or fixation and with sufficient temporal resolution. Here the authors combine nonlinear optical spectroscopy (sum-frequency-generation) and microscopy (second-harmonic-generation), fluorescence microscopy, and quartz crystal microgravimetry with dissipation monitoring in a strategy to elucidate molecular ordering processes in the ECM of living cells. Artificially (fibronectin and collagen I) and naturally ordered ECM fibrils (zebrafish, Danio rerio) were subjected to nonlinear optical analysis and were found to be clearly distinguishable from the background signals of diffusive proteins in the ECM. The initial steps of fibril deposition and ordering were observed in vitro as early as 1 h after cell seeding. The ability to follow the first steps of cell-substrate interactions in spite of the low amount of material present at this interface is expected to prove useful for the assessment of biomedical and environmental interfaces. 相似文献
14.
Mayssa Karray Asma Triki Christophe Poilâne Pascal Picart Mohamed Gargouri 《Fibers and Polymers》2016,17(1):88-96
In this work, a study of the dynamic dielectric analysis of the unidirectional epoxy composite: flax-fibre-reinforced epoxy (FFRE) was investigated. In this composite, three relaxation processes were identified. The first one is the water dipoles polarization imputed to the presence of polar water molecules in flax fiber. The second relaxation process associated with conductivity occurs as a result of the carriers charges diffusion. As for the third dielectric relaxation associated with the interfacial polarization effect is attributable to the accumulation of charges at the fibers/matrix interface. The analysis of the Maxwell-Wagner-Sillars (MWS) and the water dipoles polarizations using the Havriliak-Negami model revealed the high adhesion of flax fibers in the matrix. This analysis was supported by the thermal properties using a Differential Scanning Calorimety (DSC). 相似文献
15.
Leonard B. Coop Brian A. Croft Christopher F. Murphy Stanley F. Miller 《Crop Protection》1991,10(6):485-495
A decision support system for benefit/cost analysis of chemical treatment of the Senegalese grasshopper, Oedaleus senegalensis (Krauss) (OSE), was created to assist in the training, analysis, and management of grasshopper treatment programmes. The system, known as GHLSIM, has linked simulation models, databases, and a user interface. Millet and sorghum phenology and yields are estimated by an FAO (Food and Agriculture Organization, United Nations) soil water deficit model. Outputs from the PRIFAS (Programme de Recherches Interdisciplinaire Français sur les Acridiens du Sahel) OSE biomodel, including daily grasshopper life stages and favourability for development, are converted to density estimates using survey data, oviposition rates, and natural and insecticide-caused mortality. Crop loss is estimated through crop injury units — a function of grasshopper stage densities, consumption rates, crop preference, crop stage susceptibility, and non-crop vegetation greenness. Second-year benefits of treatment are estimated from end-of-season egg-pod densities. The model was calibrated using published economic thresholds for four crop stages. Yield increases from a late-season grasshopper aerial treatment campaign, 22 September — 19 October 1987, at 13 sites in eastern Chad were estimated at 33%±20% (s.e.). Benefit/cost ratios were 2.6±0.5 for the first season, and 3.8±0.7 with second-year effects added. The analysis indicated that optimal timing was 5–10 days earlier than the actual treatments. Crop yield reports from treated and non-treated areas, a crop loss assessment conducted in Batha, Chad in October 1987 and a break-even analysis provide further evidence that the campaign was successful and cost-effective at most sites, as indicated by model results. 相似文献
16.
Social and economic factors both affect and are impacted by pest problems and pest-control efforts. Thus, socioeconomic criteria must be met in order for a new pest-management technique to be judged a feasible alternative to current practices. This article reviews the objectives and methods for meeting and evaluating socioeconomic criteria for pest-management programmes. Economists, sociologists and other social scientists can provide valuable input to the justification, development, and evaluation of improved pest-management techniques by contributing in an interdisciplinary setting to all stages of a pest-management programme, from planning to implementation. A range of methodology, including surveys, monitoring, budgeting, simulation of economic conditions, mathematical programming, risk analysis, on-farm demonstration, and adoption research, are available for achieving this. Particular attention needs to be given to the perceptions, needs and objectives, and resources of the target pest-management user group. The socioeconomic factors important to pest management in developed regions of the world may differ from those requiring consideration in less-developed regions. 相似文献
17.
Tight-fitting clothing pattern reflecting the accurate information of the 3D body shape has been one of the challenges for
garment industry, however, fitting problems still exist. The objectives of the paper is to develop a 2D pattern which fits
tightly to the 3D human scan data for sports suits that need comfort and function for maximum performance. In this study,
the user graphic interface application software for the semi-automatic garment pattern generation has been implemented using
the triangle simplification scheme together with 2D projections of free-falling of 3D surface polygons keeping the original
3D surface area preservation. A typical application of the developed pattern to the functional body suits is presented and
verification of the proposed method is also provided. 相似文献
18.
Janejira Tospornsampan Ichiro Kita Masayuki Ishii Yoshinobu Kitamura 《Paddy and Water Environment》2005,3(1):29-38
A combination of genetic algorithm and discrete differential dynamic programming approach (called GA-DDDP) is proposed and developed to optimize the operation of the multiple reservoir system. The demonstration is carried out through application to the Mae Klong system in Thailand. The objective of optimization is to obtain the optimal operating policies by minimizing the total irrigation deficits during a critical drought year. The performance of the proposed algorithm is compared with the modified genetic algorithm. The results show that the proposed GA-DDDP provides optimal solutions, converging into the same fitness values within a short time. The GA is able to produce satisfactory results that are very close to those obtained from GA-DDDP but required alot more computation time to obtain the precise results. The difficulties in selecting optimal parameters of GA as well as finding a feasible initial trial trajectory of DDDP are significant problems and time-consuming. The significant advantage obtained from GA-DDDP is saving of computational resource as GA-DDDP requires no need for optimizing parameters and deriving feasible initial trial trajectories. Because DDDP is a part of GA-DDDP, the good performance of GA-DDDP is obtained when applied to a small system where numbers of discretizations and variables have no influence to the dimensionality problem of DDDP. 相似文献
19.
广西芒果病虫害发生情况和防治现状调查与分析 总被引：1，自引：0，他引：1
为准确了解当前广西芒果病虫害的防治现状及存在的问题,本研究通过网络平台、会议交流、实地调查等形式进行调研并统计分析,以期为芒果病虫害的绿色防控提供基础数据。广西芒果产区经营方式主要以家庭农场经营为主,占70.83%;种植品种主要包括‘台农’、‘桂7’、‘金煌’、‘热农1号’、‘贵妃’、‘桂10’和‘金兴’等,且71.58%的果园同时种有2个或2个以上品种。总体上芒果病害的发生为害程度较虫害严重,以芒果细菌性黑斑病和炭疽病最为严重。芒果病虫害使用最普遍的防治方法为施用化学药剂,且98.95%的种植户单次用药选择2种或2种以上混配使用,其中单次选用2~3种药剂混配的占55.32%。对于选择药剂的方式,不同种植年限的种植户不同,总体上,44.34%的种植户依靠自己经验或邻居介绍,36.79%依靠农药店推荐,18.87%按农技人员指导用药。药剂成本的投入在200~1000元/667 m 2不等,但是药剂投入与产量并没有成正比关系。 相似文献