农业专利地图工具的研究与实现

本文主要介绍了农业专利地图工具的研究意义、用途和实现方法,实现过程包括专利数据库的建立、专利数据输入模块和统计分析模块。     

谈FLASH教学中创新能力的培养

当前，中国经济面对着国际竞争的各种考验，在越来越高的“中国创造”呼声中，不由的想起了江总书记关于教育方向的精辟论述，“创新是一个民族的灵魂，是国家兴旺发达的不竭动力”。在创新教学的今天，大力培养学生的创新能力已成为教育工作者的重要任务。     

奥维互动地图系统在森林资源管护中的应用

通过对奥维互动地图特色功能的介绍,结合森林资源管护日常工作的重点,具体分析奥维互动地图在森林管护工作中的实际应用,并针对通过奥维互动地图更好地开展森林管护工作进行简要分析.     

ArcGIS制图表达在地图制图方面的应用

随着科学技术的不断发展和创新,计算机地图制图已基本替代传统的地图绘制,实现了地图制图技术的历史性变革。ArcGIS10是ESRI公司出品的一系列GIS软件,它的自动化地图制图技术已相当完善,可以实现各种地图制图的需求。通过实例讲述了ArcGIS制图表达在地图制图方面的应用,解决传统GIS制图符号化中复杂地物表现上的难题,实现符号系统的共享,属性变化的动态表达,制图表达的规范化与个性化,以及图库数据的一体化生产和管理,最终提高GIS制图的效率。     

CAD文件导入奥维地图的三种方法及其对比

将奥维地图软件应用到水土保持野外作业中,可显著提高现场踏勘效率。本文详细介绍了将CAD文件导入奥维地图的三种方法,通过综合分析各方法的特点并进行对比分析,结果表明:关联点法更具有普适性及推广意义。     

用Flash动作脚本实现下雪特效的制作

介绍了F1ash中Function、DuplicateMovieClip、SetProperty、Set Variable、If、SetInterva动作脚本的使用，来实现下雪特效的制作。     

基于GIS的泰州市自动气象站应用系统的设计和实现

根据泰州市气象业务发展需求,以GeoServer发布地图数据为基础,结合SQL Server数据库,以Java为开发工具设计并实现了基于GIS的自动气象站查询系统。在对自动气象站数据报文自动采集入库,形成统一格式的数据库基础上,实现了多条件的气象要素查询、统计,异常数据值的监测和预警、疑误数据反馈等功能,同时提供了等值线、色斑图、曲线图等形式多样的服务产品表达方式。该系统已经投入运行,并通过一体化业务平台服务于社会和行业用户。     

Access2010中利用宏实现自定义菜单

Access2010提供了简单、实用的操作环境、可视化操作工具、大量的内置函数和宏以及VBA程序设计语言等功能,使用它能够开发出满足用户需求的数据库应用程序,其界面美观,易于操作,是广泛使用的数据库系统之一。开发应用程序时离不开窗体菜单,但Access2010并没有提供菜单设计工具,本文提出一种利用宏实现自定义窗体菜单的方法,为开发Access应用程序的设计人员提供技术性参考。     

水体溶解氧监测系统中无线通信网络的实现

为了对淡水水体中的溶解氧进行监测,设计了实时在线溶解氧监测系统,采用无线传输模块实现了对大面积水域进行多点、实时和在线监测,重点设计了上、下位机通过无线传输模块进行数据传输的通讯协议。     

农机诊断中故障树最小割集的微机实现

利用数据库技术,将农机诊断中故障树状结构变为数据库结构。方法上全部采用数据处理,避开非线性运算,由微机直接求取故障树最小割集。算法思路清晰,程序实现简洁,易于操作和掌握,并能节省计算机内存,大大提高计算速度。     

探讨案例教学法在Flash动画制作课程中的应用

中高职院校以就业为导向,开设了《Flash动画制作》课程。该课程与就业联系比较紧密,实践性很强。研究提出了传统的教学方法已经不能够适应该课程的教学,提出有必要在Flash教学中引入案例教学。     

No place to nest or bask: Effects of human disturbance on the nesting and basking habits of yellow-blotched map turtles (Graptemys flavimaculata)

Considerable recent attention has focused on how human disturbance alters the behaviour of imperiled taxa. Data on such impacts are common for waterfowl, marine mammals, and some large game animals. However, little is known about how human disturbances affect reptiles, perhaps because most reptiles are secretive and are not commonly seen by the public. We studied the impact of human disturbances on the nesting and basking behaviour of the yellow-blotched map turtle (Graptemys flavimaculata) on the Pascagoula River in southeastern Mississippi, USA. We found that both nesting and basking behaviour of map turtles were altered by human recreational activities. Turtles attempting to nest commonly abandoned their attempts upon the approach of a boat and, prior to nesting, numerous individuals waited several hours near the beach without emerging. Basking turtles frequently dove into the water upon the approach of a boat and some did not return to bask. Anglers in small boats that remained in the vicinity of basking sites caused the most disturbances, whereas personal water crafts (jet skis) caused fewer disturbances. Our data suggest that interruption of nesting activities may have an especially severe impact on the viability of this population through changes in numbers of clutches females are able to lay and altering the microhabitat females select for their nests.     

Modeling carbon dynamics in subsoils using simple models

Soil C dynamics below the plow layer have been little studied, despite a suspected large C‐stabilization potential of subsurface horizons. The objective of this study was to test two simple models (model A: single compartment for C₃‐ and for C₄‐derived C; model B: division of C₃‐ and C₄‐derived C into active and passive compartments) in their ability to simulate the C dynamics in subsoil horizons of a Haplic Phaeozem after conversion from C₃ (rye) to C₄ cropping (maize). The models were calibrated on an unfertilized maize soil and then validated on a maize soil with NPK fertilization. Both models simulated well C₃‐C and C₄‐C dynamics in the investigated soil depths (20–40 cm and 40–60 cm). In all cases, the model efficiency EF was > 0, which indicated that the simulated values described the trend in the measured data better than the mean of the observations. However, we observed some inconsistency in the obtained parameter set (e.g., a higher proportion of passive C for C₄‐derived than for C₃‐derived C or a very low decomposition rate constant for passive C₄‐C in 40–60 cm), which we assume to result from data restrictions on the investigated soils. More detailed data on SOC pools and turnover rates in subsoils which are generally not yet available for most experimental plots is vitally needed—especially for applying more sophisticated C‐dynamics models.     

新疆雪密度分布研究

新疆9个代表站点实测资料显示，新疆雪密度变化有明显稳定期和不稳定期之分，稳定期雪密度随时间呈斜率为0．0059的直线变化；进一步通过对新疆29个有雪密度观测资料的气象站40a（1964—2003年）气象资料进行聚类和回归分析，结果表明降水、雪深、大风、吹雪日数等因子与稳定期雪密度有显著或极显著正相关关系，从而建立了雪密度估算的气候模型。利用雪密度气候模型，以79个站雪密度为基础，采用mapgis65，结合地形、高程和卫星遥感数据，完成了新疆稳定期雪密度的空间分布图，该图是可用于计算的电子图集，可随时提取新疆及其任意区域的雪密度。     

基于C语言的农业科技数据信息快速保存技术及实现

运用C语言的读写技术,可将磁盘文件中的数据读入到计算机内存,处理完后的数据或中间结果依然可以输出到磁盘文件中永久保存。阐述了利用C语言实现数据长期保存的一般流程和方法。     

红树林恢复过程中土壤有机碳的变化

Based on total carbon (C) and C isotopes in sediment cores, sedimentary organic carbon (SOC) was quantified in three types of mangrove sites (barren flat sites without mangroves, mangrove plantations, and natural mangrove forests), which were considered to represent a continuum from least restored to most restored sites in southern China. SOC densities in the barren sites, plantations, and natural forests were 90, 170 and 288 Mg ha-1, respectively. We inferred that mangrove restoration increased SOC accumulation in coastal areas. At 0--70 cm depth, SOC ?13C values in both mangrove sites ranged from -27.37‰ to -23.07‰, and exhibited gradual enrichment with depth. In contrast, the values in the barren flat sites remained around -22.19‰ and fluctuated slightly with depth. At 0--60 cm, the 14C ages of the SOC in the barren flat site, the natural mangrove site, and the artificial mangrove site ranged from 1 397 to 2 608, 255 to 2 453, and 391 to 2 512 years BP, respectively. In both types of mangrove sites but not in the barren flat sites, the enrichment of ?13C with depth was related to increases in SOC decay and SOC age with depth. According to analysis of 14C age, much of the mangrove-derived C was transported and stored at 0--60 cm depth under anaerobic conditions in both mangrove sites. The sediments of mangrove forests in southern China sequester large quantities of SOC during mangrove restoration.     

农业地理信息系统中对栅格图象无用数据的空间分析技巧

阐述了栅格图象处理过程中,对斑点噪声和无用数据的处理技巧,并且按照实施步骤列出了相应的地图代数函数。     

利用地统计学研究土壤有机质空间分布：评估意大利中部地区土地退化的重要指标

Soil organic matter (SOM) content is one of the main factors to be considered in the evaluation of soil health and fertility. As timing, human and monetary resources often limit the amount of available data, geostatistical techniques provide a valid scientific approach to cope with spatial variability, to interpolate existing data and to predict values at unsampled locations for accurate SOM status survey. Using geostatistical and geographic information system (GIS) approaches, the spatial variability of some physical and chemical soil parameters was investigated under Mediterranean climatic condition in the Abruzzo region of central Italy, where soil erosion processes accelerated by human induced factors are the main causes of soil degradation associated with low SOM content. Experimental semivariograms were established to determine the spatial dependence of the soil variables under investigation. The results of 250 soil sampling point data were interpolated by means of ordinary kriging coupled with a GIS to produce contour maps distribution of soil texture, SOM content related to texture, and C/N ratio. The resulting spatial interpolation of the dataset highlighted a low content of SOM in relation with soil texture in most of the surveyed area (87%) and an optimal C/N ratio for only half of the investigated surface area. Spatial location of degraded area and the assessment of its magnitude can provide decision makers with an accurate support to design appropriate soil conservation strategies and then facilitate a regional planning of agri-environmental measures in the framework of the European Common Agricultural Policy.