A MATHEMATICAL MODEL OF FUZZY EVALUATION METHOD FOR ENVIRONMENTAL POLLUTION

The problem of fuzzy evaluation of environmental pollution is importantboth in environment science and in environmental protection.Usual evaluationmethods have their own characteristics.This paper puts forward a mathematicalmodel of fuzzy evaluation method in grades by means of systematic analysisfor environmental pollution.At the same time,it assigns weighted values byordering based on paired comparison.     

英汉礼貌与文化价值差异

着重阐述两种文化中礼貌原则和“面子论”的相关研究,并以此为基础,对这些研究进行分析,探究其差异,然后从文化价值的角度分析特定文化价值观差异对礼貌的制约和影响。     

高校国有资产保值增值存在的问题及对策

概述高校国有资产的表现形式,分析高校国有资产管理的现状及存在问题,提出高校国有资产保值增值的对策。     

优秀传统家训文化涵育大学生社会主义核心价值观探讨

家训文化是中华民族优秀的传统文化,其与社会、个人以及社会主义核心价值观的主流意识形态有着紧密的关联。高校在培育社会主义核心价值观的工作中,要做到细致、落实、落小,离不开优秀传统家训文化的熏陶。讨论了优秀传统家训契合社会主义核心价值观的价值诉求以及优秀传统家训文化在当前时代的价值,提出了优秀传统家训文化在高校培育社会主义核心价值观中的具体路径。     

大鳍鱯的消化能力与营养价值

采用常规方法测定了大鳍鳠(Mystusmacropterus)的消化道指数,其比肠长、比胃重、比肠重、比肝胰脏重和比内脏重分别为0.531±0.006、0.014±0.006、0.017±0.003、0.0084±0.0029和0.070±0.011。体重与体长的回归方程Y=0.1238X2.8388(r=0.9949,P<0.01);大鳍鳠的胃、前肠、中肠和后肠中消化液的pH值分别为:3.0～3.8、6.6～7.4、7.2～8.2、7.2～7.9,且消化道各部分具有较高的蛋白酶和淀粉酶活性,蛋白酶的活性为中肠>前肠>肝胰脏>后肠>胃;而淀粉酶的活性则为前肠>后肠>中肠>肝胰脏>胃;全鱼和肌肉中粗蛋白的含量分别为62.09±3.8%和68.28±4.6,粗脂肪含量分别为15.33±1.7和21.87±2.9;肌肉中必需氨基酸的含量占氨基酸总量的40.76%,鲜味氨基酸的含量为总氨基酸量的29.70%。综合肌肉的常规营养成分和氨基酸分析的结果,表明大鳍鳠是一种营养价值较高的优质鱼类。     

城市静态小水体生态修复措施与生态服务价值评估研究

城市静态小水体污染是城市环境污染的重要问题之一。针对城市静态小水体的特点,依据稳态转换理论和生物操纵理论,形成适应于城市静态小水体的生态修复措施,并运用于武汉市青山区倒口湖水生态修复工程。工程实施后湖水水质得到明显改善,其中,水体透明度由0.2~0.4m提高至1.0~1.5m,溶解氧浓度由1.82~2.35mg/L上升至5.21~6.28mg/L,CODMn浓度由14.96~16.3mg/L降低至3.56~5.01mg/L,TN浓度由2.61~2.99mg/L降至1.27~1.6mg/L,TP浓度由0.43~0.62mg/L降至0.06~0.12mg/L。进一步对倒口湖水生态系统的供给、调节、文化以及支持4方面的服务价值进行评估,通过对水生态系统服务价值评价指标计算得出,工程实施前后水生态系统服务价值分别为299.34万元和645.62万元,新增服务价值346.28万元。在增量价值中固碳释氧、净化水质指标占比最大,表明在水生系统动植物的协同作用下,倒口湖的水质条件得到明显改善。     

提高猪肉风味的饲料对育肥猪血液生化指标的影响

选择临床健康、70日龄的杜长大三元杂交仔猪60头,随机分成试验组和对照组,每组30头。对照组只喂给基础日粮,试验组饲喂提高猪肉风味的饲料,两组均在同一条件下,按常规方法饲养管理,饲喂90d结束试验。试验结束后,空腹耳静脉采血,离心分离血清,测定血清中14项生化指标。试验结果表明,提高猪肉风味的饲料对肥育猪血液各项生化指标无明显影响。     

Comparing theoretical irrigation requirement and actual irrigation for citrus in Florida

Florida ranks first in citrus production, with nearly 68% of all U.S. citrus growing in the season 2005-2006. Most of the citrus groves are located from central to south Florida, and agricultural irrigation permitting is regulated by three of Florida's five water management districts. Most of the permitting for citrus production in Highlands, Polk and Hillsborough counties is conducted by the Southwest Florida Water Management District (SWFWMD), and quantities are based on the District's AGMOD computer program. In 2003, the SWFWMD implemented new permit criteria so that permitted amounts were more representative of actual water use. This paper compares grower reported citrus irrigation water use in Highlands, Polk and Hillsborough counties from 1994 through 2005 with permitted and theoretical irrigation requirements calculated by a daily water balance. Two different sets of crop coefficients (K_c's) developed for citrus in Florida were compared in the daily soil water balance calculation of theoretical irrigation requirements. The percentage of irrigated area considered in this study ranged from 40 to 60% to simulate a range of grower practices. Meteorological data from two weather stations and additional rainfall information from 50 locations within the three counties was used in the water balance. Missing and error values in the meteorological historical record data were filled with weather generators. The multiannual average water consumption (including cold protection water use) from growers ranged from 243 (Hillsborough) to 406 mm (Highlands) and the multiannual average permitted irrigation requirement (without cold protection) ranged from 295 to 557 mm. The simulated gross irrigation requirements under different scenarios of location-K_c-wetted area were variable but mostly lower than the limits established by the district, except for some scenarios in Polk County, whose maximum simulated irrigation value reached 578 mm year⁻¹. In general, permitted limits recommended by the SWFWMD seem to be reasonable for the actual water use by growers in these counties.     

基于机器视觉的玉米果穗参数的图像测量方法

在玉米育种和品质研究中,经常需要对玉米的果穗长度、果穗宽度、穗行数、穗粒数等参数进行测量。该研究提出了一种基于机器视觉的玉米果穗参数图像测量方法。使用PC摄像头连续采集旋转台上的玉米果穗图像,经过图像处理,获得玉米穗的图像区域,进而得到玉米果穗的穗长和穗宽参数;通过对玉米果穗局部区域的x方向和y方向累计像素值曲线进行分析,提取出玉米穗行,获得每一穗行的穗粒数和穗行宽度;通过图像匹配,获得玉米果穗的穗行数。试验表明,使用该研究方法对玉米果穗的长度、宽度和穗行数的参数测量准确率可达98%以上,对穗行宽及总穗粒数测量准确率达95%以上,整穗的平均检测时间约102 s/穗。该研究实现了玉米果穗参数快速有效的自动检测,相对于目前采用的人工检测,大大提供检测效率,降低劳动强度,可应用于玉米千粒质量检测、产量预测、育种和品质分析等场合。     

随机取样技术中的数据处理

取样技术是一种广泛应用的信息处理技术。通过对模拟信号的取样量化处理，可以得到便于计算机处理的数字信号。若使被取样信号不失真，取样频率必须高于被取样信号最高频率分量2倍，这对于高频信号不容易做到。为此提出了随机取样技术，即用低频脉冲序列对高频信号随机取样，通过大量样值来统计出原信号的某些特征。