面向养殖水体分布差异的COD光谱法检测研究

面向养殖水体，传统光谱法对化学需氧量（Chemical Oxygen Demand，COD）检测模型构建的基础：源域（现有样本库）与目标域（检测地水体）间光谱数据独立同分布。但是当源域与目标域分布间存在差异时，由源域得到的低误差模型常在目标域上表现下滑。针对该问题，提出面向UV Vis光谱的域对抗训练网络（DAUVwpNet），将分布不同的源域和目标域数据映射至相同分布的特征空间中，使其在该空间的分布距离尽可能接近，从而在特征空间中对源域训练的目标函数也可以迁移至目标域上，以降低模型在目标域的误差。试验表明：面向同一批测试数据，DAUVwpNet的预测误差为0.78，要低于传统模型的预测误差（0.85）；DAUVwpNet预测值与实测值间相关系数为0.95，要高于传统模型的相关系数（0.89）。表明了该网络能够较好对齐两域特征空间数据分布，降低因分布差异带来的COD检测误差。     

家畜环境卫生学课程线上教学模式的研究

随着互联网信息技术发展和智能手机的普及,顺应时代发展的需要,线上教学成为未来高校教学活动开展一种必然途径。本文基于学习通和QQ群课堂平台构建了家畜环境卫生学课程的教学设计方案,并详细介绍了教学活动的实施办法,分析了线上教学面临的困难,并提出了相应对策,以期为高等学校线上教学改革提供参考。     

冲裁模CAD中的自动排样

本文对冲裁件的计算机自动（优化）排样问题进行了全面、深入的讨论，给出了其实现的主要算法及数学模型，这一方法已在冲裁模ＣＡＤ系统中应用．     

高等农业院校科技译刊选题刍议

选题是办刊的一个重要环节,高等农业院校科技译刊选题,要根据农业学科本身的特点,根据教学科研的实际需要,又能反映学科发展的新趋势、新动态,同时,选题还要考虑本校翻译队伍的优势,特点。     

小麦深施肥播种机应用与效果初探

通过新型的小麦深施肥播种机的应用，实现了小麦深施肥播种，使种、肥分箱不同床，解决了过去化肥对种芽、幼苗的危害问题。达到了节本增效、增产增收的目的。     

振动深松鼠道犁的试验分析

石河子及周围垦区的土壤粘重且呈盐碱性,由于犁底层的存在,土质很难得到改善。而深松作业则是打破犁底层的主要农业技术措施之一。为此,论述了IZSS-600-3型振动深松鼠道犁的构造和工作原理,分析了试验因素对试验指标的影响,为机具今后在农业生产中的应用和推广提供了依据和参考。     

基于图形旋转系统的渐进网格研究

拓扑简化可以为渐进网格带来更好的效果，但目前几乎所有的渐进网格方法都不支持拓扑简化，而且edge collapse和vertex split操作有时会产生非流形．针对这些问题，提出了基于图形旋转系统的渐进网格法．以基于图形旋转系统的数据结构和操作实现了渐进网格，用图形旋转系统的操作集合构建了edge collapse和vertex split操作．在此基础上，通过扩展新操作即可进行任意拓扑变化，从而实现拓扑简化，     

深基坑锻锤基础冬期施工

在冬期施工，对于土方开挖、钢筋绑扎、人员的通行、砼的浇铸、砼的温度控制，基坑的保温等都带来一定困难，为此提出了深基坑锻锤基础才是最佳实践应用。     

社会工作视野下高校和谐教育的构建

基于对我国当前高校不和谐现状的分析,秉持社会工作的理念和视角,探索了我国高校和谐教育的含义,并就社会工作作为一种专业方法在建设高校和谐教育中的策略进行了探讨与创新.     

Yield Performance of Wheat Isolines with Different Dosages of the Short Arm of Rye Chromosome 1

Translocations of the short arm of rye (Secale cereale L.) chromosome 1 (1RS) in wheat (Triticum aestivum L. cv. Pavon 76) are known to increase root biomass. Such an increase enhances water and nutrient uptake and may improve grain yield. Two greenhouse experiments and a field experiment were carried out at the University of California, Riverside, in 2012 and 2013 under well‐watered and terminal drought treatments to evaluate phenotypic characters associated with varying dosages of 1RS, including grain yield. The genotypes used were cultivar Pavon 76 (R₀), Pavon 76/Pavon1RS.1AL (F₁ hybrid) with a single dosage of 1RS (R₁A), Pavon 1RS.1AL with two dosages of 1RS (R₂A), Pavon 1RS.1DL (R₂D) also with two dosages of 1RS and Pavon 1RS.1AL‐1RS.1DL (R₄AD) with four dosages of 1RS. There was a significant positive correlation between number of dosages of 1RS and root biomass. However, no correlation was found between root biomass and grain yield per plant. Drought in the field experiment reduced grain yield significantly. Under well‐watered field conditions, grain yield of R₂A (215.9 g plant^?1) was significantly greater than those of R₂D (191.8 g plant^?1) and R₄AD (161.7 g plant^?1). Also, grain yield of R₄AD was significantly less than those of F₁, Pavon 76 and R₂D under well‐watered conditions. Under drought field conditions, no significant differences were found among the genotypes for grain yield was found between F₁ (14.7 g plant^?1) and R₄AD (12.4 g plant^?1). Harvest index was significantly greater in well‐watered (44.2 %) than in drought (34.6 %) field conditions. On average, genotypes F₁ (42.3 %) and R₂A (40.6 %) had higher harvest index than R₂D (38.3 %) and R₄AD (35.5 %) in the field. Also, Pavon 76 (40.2) and R₂D (38.3) had higher harvest index than R₄AD. Drought tolerance was lowest for R₄AD due to its relatively lower grain yield potential. In general, Pavon 1RS.1AL carrying two dosages of 1RS showed higher grain yield under wet treatments. Pavon 1RS.1AL‐1RS.1DL carrying four dosages of 1RS produced the largest shoot and root biomasses, but the least grain yield.