基于高光谱与在线序列极限学习机确证大米产地方法

为满足快速无损的大米产地确证需求，采集吉林省梅河口市水稻主产区及松原、大安、辉南等其他水稻产区共990个大米样本的高光谱图像（400~1 000 nm）作为研究对象，利用多元散射校正（MSC）处理方法对光谱进行预处理。采用多层感知机（MLP）、极限学习机(ELM)与在线序列极限学习机(OS-ELM)算法，分别基于全波段高光谱数据以及经多维尺度分析（MDS）方法降维后的数据建立产地确证模型。结果表明，基于全波段高光谱数据的OS-ELM模型分类性能最好，准确率达到98.3%。经MDS处理后，输入的数据变量减少了96.6%，MDS-OS-ELM模型准确率稳定在97.4%。对三种模型的训练时间进行对比分析，OS-ELM训练时间明显优于MLP，在分批次获取数据时训练时间优于ELM。为大米产地确证提供了一种高效、准确、稳定的方法。     

精品在线开放课程“食品化学”中的建设与研究

随着信息化教学的推进,精品在线开放课程的建设已成为优质教学资源推广、激发学生学习兴趣、提高学习成效的主要途径。以“食品化学”为例,阐述了该课程在线开放课程建设的思路,分别从教学内容的构建、课前、课中、课后3个环节有机结合闭环式教学、实践教学资源单元分解和考试方式的改革方面探讨了课程平台的建设与研究。     

厦门地区传统实体书店的图书网上销售研究

随着互连网的广泛应用以及电子商务的深入发展,卓越网、当当网等大型图书网站给传统实体书店带来了巨大的冲击。为了开拓市场,传统实体书店纷纷加入网上销售行列。那么,厦门地区传统书店网上销售又如何,主要采取哪种网上销售方式,存在什么样的优劣势,将就此展开讨论,并提出改进策略。     

基于Diurnal在线软件分析拟南芥生物节律基因对GABA的响应

Diurnal是一个基于网络的在线分析工具,利用该工具可以得到几种模式植物基因组范围内的昼夜和生物钟节律基因表达的变化规律。这一在线分析软件是一个可供搜索的数据库,它提供了几个基于网络的界面友好的数据挖掘工具,其结果以一种易于理解的方式呈现。在该研究中首先介绍了这个在线软件的使用方法,然后分析了几个拟南芥生物钟节律基因和开花基因在长日照条件下的表达模型,这些结果可以以图形和数字的方式下载用于后续的特定研究。结合在线数据,该研究表明,γ-氨基丁酸（GABA在1.0mmol/L）可以改变3个生物钟核心节律基因（TOC1,CCA1和LHY）的表达模式,这种模式的改变主要是增加了这些基因表达的幅度。     

如何做好农业古籍编目工作

文章对古籍编目的现状进行了分析 ,对农业古籍编目的特点作了阐述 ,指出了在农业古籍编目中存在的问题和不足 ,认为做好农业古籍编目还应该继续探讨一些问题以及古籍编目人员应具备多种学科知识。     

几种复杂期刊题名变化的款目记录处理

期刊在出版发行过程中会出现各种变化，特别是的题名的变化，令期刊的款日记录处理要比其他出版物复杂的多，本文就期刊的题名的变化在款日记录处理上提出了自己的做法。     

中国联机合作编目之回顾、现状与展望

随着信息时代的迅猛发展，图书馆想要生存．实现资源共享是唯一出路。而联机合作编目是资源共享的基础。文章论述了中国联机合作编目的发展历程，包括它的历史回顾、现状与展望。     

Satisfaction and satisfaction affecting problem behavior in different types of adopted dogs

Many dogs are relinquished worldwide, so it is important to enhance adoptions’ success. We aimed at investigating factors associated with owners’ satisfaction with adopted dogs, both in general and focusing on galgos. Data on 392 dogs (191 galgos) were gathered using an online survey, investigating dogs’ and owners’ demographics, satisfaction with the adopted dog and post-adoption behavior. Satisfaction was affected by different variables in galgos’ owners as compared to non-sighthound non-podenco dogs’ ones, with only the presence of disobedience on walks negatively affecting satisfaction in both samples. Depending on dogs’ type, the presence of some behavioral problems was associated with decreased satisfaction with the dog (e.g., destructiveness for galgos, or separation problems for non-sighthound non-podenco dogs), whereas that of others increased it (e.g., not being interested in social interactions with dogs for galgos, and shadowing for non-sighthound non-podenco dogs). The variables most often being predictors of the behaviors influencing satisfaction were dog type, with being a galgo as a negative predictor, and dog’s age, with being older as a negative predictor. Further studies on dog adopters’ satisfaction are needed.     

电商环境下食用菌“线上+线下”的营销体系构建

电商环境下,推动食用菌电商营销与渠道营销融合发展,构建"线上+线下"的营销体系,对全面提升食用菌产品的市场影响力,助力产业转型升级有重要意义。通过以电商环境为基础,分析食用菌"线上+线下"营销体系的构建价值与主要特征,提出技术支持、消费者主导和渠道整合等具体建议,以进一步推动食用菌产品营销发展。     

Teaching small animal reproduction via virtual patients

Virtual patients have become an interesting alternative in medical education. Due to increasing demands regarding theoretical and clinical teaching and to improve an interdisciplinary approach, a new blended learning concept including virtual patients was developed and implemented in the veterinary curriculum of the Freie Universität Berlin. In the presented project, three virtual patients from the field of canine reproduction were developed. They focus on pregnancy diagnosis with suspected luteal insufficiency, pyometra and benign prostatic hyperplasia, respectively. The results of an evaluation by veterinary students of the 7th semester showed a high acceptance of virtual patients in a blended learning reproduction module in the interdisciplinary lectures. Students especially preferred videos, such as video lectures, hands-on videos and animations as well as a glossary for background information, to successfully and autonomously work on a virtual case. The content covered by the new modules that were developed in the context of this project is part of a spiral curriculum; they will be revised and enhanced during the clinical year.