工农村农户种植果木业收入调查报告

农业内部经济结构调整和农民收入结构多样化,对社会主义新农村建设有着非常大的意义。在当前,尤其应遵循生态经济的发展规律,因地致宜地调整农业经济结构。通过对地处成都市市郊、拥有平原向丘陵地区的过渡地带的工农村进行个案调查,运用规范性研究方法,能深化和丰富对理论的认识。     

CallCenter系统用户识别模块设计与实现

介绍了CallCenter系统用户识别模块的识别原理、号码提取和地区识别原理及实现，实现了来电用户识别、分类和资料归档功能，为CallCenter系统的座席资源分配提供了参考依据，提高了CallCenter系统的客户响应效率。     

基于机器视觉技术的番茄苗分类和排序技术研究

传统番茄苗选择中,往往是操作员根据形态学特征,基于视觉评分标准来识别幼苗,这是一种主观的、容易发生人为错误的方法。针对这一问题,文章基于机器视觉技术设计了一种全自动移栽番茄苗分级分选算法,选择UXGA(Ultra eXtended Graphics Array)极速扩展图像阵列相机、蓝色背光和滤光装置获取番茄幼苗图像信息,从图像信息中确定幼苗的弯曲度、叶片节点和茎粗,然后对其进行分级和排序,进而将这些幼苗分级为“可接受”和“剔除”。结果表明,根据番茄苗茎的粗细,将幼苗分级,分为大、中、小三类,具有良好的效果。该算法不仅适用于番茄幼苗,还可以应用于茄子、辣椒和许多其他幼苗,分选成功率为97%。     

滦平县果树种质资源及其开发试验研究

本文从滦平县生态条件和果树种质资源的考察出发，分析了果树发展条件、重点进行了果树品种改良的试验与示范推广工作，并就滦平县果树的进一步发展提出了具体对策     

可用性测试方法在IA研究中的应用

企业进行信息构建时必须研究用户，而可用性测试作为信息构建的重要组成部分，是一种研究用户的有效手段，通过规范的可用性测试过程，可了解用户行为并指导网站设计。作为可用性测试方法的一种，卡片分拣法可以探索用户对于网站信息如何分类，以此提高用户搜索成功率。     

归并排序的一种改进算法

给出了归并排序算法的一种改进算法,对具有“离散”性的多个数据排序时利用该算法具有较明显的优势。     

Learning sorting algorithms through visualization construction

Recent increased interest in computational thinking poses an important question to researchers: What are the best ways to teach fundamental computing concepts to students? Visualization is suggested as one way of supporting student learning. This mixed-method study aimed to (i) examine the effect of instruction in which students constructed visualizations on students’ programming achievement and students’ attitudes toward computer programming, and (ii) explore how this kind of instruction supports students’ learning according to their self-reported experiences in the course. The study was conducted with 58 pre-service teachers who were enrolled in their second programming class. They expect to teach information technology and computing-related courses at the primary and secondary levels. An embedded experimental model was utilized as a research design. Students in the experimental group were given instruction that required students to construct visualizations related to sorting, whereas students in the control group viewed pre-made visualizations. After the instructional intervention, eight students from each group were selected for semi-structured interviews. The results showed that the intervention based on visualization construction resulted in significantly better acquisition of sorting concepts. However, there was no significant difference between the groups with respect to students’ attitudes toward computer programming. Qualitative data analysis indicated that students in the experimental group constructed necessary abstractions through their engagement in visualization construction activities. The authors of this study argue that the students’ active engagement in the visualization construction activities explains only one side of students’ success. The other side can be explained through the instructional approach, constructionism in this case, used to design instruction. The conclusions and implications of this study can be used by researchers and instructors dealing with computational thinking.     

怀化地区小水果资源调查初报

本文首次报道了怀化地区小水果及野生果树资源的种类、分布和蕴藏量。该地区现有小水果272种及品种,野生果树83种及变种,它们分别隶属于18科,33属。本文为合理开发利用该地区的果树资源,提供了依据和建议。     

我国实施城市生活垃圾分类处理的对策分析

城市生活垃圾分类回收一直是我国垃圾处理工作一大难题．该文从我国城市垃圾分类混乱化、无序化等现状入手，分析了我国城市生态环境恶化，垃圾分类回收进程缓慢的原因，提出垃圾处理工作应与我国经济发展相协调，并提出实行城市生活垃圾分类回收的相应对策．     

鲁迅书信中的文论问题

1981年版《鲁迅全集》收鲁迅所作书信1333件,其中大部谈到文艺问题,内容涉及文艺理论、文艺创作、文艺鉴赏等诸多方面。鲁迅的精辟见解,无论在当时还是今天,都具有重要指导意义。