板材纹理计算机视频检测技术及应用

介绍了板材纹理计算机视频检测技术的发展、视频检测的特点及主要方法、识别理论和相关技术的发展,提出了板材纹理计算机视频检测技术的应用前景。     

科举制对文化教育的激励作用及其启示

科举制对文化教育的作用是双重性的，既有阻碍其发展的一面，也有推动其发展的一面，表现在科举制以才学取士，使读书、考试、做官紧密联系，从而推动了中国社会对文化教育的重视，刺激了文化教育的发展。科举制对文化教育的激励作用对于当前考试制度与文化教育的关系具有重要的借鉴作用。     

理学家与南宋书院的兴起

南宋理学家掀起的书院运动,使理学与书院同时兴盛,出现一体化的深度融合。理学家有两大目标,一是谋求官方和民间两种力量共同推进书院的建设,二是建立官方书院,使之成为与州县官学并存而又能修正其沉迷科举的弊端的另一种官方教育模式。书院不以科举为目的,而以讲学为指归,是理学家追求的理想。     

基于B／S模式的考试系统设计与实现

在线考试系统是吉林省农业类高校公共课改革项目中考试改革的重要组成部分,论文研究了C/S模式、B/S模式的体系结构,给出了在线考试系统的总体设计和功能结构图。     

《机械制造基础》课程试题库系统开发

主要探讨了基于可视化软件开发工具Delphi 7编程开发的《机械制造基础》试题库系统的开发和实施．并介绍了其中主要功能模块的实现和功能。     

Is routine pre-anaesthetic haematological and biochemical screening justified in dogs?

OBJECTIVES: To determine if routine haematological and biochemical screening is of benefit in dogs requiring anaesthesia and to establish the most useful tests for pre-anaesthetic risk assessment. ANIMALS: One thousand five hundred and thirty-seven client-owned dogs undergoing surgery at the University of Leipzig between January 2003 and April 2004. MATERIALS AND METHODS: After obtaining a standardized history and a physical examination, all dogs requiring anaesthesia were assigned to an ASA physical status group, their needs for pre-anaesthetic therapy determined and an anaesthetic protocol proposed. Haematological (haematocrit, red blood cell count, white blood cell count, platelet count and haemoglobin concentration) and serum biochemistry tests (plasma urea, creatinine, glucose, total protein, sodium and potassium concentration; serum alanine aminotransferase, alkaline phosphatase and lipase activity) were then performed in all animals. The results of these were then used to: 1) re-define each dog's ASA physical status; 2) determine any altered requirement for pre-anaesthetic therapy; 3) re-determine the suitability of the dog to undergo surgery; and 4) re-examine the suitability of the original proposed anaesthetic protocol. RESULTS: The history and clinical examination in 1293 out of 1537 dogs (84.1%) revealed that haematological and biochemical tests would have been considered unnecessary under normal conditions. Of these, 63.9% were categorized as ASA 1, 28.5% as ASA 2, and 7.6% at higher risk. In some dogs, screening tests showed abnormal results: 16.7% of 1293 dogs had abnormal plasma urea levels, with 5.9% of values above the reference range. However, only 104 dogs (8%) would have been re-categorized at a higher physical status category had the laboratory results been available. Additional screening data indicated that surgery would have been postponed in 10 dogs (0.8%) additional pre-anaesthetic therapy would have been provided in 19 animals (1.5%) and the anaesthetic protocol altered in two dogs (0.2%). CONCLUSION: The changes revealed by pre-operative screening were usually of little clinical relevance and did not prompt major changes to the anaesthetic technique. CLINICAL RELEVANCE: In dogs, pre-anaesthetic laboratory examination is unlikely to yield additional important information if no potential problems are identified in the history and on physical examination.     

基于机器视觉的玉米果穗产量组分性状测量方法

玉米果穗的穗长、穗粗、穗行数、行粒数等性状是制约玉米产量的重要组分性状,目前主要采用人工测量方式,或通过截取果穗横断面图像自动计算穗行数等参数,操作复杂、测量效率低、主观误差大,且无法保留完整的原始考种材料。针对上述问题,该文基于机器视觉技术,通过可见光二维成像获取果穗三维表型性状参数,结合果穗颜色特征及果穗的生物学规律,分别建立投影修正模型、穗行数快速估算模型、行粒数计算模型等,精确计算穗长、穗粗、穗行数以及行粒数等性状参数。试验结果表明,该方法适用于粘连果穗处理,秃尖的识别率高,且对光照环境要求低,穗行数及行粒数的零误差率在93%以上,测量速度可达30穗/min以上,能够满足高通量考种的需求,特别是保留了原始果穗考种材料实现无损测量,对于实现高通量考种及精细化育种有重要的参考价值。     

家蚕病原微生物检测诊断研究进展

简述了家蚕病原微生物主要种类,并从传统镜检、免疫学和分子生物学三个方面,介绍了已用于家蚕病原微生物检测诊断的生物技术,探讨了可用于这一领域的新技术新思路。     

大学生考试作弊现象呈现的新特点与对策思考

大学生考试作弊现象由来已久,近年来呈现出一些新的特点并有愈演愈烈之趋势,总结了考试作弊现象的新特点,论述了考试作弊的5大弊端,并给出了预防和控制大学生考试作弊行为的一些对策。     

基于J2EE的在线考试系统设计与实现

以国税局在线考试系统为例,论述了系统的设计及其实现,研究了J2EE、Struts2、iBATIS和Oracle等主流技术在实际开发中的应用。实际应用证明,系统可靠性高、安全性好、可扩展性和可维护性强,能有效解决考试公平和效率问题。