浅谈分类学的数学方法

  In this paper, the various mathematical methods applied to taxonomy are intro- duced to readers.  Some approaches to the classification induced by statistics, graph theory, information theory, fuzzy mathematics are discussed. An example of classifica- tion (6 OTU’s with 8 characters) is given for convenience of discussion.  The original data matrix of this example is obtained from 6 species in the family of Campanulaceae.       

试论元极能源工程学

回顾人类利用能源历史,讨论创立无极能源工程学的必要性和现实性及其设想。     

试论物理学中的和

以物理现象及物理规律阐明“和”的内涵、生发、机理及应用,阐明“和”乃三元三极运化规律之核心,乃宇宙间万物之普遍规律。     

中国清风藤科的初步研究

 This paper is a preliminary study on the Sabiaceae in aspects of its morphology, taxonomy and geography.  We propose that the Sabioideae and Meliosmoideae as two new subfamilies of Sabiaceae according to the external morphology, flower structure and geographical distribution of these two genera respectively.       This paper follows the taxonomic concepts of Luetha Chen on Sabia and C. F. van Beusekom on Meliosma.  We agree with them for their classification of these two genera above the specific rank.  As to the revision work of Sabia by van de Water and C. F. van Beusekom’s work on Meliosma we disagree  for their unduly broad specific concepts.  We rather treat the species of these two genera according to their habitats in regions on a relatively narrower sense.  The genus Sabia of China are classified into 2 tribes, with 16 species, 5 subspecies and 2 varieties in which 4 sub- species and l variety are as new combinations, the genus of Meliosma in China are classified into 2 subgenera with 29 species, and 7 varieties of which 4 varieties are new combinations.       After examining the affinity of the species of Sabia and Meliosma in China and its neighboring nations such as Burma, Japan and Bhutan, we found that their migra- tion initiated from China, as the primitive species of these two genera occured in northeast and central part of Yunnan, sou theast of Sichuan, north of Guizhou and west of Hubei, the region may probably be the main origin of these two genera.      As shown in tables 1 & 2, the localities where the species of these two genera den- sely populate they are from Yunnan, Guangxi, and Guangdong coinciding with the concepts of C. F. van Beusekom and van de Water about the distribution of exotic species of these two genera, it may reasonable be pointed out that the center of distri- bution of these two genera is Yunnan, Guangxi, Guangdong and nieghboring nations, upper Burma and northern Vietnam.  Futhermore, it may be seen that starting from this center the number of species become less and less as they proceed far and far awaybut become more advance in evolution.     

初探糖厂的设备管理

随着科学技术的发展,企业对设备的依存度越来越高,设备管理对于企业的发展也越来越重要。文章从糖厂设备管理的特点、现状为基础,对糖厂设备管理提出建议。     

高等院校试题库建立及试卷自动生成系统的开发及意义

高校教务管理工作中一项非常重要的工作就是考试管理工作,工作任务繁重而且试卷的标准化程度、难易程度等各方面难以控制,难以形成有效的试题库,不利于历年来的优秀试题及试卷的利用.利用计算机进行试卷的自动生成并逐步积累形成有效的试题库,对试题和试卷的管理将变的高效而便捷,对提高工作效率,使试卷管理的标准化、自动化将起到十分重要的作用.     

中药学专业《药理学》期末考试试卷分析与评价

目的:了解中药专业学生对《药理学》课程的学习情况及教师在教学过程中是否达到预期的教学目标,为提高《药理学》教学质量提供可靠数据依据。方法:通过分析软件对广西中医药大学药学院2010级中药学专业162名学生的《药理学》期考试卷进行难度和区分度分析。结果:该份试卷共66题,其中客观题和主观题比例为3.125∶1,客观题和主观题的分值比例为1∶1,平均成绩为75.10分,标准差为10.84,最低分32分,最高分96分,极差为64分,难度系数为0.75,区分度为0.26。结论:本试卷难度适中,区分度尚可。     

A low cost design and fabrication method for developing a leak proof paper based microfluidic device with customized test zone

This article describes a fabrication process for the generation of a leak proof paper based microfluidic device and a new design strategy for convenient incorporation of externally prepared test zones. Briefly, a negative photolithographic method was used to prepare the device with a partial photoresist layer on the rear of the device to block the leakage of sample. Microscopy and Field Emission Scanning Electron Microscopy data validated the formation of the photoresist layer. The partial layer of photoresist on the device channel limits sample volume to 7 ± 0.2 μl as compared to devices without the partial photoresist layer which requires a larger sample volume of 10 ± 0.1 μl. The design prototype with a customized external test zone exploits the channel protrusions on the UV exposed photoresist treated paper to bridge the externally applied test zone to the sample and absorbent zones. The partially laminated device with an external test zone has a comparatively low wicking speed of 1.8 ± 0.9 mm/min compared to the completely laminated device with an inbuilt test zone (3.3 ± 1.2 mm/min) which extends the reaction time between the analyte and reagents. The efficacy of the prepared device was studied with colorimetric assays for the non-specific detection of protein by tetrabromophenol blue, acid/base with phenolphthalein indicator, and specific detection of proteins using the HRP-DAB chemistry. The prepared device has the potential for leak proof detection of analyte, requires low sample volume, involves reduced cost of production (∼$0.03, excluding reagent and lamination cost), and enables the integration of customized test zones.     

等同论文数(EPN):学术论文质量评估的新指标

现有的学术论文质量评估指标主要基于论文的引文数,关注论文产出的影响。本文从经济学价值理论出发,聚焦于学术论文创作过程,提出通过测量学术论文中包含的等同工作量,实现对学术论文质量的评估,从而提出一系列基于等同论文数的指标,例如X指标等。实例研究表明,基于等同论文数的系列指标具有较大的优越性。     

国家责任的内涵与评估初探

一、国家责任的内涵责任在道德领域内是指主体自觉履行自己的义务.如果说义务有外在强迫的性质,那么责任则完全来自于主体的感觉,来自主体对自身应尽义务的明确认识.     

论元极学的科学内涵

从科学发展趋势讨论了研究宇宙原始物质的可行性、问题及出路；论证了元极学的人天整体观是一个现代科学命题；依据现代物理学的发展，阐述了“无”的科学内涵和应用价值。