高职教育“2＋1”人才培养模式的探索与研究

积极开展人才培养模式改革是高职院校现阶段在职业教育迅猛发展的大好形势下的一项重要任务。本文就“2＋1”人才培养模式推行的可行性与必要性、具体在实施过程中的一些困难、思路等方面进行了探讨。     

自然数码立方和映射数列的研究

证明了图(N，T)中有且仅有9个圈，并给出了对任意自然数n 0，存在自然数k0，当k≥k0时，T k(n 0) 进入相应圈的充要条件。     

高校男生1000m跑教学方案的优化设计及应用

为了更好地适应高校公体课教学的需要，克服在l000m跑教学训练中存在的主观性和盲目性。力争在短时间较大幅度的提高男生1000m跑成绩。本文在文献资料研究和调查访问的基础上。通过正交设计和验证实验相结合的方法，选取最佳教学训练因素指标组合成高校男生1000m跑教学的优选方案，为其进行1000m跑量化教学训练提供科学依据。     

关于χ2 检验的一个注记

对比率的显著性检验与df=1的χ2检验的关系进行了深入探讨,并在各种情况下证明了χ2=z2。     

多媒体视讯会议技术的分析与比较

多媒体视讯会议技术的发展经历了基于电路交换网络和基于lP网络的两个阶段,随着网络宽带技术的发展和普及,多媒体视讯技术的逐步成熟,人们对多媒体视频业务及应用的概念逐步了解,并在视讯会议、远程医疗、远程教育、远程监控、家庭娱乐、流媒体技术、移动视频通信等多个方面都有的广泛应用。本文分析了H.320、H.323、SIP三种视讯技术,然后比较了它们的差异,最后得出SIP协议必将是多媒体视讯会议的主宰。     

表面活性剂在化学发光反应中的作用

数种表面活性剂对鲁米诺-H_2O_2-Fe~(3+),光泽精H:O。AllO和2,9一二甲基一1,IG菲咯琳一H:O。-Cu’”三种化学发光反应的影响情况进行了试验研究,对表面活性剂在化学发光反应中的作用及机理进行了初步讨论.     

Serum apolipoproteins in the patients of myocardial infarction in different age groups

The level of serum cholesterol (Ch), serum-high density lipoprotein cholesterol (HDLc), serum-low density lipoprotein cholesterol (LDLc), serum very low density lipoprotein cholesterol (VLDLc), Triglyceride (Tg), Apolipoprotein A-1, B and ratio of Apolipoprotein A1/B were observed in 151 survivors of myocardial infarction in different age groups. A significant increase was found in the level of triglyceride, LDLc, apolipoprotein-B and a significant decrease in apolipoprotein-A1 and the ratio of apolipoprotein A1/B. No significant alteration was found in serum cholesterol, HDLc except in the age group of 31–40 years and 41–50 years and VLDLc. Thus, serum Apo A-1 and Apo-B may be considerably better markers for coronary artery disease than traditional lipid parameters.     

Effects of short-term hormone replacement on atherogenic indices in Indian postmenopausal women

Indian ethnicity by itself is a strong risk factor for development of CAD in Indian postmenopausal women due to lower HDL levels as compared to Whites and women of oriental origin. We evaluated and compared the short-term effects of menopause, estrogen replacement therapy and combined estrogen and progestin replacement therapy on various atherogenic indices. 40 postmenopausal women, both surgical and natural (20 each) were selected. 10 surgical postmenopausal women were given 0.625 mg conjugated estrogens daily for 6 months and 10 natural postmenopausal women were given 0.625 mg conjugated estrogen with 2.5 mg medroxyprogesterone acetate daily. 20 women were included in the control group and given placebo. Fasting venous blood samples were analyzed for extended lipid profile and calculated atherogenic indices before starting the therapy and after 1,3 and 6 months. LDL and Apolipoprotein B increased (p<0.05) and those of Apolipoprotein A1 and HDL decreased in the control groups. In both the study groups levels of serum cholesterol and LDL decreased (p<0.05) and those of HDL and Apolipoprotein A1 increased (p<0.01). LDL/HDL, Apo B/ApoA1, Total Cholesterol/HDL decreased significantly (p<0.05) in both the study groups compared to the control groups. The effect of estrogen alone was more significant as compared to combination therapy. Log Triglycerides (TG)/HDL ratio showed a decrease in women on estrogen alone but the difference was not significant. Our study confirms that short term HRT has a favorable effect on atherogenic indices in Indian postmenopausal women.     

线粒体nad1基因内含子在稻族系统学研究中的价值——兼论Porteresia的系统位置

在植物的系统与进化研究中，相对于叶绿体和核基因片段来说，线粒体基因片段由于其分辨率较低、结构复杂而较少应用到系统学研究中。本研究选用nad1基因的第2内含子序列探讨了稻族Oryzeae的系统发育关系，并着重分析了单型属Porteresia的系统学位置，并在此基础上探讨了nad1基因内含子序列的系统学意义以及空位性状在系统发育重建中的价值。本研究结果支持将稻族分为两个亚族（Oryzinae和Zizaniinae）的处理，稻族中假稻属Leersia与稻属Oryza最近缘，Porteresia coarctata不应该单独成属而应处理为稻属的成员。本研究表明，nad1第2内含子具有一定的系统发育信息，尤其是在较高分类等级的系统发育重建中具有较大价值；同时表明空位的合理利用将在已有序列信息基础上提供更多的系统发育信息。     

论提高中文搜索引擎质量的途径

随着网络信息数量的迅猛增长，搜索引擎的网络导航作用日益增强，然而搜索引擎自身也存在“信息过载”、“信息超量”的现象，如何克服上述现象，向用户提供数量适宜、质量优良的信息是目前迫切需要解决的问题。本文立足于本文搜索引擎，在分析了我国搜索引擎的发展状况和存在的问题之后，简单论述了可以提高中文搜索引擎质量的几条途径。