学术期刊h指数的时间演变规律研究     

俞立平 《情报杂志》2015,(1)

以《科学学研究》为例,分析了h指数的时间演变规律,发现h指数呈现出成长曲线的特征,该期刊1996年进入成长起,2005年进入成熟期。在进入成熟期之前,期刊的h指数和篇均被引量之间高度线性相关,也就是说在成熟期之前,可以用篇均被引量代替h指数来进行期刊评价。  相似文献   

Abdominal Obesity Associated with Elevated Serum Butyrylcholinesterase Activity,Insulin Resistance and Reduced High Density Lipoprotein-Cholesterol Levels     

Surapon Tangvarasittichai  Suthap Pongthaisong  Suwadee Meemark  Orathai Tangvarasittichai 《Indian journal of clinical biochemistry : IJCB》2015,30(3):275-280

Abdominal obesity (AO) has a strong correlation with cardiovascular disease and has been linked to Alzheimer’s disease and type 2 diabetes. We investigated the association between AO and elevated serum butyrylcholinesterase (BChE) activity, insulin resistance and the serum lipid profile, including triglyceride (TG), HDL-cholesterol (HDL-C) and LDL-cholesterol (LDL-C) levels in AO and non-AO women subjects. A total of 500 AO subjects (age 49.1 ± 10.5 years), and 142 non-AO women subjects (age 49.9 ± 11.9 years) were enrolled for the general biochemistry tests, serum BChE, fasting insulin and homeostasis model assessment of insulin resistance (HOMA-IR). Body mass index, waist circumference, Blood pressure (BP), plasma glucose (Glu), triglyceride (TG), BChE, insulin, HOMA-IR were significantly higher and HDL-C levels were significantly lower in AO subjects (p < 0.05). Waist circumference was significantly correlated with BP, Glu, TG, BChE, insulin and HOMA-IR in AO subjects. Multiple logistic regression demonstrated that AO was associated with elevated BChE, HOMA-IR, hypertension and reduced HDL-C after adjusting for these variables. AO is associated with elevated BChE, insulin resistance, HT and reduced HDL-C. These may predict the development of type 2 diabetes mellitus and may be associated with cognitive disorder in the future, both are mediated through insulin resistance.  相似文献   

探析高职学生在高中阶段的考试心理问题     

王莹华 《黄冈职业技术学院学报》2015,(1):69-72

为全面了解高职学生心理状况、提升其学习能力,试从其高中时期考试心理困惑及产生原因着手进行分析,以找出合适的解决方法。高中毕业生因考试压力带来心理困惑,既影响成绩发挥,也影响其身心健康。社会、家长要转变人才评价观念,注重培养学生心理素质;学生要形成正确的考试认知、树立自信心,努力学习;避免把过去的心理困惑带到新的学习阶段,影响身心健康发展。  相似文献   

2008-2017年中国作者科学引文索引扩展版(SCI-E)收录论文撤稿情况分析及思考   总被引：1，自引：0，他引：1  

范姝婕  付晓霞 《编辑学报》2019,31(1):51-55

近年来,中国论文大规模撤稿事件屡次爆发。本文通过检索2008—2017年科学引文索引扩展版(Science Citation Index Expanded,SCI-E)收录的论文,对SCI-E收录的论文撤稿概况及中国作者撤稿论文的逐年变化、撤稿原因、来源期刊、来源期刊的影响因子和学科分区等进行分析。在此基础上,探讨撤稿时滞及撤稿事件背后的原因、意义和影响,并对大数据与人工智能时代下同行评议制度的完善和期刊未来发展趋势提出思考。  相似文献   

岳阳职业技术学院学报“应用技术研究”栏目2009—2010年载文计量分析     

马余平 《岳阳职业技术学院学报》2011,26(5):120-124

采用文献计量学的分析方法,对《岳阳职业技术学院学报》"应用技术研究"栏目2009-2010年的载文、作者等情况进行统计。结果表明:该刊12期"应用技术研究"栏目共载文75篇,平均每期载文6.25篇;共有作者159人,平均每篇约2.12人;基金项目论文占37.3%;论文合著率54.67%,合作度2.12;第一作者高级职称占41.3%;论文时滞较短;校内外稿件录用比例在6:4左右浮动。作者群体合作力度不够大、基金论文率不足,建议通过提高载文量,建立作者信息库,拓宽稿源渠道,充分发挥编委作用等方面来进一步提高刊物质量。  相似文献   

Characterization of (68)Zn uptake, translocation, and accumulation into developing grains and young leaves of high Zn-density rice genotype     

Wu CY  Feng Y  Shohag MJ  Lu LL  Wei YY  Gao C  Yang XE 《Journal of Zhejiang University. Science. B》2011,12(5):408-418

Zinc (Zn) is an essential micronutrient for humans, but Zn deficiency has become serious as equally as iron (Fe) and vitamin A deficiencies nowadays. Selection and breeding of high Zn-density crops is a suitable, cost-effective, and sustainable way to improve human health. However, the mechanism of high Zn density in rice grain is not fully understood, especially how Zn transports from soil to grains. Hydroponics experiments were carried out to compare Zn uptake and distribution in two different Zn-density rice genotypes using stable isotope technique. At seedling stage, IR68144 showed higher ⁶⁸Zn uptake and transport rate to the shoot for the short-term, but no significant difference was observed in both genotypes for the long-term. Zn in xylem sap of IR68144 was consistently higher, and IR68144 exhibited higher Zn absorption ratio than IR64 at sufficient (2.0 μmol/L) or surplus (8.0 μmol/L) Zn supply level. IR64 and IR68144 showed similar patterns of ⁶⁸Zn accumulation in new leaves at seedling stage and in developing grains at ripening stage, whereas ⁶⁸Zn in new leaves and grains of IR68144 was consistently higher. These results suggested that a rapid root-to-shoot translocation and enhanced xylem loading capacity may be the crucial processes for high Zn density in rice grains.  相似文献   

利用高校综合资源构建平地瑶音乐的传承发展体系     

吴祖斌 《贺州学院学报》2011,27(3)

平地瑶民歌凝聚了瑶族人民的聪明才智,彰显出瑶族音乐文化久远、古朴的神韵,由于它形成的历史原因,既保留了瑶族自身固有的文化,又吸收汉、壮族文化,因而具有开放性、多元性文化特征。利用好高校人文、教育与文化综合资源,构建瑶族音乐传承发展体系,造就一个适合平地瑶音乐生存与发展的空间。  相似文献   

谈初中日语“学案”的应用     

杨慧 《大连教育学院学报》2015,(2):40-41

初中日语教学中学案的应用,是现代外语教学的大势所趋,但在实际的应用中,还存在着很多问题,严重影响着其应有的作用。因此要不断探索,采取相应的措施,以弥补这些不足。  相似文献   

面向“两性一度”标准的潮汐学课程教学改革     

聂红涛  李威  韩桂军  陈儒  凌国维 《教育教学论坛》2022,(4)

以学生为中心,以提升综合素质能力为导向,依据“两性一度”标准对海洋潮汐学课程进行了教学改革。通过优化教学内容,贯通体现高阶性;以问题为导向,采用启发式教学体现创新性;重视实践训练,科教融合体现挑战度;多方式考核方式融合,优化考评体系,强化能力素质培养,促进课程教学质量和教学效果提升。实践表明,本课程教学改革增强了学生学习的主动性,加深了对课程内容的理解和应用,培养了学生的创新意识和科学思维方法,提升了学生解决复杂问题的综合能力。  相似文献   

Does state-mandated financial education reduce high school graduation rates?     

《Economics of Education Review》2023

Concerned about low levels of financial literacy among teens and the importance of their looming financial decisions as emerging adults, state policymakers have expanded high school personal finance graduation requirements. Did these added requirements create an additional barrier for students? Comparing students in states with and without standalone personal finance course requirements before and after the requirements went into place, I provide evidence that these requirements did not reduce graduation rates overall, by race, by gender, or by family income. Existing research quantifies improvements in debt and credit behaviors, and these findings suggest there are not simultaneous adverse effects overall or for at-risk students.  相似文献