中学教科研论文发表量的校际差异——黄石市主城区19所中学1996～2005年间论文发表的计量分析

对黄石市主城区19所中学1996～2005年间教师群体论文情况实施计量分析，结果发现：重点中学的10年论文总平均分值及1999、2002和2004年度的平均分值均显著高于普通中学；高级中学的10年论文总平均分值及2003和2005年度的平均分值均显著高于初级中学。因此，中学教师群体论文发表量的校际差异明显。

我国211大学论文发表量区域分布特征研究

本文以我国知识产出的区域分布特征为研究对象,以CNKI数据库为数据来源,选取全国112所"211"工程高校在2005年至2014年间所发表的学术论文统计数据为主要研究数据,研究其发表总量、被引频次、典型学科领域的发表量以及发表量在各地区的分布情况。研究基于地理信息系统的理论和方法,依据自动和人工相结合方式获取的统计数据,制作论文发表专题地图,从宏观层面展示论文发表的区域分布状况。基于专题地图,创新性地从地理空间思维的角度,分析全国论文发表情况的地区性差异,结合区域经济发展和人口分布数据,探讨形成此分布状况的可能原因。通过展示和分析学术论文的区域分布,全面了解我国知识产出的宏观布局及区域分布特征,为科研管理提供科学的数据支撑,有利于我国科研资源的优化配置,促进区域科教水平的均衡发展。

精准化管理模式在我国医院应用现状的文献计量学分析

目的了解关于精准化管理模式在我国医院应用现状的文献发表情况。方法运用计算机检索中国学术期刊网络出版总库、万方数据库和中国生物医学文献数据库公开发表的关于医院精准化管理的文献,对文献年代、地区、作者、基金支持、期刊、关键词等方面进行分析。结果共获得3 234篇关于医院精准化管理的有效文献,发表在521种刊物上,文献年发表量呈现增长趋势,但基金论文较少,地区发展不均衡,文献质量不高。结论医院精准化管理模式在研究质量、广度与深度等方面有待进一步提高。

河北省某三甲医院2016—2018年发表论文统计分析

目的分析河北省某三甲医院2016—2018年科研论文发表情况,为促进医院科研发展和高质量论文发表提供科学依据。方法运用Excel、文献计量法对医院的论文发表的总体情况进行描述分析,并按照职称、专业、年龄段等指标进行统计分析。结果近3年来,该院的论文数量、质量均有明显提高。但仍存在SCI文章比例低,初级职称、外科、后勤、医师外人员发文量较少;中级、副高职称人员、41~50岁和51~60岁医师人群是论文发表的骨干。结论该院在科研论文产出方面存在明显短板,应采取培训和激励奖惩等措施,促进全院科研论文产出的积极性以及水平的提高,推进未来医院科研的发展。

中国篮球职业联赛的现状及发展——基于2009—2014年四种中国体育类核心期刊的文献计量分析

采用文献计量方法对中国知网上北京体育大学学报、成都体育学院学报、体育文化导刊和体育科学期刊上2009—2014年发表的关于中国篮球职业联赛的研究论文进行了数量分布、期刊分布和研究重点的分析。结果发现:人们对中国篮球职业联赛发展过程中出现的问题研究越来越全面;北京体育大学学报发表的相关文献最多,且涵盖的方面较广;研究主题包括中国篮球职业联赛在发展过程中出现的问题,发展对策和未来趋势。

湘潭市疾病预防控制中心1998～2002年论文发表统计分析

科技论文是科技活动过程中形成的知识形态成果，是科学研究最直接的产出形式之一，科技论文的数量和质量反映了科学技术活动对现有知识体系的贡献。为了解本中心近5年来科技论文发表的现状，促进疾病预防控制工作的发展，本文收集了1998～2002年在全国各类专业杂志上公开发表的论文，进行了统计分析，现将结果报告如下。

对改革开放以来经济学类高频被引文献的浅析

改革开放40年是中国经济学快速发展的黄金时期。中国经济学不仅从萌芽逐渐走向成熟,而且形成了一系列权威性和引领性的经济学期刊和经济学研究阵地。本文从发表量和被引量的视角,对390篇高频被引文献的来源机构、来源期刊、第一作者、文献研究内容进行了系统分析和总结。结果表明,1979～2017年经济学文献发表量年均增长速度为19%;形成了一系列权威性的学术期刊,如《经济研究》《会计研究》《中国工业经济》等;于光远、蔡昉、林毅夫、杨瑞龙等一大批经济学学者在中国经济学发展进程中发挥了重要作用;中国社会科学院、北京大学、中国人民大学等科研院所和高校成为中国经济学发展的前沿阵地。

Increased Endogenous Methyl Jasmonate Altered Leaf and Root Development in Transgenic Soybean Plants

Methyl jasmonate （MeJA） is a plant-signaling molecule that regulates plant morphogenesis and expression of plant defense genes. To determine the role of the endogenous MeJA levels in the development of plants, transgenic soybean [Glycine max （L.） Merrill] plants harboring NTR1 gene encoding for jasmonic acid carboxyl methyltransferase （JMT） were produced. The activation of NTR1 gene expression resulted in the production of MeJA. Overexpression of the NTR1 cDNA under the regulation of cauliflower mosaic virus （CaMV） 35S promoter in the transgenic soybean plants was confirmed using Northern blot analysis. The significant differences in leaf and root growth patterns were observed between the transgenic plants and the wild-type plants. The leaves of the transgenic plants were slightly elongated in length but dramatically narrowed in width compared with the nontrans-formed wild-type plants. In addition, elongation of primary root was inhibited in the overexpressed transgenic soybean plantlets, whereas the development of lateral root was stimulated relative to the nontransformed plants. The leaves of the transgenic plants showed 2-2.5-fold higher levels of MeJA than the control plants. These results indicated that the increased endogenous levels of MeJA is involved in regulation of morphogenesis in soybean plants.

博导学术论文的比较与分析

通过布拉德福分布的区域划分统计法,对天津医科大学50位博导的发表论文和被引用文献量进行多项指标的整合、排序和分析。

Upregulation of hypoxia inducible factor 1α mRNA is associated with elevated vascular endothelial growth factor expression and excessive angiogenesis and predicts a poor prognosis in gastric carcinoma

AIM： To investigate the implication of the hypoxia inducible factor HIF-1α mRNA in gastric carcinoma and its relation to the expression of vascular endothelial growth factor （VEGF） protein, tumor angiogenesis invasion/metastasis and the patient＇s survival. METHODS： In situ hybridization was used to examine expression of HIF-1α mRNA, and immunohistochemical staining was used to examine expression of VEGF protein and CD34 in 118 specimens from patients with gastric carcinoma. RESULTS： The positive rates of HIF-1α mRNA and VEGF protein were 49.15% and 55.92%, respectively. Positive expressions of HIF-1α and VEGF in stage T3-T4 tumors and those with vessel invasion, lymph node metastasis and distant metastasis were dramatically stronger than stage T1-T2 cases and those without vessel invasion, lymph node metastasis and distant metastasis. The mean microvascular density （MVD） in stage T3-T4 tumors and those with vessel invasion, lymph node metastasis and distant metastasis was significantly higher than stage T1-T2 tumors and those without vessel invasion, lymph node metastasis and distant metastasis. The mean MVD in tumors with positive HIF-1α and VEGF expression was significantly higher than that in tumors with negative HIF-1α and VEGF expression. The expression of HIF- 1α was positively correlated with VEGF protein. There were positive correlations between MVD and expression of HIF-1α and VEGF. The mean survival time and the S-year survival rate in cases with positive expression HIF-1α and VEGF and MVD value ≥ 41.5/0.72 mm^2 were significantly lower than those with negative expression of HIF-1α and VEGF and MVD value 〈 41.5/0.72 mm^2. CONCLUSION： Overexpression of HIF-1α is found in gastric carcinoma. HIF-1α may induce the angiogenesis in gastric carcinoma by upregulating the transcription of VEGF gene, and take part in tumor invasion and metastasis. They can be used as prognostic markers of gastric cancer in clinical practice.

Recent Advances in Flame Tomography

To reduce greenhouse gas emissions from fossil fuel fired power plants,a range of new combustion technologies are being developed or refined,including oxy-fuel combustion,co-firing biomass with coal and fluidized bed combustion.Flame characteristics under such combustion conditions are expected to be different from those in normal air fired combustion processes.Quantified flame characteristics such as temperature distribution,oscillation frequency,and ignition volume play an important part in the optimized design and operation of the environmentally friendly power generation systems.However,it is challenging to obtain such flame characteristics particularly through a three-dimensional and non-intrusive means.Various tomography methods have been proposed to visualize and characterize flames,including passive optical tomography,laser based tomography,and electrical tomography.This paper identifies the challenges in flame tomography and reviews existing techniques for the quantitative characterization of flames.Future trends in flame tomography for industrial applications are discussed.

Detection of Photons and Electrons Using a Semiconductor Alpha Detector

The response of a silicon alpha detector to beta particles, electrons and photons was investigated using measurements and Monte Carlo simulations. This information is of relevance for in situ alpha spectrometry from different surfaces at ambient air pressure. According to the simulations, photon detection efficiencies were more than two orders of magnitude smaller than those of electrons. Photons generate signals mainly by Compton electrons. Counts originating from beta particles, electrons and photons were usually below 1 MeV in energy and no clear peaks could be identified from the measured spectra. Unequivocal identification of radionuclides emitting beta particles, electrons and photons is not possible when a mixture of different radionuclides is present in the source. However, radionuclide classification according to their emission energies appears to be possible. Surface contamination measurements will benefit from this capability.

Detection of PRL-2 gene expression in hepatocellular carcinoma by real-time fluorescence quantitative PCR

Objective:To quantitatively detect the expression level of PRL-2 in primary hepatocellular carcinoma using real-time fluorescence quantitative PCR.Methods:Total RNA isolated from human HCC and liver tissue adjacent to the tumor was reversely transcribed into cDNA.Real-time fluorescence quantitative PCR(Q-PCR) method was used to analyze the expres-sion level of PRL-2 gene.Results:The Q-PCR method was performed successfully to precisely detect RNA level.PRL-2 was expressed in all portal vein tumor thrombosis(PVTT) and HCC,but only in some paratumor tissue.The highest expression level of PRL-2 gene was recorded in PVTT;meanwhile expression level of PRL-2 was higher than that in paratumor liver tis-sues and in HCC(P < 0.01),and it was higher in HCC than that in paratumor liver tissues.Conclusion:The Q-PCR may be the most precise method to quantitatively detect RNA level and can be used in gene expression changes.The PRL-2 gene has higher expression in PVTT than that in HCC and in paratumor liver tissue cells,indicating that it plays an important role in the development and metastasis of the HCC.

The Study on the Gene Expression of Preimplantation IVF Bovine Embryos

The cattle different stage embryos obtained from in vitro was studied using the technology of single preimplantation embryo mRNA different display:single 8-cell and blastocyst stage embryos were studied using technology of mRNA different display and one different fragment was found. The result suggested that this fragment displayed high homology (99%) to cattle mRNA for ribosomal protein L31. Then to detect the expression of RPL31mRNA in 8 cell and blastocyst stage embryos by real-time quantitative PCR,the result showed the relative amount of 8 cells was 3.2 times of blastocyst's.

Development of Elementary School Teachers＇ Self-Regulated Learning Exploratory Factor Scale

Self-regulated learning （SRL） is one of the precious ways in teachers＇ professional development, and its operation level includes different factors. With studies abroad and our preliminary investigation as base, this study developed a scale to test the factors SRL includes. According to the result of 905 teachers working in elementary school by exploratory factor analysis, the SRL for elementary teachers is consisted of its sociality （it included selecting leads and seeking for instructing）, its motivation（it included self-improvement and self-excelling）, its methods（it included strategy use and habitual behavior）, and its outcomes（it included extensive reading and teachers＇ professional development）. All the result indicated Teachers＇ SRL Scale had clear factor structure, good reliability and validity. It can be used to test the current operating situation of SRL for teachers working in elementary school.

Enhanced Growth and Yield Performance of Cassava Peel Compost and Mineral Fertilizer on Corchorus olitorius L.

Application of inorganic fertilizers improves crop yields but costs and adverse health effects often discourage their applications. This study therefore aims at evaluating the combined effects of cassava peel compost with poultry manure and mineral fertilizer on growth and yields of Corchorus olitorius. Pots （factorial laid out in a randomized complete block design） and field （split-plot with fertilizer being the main effect and the varieties the sub plot effect） experiments were carried out during rainy season at Ibadan, Nigeria. Treatments consisted of 0, 5, l0 and 20 t/ha composts prepared from cassava peel and poultry manure in ratio 3：1 and mineral fertilizer （NPK 15：15：15） at the rate of 250 kg/ha, using two varieties of C. olitorius. Five and six weeks after planting （WAP）, plants were assessed for growth and yields in pot and field experiments respectively, and also in residual studies. Application of compost significantly improved growth （heights） （36.50-41.56 cm）, while morphological and dry weight values increased with increase in compost. Marketable yield increase of 13.2%, 22.3%, 32.1% and 29.3% were recorded using 5, 10, 20 t/ha compost and NPK fertilizer respectively in the field. Corresponding increase when ratooned were 40.0%, 42.9%, 57.1% and 52.0%, respectively. Application of compost at the rate of 20 t/ha performed better in the main and residual effect experiments compared to NPK fertilizer and other compost rates. Application of cassavas peels compost at the rate of 20 t/ha proved to be adequate for optimum growth and yield performance of C. olitorius.

Problems Related to Excitation Winding Surface Temperature Measurement of a Salient Pole Synchronous Generator in Rotation

This paper addresses some of the problems related to direct surface temperature measurement of a salient pole synchronous generator excitation winding in rotation. Excitation winding temperature is used for determining the dynamic limit in a PQ diagram. The paper also addresses procedures of improving the accuracy of surface temperature measurement using the contact DS 18B20 digital temperature probes. The paper also provides experimental results of direct temperature measurement of the excitation winding surface conducted in the salient pole synchronous generator in the rotation.

Dynamic change of xylanase activity and gene expression during wheat germination on As（III） stress

Through water cultivating method, the dynamic changes of xylanase activity in seed, root and plumule of wheat with different As （III） concentration treatment were studied. The results indicated that the order of average xylanase activity was seed〉plumule〉root. With the increasing concentration of As （III）, the xylanase activity elevated first then dropped in seed, but it descended first then ascended in root and plumule. As the sampling time prolonged, the xylanase activity of seeds climbed first then dropped on the four as （III） concentration, the same trend also appeared in pulume, as the as （Ill） concentration went up, the xylanase activity moved up simultaneity. Semi-quantity Reverse Transcription Polymerase Chain Reaction was used in the study, the results indicated that, the xylanase gene began to express at 132 h on 0 mg/L As （III） concentration and at 120h on other concentration in the leaves of wheat.

中学教师论文发表校际差异研究——以湖北省黄石市主城区18所中学教师十年发文为例

对黄石市主城区18所中学的教师在2000～2009年间论文发表数量和主题内容进行分析,结果发现:①从十年论文总量和十年校均发文量来看,重点中学显著高于普通中学,高级中学显著高于初级中学;②从十年论文发表的主题来看,"学科教学"类比例最大,"文学与科普"类第二,其他类别所占比例极小;③从变化趋势来看,重点中学和高级中学在2002、2004年发文量上有大幅增加,而普通中学和初级中学的发文增量较小。

1998-2002年《图书情报工作》论文及作者统计分析

通过对《图书情报工作》1998-2002年发文量和作者进行统计分析,研究其发文热点、特点和选题方向以及作者人数、 性别、职称、年龄、地区和系统等,找出核心作者,计算出合作度与合著率。