The evaluation of markers of prostatic inflammation and function of the prostate gland in patients with chronic prostatitis

INTRODUCTION: The aim of the study was to determine the numbers of polymorphonuclear (PMN) leukocytes and PMN elastase and citric acid concentrations in chronic prostatitis patients regardless of etiology and in those with Chlamydia trachomatis infection of the prostate gland. MATERIALS AND METHODS: The study involved 46 patients with chronic prostatitis. Expressed prostatic secretions (EPS) were obtained to determine the leukocyte count, PMN elastase (ELISA) and citric acid concentrations (UV method), and the occurrence of C. trachomatis infection (ligase chain reaction). RESULTS: Increased PMN cell counts (> or =10 per high-power field) were found in 73.9% of patients and increased PMN elastase concentration (<250 ng/ml) in 78.3%. In 44.4% of the patients the elastase concentration indicated moderate (250-1000 ng/ml) and in 55.6% acute infection (> or =1000 ng/ml). Decreased citric acid concentration (<18.12 mg/ml) in the EPS was found in 65.2% of the men. C. trachomatis prostate infection was detected in 17.4% of the patients and all of these men had higher inflammation parameters and lower citric acid concentrations. CONCLUSIONS: C. trachomatis prostate inflammation was accompanied by an increase in inflammation markers and a decrease in citric acid concentration.     

《临床神经病学杂志》2005～2007年载文、著者及引文分析

目的分析《临床神经病学杂志》2005～2007年刊载的论文、著者及引文的特点。方法应用文献计量学方法对《临床神经病学杂志》2005～2007年刊载的论文、著者及引文等进行统计分析。结果本刊3年载文量为674篇,期均载文量为37.4篇,篇密度为0.47,有基金项目论文142篇(21.1%);著者主要来自江苏、山东、上海及北京;合作率为93.1%,合作度为4.1;86.6%的论文有引文,其中97%来自期刊,篇均引文为8.6条,普莱斯指数为43.7%。结论《临床神经病学杂志》是具有较高学术质量的科技期刊,在临床神经病学领域具有较大的影响力。     

《中国神经免疫学和神经病学杂志》2003-2005年载文引文及著者分析

目的 分析《中国神经免疫学和神经病学杂志》载文引文及著者特点。方法 采用文献计量学方法，对该刊2003-2005年所载论文的引文率、引文类型、普赖斯指数、自引率以及著者情况等进行分析。结果 该刊2003-2005年共载文332篇，平均引文率为91．3％，篇均引文量为8．66条；引文类型以期刊（96．1％）和专著（3．7％）为主，引文语种以英文为主（81．7％）；普赖斯指数和自引率分别为48．2％、4．84％；著者来自我国28个省、直辖市及自治区，合著率为97．0％，合作度4．47；著者论文享有基金资助者占34．0％。结论 该刊引文内容新颖，拥有水平较高而稳定的作者群，具有广泛的社会影响力，是一高质量的学术性期刊。     

The use and misuse of journal metrics and other citation indicators

This article reviews the nature and use of the journal impact factor and other common bibliometric measures for assessing research in the sciences and social sciences based on data compiled by Thomson Reuters. Journal impact factors are frequently misused to assess the influence of individual papers and authors, but such uses were never intended. Thomson Reuters also employs other measures of journal influence, which are contrasted with the impact factor. Finally, the author comments on the proper use of citation data in general, often as a supplement to peer review. This review may help government policymakers, university administrators, and individual researchers become better acquainted with the potential benefits and limitations of bibliometrics in the evaluation of research.     

Rank-normalized journal impact factor as a predictive tool

Citation data accumulated on articles from the top and bottom 25 of impact factor (IF)-ranked international journals are compared using 59 international geoscience journals from 1998 and 378 Polish geological papers from 1989–1994. There is a minor risk of being uncited when results are published in high-IF periodicals as the average non-citation rate is 0.88 over a 10-year period in this not very rapidly developing scientific discipline. Similarly, the established error levels in the prognosis of expected citation success versus failure based on the extreme IF quartiles as an evaluation tool is low (at most 12.5). Thus the application of the rank-normalized journal IF as a proxy of real citation frequency and, accordingly, as a predictive tool in the a priori qualification of recently published publications is a rational time- and cost-saving alternative (or at least a significant supplement) to traditional informed peer review. Blanket criticism of using IF for decisions in research funding is therefore at least partly exaggerated. This article has not been presented at the conference “The Past, Present, and Future of the Impact Factor and Other Tools of Scientometrics” held in Warsaw (September 26, 2008).     

《中国微侵袭神经外科杂志》2000～2008年载文被引分析

目的从文献引证的角度分析《中国微侵袭神经外科杂志》载文的影响力。方法利用国家知识基础设施（中国知网,CNKI）工程中国引文数据库及中国期刊全文数据库检索2000～2008年载文及载文被引情况,采用Excel表格进行统计与分析。结果9年共刊发论文1907篇,被引用1179篇,被引率为61.8%;其中2003年载文被引率最高（72.9%）。总被引频次3867次,单篇平均被引频次3.30次,单篇被引最高频次为90次。被引频次〉20次论文20篇,其中临床研究15篇,述评4篇,综述1篇;高被引论文中,内容涉及最多的是手术治疗高血压脑出血和垂体腺瘤。引用本刊前3位的杂志分别为《中华神经外科杂志》、《中国临床神经外科杂志》和《立体定向和功能神经外科杂志》。结论本刊具有很强的专业性及较高的学科内影响力,是我国神经外科临床、科研工作的重要信息源;采用5年影响因子评价本刊较2年影响因子更为客观、准确。     

Google Scholar引文检索功能评析

概述了Google Scholar(GS)学术搜索引擎的引文检索功能,并通过实例对比了GS,WS引文数据库的引文检索结果,分析了GS这一新兴学术搜索工具的引文检索功能特点和优劣,提出了其引文检索的相应改进措施。     

我国医药领域专利分布及引用研究

选取2002-2013年间USPTO医药领域的中国专利数据,从引文分析和题录关键词词频统计两个角度入手,分析中国医药领域专利后向引用和前向引用的时间分布、地理分布以及专利权人情况。结果表明我国医药行业与技术领先国家还有一定差距,与美国、加拿大之间的学术交流较多,研发重心在溶解试剂、白细胞计量以及假肢等方面。