科技期刊广告运动策略

认为广告运动是科技期刊抢占国内外科技期刊市场的必由之路.论述广告对于科技期刊的重要性;指出调查研究是期刊质量取向及其广告运动的基础;提出加入WTO后中国科技期刊面临的机遇,以及严峻形势下广告运作应当采取的对策:发展广告策略,制定广告计划,下大力气开展发行促销活动.认为执行广告运动策略是办刊宗旨的体现,是期刊生存的根本.     

Directed collaboration patterns in funded teams: A perspective of knowledge flow

Collaborations in funded teams are essential for understanding funded research and funding policies, although of high interest, are still not fully understood. This study aims to investigate directed collaboration patterns from the perspective of the knowledge flow, which is measured based on the academic age. To this end, we proposed a project-based team identification approach, which gives particular attention to funded teams. The method is applicable to other funding systems. Based on identified scientific teams, we detected recurring and significant subgraph patterns, known as network motifs, and under-represented patterns, known as anti-motifs. We found commonly occurred motifs and anti-motifs are remarkably characterized by different structures matching certain functions in knowledge exchanges. Collaboration patterns represented by motifs favor hierarchical structures, supporting intensive interactions across academic generations. Anti-motifs are more likely to show chain-like structures, hindering potentially various knowledge activities, and are thus seldom found in real collaboration networks. These findings provide new insights into the understanding of funded collaborations and also the funding system. Meanwhile, our findings are helpful for researchers, the public and policymakers to gain knowledge on research(ers) evolution, particularly in terms of primordial collaboration patterns.     

科技期刊质量管理应加强技术加工

技术加工是科技期刊编辑出版流程的必要环节,其工作力度与细心程度对质量管理的成败举足轻重。那些被认为是细枝末节的技术性差错已经或正在对期刊质量造成严重的伤害,不可忽视。加强技术加工质量管理,并不断总结和改进,能够促进期刊个性特色和良性发展态势的形成。     

论科技期刊营销渠道的建设

分析目前科技期刊渠道营销中存在的问题.认为:要想在渠道竞争中保持优势,就要在原有渠道的基础上有所创新;现代渠道改革创新的重心在于服务,利用并发展不同的新环境和新技术,是科技期刊渠道创新的主题.     

通过多种形式组织专题提升科技期刊质量

[目的]探索医学期刊组织专题的有效途径,为国内医学期刊提供借鉴与参考。[方法]以《放射学实践》杂志为例,介绍其通过与协办单位合作、及时报道重大科研成果、围绕突发公共卫生事件等多种方式进行专题组稿的经验和体会;比较、分析专题论文和非专题论文的质量。[结果]《放射学实践》近3年成功组织了22个专题,极大地扩大了本刊在业内的影响。专题论文的篇均被引频次和篇均下载量均明显高于非专题论文。[结论]医学期刊编辑应该结合自身杂志特点,充分发挥积极性和主动性,勇于探索,敢于创新,不断开拓专题组稿的新方法和新形式,为提高期刊质量不懈努力。     

Polymorphisms in genes involved in folate metabolism as maternal risk factors for Down syndrome in China

Objective: To explore the relationship between genetic polymorphisms in methylenetetrahydrofolate reductase (MTHFR), methionine synthase reductase (MTRR), the central enzymes in folate metabolism that affects DNA methylation and synthesis, and the risk of Down syndrome in China. Methods: Genomic DNA was isolated from the peripheral lymphocytes of 64 mothers of children with Down syndrome and 70 age matched control subjects. Polymerase chain reaction and restriction fragment length polymorphism were used to examine the polymorphisms of MTHFR 677C→T, MTRR 66A→G and the relationship between these genotypes and the risk of Down syndrome was analyzed. Results: The results show that the MTHFR 677C→T polymorphism is more prevalent among mothers of children with Down syndrome than among control mothers, with an odds ratio of 3.78 (95% confidence interval (CI), 1.78～8.47). In addition, the homozygous MTRR 66A→G polymorphism was independently associated with a 5.2-fold increase in estimated risk (95% CI, 1.90～14.22). The combined presence of both polymorphisms was associated with a greater risk of Down syndrome than the presence of either alone, with an odds ratio of 6.0 (95% CI, 2.058～17.496).The two polymorphisms appear to act without a multiplicative interaction. Conclusion: MTHFR and MTRR gene mutation alleles are related to Down syndrome, and CT, TT and GG gene mutation types increase the risk of Down syndrome.     

参考文献的著录质量亟待提高

指出参考文献著录中存在的9个方面的问题,包括机械式转引,非必要的引用,著录时效性不强,引用非正式文献,引用地域性窄,文献引用过少,不恰当自引,剽窃及文献著录形式上的错误,并提出一些在编辑加工过程中保证参考文献著录质量的措施.     

数字水准仪应用中的若干问题探讨

对数字水准仪的基本原理进行了分析研究,对两种类型的数字水准仪进行了场地和野外检测,并对其检测数据进行了理论探讨,可为国家一、二等水准测量项目数字水准仪的应用提供理论依据和相应的参考意见。