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Elliott JA 《Cryobiology》2011,(2):159-160
The advent of peer review is relatively recent, yet it strongly influences the way we perform and evaluate research. The absence of the perfect peer for multi- and inter-disciplinary research makes evaluation more challenging. By recognizing and addressing the no-peer problem multi- and interdisciplinary research can be effectively communicated and evaluated. 相似文献
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《Journal for Nature Conservation》2014,22(5):471-473
Conservation biology is often defined as a “mission driven crisis discipline”, and as such research priorities should ideally parallel the relative importance of different conservation threats. Conservation research has increased exponentially over the last 22 years, rising from <150 articles in 1990 to >4000 articles in 2012. However, this growth has not and may not necessarily reflect changes in research needs. Consequently, it remains uncertain if growth and prioritization have been consistent between research themes, or subdisciplines. In other words, it is unknown if conservation priorities change in relation to research needs, or if instead to shifts in funding, which may or may not correspond to true research needs. Future conservation research priorities should ideally be based on conservation needs alone and must account for threats at both the immediate and long-term scales. 相似文献
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Research focusing on timely diagnosis and treatment of colorectal cancer is necessary to improve outcomes for people with cancer. Previous attempts to consolidate research on time to diagnosis and treatment have noted varied methodological approaches and quality, limiting the comparability of findings. This systematic review was conducted to comprehensively assess the scope of methodological issues in this field and provide recommendations for future research. Eligible articles had to assess the role of any interval up to treatment, on any outcome in colorectal cancer, in English, with no limits on publication time. Four databases were searched (Ovid Medline, EMBASE, EMCARE and PsycInfo). Papers were screened by two independent reviewers using a two-stage process of title and abstract followed by full text review. In total, 130 papers were included and had data extracted on specific methodological and statistical features. Several methodological problems were identified across the evidence base. Common issues included arbitrary categorisation of intervals (n = 107, 83%), no adjustment for potential confounders (n = 65, 50%), and lack of justification for included covariates where there was adjustment (n = 40 of 65 papers that performed an adjusted analysis, 62%). Many articles introduced epidemiological biases such as immortal time bias (n = 37 of 80 papers that used survival as an outcome, 46%) and confounding by indication (n = 73, 56%), as well as other biases arising from inclusion of factors outside of their temporal sequence. However, determination of the full extent of these problems was hampered by insufficient reporting. Recommendations include avoiding artificial categorisation of intervals, ensuring bias has not been introduced due to out-of-sequence use of key events and increased use of theoretical frameworks to detect and reduce bias. The development of reporting guidelines and domain-specific risk of bias tools may aid in ensuring future research can reliably contribute to recommendations regarding optimal timing and strengthen the evidence base. 相似文献
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Journal of Industrial Microbiology &; Biotechnology - 相似文献
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Hasenclever D 《Biometrical journal. Biometrische Zeitschrift》2006,48(6):911-3; discussion 914-5
Invited comment on Vach W. and dePoint Christensen R. (2006). Making efficient use of patients in designing phase III trials investigating simultaneously a set of targeted therapies with different targets, Biometrical Journal 48, 897-907. For complexity reasons the designs proposed by Vach et al. will probably not be used in initial drug registration trials. But they may be an option for established study groups that run treatment-optimisation or indication-extension trials investigating targeted drugs that are already registered. 相似文献
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Nicholson JM 《BioEssays : news and reviews in molecular, cellular and developmental biology》2012,34(6):448-450
Funding agencies (and journals) seem to be discriminating against ideas that are contrary to the mainstream, leading to leading to the preferential funding of predictable and safe research over radically new ideas. To remedy this problem a restructuring of the scientific funding system is needed, e.g. by utilizing laymen--together with scientists--to evaluate grant proposals. 相似文献
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Jones B 《Biometrics》2003,59(3):694-700
In parentage analysis studies, the parameters of interest typically are not the parent assignments themselves, but population parameters such as variance in fertility, self-pollination rate, or average dispersal distances. The precision of parameter estimates is affected by two factors: the number of offspring under consideration, and the precision with which the offspring can be assigned to parents. When assignment of parents is based on genetic information, the confidence in assignments is affected by the number and polymorphism of the loci considered, and by the number of potential parents in the population. Studying larger populations may yield higher numbers of offspring, but since larger populations contain more potential parents, more (or more highly polymorphic) loci are necessary to attain a given level of confidence in the parent assignments. This article addresses how to relate the size of the population and the number of loci when designing a study. It is shown that the number of loci needed to assign all offspring unambiguously is proportional to the logarithm of the population size. In some cases, the constant of proportionality can be determined, eliminating the need for simulation-based projections. Population-wide measures of uncertainty in parent assignments are also introduced, and it is shown that holding uncertainty "steady" as the population size increases also requires increasing the number of loci proportional to the logarithm of the population size. Data from a study of self-pollination are used to illustrate the techniques suggested. 相似文献
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Kamphuis J. A. M. Linschoten M. Cramer M. J. Alsemgeest F. van Kessel D. J. W. Urgel K. Post M. C. Manintveld O. C. Hassing H. C. Liesting C. Wardeh A. J. Olde Bijvank E. G. M. Schaap J. Stevense-den Boer A. M. Doevendans P. A. Asselbergs F. W. Teske A. J. 《Netherlands heart journal》2021,29(5):288-294
Netherlands Heart Journal - The relative new subspecialty ‘cardio-oncology’ was established to meet the growing demand for an interdisciplinary approach to the management of cancer... 相似文献
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台湾海峡位于中国福建和台湾岛之间, 其特殊的海洋环境使得其鱼类物种多样性水平较高并独具特色。本文综述了台湾海峡鱼类物种多样性研究的历程和成果。20世纪以来, 台湾海峡鱼类物种多样性的研究可以划分为早期研究时期、研究起步时期、系统调查时期和综合研究时期4个阶段, 从最初以新种描述为主的零星报道, 到大规模系统性的综合调查和研究; 目前为止, 大陆文献共记录台湾海峡鱼类1390种, 台湾地区文献共记录鱼类1525种, 总计台湾海峡鱼类1697种。这些种类多数为暖水性广布种, 鱼类区系以印度-西太平洋暖水区的印度-马来亚区和中-日亚区过渡海区种为主; 今后台湾海峡鱼类物种多样性的研究应加强两岸合作, 并充分发挥数据库应用的优势地位。 相似文献
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BackgroundThe relationship between silica and the risk of developing lung cancer has been established in previous literature, but how much the level of exposure to silica can increase the risk of lung cancer is a question that has been addressed in this review.MethodsThree electronic databases, including MEDLINE, Scopus, and Web of Science were searched for relevant literature. For the dose-response relationship between exposure to silica and developing lung cancer, we performed a meta-analysis using the random-effects model. For each level of exposure, we calculated the overall risk ratio (RR) with 95% confidence intervals (CI).ResultsNineteen studies were included in the meta-analysis. There was a positive and significant increasing dose-response trend between silica exposure and the risk of developing lung cancer as follows: < 0.50 mg/m3 1.14 (95% CI: 1.05, 1.23; I2 = 79%), 0.50–0.99 mg/m3 1.34 (95% CI: 1.05, 171; I2 = 45%), 1.00–1.99 mg/m3 1.14 (95% CI: 1.00, 1.30; I2 = 70%), 2.00–2.99 mg/m3 1.47 (95% CI: 1.05, 2.06; I2 = 57%), 3.00–3.99 mg/m3 1.44 (95% CI: 0.99, 2.11; I2 = 58%), and ≥ 4.00 mg/m3 1.64 (95% CI: 1.20, 2.24; I2 = 88%). The heterogeneity across studies was mild to moderate.ConclusionsThe presence of a dose-response relationship favors the causal relationship between exposure to silica and developing lung cancer. 相似文献
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Dranseika V Gefenas E Cekanauskaite A Hug K Mezinska S Peicius E Silis V Soosaar A Strosberg M 《Developing world bioethics》2011,11(1):48-54
Two decades have passed since the first attempts were made to establish systematic ethical review of human research in the Baltic States. Legally and institutionally much has changed. In this paper we provide an historical and structural overview of ethical review of human research and identify some problems related to the role of ethical review in establishing quality research environment in these countries. Problems connected to (a) public availability of information, (b) management of conflicts of interest, (c) REC composition and motivation of REC members, and (d) differing levels of stringency of ethical review for different types of studies, are identified. Recommendations are made to strengthen cooperation among the Baltic RECs. 相似文献
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Summary . An approach for determining the power of a case–cohort study for a single binary exposure variable and a low failure rate was recently proposed by Cai and Zeng (2004, Biometrics 60, 1015–1024). In this article, we show that computing power for a case–cohort study using a standard case–control method yields nearly identical levels of power. An advantage of the case–control approach is that existing sample size software can be used for the calculations. We also propose an additional formula for computing the power of a case–cohort study for the situation when the event is not rare. 相似文献