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Choosing what scientific project to pursue is the most important decision that scientists at all levels continually face. Time devoted to a project can further desirable knowledge and advance a career or cost years in lost opportunity. Knowing what to consider before embarking on a specific scientific journey, as well as when to drop a project and change course, offers a way of practicing science that keeps us mindful of what is relevant at a given time and place while preserving our freedom to explore the most exciting findings. This article explores both the pressures that restrict this delicate decision-making process and the processes that scientists can apply to overcome those pressures. Above all else, as it turns out, we must still love the pursuit of knowledge for its own sake – and this love directly impacts our results. 相似文献
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广西热带稀有濒危植物迁地保护地域探讨 总被引:2,自引:0,他引:2
对广西热带稀有濒危植物在广西及邻近省份植物园的引种保育进行对比研究。结果表明:大部分树种在热带和南亚热带可以正常生长,通过适当的保护措施,部分树种在中亚热带的桂林可以保存。低温和霜冻是广西热带稀有濒危树种能否成功保存的主要限制因素,因此,在引种保存过程中要注意防寒和树种的选择,以提高迁地保护的有效性。 相似文献
3.
This paper deals with the question of whether Life Cycle Assessments (LCAs), with their focus on objective and quantitative
results, are the best way to support public policy processes. The public policy making process is characterized as a continuous
discoursive struggle. Criteria are defined to distinguish between good and bad public policy discourses to judge the effects
of LCA on the public policy process. Many policy scientists argue that methodologies that emphasize quantification and the
use of formal methods are not beneficial for sound public policy making. An empirical report of the role LCAs played in public
policy making processes on PVC and chlorine in the Netherlands is made to evaluate the contribution of LCAs to public policy
making processes and to identify the main limitations of the current LCA methodologies and practices. It appears that political
actors tend to use LCAs in a polarizing way. LCAs are easily misused due to their apparent objectivity, and the quantitative
and black box nature of their results. LCAs contain an implicit, normative frame that does not match the environmentalists’
perception on the kind of evidence needed on toxic effects of organochlorines, which reduced the open nature of the Dutch
PVC debate. It is recommended to develop a methodology for product evaluation that approaches the issue in a more open and
emergent way to prevent “premature closure” of the analysis. It is expected that a focus on the development of balanced, rich
arguments on facts and values in the study process will be more fruitful than the calculation of integral, quantitative indicators. 相似文献
4.
目的:研究以案例为中心教学法(CBL)联合以问题为中心教学法(PBL)的教学方法与传统的基于课堂的教学法(LBL)在临床医学五年制本科生创伤外科学教学中的应用效果。方法:随机选取我校临床医学五年制四年级的学员80人,随机分为CBL联合PBL教学组及LBL教学组各40人。在课程结束以后,采用记名试卷考核联合不记名问卷调查的方式,进行教学方法、教学模式、教学内容掌握程度评价。结果:实验组学员理论考核成绩优于对照组学员,有统计学差异。CBL联合PBL教学法支持率高于传统LBL教学法,并且在激发学员兴趣,提高学员学习兴趣,合作能力方面均优于对照组。结论:CBL联合PBL教学法可以在创伤外科学中实施,能取得较好的教学效果。 相似文献
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以问题为基础(Problem-based learning,PBL)的教学法和案例教学法都是近年来我国医学教育改革中经常采用的两种新型教学方法。但二者从教学论方面来看,在教学材料的选择上、教学目的上都存在着差别。病理生理学是沟通基础和临床各学科间的桥梁学科,将"以问题为基础"的教学模式与案例教学法有机地结合引入病理生理学教学,符合病理生理学的学科特点,能够有效提高教学质量,在教育观念上更易于被医学生所接受,因而适应对高素质医学人才培养的需要。 相似文献
7.
《Virologica Sinica》2014,(5)
正TYPES OF ARTICLES●FORMATS OF ARTICLES●HOW TO SUBMIT A MANUSCRIPT●PUBLICATION FEES●TYPES OF ARTICLES1.Research articles Research articles belong to the full length article type,and should include elements as follows:title,running title,and byline;correspondent footnote;abstract;introduction;materials and methods;results;discussion;acknowledgements;author contributions;references;figure legends and figures/tables.The article length should not exceed 6,000 words,and detailed requirements are in the 相似文献
8.
谈细胞生物学启发讨论式教学中的问题设置 总被引:2,自引:0,他引:2
启发讨论式教学是素质教育对各科教学的新要求。问题设置是启发讨论式教学中的关键环节。探讨了细胞生物学启发讨论式教学中问题设置的基本方式及其应注意的几个方面。 相似文献
9.
A questionnaire about working with dreams was given to 95 clients in ongoing psychotherapy. Results indicated that clients who discussed dreams in therapy (68%) had more positive attitudes toward dreams, higher dream recall, and more therapist encouragement for talking about dreams than clients who did not. Clients reported that therapists used more exploratory than insight or action dream-related activities. The outcome of the dream session was positively related to the therapists' encouragement of dream work and dream-related activities used. Clients who had not discussed dreams in therapy indicated that they had not because there was not enough time in sessions to work on dreams or it had never occurred to them to talk about their dreams in therapy. (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献
10.
Heavy metals contamination from anthropogenic sources in waterways of conserved mangrove ecosystem (Indian Sundarbans) poses serious health hazard to the economically marginalized ‘tiger prawn seed’ (TPS) collectors. Principal component analysis identifies Pb, Ni and Cd as anthropogenic pollutant in Indian Sundarbans. It is observed that Cu, Fe and Zn concentration increases in monsoon, whereas concentration of Cd and Pb decreases in comparison to pre-monsoon levels at all seven fishing villages. Economic status has been assessed using Wealth Rank Tool, which indicates 16–71% of population is in acute economic stress conditions and 5–70% of populations engaged in unsustainable TPS collection for their livelihood. Focus group discussion shows that collectors are exposed (exposure time (ET)) to contaminated water for 3–7 h/d, and lifetime exposure (exposure duration (ED)) varies from 5 to 20 yr. Using site-specific ET and ED results, cumulative hazard quotient (HQ) dermal is estimated to be higher in female than in male. HQ varies from medium (≥1 to <4) to high (>4) due to Cd pollution (0.1–0.26 mg L-1). The study suggests that promoting alternative sustainable livelihood through group-based organizations (poultry, organic farming, entrepreneurship and transport) could be an effective solution to this problem. 相似文献