Ventilatory response during an incremental exercise test: A mode of testing effect     

《European Journal of Sport Science》2013,13(6):491-498

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信息技术外包关系的治理：创新意图的影响研究          下载免费PDF全文

梅姝娥  谢刚 《科研管理》2013,34(8):130-138

为了研究不同创新意图的IT外包企业如何运用合约治理和关系机制来管理与服务商的关系,基于交易成本经济观和关系交换理论,构建了创新意图对两种治理机制与服务质量之间的关系的影响,以及创新意图对资产专用性与治理机制之间关系的影响的研究模型。220家企业的实证研究结果表明服务方资产专用性会促使企业加强合约治理和关系机制,外包方资产专用性会促使企业加强关系机制。随着服务方资产专用性的增加,创新导向的企业和非创新导向的企业都会增强关系机制,但创新导向企业在增强关系机制的同时,会比非创新导向企业更加侧重于加强合约治理。创新导向的企业与非创新导向的企业相比,关系机制对提高服务质量发挥着相对更为重要的作用,而合约治理在两类企业中发挥着同样重要的作用。  相似文献   

归纳推理是自然选择塑造的领域特殊性适应机制     

蒋柯  熊哲宏 《华东师范大学学报(教育科学版)》2010,28(3):54-60

当前进化心理学理论范式的困难是缺乏认知领域的实验证据,而归纳推理研究则面临解释匮乏的困难。文章指出,通过进化心理学理论范式来解析归纳推理的心理机制可以解决两者的困难。进化心理学的功能分析的研究方法和领域特殊性的观点为归纳推理的解释提供了新的出路,归纳推理的实证研究则可以在认知领域为进化心理学提供实验支持。通过分析,文章提出,归纳推理是进化而来的领域特殊性适应机制。  相似文献   

Diagnostic accuracy of heart fatty acid binding protein (H-FABP) and glycogen phosphorylase isoenzyme BB (GPBB) in diagnosis of acute myocardial infarction in patients with acute coronary syndrome     

Cubranic Z  Madzar Z  Matijevic S  Dvornik S  Fisic E  Tomulic V  Kunisek J  Laskarin G  Kardum I  Zaputovic L 《Biochemia medica : ?asopis Hrvatskoga dru?tva medicinskih biokemi?ara / HDMB》2012,22(2):225-236

Introduction:

This study aimed to assess whether heart fatty acid-binding protein (H-FABP) and glycogen phosphorylase isoenzyme BB (GPBB) could be used for the accurate diagnosis of acute myocardial infarction (AMI) in acute coronary syndrome (ACS) patients.

Materials and methods:

The study included 108 ACS patients admitted to a coronary unit within 3 h after chest pain onset. AMI was distinguished from unstable angina (UA) using a classical cardiac troponin I (cTnI) assay. H-FABP and GPBB were measured by ELISA on admission (0 h) and at 3, 6, 12, and 24 h after admission; their accuracy to diagnose AMI was assessed using statistical methods.

Results:

From 92 patients with ACS; 71 had AMI. H-FABP and GPBB had higher peak value after 3 h from admission than cTnI (P = 0.001). Both markers normalized at 24 h. The area under the receiver operating characteristic curves was significantly greater for both markers in AMI patients than in UA patients at all time points tested, including admission (P < 0.001). At admission, the H-FABP (37%) and GPBB (40%) sensitivities were relatively low. They increased at 3 and 6 h after admission for both markers and decreased again after 24 h. It was 40% for H-FABP and approximately 2-times lower for GPBB (P < 0.01). In AMI patients, both biomarkers had similar specificities, positive- and negative-predictive values, positive and negative likelihood ratios, and risk ratios for AIM.

Conclusion:

H-FABP and GPBB can contribute to early AMI diagnosis and can distinguish AMI from UA.  相似文献   

鼻蛭寄生特异性的比较分析     

王德斌全向荣  杨黎江沈放  伍向弘路斌 郭庆 《昆明师范高等专科学校学报》2005,27(4):54-55,60

通过对云南省鼻蛭（Dinobdella ferox）分布概况的调查和标本采集，初步探明鼻蛭在昆明、楚雄、红河、思茅、西双版纳地区均有分布．实验室内用鼻蛭幼体分别对家兔、大白鼠、家鸽、牛蛙进行感染实验，结果表明：鸟类、两栖类不是鼻蛭的寄主，即使人为地进行感染，鼻蛭也不能正常生长；鼻蛭仅以哺乳动物为寄主，寄生于寄主鼻、咽腔内的鼻蛭生长迅速且呈递增趋势，在感染一个月内，蛭体重增加可达200余倍．鼻蛭的寄生会对其寄主造成严重危害，应加强对鼻蛭危害的重视，并对其分布、生活史及防治开展综合研究．  相似文献   

How domain specific is motivation and engagement across school,sport, and music? A substantive–methodological synergy assessing young sportspeople and musicians     

Andrew J. Martin   《Contemporary educational psychology》2008,33(4):785-813

The primary purpose of this study was to examine the domain specificity (or otherwise) of motivation and engagement across academic, sport, and music domains using a survey-based methodology with parallel forms of the Motivation and Engagement Scale. The secondary purpose of the study was a methodological one seeking to test the most appropriate analytical means of assessing domain specificity. The sample comprised 329 young sportspeople (62% of total sample; 53% male; mean age 14 years) and classical musicians (38% of total sample; 40% male; mean age 14 years) in which target academic, sporting, and music domains are salient. Confirmatory factor analysis (CFA) led to the conclusion of modest domain specificity in motivation and engagement. This conclusion was based on fit indices for competing models, the size of parallel between-domain correlations, the proportion of shared variance between parallel domains, the number of within-domain correlations that were higher than parallel between-domain correlations, the decline in model fit when parallel correlations were constrained to be equal, and differences between parallel means. Notwithstanding this, constructs that were more trait-like evinced relatively less specificity. In terms of the secondary, methodological purpose, the study found that CFAs that correlated parallel uniquenesses resolved biased parameters found in raw scale score correlations that did not correct for unreliability and CFAs that did not correlate parallel uniquenesses. Together, findings hold implications for more targeted intervention, guidance for appropriate analysis in parallel domains using parallel measures, and more differentiated approaches to measurement.  相似文献   

社会主义发展的历史进程与前途命运     

王小梅  唐洲雁 《安庆师范学院学报(社会科学版)》2001,20(1):66-69

从马克思到邓小平 ,科学社会主义经历了 15 0多年的发展 ,这是一个理论思维不断深化和发展的过程 ,也是一个客观实践不断深化和发展的过程。走进新的世纪 ,只要我们继续高举邓小平理论的伟大旗帜 ,坚持走有中国特色社会主义的道路 ,我们的国家就大有希望 ,社会主义的事业就大有前途  相似文献   

Beliefs About Knowledge and Knowing: Integrating Domain Specificity and Domain Generality: A Response to Muis, Bendixen, and Haerle (2006)   总被引：1，自引：0，他引：1  

Barbara K. Hofer 《Educational Psychology Review》2006,18(1):67-76

In their review of the empirical research, Muis, Bendixen, and Haerle (2006) bring closure to the debate between domain specificity and domain generality of epistemic beliefs and provide a framework for future research. In response to their review, this article comments on issues that remain for those who wish to examine the nature of the interaction between epistemic domain specificity and domain generality and its relation to learning. These issues include methodological concerns, philosophical contributions, terminology, epistemology beyond academic domains, and educational implications.  相似文献   

The prevalence,development and domain specificity of elementary school students’ achievement goal profiles     

Joost Jansen in de Wal  Lisette Hornstra  Frans J. Prins  Thea Peetsma  Ineke van der Veen 《教育心理学》2016,36(7):1303-1322

This study’s aim was to examine the prevalence, development and domain specificity of fifth- and sixth-grade elementary school students’ achievement goal profiles. Achievement goals were measured for language and mathematics among 722 pupils at three points in time. These data were analysed through latent profile analysis and latent transition analysis. Results indicated that three similar goal profiles could be discerned at all measurement waves for both language and mathematics. Profiles were labelled ‘multiple goals’, ‘approach oriented’ and ‘moderate/indifferent’. In both mathematics and language, around 80% of the participants remained stable in their goal profiles across measurements. Students who transitioned between goal profiles mostly moved from less to more favourable profiles. Profile membership and transitions between profiles were found to be relatively domain general with 60% overlap between domains. The high level of stability over time and across domains suggests that students’ goal profiles represent relatively stable personal dispositions.  相似文献   

Evaluating the effectiveness of content-oriented XML retrieval methods   总被引：1，自引：0，他引：1  

Norbert Gövert  Norbert Fuhr  Mounia Lalmas  Gabriella Kazai 《Information Retrieval》2006,9(6):699-722

Content-oriented XML retrieval approaches aim at a more focused retrieval strategy: Instead of retrieving whole documents, document components that are exhaustive to the information need while at the same time being as specific as possible should be retrieved. In this article, we show that the evaluation methods developed for standard retrieval must be modified in order to deal with the structure of XML documents. More precisely, the size and overlap of document components must be taken into account. For this purpose, we propose a new effectiveness metric based on the definition of a concept space defined upon the notions of exhaustiveness and specificity of a search result. We compare the results of this new metric by the results obtained with the official metric used in INEX, the evaluation initiative for content-oriented XML retrieval.

Gabriella KazaiEmail:

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