跑台运动与负重游泳致大鼠力竭性疲劳时心肌骨骼肌组织学变化特征观察   总被引：2，自引：0，他引：2  

黄明  丁同英  张晓玲  殷劲  高兴  苏全生 《成都体育学院学报》1996,(4)

】通过对大鼠跑台运动和负重游泳致力竭性疲劳时血乳酸的测定及对心肌、骨骼肌组织学损伤程度的观察，研究糖酵解供能条件下不同运动致力竭性疲劳时，心肌、骨骼肌组织学变化特征及致疲劳原因。结果表明，力竭性疲劳时，与游泳组相比，跑台组大鼠心肌和骨骼肌的组织学损伤相对较少，且血乳酸浓度也低于游泳组（Ｐ＜０．０１）。这提示，不同的运动方式对疲劳进程有不同的影响，并且在此运动模型中，血乳酸可能是引起疲劳性损伤的重要因素  相似文献   

Short Response to Tunis’s Letter to the Editor on Technology in College     

W.?Stephen?WilsonEmail author 《Educational Studies in Mathematics》2005,58(3):415-420

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Coming of Age? Overview of Career Guidance Policy and Practice in Australia     

Wendy?PattonEmail author 《International Journal for Educational and Vocational Guidance》2005,5(2):217-227

In recent years significant international focus has highlighted the critical importance of managing life, learning and work in a constantly changing labour market. This changing world and the corresponding need for individuals to engage in repeated decision-making about learning and work has raised the importance of and necessity for the provision of career development services across the lifespan. This challenge is being addressed by many countries across the globe. Within this context, this paper discusses the initiatives enhancing the status of career service provision in Australia.  相似文献   

Research Policy In Emerging Economies: Brazil’s Sector Funds     

Creso?SáEmail author 《Minerva》2005,43(3):245-263

This paper examines Brazil’s Sector Funds, an emerging research and development policy that seeks to increase public-private research collaboration. The first section sets the context of the ‘policy problem’. The second section discusses the policy’s implementation, and discusses its likely implications for Brazil and beyond.  相似文献   

Science on the Periphery. The spanish Reception of Nuclear Energy: an Attempt at Modernity?     

Albert?Presas?I?PuigEmail author 《Minerva》2005,43(2):197-218

During the Cold War, Franco’s dictatorship attempted to use technological transfer and nuclear technology to strengthen the geopolitical influence of his Government in Spain. This paper studies this process, with particular reference to the role played by German scientists as advisers to the Spanish nuclear project.  相似文献   

The Market for Picasso Prints: A Hybrid Model Approach     

Marilena?Locatelli?BieyEmail author  Roberto?Zanola 《Journal of Cultural Economics》2005,29(2):127-136

Two basic approaches have been used by the literature focusing on the return to holding artistic works: the hedonic price model and the repeat-sales model. This paper provides a procedure for jointly estimating the two models in a way that take advantages of the unique information contained in each. A semiannual price index for Picasso prints is estimated by using a model derived from the basic framework of the hybrid models. The empirical results suggest that the hybrid model provides the most precisely estimated price index by reducing the level of price volatility.JEL Classification: C5, Z1p  相似文献   

Mobile Agents for Distributed and Heterogeneous Information Retrieval   总被引：1，自引：0，他引：1  

Subrata?DasEmail author  Kurt?Shuster  Curt?Wu  Igor?Levit 《Information Retrieval》2005,8(3):383-416

The heterogeneous, distributed and voluminous nature of many government and corporate data sources impose severe constraints on meeting the diverse requirements of users who analyze the data. Additionally, communication bandwidth limitations, time constraints, and multiple data formats impose further restrictions on users of these distributed data sources. In this paper, we present an Agent-based Complex QUerying and Information Retrieval Engine (ACQUIRE) for large, heterogeneous, and distributed data sources. ACQUIRE acts as a softbot or interface agent by presenting users with a view of a single, unified, homogenous data source, against which users can pose high-level declarative queries. ACQUIRE translates each such user query into a set of sub-queries by employing a combination of planning and traditional database query optimization techniques. ACQUIRE then spawns a set of mobile agents corresponding to these sub-queries, which in turn retrieve the data from various distributed data sources by dynamically optimizing the retrieval strategy as it is carried out. These mobile agents carry with them data-processing code that can be executed at the remote site, thus reducing the size of data returned by the agent. When all mobile agents have returned, ACQUIRE filters and merges the retrieved data and presents the results to the user. While the system is still very much a work in progress, current validation experiments on simulated NASA Distributed Active Archive Centers (DAACs) have demonstrated that complex queries can be effectively decomposed and retrieved by this approach.  相似文献   

Introduction to the Special Issue on INEX     

Norbert?FuhrEmail author  Mounia?Lalmas 《Information Retrieval》2005,8(4):515-519

This special issue contains articles describing XML retrieval approaches developed and evaluated during the second year of INEX, the evaluation initiative for XML retrieval.  相似文献   

Create Once,Use Many Times: The Clever Use of Recordkeeping Metadata for Multiple Archival Purposes   总被引：1，自引：0，他引：1  

Joanne?Evans  Sue?McKemmishEmail author  Karuna?Bhoday 《Archival Science》2005,5(1):17-42

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Documenting Displacement: The Migration of Archival Sources From Post-WW II East European Émigré Groups     

Joel?WurlEmail author 《Archival Science》2005,5(1):79-92

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