New projects in particle physics     

Michel J. Crozon 《Endeavour》1979,3(2):69-77

Recent results in the field of particle physics raise many questions on the elementary constituents of matter and their interactions. These cannot be answered, nor the latest theoretical predictions verified, without accelerators operating at higher energies. Pending world-wide collaboration for the construction of a gigantic accelerator, individual nations are engaged in an increasingly competitive race to construct such machines. The author describes the main assemblies under construction or currently planned in Western Europe, the USA and the USSR, and discusses the technical, financial, political, and, by no means least, human problems involved.  相似文献   

Undisclosed Flexibility in Computing and Reporting Structural Equation Models in Communication Science     

Christopher Scott Seaman  Rene Weber 《Communication methods and measures》2015,9(4):208-232

The use of structural equation modeling (SEM) in communication research has become increasingly popular in recent years, with SEM being commonly used as the primary method of data analysis in studies published within the field’s journals. However, despite its widespread use, there are persistent misapplications of SEM in published empirical studies in the communication sciences. Of these types of misuse, the most troubling are those related to the exploitation of flexibilities in data collection and analysis. Given the number of decisions that must be made when analyzing and reporting structural equation models, decisions which often remain undisclosed, the potential for researchers to exploit flexibilities in SEM research is high. To assess the extent of this problem, as well as the more longstanding types of misuse (i.e., omission of information and disclosed “bad practice”) identified by prior studies, we undertake a methodical review of studies employing structural equation modeling within major journals in the field of communication between the years 2007 and 2011. Articles were coded on the characteristics of the sample, characteristics of the model tested, as well as for various potential problems that we defined a priori. The most serious issues are identified, and recommendations for future standards in SEM research are suggested.  相似文献   

The evolving reference desk: A case study     

Christopher Ross Bowron  Joseph E. Weber 《The Journal of Academic Librarianship》2019,45(5):102057

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Instructions and recipes in mathematical proofs     

Weber  Keith  Tanswell  Fenner Stanley 《Educational Studies in Mathematics》2022,111(1):73-87

Educational Studies in Mathematics - In mathematics education research, proofs are often conceptualized as sequences of mathematical assertions. We argue that this ignores proofs that contain...  相似文献   

The New Friends of Music: Democracy,Chamber Music and the Mass Audience     

Daniel B. Weber 《Journal of American culture (Malden, Mass. : 2003)》1983,6(4):44-48

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Letter from Chicago: Children's murals     

John Weber  Eva Cockcroft  Jim Cockcroft 《The Urban Review》1976,9(1):20-30

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The nature of naive explanations of natural selection     

Michel Ferrari  Michelene T. H. Chi 《International Journal of Science Education》2013,35(10):1231-1256

Unlike some pivotal ideas in the history of science, the basic notion of natural selection is remarkably simple and so one might expect most students to easily grasp the basic principles of the Darwinian theory; yet many students nevertheless have difficulty understanding Darwinian evolution. We suggest that misconceptions about natural selection arise from mistaken categorization. Our thesis for explaining students’ failure to understand this concept or evolution in general is not that they necessarily fail to understand individual Darwinian principles; rather, they often fail to understand the ontological features of equilibration processes, of which evolution is one instance. They thus attribute the evolutionary process in general, and natural selection in particular, with event‐like properties. For example, naive students appear to focus on the idea of survival of the fittest, but embed this idea within an event ontology that involves actors struggling to overcome obstacles and achieve goals. Results showed that most naive subjects’ evolutionary explanations reflected an event ontology. Furthermore, event ontology attributes were positively correlated with non‐Darwinian explanations; by contrast, equilibration attributes, when present, were positively correlated with key Darwinian principles. These findings suggest that students would greatly benefit from science instruction that emphasized the underlying ontology of modern evolutionary theory.  相似文献   

French beach sports culture in the twentieth century     

Michel Rainis 《国际体育史杂志》2013,30(1):144-158

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Presentation     

Michel Debeauvais 《Prospects》1985,15(2):189-193

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Why and how mathematicians read proofs: an exploratory study     

Keith Weber  Juan Pablo Mejia-Ramos 《Educational Studies in Mathematics》2011,76(3):329-344

In this paper, we report a study in which nine research mathematicians were interviewed with regard to the goals guiding their reading of published proofs and the type of reasoning they use to reach these goals. Using the data from this study as well as data from a separate study (Weber, Journal for Research in Mathematics Education 39:431–459, 2008) and the philosophical literature on mathematical proof, we identify three general strategies that mathematicians employ when reading proofs: appealing to the authority of other mathematicians who read the proof, line-by-line reading, and modular reading. We argue that non-deductive reasoning plays an important role in each of these three strategies.  相似文献