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Selected AbstractsHand to sensor calibration: A geometrical interpretation of the matrix equation AX=XBJOURNAL OF FIELD ROBOTICS (FORMERLY JOURNAL OF ROBOTIC SYSTEMS), Issue 9 2005Irene Fassi In this paper, the matrix equation AX=XB used for hand to sensor calibration of robot-mounted sensors is analyzed using a geometrical approach. The analysis leads to an original way to describe the properties of the equation and to find all of its solutions. It will also be highlighted why, when multiple instances AiX=XBi (i=1,2,...) of the equation are to be solved simultaneously, the system is overconstrained. Finally, singular cases are also discussed. © 2005 Wiley Periodicals, Inc. [source] The Ecosystem: Model or Metaphor?JOURNAL OF INDUSTRIAL ECOLOGY, Issue 2 2010Epistemological Difficulties in Industrial Ecology Summary Industrial ecology offers an original way of looking at economic activities. The approach is based on an analogy between certain objects studied by the science of ecology (ecosystems, metabolisms, symbiosis, biocenosis, etc.) and industrial systems. However, this analogical relationship raises difficulties due to the various interpretations to which it is open. Although there is agreement regarding its heuristic function, the analogy can nevertheless be understood either as a model or as a metaphor. The present article first attempts to show how models differ from metaphors. It then sets out to justify the epistemological relevance of this distinction for industrial ecology research. The reflection should thus contribute to clarifying the debate on the (supposed or desired) role of analogy in the field of industrial ecology and heighten the interest this field of investigation represents for implementing sustainable development. [source] wombsoft: an r package that implements the Wombling method to identify genetic boundaryMOLECULAR ECOLOGY RESOURCES, Issue 4 2007A. CRIDA Abstract wombsoft is an r package that analyses individually georeferenced multilocus genotypes for the inferences of genetic boundaries between populations. It is based on the Wombling method that estimates the systemic function by looking for the local variation of the allele frequencies. This study presents an original way of estimating the systemic function, based on the local polynomial regression, and a binomial test to assess the significance of boundaries. The method applies to codominant or dominant markers and allows for missing data. The software r can be downloaded from http://www.r-project.org/ and wombsoft from http://www-leca.ujf-grenoble.fr/logiciels.htm or http://www.r-project.org/. [source] "Allegory of the theologians" or "allegory of the poets": Allegory in Dante's CommediaORBIS LITERARUM, Issue 5 2000Leonardo Cecchini To define the nature of the allegory in Dante's Commedia has always been one of the main objectives of Dante research. What is the immediately detectable difference between the allegory in the Commedia and that of the traditional allegorical-didactic poems? What kind of allegory did Dante have in mind when writing the Commedia? This article is my contribution to a possible solution of this problem. My assumption is that Dante wanted to give the Commedia a complex polysemous structure: a structure that, in a new and original way, unites the two traditional medieval forms of allegory, the poetical and the theological (according to Dante's own terminology in Convivio"allegory of the theologians" and "allegory of the poets"). The article is divided into four parts: first a synthetic presentation of the concept of allegory; an analysis of the most important passages where Dante treats the problem theoretically (this includes especially some passages from Convivio, and the much discussed Epistle XIII); a discussion of some of the most important positions within the Dante research; and finally a possible solution to the problem. [source] Radicalism in Civil War and Interregnum EnglandHISTORY COMPASS (ELECTRONIC), Issue 2 2010Philip Baker In recent decades, the subject of civil war and interregnum radicalism has provoked a vexed and tendentious scholarship within early modern English history. This article charts the subject's historiographical fortunes since the 1970s and addresses a series of crucial interpretive and definitional issues. In addition to providing an overview of the existing field, the article also suggests a new approach to mid-17th-century radicalism that encompasses a much broader spectrum of individuals, groups and ideas than those found in both Marxist and revisionist accounts. Drawing on this approach and the recent insights of other scholars, this article identifies a number of possible avenues for future research and suggests how the subject might be developed in original ways. [source] |