Is what you see what you get? representations, metaphors and tools in mathematics didactics

This paper is exploratory in character. The aim is to investigate ways in which it is possible to use the theoretical concepts of representations, tools and metaphors to try to understand what learners of mathematics ‘see’ during classroom interactions (in their widest sense) and what they might get from such interactions. Through an analysis of a brief classroom episode, the suggestion is made that what learners see may not be the same as what they get. From each of several theoretical perspectives utilised in this paper, what learners ‘get’ appears to be something extra. According to our analysis, this something ‘extra’ is likely to depend on the form of technology being used and the representations and metaphors that are available to both teacher and learner

Mass transfer cooling on a porous flat plate in carbon-dioxide and air streams

Mass transfer cooling on porous flat plate in carbon dioxide and air stream

Coupling Impedances for Perforated Beam Pipes with General Shape from Impedance Boundary Condition

We introduce an equivalent wall impedance to describe the electromagnetic boundary conditions at perforated pipe walls. The new impedance boundary condition, together with our general formulae for computing longitudinal and transverse beam coupling impedances in complex heterogeneous pipes, provides a good trade-off between computational accuracy and ease

ICT SECTOR ECONOMIC INDICATORS USING IO TABLE ANALYSIS DURING BIG DATA ERA

The purpose of this research is to analyze the impact of Imvestment toward economic indicator components of particular sector, to show how strategic BPS IO Table part of structured Big Data. ICT Service Sector was selected as one of the most impacted sector by massive data growth during Big Data era using economic indicatorssuch as Import; Indirect Tax; Labor Absorption. The model proposed by this research was based on IO Table Matrix using Leontief Ground theory; The methodology of this research was by constructing propositions from Leontief Inverse formula. This research data used secondary IO Table Matrix 36x36 from BPS (Indonesia Central Statistic Board) IO Table 175x175 (2008) updated. In addtion, by performing Forward and Backward linkage analysis. This research was limited to ICT Service Sector (31) of IO Table 36x36 Matrixes for period of 2009-2013, updates from BPS IO Table (2008). Nowadays, Practical and Managerial Implication shows that Industry Stakeholders in ICT Sector can have sovereignty and independent economic indicators optained such as Import; Indirect Tax; and Labor Absorption made available from local BPS IO Table

The end of “Eskimo land”: Yupik relocation in Chukotka, 1958-1959

Fifty years ago, in summer 1958, Russian authorities started a program of massive relocation of the Yupik population on the Chukchi Peninsula, Siberia. About 800 people, or roughly 70% of the small nation of 1,100 at that time, were forced to leave their home sites and were moved to other communities. Some basic facts related to the Yupik relocations of the 1950s have been known since the 1960s; but no first-hand narratives of the displaced people were ever published. The paper overviews the closing of the three largest Siberian Yupik communities of Naukan, Ungaziq (Chaplino) and Plover in 1958-1959, and the displacement of their residents as recalled from their memories and personal accounts collected by the authors during the 1970s and 1980s. The paper argues that Soviet Yupik relocations of the 1950s were unprecedented in their scale and traumatic impact, even when compared to other state-initiated resettlement programs that targeted many Inuit communities in Alaska, Canada and Greenland.Il y a cinquante ans, pendant l’été 1958, les autorités russes ont entrepris un programme de relocalisation massive de la population yupik de la péninsule des Tchouktches en Sibérie. Quelques 800 personnes, ou environ 70% de cette petite nation de 1100 individus à l’époque, ont été forcées de quitter leur lieu de résidence et ont été transférées vers d’autres communautés. L’essentiel des faits relatifs à la relocalisation yupik est connu depuis les années 1960 mais aucun récit de première main n’a jamais été publié. Cet article présente une vue d’ensemble de la fermeture des trois plus grands villages yupik sibériens, Naukan, Ungaziq (Chaplino) et Plover en 1958-1959 ainsi que du déplacement de leurs résidents, à travers leurs souvenirs et leurs récits personnels que les auteurs ont recueillis durant les années 1970 et 1980. L’article soutient que ces relocalisations yupik par les autorités soviétiques dans les années 1950 ont été sans précédent en terme d’échelle et d’effet traumatisant, même si on les compare aux programmes de repeuplement initiés par d’autres États qui visaient de nombreuses communautés inuit en Alaska, au Canada et au Groenland

Vasilii Rozanov and the Creation

This thesis will examine the Creation of the world as the referential event in Vasilii Rozanov's religious thought. The first chapter explores Rozanov's rejection of Orthodoxy's formal doctrines, in favour of a philosophy based on man's physical ties with God. Rozanov's God is bisexual, whose creation of the cosmos is a sexual event. Man is linked to God not through Christ (a created being), but biologically, and by his bodily activity which repeats the Creation. Rozanov subverts the eschatology of Orthodoxy, replacing it with an attachment to the material world. The subsequent chapters examine the implications of Rozanov's thought for his Christianity, and specifically the manner in which he tries to make ancient values relevant in contemporary Russian society. The second chapter investigates Rozanov's studies of ancient Egypt. Rozanov tries to restore Egyptian religious practices, in particular their reverence for the Creation. The third chapter turns to Rozanov's writings on the Jews. He believes that the Jews have preserved the rituals they learned from the Egyptians, and therefore can provide a connection between the Russians and pre-Christian civilizations. The final chapter looks at the role played by art, specifically literature, in the restoration of pre-Christian values for Rozanov, arguing that his aesthetics are ethical and based on his interpretation of the Creation. Writing re-enacts the Creation. This thesis argues that Rozanov's thought emerges from the traditions of Russian philosophy, and also from traditional Russian Orthodoxy; in many ways he is a typical Russian thinker, as well as a devout Orthodox believer. Having assumed these traditions, he proceeds to define his thought in opposition to them. This thesis will also illuminate the broader tendencies in the development of Russian thought at this time, and the way Russian thinkers engaged with the established religious teachings of the Church