In recent years, governments in a large number of countries have introduced so-called deployment policies to foster the diffusion of clean energy technologies. While there is little doubt that these demand-side measures have been very effective in raising the share of clean electricity generation, currently, much less is known about how deployment policies affect—and are affected by—technological innovation beyond the mere diffusion of existing technologies. Against this backdrop, this dissertation abstract and commentary presents the dissertation work of Dr. Joern Hoppmann. (...) Based on a discussion of deployment policies as a means for addressing pressing societal issues, the dissertation abstract describes four essays that provide a detailed account of the role that these policies play for technological learning in the solar photovoltaic industry. The theoretical background, methods, and main findings of each of the essays are briefly summarized. Building on this, this abstract discusses implications for managers and policy makers in terms of how to improve the design of deployment policies and navigate businesses in policy-induced markets. (shrink)

The articles in this volume present an important selection of Jao Tsung-i's research in the field of the early Chinese intellectual tradition, especially as concerns the question of the conditio humana. Whether his focus is on myth, religion, philosophy or morals, Jao constantly aims at describing the Chinese version of a series of developments that are broadly associated with the Axial Age in the study of the ancient world in general. He is particularly interested in showing how early China had (...) developed its own notion of transcendence as well as a system of prediction and morals that allowed man to act on his own account, without having to rely on divine providence. (shrink)

In der vorliegenden Arbeit soll das komplexe Zusammenwirken von unbewusst Psychischem, biologischem Körper in der Pubertät und gesellschaftlichen Verschiebungen hin zu multiplen Genderidentitäten untersucht und differenziert werden. Ausgangspunkt ist eine Gruppe von Jugendlichen, die sich in der Spezialsprechstunde für Geschlechtsdysphorie des Universitätsklinikums Hamburg-Eppendorf vorstellen und als »Transgender« identifizieren; meist ist der Anlass der Vorstellung der Wunsch nach einer medizinischen Transition (Hormonbehandlung etc.). Der Autor versteht die frühe Adoleszenz als einen sozio-psychischen Umschlagsplatz, der per se einer psychischen und körperlichen, zumal hochgradig (...) konflikthaften Transition nahekommt. Plädiert wird für eine offene und oszillierende Haltung gegenüber den Jugendlichen – und dafür, sich Zeit zu nehmen, auch im Hinblick auf medizinische Schritte, die Teil unserer kulturellen und gesellschaftlichen Wirklichkeit geworden sind. (shrink)

In recent years, inverse spectra were investigated with imaging optics and a quantitative description with radiometric units was suggested. It could be shown that inverse spectra complement each other additively to a constant intensity level. Since optical intensity in radiometric units is a power area density, it can be expected that energy densities of inverse spectra also fulfill an inversion equation and complement each other. In this contribution we report findings on a measurement of the power area density of inverse (...) spectra for the near ultraviolet, visible and the infrared spectral range. They show the existence of corresponding spectral regions ultra-yellow and infra-cyan in the inverted spectrum and thereby present additional experimental evidence for equivalence of inverse spectra beyond the visible range. (shrink)

Two major developments of the last two decades have radically undermined traditional justifications of leftist politics: the failure of 20th-century `socialist' experiments, and what might be termed the deessentializing movement in contemporary philosophy. However, the social injustices that animated revolutionary thinkers in many respects remain, and some have arguably worsened in the era of globalized capitalism. This article investigates whether it is possible to articulate a new theoretical underpinning for progressive politics that nevertheless avoids the essentialist moves of Marxism. Ethico-political (...) readings of Derrida — one of the most influential anti-essentialist thinkers — are compared to Ernesto Laclau's attempts at formulating a post-Marxist progressive politics built around the notions of `hegemony' and `radical democracy'. Laclau's intervention in the Marxist tradition is to deconstruct its traditional categories so as to take account of contingency; his intervention in deconstruction is to introduce what in this article is described as `contestation', so as to provide a more coherent account of the political. The article concludes that neither deconstruction nor radical democracy provides an adequate basis for poltical action, but that the latter's account of the political is a meaningful development of the theoretical schema articulated by the former and does point to the possibility of a non-essentialist progressive politics. Key Words: aporia • contestation • contingency • deconstruction • Jacques Derrida • hegemony • justice • Ernesto Laclau • Emmanuel Levinas • responsibility. (shrink)

The polar orientation of cells within a tissue is an intensively studied research area in animal cells. The term planar polarity refers to the common polar arrangement of cells within the plane of an epithelium. In plants, the subcellular analysis of tissue polarity has been limited by the lack of appropriate markers. Recently, research on plant tissue polarity has come of age. Advances are based on studies of Arabidopsis patterning, cell polarity and auxin transport mutants employing the coordinated, polar localization (...) of auxin transporters and the planar polarity of root epidermal hairs as markers. These approaches have revealed auxin transport and response, vesicular trafficking, membrane sterol and cytoskeletal requirements of tissue polarity. This review summarizes recent progress in research on vascular tissue and planar epidermal polarity in the Arabidopsis root and compares it to findings on planar polarity in animals and cell polarity in yeast. BioEssays 26:719–729, 2004. © 2004 Wiley Periodicals, Inc. (shrink)

An effort of proponents of relativity theory to find evidence for the so-called gravitational red-shift of spectral lines as one of the experimental consequences of Einstein's generalized theory of relativity is reconsidered with reference to hitherto unpublished documents. It is shown how much interest Albert Einstein in fact took, around 1920, in the data analysis of Leonhard Grebe and Albert Bachem, who tried to explain why most earlier efforts to find the gravitational red-shift had failed. They carefully measured the (...) line profiles of the spectral lines both in the sun's Fraunhofer lines and in pressure-independent laboratory comparison spectra. Then they rejected all lines with strong neighbouring lines which could cause apparent shifts of the line centres; the remaining seven well-isolated lines showed the gravitational red-shift with acceptable accuracy. Nevertheless, their claim to have successfully isolated the relativistic effect never convinced the astrophysicists of their day—the reasons for the scientific community's scepticism, contrasted against the enthusiastic group of Einstein sympathizers, are also discussed. (shrink)

These comments on Sabine Grebe, "The Transformation of the Husband/Wife Relationship during Exile: Letters from Cicero and Ovid" raise questions about the similarities and dissimilarities of marriage and friendship examined in the marriages of Cicero and Ovid.

Die vorliegende Arbeit ist die umgearbeitete Fassung einer Disser tation, die im Sommersemester 1964 von der Philosophischen Fa kultiit der Universitat KOln angenommen wurde. In der Dissertation standen die beiden folgenden Problembereiche im Zentrum der Betrachtung: die Funktion des teleologischen Geschichtsdenkens flir die transzendentale Phanomenologie und Husserls Riickgang auf die vorwissenschaftliche Lebenswelt, so wie er sich aus der Epoche von den objektiven Wissenschaften ergibt. Diese Themen sind in die umfassenderen Zusammenhange dieser Untersuchung eingegangen. Ihre Aufgabe ist es, Husserls Spatwerk in (...) seiner Ein heitlichkeit und Geschlossenheit aus dem Blickpunkt des Riick ganges von der objektiven Wissenschaft auf die Lebenswelt in einer neuen Perspektive sichtbar werden zu lassen. Sie gibt von dieser Warte aus einen Durchblick durch Husserls Spatphilosophie. Ich mochte an dieser Stelle Herrn Professor Dr. Ludwig Land grebe flir seine Forderung meiner Bemiihungen urn die Endgestalt des Husserlschen Denkens danken. Gedankt sei auch dem Direktor des Husserl-Archivs zu Lowen, Herrn Professor Dr. Dr. h.c. H. L. Van Breda flir seine Unterstiitzung und die freundliche Erlaubnis, aus unveroffentlichten Manuskripten Husserls zitieren zu diirfen. (shrink)

Rarely does research in the history and philosophy of science lead to new empirical results, but that is exactly what has happened in one of the essays of this special issue: Rang and Grebe-Ellis have developed new experimental techniques to perform measurements Goethe proposed 217 years ago. These measurements fit neatly with Goethe’s idea of polarity—his complementary spectrum is not only an optical, but also a thermodynamical counterpart of Newton’s spectrum. I use the new measurements, firstly, to argue against (...) the asymmetries between light and darkness posited by Lyre and Schreiber; and, secondly, to explicate the alternative theory that Goethe had introduced to urge scientific pluralism. In my replies to exegetical criticism by Böhler, Hampe and Zemplén, I show that the main goal of Goethe’s Farbenlehre was indeed to expose symmetries between light and darkness. Furthermore, I argue that it is worthwhile to focus on the experiments, arguments and hypotheses of the Farbenlehre, and not merely on rhetorical, narrative or stylistical aspects, as Böhler and Hampe would have it. Goethe’s criticism of Newton is often dismissed, but it is in fact surprisingly relevant today. (shrink)