24,689 research outputs found
Unternehmungsorganisation als Kernkompetenz: Auswirkungen auf organisatorische Strukturen, Prozesse und Gestaltende
No full textJack Alive / Martin Dead : The Location of the "Author" in Jack London\u27s Martin Eden
No full textThis essay is an attempt to read Martin Eden, Jack Londonʼs autobiographical novel, in terms of the inextricable relationship between the author and the protagonist. Critics have often taken the unbalanced plot and the lack of ironic distance between narrator and character in Martin Eden as the technical weakness of London, but this paper argues that the achievement of this novel owes a great deal to the attachment of London to Martin. The unbalanced structure is a necessary product of the severe struggle of the author to kill his romantic alter ego. // Martin, who aspires to win Ruth Morse, tries to cross class boundaries by making a career of a writer. Even after realizing the emptiness of Ruth, who turns out to be nothing but a typical figure of the bourgeoisie, he somehow persists in loving her. The notion underlying here is that, for Martin, love, career and art are fundamentally inseparable. He objects to the aestheteʼs view of Brissenden on account of his separation of art from career. Martinʼs identity and life consist only in the triunity of love/career/art; the alternative is the repudiation of life. Thus, the unnatural delay of his disappointment in love can be regarded as Londonʼs strategy to set the suicide of Martin as the necessary consequence of the story. // By finishing the story and killing Martin, London finally detaches himself from Martin, reconstructs his self, and, unlike Martin, survives as a professional writer. In this sense, Martin Eden is a story about “writerʼs self-reconstruction.
Hot electron dynamics and two-dimensional Fano resonance
No full textMittels der Kombination aus ultraschneller Laseranregung und energie-, winkel-
und zeitaufgelöster Zweiphotonen-Photoemission (2PPE) werden in dieser Arbeit
die elektronischen Eigenschaften von Silizium, insbesondere der
Silizium(001)-Oberfläche, untersucht. Ein eigens dafür aufgebautes Laser- und
Ultrahochvakuumsystem mit bildgebendem 2D-CCD-Detektor vermittelt dabei neue
Einblicke in die Relaxation angeregter Ladungsträger auf der
Femtosekundenzeitskala. Die Bandlücke zwischen besetzten Valenz- und
unbesetzten Leitungsbändern beeinflusst die Dynamik angeregter Elektronen
sowohl im Volumen als auch in den Zuständen und Resonanzen vor der Oberfläche
charakteristisch. So führt beispielsweise die Elektron-Phonon-Wechselwirkung
zur Ausbildung eines Flaschenhalses bei der Relaxation heißer Elektronen im
Leitungsband. Dies spiegelt sich in einer erhöhten elektronischen Temperatur
wider, die über Pikosekunden bestehen bleibt. Aus dem Leitungsband streuen
Elektronen während der Relaxation in den unbesetzten dangling bond-
Oberflächenzustand Ddown. In Abhängigkeit von der Anregungsdichte dominieren
Elektron-Elektron- oder Elektron-Phonon-Streuprozesse diese
Oberflächenrekombination. Die Relaxation der Ladungsträger im Ddown-Zustand
wird wiederum durch die Ausbildung eines Flaschenhalses in der Elektron-
Phonon-Kopplung verlangsamt. Die Verwendung des neuen Lasersystems ermöglicht
weiterhin den Nachweis der Rydberg-artigen Serie von Bildpotenzialresonanzen
vor der Si(001)-Oberfläche. Es wird gezeigt, dass die Lebensdauer der
Bildpotenzialresonanzen vor dieser halbleitenden Oberfläche den gleichen
Gesetzmäßigkeiten folgt wie vor metallischen Oberflächen. Zusätzlich wird die
Elektron-Phonon-Kopplung in der ersten Bildpotenzialresonanz untersucht und
mit dem Ddown-Oberflächenzustand verglichen. Erstmals werden Fano-artige
Linienprofile in einem 2PPE-Prozess an Oberflächen nachgewiesen und
analysiert. Wird die Photonenenergie des anregenden Laserpulses über die
Resonanz zwischen dem besetzten dangling bond-Zustand Dup und der unbesetzten
Bildpotenzialresonanz n = 1 variiert, zeigen sich deutliche
Intensitätsänderungen, die erfolgreich mit Hilfe einer analytischen
Erweiterung des herkömmlichen Fano-Effektes beschrieben werden können. Dieses
Interferenzphänomen des sogenannten zweidimensionalen Fano-Effektes beruht
dabei auf der gleichzeitigen Entartung des Anfangs- und des Zwischenzustandes
mit Kontinuumszuständen. Die Einführung einer Kopplung in die Optischen Bloch-
Gleichungen erlaubt des Weiteren eine numerische Bestimmung der
Kopplungsstärken zwischen den diskreten Oberflächenzuständen beziehungsweise
Bildpotenzialresonanzen und Volumenzuständen. Mit der Interpretation der
Kopplung als Zerfallskanal wird so die Lebensdauer eines einzelnen Photolochs
im dangling bond-Zustand Dup und eines Elektrons in der ersten
Bildpotenzialresonanz n = 1 in dem inhomogen verbreiterten System der
Si(001)-Oberfläche zugänglich.By combining ultrafast laser excitation with energy-, angle- and time-resolved
two-photon photoemission (2PPE), the electronic properties of bulk silicon and
the Si(001) surface are investigated in this thesis. A custom-built laser- and
UHV-systemequipped with a display type 2D-CCD-detector gives new insight into
the relaxation dynamics of excited carriers on a femtosecond timescale. The
bandgap between occupied valence bands and unoccupied conduction bands
characteristically influences the dynamics of excited electrons in the bulk,
as well as in surface states and resonances. For the electron-phonon
interaction this leads to the formation of a bottleneck during the relaxation
of hot electrons in the conduction band, which maintains the elevated
electronic temperature for several picoseconds. During relaxation, excited
electrons also scatter from the conduction band into the unoccupied dangling-
bond surface state Ddown. Depending on the excitation density this surface
recombination is dominated by electron-electron- or electron-phonon
scattering. The relaxation of the carriers in the Ddown-band is again slowed
down by the formation of a bottleneck in electron-phonon coupling.
Furthermore, the new laser system has allowed detection of the Rydberg-like
series of image-potential resonances on the Si(001)-surface. It is shown that
the lifetime of these image-potential resonances in front of the
semiconducting surface exhibits the same behavior as those in front of
metallic surfaces. Moreover the electron-phonon coupling in the first image-
potential resonance was investigated and compared to the Ddown-surface state.
For the first time, Fano-type lineprofiles are demonstrated and analyzed in a
2PPE-process on a surface. Tuning the photon energy of the pump-laser across
the resonance between the occupied dangling-bond state Dup, and the unoccupied
image-potential resonance n = 1, reveals a clear intensity variation that can
be successfully described using Fano’s theory, which we have extended
analytically to include a continuum coupled to the ground state. This
interference phenomenon of the so-called twodimensional Fano effect is based
on the simultaneous degeneracy of the inital and intermediate state with a
continuum. In addition, integration of off-diagonal coupling into the optical
Bloch equations allows us to deduce the coupling strengths between surface and
bulk states. Since the coupling can be interpreted as a decay channel, the
lifetime of a single photohole in the dangling-bond state Dup, and that of an
electron in the first image-potential resonance n = 1, is accessible in the
inhomogeneously broadened system of the Si(001) surface
Recommended from our members
Letter from Martin Chizzick
No full textCongratulations to Duane Pearsall for receiving the Enterpreneur of the Year award; note on the letter was written by Pearsall and it mentions that Martin, the author of the letter, died in a airplane accident
Robert Martin Tiffin's Mystery Man Newspaper Articles
No full textAdvertiser-Tribune newspaper clippings featuring a story about Robert Martin (written by Nancy Kleinhenz), a local author from Tiffin (Ohio) who wrote under the pseudonym of Lee Roberts, and two of his short stories. Martin wrote mystery novels in his spare time, creating more than 22 mystery novels. For more information about Robert Martin and a list of books go to http://www.mysteryfile.com/RMartin/JBennett.html
Dynamic Traffic Models in Transportation Science (Dagstuhl Seminar 22192)
No full textTraffic assignment models are crucial for transport planners to be able to predict the congestion, environmental and social impacts of transport policies, for example in the light of possible changes to the infrastructure, to the transport services offered, or to the prices charged to travellers. The motivation for this series of seminars - of which this seminar was the third - is the prevalence in the transportation community of basing such predictions on complex computer-based simulations that are capable of resolving many elements of a real systems, while on the other hand, the theory of dynamic traffic assignments (in terms of equilibrium existence, computability and efficiency) had not matured to the point matching the model complexity inherent in simulations.
Progress has been made on this issue in the first two seminars (Dagstuhl Seminar 15412 and 18102), by bringing together leading scientists in the areas of traffic simulation, algorithmic game theory and dynamic traffic assignment. We continued this process this seminar. Moreover, we started to address the growing real-life challenge of new kinds of 'mobility service' emerging, before the tools are available to incorporate them in such planning models. These services include intelligent/dynamic ride-sharing and car-sharing, through to fully autonomous vehicles, provided potentially by a variety of competing operators
Experiences Using Large Scale Video Walls for Distance Education
No full textWe describe our experiences building and using the Rutgers Videowall, a low-cost telepresence system that has been used teaching 15 courses and colloquia. By relaxing typical spatial telepresence features, such as background continuity, we greatly reduced costs and gained flexibility in the rooms it could be deployed in. The lower costs and room flexibility enabled academic departments to use the wall, in contrast to traditional telepresence systems which remained inaccessible. We found that the Videowall’s spatial distortions did not have a significant impact on useability, as our initial survey results show that students had an overall positive experience.Technical report DCS-tr-72
Hans Martin Schwarz Collection 1934 - 1938
No full textThis collection contains clippings of articles by Hans Martin Schwarz (1917, Hamburg – 2006, New York, better known as Martin Ebon), published between 1934 and 1938 in German-Jewish newspapers on a wide variety of subjects such as sports, emigration, the political situation in Germany, and religious attitudes of the young. It also contains reviews of his books "Einer wie Du und Ich" and "Heiteres, Besinnliches, Nachdenkliches."digitizedHans Martin Schwarz (1917, Hamburg – 2006, New York, better known as Martin Ebon), was a journalist and author. In Germany during the 1930s, he published in a variety of German-Jewish periodicals, primarily the Israelitisches Familienblatt. After immigrating to the United States in 1938, he changed his name to Martin Ebon, and published dozens of books in the areas of world affairs and parapsychology.Processe
Interview with Father James Martin
No full textIn May 2011, the Ignatian Faculty Scholars at Regis University conducted a Skype interview with Father James Martin, S. J., author of The Jesuit Guide to Almost Everything. The Scholars had used Father Martin’s book as a text for their year of study, which focused on Ignatian Spirituality, the Ignatian Pedagogical Paradigm, and teaching and learning at a Jesuit university. The interview was transcribed and is printed below. Father Martin reflects on the book, and responds to questions about the book itself, about finding God in all learners, and about the Church
Nehmen Sie Platz! Architekturen des Sitzens (17/4)
No full text“Es ist schwerer, einen guten Stuhl zu bauen als einen Wolkenkratzer.” Mit diesen Worten wird der große Mies van der Rohe im Einführungsbeitrag dieses Themenhefts zitiert. Und Recht hat er. Den klar funktionalen, charmant überdrehten und visionär anspruchsvollen Lösungen des Problems widmet mR daher das Herbstheft “Nehmen Sie Platz! Architekturen des Sitzens” (Redaktion: Julius Reinsberg). Mit von der Partie sind der Kunstgeschichtler Hajo Eickhoff, der Kulturwissenschaftler Matthias Marschik, der Architekt und Bauhistoriker Dietrich Worbs, der Kunsthistoriker Martin Bredenbeck, der Architekturkritiker Wolfgang Voigt sowie ausgewählte S-Bahnsitze.
Die Rechte für die einzelnen Textbeiträge liegen bei den Autor:innen, die Bildrechte sind jeweils am Bild selbst angegeben. Die einzelnen Heftbeiträge sind (in der jeweils aktuellen Form) online zugänglich.ISSN (online): 2365-0370, HBZ-ID: HT018260134, ZDB-ID: 105098818
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