Stability and Instability of Solitary Wave Solutions of a Nonlinear Dispersive System of Benjamin-Bona-Mahony Type

2000 Mathematics Subject Classification: 35B35, 35B40, 35Q35, 76B25, 76E30.

Utopia, A Must: A Review Essay on Benjamin Kunkel’s Utopia or Bust

Utopia or Bust, more than many foundational alternatives, forcefully though with non-sectarian wisdom, re-implants the notion of utopia to the front-of-the-line of Left theory (whether economic, geographic, political, social, and/or cultural). Kunkel's introductory survey reminds us through Harvey, among others, that “Utopia exists and that other systems, other spaces, are still possible."

Como un milagro: The Musical Influence of Juanito Márquez on the Popular Song of Four Continents, Lecture by Benjamin Lapidus

This flyer promotes the event "Como un milagro: The Musical Influence of Juanito Márquez on the Popular Song of Four Continents, Lecture by Benjamin Lapidus" Cosponsored by the Latin American and Caribbean Center and the Green Library.

Como un milagro: The Musical Influence of Juanito Márquez on the Popular Song of Four Continents, Lecture by Benjamin Lapidus

Lecture by Dr. Benjamin Lapidus covering the career of Cuban guitarist, composer, and orchestrator Juanito Marquez Urbino.

Global compilation of benthic data sets I

Approaches to quantify the organic carbon accumulation on a global scale generally do not consider the small-scale variability of sedimentary and oceanographic boundary conditions along continental margins. In this study, we present a new approach to regionalize the total organic carbon (TOC) content in surface sediments (<5 cm sediment depth). It is based on a compilation of more than 5500 single measurements from various sources. Global TOC distribution was determined by the application of a combined qualitative and quantitative-geostatistical method. Overall, 33 benthic TOC-based provinces were defined and used to process the global distribution pattern of the TOC content in surface sediments in a 1°x1° grid resolution. Regional dependencies of data points within each single province are expressed by modeled semi-variograms. Measured and estimated TOC values show good correlation, emphasizing the reasonable applicability of the method. The accumulation of organic carbon in marine surface sediments is a key parameter in the control of mineralization processes and the material exchange between the sediment and the ocean water. Our approach will help to improve global budgets of nutrient and carbon cycles.

Dem edlen, unvergesslichen Johann Christian von Senckenberg Med. Doct. & Phys. Ord. welcher sich um Frankfurt und die leidende Menschheit und sein ganzes höchst ansehnliches Vermögen zur Gründung einer medicinischen Stiftung, und zu einem Bürger und Beisassen Hospital in seinem Testamente vom 18. August 1765 vermachte : er war gebohren am 28. Februar 1707 : ein unglücklicher Fall endigte am 15. November 1772 sein thatenreiches Leben : einem hohen Senate und löblicher Bürgerschaft der Freien Stadt Frankfurt ehrfurchtsvoll gewidmet von: Soldan Rohm

nach der Originalzeichnung von L. Müller ; entworfen und herausgegeben von: Soldan Rohm

Data compilation on the biological response to ocean acidification: environmental and experimental context of data sets and related literature

The exponential growth of studies on the biological response to ocean acidification over the last few decades has generated a large amount of data. To facilitate data comparison, a data compilation hosted at the data publisher PANGAEA was initiated in 2008 and is updated on a regular basis (doi:10.1594/PANGAEA.149999). By January 2015, a total of 581 data sets (over 4 000 000 data points) from 539 papers had been archived. Here we present the developments of this data compilation five years since its first description by Nisumaa et al. (2010). Most of study sites from which data archived are still in the Northern Hemisphere and the number of archived data from studies from the Southern Hemisphere and polar oceans are still relatively low. Data from 60 studies that investigated the response of a mix of organisms or natural communities were all added after 2010, indicating a welcomed shift from the study of individual organisms to communities and ecosystems. The initial imbalance of considerably more data archived on calcification and primary production than on other processes has improved. There is also a clear tendency towards more data archived from multifactorial studies after 2010. For easier and more effective access to ocean acidification data, the ocean acidification community is strongly encouraged to contribute to the data archiving effort, and help develop standard vocabularies describing the variables and define best practices for archiving ocean acidification data.

Metafísica do tempo presente: sobre o programa de Walter Benjamin a uma filosofia vindoura

Our thesis tracks down and explores a method of reading Walter Benjamin´s texts and examines his proposal to a "coming philosophy" by highlighting his higher concept of "experience" (Erfahrung) for the foundation of a metaphysics for the Now-Time. Accordingly, it starts first from the application of the method and analyzes what is to be rescued from the Kantian legacy, as indicated in Benjamin´s youth "Program for a coming Philosophy" (1917-1918). Then, to discuss and evaluate Benjamin´s project of a "coming philosophy" several youth´s texts are compared with later texts which propose a new concept of experience as both aesthetic and historical basis for a philosophy of "NowTime" (Jetztzeit). Finally, by analogy with Kant´s critical attitude against dogmatic metaphysics the challenge of metaphysics today is discussed, especially Benjamin´s proposal to "Now-Time-Metaphysics" within the context of crisis and bankruptcy of explanatory models of reality in philosophy.

Walter Benjamin. Teología y Nueva Ilustración

Fil: Naishtat, Francisco Samuel. Universidad Nacional de La Plata. Facultad de Humanidades y Ciencias de la Educación; Argentina.

Ensayo acerca del tiempo barroco en W. Benjamin

Nuestra exposición parte de la siguiente hipótesis: el barroco mantiene una relación particular con el tiempo que configura dimensiones de posibilidad y modos de producción específicos. Esta relación particular - que intentaremos asir a la manera de un "tiempo barroco"-, está marcada por los efectos del Racionalismo que, a la vez que deposita en el hombre la centralidad de su proyecto, también desplaza a los dioses de su cielo enfrentándolo a una fragilidad y una impotencia que no hacen sino confirmar la finitud que le es humana. El hombre, vuelto a un estado de criatura, pareciera no poder hacer con su tiempo más que la producción de una experiencia doliente. El hombre barroco llora su momento y dilata su tiempo presente con un sinfín de figuras como si quisiera de alguna manera nombrar, dibujar, el infinito que le falta. La producción alegórica recabada por Walter Benjamin en su Ursprung des deustchen Trauerspiels (1928), nos provee de pistas -la naturaleza, los cadáveres, las intrigas, los espectros, el Príncipe-, para esbozar la reconstrucción de este paisaje acechado por la desolación que trae consigo el racionalismo. En efecto, el tiempo se verá dislocado en la escena que la obra de Benjamin nos trae: la escatología ya no es más garantía de conocimiento de las cosas del mundo sino la fuerza propia de un momento de muerte que, al fin, produce un éxtasis último y redentor de todos los sufrimientos humanos. Las posibilidades para una producción cualitativa del tiempo, para la producción de otra experiencia, quedarán encerradas en esta suerte de espacio espiralado, donde las alegorías son los engranajes de un poder creativo capaz de producir una multiplicidad de desplazamientos simbólicos y reenvíos significantes ad infinitum aunque sin verdaderamente cambiar cosa alguna. Sin más, la catástrofe de las impotencias humanas deviene la fuerza y la visión del horizonte de nuestros posibles; una catástrofe ya incluida, que no puede dejar de tener lugar. Esta dilación de las posibilidades del 'cada vez' del tiempo presente, interpela, por la proximidad de sus desafíos, también nuestras dinámicas contemporáneas de aprovechamiento del tiempo