Lärche und Lebensart Heuer, Antje; Stenzel, Dirk
Zeitschrift für Herz-, Thorax- und Gefässchirurgie,
06/2022, Letnik:
36, Številka:
3
Journal Article
Mit einem fünfgeschossigen Wohn- und Geschäftsgebäude zeigt Architekt Dirk Stenzel vom Atelier für strategische und nachhaltige Architektur – ASUNA – eindrucksvoll die Möglichkeiten zeitgenössischen ...Holzbaus. Das neue Gebäude entstand auf einem Grundstück, das zuvor lange Zeit unbebaut war. An markanter Stelle im Stadtraum markiert es eine spitzwinklige Quartiersecke im Leipziger Stadtteil Lindenau. Vier Bewohnerparteien und ein großes Fachgeschäft finden hier Raum zum Leben und Arbeiten.Der Architekt holt einen Roh- und Werkstoff neu ins Blickfeld. Das Material Holz ist leicht und hoch belastbar, wächst in großen Mengen nach, ist leicht zu verarbeiten und mit geringem Energieverbrauch umzuwandeln. Wetterunabhängig vorgefertigte Elemente ermöglichen optimierte Bauprozesse. Oberhalb der Bodenplatte entstand das Haus in nur fünf Wochen. Holz schafft ein gutes Raumklima und Lebensgefühl. Darüber hinaus kann es sogar noch verwendet werden, wenn das Haus eines Tages abgetragen wird. Das Haus kann als ökologisches Vorbild betrachtet werden, denn ein Kubikmeter Holz bindet eine Tonne Kohlendioxid. Im Neubau insgesamt sind 520 m3 verbaut. Außenwand, Decken und Dach bestehen aus Brettsperrholzelementen; Stützen und Riegel sind aus Brettschichtholz gefertigt.Das Haus ist vielfach preisgekrönt, gewann u. a. 2019 den Sächsischen Staatspreis für Baukultur und den Holzbaupreis Sachsen. Es wirkt als Statement, nicht als Dogma. Es zeigt eine architektonische Lösung, eine Haltung und eine Art zu leben. Das Werk demonstriert nicht nur die Zukunftstauglichkeit des Materials, es zeugt v. a. von freiem Geist und Experimentierfreude. Es plädiert für eigenständiges Nachdenken – über die zeitgemäße Nutzung eines Materials, über das Bauen, über das Leben.
The authors of this article present one of the pedagogical experiences, the kitá Pardés Alef, that take place every Sunday in the Majón Albert Einstein, at the Patronato of the Cuban Jewish Community ...and in the Sephardic Hebrew Center. Keywords: Education, jewish education, teaching-learning process, formation of values. Al no pertenecer a un sistema formal de enseñanza, consideramos el límite mayor de nuestra actividad el propio ser humano, su deseo de conocer, pertenecer, hacer, ser; desafíos constantes. En el 2do, 5776 (2015-2016), la historia y la identidad del pueblo judío tuvieron primacía; en el 3ero, 5777 (2016-2017), se hizo énfasis en las creencias, la liturgia y las fiestas y conmemoraciones; en el 4to, 5778 (2017-2018), la historia moderna y contemporánea de nuestro pueblo estuvo en el centro de las clases; y en el 5to, 5779 (2018-2019), la identidad y los valores judíos, como el de la responsabilidad, fueron el motor impulsor.
Einstein's Juryis the dramatic story of how astronomers in Germany, England, and America competed to test Einstein's developing theory of relativity. Weaving a rich narrative based on extensive ...archival research, Jeffrey Crelinsten shows how these early scientific debates shaped cultural attitudes we hold today.
The book examines Einstein's theory of general relativity through the eyes of astronomers, many of whom were not convinced of the legitimacy of Einstein's startling breakthrough. These were individuals with international reputations to uphold and benefactors and shareholders to please, yet few of them understood the new theory coming from the pen of Germany's up-and-coming theoretical physicist, Albert Einstein. Some tried to test his theory early in its development but got no results. Others--through toil and hardship, great expense, and perseverance--concluded that it was wrong.
A tale of international competition and intrigue,Einstein's Jurybrims with detail gleaned from Crelinsten's far-reaching inquiry into the history and development of relativity. Crelinsten concludes that the well-known British eclipse expedition of 1919 that made Einstein famous had less to do with the scientific acceptance of his theory than with his burgeoning public fame. It was not until the 1920s, when the center of gravity of astronomy and physics shifted from Europe to America, that the work of prestigious American observatories legitimized Einstein's work. As Crelinsten so expertly shows, the glow that now surrounds the famous scientist had its beginnings in these early debates among professional scientists working in the glare of the public spotlight.
In this paper the Dirac and Faddeev-Jackiw formulation for Einstein's theory in the limit is performed; the fundamental Dirac's and Faddeev-Jackiw brackets for the theory are obtained. First, the ...Dirac brackets are constructed by eliminating the second class constraints remaining the first class ones, then we fix the gauge and we convert the first class constraints into second class constraints and the new fundamental Dirac's brackets are computed. Alternatively, we reproduce all relevant Dirac's results by means of the symplectic method. We identify the Faddeev-Jackiw constraints and we prove that the Dirac and the Faddeev-Jackiw brackets coincide to each other. * A detailed Faddeev-Jackiw study of Einstein's theory in the limit is performed. * Einstein's theory in the limit is a reducible theory. * The Dirac and Faddeev-Jackiw brackets for a reducible theory are constructed. * We show that Dirac's brackets and generalized FJ brackets are equivalents. * Dirac's and Faddeev-Jackiw approaches are compared.
Photovoltaic technology has become a huge industry, based on the enormous applications for solar cells. In the 19th century, when photoelectric experiences started to be conducted, it would be ...unexpected that these optoelectronic devices would act as an essential energy source, fighting the ecological footprint brought by non-renewable sources, since the industrial revolution. Renewable energy, where photovoltaic technology has an important role, is present in 3 out of 17 United Nations 2030 goals. However, this path cannot be taken without industry and research innovation. This article aims to review and summarise all the meaningful milestones from photovoltaics history. Additionally, an extended review of the advantages and disadvantages among different technologies is done. Photovoltaics fundamentals are also presented from the photoelectric effect on a p-n junction to the electrical performance characterisation and modelling. Cells’ performance under unusual conditions are summarised, such as due to temperature variation or shading. Finally, some applications are presented and some project feasibility indicators are analysed. Thus, the review presented in this article aims to clarify to readers noteworthy milestones in photovoltaics history, summarise its fundamentals and remarkable applications to catch the attention of new researchers for this interesting field.
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