Günther Rager – författare
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6 produkter
6 produkter
Del 63 - Advances in Anatomy, Embryology and Cell Biology
Development of the Retinotectal Projection in the Chicken
Häftad, Engelska, 1980
565 kr
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Wilhelm His, one of the founders of developmental neurobiology, was convinced "that the processes of generation and development obey fundamental and simple laws and submit to the general laws of nature" (His 1901). Therefore, we should be able to find immediate conditions, dependencies and rules determining the de velopment of an organic form. With this in mind, His (1874) defined the task of embryology as follows: "Developmental biology is essentially a physiological science; it has not only to describe how each individual form develops from the egg, it has to derive this development in such a way that each developmental stage together with all its specialities appears as a necessary consequence of the immediately pre ceding stage . . . Only if developmental biology has given a perfect physiological deriva tion for any given form, has it the right to say that it has explained this individual form. " The ultimate aim of a physiological derivation would be that laws of growth valid for organic ,beings can be expressed as mathematical formulae (His 1874). To exemplify this, he formulated a universal and purely formal law of growth in mathematical terms making the comment: "I now suggest that the body form follows immediately from germinal growth and can be derived from the given germinal form according to the laws of growth. My interest is, therefore, firstly to detect the law of growth empirically and secondly to derive consecutive forms of the developing or ganism by applying this law.
E-bok
PDF, Engelska, 2013708 kr
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Wilhelm His, one of the founders of developmental neurobiology, was convinced "that the processes of generation and development obey fundamental and simple laws and submit to the general laws of nature" (His 1901). Therefore, we should be able to find immediate conditions, dependencies and rules determining the de velopment of an organic form. With this in mind, His (1874) defined the task of embryology as follows: "Developmental biology is essentially a physiological science; it has not only to describe how each individual form develops from the egg, it has to derive this development in such a way that each developmental stage together with all its specialities appears as a necessary consequence of the immediately pre ceding stage . . . Only if developmental biology has given a perfect physiological deriva tion for any given form, has it the right to say that it has explained this individual form. " The ultimate aim of a physiological derivation would be that laws of growth valid for organic ,beings can be expressed as mathematical formulae (His 1874). To exemplify this, he formulated a universal and purely formal law of growth in mathematical terms making the comment: "I now suggest that the body form follows immediately from germinal growth and can be derived from the given germinal form according to the laws of growth. My interest is, therefore, firstly to detect the law of growth empirically and secondly to derive consecutive forms of the developing or ganism by applying this law.
E-bok
PDF, Tyska, 2013550 kr
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564 kr
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E-bok
Tyska, 2017167 kr
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Wie viel Vertrauensverlust können sich die Medien noch leisten? – Junge Journalisten zeigen Wege aus der GlaubwürdigkeitskriseVor allem seit Beginn der Pegida-Demonstrationen taucht immer wieder der Vorwurf der Lügenpresse an die etablierten Medien auf. Was ist der Kern dieses Vorwurfs? Wie ist es um die Qualität des Journalismus wirklich bestellt? Sind Journalisten von oben gesteuert? Michael Steinbrecher geht zusammen mit fu¨nfzehn jungen Journalisten der TU Dortmund diesen und weiteren Fragen nach. Sie liefern Fakten zum Verhältnis von Pluralität und Rudel-Journalismus, untersuchen die Berichterstattung zum Thema Rechtsradikalismus und zeigen Wege aus der Glaubwürdigkeitskrise.
E-bok
Tyska, 2018167 kr
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Wie Big Data unsere Gesellschaft verändertBig Data, die digitale Transformation, künstliche Intelligenz - wir wissen mittlerweile, dass sich unsere Gesellschaft rasant verändert. Welche Begriffe auch immer durch die Debatte geistern, deutlich wird: Neue Technologien schaffen auch neue Probleme, die wir bisher noch nicht mal ansatzweise verstanden haben. Social Bots manipulieren die Meinungsbildung. Fake News beeinflussen Wahlen und Abstimmungen. Filterblasen und Algorithmen definieren, welche Informationen uns das Internet bereitstellt. Wie weit geht diese Veränderung unserer Gesellschaft? Ist sie ein Angriff auf die Demokratie? Was will das Silicon Valley, von dem so viele Veränderungen ausgehen, wirklich? Erfährt der Journalismus eine Renaissance oder macht der Letzte das Licht aus?