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Ewakuacja i jej aspekty w ujęciu teoretycznym

Głogowska P., Zdrojewska P., Wagner H.

Zeszyty Naukowe Ruchu Studenckiego

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2016

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Nr 1

65--76

PL

Występujące na świecie zagrożenia mają negatywny wpływ na codzienne życie oraz poczucie bezpieczeństwa przez obywateli, a także mogą stanowić również niebezpieczeństwo dla państw, uniemożliwiając im normalne funkcjonowanie. Mając na uwadze powyższe, umiejętność przeprowadzenia prawidłowej ewakuacji staje się ważną sprawnością dla obywatela. Jest ona również jednym z zadań służb bezpieczeństwa, których priorytetem jest ratowanie życia i zdrowia własnego oraz innych ludzi.

EN

Occurring worldwide threats can have negative influence on everyday life and sense of safety of the people, they can also be dangerous for safety of a whole country precluding its normal functioning. It is also one of the tasks of security forces which priority is to save life and health of people in case of any kind of threat. Due to all the above, it is highly significant that every citizen should have the competence to execute evacuation well.

2

Measurement of the Indentation Modulus and the Local Internal Friction in Amorphous SiO2 Using Atomic Force Acoustic Microscopy

Zhang B., Wagner H., Büchsenschütz-Göbeler M., Luo Y., Küchemann S., Arnold W., Samwer K.

Archives of Metallurgy and Materials

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2016

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Vol. 61, iss. 1

9--12

EN

For the past two decades, atomic force acoustic microscopy (AFAM), an advanced scanning probe microscopy technique, has played a promising role in materials characterization with a good lateral resolution at micro/nano dimensions. AFAM is based on inducing out-of-plane vibrations in the specimen, which are generated by an ultrasonic transducer. The vibrations are sensed by the AFM cantilever when its tip is in contact with the material under test. From the cantilver’s contactresonance spectra, one determines the real and the imaginary part of the contact stiffness k*, and then from these two quantities the local indentation modulus M' and the local damping factor Qloc-1 can be obtained with a spatial resolution of less than 10 nm. Here, we present measured data of M' and of Qloc-1 for the insulating amorphous material, a-SiO2. The amorphous SiO2 layer was prepared on a crystalline Si wafer by means of thermal oxidation. There is a spatial distribution of the indentation modulus M' and of the internal friction Qloc-1. This is a consequence of the potential energy landscape for amorphous materials.

3

On generalized Weber and Clebsch transformations

Wagner H.

Archives of Mechanics

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1998

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Vol. 50, nr 3

645-655

EN

Suitable generalizations of the Weber and Clebsch transformations of the hydrodynamic equations are interduced which have some bearing in the treatment of the inverse problem of Lagrangian field theory. In particular these generalizations open the way to equivalence proofs for several Lagrangians proposed in the realm of ideal (magento-)hydrodynamics. This means that the Euler-Lagrange equations corresponding to these Lagrangians do not only imply but are also implied by the original field equations of the systems under study.