TY - BOOK A1 - Maercker, Gisela T1 - Statistical inference in conditional heteroskedastic autoregressive models Y1 - 1997 SN - 3-8265-2486-1 N1 - Berichte aus der Mathematik ; Zugl.: Braunschweig, Techn. Univ., Diss., 1996 PB - Shaker CY - Aachen ER - TY - JOUR A1 - Reisgen, Uwe A1 - Schleser, Markus A1 - Mokrov, Oleg A1 - Ahmed, Essam T1 - Statistical modeling of laser welding of DP/TRIP steel sheets JF - Optics and laser technology N2 - In this research work, a statistical analysis of the CO2 laser beam welding of dual phase (DP600)/transformation induced plasticity (TRIP700) steel sheets was done using response surface methodology. The analysis considered the effect of laser power (2–2.2 kW), welding speed (40–50 mm/s) and focus position (−1 to 0 mm) on the heat input, the weld bead geometry, uniaxial tensile strength, formability limited dome height and welding operation cost. The experimental design was based on Box–Behnken design using linear and quadratic polynomial equations for predicting the mathematical models. The results indicate that the proposed models predict the responses adequately within the limits of welding parameters being used and the welding speed is the most significant parameter during the welding process. Y1 - 2012 U6 - https://doi.org/10.1016/j.optlastec.2011.05.025 SN - 1879-2545 (E-Journal); 0030-3992 (Print); 0308-4280 (Print) VL - 44 IS - 1 SP - 92 EP - 101 PB - Elsevier CY - Amsterdam ER - TY - JOUR A1 - Hartung, Frank A1 - Girod, Bernd T1 - Statistical optimization of switched two-level quantizers with application to DPCM encoding of color video / Hartung, Frank ; Girod, Bernd JF - IEEE International Conference on Acoustics, Speech, and Signal Processing, 1996. ICASSP-96. Conference Proceedings., 1996 Y1 - 1996 SN - 0-7803-3192-3 SP - 1974 EP - 1977 ER - TY - JOUR A1 - Heinrich, U. A1 - Blum, A. A1 - Bussmann, N. A1 - Engels, R. A1 - Kemmerling, G. A1 - Weber, S. A1 - Ziemons, Karl T1 - Statistical studies on the light output and energy resolution of small LSO single crystals with different surface treatments combined with various reflector materials JF - Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment N2 - The optimization of light output and energy resolution of scintillators is of special interest for the development of high resolution and high sensitivity PET. The aim of this work is to obtain statistically reliable results concerning optimal surface treatment of scintillation crystals and the selection of reflector material. For this purpose, raw, mechanically polished and etched LSO crystals (size 2×2×10 mm3) were combined with various reflector materials (Teflon tape, Teflon matrix, BaSO4) and exposed to a 22Na source. In order to ensure the statistical reliability of the results, groups of 10 LSO crystals each were measured for all combinations of surface treatment and reflector material. Using no reflector material the light output increased up to 551±35% by mechanical polishing the surface compared to 100±5% for raw crystals. Etching the surface increased the light output to 441±29%. The untreated crystals had an energy resolution of 24.6±4.0%. By mechanical polishing the surface it was possible to achieve an energy resolution of 13.2±0.8%, by etching of 14.8±0.7%. In combination with BaSO4 as reflector material the maximum increase of light output has been established to 932±57% for mechanically polished and 895±61% for etched crystals. The combination with BaSO4 also caused the best improvement of the energy resolution up to 11.6±0.2% for mechanically polished and 12.2±0.3% for etched crystals. Relating to the light output there was no significant statistical difference between the two surface treatments in combination with BaSO4. In contrast to this, the statistical results of the energy resolution have shown the combination of mechanical polishing and BaSO4 as the optimum. Y1 - 2002 SN - 0168-9002 N1 - Proceedings of the 6th International Conference on Inorganic Scin tillators and their Use in Scientific and Industrial Applications VL - 486 IS - 1-2 SP - 60 EP - 66 ER - TY - JOUR A1 - Weigand, Christoph T1 - Statistical Tests Based on Reliability and Precision JF - Economic Quality Control : EQC ; international journal for quality and reliability N2 - The construction of a statistical test is investigated which is based only on “reliability” and “precision” as quality criteria. The reliability of a statistical test is quantifiedin a straightforward way by the probability that the decision of the test is correct. However, the quantification of the precision of a statistical test is not at all evident. Thereforethe paper presents and discusses several approaches. Moreover the distinction of “nullhypothesis” and “alternative hypothesis” is not necessary any longer. Y1 - 2012 U6 - https://doi.org/10.1515/eqc-2012-0002 SN - 1869-6147 VL - 27 IS - 1 SP - 43 EP - 64 PB - De Gruyter CY - Berlin ER - TY - RPRT A1 - Conan, Yulian A1 - D'Haeyer, R. A1 - Béguin, P. A1 - Döring, Bernd A1 - Kuhnhenne, Markus A1 - Bayo, E. T1 - Steel in low-rise building : a symbiosis of cold formed sections and light rolled profiles : final report. Contract-No. 7215-PP/070. EUR 22080 en Y1 - 2006 SN - 92-79-02082-X PB - Office for Official Publications of the European Communities CY - Luxembourg ER - TY - JOUR A1 - Döring, Bernd A1 - Reger, Vitali A1 - Kuhnhenne, Markus A1 - Feldmann, Markus A1 - Kesti, Jyrki A1 - Lawson, Mark A1 - Botti, Andrea T1 - Steel solutions for enabling zero-energy buildings JF - Steel Construction - Design and Research Y1 - 2015 U6 - https://doi.org/10.1002/stco.201510029 SN - 1867-0539 N1 - The 13th Nordic Steel Construction Conference, Tampere, 2015 (NSCC-2015) VL - 8 IS - 3 SP - 194 EP - 200 PB - Ernst & Sohn CY - Berlin ER - TY - BOOK A1 - Artmann, Gerhard T1 - Stem cell engineering : principles and applications / Gerhard M. Artmann ... eds. Y1 - 2011 SN - 978-3-642-11864-7 PB - Springer CY - Berlin [u.a.] ER - TY - CHAP A1 - Chanson, Hubert A1 - Bung, Daniel Bernhard A1 - Matos, J. T1 - Stepped spillways and cascades T2 - Energy dissipation in hydraulic structures / Hubert Chanson (ed.) Y1 - 2015 SN - 978-1-138-02755-8 (print) ; 978-1-315-68029-3 (e-Book) SP - 45 EP - 64 PB - CRC Press CY - Boca Raton, Fla. [u.a.] ER - TY - BOOK A1 - Kaminsky, Radoslav A1 - Kallweit, Stephan A1 - Weber, Hans-Joachim A1 - Simons, Antoine A1 - Verdonck, Pascal T1 - Stereo high speed PIV measurements behind two different artificial heart valves Y1 - 2006 N1 - International Symposium on Applications of Laser Techniques to Fluid Mechanics <13, 2006, Lisboa> ER - TY - JOUR A1 - Selmer, Thorsten A1 - Scott, Richard A1 - Näser, Ulrike A1 - Friedrich, Peter T1 - Stereochemistry of hydrogen removal from the 'unactivated' C-3 position of 4-hydroxybutyryl-CoA catalysed by 4-hydroxybutyryl-CoA dehydratase / Scott, R. ; Näser, U. ; Friedrich, P. ; Selmer, T. ; Buckel, W. ; Golding, BT. JF - Chemical Communications : ChemCom (2004) Y1 - 2004 SN - 1364-548X SP - 1210 EP - 1211 ER - TY - JOUR A1 - Selmer, Thorsten A1 - Darley, Dan J. A1 - Clegg, William A1 - Harrington, Ross W. T1 - Stereocontrolled Synthesis of (2R,3S)-2-Methylisocitrate, a Central Intermediate in the Methylcitrate Cycle / Darley, Dan J. ; Selmer, Thorsten ; Clegg, William ; Harrington, Ross W. ; Buckel, Wolfgang ; Golding, Bernardt JF - Helvetica chimica acta. 86 (2003), H. 12 Y1 - 2003 SN - 1522-2675 SP - 3991 EP - 3999 ER - TY - JOUR A1 - Mang, Thomas A1 - Kricheldorf, Hans R. T1 - Stereospecificity of peptide synthesis by means of phosphorus derivatives: a model of peptide synthesis in molecular evolution / Kricheldorf, Hans R. ; Mang, Thomas JF - International Journal of Biological Macromolecules. 5 (1983), H. 5 Y1 - 1983 SN - 0141-8130 SP - 258 EP - 266 ER - TY - CHAP A1 - Gligorevic, Snjezana T1 - Stochastic modeling of non-stationary channels T2 - 7th European Conference on Antennas and Propagation (EuCAP) : 8 - 12 April 2013, Gothenburg, Sweden Y1 - 2013 SN - 978-1-4673-2187-7 ; 978-88-907018-1-8 SP - 1677 EP - 1681 PB - IEEE CY - Piscataway, NJ ER - TY - CHAP A1 - Meskouris, Konstantin A1 - Butenweg, Christoph A1 - Hinzen, Klaus-G. A1 - Höffer, Rüdiger T1 - Stochasticity of Wind Processes and Spectral Analysis of Structural Gust Response T2 - Structural Dynamics with Applications in Earthquake and Wind Engineering N2 - Wind loads have great impact on many engineering structures. Wind storms often cause irreparable damage to the buildings which are exposed to it. Along with the earthquakes, wind represents one of the most common environmental load on structures and is relevant for limit state design. Modern wind codes indicate calculation procedures allowing engineers to deal with structural systems, which are susceptible to conduct wind-excited oscillations. In the codes approximate formulas for wind buffeting are specified which relate the dynamic problem to rather abstract parameter functions. The complete theory behind is not visible in order to simplify the applicability of the procedures. This chapter derives the underlying basic relations of the spectral method for wind buffeting and explains the main important applications of it in order to elucidate part of the theoretical background of computations after the new codes. The stochasticity of the wind processes is addressed, and the analysis of analytical as well as measurement based power spectra is outlined. Short MATLAB codes are added to the Appendix 3 which carry out the computation of a single sided auto-spectrum from a statistically stationary, discrete stochastic process. Two examples are presented. KW - Wind turbulence KW - Gust wind response KW - Spectral analysis Y1 - 2019 SN - 978-3-662-57550-5 (Online) SN - 978-3-662-57548-2 (Print) U6 - https://doi.org/10.1007/978-3-662-57550-5_3 SP - 153 EP - 196 PB - Springer CY - Berlin ER - TY - CHAP A1 - Staat, Manfred A1 - Tran, Ngoc Trinh T1 - Strain based brittle failure criteria for rocks T2 - Proceedings of (NACOME2022) The 11th National Conference on Mechanics, Vol. 1. Solid Mechanics, Rock Mechanics, Artificial Intelligence, Teaching and Training N2 - When confining pressure is low or absent, extensional fractures are typical, with fractures occurring on unloaded planes in rock. These “paradox” fractures can be explained by a phenomenological extension strain failure criterion. In the past, a simple empirical criterion for fracture initiation in brittle rock has been developed. But this criterion makes unrealistic strength predictions in biaxial compression and tension. A new extension strain criterion overcomes this limitation by adding a weighted principal shear component. The weight is chosen, such that the enriched extension strain criterion represents the same failure surface as the Mohr–Coulomb (MC) criterion. Thus, the MC criterion has been derived as an extension strain criterion predicting failure modes, which are unexpected in the understanding of the failure of cohesive-frictional materials. In progressive damage of rock, the most likely fracture direction is orthogonal to the maximum extension strain. The enriched extension strain criterion is proposed as a threshold surface for crack initiation CI and crack damage CD and as a failure surface at peak P. Examples show that the enriched extension strain criterion predicts much lower volumes of damaged rock mass compared to the simple extension strain criterion. KW - Extension fracture KW - Extension strain criterion KW - Mohr–Coulomb criterion KW - Evolution of damage Y1 - 2023 SN - 978-604-357-084-7 N1 - 11th National Conference on Mechanics (NACOME 2022), December 2-3, 2022, VNU University of Engineering and Technology, Hanoi, Vietnam SP - 500 EP - 509 PB - Nha xuat ban Khoa hoc tu nhien va Cong nghe (Verlag Naturwissenschaft und Technik) CY - Hanoi ER - TY - JOUR A1 - Förster, Arnold A1 - Ohler, C. A1 - Moers, J. T1 - Strain dependence of the valence-band offset in arsenide compound heterojunctions determined by photoelectron spectroscopy / C. Ohler ; J. Moers ; A. Förster ... JF - Journal of Vacuum Science & Technology B: Microelectronics and Nanometer Structures. 13 (1993), H. 4 Y1 - 1993 SN - 1071-1023 N1 - ISSN der E-Ausg.: 0734-211X SP - 1728 EP - 1735 ER - TY - JOUR A1 - Förster, Arnold A1 - Ohler, C. A1 - Kohleick, R. T1 - Strain dependence of the valence-band offset in InAs/GaAs heterojunctions determined by ultraviolet photoelectron spectroscopy / C. Ohler ; R. Kohleick ; A. Förster ... JF - Physical Review B . 50 (1994), H. 11 Y1 - 1994 SN - 0163-1829 N1 - 2. ISSN: 1098-0121 ; ISSN der E-Ausg.: 1095-3795 SP - 7833 EP - 7837 ER - TY - JOUR A1 - Förster, Arnold A1 - Rosenauer, A. A1 - Remmele, T. T1 - Strain determination in mismatched semiconductor heterostructures by the digital analysis of lattice images / A. Rosenauer ; T. Remmele ; U. Fischer ; A. Förster ... JF - Microscopy of semiconducting materials 1997 : proceedings of the Royal Microscopical Society Conference held at Oxford University, 7 - 10 April 1997 / ed. by A. G. Cullis ... - (Conference series / Institute of Physics ; 157) Y1 - 1997 SN - 0-7503-0464-2 N1 - MSM <10, 1997, Oxford> ; Conference on Microscopy of Semiconducting Materials <10, 1997, Oxford> ; Institut of Physics SP - 39 EP - ff. PB - Institute of Physics CY - Bristol [u.a.] ER - TY - JOUR A1 - Förster, Arnold A1 - Lentzen, M. A1 - Gerthsen, D. T1 - Strain relaxation of lattice-mismatched In0.2Ga0.8As/GaAs superlattices on GaAs(001) substrates / M. Lentzen ; D. Gerthsen ; A. Förster ... JF - Microscopy of semiconducting materials 1995 : proceedings of the Institute of Physics Conference held at Oxford University, 20 - 23 March 1995 / Ed. by A G Cullis ... - (Conference series / Institute of Physics ; 146) Y1 - 1995 SN - 0-7503-0347-6 N1 - MSM <9, 1995, Oxford> ; Institut of Physics SP - 357 EP - ff. PB - Institute of Physics CY - Bristol [u.a.] ER -