431 research outputs found
43-Why You Should Read Flannery O’Connor - Dr. David Schmitt and Dr. Joel Biermann
No full textFlannery O’Connor’s perspective as a devout Catholic writing in mid-century Georgia is observant and powerful. The theology intertwined into the narratives of her stories set her apart as an author. Dr. David Schmitt, professor of practical theology, and Dr. Joel Biermann, professor of systematic theology, discuss her influence and make a case for reading her work..
This podcast is also available at concordiatheology.org and all major podcast platforms
Word and Work Session 72
No full textIn Word and Work: An Intersection, Concordia Seminary, St. Louis, President Emeritus Dr. Dale A. Meyer tackles the subject of how we as Christians should interface with our secular culture and the government with Professor of Systematic Theology Dr. Joel Biermann. “God is at work in the world,” Biermann says. “Christians and the church need to help the government stay accountable and stay truthful. When we tell people, ‘in God we trust’ and ‘one nation under God,’ really that’s a reminder that you’re accountable to God for what you do. God is going to judge you someday. Are you doing things the way He wants you?” Biermann is the author of Wholly Citizens: God’s Two Realms and Christian Engagement with the World. In the audio version of the program, listen to a recent chapel sermon from Biermann. Learn more at Concordia Theology.https://scholar.csl.edu/wordandwork/1081/thumbnail.jp
A Novel 2D Micromilling FEM simulation strategy to optimize the flow stress law of IN625
No full textThe products miniaturization tendency of the last years led to an acceleration of micromilling process development. Considering the high-quality requirements, a deep knowledge of this operation, concerning ploughing-shearing transition, tool run-out, and tool edge radius effects, is mandatory, especially when machining difficult-to-cut materials. For this reason, this paper introduces a novel 2D micromachining Finite Element Method simulation strategy for micromilling forces evaluation, when cutting IN625. The major output of this technique consists in the computation of an optimized flow stress law, suitable for the simulation of high-speed machining. Particle Swarm Optimization method was employed for optimizing the flow stress parameters by comparing the cutting force predicted by an analytical model previously calibrated on experimental data, providing good agreement. This strategy permits the micromilling process predictive analysis, avoiding costly optimization experimental tests
MAGNETIC FIELD GENERATION BY BIERMANN BATTERY AND WEIBEL INSTABILITY IN LABORATORY SHOCK WAVES
No full textMagnetic field generation in the Universe is still an open problem. Possible mechanisms involve the Weibel instability, due to anisotropic phase-space distributions, as well as the Biermann battery, due to misaligned density and temperature gradients. These mechanisms can be reproduced in scaled laboratory experiments. In this contribution we estimate the relative importance of these two processes and explore the laser-energy requirements for producing Weibel dominated shocks. © The Author(s) 2013
Word and Work Session 02
No full textConcordia Seminary, St. Louis President Dr. Dale A. Meyer discusses the book, Wholly Citizens, with author Dr. Joel Biermann, the Seminary’s Waldemar A. and June Schuette Professor of Systematic Theology, as well as the relationship of church and world in light of Luther’s teachings. Word and Work: An Intersection provides a behind-the-scenes look at ministry where everyday life and God’s Word meet. Learn more at Concordia Theology. Learn more about Wholly Citizens from Fortress Press here Wholly Citizens.https://scholar.csl.edu/wordandwork/1001/thumbnail.jp
Hybridbearbeitung von SiC - Optimierung der spanenden Bearbeitung durch Ultraschallanregung
No full textUntersuchung des Standzeitverhaltens von Werkzeugen in der Zerspanung von SiCAnalysis of tool life behaviour of cutting tools in machining operations of Si
Kapitel: 1.6 Feinbearbeitung von Vermicularguss bei Einsatz eines additiv gefertigten Drehhalters für die Prozesskühlung mit CO2-Schnee
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