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Liliana Model Set 143 [PATCHED]



Professor Matzkin is really nice, and I found this class to be very interesting. However, it's probably one of the most difficult Econ classes, and you shouldn't take it unless you're interested in econometrics/data science. Linear algebra is used more often to describe solutions, so some proficiency with matrices is necessary. The homework isn't too bad, but the exams are pretty difficult. Fortunately, she gave a very generous curve. In terms of content, most of the class is spent looking at what happens when the basic assumptions of linear regression fail and how to fix them. We later also discussed logit models.




Liliana Model Set 143



Illustration of cellular metabolism-scaffold degradation model describing bone remodeling with fluxes representing expected pathways leading to the formation of new bone. (a) Model for rapidly degrading scaffold, and (b) model for slow degrading scaffolds. Solid arrows: metabolic flux. Dashed arrows: signal transduction. Colors: red and inhibition; green and activation. Reprinted with permission from [77], S.-H. Park, et al., Biomaterials 31, 6162 (2010). 2010, Elsevier.


Illustration showing the Wound chamber model in the tibia of New Zealand White rabbits using Ti and TiO2 scaffolds. Two defects of diameter 3 mm were made in the rabbit tibia (A) and the TiO2 scaffold (black arrow) was placed through the cortical defect and into the bone marrow and the sham defect left empty (B). SEM images of the TiO2 scaffold prior to implantation (C). Titanium coins which were placed on top of the defect to simulate a peri-implant situation. Teflon caps were placed on top of the coins to prevent bone growth on the side and a titanium band was placed to prevent the discs falling out (D). After healing, the band was carefully cut, and the Teflon caps were removed (E). The peri-implant bone attached to the extracted titanium discs was analyzed with real-time RT-PCR. The wound fluid was collected from the wound site with filter papers to test for cytotoxicity (F). The bone tissue was further analyzed with micro-CT and histology. The black arrow shows that the TiO2 scaffold promoted a complete healing of the cortical defect. Reprinted with permission from [191], H. J. Haugen, et al., Acta Biomaterialia 9, 5390 (2013). 2013, Elsevier. 350c69d7ab


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