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Feller, J. F.,Lu, J.,Zhang, K.,Kumar, B.,Castro, M.,Gatt, N.,Choi, H. J. Royal Society of Chemistry 2011 Journal of materials chemistry Vol.21 No.12
<P>For the first time vapour sensors were made by assembling multi-wall carbon nanotube (CNT) decorated poly(methyl methacrylate) microbeads (PMMAµB) by spray layer by layer (sLbL). This combination of materials and technique resulted in an original hierarchical architecture with a segregated network of CNT bridging PMMAµB. The chemo-resistive behaviour of these conductive polymer nanocomposite (CPC) sensors was studied in terms of sensitivity and selectivity towards standard volatile organic compounds (VOC), as well as quantitativity and reproducibility of responses <I>A</I><SUB>r</SUB> to methanol, water, toluene and chloroform. Results show that 3D sLbL assembly allows boosting CNT network sensitivity by a factor 2 and selectivity for methanol vapour by a factor of 5. Additionally CNT-PMMAµB sensors gave responses proportional to vapour molecules content that could easily be fitted by the Langmuir–Henry-clustering model. Such sensors are thus expected to be good candidates for implementation in electronic noses.</P> <P>Graphic Abstract</P><P>Vapour sensors with original hierarchical 3D conducting architecture from CNT decorated PMMAµ beads spraying layer by layer. <IMG SRC='http://pubs.rsc.org/services/images/RSCpubs.ePlatform.Service.FreeContent.ImageService.svc/ImageService/image/GA?id=c0jm03779f'> </P>
Language for Deep Learning: Cognitive Explorative Action Games for Teacher-Learner Interactions
( Sebastian Feller ) 서울대학교 인지과학연구소 2013 Journal of Cognitive Science Vol.14 No.4
This paper explores the design of what I call explorative action games for teacher-learner interactions. I argue that explorative actions games scaffold the learner`s re-representation of knowledge in ways that facilitate higher-level thinking and deep reasoning. With reference to Weigand`s (2010) Theory of Dialogic Action Games, I introduce the minimal form of the game, which consists of the explorative and the discovery speech act pair. Both speech acts are mutually related to each other. The explorative action game thereby revolves around knowledge re-representations in terms of Chi and Ohlsson`s (2005) types of changes with special emphasis on “greater complexity”, “higher level of abstraction”, and “shifted vantage point”. I illustrate explorative action games for these types and show how they are linked to deep learning and dialogic knowledge building.
QUIET-SUN INTENSITY CONTRASTS IN THE NEAR-ULTRAVIOLET AS MEASURED FROM SUNRISE
Hirzberger, J.,Feller, A.,Riethmü,ller, T. L.,Schü,ssler, M.,Borrero, J. M.,Afram, N.,Unruh, Y. C.,Berdyugina, S. V.,Gandorfer, A.,Solanki, S. K.,Barthol, P.,Bonet, J. A.,Martí,nez Pille IOP Publishing 2010 ASTROPHYSICAL JOURNAL LETTERS - Vol.723 No.2
Akram M Eraky,Christina Feller,Hatem Tolba,Mokshal Porwal,Raphael H. Sacho,Hirad Hedayat 대한뇌혈관외과학회 2024 Journal of Cerebrovascular and Endovascular Neuros Vol.26 No.1
The Pipeline Embolization Device (PED) is a flow-diverting intraluminal device that is approved for use in adults 18 years or older with internal carotid artery aneurysms. However, it can also be used off-label in pediatric patients with aneurysms that cannot be resolved with traditional endovascular treatments. Herein, we present two cases of flow diversion in the pediatric population with complete obliteration of the aneurysm and excellent outcomes. Flow diversion has been shown to be a safe endovascular option in treating complex aneurysms in children. Larger-sized, multicenter trials are encouraged to compare outcomes between flow diversion and other aneurysm treatment options given the rarity of pediatric aneurysms.