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Instantaneous Temporal Parts and Time Travel
김세화,Takeshi Sakon 한국논리학회 2017 論理硏究 Vol.20 No.1
The standard definition of an instantaneous temporal part cannot properly deal with cases involving time travel. This paper provides a new definition of an instantaneous temporal part by appealing to David Lewis's distinction between external time and personal time. The new definition avoids the problems because it does not allow more than one instantaneous temporal part of an object at each moment of its personal time. We argue that this new definition, combined with our new perdurantist semantic thesis, deals with cases of time travel successfully.
Nagashima, Kazuki,Yanagida, Takeshi,Oka, Keisuke,Kanai, Masaki,Klamchuen, Annop,Rahong, Sakon,Meng, Gang,Horprathum, Mati,Xu, Bo,Zhuge, Fuwei,He, Yong,Park, Bae Ho,Kawai, Tomoji American Chemical Society 2012 NANO LETTERS Vol.12 No.11
<P>This study demonstrates the effect of surroundings on a memristive switching at nanoscale by utilizing an open top planar-type device. NiO<SUB><I>x</I></SUB> and CoO<SUB><I>x</I></SUB> planar-type devices have exhibited a memristive behavior under atmospheric pressure, whereas TiO<SUB>2-<I>x</I></SUB> planar-type devices did not show a memristive switching even under the same surroundings. A memristive behavior of TiO<SUB>2-<I>x</I></SUB> planar-type devices has emerged when reducing an ambient pressure and/or employing a SiO<SUB>2</SUB> passivation layer. These results reveal that a thermodynamical interaction with surroundings critically determines the occurrence of memristive switching via varying a stability of nonstoichiometry. Since this effect tends to be more significant for smaller devices with larger specific surface area, tailoring the surrounding effect by an appropriate passivation will be essential for high density devices.</P><P><B>Graphic Abstract</B> <IMG SRC='http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/nalefd/2012/nalefd.2012.12.issue-11/nl302880a/production/images/medium/nl-2012-02880a_0006.gif'></P><P><A href='http://pubs.acs.org/doi/suppl/10.1021/nl302880a'>ACS Electronic Supporting Info</A></P>
김세화 ( Seahwa Kim ),타케시사콘 ( Takeshi Sakon ) 한국논리학회 2017 論理硏究 Vol.20 No.1
The standard definition of an instantaneous temporal part cannot properly deal with cases involving time travel. This paper provides a new definition of an instantaneous temporal part by appealing to David Lewis`s distinction between external time and personal time. The new definition avoids the problems because it does not allow more than one instantaneous temporal part of an object at each moment of its personal time. We argue that this new definition, combined with our new perdurantist semantic thesis, deals with cases of time travel successfully.