[admin] links to archive in Issue-5 are broken
[TF:RA] Rich annotation work (perhaps) taken up by OWLWG
A brief primer on Qnames and URIs
abbreviated IRIs - ISSUE-14 (was Re: owl minutes)
Action 14 clean up minutes
ACTION-28 completed
ACTION-29 is done
Agenda for TC 2007.11.14
Agenda for teleconference Wednesday November 21st, 2007
Agenda for teleconference Wednesday November 28th, 2007
Agenda for teleconference Wednesday November 7th, 2007
Agenda for teleconference Wednesday October 31, 2007
agenda for today's UFDTF
agenda for UFDTF
Agenda requests: Issues we can decide?
- Jim Hendler (Wednesday, 7 November)
- Bijan Parsia (Wednesday, 7 November)
- Peter F. Patel-Schneider (Wednesday, 7 November)
- Bijan Parsia (Wednesday, 7 November)
- Bijan Parsia (Tuesday, 6 November)
- Jim Hendler (Tuesday, 6 November)
- Jeremy Carroll (Tuesday, 6 November)
- Bijan Parsia (Tuesday, 6 November)
- Ian Horrocks (Tuesday, 6 November)
- Jeremy Carroll (Tuesday, 6 November)
- Bijan Parsia (Monday, 5 November)
- Ian Horrocks (Monday, 5 November)
- Bijan Parsia (Monday, 5 November)
All about imports
annotating axioms
Annotation test cases
Axiom prioritization
bug in tracker
Choosing a "short name" for our working group pubs
- Ivan Herman (Tuesday, 6 November)
- Alan Ruttenberg (Tuesday, 6 November)
- Jeremy Carroll (Monday, 5 November)
- Jim Hendler (Sunday, 4 November)
- Alan Ruttenberg (Saturday, 3 November)
- Bijan Parsia (Saturday, 3 November)
- Bijan Parsia (Saturday, 3 November)
- Ivan Herman (Saturday, 3 November)
- Alan Ruttenberg (Friday, 2 November)
- Jim Hendler (Friday, 2 November)
- Jeremy Carroll (Friday, 2 November)
- Alan Ruttenberg (Thursday, 1 November)
classes as instances
classes as instances (was Re: comments on RDF mapping)
comments on RDF mapping
- Peter F. Patel-Schneider (Friday, 2 November)
- Peter F. Patel-Schneider (Friday, 2 November)
- Ivan Herman (Friday, 2 November)
- Bijan Parsia (Friday, 2 November)
- Ivan Herman (Friday, 2 November)
- Bijan Parsia (Thursday, 1 November)
- Novacek, Vit (Thursday, 1 November)
- Alan Ruttenberg (Thursday, 1 November)
- Novacek, Vit (Thursday, 1 November)
comments on RIF BLD from OWL WG
CURIEs - ISSUE-14
- Jeremy Carroll (Tuesday, 27 November)
- Ivan Herman (Tuesday, 27 November)
- Ivan Herman (Tuesday, 27 November)
- Jeremy Carroll (Tuesday, 27 November)
- Ivan Herman (Tuesday, 27 November)
- Ivan Herman (Tuesday, 27 November)
- Michael Smith (Tuesday, 27 November)
- Ivan Herman (Tuesday, 27 November)
- Alan Ruttenberg (Monday, 26 November)
- Jeremy Carroll (Monday, 26 November)
- Alan Ruttenberg (Saturday, 24 November)
- Jeremy Carroll (Friday, 23 November)
- Jeremy Carroll (Thursday, 22 November)
Datatype Defaulting in OWL
Datatype support implementation matrix
Differences between rdfs:Datatype vs owl:DataRange
Discussion of anonymous individuals versus skolems
Documentation goals
Draft minutes 2007.11.14
draft minutes of UFDTF 7th Nov
Extending OWL DL vocabulary (was UFDTF Metamodeling Document)
F2F2 in Washington DC, early April 2008
facets, XSD, SCD, external datatypes (was Re: A brief primer on Qnames and URIs)
foaf/OWL
further issues from HP
Fwd: ISSUE-51 (Language Name): Name of the Poduct
informative vs normative docs etc....
Input to UFD scope/issues (Was: UFDTF from tech plenary session)
Introduction (other part)
Introductions (F2F Meeting)
ISSUE-11 (datatype facets): REPORTED: Specification of which facet is being restricted in a datatype restriction is missing
ISSUE-14 (CURIES): REPORTED: Proposal to base abbreviated URIs on CURIES not QNAMES
ISSUE-15 (ontology names): REPORTED: Ontologies should not be required to include a URI
ISSUE-2 (allDisjoint-RDF): No syntax for AllDisjoint in RDF mapping
- Jim Hendler (Tuesday, 13 November)
- Jim Hendler (Tuesday, 13 November)
- Boris Motik (Tuesday, 13 November)
- Jeremy Carroll (Monday, 12 November)
- Jim Hendler (Sunday, 11 November)
- Ian Horrocks (Sunday, 11 November)
- Boris Motik (Wednesday, 7 November)
- Uli Sattler (Wednesday, 7 November)
- Peter F. Patel-Schneider (Wednesday, 7 November)
- Boris Motik (Wednesday, 7 November)
ISSUE-28 (multiple facets): REPORTED: Multiple facet restrictions per data range
ISSUE-3: REPORTED: Lack of anonymous individuals
- Bijan Parsia (Wednesday, 28 November)
- Bijan Parsia (Wednesday, 28 November)
- Ivan Herman (Wednesday, 28 November)
- Bijan Parsia (Tuesday, 27 November)
- Boris Motik (Tuesday, 27 November)
- Jeremy Carroll (Tuesday, 27 November)
- Ivan Herman (Tuesday, 27 November)
- Alan Ruttenberg (Tuesday, 13 November)
- Boris Motik (Tuesday, 13 November)
- Alan Ruttenberg (Tuesday, 13 November)
- Alan Ruttenberg (Tuesday, 13 November)
- Boris Motik (Tuesday, 13 November)
- Ian Horrocks (Saturday, 10 November)
- Ivan Herman (Saturday, 10 November)
- Alan Ruttenberg (Saturday, 10 November)
- Jeremy Carroll (Friday, 9 November)
- Carsten Lutz (Friday, 9 November)
- Boris Motik (Friday, 9 November)
- Giorgos Stoilos (Friday, 9 November)
- Giorgos Stoilos (Friday, 9 November)
- Boris Motik (Friday, 9 November)
- Carsten Lutz (Friday, 9 November)
- Giorgos Stoilos (Friday, 9 November)
- Giorgos Stoilos (Friday, 9 November)
- Conrad Bock (Thursday, 8 November)
- Bijan Parsia (Thursday, 8 November)
- Carsten Lutz (Thursday, 8 November)
- Boris Motik (Thursday, 8 November)
- Conrad Bock (Thursday, 8 November)
- gstoil@image.ece.ntua.gr (Thursday, 8 November)
- Jim Hendler (Thursday, 8 November)
- Carsten Lutz (Thursday, 8 November)
- gstoil@image.ece.ntua.gr (Thursday, 8 November)
- Jim Hendler (Thursday, 8 November)
- Carsten Lutz (Thursday, 8 November)
- gstoil@image.ece.ntua.gr (Thursday, 8 November)
- Carsten Lutz (Thursday, 8 November)
- gstoil@image.ece.ntua.gr (Thursday, 8 November)
- Carsten Lutz (Thursday, 8 November)
- gstoil@image.ece.ntua.gr (Thursday, 8 November)
- Carsten Lutz (Thursday, 8 November)
- Boris Motik (Thursday, 8 November)
- gstoil@image.ece.ntua.gr (Thursday, 8 November)
- gstoil@image.ece.ntua.gr (Thursday, 8 November)
- Alan Ruttenberg (Thursday, 8 November)
- Uli Sattler (Thursday, 8 November)
- gstoil@image.ece.ntua.gr (Thursday, 8 November)
- Boris Motik (Wednesday, 7 November)
ISSUE-51 (Language Name): Name of the Poduct
ISSUE-52 (Explanations): Specification of OWL equivalences and rewriting rules for explaining inferences
- Kashyap, Vipul (Monday, 5 November)
- Peter F. Patel-Schneider (Monday, 5 November)
- Kashyap, Vipul (Monday, 5 November)
- Peter F. Patel-Schneider (Monday, 5 November)
- Kashyap, Vipul (Monday, 5 November)
- Kashyap, Vipul (Monday, 5 November)
- Bijan Parsia (Monday, 5 November)
- Rinke Hoekstra (Monday, 5 November)
- Kashyap, Vipul (Monday, 5 November)
- Kashyap, Vipul (Monday, 5 November)
- Kashyap, Vipul (Monday, 5 November)
- Deborah L. McGuinness (Monday, 5 November)
- Peter F. Patel-Schneider (Monday, 5 November)
- Kashyap, Vipul (Monday, 5 November)
- Bijan Parsia (Monday, 5 November)
- Rinke Hoekstra (Monday, 5 November)
- Peter F. Patel-Schneider (Monday, 5 November)
- Alan Ruttenberg (Monday, 5 November)
- Kashyap, Vipul (Sunday, 4 November)
- Kashyap, Vipul (Sunday, 4 November)
- Jim Hendler (Sunday, 4 November)
- Alan Ruttenberg (Sunday, 4 November)
- Kashyap, Vipul (Saturday, 3 November)
- Kashyap, Vipul (Friday, 2 November)
- Bijan Parsia (Friday, 2 November)
- Kashyap, Vipul (Friday, 2 November)
- Rinke Hoekstra (Friday, 2 November)
- OWL Working Group Issue Tracker (Friday, 2 November)
ISSUE-53 (Linear inequality between two data types): Need for arbitrary inequality conditions on two (or more) data types
ISSUE-54 (Entities as Triples): Translation to Triples missing for entities in RDF mapping
issue-55 (owl:class): owl:class v. [sic] rdfs:class
ISSUE-55 (owl:class): owl:class v. rdfs:class
ISSUE-56 (repairsomerdf): Specify standard "repairs" for moving select RDF documents to OWL?
ISSUE-57 (OWL 1.0 Errata): REPORTED: Folding in OWL 1.0 Errata
ISSUE-58 (OWL 1.0 Ref editorial): OWL 1.0 Ref editorial from webont comments
ISSUE-59 (OWL 1.0 Guide editorial): REPORTED: OWL 1.0 Guide editorial from webont comments
ISSUE-5: n-ary datatypes
ISSUE-5: n-ary datatypes - decidability on merging
ISSUE-5: n-ary datatypes - lots of choice, no guidance
ISSUE-5: n-ary datatypes - real vs XSD
ISSUE-5: n-ary datatypes - rounding errors
ISSUE-5: n-ary datatypes - unimplemented incomplete design
ISSUE-5: n-ary datatypes - use cases - preferred design
ISSUE-5: n-ary datatypes - use cases ISSUE-53
ISSUE-5: n-ary datatypes -decidability - datatype group?
ISSUE-5: REPORTED: Doubts about n-ary datatypes
ISSUE-60 (wine ): REPORTED: wine in OWL Guide is not culturally universal
ISSUE-61 (OWL 1.0 Overview editorial): REPORTED: OWL 1.0 Overview editorial from webont comments
ISSUE-62 (OWL 1.0 SAS comments): REPORTED: OWL 1.0 S&AS comments from webont
ISSUE-63 (full semantics): REPORTED: Defining an RDFS compatible semantics
ISSUE-64 (obj-prop-chain rep): REPORTED: object property chains in triples: confusion of list with property
ISSUE-65 (excess vocab): REPORTED: excessive duplication of vocabulary
- Bijan Parsia (Tuesday, 27 November)
- Ian Horrocks (Tuesday, 27 November)
- Bijan Parsia (Tuesday, 27 November)
- Jeremy Carroll (Tuesday, 27 November)
- Ivan Herman (Tuesday, 27 November)
- Ian Horrocks (Tuesday, 27 November)
- Ivan Herman (Tuesday, 27 November)
- ewallace@cme.nist.gov (Tuesday, 27 November)
- Ivan Herman (Tuesday, 27 November)
- Ivan Herman (Tuesday, 27 November)
- Alan Ruttenberg (Saturday, 24 November)
- Boris Motik (Thursday, 22 November)
- Jeremy Carroll (Thursday, 22 November)
- Jim Hendler (Wednesday, 21 November)
- Boris Motik (Wednesday, 21 November)
- Alan Ruttenberg (Wednesday, 21 November)
- Boris Motik (Wednesday, 21 November)
- OWL Working Group Issue Tracker (Tuesday, 20 November)
ISSUE-66 (mapping inconsistencies): REPORTED: inconsistencies between mapping rules
ISSUE-67 (reification): REPORTED: use of reification in mapping rules is unwise
- Ian Horrocks (Monday, 26 November)
- Jeremy Carroll (Monday, 26 November)
- Ian Horrocks (Monday, 26 November)
- Alan Ruttenberg (Friday, 23 November)
- Jeremy Carroll (Friday, 23 November)
- Alan Ruttenberg (Thursday, 22 November)
- Giorgos Stoilos (Thursday, 22 November)
- Jeremy Carroll (Thursday, 22 November)
- Giorgos Stoilos (Thursday, 22 November)
- Jim Hendler (Wednesday, 21 November)
- Jeremy Carroll (Wednesday, 21 November)
- Boris Motik (Wednesday, 21 November)
- Jeremy Carroll (Wednesday, 21 November)
- Boris Motik (Tuesday, 20 November)
- OWL Working Group Issue Tracker (Tuesday, 20 November)
ISSUE-68 (nonmonotonic mapping): REPORTED: mapping rules are non-monotonic
ISSUE-69 (punning): REPORTED: punning is incompatible with OWL Full
ISSUE-70 (lang tag datarange): REPORTED: create datarange of literals with given language tag
ISSUE-71 (datarange language range): REPORTED: create datarange of literals matching given language range
ISSUE-72 (Annotation Semantics): REPORTED: lack of annotation semantics is not backwardly compatible
ISSUE-73 (infinite universe): REPORTED: Should owl:Thing be necessarily infinite?
ISSUE-74 (XSD URIs for facets): REPORTED: Use the xsd namespace for the facet names
ISSUE-75 (Non tractable fragments): REPORTED: Tractable fragments that are not tractable
ISSUE-76 (DLP): REPORTED: DLP
ISSUE-77 (Horn-SHIQ): Extending Horn-SHIQ
ISSUE-78 (OWL LitEL++): OWL-Lite as EL++
ISSUE-79 (EL++): REPORTED: EL++ Variants
ISSUE-8 (dataproperty chains): REPORTED: add chains ending with data properties
ISSUE-8 (dataproperty chains): REPORTED: add chains ending with data properties)
ISSUE-80 (DL-Lite): REPORTED: DL-Lite
ISSUE-81 (reification, negative assertions): reification unwise in negative property assertions
ISSUE-82 (Conrad): Metamodel diagrams in Syntax document should be aligned with OMG ODM
ISSUE-83 (Vipul): Property Chain Axiom: P1 o P2 => P2 o P1
ISSUE-84 (Conrad): UML diagrams in the Structural Specification are not quite UML
issues being discussed: REPORTED vs ACCEPTED
issues derived from OWL 1.0 comments list and errata ....
low-level syntax issues
Minutes 20071121
Minutes 28/11/2007
mustUnderstand (was Re: Rich Annotations)
N-ary data predicates (see ISSUE-5)
needs for roundtripping
next week's UFDTF next call
Open issues dealing with user defined datatypes
organizational pages for the Wiki
OWL 1.1 design goals
Owl 1.1 DL and OWL 1.1 Full
owl rational datatype
OWL telecon minutes (for 7 Nov) now on wiki
OWL telecon minutes now on wiki
owl:imports vs xinclude
Possible meeting conflicts next two weeks - Please indicate regrets ASAP
procedural: can tf assign actions
Proliferation of types
proposal - Fragments redux (unifying the threads under Issues 75-80)
- Ian Horrocks (Friday, 30 November)
- Jim Hendler (Friday, 30 November)
- Jeremy Carroll (Friday, 30 November)
- Alan Wu (Thursday, 29 November)
- Carsten Lutz (Thursday, 29 November)
- Jim Hendler (Thursday, 29 November)
- Carsten Lutz (Thursday, 29 November)
- Jim Hendler (Thursday, 29 November)
- Bernardo Cuenca Grau (Thursday, 29 November)
- Jim Hendler (Thursday, 29 November)
Proposals for hosting F2F2
Punning and the "properties for classes" use case (from public-owl-dev)
- Ian Horrocks (Sunday, 11 November)
- Peter F. Patel-Schneider (Tuesday, 6 November)
- Alan Ruttenberg (Tuesday, 6 November)
- Peter F. Patel-Schneider (Tuesday, 6 November)
- Alan Ruttenberg (Tuesday, 6 November)
- Ian Horrocks (Sunday, 4 November)
- Ian Horrocks (Sunday, 4 November)
- Alan Ruttenberg (Sunday, 4 November)
- Peter F. Patel-Schneider (Friday, 2 November)
- Peter F. Patel-Schneider (Friday, 2 November)
- Alan Ruttenberg (Friday, 2 November)
- Jeremy Carroll (Friday, 2 November)
- Peter F. Patel-Schneider (Friday, 2 November)
- Alan Ruttenberg (Thursday, 1 November)
- Jeremy Carroll (Thursday, 1 November)
Question on RDFS3.0 (was Re: proposal - Fragments redux )
quoting conventions in email
raw minutes of today's meeting
RDF mapping of OWLClass, Datatype...
RDFS 3.0 and Oracle OWL Prime
RDFS 3.0 and Oracle OWL Prime (was Re: wiki page on fragments extended)
Related to ISSUE-6
resolution of editorial issues
Rich Annotation System Proposal
Rich Annotations
- Bijan Parsia (Monday, 26 November)
- Peter F. Patel-Schneider (Monday, 26 November)
- Bijan Parsia (Monday, 26 November)
- Peter F. Patel-Schneider (Monday, 26 November)
- Bijan Parsia (Monday, 26 November)
- Peter F. Patel-Schneider (Monday, 26 November)
- Bijan Parsia (Sunday, 25 November)
- Peter F. Patel-Schneider (Sunday, 25 November)
- Bijan Parsia (Sunday, 25 November)
- Peter F. Patel-Schneider (Sunday, 25 November)
- Bijan Parsia (Sunday, 25 November)
- Peter F. Patel-Schneider (Sunday, 25 November)
- Peter F. Patel-Schneider (Sunday, 25 November)
- Bijan Parsia (Sunday, 25 November)
- Peter F. Patel-Schneider (Sunday, 25 November)
- Bijan Parsia (Friday, 23 November)
- Jeremy Carroll (Friday, 23 November)
- Bijan Parsia (Friday, 23 November)
- Bijan Parsia (Friday, 23 November)
Rich Annotations Use Cases
Side issue: Table layout
Some wiki additions
Sorry! (Re: Datatype Defaulting in OWL)
Telecon for referencing externally defined datatypes
Telecon for referencing externally defined datatypes and re: UFDTF
UDFTF Who reads our documents
UFDTF - on stale docs
UFDTF - today's teleconference details (not Zakim!)
UFDTF - UFDs and Webont
UFDTF - who are we writing for
- Ivan Herman (Tuesday, 27 November)
- Bijan Parsia (Monday, 26 November)
- Kashyap, Vipul (Monday, 26 November)
- Bijan Parsia (Monday, 26 November)
- Kashyap, Vipul (Monday, 26 November)
- Jim Hendler (Monday, 26 November)
- Bijan Parsia (Monday, 26 November)
- Conrad Bock (Monday, 26 November)
- Jim Hendler (Monday, 26 November)
- Peter F. Patel-Schneider (Monday, 26 November)
- Bijan Parsia (Monday, 26 November)
- Jim Hendler (Monday, 26 November)
UFDTF dial in details
UFDTF dial in details confirmed
UFDTF F2F goals???
UFDTF from tech plenary session
UFDTF Metamodeling Document
- Conrad Bock (Friday, 30 November)
- Jeremy Carroll (Friday, 30 November)
- Peter F. Patel-Schneider (Friday, 30 November)
- Jeremy Carroll (Friday, 30 November)
- Conrad Bock (Friday, 30 November)
- Conrad Bock (Friday, 30 November)
- Peter F. Patel-Schneider (Friday, 30 November)
- Peter F. Patel-Schneider (Friday, 30 November)
- Conrad Bock (Friday, 30 November)
- Conrad Bock (Friday, 30 November)
- Conrad Bock (Friday, 30 November)
- Conrad Bock (Friday, 30 November)
- Bijan Parsia (Friday, 30 November)
- Peter F. Patel-Schneider (Friday, 30 November)
- Alan Ruttenberg (Friday, 30 November)
- Peter F. Patel-Schneider (Friday, 30 November)
- Elisa F. Kendall (Friday, 30 November)
- Peter F. Patel-Schneider (Friday, 30 November)
- Peter F. Patel-Schneider (Friday, 30 November)
- Peter F. Patel-Schneider (Friday, 30 November)
- Peter F. Patel-Schneider (Friday, 30 November)
- Boris Motik (Friday, 30 November)
- Alan Ruttenberg (Friday, 30 November)
- Peter F. Patel-Schneider (Friday, 30 November)
- Peter F. Patel-Schneider (Friday, 30 November)
- Alan Ruttenberg (Friday, 30 November)
- Elisa F. Kendall (Thursday, 29 November)
- Conrad Bock (Thursday, 29 November)
- Conrad Bock (Thursday, 29 November)
- Peter F. Patel-Schneider (Thursday, 29 November)
- Conrad Bock (Thursday, 29 November)
- Peter F. Patel-Schneider (Thursday, 29 November)
- Peter F. Patel-Schneider (Wednesday, 28 November)
- Peter F. Patel-Schneider (Wednesday, 28 November)
- Conrad Bock (Wednesday, 28 November)
- Conrad Bock (Wednesday, 28 November)
- Peter F. Patel-Schneider (Wednesday, 28 November)
- Conrad Bock (Wednesday, 28 November)
- Conrad Bock (Wednesday, 28 November)
- Peter F. Patel-Schneider (Wednesday, 28 November)
- Conrad Bock (Wednesday, 28 November)
- Peter F. Patel-Schneider (Wednesday, 28 November)
- Peter F. Patel-Schneider (Wednesday, 28 November)
- Conrad Bock (Wednesday, 28 November)
UFDTF minutes (draft)
UFDTF Minutes - Monday 26th Nov
UFDTF next call
UFDTF on the Face to Face Agenda?
UFDTF on Zakim in half an hour
UFDTF regular meeting time
UFDTF: Agenda for Monday 12 noon EST
UFDTF: Agenda Mon Dec 3rd
unnamed datatypes in RDF/XML
- Alan Ruttenberg (Thursday, 22 November)
- Jeremy Carroll (Wednesday, 21 November)
- Alan Ruttenberg (Wednesday, 21 November)
- Alan Ruttenberg (Wednesday, 21 November)
- Michael Smith (Tuesday, 20 November)
- Jeremy Carroll (Tuesday, 20 November)
- Bijan Parsia (Tuesday, 20 November)
- Alan Ruttenberg (Tuesday, 20 November)
- Bijan Parsia (Monday, 19 November)
- Jeremy Carroll (Monday, 19 November)
User defined datatypes & XML Schema WG
User Facing Documents
- Jeremy Carroll (Tuesday, 6 November)
- Peter F. Patel-Schneider (Monday, 5 November)
- Jeremy Carroll (Monday, 5 November)
- Jeremy Carroll (Monday, 5 November)
- Bijan Parsia (Sunday, 4 November)
- Jim Hendler (Friday, 2 November)
- Jeremy Carroll (Friday, 2 November)
- Bijan Parsia (Friday, 2 November)
- Jim Hendler (Friday, 2 November)
- Bijan Parsia (Friday, 2 November)
- Jim Hendler (Friday, 2 November)
Visual Rendering of OWL ontologies?
vote for F2F2 location and time (by 21 November)
what to do for suggested annotations (was Re: Rich Annotations Use Cases)
wiki page on fragments extended
Working Drafts, Recommendations, Working Group Notes etc.
XInclude
XML Schema datatypes
- Jeremy Carroll (Friday, 16 November)
- Bijan Parsia (Friday, 16 November)
- Carsten Lutz (Friday, 16 November)
- ewallace@cme.nist.gov (Thursday, 15 November)
- Jeff Z. Pan (Thursday, 15 November)
- Jeremy Carroll (Thursday, 15 November)
- Jeremy Carroll (Thursday, 15 November)
- Bijan Parsia (Thursday, 15 November)
- Carsten Lutz (Thursday, 15 November)
- Bijan Parsia (Thursday, 15 November)
- Carsten Lutz (Thursday, 15 November)
- Carsten Lutz (Thursday, 15 November)
- Bijan Parsia (Thursday, 15 November)
- Carsten Lutz (Wednesday, 14 November)
Last message date: Friday, 30 November 2007 23:25:28 UTC