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Modeling BPEL and BPEL4People with a Timed Interruptable ?-Calculus
JIN Wei,WANG Hanpin,ZHU Meixia
Acta Scientiarum Naturalium Universitatis Pekinensis
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Modeling WS-BPEL Process under the Dead-Path-Elimination
XU Chunxiang,QU Wanling,WANG Hanpin,ZHU Meixia
Acta Scientiarum Naturalium Universitatis Pekinensis
Abstract
(
750
)
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A new model named DPE net is advanced for describing the WS-BPEL process under the dead-path-elimination semantics. Color sets CTRL and STAT are introduced to represent the states of activities and status of links within activity flow. This can reduce the scale of the model, thus a more intuitive model can be got. DPE net models for various control structures of WS-BPEL are given, which describe not only basic control flow, including basic activities and structured activities, but also dead path elimination semantics and relatively complete link semantics, including join conditions and transition conditions. Finally, a case study shows that modeling WS-BPEL process with DPE net will help get more accurate analysis results.
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On Elementary Submodels of A Lattice-valued Model for Language
L
(
Q
)
XIE Huiyang,WANG Hanpin
Acta Scientiarum Naturalium Universitatis Pekinensis
Abstract
(
644
)
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The two-value weak model for first order logic with generalized quantifier
Q
is generalized to be valued in complete weak complemented lattices. For finite linearly-ordered weak complemented lattice, some properties on elementary extension of models for
L
(
Q
), such as strong downward L-S-T Theorem and the preservation of the elementary diagram under elementary extensions, are discussed.
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The Omitting Type Theorem in Lattice-valued Model Theory of
L
(
Q
)
WANG Hanpin,XIE Huiyang
Acta Scientiarum Naturalium Universitatis Pekinensis
Abstract
(
839
)
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The two-valued weak model of the first order logic with generalized quantifier
Q
is generalized to be valued in complete weak complemented lattices. For finite linearly-ordered weak complemented lattice, the omitting type theorem is proved.
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Preservation of Model-theoretic Properties of Modules when It is Fracted
WANG Hanpin
Acta Scientiarum Naturalium Universitatis Pekinensis
Abstract
(
755
)
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Viewing modules
M
S
-1
R
over a fractional ring
S
-1
R
of a ring
R
as modules
M
R
over
R
, It is proved that some model-theoretic properties of modules, such as purity, pure embedding, elementary equivalence, elementary embedding, are preserved. The relations of such properties between
M
R
and (
S
-1
M
)
S
-1
R
are also considered.
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Preservation of Elementary Properties of the Theory of Modules when Their Underlying Ring is Limited to an Ideal of the Ring
WANG Hanpin
Acta Scientiarum Naturalium Universitatis Pekinensis
Abstract
(
626
)
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Let
R
be an ideal of a ring with unity,
M
R
be a
R
-module. Then
M
also can be viewed as a
I
-module. It is proved that some elementary properties of the theory of modules, such as purity, pure-injectivity, elementary equivalent, elementary embedding etc. are reserved between
M
R
and
M
I
.
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