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Parametric Higher-Order Abstract Syntax for Mechanized Semantics

by Adam Chlipala , 2008
"... We present parametric higher-order abstract syntax (PHOAS), a new approach to formalizing the syntax of programming languages in computer proof assistants based on type theory. Like higherorder abstract syntax (HOAS), PHOAS uses the meta language’s binding constructs to represent the object language ..."
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We present parametric higher-order abstract syntax (PHOAS), a new approach to formalizing the syntax of programming languages in computer proof assistants based on type theory. Like higherorder abstract syntax (HOAS), PHOAS uses the meta language’s binding constructs to represent the object

T.: Compositional Data Types

by Patrick Bahr, Tom Hvitved - In: Proceedings of the Seventh ACM SIGPLAN Workshop on Generic Programming , 2011
"... In previous work we have illustrated the benefits that compositional data types (CDTs) offer for implementing languages and in general for dealing with abstract syntax trees (ASTs). Based on Swierstra’s data types à la carte, CDTs are implemented as a Haskell library that enables the definition of r ..."
Abstract - Cited by 18 (7 self) - Add to MetaCart
In previous work we have illustrated the benefits that compositional data types (CDTs) offer for implementing languages and in general for dealing with abstract syntax trees (ASTs). Based on Swierstra’s data types à la carte, CDTs are implemented as a Haskell library that enables the definition

Translating Dependent Type Theory into Higher Order Logic

by Bart Jacobs, Tom Melham - IN PROCEEDINGS OF THE SECOND INTERNATIONAL CONFERENCE ON TYPED LAMBDA CALCULI AND APPLICATIONS, VOLUME 664 OF LECTURE NOTES IN COMPUTER SCIENCE , 1993
"... This paper describes a translation of the complex calculus of dependent type theory into the relatively simpler higher order logic originally introduced by Church. In particular, it shows how type dependency as found in Martin-Löf's Intuitionistic Type Theory can be simulated in the formulat ..."
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This paper describes a translation of the complex calculus of dependent type theory into the relatively simpler higher order logic originally introduced by Church. In particular, it shows how type dependency as found in Martin-Löf's Intuitionistic Type Theory can be simulated

This work is licensed under the Creative Commons Attribution License. Parametric Compositional Data Types

by C P. Bahr, T. Hvitved, Patrick Bahr, Tom Hvitved
"... In previous work we have illustrated the benefits that compositional data types (CDTs) offer for im-plementing languages and in general for dealing with abstract syntax trees (ASTs). Based on Swier-stra’s data types a ̀ la carte, CDTs are implemented as a Haskell library that enables the definition ..."
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In previous work we have illustrated the benefits that compositional data types (CDTs) offer for im-plementing languages and in general for dealing with abstract syntax trees (ASTs). Based on Swier-stra’s data types a ̀ la carte, CDTs are implemented as a Haskell library that enables the definition

2003. Functional analysis of a divergent system II protein, Ccs1, involved in c-type cytochrome biogenesis

by Beth Welty Dreyfuss, Patrice P. Hamel, Stacie S. Nakamoto, Sabeeha Merchant
"... The Ccs1 gene, encoding a highly divergent novel component of a system II type c-type cytochrome biogenesis pathway, is encoded by the previously defined CCS1 locus in Chlamydomonas reinhardtii. phoA and lacZ� bacterial topological reporters were used to deduce a topological model of the Synechocyst ..."
Abstract - Cited by 5 (1 self) - Add to MetaCart
The Ccs1 gene, encoding a highly divergent novel component of a system II type c-type cytochrome biogenesis pathway, is encoded by the previously defined CCS1 locus in Chlamydomonas reinhardtii. phoA and lacZ� bacterial topological reporters were used to deduce a topological model

Supplemental Data Mating Type and the Genetic Basis of Self-Fertility in the Model Fungus

by Aspergillus Nidulans, Mathieu Paoletti, Fabian A. Seymour, Marcos J. C. Alcocer, Navgeet Kaur, Ana M. Calvo, David B. Archer, Paul S. Dyer
"... At least 40 genes are known to be required for, or correlated with, sexual reproduction in A. nidulans as described in a recent review [S1]. These include genes involved with the following: perception of environmental signals (e.g the phytochrome fphA [S2], sexual activator veA [S3] and cyclin-depen ..."
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-dependent kinase phoA [S4]); signal transduction pathways (see main text); genes encoding transcription factors/regulatory proteins (e.g., medA [S5], stuA [S6], nsdD [S7], rosA [S8], nosA [S9], the developmental regulator dopA [S10], and signalosome elements csnD and csnE [S11]); and genes involved

A proposed categorical semantics for ML modules

by Michael Fourman, Hayo Thielecke , 1995
"... We present a simple categorical semantics for ML signatures, structures and functors. Our approach relies on realizablity semantics in the category of assemblies. Signatures and structures are modelled as objects in slices of the category of assemblies. Instantiation of signatures to structures and ..."
Abstract - Cited by 1 (1 self) - Add to MetaCart
and hence functor application is modelled by pullback. 1 Introduction Building on work on the semantics of programming languages in realizability models, in particular that of Wesley Phoa [Pho90] and John Longley [Lon95], we sketch a simple approach to elements of the ML modules system, such as signatures

Membrane Topology Analysis of the Sensor Kinase KdpD of Escherichia coli*

by Petra Zimmann, Karlheinz Altendorf
"... The expression of the kdpFABC operon, coding for the K �-translocating Kdp-ATPase, is under the control of the two regulatory proteins KdpD and KdpE, which belong to the group of sensor kinase/response regulator systems. The topology of the KdpD protein in the cytoplasmic membrane was investigated u ..."
Abstract - Cited by 12 (2 self) - Add to MetaCart
using LacZ and PhoA fusions at different sites within the polypeptide chain and by treating spheroplasts in the presence or absence of Triton X-100 with the protease kallikrein. The results revealed that KdpD has four membranespanning segments in the middle of the polypeptide chain, whereas N and C

Mitotic Block and Delayed Lethality in HeLa Epithelial Cells Exposed to Escherichia coli BM2-1 Producing Cytotoxic Necrotizing Factor Type 1

by unknown authors
"... The cytopathic effect (CPE) of Escherichia coli producing cytotoxic necrotizing factor type 1 (CNF1) was investigated by using a human epithelial cell (HeLa) model of infection with CNF1-producing E. coli BM2-1. This strain was shown to bind loosely, but massively, to HeLa cells. A 4-h interaction b ..."
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The cytopathic effect (CPE) of Escherichia coli producing cytotoxic necrotizing factor type 1 (CNF1) was investigated by using a human epithelial cell (HeLa) model of infection with CNF1-producing E. coli BM2-1. This strain was shown to bind loosely, but massively, to HeLa cells. A 4-h interaction

Agrobacterium tumefaciens Type IV Secretion Protein VirB3 Is an Inner Membrane Protein and Requires VirB4, VirB7

by Virb For Stabilization, Pamela Mossey, Andrew Hudacek, Anath Das , 2009
"... Agrobacterium tumefaciens VirB proteins assemble a type IV secretion apparatus and a T-pilus for secretion of DNA and proteins into plant cells. The pilin-like protein VirB3, a membrane protein of unknown topology, is required for the assembly of the T-pilus and for T-DNA secretion. Using PhoA and g ..."
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Agrobacterium tumefaciens VirB proteins assemble a type IV secretion apparatus and a T-pilus for secretion of DNA and proteins into plant cells. The pilin-like protein VirB3, a membrane protein of unknown topology, is required for the assembly of the T-pilus and for T-DNA secretion. Using PhoA
Results 1 - 10 of 24