Basing a Modeling Environment on a General Purpose Theorem Prover

2006 ◽  
Author(s):  
Myla Archer
Keyword(s):  
General Purpose ◽  
Theorem Prover ◽  
Modeling Environment

scholarly journals Automated Proof of Authentication Protocols in a Logic of Events

10.29007/r7n1 ◽  
2018 ◽  
Author(s):  
Mark Bickford
Keyword(s):  
General Purpose ◽  
Theorem Prover ◽  
Authentication Protocols ◽  
Protocol Composition ◽  
New Concepts ◽  
Causal Ordering ◽  
Automated Proof

Using the language of event orderings and event classes, and using a type of atoms to represent nonces, keys, signatures, and ciphertexts, we give an axiomatization of a theory in which authentication protocols can be formally defined and strong authentication properties proven. This theory is inspired by PCL, the protocol composition logic defined by Datta, Derek, Mitchell, and Roy.We developed a general purpose <i>tactic</i> (in the NuPrl theorem prover), and applied it to automatically prove that several protocols satisfy a strong authentication property. Several unexpected subtleties exposed in this development are addressed with new concepts <i>legal protocols</i>, and a <i>fresh signature criterion</i> - and reasoning that makes use of a well-founded causal ordering on events.This work shows that proofs in a logic like PCL can be automated, provides a new and possibly simpler axiomatization for a theory of authentication, and addresses some issues raised in a critique of PCL.

Efficient large-scale configuration via integer linear programming

2013 ◽  
Vol 27 (1) ◽  
pp. 37-49 ◽  
Author(s):  
Ingo Feinerer
Keyword(s):  
Linear Programming ◽  
Integer Linear Programming ◽  
Large Scale ◽  
Unified Modeling Language ◽  
General Purpose ◽  
Linear Program ◽  
Integer Linear Program ◽  
Practical Applications ◽  
Unified Modeling ◽  
Modeling Environment

AbstractConfiguration of large-scale applications in an engineering context requires a modeling environment that allows the design engineer to draft the configuration problem in a natural way and efficient methods that can process the modeled setting and scale with the number of components. Existing configuration methods in artificial intelligence typically perform quite well in certain subareas but are hard to use for general-purpose modeling without mathematical or logics background (the so-called knowledge acquisition bottleneck) and/or have scalability issues. As a remedy to this important issue both in theory and in practical applications, we use a standard modeling environment like the Unified Modeling Language that has been proposed by the configuration community as a suitable object-oriented formalism for configuration problems. We provide a translation of key concepts of class diagrams to inequalities and identify relevant configuration aspects and show how they are treated as an integer linear program. Solving an integer linear program can be done efficiently, and integer linear programming scales well to large configurations consisting of several thousands components and interactions. We conduct an empirical study in the context of package management for operating systems and for the Linux kernel configuration. We evaluate our methodology by a benchmark and obtain convincing results in support for using integer linear programming for configuration applications of realistic size and complexity.

PENGARUH LATIHAN RANGE OF MOTION (ROM) AKTIF ASSITIF TERHADAP RENTANG GERAK SENDI PADA LANSIA YANG MENGALAMI IMMOBILISASI FISIK

2019 ◽  
Vol 13 (2) ◽  
Author(s):  
Andri Setyorini ◽  
Niken Setyaningrum
Keyword(s):  
Range Of Motion ◽  
Human Life ◽  
The Elderly ◽  
General Purpose ◽  
Test Statistic ◽  
Physical Mobility ◽  
Motion Exercise ◽  
The One ◽  
The Individual ◽  
Active Training

Background: Elderly is the final stage of the human life cycle, that is part of the inevitable life process and will be experienced by every individual. At this stage the individual undergoes many changes both physically and mentally, especially setbacks in various functions and abilities he once had. Preliminary study in Social House Tresna Wreda Yogyakarta Budhi Luhur Units there are 16 elderly who experience physical immobilization. In the social house has done various activities for the elderly are still active, but the elderly who experienced muscle weakness is not able to follow the exercise, so it needs to do ROM (Range Of Motion) exercise.   Objective: The general purpose of this research is to know the effect of Range Of Motion (ROM) Active Assitif training to increase the range of motion of joints in elderly who experience physical immobility at Social House of Tresna Werdha Yogyakarta unit Budhi Luhur.   Methode: This study was included in the type of pre-experiment, using the One Group Pretest Posttest design in which the range of motion of the joints before (pretest) and posttest (ROM) was performed  ROM. Subjects in this study were all elderly with impaired physical mobility in Social House Tresna Wreda Yogyakarta Unit Budhi Luhur a number of 14 elderly people. Data analysis in this research use paired sample t-test statistic  Result: The result of this research shows that there is influence of ROM (Range of Motion) Active training to increase of range of motion of joints in elderly who experience physical immobility at Social House Tresna Wredha Yogyakarta Unit Budhi Luhur.  Conclusion: There is influence of ROM (Range of Motion) Active training to increase of range of motion of joints in elderly who experience physical immobility at Social House Tresna Wredha Yogyakarta Unit Budhi Luhur.

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