59 research outputs found
Omezená právní osobnost pobočného spolku a její důsledky
Občanský zákoník umožňuje zakládání pobočných spolků, jež jsou právnickými osobami, avšak jejichž právní subjektivita je odvozena od subjektivity hlavního spolku a může být stanovami hlavního spolku omezena. Následující článek rozebírá předpoklady a důsledky takového omezení pro hmotněprávní a procesní jednání pobočného spolku, jakož i problematiku aplikovatelnosti pravidel o omezené právní osobnosti pobočných spolků na odborové organizace založené jinými odborovými organizacemi, jejichž status byl modifikován (a znejasněn) zákonem č. 460/2016 Sb.The Civil Code allows for establishment of subordinate associations which are legal entities whose legal personality is derived from the personality of the main association and can be limited by a provision in the statutes of the main association. The following treatise analyses the preconditions and the consequences of such limitation for substantive and procedural acts of subordinate associations and deals with the topic of applicability of the rules pertaining to limited legal personality of subordinate associations on labour unions founded by other labour unions, whose status has been modified (and made unclear) by Act No. 460/2016 Coll
Model Checking C++ with Exceptions
We present an extension of the DIVINE software model checker tosupport programs with exception handling. The extension consists of two parts, a language-neutral implementation of the LLVM exception-handling instructions, and an adaptation of the C++ runtime for the DIVINE/LLVM exception model. This constitutes an important step towards support of both the full C++ specification and towards verification of real-world C++ programs using a software model checker. Additionally, we show how these extensions can be used to elegantly implement other features with non-local control transfer, most importantly the longjmp function in C
DiVinE-CUDA - A Tool for GPU Accelerated LTL Model Checking
In this paper we present a tool that performs CUDA accelerated LTL Model
Checking. The tool exploits parallel algorithm MAP adjusted to the NVIDIA CUDA
architecture in order to efficiently detect the presence of accepting cycles in
a directed graph. Accepting cycle detection is the core algorithmic procedure
in automata-based LTL Model Checking. We demonstrate that the tool outperforms
non-accelerated version of the algorithm and we discuss where the limits of the
tool are and what we intend to do in the future to avoid them
Using Strategy Improvement to Stay Alive
We design a novel algorithm for solving Mean-Payoff Games (MPGs). Besides
solving an MPG in the usual sense, our algorithm computes more information
about the game, information that is important with respect to applications. The
weights of the edges of an MPG can be thought of as a gained/consumed energy --
depending on the sign. For each vertex, our algorithm computes the minimum
amount of initial energy that is sufficient for player Max to ensure that in a
play starting from the vertex, the energy level never goes below zero. Our
algorithm is not the first algorithm that computes the minimum sufficient
initial energies, but according to our experimental study it is the fastest
algorithm that computes them. The reason is that it utilizes the strategy
improvement technique which is very efficient in practice
On Expressing and Monitoring Oscillatory Dynamics
To express temporal properties of dense-time real-valued signals, the Signal
Temporal Logic (STL) has been defined by Maler et al. The work presented a
monitoring algorithm deciding the satisfiability of STL formulae on finite
discrete samples of continuous signals. The logic has been used to express and
analyse biological systems, but it is not expressive enough to sufficiently
distinguish oscillatory properties important in biology. In this paper we
define the extended logic STL* in which STL is augmented with a signal-value
freezing operator allowing us to express (and distinguish) detailed properties
of biological oscillations. The logic is supported by a monitoring algorithm
prototyped in Matlab. The monitoring procedure of STL* is evaluated on a
biologically-relevant case study.Comment: In Proceedings HSB 2012, arXiv:1208.315
BioDiVinE: A Framework for Parallel Analysis of Biological Models
In this paper a novel tool BioDiVinEfor parallel analysis of biological
models is presented. The tool allows analysis of biological models specified in
terms of a set of chemical reactions. Chemical reactions are transformed into a
system of multi-affine differential equations. BioDiVinE employs techniques for
finite discrete abstraction of the continuous state space. At that level,
parallel analysis algorithms based on model checking are provided. In the
paper, the key tool features are described and their application is
demonstrated by means of a case study
Platform Dependent Verification: On Engineering Verification Tools for 21st Century
The paper overviews recent developments in platform-dependent explicit-state
LTL model checking.Comment: In Proceedings PDMC 2011, arXiv:1111.006
Precise parameter synthesis for stochastic biochemical systems
We consider the problem of synthesising rate parameters for stochastic biochemical networks so that a given time-bounded CSL property is guaranteed to hold, or, in the case of quantitative properties, the probability of satisfying the property is maximised or minimised. Our method is based on extending CSL model checking and standard uniformisation to parametric models, in order to compute safe bounds on the satisfaction probability of the property. We develop synthesis algorithms that yield answers that are precise to within an arbitrarily small tolerance value. The algorithms combine the computation of probability bounds with the refinement and sampling of the parameter space. Our methods are precise and efficient, and improve on existing approximate techniques that employ discretisation and refinement. We evaluate the usefulness of the methods by synthesising rates for three biologically motivated case studies: infection control for a SIR epidemic model; reliability analysis of molecular computation by a DNA walker; and bistability in the gene regulation of the mammalian cell cycle
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