We introduce the Hybrid Automata Stochastic Logic (HASL), a new temporal logic formalism for the verification of discrete event stochastic processes (DESP). HASL employs Linear Hybrid Automata (LHA) as machineries to select prefixes of relevant execution paths of a DESP D. The advantage with LHA is that rather elaborate information can be collected on-the-fly during path selection, providing th...

We introduce the Hybrid Automata Stochastic Language (HASL), a new temporal logic formalism for the verification of Discrete Event Stochastic Processes (DESP). HASL employs a Linear Hybrid Automaton (LHA) to select prefixes of relevant execution paths of a DESP. LHA allows rather elaborate information to be collected on-the-fly during path selection, providing the user with powerful means to ex...

BACKGROUND To evaluate ungated nonenhanced hybridized arterial spin labeling (hASL) magnetic resonance angiography (MRA) of the extracranial carotid arteries using a fast low angle shot (FLASH) readout at 3 Tesla. METHODS In this retrospective, institutional review board-approved and HIPAA-compliant study, we evaluated the image quality (4-point scale) of nonenhanced hASL MRA using a FLASH re...

The recently introduced Hybrid Automata Stochastic Logic (HASL) [8] establishes a powerful framework for the analysis of a broad class of stochastic processes, namely Discrete Event Stochastic Processes (DESPs). Here we demonstrate the potential of HASL based verification in the context of genetic circuits. To this aim we consider the analysis of a model of gene expression with delayed stochast...

ine pitch surfact mount technology (SMT) devices are forcing F the industry to look for alternatives to the traditional hot-air solder leveling (HASL) process. Although HASL gives an excellent surface for solderability it has its shortcomings. HASL finishes are not flat (see Fig. I), they contain lead, are not aluminum or gold wire-bondable and the resulting board has already undergone a therma...

Tekstil kuma?lar üzerine görüntü çok çe?itli yöntemler ile olu?turulmaktad?r. Kuma? farkl? olu?turma yöntemlerinden biri olan sublimasyon transfer bask? yöntemi çal??mada naylon ve polyester kuma? uygulanm??t?r. Kullan?lan kuma?lara hem 1500C de 2000C olmak üzere iki s?cakl?kta 30sn, 60sn 120sn presleme süresi bask?lar gerçekle?tirilmi?tir. Hasl?k özelliklerinin analizi birlikte belirlenen pros...

We propose in this thesis several contributions related to the quantitative verification of systems. This discipline aims to evaluate functional and performance properties of a system. Such a verification requires two ingredients: a formal model to represent the system and a temporal logic to express the desired property. Then the evaluation is done with a statistical or numerical method. The s...

Passage time measures specification and computation for Generalized Stochastic Petri Net models have been faced in the literature from different points of view. In particular three aspects have been developed: (1) how to select a specific token (called the tagged token) and measure the distribution of the time employed from an entry to an exit point in a subnet; (2) how to specify in a flexible...

The development of strategies to combat hepatic disease and augment tissue regeneration has created a need for methods to assess regional liver function. Liver perfusion imaging has the potential to fulfil this need, across a range of hepatic diseases, alongside the assessment of therapeutic response. In this study, the feasibility of hepatic arterial spin labelling (HASL) was assessed for the ...