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9th Russian National Conference on Irreversible Processes in Nature and Technics (RNC-IPNT)

作者： Korchagova, V. N. Kraposhin, M. V. Marchevsky, I. K. Smirnova, E. V. Russian Acad Sci Inst Syst Programming Alexander Solzhenitsyn St 25 Moscow 109004 Russia Bauman Moscow State Tech Univ 2 Ya Baumanskaya St 5 Moscow 105005 Russia

A droplet impact on a deep pool can induce macro-scale or micro-scale effects like a crown splash, a high-speed jet, formation of secondary droplets or thin liquid films, etc. It depends on the diameter and velocity of the droplet, liquid properties, effects of external forces and other factors that a ratio of dimensionless criteria can account for. In the present research, we considered the droplet and the pool consist of the same viscous incompressible liquid. We took surface tension into account but neglected gravity forces. We used two open-source codes (OpenFOAM and Gerris) for our computations. We review the possibility of using these codes for simulation of processes in free-surface flows that may take place after a droplet impact on the pool. Both codes simulated several modes of droplet impact. We estimated the effect of liquid properties with respect to the Reynolds number and Weber number. Numerical simulation enabled us to find boundaries between different modes of droplet impact on a deep pool and to plot corresponding mode maps. The ratio of liquid density to that of the surrounding gas induces several changes in mode maps. Increasing this density ratio suppresses the crown splash.

关键词： Drops

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Dynamic Diluted Taint Analysis for Evaluating Detected Policy Violations

Dynamic Diluted Taint Analysis for Evaluating Detected Polic...

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2017 Ivannikov ISPRAS Open Conference (ISPRAS)

作者： Bakulin, Maksim Klimushenkova, Maria Egorov, Danila RAS Ivannikov Inst Syst Programming Moscow Russia Yaroslav The Wise Novgorod State Univ Veliky Novgorod Russia Moscow MV Lomonosov State Univ Fac Computat Math & Cybernet Moscow Russia

ISBN: (纸本)9781538611326

Dynamic taint analysis is a well-known technique. This article describes some difficulties that have to be dealt with when using dynamic taint analysis with full-system emulation. A new method is proposed to evaluate the risk of a detected policy violation. The method is called Diluted Taint: each tainted byte has an assigned integer value that shows how much taint resides in this byte. High value represents fresh taint, that possesses more threat, low value means that many operations occurred with this fragment of data and it is not that dangerous. When a policy violation occurs, these values are used by an expert to quickly evaluate the potential threat and prioritize fixing dangerous ones first.

关键词： QEMU Dynamic taint analysis Overtainting

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Co-evolution of Meta-Modeling Syntax and Informal Semantics in Domain-Specific Modeling Environments - A Case Study of AUTOSAR 17

Co-evolution of Meta-Modeling Syntax and Informal Semantics ...

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ACM/IEEE 20th International Conference on Model Driven Engineering Languages and systems (MODELS)

作者： Durisic, Darko Motta, Corrado Staron, Miroslaw Tichy, Matthias Volvo Car Grp Dept Elect Syst Design Gothenburg Sweden Univ Gothenburg Dept Comp Sci & Engn Gothenburg Sweden Ulm Univ Inst Software Engn & Programming Languages Ulm Germany

ISBN: (纸本)9781538634929

One domain-specific modeling environment is centered around a domain-specific meta-model which defines syntax (modeling elements, e.g., classes) for the domain models. However, in order for the system designers to be able to construct meaningful models, semantics of the domain-specific meta-model needs to be described as well. This semantics is often provided in a form of informal natural language specifications that contain a set of design requirements, each describing the intended use of one or more modeling elements. Intuitively, introduction of new concepts into the modeling environment is expected to require changes in both meta-modeling syntax and informal semantics in such a way that their co-evolution is highly correlated. In order to test this hypothesis, we analyzed the relation between added classes, attributes, and connectors, as meta-modeling syntax, and modified/ added design requirements, as meta-modeling semantics, in a case study of the AUTOSAR meta-modeling environment. We found that new AUTOSAR concepts usually require both new modeling elements and new design requirements, but surprisingly adding more elements is not always followed by more requirements. This finding is also validated by the moderately strong correlation between the evolution of these two AUTOSAR metamodeling artifacts (Spearman's. 0,63 and Kendall's t 0,49). For system designers, this means that both meta-modeling syntax and informal semantics is important to be considered in the analysis of domain-specific meta-model evolution, but it may not be enough for understanding the use of all modeling elements. For designers responsible for the maintenance of domain-specific meta-models, this means that more effort shall be put into describing the semantics of all introduced modeling elements.

关键词： Syntactics Semantics Metamodeling Unified modeling language Analytical models Connectors Correlation Metamodeling Semantics Design Requirements Connector Device Component UML semiotics ANALYSIS MODELS syntax Coevolution meta-models Modeling Informal instruction repertory

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Reproducing Network Structure: a Comparative Study of Random Graph Generators

Reproducing Network Structure: a Comparative Study of Random...

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2017 Ivannikov ISPRAS Open Conference (ISPRAS)

作者： Drobyshevskiy, Mikhail Turdakov, Denis Kuznetsov, Sergey Russian Acad Sci Ivannikov Inst Syst Programming Moscow Russia Lomonosov Moscow State Univ Moscow Russia Natl Res Univ Higher Sch Econ Moscow Russia State Univ Moscow Inst Phys & Technol Moscow Russia

ISBN: (纸本)9781538611326

The problem of generating graphs similar to a given one arises in such tasks as data anonymization and significance testing of network mining tools. Main challenges lie in a rich diversity of graph domains emerging in various research areas and the uncertainty about graph properties to be reproduced. Our central statement is that a good graph generation model should follow two requirements on generated graphs: 1) similarity to the original one in terms of manifold graph metrics, and 2) variability wide enough to mimic natural diversity across a graph domain. In this work we have compared three state-of-the-art graph generators, Embedding based Random Graph Generator, Gscaler, and Stochastic Kronecker Graph, universal enough to fit an arbitrary graph. We found that ERGG and Gscaler greatly outperform SKG in graph reproducing accuracy in terms of graph metrics. An experiment with domain imitation showed that the variability of ERGG generated graphs resembled the original variability, while Gscaler graphs were almost identical.

关键词： Measurement Adaptation models Social network services Computational modeling Generators Task analysis Testing

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Checking several requirements at once by CEGAR

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programming AND COMPUTER SOFTWARE 2016年第4期42卷 225-238页

作者： Mordan, V. O. Mutilin, V. S. Russian Acad Sci Inst Syst Programming Ul Solzhenitsyna 25 Moscow 109004 Russia

Currently, static verifiers based on counterexample-guided abstraction refinement (CEGAR) can prove correctness of a program against a specified requirement, find its violation in a program, and stop analysis or exhaust the given resources without producing any useful result. Theoretically, we could use this approach for checking several requirements at once;however, finding of the first violation of some requirement or exhausting resources for some requirement will prevent from checking the program against other requirements. Moreover, if the program contains more than one violation of the requirement, CEGAR will find only the very first violation and may miss potential errors in the program. At the same time, static verifiers perform similar actions during checking of the same program against different requirements, which results in waste of a lot of resources. This paper presents a new CEGAR-based method for software static verification, which is aimed at checking programs against several requirements at once and getting the same result as basic CEGAR checking requirements one by one. To achieve this goal, the suggested method distributes resources over requirements and continues analysis after finding a violation of a requirement. We used Linux kernel modules to conduct experiments, in which implementation of the suggested method reduced total verification time by five times. The total number of divergent results in comparison with the base CEGAR was about 2%. Having continued the analysis after finding the first violation, this method guarantees that all violations of given requirements are found in 40% of cases, with the number of violations found being 1.5 times greater than in that in the base CEGAR approach.

关键词： Checking Once Verifiers

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Efficiency Evaluation Method for the Devices with Infrasound Impact on Functioning of Computer Equipment

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INTERNATIONAL JOURNAL OF ELECTRONICS AND TELECOMMUNICATIONS 2018年第2期64卷 189-196页

作者： Korchenko, Alexander Tereykovsky, Igor Aytkhozhaeva, Evgenia Seilova, Nurgul Kosyuk, Yevgeny Wojcik, Waldemar Komada, Pawel Sikora, Jan Natl Aviat Univ Dept Informat Technol Secur Kiev Ukraine Natl Tech Univ Ukraine Igor Sikorsky Kyiv Polytech Inst Dept Syst Programming & Specialised Comp Syst Kiev Ukraine Kazakh Natl Res Univ Dept Informat Secur Alma Ata Kazakhstan Lublin Univ Technol Fac Elect Engn & Informat Technol Lublin Poland

A significant threat to critical infrastructure of computer systems has a destructive impact caused by infrasound waves. It is shown that the known infrasound generations are based on using the following devices: a Helmholtz Resonator, Generation by using a Pulsating Sphere such as Monopolies, Rotor-type Radiator, Resonating Cylinder, VLF Speaker, Method of Paired Ultrasound Radiator, and airscrew. Research of these devices was made in this paper by revealing their characteristics, main advantages and disadvantages. A directional pattern of infrasound radiation and a graph of dependence of infrasound radiation from the consumed power was constructed. Also, during the analysis of these devices, there was proven a set of basic parameters, the values of which make it possible to characterize their structural and operational characteristics. Then approximate values of the proposed parameters of each those considered devices, were calculated. A new method was developed for evaluating the effectiveness of infrasound generation devices based on the definition of the integral efficiency index, which is calculated using the designed parameters. An example of practical application of the derived method, was shown. The use of the method makes it possible, taking into account the conditions and requirements of the infrasound generation devices construction, to choose from them the most efficient one.

关键词： information security computer hardware protection infrasound infrasound damage efficiency evaluation method

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Software library for spatial-temporal modeling and reasoning

Software library for spatial-temporal modeling and reasoning

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11th European Conference on Product and Process Modelling (ECPPM)

作者： Semenov, V. Kazakov, K. Petrishchev, K. Zolotov, V. RAS Inst Syst Programming Moscow Russia

ISBN: (纸本)9781315386904

Visual 4D modeling and planning technologies have recently begun to play a crucial role in the realization of complex construction projects and programs. They enable to improve communication and coordination among stakeholders and, thereby, to reduce risks and waste during the project implementation by means of simulation and visualization of project activities in space dimensions and across time. Modern project modeling systems possess some underlying functions for such purposes, but are still limited in reasoning capabilities necessary for automated validation of the project schedules in terms of their feasibility and absence of spatial-temporal conflicts. Basically, these are collisions and interferences of construction objects, missing collision-free paths to deliver the objects to destination positions in planned time, and invalid schedules leading to the objects hanging without any reliance. A software library providing advanced capabilities for spatial-temporal modeling and reasoning is presented in the paper. The library called Constructivity4D supports a representation of all of the core concepts in the scene modeling and possesses a wide range of operators and validation functions. The modeled dynamic scenes are suggested to be hierarchically organized with the objects obeying particular behavioral patterns. Being compliant with popular qualitative reasoning formalisms and relation algebras, the supported operators and functions can be combined to identify non-trivial spatial-temporal conflicts originated from the construction project validation problems. The paper discusses the design considerations of the library, its functionality, interfaces. Particular attention is also paid to applied computational methods and implementation details.

关键词： 4D modeling and planning collision detection spatial-temporal reasoning software engineering

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Adolescent transport and unintentional injuries: a systematic analysis using the Global Burden of Disease Study 2019

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LANCET PUBLIC HEALTH 2022年第8期7卷 E657-E669页

作者： Peden, Amy E. Cullen, Patricia Francis, Kate Louise Moeller, Holger Peden, Margaret M. Ye, Pengpeng Tian, Maoyi Zou, Zhiyong Sawyer, Susan M. Aali, Amirali Abbasi-Kangevari, Zeinab Abbasi-Kangevari, Mohsen Abdelmasseh, Michael Abdoun, Meriem Abd-Rabu, Rami Abdulah, Deldar Morad Abdurehman, Ame Mehadi Abebe, Getachew Abebe, Ayele Mamo Abedi, Aidin Abidi, Hassan Aboagye, Richard Gyan Ali, Hiwa Abubaker Abu-Gharbieh, Eman Adane, Denberu Eshetie Adane, Tigist Demssew Addo, Isaac Yeboah Adewole, Ololade Grace Adhikari, Sangeet Adnan, Mohammad Adnani, Qorinah Estiningtyas Sakilah Afolabi, Aanuoluwapo Adeyimika Bachelor Afzal, Saira Afzal, Muhammad Sohail Aghdam, Zahra Babaei Ahinkorah, Bright Opoku Ahmad, Araz Ramazan Ahmad, Tauseef Ahmad, Sajjad Ahmadi, Ali Ahmed, Haroon Ahmed, Muktar Beshir Ahmed, Ali Ahmed, Ayman Ahmed, Jivan Qasim Rashid, Tarik Ahmed Aithala, Janardhana P. Aji, Budi Akhlaghdoust, Meisam Alahdab, Fares Alanezi, Fahad Mashhour Alemayehu, Astawus Al Hamad, Hanadi Ali, Syed Shujait Ali, Liaqat Alimohamadi, Yousef Alipour, Vahid Aljunid, Syed Mohamed Almidani, Louay Almustanyir, Sami Altirkawi, Khalid A. Alvis-Zakzuk, Nelson J. Ameyaw, Edward Kwabena Amin, Tarek Tawfik Amir-Behghadami, Mehrdad Amiri, Sohrab Amiri, Hoda Anagaw, Tadele Fentabil Andrei, Tudorel Andrei, Catalina Liliana Anvari, Davood Anwar, Sumadi Lukman Anyasodor, Anayochukwu Edward Arabloo, Jalal Arab-Zozani, Morteza Arja, Asrat Arulappan, Judie Arumugam, Ashokan Aryannejad, Armin Asgary, Saeed Ashraf, Tahira Athari, Seyyed Shamsadin Atreya, Alok Attia, Sameh Aujayeb, Avinash Awedew, Atalel Fentahun Azadnajafabad, Sina Azangou-Khyavy, Mohammadreza Azari, Samad Jafari, Amirhossein Azari Azizi, Hosein Azzam, Ahmed Y. Badiye, Ashish D. Baghcheghi, Nayereh Bagherieh, Sara Baig, Atif Amin Bakkannavar, Shankar M. Balta, Asaminew Birhanu Banach, Maciej Banik, Palash Chandra Bansal, Hansi Bardhan, Mainak Barone-Adesi, Francesco Barrow, Amadou Bashiri, Azadeh Baskaran, Pritish Basu, Saurav Bayileyegn, Nebiyou Simegnew Bekel, Abebe Ayalew Bekele, UNSW Sydney Kensington NSW 2052 Australia Univ New South Wales Sch Publ Hlth & Community Med Sydney NSW Australia Univ New South Wales Populat Hlth Dept Sydney NSW Australia Univ New South Wales Sch Populat Hlth Sydney NSW Australia Univ New South Wales George Inst Global Hlth Sydney NSW Australia Univ New South Wales Ctr Social Res Hlth Sydney NSW Australia James Cook Univ Sch Publ Hlth Med & Vet Sci Townsville NSW Australia George Inst Global Hlth Global Womens Hlth Div Newtown NSW Australia George Inst Global Hlth Injury Div Newtown NSW Australia George Inst Global Hlth Dept Injury Newtown NSW Australia Murdoch Childrens Res Inst Ctr Adolescent Hlth Melbourne Vic Australia Imperial Coll London Sch Publ Hlth London England Imperial Coll London Dept Primary Care & Publ Hlth London England Imperial Coll London WHO Collaborating Ctr Publ Hlth Educ & Training London England George Inst Global Hlth TGI UK London England Chinese Ctr Dis Control & Prevent Natl Ctr Chron & Noncommunicable Dis Control & Pr Beijing Peoples R China Harbin Med Univ Sch Publ Hlth Harbin Peoples R China Peking Univ Inst Child & Adolescent Hlth Beijing Peoples R China Univ Melbourne Dept Paediat Parkville Vic Australia Murdoch Childrens Res Inst Ctr Adolescent Hlth Parkville Vic Australia Mashhad Univ Med Sci Fac Med Mashhad Razavi Khorasan Iran Mashhad Univ Med Sci E Learning Ctr Mashhad Razavi Khorasan Iran Mashhad Univ Med Sci Dept Nursing Mashhad Razavi Khorasan Iran Mashhad Univ Med Sci Dept Med Informat Mashhad Razavi Khorasan Iran Mashhad Univ Med Sci Clinial Res Dev Unit Mashhad Razavi Khorasan Iran Shiraz Univ Med Sci Hlth Policy Res Ctr Shiraz Iran Shiraz Univ Med Sci Hlth Informat Management Dept Shiraz Iran Shiraz Univ Med Sci Dept Epidemiol Shiraz Iran Shiraz Univ Med Sci Dept Phys Therapy Shiraz Iran Shahid Beheshti Univ Med Sci Social Determinants Hlth Res Ctr Tehran Iran Shahid Beheshti Univ Med Sci Dept Epidemiol Tehra

Background Globally, transport and unintentional injuries persist as leading preventable causes of mortality and morbidity for adolescents. We sought to report comprehensive trends in injury-related mortality and morbidity for adolescents aged 10-24 years during the past three decades. Methods Using the Global Burden of Disease, Injuries, and Risk Factors 2019 Study, we analysed mortality and disability-adjusted life-years (DALYs) attributed to transport and unintentional injuries for adolescents in 204 countries. Burden is reported in absolute numbers and age-standardised rates per 100 000 population by sex, age group (10-14, 15-19, and 20-24 years), and sociodemographic index (SDI) with 95% uncertainty intervals (UIs). We report percentage changes in deaths and DALYs between 1990 and 2019. Findings In 2019, 369 061 deaths (of which 214337 [58%] were transport related) and 31.1 million DALYs (of which 16.2 million [52%] were transport related) among adolescents aged 10-24 years were caused by transport and unintentional injuries combined. If compared with other causes, transport and unintentional injuries combined accounted for 25% of deaths and 14% of DALYs in 2019, and showed little improvement from 1990 when such injuries accounted for 26% of adolescent deaths and 17% of adolescent DALYs. Throughout adolescence, transport and unintentional injury fatality rates increased by age group. The unintentional injury burden was higher among males than females for all injury types, except for injuries related to fire, heat, and hot substances, or to adverse effects of medical treatment. From 1990 to 2019, global mortality rates declined by 34.4% (from 17.5 to 11.5 per 100 000) for transport injuries, and by 47.7% (from 15.9 to 8.3 per 100000) for unintentional injuries. However, in low-SDI nations the absolute number of deaths increased (by 80.5% to 42 774 for transport injuries and by 39.4% to 31 961 for unintentional injuries). In the high-SDI quintile in 2010-19, the

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Incremental model checking of delta-oriented software product lines

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JOURNAL OF LOGICAL AND ALGEBRAIC METHODS IN programming 2016年第1期85卷 245-267页

作者： Lochau, Malte Mennicke, Stephan Baller, Hauke Ribbeck, Lars Tech Univ Darmstadt Real Time Syst Lab Darmstadt Germany TU Braunschweig Inst Programming & React Syst Braunschweig Germany

We propose DeltaCCS, a delta-oriented extension to Miler's process calculus CCS to formalize behavioral variability in software product line specifications in a modular way. In DeltaCCS, predefined change directives are applied to core process semantics by overriding the CCS term rewriting rule in a determined way. On this basis, behavioral properties expressed in the Modal mu-Calculus are verifiable for entire product-line specifications both product-by-product as well as in a family-based manner as usual. To overcome potential scalability limitations of those existing strategies, we propose a novel approach for incremental model checking of product lines. Therefore, variability-aware congruence notions and a respective normal form for DeltaCCS specifications allow for a rigorous local reasoning on the preservation of behavioral properties after varying CCS specifications. We present a prototypical DeltaCCS model checker implementation based on MAUDE and provide evaluation results obtained from various experiments concerning efficiency trade-offs compared to existing approaches. (C) 2015 Elsevier Inc. All rights reserved.

关键词： Variability modeling Operational semantics Model checking

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Maintaining ISA Specifications in MicroTESK Test Program Generator 18

Maintaining ISA Specifications in MicroTESK Test Program Gen...

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18th International Workshop on Microprocessor and SOC Test, Security and Verification (MTV)

作者： Chupilko, Mikhail Kamkin, Alexander Kotsynyak, Artem Protsenko, Alexander Smolov, Sergey Tatarnikov, Andrei Russian Acad Sci ISP RAS Ivannikov Inst Syst Programming Moscow Russia Lomonosov Moscow State Univ MSU Moscow Russia Moscow Inst Phys & Technol Dolgoprudnyi Moskovskaya Obl Russia Natl Res Univ Higher Sch Econ Moscow Russia

ISBN: (纸本)9781538633519

The specification-based approach is widely used for test program generation for functional verification of microprocessors. The size of microprocessor specifications is measured in thousands lines of code. Consequently, their maintenance requires significant effort. Typical maintenance activities include regular updates, substitution of deprecated functionality, and support for new revisions and implementation-defined features. Our team is working on MicroTESK, a tool that generates test programs for microprocessors based on specifications of the instruction set architectures. The specifications are created in a specialized language, called nML, extended with facilities to manage revision-specific and implementation-defined features. The tool has been applied to ARMv8, MIPS64, PowerPC, RISC-V, and x86 microprocessors. This paper describes our experience in maintaining specifications and the approach we use to simplify this process.

关键词： Registers Microprocessors Tools DSL Syntactics Maintenance engineering instruction sets

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