309 research outputs found

    Ways for reducing mortality from cardiovascular diseases: A review

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    Ways for reducing mortality from cardiovascular diseases The article analyzes the possible ways to further reduce cardiovascular disease mortality in the Russian Federation by eliminating shortcomings and pitfalls, introducing known but not used opportunities, and new organizational and medical technologies based on the accumulated experience of "best practice"

    ΠŸΡ€ΠΎΠ΅ΠΊΡ‚ΠΈΡ€ΠΎΠ²Π°Π½ΠΈΠ΅ ΠΈ Ρ€Π°Π·Ρ€Π°Π±ΠΎΡ‚ΠΊΠ° ΠΈΠΌΠΈΡ‚Π°Ρ†ΠΈΠΎΠ½Π½ΠΎΠΉ ΠΌΠΎΠ΄Π΅Π»ΠΈ ΠΌΡƒΠ»ΡŒΡ‚ΠΈΠΊΠ»ΠΈΠ΅Π½Ρ‚ΡΠΊΠΎΠ³ΠΎ кластСра Π±Π°Π· Π΄Π°Π½Π½Ρ‹Ρ…

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    One of the main trends of recent years in software design is a shift to a Software as a Service (SaaS) paradigm which brings a number of advantages for both software developers and end users. However, along with these benefits this transition brings new architectural challenges. One of such challenges is the implementation of a data storage that would meet the needs of a service-provider, at the same time providing a fairly simple application programming interface for software developers. In order to develop effective solutions in this area, the architectural features of cloud-based applications should be taken into account. Among others, such key features are the need for scalability and quick adaptation to changing conditions. This paper provides a brief analysis of the problems in the field of cloud data storage systems based on the relational model and it proposes the concept of database cluster designed for applications with a multi-tenant architecture. Besides, the article describes a simulation model of such a cluster, as well as the main stages of its development and the main principles forming its foundation.Одной ΠΈΠ· Π³Π»Π°Π²Π½Ρ‹Ρ… Ρ‚Π΅Π½Π΄Π΅Π½Ρ†ΠΈΠΉ послСдних Π»Π΅Ρ‚ Π² ΠΏΡ€ΠΎΠ΅ΠΊΡ‚ΠΈΡ€ΠΎΠ²Π°Π½ΠΈΠΈ ΠΏΡ€ΠΎΠ³Ρ€Π°ΠΌΠΌΠ½ΠΎΠ³ΠΎ обСспСчСния стал ΠΏΠ΅Ρ€Π΅Ρ…ΠΎΠ΄ ΠΊ ΠΏΠ°Ρ€Π°Π΄ΠΈΠ³ΠΌΠ΅ Software as a Service (SaaS), которая нСсСт ряд нСоспоримых прСимущСств ΠΊΠ°ΠΊ для ΠΊΠΎΠΌΠΏΠ°Π½ΠΈΠΉ-Ρ€Π°Π·Ρ€Π°Π±ΠΎΡ‚Ρ‡ΠΈΠΊΠΎΠ² ПО, Ρ‚Π°ΠΊ ΠΈ для ΠΊΠΎΠ½Π΅Ρ‡Π½Ρ‹Ρ… ΠΏΠΎΠ»ΡŒΠ·ΠΎΠ²Π°Ρ‚Π΅Π»Π΅ΠΉ. Однако вмСстС с этими прСимущСствами Π΄Π°Π½Π½Ρ‹ΠΉ ΠΏΠ΅Ρ€Π΅Ρ…ΠΎΠ΄ нСсСт ΠΈ Π½ΠΎΠ²Ρ‹Π΅ Π°Ρ€Ρ…ΠΈΡ‚Π΅ΠΊΡ‚ΡƒΡ€Π½Ρ‹Π΅ Π²Ρ‹Π·ΠΎΠ²Ρ‹, ΠΎΠ΄Π½ΠΈΠΌ ΠΈΠ· ΠΊΠΎΡ‚ΠΎΡ€Ρ‹Ρ… являСтся организация Ρ…Ρ€Π°Π½ΠΈΠ»ΠΈΡ‰Π° Π΄Π°Π½Π½Ρ‹Ρ…, ΠΊΠΎΡ‚ΠΎΡ€ΠΎΠ΅ ΠΌΠΎΠ³Π»ΠΎ Π±Ρ‹ ΡƒΠ΄ΠΎΠ²Π»Π΅Ρ‚Π²ΠΎΡ€ΠΈΡ‚ΡŒ Π½ΡƒΠΆΠ΄Ρ‹ ΠΊΠΎΠΌΠΏΠ°Π½ΠΈΠΈ-ΠΏΡ€ΠΎΠ²Π°ΠΉΠ΄Π΅Ρ€Π° услуг, обСспСчив достаточно простой ΠΏΡ€ΠΈΠΊΠ»Π°Π΄Π½ΠΎΠΉ интСрфСйс для Ρ€Π°Π·Ρ€Π°Π±ΠΎΡ‚Ρ‡ΠΈΠΊΠΎΠ². Для Ρ€Π°Π·Ρ€Π°Π±ΠΎΡ‚ΠΊΠΈ эффСктивного Ρ€Π΅ΡˆΠ΅Π½ΠΈΡ Π² Π΄Π°Π½Π½ΠΎΠΉ области слСдуСт ΠΏΡ€ΠΈΠ½ΠΈΠΌΠ°Ρ‚ΡŒ Π²ΠΎ Π²Π½ΠΈΠΌΠ°Π½ΠΈΠ΅ особСнности Π°Ρ€Ρ…ΠΈΡ‚Π΅ΠΊΡ‚ΡƒΡ€Ρ‹ ΠΎΠ±Π»Π°Ρ‡Π½Ρ‹Ρ… ΠΏΡ€ΠΈΠ»ΠΎΠΆΠ΅Π½ΠΈΠΉ, ΠΊΠ»ΡŽΡ‡Π΅Π²Ρ‹ΠΌΠΈ ΠΈΠ· ΠΊΠΎΡ‚ΠΎΡ€Ρ‹Ρ… ΡΠ²Π»ΡΡŽΡ‚ΡΡ ΠΏΠΎΡ‚Ρ€Π΅Π±Π½ΠΎΡΡ‚ΡŒ Π² простом ΠΌΠ°ΡΡˆΡ‚Π°Π±ΠΈΡ€ΠΎΠ²Π°Π½ΠΈΠΈ ΠΈ быстрой Π°Π΄Π°ΠΏΡ‚Π°Ρ†ΠΈΠΈ ΠΊ ΠΌΠ΅Π½ΡΡŽΡ‰ΠΈΠΌΡΡ условиям. Π’ Π΄Π°Π½Π½ΠΎΠΉ Ρ€Π°Π±ΠΎΡ‚Π΅ проводится ΠΊΡ€Π°Ρ‚ΠΊΠΈΠΉ Π°Π½Π°Π»ΠΈΠ· ΡΡƒΡ‰Π΅ΡΡ‚Π²ΡƒΡŽΡ‰ΠΈΡ… ΠΏΡ€ΠΎΠ±Π»Π΅ΠΌ Π² области ΠΎΡ€Π³Π°Π½ΠΈΠ·Π°Ρ†ΠΈΠΈ ΠΎΠ±Π»Π°Ρ‡Π½Ρ‹Ρ… систСм хранСния Π΄Π°Π½Π½Ρ‹Ρ…, основанных Π½Π° рСляционной ΠΌΠΎΠ΄Π΅Π»ΠΈ, Π° Ρ‚Π°ΠΊΠΆΠ΅ прСдлагаСтся концСпция кластСра Π Π‘Π£Π‘Π”, ΠΏΡ€Π΅Π΄Π½Π°Π·Π½Π°Ρ‡Π΅Π½Π½ΠΎΠ³ΠΎ для обслуТивания ΠΏΡ€ΠΈΠ»ΠΎΠΆΠ΅Π½ΠΈΠΉ с ΠΌΡƒΠ»ΡŒΡ‚ΠΈΠΊΠ»ΠΈΠ΅Π½Ρ‚ΡΠΊΠΎΠΉ Π°Ρ€Ρ…ΠΈΡ‚Π΅ΠΊΡ‚ΡƒΡ€ΠΎΠΉ. ΠšΡ€ΠΎΠΌΠ΅ Ρ‚ΠΎΠ³ΠΎ, Π² ΡΡ‚Π°Ρ‚ΡŒΠ΅ даСтся описаниС ΠΈΠΌΠΈΡ‚Π°Ρ†ΠΈΠΎΠ½Π½ΠΎΠΉ ΠΌΠΎΠ΄Π΅Π»ΠΈ ΠΏΠΎΠ΄ΠΎΠ±Π½ΠΎΠ³ΠΎ кластСра, Π° Ρ‚Π°ΠΊΠΆΠ΅ основных этапов Π΅Π΅ Ρ€Π°Π·Ρ€Π°Π±ΠΎΡ‚ΠΊΠΈ ΠΈ ΠΏΡ€ΠΈΠ½Ρ†ΠΈΠΏΠΎΠ², Π·Π°Π»ΠΎΠΆΠ΅Π½Π½Ρ‹Ρ… Π² Π΅Π΅ основу

    ΠŸΡ€ΠΈΠΌΠ΅Π½Π΅Π½ΠΈΠ΅ стохастичСских мСтаэвристик Π² Π·Π°Π΄Π°Ρ‡Π΅ управлСния Π΄Π°Π½Π½Ρ‹ΠΌΠΈ Π² ΠΌΡƒΠ»ΡŒΡ‚ΠΈΠΊΠ»ΠΈΠ΅Π½Ρ‚ΡΠΊΠΎΠΌ кластСрС Π±Π°Π· Π΄Π°Π½Π½Ρ‹Ρ…

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    A multi-tenant database cluster is a concept of a data-storage subsystem for cloud applications with the multi-tenant architecture. The cluster is a set of relational database servers with the single entry point, combined into one unit with a cluster controller. This system is aimed to be used by applications developed according to Software as a Service (SaaS) paradigm and allows to place tenants at database servers so that providing their isolation, data backup and the most effective usage of available computational power. One of the most important problems about such a system is an effective distribution of data into servers, which affects the degree of individual cluster nodes load and faulttolerance. This paper considers the data-management approach, based on the usage of a load-balancing quality measure function. This function is used during initial placement of new tenants and also during placement optimization steps. Standard schemes of metaheuristic optimization such as simulated annealing and tabu search are used to find a better tenant placement.ΠœΡƒΠ»ΡŒΡ‚ΠΈΠΊΠ»ΠΈΠ΅Π½Ρ‚ΡΠΊΠΈΠΉ кластСр Π±Π°Π· Π΄Π°Π½Π½Ρ‹Ρ… – это концСпция Ρ…Ρ€Π°Π½ΠΈΠ»ΠΈΡ‰Π° Π΄Π°Π½Π½Ρ‹Ρ… для ΠΎΠ±Π»Π°Ρ‡Π½Ρ‹Ρ… ΠΏΡ€ΠΈΠ»ΠΎΠΆΠ΅Π½ΠΈΠΉ с ΠΌΡƒΠ»ΡŒΡ‚ΠΈΠΊΠ»ΠΈΠ΅Π½Ρ‚ΡΠΊΠΎΠΉ Π°Ρ€Ρ…ΠΈΡ‚Π΅ΠΊΡ‚ΡƒΡ€ΠΎΠΉ. ΠšΠ»Π°ΡΡ‚Π΅Ρ€ прСдставляСт собой Π½Π°Π±ΠΎΡ€ сСрвСров рСляционных Π±Π°Π· Π΄Π°Π½Π½Ρ‹Ρ… с Π΅Π΄ΠΈΠ½ΠΎΠΉ Ρ‚ΠΎΡ‡ΠΊΠΎΠΉ Π²Ρ…ΠΎΠ΄Π°, ΠΎΠ±ΡŠΠ΅Π΄ΠΈΠ½Π΅Π½Π½Ρ‹Ρ… Π² ΠΎΠ΄Π½ΠΎ Ρ†Π΅Π»ΠΎΠ΅ ΠΈ Ρ€Π°Π±ΠΎΡ‚Π°ΡŽΡ‰ΠΈΡ… ΠΏΠΎΠ΄ ΡƒΠΏΡ€Π°Π²Π»Π΅Π½ΠΈΠ΅ΠΌ ΠΊΠΎΠ½Ρ‚Ρ€ΠΎΠ»Π»Π΅Ρ€Π° кластСра. Данная систСма Π½Π°Ρ†Π΅Π»Π΅Π½Π° Π½Π° использованиС прилоТСниями, Ρ€Π°Π·Ρ€Π°Π±Π°Ρ‚Ρ‹Π²Π°Π΅ΠΌΡ‹ΠΌΠΈ Π² соотвСтствии с ΠΏΠ°Ρ€Π°Π΄ΠΈΠ³ΠΌΠΎΠΉ Software as a Service (SaaS), ΠΈ позволяСт Ρ€Π°Π·ΠΌΠ΅ΡΡ‚ΠΈΡ‚ΡŒ Π½Π° прСдоставлСнных сСрвСрах Π΄Π°Π½Π½Ρ‹Π΅ большого количСства ΠΊΠ»ΠΈΠ΅Π½Ρ‚ΠΎΠ² Ρ‚Π°ΠΊΠΈΠΌ ΠΎΠ±Ρ€Π°Π·ΠΎΠΌ, Ρ‡Ρ‚ΠΎΠ±Ρ‹ ΠΎΠ±Π΅ΡΠΏΠ΅Ρ‡ΠΈΡ‚ΡŒ ΠΈΡ… ΠΈΠ·ΠΎΠ»ΡΡ†ΠΈΡŽ, Ρ€Π΅Π·Π΅Ρ€Π²ΠΈΡ€ΠΎΠ²Π°Π½ΠΈΠ΅ ΠΈ Π½Π°ΠΈΠ±ΠΎΠ»Π΅Π΅ эффСктивноС использованиС прСдоставлСнных Π²Ρ‹Ρ‡ΠΈΡΠ»ΠΈΡ‚Π΅Π»ΡŒΠ½Ρ‹Ρ… мощностСй. Одной ΠΈΠ· Π½Π°ΠΈΠ±ΠΎΠ»Π΅Π΅ Π²Π°ΠΆΠ½Ρ‹Ρ… Π·Π°Π΄Π°Ρ‡ ΠΏΡ€ΠΈ Ρ€Π°Π·Ρ€Π°Π±ΠΎΡ‚ΠΊΠ΅ систСмы ΠΏΠΎΠ΄ΠΎΠ±Π½ΠΎΠ³ΠΎ Ρ€ΠΎΠ΄Π° являСтся эффСктивноС распрСдСлСниС Π΄Π°Π½Π½Ρ‹Ρ… ΠΏΠΎ сСрвСрам, ΠΊΠΎΡ‚ΠΎΡ€ΠΎΠ΅ опрСдСляСт ΡΡ‚Π΅ΠΏΠ΅Π½ΡŒ загруТСнности ΠΎΡ‚Π΄Π΅Π»ΡŒΠ½Ρ‹Ρ… ΡƒΠ·Π»ΠΎΠ², Π° Ρ‚Π°ΠΊΠΆΠ΅ ΡƒΡΡ‚ΠΎΠΉΡ‡ΠΈΠ²ΠΎΡΡ‚ΡŒ систСмы ΠΊ сбоям. Π’ Ρ€Π°Π±ΠΎΡ‚Π΅ рассматриваСтся ΠΏΠΎΠ΄Ρ…ΠΎΠ΄ ΠΊ ΡƒΠΏΡ€Π°Π²Π»Π΅Π½ΠΈΡŽ Π΄Π°Π½Π½Ρ‹ΠΌΠΈ, основанный Π½Π° ΠΏΡ€ΠΈΠΌΠ΅Π½Π΅Π½ΠΈΠΈ Ρ„ΡƒΠ½ΠΊΡ†ΠΈΠΈ ΠΎΡ†Π΅Π½ΠΊΠΈ эффСктивности балансировки Π½Π°Π³Ρ€ΡƒΠ·ΠΊΠΈ. Данная функция примСняСтся ΠΊΠ°ΠΊ ΠΏΡ€ΠΈ ΠΏΠ΅Ρ€Π²ΠΈΡ‡Π½ΠΎΠΌ Ρ€Π°Π·ΠΌΠ΅Ρ‰Π΅Π½ΠΈΠΈ ΠΊΠ»ΠΈΠ΅Π½Ρ‚ΠΎΠ², Ρ‚Π°ΠΊ ΠΈ для ΠΎΠΏΡ‚ΠΈΠΌΠΈΠ·Π°Ρ†ΠΈΠΈ ΡƒΠΆΠ΅ ΠΈΠΌΠ΅ΡŽΡ‰Π΅Π³ΠΎΡΡ распрСдСлСния ΠΊΠ»ΠΈΠ΅Π½Ρ‚ΠΎΠ². ΠžΠΏΡ‚ΠΈΠΌΠΈΠ·Π°Ρ†ΠΈΡ размСщСния вСдСтся ΠΏΠΎ стандартным схСмам стохастичСских мСтаэвристик: ΠΈΠΌΠΈΡ‚Π°Ρ†ΠΈΠΈ ΠΎΡ‚ΠΆΠΈΠ³Π° (simulated annealing) ΠΈ поиска с Π·Π°ΠΏΡ€Π΅Ρ‚Π°ΠΌΠΈ (tabu search)

    Possibilities of dispensary observation in reducing mortality from coronary heart disease

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    Dispensary observation of patients with coronary artery disease can significantly reduce the likelihood of cardiovascular complications onset. Active outpatient monitoring allows to correct the main risk factors for cardiovascular complications, to estimate the risk of unfavorable cardiovascular events onset and to identificate patients who will get benefit of coronary revascularization. The introduction of a comprehensive assessment of cardiovascular risk and the development of remote monitoring technologies will improve the long-term results of outpatient follow-up of patients with coronary artery disease at high cardiovascular risk

    Enriching a Situation Awareness Framework for IoT with Knowledge Base and Reasoning Components

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    Theimportanceofsystem-levelcontext-andsituationaware- ness increases with the growth of the Internet of Things (IoT). This paper proposes an integrated approach to situation awareness by providing a semantically rich situation model together with reliable situation infer- ence based on Context Spaces Theory (CST) and Situation Theory (ST). The paper discusses benefits of integrating the proposed situation aware- ness framework with knowledge base and efficient reasoning techniques taking into account uncertainty and incomplete knowledge about situa- tions. The paper discusses advantages and impact of proposed context adaptation in dynamic IoT environments. Practical issues of two-way mapping between IoT messaging standards and CST are also discussed

    Prospects for development of initiative budgeting in mobilization economy

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    In modern Russia, the initiative budgeting mechanism has been developing systematically since 2015. The practice has been launched in 51 out of 85 constituent entities of the Russian Federation. This phenomenon is an urgent topic for research, in connection with its priority for the state as one of the important directions for the openness of the budget system development and degree of citizens’ satisfaction with the results of the budget policy improvement. The purpose of this study is to analyze the possibilities of the initiative budgeting practice development in the mobilization economy, which, apparently, for a certain time will become the main model of economic development in Russia. Such general scientific methods of research as comparison, analysis, statistics, and induction were used in the article. The study concludes that the initiative budgeting should be developed in the current state of the Russian economy as the social and managerial positive effects exceed the possible costs of the suspension of the practice

    SberQuAD – Russian Reading Comprehension Dataset: Description and Analysis

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    The paper presents SberQuAD – a large Russian reading comprehension (RC) dataset created similarly to English SQuAD. SberQuAD contains about 50K question-paragraph-answer triples and is seven times larger compared to the next competitor. We provide its description, thorough analysis, and baseline experimental results. We scrutinized various aspects of the dataset that can have impact on the task performance: question/paragraph similarity, misspellings in questions, answer structure, and question types. We applied five popular RC models to SberQuAD and analyzed their performance. We believe our work makes an important contribution to research in multilingual question answering. Β© 2020, Springer Nature Switzerland AG.We thank Peter Romov, Vladimir Suvorov, and Ekaterina Arte-mova (Chernyak) for providing us with details about SberQuAD preparation. We also thank Natasha Murashkina for initial data processing. PB acknowledges support by Ural Mathematical Center under agreement No. 075-02-2020-1537/1 with the Ministry of Science and Higher Education of the Russian Federation

    Reasoning over Knowledge-based Generation of Situations in Context Spaces to Reduce Food Waste

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    Abstract. Situation awareness is a key feature of pervasive computing and requires external knowledge to interpret data. Ontology-based reasoning approaches allow for the reuse of predefined knowledge, but do not provide the best reasoning capabilities. To overcome this problem, a hybrid model for situation awareness is developed and presented in this paper, which integrates the Situation Theory Ontology into Context Space Theory for inference. Furthermore, in an effort to rely as much as possible on open IoT messaging standards, a domain-independent framework using the O-MI/O-DF standards for sensor data acquisition is developed. This framework is applied to a smart neighborhood use case to reduce food waste at the consumption stage
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