2,398 research outputs found
Implementing cognitive architecture plan-image to search tasks in agent models
In the article we discuss some questions connected with cognitive structures and behavior algorithms of an artificial social agent. We suggest a cognitive Plan-Image architecture that is based on the concepts of TOTE model by Miller, Galanter and Pribra
Information support system for regional human resource development
In paper suggest a concept of information support system for human resource management at a regional level. We identify the main factors that affect quantitative and qualitative characteristics of regional human resource, including educational system, demographic and migration processes, and present a concept of the Program for its development. As a tool for information support of the Program propose a distributed information system with interfaces for various groups of users: regional administration, population and organization
Triple molybdates one-, one - and three(two)valence metals
The authors thank Ph. D. M. K. Alibaeva, Ph. D. I. A. Gudkova and Ph. D. I. V. Korolkova for participation in the research.The review summarizes experimental data on the phase formation, structure and properties of new complex oxide compounds group - triple molybdates containing tetrahedral molybdate ion, two different singly charged cation, together with tri- or divalent cation. The several structural families of these compounds were distinguished and it shown that many of them are of interest as luminescent, laser, ion-conducting or nonlinear optical materials.The work is executed at partial support of the Russian Foundation for basic research (projects No. 08-03-00384, 13-03-01020 and 14-03-00298)
Simulating budget system in the agent model of the Russian Federation spatial development
In this paper we present methods, data and algorithms for simulating budget system in the model of the Russian Federation spatial development. We show the place of this task in methodology of our research and give a brief overview of the background results. We determine revenues and expenditures of the budgets and funds on the basis of federal laws, Budget and Tax codes of the Russian Federation. For validation of the budget system algorithms in the model we conduct retrospective modeling for the federal budget and the budget of Belgorod region in 201
Integrating Artificial Agent in the Simulation Model of the Russian Federation Spatial Development
In this paper present a model of spatial development of the Russian Federation and principles of integrating artificial agents into it. The model is agent-based and consists of several modules, representing demographic, economic, financial processes, employment and consumption, educational and administrative institution
СУЧАСНІ ТЕНДЕНЦІЇ РОЗВИТКУ ФОНДОВОГО РИНКУ УКРАЇНИ
The article is devoted to the analysis of the modern stock market in Ukraine. In terms of maturity and risks, the Ukrainian stock market belongs to the emerging stock markets and has the potential for integration into the global stock market due to many factors. These include a significant number of joint-stock companies with dynamically growing capitalization, functioning e-commerce systems, the existing infrastructure of the Ukrainian stock market corresponds to a similar structure of the stock markets of developed countries, and the internal investment demand for stock market instruments is slowly but constantly being formed. In general, the analysis showed that the stock market of Ukraine has a very low level of development, the number of instruments offered on the market is limited, and the stock market does not fulfill its basic function of attracting financial resources by issuers on it. All this significantly affects the capital structure of domestic enterprises, since they have limited opportunities to enter the stock market and manage such a structure by issuing shares and bonds of enterprises.Analysis of the professional training system for specialists in the stock market and supervision indicates a certain immutability of the market for specialists in the stock market, which, in our opinion, is rather a negativefactor, because it states a kind of «stagnation» of the stock market. To improve the situation and develop the domestic stock market, it is necessary to complete the formation of a progressive regulatory framework, strengthen the information campaign among the population about the advantages and possibilities of investing in the stock market, develop the existing and introduce new tools in the stock market. Статья посвящена анализу современного фондового рынка Украины. По степени зрелости и рискам фондовый рынок Украины относится к развивающимся фондовым рынкам и имеет потенциал для интеграции в мировой фондовый рынок благодаря многим факторам. К ним можно отнести значительное количество акционерных компаний с динамично растущей капитализацией, функционирующие системы электронной торговли, существующая инфраструктура фондового рынка Украины соответствует аналогичной структуре фондовых рынков развитых стран, медленно, но постоянно формируется внутренний инвестиционный спрос на инструменты фондового рынка. В целом анализ показал, что фондовый рынок имеет очень низкий уровень развития, количество предлагаемых на рынке инструментов ограничено, фондовый рынок не выполняет своей базовой функции по привлечению эмитентами финансовых ресурсов на нем. Все это существенно влияет на структуру капитала отечественных предприятий, поскольку они имеют ограниченные возможности выхода на фондовый рынок и управления такой структурой посредством эмиссии акций и облигаций предприятий.Анализ системы профессиональной подготовки специалистов по вопросам фондового рынка и надзора свидетельствует об определенной неизменяемости рынка специалистов по вопросам фондового рынка, что, по нашему мнению, является скорее негативным фактором, ведь констатирует своеобразный «застой» фондового рынка.Для улучшения ситуации и развития отечественного фондового рынка следует завершить формирование прогрессивной нормативной базы, усилить информационную кампанию среди населения о преимуществах и возможностях вложения средств в фондовый рынок, развивать существующий и внедрить новый инструментарий на фондовом рынке.У статті розглянуто особливості функціонування фондового ринку України. Досліджено, що за останні роки вітчизняний фондовий ринок має суперечливі тенденції розвитку. Загальні обсяги випусків емісійних цінних паперів на фондовому ринку та обсяги випусків акцій протягом досліджуваного періоду скоротились, проте обсяги випусків облігацій значно зросли. Наведено основні проблеми функціонування фондового ринку України, а також запропоновані основні напрями його розвитку
ПІДПРИЄМНИЦТВО ТА ІНВЕСТИЦІЙНА ДІЯЛЬНІСТЬ В УКРАЇНІ В УМОВАХ КАРАНТИННИХ ОБМЕЖЕНЬ
The article considers the impact of the COVID-19 coronavirus pandemic as the most important factor of medium- and long-term changes on the development of entrepreneurship and investment activity not only in Ukraine but also in the world.It is clarified that due to the introduction of forced measures to limit certain activities in connection with quarantine, the business sector suffers the greatest losses, which plays a crucial role in the accumulation of crisis processes in the economy, including the pre-default state of business entities. As a result of quarantine, many Ukrainian companies have frozen investments and production chains, however, sectors that are related to consumer demand (retail and services) are recovering fairly quickly.The outbreak of the coronavirus pandemic caused the fall of the world economy, trade and commodity prices, and the outflow of capital from new market economies. The World Bank expects a deep decline in almost all of Ukraine’s major trading partners, which could negatively affect the domestic economy. Investment, in particular, collapsed in 2020 in many emerging market and developing economies, following a decade of persistent weakness. Investment growth is expected to resume in 2021, but, despite an uplift from advances in digital technology, not add enough to reverse the large 2020 decline. The experience of past crises raises a further concern – without urgent course correction, investment could remain feeble for years to come.It was found that Ukraine has entered the current economic crisis witha balanced macroeconomic situation. The relatively low incidence of COVID-19 in most regions has made it possible to gradually lift quarantine restrictions, but the scale of the decline in economic activity in 2020 is already significant. The main risks to Ukraine’s economy have been identified, including the cessation of cooperation with the IMF, thecurtailment of structural reforms, and the prolongation of the coronaviruspandemic, while maintaining restrictive measures for a longer period.It is substantiated that the lack of adaptive state support in Ukrainemay lead to a reduction of almost a third of gross value added, employment and tax revenues from this segment.В статье рассмотрено влияние пандемии коронавируса COVID-19,как наиболее весомого фактора средне- и долгосрочных изменений на развитие предпринимательства и инвестиционной деятельности вУкраине. Уточнено, что в результате введения вынужденных мер поограничению отдельных видов деятельности в связи с карантином,сектор предпринимательства испытывает наибольшие убытки, что играет решающую роль в накоплении кризисных процессов в экономике, в том числе – переддефолтного состояния субъектов бизнеса.Обосновано, что отсутствие адаптивной государственной поддержки вУкраине может привести к сокращению почти на треть валовойдобавленной стоимости, занятости и налоговых поступлений от этогосегмента.У статті розглянуто вплив пандемії коронавірусу COVID-19 як найбільш вагомого чинника середньо- та довгострокових змін на розвиток підприємництва та інвестиційної діяльності в Україні. Уточнено, що внаслідок запровадження вимушених заходів щодо обмеження окремих видів діяльності у зв’язку із карантином, сектор підприємництва зазнає найбільших збитків, що відіграє вирішальну роль у нагромадженні кризових процесів в економіці, в тому числі, – переддефолтного стану суб’єктів бізнесу. Обґрунтовано, що відсутність адаптивної державної підтримки в Україні може призвести до скорочення майже на третину валової доданої вартості, зайнятості та податкових надходжень від цього сегменту
Rendu-Osler-Weber Disease with High Pulmonary Hypertension and Interstitial Lung Disease
A 64-year-old female with a family history of hereditary hemorrhagic telangiectasia (HHT) was hospitalized due to complaints of dyspnea during light physical exertion and leg edema. HHT was diagnosed at 20 y.o., recurrent nasal bleeding started at age 52, bleedings severity was aggravated by not completely compensated hypertension. At the age of 60, after a massive hemorrhage, she noted the onset of dyspnea, edema, ascites. Diuretics and iron preparations improved her well-being, but from that period onward her heart failure worsened after each massive blood loss. The last major bleeding was before the present hospitalization (Hgb 67 g/l), after which heart failure symptoms significantly deteriorated. Echocardiography showed preserved left ventricular ejection fraction, but revealed high pulmonary hypertension (systolic pulmonary artery pressure 69 mmHg). Chest computed tomography (CT) with contrast showed no evidence of pulmonary embolism, but interstitial lung lesions were detected. Pulse therapy with glucocorticosteroids did not result in positive dynamics at the control CT scan, which allowed to reject a separate interstitial lung disease. As a result of cardiotropic and diuretic therapy, as well as correction of anemia, the patient's condition improved. Macitentan was administered, but the patient refused from it because one of possible side effects was anemia. A year later the patient diedfrom acute progression of pulmonary hypertension. According to the literature, pulmonary hypertension in HHT can have a significant impact on the prognosis and requires timely diagnosis and treatment. Interstitial lung lesions are a manifestation of the underlying disease and does not require special treatment
Magnetic properties of the antiferromagnetic spin-1/2 chain system -TeVO
The magnetic susceptibility and magnetization of high quality single crystal
beta-TeVO4 are reported. We show that this compound, made of weakly coupled
infinite chains of VO5 pyramids sharing corners, behaves as a S = 1/2
one-dimensional Heisenberg antiferromagnet. From magnetic experiments we deduce
the intrachain antiferromagnetic coupling constant J/kB = 21.4 0.2 K.
Below 5 K a series of three phase transitions at 2.26, 3.28 and 4.65 K is
observed.Comment: Accepted for publication in Physical Review
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