Waiting time distribution of solar energetic particle events modeled with a non-stationary Poisson process

We present a study of the waiting time distributions (WTDs) of solar energetic particle (SEP) events observed with the spacecraft $WIND$ and $GOES$. Both the WTDs of solar electron events (SEEs) and solar proton events (SPEs) display a power-law tail $\sim \Delta t^{-\gamma}$. The SEEs display a broken power-law WTD. The power-law index is $\gamma_{1} =$ 0.99 for the short waiting times ($$100 hours). The break of the WTD of SEEs is probably due to the modulation of the corotating interaction regions (CIRs). The power-law index $\gamma \sim$ 1.82 is derived for the WTD of SPEs that is consistent with the WTD of type II radio bursts, indicating a close relationship between the shock wave and the production of energetic protons. The WTDs of SEP events can be modeled with a non-stationary Poisson process which was proposed to understand the waiting time statistics of solar flares (Wheatland 2000; Aschwanden $\&$ McTiernan 2010). We generalize the method and find that, if the SEP event rate $\lambda = 1/\Delta t$ varies as the time distribution of event rate $f(\lambda) = A \lambda^{-\alpha}exp(-\beta \lambda)$, the time-dependent Poisson distribution can produce a power-law tail WTD $\sim \Delta t^{\alpha - 3}$, where $0 \leq \alpha < 2$.Comment: 10 pages, 4 figures, accepted for publication in ApJ Letter

Использование интернет-технологий для активизации процесса развития въездного туризма в РФ (на примере Томской области)

РЕФЕРАТ Объем работы – 102., рисунков – 7 , таблиц – 2, источников –61 . ИСПОЛЬЗОВАНИЕ ИНТЕРНЕТ ТЕХНОЛОГИЙ ДЛЯ АКТИВИЗАЦИИ ПРОЦЕССА РАЗВИТИЯ ВЪЕЗДНОГО ТУРИЗМА В РФ (НА ПРИМЕРЕ ТОМСКОЙ ОБЛАСТИ) Ключевые слова: интернет – технологии, туризм, въездной туризм, порталы. Актуальность Предмет исследования – исследования является интернет-технологии для повышения привлекательности региона для туристов. Объект исследования – интернет технологии. Проблему исследования Цель данной работы – исследования заключается в разработке предложений по совершенствованию туристского портала томской области. Для достижения поставленной цели определены следующие задачи: • Дать понятие и рассмотреть интернет технологии; • Рассмотреть состояние въездного туризма в зарубежных странах; • ПESSAY Volume of work - 102, figures - 7, tables - 2, sources -61. USING INTERNET TECHNOLOGY TO ENHANCE THE PROCESS OF DEVELOPMENT OF TOURISM IN THE RUSSIAN FEDERATION (THE EXAMPLE OF THE TOMSK REGION) Keywords: Internet - technology, tourism, inbound tourism portals. Relevance Subject of research - the study is an Internet-based technologies to enhance the attractiveness of the region for tourists. The object of study - Internet technology. research problem The purpose of this work - the research is to develop proposals for improving the tourist portal of the Tomsk region. To achieve this goal the following tasks: • Writing the concept and consider the Internet technology; • Consider the state of tourism in foreign countries; • Analyze the impact of Internet technology on the inbound t

Anomaly Detection and Prediction Based on Holt-Winters Method

Outliers, detection and prediction of abnormal periods, and prediction of trends in a given time base on existing data are the first problems to be solved in intelligent operation and maintenance. This paper took KPI performance index of 58 cells covered by 5 base stations from August 28 to September 25, 2021 as research data, chose 3 indexes (average number of users, PDCP traffic and average activation number), established a set of outlier prediction system based on Holt-Winters method

The growth in time of higher Sobolev norms of solutions to Schrödinger equations on compact Riemannian manifolds

AbstractIn this paper, we shall estimate the growing speed for higher Sobolev norms of the solutions to Schrödinger equations on Riemannian manifolds (d⩾2), under some bilinear Strichartz estimate assumptions

Power Factor Correction Modulated Wireless Power Transfer System With Series-Series Compensation

Power factor correction (PFC) is usually realized with a boost converter in a traditional power converter. This paper introduces a PFC modulated WPT method which can realize PFC function through phase-shift modulation of the primary-side inverter of a series-series (SS) WPT system. A close-loop control method of the phase-shift modulated system is also proposed for practical implementations. Without using a PFC converter, the structure of a WPT system can be simplified. Theoretical analysis and experimental results are provided to verify the idea