Astronomical data analysis depends on the accumulation of data, including integrity of data in observing location, time, and diversity of data. We are now developing a reorganization project of solar physics history data of China. There are 90 years, 44 kinds of solar observing data in China. In the project, we will finish imagination, digitalization and standardization of these data. This article introduces the project framework, data, data processing, and how to share.
KEYWORDS: Magnetism, Space telescopes, Autoregressive models, Solar radiation models, Telescopes, Data modeling, Magnetism, Solar processes, Data centers, Astronomy, Observatories
The Sun is the source of space weather. The characteristics and evolution of the solar active-region magnetic field closely relate to violent solar eruptions such as flares and coronal mass ejections. The Solar Magnetic Field Telescope in Huairou Solar Observing Station has accumulated numerous vector magnetogram data of solar photospheric active regions (AR) covering nearly 30 years. Utilizing these precious historical data to establish statistical prediction models for solar eruptive events, not only can provide a reference for the timely adjustment of observation mode to specific active regions, but also can offer valuable reference to the monitoring and forecasting departments of solar and space weather. In this part of work, we focus on the Yes/No and occurrence time predictions for AR-related solar flares, and the predictions independently rely on the vector magnetic-filed observation of the solar surface.
KEYWORDS: Magnetism, Solar processes, Autoregressive models, Image processing, Solar radiation models, Solar energy, Data processing, Curium, Astronomy, Spatial resolution
Intense solar active events have made significant impacts on the modern high technology system and living environment
of human being, therefore solar activities forecast and space weather forecast are getting more and more attention.
Meanwhile, data volume acquisitioned by solar monitor facility is growing larger and larger due to the requirement of
multiple dimensions observation and high temporal and spatial resolution. As staffs of a solar monitor data producer, we
are encouraged to adopt new techniques and methods to provide valuable information to solar activities forecast
organization and the other related users, and provide convenient products and tools to the users. In the previous paper “A
complete solar eruption activities processing tool with robotization and real time (I)”, we presented a fully automatic and
real time detecting architecture for different solar erupt activities. In this paper, we present new components of new data
sets in the architecture design, latest progresses on automatic recognition of solar flare, filament and magnetic field, and
a newly introduced method with which solar photospheric magnetic nonpotentiality parameters are processed in real
time, then its result directly can be used in solar active forecast.
The demands or cases of forecasts or researches on solar eruption activities are considered. Based on these demands and
based mainly on the observing data of Huairou Solar Observing Station, function architecture of a complete solar
eruption activities processing tool with robotization and real time is designed, kernel implement method for the
processing tool is analysed and support function library is designed, a pattern that benefits user use and a pattern that
benefits the tool software extensions are presented finally.
KEYWORDS: Network security, Computer security, Local area networks, Information security, Computing systems, Network architectures, Operating systems, Internet, Windows 2000, Defense and security
All data are provided by Huairou Solar Observing Station (HSOS), Beijing, China, a main observation station that is
designed to predicate solar activities and space environment in China. With the more and more complicated Internet
environment, many security issues arise, such as viruses, attacks to potential security weakness in the network protocol,
improperly using operation systems within a network etc., we have to design a more secure and reliable network
architecture in order to implement remote functionalities to meet the demands of the data users: automatic data
transmission, remote observation, control and maintenance of various systems. In this article, the author presents a real
case discussing various aspects while implementing it, that includes a new network topology changed from an original
architecture to a more secure one, the selections of the secure products, secure strategies deployment, the problems
encountered during operation and the solutions in use at HSOS. The article also gives some inputs from the author's
experiences of the network security. The case is implemented in the entire observing station, which includes multiple
observing systems, at HSOS.
In this paper we summary and present our thinking and experience in setting up a PC cluster, with a consideration that the described thinking and experience may be relevant to or useful for those who intend to buy a similar cluster in the near future.
Video Vector Magnetograph at Huairou Solar Observing Station, in Beijing of China is the primary instrument designed to simultaneously measure the solar 2-dimension magnetic field and velocity field with different spectral lines in the world. In order to satisfy needs from various users, raw data, received from the observations system is processed into CD-ROMs for archive and distribution to the Co-Investigators, and summary data is generated for viewing at the HSOS Web site (http://sun.bao.ac.cn) The data archive is designed to store in two parts for the sake of safe, one part is located at the local, the other is at headquarter of National Astronomical Center of Observatories. The data archive system is setup here. This paper presents a preliminary design and preliminary implement of the data archive system. The goal of this project is to provide a high efficient, fast speed and extensible software that is characterized by lower cost and high performance and a desire to create high quality software system. The article will encompass a wide variety of experiments associated with the inception and prototype stages to its current state of maturity of the database system, its relative integrality of the means and tools employed on a series of implement steps on operating system, database management system, and server end scripting language, etc. The solution offers significant performance improvements over some existing methods in similar system. The gained experiments all are in Linux system of PC. Everyone, who follows along with the steps described herein, must build a good online database server in a short time.
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