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(1) Background--The following problems generally exist in the researches of forestry economy at present : advocating tool-oriented research methods and complexity of research processes and ignoring problem-oriented research methods and purpose-first research processes; Seeking the black-box analysis of "literatures + software" and avoiding the actual system structures and mechanism analysis ; Coping with the complexity of the changing research objects and its environments with rigid procedures. These practices make academic researches divorced from practical needs and far from the solution of scientific problems, and meanwhile they also imprison the formation of academic ideas and the production of innovation achievements. (2) Methods--It is a good solution to study forestry economy by using the thoughts and methods of system engineering. First, set up the system view of forestry economy, deeply understand the specific attributes and movement laws of forestry economy system. Then, analyze the problems of forestry economy by using the general theory of system science and the general methods of system analysis, study the specific system attributes of forestry economy system such as its purpose, structure and function, and establish the whole model of the system view of forestry economy. (3) Results--In the aspect of system structure, the aggregation, relevance and hierarchy of forestry economic system are studied. It studies the transitive hierarchy by taking the ecological footprint systems of national parks as an example, studies the resolving hierarchy by taking the forestry industry systems as an example, and studies the mixed hierarchy by taking the production systems of forestry enterprises as an example. In the aspect of system function, it studies the integrality marked by the combination effect of forestry ecological economy, the dynamics featured by the significant hysteresis effect of "ten years to grow trees", and the self-organization as the internal driving force of sustainable development. Meanwhile, it also studies the openness as a bridge between forest ecosystems and socio-economic systems, the environmental adaptability towards forest ecosystems and the environmental adaptability towards socio-economic systems. In the aspect of system purpose, by using the whole model and feedback mechanism of forestry economic system, it studies the resolving methods of the system purpose based on the system function effect feedback and establishes the resolving system of "function→purpose" which takes the green development of forestry economy as the overall purpose. (4) Proposals--Forestry economic system has three kinds of attributes : purpose, structure and function. Among them, the system structure includes three aspects : aggregation, relevance and hierarchy. According to its proximity to the external environment, the system function can be divided into inner function and outer function. The inner function includes integrality, dynamics and self-organization of the system, while the outer function includes openness and environmental adaptability. The research shows that the system purpose of forestry economic system determines the structure and function of the system, and the system function embodies the order and ability of the interaction between the system and the environment, and the effects of this interaction in turn improve the purpose, structure, and function of the system through its organization and self-organization processes. It can be seen that each attribute of forestry economic system interacts with each other and forms a feedback system. It not only explains the general principles of the forestry economic system, but also provides useful enlightenment for the study of the system structures and operation mechanisms of various specific forestry economic problems, which is helpful to solve various complicated problems in the development of China's forestry economy. [ABSTRACT FROM AUTHOR]

In order to solve the problems that “there is a system but not fine, there is a structure but absence, there is a system but absence, there is responsibility but not clear” in coal mine safety production technology management, the principles and components of technology management system construction was proposed, the research establishes the “135” coal mine safety production technology management system architecture with the chief engineer as the core, the group, the subsidiary(sub-company) and the coal mine as the focus, supported by the chief engineer of each level, the deputy chief engineer of each specialty and the technical department, business contact department and administrative cooperation department directly managed by the chief engineer. The division of responsibilities of production safety technology management has been clarified, and safeguard measures have been proposed from the aspects of organizational leadership, human resources construction, financial guarantee, professional training and standard system construction. The construction of coal mine safety production technology management system can provide technical support for promoting high quality development of coal enterprises.

The time-frequency system has become national strategic resource.The application of time-frequency scientific data is related to communications, electricity, transportation, warfare, etc.It has important practical significance for the sorting, management control, and application analysis of time-frequency scientific data.Firstly, the classify and data sharing strategies of time-frequency scientific data were proposed, the detail of the structure about the time-frequency scientific data center management system and the quality control methods of time-frequency scientific data were discussed.Then the problems faced by the open sharing of time-frequency scientific data were analyzed and the solutions were given.Finally, several application directions of time-frequency scientific data were explained, and the management of time-frequency scientific data was summarized and prospected.

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In this paper, based on the requirement of military integrated information systems and the characteristic of cloud computing, we design a model of platform. This model combines the cloud platform OpenStack, the large data processing framework Spark, in-memory-database and other latest tools, and then the ablity of high scalability and computing of the model is proved, by the testing of data service permornace and scalability. Expermimental results show that the model can meet the requriments of large scale data storage, processing and service in the future battlefield.

A representative hardware-in-the-loop simulation system was established for the mixed separation process to meet the demands of industrial process control technologies with complex characteristics. A hardware-in-the-loop simulation system was developed composed of a virtual object computer, a controller-design computer, a monitoring computer, virtual actuators, virtual detecting instruments, and a control system to achieve mixed separation. The control algorithm of the system was based on actual industrial software, and Matlab was use to design the virtual object, virtual actuators, virtual detecting instruments, and online identification system. The mechanism modeling of controlled object, parameter identification of controller design model, controller design and controller performance evaluation were completed on the virtual object computer, controller-design computer and monitoring computer. The proposed system lays the foundation for future industrial applications of control algorithms for complex industrial processes.

Copyright of Chinese Medical Equipment Journal is the property of Chinese Medical Equipment Journal Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Data Acquisition & Processing / Shu Ju Cai Ji Yu Chu Li is the property of Editorial Department of Journal of Nanjing University of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

At present, the application of Internet of things (IOT) in the field of agriculture is on the rise. As a new driving force for transformation and upgrading of traditional agriculture to modern agriculture, IOT is a necessary condition for agricultural information and intelligence. Taking the system structure of agricultural IOT as thread, this paper systematically reviewed the research status of agricultural IOT. Firstly, starting from the development of agricultural IOT, this paper summarized and extracted its system structure, and discussed 4 key technologies in detail, respectively. Then, the paper introduced the application status of agricultural IOT in 4 representative fields. Finally, by analyzing the existing problems of agricultural IOT, the future research focus and development trend were forecasted. [ABSTRACT FROM AUTHOR]

Copyright of Natural Gas Industry is the property of Natural Gas Industry Journal Agency and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Super network which is a special complex network is introduced to model and analyze the network-centric C4ISR structure in this paper. Based on the analyzing of the super network characters of the network-centric C4ISR structure, two modeling methods of the C4ISR structure based on the super network are present, which are based on the idea of "topology" and "time-series" respectively, and then two application assumptions of the C4ISR structure which based on two previous ideas are present respectively, and the simulations to a part of application assumptions are analyzed at last. The super network models and the application assumptions are also valuable to the further study of the system structure. [ABSTRACT FROM AUTHOR]

The ground power supply for aircrafts based on independent structure has many shortcomings such as vast numbers of ground power units, difficult administration and maintenance, high cost and low utilization rate. This paper proposes the design requirements and design method of centralized ground power supply for aircrafts based on 400 Hz electric power system. The key technical problems are discussed such as the structure and functions of the proposed 400 Hz electric power system, the voltage class of busbar, the power distribution structure and the load flow analysis. Taking the Terminal 1 of Shanghai Pudong International Airport for example, this paper analyzes the structure and key parameters of 400 Hz centralized power supply system. The practical calculation and simulation results illustrate the rationality of the structure and parameter design. The results also indicate the feasibility of the centralized ground power supply based on 400 Hz electric power system, because it can guarantee the reliability and quality of power supply, reduce the cost, and improve the flexibility of power supply and the utilization rate of installations. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Capital Institute of Physical Education is the property of Shoudu Tiyu Xueyuan and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Computer Measurement & Control is the property of Magazine Agency of Computer Measurement & Control and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Different from traditional antenna design methods, the new system structure of smart skin antennas is proposed, and the key technique realizations of smart skin antennas are discussed. The beam self-adapting of smart skin antennas is realized based on the reconfiguration technique in RF-layer and signal processing method in back-end, and the limit of traditional antenna by using only signal processing method is overcome. And then, the realizing methods of packaging layer, RF-layer, and controlling and signal processing layer are analyzed in detail. Finally, according to the application requirements for future aero-craft, the key techniques and design methods of smart skin antennas are presented. [ABSTRACT FROM AUTHOR]

Tourism industry is an industry closely linked to geographical space. Studying the formation and evolution of tourism system that is within certain regional space and periodic features displayed in its structure and function, from the perspective of geography science, has an important role in promoting the development of regional tourism industry. Based on the definition of tourism regional system, the paper makes a systematic retrospect of the relevant literature about the evolution of tourism regional system both at home and abroad from the following aspects ; spatial distribution of tourist flow and concentration-diffusion effect, space structure, evolutional patterns and mechanism of tourism system. Defects existing in the present studies and study trend are put forward in the hope of providing some useful reference for the study of sustainable development of regional tourism [ABSTRACT FROM AUTHOR]

There has been a basic law about present legal aids matters. With the implementation of the law i. e. "The Decision on the Problems about Expert Testimony Management" made by CPC, there have been a lot of changes on expert testimony management system. In order to adapt to these changes, the foundation of expert testimony legal aid system is needed badly. The mould of the expert testimony legal aids system in China should be in the middle of the moulds between the national welfare mould and society-oriented mould. Definite regulars should be made to the legal principal body and conditions and objects of the expert testimony legal aids. [ABSTRACT FROM AUTHOR]

For the researches relating to the biomedical fields such as preparation of drug micro-particulates and biomedical materials coating, according to the modular design concept and combing the piezoelectric micro-jetting technology with electromechanical engineering and automatic control technology, the drug micro-jetting multifunctional system was designed, which included the spraying support subsystem, X - Y motion platform, Z -axis subsystem and rapid installation subsystem. The drug micro-jetting multifunctional system was run and adjusted. The versatility, rationality and feasibility of this system were validated by the experiments of amoxicillin microcapsule preparation, titanium alloy drug-loaded coating preparation and balloon electrode coating preparation. It was shown that the system can be used as basic platform in multi-disciplinary cross technology research such as biomedical engineering, pharmaceutical engineering and so on.