The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
A teaching program for emotional experience teaching methodology is drawn up regarding the emotional experience of students in the process of tennis teaching, and a model of teaching has been constructed in this paper to carry out the teaching tactics developed in emotional experience teaching methodology. The study reveals that the application of emotional experience in tennis teaching may help students...
To investigate the neural activity corresponding to different cognitive states, it is of great importance to localize the cortical areas that are associated with task-related modulation. In this paper, we propose a novel discriminant pattern source localization (DPSL) method to analyze MEG data. Unlike most traditional source localization methods that aim to find “dominant” sources, DPSL is developed...
In the conventional direct torque control (DTC) using space-vector modulation (SVM) of induction machine (IM) drives, at least three current sensors are needed. In this paper, a low-cost SVM-DTC strategy is proposed, in which only single current sensor is used. The position of voltage space vector is divided into two areas: effective and non-effective area. If it is located in the non-effective area,...
The researChes in the thesis are mainly focused on the concept and features of digital agriculture. People make a analysis on the relationship between digital agriculture and new countryside construction, pointing out the main problems in the process of digital agriculture development and the countermeasures for them.
This paper proposes a hybrid energy source (HES) based double-stator permanent magnet brushless motor drive (DS-PMBL) for hybrid electric vehicles (HEVs). The key is to design and apply a battery-ultracapacitor HES to the DS-PMBL HEV drive properly, incorporating the merits of both battery and ultracapacitor. The peaky charging and discharging currents are supplied or absorbed by the ultracapacitors...
Process flow of wheelset dismantler and the necessity of mechanics analysis about it are described in this paper. The mechanics-action of wheelset dismantler's connected beam in press-fit condition is analysed using universal finite element software ANSYS, connected beaam stresses and deformations are calculated and compared each other. The results indicate that the maximum stress of connected beam...
After characteristic analyzing of materiel development project technical capabilities, this paper defines a quantitative technical risk assessment method based on grey relevancy degree. Firstly, a set of technical capability character parameters of materiel development project and their values are retrieved by technical capability characters analyzing. Then, by task targets breaking down, every sub-task...
The development of modern integrative transportation system calls for the reform of the traffic management system objectively. The analysis of the experience of traffic management in foreign developed countries suggests that Chinese traffic administrative management should be centralized in terms of authority structure, separated between the powers of policy-making and execution in terms of authority...
This paper uses monthly precipitation data of the 46 stations from 1951–2007 in southwest China, classifies and analyzes the average distribution of the climatic precipitation in summer and the distribution of the yearly anomaly field in southwest region, then does EOF analysis for the exceptional field of summer average precipitation in southwest region. The results of the climatic analysis show:...
Guanzhong-Tianshui Economic Zone has a unique position and advantage in china. It is one of the three important economic zones in the west part in china. This article is based on the regional Competitiveness theory, use the method of factor analysis and compare guanzhong — Tianshui Economic Zone with the Western relatively developed provinces to making regional competitiveness rankings. According...
In this paper, the typical meteorological year of Xi'an is devided into three periods according to the different radiance-calculating periods and corresponding meteorological data, including daily average temperature and solar radiance are analyzed by statistical method. The hourly meteorological parameter of different periods and different weather regimes of a whole year are statisically analysed,...
PBL (Problem-Based Learning) is a kind of teaching method with the feature of self-regulated learning based on problems. This paper provides not only the organizational form of PBL model, but also the concrete measures and teaching effects by using PBL method on the course of Single Chip Microcomputer. Finally, the paper analyses the deficiencies and the improved ways by using PBL model.
This paper intends to build the connection between cultural vitality and urban landscape theme. Through theoretical analysis and specific examples, we discuss the effects of three important cultural vitality elements on driving urban landscape theme, including events and stories, media of image, old and new forms. The results show that these cultural vitality elements not only work alone, but also...
Based on the crucial problem of how to built an attractive urban environment, this article construct a model of urban landscape. The modle described driven mechanism of environmental vitality, according to three interlaced elements which motivate and form a whole vigorious urban landscape. Landscape facilities, as foundamental element, construct a meaningful place; changeable time, as driven element,...
This paper focuses on communication security of e-commerce. A secure electronic transaction model was designed, with the designs of security protocols of transactions for each process in detail, and the advantages was pointed out. In the design process, the security protocol proposed in this paper is not confined to a particular electronic trading system itself. This model has a wide range of practical...
Risk management in a Virtual Enterprise (VE) is an important issue due to its agility and diversity of its members and its distributed characteristics. In this paper, we develop a partners' risk level considered Constructional Distributed Decision Making (CDDM) model for risk management of the VE. The model has two levels, namely, the top model and the base model, which describe the decision processes...
BOT (build-operate-transfer) projects have been explored in worldwide infrastructure development. Selection of the right concessionaire, which is critical to the success of such BOT projects, depends on the quality of identifying and defining suitable project-specific criteria and the quality of formulating an efficient tender evaluation methodology. This paper analyzes and draws experiences and lessons...
Due to the limitations of campus network at its preliminary stages of development, there are no unified criteria or norms for the data organization among different work sections. Accordingly, it is impossible for different sections to share data effectively. Apart from this disadvantage, it is also inconvenient for users, and it is unhelpful for universities' construction of informatization either...
This paper designs a wireless data Transceiver by using nRF905, DS18B20 and STC12C5410AD. Through I/V converter,the Transceiver can receive the standard 4-20mA current signals exported by transmitter. So the wireless data transceiver has certain universal. The furnace temperature Wireless Data Acquisition System is designed by describing the hardware circuit and data sending/ receiving flow. The system...
Based on the ideas of modeling of complex systems from “dynamic graph”, the analysis and design of dynamic topological structural coordinator was presented to remedy the model deficiencies that the system can only be adjust in the condition of minor interconnected intensity caused by the restriction of dynamic connective stability during the design of dynamic interconnected coordinator. The necessary...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.