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.
Semantic Web and ontology play an important role in various research fields today, but are rarely used in the materials science domain. In this paper we propose an approach to find a mapping method from metal materials database to an ontology. The proposed method refers to the latest W3C standard DM and R2RML. The goal of the mapping system is to transform Relational Database (RDB) to the Resource...
This paper addresses the power transformer tank design optimization problem and, proposes a tank mechanical property analysis method with high calculation precision. The main contributions of this research are: 1) introduction of a new effective method to calculate transformer tank mechanical property; 2) incorporation of Quantum behaved Particle Swarm Optimization (QPSO) algorithm to solve the tank...
Electrical equipment used in cold weather regions are subjected to different environmental conditions than most standard approvals cover. There are two main areas of concern for products used in cold weather — safety and function. For Class I classified locations the ability of the equipment to maintain its explosion protection properties at low temperatures is of major importance. Low temperatures...
Real performance of a large number of 18.5kW contactors available on the market are presented with their evolution over the last 10 years. Significant disparities were observed. They are mostly independent of electrical contacts implemented. By contrast, a strong presumption is issued on the dependence of the contact force which becomes weaker and weaker. In preamble, the evolution on test machine...
The use of Non-Dispersive InfraRed (NDIR) detection technology as a basis for a Hazardous Area Classification is described. Methods for identifying fugitive emission leaks using NDIR technology, quantifying leak data and applying the results to document the basis for a hazardous area classification are presented. Limitations associated with the technology are also defined. A case history of a gas...
We report progress on the development of a new technique that has the potential to enable the vacuum deposition of OLEDs with feature sizes ≤ 20um, and hence high resolution OLED displays. An OLED device with 16um by 130um sub-pixel size has been successfully demonstrated utilizing the novel idea of the in-situ shadow mask patterning method showing the capability of this method to achieve high resolution...
During the period 1998–2008, there was a 150% increase in the number of students who choose the online courses to carry out part of their credits. In 2013 it is expected that nearly 20% of college students will receive more then 80% of their credits by online courses. This scenario of online courses popularization requires attention to quality issues, as well as the establishment of mechanisms to...
The last decade there is discussion about methods and means of improving quality of engineering education and about ways to implement them in a high school practice. The authors focus on the question of forming competences in the field of quality management on the example of educational direction “Materials Science and Technology of Materials”. As shown the producing departments often include in the...
There is controversy among scientists whether standards and regulations hamper or stimulate innovation. Using a new approach and a different data set, we argue with Swann and Lambert (2010) that this controversy is based on a false antithesis. Building on Swann and Lambert (2010), Swann (DTI, 2005) and King (2006) we focus on pre-existing standards and regulations, i.e., those that are not specific...
With the rapid growth of network technologies, Web-based learning conquers the limits of time and location in traditional teaching and is increasing its popularity. However, most of the learning websites lacks of the convenient tools in packaging the information users are interested in. Therefore, the information posted and exchanged in the websites is not easy to be extracted and reused somewhere...
The appropriate choice of the physical layout of the shop floor is fundamental for the viability of an industrial activity in the current globalized and highly competitive economy. More and more specialized products, with successively shorter life cycles seek to respond to the frequent market changes, demanding an agile and flexible industrial system that at the same time is economically efficient...
In order to solve the prominent problems such as slowness, subjectivity and inclination of human factors in competitive procurement method selection for general equipment maintenance materials, based on five key indexes including confidentiality, security, number of qualified suppliers, fund saving rate and project time limit, this paper presented a new quantitative model for procurement method selection...
Paper concerns accumulation of video-quality losses in multiple HEVC encoding and decoding cycles. The results of extensive experiments with standard video test sequences are reported. General conclusions has been drawn about relative quality losses after each cycle, as well as about total quality loss with respect to first cycle. In general, quality losses after each cycle are decreasing and total...
After a research on railway project cases, we find that in some China companies, project cost control is such weak, even though the railway project has a huge number of investments with a short construction period. So to solve this problem, this paper constructs WBS standard templates and dictionaries of Four-Electrical (Communication, Electricity, Electrification, Signal) railway projects, based...
Few research conducted Multinational enterprise CSR in foreign context and emerging markets. It also remains unclear the link between social practices and product market performance at the branch level in the multinational context. To understand (1) does Multinational enterprise CSR in host country influence their branches' performance in emerging market; (2) how the spatial distance between home...
As students become increasingly more reliant and absorbed in technology, the new technology roles in their lives have affected many aspects of their learning traits. Some researchers have confirmed that the learning habits of today's youngsters are very different from that of their parents and teachers. The educational demands of this new century require new ways of thinking, teaching and learning...
Based on the Low-Rate initial production of China's aeroengine, this paper systematically investigates the difficulties met in Low-Rate initial production. In order to satisfy the power needs for china's major aircrafts, in allusion to the characteristics of this stage, it is focused to improve the development process of aeroengine Low-Rate initial production, and guarantee quality and safety and...
The use of serious educational games has many advantages, offering immersive, engaging and fun environments that require deep thinking and complex problem solving within a construct of overcoming obstacles and challenges. Developing new games, however, to support broad and rapidly evolving disciplines has remained time consuming, expensive, and requiring the expertise of game designers, software developers,...
Equipment characteristics of civil-military integration precision support are introduced, and the preliminary conception of the domestic Civil-military integration precision support system is put forward. Equipment of Civil-military integration is supported by the support system which has precise construction idea and process of the construction, and the key technologies are discussed and analyzed.
Internal control level directly affects the quality of financial report of a firm and CPA's audit input and risk. Do CPAs take such a relation into account when they decide the level of audit fees charged to firms? In this paper, the author conducts an empirical study on the relationship between the internal control quality, audit risk and audit fees, using a sample of 1395 companies listed on Shanghai...
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.