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.
Beijing Metro Line 4 was the first metro line in China's orbit traffic industry to be built under the PPP project financing model. Hangzhou Metro Line 1 copied and borrowed the former's model. But Hangzhou Metro Line 1 has been in the red for a long time, and even became the only defective metro line in the four affiliated orbit traffic companies to MTR Corporation Limited in 2014. Given the situation,...
Proposes an approach to assessing the state of plant species (based on an example of assessing the state of large-leaved linden) in urban environment on the basis of fuzzy information from a group of experts. Formalization of the expert information is carried out on the basis of complete orthogonal semantic spaces. The proposed approach allows to avoid mistakes in the assessment of a single expert...
Anatomical variability in patient populations has presented a challenge to the verification and validation (V&V) process for medical devices. This lack of conformity is also present in the anatomical models used for device design and testing, leading to a limited ability for comparative analysis among study results. Other industries have adopted standardized models for benchmark analysis and the...
The research on the coordinated control system of ultra-supercritical coal-fired (USC) power unit is usually based on a kind of mathematical model, which is used to test the correctness of the design concept and the effectiveness of the control strategy. If the mathematical model cannot reflect the intrinsic nature of the controlled object, the simulation results are difficult to explain that the...
In this paper, we present a comparative analysis of surface-mounted permanent magnet synchronous motors (SPMSM) and interior permanent magnet synchronous motors (IPMSM) for compressors of air-conditioning systems in electric vehicles (EVs). First, we use 2D finite element analysis (FEA) to analyze models satisfying the same rated conditions according to the torque-speed curve characteristics, which...
Under the background of economic globalization, the demand of the excellent bilinguals is growing rapidly in the whole world. The Chinese-Foreign Cooperation in Running Schools (CFCRS) came into being and is moving forward through twists and turns. It is necessary to find a suitable bilingual teaching model. This paper is mainly based on the status of bilingual teaching in the Chinese-Foreign Cooperation...
In order to promote the application value and instruction significance of “structural Keynesian investment multiplier” (abbreviated as SKIM), this paper takes environment consumption and environment input into the second-stage input-output table. It meanwhile proposes a concrete plan of compiling a “second-stage input-output table that incorporates environment factor”, and based on this designs a...
The paper presents a comparative analysis between the Multicore and the Grid execution of SWAT hydrological model. We try to emphasize the advantages brought by the Grid infrastructure, especially for large scale applications which require large number of executions and huge data resources. We use as a case study a large scale hydrological model, built using the Arc SWAT program, which covers the...
Understanding the characteristics of Internet application structure and traffic is critical for traffic modeling and network optimization. In this paper, the behavioral structures of different Internet applications are constructed based on a large sample of flow data collected from operational network of ISP. For each application type, i.e. Web, P2P Stream, P2P Download, Video Stream, Instant Messaging...
Shrinkage error will impact the results obtained from the observation data when studying subsidence by the method of similar material simulation experiment. Using digital industrial close-range photogrammetry system in the experiment, high-precision observational data is collected. By comparative analysis on the subsidence of the points at different locations, we obtained the distribution law of shrinkage...
The multiconductor transmission line model of a multilayer graphene nanoribbon (MLGNR) interconnect is proposed for the analysis of current distribution and signal propagation at radio frequency (RF) up to 100 GHz. The equivalent single conductor model is also developed in order to analyse the common mode propagation. The comparison of the RF performances of a MLGNR interconnect and a multi-wall carbon...
The main purpose of this paper is to present a method for determining yellow time based on dilemma zone concept. The results of comparative analysis show that estimated yellow times obtained from the model proposed in this paper are much different from actual yellow times obtained from the field. Combining with the dynamic characteristics of motor engineering, calculation is provided on the vehicles'...
Mode of operation of tourism enterprises by the local development level of e-commerce, enterprise's own characteristics, and so on. Tourism e-commerce in China-US business model is far greater than the differences that exist in the service function of the existing differences. In this paper, from a tourist site and a comprehensive Web site navigation, and strategic collaboration between the co-operation...
The models of software development used for electro-technical systems are observed by the authors. The classification of this models are offered in the article.
This paper presents the "Comparative Analysis of Software Process Improvement models". Software process improvement is recognized as an important part of the software development life cycle. Several contemporary models have been developed to assist organizations evaluate and improve their software development processes and capabilities. There is substantial evidence that a successful software...
Fixed-mobile substitution is an irresistible trend throughout the world. However in the process of FMS, the patterns of fixed to mobile substitution varies with time and are quite different from one place to the other. This paper set up regression models to explore the relationship between the demand for fixed and for mobile, based on the fixed line penetration and mobile penetration from four groups...
Now there are many prediction models based on grey theory, however, the precision, adaptability and efficiency may be quietly different, so it is essential to choose a more suitable prediction model for the stability evaluation of tunnel surrounding rock-support system. In the paper, some typical grey prediction models were discussed and compared from aspects of precision, adaptability, computational...
This paper quantitatively analyzes the use of the e-marketplace for selling the returned products after rework in a dual-channel supply chain. In our dual-channel model, we derive the optimal order quantities and optimal retail prices for all the parties in the supply chain and we also propose the optimal buyback price established by the manufacturer. Through comparative analysis of the single-channel...
This paper combined the characteristic of mobile customers churn data, through compare, point out the problem of existing forecast model and the deficiency of traditional vector machine in forecast model. Aimed at the problem of mobile customers churn, established supporting vector machine forecasting model based on ICSVM arithmetic. Through mobile customer data set testing, compare this model to...
With the development of VLSI, circuit Design for Testability has become the focus of attention. Fault diagnosis and detection VLSI has become an important part of the development of essential. This paper is based on DFT theory as background, introduced the concept of fault simulation. Then introduce several fault simulation algorithm. And they conducted a comparative analysis. This paper expounds...
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.