Serwis Infona wykorzystuje pliki cookies (ciasteczka). Są to wartości tekstowe, zapamiętywane przez przeglądarkę na urządzeniu użytkownika. Nasz serwis ma dostęp do tych wartości oraz wykorzystuje je do zapamiętania danych dotyczących użytkownika, takich jak np. ustawienia (typu widok ekranu, wybór języka interfejsu), zapamiętanie zalogowania. Korzystanie z serwisu Infona oznacza zgodę na zapis informacji i ich wykorzystanie dla celów korzytania z serwisu. Więcej informacji można znaleźć w Polityce prywatności oraz Regulaminie serwisu. Zamknięcie tego okienka potwierdza zapoznanie się z informacją o plikach cookies, akceptację polityki prywatności i regulaminu oraz sposobu wykorzystywania plików cookies w serwisie. Możesz zmienić ustawienia obsługi cookies w swojej przeglądarce.
As a new commerce business activity, e-commerce is the key to the future economic growth. Customer trust is the survival and development issue for enterprises of electronic commerce, so evaluating customer trust rationally will be the key research. But the customer trust evaluation focus mainly on theoretical study, but less on the empirical analysis and quantitative research. This article finds out...
IT service quality has been proved important to IS success, but former researchers used to consider IT service quality and information system quality as two independent factors, the relationship between the two factors were never studied .The goal of our study is to understand the link between them, and help organizations manage their system better. SEM and SERVPERF instrument were used in our study.
On the basis of the deep search and analysis of the relative literature of virtual R&D team, the article summaries a total of 11 key factors which influence the virtual R&D team performance. And the article uses "input - process - output" model (IPO: input-process-output)to build a performance influencing factors model of virtual R&D team, and brings up theoretical assumptions...
The empirical results show that the dynamic conditional correlation (DCC) and the bivariate asymmetric-IGARCH (1, 1) model is appropriate in evaluating the relationship of the U.S. and the Canada's stock markets. The empirical result also indicates that the U.S. and the Canada's stock markets is a positive relation. The average estimation value of correlation coefficient equals to 0.686, which implies...
This paper proposes a new method for selecting input variables in short-term electric load forecasting models. It is known that input and output variables do not follow the Gaussian distribution in load forecasting. In this paper, a hybrid method of graphical modeling (GM) and deterministic annealing EM (DAEM) clustering is presented to clarify causal relationship between the explained one-step-ahead...
Correlation-based pattern discovery from replicated molecular profiling data enables essential data mining tasks, such as discovering biomolecule association networks and functional modules. Unfortunately, the existing approaches are not tailored to analyze replicated measurements, which is further confused by various replication mechanisms. With few exception, existing approaches average or summarize...
This paper examines the hypothesis that the national funding of science is a product of the process of governance. In support of this idea comparative theories of national governance are mustered. A mixed regression model is developed which examines the explanatory power of economic and political variables in determining science funding in an extended sample of OECD nations.
This paper present development rule of high-tech industry on the view of relationship of innovation feature factors and profit with statistics data from National Bureau of Statistics by Dual-density Dependent model and Density Dependence Model. It was found that the R&D investment did not generate direct promotion for profit growth, new products development investment (NPDI) also showed a weak...
The paper describes methods of comparing calculated ECG signal with real signal. Five examination methods of ECG-signal reconstruction from reduced system were proposed in this description. These methods prove reconstruction and evaluate results. They are based on statistic methods, nonparametric approaches and autoregressive models.
Our study is part of an attempt to build up a mixed employment research model addressing the interaction between nonstandard employees and standard employees in the mixed employment work environment. Our initial research model is built up through a two-way analysis of the interaction between the standard and nonstandard employees mainly from three aspects which are job satisfaction, organizational...
The study tests a moderation model of political behavior. Specifically, we propose that an individual's perceptions of organizational politics (POPs) influence his or her own political behavior engagement, while the POPs-political behavior linkage varies across different individual political skill levels. For those politically skilled individuals, the POPs-political behavior relationship will be positively...
The article examines daily market index data of China stock markets from 1998 to 2008, and analyses fluctuation link trend between two regions' stock markets. Through Johansen co-integration test and Granger causality test, the paper finds the link between Shanghai and Shenzhen stock markets and Hong Kong stock market has become more closely linked and integration trend is remarkable. The strong relevancy...
The paper started from analyzing the background of the development of headquarter economy in Xi'an Hi-Tech Industries Development Zone (ldquoXi'an High-tech Zonerdquo for short) and the literature review of financing efficiency , and took the effect that financial services system had on corporate financial efficiency as the research object. The research took high-tech enterprises, financial institutions'...
To test long memory and leverage effect in daily exchange rate of Euro foreign exchange market, this paper builds ARFIMA-FIEGARCH model to the return series, using daily exchange rate of EUR/USD, EUR/JPY and EUR/GPB from 1st Jan 1999 to 31st Dec 2007. According to Akaike, Schwarz, Shibata and Hannan-Quinn information criterions, order of the model is fixed and parameter is estimated. The empirical...
Enterprise risk conduction is the course that a little beginning departure or uncertainty has been transferred to process of operation, because of disturbance of interior and exterior uncertain factors in enterprise. The article firstly establish multi-dimensional characteristics matter-element matrix about subject which can describe the quantitative process of enterprise risk conduction, then discusses...
We consider n agents located on the vertices of a connected graph. Each agent v receives a signal Xv(0) ~ N(??, 1) where ?? is an unknown quantity. A natural iterative way of estimating ?? is to perform the following procedure. At iteration t + 1 let Xv(t + 1) be the average of Xv(t) and of Xw(t) among all the neighbors w of v. It is well known that this procedure converges to X(??) = 1/2|E|-1 ??...
Bioinformatics applications currently require both processing of huge amounts of data and heavy computation. Fulfilling these requirements calls for simple ways to implement parallel computing. MapReduce is a general-purpose parallelization model that seems particularly well-suited to this task and for which an open source implementation (Hadoop) is available. Here we report on its application to...
Using a characteristic function method the mixing property and ergodicity of strictly stationary continuous-time linear random process driven by process with independent increments have been proven.
Cash flow is the basis of value evaluations of listed companies. Based on the complete sample data from the Shanghai and Shenzhen Stock Markets during the year 1998-2005, we compared the value correlations among CFO, FCF and TCF using pricing model and benefit model, and found the value correlation of CFO, and then analyzed the differences of the value correlation of cash flows in different years.
Merton's equity-based approach is considered as a pioneering tool for measuring default risks. But in developing countries, we find that the invalid priority principle of Merton's model-because of the existing soft constraint-put negative influence on the applicability of the model. Bringing soft constraint into consideration, we establish a new model, which adds a new parameter thetas to describe...
Podaj zakres dat dla filtrowania wyświetlonych wyników. Możesz podać datę początkową, końcową lub obie daty. Daty możesz wpisać ręcznie lub wybrać za pomocą kalendarza.