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.
Enabled by technological change, telecommunications service providers have entered a new era in which integrated telecommunications services, particularly data and video offerings, will be their principal growth drivers. In order to provide these services to their subscribers, often in multiple play bundles, the two principal telecommunications operators in Latin America, America Movil and Telefonica...
This paper presents an approach to define the IT service portfolio so that the definition can bring the best interests to the IT Service provider and its customers. During the Service Strategy phase of the IT service life cycle defined in ITIL, the major challenge to be faced by IT executives is the selection of a maximum benefits IT service portfolio. In this paper, the IT service portfolios are...
Based on financial status of loan customers, considering the constrain on laws, and regulations, using portfolio profits maximum of bank's assets as objective function, the optimal model of asset-liability-management is set up, in order to provide decision-making method for bank's risk management. The characteristic is that the financial status of loan customers is measured by Z-Score model, which...
This paper is a descriptive case study of how one department at Paf, Paf.com, introduced portfolio management to help support scaling agile software development. Paf.com had experienced problems with long time-to-market due to thrashing, which was caused by frequently changing priorities due to an ad-hoc prioritization process and handovers. Also, there was lack of visibility into projects entering...
Due to the rapid speed of globalization and evolving technologies, firms rely on IT much heavier than before. They use IT not just to cope with the environment, but also to gain competitive advantages. Therefore, it is important for firms to invest on the right while also critical IT with limited resources. To fulfill this need, this research aims at developing an IT portfolio method to evaluate and...
In the research, we investigate the role of diversification in the type of innovation strategy followed by incumbent firms in the IT industry. We setup a two-stage game theoretic model where, in the first stage, the incumbent decides whether to invest in R&D or acquire a pre-emptive stake in the entrant. In the second stage, the incumbent decides whether or not to acquire a successful entrant...
The integration of governance, risk, and compliance (GRC) activities has recently witnessed increased attention. Many organizations have deployed integrated GRC software. In this paper scientific research examines state-of-the-art GRC software for the first time in answering two questions: What is state-of-the-art GRC software according to the software industry, and how should scientific research...
In this paper, we present a commonsense knowledge supported intelligent news analysis system for portfolio risk prediction. Different from traditional lexicon based text mining methods, the system aims at simulating common investors' news analyzing ability with case based reasoning. To automate such a reasoning process by computers, a description logic based knowledge mediator is designed and plugged...
Whether the number and content of messages on a stock bulletin board system (BBS) relates to the stocks return has been investigated. Also verified was whether Fama and French's three-factors approve a portfolio on the basis of the number or contents of messages on the Tokyo Stock Exchange (TSE). It was found that the three-factor model may not approve portfolios because abnormal returns were found...
In the new power business, the goal of electric generation companies is to commit their services at profit. The committed services will determine the future cash flows and consequently financial performance. However, purely generation assets' cash flows are path-dependent, since the path dependency relies on operational generating units' constraints. This paper focuses on the GenCos' future cash revenue...
Stock markets failed to predict the current decline of the economy. In 2007, almost all the major indices were performing well. However, clearly something bad was about to occur. In this paper we shall show that by exploring the information contained in option prices one can find a different story. A key tool introduced in this paper is a new quantity which measures the Bullish or Bearish nature of...
The aim of this research is to enhance the practicability of Artificial Intelligence using Neural Network (NN) in the actual market. This paper generalized the standard Markowitz Theory's Efficient Frontier to mimic and optimise the portfolio construction and develop a neural network heuristic to better understand the chemistry of how Artificial Intelligence can construct optimal portfolio ability...
This paper tests the market reaction of equity incentives of listed companies in China by the means of event study since 2006, and compares the reaction intensity of different control rights types of listed companies. The results find that a significant positive market reaction after the disclosure. The reaction intensity of state-owned listed companies is greater than that of companies listed in...
Although asset growth has little effect on the behavior of the typical fund, funds should alter investment behavior as assets under management increase. We find that large funds diversify their portfolios in response to growth. Greater diversification, especially for large funds, is associated with better performance.
This paper explores the relationship between institutional ownership and corporate governance in China. In order to study the role of institutional investors in corporate governance, the author first studies the relation between institutional ownership and corporate performance. The empirical results show that institutional ownership is not only positively correlated with current corporate performance,...
According to the characteristics of Chinese securities market, this paper adjusted the standard Fama-French Three factors asset pricing model, by introduced price/earning rate of accounting index and trading volume rate of technology index. The empirical outcome indicates that the standard F-F model can be used to basically interpret the correspond portfolios' weekly return of Csindex100 sample shares...
Contrary to the growing use of portfolios and in spite of its rich literature, there are some problems and unanswered questions. The aim of this work is to be a useful instrument for helping fin anco practitioners and researchers with the portfolio selection problem. This study first reviews Modern Portfolio Theory's literature and describes the investment selection process. Second, this paper specifically...
Making reference to method of the abroad research, selecting the stocks from Shanghai and Shenzhen 300 index, we redo the research about the price momentum effects in China stock market with stocks' monthly return between Jan.2007 and Dec.2009. Under the assumption of short selling, we find significant momentum effect with the forming and holding period of 3-12 months and on the contrary find significant...
For the sake of finding the portfolios with low risk and high return, copula function is used to compute the tail dependence coefficient. We present the investment ratio function of value-at-risk of portfolio, and use the tail dependence coefficient to research value-at-risk of portfolio. We propose to use the curve of portfolio value and the curve of portfolio value-at-risk to analyze investment...
Even though students know something about the complex theories in accounting, it's still difficult for them to deeply understand and fully grasp these theories. This paper talks about the active roles of spreadsheets in grasping these complex theories. Practice shows that the application of spreadsheets in the teaching can not only deepen the students' understanding of complex theories, but also improve...
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.