Articles
Browse all publications by
Recent submissions:
-
The Role of Web 2.0 Tools for Managing Knowledge at Individual and Organisational LevelsRazmerita, Liana; Kirchner, Karhrin; Sudzina, Frantisek (Frederiksberg, 2009)[More information][Less information]
Abstract: Purpose – This paper discusses new approaches for managing personal knowledge in the Web 2.0 era. We question whether Web 2.0 technologies (social software) are a real panacea for the challenges associated with the management of knowledge. Can Web2.0 reconcile the conflicting interests of managing organisational knowledge with personal objectives? Does Web 2.0 enable a more effective way of sharing and managing knowledge at the personal level? Design /methodology/approach – Theoretically deductive with illustrative examples. Findings – Web 2.0 plays a multifaceted role for communicating, collaborating, sharing and managing knowledge. Web 2.0 enables a new model of PKM that includes formal and informal communication, collaboration and social networking tools. This new PKM model facilitates interaction, collaboration and knowledge exchanges on the web and in organisations. Practical implications – Based on these findings professionals and scholars will gain a better understanding of the potential role of Web 2.0 technologies for harnessing and managing personal knowledge. The paper provides concrete examples of how Web 2.0 tools are currently used in organisations. Originality/value – As Web 2.0 has become integrated in our day-to-day activities, there is a need to further understand the relationship between Web 2.0 and Personal Knowledge Management (PKM). URI: http://hdl.handle.net/10398/8933 Files in this item: 1
-
A Case Study in Knowledge ManagementRazmerita, Liana (, 2011)[More information][Less information]
Abstract: This article focuses on the role of user modeling and semantic-enhanced representations for personalization. The paper presents a generic Ontology-based User Modeling framework (OntobUMf), its components and its associated user modeling processes. This framework models the behavior of the users and classifies its users according to their behavior. The user ontology is the backbone of OntobUMf and has been designed according to the Information Management System Learning Information Package (IMS LIP). The user ontology includes a behavior concept that extends IMS LIP specification and defines characteristics of the users interacting with the system. Concrete examples of how OntobUMf is used in the context of a Knowledge Management System (KMS) are provided. The paper discusses some of the implications of ontology-based user modeling for semantic-enhanced Knowledge Management (KM), and in particular for personal KM. The results of this research may contribute to the development of other frameworks for modeling user behavior, other semantic-enhanced user modeling frameworks or other semantic-enhanced information systems. URI: http://hdl.handle.net/10398/8932 Files in this item: 1
-
[More information][Less information]
Abstract: Despite the celebration and promotion of the creative economy, there is still a “dark” side to creativity. Creativity entails experimentation, chaos and failures. A creative space blends the aesthetics with chaos, sleek design with experimentation, and economic development with failed ideas. This case looks at the ambiguous and ambivalent interfaces of history in the historical city of Melaka (also known as Malacca) in Malaysia. History, by its definition, is a documentation of the past. Any historical documentation can be contested and revised. This case will not engage in the debate on revisionist history. Instead, it will show how history and heritage is negotiated and appropriated under present circumstances in the historic city of Melaka. The re‐interpretation and revision of history is part of the everyday creative response to changing circumstances. Such contemporary responses to the past, however unclear and acrimonious, are the essence of a creative place. URI: http://hdl.handle.net/10398/8927 Files in this item: 1
Ooi.pdf (1.077Mb) -
[More information][Less information]
Abstract: We price vulnerable derivatives - i.e. derivatives where the counter- party may default. These are basically the derivatives traded on the OTC markets. Default is modeled in a structural framework. The technique employed for pricing is Good Deal Bounds. The method imposes a new restriction in the arbitrage free model by setting upper bounds on the Sharpe ratios of the assets. The potential prices which are eliminated represent unreasonably good deals. The constraint on the Sharpe ratio translates into a constraint on the stochastic discount factor. Thus, tight pricing bounds can be obtained. We provide a link between the objec- tive probability measure and the range of potential risk neutral measures which has an intuitive economic meaning. We also provide tight pricing bounds for European calls and show how to extend the call formula to pricing other nancial products in a consistent way. Finally, we numeri- cally analyze the behavior of the good deal pricing bounds. URI: http://hdl.handle.net/10398/8899 Files in this item: 1
-
Modeling and Risk AnalysisCont, Rama; Jessen, Cathrine (, 2011)[More information][Less information]
Abstract: Constant Proportion Debt Obligations (CPDOs) are structured credit derivatives which generate high coupon payments by dynamically leveraging a position in an underlying portfolio of investment grade index default swaps. CPDO coupons and principal notes received high initial credit ratings from the major rating agencies, based on complex models for the joint transition of ratings and spreads for all names in the underlying portfolio. We propose a parsimonious model for analyzing the performance of CPDO strategies using a top-down approach which captures the essential risk factors of the CPDO. Our approach allows to compute default probabilities, loss distributions and other tail risk measures for the CPDO strategy and analyze the dependence of these risk measures on various parameters describing the risk factors. We nd that the probability of the CPDO defaulting on its coupon payments is found to be small{and thus the credit rating arbitrarily high{ by increasing leverage, but the ratings obtained strongly depend on assumptions on the credit environment (high spread or low spread). More importantly, CPDO loss distributions are found to be bimodal with a wide range of tail risk measures inside a given rating category, suggesting that credit ratings are insu cient performance indicators for such complex leveraged strategies. A worst-case scenario analysis indicates that CPDO strategies have a high exposure to persistent spread-widening scenarios CPDO ratings are shown to be quite unstable during the lifetime of the strategy. URI: http://hdl.handle.net/10398/8890 Files in this item: 1
constant_proportion_cathrine_jessen.pdf (599.2Kb)
