Component technologies for e-discovery and prototyping of suit-coping system

As ESI (Electronically Stored Information) is included in extent of evidence that become discovery\u27s target in FRCP(Federal Rules of Civil Procedure) taken effect on December 1, 2006, enterprises been always vexing in several litigations need to adapt systems coping with e-Discovery such as ESI administration or information preservation. In this paper, component technologies for all steps of e-Discovery are described in detail, and as a prototype of preparing system for e-Discovery, agent-based information management and control system being able to manage ESI stored at some computers centrally and respond rapidly on demand, extracting discoveryrelated data using digital forensic technologies, are introduced. Apart from fundamental searching and analysing functions, this system can detect user’s abnormal behaviours, generate forensic images remotely, and have a function of controlling related files

The Difference between Offline and Online Ties in Twitter

Social network sites (SNSs) not only strengthens an existing offline relationship, but also facilitates the formation of a new online relationship. As a result, there coexist the online ties between offline friends and online ties between two users who do not have any offline interactions and connection in SNSs. We investigate the nature of offline ties and its roles on tweet diffusion. We observe some interesting findings: (1) people can spread more efficiently (with fewer hops) their tweet on their offline friends’ local network; (2) offline ties play an essential intermediary role in facilitating pairwise tweet dissemination on each other’s local network; (3) As either in-degree centrality of a network or the number of community clusters increases, the information flow efficiency and edge-between centrality increase

Connecting with International Learners by the Globalization and Localization of E-Learning Contents through Collaboration : Lessons from Higher Education Institutes in Korea(Session 3: International Collaboration in Content Development and Distribution,E-learning beyond Cultural and Linguistic Barriers : Co-existence and Collaboration(NIME 2002 INTERNATIONAL SYMPOSIUM))

It is reported that Korea has the highest Internet penetration rate in the World (KERIS, 2002). The number of internet users in Korea numbered 24.5 million as of October 2001, which equals 51.6% of the total population. This figure is more than double the figure of 2000, which was 11.3 million. The history of adapting education to the information age in Korea has begun from the 1970s, namely the embryonic period. Early and mid 1980s was the developing period during which the comprehensive plan for education reform was initiated. During the late 1980s and early 1990s, or what we call the expanding period, plans to reinforce computer education in schools were established, while a scheme to build a research and education network in higher education institutions was conceived. From mid 1990s to the present, education is being adapted to fit the information age. Against this backdrop, the Framework Act on the Promotion of ICT was formulated (MOE & HRD, 2001). In the process of utilizing ICT in schools, some major problems were identified. They include a shortage of educational contents and lack of information sharing among institutions. This implies that there is a need to develop and secure ample e-learning contents through collaboration among educational institutions at a local level as well as at an international level. This paper presents the current status of e-learning in Korean higher education institutions, describing initiatives in the globalization and localization of e-contents through regional and international collaborations

Strategic decisions under uncertainty: Supplier quality improvement and exit in duopoly

This dissertation consists of three interrelated essays on firm-level decision problems when the exterior environment (e.g. product quality or market prospect) is uncertain and there are strategic interactions with other firms (e.g. competitors). The first essay (Chapter 2) studies a buyer’s decision to improve its supplier’s quality when the focal supplier is shared by another buyer who competes in the same market. Each buyer’s investment is a way to outperform the other buyer. However, the investment opportunity comes with spillover risk via the shared supplier. Given this risk-benefit tradeoff, we characterize the conditions under which the optimal timing of the first investment in shared suppliers is earlier (or later) than in sole suppliers. Also, we find that learning moderates the impact of competition and spillover on investment decisions, which suggests that the interplay between learning, spillover, and competition should be carefully examined to build sound investment strategies. The second essay (Chapter 3) also examines buyers’ investment decisions in a buyer-supplier-buyer triad. However, we consider the case when market competition is not an integral part of the problem so that a buyer strives to free-ride on the other buyer’s investment in the shared supplier. Moreover, because the improved quality deteriorates over time by organizational forgetting, buyers should make such an investment decision repeatedly. This problem is thus a repeated free-rider problem. The main finding of this essay is that each buyer delays its investment in the hope of free-riding on the other only if the game is repeated and there is a unique equilibrium entailing inefficient delays. Due to this uniqueness of the equilibrium, we are able to construct the well-defined measure for the inefficiency from free-riding incentives and estimate this inefficiency by using primary data from a field study of an automotive manufacturer. The results from this estimation indicate that the inefficiency can be substantial although it greatly varies depending on the supplier sectors. The third essay (Chapter 4) investigates firms’ exit decision problems under uncertainty by employing the similar mathematical framework used in the second essay: The first firm to exit the market concedes the monopolist’s profit to the remaining firm. The extant literature in economics has predicted that the firms stay in the market longer than necessary. We revisit this problem with two realistic perturbations – firms are asymmetric in their exit barriers and the market evolves stochastically. In contrast to the findings of the previous literature, we find that this perturbed model does not admit an MPE (Markov perfect equilibrium) resulting in inefficient (i.e. longer than necessary) stays. Therefore, this asserts the instability of an equilibrium with inefficient stays, which provides a novel rationale for selecting an equilibrium over the others