2008, Vol.15, No.1

Informatization Policy 2023 KCI Impact Factor : 4.08

pISSN : 1598-3498
https://journal.kci.go.kr/nia

With the rapid development of information technologies, informa tion security incidents like) attacks have become morefrequent and the scale of the economic damages from such incide nts is growing. However, there is no formalapproach to assess economic damages from information security i ncidents. This paper presents a framework toevelops formulas for each element to empiricallycalculate the economic damages. We also compared annual economi c damages of Korea with that of Japan andannual worldwide damages to test our approach and result.

Demand for spectrum resources, especially in low frequency bands, is ever increasing with the development of mobile telecommunications and so is their economic value as other national resources. As a way to enhance the economic efficiency of use of spectrum resources, many countries, including the US, the UK and Canada have recently focused on the management of public and broadcasting spectrums which have traditionally been undercharged compared to their economic values. This study discusses value-based charges for the usage of low frequencies, analyses economic effects of Negroponte Switch in S. Korea and provides policy implications for spectrum in this band. It also summarizes the spectrum demand analysis which has recently been done in the UK and discusses its implications for spectrum management policy. This will help establish a policy direction for spectrum in low frequency bands in S. Korea.

The objective of this paper is to identify the effectiveness of mobile phone music services. We define the effectiveness as benefits/costs that mobile phone music services give us. Initial factors related to cost and benefit are derived through prior research. The type of mobile phone music services is classified into ringtone, ring-back tone, and music file downloading. An exploratory survey was used to gather the data for this study. Respondents rates each statement on a seven-point Likert-type scale. We perform a factor analysis and statistical analysis to derive significant factors and items. Through a sensitivity analysis, this paper suggest a plan to increase the effectiveness of mobile phone music services by each factor. The result shows that ring-back tone service and ringtone service are both effective. Particularly the ringback tone service is more effective than the ringtone service. The downloading service is not effective because the cost value is higher than the benefit value. We can conclude it is necessary to decrease the purchasing price of music files in order to increase the overall effectiveness of mobile phone music services.