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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
> Journal Vol & Issue
Journal of the Korea society of IT services
Journal Basic Information
Journal DOI :
The Korea Society of Information Technology Services
Editor in Chief :
Lim Gyu Geon
Volume & Issues
Volume 15, Issue 2 - Jun 2016
Volume 15, Issue 1 - Mar 2016
Selecting the target year
A Study of the Competitive Factors of ICT Venture and SMEs in the Global Digital Ecosystem
Lee, Kae Soo ; Yoon, Heon-Deok ;
Journal of the Korea society of IT services, volume 15, issue 1, 2016, Pages 1~18
DOI : 10.9716/KITS.2016.15.1.001
Recently, in the bio-field success stories of ventures through a biosimilar technology is being excavated. but the growth of ICT industry has been stagnant since reaching a boom in the dissemination of early high-speed internet in 2000s. The purpose of this study is to explore the factors of change of business model and business strategy of ICT ventures and SMEs with the evolution of the digital ecosystem, and to drive the factors to be competitive on the global value chain. The researcher selected an entreprenuership, market-innovation orientation, technology-innovation orientation, and Administration-innovation orientation as internal factors influencing the global competence and healthiness of the ecosystem as external factors. The researcher applied samples of 94 ICT Venture and SMEs to a research model, and adopted 5 hypotheses. The researcher believes that only a few hypotheses were adopted because it takes time for overall innovation orientation of ICT Venture and SMEs to result in the real global competence as the their innovation orientation is still on the level of domestic market. And the researcher also thinks that only healthiness of the ecosystem affected management performances because the companies' performances of the last 3 years were so weak that the correlation between innovation orientation of each company and the performances were not big enough.
The Effect of Consumer Characteristics on Exploratory Information Search and Information Use Behavior
Kim, Ah-Reum ; Kang, Hyunjeong ;
Journal of the Korea society of IT services, volume 15, issue 1, 2016, Pages 19~37
DOI : 10.9716/KITS.2016.15.1.019
Competing Market, Bureaucratic and Professional Work Logics in the Design and Implementation of IT on Professional Work : The Case of Medicine
Chiasson, Mike ; Kumar, Nanda ;
Journal of the Korea society of IT services, volume 15, issue 1, 2016, Pages 39~66
DOI : 10.9716/KITS.2016.15.1.039
There is growing evidence that professional work is changing as a result of the application of information technology (IT). However, the impact of information technology on professional work has produced mixed results. Our paper considers the source of these mixed results through a greater analytical attention paid to the nature of professional work. Defined as work involving expertise expressed through abstract and formalized knowledge as well as extensive working knowledge, the professional work logic assumes the greatest autonomy and discretion for workers in collectively controlling work characteristics-division of labor and its permanence, control over education, and control over new entrants and the monitoring and disciplining of existing members. The impact of IT on professional work will be difficult to control and predict without considering the assumptions and tensions within and across the three major types of work logics (Professional, Market and Bureaucratic). Using healthcare as an example, the paper provides various propositions for researching the initiation and effects of ICT design through these three work logics. These propositions illustrate the active role that IS researchers can take in researching an important economic and work-related topic, professional work, and in understanding how ICT affects work-related expertise.
A Study on North Korea's Cyber Attacks and Countermeasures
Chung, Min Kyung ; Lim, Jong In ; Kwon, Hun Yeong ;
Journal of the Korea society of IT services, volume 15, issue 1, 2016, Pages 67~79
DOI : 10.9716/KITS.2016.15.1.067
This study aims to present the necessary elements that should be part of South Korea's National Defense Strategy against the recent North Korean cyber-attacks. The elements proposed in this study also reflect the recent trend of cyber-attack incidents that are happening in the Unites States and other countries and have been classified into the three levels of cyber incidents: cyberwarfare, cyberterrorism and cybercrime. As such, the elements proposed are presented in accordance with this classification system. In order to properly take into account the recent trend of cyber-attacks perpetrated by North Korea, this paper analyzed the characteristics of recent North Korean cyber-attacks as well as the countermeasures and responses of South Korea. Moreover, by making use of case studies of cyber-attack incidents by foreign nations that threaten national security, the response measures at a national level can be deduced and applied as in this study. Thus, the authors of this study hope that the newly proposed elements here within will help to strengthen the level of Korea's cyber security against foreign attacks, specifically that of North Korea such as the KHNP hacking incidents and so on. It is hoped that further damage such as leakage of confidential information, invasion of privacy and physical intimidation can be mitigated.
Efficacy of Mobile Device Distribution Improvement Act : Long-term Contract and Cap Regulation on Breach Fee
Kim, Weonseek ;
Journal of the Korea society of IT services, volume 15, issue 1, 2016, Pages 81~96
DOI : 10.9716/KITS.2016.15.1.081
This study analyzes how breach fee under long-term contract and/or cap regulation on the breach fee can affect the impacts of "Mobile Device Distribution Improvement Act" on handset bundle price, average revenue per unit (ARPU), and social welfare. We conduct comparative analysis with an economic model of duopoly competition in price when users are under long-term contract and the breach fee can be regulated. The results show that the Act lowers the equilibrium prices, lower than incumbent price without the Act. Price of non-dominant Mobile Network Operator (MNO) can be lower than poaching price without the Act if significant portion of switching cost is breach fee or the market is significantly asymmetric. Under the significant circumstances, the Act can raise ARPU even though it improves social welfare. By contrast, the Act increases consumer surplus without affecting social welfare if breach fee is the only source of user's switching cost and is capped by the regulation, and more symmetric market and the stronger cap leads to higher consumer surplus.
Methodological Implications of Employing Social Bigdata Analysis for Policy-Making : A Case of Social Media Buzz on the Startup Business
Lee, Young-Joo ; Kim, Dhohoon ;
Journal of the Korea society of IT services, volume 15, issue 1, 2016, Pages 97~111
DOI : 10.9716/KITS.2016.15.1.097
In the creative economy paradigm, motivation of the opportunity based startup is a continuous concern to policy-makers. Recently, bigdata anlalytics challenge traditional methods by providing efficient ways to identify social trend and hidden issues in the public sector. In this study the authors introduce a case study using social bigdata analytics for conducting policy analysis. A semantic network analysis was employed using textual data from social media including online news, blog, and private bulletin board which create buzz on the startup business. Results indicates that each media has been forming different discourses regarding government's policy on the startup business. Furthermore, semantic network structures from private bulletin board reveal unexpected social burden that hiders opening a startup, which has not been found in the traditional survey nor experts interview. Based on these results, the authors found the feasibility of using social bigdata analysis for policy-making. Methodological and practical implications are discussed.
An Analysis of the Effects of Knowledge Complementarities on the Performance of Information System Audit : A Perspective of the Resident Audit in the Project Office
Jang, Ji Yeon ; Kim, Choong Nyoung ;
Journal of the Korea society of IT services, volume 15, issue 1, 2016, Pages 113~129
DOI : 10.9716/KITS.2016.15.1.113
Recently, as Information System projects tend to be more complex, the importance of Information System Audit increases. In the same context, the need for the resident IS Audit also increases, which is supposed to deal with the possible risks and urgent issues by providing the appropriate support and timely coordination during IS project. Basically, for the effective IS Audit, the IS audit team members should be able to understand such a business context as work characteristics, business knowledge, goals, and culture of the organization. The audit team members should also be able to share the various knowledge of Information Technology and audit procedure with the owner of the project. Especially, for the resident audit, it is more important to fill the gaps in expertise between project owner and audit team. However, any studies on the need of common knowledge base (knowledge complementarities) in the IS audit have not been done so far. The purpose of this study is to analyze whether the knowledge complementarity based on inter-organizational communication between the project owner and audit team members makes an effect on the fidelity and performance of IS audit. In order to do this, the relationship among inter-organizational communication and knowledge complementarity, the fidelity of IS audit service, and performance of IS audit has been analyzed, using Structural Equation Model. The result shows that all the relationship is significant, which means that knowledge complementarity between the two different interest groups should be an effective factor on the fidelity and performance of IS audit. This result implies that, for better quality of IS Audit service, how to acquire the knowledge complementarity between the project owner and Audit team should be considered seriously as well as systematically in the process of IS Audit.
Exploiting Group Social Capital in Systems Development Projects
Park, Jun-Gi ; Lee, Seyoon ; Lim, Gyoo Gun ; Lee, Jungwoo ;
Journal of the Korea society of IT services, volume 15, issue 1, 2016, Pages 131~152
DOI : 10.9716/KITS.2016.15.1.131
Group social capital can be defined as an intangible asset that promotes knowledge sharing and social interaction. It is posited here that the group social capital raised and nurtured among group members positively influences on team performance in IS (Information Systems) development projects. And communication effectiveness is selected as a critical antecedent and its detailed relationships with the dimensions of group social capital are analyzed. Effective communication plays important role in ISD project teams by integrating knowledge from different areas. Moderating effects of project phase between the sub-dimensions of social capital and project performance are investigated. Hypotheses are tested using data from 131 project teams of 85 manufacturing firms. The results indicated that Communication effectiveness positively impacted sub-dimensions of social capital (social ties, trust, and shared vision). Moreover, the team performance is influenced by shared vision and trust, leaving social ties as a leading subcontract, as theoretically proposed in prior research. The project phase moderates the impact of shared vision on team performance.
Randomized Bagging for Bankruptcy Prediction
Min, Sung-Hwan ;
Journal of the Korea society of IT services, volume 15, issue 1, 2016, Pages 153~166
DOI : 10.9716/KITS.2016.15.1.153
Ensemble classification is an approach that combines individually trained classifiers in order to improve prediction accuracy over individual classifiers. Ensemble techniques have been shown to be very effective in improving the generalization ability of the classifier. But base classifiers need to be as accurate and diverse as possible in order to enhance the generalization abilities of an ensemble model. Bagging is one of the most popular ensemble methods. In bagging, the different training data subsets are randomly drawn with replacement from the original training dataset. Base classifiers are trained on the different bootstrap samples. In this study we proposed a new bagging variant ensemble model, Randomized Bagging (RBagging) for improving the standard bagging ensemble model. The proposed model was applied to the bankruptcy prediction problem using a real data set and the results were compared with those of the other models. The experimental results showed that the proposed model outperformed the standard bagging model.
Malicious Users Detection and Nullifying their Effects on Cooperative Spectrum Sensing
Prasain, Prakash ; Choi, Dong-You ;
Journal of the Korea society of IT services, volume 15, issue 1, 2016, Pages 167~178
DOI : 10.9716/KITS.2016.15.1.167
Spectrum sensing in cognitive radio (CR) has a great role in order to utilize idle spectrum opportunistically, since it is responsible for making available dynamic spectrum access efficiently. In this research area, collaboration among multiple cognitive radio users has been proposed for the betterment of detection reliability. Even though cooperation among them improves the spectrum sensing performance, some falsely reporting malicious users may degrade the performance rigorously. In this article, we have studied the detection and nullifying the harmful effects of such malicious users by applying some well known outlier detection methods based on Grubb's test, Boxplot method and Dixon's test in cooperative spectrum sensing. Initially, the performance of each technique is compared and found that Boxplot method outperforms both Grubb's and Dixon's test for the case where multiple malicious users are present. Secondly, a new algorithm based on reputation and weight is developed to identify malicious users and cancel out their negative impact in final decision making. Simulation results demonstrate that the proposed scheme effectively identifies the malicious users and suppress their harmful effects at the fusion center to decide whether the spectrum is idle.
The Effect of Emotional Intelligence on Job Satisfaction in China IT Corporation : The Mediating Effect of Organization Culture Awareness
Choi, Suheyong ; An, Na ;
Journal of the Korea society of IT services, volume 15, issue 1, 2016, Pages 179~195
DOI : 10.9716/KITS.2016.15.1.179
Popular business magazines continue to highlight the employee's emotional intelligence in the organization. The purpose of this study is to explore a mediation mechanism of the relationship between emotional intelligence and job satisfaction in China IT corporation. For this, this study focused on examining the influential relationship between employee's emotional intelligence, Awareness of Self-Emotion, Awareness of other-Emotion, Emotion management, Emotion Control and job satisfaction and the mediating effect of organization culture awareness upon the relationship. Study findings are as follows : First, China IT corporation employee emotional intelligence has a significant positive(+) effect on job satisfaction and is partially supported organization culture awareness. Second, organization culture awareness has partially mediated effect on relationship between emotional intelligence and job satisfaction. In this study, the more employee's emotional intelligence have a positive impact on job satisfaction and organizational culture. We can designing a support program that emotional intelligence and organization culture awareness for China IT corporation employees will have direct influence upon job satisfaction. Employee's great talent to make good use of elements of emotional intelligence that promote the work environment and their's condition and the relationship between employee and employee.
A Method of Predicting Service Time Based on Voice of Customer Data
Kim, Jeonghun ; Kwon, Ohbyung ;
Journal of the Korea society of IT services, volume 15, issue 1, 2016, Pages 197~210
DOI : 10.9716/KITS.2016.15.1.197
With the advent of text analytics, VOC (Voice of Customer) data become an important resource which provides the managers and marketing practitioners with consumer's veiled opinion and requirements. In other words, making relevant use of VOC data potentially improves the customer responsiveness and satisfaction, each of which eventually improves business performance. However, unstructured data set such as customers' complaints in VOC data have seldom used in marketing practices such as predicting service time as an index of service quality. Because the VOC data which contains unstructured data is too complicated form. Also that needs convert unstructured data from structure data which difficult process. Hence, this study aims to propose a prediction model to improve the estimation accuracy of the level of customer satisfaction by combining unstructured from textmining with structured data features in VOC. Also the relationship between the unstructured, structured data and service processing time through the regression analysis. Text mining techniques, sentiment analysis, keyword extraction, classification algorithms, decision tree and multiple regression are considered and compared. For the experiment, we used actual VOC data in a company.
The Effect of Individual's Flow and Stress on Subjective Well-being in Social Network Services
Koh, Joon ; Lee, Sung-Jun ; Lou, Liguo ;
Journal of the Korea society of IT services, volume 15, issue 1, 2016, Pages 211~226
DOI : 10.9716/KITS.2016.15.1.211
Most of the SNS users argue that they feel techno-stress or digital fatigue when they use SNS. As the relationships in the SNS expand, users may feel work overload, digital fatigue, and techno-stress which are caused by the time and effort for the retaining the existing relationships established via SNS. The SNS activities require users' time and effort to update their profiles and the current news of them, responding to online friends' contents. Thus, more relationships they have, more stress they can feel. This study tries to examine the key factors that can affect subjective well-being of individuals in Social Network Service (SNS) usage. Therefore, this study, based on the previous literature, investigates what the sources of SNS stress are and how SNS stress and flow affect subjective well-being of SNS users. Major findings of this study from an empirical analysis with 201 SNS user respondents who have accessed SNS at least one time within one month are as follows. First, perceived opportunity cost and reputation recognition in SNS usage were found to have significant effects on negative emotion. Second, individual's flow in SNS was significantly affected by challenges and interactions, and had a significant impact on positive emotion. However, SNS users' flow did not show a positive relationship with their satisfaction of life. This study contributes to the expansion of theoretical discussion about the effect of individual's SNS usage on quality of life in validating whether SNS usage can bring individuals subjective well-being. Implications of the study findings and future research directions are also discussed.
A Study on the Effect of the IoT Technology on SCM
Lee, Kangbae ; Baek, Daehan ; Kim, Doohawn ;
Journal of the Korea society of IT services, volume 15, issue 1, 2016, Pages 227~243
DOI : 10.9716/KITS.2016.15.1.227
In order to maximize profitability by optimizing the entire supply chain process, enterprises have made efforts to apply IT technologies such as POS, MES, and TMS. In addition, academic societies have also made efforts to verify the effects of IT technology introduction through various researches. However, until now, there is almost no research that analyzes the relationship between the IoT, a new IT technology, and the SCM. To study the effect of IoT technology on SCM, this study conducted professional Delphi surveys for three times. Through this method, this study analyzed changes that will be caused by the IoT technology, the priority area in IoT introduction, and the expected difficulty in IoT introduction on SCM. As a result of the Delphi surveys and analyses, it was expected that when IoT technology is introduced, the level of SCM's IT use and partnership will increase. However, the effect of the increased performance of the supply chain, which includes inventory management and quality control, will become weaker. The reason is that the development of operation and management skills, as well as the improvement of IT technology, are also important elements for the performance improvement of the supply chain. As for the priority area in IoT introduction, it was expected that the effect will be greater when IoT is introduced in customer service, transportation, and delivery areas. As difficulties in IoT technology introduction, such as the shortage of IoT platform development personnel, standardization, integration with the existing system, securing professional manpower, expenses, data management, and operation, were derived, it has thus become necessary for us to exert greater efforts in order to come up with solutions.
A Recognition Method for Korean Spatial Background in Historical Novels
Kim, Seo-Hee ; Kim, Seung-Hoon ;
Journal of the Korea society of IT services, volume 15, issue 1, 2016, Pages 245~253
DOI : 10.9716/KITS.2016.15.1.245
Background in a novel is most important elements with characters and events, and means time, place and situation that characters appeared. Among the background, spatial background can help conveys topic of a novel. So, it may be helpful for choosing a novel that readers want to read. In this paper, we are targeting Korean historical novels. In case of English text, It can be recognize spatial background easily because it use upper and lower case and words used with the spatial information such as Bank, University and City. But, in case Korean text, it is difficult to recognize that spatial background because there is few information about usage of letter. In the previous studies, they use machine learning or dictionaries and rules to recognize about spatial information in text such as news and text messages. In this paper, we build a nation dictionaries that refer to information such as 'Korean history' and 'Google maps.' We Also propose a method for recognizing spatial background based on patterns of postposition in Korean sentences comparing to previous works. We are grasp using of postposition with spatial background because Korean characteristics. And we propose a method based on result of morpheme analyze and frequency in a novel text for raising accuracy about recognizing spatial background. The recognized spatial background can help readers to grasp the atmosphere of a novel and to understand the events and atmosphere through recognition of the spatial background of the scene that characters appeared.
The Study on a Notification Service for Preventing Accidents Using an Analysis for Stress of Enlisted Men in Korean Army
Moon, Hoseok ; Im, Yooshin ;
Journal of the Korea society of IT services, volume 15, issue 1, 2016, Pages 255~268
DOI : 10.9716/KITS.2016.15.1.255
The purpose of this paper is to propose a notification service for preventing unexpected accidents which will be occurred by enlisted men's stress in Korean Army. For this purpose we first evaluate the enlisted men's stress with reliable evaluation tools through survey. A representative sample size of about 1,500 enlisted men from all seven unit types was selected and surveyed considering types of unit, ranks, and regional characteristics. In the second, we analyse the results of level of stresses and stress reactions to distinguish high potential enlisted men who will happen to accident. Through the second step, we know enlisted men's stress reactions are different depending their unit types. Therefore the basic information about their stresses will be judged respectively according to their unit types. In the final step, we propose a notification service that offer the information about high potential enlisted men who will happen to accident to their managers rapidly through military Intranet and information systems. Their managers will get the previous information about occurrence of unexpected accidents and have time to check various things before they are occurred. We hope the proposed service contributes to prevent unexpected accidents and reduce the effort of military managers. Furthermore this paper offers several recommendations to apply the proposed service to Korean Army.
A Study on Mobile Application Advertising Users' Perceived Perception and Service Recovery
Kang, Moonyoung ; Chi, Yongshou ; Lim, Sungeun ; Han, Kyeongseok ;
Journal of the Korea society of IT services, volume 15, issue 1, 2016, Pages 269~287
DOI : 10.9716/KITS.2016.15.1.269
In general, service failure occurs inevitably and the customers who experienced the greater dissatisfaction have the higher expectations of service recovery. However, most of the previous studies have focused on the evaluation and risk factors of pre-service quality. Thus, this study is contrary to the numerous previous studies and focus on the effectiveness of mobile application advertisement users' perceived perception on service recovery after service fails. A research model presented in this study is based on the Equity Theory and deeply evaluated the effectiveness of Distributive Justice, Interactional Justice, and Authenticity Relevance on Service Recovery. The survey of this study was conducted among 286 users who have experienced a services recovery of mobile application advertising. As a result, among all the factors of users of mobile application advertising, Distributive Justice, Interactive Justice, and Relevance have a positive impact to Satisfaction. In addition, Distributive Justice, Authenticity and Satisfaction also have a positive impact to Trust. Ultimately, Satisfaction and Trust have a positive impact to Service Recovery. The results of this study are expected as a reference for presenting a new business model for mobile application advertising industry, reducing business risk and enriching the related researches.
A Case Study on Mobile Information Systems for Foreign Tourists based on Micro Webpages
Han, Sangsuk ; So, Sun Sup ; Eun, Seongbae ;
Journal of the Korea society of IT services, volume 15, issue 1, 2016, Pages 289~298
DOI : 10.9716/KITS.2016.15.1.289
There are continuos tendencies toward that foreign tourists increase. Since 55% of them visit Korea without data communication for saving the communication costs, they can not utilize a variety of O2O services through QR/NFC/Beacon. There have been some researches to provide a smart map service based on the micro webpage technology even without data communication. But, they do not suggest how the templates are retrieved into their smart-phones. In this paper, we describe a mobile tourist information system for those who have no data communication. We utilize the micro webpage technology to develop a system for market promotion, shopping goods, and tourist maps. What matters in the micro webpage techniques is that the templates should be already downloaded to the users' smart phones before using it. The preceeded research did not mention the problem. We suggest a scheme that tourists obtain the tremplates in the information offices on the spot through Wi-Fi. We describe the details of the system, and evaluate the data overhead of templates and the time to be downloaded. We show that the overheads are endurable, which means that the system would be working well.
Conceptual Typology for Platform Service Ecosystems
Kim, Dohoon ;
Journal of the Korea society of IT services, volume 15, issue 1, 2016, Pages 299~319
DOI : 10.9716/KITS.2016.15.1.299
This study first introduces platform services and their business models. On the basis of the concepts of business ecosystem, we present a framework for distinguishing types of the platform service business models. Two key characteristics of business ecosystems-ecosystem configuration and value production process-are employed as fundamental dimensions for constructing typology. In particular, we also present the notion of value ecosystem, where not a single platform provider but a federation of platforms constitutes a virtual platform and completes a service system. The value ecosystem represents two distinct types of platform service business models : meta-platform ecosystem and platform coalition ecosystem. They show different governance structure in the platform federation and service flows across the ecosystem. We present detailed analyses of these two value ecosystems focusing on relevant cases of e-payment FinTech : Apple Pay as an example of meta-platform and Kakao Pay for platform coalition. Our conceptual typology contributes to platforms' proper strategy formulation and presents policy implications to, for example, platform neutrality.