• Journal of Information Technology Applications and Management
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• v.13 no.1
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• pp.149-166
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• 2006

During the past several years, a number of attempts have been made to develop computer applications for the farm business. However, none of them truned out properly applicable to small farms occupying more than 90% of the total agri-business in number as they failed to take it into consideration that small farm, typically a private busines is quite different by nature from the large-scaled farm corporate. Small-sized farming is usually done on the houshold basis, and thus there is no distinction between the household and the business economy. In addition, small farm managers are mostly lacking knowledge or skills of both computers and accounting. This study, therefore, aims at the design and implementation of the financial management and accountign information system for small farms, with an attempt to relax constraints and resolve pitfalls revealed in previously developed applications. The following principles were introduced for the study : 1) The user-system interfaces have to be managed in the natural language as much as possible, so that the users can operate the system without any professional terms. 2) Household accounting has to be seperarte by some means from the business accounting, so that small farm businesses can manage their finance and accounting as necessary. 3) The system has to be designed so as not only for the users to manage transactional data but to analyse historical data in multiple dimensions for their decision-makings. The results from this study would perhaps help not only for the farmers but for the educators, policy makers, and counselors for the farming.

• Management & Information Systems Review
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• v.32 no.1
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• pp.153-171
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• 2013

The subjects of following research were 663 medical practitioners working at hospitals or bigger sized medical facilities in Pusan. Among the entire research subjects, it was shown that medical practitioners are notably and positively affected when their supervisors' type of leadership was either servant leadership or transformational leadership. The types of leaderships of supervisors that are recognized by medical practitioners were transformational leadership, transactional leadership, servant leadership. The effect of supervisors' leadership according to different type of role are as following. Under the circumstance of no personal and controlled variables, the each group of different medical occupants showed notable positive effects. Nurses corresponded to transformational leaderships, while admission and discharge corresponded to servant leadership. At the same time, medical technicians were most effected by both servant and transformational leadership.

• The Journal of Society for e-Business Studies
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• v.19 no.1
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• pp.119-129
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• 2014

The renowned Pareto rule of 80/20 has been challenged in the electronic marketplace with the emergence of long tail economy. Mass customization on top of the Internet infrastructure is expected to explain these changes of product concentration. In this paper, we empirically analyzed the micro-transactional data of a Groupon-like daily deal web site to identify the changes of product and customer concentration. The results show the long tail pattern aligned with the previous research on the e-commerce literature on the long tail. We find that the notification setting on email or SMS about daily deal influences the patterns of sales concentration. The information through email and SMS is expected to enable consumers to know about daily bargains and purchase the coupons eventually. However, the email notification for niche products results in the decreased sales while the SMS notification for overall product promotes overall products.

• Journal of Gifted/Talented Education
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• v.19 no.1
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• pp.25-46
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• 2009

The purpose of this study was to investigate gifted students' gender difference in ego state and personality, the characteristics of the functional types and the temperable types in personality traits and relations between gifted students' ego state and their personality traits by Ego-gram test based on Borne's personality theory and MMTIC test based on Jung's psychological theory. The subjects of this study were 230 of gifted students of K Gifted Center, The data analyzed by chi-square, t-test, one-way anova in accordance with each research question. The results of this study can be used as the material data for academic and career counseling and for guidance in students' human relationships. The results showed that there were gender differences in the ego state and personality traits in two dimensions. Second, gifted students showed significant difference from Korean standardization in the functional types and the temperable types of personality. These results showed that there were solid relations between the types of ego-gram and personality of gifted students.

• Journal of KIISE:Databases
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• v.32 no.6
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• pp.650-661
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• 2005

As the Internet is growing, the use of XML which is a standard of semi-structured document is increasing. Therefore, there are on going works about integration and retrieval of XML documents. However, the basis of efficient integration and retrieval of documents is to cluster XML documents with similar structure. The conventional XML clustering approaches use the hierarchical clustering algorithm that produces the demanded number of clusters through repeated merge, but it have some problems that it is difficult to compute the similarity between XML documents and it costs much time to compare similarity repeatedly. In order to address this problem, we use clustering algorithm for transactional data that is scale for large size of data. In this paper we use common structures from XML documents that don't have DTD or schema. In order to use common structures of XML document, we extract representative structures by decomposing the structure from a tree model expressing the XML document, and we perform clustering with the extracted structure. Besides, we show efficiency of proposed method by comparing and analyzing with the previous method.

• Journal of KIISE:Databases
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• v.31 no.4
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• pp.422-431
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• 2004

In recent years, different models in data delivery have been explored in mobile computing systems. Particularly, there were a lot of research efforts in the periodic push model where the server repetitively disseminates information without explicit request. However, average waiting time per data operation highly depends on the length of a broadcast cycle and different access pattern among clients may deteriorate the response time considerably. In this case, clients are preferably willing to send a data request to the server explicitly through backchannel in order to obtain optimal response time. We call the broadcast model supporting backchannel as hybrid broadcast. In this paper, we devise a new transaction processing algorithm(O-PreH) in hybrid broadcast environments. The data objects which the server maintains are divided into Push_Data for periodic broadcasting and Pull_Data for on-demand processing. Clients tune in broadcast channel or demand the data of interests according to the data type. Periodic invalidation reports from the server support maintaining transactional consistency. If one or more conflicts are found, conflict orders are determined not to violate the consistency(pre-reordering) and then the remaining operations have to be executed pessimistically. Through extensive simulations, we demonstrate the improved throughput of the proposed algorithm.

• The Journal of the Korea Contents Association
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• v.13 no.9
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• pp.382-391
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• 2013

Crisis management is one of the most important tasks of any business as business environments have been dramatically changed. In a sense the ability to manage crisis effectively is connected to the survival of any organization, whether it be a nation or company. In case of a company, the ability depends on CEO's leadership styles. Though some research have internationally investigated the relationship between crisis management and CEO's leadership styles, few research has dealt with the issue. The purpose of this study was to investigate the role of CEO's leadership styles in the perception of the importance of corporate crisis management and the level of crisis management. A self-administered questionnaire was distributed to CEOs of various types of business and a total of 259 questionnaires were collected from them. But only 201 questionnaires were used for testing hypotheses after getting rid of incomplete ones. The result showed that CEO's leadership styles have different roles in the issues raised in this study. Implications and further research suggestions were discussed.

• Journal of KIISE:Databases
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• v.31 no.6
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• pp.699-709
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• 2004

XML is increasingly important in data exchange and information management. Starting point for retrieving the structure and integrating the documents efficiently is clustering the documents that have similar structure. The reason is that we can retrieve the documents more flexible and faster than the method treating the whole documents that have different structure. Therefore, in this paper, we propose the similar structure-based incremental clustering method useful for retrieving the structure of XML documents and integrating them. As a novel method, we use a clustering algorithm for transactional data that facilitates the large number of data, which is quite different from the existing methods that measure the similarity between documents, using vector. We first extract the representative structures of XML documents using sequential pattern algorithm, and then we perform the similar structure based document clustering, assuming that the document as a transaction, the representative structure of the document as the items of the transaction. In addition, we define the cluster cohesion and inter-cluster similarity, and analyze the efficiency of the Proposed method through comparing with the existing method by experiments.

• Journal of Korea Society of Industrial Information Systems
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• v.5 no.3
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• pp.1-9
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• 2000

Computer-based systems operating between two or more co-operating organizations as part of their business relationship are genera11y referred to as inter-organizational systems(IOS). IOS automate aspects of transactional work between organizations and coordinate other activities. Consequently, the design, construction and maintenance of IOS require substantial planning and sensitivity to these broader issues. This paper demonstrates that IOS planning is still in its infancy, though there is widespread agreement as to the desired results from IOS planning and how it should be conducted. In general, there is an over-reliance on traditional information systems planning approaches and the majority of organizations experience difficulties with IOS planning.

• Journal of KIISE:Software and Applications
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• v.32 no.9
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• pp.888-900
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• 2005

Several researches have been proposed to formalize the knowledge preconditions problem - j.e., an action or a plan is epistemically feasible. However, since the feasibility is only checked at design-time and is assumed that it will also 1)e feasible at run-time, it is not suitable in the context of Semantic Web services composition, where many agents should share the limited resources required for the execution of Web services composition. Therefore, in this paper, we formalize a transactionally executable Web services composition which enables to guarantee its atomicity. Moreover, in order to formalize the transactional executability, we propose $TL-ALCFK_{NF}$ which extends TL-ALCF with the modal operators K and A. Based on $TL-ALCFK_{NF}$, we show how to carry out the epistemic reasoning with TL-ALCF as a language to represent Semantic Web services composition.