• Proceedings of the Korean Operations and Management Science Society Conference
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• 2001.10a
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• pp.383-386
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• 2001

In this paper, we propose a new personalized information service method using multiple regression analysis for Internet shopping malls. We then apply the proposed method to Internet bookstore, and compare personalized Internet bookstore providing personalized book information with ordinary Internet bookstore providing random book information. Experiment results show that the personalization of Internet bookstore increases satisfaction and purchasing intent of customers.

• Journal for History of Mathematics
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• v.29 no.4
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• pp.233-242
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• 2016

The painter Leon Battista Alberti insisted that mathematics was very important in painting in his famous book "Della Pittura(On Painting)" at 15th century. At the first part of the book, he explained about points, lines, and planes mathematically. And he emphasized that the proportion was very useful for accurate description of objects. This is the perspective that Alberti showed by using visual pyramid. In this paper, we investigate the Alberti' s method and the background of Alberti's perspective.

• 한국HCI학회:학술대회논문집
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• 2009.02a
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• pp.493-496
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• 2009

Many AR (Augmented Reality) applications have been interested in a marker-less tracking since the tracking methods give camera poses without attaching explicit markers. In this paper, we propose a new marker-less page recognition and tracking algorithm for an AR book application such as DigilogBook. The proposed method only requires orthogonal images of pages, which need not to be trained for a long time, and the algorithm works in real-time. The page recognition is done in two steps by using SIFT (Scale Invariant Feature Transform) descriptors and the comparison evaluation function. And also, the method provides real-time tracking with 25fps ~ 30fps by separating the page recognition and the frame-to-frame matching into two multi-cores. The proposed algorithm will be extended to various AR applications that require multiple objects tracking.

• Journal of the Korean Society for Library and Information Science
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• v.40 no.1
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• pp.373-395
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• 2006

The writer investigated the academic values of the titles based upon book annotations included in Gunseo-pyogi, or An Annotated Catalog of books written and edited by the goverment. This paper examined various types of evaluative methods adopted in Gunseo-pyogi, and then compare them to the modern general library criteria of book selection. The writer found the fact that the academic qualifies of books listed in Gunseo-pyogi were even more excellent than the modern criteria for good books in the point of level of authors and contents.

• Journal of Korean Medical classics
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• v.30 no.2
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• pp.31-43
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• 2017

Objectives : Written by Yoongdongri in the 18th century Chosun, Chochangkyeul is a book that specially deals in Ungi. Yoon understood a person's body constitution by taking into factor the person's birth year, and used this information to determine his Ungi type, and understood his disease mechanism. Methods : Following the study on the first part of Chochangkyeul, named Ungiyeonron, the paper tries to study the book's second part, called Yongyakgwon. The book's core messages are summarized upon a thorough inspection. Results & Conclusions : Yoondongri was a highly-acclaimed doctor in the 18th century Chosun, and also an Ungi practitioner who utilized the theory of Ungi in his clinical practices. His practices were mainly based on the prescription of Ungi found in Chenwuze's Sanyinfang, coupled with almost all parts of Donguibogam's Husebang. He had an extensive clinical experience which helped him describe his methods of quickly responding to the side effects that sometimes occur due to misuse of medicine. Such detailed descriptions are never found in past medical books, which gives Yoon's book a great level of historical importance. Yongyakgwon divides the scripts between Gabsin, Muui, Byungye, Gyungjeong, and Yimgi in accordance with the theory of Ounhabgi, and also introduces treatments based on Yukisachun. Jangbupasuyak also introduces about six external organs and six internal organs with relation to treating wind medicine, treating heat medicine, treating cold medicine, treating dry dampness medicine, dryness-moistening medicine, pulling meridian medicine. All of these can be applied to patients easily.

• The Journal of Asian Finance, Economics and Business
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• v.7 no.9
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• pp.271-281
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• 2020

This study aims to investigate whether and why the disclosure of full financial information to estimate taxable income (TI) is incrementally useful for investors' decision making at earnings announcements. This paper shows analytically that the information content of TI beyond book income is determined by the relative informativeness of TI exceeding that of book-tax differences (BTDs), and therefore should be affected by the earnings quality of TI relative to BTDs. This study collects data on earnings announcements from Korean listed firms and employs multiple regression tests for earnings persistence, a major indicator of earnings quality, of TI and BTDs and their information content. The empirical test results show that TI is more persistent than BTDs for the entire sample in this study. Further, the investors' reaction to TI is greater than that to BTDs, and the market response to TI controlling for BI is positive. However, the market test results are significantly observed only in the subsample group with full disclosure of financial statements, not in the samples with disclosure of aggregated earnings only. In sum, this study provides new evidence that the TI information obtained from a detailed earnings announcement is useful for investors in addition to book income.

• The Journal of Korean Medical History
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• v.33 no.2
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• pp.23-36
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• 2020

In this paper, we look at the basic bibliographic details, such as the publication period, of the 20th century Joseon dynasty royal prescription book, Eoyong Tangjechaeg (御用湯劑冊). Through the process of searching for the royal family members who were given the prescriptions from the royal prescription book, as well as the doctors who gave the prescription, we aim to study its purpose as well as its value in terms of medical history. By studying this piece of medical literature, we will be able to shed light on the Joseon dynasty's royal Korean medicine practices as it passed through the turbulence of history during times such as the Korean Empire (1897-1910) and the Japanese colonial era (1910-1945). We illustrate the changes that took place in royal Korean medicine at the time, and also consider the trends of royal prescriptions as well as their significance from a Korean medicinal standpoint.

• Journal of Digital Contents Society
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• v.12 no.3
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• pp.329-337
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• 2011

Digital talking book has been developed to enhance reading experiences for reading-disabled people. In the existing digital talking book, however, annotations can be created only through the screen interfaces. Screen annotation interfaces is of no use for reading-disabled people because they need reader's eyesight. In this paper, we suggest a voice annotation technique can create notes and highlights at any playing time by using hearing sense and voice command. We design a location determination technique that pinpoints where a voice annotation should be placed in the playing sentences. To verify the effectiveness of our voice annotation technique, we implement a prototype in an android platform. We can find out by the black-blindfolded users testing that our system can perfectly locate the exact position that a voice annotation should be placed into.

• Journal of Digital Contents Society
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• v.18 no.2
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• pp.257-266
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• 2017

Recently, a variety of books have been published in various fields, and the range of selection for both online and offline bookstores have been widened. However, there is a vinyl packaging phenomenon to prevent damage being made to the books in bookstores. This makes it difficult to have a look through on the contents of the book, affecting consumers' purchasing decisions. These factors causes the annual average reading volume to decrease. Therefore, in this paper, we would like to propose a "bookmark" application to provide consumers with book information service using AR and Marker technology, tackling the decrease in sales caused by the problem.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2016.10a
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• pp.337-339
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• 2016

In this paper, we researched the excellency of 3D graphic nursery contents for humanity and creativity education which is developed by mobile AR technology. AR technology has currentlypeople's attention because of the potential of future core contents. We allpied AR technology for kid's education of language, humanity and creativity. Well known nursery tales reconstructed by ICT technology give absorbing interest to kids, lead the curiosity of leading edge technology and friendly accept it as a part of daily life.