• Proceedings of the Zoological Society Korea Conference
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• 1999.10b
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• pp.83.1-83
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• 1999

No Abstract, See Full Text

• Proceedings of the Zoological Society Korea Conference
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• 1996.10a
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• pp.269.2-269
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• 1996

No Abstract, See Full Text

• Proceedings of the Korean Magnestics Society Conference
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• 2002.04a
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• pp.148-149
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• 2002

No Abstract, See Full Text

• Proceedings of the Zoological Society Korea Conference
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• 1996.10a
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• pp.136.1-136
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• 1996

No Abstract, See Full Text

• The KIPS Transactions:PartB
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• v.12B no.6 s.102
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• pp.703-714
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• 2005

Researches in text categorization have been confined to whole-document-level classification, probably due to lacks of full-text test collections. However, full-length documents availably today in large quantities pose renewed interests in text classification. A document is usually written in an organized structure to present its main topic(s). This structure can be expressed as a sequence of sub-topic text blocks, or passages. In order to reflect the sub-topic structure of a document, we propose a new passage-level or passage-based text categorization model, which segments a test document into several Passages, assigns categories to each passage, and merges passage categories to document categories. Compared with traditional document-level categorization, two additional steps, passage splitting and category merging, are required in this model. By using four subsets of Routers text categorization test collection and a full-text test collection of which documents are varying from tens of kilobytes to hundreds, we evaluated the proposed model, especially the effectiveness of various passage types and the importance of passage location in category merging. Our results show simple windows are best for all test collections tested in these experiments. We also found that passages have different degrees of contribution to main topic(s), depending on their location in the test document.

• Spatial Information Research
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• v.1 no.1
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• pp.17-28
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• 1993

In order to minimize vectorizing tasks, which require huge reso¬urces and time and to support the census mapping effectively, the geographic information databases structure has been studied. The steps of the new approach are as follows. : Step 1, Scanning the maps of the whole country and storing the image data in raster format. Step 2, Vectorizing the data of specific items for Census operation such as Enume¬ration District, and then linking to attribute data in the text format. Step 3, Designing the database with a Tile and Multi-layer structure to make a continuous map logically. Step 4, Implement Censlls Mapping System(CMS) for efficient mapping and retrieving. As a consequence of this study, the cost, manpower and time effectiveness was proved and it was confirmed to produce lIseful and high-qual ified maps for the Census. In the future, this system wi II be able to provide many organizations and individuals with the various data based on geographical statistical information.

• Hwankyungkyoyuk
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• v.14 no.2
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• pp.1-14
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• 2001

This study analyzed and compared the number of students activities, contents scope, and organizing system of the three textbooks(A, B, and C) which had been developed and published for the 'Environment'subject in the 7th National Curriculum. The results of this study can be summarized as follows; There were differences in the size, the total number of pages and the quality of print between two groups of 'Environment'textbooks of the 6th and the 7th national curriculum. New textbooks were found bigger than the previous ones by 125%. The total number of pages increased by the average of 16.4%. A and C textbooks were composed of three parts, seven chapters, and 17 sections, whereas B textbook consisted of ten chapters and 23 sections. All of the three textbooks appeared to put an emphasis on the chapters of 'environment protection'and 'environmental problems of the Earth ' A comparative analysis on the number of data included in the three textbooks showed that almost half of data took a form of picture, averaging 48% of the total. A had 297 pictures, and 234 pictures for B, 194 pictures for C, respectively. In terms of the number of students'activities, C was found to include the largest number of activities that is 91, comparing to text A of 85, text B of 78. The number of students'activities in every content is found'environment awaiting protection', tile 'environmental problems of the earth'and'things to be done for the protection of environment'much more than any other parts. It should be noted that this study focused ell only a set of quantitative measures so that teachers are recommended to consider detailed contents that each textbook contains as well as environmental conditions of the school region.

• Convergence Security Journal
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• v.11 no.3
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• pp.25-30
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• 2011

WEP is proposed networks dominate the market in the future wireless LAN encryption and authentication features to provide a secure protocol. However, WEP does not suggest a specific measures when generating the initial values used for the creation cipher text, the initial value problem because tile size and no-encryption if you have been raised about the safety issue. In this paper pointed out the vulnerabilities of WEP and the proposed improvement plan for this improvement was proposed based on the initial value to avoid re-creating the initial value of the system and using a block cipher in CBC mode for confidentiality and to provide mutual authentication New WLAN security model was proposed.

• Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
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• v.27 no.2
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• pp.195-202
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• 2009

As the generation and application of spatial information is gradually expanded not only in traditional surveying fields but also a CNS and an ITS recently. The Accuracy and the newest of data grow to be an important element. But digital map is updated with system based tile. So, it is hard to get the newest of data and to be satisfied with user requirements. In this study, management system is developed to manage feature change efficiently using bid informations from NaraJangter which service the bid informations. A construction works with change possibility of feature from bid informations are classified and are made DB. And the DB is used as the feature change forecast informations. Also, It is converted from bid information of text form to positioning informations connected to spatial information data. If this system is made successfully, this system contributes to reduce the cost for the update of digital map and to take the newest date of spatial informations.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.11 no.3
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• pp.592-599
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• 2007

The advancement of wireless technology improves the electronic learning by combining with the mobile function, and promotes the expanded transition to the mobile learning. Basically, the mobile learning provides the usefulness in terms of tile and space to provide learners with the access to the educational contents. However, the small display device and limited memory space of mobile device is limiting the access to the learning contents simply to the text-based transmission. This paper designed and implemented the multimedia mobile learning system that reduces the size of parser by define into MSMIL composed only of needed tag to multimedia contents production in the mobile devices by using the SMIL that supports the multimedia object synchronization reduces the data of multimedia learning data and enhances the transmission efficiency by applying the macro method in creating the contents of learning. The results of implementation indicates that it simplifies the designing language, makes the language learning easy, and saves the CPU resources for the parsing by reducing the size of parser.