• The Journal of Society for e-Business Studies
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• v.16 no.3
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• pp.145-158
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• 2011

Recently, the rapidly increased use of smartphone devices provides both opportunity and problems at the same time to the telecom companies in domestic and world wide. It provides a great opportunity to overcome the market stagnation of the existing voice- centric communications, and also problems of building a highly efficient new wireless access networks to accommodate huge volume of data traffic among smart devices. Facing with the age of keen competition, telecom companies have two kinds of strategies for network transition; a strategy of building uniform LTE -based 4G networks as fast as possible, and a hybrid network enhancement strategy compounding 3G and 4G networks using HSP A+, WiFi, cloud computing, etc. It is difficult to predict which strategy will have more successful outcome in the near future. This paper studies the trends and issues of network enhancement policies and transition strategies to the 4G network era, and tries to draw appropriate and efficient ways for network enhancement and operation.

• Herbal Formula Science
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• v.10 no.1
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• pp.41-55
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• 2002

There are total 403 prescriptions containing Radix Scutellariae in Donguibogam and among them, 106 prescriptions treat Radix Scutellariae as a principal medicine. This report describes the study on therapeutic range, symptom, pathology and composition of 106 Radix Scutellariae-main blended Prescriptions from Donguibogam. The frequency and percentage of Radix Scutellariae-main blended prescriptions for the therapeutic range are as follows; cold symptom-complex is the most frequent(11 prescriptions, 10.37%) and gynecology is second(10 prescriptions, 9.43%). The symptoms that Radix Scutellariae-main blended prescriptions are made out for are 70 prescriptions of 28 therapeutic ranges, for example, minor Eum physical appearance, fire of triple burners jaundice, etc. The main pathologies that Radix Scutellariae-main blended prescriptions are being affected by cold, fire triple burners, dampness and heat, wind and heat, heat of heart and lung, heat of liver, heat of spleen, etc. Through the research into the composition of Radix Scutellariae-main blended prescriptions, the kind of medicines and certain rules of compounding medicines centering on Radix Scutellariae are deduced as follows: The main combinations of herbal medicines are Radix Scutellariae and Fructus Gardeniae, Radix Scutellariae and Rhizona Rhei, and Radix Scutellariae, Rhizona coptidis and Fructus Gardeniae. The main combinations of prescriptions are Yihwanghwan(Radix Scutellariae, Rhizoma Cotidis, Radix Glycyrrhizae), Boanbaekchulsan(Radix Scutellariae. Rhizoma Atractylodis macrocephalae), Sambohwan(Radix Scutellariae, Rhizoma Cotidis, Cortex Phellodendrj), Samhwangwon(Radix Scutellariae, Rhizoma Cotidis, Rhizoma Rhei), Hwangryeonhaedoktang(Radix Scutellariae, Cortex Phellodendri, Rhizoma Cotidis. Fructus Gardeniae), Daegumhwahwan(Radix Scutellariae, Rhizoma Cotidis, Cortex Phellodendri. Rhizoma Rhei). Sanyeolumja(Radix Scutellariae. Rhizoma Cotidis. Radix Osterici koreani. Radix Ledebouriellae), etc.

• Journal of the Korean Society for Nondestructive Testing
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• v.16 no.1
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• pp.1-9
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• 1996

Many signal-processing techniques have been found to be useful in ultrasonic and nondestructive evaluation. Among the most popular techniques are signal averaging, spatial compounding, matched filters and homomorphic processing. One of the significant new process is split-spectrum processing(SSP), which can be equally useful in signal-to-noise ratio(SNR) improvement and grain characterization in several specimens. The purpose of this paper is to explore the utility of SSP in ultrasonic NDE. A wide variety of engineering problems are reviewed, and suggestions for implementation of the technique are provided. SSP uses the frequency-dependent response of the interfering coherent noise produced by unresolvable scatters in the resolution range cell of a transducer. It is implemented by splitting the frequency spectrum of the received signal by using gaussian bandpass filter. The theoretical basis for the potential of SSP for grain characterization in SUS 304 material is discussed, and some experimental evidence for the feasibility of the approach is presented. Results of SNR enhancement in signals obtained from real four samples of SUS 304. The influence of various processing parameters on the performance of the processing technique is also discussed. The minimization algorithm, which provides an excellent SNR enhancement when used either in conjunction with other SSP algorithms like polarity-check or by itself, is also presented.

• The Journal of the Korea Contents Association
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• v.20 no.10
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• pp.157-166
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• 2020

This study is a descriptive analysis of Korean business names listed on KOSDAQ (Korea Securities Dealers Automated Quotation) from a morphological perspective. A total of 1,358 business names on KOSDAQ are collected and analyzed in terms of origins and morphological structure. The analysis exhibits the monopoly of English: only 20% of the names are composed of only Korean elements, including Sino-Chinese, while 76% of them contain some form of English elements. It is pointed out that those English elements are not borrowed from English but are created in Korea and participate further word formation processes. In terms of word formation methods, compounding and shortening are most common, taking up 90% of all names. Multiple derived forms are used from an identical origin word, and even bound forms in English are taken and used as independent words, regardless of their original status in English. It is argued that Korean English is not entirely negative and should be considered as part of World Englishes.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.9 no.5
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• pp.1125-1129
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• 2008

Polypropylene (PP)/corn starch master batch(starch-MB) blends with different PP compositions of 90, 80, 70, and 60 wt% were prepared by melt compounding at $200^{\circ}C$, using lab scale Brabender mixer. The chemical structures, thermal properties and non-isothermal crystallization behavior of the PP/starch-MB blends were investigated by FT-infrared spectrometry (FT-IR), differential scanning calorimetry (DSC), and thermogravimetric analyzer (TGA). The fabrication of the PP/starch-MB blend was confirmed by the existence of hydroxy group in FT-IR spectrum. There was no district change in melting temperature and melting enthalpy, and TGA curve indicates a decrease in degradation temperature with starch-MB content. The non-isothermal crystallization process was analyzed using by Avrami equation. The Avrami exponents were in the range of 2.71-3.97 for PP and 1.48-1.99 for PP/starch-MB blonds. The activation energies calculated by Kissinger method were 233 kJ/mol for PP, 484 kJ/mol for PP90, 541 kJ/mol for PP80, 553 kJ/mol for PP70, and 422 kJ/mol for PP60.

• The KIPS Transactions:PartD
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• v.11D no.5
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• pp.1073-1086
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• 2004

Wireless internet is embossed the new keyword of IT technology in the world lately. The wireless internet is the architecture, technology and service to be can taken data communication and internet service using wireless device through connecting internet in the wireless environment. These wireless internet technology is extends the scope of using information with the existing wire internet technology. But, It is necessary to be extend supply of quantitative and qualitative for using wireless internet technology efficiently. For these matters, it is efficient to reuse good qualify contents that is serviced on wire environments. Then, in this paper, design and implement the technique of creating con-tents that is made by the method of compounding parts based on the contents automatic reuse technology over the concept of creating new wireless contents.

• Elastomers and Composites
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• v.46 no.2
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• pp.102-111
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• 2011

The innerliner for a tire has excellent impermeability, air retention and good flex properties. The innerliner offers a role to improve performance parameter, such as air retention and tire durability that is of praricular importance for commercial tires. In order to improve the gas barrier properties of a innerliner, most of the innerliner rubbers, such as a halogenated butyl rubber(HIIR), brominated poly(isobutylene-co-isoprene)(BIIR), brominated polyisobutylene-co-paramethylstyrene(BIMS) are used as nanocomposites with nano fillers such as silicates, graphite etc. Innerliners based on nanocomposites may allow gauge adjustments and permeability reductions with potential improvement in tire durability. This article discusses potential innerliner permeablity reduction and compounding parameters on the properties of nanocomposite based innerliners.

• Polymer(Korea)
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• v.30 no.3
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• pp.224-229
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• 2006

Quaternary ammonium salt terminated silane was prepared from aminopropyldimethylethoxysilane with methyliodide and ionized 7,7,8,8-tetracyanoquinodimethane $(Li^+TCNQ^-)$ was prepared from TCNQ with methyliodide and lithium iodide. Quaternary ammonium salt silane-TCNQ adduct (ST) was prepared by reacting quaternary ammonium salt terminated silane with $Li^+TCNQ^-$ solution. Poly (dimethylsiloxane)-ST adduct (PST) was prepared by condensation of $\alpha,\omega-hydroxyl$ group terminated poly (dimethylsiloxane) (PDMS) with ST. Maleated polyethylene modified with PDMS (PST-g-MPE) was prepared by melt polymerization of maleated PE and PST in internal mixer and PST-g-MPE/carbon black (CB) and MPE/CB composites were prepared by compounding PST with MPE and PST-g-MPE, respectively. The thermal and mechanical properties of the composites were measured and dispersion characteristics of CB in matrix rosins show that the dispersion of CB in PST-g-MPE/CB was better than that of MPE/CB composite.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.34 no.12B
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• pp.1407-1417
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• 2009

We propose a e-document management system that can provide segmented page information on a document according to different levels of authority from access control environment. The proposed system creates hierarchy identifier using a one-way hash chain and therefore does not need to own key information for all users as in existing system. Also by creating group keys by compounding hash chain hierarchy identifier with randomly formed group identifier, the system can flexibly respond to dynamic changes from group member movements while at the same time resolving the problems of key formation and management in document encoding technique using symmetric key for each page. Lastly as a result of comparative analysis through an experiment with existing e-document management systems, the proposed system showed superiority in the efficiency of encoding and decoding document and the speed of encoding and decoding by the pages.

• Asia-Pacific Journal of Business Venturing and Entrepreneurship
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• v.7 no.2
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• pp.141-150
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• 2012

This paper aims at proposing the establishment of concept for qualified startup business and the model of smart incubating business system for qualified startup business creation, which is being government's recent policy paradigm. The result of this paper shows the theoretical setting for the concept of qualified startup business through researching papers precedent and analyzing the startup business education affairs of American universities and proposing the model of requisition for qualified startup business. The core model of requisition for qualified startup business is to secure the essential factors for qualified startup business and the preparation process through compounding the requisites, the execution ecosystem for leading the mixing requisites and supporting. This model has been practiced enormously at business creation education field in American universities. This paper especially propose TEC program of NC State University in U.S.A. by case study.