• Applied Chemistry for Engineering
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• v.5 no.3
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• pp.451-456
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• 1994

Alkyl polyglucosides (APG), so called natural nonionic surfactants, are prepared with glucose from corn starch and fatty alcohol from palm and/or coconut oil. When we studied on interfacial properties of APG, surface and interfacial tension, cmc, foaming and effectiveness, according to degree of polymerization of glucose unit (D.P.=1.2~1.8) and alkyl chain length, the former hardly affects but the latter greatly affects on them. The order of detergency for fatty acid soils decreased as followings ; APG 0814> APG 1214> APG 10> APG 0810> APG 08, and the samples with lowest interfacial tension and maximum adsorption had a better detergency.

• Proceedings of the KSR Conference
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• 2006.11b
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• pp.1222-1227
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• 2006

These days customers require various things such as multiple train, variable trainset, multiple Auxiliary Power Generator(APG) and so on. Among these, the train with multiple APG is installed with APG in each car. Thus, we control and monitor train installed with multiple APG through the TCMS(Train Control & Monitoring System). The TCMS supervise APG failure status and transmit control data in case of a APG failure or more, so energize or de-energize ESK and LRR. Therefore, we can easily control ESK and LRR which gets hard to control because of multiple APG.

• Journal of Soil and Groundwater Environment
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• v.8 no.1
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• pp.1-8
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• 2003

Three different surfactants, APG, Brij30, and SDS, were tested to study the characteristics of sorption on soil surfaces, washing ability, biodegradability, and electrokinetic removal. Kaolinite and phenanthrene were selected as a model soil and a representative HOC, respectively. Phenanthrene was sorbed on kaolinite up to 2,200 mg/kg dry soil. The APG, Brij30, and SDS were sorbed on soil to 40, 7, and 4g/kg soil, respectively. The washing ability of phenanthrene was in order of Brij30＆gt;SDS＆gt;APG. The biodegradability tested with sludge was in order of APG＆gt;Brij30＆gt;SDS. In the electrokinetic test, the highest removal efficiency was obtained with APG that exhibited the highest electroosmotic flow. To increase the removal efficiency of HOC in the electrokinetic remediation, the most important factor was the selection of surfactant which maximized the electroosmotic flow.

• 한국연소학회:학술대회논문집
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• 2002.06a
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• pp.247-251
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• 2002

• Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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• 2006.06a
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• pp.240-241
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• 2006

변류기의 제조공법에는 conventional 방식이 있다. Conventional 방식은 부분적으로 불규칙한 경화에 의한 굴곡형태, 단기간에 금형의 손상이 많이 가고, 제한된 생산량으로 금형이 많아야하고 또한 금형의 예열이 필요한 단점을 가지고 있다. 이를 개선한 APG(Automatic Pressure Gelation) 주형방식은 제품의 외관을 매끄럽게 하고, 자동화에 따른 금형수명을 연장하고, 1일 생산량이 conventional 방식보다 8배나 많고 제품의 후경화 설비만 필요한 장점이 있다. 생산성 향상 및 제조원가 절감을 위하여 새로운 제조공법인 APG 방식의 제조공법에 맞는 원재료 및 작업조건을 표준화하고 한국전기연구원이 보유하고 있는 고가장비인 내후성시험기, 성분분석시험기, 충격시험기, 단락시험설비 등을 이용하여 시제품에 대한 평가 시험을 하여 제품의 품질을 향상하고 안정성을 확보함으로써 국내 기업의 기술 경쟁력을 향상하고자 하였다.

• Korean Journal of Plant Taxonomy
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• v.45 no.3
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• pp.278-297
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• 2015

With the development of the internet and international agreements such as the Convention on Biological Diversity (CBD) and the Convention on International Trade in Endangered Species (CITES), Korean researchers frequently encounter scientific names of foreign species, and these are named on a case-by-case basis in Korean without any standard naming method. Therefore, standard Korean names for entire orders and families in the world are required for better communications in Korea. However, there have been no comprehensive discussions of the standardization of Korean names for the orders and families found in the world. In this study, we 1) compare the Korean names of orders and families in the references, 2) discuss naming methods in Korean for foreign taxa, and 3) then suggest standard Korean names for the orders and families in the APG III, which is an up-to-date angiosperm classification system. This study will be a starting point for the national standardization of Korean names for orders and families found throughout the world.

• Journal of applied mathematics & informatics
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• v.30 no.3_4
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• pp.365-380
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• 2012

Non-negative matrix factorization (NMF) is a very efficient method to explain the relationship between functions for finding basis information of multivariate nonnegative data. The multiplicative update (MU) algorithm is a popular approach to solve the NMF problem, but it fails to approach a stationary point and has inner iteration and zero divisor. So the elementwisely alternating projected gradient (eAPG) algorithm was proposed to overcome the defects. In this paper, we use the fact that the equilibrium point is stable to prove the convergence of the eAPG algorithm. By using a classic model, the equilibrium point is obtained and the invariant sets are constructed to guarantee the integrity of the stability. Finally, the convergence conditions of the eAPG algorithm are obtained, which can accelerate the convergence. In addition, the conditions, which satisfy that the non-zero equilibrium point exists and is stable, can cause that the algorithm converges to different values. Both of them are confirmed in the experiments. And we give the mathematical proof that the eAPG algorithm can reach the appointed precision at the least iterations compared to the MU algorithm. Thus, we theoretically illustrate the advantages of the eAPG algorithm.

• Smart Media Journal
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• v.5 no.1
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• pp.88-94
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• 2016

In this paper, we proposed a new object tracking algorithm based on sparse representation to handle the drifting problem. In APG-L1(accelerated proximal gradient) tracking, the sparse representation is applied to model the appearance of object using linear combination of target templates and trivial templates with proper coefficients. Also, the particle filter based on affine transformation matrix is applied to find the location of object and APG method is used to minimize the l1-norm of sparse representation. In this paper, we make use of the trivial template coefficients actively to block the drifting problem. We experiment the various videos with diverse challenges and the result shows better performance than others.

• Proceedings of the Korean Society of Soil and Groundwater Environment Conference
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• 2000.05a
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• pp.121-124
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• 2000

In-situ soil remediation using electrokinetics has been investigated and the attempts for the removal of hydrocarbons have been continued. In this study, the electrokinetic remediation using three different kinds of surfactnats was conducted for the removal of phenanthrene from clay The used surfactnats were APG, Brij30 and SDS. In the solubility test for phenanthrene, the experimental result was APG

• Korean Journal of Plant Taxonomy
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• v.38 no.3
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• pp.197-222
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• 2008

A recently published Korean Flora, "The genera of vascular plants of Korea (GFK)", includes the descriptions and keys for 217 families, 1,044 genera, and 3,209 species of Korean vascular plants. We reclassified these taxa according to the recent APG classification system, which resulted in 64 orders, 204 families, 1,044 genera and 3,209 species. Twenty-two families from the GFK were abandoned because of changes to the familial delimitations in the APG system. In contrast, the number of families in the Liliaceous group was increased. The Liliaceae in the GFK included 31 genera and 109 species. These taxa are now assigned to 10 families in four different orders including Liliales, Asparagales, Alismatales, and Dioscoreales because of the drastic changes to the monocot classification system in the past 20 years. In addition, the family name of the Aucubaceae was changed to Garryaceae. As a result, the number of families in the GFK has been reduced to 204. The results were summarized in four tables and two figures at the levels of unofficial higher taxonomic hierarchies, orders, families and genera. This new information can provide a guidelines for selecting the phylogenetic analysis unit for the Korean tree of life (KTOL) project. Futhermore, the updated classification system also provides an important summarization for the systematic community for placing the Korean flora in a modern phylogenetic context.