• KIISE Transactions on Computing Practices
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• v.22 no.8
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• pp.399-404
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• 2016

asm.js is a newly proposed language for overcoming the low performance of traditional Javscript language. asm.js is known as the subset of Javascript, and usually performs within only doubled slowdown over native compilation with clang. When programmers develop asm.js applications, they usually implement them via source-to-source compilation from C/C++. However, this application development process does not consider the cases where programmers need to develop asm.js applications from existing Javascript applications. To surmount the limitations in current development environment, we propose Javscript-to-asm.js compiler, which enables programmers to develop asm.js applications by using Javscript. By analyzing the result of our study, we demonstrate the efficiency and availability of the proposed compiler.

• Journal of Korean Society of Water and Wastewater
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• v.22 no.1
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• pp.3-14
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• 2008

ASM No. 2(Activated sludge model No. 2) is very useful model to analyze the wastewater treatment which removes nitrogen and phosphorus. But, it is difficult to apply ASM No. 2 to control of wastewater treatment since it has 17 material divisions and 46 parameters. So the purpose of this study was the simplification of ASM No. 2 and the provement of simplification model. Firstly ASM No. 2 was simplified with 5 material division and three phases(Anaerobic, aerobic, anoxic phases). The simplified model was proved by R-square using track study data. As a result of provement, the values of R-square in ${NH_4}^+$ were 0.9815 in ASM No. 2 and 0.9250 in simplified model and in ${NO_3}^-$ were 0.8679 in ASM No. 2 and 0.7914 in simplified model and in ${PO_4}^{3-}$ are 0.9745 in ASM No. 2 and 0.9187 in the simplified model when the ability to express the material variation was compared by R-square. So, the simplified model has enough ability to express the variation of ${NH_4}^+$, ${NO_3}^-$ and ${PO_4}^{3-}$.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2015.10a
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• pp.43-44
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• 2015

AIS-ASM is a one of the study to provide a variety of maritime safety information as well as ship's position and navigational information that is their own function since 2004. This study aims to reduce the marine officer's workload through automating marine officer's mandatory reporting items using the one of the next maritime digital communication technology (ASM2.0). For this purpose, we designed and experimented of the ASM2.0 protocol through analyzing a domestic regulation about passenger flight and AIS-ASM message.

• Journal of Digital Contents Society
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• v.16 no.6
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• pp.871-882
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• 2015

AIS-ASM is one of the studies to provide a variety of maritime safety information as well as the information on a ship's position that is their own function, and AIS-ASM has been implemented with adjustment of the relevant regulations since 2004. However, it was reported that the increased use of ASM message on the existing AIS channel affects the part of the existing AIS own function such as the transmission of the ship's position and safe-related information. Also, seamless MSP service is difficult to provide at a low transmission rate of the existing AIS channel. This study aims to reduce the marine officer's workload through automating captain's mandatory reporting items using the one of the next maritime digital communication technology (ASM2.0). For this purpose, we designed and realized the ASM2.0 protocol through analyzing domestic regulations about passenger flight and AIS-ASM message.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.17 no.7
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• pp.1515-1521
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• 2013

AIS is a core service in the maritime safety domain. AIS Message type #6 and #8(for binary date) can be used for carrying any kind of MSI(Maritime Safety Information). The MSC(Maritime Safety Committee) approved SN/Circ. 289 on Guidance on the use of AIS Application-Specific Messages in 2010. The MSI that carried by AIS-ASM can support to reduce the maritime accidents. Since a new AIS-ASM service places an additional load on the VDL(VHF Data Link), there should be a deployment process for new AIS-ASM services. In this paper we analyze the AIS-ASM services and survey the extended functions and systems for each AIS-ASM service. We also present the survey of the statistical analysis of local AIS messages. and suggest preliminary research topics for the deployment of new AIS-ASM services. VDL monitoring system, system for detection and removal of malfunctioning AIS equipments, and value analysis process of the MSI services are required.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2021.11a
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• pp.31-33
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• 2021

현재 진행 중인 '스마트 항로표지 현장시설 고도화 연구'는 '확장이 용이한 다목적 플랫폼 설계', '스마트 항로표지용 최적 통신장치 개발' 등이 포함되어 있다. 이 중 AIS-ASM은 AIS를 기반으로 특정 응용에 특화된 메시지를 보낼 수 있는 수단이며, ASM에 대한 활용 가능성이 증대됨에 따라, ITU-R M.2092-0에서는 두 개의 AIS 채널과는 별도로, 두 개의 ASM 채널을 새로 할당하였다. IALA-AISM에서는 각국의 ASM 메시지를 수집하여 제공하고 있는데, 본 논문에서는 이들을 분석하여 현재 운용하고 있는 항로표지 관련 메시지를 살펴보고, 향후 스마트 항로표지에서 활용 가능할 것으로 기대되는 메시지들을 정리한다.

• Journal of Industrial Technology
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• v.20 no.A
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• pp.73-82
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• 2000

This study was implemented to find an optimal model for wastewater treatment processes using PHOENICS(Parabolic, hyperbolic or Elliptic Numerical Integration Code Series) and ASM(Activated Sludge Model). PHOENICS is a general software based upon the laws of physics and chemistry which govern the motion of fluids, the stresses and strains in solids, heat flow, diffusion, and chemical reaction. The wastewater flow and removal efficiency of particle in two phase system of a grit chamber in wastewater treatment plant were analyzed to inquire the predictive aspect of the operational model. ASM was developed for a biokinetic model based upon material balance in complex activated sludge systems, which can demonstrate dynamic and spatial behavior of biological treatment system. This model was applied to aeration tank and settling chamber in Choonchun city, and the modeling result shows dynamic transport in aeration tank. PHOENCS and ASM could be contributed for the optimal operation of wastewater treatment plant.

• BMB Reports
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• v.52 no.2
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• pp.111-112
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• 2019

Although many studies have reported that the breakdown of the blood-brain barrier (BBB) represents one of the major pathological changes in aging, the mechanism underlying this process remains relatively unexplored. In this study, we described that acid sphingomyelinase (ASM) derived from endothelial cells plays a critical role in BBB disruption in aging. ASM levels were elevated in the brain endothelium and plasma of aged humans and mice, resulting in BBB leakage through an increase in caveolae-mediated transcytosis. Moreover, ASM caused damage to the caveolae-cytoskeleton via protein phosphatase 1-mediated ezrin/radixin/moesin dephosphorylation in primary mouse brain endothelial cells. Mice overexpressing brain endothelial cell-specific ASM exhibited acceleration of BBB impairment and neuronal dysfunction. However, genetic inhibition and endothelial specific knock-down of ASM in mice improved BBB disruption and neurocognitive impairment during aging. Results of this study revealed a novel role of ASM in the regulation of BBB integrity and neuronal function in aging, thus highlighting the potential of ASM as a new therapeutic target for anti-aging.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2014.10a
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• pp.176-178
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• 2014

해상 교통 관제 시스템을 구축하기 위한 센서 장치 중, 자동식별장치(AIS, Automatic Identification System)는 핵심적인 역할을 수행하는 센서 장치다. AIS가 제공하는 메시지 중 국제해사기구(IMO, International Maritime Organization) Circ.289 권고안의 6번 및 8번 메시지를 통한 ASM (Application Specific Message)은 선박위치송출이라는 AIS 고유 목적을 넘어 AIS 활용 범위를 확대시킨 좋은 예이다. 이에 본 논문에서는 AIS-ASM 서비스를 분석하여 해상 안전 분야에 적용할 수 있는 방안을 제시하고, 더 나아가 일부 AIS-ASM 서비스의 개선 방안을 소개하고자 한다.

• Journal of the Korean Society of Food Science and Nutrition
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• v.43 no.6
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• pp.822-828
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• 2014

Allium sacculiferum Max. (ASM) is a perennial plant of the Liliaceae family and grows over the entire regions of Korea. Obesity is a serious health problem worldwide and has currently become a prevalent chronic disease. Adipocytes produced by preadipocyte differentiation during adipogenesis and adipocytes combined with abnormal accumulation cause obesity. Recently, intracellular reactive oxygen species (ROS) were shown to accelerate lipid accumulation in 3T3-L1 cells. In this study, we investigated the effects of ASM methanol extracts on ROS production and lipid accumulation in 3T3-L1 adipocytes. Our results indicate that the 1,1-diphenyl-2-picrylhydrazyl radical scavenging activity of ASM methanol extracts increased in a dose-dependent manner. ASM methanol extracts suppressed ROS production and lipid accumulation during adipogenesis. In addition, ASM methanol extracts inhibited the mRNA expression of both pro-oxidant enzymes such as glucose-6-phosphate dehydrogenase as well as the transcription factors, including sterol regulatory element-binding proteins 1c, peroxisome proliferator-activated receptor ${\gamma}$, and CCAAT/enhancer-binding protein ${\alpha}$. Our results suggest that ASM methanol extracts inhibit ROS production and lipid accumulation by controlling ROS regulatory genes and adipogenic transcription factors. Thus, ASM has potent natural antioxidant, anti-adipogenic properties and have potential in the development of a potent anti-obesity agent.