• Ecology and Resilient Infrastructure
• /
• v.4 no.3
• /
• pp.123-129
• /
• 2017

This study aims to identify and reduce the gaps of understandings and thoughts of river restoration between river engineers and ecologists by logically re-examining the definition and value of river restoration. For this purpose, function, and goods and services of river ecosystem are analyzed based on the study of those by de Groot et al. (2002). From the result of this analysis, definitions and strategies of presently-known river restoration and its similar activities are re-examined. Next, presently-known river restoration models, ERM (Ecological restoration model), ARM (Amenity restoration model) and semi-ERM (semi-Ecological restoration model), are reinforced in their frameworks. This study is expected to narrow the gap, between the professionals of different fields, of their understandings and thoughts of river restoration.

• Journal of KIISE:Information Networking
• /
• v.31 no.3
• /
• pp.280-288
• /
• 2004

In Ad Hoc Networks, a connection breaks due to the irregular movement of mobile nodes and the inherent characteristics of the wireless medium such as the interference and the multi-path fading. AODV, a typical on-demand routing protocol in Ad Hoc networks, uses the local repair mechanism to cope with the connection breaks. This paper proposes an efficient route maintenance scheme for AODV, named as AODV-ERM, by utilizing hello messages. The proposed AODV-ERM scheme can recover some link breaks efficiently without relying on the expensive local repair process, thereby reducing the repair time. To show the effectiveness of the proposed scheme, we performed extensive simulation with NS2. The simulation results show that the proposed scheme can reduce the repair time effectively and thus, increase the overall packet delivery ratio.

• The Korean Journal of Physiology and Pharmacology
• /
• v.24 no.1
• /
• pp.121-126
• /
• 2020

The ezrin-radixin-moesin (ERM) proteins are a family of membrane-associated proteins known to play roles in cell-shape determination as well as in signaling pathways. We have previously shown that amphetamine decreases phosphorylation levels of these proteins in the nucleus accumbens (NAcc), an important neuronal substrate mediating rewarding effects of drugs of abuse. In the present study, we further examined what molecular pathways may be involved in this process. By direct microinjection of LY294002, a PI3 kinase inhibitor, or of S9 peptide, a proposed GSK3β activator, into the NAcc core, we found that phosphorylation levels of ERM as well as of GSK3β in this site are simultaneously decreased. These results indicate that ERM proteins are under the regulation of Akt-GSK3β signaling pathway in the NAcc core. The present findings have a significant implication to a novel signal pathway possibly leading to structural plasticity in relation with drug addiction.

• Korean Journal of Microbiology
• /
• v.28 no.1
• /
• pp.27-34
• /
• 1990

Two macrolide-lincosamide-streptogramin B (MLS) antibiotic resistance genes, one expressed inducibly and the other expressed constitutively were recognized from a single Staphylococcus aureus DH1 strain. The inducible MLS resistance gene was isolated and cloned from the R-plasmid pDE1(7.4kb) and the constitutive gene was from chromosomal DNA. Base sequence of the inducible MLS resistance gene (1.2kb) was determined and found as same that of pE194. The restriction map of the cloned constitutive MLS resistance gene was compared with that of the inducible gene. Two genes have same restriction map except leader region. In the constitutive gene there is no leader region which is doing major role in inducible expression.

• Journal of Applied Biological Chemistry
• /
• v.56 no.3
• /
• pp.165-170
• /
• 2013

The SCO3388 gene from Streptomyces coelicolor is homologous to tmrB, the tunicamycin resistance gene of Bacillus subtilis. The SCO3388-inactivation strain (SY-tbl-1) was generated by replacing SCO3388 with thiostrepton resistance gene. Spores of S. coelicolor derivatives were prepared on mannitol-soy flour (MS) agar on which SY-tbl-1 displayed no significant defect in growth and development. When plated on R4 agar, spores of SYtbl-1 displayed retardation in growth and sporulation, whereas its mycelium gave rise to normal growth. Thus, SCO3388 is suggested to be involved in the dormant spore germination. Expression of SCO3388 under the ermE1 promoter restored but only partially the ability to sporulate in SY-tbl-1. Neither SY-tbl-1 nor SY-tbl-1/ermE1p-SCO3388 showed a difference in tunicamycin resistance to the wild type whereas, interestingly, the introduction of ermE1p-SCO3388 dramatically enhanced spore survival to heat and detergent treatments, suggesting that SCO3388 might play a role in the maintenance of spore cell wall integrity.

• Magazine of the Korean Society of Agricultural Engineers
• /
• v.31 no.1
• /
• pp.106-116
• /
• 1989

This study aims at scrutinizing the long4errn consolidation characteristics of peats sampled at three different regions of Chonbuk province. The standard consolidation test and the single load consolidation test were performed about these samples and especially in case of the latter the loading period was 350 days. The main condusions analyzed are as follows. 1. Void ratio showed much greater values than that of the general clay and was decresed greatly according to the increase of the load. 2. In case of the relationship between the sefflement and the long-term settlement time the rate of settlement increment became great according to the increase of the load step and the long4erm settlement became linely proportional to the logarithm of time alter 10 minutes. 3. The linear correlation was showed between the long4erm settlement time and the void ratio and therefore equations by regression analysis were derived in order to estimate the long-term settlement The slope of straight lines increased according th the increase of the load step and secondary consolidation coefficients ranged from 0.04-0.27. 4. The secondary consolidation coeffcient became linealy proportional to the compression index and the ratio of Ca to CC was 0.072. 5. The period required in ending the primary consolidation was about 10 minutes and alter that the secondary consolidation coefficient appeared to have constant value. Therefore the secondary consolidation coefficient was judged to be used as a significant factor in estimating the long4erm settlement. 6. In case of the single load consolidation test the secondary consolidation coefficient showed the tendancy increasing according to the increase of the consolidation pressure.

• 한국IT서비스학회:학술대회논문집
• /
• 2005.05a
• /
• pp.591-599
• /
• 2005

현재의 경영환경은 기업경영에 긍정적 또는 부정적인 영향을 미칠 Event가 다양하고 예측이 어려워지고 있는 상황에 직면하고 있다. 반면에 각종 경영상의 규정과 규제는 주주와 시장의 입장에서 기업의 경영의 투명성과 신뢰성을 요구하고 있다. 대표적으로 금융산업은 Basel II, 미국증시에 상장된 기업은 SOA라 불라는 Sarbanes-Oxley법안, 국내기업은 집단소송제, 외감법, 증권거래법 등에 기업의 경영 성과와 재무제표에 대한 경영진의 서명 및 외부감사인의 검토를 규정하고 있다. 경영진은 전략적인 목적 달성에 영향을 미치는 내외부에서 발생하는 상황과 규정/규제에 대한 대응현황을 종합적으로 판단해야만 하게 되었다. 이러한 상황에서 2004년 9윌 Committee of Sponsoring Organization of the Treadway Commission(이하 COSO)에서는 Enterprise Risk Management Framework을 발표하였다. 이는 기존 내부통제(Internal Control) 개념을 확장/보완한 개념으로 전사적 관점에서 기업에 영향을 미치는 Event를 식별하고 통제하는 일련의 과정을 정의 하고 있다. 대부분 기업에서는 법규와 규정중심의 대응을 추진하고 있는 현황이며, 추진 과정시 리스크에 대한 개념이나 관리 수준에 대한 혼란을 격고 있다. 리스크 정의시 일관된 관점을 유지할 수 있는 관리 범주와 관리 목적의 부재를 제기하고 있며, 일회적인 관리가 아닌 정례화된 프로세스로 운영하도록 하는 관리체계 정립을 위한 방법론이나 실행가이드를 필요로 하고 있다. 이에 새로운 관리체계로서 Enterprise Risk Management(이하 ERM) 도입을 위하여 ERM에 대한 명확한 이해와 적용시 주요이슈에 대한 실천적 해결안을 제시하는 것을 본 연구의 목적으로 삼고자 한다

• Journal of the Korea Safety Management & Science
• /
• v.17 no.2
• /
• pp.1-11
• /
• 2015

Enterprise Risk Management(ERM) is aiming at the establishment of the risk management process to prevent and cope with risks in advance and is composed of Risk Identification, Risk Assessment, Risk Response and Monitoring. It is feedback through the Risk Re-identification. This study has analysed a sample of the risk management system of an airport operating corporation, for this purpose, relevant documents and examples of overseas airports have been reviewed. It has found that corporations establishing ERM have been performing identical procedures such as the process of Identification, Assessment, Effective Reporting, Communication and monitoring and so on. The A corporation has established the process for risk management and crisis management and organized for its organization and system. The risk management has the same process such as above. In this process, when the symptoms of critical crisis have been recognized, it has been transformed into crisis management system, through which, corporate-wide response has been conducted in the process of crisis status analysis, response and follow-up management. This study expects to contribute to systematic foundation for future business continuity on the basis of risks and response procedures acknowledged by this study.

• KIPS Transactions on Computer and Communication Systems
• /
• v.1 no.2
• /
• pp.103-108
• /
• 2012

Recently, IT Governance has been applied to business management environment. In this paper, we study business model that can minimize information security risk using IT governance in cloud computing environment. Especially, we propose the interaction model that link risk management for subject of information security governance. In our model, synergy means the effective, strategic and secure business support. And interaction analysis of BMIS's 4 elements and 6 dynamic interconnections is required. Therefore we propose interaction model which can link risk management based on COSO ERM or COBIT Risk IT Framework.

• Journal of applied mathematics & informatics
• /
• v.30 no.1_2
• /
• pp.135-145
• /
• 2012

Traditionally, ERM (Equivalent Random Method) is used to determine number of circuits in an overflow circuit group with rough traffic which has vmr(variance to mean ratio) greater than one. Recently, IPP(Interrupted Poisson Process) approximate method which represents the collective feature of the overflow has been introduced. The negative binomial loss formula can be applied to determine the required number of circuits in the overflow circuit group. In this paper, we deal with the negative binomial loss formula and determination method of number of circuits. We also analyze and compare these three loss formulas.